Piston pin hole and chamfer synchronous forming device

Abstract

The utility model discloses a piston pin hole and chamfer synchronous forming device which comprises a chamfering mechanism, a drilling mechanism, a shifting mechanism and a clamp mechanism, in the scheme, a piston pin is pre-arranged through a carrier block, a first clamping block and a second clamping block which are elastically connected are matched to clamp the piston pin to be pre-fixed, after the shifting mechanism moves to a preset position, a pressing block is moved downwards through a telescopic mechanism, and the piston pin hole is formed. The V-shaped groove of the pressing block abuts against the two clamping blocks, the two clamping blocks synchronously move in the opposite directions to secondarily clamp the piston pin, then the chamfering mechanism and the drilling mechanism act, the pressing and fixing mechanism and the shifting mechanism are independent, a mechanism needing to be electrically connected is not arranged at the moving end of the shifting mechanism, and layout, assembly and the like are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of processing devices, in particular to a synchronous forming device for a piston pin hole and a chamfer. Background Art

[0002] The processing of piston pins involves the forming of pin holes and chamfers, and the common processing method is to place the chamfering mechanism and drilling mechanism independently in different processes, and move the piston pin to the chamfering mechanism for secondary processing after the drilling is completed, which is inefficient. In response to this, some companies on the market place the chamfering mechanism and drilling mechanism in the same process, and use a shifting mechanism to move the piston pin to be processed through the drilling mechanism and chamfering mechanism in turn. Two telescopic mechanisms need to be placed relatively at the moving end of the shifting mechanism to move the clamping block toward or away from each other. The telescopic mechanism is in a moving state, and it is inconvenient to connect the electrical connection with the outside world, which needs to be improved. Utility Model Content

[0003] In order to solve at least one of the above technical defects, the utility model provides the following technical solutions:

[0004] The present application document discloses a synchronous forming device for a piston pin hole and chamfering, comprising a chamfering mechanism, a drilling mechanism, a shifting mechanism and a clamping mechanism, wherein the clamping mechanism is arranged at the moving end of the shifting mechanism, and the chamfering mechanism and the drilling mechanism are arranged at the side of the moving path of the clamping mechanism, the clamping mechanism comprises a clamping block 1, a clamping block 2 and a carrier block, a groove is arranged at the top surface of the carrier block and the two sides of the carrier block are elastically connected to the clamping block 1 and the clamping block 2 respectively, a pressing mechanism is arranged on one side of the chamfering mechanism and the drilling mechanism, the pressing mechanism comprises a bracket, a telescopic mechanism and a pressure block, a V-shaped groove is arranged on the bottom surface of the pressure block, a telescopic mechanism is arranged on the bracket above the moving path of the clamping mechanism, a pressure block is arranged at the moving end of the telescopic mechanism, and the pressure block is moved downward by the telescopic mechanism after the clamping mechanism moves to a predetermined position, and the V-shaped groove of the pressure block abuts against the clamping block 1 and the clamping block 2 so that the clamping block 1 and the clamping block 2 clamp the piston pin at the groove synchronously.

[0005] In this solution, the piston pin is pre-placed through the carrier block, and the piston pin is clamped and pre-fixed by the elastically connected clamping block 1 and clamping block 2. After the shifting mechanism moves to the predetermined position, the pressing block is moved downward by the telescopic mechanism, and the two clamping blocks are abutted by the V-groove of the pressing block. The two clamping blocks are synchronously moved toward each other to clamp the piston pin for a second time, and then the chamfering mechanism and the drilling mechanism are used for action. The pressing mechanism is independent of the shifting mechanism, and there is no mechanism that requires electrical connection on the moving end of the shifting mechanism, which is convenient for layout and assembly.

[0006] Furthermore, the shifting mechanism is a screw nut seat type, and fixed plates are relatively arranged on the nut seat, a carrier block is arranged between the two fixed plates, and clamping block 1 and clamping block 2 are correspondingly arranged between the fixed plate and the carrier block, and elastic parts are arranged between clamping block 1, clamping block 2 and adjacent fixed plates. In this scheme, fixed blocks are added to facilitate the connection of elastic parts.

[0007] Furthermore, a guide cylinder is arranged on the fixed plate, a guide rod is arranged on the corresponding clamping block, an elastic member is sleeved on the guide rod, and both ends of the elastic member respectively abut against the guide cylinder and the corresponding clamping block. The guide cylinder and the guide rod cooperate to improve the stability of the movement of the clamping block and facilitate the placement of the elastic member.

[0008] Furthermore, chamfers are provided at the opposite ends of the clamping block 1 and the clamping block 2 to facilitate the loading of the piston pin.

[0009] Furthermore, arc grooves are arranged at the opposite end faces of the clamping block 1 and the clamping block 2, and the notches of the two arc grooves are expanded to facilitate the loading of the piston pin.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The synchronous forming device for the piston pin hole and chamfering improves the structural composition of the clamp mechanism, adds a pressing mechanism to cooperate with the clamp mechanism, and facilitates layout and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 1 is a schematic structural diagram of the synchronous forming device for the piston pin hole and chamfering in Example 1;

[0014] Figure 2 It is a schematic diagram of the matching structure of the clamping block, the carrier block and the pressing block in Example 1;

[0015] Wherein, the accompanying drawings are marked as follows:

[0016] 1. Base plate; 2. Shifting mechanism; 3. Drilling mechanism; 4. Chamfering mechanism; 5. Bracket; 6. Telescopic mechanism; 7. Carrying block; 8. Clamping block 1; 9. Fixing plate; 10. Groove; 11. Chamfering; 12. Guide cylinder; 13. Elastic member; 14. Guide rod; 15. Pressing block; 16. V-shaped groove; 17. Clamping block 2; 18. Arc groove; 21. Nut seat. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] Example 1

[0019] like Figure 1 As shown, in this example, the piston pin hole and chamfering synchronous forming device includes a base plate 1, a chamfering mechanism 4, a drilling mechanism 3, a shifting mechanism 2, and a clamping mechanism. A base plate is added, and the chamfering mechanism 4, the drilling mechanism 3, the shifting mechanism 2, the clamping mechanism, etc. are installed on the base plate. Figure 1 As shown, the shifting mechanism adopts a screw nut seat type, and a chamfering mechanism 4 and a drilling mechanism 3 are respectively installed on both sides of the shifting mechanism 2. The drilling mechanism and the chamfering mechanism are arranged at intervals along the extension direction of the shifting mechanism.

[0020] A clamp mechanism is installed at the moving end of the shift mechanism 2, that is, on the nut seat 21, to clamp the piston pin with the clamp mechanism, and the shift mechanism moves the clamp mechanism in turn to the drilling mechanism and the chamfering mechanism. The drilling mechanism and the chamfering mechanism are both composed of common structures, such as moving the slide with a screw shift mechanism, and placing corresponding chamfering components, drilling components, etc. on the slide. The slide is moved by the screw shift mechanism so that the chamfering components, drilling components, etc. on the slide can drill and chamfer the piston pin, such as chamfering inner angles or outer circles.

[0021] like Figure 1 , Figure 2 As shown, in this example, the clamp mechanism includes a clamp block 1 8, a clamp block 2 17, and a carrier block 7. A groove 10 is formed on the top surface of the carrier block 7, such as a hemispherical shape. The two sides of the carrier block 7 are elastically connected to the clamp block 1 8 and the clamp block 2 17, respectively. The arc groove 18 is formed on the opposite end surfaces of the clamp block 1 8 and the clamp block 2 17 to fit the arc surface of the peripheral wall of the piston pin. For elastic connection, for example, the fixing plates 9 are relatively installed on the nut seat 21, the carrier block 7 is fixed between the two fixing plates 9, the clamp block 1 8 is correspondingly arranged between the left fixing plate 9 and the carrier block 7, and the clamp block 2 17 is correspondingly arranged between the right fixing plate 9 and the carrier block 7. An elastic member 13, such as a spring, is arranged between the clamp block 1, the clamp block 2 and the adjacent fixing plates. Preferably, a guide cylinder and a guide rod are added, the guide cylinder 12 is fixed on the fixing plate 9, and the guide rod 14 is fixed on the corresponding clamp block. The end of the guide rod 14 extends into the guide cylinder 12, and the elastic member 13 is sleeved on the guide rod 14. The two ends of the elastic member 13 respectively abut the guide cylinder 12 and the corresponding clamp block. The chamfers 11 may be formed at the edges of the opposite ends of the clamping block 1 and the clamping block 2, such as Figure 1 , Figure 2 As shown, it is convenient for the external clamping and loading mechanism to press down the chamfered position to move the two clamps away from each other. Of course, the notches at both ends of clamp block one and clamp block two can also be selected to be expanded. For example, the end notches are tapered, which makes it convenient for the external clamping and loading mechanism to insert the piston from the end notches, thereby facilitating the loading of the piston pin.

[0022] like Figure 1 , Figure 2 As shown, a pressing mechanism is installed on one side of the chamfering mechanism 4 and the drilling mechanism 3. The pressing mechanism includes a bracket 5, a telescopic mechanism 6, and a pressing block 15. The bracket 5 is partially located above the moving path of the clamp mechanism. The telescopic mechanism 6, such as a cylinder or a hydraulic cylinder, is longitudinally arranged on the upper side of the bracket. The moving end of the telescopic mechanism 6 passes through the bracket 5 and fixes the pressing block 15. A V-shaped groove 16 is formed on the bottom surface of the pressing block 15. After the clamp mechanism moves to a predetermined position, the pressing block is moved downward by the telescopic mechanism. The groove walls on both sides of the V-shaped groove of the pressing block correspondingly abut against the clamping block 1 8 and the clamping block 2 17. Figure 2 As shown, during the downward movement of the pressure block, the inclined surface of the V-groove wall changes to cause the clamping block 1 and the clamping block 2 to move toward each other, corresponding to the piston pin at the clamping groove, and then the clamped piston pin is actuated by the chamfering mechanism, the drilling mechanism, etc.

[0023] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A synchronous forming device for piston pin hole and chamfering, comprising a chamfering mechanism, a drilling mechanism, a shifting mechanism, and a clamping mechanism, wherein the clamping mechanism is arranged at the moving end of the shifting mechanism, and the chamfering mechanism and the drilling mechanism are arranged at the side of the moving path of the clamping mechanism, characterized in that: The clamping mechanism includes clamping block 1, clamping block 2, and a carrier block. A groove is arranged on the top surface of the carrier block, and clamping block 1 and clamping block 2 are elastically connected on both sides of the carrier block. A pressing mechanism is arranged on one side of the chamfering mechanism and the drilling mechanism. The pressing mechanism includes a bracket, a telescopic mechanism, and a pressure block. A V-shaped groove is arranged on the bottom surface of the pressure block. A telescopic mechanism is arranged on the bracket above the moving path of the clamping mechanism. A pressure block is arranged at the moving end of the telescopic mechanism. After the clamping mechanism moves to a predetermined position, the pressure block is moved downward by the telescopic mechanism. The V-shaped groove of the pressure block abuts against clamping block 1 and clamping block 2, so that clamping block 1 and clamping block 2 are clamped on the piston pin at the groove synchronously.

2. The piston pin hole and chamfering synchronous forming device according to claim 1, characterized in that: The displacement mechanism is a screw nut seat type, with fixed plates arranged relatively on the nut seat, a carrier block arranged between the two fixed plates, and clamping block 1 and clamping block 2 arranged correspondingly between the fixed plate and the carrier block, and elastic parts arranged between clamping block 1, clamping block 2 and adjacent fixed plates.

3. The piston pin hole and chamfering synchronous forming device according to claim 2, characterized in that: The fixing plate is provided with a guide cylinder, the corresponding clamping block is provided with a guide rod, the guide rod is sleeved with an elastic member, and two ends of the elastic member respectively abut against the guide cylinder and the corresponding clamping block.

4. The piston pin hole and chamfering synchronous forming device according to claim 1, characterized in that: Chamfers are arranged at opposite ends of the clamping block 1 and the clamping block 2.

5. The piston pin hole and chamfering synchronous forming device according to claim 1, characterized in that: Arc grooves are arranged at the opposite end faces of the clamping block 1 and the clamping block 2, and the groove openings of the two arc grooves are expanded.

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