Grinding ring sleeve tool

Abstract

The utility model discloses a grinding ring sleeve tool, which relates to the technical field of part processing equipment and comprises a clamp body, a grinding ring sleeve is arranged in an accommodating cavity in the clamp body, a gap is arranged between the outer wall of the grinding ring sleeve and the inner wall of the clamp body, an end cover is arranged on one side of the clamp body, and a fixing groove is arranged in the end cover. The inner wall of the clamp body extends to form a positioning face perpendicular to the axis of the grinding ring sleeve, the positioning face and the fixing groove abut against the two ends of the grinding ring sleeve respectively, and the grinding ring sleeve is clamped and fixed through the end cover and the clamp body. And the grinding ring sleeve moves in the tool for positioning, so that the size of an oil groove machined in the grinding ring sleeve is deviated.

Description

TECHNICAL FIELD

[0001] The utility model relates to part processing equipment technical field, especially a kind of ring sleeve frock. BACKGROUND

[0002] Ring sleeve is a tool for engine piston ring grinding, ring sleeve can improve the machining precision and surface finish of piston ring, prolong the service life of piston ring, oil groove is provided on the inner hole wall of ring sleeve, the oil groove is used to store honing fluid, during processing, piston ring reciprocates in ring sleeve, abrasive in honing fluid is scratched on the inner hole wall of ring sleeve, and the outer surface of piston ring is ground, but during processing the inner wall of ring sleeve, the size deviation of processed oil groove occurs due to the movement of ring sleeve caused by cutting force, and during honing piston ring, the outer wall of ring sleeve is extruded with the inner wall of frock, which causes wear between ring sleeve and frock.

[0003] To sum up, it is an urgent problem for those skilled in the art to develop a frock that can fix the position of ring sleeve and avoid mutual wear of parts. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of ring sleeve frock, solve the technical problem that ring sleeve moves in positioning frock and the size deviation of processed oil groove occurs during the process that lathe processes ring sleeve and makes it have oil groove.

[0005] To achieve the above-mentioned purpose, the utility model provides a kind of ring sleeve frock, including clamp body, accommodating cavity in clamp body is equipped with ring sleeve, ring sleeve outer wall is arranged with the clearance of clamp body inner wall, one side of clamp body is equipped with end cover, fixed slot is equipped in end cover, the inner wall of clamp body extends with the positioning surface perpendicular to the axis of ring sleeve, the positioning surface and fixed slot are respectively abutted with both ends of ring sleeve, and end cover and clamp body clamp and fix ring sleeve.

[0006] Preferably, the port outer periphery of ring sleeve near end cover side is equipped with annular boss, annular boss is coaxially arranged with ring sleeve, the diameter of annular boss is greater than the diameter of clamp body inner wall, after ring sleeve is sleeved in clamp body, the first abutment surface of annular boss near accommodating cavity side is abutted with clamp body port, fixed slot is matched with clamp body end, the inner wall diameter of fixed slot is greater than the diameter of annular boss, when clamp body equipped with ring sleeve is inserted into fixed slot, the second abutment surface of annular boss away from accommodating cavity side is abutted with fixed slot bottom surface, and fixed slot and clamp body clamp and fix annular boss.

[0007] Preferably, the inner wall of the fixture body is provided with a plurality of positioning grooves, the depth direction of each positioning groove pointing to the axis of the fixture body, the positioning groove extending from the positioning surface on the side away from the port of the fixture body towards the axis of the receiving cavity, so that the positioning surface abuts against the port on the side away from the annular boss of the grinding ring sleeve.

[0008] Preferably, when the port of the grinding ring sleeve on the side away from the annular boss abuts against the positioning surface, the first abutting surface abuts against the port of the fixture body, and the positioning surface restricts the axial movement of the grinding ring sleeve within the fixture body.

[0009] Preferably, a number of connectors are evenly distributed between the end cap and the fixture body. The extension direction of the connectors is parallel to the axial direction of the fixture body. By screwing on each connector, the end cap and the fixture body are clamped together by the annular boss, which restricts the rotation of the grinding ring within the fixture body.

[0010] Preferably, the fixture body has a plurality of fixing holes evenly distributed on the end face away from the end cover, and a retaining ring is provided on the edge of the end face. The retaining ring and the fixing holes fix the fixture body to the lathe. The bottom surface of the retaining ring end cover is provided with a through hole, the diameter of which is larger than the inner wall diameter of the grinding ring sleeve. The lathe processes the inner wall of the grinding ring sleeve through the through hole.

[0011] Preferably, the inner wall of the grinding ring sleeve near the annular boss has a tapered portion, the tapering direction of which is away from the end cover, and the diameter of the end of the tapered portion is equal to the diameter of the inner wall of the grinding ring sleeve.

[0012] Preferably, the inner wall edge of the fixture body near the end cap is chamfered, and the end cap, fixture body and grinding ring sleeve are all coaxially arranged.

[0013] Compared to the aforementioned background technology, the grinding ring sleeve tooling provided by this utility model includes a fixture body with a receiving cavity. A grinding ring sleeve is fitted inside the receiving cavity, and the outer diameter of the grinding ring sleeve is smaller than the diameter of the receiving cavity, thus setting a distance between the grinding ring sleeve and the fixture body. An end cap is provided on one side of the fixture body, and a fixing groove is provided inside the end cap. The inner wall of the fixing groove fits against the fixture body, and one end of the fixture body extends into the fixing groove and abuts against the bottom surface of the fixing groove. A positioning surface is provided on the inner wall of the side of the fixture body away from the end cap. The positioning surface extends towards the axis of the fixture body and is perpendicular to the axis of the fixture body. The positioning surface is aligned with the fixing groove. When the lathe is machining the oil groove on the inner wall of the grinding ring sleeve, the two ends of the grinding ring sleeve abut against the positioning surface and the fixing groove respectively. The grinding ring sleeve cannot move along its axis within the fixture body, so that the feed direction and feed amount are stable when the lathe is machining the oil groove, and the dimensional accuracy of the machined oil groove is high. In addition, when the honing part slides back and forth in the grinding ring sleeve for grinding, the honing part abuts against the side wall of the grinding ring sleeve, causing the side wall of the grinding ring sleeve to tighten in the direction away from its axis. Due to the gap between the inner wall of the fixture body and the outer wall of the grinding ring sleeve, the tightened grinding ring sleeve will not be squeezed against the inner wall of the fixture body, avoiding deformation of the grinding ring sleeve and the fixture body. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 This is a cross-sectional view of the assembly of the clamp body, grinding ring sleeve and end cap provided in an embodiment of the present utility model;

[0016] Figure 2 This is a cross-sectional view of the grinding ring sleeve provided in an embodiment of the present utility model;

[0017] Figure 3 This is a cross-sectional view of the clamp body provided in an embodiment of the present utility model;

[0018] Figure 4 This is a cross-sectional view of the end cap provided in an embodiment of the present utility model.

[0019] Among them, 1-clamp body; 2-grinding ring sleeve; 3-end cap; 31-through hole; 4-positioning groove; 41-positioning surface; 5-fixing groove; 6-annular boss; 61-first abutting surface; 62-second abutting surface; 7-fixing hole; 8-retaining ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] This utility model provides a tooling for a grinding ring sleeve 2, which includes a clamping body 1. The clamping body 1 has an internal receiving cavity for mounting the grinding ring sleeve 2. The grinding ring sleeve 2 extends into the receiving cavity from one side of the clamping body 1. The inner diameter of the clamping body 1 is larger than the outer diameter of the grinding ring sleeve 2. A gap is created between the mounted grinding ring sleeve 2 and the clamping body 1. Furthermore, a positioning surface 41 is provided inside the clamping body 1, extending from the inner wall of the clamping body 1 towards the clamping body. Extending along the axial direction, the inner wall of the fixture body 1 has a protrusion. When the grinding ring sleeve 2 penetrates into the fixture body 1 a certain distance, one end face of the grinding ring sleeve 2 abuts against the positioning surface 41. The positioning surface 41 is used to restrict the grinding ring sleeve 2 from sliding along its axial direction inside the fixture body 1. Furthermore, the fixture body 1 has an end cap 3 at the end opposite to the positioning surface 41. The end cap 3 has a fixing groove 5 inside, which fits against the outer wall of the fixture body 1. The fixture body 1 is thus fitted inside the fixture body 1. The grinding ring sleeve 2 extends into the end cover 3 together, so that the grinding ring sleeve 2 abuts against the bottom surface of the fixing groove 5. The grinding ring sleeve 2 is clamped and fixed between the fixture body 1 and the end cover 3. The degree of freedom of the grinding ring sleeve 2 in the axial direction is restricted to prevent the grinding ring sleeve 2 from moving within the fixture body 1 when the lathe is machining the oil groove on the inner wall of the grinding ring sleeve 2, which would cause deviation in the size of the oil groove. After the oil groove is machined, honing fluid is added to the oil groove, and a piston ring is installed inside the grinding ring sleeve 2. The outer wall of the piston ring is flush with the grinding ring sleeve 2. After fitting, the piston ring reciprocates within the grinding ring sleeve 2. The honing fluid on the inner wall of the grinding ring sleeve 2 grinds the outer wall of the piston ring. During the grinding process, the piston ring abuts against the outer wall of the grinding ring sleeve 2, causing the side wall of the grinding ring sleeve 2 to tighten in the direction away from its axis. Due to the spacing between the grinding ring sleeve 2 and the fixture body 1, the grinding ring sleeve 2 has a movement margin along its outer circumference, which avoids the grinding ring sleeve 2 from being squeezed between the contact surface of the grinding ring sleeve 2 and the fixture body 1 after the piston ring is installed, thus preventing damage to the processing equipment.

[0023] Please refer to the instruction manual appendix. Figure 2 The grinding ring sleeve 2 has an annular boss 6 on the side near the end cap 3. The annular boss 6 extends outward from the grinding ring sleeve 2 and is coaxially arranged with the grinding ring sleeve 2. Since the diameter of the annular boss 6 is larger than the diameter of the inner wall of the clamp body 1, when the grinding ring sleeve 2 extends into the clamp body 1, the annular boss 6 is blocked outside the port of the clamp body 1. The first abutting surface 61 of the annular boss 6 near the receiving cavity abuts against the port of the clamp body 1. Furthermore, the diameter of the annular boss 6 is smaller than the diameter of the inner wall of the fixing groove 5. That is to say, the annular boss 6 can extend into the fixing groove 5 together with the clamp body 1. The second abutting surface 62 of the annular boss 6 on the side away from the receiving cavity abuts against the bottom surface of the fixing groove 5. That is, after the clamp body 1, the grinding ring sleeve 2 and the end cap 3 are assembled, the annular boss 6 is held between the end cap 3 and the end face of the clamp body 1. The annular boss 6 is connected to the grinding ring sleeve 2, and the natural setting state of the grinding ring sleeve 2 is further determined.

[0024] Please refer to the instruction manual appendix. Figure 3 The inner wall of the fixture body 1 is evenly provided with several positioning grooves 4. All positioning grooves 4 are located on the same horizontal plane, and the depth direction of each positioning groove 4 points towards the axis of the fixture body 1. Square holes are provided between adjacent positioning grooves 4, ensuring the fixture body 1 has sufficient strength while reducing production costs. The side wall of the positioning groove 4 along the height direction of the fixture body 1 and away from the end cover 3 forms a positioning surface 41. The positioning surface 41 extends towards the axis of the fixture body 1, such that the radius of the arc edge of the positioning surface 41 near the axis of the fixture body 1 is smaller than the diameter of the inner wall of the fixture body 1. When the grinding ring sleeve... 2. After extending a certain distance into the fixture body 1, the end face of the grinding ring sleeve 2 facing away from the annular boss 6 abuts against the positioning surface 41. In addition, the distance between the positioning surface 41 and the first abutting surface 61 is equal to the distance from the positioning surface 41 to the port of the fixture body 1. That is, when the positioning surface 41 abuts against the port of the grinding ring sleeve 2 facing away from the annular boss 6, the end face of the fixture body 1 fits against the first abutting surface 61 of the annular boss 6. After the fixture body 1, the grinding ring sleeve 2 and the end cover 3 are assembled, the two ends of the grinding ring sleeve 2 abut against the positioning surface 41 and the bottom surface of the fixing groove 5 respectively, and the grinding ring sleeve 2 is clamped and fixed.

[0025] Furthermore, several connectors (not shown in the figure) are provided on the end face of the end cap 3. Each connector is arranged parallel to the axis of the fixture body 1. Each connector passes through the bottom surface of the end cap 3 and extends into the side wall of the fixture body 1. The connectors fix the end cap 3 to the fixture body 1. An annular boss 6 is clamped between the end cap 3 and the port of the fixture body 1. Before machining the grinding ring sleeve 2, each connector is screwed toward the side closer to the fixture body 1. As the connectors are screwed, the distance between the port of the fixture body 1 and the bottom surface of the fixing groove 5 gradually decreases, and the bottom surface of the fixture body 1 and the end cap 3 are aligned with the annular boss 6. As the clamping force of the boss 6 increases, the frictional force on the first contact surface 61 and the second contact surface 62 also increases. When machining the oil groove on the inner wall of the grinding ring sleeve 2, the frictional force on the annular boss 6 is perpendicular to the axial direction of the grinding ring sleeve 2. When the lathe cutting edge cuts the inner wall of the grinding ring sleeve 2, the frictional force on the annular boss 6 can eliminate the influence of the cutting edge thrust, avoid affecting the feed rate of the cutting edge, and prevent the oil groove depth dimension from being uneven. In addition, the frictional force on the annular boss 6 also prevents the grinding ring sleeve 2 from rotating around the axis in the fixture, further ensuring the machining accuracy of the oil groove.

[0026] Please refer to the instruction manual appendix. Figure 4The fixture body 1 has a retaining ring 8 at one end away from the annular boss 6. The retaining ring 8 is located on the edge of the fixture body 1 and extends along the axis of the fixture body 1 away from the end cover 3. On the end face of the fixture body 1, a plurality of fixing holes 7 are evenly distributed on the inner side of the retaining ring 8. In some embodiments, the outer wall of the lathe connecting plate fits against the inner wall of the retaining ring 8. The connecting plate extends into the interior of the retaining ring 8 and cooperates with the connecting plate through the fixing holes 7 to assemble the fixture body 1 on the lathe. It should be noted that the bottom surface of the end cover 3 has a through hole 31. The diameter of the through hole 31 is larger than the diameter of the grinding ring sleeve 2. The cutting edge of the lathe can enter the grinding ring sleeve 2 through the through hole 31 of the end cover 3 and process oil grooves on the inner wall of the grinding ring sleeve 2.

[0027] A tapered section is provided on the inner wall of the port of the grinding ring sleeve 2 near the end cover 3. The tapered section gradually narrows along the axis of the grinding ring sleeve 2 towards the side away from the end cover 3. The end of the tapered section is equal to the diameter of the inner wall of the grinding ring sleeve 2, so that the diameter of the port of the grinding ring sleeve 2 is larger than the diameter of the inner wall of the grinding ring sleeve 2. When the cutting edge extends into the interior of the grinding ring sleeve 2, it avoids the cutting edge from colliding with the port of the grinding ring sleeve 2. In addition, the tapered section makes the process of the cutting edge extending into the grinding ring sleeve 2 from the port and abutting against the inner wall of the grinding ring sleeve 2 more gentle, ensuring that the size of the processed oil groove is uniform.

[0028] In addition, a chamfer is provided on the side of the fixture body 1 near the end cap 3. The chamfer increases the diameter of the port on the side of the end cap 3 of the fixture body 1. When assembling the fixture body 1 and the grinding ring sleeve 2, the larger port of the fixture body 1 makes it easier for the grinding ring sleeve 2 to be inserted. The chamfered edge of the port of the fixture body 1 can guide the grinding ring sleeve 2 to be inserted into the fixture body 1.

[0029] In some embodiments, the fixture body 1 is assembled with the lathe connecting plate through the fixing hole 7 and the retaining ring 8. A grinding ring sleeve 2 is provided in the receiving cavity of the fixture body 1. The end face of the grinding ring sleeve 2 facing away from the annular boss 6 abuts against the positioning surface 41 extending from the inner edge of the fixture body 1. The annular boss 6 at the other end of the grinding ring sleeve 2 abuts against the port of the fixture body 1. The end cap 3 is fitted onto the outer periphery of the fixture body 1, so that the end of the fixture body 1 extends into the fixing groove 5. The second abutting surface 62 of the annular boss 6 abuts against the bottom surface of the fixing groove 5. The bottom surface of the end cap 3 and the positioning surface 41 clamp and fix the grinding ring sleeve 2, restricting the axial degree of freedom of the grinding ring sleeve 2. A connector is inserted between the end cap 3 and the fixture body 1. The connector is screwed toward the receiving cavity of the fixture body 1 to make... The bottom surface of the fixed groove 5 clamps the annular boss 6 with the port of the fixture body 1. The lathe cutting edge enters the interior of the grinding ring sleeve 2 through the through hole 31 and cuts the inner wall of the grinding ring sleeve 2. Because the grinding ring sleeve 2 is clamped by the end cover 3 and the fixture body 1, the grinding ring sleeve 2 does not move during the processing of the oil groove, and the feed of the cutting edge is stable. Because the annular boss 6 is tightly clamped, the grinding ring sleeve 2 does not rotate, and the position of the grinding ring sleeve 2 in the fixture body 1 is stable. The processed oil groove has high dimensional accuracy. In the subsequent honing process, a piston ring is set in the grinding ring sleeve 2. The piston ring causes the grinding ring sleeve 2 to tighten. The gap between the grinding ring sleeve 2 and the fixture body 1 is set so that the outer wall of the tightened grinding ring sleeve 2 does not abut against the inner wall of the fixture body 1, thus avoiding damage to the grinding parts due to the tightening of the grinding ring sleeve 2.

[0030] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0031] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A grinding ring sleeve tooling, characterized in that, The fixture includes a clamp body (1), and a grinding ring sleeve (2) is provided in the receiving cavity inside the clamp body (1). The outer wall of the grinding ring sleeve (2) is separated from the inner wall of the clamp body (1). An end cap (3) is provided on one side of the clamp body (1). A fixing groove (5) is provided in the end cap (3). A positioning surface (41) perpendicular to the axis of the grinding ring sleeve (2) extends from the inner wall of the clamp body (1). The positioning surface (41) and the fixing groove (5) respectively abut against the two ends of the grinding ring sleeve (2). The end cap (3) and the clamp body (1) clamp and fix the grinding ring sleeve (2).

2. The grinding ring sleeve tooling according to claim 1, characterized in that, The grinding ring sleeve (2) has an annular boss (6) on the outer periphery of the port near the end cap (3). The annular boss (6) is coaxially arranged with the grinding ring sleeve (2). The diameter of the annular boss (6) is larger than the inner wall diameter of the clamp body (1). After the grinding ring sleeve (2) is fitted onto the clamp body (1), the first abutting surface (61) of the annular boss (6) near the receiving cavity abuts against the port of the clamp body (1). The fixing groove (5) cooperates with the end of the clamp body (1). The inner wall diameter of the fixing groove (5) is larger than the diameter of the annular boss (6). When the clamp body (1) with the grinding ring sleeve (2) extends into the fixing groove (5), the second abutting surface (62) of the annular boss (6) away from the receiving cavity abuts against the bottom surface of the fixing groove (5). The fixing groove (5) and the clamp body (1) clamp and fix the annular boss (6).

3. The grinding ring sleeve tooling according to claim 2, characterized in that, The inner wall of the fixture body (1) is provided with a plurality of positioning grooves (4). The depth direction of each positioning groove (4) points to the axis of the fixture body (1). The positioning groove (4) extends from the positioning surface (41) on the side away from the port of the fixture body (1) towards the axis of the receiving cavity, so that the positioning surface (41) abuts against the port of the grinding ring sleeve (2) on the side away from the annular boss (6).

4. The grinding ring sleeve tooling according to claim 3, characterized in that, When the port of the grinding ring sleeve (2) facing away from the annular boss (6) abuts against the positioning surface (41), the first abutting surface (61) abuts against the port of the clamp body (1), and the positioning surface (41) restricts the axial movement of the grinding ring sleeve (2) within the clamp body (1).

5. The grinding ring sleeve tooling according to claim 4, characterized in that, A plurality of connectors are evenly distributed between the end cap (3) and the clamp body. The extension direction of the connectors is parallel to the axial direction of the clamp body (1). By screwing each connector, the end cap (3) and the clamp body (1) clamp the annular boss (6), thereby restricting the grinding ring sleeve (2) from rotating within the clamp body (1).

6. The grinding ring sleeve tooling according to claim 5, characterized in that, The fixture body (1) has a plurality of fixing holes (7) evenly distributed on the end face away from the end cap (3). The fixture body (1) has a retaining ring (8) on the edge of the end face away from the end cap (3). The retaining ring (8) and the fixing holes (7) fix the fixture body (1) to the lathe. The retaining ring (8) has a through hole (31) on the bottom surface of the end cap (3). The diameter of the through hole (31) is larger than the inner wall diameter of the grinding ring sleeve (2). The lathe processes the inner wall of the grinding ring sleeve (2) through the through hole (31).

7. The grinding ring sleeve tooling according to claim 6, characterized in that, The inner wall of the grinding ring sleeve (2) near the annular boss (6) has a tapered portion. The tapering direction of the tapered portion is away from the end cap (3). The diameter of the end of the tapered portion is equal to the diameter of the inner wall of the grinding ring sleeve (2).

8. The grinding ring sleeve tooling according to claim 7, characterized in that, The inner wall edge of the clamp body (1) near the end cap (3) is chamfered, and the end cap (3), the clamp body (1) and the grinding ring sleeve (2) are all coaxially arranged.

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