A piston pin hole drilling tool

Abstract

This utility model discloses a piston pin drilling fixture, relating to the field of machining equipment technology. It includes a base plate, a lead screw, and a support block. One end of the lead screw is connected to a primary motor. A compression ring is provided at the top of the connecting frame, and a limit block is connected to one side of the compression ring. A rotating shaft is provided at the output end of a secondary motor. In this utility model, by setting up the compression ring and the limit block, the rotation of the lead screw, driven by the primary motor, can adjust the usage position of the two sets of connecting frames. The two sets of compression rings can clamp both ends of the piston pin body at the top of the support block, and the limit block limits the top of the piston pin body, ensuring and improving the stability of the piston pin body during machining. When it is necessary to adjust the drilling angle of the piston pin body, the support block is adjusted 180 degrees by the secondary motor, improving the flexibility of adjusting the machining angle of the piston pin body and effectively improving the machining accuracy of the piston pin body.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a piston drilling tool. Background Technology

[0002] A piston pin is a cylindrical pin mounted on the piston skirt. Its center passes through the connecting rod small end bore to connect the piston and connecting rod, transmitting the gas force on the piston to the connecting rod. It is generally made of high-quality alloy steel and is hollow. Under high-temperature conditions, the piston pin withstands large periodic impact loads. Because the piston pin has a small swing angle in the pin bore, it is difficult to form a lubricating oil film, resulting in poor lubrication conditions. Therefore, the piston pin must have sufficient rigidity, strength, and wear resistance, and its mass should be as small as possible. The pin and pin bore should have an appropriate fit clearance and good surface quality. Under normal circumstances, the rigidity of the piston pin is particularly important. If the piston pin bends or deforms, it may damage the piston pin seat.

[0003] Currently, when piston pin drilling fixtures are used to fix piston pins, the machining allowance for the piston pin hole machining process is relatively large. Since the machining accuracy requirements for piston pin holes are very high, if the piston pin fixed inside the fixture shakes, it is easy to cause insufficient machining accuracy of the piston pin, which may lead to the roundness, cylindricity and other parameters of the hole exceeding the allowable error range. In order to solve this technical problem, this utility model proposes a piston pin drilling fixture. Utility Model Content

[0004] The main objective of this invention is to provide a piston drilling tool that can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A piston drilling tool includes a base plate, a lead screw, and a support block. One end of the lead screw is connected to a first motor. Two sets of threads are provided on opposite sides of the lead screw. Two sets of connecting brackets are threaded through the outer side of the lead screw. A compression ring is provided at the top of the connecting bracket. A limit block is connected to one side of the compression ring. A second motor is provided at the top of the base plate. A rotating shaft is provided at the output end of the second motor, and the top of the rotating shaft is connected to the bottom end of the support block.

[0007] Preferably, a first mounting block is provided on the top of the base plate, and one side of the first mounting block is connected to one end of the first motor. A second mounting block is provided on the top of the base plate, and the second mounting block is located on one side of the first mounting block.

[0008] Preferably, a guide rod is connected to one side of the first mounting block, and the guide rod is located behind the lead screw, and the guide rod moves through the interior of the connecting frame.

[0009] Preferably, a mounting shell is provided on the top of the base plate, and the mounting shell is located outside the No. 2 motor. Multiple sets of heat dissipation grooves are symmetrically opened through the outer side of the mounting shell.

[0010] Preferably, the top of the support block is an arc-shaped groove, and a slot is provided on the top of the support block. A magnetic plate is connected inside the slot.

[0011] Preferably, the top of the support block is movably connected to a piston pin body, and the piston pin body is magnetically attracted to the magnetic plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, by incorporating components such as compression rings and limiting blocks, the rotation of the lead screw via a primary motor allows for adjustment of the positions of the two sets of connecting frames. The two sets of compression rings clamp both ends of the piston pin body at the top of the support block, while the limiting blocks limit the top of the piston pin body, ensuring stability during piston pin body machining. When the drilling angle of the piston pin body needs adjustment, a secondary motor allows for 180-degree angle adjustment of the support block, improving the flexibility of adjusting the machining angle of the piston pin body and effectively enhancing the machining accuracy of the piston pin body.

[0014] In this utility model, by setting up components such as magnetic plates, a guide rod is used to move through the interior of the connecting frame. The guide rod can guide and limit the movement of the two sets of connecting frames. Multiple heat dissipation slots opened on the outside of the mounting shell can dissipate the heat generated by the operation of the No. 1 motor, thus avoiding excessive internal temperature of the No. 1 motor. The magnetic plate is used to magnetically attract the piston pin body, which can reduce the displacement of the piston pin body during the rotation of the support block. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a piston drilling tool according to the present invention;

[0016] Figure 2 This is a schematic diagram of the support block structure of a piston drilling pin hole tool according to the present invention.

[0017] Figure 3 This is a schematic diagram of the extrusion ring structure of a piston drilling pin hole tool according to the present invention;

[0018] Figure 4 This is a schematic diagram of the connecting frame structure of a piston drilling pin hole tool according to the present invention;

[0019] Figure 5 This is a schematic diagram of section A of a piston drilling pin hole tool according to this utility model.

[0020] In the diagram: 1. Base plate; 2. Mounting block 1; 3. Lead screw; 4. Mounting block 2; 5. Motor 1; 6. Guide rod; 7. Connecting frame; 8. Extrusion ring; 9. Limiting block; 10. Mounting shell; 11. Heat dissipation groove; 12. Motor 2; 13. Rotating shaft; 14. Support block; 15. Locking groove; 16. Magnetic plate; 17. Piston pin body. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a tooling for drilling pin holes for pistons;

[0023] The system includes a base plate 1, a lead screw 3, and a support block 14. One end of the lead screw 3 is connected to a first motor 5. Two sets of threads are provided on opposite sides of the lead screw 3. Two sets of connecting brackets 7 are threaded through the outer side of the lead screw 3. A compression ring 8 is provided at the top of the connecting bracket 7. A limit block 9 is connected to one side of the compression ring 8. A second motor 12 is provided at the top of the base plate 1. A rotating shaft 13 is provided at the output end of the second motor 12, and the top end of the rotating shaft 13 is connected to the bottom end of the support block 14.

[0024] The connecting frame 7 is an isosceles triangular plate. Two sets of connecting frames 7 are used to connect to the positive and negative threads opened on the outside of the lead screw 3 respectively. Since one end of the lead screw 3 is connected to the output end of the first motor 5, when the first motor 5 is running, the rotation of the lead screw 3 can adjust the usage position of the two sets of connecting frames 7. The connecting frame 7 drives the extrusion ring 8 to move towards the support block 14. The two sets of extrusion rings 8 can clamp the two ends of the piston pin body 17 at the top of the support block 14. The limit block 9 limits the top end of the piston pin body 17, which can ensure the stability of the piston pin body 17 during processing. Since the rotating shaft 13 is connected to the bottom end of the support block 14, when the second motor 12 is running, the support block 14 can be adjusted by 180 degrees, which improves the flexibility of adjusting the processing angle of the piston pin body 17 and effectively improves the processing accuracy of the piston pin body 17.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a tooling for drilling pin holes for pistons;

[0026] The top of the base plate 1 is provided with a first mounting block 2, and one side of the first mounting block 2 is connected to one end of the first motor 5. The top of the base plate 1 is provided with a second mounting block 4, and the second mounting block 4 is located on one side of the first mounting block 2. One side of the first mounting block 2 is connected to a guide rod 6, and the guide rod 6 is located behind the lead screw 3. The guide rod 6 movably passes through the interior of the connecting frame 7. The top of the base plate 1 is provided with a mounting shell 10, and the mounting shell 10 is located outside the second motor 12. Multiple sets of heat dissipation slots 11 are symmetrically opened through the outer side of the mounting shell 10. The top of the support block 14 is arc-shaped groove, and the top of the support block 14 is provided with a locking slot 15. The inside of the locking slot 15 is connected to a magnetic plate 16. The top of the support block 14 is movably connected to a piston pin body 17, and the piston pin body 17 and the magnetic plate 16 are magnetically attracted to each other.

[0027] The base plate 1 is the main bottom support component of the piston drilling pin hole tooling. It provides mounting support for the top working components. Mounting blocks 2 and 4 support the lead screw 3 and guide rod 6, with mounting block 2 also supporting the motor 5. The guide rod 6 extends through the interior of the connecting frame 7, guiding and limiting the movement of the two sets of connecting frames 7. The mounting shell 10, located outside the motor 5, provides protection and covers it. Multiple heat dissipation slots 11 on the outside of the housing 10 can dissipate the heat generated by the operation of the No. 1 motor 5u, and prevent the internal temperature of the No. 1 motor 5 from becoming too high. The top of the support block 14 is set in an arc-shaped groove, and the support block 14 can provide locking support for the piston pin body 17. The piston pin body 17 is magnetically attracted by the magnetic plate 16, which can reduce the displacement of the piston pin body 17 during the rotation of the support block 14. The magnetic plate 16 is set inside the locking groove 15 by locking, and the locking groove 15 can position and install the magnetic plate 16.

[0028] Before use, place the piston pin body 17 on the top of the support block 14. Use the magnetic plate 16 to magnetically attract the piston pin body 17 to the support block 14. The rotation of the lead screw 3 by the first motor 5 can adjust the position of the two sets of connecting brackets 7. The two sets of extrusion rings 8 can clamp the two ends of the piston pin body 17 on the top of the support block 14. The limit block 9 can limit the top of the piston pin body 17, which can ensure the stability of the piston pin body 17 during processing. When it is necessary to adjust the drilling angle of the piston pin body 17, the second motor 12 can be used to adjust the support block 14 by 180 degrees, which can improve the flexibility of adjusting the processing angle of the piston pin body 17 and effectively improve the processing accuracy of the piston pin body 17.

[0029] The guide rod 6 moves through the interior of the connecting frame 7, and can guide and limit the movement of the two sets of connecting frames 7. The multiple heat dissipation slots 11 on the outside of the mounting shell 10 can dissipate the heat generated by the operation of the first motor 5, so as to avoid the internal temperature of the first motor 5 being too high. The magnetic plate 16 is used to magnetically attract the piston pin body 17, which can reduce the displacement of the piston pin body 17 during the rotation of the support block 14.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A piston pin hole drilling tool comprising a base plate (1), a screw rod (3) and a support block (14), characterized in that: One end of the lead screw (3) is connected to a first motor (5). Two sets of threads are opened on opposite sides of the lead screw (3). Two sets of connecting frames (7) are connected through threads on the outside of the lead screw (3). A compression ring (8) is provided at the top of the connecting frame (7). A limit block (9) is connected to one side of the compression ring (8). A second motor (12) is provided at the top of the base plate (1). A rotating shaft (13) is provided at the output end of the second motor (12), and the top end of the rotating shaft (13) is connected to the bottom end of the support block (14).

2. A piston pin bore tool as claimed in claim 1, wherein: The top of the base plate (1) is provided with a first mounting block (2), and one side of the first mounting block (2) is connected to one end of the first motor (5). The top of the base plate (1) is provided with a second mounting block (4), and the second mounting block (4) is located on one side of the first mounting block (2).

3. The piston drilling tooling according to claim 2, characterized in that: One side of the first mounting block (2) is connected to a guide rod (6), and the guide rod (6) is located behind the lead screw (3). The guide rod (6) moves through the interior of the connecting frame (7).

4. The piston drilling tooling according to claim 1, characterized in that: The top of the base plate (1) is provided with a mounting shell (10), and the mounting shell (10) is located outside the second motor (12). Multiple sets of heat dissipation grooves (11) are symmetrically opened through the outer side of the mounting shell (10).

5. A piston drilling tooling according to claim 1, characterized in that: The top of the support block (14) is an arc-shaped groove, and a slot (15) is provided on the top of the support block (14). A magnetic plate (16) is connected inside the slot (15).

6. A piston drilling tooling according to claim 5, characterized in that: The top of the support block (14) is movably connected to a piston pin body (17), and the piston pin body (17) is magnetically attracted to the magnetic plate (16).

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