Double-end shoulder milling mechanism for piston pin

Abstract

The double-end shoulder milling mechanism comprises a base, a shifting mechanism, a milling cutter mechanism and a clamp mechanism, the clamp mechanism is designed for the piston pin with a convex shoulder, when the clamp mechanism moves to the position of the milling cutter, the inclined face of a second connecting rod abuts against a pressing block to move downwards, and the head portion and the tail portion of a corresponding lifting block move downwards; the peripheral wall between the convex shoulders of the piston pin abuts against the groove wall of the middle portion, the pressing plate is moved downwards through the first telescopic mechanism to fix the piston pin, the convex shoulders are completely exposed to facilitate action of a milling cutter, after the second connecting rod is separated from the pressing block, the head portion and the tail portion are reset to facilitate discharging, and cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of processing devices, in particular to a double-end shoulder milling mechanism for a piston pin. Background Art

[0002] Some piston pins with convex shoulders on the ends need to be milled with a milling cutter mechanism. Generally, the piston pin is placed in a fixture. To facilitate the shoulder milling action, the shoulder needs to be exposed outside the fixture. In this method, the loading and unloading of the piston pin needs to be carried out by a manipulator with a more complex structure, which is costly and 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 double-end milling shoulder mechanism for a piston pin, comprising a base, a shift mechanism is arranged on the base, milling cutter mechanisms are arranged on both sides of the shift mechanism, a clamp mechanism is arranged at the moving end of the shift mechanism, the clamp mechanism comprises a seat body, a lifting block, a telescopic mechanism 1, and a pressure plate, a bracket is arranged on the seat body and a telescopic mechanism 1 is arranged on the bracket, a pressure plate is arranged at the moving end of the telescopic mechanism 1, a lifting block is arranged at the seat body groove below the pressure plate and a receiving groove is arranged at the top surface of the lifting block, the lifting block comprises a head portion, a middle portion, and a tail portion, the middle portion and the The seat body is fixed and the head and the tail are connected to the seat body in a longitudinal sliding manner. A connecting groove 1 and a connecting groove 2 are formed in the seat body, and the head and the tail are fixed as a whole through a connecting rod 1 in the connecting groove 1. The connecting rod 1 is connected to the tail end of the connecting rod 2 in the connecting groove 2. The head end of the connecting rod 2 extends from the end of the seat body and is formed with an inclined surface. A pressure block is arranged on the moving path of the connecting rod 2. In the process of moving toward the milling cutter mechanism, the inclined surface of the connecting rod 2 abuts against the pressure block to move the connecting rod 2 downward, and the head and tail of the lifting block are moved downward synchronously. An elastic member is arranged between the connecting rod 2 and the bottom wall of the connecting groove 2.

[0005] In this scheme, a clamp mechanism is designed for the piston pin with a boss. When it moves to the milling cutter position, the inclined surface of the connecting rod two abuts against the pressure block and moves down, and the corresponding head and tail of the lifting block move down. The surrounding wall between the shoulders of the piston pin abuts against the middle groove wall, and the piston pin is fixed by moving the pressure plate downward through the telescopic mechanism, so that the boss is completely exposed to facilitate the action of the milling cutter. After the connecting rod two is separated from the pressure block, the head and tail are reset to facilitate material cutting and reduce costs.

[0006] Furthermore, the first connecting groove extends along the axial direction of the lifting block, the second connecting groove extends along the moving direction of the clamp mechanism, and the first connecting groove is connected to the second connecting groove, and the reasonable layout facilitates installation.

[0007] Furthermore, the bracket is in a frame shape, and a telescopic mechanism is provided at the horizontal end of the frame to facilitate installation.

[0008] Furthermore, a material ejection mechanism is arranged at the side of the shift mechanism, the inclined surface is separated from the pressing block at the material ejection mechanism, the head and the tail are reset, and the material is unloaded through the material ejection mechanism, thereby improving efficiency.

[0009] Furthermore, the ejection mechanism includes a telescopic mechanism 2 and a ejection block. The ejection block is arranged at the moving end of the telescopic mechanism 2. The moving direction of the ejection block is perpendicular to the axial extension direction of the lifting block. The processed piston pin is ejected by cooperating with the ejection block through the telescopic mechanism 2, thereby improving the processing efficiency.

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

[0011] 1. The utility model improves the clamping mechanism, facilitates shoulder milling, improves processing efficiency and reduces costs. 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 diagram of the top view of the double-end shoulder milling mechanism of the piston pin in Example 1;

[0014] Figure 2 It is a schematic diagram of the matching structure of the inclined surface and the pressing block;

[0015] Figure 3 It is a schematic diagram of the connection structure of the lifting block, the connecting rod 1 and the connecting rod 2;

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Base; 2. Shifting mechanism; 3. Milling cutter mechanism; 4. Clamp mechanism; 5. Pressing block; 6. Telescopic mechanism 2; 7. Top block; 8. Elastic member; 9. Gantry; 40. Base; 41. Lifting block; 42. Bracket; 43. Telescopic mechanism 1; 44. Connecting rod 2; 45. Pressing plate; 46. Connecting rod 1; 400. Connecting groove 1; 401. Connecting groove 2; 410. Middle part; 411. Tail part; 412. Head part; 413. Accommodating groove; 461. Inclined surface. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 , Figure 2 , Figure 3 As shown, in this example, the piston pin double-end shoulder milling mechanism includes a base 1, on which a shift mechanism 2, such as a screw type, is installed. Milling cutter mechanisms 3 are relatively installed at predetermined positions on both sides of the shift mechanism 2, and the milling cutter mechanism can be directly purchased from the market.

[0021] A clamp mechanism 4 is installed at the moving end of the shift mechanism 2, wherein the clamp mechanism 4 includes a seat body 40, a lifting block 41, a telescopic mechanism 43, and a pressure plate 45. The seat body 40 is fixed at the moving end of the shift mechanism, a frame-type bracket 42 is fixed on the seat body 40, a telescopic mechanism 43, such as a cylinder, a liquid cylinder, etc., is installed at the horizontal end of the bracket 42 along the longitudinal direction, and a pressure plate 45 is installed at the moving end of the telescopic mechanism 43.

[0022] A lifting block 41 is placed in the groove of the seat body 40 below the pressing plate 45 . The lifting block 41 is strip-shaped and has a concave receiving groove 413 formed on the top surface of the lifting block. Both ends of the receiving groove 413 extend to the end surface of the lifting block 41 . In this example, the lifting block is composed of two parts, which include a head 412, a middle part 410, and a tail part 411, wherein the middle part is fixed to the seat body, a connecting groove 400 is formed in the seat body below the middle part, the connecting groove 400 extends to the head and the tail, a connecting rod 46 is arranged in the connecting groove 400, the two ends of the connecting rod 1 are respectively fixed to the head 412 and the tail 411, the head and the tail are in a longitudinal sliding fit relationship with the seat body, a connecting groove 2 401 is formed at the seat body corresponding to the middle of the connecting rod 1, the connecting groove 400 extends along the axial direction of the lifting block, the connecting groove 2 401 extends along the moving direction of the clamp mechanism, the connecting groove 1 is connected to the connecting groove 2, a connecting rod 2 44 is arranged in the connecting groove 2, the tail end of the connecting rod 2 44 is fixed to the middle position of the connecting rod 1 46, the head end of the connecting rod 2 44 extends from the end face of the seat body and an inclined surface 461 is formed at the head end, as shown in FIG. Figure 2 shown.

[0023] A pressure block 5 is installed on the moving path of the second connecting rod 44, such as installing a gantry 9 on the base, and fixing the pressure block 5 at the horizontal end of the gantry, and the pressure block is placed toward the seat body. An elastic member 8, such as a spring, is placed between the second connecting rod 44 and the bottom wall of the second connecting groove 401. Under normal conditions, the head and the tail are flush with the middle part through the support of the elastic member. At this time, the piston pin can be pushed into the accommodating groove from the side, and the end bosses of the piston pin are respectively at the head and the tail.

[0024] When the shifting mechanism moves the seat body toward the station where the milling cutter mechanism is located, the inclined surfaces at the two ends of the connecting rod abut against the pressure block. In the process of continuing to move forward, under the pressure of the pressure block, the connecting rod two moves down, the elastic member is compressed, the head and the tail move down relative to the middle part, the surrounding wall between the two shoulders of the piston pin abuts against the groove wall of the middle part, and the telescopic mechanism moves the pressure plate down to cooperate with the middle part to clamp the piston pin, and the milling cutter mechanism can perform shoulder milling. After the shoulder milling is completed, the shifting mechanism resets the seat body, the connecting rod two is separated from the pressure block, and under the action of the elastic member, the head and the tail are reset to a flush state.

[0025] It is optional to increase the unloading station, and place the ejecting mechanism at the unloading station. For example, the ejecting mechanism is installed at the predetermined unloading station on the side of the shifting mechanism. The ejecting mechanism includes a telescopic mechanism 2 6 and a ejecting block 7. The telescopic mechanism 2 is such as a cylinder, a liquid cylinder, etc. The ejecting block 7 is fixed at the moving end of the telescopic mechanism 2 6. The moving direction of the ejecting block is perpendicular to the axial extension direction of the lifting block. At the ejecting mechanism, the inclined surface is separated from the pressing block, and the head and the tail are reset. The processed piston pin is ejected by cooperating with the ejecting block through the telescopic mechanism 2 to improve the processing efficiency.

[0026] 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 piston pin double-end shoulder milling mechanism, comprising a base, a shift mechanism is arranged on the base, milling cutter mechanisms are arranged on both sides of the shift mechanism, and a clamp mechanism is arranged at the moving end of the shift mechanism, characterized in that: The cam is provided with a support frame, and the support frame is provided with a support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame at the movable end of the support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame at the movable end of the support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame at the movable end of the support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame, and a support frame is provided with a support frame, and a support frame 2. The piston pin double-end shoulder milling mechanism according to claim 1, characterized in that: The first connecting groove extends along the axial direction of the lifting block, the second connecting groove extends along the moving direction of the clamp mechanism, and the first connecting groove is connected to the second connecting groove.

3. The piston pin double-end shoulder milling mechanism according to claim 1, characterized in that: The bracket is in the form of a frame, and a telescopic mechanism is arranged at the horizontal end of the frame.

4. The piston pin double-end shoulder milling mechanism according to claim 1, characterized in that: A material ejection mechanism is arranged at the side of the shift mechanism, and the inclined surface is separated from the pressing block at the material ejection mechanism, and the head and the tail are reset.

5. The piston pin double-end shoulder milling mechanism according to claim 4, characterized in that: The material ejection mechanism comprises a second telescopic mechanism and a ejection block. The ejection block is arranged at the moving end of the second telescopic mechanism, and the moving direction of the ejection block is perpendicular to the axial extension direction of the lifting block.

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