Linear cutting guide wheel mounting structure

Abstract

The utility model discloses a linear cutting guide wheel installation structure which comprises a base, a U-shaped frame, an upper support, a middle shaft, a guide wheel, a left clamping plate, a right clamping plate, a second bolt and a bearing seat, a long-strip-shaped hole in the left-right direction is formed in the base, and the U-shaped frame is fixedly installed on the long-strip-shaped hole in a threaded connection mode through a first bolt. The lower ends of the two upper supports are installed at the top of the U-shaped frame in a sliding and inserted mode, and the upper supports are fixedly connected with the base through fourth bolts. According to the installation structure, under the condition that an existing molybdenum wire threading structure is not influenced, the assembly of the guide wheel and the rotating shaft is disassembled, then the guide wheel is independently replaced, the upper support can move downwards, the unused molybdenum wire cannot affect disassembly of the guide wheel, the mode of independently replacing the guide wheel can reduce the maintenance cost, and the installation structure has the advantage of facilitating the guide wheel.

Description

Technical Field

[0001] This utility model belongs to the field of wire EDM technology, and in particular relates to a wire EDM guide wheel mounting structure. Background Technology

[0002] Wire EDM is a machining method that uses a moving metal wire (molybdenum wire, copper wire, or alloy wire) as an electrode. A pulsed electric spark discharge between the electrode wire and the workpiece generates high temperatures that melt or vaporize the metal, creating a kerf and thus cutting the part. Guide rollers support and redirect the molybdenum wire. After prolonged use, the grooved surface of the guide rollers wears down, affecting their support and redirection functions. Furthermore, when maintaining or replacing guide rollers, the entire guide roller and its shaft must be replaced, and the entire roll of molybdenum wire must be used up before replacement; otherwise, the guide roller cannot be removed due to the obstruction of the molybdenum wire. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide an installation structure that facilitates quick replacement of wire EDM guide wheels, so that the replacement of guide wheels is not hindered by unused molybdenum wire.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a wire EDM guide wheel mounting structure, including a base, a U-shaped frame, an upper bracket, a central shaft, a guide wheel, a left clamping plate, a right clamping plate, a second bolt, and a bearing seat. The base is provided with elongated holes in the left and right directions. The U-shaped frame is fixedly installed in the elongated holes by a first bolt. The lower ends of the two upper brackets are slidably inserted and installed on the top of the U-shaped frame. The upper brackets are connected and fixed to the base by a fourth bolt. The top of the upper bracket is provided with a positioning groove. A ball bearing is fixedly installed in the bearing seat. The central shaft is composed of a first segment and a second segment that are slidably inserted. Both ends of the central shaft are fixedly connected to the rotating bodies of the ball bearings. The left clamping plate is fixedly sleeved and installed on the first segment. The right clamping plate is fixedly sleeved and installed on the second segment. The guide wheel is slidably sleeved and installed on the central shaft. The second bolt passes through the right clamping plate and the guide wheel and is screwed and fixed to the left clamping plate. The bearing seat is placed in the positioning groove on the top of the upper bracket. The bearing seat is installed and fixed to the upper bracket by a third bolt.

[0005] Furthermore, a positioning key is provided on the central shaft, a bushing is fixedly installed inside the guide wheel, a keyway is provided on the bushing, the bushing is slidably sleeved on the central shaft, and the keyway is slidably engaged with the positioning key.

[0006] Furthermore, the two upper supports are connected and fixed by the fifth bolt and the first limiting sleeve. The first limiting sleeve is sleeved and installed on the screw of the fifth bolt, and the two ends of the first limiting sleeve act on the inner walls of the two upper supports.

[0007] Furthermore, the upper part of the U-shaped frame is connected and fixed by a sixth bolt and a second limiting sleeve. The second limiting sleeve is sleeved and installed on the screw of the sixth bolt, and the two ends of the second limiting sleeve act on the inner wall of the upper part of the U-shaped frame.

[0008] Furthermore, rubber pads are fixedly installed at the four corners of the bottom of the base.

[0009] Compared with the prior art, the advantages of this utility model are: this installation structure can disassemble the combination of guide wheel and shaft without affecting the existing molybdenum wire threading structure, and then replace the guide wheel separately. The upper bracket can be moved downwards, and the unused molybdenum wire will not affect the disassembly of the guide wheel. The method of replacing the guide wheel separately can reduce maintenance costs and has the advantage of being convenient for the guide wheel. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 This is the front view of this utility model.

[0012] Figure 2 This is a top view of the present invention.

[0013] Figure 3 yes Figure 1 A magnified structural diagram at point M. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments:

[0015] like Figures 1 to 3The wire EDM guide wheel mounting structure shown includes a base 1, a U-shaped frame 2, upper brackets 3, a central shaft 4, guide wheels 6, a left clamping plate 71, a right clamping plate 72, a second bolt 73, and a bearing seat 8. The base 1 has elongated holes 11 running left and right. The U-shaped frame 2 is screwed and fixed to the elongated holes 11 by a first bolt 22. The lower ends of the two upper brackets 3 are slidably inserted into the top of the U-shaped frame 2. The upper brackets 3 are connected and fixed to the base 1 by a fourth bolt 23. A positioning groove is provided on the top of the upper brackets 3. A ball bearing is fixedly installed inside the bearing seat 8. The central shaft 4 is composed of a first segment 40 and a second segment 41 that are slidably inserted. The groove of the first segment 40 is a square hole structure, and the protrusion of the second segment 41 is a square shaft structure, which can prevent the first segment 40 and the second segment 41 from rotating relative to each other after being inserted. The two ends of the central shaft 4 are fixedly connected to the rotating body of the ball bearing. The left clamping plate 71 is fixedly sleeved on the first segment 40, and the right clamping plate 72 is fixedly sleeved on the second segment 41. The guide wheel 6 is slidably sleeved on the central shaft 4. The second bolt 73 passes through the right clamping plate 72 and the guide wheel 6 and is screwed to the left clamping plate 71 for fixation. The bearing seat 8 is placed in the positioning groove at the top of the upper bracket 3. The bearing seat 8 is installed and fixed to the upper bracket 3 by the third bolt 81.

[0016] A positioning key is provided on the central shaft 4, and a bushing 5 is fixedly installed inside the guide wheel 6. The bushing 5 is provided with a keyway. The bushing 5 is slidably fitted onto the central shaft 4, and the keyway is slidably engaged with the positioning key. The installation by the cooperation of the keyway and the positioning key can not only play the role of pre-positioning, making it easy for the guide wheel 6 to be aligned with the connecting holes of the left clamping plate 71 and the right clamping plate 72, but also reduce the shearing force on the second bolt 73, and prevent the second bolt 73 from bending and deforming during use.

[0017] The two upper supports 3 are connected and fixed by the fifth bolt 31 and the first limiting sleeve 310. The first limiting sleeve 310 is sleeved on the screw of the fifth bolt 31. The two ends of the first limiting sleeve 310 act on the inner wall of the two upper supports 3 to increase the connection strength between the two upper supports 3.

[0018] The upper part of the U-shaped frame 2 is connected and fixed by the sixth bolt 21 and the second limiting sleeve 210. The second limiting sleeve 210 is sleeved on the screw of the sixth bolt 21. The two ends of the second limiting sleeve 210 act on the inner wall of the upper part of the U-shaped frame 2 to increase the structural strength of the upper part of the two U-shaped frames 2.

[0019] Rubber pads 12 are fixedly installed at the four corners of the bottom of the base 1. After the base 1 is screwed to the tooling table, the rubber pads 12 can play a shock absorption role and improve the stability of the guide wheel 6 in use.

[0020] Loosening the first bolt 22 allows for adjustment of the installation position of the U-shaped frame 2 along the elongated hole 11. When maintenance and replacement of the guide wheel 6 are required, first loosen the fourth bolt 23 and pull it out. The upper bracket 3 slides downward in the base 1. Then unscrew the third bolt 81 to remove the bearing seat 8 from the top of the upper bracket 3. Then remove the second bolt 73 to separate the first segment 40 of the central shaft 4 from the first segment 41. After pulling the guide wheel 6 and the right clamp 72 out of the central shaft 4, replace the guide wheel 6 and reassemble. The molybdenum wire is embedded in the groove of the guide wheel 6, and the guide wheel 6 achieves the support and reversal requirements of the molybdenum wire.

Claims

1. A wire EDM guide wheel mounting structure, characterized in that: The system includes a base (1), a U-shaped frame (2), an upper bracket (3), a central shaft (4), a guide wheel (6), a left clamping plate (71), a right clamping plate (72), a second bolt (73), and a bearing seat (8). The base (1) has a long slot (11) in the left-right direction. The U-shaped frame (2) is fixedly installed on the long slot (11) by a first bolt (22). The lower ends of the two upper brackets (3) are slidably inserted and installed on the top of the U-shaped frame (2). The upper brackets (3) are connected and fixed to the base (1) by a fourth bolt (23). The top of the upper brackets (3) is provided with a positioning groove. A ball bearing is fixedly installed in the bearing seat (8). The central shaft (4) is composed of a first segment (40) and a second segment (41) that are slidably connected together. Both ends of the central shaft (4) are fixedly connected to the rotating body of the ball bearing. The left clamping plate (71) is fixedly sleeved on the first segment (40), and the right clamping plate (72) is fixedly sleeved on the second segment (41). The guide wheel (6) is slidably sleeved on the central shaft (4). The second bolt (73) passes through the right clamping plate (72), the guide wheel (6) and is screwed to the left clamping plate (71). The bearing seat (8) is placed in the positioning groove at the top of the upper bracket (3). The bearing seat (8) is fixedly installed to the upper bracket (3) by the third bolt (81).

2. The wire EDM guide wheel mounting structure according to claim 1, characterized in that: A positioning key is provided on the central shaft (4), a bushing (5) is fixedly installed inside the guide wheel (6), a keyway is provided on the bushing (5), the bushing (5) is slidably sleeved on the central shaft (4), and the keyway is slidably fastened on the positioning key.

3. The wire EDM guide wheel mounting structure according to claim 1, characterized in that: The two upper brackets (3) are connected and fixed by the fifth bolt (31) and the first limiting sleeve (310). The first limiting sleeve (310) is sleeved and installed on the screw of the fifth bolt (31). The two ends of the first limiting sleeve (310) act on the inner wall of the two upper brackets (3).

4. The wire EDM guide wheel mounting structure according to claim 1, characterized in that: The upper part of the U-shaped frame (2) is connected and fixed by the sixth bolt (21) and the second limiting sleeve (210). The second limiting sleeve (210) is sleeved and installed on the screw of the sixth bolt (21). The two ends of the second limiting sleeve (210) act on the upper inner wall of the U-shaped frame (2).

5. The wire EDM guide wheel mounting structure according to claim 1, characterized in that: Rubber pads (12) are fixedly installed at the four corners of the bottom of the base (1).

Images