Precise machining jig for inner pin hole of piston

Abstract

The utility model discloses a precise machining jig for an inner pin hole of a piston, and relates to the technical field of machining of the inner pin hole of the piston. The drilling unit is arranged on the upper surface of the workbench and used for machining; the limiting unit is arranged on the upper surface of the workbench and used for clamping, and the drilling unit comprises an adjusting assembly arranged on the upper surface of the workbench and a drilling assembly arranged on the outer surface of the adjusting assembly. Through cooperation of the supporting plate, the weighing plate, the hydraulic cylinder, the telescopic limiting rod, the mounting support, the first driving motor and the drill bit, the interior of a piston can be conveniently tapped, and therefore the piston can be machined more conveniently and safely; through cooperation of the mounting plate, the limiting groove body, a second driving motor, a graduated scale, a moving block, a collecting box, a mold containing table, a discharging baffle, an expanding plate, an L-shaped mounting plate, a pneumatic air cylinder and a protective cover, the piston can be conveniently clamped and fixed, and therefore the piston can be conveniently machined.

Description

Technical Field

[0001] The utility model relates to the technical field of piston inner pin hole processing, in particular to a piston inner pin hole precision processing jig. Background Art

[0002] The piston is a reciprocating component in the cylinder block of a car engine. The basic structure of the piston can be divided into the top, head and skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the selected combustion chamber type. Gasoline engines mostly use flat-top pistons, and usually holes need to be opened inside the piston during processing.

[0003] In the prior art, a patent document with a publication number of CN220347479U proposes a piston processing jig, including a jig mechanism, and also including: a cutting mechanism, the cutting mechanism is fixed at the upper part of the inside of the jig mechanism; an adjusting mechanism, the adjusting mechanism is fixed at both sides of the inside of the jig mechanism; a conveying mechanism, the conveying mechanism is fixed at the lower part of the inside of the jig mechanism; a fixed frame, the fixed frame is the outer shell of the jig mechanism, the cutting mechanism, the adjusting mechanism and the conveying mechanism are all fixedly connected to the fixed frame, and the position of the clamping limit block can be adjusted by extending the first electric push rod, so as to adapt to clamping piston rings of different sizes. The clamped piston ring is located directly below the laser cutting module. The laser cutting module is set to cut the piston conveyed directly below the limit frame, so as to achieve precise processing of the piston.

[0004] In order to solve the problem that the existing jigs generally process piston rings by stamping, but the stamping method is prone to cracking of some materials, the existing technology uses laser drilling to process it. However, due to the large thickness of the piston, the energy consumption when using laser drilling is large, and the effect of laser drilling is poor, which reduces the practicality of the piston processing jig. Utility Model Content

[0005] The purpose of the utility model is to provide a precision machining jig for a piston inner pin hole to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A precision machining jig for piston inner pin holes comprises a workbench; a drilling unit arranged on the upper surface of the workbench for machining; and a limit unit arranged on the upper surface of the workbench for clamping, wherein the drilling unit comprises an adjusting component arranged on the upper surface of the workbench and a drilling component arranged on the outer surface of the adjusting component, and the limit unit comprises a clamping component arranged on the upper surface of the workbench and a protective component arranged on the outer surface of the clamping component.

[0008] A further improvement of the technical solution of the utility model is that: the adjustment component includes a support plate, the bottom surface of the support plate is fixedly connected to the upper surface of the workbench, and the outer surface of the support plate is fixedly connected to a weighing plate.

[0009] A further improvement of the technical solution of the utility model is that: the upper surface of the weighing plate is detachably connected to a hydraulic cylinder, the upper surface of the weighing plate is detachably connected to a telescopic limit rod, and the telescopic ends of the hydraulic cylinder and the telescopic limit rod are detachably connected to a mounting bracket.

[0010] By adopting the above technical solution, the height of the mounting bracket can be conveniently adjusted by using the cooperation of the support plate, the weighing plate, the hydraulic cylinder, the telescopic limit rod and the mounting bracket.

[0011] A further improvement of the technical solution of the utility model is that the drilling assembly includes a driving motor 1, the bottom surface of the driving motor 1 is detachably connected to the upper surface of the mounting bracket, and the driving end of the driving motor 1 is detachably connected to a drill bit.

[0012] By adopting the above technical solution, the cooperation between the driving motor 1 and the drill bit can facilitate the drilling of the interior of the piston and the replacement of the drill bit.

[0013] A further improvement of the technical solution of the utility model is that: the clamping assembly includes a mounting plate, the bottom surface of the mounting plate is detachably connected to the upper surface of the workbench, the upper surface of the mounting plate is detachably connected to a limiting groove body, one side of the limiting groove body is detachably connected to a second driving motor, the driving end of the second driving motor is fixedly connected to a screw rod rotatably connected to the inner wall of the limiting groove body, a scale is provided on the upper surface of the limiting groove body, the outer surface of the screw rod is threadedly connected to a moving block slidably connected to the inner wall of the limiting groove body, the outer surface of the moving block is fixedly connected to a discharge baffle, and the inner wall of the discharge baffle is detachably connected to an expansion plate.

[0014] By adopting the above technical solution, the spacing of the moving blocks can be conveniently adjusted by the cooperation of the mounting plate, the limiting groove body, the screw rod, the scale and the moving block.

[0015] A further improvement of the technical solution of the utility model is that: a collecting box is fixedly connected to the upper surface of the mounting plate, and a mold placing table is detachably connected to the outer surface of the moving block.

[0016] By adopting the above technical solution, the piston can be conveniently fixed by using the mold placement tables on both sides, wherein a through groove is provided at the center of the placement table.

[0017] A further improvement of the technical solution of the utility model is that the protective component includes an L-shaped mounting plate, one side of the L-shaped mounting plate is fixedly connected to the outer surface of the moving block, one side of the L-shaped mounting plate is detachably connected to a pneumatic cylinder, and one side of the pneumatic cylinder is detachably connected to a protective cover.

[0018] By adopting the above technical solution, the cooperation among the L-shaped mounting plate, the pneumatic cylinder and the protective cover can conveniently protect the piston during processing.

[0019] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0020] 1. The utility model provides a precision processing jig for the inner pin hole of a piston, which can facilitate the drilling of holes inside the piston by using a support plate, a weighing plate, a hydraulic cylinder, a telescopic limit rod, a mounting bracket, a drive motor and a drill bit, thereby making the processing of the piston more convenient and safer.

[0021] 2. The utility model provides a precision processing jig for the inner pin hole of a piston, which adopts a mounting plate, a limit slot, a second drive motor, a ruler, a moving block, a collection box, a mold placement table, a discharge baffle, an expansion plate, an L-shaped mounting plate, a pneumatic cylinder and a protective cover, which cooperate with each other to conveniently clamp and fix the piston, thereby facilitating the processing of the piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a front structural schematic diagram of the utility model;

[0024] Figure 3 This is a schematic diagram of the drilling unit structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the limit unit of the utility model;

[0026] Figure 5 It is a schematic diagram of the local structure of the limiting unit of the utility model.

[0027] In the figure: 1. workbench; 2. drilling unit; 21. support plate; 22. weighing plate; 23. hydraulic cylinder; 24. telescopic limit rod; 25. mounting bracket; 26. drive motor 1; 27. drill bit; 3. limit unit; 31. mounting plate; 32. limit slot; 33. drive motor 2; 34. scale; 35. moving block; 36. collecting box; 37. mold placement table; 38. discharge baffle; 39. expansion plate; 310. L-shaped mounting plate; 311. pneumatic cylinder; 312. protective cover. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments:

[0029] Example 1

[0030] like Figure 1-5 As shown, the utility model provides a precision machining jig for inner pin holes of pistons, comprising a workbench 1; a drilling unit 2 arranged on the upper surface of the workbench 1 for machining; and a limiting unit 3 arranged on the upper surface of the workbench 1 for clamping, the drilling unit 2 comprises an adjusting component arranged on the upper surface of the workbench 1 and a drilling component arranged on the outer surface of the adjusting component, the limiting unit 3 comprises a clamping component arranged on the upper surface of the workbench 1 and a protective component arranged on the outer surface of the clamping component, the adjusting component comprises a supporting plate 21, the bottom surface of the supporting plate 21 is fixedly connected to the upper surface of the workbench 1, the outer surface of the supporting plate 21 is fixedly connected to a weighing plate 22, the upper surface of the weighing plate 22 is detachably connected to a hydraulic cylinder 23, the upper surface of the weighing plate 22 is detachably connected to a telescopic limiting rod 24, and the telescopic ends of the hydraulic cylinder 23 and the telescopic limiting rod 24 are both detachable. A mounting bracket 25 is connected, and the drilling assembly includes a driving motor 26. The bottom surface of the driving motor 26 is detachably connected to the upper surface of the mounting bracket 25, and the driving end of the driving motor 26 is detachably connected to a drill bit 27. When using the precision processing jig for the pin hole in the piston, the piston is first placed inside the limit unit 3 for fixation. After the fixation is completed, the hydraulic cylinder 23 is started, and the telescopic end of the hydraulic cylinder 23 drives the mounting bracket 25 to rise and fall under the limit of the telescopic limit rod 24, so as to facilitate the adjustment of the height of the driving motor 26. While adjusting, the driving motor 26 is started, and the driving end of the driving motor 26 drives the drill bit 27 to rotate, so as to facilitate drilling inside the piston. During the processing of the piston, drill bits 27 of different specifications can be replaced according to needs, thereby increasing the functionality of the precision processing jig for the pin hole in the piston.

[0031] Example 2

[0032] like Figure 1-5As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, the clamping assembly includes a mounting plate 31, the bottom surface of the mounting plate 31 is detachably connected to the upper surface of the workbench 1, the upper surface of the mounting plate 31 is detachably connected to a limiting groove body 32, one side of the limiting groove body 32 is detachably connected to a driving motor 2 33, the driving end of the driving motor 2 33 is fixedly connected to a screw rod rotatably connected to the inner wall of the limiting groove body 32, a scale 34 is provided on the upper surface of the limiting groove body 32, the outer surface of the screw rod is threadedly connected to a moving block 35 slidably connected to the inner wall of the limiting groove body 32, the outer surface of the moving block 35 is fixedly connected to a discharge baffle 38, the inner wall of the discharge baffle 38 is detachably connected to an expansion plate 39, the upper surface of the mounting plate 31 is fixedly connected to a collecting box 36, the outer surface of the moving block 35 is detachably connected to a mold placement table 37, and the protective assembly includes an L-shaped mounting plate 310, one side of the L-shaped mounting plate 310 is connected to the moving The outer surface of the block 35 is fixedly connected, and a pneumatic cylinder 311 is detachably connected to one side of the L-shaped mounting plate 310, and a protective cover 312 is detachably connected to one side of the pneumatic cylinder 311. Before using the piston inner pin hole precision processing jig, a mold placement table 37 adapted to the piston size is installed on the outer surface of the movable block 35 as needed, and then the drive motor 2 33 is started, and the drive end of the drive motor 2 33 drives the screw rod to rotate, thereby driving the movable block 35 to move under the limit of the limit groove 32, and then adjusting the spacing between the mold placement tables 37. After the adjustment is completed, the piston accessories are placed inside the mold placement table 37, and the pneumatic cylinder 311 is started to drive the protective cover 312 to move closer to each other, to assist in shielding the top of the piston, thereby preventing metal debris from splashing during the drilling process, and the processed metal debris will fall to the outer surface of the discharge baffle 38 and the expansion plate 39, and finally due to its own gravity, it will be collected inside the collection box 36 for collection.

[0033] The following is a detailed description of the working principle of the precision machining jig for the piston inner pin hole.

[0034] like Figure 1-5As shown, when using the precision machining jig for the inner pin hole of the piston, first place the piston inside the limit unit 3 for fixing, install the mold placement table 37 that matches the size of the piston as needed, and install it on the outer surface of the moving block 35, then start the drive motor 2 33, and the drive end of the drive motor 2 33 drives the screw rod to rotate, thereby driving the moving block 35 to move under the limit of the limit groove 32, and then adjust the spacing between the mold placement tables 37. After the adjustment is completed, place the piston accessories inside the mold placement table 37, and start the pneumatic cylinder 311 to drive the protective cover 312 to move closer to each other, so as to assist in shielding the top of the piston, thereby preventing metal debris from splashing during the drilling process. After the setting is completed, by starting the hydraulic cylinder 23, the telescopic end of the hydraulic cylinder 23 drives the mounting bracket 25 to rise and fall under the limit of the telescopic limit rod 24, so as to facilitate the adjustment of the height of the driving motor 26. While adjusting, by starting the driving motor 26, the driving end of the driving motor 26 drives the drill bit 27 to rotate, so as to facilitate drilling the inside of the piston. During the processing of the piston, drill bits 27 of different specifications can be replaced according to needs, thereby increasing the functionality of the precise processing jig for the pin hole inside the piston, and the processed metal debris will fall onto the outer surface of the discharge baffle 38 and the expansion plate 39, and finally due to the effect of its own gravity, it will be collected in the collection box 36 for collection.

[0035] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A precision machining jig for a piston inner pin hole, comprising a workbench (1); A drilling unit (2) for processing arranged on the upper surface of the workbench (1); and a limiting unit (3) for clamping arranged on the upper surface of the workbench (1), characterized in that: The drilling unit (2) comprises an adjustment component arranged on the upper surface of the workbench (1) and a drilling component arranged on the outer surface of the adjustment component, and the limiting unit (3) comprises a clamping component arranged on the upper surface of the workbench (1) and a protective component arranged on the outer surface of the clamping component.

2. A precision machining jig for inner pin holes of pistons according to claim 1, characterized in that: The adjustment assembly comprises a support plate (21), the bottom surface of the support plate (21) is fixedly connected to the upper surface of the workbench (1), and the outer surface of the support plate (21) is fixedly connected to a weighing plate (22).

3. A precision machining jig for inner pin holes of pistons according to claim 2, characterized in that: The upper surface of the weighing plate (22) is detachably connected to a hydraulic cylinder (23), the upper surface of the weighing plate (22) is detachably connected to a telescopic limit rod (24), and the telescopic ends of the hydraulic cylinder (23) and the telescopic limit rod (24) are detachably connected to a mounting bracket (25).

4. A precision machining jig for inner pin holes of pistons according to claim 3, characterized in that: The drilling assembly comprises a driving motor 1 (26), the bottom surface of the driving motor 1 (26) is detachably connected to the upper surface of the mounting bracket (25), and the driving end of the driving motor 1 (26) is detachably connected to a drill bit (27).

5. The precision machining jig for inner pin hole of piston according to claim 1, characterized in that: The clamping assembly comprises a mounting plate (31), the bottom surface of the mounting plate (31) is detachably connected to the upper surface of the workbench (1), the upper surface of the mounting plate (31) is detachably connected to a limiting groove body (32), one side of the limiting groove body (32) is detachably connected to a second drive motor (33), the driving end of the second drive motor (33) is fixedly connected to a screw rod rotatably connected to the inner wall of the limiting groove body (32), a scale (34) is provided on the upper surface of the limiting groove body (32), the outer surface of the screw rod is threadedly connected to a moving block (35) slidably connected to the inner wall of the limiting groove body (32), the outer surface of the moving block (35) is fixedly connected to a discharge baffle (38), and the inner wall of the discharge baffle (38) is detachably connected to an expansion plate (39).

6. A precision machining jig for inner pin holes of pistons according to claim 5, characterized in that: The upper surface of the mounting plate (31) is fixedly connected to a collecting box (36), and the outer surface of the moving block (35) is detachably connected to a mold placement table (37).

7. A precision machining jig for inner pin holes of pistons according to claim 6, characterized in that: The protective assembly comprises an L-shaped mounting plate (310), one side of the L-shaped mounting plate (310) is fixedly connected to the outer surface of the moving block (35), one side of the L-shaped mounting plate (310) is detachably connected to a pneumatic cylinder (311), and one side of the pneumatic cylinder (311) is detachably connected to a protective cover (312).

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