A piston pin hole bronze bushing embedding tool

Abstract

This utility model relates to the field of piston manufacturing equipment, specifically to a tooling for inserting a copper sleeve into a piston pin hole. The tooling includes: a base on which an mounting plate is mounted; a positioning pin, detachably and adjustablely mounted on the mounting plate and adapted to position the copper sleeve; and an inner stop block adapted to mate with the inner stop of the piston and abutting against the positioning pin. Through the above-described design, this utility model's tooling for inserting a copper sleeve into a piston pin hole can conveniently insert the copper sleeve into the pin hole and can position the copper sleeve, preventing improper or excessive installation.

Description

Technical Field

[0001] This utility model relates to the field of piston manufacturing equipment, and specifically to a tooling for inserting a copper sleeve into a piston pin hole. Background Technology

[0002] As the heart of an internal combustion engine, the piston plays a crucial role in energy transmission. Simultaneously, high pressure loads, high thermal loads, and high-frequency reciprocating stresses necessitate sufficient durability in the piston. The pin bore is the area of ​​highest friction and stress concentration in the piston structure, often becoming a bottleneck limiting its lifespan. Copper bushings possess excellent wear resistance and lubrication properties; installing copper bushings into the pin bore can significantly improve the working conditions of the pin bore and extend the piston's service life.

[0003] Existing copper bushings are often installed manually, with the bushing removed from liquid nitrogen and manually aligned with the piston pin hole. However, in actual use, it has been found that the bushing expands rapidly after being removed from liquid nitrogen, making it very easy to misinstall during insertion. Furthermore, if the bushing is installed too quickly, it may slip into the piston's inner recess, rendering the bushing unusable.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To improve or solve the technical problem of the difficulty in nesting copper sleeves in the prior art, this utility model provides a tooling for inserting copper sleeves into piston pin holes. The tooling includes: a base on which an mounting plate is mounted; a positioning pin, which is detachably and adjustablely mounted on the mounting plate and is adapted to position the copper sleeve; and an inner stop block adapted to mate with the inner stop of the piston and abutting against the positioning pin.

[0006] This utility model discloses a piston pin hole copper sleeve insertion fixture, comprising a base, a positioning pin, and an inner stop block. The base facilitates piston placement and sliding. A mounting plate is installed on the base for mounting the positioning pin. The positioning pin is detachably and adjustablely mounted on the mounting plate, aligning with the piston pin hole. The copper sleeve is fitted onto the positioning pin and inserted into the pin hole. The inner stop block mates with the piston's inner stop, limiting its position within the piston's inner stop. When the positioning pin is inserted into the pin hole, the inner stop block abuts against the positioning pin, positioning it and thus positioning the copper sleeve on the positioning pin, preventing misalignment between the copper sleeve and the pin hole. Through these features, this utility model's piston pin hole copper sleeve insertion fixture can conveniently insert the copper sleeve into the pin hole and position it, preventing improper or excessive installation.

[0007] Furthermore, the inner stop block includes an abutting portion that mates with the inner stop of the piston, and a lifting portion connected to the abutting portion; the lifting portion is adapted to extend out of the piston.

[0008] Furthermore, the positioning pin includes a mounting portion connected to the mounting plate, a connecting portion connected to the mounting portion, and a positioning portion that mates with the copper sleeve; the connecting portion has an abutment surface suitable for abutting against the copper sleeve.

[0009] Furthermore, a guide surface is formed on the positioning part.

[0010] Furthermore, a waist-shaped groove is provided on the mounting plate, and the mounting part is adjustablely arranged in the waist-shaped groove.

[0011] Furthermore, bolt holes are provided on the mounting part, and mounting bolts are arranged in the bolt holes; the nuts of the mounting bolts abut against the mounting plate.

[0012] Furthermore, the base and the mounting plate are detachably connected by bolts.

[0013] Furthermore, a support leg is provided below the base.

[0014] In summary, compared with the prior art, this utility model has the following beneficial effects:

[0015] The locating pin is detachably and adjustablely mounted on the mounting plate and can be aligned with the pin hole of the piston. The copper sleeve can be fitted onto the locating pin and inserted into the pin hole. The inner stop block matches the inner stop of the piston and can be limited within the inner stop of the piston. When the locating pin is inserted into the pin hole, it abuts against the locating pin to position the locating pin, and then positions the copper sleeve on the locating pin to prevent misalignment between the copper sleeve and the pin hole. Attached Figure Description

[0016] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a schematic diagram of an embodiment of a piston pin hole copper sleeve inlay tool of the present invention;

[0018] Figure 2 This is a schematic diagram of the positioning pin and inner stop block in a piston pin hole copper sleeve inlay tooling of this utility model.

[0019] Figure 3 This is a schematic diagram of a pre-support component in a piston pin hole copper sleeve inlay tooling according to the present invention.

[0020] List of reference numerals in the attached drawings: 1. Base; 11. Support leg; 12. Mounting plate; 2. Positioning pin; 21. Mounting part; 22. Connecting part; 23. Positioning part; 24. Abutting surface; 25. Guide surface; 3. Inner stop block; 31. Abutting part; 32. Lifting part; 4. Pre-support component; 41. Support plate; 42. Adjusting stud. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] To improve or solve the technical problem of the difficulty in nesting copper sleeves in the prior art, this utility model provides a tooling for inserting copper sleeves into piston pin holes. The tooling includes: a base 1, on which an mounting plate 12 is mounted; a positioning pin 2, which is detachably and adjustablely mounted on the mounting plate 12 and is suitable for positioning the copper sleeve; and an inner stop block 3, which is suitable for matching the inner stop of the piston and abuts against the positioning pin 2.

[0025] Figure 1 This is a schematic diagram of an embodiment of a piston pin hole copper sleeve inserting fixture according to this utility model. Figure 1 As shown, in one or more embodiments, the piston pin hole copper sleeve inlay tool of this utility model includes a base 1, a positioning pin 2 and an inner stop block 3.

[0026] Figure 2 This is a schematic diagram of the positioning pin and inner stop block in a piston pin hole copper sleeve inlay tooling according to this utility model. Figure 1 and Figure 2As shown, in one or more embodiments, the base 1 is generally rectangular in shape. Countersunk holes are provided at the four corners of the base 1, and bolts are installed within these countersunk holes. Four support legs 11 are provided below the base 1, each located at one of the four corners of the base 1, and are fixedly connected to the base 1 by bolts. Furthermore, a mounting plate 12 is installed on the base 1, and the base 1 and mounting plate 12 are detachably connected by bolts. Specifically, the mounting plate 12 is generally rectangular, with countersunk holes in the base 1, and bolts are installed within these countersunk holes. Threaded holes are provided on the mounting plate 12, and the bolts are threaded into these holes, thereby detachably fixing the mounting plate 12 to the base 1. Furthermore, a slotted groove is provided on the mounting plate 12 for installing locating pins 2.

[0027] See also Figure 1 and Figure 2 The positioning pin 2 is detachably mounted on the mounting plate 12. In one or more embodiments, the positioning pin 2 includes a mounting portion 21 connected to the mounting plate 12, a connecting portion 22 connected to the mounting portion 21, and a positioning portion 23 that mates with a copper sleeve; the copper sleeve is fitted onto the positioning portion 23. Specifically, the mounting portion 21 mates with a waist-shaped groove and is adjustablely arranged within the waist-shaped groove. A bolt hole is provided on the mounting portion 21, and a mounting bolt is arranged in the bolt hole. The nut of the mounting bolt and the connecting portion 22 are respectively arranged on both sides of the mounting plate 12, thereby fixing the positioning pin 2 onto the mounting plate 12. Further, the connecting portion 22 is generally cylindrical, with one end abutting against the mounting plate 12 and the other end connected to the positioning portion 23. The positioning portion 23 is generally cylindrical, and its diameter is smaller than the diameter of the connecting portion 22; the copper sleeve is fitted onto the circumferential outer side of the positioning portion 23. Specifically, a contact surface 24 is formed on the connecting part 22, and the copper sleeve abuts against the contact surface 24 to position the copper sleeve. Furthermore, a guide surface 25 is formed on the positioning part 23 so that the copper sleeve can be easily fitted onto the positioning part 23.

[0028] See also Figure 1 and Figure 2The inner stop block 3 is adapted to mate with the inner stop of the piston. In one or more embodiments, the inner stop block 3 includes an abutment portion 31 that mates with the inner stop of the piston, and a lifting portion 32 connected to the abutment portion 31. Specifically, the lower end and both sides of the abutment portion 31 abut against the interior of the piston, thereby fixing the inner stop block 3 inside the piston. The lifting portion 32 is generally rectangular and connected to the abutment portion 31. The top of the lifting portion 32 extends out of the piston to allow the inner stop block 3 to be inserted into and removed from the piston. After cleaning the piston and the copper sleeve, the piston is placed on the base plate, and the position of the positioning pin 2 is adjusted to be horizontal with the piston pin hole; the copper sleeve is placed in liquid nitrogen for freezing, and then removed from the liquid nitrogen and quickly installed onto the positioning pin 2; the inner stop block 3 is placed into the piston, and the piston is pushed to insert the copper sleeve into the pin hole, thus achieving the insertion and installation of the copper sleeve.

[0029] Figure 3 This is a schematic diagram of a pre-support component in a piston pin hole copper sleeve inlay fixture of this utility model. Figure 1 , Figure 2 and Figure 3 As shown, in another embodiment, a pre-support member 4 is also arranged within the waist-shaped groove. The pre-support member 4 includes a support plate 41 that abuts against the mounting portion 21, and an adjusting stud 42 connected to the support plate 41. Specifically, the support plate 41 is generally disc-shaped, and a threaded hole communicating with the bottom of the waist-shaped groove is provided on the mounting plate 12. The threaded hole matches the adjusting stud 42. By rotating the adjusting stud 42, the height of the support plate 41 can be adjusted. Furthermore, an anti-loosening nut is provided on the adjusting stud 42. When installing the positioning pin 2, the adjusting stud 42 is rotated to bring the support plate 41 to a predetermined height, and then the mounting portion 21 of the positioning pin 2 is placed in the waist-shaped groove. The positioning pin 2 is then fixed to the mounting plate 12 by the mounting bolts.

[0030] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A tooling for inserting a copper sleeve into a piston pin hole, characterized in that, include: A base (1) on which an mounting plate (12) is mounted; The positioning pin (2) is detachably and adjustablely mounted on the mounting plate (12) and is adapted to position the copper sleeve; The inner stop block (3) is adapted to mate with the inner stop of the piston and abuts against the locating pin (2).

2. The piston pin hole copper sleeve insert fixture according to claim 1, characterized in that, The inner stop block (3) includes an abutting part (31) that matches the inner stop of the piston, and a lifting part (32) connected to the abutting part (31); the lifting part (32) is adapted to extend out of the piston.

3. The piston pin hole copper sleeve insert fixture according to claim 1, characterized in that, The positioning pin (2) includes a mounting part (21) connected to the mounting plate (12), a connecting part (22) connected to the mounting part (21), and a positioning part (23) that mates with the copper sleeve; the connecting part (22) has an abutting surface (24) suitable for abutting against the copper sleeve.

4. The piston pin hole copper sleeve insert fixture according to claim 3, characterized in that, A guide surface (25) is formed on the positioning part (23).

5. The piston pin hole copper sleeve insert fixture according to claim 3, characterized in that, A waist-shaped groove is provided on the mounting plate (12), and the mounting part (21) is adjustablely arranged in the waist-shaped groove.

6. The piston pin hole copper sleeve insert fixture according to claim 5, characterized in that, A bolt hole is provided on the mounting part (21), and a mounting bolt is arranged in the bolt hole; the nut of the mounting bolt abuts against the mounting plate (12).

7. The piston pin hole copper sleeve insert fixture according to claim 1, characterized in that, The base (1) and the mounting plate (12) are detachably connected by bolts.

8. The piston pin hole copper sleeve insert fixture according to claim 1, characterized in that, A support leg (11) is provided below the base (1).

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