Portable electric spark machine auxiliary device

Abstract

The utility model belongs to the technical field of electric discharge machines, and discloses a portable electric discharge machine auxiliary device which comprises a base and a connecting seat arranged on the surface of the base, a vertical rod is fixedly connected to the surface of the connecting seat, a connecting block is arranged on the surface of the vertical rod, a transverse rod penetrates through the surface of the connecting block, and a machine head is fixedly connected to one end of the transverse rod. A through hole is formed in the base, a fixing sleeve is fixedly connected in the through hole, a rotating shaft is arranged in the fixing sleeve in a penetrating mode, one end of the rotating shaft is provided with an installation assembly used for being connected with a workpiece, and the other end of the rotating shaft is provided with an adjusting assembly used for adjusting the angle of the machine head. When the angle of a workpiece is adjusted through the cooperation of the adjusting assembly and the clutch assembly, the adjusting assembly drives the machine head to rotate by an angle in the opposite direction in cooperation with the rotation of the rotating shaft, the current angle of the workpiece and the machine head can be selectively fixed at the same time, the influence on the operation of taking a broken screw tap by a student is avoided, operation can be achieved with one hand, and the operation efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric spark machines, in particular to a portable electric spark machine auxiliary device. Background Art

[0002] An EDM machine refers to a device that uses electric spark discharge machining to generate high-temperature, high-energy electric sparks on the surface of a workpiece. It is mainly used for precision machining, or machining of hard materials and workpieces with complex shapes. Among them, portable EDM machines are widely used because of their portability and high flexibility.

[0003] At present, when using a portable EDM machine to remove a broken tap during teaching and training, students are required to first use the EDM machine to fuse the tap broken in the thread groove of the workpiece. After fusing, the broken tap in the thread needs to be removed. Therefore, the clamping part needs to be disassembled first, and after the workpiece is taken out, tweezers or other tools are used to clamp or pick out the broken tap. However, for workpieces with irregular shapes, after fusing one side, the angle needs to be adjusted to continue fusing. In order to prevent the broken tap from continuing to damage the workpiece thread after fusing, it needs to be removed in time. Therefore, frequent adjustment or disassembly of the workpiece is required, and the process is relatively laborious. In this process, the head of the EDM machine will hinder the removal operation, especially for students who can only operate with one hand. The whole process is relatively more laborious. Utility Model Content

[0004] The purpose of the utility model is to provide a portable electric spark machine auxiliary device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a portable electric spark machine auxiliary device, including a base and a connecting seat arranged on the surface of the base, a vertical pole is fixedly connected to the surface of the connecting seat, a connecting block is arranged on the surface of the vertical pole, a cross bar is passed through the surface of the connecting block, and a machine head is fixedly connected to one end of the cross bar. A through hole is opened in the base, a fixed sleeve is fixedly connected in the through hole, a rotating shaft is passed through the fixed sleeve, a mounting assembly for connecting a workpiece is arranged at one end of the rotating shaft, and an adjustment assembly for adjusting the angle of the machine head is arranged at the other end of the rotating shaft.

[0006] Preferably, the adjustment assembly includes an adjustment rod inserted into a fixed sleeve, the adjustment rod is connected to the fixed sleeve via a spring, one end of the adjustment rod is rotatably connected to a bevel gear B, one end of the rotating shaft close to the bevel gear B is fixedly connected to a bevel gear A, the surface of the connecting seat is rotatably connected to a synchronous wheel A, and the surface of the synchronous wheel A is fixedly connected to a bevel gear C, the surface of the crossbar is limitedly slidably connected to a synchronous wheel B, and the synchronous wheel B is connected to the synchronous wheel A via a synchronous belt;

[0007] It also includes a clutch assembly arranged at the end of the adjustment rod away from the bevel gear B.

[0008] Preferably, the bevel gear A and the bevel gear C are in the same vertical position and face the same side, and the bevel gear B is arranged relative to the bevel gear A and the bevel gear C. When the bevel gear B respectively meshes with the bevel gear A and the bevel gear C, the three can rotate synchronously.

[0009] Preferably, the clutch assembly includes a block A fixedly connected to the end of the adjusting rod away from the bevel gear B, the base surface is provided with a groove adapted to the block A, the adjusting rod surface is provided with a positioning block, the positioning block surface is provided with a plurality of tooth grooves, the rotating shaft surface is fixedly connected with a gear ring adapted to the positioning block, and when the tooth grooves on the positioning block surface are engaged with the gear ring, the rotating shaft cannot rotate.

[0010] Preferably, the positioning block slides on the surface of the adjusting rod, and a block B having a size equivalent to that of the block A is fixedly connected to one side of the positioning block, the blocks A and B are both located in the groove, and the positioning block is connected to the fixed sleeve via an elastic rope.

[0011] Preferably, a pull rope is fixedly connected to one side of the card block B, and the end of the pull rope away from the card block B is ring-shaped.

[0012] Preferably, a guide block having a width equivalent to that of the card block A is fixedly connected in the groove, the guide block surface is arc-shaped, and the card block A surface is provided with a card slot adapted to the guide block.

[0013] Preferably, the mounting assembly includes a mounting block fixedly connected to the end of the rotating shaft away from the bevel gear A, the surface of the mounting block is provided with a U-shaped groove for setting the workpiece, and a clamping plate is slidably connected through the U-shaped groove, and the clamping plate is connected to the mounting block through an adjusting bolt.

[0014] Preferably, one end of the cross bar away from the machine head is fixedly connected with a counterweight.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model provides an adjustment component, and when students need to rotate and adjust the angle of the workpiece, the adjustment component cooperates with the rotation of the rotating shaft to drive the machine head to rotate in the opposite direction, thereby avoiding affecting the student's operation of removing broken taps. Moreover, through the setting of the clutch component, after adjusting the rotation angle of the workpiece, the current angles of the workpiece and the machine head can be fixed at the same time, and the operation can be performed without removing the workpiece, which is convenient for students to remove broken taps. Subsequently, the clamping block A can be moved to reset the machine head. The whole process is convenient and easy for students to operate, which improves the students' practical training operation efficiency to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the utility model for showing the internal structure of the base;

[0019] Figure 3 This is a schematic diagram of the utility model for showing the connection block and its surrounding structures;

[0020] Figure 4 This is a disassembled diagram for showing the card block A and the card block B of the utility model;

[0021] Figure 5 This is a schematic diagram of the utility model for showing the state after the positioning block and the gear ring are separated;

[0022] Figure 6 This is a schematic diagram of the utility model for showing the state where only the clamping block B returns to the normal position.

[0023] In the figure: 1. base; 11. connecting seat; 12. vertical pole; 13. connecting block; 14. cross bar; 15. machine head; 16. counterweight block; 2. mounting block; 21. splint; 22. adjusting bolt; 3. fixing sleeve; 31. rotating shaft; 311. gear ring; 312. bevel gear A; 32. adjusting rod; 321. bevel gear B; 322. spring; 33. block A; 331. guide block; 34. block B; 341. positioning block; 342. elastic rope; 343. pull rope; 4. synchronous wheel A; 41. synchronous wheel B; 42. synchronous belt; 43. bevel gear C. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 6As shown, the embodiment of the utility model provides a portable EDM machine auxiliary device, including a base 1 and a connecting seat 11 arranged on the surface thereof, the connecting seat 11 can be fixed to the surface of the base 1 by means of magnetic attraction or bolt fixing, the surface of the connecting seat 11 is fixedly connected to a vertical pole 12, the surface of the vertical pole 12 is provided with a connecting block 13, the connecting block 13 is slidably connected to the surface of the vertical pole 12, and the height is adjusted conveniently, and the surface of the connecting block 13 is threadedly connected with a handle for fastening the connecting block 13, by tightening the handle, the handle is pressed against the surface of the vertical pole 12, and the connecting block 13 is tightened. The connecting block 13 is fixed, and a cross bar 14 is passed through the surface of the connecting block 13. The cross bar 14 can rotate or slide on the surface of the connecting block 13. One end of the cross bar 14 is fixedly connected to a machine head 15. The bottom of the machine head 15 has an electrode for discharge. This is a prior art and is not described here. A through hole is opened in the base 1, and a fixed sleeve 3 is fixedly connected in the through hole. A rotating shaft 31 is passed through the fixed sleeve 3, and the rotating shaft 31 is rotatably connected in the fixed sleeve 3. One end of the rotating shaft 31 is provided with a mounting component for connecting a workpiece, and the other end of the rotating shaft 31 is provided with an adjusting component for adjusting the angle of the machine head 15.

[0026] like Figure 2 and Figure 3 As shown, further, in this embodiment, the adjustment component includes an adjustment rod 32 that is inserted into the fixed sleeve 3, the adjustment rod 32 is connected to the fixed sleeve 3 through a spring 322, and both ends of the spring 322 are fixedly connected to the adjustment rod 32 and the fixed sleeve 3 respectively, one end of the adjustment rod 32 is rotatably connected to a bevel gear B321, one end of the rotating shaft 31 close to the bevel gear B321 is fixedly connected to a bevel gear A312, the surface of the connecting seat 11 is rotatably connected to a synchronous wheel A4, and the surface of the synchronous wheel A4 is fixedly connected to a bevel gear C43, The surface of the cross bar 14 is limitedly and slidingly connected with a synchronous wheel B41. The surface of the cross bar 14 is provided with a plurality of grooves, and the inner wall shape of the synchronous wheel B41 is adapted to the plurality of grooves. Therefore, the rotation of the synchronous wheel B41 will drive the cross bar 14 to rotate synchronously. The synchronous wheel B41 is connected to the synchronous wheel A4 through a synchronous belt 42. The synchronous belt 42 is respectively connected to the surfaces of the synchronous wheel A4 and the synchronous wheel B41, so that the synchronous wheel A4 and the synchronous wheel B41 can rotate synchronously. It also includes a clutch assembly arranged at the end of the adjusting rod 32 away from the bevel gear B321.

[0027] Among them, the bevel gear A312 and the bevel gear C43 are in the same vertical position and face the same side. Facing the same side means that the toothed side of the bevel gear A312 and the bevel gear C43 are facing the same direction. The bevel gear B321 is arranged relative to the bevel gear A312 and the bevel gear C43, that is, the toothed side of the bevel gear B321 is arranged relative to the toothed side of the bevel gear A312 and the bevel gear C43. When the bevel gear B321 respectively meshes with the bevel gear A312 and the bevel gear C43, the three can rotate synchronously. When the bevel gear B321 is not in contact and meshing with the bevel gear A312 and the bevel gear C43, the bevel gear A312 and the bevel gear C43 have no connection and will not rotate synchronously.

[0028] Specifically, the adjusting rod 32 is pulled by the clutch assembly, and the bevel gear B321 at one end of the adjusting rod 32 is moved to contact and mesh with the bevel gear A312 and the bevel gear C43, so that the three can rotate synchronously. At this time, when the students rotate the installation assembly connected to the workpiece, the rotating shaft 31 will be driven to rotate synchronously, so that the bevel gear A312, the bevel gear B321 and the bevel gear C43 will rotate synchronously, thereby driving the synchronous wheel A4 located on the same axis of the bevel gear C43 to rotate, and the synchronous belt 42 drives the synchronous wheel B41, thereby driving the cross bar 14 to rotate synchronously, and then rotating the machine head 15 to the other side of the rotation direction of the workpiece, thereby avoiding affecting the removal of broken taps. The entire process is completed only by rotating the workpiece, and it is easy for students to operate with one hand.

[0029] like Figure 4 , Figure 5 as well as Figure 6 As shown, in a further embodiment, the clutch assembly includes a block A33 fixedly connected to the end of the adjusting rod 32 away from the bevel gear B321, and a groove adapted to the block A33 is provided on the surface of the base 1. The block A33 is stuck in the groove under normal conditions. At this time, the bevel gear B321 is not engaged with the bevel gear A312 and the bevel gear C43. A positioning block 341 is provided on the surface of the adjusting rod 32, and a plurality of tooth grooves are provided on the surface of the positioning block 341. A gear ring 311 adapted to the positioning block 341 is fixedly connected to the surface of the rotating shaft 31. When the tooth grooves on the surface of the positioning block 341 are engaged with the gear ring 311, the rotating shaft 31 cannot rotate.

[0030] Among them, the positioning block 341 slides on the surface of the adjusting rod 32, and a block B34 with a size equivalent to that of the block A33 is fixedly connected to one side of the positioning block 341. The shape of the block A33 is equivalent to that of the block B34, and the two can be fitted into a whole. The block A33 and the block B34 are both located in the groove, and the positioning block 341 is connected to the fixed sleeve 3 through the elastic rope 342.

[0031] Specifically, by pulling the card block A33 and the card block B34 outward at the same time, the elastic rope 342 is stretched and the spring 322 is compressed, so that the positioning block 341 is disconnected from the gear ring 311, and the bevel gear B321 at the other end is pulled to mesh with the bevel gear A312 and the bevel gear C43. At this time, the rotating shaft 31 can rotate, and after the card block A33 and the card block B34 are pulled out of the groove at the same time, they can be rotated to clamp the two on the surface of the base 1, as shown in FIG. Figure 5 In the displayed state, the workpiece can be rotated to adjust the angle, and the machine head 15 will also rotate synchronously. After the angle is rotated, when the broken tap needs to be taken out, the block B34 can be first moved. When the block B34 is moved to the groove position, the elastic rope 342 rebounds, pulls the positioning block 341 back, and pulls the block B34 back to be re-engaged in the groove, and makes the positioning block 341 continue to mesh with the gear ring 311, thereby positioning the rotating shaft 31. At this time, since the block A33 does not rebound, the bevel gear B321 is still in contact with the bevel gear A312 and the bevel gear When C43 is in the meshing state, the positions of the workpiece and the machine head 15 are fixed, and the operation of removing the broken tap is not affected. After the broken tap is removed, when it is necessary to continue processing, it is only necessary to move the block A33. When the block A33 moves to the groove position, the spring 322 rebounds and pulls the adjusting rod 32 together with the block A33 back into the groove. Therefore, under the rebound action of the spring 322, the adjusting rod 32 is returned to the center, and the bevel gear B321 at one end thereof is disengaged from the bevel gear A312 and the bevel gear C43. The machine head 15, which is no longer constrained, is returned to the center, which is convenient for subsequent operations.

[0032] Furthermore, in the present embodiment, a pull rope 343 is fixedly connected to one side of the clamping block B34, and the length of the pull rope 343 is not limited. The end of the pull rope 343 away from the clamping block B34 is in a ring shape, and the end of the ring shape can be put on the finger, that is, after the clamping block A33 and the clamping block B34 are pulled out and clamped on the surface of the base 1, the end of the pull rope 343 can be put on the finger in a ring shape, and then the workpiece is rotated. After the workpiece is rotated to a predetermined angle, the clamping block B34 can be pulled and returned to the groove by lifting the finger with the help of the pull rope 343. Therefore, when the workpiece is held in one hand, the positioning of the workpiece can also be completed by lifting the finger.

[0033] A guide block 331 having a width equivalent to that of the block A33 is fixedly connected in the groove, and the surface of the guide block 331 is arc-shaped. The guide block 331 is used to guide and limit the block B34. Since the groove can accommodate the blocks A33 and B34, when only the block B34 is returned to the correct position, the block B34 can be movable due to the remaining space in the groove, thereby allowing the positioning block 341 to have a certain movable space. For this reason, by providing the guide block 331, when only the block B34 is returned to the correct position, it will slide from the arc-shaped surface of the guide block 331 to the original position of the block B34, and the guide block 331 will press against the block B34 to limit it and prevent it from moving. A slot matching the guide block 331 is provided on the surface of the block A33. By providing the slot, after the block A33 is returned to the correct position, the guide block 331 will be inserted into the slot to avoid obstruction to the block A33.

[0034] The mounting assembly includes a mounting block 2 fixedly connected to one end of the rotating shaft 31 away from the bevel gear A312. A U-shaped groove is provided on the surface of the mounting block 2 for setting the workpiece, and a clamping plate 21 is slidably connected through the U-shaped groove. The clamping plate 21 is connected to the mounting block 2 through an adjusting bolt 22. The adjusting bolt 22 is threadedly connected to the surface of the mounting block 2, and one end thereof is rotatably connected to the clamping plate 21. When the adjusting bolt 22 rotates, the clamping plate 21 on one side thereof will be driven to move forward, thereby clamping the workpiece.

[0035] Furthermore, a counterweight 16 is fixedly connected to one end of the cross bar 14 away from the machine head 15. The counterweight 16 and the machine head 15 are in the same vertical position, so the counterweight 16 can help the machine head 15 return to the vertical position.

[0036] Working principle:

[0037] When it is necessary to adjust the angle of the workpiece and remove the broken tap, the block A33 and the block B34 are pulled outward at the same time to be pulled out of the groove at the same time, so as to drive the adjusting rod 32 to move outward, and at the same time make the positioning block 341 disengage from the gear ring 311. The outward movement of the adjusting rod 32 will drive the bevel gear B321 to move forward and mesh with the bevel gear A312 and the bevel gear C43 respectively. After pulling out the block A33 and the block B34, they are rotated to one side and stuck on the surface of the base 1. At this time, the mounting block 2 connected to the workpiece can be rotated, and the ring-shaped end of the pull rope 343 is put on the finger in the meantime. Then the angle of the workpiece is adjusted, and the mounting block 2 will synchronously drive the rotating shaft 31 to rotate, thereby rotating the bevel gear A312, cooperating with the bevel gear B321 meshing with it, and at the same time rotating the bevel gear C43. The rotation of the bevel gear C43 will synchronously drive the belt 4 2 drives the synchronous wheel A4 to rotate, cooperates with the synchronous belt 42 to rotate the synchronous wheel B41, and then drives the cross bar 14 to rotate, so that the head 15 adjusts the angle to avoid affecting the subsequent operation of removing the broken tap. After the angle adjustment is completed, when holding the workpiece or the mounting block 2 with one hand, only the finger needs to be pulled to drive the pull rope 343 to pull the clamping block B34, so that it returns to the center and is clamped in the groove, and then the groove on the surface of the positioning block 341 is engaged with the gear ring 311 to fix the rotating shaft 31. At this time, the workpiece and the head 15 are both in the positioning state, and the broken tap can be removed. After taking it out, the clamping block A33 is moved to return it to the groove, so that the bevel gear B321 is disengaged from the bevel gear A312 and the bevel gear C43 respectively, and the head 15 is returned to the vertical position under the action of gravity, so as to continue the broken tap fusing operation.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable electric spark machine auxiliary device, comprising a base (1) and a connecting seat (11) arranged on the surface thereof, wherein a vertical rod (12) is fixedly connected to the surface of the connecting seat (11), a connecting block (13) is arranged on the surface of the vertical rod (12), a cross bar (14) is penetrated on the surface of the connecting block (13), and one end of the cross bar (14) is fixedly connected to a machine head (15), characterized in that: A through hole is formed in the base (1), a fixed sleeve (3) is fixedly connected in the through hole, a rotating shaft (31) is passed through the fixed sleeve (3), a mounting component for connecting a workpiece is provided at one end of the rotating shaft (31), and an adjustment component for adjusting the angle of the machine head (15) is provided at the other end of the rotating shaft (31); The adjustment assembly comprises an adjustment rod (32) inserted into a fixed sleeve (3), the adjustment rod (32) being connected to the fixed sleeve (3) via a spring (322), one end of the adjustment rod (32) being rotatably connected to a bevel gear B (321), one end of the rotating shaft (31) close to the bevel gear B (321) being fixedly connected to a bevel gear A (312), a surface of the connecting seat (11) being rotatably connected to a synchronous wheel A (4), and a surface of the synchronous wheel A (4) being fixedly connected to a bevel gear C (43), a surface of the cross bar (14) being limitedly slidably connected to a synchronous wheel B (41), and the synchronous wheel B (41) being connected to the synchronous wheel A (4) via a synchronous belt (42); It also includes a clutch assembly arranged at an end of the adjustment rod (32) away from the bevel gear B (321); The mounting assembly comprises a mounting block (2) fixedly connected to an end of a rotating shaft (31) away from the bevel gear A (312); a U-shaped groove for arranging a workpiece is provided on a surface of the mounting block (2); a clamping plate (21) is slidably connected via the U-shaped groove; and the clamping plate (21) is connected to the mounting block (2) via an adjusting bolt (22).

2. A portable EDM machine auxiliary device according to claim 1, characterized in that: The bevel gear A (312) and the bevel gear C (43) are at the same vertical position and face the same side. The bevel gear B (321) is arranged relative to the bevel gear A (312) and the bevel gear C (43). When the bevel gear B (321) is respectively engaged with the bevel gear A (312) and the bevel gear C (43), the three can rotate synchronously.

3. A portable EDM machine auxiliary device according to claim 1, characterized in that: The clutch assembly comprises a clamping block A (33) fixedly connected to an end of the adjusting rod (32) away from the bevel gear B (321); a groove matching the clamping block A (33) is provided on the surface of the base (1); a positioning block (341) is provided on the surface of the adjusting rod (32); a plurality of tooth grooves are provided on the surface of the positioning block (341); a tooth ring (311) matching the positioning block (341) is fixedly connected to the surface of the rotating shaft (31); when the tooth grooves on the surface of the positioning block (341) are meshed with the tooth ring (311), the rotating shaft (31) cannot rotate.

4. A portable EDM machine auxiliary device according to claim 3, characterized in that: The positioning block (341) slides on the surface of the adjustment rod (32), and a clamping block B (34) having a size equivalent to that of the clamping block A (33) is fixedly connected to one side of the positioning block (341), the clamping block A (33) and the clamping block B (34) are both located in the groove, and the positioning block (341) is connected to the fixed sleeve (3) via an elastic rope (342).

5. A portable EDM machine auxiliary device according to claim 4, characterized in that: A pull rope (343) is fixedly connected to one side of the clamping block B (34), and one end of the pull rope (343) away from the clamping block B (34) is in a ring shape.

6. A portable EDM machine auxiliary device according to claim 3, characterized in that: A guide block (331) having a width equivalent to that of the clamping block A (33) is fixedly connected in the groove, the surface of the guide block (331) is arc-shaped, and a clamping groove adapted to the guide block (331) is provided on the surface of the clamping block A (33).

7. A portable EDM machine auxiliary device according to claim 1, characterized in that: One end of the cross bar (14) away from the machine head (15) is fixedly connected to a counterweight block (16).

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