Casting front cover vertical machining positioning tool

Abstract

A cast front cover vertical machining positioning tool belongs to the technical field of shaft end front cover positioning and comprises a bottom plate, four stand columns are fixedly installed on the upper surface of the bottom plate, a positioning plate is fixedly installed on the upper surfaces of the four stand columns, a positioning groove is formed in the upper surface of the positioning plate in a penetrating mode, and the inner diameter of the positioning groove is consistent with the outer diameter of a to-be-machined shaft end front cover. A three-jaw self-centering chuck body is installed between the positioning groove and the bottom plate in a rotating mode, chuck jaws are arranged on the upper surface of the three-jaw self-centering chuck body, and a pressing plate used for clamping the shaft end front cover to be machined is detachably installed on the upper surface of the positioning plate. The angle of the shaft end front cover can be conveniently adjusted and fixed, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model belongs to the technical field of shaft end front cover positioning, and particularly relates to a vertical positioning tool for a casting front cover. Background Art

[0002] like Figure 4 As shown, the two left rear ones are both of the axle end front cover 6 shape commonly used on railways. The axle end front cover 6 on the left is in a state before punching, and the axle end front cover 6 on the right is in a state after punching.

[0003] In recent years, for the sake of process optimization and cost reduction, designers and manufacturers have Figure 4 The three bolt holes 61 on the left side of the shaft end front cover 6 are designed to be formed by casting and forging instead of machining and drilling. At the same time, the circular boss and Figure 4 The relative position accuracy requirements of the threaded hole 62 and the bolt hole 61 on the right side of the shaft end front cover 6 are getting higher and higher. How to quickly and accurately position the workpiece has become a difficult problem that needs to be solved in the processing process.

[0004] In order to overcome the above technical difficulties, a vertical positioning tool for casting front cover is proposed. Utility Model Content

[0005] In view of the problem in the prior art that it is difficult to quickly and accurately position the shaft end front cover when drilling a hole, the utility model provides a vertical positioning tool for the casting front cover, which can use the bolt hole of the shaft end front cover to pass through the chuck claw and place it in the positioning groove of the positioning plate. The center position is determined by the cooperation between the inner side wall of the positioning groove and the outer circle of the shaft end front cover. The three-jaw self-centering chuck body is rotated, and the chuck claw drives the shaft end front cover to rotate in the circumferential direction to determine the angle direction of the workpiece. After the angle is determined, the pressure plate is fixed to the positioning plate with bolts to fix the shaft end front cover, and processing can begin. The tool can quickly position the center of the shaft end front cover, facilitate the adjustment of the angle of the shaft end front cover and fixation, and effectively solve the problem in the prior art that it is difficult to quickly and accurately position the shaft end front cover when drilling a hole. The specific technical solution is as follows.

[0006] A casting front cover vertical positioning tool comprises a base plate, four columns are fixedly mounted on the upper surface of the base plate, a positioning plate is fixedly mounted on the upper surface of the four columns, a positioning groove is penetrated through the upper surface of the positioning plate, the inner diameter of the positioning groove is consistent with the outer diameter of the shaft end front cover to be processed, a three-jaw self-centering chuck body is rotatably mounted between the positioning groove and the base plate, the upper surface of the three-jaw self-centering chuck body is provided with chuck jaws, and a pressure plate for clamping the shaft end front cover to be processed is detachably mounted on the upper surface of the positioning plate.

[0007] In the above technical solution, a convex opening is formed through the lower surface of the pressing plate, and the convex opening is located directly above the positioning groove.

[0008] In the above technical solution, screw holes are provided at the four corners of the upper surface of the positioning plate, and mounting holes are provided through the four corners of the pressure plate. Bolts for locking the pressure plate are threadedly installed between the mounting holes and the corresponding screw holes.

[0009] In the above technical solution, the bottom end of the three-jaw self-centering chuck body is embedded and rotatably mounted on the upper surface of the base plate, and a deep groove ball bearing is installed between the three-jaw self-centering chuck body and the base plate.

[0010] In the above technical solution, grooves are symmetrically provided on the upper surface of the positioning plate, and the grooves are all connected to the positioning slots.

[0011] Compared with the prior art, the utility model of a casting front cover vertical positioning tool has the following beneficial effects:

[0012] The utility model utilizes the bolt holes of the shaft end front cover to pass through the chuck jaws and place them in the positioning grooves of the positioning plate. The center position is determined by the fit between the inner sidewall of the positioning groove and the outer circle of the shaft end front cover. The three-jaw self-centering chuck body is rotated, and the chuck jaws drive the shaft end front cover to rotate in the circumferential direction to determine the angle of the workpiece. After the angle is determined, the pressure plate is fixed to the positioning plate with bolts to fix the shaft end front cover, and processing can begin. This tooling can quickly and accurately locate the center of the shaft end front cover, facilitate the adjustment of the angle of the shaft end front cover and fixation, and is convenient and quick to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0014] Figure 2 This is a schematic diagram of the main structure of the present utility model.

[0015] Figure 3 It is a schematic diagram of the explosion structure of the utility model.

[0016] Figure 4 This is a schematic diagram comparing the structures before and after punching of the shaft end front cover of the present invention.

[0017] Figure 1-4 Among them: 1. Base plate; 11. Column; 2. Positioning plate; 21. Positioning groove; 22. Screw hole; 23. Groove; 3. Three-jaw self-centering chuck body; 31. Chuck jaw; 4. Pressing plate; 41. Protruding mouth; 42. Mounting hole; 5. Bolt; 6. Shaft end front cover; 61. Bolt hole; 62. Threaded hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In this embodiment, front, back, left, right, up and down are represented by Figure 1 Describes the datum. Figures 1-4 , the utility model provides a technical solution:

[0020] A casting front cover vertical positioning tool comprises a base plate 1, four columns 11 are fixedly mounted on the upper surface of the base plate 1, a positioning plate 2 is fixedly mounted on the upper surface of the four columns 11, a positioning groove 21 is formed through the upper surface of the positioning plate 2, the inner diameter of the positioning groove 21 is consistent with the outer diameter of the shaft end front cover 6 to be processed, a three-jaw self-centering chuck body 3 is rotatably mounted between the positioning groove 21 and the base plate 1, and chuck jaws 31 are provided on the upper surface of the three-jaw self-centering chuck body 3, and a pressure plate 4 for clamping the shaft end front cover 6 to be processed is detachably mounted on the upper surface of the positioning plate 2;

[0021] It should be noted that if Figure 3 As shown, the lower surface of the pressing plate 4 is provided with a convex opening 41, which is located just above the positioning groove 21. Figure 2 and Figure 3 As shown, screw holes 22 are provided at the four corners of the upper surface of the positioning plate 2, and mounting holes 42 are provided through the four corners of the pressing plate 4. Bolts 5 for locking the pressing plate 4 are screwed between the mounting holes 42 and the corresponding screw holes 22;

[0022] When in use, first adjust the chuck jaws 31 on the three-jaw self-centering chuck body 3 according to the position of the bolt hole 61 of the shaft end front cover 6. Then, the shaft end front cover 6 to be processed is passed through the chuck jaws 31 using its own bolt hole 61 and placed in the positioning groove 21 of the positioning plate 2. The center position is determined by the cooperation between the inner side wall of the positioning groove 21 and the outer circle of the shaft end front cover 6. Rotate the three-jaw self-centering chuck body 3, and the chuck jaws 31 drive the shaft end front cover 6 to rotate in the circumferential direction to determine the angular direction of the workpiece. After determining the angle, use the bolt 5 to pass through the mounting hole 42 and screw it into the screw hole 22 to fix the pressure plate 4 on the positioning plate 2, so as to clamp and fix the shaft end front cover 6. After fixation, the external punching tool can be used to punch the threaded hole 62 on the shaft end front cover 6.

[0023] Specifically, the bottom end of the three-jaw self-centering chuck body 3 is embedded and rotatably mounted on the upper surface of the base plate 1, and a deep groove ball bearing is installed between the three-jaw self-centering chuck body 3 and the base plate 1. The three-jaw self-centering chuck body 3 is rotatably connected to the base plate 1 through the deep groove ball bearing.

[0024] Finally, after the shaft end front cover 6 is processed, it is removed from the positioning groove 21 for convenience. Figure 2 As shown, grooves 23 are symmetrically provided on the upper surface of the positioning plate 2, and the grooves 23 are connected to the positioning grooves 21. The outer side of the shaft end front cover 6 can be grasped with both hands at the two grooves 23 to easily remove it, making it more convenient and quick to remove.

Claims

1. A casting front cover vertical positioning tool, characterized in that: The invention comprises a base plate (1), wherein four columns (11) are fixedly mounted on the upper surface of the base plate (1), a positioning plate (2) is fixedly mounted on the upper surface of the four columns (11), a positioning groove (21) is provided through the upper surface of the positioning plate (2), the inner diameter of the positioning groove (21) is consistent with the outer diameter of the shaft end front cover (6) to be processed, a three-jaw self-centering chuck body (3) is rotatably mounted between the positioning groove (21) and the base plate (1), a chuck jaw (31) is provided on the upper surface of the three-jaw self-centering chuck body (3), and a pressure plate (4) for clamping the shaft end front cover (6) to be processed is detachably mounted on the upper surface of the positioning plate (2).

2. A casting front cover vertical positioning tool according to claim 1, characterized in that: A convex opening (41) is provided through the lower surface of the pressing plate (4), and the convex opening (41) is located directly above the positioning groove (21).

3. A casting front cover vertical positioning tool according to claim 1 or 2, characterized in that: Screw holes (22) are provided at the four corners of the upper surface of the positioning plate (2), and mounting holes (42) are provided through the four corners of the pressure plate (4). Bolts (5) for locking the pressure plate (4) are screwed between the mounting holes (42) and the corresponding screw holes (22).

4. The vertical positioning fixture for casting front cover according to claim 1, characterized in that: The bottom end of the three-jaw self-centering chuck body (3) is embedded and rotatably mounted on the upper surface of the base plate (1), and a deep groove ball bearing is installed between the three-jaw self-centering chuck body (3) and the base plate (1).

5. The vertical positioning fixture for casting front cover according to claim 3, characterized in that: The upper surface of the positioning plate (2) is provided with grooves (23) symmetrically on both sides, and the grooves (23) are both connected to the positioning slots (21).

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