METHOD TO FORM GROOVE STRUCTURE ON INTERNAL SURFACE OF PIN BORE OF PISTON
The present invention refers to according to Claim 1 along the inner surface of the piston pin bore grooves before calling number (pin bore) method for forming a structure are disclosed. In addition, the present invention refers to a piston for an internal combustion engine which has a groove structure along said piston pin bore said method. Piston are generally, at least one pin bore and, for example, the connecting rod pin for actuating said pin within the bore is rotatably mounted thereto. For supporting a high load generated during operation of the pin formation as much as possible and preferably smooth surface of the bore. As a result pin bore even better load bearing have the ability, said flat surfaces has a piston and pin required lubricating oil for lubricating the power transmission between pin bore support (support) responded negatively to effect substrate. For a better lubrication of the, surface of the bore hole and said pin grooves is use as sealed with the number of ice lubricant grooves improve substrate. Said surface when said flat surface portion is designed in the form of grooves number ball reduced the surface of load bearing properties reduced. In addition, the grooves of an improper lubricant store. In order to solve said a door number, the call and document number US 6,089,756 A call number DE 10 2006 050 246 A 1 nucleotide, relatively less deep groove deep groove depth and groove structure is said pin having a target surface of the bore hole number number looked into. Both in the form of grooves for storing lubricant and furthermore, relatively shallow grooves with a greater surface load-bearing capability formed on the substrate. Said piston at, the grooves are arranged in parallel or parallel groove structure formed. The depth of each groove varies along the groove can be related in addition. Call number DE 44 42 218 A 1 nucleotide database is dome-shaped and fine-boring machine is publicly known to form a bore, said bore circumferentially along axial direction (elliptical (ovality)) and/or ([...] (trumpet)) can be changed through suitable action. Said boring tool rotatable fine boring machine, a boring bar with said bore into which said cutting tool advanced (boring bar) and synchronized to and a boring bar can be moved by means of a workpiece chuck (chuck). Said fine-boring machine is, for example a helical groove of the present invention appropriate behavior of said constant radial bending (deflection) of the cutting tool and the unit can be introduced into the inner surface of said bore in accordance with the conveying speed. The number point along said groove structure is prior art door having separate working in particular high production costs and production duration (durations) to induce a high manufacturing cost occurs. Thus, the purpose of the invention comprises a piston pin bore on the interior surface of said piston groove structure and method for forming improved in the embodiment or at least selective in the embodiment in particular [...] number to a relatively simple production and/or characterized by a reduction of production costs and/or reduction of production time (production duration). According to the present invention, is solved by the number of said main independent claim are disclosed. Advantageous in the embodiment are dependent anti of main number are disclosed. The present invention refers to, an exact cutting tool having a boring bar (boring bar) of a piston pin bore (pin bore) boring tool comprising a groove structure on the interior surface of a polymer based on a general idea, said pin bore into which said cutting tool comprises a boring bar is said part is said number 1 number 1 on the inner surface with said groove depth width (b1) number 1 which comprises introducing said number 1 number 2 when a boring bar is now outside another return depth different from a depth of a groove structure having said inner surface grooves are introduced into number 2. The, said one groove structure having different depth grooves the same tool, namely a single cutting tool can be formed by a boring bar attached to said. In addition, said pin bore into which said boring bar and said boring bar grooves is introduced into forward motion when the inner surface of said pin bore is out when moving a simple and short time pin bore on the interior surface of said groove structure introduced therein. According to the present invention, boring bar number said rotatable ball sliding along the groove structure is formed. The boring bar is rotated in rotation direction (n1) rotational speed number 1 number 1 (v1) has said pin bore into which moves to a forward speed or velocity. Selectively, said relative motion and other relative movement, is mounted at the location number boring bars are fixed on the workpiece chuck (chuck) performed by a piston in corresponding switching (shifting) disapproval. At least one of spiral grooves having a smaller width depth number 1 number 1 number 1 are introduced into said inner surface. The continue to the present invention, number 2 and number 2 speed or velocity (v2) said boring bar (n2) rotational speed while maintaining said pin bore whose rotating direction, said boring bar when said number 1 number 2 returns to the depth different from a depth, number 2 (b2) depth of said at least one spiral groove structure with number 2 are introduced into the inner surface grooves. In particular said boring bar and thus does not require an off direction of rotation stop operation of a groove structure of production job is connected to the shortened substrate. The, said at least one groove and said at least one number 2 number 1 of spiral groove is vice versa and further comprises a spiral direction (opposing helix directions). Said radially inner surface grooves by adjusting said cutting tools is introduced on the interior surface of said pin bore therein. Wherein, said boring bar, a groove structure in body inside said groove in a radial direction for introducing an exact cutting tool can take into account that the non-volatile. In addition, said boring bar and a piston or said piston relative movement between the inner surface of the introducing grooves by considering can. In particular wherein rotation in synchronization with said rotation against the corresponding transverse cutting tool along a boring bar considering can move. Similarly, a boring bar transverse direction about a rotational axis of said boring bars can be. In particular depth and width of each groove, for adjustment of the rotational speed of the boring tool along the internal surfaces of the boring tool in adapting determined. Said adaptation includes in particular document number DE 44 42 218 A 1 call carried out as described. Said number 1 and number 2 grooves of different depth can be shaped differently. The same cutting tool is a boring bar for transferring motion and return movement when adjusted radially between the same cutting tool so that it can be formed by grooves, said inner surface of the boring bar has different pin bore depth cutting substrate. In this case, consists of a piston or workpiece chuck dispensed is multiplexed synchronization of movement in the radial direction of WIPO. Selectively, a boring bar when said piston returns to the machining position in each case along a radial direction toward said cutting tool (or cutting tool away from and) conversion (shifted) radial adjustment and rotation of the cutting tool is a boring bar in a direction transverse rotational movement of the synchronized through piston relatively deeper (or more shallow) number 2 can be grooves on an interior surface. In both cases, the width of the respective groove, as a function of converter according to the depth of the cutting tool geometry. Synthesized as described call number DE 44 42 218 A 1 non-cylindrical interior surface which defines a bore and up to the basic shape for synchronous movement when ball number workpiece, a boring bar based on radial adjustment or adjustment of the cutting tool can be avoided. In this case, said method-precipitation method, a boring bar is moved forward in said system is number 1 having injection molding bore groove structures produced by the action while suitable non-cylindrical interior surface, a groove structure number 1 number 2 grooves during a boring bar returns to the respect to the constant value deepen the cut substrate. When a boring bar returns to said non-cylindrical along the inner surface and exposed to new movement, forming female surface change of a groove depth may be allowed when they are introduced as relatively deeper number 2 groove cylindrical groove shape. In addition, said number 2 grooves, said cutting tool attached to a boring bar which is reflected from the number 2 to each other can be formed having a depth. Said grooves formed after a boring bar shifts and the number 1, said boring bars to boring bar returns to the inner surface of said radially extending pin bore when cutting grooves into which number 2, said number 1 after the pixels are formed in a radially cutting tool said number 1 whose grooves can be separated. Said number 1 and number 2 geometric shape of groove cutting tool utilizes a different plurality of PMOS can be completely separated. The forward and return during relative motion different depth pattern is connected to instrumentation for unacceptable configurations by a single cutting bombing, relatively wide and flat but relatively narrow number 2 number 1 groove and relatively deep grooves can be combined. In a preferred in the embodiment, the forward and return during relative motion remain the same (n1=n2) is the use of a boring bar as well as the rotation direction of the rotation speed are disclosed. Said number 1 and number 2 desired to form a helical groove pitch (pitches), in this case only the speed (v1, v2) should adapt. The gi=vi/ni relationship, in particular number 1 number 2 when rotational speed of the rotational speed does not match (n1 ≠ n2), pitch (g) optionally or additionally boring bar influenced by each rotation speed thereof can. On principle, said boring bar number 1 or number 2 (v1)/(v2) moves with speed and speed can be. The preferred in the embodiment, said moving direction of said pin bore has a boring bar is said number 2 (v2) whose speed being greater than said number 2 take-off speed number 1 (v1), has said pin bore into which said boring bar moves to a forward moving direction of said number 1. I.e., boring device has a rotational direction while maintaining said number 1 number 2 and at greater compared back to the substrate. The, rotational speeds (n1=n2) remained the same as the number 2 having grooves, at least one groove have a greater pitch than the number 1. The, said at least one number 2 having an interior surface portion of the groove, said groove having at least one number 1 internal surface portion may be less than disclosed. At least one said at least one number 1 number 1 number 2 number 2 groove depth greater than said groove depth is preferably substrate. I.e., said boring tool having at least one spiral groove structure returns to said grooves when said number 2, number 1 number 2 depth greater than depth surface having an introduced into the substrate. The groove structure is formed deeper than said at least one said groove number 1 number 2 has at least one groove. In addition lubricant said number 2 is stored in a relatively large number of groove areas, pin mounted within the bore portion said number 1 to number and a pin that is relatively loadings applied ball groove areas. In a preferred in the embodiment, at least 25% of the interior surface of lubricant reservoir that act as relatively deep grooves and maximum 50%, in particular preferably occupy about 40% when, in addition suitable for absorbing gas pressure load suitable for supplying lubricating oil is formed in soft high internal surface portions can be formed. Said grooves number 2 having width and pitch rate ratio is 0. 25 ≤ b2/g2 ≤ 0. 5 Or b2/g2 ≒ 0. 4. The preferred in the embodiment, at least one said at least one number 1 number 1 number 2 number 2 groove width is greater than said groove width. I.e., a boring bar when said upper portion, said groove structure larger than said inner surface to decrease the spiral grooves number 1 number 2 number 2 introduced into the substrate. However, the same relatively less deep cut cutting tool or another cutting tool by a relatively small number 2 number 1 compared to an improved form or a disapproval. Advantageous in the embodiment in, said number 2 grooves formed deeper groove number 1. I.e., initially when a boring bar is moved forward, pin bore tube having relatively flat number 1 while the entire inner surface of the groove structures, during a return motion continues the same pitch is preferably relatively greater and relatively deep number 2 groove have been introduced substrate. In this way, cutting tool cutting grooves when said cutting tool is flattened so that the number 1 of already-formed groove into relatively deep into the number 2 act on the cutting tools each load change due machining quality and give a negative effect on the pipe joint. The of the present invention method, principle with number 1 number 2 and essentially all depth can be introduced into the inner surface of the groove and a pin bore grooves. Preferably about 1 μm has introduced into the depth of grooves number 1 is provided which has an inner surface with each other. Said at least one number 2 number 2 grooves having depth 20 μm, in particular preferably in about 5 μm is preferred substrate. Essentially, to a desired depth and/or a width and/or pitch or pitch with grooves that is introduced into the interior surface, said boring bar is rotated remaining movement of rotational speeds are adaptive parameters. Wherein, said speed of rotation of the boring bar in particular can be changed from the forward and return assembly is provided. I.e., each number 1 and number 2 (n2) rotational speed (n1) rotational speed change or can change relative to each other. Piston pin bore inner surface having grooves for forming method of the present invention said method in addition to the structure of the present invention produced by the inner surface of the piston pin bore to form said range also rotate in opposite rotary directions with two helical grooves having different depth has. Using said piston in an internal combustion engine are disclosed. The connecting rod pin bore piston is in particular relevant pin therefor said pin mounted within the bore therein. Another important features and benefits of the present invention depend anti, described with reference to a drawing and drawing from associated streamed via the network. For the description of said features in said ball number which may be within the range of the present invention each combination features as well as other combinations or itself be multiplexed using. In the embodiment of the present invention are shown in the drawing are preferred to a specification described description, same drawing symbols identical or similar or functionally same components exhibits. Figure 1 shows a also, groove structure during the production of a piston of the internal combustion engine shown in cross-section determine. Figure 2 shows a groove structure after said display region also produced a coarse surface shown II of Figure 1. Figure 3 shows a also, said groove structure produced after a coarse surface display region shown III of Figure 1. Not shown drawing piston of an internal combustion engine (1) is also shown in Figure 1 with reference to a cross-section 1 (of Figure 3 and also 2) when groove structure (2) is shown in Figure 2. 1 if signal conditions while they are produced. Groove structure (2) is produced as represented in Figure 1 II are shown in auditory canal after region 2, groove structure (2) is produced as represented in Figure 1 III after auditory canal region is shown in Figure 2. 3. Said groove structure (2) is said piston (1) of pin bore (4) of the internal surface (3) and introduced into the, said pin bore (4) are each aligned two bore section (5) same number. Said pin bore (4) the inner surface of (3) to said groove structure (2) setting a number [...] cutting tool (6) having a boring device (7) is in a fixed position and number ball rotation (rotationally fixed) to a boring bar (7) is attached to a boring bar said boring tool (7) axis (9) corresponding to the axis of rotation (8) rotation about a direction (10) is rotating. The, said cutting tool (6) has a direction of rotation (10) is rotating. Said boring bar (7) to an initial advancing direction (11) along pin apertures (4) rotational direction advances into (10) rotates along. Said boring bar (7) is said pin apertures (4) during forward into said pin bore (4) of the internal surface (3) and cutting tool (6) radially between relative motion will further generated. Said radial relative movement, said boring bar (7) the arrow (12) represented by the cutting tool (6) formed through the radial. Alternatively or further, said piston (1) axis (8) formed along transverse the direction of movement of number 1 (13) and/or axis of rotation (8) formed in a direction transverse to the direction of movement of number 1 (13) formed along transverse the direction of movement of number 2 (14) can be moved along. Said piston (1) fixing chuck (15) to the direction of movement of number 1 (13) and/or the direction of movement of number 2 (14) of the piston (1) can be moved. Said boring bar (7) is said pin bore (4) into the at least one spiral groove part is number 1 (16) (also with reference to a 2 and 3 also) is, cutting tool (6) and the inner surface (3) radially by relative movement between said pin bore (4) of the internal surface (3) introduced into the substrate. Wherein, said groove structure (2) are shown in the 1 is also produced conditions while they are in, said groove structure (2) is produced during said boring bar (7) is already said pin bore (4) advanced completely into the advancing direction (11) along said pin bore (4) and passed from the other. The number 1 groove (16) are also not shown in 1. Then, said boring bar (7) is said advancing direction (11) return (retraction) opposite direction (17) but along the direction of rotation (10) of rotation and to move continuously along, said cutting tool (6) has said pin bore (4) and said 2 passes of a boring bar (7) is said pin bore (4) feedback from each other. Said boring bar (7) is said pin bore (4) during said returns from inner surface (3) for said boring bar (7) or cutting tool (6) radial relative movement through said groove structure (2) of number 2 at least one helical groove (18) is passed bore (4) of the internal surface (3) introduced into the substrate. Wherein, said at least one number 1 groove (16) on said at least one number 2 groove (18) of said spiral rotation direction is at least one number 1 groove (16) on said at least one number 2 groove (18) is fixed to the. In the embodiment shown in, said single number 1 groove (16) and said single number 2 groove (18) is said pin bore (4) of each bore section (5) and introduced into, related whole bore section (5) extending helically along. Said number 1 groove (16) and number 2 groove (18) formed in the radial direction is different depth (19, 20) same number (reference 3 also). I.e., said number 1 groove (16) said number 2 has a groove (18) depth different from a depth of number 1 number 2 (19) have. In the embodiment shown in, said number 2 depth (20) includes a number 1 depth (19) is greater than. Said boring bar (7) moving said pin bore is number 1 has (4) advanced into, said boring bar (7) has a moving direction of the moving direction of said pin bore has other said number 1 number 2 (4) feedback from each other. The, said at least one number 2 groove (18) is at least one number 1 said groove (16) pitch (pitch) and the other end (22) have. I.e., said number 1 groove (16) of number 1 pitch (21) number 2 has a groove (18) of number 2 pitch (22) and the other end, in the embodiment shown in pitch number 2 (22) is greater than the pitch number 1. This configuration in particular, force said number 2 speed speed number 1 is a boring bar (7) of constant (unchanged) by rotational speed is achieved. This environment is, in Figure 1 feedback direction (17) shorter than the arrows advancing direction (11) displayed by arrows. In addition, said number 1 groove (16) has an axis of rotation (9) parallel to the advancing direction or (11) or return direction (17) formed width number 1 (23) and further comprises, said number 2 groove width said number 1 (18) width corresponding number 2 (24) with alternative, said number 2 in the embodiment shown in width (24) is said number 1 width (23) is greater than. In the embodiment shown in, grooves (16, 18) have depth (19, 20), pitch (21, 22) and width (23, 24) etc. is substantially constant. However, grooves (16, 18) have depth (19, 20) and/or pitch (21, 22) and/or width (23, 24) associated groove (16, 18) along accomplishing understood that can change. 4.... Pin bore, 3.... The inner surface, 2.... Groove structure, 7.... A boring bar, 6.... Cutting tool, 10.... The direction of rotation, The present invention relates to a method to form a groove structure (2) on an internal surface (3) of a pin bore (4) of a piston (1). According to the present invention, a boring tool, which comprises a boring bar (7) with a cutting tool (6) attached, rotates in a rotating direction (10) to move forward into the pin bore (4). During the process, one or more spiral first grooves (16) of the groove structure (2) having a first depth (19) and a first width (23) are introduced onto the internal surface (3). According to the present invention, afterwards, the boring bar (7) keeps the rotating direction (10) to return from the pin bore (4). While the boring bar (7) is returning, one or more spiral second grooves (18) of the groove structure having a second depth (20) distinguished from the first depth (19) and a rotating direction opposite to that of the first grooves (16) are introduced into the internal surface (3). Accordingly, the groove structure (2) is more simply, more cost-efficiently, and more rapidly introduced onto the internal surface (3). In addition, the present invention relates to a piston for an internal combustion engine, which has a pin bore (4) which comprises an internal surface (3) in which a groove structure (2) is provided by the above method. COPYRIGHT KIPO 2018 Piston pin bore (4) of the internal surface (3) grooves structure (2) as a method for forming, a rotatable boring bar (7) and at least one of cutting tool (6) steps a number [...], rotational direction (10) number 1 along the rotational speed (n1 ) Rotating said has a boring bar (7) number 1 a conveying speed (v1 ) Has said pin bore (4) and forward motion into number 1 depth (19) on number 1 width (23) having a groove assembly (2) of at least one spiral groove number 1 (16) to said inner surface (3) in introducing into including method, continue to said boring bar (7) speed is number 2 (v2 ) Has a direction of rotation (10) while maintaining the rotational speed (n2 ) Has said pin bore (4) and feedback from, said boring bar (7) returns to the number 1 during depth (19) which is bounded on number 2 depth (20) having a groove structure (2) of number 2 at least one helical groove (18) is said inner surface (3) is introduced into the method characterized. According to Claim 1, said boring bar (7) is compared to the speed according to said number 1 (v1) preferably has a conveying speed greater number 2 (v2) said pin bore (4) returns from the method characterized. According to Claim 1 or Claim 2, said boring bar (7) when returns to the groove structure (2) of number 2 at least one helical groove (18) is said inner surface (3) introduced into the grooves and said number 2 number 1 depth (19) greater in comparison with number 2 depth (20) via the method characterized. According to one of Claim 1 to Claim 3, said boring bar (7) when returns to the groove structure (2) of number 2 at least one helical groove (18) is said inner surface (3) introduced into the grooves and said number 2 number 1 width (23) compared to the greater number 2 width (24) characterized as having a method. According to one of Claim 1 to Claim 3, said boring bar (7) when returns to the groove structure (2) of number 2 at least one helical groove (18) is said inner surface (3) introduced into the grooves and said number 2 number 1 width (23) smaller than width number 2 (24) characterized as having a method. According to one of Claim 1 to Claim 5, said boring bar (7) when returns to the groove structure (2) of number 2 at least one helical groove (18) is said inner surface (3) introduced into the grooves and said number 2 number 1 groove (16) of number 1 pitch (21) greater compared to the pitch number 2 (22) characterized method may have. According to one of Claim 1 to Claim 6, said number 1 groove (16) while introducing into said pin bore (4) of the internal surface (3) in circumferential and/or axial direction in such a way the surrounding surface formed as a bore characterized by molding method. According to one of Claim 1 to Claim 7, at least one said number 2 groove (18) includes a pitch number 2 (22) and number 2 width (24) has, said number 2 width (24) said number 2 the pitch (22) at least 25% and maximum 50%, preferably from reaching a method characterized by about 40%. According to one of Claim 1 to Claim 8, said number 1 groove (16) is at least one cutting tool (6) to an internal surface (3) and said number 2 introduced into the groove (18) is said boring bar (7) attached to the cutting tool characterized introduced by another method. According to one of Claim 1 to Claim 9, said at least one number 1 groove (16) is up to 2 μm, preferably about 1 μm depth of number 1 (19) having an inner surface (3) characterized in that the introduced into, and/or said at least one number 2 groove (18) to the is 20 μm, preferably about 5 μm depth of number 2 (20) having an inner surface (3) is introduced into the method has the added feature. Piston for a combustion engine (1) pin bore (4) with said pin bore number 1 to number 10 along the groove structure either anti anti anti method (2) is co number internal surface (3) including a piston for an internal combustion engine characterized.
