A multi-angle wire cutting fixture for machining inclined holes and its usage method

Abstract

The present invention provides a multi-angle wire cutting fixture for processing inclined holes, which comprises a bottom plate (1), and is characterized in that: a movable plate (2) is hinged on the bottom plate (1), a movable cushion block (3) is arranged on the bottom plate (1), a support rod (2a) corresponding to and cooperating with the movable cushion block (3) is arranged on the movable plate (2), and a component fixture (4) is arranged on the movable plate (2). The present invention can adjust the height of the angle-adjusting support device according to needs to meet different processing requirements. The overall structure is simple, easy to use, with high fixture precision and high practicability. It is suitable for processing inclined holes of various shapes, and has the advantages of high precision for batch parts, etc.

Description

Technical Field:

[0002] The present invention relates to the field of cutting jigs, and specifically, it is a multi-angle wire cutting jig for machining inclined holes and its usage method. Background Art:

[0004] In current mold designs, the design of sliders is relatively common. In a slider assembly, an inclined guide pillar and an inclined guide pillar hole on the slider cooperate with each other to provide the power required for lateral core pulling. Therefore, relatively high requirements are placed on the relative position and accuracy of the inclined guide pillar holes on the slider. If multiple sliders are used in the same mold, then relatively high requirements are placed on the consistency between the sliders, and the same consistency requirements also apply to the inclined guide pillar holes relative to the sliders. Usually, the machining of such inclined holes is completed using numerically controlled finishing equipment. For the machining of inclined holes with small angles, slow wire cutting can be used for machining, but for batch parts, repetitive alignment is required, and the workload is relatively large. If it is an inclined hole with a large angle, a wire cutting auxiliary jig is required for machining, and the jig can only use products of one part number, and different angles cannot be shared.

[0005] Some positioning jigs have also emerged in the prior art, such as the patent application with the patent number 201720904119.0 (a multi-angle rapid positioning jig for wire cutting machining). This patent is a technical solution for rapid positioning without disassembling the workpiece during multi-angle machining of a single workpiece, but this patent cannot achieve precise and rapid positioning for cavity workpieces with angular requirements and relative reference positioning requirements, such as the inclined guide pillar holes of sliders, and the jig cannot achieve rapid switching for batch machining of workpieces.

[0006] The patent application with the patent number 202023143181.3 (a wire cutting angle machining jig device) uses two clamping arms to clamp the workpiece open, and by rotating the screw to apply upward force, the two clamping arms clamp the workpiece to meet the multi-angle machining of the workpiece. However, the accuracy of the machining angle of this patented technology cannot meet the requirements, and it cannot achieve rapid positioning for machining workpieces with different angles, nor can it solve the consistency problem of batch part machining.

[0007] Although there are many types of clamping jigs for wire cutting, and there are also many wire cutting jigs suitable for machining different angles, there is still a lack of a jig that can achieve rapid positioning and rapid switching for workpieces with angular requirements, reference requirements, product consistency requirements, and batch part production requirements in the cavity. Summary of the Invention:

[0009] The present invention is to overcome the deficiencies in the prior art and provide an adjustable multi-angle wire cutting jig for the cavity.

[0010] The present application provides the following technical solutions:

[0011] A multi-angle wire cutting fixture for processing inclined holes, which includes a bottom plate, and is characterized in that: a movable plate is hinged on the bottom plate through a connecting component, an angle adjustment support device corresponding to the movable plate is arranged on the bottom plate, a component included angle corresponding to the workpiece with an inclined hole to be processed is arranged on the movable plate, at least one auxiliary clamping plate corresponding to the component fixture is arranged, a friction layer is connected to one side surface of the auxiliary clamping plate, and a wire cutting relief hole is also arranged on the movable plate.

[0012] On the basis of the above technical solution, the following further technical solutions may also be available:

[0013] The connecting component includes a locking part installation hole arranged on the bottom plate, a locking part corresponding to and connected with the movable plate is inserted in the locking part installation hole, a screw hole communicated with the locking part installation hole is arranged on the end surface of the other end of the bottom plate, and a tightening bolt corresponding to the locking part is arranged through the screw hole.

[0014] The component fixture includes a base with the lower surface connected to the movable plate, a movable bar is also movably connected to the base, a flattening bolt is arranged through the movable bar, and a second adjustment hole corresponding to the flattening bolt is also arranged on the movable bar.

[0015] The angle adjustment support device includes a pair of sliding grooves arranged on the bottom plate, a movable cushion block is inserted in the sliding groove, a locking screw corresponding to the movable cushion block is arranged on the sliding groove, a step part is arranged on the upper part of the movable cushion block, and a support rod corresponding to the step part is arranged on the movable plate.

[0016] The angle adjustment support device includes a top rod inserted through the bottom plate, a fixed nut corresponding to the top rod is arranged on the bottom plate, a ball head is arranged on the top of the top rod, an arc groove corresponding to the ball head is arranged on the movable plate, and a protractor corresponding to the movable plate is arranged on the bottom plate in the arc groove.

[0017] An oil groove is arranged on the movable plate, a hole communicated with the arc groove is arranged in the oil groove, and a liquid suction plug is filled in the hole.

[0018] Several pairs of movable cushion blocks can be arranged, and the lifting heights of the step parts of each pair of movable cushion blocks are different, so as to correspondingly increase the movable plate by an even angle or an odd angle.

[0019] The friction layer is made of materials with the following weight ratios: acrylic fiber, carbon fiber, epoxy resin particles, rubber particles and diatomite particles, wherein the weight percentage of acrylic is 20%-40%, the weight percentage of carbon fiber is 10%-20%, the weight percentage of rubber particles is 5%-20%, the weight percentage of phenolic resin particles is 5% to 0%, and epoxy resin particles are 1-15%.

[0020] A method for using a multi-angle wire cutting fixture for machining inclined holes, characterized by comprising the following steps: 1) Adjust the angle adjustment support device according to the angle of the inclined hole to be machined on the workpiece, so that a corresponding angle is formed between the movable plate and the bottom plate; 2) Use the auxiliary clamping plate and the component fixture to cooperate to fix the workpiece with the inclined hole to be machined on the movable plate; 3) Fix the bottom plate to the wire cutting machine, and then start the machine for machining.

[0021] Advantages of the invention:

[0022] This utility model has the advantages of simple structure, convenient use, high fixture precision, high practicability, being suitable for machining inclined holes of various shapes, and high precision for batch parts. In addition, the setting of the friction layer ensures the clamping stability of the fixture for the component while effectively protecting the clamping surface and avoiding scratches on the workpiece when the fixture clamps the workpiece. Description of the drawings:

[0024] Figure 1 It is a schematic structural diagram when Example 1 of the present invention is not equipped with an angle adjustment support device and is connected to the workbench of the wire cutting machine;

[0025] Figure 2 It is a partial cross-sectional view when the present invention is working;

[0026] Figure 3 It is a schematic diagram after installing the component to be machined on the present invention;

[0027] Figure 4 It is Figure 1 a schematic diagram of the bottom plate in

[0028] Figure 5 It is a schematic structural diagram of the angle adjustment support device in Example 2. Detailed implementation manners:

[0030] Example 1:

[0031] As Figures 1-4 shown, a multi-angle wire cutting fixture for machining inclined holes includes a bottom plate 1, a movable plate 2 is hinged to the bottom plate 1 through a connecting component, an angle adjustment support device 3 corresponding to the movable plate 2 is arranged on the bottom plate 1, a component included angle 4 corresponding to the workpiece 9 with the inclined hole to be machined is arranged on the movable plate 2, an auxiliary clamping plate 7 corresponding to the component fixture 4 is provided, a friction layer 7a is connected to one side surface of the auxiliary clamping plate 7, and a wire cutting relief hole 2c is also arranged on the movable plate 2.

[0032] At one end of the bottom plate 1, a pair of U-shaped grooves 1a connected and cooperated with the workbench 8 of the wire cutting machine are provided, a corresponding connecting bolt 1b is inserted into the groove 1a, and a pressing piece 1c corresponding to the bottom plate 1 is also inserted on the bolt 1b.

[0033] A pair of connecting components are provided at the end of the other end of the bottom plate 1. An activity plate 2 is hinged through the connecting components. The connecting components include a locking part mounting hole 1d provided at the end of the other end of the bottom plate 1, a screw hole 1e communicated with the locking part mounting hole 1d provided on the end face of the other end of the bottom plate 1, and a pressing bolt 1f is inserted through the screw hole 1e. A relief groove 1g corresponding to the wire cutting relief hole 2c is provided on the bottom plate 1 between the two mounting holes 1d. The relief groove 1g is convex-shaped, and the protruding part in the middle extends towards the middle of the bottom plate 1.

[0034] A locking part 6 is installed in the locking part mounting hole 1d. The locking part 6 includes a ring body 6a. An opening is provided on the ring body 6a, and pressing pieces 6b extending outwards are provided on the ring body 6a on both sides of the opening. By inserting the pressing pieces of the locking part 6 into the locking part mounting hole 1d and rotating the pressing bolt 1f to press the pressing pieces 6b, the inner hole diameter of the ring body 6a can be changed, and then the components inserted into the ring body 6a can be locked.

[0035] A rotating shaft 2b corresponding to and cooperating with the ring body 6a extends out at the end of the rear end of the activity plate 2. By inserting the rotating shaft 2b into the ring body 6a, the activity plate 2 is hinged to the bottom plate 1 through the locking part 6.

[0036] The angle adjustment support device 3 includes a pair of sliding grooves 5 provided on the bottom plate 1. The distance between the two sliding grooves 5 is greater than the width of the activity plate 2. An activity cushion block 3a is inserted in each sliding groove 5, and a locking screw 5a is inserted through the groove wall of the sliding groove 5. The activity cushion block 3a is locked by the locking screw 5a so that it can be fixed at a suitable position in the sliding groove 5.

[0037] A stepped part 3c extends out at the upper part of the activity cushion block 3a. A support rod 2a extending outwards corresponding to and forming a lap joint with the stepped part 3c is provided on the thickness end face of the activity plate 2. By lapping the support rod 2a on the steps with different heights of the stepped part 3c, the included angle between the activity plate 2 and the bottom plate 1 is adjusted, and then the angle of the inclined hole to be machined on the inclined hole workpiece 9 to be machined is corresponding.

[0038] A plurality of pairs of the activity cushion blocks 3 can be provided. The lifting heights of the stepped parts of each pair of activity cushion blocks 3 are different, so as to correspond to the even-angle increment or odd-angle increment of the activity plate 2.

[0039] A component fixture 4 is provided on the movable plate 2. The component fixture 4 includes a base 4a extending upward from the upper surface of the rear end of the movable plate 2 and distributed along the width direction of the movable plate 2. A set of threaded holes 4g distributed along the width direction of the movable plate 2 are provided on the upper surface of the base 4a. An activity bar 4d is provided. A set of second adjustment holes 4f distributed along the length direction of the activity bar 4d are provided on the activity bar 4d. A flattening bolt 4e and a first connection bolt 4h are threadedly connected to the activity bar 4d. The activity bar 4d is connected to the base 4a through the connection bolt 4h.

[0040] On both sides of the base 4a, cantilevers 4b are respectively and movably connected through second connection bolts 4k. When the second connection bolts 4k are tightened, the bolt heads will press the cantilevers 4b so that they cannot move. When the cantilevers 4b need to be adjusted, just loosen the second connection bolts 4k. A set of first adjustment holes 4c distributed along the length direction of the cantilever 4b are provided on the cantilever 4b. A clamping bolt 4j is inserted into one of the first adjustment holes 4c.

[0041] One or two auxiliary clamping plates 7 are provided. A friction layer 7a is covered on the clamping surface on one side of the auxiliary clamping plate 7. The friction layer 7a is made of friction materials, and it includes: acrylic fibers, carbon fibers, epoxy resin particles, rubber particles and diatomite particles, wherein the weight percentage of the acrylic is 20%-40%, wherein the weight percentage of the carbon fiber is 10%-20%, wherein the weight percentage of the rubber particles is 5%-20%, wherein the weight percentage of the phenolic resin particles is 5% to 0%, and the epoxy resin particles are 1-15%.

[0042] When the width of the component to be processed is small and cannot be clamped by the clamping bolt 4a, the auxiliary clamping plate can be pushed by the clamping bolt 4a, and the component to be processed can be clamped from the left and right by the auxiliary clamping plate.

[0043] Embodiment 2:

[0044] As Figure 5 shown, the difference between Embodiment 2 and Embodiment 1 lies in the different angle adjustment support devices 3, so the same structures will not be described in detail below.

[0045] The angle adjustment support device 3 includes a top rod 3d inserted through the bottom plate 1. A threaded section is provided on the top rod 3d. A fixed nut 3e corresponding to and cooperating with the top rod 3d is fixedly connected to the bottom plate 1. A ball head 3f is fixedly connected to the top of the top rod 3d. A pair of knurled sections 3t are provided on the rod body of the top rod 3d below the ball head 3f so as to rotate the top rod 3d up and down with a wrench.

[0046] An arc-shaped groove 3g corresponding to the ball head 3f is provided on the bottom surface of the movable plate 2. An oil groove 10 is provided on the upper surface of the movable plate 2. A hole communicating with the arc-shaped groove 3g is provided at the bottom of the oil groove 10. A liquid-absorbing plug 11 is filled in the hole. The liquid-absorbing plug 11 is made of a liquid-absorbing material such as sponge or cotton. It includes a cylindrical portion a inserted into the hole and a nail head portion b located in the oil groove 10. The lubricating liquid is introduced to the lower end surface of the liquid-absorbing plug through the liquid-absorbing plug, and the lubricating liquid can be applied to the ball head when the ball head contacts it.

[0047] A protractor (not shown in the figure) corresponding to the movable plate 2 is provided on the bottom plate 1. By rotating the ejector rod 3d, the movable plate 2 is pushed up and down to move, so as to change the included angle between the movable plate 2 and the bottom plate 1 to correspond to the angle of the inclined hole to be machined on the workpiece 9 to be machined with an inclined hole.

[0048] Working process:

[0049] First, according to the angle of the inclined hole to be machined on the workpiece 9 to be machined with an inclined hole, adjust the angle adjusting support device so that a corresponding angle is formed between the movable plate and the bottom plate, and then lock the rotating shaft of the inserted ring body through the tightening bolt.

[0050] 2) Then, according to the size of the part to be machined, select two auxiliary clamping plates 7 to clamp the workpiece 9 to be machined with an inclined hole from both sides, and then use the clamping bolt 4j to lock it. If the bottom surface of the workpiece 9 to be machined with an inclined hole is a plane, an auxiliary clamping plate 7 can be placed on the upper surface of the workpiece 9 to be machined with an inclined hole, and then the auxiliary clamping plate 7 can be pressed tightly by using the flattening bolt 4e alone to clamp the workpiece 9 to be machined with an inclined hole. (When placing the auxiliary clamping plate 7, the position for drilling the inclined hole needs to be vacated.)

[0051] 3) Fix the bottom plate 1 to the workbench 8 of the wire cutting machine, and then start the machine for processing.

Claims

1. A multi-angle wire cutting fixture for machining inclined holes, which comprises a bottom plate (1), and is characterized in that: A movable plate (2) is hinged on a bottom plate (1) through a connecting component. An angle adjusting support device (3) corresponding to the movable plate (2) is arranged on the bottom plate (1). A component fixture (4) corresponding to the workpiece (9) with an inclined hole to be machined is arranged on the movable plate (2). At least one auxiliary clamping plate (7) corresponding to the component fixture (4) is provided. A friction layer (7a) is connected to one side surface of the auxiliary clamping plate (7). A wire cutting relief hole (2c) is also arranged on the movable plate (2); the connecting component includes a locking piece mounting hole (1d) arranged on the bottom plate (1). A locking piece (6) corresponding to the movable plate (2) is inserted into the locking piece mounting hole (1d). A threaded hole (1e) communicated with the locking piece mounting hole (1d) is arranged on the end surface of the other end of the bottom plate (1). A tightening bolt (1f) corresponding to the locking piece (6) is arranged through the threaded hole (1e); the angle adjusting support device (3) includes a pair of sliding grooves (5) arranged on the bottom plate (1). A movable cushion block (3a) is inserted into the sliding grooves (5). A locking screw (5a) corresponding to the movable cushion block (3a) is arranged on the sliding grooves (5). A step portion (3c) is arranged on the upper portion of the movable cushion block (3a). A support rod (2a) corresponding to the step portion (3c) is arranged on the movable plate (2); the angle adjusting support device (3) includes a ejector rod (3d) arranged through the bottom plate (1). A fixed nut (3e) corresponding to the ejector rod (3d) is arranged on the bottom plate (1). A ball head (3f) is arranged on the top of the ejector rod (3d). An arc-shaped groove (3g) corresponding to the ball head (3f) is arranged on the movable plate (2).

2. The multi-angle wire cutting fixture for machining an inclined hole according to claim 1, wherein: The component fixture (4) includes a base (4a) with a lower surface connected to the movable plate (2). A movable strip (4d) is movably connected to the base (4a). A flattening bolt (4e) is arranged through the movable strip (4d). A second adjusting hole (4f) corresponding to the flattening bolt (4e) is also arranged on the movable strip (4d).

3. The multi-angle wire cutting fixture for machining an inclined hole according to claim 1, wherein: An oil groove (10) is arranged on the movable plate (2). A hole communicated with the arc-shaped groove (3g) is arranged in the oil groove (10). A liquid suction plug (11) is filled in the hole.

4. The multi-angle wire cutting fixture for machining an inclined hole according to claim 1, wherein: A plurality of pairs of the movable cushion blocks (3a) are provided. The lifting heights of the step portions of each pair of movable cushion blocks (3a) are different, so as to correspondingly increase the angle of the movable plate (2) in an even number or an odd number.

5. The multi-angle wire cutting fixture for processing inclined holes according to claim 1, characterized in that: The friction layer (7a) is made of materials with the following weight ratio: acrylic fiber, carbon fiber, epoxy resin particles, rubber particles and diatomite particles. The weight percentage of the acrylic is 20%-40%. The weight percentage of the carbon fiber is 10%-20%. The weight percentage of the rubber particles is 5%-20%. The epoxy resin particles are 1-15%.

6. The usage method of a multi-angle wire cutting fixture for machining inclined holes in claim 1, characterized in that: It includes the following steps: 1) Adjust the angle adjusting support device according to the angle of the inclined hole to be machined on the workpiece, so that a corresponding angle is formed between the movable plate (2) and the bottom plate (1); 2) Use the auxiliary clamping plate (7) and the component fixture (4) to cooperate to fix the workpiece (9) with the inclined hole to be machined on the movable plate (2); fix the bottom plate (1) to the wire cutting machine, and then start the machine for machining.

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