Piston pin slotting device

Abstract

The utility model provides piston pin cutting device belongs to mechanical processing technical field, including shell mechanism, is formed by fixed frame and the closed work tank of installing on fixed frame, encapsulation mechanism, is fixed in the top of work tank, including with the fixed plate of work tank top surface fixed connection, be equipped with the first linear guide rail and the second linear guide rail of bridging between two first linear guide rail of paired arrangement on the fixed plate. The utility model discloses a rotating cutter and cross slide structure's encapsulation mechanism driven by servo motor are provided, and the accurate control of cutting process is realized. Servo motor can provide stable speed output, and the axial movement of cooperation cylinder push can accurately control the cutting depth and feed amount, and cross slide structure guarantees the flexible and accurate displacement of cutter in horizontal direction, effectively solves the problem that the two side notches coaxiality error is big, and the groove width consistency is poor caused by traditional manual tool setting and manual feeding.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a piston pin grooving device. Background Technology

[0002] Piston pin is a core component in internal combustion engines that connects the piston and connecting rod. Its outer surface usually needs to be machined with an annular groove to install a retaining ring to limit the axial movement of the piston pin. Therefore, the machining quality of the groove is directly related to the reliability of engine operation. In existing technologies, piston pin grooving is mostly completed using traditional lathes or general-purpose milling machines with special fixtures. However, this type of machining requires manual clamping, positioning, and handling of the workpiece during the process. This is not only labor-intensive, but the instability of manual operation can also lead to difficulties in ensuring the positional and dimensional accuracy of the groove, especially for mass-produced piston pins, which can easily result in significant quality fluctuations. At the same time, the cutting and clamping mechanisms of traditional equipment are relatively independent, making adjustments cumbersome and hindering efficient automated production. This results in low machining efficiency and cannot meet the capacity requirements of modern manufacturing.

[0003] Therefore, this application provides a piston pin grooving device to meet the requirements. Utility Model Content

[0004] The purpose of this invention is to solve the problems of insufficient precision, low efficiency, poor operational safety and low degree of automation in the existing piston pin grooving process, and to propose a piston pin grooving device.

[0005] The technical problem to be solved by this utility model is to provide a piston pin grooving device to solve the problems of existing piston pin grooving devices.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: The piston pin grooving device includes a housing mechanism, which consists of a fixed frame and an enclosed working box mounted on the fixed frame; The packaging mechanism is fixed to the top of the work box and includes a fixing plate fixed to the top surface of the work box. The fixing plate is provided with a pair of first linear guide rails and a second linear guide rail bridging the two first linear guide rails. The machining execution unit includes a rotary cutter fixed in the middle of a fixed plate, a servo motor that drives the rotary cutter, and a cylinder that pushes the servo motor to move axially.

[0007] Preferably, the rotary cutter is symmetrically provided with clamping mechanisms on both sides, and each clamping mechanism includes: a portal frame fixed vertically on the fixed plate; a guide post passing through the portal frame; a slider sleeved on the guide post; and an oblique connecting rod connecting the slider and the clamping body.

[0008] Preferably, the clamp is a hollow rectangular box, which contains: an optical axis that runs horizontally through the box; a floating gripper sleeved on the optical axis; and a compression spring located between the floating gripper and the inner wall of the box.

[0009] Preferably, the track direction of the first linear guide is perpendicular to the track direction of the second linear guide, forming a cross slide structure.

[0010] Preferably, the side wall of the work box is provided with an openable and closable observation window, and the bottom is provided with a chip collection drawer.

[0011] Preferably, the two ends of the oblique connecting rod are connected to the slider and the clamping body respectively via universal joints.

[0012] Preferably, the working surface of the floating gripper is provided with a V-shaped positioning groove, and the surface of the V-shaped positioning groove is embedded with an anti-slip rubber pad.

[0013] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, precise control of the cutting process is achieved by setting up a rotary cutter driven by a servo motor and an encapsulation mechanism with a cross slide structure. The servo motor can provide stable speed output, and together with the axial movement driven by the cylinder, it can accurately control the cutting depth and feed rate; the cross slide structure ensures flexible and precise displacement of the cutter in the horizontal direction, effectively solving the problems of large coaxiality error and poor groove width consistency on both sides of the groove caused by traditional manual tool setting and manual feed, so that the grooving accuracy can meet the assembly requirements of high-precision engines. Attached Figure Description

[0014] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the outer shell mechanism in this utility model; Figure 3 This is a schematic diagram of the packaging mechanism in this utility model; Figure 4 This is a schematic diagram of the clamping mechanism in this utility model.

[0016] [Figure Labels] 1. Outer shell mechanism; 101. Fixing frame; 102. Working box; 103. Observation window; 104. Chip collection drawer; 2. Packaging mechanism; 201. Fixing plate; 202. First linear guide rail; 203. Second linear guide rail; 205. Rotary cutter; 206. Servo motor; 207. Cylinder; 3. Clamping mechanism; 301. Portal bracket; 302. Guide post; 303. Slider; 304. Angled connecting rod; 305. Clamping body; 306. Optical axis; 307. Floating gripper; 308. Compression spring; 309. V-shaped positioning groove; 310. Anti-slip rubber pad.

[0017] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0018] 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.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] like Figure 1 and Figure 2 The piston pin grooving device shown in the embodiment of this utility model includes a housing mechanism 1, which consists of a fixed frame 101 and a closed working box 102 mounted on the fixed frame 101. The side wall of the working box 102 is provided with an openable and closable observation window 103, and the bottom is provided with a chip collection drawer 104.

[0021] Specifically, the fixed frame 101 provides a stable installation foundation for the entire device, ensuring that the various mechanisms will not shake or shift due to cutting forces or other factors during the processing. The enclosed work box 102 can firmly lock the metal chips generated during the cutting process inside the box, preventing the chips from splashing into the working environment. This not only ensures the personal safety of the operators but also avoids the chips from contaminating or damaging the surrounding equipment. The openable observation window 103 allows the operators to clearly observe the internal processing situation without opening the box. The chip collection drawer 104 can collect the chips generated during cutting.

[0022] In this embodiment, as Figure 3 As shown; the packaging mechanism 2 is fixed to the top of the work box 102 and includes a fixing plate 201 fixed to the top surface of the work box 102. The fixing plate 201 is provided with a pair of first linear guide rails 202 and a second linear guide rail 203 bridging the two first linear guide rails 202. The machining execution unit includes a rotary cutter 205 fixed in the middle of the fixed plate 201, a servo motor 206 that drives the rotary cutter 205, and a cylinder 207 that pushes the servo motor 206 to move axially. The track direction of the first linear guide 202 is perpendicular to the track direction of the second linear guide 203, forming a cross slide structure.

[0023] Specifically, the cross slide structure formed by the first linear guide 202 and the bridging second linear guide 203 greatly improves the motion flexibility and positioning accuracy of the machining execution unit. The cross slide structure can achieve smooth movement of the machining execution unit in the X and Y directions on the horizontal plane through precise guide rail guidance. With the drive of the servo motor 206, the positioning error can be controlled within a very small range, effectively solving the problems of low groove position accuracy and poor consistency in traditional machining. The rotary cutter 205, driven by the servo motor 206, can ensure the uniformity of the cutting process and reduce the problem of groove surface roughness exceeding tolerance due to speed fluctuations. The axial movement achieved by the cylinder 207 driving the servo motor 206 can accurately control the cutting depth, replacing the traditional manual feeding method, which not only reduces the intensity of manual labor.

[0024] In this embodiment, as Figure 4As shown; the rotary cutter 205 is symmetrically provided with clamping mechanisms 3 on both sides. Each clamping mechanism 3 includes: a portal frame 301 vertically fixed on the fixed plate 201; a guide post 302 passing through the portal frame 301; a slider 303 sleeved on the guide post 302; and an oblique connecting rod 304 connecting the slider 303 and the clamping body 305. The clamping body 305 is a hollow rectangular box with: a horizontally penetrating optical axis 306 inside; a floating gripper 307 sleeved on the optical axis 306; and a compression spring 308 located between the floating gripper 307 and the inner wall of the box. The two ends of the oblique connecting rod 304 are connected to the slider 303 and the clamping body 305 respectively through universal joints. The working surface of the floating gripper 307 is provided with a V-shaped positioning groove 309, and the surface of the V-shaped positioning groove 309 is embedded with an anti-slip rubber pad 310.

[0025] Specifically, the clamping mechanism 3 provides a stable foundation through the portal frame 301, while the guide post 302 and slider 303 ensure smooth and precise clamping action. The slider 303 drives the clamping body 305 to quickly complete clamping via the inclined connecting rod 304, improving efficiency. The optical axis inside the clamping body 305 cooperates with the floating jaw 307, and the compression spring 308 achieves self-adaptive clamping, avoiding damage to the workpiece. The symmetrical layout ensures the coaxiality of the piston pin, the V-shaped positioning groove 309 automatically centers, and the anti-slip rubber pad 310 enhances stability and prevents scratches. The angle of the inclined connecting rod 304 and the universal joint design reduce stress concentration, ensure stable transmission of clamping force, and improve overall machining accuracy and reliability.

[0026] Working principle: During operation, the piston pin is first placed in the V-shaped positioning groove 309 of the clamping mechanism 3. The slider 303 moves along the guide post 302, and the clamping body 305 closes through the inclined connecting rod 304. The floating jaw 307 adaptively clamps the workpiece under the action of the compression spring 308, and the anti-slip rubber pad 310 prevents slippage. Subsequently, the servo motor 206 drives the rotary cutter 205 to start, and the cylinder 207 pushes it to move axially. With the help of the cross slide structure to adjust the position, the piston pin is grooved. During processing, the enclosed work box 102 prevents debris from splashing, and the observation window 103 can monitor in real time. After completion, the clamping mechanism 3 is released, the workpiece is taken out, and the chip collection drawer 104 collects the debris. The whole process realizes automated continuous operation.

[0027] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A piston pin grooving device, characterized in that, include: The outer casing mechanism (1) consists of a fixed frame (101) and a closed working box (102) mounted on the fixed frame (101); The packaging mechanism (2) is fixed to the top of the work box (102) and includes a fixing plate (201) fixed to the top surface of the work box (102). The fixing plate (201) is provided with a pair of first linear guide rails (202) and a second linear guide rail (203) spanning between the two first linear guide rails (202). The machining execution unit includes a rotary cutter (205) fixed in the middle of a fixed plate (201), a servo motor (206) that drives the rotary cutter (205), and a cylinder (207) that pushes the servo motor (206) to move axially.

2. The piston pin grooving device according to claim 1, characterized in that: The rotary cutter (205) is symmetrically provided with clamping mechanisms (3) on both sides. Each clamping mechanism (3) includes: a portal frame (301) vertically fixed on the fixed plate (201); a guide post (302) passing through the portal frame (301); a slider (303) sleeved on the guide post (302); and an oblique connecting rod (304) connecting the slider (303) and the clamping body (305).

3. The piston pin grooving device according to claim 2, characterized in that: The clamping body (305) is a hollow rectangular box, which is provided with: a horizontal optical axis (306) that runs through the box; a floating gripper (307) sleeved on the optical axis (306); and a compression spring (308) located between the floating gripper (307) and the inner wall of the box.

4. The piston pin grooving device according to claim 1, characterized in that: The track direction of the first linear guide (202) is perpendicular to the track direction of the second linear guide (203), forming a cross slide structure.

5. The piston pin grooving device according to claim 1, characterized in that: The work box (102) has an openable and closable observation window (103) on its side wall and a chip collection drawer (104) at its bottom.

6. The piston pin grooving device according to claim 2, characterized in that: The two ends of the oblique connecting rod (304) are connected to the slider (303) and the clamping body (305) respectively through universal joints.

7. The piston pin grooving device according to claim 3, characterized in that: The working surface of the floating gripper (307) is provided with a V-shaped positioning groove (309), and the surface of the V-shaped positioning groove (309) is embedded with an anti-slip rubber pad (310).

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