Outer chamfer and elastic pin hole synchronous machining structure

Abstract

The utility model discloses a synchronous machining structure for an outer chamfer and an elastic pin hole, which is characterized in that a three-jaw chuck is arranged on a sliding block of a first linear guide rail, and an outer chamfer blade is fixed on a reciprocating driving mechanism; a control panel is rotationally connected to the first vertical plate, a control column is eccentrically fixed to the control panel, the control piece is connected with the first vertical plate through a shaft pin, a guide groove used for controlling the column to move is formed in the control piece, a first tooth part is arranged on the periphery of the control piece, a fixing block is fixed to the first vertical plate, and the first tooth part is connected with the first tooth part. The fixed block is provided with a channel for the moving rod to penetrate through, the moving rod is provided with a second tooth part meshed with the first tooth part, and the outer chamfering blade is fixed to the moving rod. The device is simple in structure, synchronous machining of the outer chamfer and the elastic pin hole of the piston pin can be achieved, machining procedures are reduced, and compared with a traditional mode that the elastic pin hole is formed firstly and then taken down to grind the outer chamfer, one-step machining is achieved, and working hours are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of piston pins, and particularly relates to a synchronous processing structure for external chamfers and elastic pin holes. Background Art

[0002] A piston pin is a cylindrical pin installed in the piston skirt. Its middle part passes through the small end hole of the connecting rod to connect the piston and the connecting rod. Its function is to transmit the gas force borne by the piston to the connecting rod, or to drive the piston to move together with the small end of the connecting rod. In order to reduce weight, piston pins are generally made of high-quality alloy steel and are made hollow. For the existing piston pin structure, elastic pin holes are provided, and elastic components are added in the elastic pin holes to increase the fastening degree between the piston rod and the connecting rod. However, for the processing of existing piston pins, external chamfers and elastic pin holes are processed step by step. During processing, it is necessary to load and unload materials, and then load and unload materials again, which is very cumbersome. Therefore, it is very important to obtain a synchronous processing structure for external chamfers and elastic pin holes. Content of the Utility Model

[0003] To solve at least one of the above technical problems, the utility model provides a synchronous processing structure for external chamfers and elastic pin holes, including a first linear guide rail. A three-jaw chuck is arranged on the slider of the first linear guide rail, and a clamping station for clamping the piston pin is arranged on the three-jaw chuck. The structure further includes a reciprocating driving mechanism, and an external chamfering blade is fixed on the reciprocating driving mechanism.

[0004] The movement direction of the reciprocating driving mechanism is arranged at an angle with the movement direction of the first linear guide rail.

[0005] The reciprocating driving mechanism includes a first vertical plate. A control disk is rotatably connected to the first vertical plate, and a control column is eccentrically fixed on the control disk. The structure further includes a control member pivotally connected to the first vertical plate. A guide groove for the movement of the control column is provided on the control member, and a first tooth portion is provided on the outer periphery of the control member. A fixed block is fixed on the first vertical plate, and a channel for a moving rod to pass through is provided on the fixed block. A second tooth portion meshing with the first tooth portion is provided on the moving rod, and the external chamfering blade is fixed on the moving rod.

[0006] A third linear guide rail is fixed on the three-jaw chuck, and a second rotating motor is fixed on the slider of the third linear guide rail. An elastic pin hole cutter is fixed on the output shaft of the second rotating motor.

[0007] The movement route of the third linear guide rail passes through the center of the three-jaw chuck.

[0008] Preferably, the movement direction of the reciprocating driving mechanism is perpendicular to the movement direction of the first linear guide rail.

[0009] Through the above technical solution, when the first linear guide moves, the axial distance of the outer chamfering blade acting on the surface of the piston pin can be controlled, and due to the setting of the reciprocating drive mechanism, the radial distance of the outer chamfering blade acting on the surface of the piston pin can be controlled. The outer chamfer is formed by dynamically adjusting the two positions.

[0010] A first driving motor is fixed to the back of the first vertical plate, and the output shaft of the first driving motor passes through the first vertical plate and is fixedly connected to the center of the control disk. A first rotating motor is fixed to the slider of the first linear guide, and a three-jaw chuck is fixed to the output shaft of the first rotating motor.

[0011] Among them, when the first driving motor is not in use, the chamfering blade can be controlled through the following structure: A mating control block is fixed to the front part of the slider of the first linear guide. A first inclined surface is provided on the mating control block, and a second inclined surface matching the first inclined surface is provided on the moving rod. There are also two side plates. The left and right sides of the moving rod are respectively connected to the inner walls of the two side plates by springs. When the control block moves towards the moving rod, due to the cooperation of the first inclined surface and the second inclined surface, the moving rod moves outwards to control the grinding distance of the outer chamfer.

[0012] When the present utility model is put into use, the piston pin to be drilled is fixed on the existing three-jaw chuck, and then the second rotating motor can be directly turned on to control the elastic pin hole cutter. The above first linear guide and second linear guide are electric guides, which can control the opening of the elastic pin hole of the piston pin. Subsequently, the first linear guide works, and then the outer chamfer of the piston pin is formed.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: The structure of the present utility model is simple, the outer chamfer and the elastic pin hole of the piston pin can be processed synchronously, the processing procedures are reduced. Compared with the traditional method of first opening the elastic pin hole and then removing it and grinding the outer chamfer, it can achieve the goal in one step and reduce the working hours. Description of the Drawings

[0014] Figure 1 It is a side view of the present utility model;

[0015] Figure 2 It is a front view of the reciprocating drive mechanism of the present utility model;

[0016] Figure 3 It is a top view of another embodiment of the present utility model Figure 1 ;

[0017] Figure 4 It is a top view of another embodiment of the present utility model Figure 2 ;

[0018] Figure 5It is the movement track of the external chamfering blade.

[0019] Reference numerals:

[0020] 11 First linear guide rail; 12 Three-jaw chuck; 13 First rotating motor;

[0021] 21 First vertical plate; 22 Second tooth part; 23 Control disk; 24 Control column; 25 Control part; 26 Axle pin; 27 Guide groove; 28 First tooth part; 29 Fixed block; 30 Channel; 31 External chamfering blade; 32 First driving motor; 33 Side plate;

[0022] 41 Third linear guide rail; 42 Second rotating motor;

[0023] 51 Workbench; 61 Matching control block;

[0024] 71 First inclined plane; 72 Second inclined plane; 73 Spring;

[0025] 8 Piston pin. Specific embodiments

[0026] In order to enable those skilled in the art to better understand the present invention and thus more clearly define the scope of protection required by the present invention, the present invention will be described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only some specific embodiments of the concept of the present invention and only a part of the embodiments of the present invention. The specific and direct descriptions of the relevant structures are only for the convenience of understanding the present invention, and each specific feature does not of course and directly limit the scope of implementation of the present invention.

[0027] Referring to the attached drawings, the present invention adopts the following technical solutions. An external chamfering and elastic pin hole synchronous processing structure includes a first linear guide rail 11. A three-jaw chuck 12 is provided on the slider of the first linear guide rail 11. A clamping station for clamping a piston pin is provided on the three-jaw chuck 12. A reciprocating driving mechanism is further included, and an external chamfering blade 31 is fixed on the reciprocating driving mechanism;

[0028] The movement direction of the reciprocating driving mechanism is set at an angle to the movement direction of the first linear guide rail 11;

[0029] The reciprocating drive mechanism includes a first vertical plate 21, a control disk 23 is rotatably connected to the first vertical plate 21, a control column 24 is eccentrically fixed to the control disk 23, and a control member 25 connected to the first vertical plate 21 by a pin 26 is further included. A guide groove 27 for the movement of the control column 24 is provided on the control member 25, a first tooth portion 28 is provided on the outer periphery of the control member 25, a fixed block 29 is fixed to the first vertical plate 21, a channel 30 for the movement rod to pass through is provided on the fixed block 29, a second tooth portion 22 meshing with the first tooth portion 28 is provided on the movement rod, and the external chamfering blade 31 is fixed to the movement rod;

[0030] A third linear guide 41 is fixed to the three-jaw chuck 12, a second rotary motor 42 is fixed to the slider of the third linear guide 41, and an elastic pin hole cutter is fixed to the output shaft of the second rotary motor 42; The movable position of the elastic pin hole is as Figure 5 shown, and the movement path is a dotted line.

[0031] The movement route of the third linear guide 41 passes through the center of the three-jaw chuck 12.

[0032] Preferably, the movement direction of the reciprocating drive mechanism is perpendicular to the movement direction of the first linear guide 11.

[0033] Through the above technical solution, when the first linear guide 11 moves, the axial distance of the external chamfering blade 31 acting on the surface of the piston pin can be controlled, and due to the setting of the reciprocating drive mechanism, the radial distance of the external chamfering blade 31 acting on the surface of the piston pin can be controlled, and the external chamfer is formed by dynamically adjusting the two positions.

[0034] A first drive motor 32 is fixed to the back of the first vertical plate 21, and the output shaft of the first drive motor 32 passes through the first vertical plate 21 and is fixedly connected to the center of the control disk 23. A first rotary motor 13 is fixed to the slider of the first linear guide 11, and a three-jaw chuck 12 is fixed to the output shaft of the first rotary motor 13

[0035] Among them, when the first drive motor 32 is not used, the control of the chamfering blade can be carried out through the following structure: A cooperation control block 61 is fixed to the front part of the slider of the first linear guide 11, a first inclined surface 71 is provided on the cooperation control block 61, a second inclined surface 72 cooperating with the first inclined surface 71 is provided on the movement rod, and two side plates 33 are further included. The left and right sides of the movement rod are respectively connected to the inner walls of the two side plates 33 by springs 73. When the control block moves towards the movement rod, due to the cooperation of the first inclined surface 71 and the second inclined surface 72, the movement rod moves outwards to control the grinding distance of the external chamfer.

[0036] It further includes a workbench 51, and the first linear guide rail 11, the first vertical plate 21 and the side plate 33 are fixed on the workbench 51.

[0037] When the present utility model is put into use, the piston pin to be drilled is placed on the existing three-jaw chuck 12 for fixation. Subsequently, the second rotary motor 42 can be directly turned on to control the elastic pin hole cutter. The above-mentioned first linear guide rail 11 and the second linear guide rail are electric guide rails, which can control the opening of the elastic pin hole for the piston pin. Subsequently, the first linear guide rail 11 works, thereby realizing the opening of the external chamfer of the piston pin.

[0038] Compared with the prior art, the advantages of the present utility model are as follows: The structure of the present utility model is simple, and it can realize the synchronous processing of the external chamfer and the elastic pin hole of the piston pin, reducing the processing procedures. Compared with the traditional method of first opening the elastic pin hole and then removing it to grind the external chamfer, it can achieve the goal in one step and reduce the working hours.

[0039] In the description of the present utility model, the terms indicating directions or position relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or position relationships shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of the present utility model.

Claims

1. A structure for synchronously processing an external chamfer and an elastic pin hole, characterized in that: It comprises a first linear guide rail (11), a slider of the first linear guide rail (11) is provided with a three-jaw chuck (12), the three-jaw chuck (12) is provided with a clamping station for clamping a piston pin, and also comprises a reciprocating drive mechanism, an external chamfering blade (31) is fixed on the reciprocating drive mechanism; The movement direction of the reciprocating drive mechanism is arranged at an angle to the movement direction of the first linear guide rail (11); The reciprocating drive mechanism comprises a first vertical plate (21), a control disk (23) is rotatably connected to the first vertical plate (21), a control column (24) is eccentrically fixed to the control disk (23), and also comprises a control member (25) connected to the shaft pin (26) of the first vertical plate (21), a guide groove (27) for moving the control column (24) is provided on the control member (25), a first tooth portion (28) is provided on the outer periphery of the control member (25), a fixing block (29) is fixed to the first vertical plate (21), a channel (30) for a moving rod to pass through is provided on the fixing block (29), a second tooth portion (22) meshing with the first tooth portion (28) is provided on the moving rod, and the external chamfering blade (31) is fixed to the moving rod; A third linear guide rail (41) is fixed on the three-jaw chuck (12), a second rotary motor (42) is fixed on a slider of the third linear guide rail (41), and an elastic pin hole cutter is fixed on an output shaft of the second rotary motor (42); The movement path of the third linear guide rail (41) passes through the center of the three-jaw chuck (12).

2. The structure for synchronously processing external chamfers and elastic pin holes according to claim 1, characterized in that: The movement direction of the reciprocating drive mechanism is perpendicular to the movement direction of the first linear guide rail (11).

3. The structure for synchronously processing external chamfers and elastic pin holes according to claim 1, characterized in that: A first drive motor (32) is fixed to the back of the first vertical plate (21), and an output shaft of the first drive motor (32) passes through the first vertical plate (21) and is fixedly connected to the center of the control disk (23).

4. The structure for synchronously processing external chamfers and elastic pin holes according to claim 1, characterized in that: A first rotating motor (13) is fixed on the slider of the first linear guide rail (11), and a three-jaw chuck (12) is fixed on the output shaft of the first rotating motor (13).

5. The structure for synchronously processing external chamfers and elastic pin holes according to claim 1, characterized in that: A matching control block (61) is fixed to the front of the slider of the first linear guide rail (11), and a first inclined surface (71) is provided on the matching control block (61). A second inclined surface (72) matching with the first inclined surface (71) is provided on the moving rod. The moving rod also includes two side plates (33). The left and right sides of the moving rod are connected to the inner walls of the two side plates (33) by springs (73) respectively, so that when the control block moves toward the moving rod, the first inclined surface (71) and the second inclined surface (72) match, so that the moving rod moves outward to control the grinding distance of the outer chamfer.

Images