A slow wire guide wheel quick change mounting structure

Abstract

The utility model discloses a kind of slow walking wire guide wheel quick-change mounting structure, including support, adjusting seat, guide wheel subassembly, square hole ball bearing, first nut, second nut and bearing seat, first nut is tightened and two wing plates are cooperated with adjusting seat locking and fixed on support;Bearing seat is fixedly embedded in the chamber of adjusting seat;Guide wheel subassembly is by square shaft, limit shaft and guide wheel main body fixed connection composition, second nut is tightened and limit shoulder surface with guide wheel subassembly locking and fixed on the rotator of ball bearing. The installation structure installs guide wheel subassembly in the through hole of square hole ball bearing rotator in the way of clearance fit by square shaft, then guide wheel subassembly and square hole ball bearing rotator are locked and fixed by second nut. When maintaining and replacing, first nut and second nut are unscrewed, guide wheel subassembly can be disassembled and replaced, in addition, first nut and dustproof sealing ring play the role of dustproof protection for square hole ball bearing.

Description

Technical Field

[0001] This utility model belongs to the field of wire EDM technology, and in particular relates to a quick-change installation structure for a slow wire EDM guide wheel. Background Technology

[0002] The function of the wire EDM guide wheel assembly is to guide and position the electrode wire, ensuring that the electrode wire maintains a precise and stable position and tension during high-speed operation, so that its trajectory as it passes through the workpiece is consistent with the programmed path. Over long-term use, the guide wheel will wear down due to the electrode wire, requiring maintenance and replacement to improve the guiding accuracy of the electrode wire. Existing guide wheel assemblies are fixed to the ball bearings using an interference fit. After the guide wheel body wears down, separating the guide wheel's shaft from the rotating body of the ball bearing becomes difficult, hindering maintenance and replacement. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a quick-change installation structure for slow wire EDM guide wheels that is easy to maintain and replace.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a quick-change installation structure for a wire EDM guide wheel, including a bracket, an adjusting seat, a guide wheel assembly, a square hole ball bearing, a first nut, a second nut, and a bearing seat. The bracket is provided with an elongated hole in the vertical direction. The adjusting seat is configured as a directional structure. The right end of the adjusting seat has wing plates on both sides. The adjusting seat is slidably installed in the elongated hole. The left end of the adjusting seat has a first external thread structure. The first nut is screwed onto the first external thread structure. Tightening the first nut cooperates with the two wing plates to lock and fix the adjusting seat on the bracket. The bearing housing is fixedly embedded in the cavity of the adjusting seat, and the cage of the square hole ball bearing is embedded in the bearing housing with an interference fit. The rotating body of the square hole ball bearing has a square hole structure inside the through hole. The guide wheel assembly consists of a square shaft, a limiting shaft, and a guide wheel body that are fixedly connected. The square shaft is fitted with the through hole of the square hole ball bearing rotating body. The square shaft is slidably installed in the through hole of the square hole ball bearing rotating body. The left end of the square shaft has a second external thread structure. A limiting shoulder is formed between the limiting shaft and the square shaft. The second nut is screwed onto the second external thread structure. Tightening the second nut and the limiting shoulder will lock and fix the guide wheel assembly onto the rotating body of the ball bearing.

[0005] The two wing plates of the adjusting seat have pre-positioned threaded holes.

[0006] As a preferred option, the square shaft, the limiting shaft, and the guide wheel body are integrally formed and coaxially arranged.

[0007] Preferably, the limiting shaft is provided with an annular sealing ring groove, and a dustproof sealing ring is embedded in the sealing ring groove.

[0008] Compared with the prior art, the advantages of this utility model are as follows: In this installation structure, the guide wheel assembly is installed in the through hole of the square hole ball bearing rotating body by a square shaft with clearance fit, and then the guide wheel assembly and the square hole ball bearing rotating body are locked and fixed by the second nut. During maintenance and replacement, the guide wheel assembly can be removed and replaced by unscrewing the first nut and the second nut. In addition, the first nut and the dustproof sealing ring play a role in dust protection for the square hole ball bearing. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] Figure 1 This is a perspective view of the present invention.

[0011] Figure 2 This is a top view of the present invention.

[0012] Figure 3 yes Figure 2 A sectional view along the AA direction.

[0013] Figure 4 yes Figure 3 Enlarged structural diagram at point M. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments: like Figures 1 to 4 The slow wire EDM guide wheel quick-change installation structure shown includes a bracket 1, an adjusting seat 2, a guide wheel assembly, a square hole ball bearing 4, a first nut 5, a second nut 6, and a bearing seat 7. The bracket 1 is provided with an elongated hole 11 in the vertical direction. The adjusting seat 2 is configured as a directional structure. The right end of the adjusting seat 2 has wing plates on both sides. The adjusting seat 2 is slidably installed in the elongated hole 11. The left end of the adjusting seat 2 has a first external thread structure. The first nut 5 is screwed onto the first external thread structure. Tightening the first nut 5 cooperates with the two wing plates to lock and fix the adjusting seat 2 on the bracket 1. The bearing housing 7 is fixedly embedded in the chamber 22 of the adjusting seat 2. The cage of the square hole ball bearing 4 is embedded in the bearing housing 7 with an interference fit. The rotating body of the square hole ball bearing 4 has a square hole structure inside the through hole. The guide wheel assembly is composed of a square shaft 31, a limiting shaft 32, and a guide wheel body 33, which are fixedly connected. The square shaft 31 is fitted with the through hole of the rotating body of the square hole ball bearing 4. The square shaft 31 is slidably installed in the through hole of the rotating body of the square hole ball bearing 4. The left end of the square shaft 31 has a second external thread structure. A limiting shoulder is formed between the limiting shaft 32 and the square shaft 31. The second nut 6 is screwed onto the second external thread structure. Tightening the second nut 6 and the limiting shoulder will lock and fix the guide wheel assembly on the rotating body of the ball bearing 4.

[0015] The two wing plates of the adjusting seat 2 have pre-positioning threaded holes 21. Pre-positioning screws are screwed into the pre-positioning threaded holes 21. After adjusting the height of the adjusting seat 2 in the vertical direction, tighten the pre-positioning screws to press and fix the adjusting seat 2 on the bracket 1. Measure whether the height of the adjusting seat 2 meets the requirements. After meeting the requirements, tighten the first nut 5 to cooperate with the two wing plates to lock and fix the adjusting seat 2 on the bracket 1. The square shaft 31, the limiting shaft 32, and the guide wheel body 33 are integrally formed and coaxially arranged, which has high structural strength and avoids the problem of large rotational runout.

[0016] The limiting shaft 32 is provided with an annular sealing ring groove, and a dustproof sealing ring 8 is embedded in the sealing ring groove. The outer surface of the dustproof sealing ring 8 contacts the inner wall of the through hole of the adjusting seat 2 that passes through the limiting shaft 32, thereby sealing the square hole ball bearing 4.

[0017] When replacing the guide wheel assembly, first unscrew the first nut 5 to expose the chamber 22. At this time, the adjusting seat 2 will not fall due to the action of the pre-positioning screw. Unscrew the second nut 6 and pull the guide wheel assembly out from the through hole of the rotating body of the square hole ball bearing 4 through the square shaft 31. Take the new guide wheel assembly, install its square shaft 31 into the through hole of the rotating body of the square hole ball bearing 4, and lock it with the second nut 6. Then, use the first nut 5 and the two wing plates to lock and fix the adjusting seat 2 onto the bracket 1. The replacement is now complete.

Claims

1. A quick-change mounting structure for a slow wire EDM guide wheel, characterized in that: Includes a bracket (1), an adjusting seat (2), a guide wheel assembly, a square hole ball bearing (4), a first nut (5), a second nut (6), and a bearing seat (7). The bracket (1) is provided with an elongated hole (11) in the vertical direction. The adjusting seat (2) is configured as a directional structure. The right end of the adjusting seat (2) has wing plates on both sides. The adjusting seat (2) is slidably installed in the elongated hole (11). The left end of the adjusting seat (2) has a first external thread structure. The first nut (5) is screwed onto the first external thread structure. Tightening the first nut (5) cooperates with the two wing plates to lock and fix the adjusting seat (2) on the bracket (1). The bearing housing (7) is fixedly embedded in the chamber (22) of the adjusting seat (2), and the cage of the square hole ball bearing (4) is embedded in the bearing housing (7) in an interference fit manner. The square hole ball bearing (4) has a through hole structure inside the rotating body. The guide wheel assembly is composed of a square shaft (31), a limiting shaft (32) and a guide wheel body (33) fixedly connected. The square shaft (31) is fitted with the through hole of the rotating body of the square hole ball bearing (4). The square shaft (31) is slidably installed in the through hole of the rotating body of the square hole ball bearing (4). The left end of the square shaft (31) has a second external thread structure. A limiting shoulder is formed between the limiting shaft (32) and the square shaft (31). The second nut (6) is screwed onto the second external thread structure. Tightening the second nut (6) and the limiting shoulder will lock and fix the guide wheel assembly on the rotating body of the ball bearing (4).

2. The quick-change installation structure for the wire EDM guide wheel according to claim 1, characterized in that: The two wing plates of the adjusting seat (2) have pre-positioned threaded holes (21).

3. The quick-change installation structure for the wire EDM guide wheel according to claim 1, characterized in that: The square shaft (31), the limiting shaft (32), and the guide wheel body (33) are integrally formed and coaxially arranged.

4. The quick-change mounting structure for the slow wire EDM guide wheel according to claim 1, characterized in that: The limiting shaft (32) is provided with an annular sealing ring groove, and a dustproof sealing ring (8) is embedded in the sealing ring groove.

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