Positioning wire cutting clamp for shaft parts

Abstract

The invention relates to the field of machining, and particularly discloses a positioning linear cutting clamp for shaft parts. The clamp structurally comprises a pressing plate, a clamp fixing groove, a front-end fixing support, a guide sliding shaft, a movable support, a lead screw, a rear-end fixing support and a rotating handle, the whole clamp is supported through the front-end fixing support, the lead screw and the rear-end fixing support, and shaft parts of different lengths are installed by moving the movable support through the lead screw. And the shaft parts with different diameters are positioned by the V-shaped positioning grooves with different models. The device is simple and reasonable in structure, convenient to manufacture, low in manufacturing cost and suitable for machining shaft parts with different diameters and lengths on a wire cutting machine, and the production efficiency of machining is improved.

Description

Technical Field

[0001] The invention relates to the technical field of machining, in particular to a positioning wire cutting fixture for shaft parts. Background Art

[0002] Wire cutting is widely used in the finishing of inner and outer contours and precision pores of mold parts, such as punch, die, convex and concave dies, fixed plates and stripper plates, etc., due to its advantages of high machining accuracy, ability to machine hardened parts and complex contours. However, due to the characteristics of wire cutting machining and the diversity of mold parts and the characteristics of single-piece manufacturing, the support, clamping and determination of reference plane coordinates of workpieces on machine tools are generally inefficient, which seriously affects the product manufacturing cycle. Designing and developing fixtures that can quickly clamp workpieces is an important way to improve the efficiency of wire cutting machining.

[0003] In the related art, when wire cutting is used to process shaft parts, gaskets, pressure plates or vises are usually used to fix the parts. In the prior art, clamping is performed manually, which takes a long time and is difficult to position. At the same time, the clamping process of shaft parts with different diameters is cumbersome. In the related art, during the processing of a single product, fixation and positioning consume a lot of time and cost. During the processing of batches of shaft parts with different diameters, unstable processing accuracy is prone to occur, resulting in off-cut or missed cutting, affecting the product's qualified rate. At the same time, the wire cutting fixtures in the related art are not suitable for clamping shaft parts of multiple specifications. The fixtures are frequently replaced, the operator's workload is high, the operator relies heavily on processing experience, and the processing cycle is long. Therefore, it is necessary to propose a new fixture to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a positioning wire cutting fixture for shaft parts to meet the needs of wire cutting processing of shaft parts with different diameters and improve processing efficiency and processing quality.

[0005] The solution adopted by the present invention to solve its technical problem is: a positioning wire cutting fixture for shaft parts, comprising a front end fixing bracket, two fixture fixing holes are arranged on both sides of the front end fixing bracket, a plurality of threaded holes are arranged on the top of the front end fixing bracket, the threaded holes are installed with a pressure plate fastening screw, the pressure plate is fixed by the pressure plate fastening screw, a small diameter positioning groove, a medium diameter positioning groove and a large diameter positioning groove are arranged on the top of the front end fixing bracket, three through holes are arranged on the inner surface of the front end fixing bracket, wherein the through hole at the middle position is installed with a lead screw, and the through holes at the two end positions are connected with one end of two guide sliding shafts, the lead screw and the guide sliding shaft pass through the movable bracket, and the other end of the lead screw and the guide sliding shaft are fixed to the rear end fixing bracket, two fixture fixing grooves are arranged on both sides of the rear end fixing bracket, a lead screw locking mechanism is installed on the outer side of the rear end fixing bracket, the lead screw passes through the rear end fixing bracket and the lead screw locking mechanism, and a rotating handle is installed at the end of the lead screw.

[0006] The pressing plate is provided with a plurality of through slots for the pressing plate fastening screws to pass through, and two identical pressing plates are respectively mounted on the front fixed bracket and the top of the movable bracket.

[0007] The front end fixed bracket and the top of the movable bracket are provided with a V-shaped small diameter positioning groove, a medium diameter positioning groove and a large diameter positioning groove with the same size and structure, which are used to position shaft parts with different diameters.

[0008] One end of the two guide sliding shafts is connected to the front fixed bracket, and the other end is connected to the rear fixed bracket. The guide sliding shafts penetrate the movable bracket to play a guiding and positioning role.

[0009] The rotating handle drives the lead screw to rotate so that the movable bracket moves on the guide sliding shaft, thereby clamping shaft parts of different lengths.

[0010] The front end fixing bracket and the rear end fixing bracket have fixture fixing grooves with the same structure on both sides.

[0011] The front end fixed bracket, the movable bracket and the lower side of the rear end fixed bracket have the same step structure.

[0012] The lead screw locking mechanism is fixed to the outside of the rear end fixing bracket.

[0013] When in use, place the front and rear fixed brackets between the two horizontal support beams of the wire cutting machine, and use the step structure below the side of the front and rear fixed brackets for positioning. Adjust the position of the mobile bracket by turning the handle to place shaft parts of different lengths. Place the shaft parts in the V-shaped positioning groove of the corresponding size for positioning, and use the clamping plate to tighten the screws and clamping plate to fix them.

[0014] The technical effect of the invention: the invention has a simple and reasonable structural design, is easy to install and operate, has a high efficiency in clamping shaft parts, has a good repeated positioning effect, is suitable for single-piece and batch-processed shaft parts, and has good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 A top view of the front end fixing bracket of the present invention; Figure 3 This is a schematic diagram of the structure of the rotating handle of the present invention; Figure 4 It is a structural schematic diagram of the position of the movable bracket of the present invention.

[0016] In the figure, the upper pressure plate fastening screw hole 1, the pressure plate 2, the clamp fixing groove 3, the screw placement hole 4, the front end fixed bracket 5, the guide slide shaft 6, the small diameter positioning groove 7, the medium diameter positioning groove 8, the large diameter positioning groove 9, the movable bracket 10, the screw 11, the screw locking mechanism 12, the rear end fixed bracket 13, and the rotating handle 14. DETAILED DESCRIPTION

[0017] In order to explain the technical solution, structural features and beneficial effects of the present invention in detail, the present invention is further described in conjunction with the accompanying drawings and implementation modes.

[0018] The figure marks in the drawings of the specification include, pressure plate fastening screw hole 1, pressure plate 2, clamp fixing groove 3, screw placement hole 4, front end fixed bracket 5, guide slide shaft 6, small diameter positioning groove 7, medium diameter positioning groove 8, large diameter positioning groove 9, movable bracket 10, screw 11, screw locking mechanism 12, rear end fixed bracket 13, rotating handle 14.

[0019] like Figure 1 As shown, a positioning wire cutting fixture for shaft parts comprises a front end fixing bracket 5, two fixture fixing grooves 3 are arranged on both sides of the front end fixing bracket 5, a plurality of pressure plate fastening screw holes 1 are arranged on the top of the front end fixing bracket 5, the pressure plate fastening screws are installed in the pressure plate fastening screw holes 1, and the pressure plate fastening screws fix the pressure plate 2, a small diameter positioning groove 7, a medium diameter positioning groove 8, and a large diameter positioning groove 9 are arranged on the top of the front end fixing bracket 5, three through holes are arranged on the inner surface of the front end fixing bracket 5, wherein the through hole at the middle position is used to install a lead screw, and the through holes at the two end positions are connected to one end of two guide slide shafts, the lead screw 11 and the guide slide shaft 6 pass through the movable bracket 10, and the other ends of the lead screw 11 and the guide slide shaft 6 are fixed to the rear end fixing bracket 13, two fixture fixing grooves 3 are arranged on both sides of the rear end fixing bracket 13, a lead screw locking mechanism 12 is installed on the outer side of the rear end fixing bracket 13, the lead screw 11 passes through the rear end fixing bracket and the lead screw locking mechanism 12, and a rotating handle 14 is installed at the end of the lead screw.

[0020] like Figure 2 The direction shown is a schematic diagram of the top view of the structure of the front-end fixing bracket 5. A plurality of pressure plate fastening screw holes are opened on the top of the front-end fixing bracket 5. According to the diameter size of the shaft parts, the parts are placed in the V-shaped positioning groove of the corresponding model. The pressure plate 2 is placed above the parts. The pressure plate fastening screws pass through the pressure plate 2 and are screwed into the pressure plate threaded hole 1 to position and fix the parts.

[0021] like Figure 1 and Figure 3 As shown, a wire cutting fixture for positioning shaft parts, the other end of the lead screw 11 is connected to the rotating handle 14, rotating the rotating handle 14 drives the lead screw 11 to rotate, and the movement of the lead screw 11 realizes the back and forth reciprocating movement of the movable bracket 10, thereby clamping shaft parts of different lengths.

[0022] like Figure 1 He Ru Figure 4 As shown, a wire cutting fixture for positioning shaft parts is provided, wherein a movable bracket 10 has a through hole on each side, a guide sliding shaft 6 passes through the movable bracket 10 through the through hole, a sliding bearing is placed at the position of the through hole, a nut is installed at the through hole in the middle position of the movable bracket 10, and a lead screw 11 drives the nut to make the movable bracket move on the guide optical axis 6.

[0023] A working process of a wire cutting fixture for positioning shaft parts. The fixture is used in conjunction with a horizontal support beam of the working platform. The stepped structures on both sides of the front end fixing bracket 5 and the rear end fixing bracket 13 are placed on the horizontal support beam. The stepped structures play a role of load-bearing and positioning. Screws are used to pass through the fixture fixing slot 3 to fix the entire fixture on the horizontal support beam.

[0024] Before cutting the first shaft workpiece, positioning adjustment is performed. After the adjustment, subsequent part cutting and processing does not require secondary positioning adjustment, which can realize the rapid clamping of wire cutting of shaft parts.

[0025] The above contents are implementation cases of the present invention, and the common knowledge such as the well-known structure and working characteristics are not described in detail in the scheme. It should be pointed out that for those skilled in the art, several improvements and deformations can be made without departing from the geometric structure of the present invention, which should be regarded as the protection scope of the present invention, and these improvements and deformations will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A positioning wire cutting fixture for shaft parts, characterized in that: It includes a front end fixing bracket, two clamp fixing grooves are arranged on both sides of the front end fixing bracket, a plurality of threaded holes are opened on the top of the front end fixing bracket, the threaded holes are installed with pressure plate fastening screws, the pressure plate is fixed by the pressure plate fastening screws, a small diameter positioning groove, a medium diameter positioning groove and a large diameter positioning groove are opened on the top of the front end fixing bracket, three through holes are opened on the inner surface of the front end fixing bracket, wherein the through hole at the middle position is installed with a lead screw, and the through holes at the two end positions are connected with one end of two guide slide shafts, the lead screw and the guide slide shaft pass through the movable bracket, and the other end of the lead screw and the guide slide shaft are fixed to the rear end fixing bracket, two clamp fixing grooves are arranged on both sides of the rear end fixing bracket, a lead screw locking mechanism is installed on the outer side of the rear end fixing bracket, the lead screw passes through the rear end fixing bracket and the lead screw locking mechanism, and a rotating handle is installed at the end of the lead screw.

2. A shaft parts positioning wire cutting fixture according to claim 1, characterized in that: The pressing plate is provided with a plurality of through slots for the pressing plate fastening screws to pass through, and two identical pressing plates are respectively mounted on the front fixed bracket and the top of the movable bracket.

3. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: The front end fixed bracket and the top of the movable bracket are provided with a V-shaped small diameter positioning groove, a medium diameter positioning groove and a large diameter positioning groove with the same size and structure, which are used to position shaft parts with different diameters.

4. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: One end of the two guide sliding shafts is connected to the front fixed bracket, and the other end is connected to the rear fixed bracket. The guide sliding shafts penetrate the movable bracket to play a guiding and positioning role.

5. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: The rotating handle drives the lead screw to rotate so that the movable bracket moves on the guide sliding shaft, thereby clamping shaft parts of different lengths.

6. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: The front end fixing bracket and the rear end fixing bracket have fixture fixing grooves with the same structure on both sides.

7. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: The front end fixed bracket, the movable bracket and the lower side of the rear end fixed bracket have the same step structure.

8. The positioning wire cutting fixture for shaft parts according to claim 1 is characterized in that: The lead screw locking mechanism is fixed to the outside of the rear end fixing bracket.

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