Plane machining tool for hard alloy shaft sleeve parts

Abstract

The invention relates to the technical field of shaft sleeve machining, and discloses a plane machining tool for hard alloy shaft sleeve parts, the plane machining tool comprises a main plate, a shaft sleeve part with the diameter phi being 20 mm and a shaft sleeve part with the diameter phi being 40 mm, sliding grooves are formed in the upper surface of the main plate from front to back at equal intervals, the sliding grooves in the two sides of the main plate are symmetrically arranged, and the sliding grooves are formed in the upper surface of the main plate. The inner side of the sliding groove is connected with a sliding locking block in a sliding mode, and the driving mechanism is used for driving the sliding locking block to clamp and fix a shaft sleeve part on the inner side of the sliding groove. Height positioning of the shaft sleeve part is assisted through the supporting column, reciprocating motion of the V-shaped sliding locking block is achieved by rotating the screw rod, and therefore precise positioning and fastening of the shaft sleeve part are achieved, it can be guaranteed that the shaft sleeve part is kept stable in the machining process, displacement or shaking is effectively prevented, and machining precision is improved. In addition, the tool can be suitable for fastening operation of shaft sleeve parts of different sizes, and the applicability of the tool is improved.

Description

Technical Field

[0001] This invention relates to the field of bushing machining technology, specifically to a planar machining fixture for cemented carbide bushing parts. Background Technology

[0002] Currently, for surface grinding of carbide bushings with large height-to-diameter ratios, "V" blocks or "V" brackets are used to clamp the grinding surface. When using "V" blocks for clamping and grinding, the perpendicularity difference between the ground surface and the outer or inner circular surface is greater than 0.15mm (machining is unstable). When using "V" brackets for clamping and grinding, the perpendicularity between the ground surface and the outer or inner circular surface is stable and less than 0.05mm. However, the clamping efficiency is low and only a few parts can be clamped and ground, resulting in low processing efficiency. Neither clamping method can meet production requirements.

[0003] Therefore, we propose a planar machining fixture for cemented carbide bushing parts, which can solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a planar machining fixture for cemented carbide bushing parts, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a planar machining fixture for cemented carbide bushing parts, comprising a main board, a φ20mm bushing part, and a φ40mm bushing part. The upper surface of the main board is provided with a sliding groove, which is equidistant from front to back on the upper surface of the main board. The sliding grooves on both sides of the main board are symmetrically arranged. A sliding locking block is slidably connected to the inner side of the sliding groove. The invention also includes a driving mechanism for driving the sliding locking block to clamp the bushing part inside the sliding groove.

[0006] As an optional solution to the technical solution of this application, the driving mechanism includes a screw for driving the sliding lock block to move. Nut lock blocks are symmetrically installed on both sides of the main board by bolts. The screw is threadedly connected to the nut lock blocks, and the screw corresponds to the sliding groove on the upper surface of the main board. One end of the screw is rotatably connected to the square groove at the end of the sliding lock block away from the bushing part.

[0007] As an optional solution to the technical solution of this application, pads are vertically and symmetrically installed at both ends of the lower surface of the motherboard by bolts, and a support column is vertically arranged on the bottom side of the motherboard, and the support column abuts against the bottom ends of the φ20mm bushing part and the φ40mm bushing part.

[0008] As an optional solution to the technical solution of this application, the φ20mm bushing part and the φ40mm bushing part are matched with the dimensions of the slide groove, and the end of the sliding lock block that is in contact with the bushing part is V-shaped.

[0009] As an optional solution to the technical solution of this application, the double-sided gap between the sliding lock block and the main board groove is 0.01-0.015.

[0010] As an optional solution to the technical solution of this application, a knurled handle is fixedly installed at the end of the screw away from the sliding lock block, and the diameter of the knurled handle is φ25.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: by using the support column to assist in the height positioning of the bushing parts, and by using the rotating screw to realize the reciprocating motion of the "V"-shaped sliding locking block, the bushing parts can be accurately positioned and fastened. This not only ensures that the bushing parts remain stable during processing and effectively prevents displacement or shaking, but also makes the tooling applicable to the fastening operation of bushing parts of different sizes (φ20mm-φ40mm), thus improving the applicability of the tooling. Attached Figure Description

[0012] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a top view of a planar machining fixture for a cemented carbide bushing part according to the present invention;

[0014] Figure 2 This is a bottom side view of a planar machining fixture for a cemented carbide bushing part according to the present invention;

[0015] Figure 3 This is a schematic diagram of the drive mechanism for a planar machining fixture for a cemented carbide bushing type part according to the present invention.

[0016] In the diagram: 1. Main board; 2. φ20mm bushing part; 3. φ40mm bushing part; 4. Sliding lock block; 5. Nut lock block; 6. Screw; 7. Pad; 8. Support column; 9. Slide groove. Detailed Implementation

[0017] Please see Figure 1-Figure 3This invention provides a technical solution: a planar machining fixture for cemented carbide bushing parts, including a main board 1, a φ20mm bushing part 2, and a φ40mm bushing part 3. A groove 9 is formed on the upper surface of the main board 1. The φ20mm bushing part 2 and the φ40mm bushing part 3 are sized to fit the groove 9. A sliding locking block 4 has a V-shaped end that engages with the bushing part. The groove 9 is equidistantly formed on the upper surface of the main board 1 from front to back. The grooves 9 on both sides of the main board 1 are symmetrically arranged. A sliding connection is slidably formed on the inner side of the groove 9. The sliding locking block 4 has a double-sided clearance of 0.01-0.015 with the sliding groove 9 of the main board 1. It also includes a driving mechanism for driving the sliding locking block 4 to clamp the inner bushing part of the sliding groove 9. The driving mechanism includes a screw 6 for driving the sliding locking block 4 to move. Nut locking blocks 5 are symmetrically installed on both sides of the main board 1 by bolts. The screw 6 is threadedly connected to the nut locking blocks 5, and the screw 6 corresponds to the sliding groove 9 on the upper surface of the main board 1. One end of the screw 6 is rotatably connected to the square groove of the sliding locking block 4 away from the bushing part.

[0018] In this technical solution, firstly, the screw 6 is placed into the nut locking block 5. Then, the matching sliding locking block 4 is installed into the slide groove 9 opened in the main board 1. Next, the screw 6 is inserted into the square groove of the sliding locking block 4, and the nut locking block 5 is locked onto the main board 1, but it cannot be tightened at this time. Then, the pad 7 is locked onto the main board 1, but it cannot be tightened too much. Rotate the screw 6 to make the sliding locking block 4 move back and forth in the slide groove 9 of the main board 1. When there is no jamming, first tighten the pad 7, then move the sliding locking block 4, and finally tighten the nut locking block 5.

[0019] In this embodiment, pads 7 are vertically and symmetrically installed at both ends of the lower surface of the motherboard 1 by bolts, and a support column 8 is vertically arranged on the bottom side of the motherboard 1, and the support column 8 abuts against the bottom ends of the φ20mm bushing part 2 and the φ40mm bushing part 3.

[0020] In this technical solution, the lower end of the main board 1 is fixed by the pad 7, and the support column 8 on the bottom side of the main board 1 is used to assist in the height positioning of the bushing parts. The "V"-shaped sliding locking block 4 is reciprocated by rotating the screw 6, thereby achieving precise positioning and fastening of the bushing parts. This not only ensures that the bushing parts remain stable during processing and effectively prevents displacement or shaking, but also makes the tooling applicable to the fastening operation of bushing parts of different sizes (φ20mm-φ40mm), improving the applicability of the tooling. It should be noted that the number of sliding grooves 9 on the upper surface of the main board 1 is no less than 12 sets, which can process multiple sets of φ20mm bushing parts 2-φ40mm bushing parts 3 at the same time, resulting in high work efficiency.

[0021] In this embodiment, a knurled handle is fixedly installed at the end of the screw 6 away from the sliding locking block 4, and the diameter of the knurled handle is φ25.

[0022] In this technical solution, the knurled handle with a diameter of φ25 at the head of the rotating screw 6 generates a torque that allows the sliding locking block 4 to clamp the φ20mm bushing part 2 and the φ40mm bushing part 3 inside the slide groove 9.

Claims

1. A planar machining fixture for cemented carbide bushing parts, comprising a main board (1), a φ20mm bushing part (2), and a φ40mm bushing part (3), characterized in that, The upper surface of the main board (1) is provided with a sliding groove (9). The sliding groove (9) is equally spaced from front to back on the upper surface of the main board (1). The sliding grooves (9) on both sides of the main board (1) are symmetrically arranged. A sliding lock block (4) is slidably connected to the inner side of the sliding groove (9). The main board (1) also includes a drive mechanism for driving the sliding lock block (4) to clamp the bushing parts inside the sliding groove (9).

2. The planar machining fixture for a cemented carbide bushing part according to claim 1, characterized in that: The driving mechanism includes a screw (6) for driving the sliding locking block (4) to move. Nut locking blocks (5) are symmetrically installed on both sides of the main board (1) by bolts. The screw (6) is threadedly connected to the nut locking block (5), and the screw (6) corresponds to the sliding groove (9) on the upper surface of the main board (1). One end of the screw (6) is rotatably connected to the square groove at the end of the sliding locking block (4) away from the bushing part.

3. The planar machining fixture for a cemented carbide bushing part according to claim 2, characterized in that: The two ends of the lower surface of the main board (1) are vertically and symmetrically installed with bolts. A support column (8) is vertically arranged on the bottom side of the main board (1), and the support column (8) abuts against the bottom end of the φ20mm bushing part (2) and the φ40mm bushing part (3).

4. The planar machining fixture for a cemented carbide bushing part according to claim 3, characterized in that: The φ20mm bushing part (2) and φ40mm bushing part (3) are matched with the dimensions of the slide groove (9), and the end of the sliding locking block (4) that is in contact with the bushing part is V-shaped.

5. The planar machining fixture for a cemented carbide bushing part according to claim 2, characterized in that: The gap between the sliding lock block (4) and the sliding groove (9) of the main board (1) is 0.01-0.

015.

6. The planar machining fixture for a cemented carbide bushing part according to claim 2, characterized in that: A knurled handle is fixedly installed at the end of the screw (6) away from the sliding lock block (4), and the diameter of the knurled handle is φ25.

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