Positioning device for precise wire cutting

Abstract

The utility model discloses a positioning device for precision wire cutting, which belongs to the technical field of precision part wire cutting related equipment and comprises a mounting plate, four corners of the mounting plate are provided with mounting holes, and the mounting plate is used for being mounted on a wire cutting worktable; the fixed clamping piece is fixedly arranged at one end of the mounting plate in the length direction, and is provided with two symmetrical first clamping surfaces and a second clamping surface arranged between the two first clamping surfaces; the movable clamping piece is opposite to the fixed clamping piece, can move along the length direction of the mounting plate, and is provided with two symmetrical first clamping working surfaces and a second clamping surface arranged between the two first clamping surfaces; the limiting unit is movably connected with the second clamping face of the movable clamping piece, can move in the length direction of the mounting plate and is provided with a third clamping working face, the working direction of the third clamping working face is perpendicular to the moving direction of the movable clamping piece, workpieces with irregular edges are positioned and clamped, the number of positioning and clamping sites is multiple, and the limiting unit is provided with a second clamping working face and a third clamping working face. And the machining precision is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of wire cutting related equipment for precision parts, and particularly relates to a positioning device for precision wire cutting. Background Art

[0002] The wire cutting process has the characteristics of small machining allowance and high precision. It is mainly applied to machining some workpieces with complex shapes and small precision, and no redundant waste will be generated.

[0003] Since the metal wire of wire cutting does not directly contact the workpiece in time, the workpiece is generally simply positioned and supported during cutting. Commonly, one end of a workpiece with a certain thickness is clamped and supported, or the edge of the workpiece is positioned. Especially for workpieces with an arc-shaped or wavy edge, the positioning effect is not ideal, the number of positioning points is insufficient, and dislocation and shaking are likely to occur during wire cutting processing, affecting the precision of wire cutting. Summary of the Utility Model

[0004] In view of the above situation, to overcome the defects of the prior art, the utility model provides a positioning device for precision wire cutting, which positions and clamps workpieces with irregular edges, and there are multiple positioning and clamping points to ensure the precision during processing.

[0005] The technical solution adopted by the utility model is as follows: A positioning device for precision wire cutting includes a mounting plate, a fixed clamping member, a movable clamping member, and a limiting unit. Mounting holes are provided at the four corners of the mounting plate for mounting on a wire cutting workbench; a fixed clamping member is fixedly arranged at one end in the length direction of the mounting plate, having two symmetric first clamping surfaces and a second clamping surface arranged between the two first clamping surfaces; a movable clamping member is opposite to the fixed clamping member and can displace along the length direction of the mounting plate, having two symmetric first clamping working surfaces and a second clamping surface arranged between the two first clamping surfaces; the limiting unit is movably connected to the second clamping surface of the movable clamping member and can move along the length direction of the mounting plate, having a third clamping working surface, and the working direction of the third clamping working surface is perpendicular to the moving direction of the movable clamping member.

[0006] Further, the limiting unit includes a support screw rod that movably penetrates the second clamping working surface of the movable clamping member and is threadedly connected to the movable clamping member; a limiting frame that is rotatably connected to the support screw rod through a bushing and is located between the movable clamping member and the fixed clamping member, and an open channel for the up-and-down movement of the third clamping working surface is defined on the side of the limiting frame close to the fixed clamping member; a pressing member is located in the open channel, and the top is connected to an adjusting screw rod through a bushing and can stay at different heights in the open channel for corresponding pressing operations. The adjusting screw rod movably penetrates the top of the open channel and is threadedly connected to the limiting member.

[0007] Further, an adjustment groove is formed in the top end of the mounting plate along the length direction. The adjustment grooves are symmetrically distributed. A moving block that can move along the adjustment groove is provided at the bottom of the movable clamping member. The moving block is connected to a telescopic push rod. The telescopic push rod is arranged in the adjustment groove and is used to drive the moving block to displace along the adjustment groove.

[0008] Further, a support spring is arranged between the moving block and one end wall in the adjustment groove. The support spring deforms correspondingly when the moving block moves.

[0009] Further, a fixed side plate is arranged at one end of the mounting plate in the length direction. The fixed clamping member is fixedly connected to the fixed side plate.

[0010] After adopting the above structure, the beneficial effects of the present utility model are as follows: A positioning device for precision wire cutting proposed by the present utility model can clamp and position workpieces to be processed with different sizes through the provided fixed clamping member and movable clamping member; by respectively arranging a first clamping working surface and a second clamping working surface on the fixed clamping member and the movable clamping member, multi-point clamping and positioning of the workpiece can be carried out. In addition, the limiting unit can replace the second clamping working surface of the movable clamping member and has a third clamping working surface, so as to perform stable clamping and positioning in different working directions, improve the stability of the workpiece during wire cutting operation, and ensure the precision of wire cutting. Description of the Drawings

[0011] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0012] Figure 1 It is a schematic diagram of the overall structure of a positioning device for precision wire cutting proposed by the present utility model;

[0013] Figure 2 It is a partial cross-sectional view of a positioning device for precision wire cutting proposed by the present utility model;

[0014] Figure 3 It is a top view of a positioning device for precision wire cutting proposed by the present utility model;

[0015] Figure 4 It is a schematic diagram of the overall structure of a positioning device for precision wire cutting proposed by the present utility model from another angle.

[0016] In the drawings: 1. Mounting plate, 2. Mounting hole, 3. Fixed clamping member, 4. Movable clamping member, 5. First clamping working surface, 6. Second clamping surface, 7. Fixed side plate, 8. Support screw rod, 9. Limiting frame, 10. Pressing member, 11. Adjusting screw rod, 12. Adjustment groove, 13. Moving block, 14. Telescopic push rod, 15. Support spring. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present invention.

[0018] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0019] As Figures 1 - 4 shown, a positioning device for precision wire cutting includes a mounting plate 1 and a fixed clamping member 3 and a movable clamping member 4 provided on the mounting plate 1. Among them, mounting holes 2 are provided at the four corners of the mounting plate 1 for mounting on a wire cutting workbench; a fixed side plate 7 is provided at one end in the length direction of the mounting plate 1 for assisting in fixing the fixed clamping member 3 mounted at one end of the mounting plate 1, and the movable clamping member 4 moves along the length direction of the mounting plate 1, and the clamping distance from the fixed clamping member 3 can be changed to adapt to the clamping of workpieces of different lengths.

[0020] Here, preferably, the movable clamping member 4 and the fixed clamping member 3 have the same structure, and both have symmetric first clamping working surfaces and a second clamping working surface provided between the two first clamping working surfaces. Specifically, a clamping cavity is recessed on the side where the fixed clamping member 3 and the movable clamping member 4 are close to each other. The two side walls of the clamping cavity are gradually inwardly converging from the outside to the inside. The two gradually inwardly converging side walls respectively form symmetric first clamping working surfaces, and the inner wall between the two side walls in the clamping cavity forms a second clamping working surface, and a predetermined angle is provided at the junction of the first clamping working surface and the second clamping working surface.

[0021] When clamping a workpiece, move the movable clamping member 4 to adaptively clamp the workpiece. At this time, the first clamping working surfaces of the movable clamping member 4 and the fixed clamping member 3 clamp at four positions to limit the movement of the workpiece. For workpieces with irregular edges, the second clamping working surface can perform auxiliary clamping operations when needed.

[0022] In this embodiment, it should be noted that adjustment grooves 12 are formed at the top of the mounting plate 1 along the length direction. The adjustment grooves 12 are symmetrically distributed. A moving block 13 that can move along the adjustment groove 12 is provided at the bottom of the movable clamping member 4. The moving block 13 is connected to a telescopic push rod 14. The telescopic push rod 14 is arranged in the adjustment groove 12 and is used to drive the moving block 13 to displace along the adjustment groove 12. The telescopic push rod 14 is installed at one end of the adjustment groove 12 far from the fixed clamping member 3, and its telescopic end is connected to the moving block 13. When performing telescopic operations, the moving block 13 can slide along the adjustment groove 12 to change the clamping distance between the movable clamping member 4 and the fixed clamping member 3. Preferably, a support spring 15 is provided between the moving block 13 and the end wall of the adjustment groove 12 close to the fixed clamping member 3. The support spring 15 deforms correspondingly when the moving block 13 moves.

[0023] In some preferred embodiments, a limiting unit is installed on the second clamping working surface of the movable clamping member 4. The limiting unit can replace the second clamping working surface of the movable clamping member 4 and be used as a second clamping working surface that can move along the length direction of the mounting plate 1 for auxiliary clamping, and the limiting unit is provided with a third clamping working surface. Specifically, the limiting unit is movably connected to the second clamping surface 6 of the movable clamping member 4 and can move along the length direction of the mounting plate 1. It has a third clamping working surface, and the working direction of the third clamping working surface is perpendicular to the moving direction of the movable clamping member 4.

[0024] Among them, the limiting unit includes a support screw rod 8 that movably penetrates the second clamping working surface of the movable clamping member 4 and is threadedly connected to the movable clamping member 4; a limiting frame 9 that is rotatably connected to the support screw rod 8 through a bushing and is located between the movable clamping member 4 and the fixed clamping member 3. An open channel for the third clamping working surface to move up and down is defined on one side of the limiting frame 9 close to the fixed clamping member 3; a pressing member 10 that is located in the open channel and is connected to an adjusting screw rod 11 through a bushing at the top and can stay at different heights in the open channel for corresponding pressing operations. The adjusting screw rod 11 movably penetrates the top of the open channel and is threadedly connected to the limiting member.

[0025] When clamping a workpiece, the first clamping working surfaces of the movable clamping member 4 and the fixed clamping member 3 adaptively abut against the outside of the workpiece (but in other cases such as when the workpiece size is small, it can only abut against the two clamping working surfaces and the second clamping working surface of the fixed clamping member 3). At this time, by rotating the support screw rod 8, after the limiting frame 9 approaches the workpiece (the workpiece surface is flat and the edge is irregular), the height of the limiting plate is adjusted through the adjusting screw rod 11 to be limited on the upper surface of the workpiece, and the first clamping working surface is cooperated to clamp the workpiece from two directions.

[0026] The specific usage is as follows: Taking a square or rectangular workpiece, or a workpiece with a flat surface and a special-shaped edge, as an example, the device of the present application is installed on the workbench of the wire cutting machine; the workpiece to be cut is placed between the fixed clamping member 3 and the movable clamping member 4, and the distance between the movable clamping member 4 and the fixed clamping member 3 is adjusted by the telescopic push rod 14 to adaptively clamp the workpiece. At this time, both groups of first clamping working surfaces are positioned on the outer wall of the workpiece to perform multi-point positioning operations on the workpiece; at the same time, by rotating the support screw rod 8, the limiting member and the pressing plate are pushed to move to the workpiece. The limiting member is a U-shaped with a lateral opening, and the bottom of the limiting member supports on the bottom of the workpiece. By rotating the adjusting screw rod 11, the pressing member 10 is pressed on the top of the workpiece to position the workpiece. Through the pressing plate and the first clamping working surface, multi-point and different-direction positioning of multiple workpieces is achieved, ensuring the stability of positioning and the accuracy of wire cutting processing.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. In summary, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A positioning device for precision wire cutting, characterized in that, Comprising: An installation plate with installation holes opened at four corners for installation on a wire cutting workbench; A fixed clamping member fixedly arranged at one end in the length direction of the installation plate, having two symmetrical first clamping working surfaces and a second clamping surface arranged between the two first clamping surfaces; A movable clamping member opposite to the fixed clamping member and displaceable along the length direction of the installation plate, having two symmetrical first clamping working surfaces and a second clamping surface arranged between the two first clamping surfaces; A limiting unit movably connected to the second clamping surface of the movable clamping member and movable along the length direction of the installation plate, having a third clamping working surface, and the working direction of the third clamping working surface is perpendicular to the moving direction of the movable clamping member.

2. The positioning device for precision wire cutting according to claim 1, characterized in that: The limiting unit includes a support screw rod movably penetrating through the second clamping working surface of the movable clamping member and threadedly connected to the movable clamping member; a limiting frame rotatably connected to the support screw rod through a bushing and located between the movable clamping member and the fixed clamping member, and an open channel for the up-and-down movement of the third clamping working surface is defined on one side of the limiting frame close to the fixed clamping member; a pressing member located in the open channel, with its top connected to an adjusting screw rod through a bushing and capable of staying at different heights in the open channel for corresponding pressing operations, the adjusting screw rod movably penetrates through the top end of the open channel and is threadedly connected to a limiting member.

3. A positioning device for precision wire cutting according to claim 1, characterized in that: Adjusting grooves are opened along the length direction at the top end of the installation plate, the adjusting grooves are symmetrically distributed, a moving block capable of moving along the adjusting grooves is arranged at the bottom of the movable clamping member, and the moving block is connected to a telescopic push rod, and the telescopic push rod is arranged in the adjusting grooves for driving the moving block to displace along the adjusting grooves.

4. A positioning device for precision wire cutting according to claim 3, characterized in that: A support spring is arranged between the moving block and one end wall in the adjusting grooves, and the support spring deforms correspondingly when the moving block moves.

5. A positioning device for precision wire cutting according to claim 1, characterized in that: A fixed side plate is arranged at one end in the length direction of the installation plate, and the fixed clamping member is fixedly connected to the fixed side plate.

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