A kind of linear cutting clamp for shaft part hole processing

Abstract

The application relates to a wire cutting clamp for machining holes of shaft parts, which comprises a bottom plate, a mounting block and a base, the base is placed on the bottom plate, a first V-shaped groove is arranged on the base, the mounting block is a square block, the mounting block is placed in the first V-shaped groove, a limiting assembly for limiting the movement of the mounting block is arranged on the base, a transmission pressure frame is rotationally connected to the bottom plate, a pressure rod is arranged on the transmission pressure frame, one end of the base is provided with a pressure groove, the pressure rod is embedded in the pressure groove, a pressing assembly for ensuring that the transmission pressure frame continuously presses the base is arranged on the bottom plate, and a detection assembly for assisting in checking the angle of a detection rod is arranged on the mounting block. The application has the effect of improving the operation efficiency of the tool clamp.

Description

Technical Field

[0001] This application relates to the field of fixture technology, and in particular to a wire EDM fixture for machining holes in shaft-type parts. Background Technology

[0002] Electrical discharge wire cutting equipment, also known as wire cutting machine, is a CNC machine tool that uses the principle of electric spark discharge to precisely machine conductive materials. It generates pulsed spark discharges between the electrode wire (usually molybdenum or copper wire) and the workpiece. The instantaneous high temperature melts and vaporizes the localized material, thus achieving the cutting of the workpiece. Its characteristics include non-contact operation, no macroscopic cutting force, and the ability to process high-hardness, complex-shaped parts. It is widely used in mold making, aerospace, and other fields.

[0003] Reference Figure 1 Commonly used tooling fixtures for wire EDM machining of shaft parts include a placement plate 01, a stabilizing block 02, a locking bolt 03, a pressure plate 04, a clamping bolt 05, a detection rod 06, a detection block 07, and a support bolt 08. The shaft part passes through the stabilizing block 02 and is secured by the locking bolt 03. The stabilizing block 02 is placed on the placement plate 01, one end of the pressure plate 04 presses against the stabilizing block 02, the support bolt 08 is vertically threaded onto the other end of the pressure plate 04, and the clamping bolt 05 passes through the pressure plate 04 and is threaded onto the placement plate 01. The shaft part has a center hole, the detection rod 06 is inserted into the center hole, and the detection block 07 is placed on the stabilizing block 02.

[0004] When installing the first shaft part, use a dial indicator to determine the placement direction of the stabilizing block 02, ensuring that the stabilizing block 02 remains in a straight line. Then, use the pressure plate 04 to press the stabilizing block 02 to lock it in place. Next, pass the shaft part through the stabilizing block 02, insert the detection rod 06 into the center hole, and place the detection block 07 on the stabilizing block 02. Rotate the shaft part while simultaneously moving the side wall of the detection block 07 away from the detection rod 06. By determining that the distance between the detection rod 06 and the side wall of the detection block 07 is consistent, it is confirmed that the detection rod 06 is in a vertical position, thus confirming that the center hole is in a vertical position. Tighten the rotating locking bolt 03 to lock the shaft part, completing the installation of the tooling and the shaft part. For subsequent machining of shaft parts, only the shaft part needs to be replaced.

[0005] However, the straight installation of the stabilizing block requires prior inspection with a dial indicator to ensure the axial direction of the shaft part. Then, when judging the angle of the measuring rod, the operator needs to manually move the measuring block while rotating the shaft part, and the two slowly move closer together. Thus, both the positioning and installation of the stabilizing block and the vertical alignment of the measuring rod are cumbersome and time-consuming, reducing the operating efficiency of the tooling fixture. Summary of the Invention

[0006] To improve the operating efficiency of tooling fixtures, this application provides a wire EDM fixture for machining holes in shaft-type parts.

[0007] This application provides a wire EDM fixture for machining holes in shaft-type parts, employing the following technical solution: A wire EDM fixture for machining holes in shaft-type parts includes a base plate, a mounting block, and a base. The base is placed on the base plate and has a first V-groove. The mounting block is a square block that is placed into the first V-groove. The base has a limiting component that restricts the movement of the mounting block. A transmission pressure frame is rotatably connected to the base plate and has a pressure rod. One end of the base has a pressure groove into which the pressure rod is embedded. The base plate has a pressure-applying component that ensures the transmission pressure frame continuously applies pressure to the base. The mounting block has a detection component for assisting in verifying the angle of the detection rod.

[0008] By adopting the above technical solution, during assembly, the mounting block is first placed into the first V-groove and restrained by a limiting component. Then, the transmission pressure frame is flipped, pressing the pressure rod into the pressure groove. A pressure-applying component then applies pressure to the transmission pressure frame to stabilize the base. The shaft-like parts are then passed through the mounting block, and the angle of the detection rod is checked using a detection component. Finally, the clamping bolts are used to tighten the shaft-like parts, thus achieving the installation of the shaft-like parts. By coordinating the transmission pressure frame and the pressure rod to apply pressure to the pressure groove and correct the angle of the base, compared to existing technologies, the use of a dial indicator for inspection is reduced, the assembly time of the fixture is shortened, and the operating efficiency of the tooling fixture is improved.

[0009] Optionally, the pressure application assembly includes a fixed plate, a slider, a clamping screw, a connecting ball, and a fixing sleeve. The fixed plate is connected to the base plate and is inclined toward the base position. The fixed plate has a sliding groove, and the slider slides in the sliding groove. The clamping screw is threaded onto the slider. The connecting ball is connected to the end of the clamping screw. A connecting plate is connected to the transmission pressure frame, and the fixing sleeve is connected to the connecting plate. The connecting ball is ball-jointed in the fixing sleeve.

[0010] By adopting the above technical solution, when applying pressure to the transmission pressure frame, rotating the clamping screw applies pressure to the fixed sleeve through the connecting ball, causing the transmission pressure frame to rotate, which in turn drives the pressure rod to rotate, allowing the pressure rod to smoothly enter the pressure groove. The entire process only requires rotating the clamping screw, making the operation convenient and quick, and improving the operating efficiency of the tooling fixture.

[0011] Optionally, the base includes a first seat, a second seat, a slide rod, and an adjusting bolt. The first V-groove is disposed between the first seat and the second seat. Several slide rods are disposed and are all connected to the first seat. The slide rods pass through the second seat. The adjusting bolt is rotatably connected to the first seat and threadedly engaged with the second seat. The adjusting bolt is parallel to the slide rod. One pressure groove is also disposed on both the first seat and the second seat.

[0012] By adopting the above technical solution, since the shaft parts and mounting blocks are installed through an interference fit, the dimensions of the mounting blocks and shaft parts are in one-to-one correspondence. If shaft parts of different sizes need to be processed, the mounting blocks must also be replaced with models that are compatible with the dimensions of the shaft parts. Therefore, it is necessary to improve the base. The relative positions of the first and second seats are limited by the sliding rod, and the distance between the first and second seats is adjusted by the adjusting bolt, making the base suitable for the installation of mounting blocks of different specifications, thus improving the applicability of the base.

[0013] Optionally, the limiting component includes a retaining strip and a connecting strip. The retaining strip is V-shaped and connected within the first V-groove. Two retaining strips are arranged opposite each other, and retaining inclined surfaces are provided on the opposite sidewalls of the two retaining strips. The connecting strip is connected to the mounting block and is also V-shaped. The connecting strip is provided with a contact inclined surface, and the retaining inclined surface fits against the contact inclined surface.

[0014] By adopting the above technical solution, when restricting the mounting block, one corner of the mounting block is placed in the first V-groove, and then the adjusting bolt is rotated to move the second seat and the clamping strip until both clamping strips press against the connecting strip, thereby restricting the degree of freedom of the mounting block and realizing the installation of the mounting block.

[0015] Optionally, the mounting block has a mounting hole and an extrusion groove. The extrusion groove communicates with the mounting hole, through which the shaft part passes. A fixing block is connected to the opening of the extrusion groove. A tightening bolt is threaded onto the fixing block. An extrusion block is slidably fitted inside the extrusion groove. The tightening bolt is rotatably connected to the extrusion block. An extrusion arc groove is formed on the extrusion block, which abuts against the shaft part.

[0016] By adopting the above technical solution, when stabilizing shaft parts, rotating the clamping bolt causes the extrusion block to move until the extrusion groove extrudes the surface of the shaft parts, thereby achieving the effect of stabilizing the shaft parts.

[0017] Optionally, the detection component includes a placement block, an extension plate, and a positioning plate. The placement block has a second V-groove and is placed on the top of the mounting block through the second V-groove. The extension plate is vertically connected to the placement block and is inclined. The distance between the extension plate and the axis of the center hole gradually increases from the placement block to the center hole as a reference direction. The positioning plate is connected to the top of the mounting block. When the detection rod is in a vertical state, the placement block fits against the positioning plate, and the detection rod is completely against the surface of the extension plate.

[0018] By adopting the above technical solution, the placement block is placed on top of the mounting block. The movement direction of the placement block and the extension plate is restricted by the cooperation of the second V-groove with one corner of the mounting block. During the verification, only the placement block needs to be moved until the placement plate is close to the positioning edge. The shaft parts are then rotated to make the detection rod close to the extension plate. Compared with the existing technology, there is no need to adjust the extension plate and the detection rod synchronously, which improves the convenience of adjusting the vertical state of the detection rod.

[0019] Optionally, the extension plate is provided with a light that faces the detection rod, and the placement block is provided with a control switch, the light being electrically connected to the control switch.

[0020] By adopting the above technical solution, the lighting is used to assist in viewing the light gap formed between the detection rod and the extension plate, so that the staff can more conveniently, intuitively and clearly observe whether the detection rod is close to the extension plate.

[0021] Optionally, a backing plate is connected to the base plate, the backing plate being perpendicular to the pressure rod, and during assembly, the side wall of the base is fitted with the backing plate.

[0022] By adopting the above technical solution, the backing plate is used to initially position the placement angle of the base, which facilitates the smooth entry of the pressure rod into the pressure groove and provides convenience for the installation of the base.

[0023] In summary, this application includes at least one of the following beneficial technical effects: During assembly, the mounting block is first placed into the first V-groove and restrained by a limiting component. Then, the transmission pressure frame is flipped to press the pressure rod into the pressure groove. A pressure-applying component then applies pressure to the transmission pressure frame to stabilize the base. Next, the shaft-like part is passed through the mounting block, and the angle of the detection rod is checked using a detection component. Finally, the shaft-like part is secured with clamping bolts, thus completing the installation. By using the cooperation of the transmission pressure frame and the pressure rod to apply pressure to the pressure groove and correct the angle of the base, compared to existing technologies, this reduces the need for dial indicator checks, shortens the fixture assembly time, and improves the operational efficiency of the tooling fixture. When restricting the mounting block, place one corner of the mounting block in the first V-groove, then rotate the adjusting bolt to move the second seat and the clamping strip until both clamping strips press against the connecting strip, thereby restricting the degree of freedom of the mounting block and realizing the installation of the mounting block; The placement block is placed on top of the mounting block. The second V-groove engages with one corner of the mounting block to restrict the movement direction of the placement block and the extension plate. During verification, only the placement block needs to be moved so that the extension plate is on the rotation path of the detection rod. Then, the shaft parts can be rotated so that the detection rod is against the extension plate. Compared with the existing technology, there is no need to adjust the extension plate and the detection rod synchronously, which improves the convenience of adjusting the vertical state of the detection rod. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall fixture used for wire cutting in the prior art.

[0025] Figure 2 This is a schematic diagram of the wire cutting fixture in the embodiments of this application.

[0026] Figure 3 This is an exploded view used in the embodiments of this application to illustrate the structure of the base and the limiting components.

[0027] Figure 4 This is a cross-sectional view used in the embodiments of this application to illustrate the locking structure of shaft-type parts.

[0028] Figure 5 This is a cross-sectional view used in the embodiments of this application to illustrate the structure of the limiting component.

[0029] Figure 6 This is a schematic diagram of the pressure application component in an embodiment of this application.

[0030] Figure 7 This is a schematic diagram of the detection component in an embodiment of this application.

[0031] Explanation of reference numerals in the attached drawings: 01, Placement plate; 02, Stabilizing block; 03, Locking bolt; 04, Pressure plate; 05, Tightening bolt; 06, Detection rod; 07, Detection block; 08, Support bolt; 1, Base plate; 11, Transmission pressure frame; 111, Pressure rod; 12, Backing plate; 2, Mounting block; 21, Anchor bolt; 22, Extrusion block; 3, Base; 31, First seat; 32, Second seat; 33, Slide rod; 34, Adjusting bolt; 4, Limiting component; 41, Anchoring strip; 42, Connecting strip; 5, Pressure application component; 51, Fixing plate; 52, Slider; 53, Tightening screw; 54, Connecting ball; 55, Fixing sleeve; 6, Detection component; 61, Placement block; 611, Control switch; 62, Extension plate; 621, Lighting lamp; 63, Positioning plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 2-7 This application will be described in further detail.

[0033] This application discloses a wire EDM fixture for machining holes in shaft-type parts. (Refer to...) Figure 2 and Figure 3 The wire EDM fixture for machining holes in shaft-type parts includes a base plate 1, a mounting block 2, and a base 3. The base 3 is mounted on the base plate 1 and includes a first seat 31, a second seat 32, sliding rods 33, and adjusting bolts 34. The first seat 31 and the second seat 32 are arranged opposite each other and each has a first V-groove. Several sliding rods 33 are provided, all of which are fixedly connected to the first seat 31. The sliding rods 33 pass through the second seat 32 and are slidably engaged with the second seat 32. The adjusting bolts 34 are rotatably connected to the first seat 31 and are parallel to the sliding rods 33. The adjusting bolts 34 are threadedly engaged with the second seat 32.

[0034] Reference Figure 4 Mounting block 2 is a square block with mounting holes and an extrusion groove. The extrusion groove is connected to the mounting holes. A fixing block is fixedly connected to the opening of the extrusion groove. A tightening bolt 21 is threaded onto the fixing block. An extrusion block 22 is slidably fitted inside the extrusion groove. An extrusion arc groove is opened on the extrusion block 22. The tightening bolt 21 is rotatably connected to the extrusion block 22.

[0035] Reference Figure 2 and Figure 5 A limiting component 4 is provided between the first seat 31 and the second seat 32. The limiting component 4 includes a retaining strip 41 and a connecting strip 42. The retaining strip 41 is V-shaped and fixedly connected in the first V-groove. The two retaining strips 41 are arranged opposite each other, and a retaining slope is provided on the retaining strip 41. The connecting strip 42 is also V-shaped and fixedly connected to the side wall of the mounting block 2. The connecting strip 42 is provided with a contact slope. The connecting strip 42 corresponds one-to-one with the retaining strip 41, and the retaining slope fits against the contact slope.

[0036] When assembling mounting block 2, place one corner of mounting block 2 into the first V-groove, rotate adjusting bolt 34 to move second seat 32, which in turn moves clamping strip 41 until the clamping slope is in contact with the abutting slope, thereby restricting the freedom of the mounting frame and realizing the assembly of mounting block 2.

[0037] Reference Figure 1 and Figure 6 A transmission pressure frame 11 is rotatably connected to the base plate 1. The transmission pressure frame 11 is a parallelogram-shaped frame, and a pressure rod 111 is rotatably connected to the transmission pressure frame 11. Pressure grooves are opened on both the first seat 31 and the second seat 32, and the pressure rod 111 applies pressure within the pressure grooves. A pressure application assembly 5 is provided on the base plate 1. The pressure application assembly 5 includes a fixed plate 51, a slider 52, a clamping screw 53, a connecting ball 54, and a fixed sleeve 55. A connecting plate is fixedly connected to the transmission pressure frame 11, and the fixed sleeve 55 is fixedly connected to the connecting plate.

[0038] Reference Figure 6 The fixing plate 51 is bolted to the base plate 1. The fixing plate 51 is inclined, and its height gradually increases from the fixing plate 51 to the base 3 as a reference direction. The fixing plate 51 has a sliding groove. The slider 52 is slidably fitted in the sliding groove. The clamping screw 53 passes through the slider 52 and is threadedly fitted with the slider 52. The connecting ball 54 is fixedly connected to the end of the clamping screw 53 and is attached to the fixing sleeve 55.

[0039] Reference Figure 6 In order to initially determine the placement angle of the base 3, a backing plate 12 is fixedly connected to the base plate 1. The backing plate 12 is perpendicular to the pressure plate 04, and the first base 31 is attached to the backing plate 12.

[0040] When stabilizing the base 3, place the first base 31 and the second base 32 on the base plate 1. The first base 31 is attached to the backing plate 12. Then, rotate the pressure screw to drive the connecting ball 54 to apply pressure to the fixing sleeve 55, which drives the transmission pressure frame 11 to rotate, so that the pressure rod 111 enters the pressure groove. On the one hand, it presses the base 3 tightly, and on the other hand, it corrects the angle of the base 3, thus realizing the installation of the base 3.

[0041] Reference Figure 1 and Figure 7 A detection component 6 is provided on the mounting block 2. The detection component 6 includes a placement block 61, an extension plate 62, and a positioning plate 63. A second V-groove is formed on the bottom wall of the placement block 61, and the placement block 61 is placed on the top of the mounting block 2 through the second V-groove. The extension plate 62 is vertically fixed to the placement block 61 and is perpendicular to the top wall of the placement block 61. The extension plate 62 is inclined, with the distance from the placement block 61 to the detection rod 06 as the reference direction, and the distance between the extension plate 62 and the detection rod 06 gradually increases. A lighting lamp 621 is installed on the extension plate 62, and the lighting lamp 621 faces the detection rod 06. A control switch 611 is provided on the placement block 61, and the lighting lamp 621 is electrically connected to the control switch 611. The positioning edge is vertically fixed to the top of the mounting block 2, and the placement block 61 is attached to the positioning plate 63. When the detection rod 06 is in a vertical state, the detection rod 06 is completely in contact with the surface of the extension plate 62.

[0042] During testing, the moving placement block 61 moves the extension plate 62 until the placement plate 01 is in contact with the positioning plate 63. The rotating shaft part rotates the detection rod 06 until the detection rod 06 is fully in contact with the extension plate 62, thus realizing the vertical state adjustment of the detection rod 06.

[0043] The implementation principle of a wire EDM fixture for machining holes in shaft parts according to an embodiment of this application is as follows: During installation, one corner of the mounting block 2 is placed into the first V-groove. The adjusting bolt 34 is rotated to move the second seat 32 until the clamping strip 41 presses against the connecting strip 42 to stabilize the mounting block 2. Then, the first seat 31 and the second seat 32 are placed on the base plate 1, with the first seat 31 against the backing plate 12. The clamping screw 53 is rotated, the connecting ball 54 moves, driving the fixing sleeve 55 to move, and the transmission pressure frame 11 rotates, causing the pressure rod 111 to enter the pressure groove to stabilize the first seat 31 and the second seat 32. Then, the shaft part is passed through the mounting hole, and the detection rod 06 is inserted into the center hole. The lighting lamp 621 is turned on, the placement block 61 is moved until it is against the positioning plate 63, and the shaft part is rotated until the detection rod 06 is completely against the extension plate 62. Finally, the clamping bolt 21 is rotated using a tool to move the extrusion block 22 until the extrusion arc groove is against the surface of the shaft part, thus realizing the assembly of the shaft part.

[0044] The pressure groove is pressed by the cooperation of the transmission pressure frame 11 and the pressure rod 111 to correct the angle of the base 3. Compared with the prior art, the step of using a dial indicator for inspection is reduced, the assembly time of the fixture is shortened, and the operating efficiency of the tooling fixture is improved.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wire EDM fixture for machining holes in shaft-type parts, characterized in that: The device includes a base plate (1), a mounting block (2), and a base (3). The base (3) is placed on the base plate (1) and has a first V-groove. The mounting block (2) is a square block and is placed in the first V-groove. The base (3) has a limiting component (4) that restricts the movement of the mounting block (2). A transmission pressure frame (11) is rotatably connected to the base plate (1) and a pressure rod (111) is provided on the transmission pressure frame (11). One end of the base (3) has a pressure groove and the pressure rod (111) is embedded in the pressure groove. The base plate (1) has a pressure component (5) that ensures that the transmission pressure frame (11) continuously applies pressure to the base (3). The mounting block (2) has a detection component (6) for assisting in verifying the angle of the detection rod (06).

2. The wire EDM fixture for machining holes in shaft-type parts according to claim 1, characterized in that: The pressure application assembly (5) includes a fixed plate (51), a slider (52), a clamping screw (53), a connecting ball (54), and a fixed sleeve (55). The fixed plate (51) is connected to the base plate (1) and is inclined toward the base (3). The fixed plate (51) has a groove, and the slider (52) slides in the groove. The clamping screw (53) is threaded onto the slider (52). The connecting ball (54) is connected to the end of the clamping screw (53). A connecting plate is connected to the transmission pressure frame (11), and the fixed sleeve (55) is connected to the connecting plate. The connecting ball (54) is ball-jointed in the fixed sleeve (55).

3. The wire EDM fixture for machining holes in shaft-type parts according to claim 1, characterized in that: The base (3) includes a first seat (31), a second seat (32), a slide rod (33), and an adjusting bolt (34). The first V-groove is disposed between the first seat (31) and the second seat (32). Several slide rods (33) are provided and are all connected to the first seat (31). The slide rods (33) pass through the second seat (32). The adjusting bolt (34) is rotatably connected to the first seat (31) and threadedly engaged with the second seat (32). The adjusting bolt (34) is parallel to the slide rods (33). One pressure groove is also provided on both the first seat (31) and the second seat (32).

4. The wire EDM fixture for machining holes in shaft-type parts according to claim 3, characterized in that: The limiting component (4) includes a retaining strip (41) and a connecting strip (42). The retaining strip (41) is V-shaped and connected in the first V-groove. The two retaining strips (41) are arranged opposite to each other. The sidewalls of the two retaining strips (41) opposite to each other are provided with retaining slopes. The connecting strip (42) is connected to the mounting block (2). The connecting strip (42) is also V-shaped. The connecting strip (42) is provided with abutting slopes. The retaining slopes fit against the abutting slopes.

5. The wire EDM fixture for machining holes in shaft-type parts according to claim 1, characterized in that: The mounting block (2) has a mounting hole and an extrusion groove. The extrusion groove is connected to the mounting hole. Shaft-like parts pass through the mounting hole. A fixing block is connected to the opening of the extrusion groove. A tightening bolt (21) is threaded onto the fixing block. An extrusion block (22) is slidably fitted inside the extrusion groove. The tightening bolt (21) is rotatably connected to the extrusion block (22). An extrusion arc groove is opened on the extrusion block (22). The extrusion arc groove abuts against the shaft-like parts.

6. The wire EDM fixture for machining holes in shaft-type parts according to claim 1, characterized in that: The detection component (6) includes a placement block (61), an extension plate (62), and a positioning plate (63). The placement block (61) has a second V-groove and is placed on the top of the mounting block (2) through the second V-groove. The extension plate (62) is vertically connected to the placement block (61) and is inclined. The distance between the extension plate (62) and the axis of the center hole gradually increases from the placement block (61) to the center hole. The positioning plate (63) is connected to the top of the mounting block (2). When the detection rod (06) is in a vertical state, the placement block (61) fits against the positioning plate (63) and the detection rod (06) is completely against the surface of the extension plate (62).

7. The wire EDM fixture for machining holes in shaft-type parts according to claim 6, characterized in that: An illumination lamp (621) is provided on the extension plate (62), the illumination lamp (621) faces the detection rod (06), and a control switch (611) is provided on the placement block (61), the illumination lamp (621) and the control switch (611) are electrically connected.

8. The wire EDM fixture for machining holes in shaft-type parts according to claim 1, characterized in that: A backing plate (12) is connected to the base plate (1). The backing plate (12) is perpendicular to the pressure rod (111). During assembly, the side wall of the base (3) is attached to the backing plate (12).

Images