Tool positioning clamp for discharge rotation pulse machining

Abstract

The utility model provides a tool positioning clamp for discharge rotation pulse machining, which comprises a clamp body, the clamp body comprises a fixed seat, and the fixed seat is provided with a clamping opening; the clamp body further comprises a supporting seat located on one side of the fixing seat, a horizontally-arranged rotating shaft and an electrode located on the rotating shaft are arranged on the supporting seat, and the rotating shaft is provided with a driven gear. The clamp body further comprises a driving block used for being connected with a main shaft of the electric spark equipment, and a rack meshed with the driven gear is arranged on the driving block. The electrode comprises a fixing ring and a discharging ring arranged around the circumferential direction of the fixing ring, the discharging ring is located in front of the clamping opening, and the setting angle of the discharging ring in the circumferential direction of the fixing ring is not larger than 180 degrees. The multi-station synchronous machining device has the advantages that the vertical movement of the electric spark machining spindle is converted into rotation, so that the rotation of a plurality of electrodes is synchronously controlled, multi-station synchronous machining is realized, and the machining efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of electric spark machining, in particular to a tooling positioning fixture for electric discharge rotary pulse machining. Background Art

[0002] Most existing EDM processes rely on the vertical lifting control of the spindle to adjust the discharge gap during processing, which is suitable for the processing of through slots or through holes. However, for the processing of some parts with special shapes, it is necessary to use the rotational freedom of the spindle to adjust the discharge gap. However, this type of processing is affected by the vertical height of the equipment, making it difficult to perform superimposed synchronous processing of multiple workpieces, which in turn leads to low processing efficiency. Utility Model Content

[0003] Based on the above problems, the purpose of the utility model is to provide a tooling positioning fixture for discharge rotary pulse machining that converts the vertical movement of the EDM spindle into rotation, so as to achieve synchronous control of the rotation of multiple electrodes, realize multi-station synchronous machining, and effectively improve machining efficiency.

[0004] In view of the above problems, the following technical solutions are provided: a tooling positioning fixture for discharge rotary pulse machining, comprising a clamping body, the clamping body comprising a fixed seat, the fixed seat being provided with a clamping opening; the clamping body also comprises a support seat located on one side of the fixed seat, the support seat being provided with a horizontally arranged rotating shaft and an electrode located on the rotating shaft, the rotating shaft being provided with a driven gear; the clamping body also comprises a driving block for connecting to the main shaft of the electric spark equipment, the driving block being provided with a rack meshing with the driven gear; the electrode comprises a fixed ring and a discharge ring arranged in a circumferential direction around the fixed ring, the discharge ring being located in front of the clamping opening, and the setting angle of the discharge ring in the circumferential direction of the fixed ring is not greater than 180 degrees.

[0005] In the above structure, the clamping port is used to clamp the processed parts, and the fixed seat serves as one of the conductors to supply power to the processed parts; in EDM machining, the most basic degree of freedom of the spindle of the EDM equipment is to move up and down to adjust the discharge gap, and its movement is used to control the up and down movement of the driving block, thereby controlling the driven gear through the rack to drive the horizontally arranged rotating shaft to reciprocate / swing, so that the discharge ring of the electrode approaches or moves away from the processed parts to realize discharge machining, and can effectively increase the axial size of the electrode on the rotating shaft; the support seat serves as another conductor to supply power to the electrode through the rotating shaft; since the cavity for EDM machining of the processed parts is a rotary cavity, in order to ensure that the discharge ring can smoothly approach the machining starting surface of the processed parts, the setting angle of the discharge ring in the circumferential direction of the fixed ring shall not be greater than 180 degrees.

[0006] The utility model is further configured such that an insulating isolation plate is provided between the fixing seat and the supporting seat.

[0007] In the above structure, the insulating isolation plate is used to insulate and isolate the fixing seat and the supporting seat to avoid discharge and sparking between the two.

[0008] The utility model is further configured that the driving block is provided with two or more sets of racks, the clamp bodies are provided in equal number to the racks, and the driven gear of each clamp body is meshed with the corresponding rack.

[0009] In the above structure, a plurality of clamping bodies can be driven simultaneously by one driving block to perform batch processing on workpieces.

[0010] The utility model is further configured that the driving blocks are multiple groups, which are arranged in an array on a horizontally placed fixed plate; the fixed plate is connected to the main shaft of the electric spark device; each driving block drives at least one group of driven gears of the clamping body.

[0011] In the above structure, multiple groups of drive blocks are provided and connected to the main shaft of the electric spark equipment through a fixed plate, so that the multiple groups of drive blocks can be lifted and lowered synchronously, a larger number of synchronous processing can be achieved, and higher production efficiency can be achieved.

[0012] The utility model is further configured that one side of the fixing seat is provided with a fixing hole opened into the clamping opening, and the fixing hole is provided with a fixing bolt threadedly matched therewith.

[0013] In the above structure, the processed part is fixed in the clamping opening by fixing bolts.

[0014] The utility model is further configured such that the support seat is in a "concave" shape, and the electrode is located in the concave.

[0015] In the above structure, the rotating shaft and the two sides of the notch of the support seat are hingedly supported, which is beneficial to improving the stability and accuracy of the electrode.

[0016] The utility model is further configured that the cross section of the discharge ring is funnel-shaped.

[0017] The utility model is further configured that the electrodes are multiple and stacked and arranged along the axial direction of the rotating shaft.

[0018] In the above structure, it corresponds to the rotary cavity of the processed part.

[0019] The utility model is further configured that the outer wall of the rotating shaft for installing the electrode position is provided with a positioning plane so that its cross section presents a "D" shape, and the center of the fixing ring is provided with a D-shaped hole adapted to the position.

[0020] In the above structure, circumferential fixation is provided between the rotating shaft and the electrode.

[0021] The beneficial effects of the utility model are as follows: the clamping port is used to clamp the processed parts, and the fixed seat serves as one of the conductors to supply power to the processed parts; in electrospark machining, the most basic degree of freedom of the spindle of the electrospark equipment is to move up and down to adjust the discharge gap, and its movement is used to control the up and down movement of the driving block, thereby controlling the driven gear through the rack to drive the horizontally arranged rotating shaft to reciprocate / swing, so that the discharge ring of the electrode is close to or away from the processed parts to realize discharge machining, and can effectively increase the axial size of the electrode on the rotating shaft; the support seat serves as another conductor to supply power to the electrode via the rotating shaft; since the cavity for discharge machining of the processed parts is a rotary cavity, in order to ensure that the discharge ring can smoothly approach the machining starting surface of the processed parts, the setting angle of the discharge ring in the circumferential direction of the fixed ring shall not be greater than 180 degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the first exploded three-dimensional structure of the utility model.

[0024] Figure 3 It is a schematic diagram of the second exploded three-dimensional structure of the utility model.

[0025] Figure 4 It is a schematic diagram of a third explosion stereoscopic structure of the utility model.

[0026] The meaning of the numbers in the figure are as follows: 1-clamping body; 10-fixing seat; 11-clamping opening; 12-fixing hole; 13-fixing bolt; 20-support seat; 201-recess; 21-rotating shaft; 211-positioning plane; 22-electrode; 221-fixing ring; 222-discharge ring; 23-driven gear; 30-driving block; 31-rack; 40-insulating isolation plate; a-processed part; b-rotating cavity. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] refer to Figures 1 to 4 ,like Figures 1 to 4A tooling positioning fixture for discharge rotary pulse machining shown in the figure includes a clamp body 1, wherein the clamp body 1 includes a fixed seat 10, and the fixed seat 10 is provided with a clamping opening 11; the clamp body 1 also includes a support seat 20 located on one side of the fixed seat 10, and the support seat 20 is provided with a horizontally arranged rotating shaft 21 and an electrode 22 located on the rotating shaft 21, and the rotating shaft 21 is provided with a driven gear 23; the clamp body 1 also includes a driving block 30 for connecting to a main shaft (not shown in the figure) of an electric spark device (not shown in the figure), and the driving block 30 is provided with a rack 31 meshing with the driven gear 23; the electrode 22 includes a fixed ring 221 and a discharge ring 222 arranged in a circumferential direction around the fixed ring 221, and the discharge ring 222 is located in front of the clamping opening 11, and the setting angle of the discharge ring 222 in the circumferential direction of the fixed ring 221 is not greater than 180 degrees.

[0029] In the above structure, the clamping port 11 is used to clamp the processed part a, and the fixed seat 10 serves as one of the conductors to supply power to the processed part a; in electrospark machining, the most basic degree of freedom of the spindle (not shown in the figure) of the electrospark equipment (not shown in the figure) is to move up and down to adjust the discharge gap, and its movement is used to control the driving block 30 to move up and down, thereby controlling the driven gear 23 through the rack 31 to drive the horizontally arranged rotating shaft 21 to reciprocate / swing, so that the discharge ring 222 of the electrode 22 approaches or moves away from the processed part a to achieve discharge machining, and can effectively increase the axial size of the electrode 22 on the rotating shaft 21; the support seat 20 serves as another conductor to supply power to the electrode 22 via the rotating shaft 21; since the cavity for discharge machining of the processed part a is a rotary cavity b, in order to ensure that the discharge ring 222 can smoothly approach the machining starting surface of the processed part a, the setting angle of the discharge ring 222 in the circumferential direction of the fixed ring 221 shall not be greater than 180 degrees.

[0030] In this embodiment, an insulating isolation plate 40 is provided between the fixing seat 10 and the supporting seat 20 .

[0031] In the above structure, the insulating isolation plate 40 insulates and isolates the fixing seat 10 and the supporting seat 20 to prevent discharge and sparking between the two.

[0032] In this embodiment, the driving block 30 is provided with two or more sets of racks 31 , the clamp bodies 1 and the racks 31 are arranged in equal numbers, and the driven gear 23 of each clamp body 1 is meshed with the corresponding rack 31 .

[0033] In the above structure, a plurality of clamp bodies 1 can be driven simultaneously by one driving block 30 to perform batch processing on workpieces.

[0034] In this embodiment, the driving blocks 30 are multiple groups, and are arranged in an array on a horizontally placed fixed plate (not shown in the figure); the fixed plate (not shown in the figure) is connected to the main shaft (not shown in the figure) of the electric spark equipment (not shown in the figure); each driving block 30 corresponds to driving at least one group of driven gears 23 of the clamp body 1.

[0035] In the above structure, multiple groups of drive blocks 30 are provided and connected to the main shaft (not shown in the figure) of the electric spark equipment (not shown in the figure) through a fixed plate (not shown in the figure), so as to realize the synchronous lifting and lowering of the multiple groups of drive blocks 30, realize a larger number of synchronous processing, and achieve higher production efficiency.

[0036] In this embodiment, a fixing hole 12 opened into the clamping opening 11 is provided on one side of the fixing seat 10, and a fixing bolt 13 threadably matched with the fixing hole 12 is provided on the fixing hole 12.

[0037] In the above structure, the workpiece a is fixed in the clamping opening 11 by means of fixing bolts 13 .

[0038] In this embodiment, the support base 20 is in a concave shape, and the electrode 22 is located in the concave portion 201 .

[0039] In the above structure, the rotating shaft 21 is hingedly supported on both sides of the notch 201 of the support seat 20 , which is beneficial to improving the stability and accuracy of the electrode 22 .

[0040] In this embodiment, the cross section of the discharge ring 222 is funnel-shaped.

[0041] In this embodiment, there are multiple electrodes 22 which are stacked and arranged along the axial direction of the rotating shaft 21 .

[0042] In the above structure, it corresponds to the rotary cavity b of the processed part a.

[0043] In this embodiment, the outer wall of the rotating shaft 21 for mounting the electrode 22 is provided with a positioning plane 211 so that its cross section is "D"-shaped, and the center of the fixing ring 221 is provided with a D-shaped hole adapted to the position.

[0044] In the above structure, circumferential fixation is provided between the rotating shaft 21 and the electrode 22 .

[0045] The beneficial effects of the utility model are as follows: the clamping port 11 is used to clamp the processed part a, and the fixed seat 10 is used as one of the conductors to supply power to the processed part a; in electrospark machining, the most basic degree of freedom of the spindle (not shown in the figure) of the electrospark equipment (not shown in the figure) is to move up and down to adjust the discharge gap, and its movement is used to control the driving block 30 to move up and down, so that the driven gear 23 is controlled by the rack 31 to drive the horizontally arranged rotating shaft 21 to reciprocate / swing, so that the discharge ring 222 of the electrode 22 is close to or away from the processed part a to realize discharge machining, and the axial size of the electrode 22 on the rotating shaft 21 can be effectively increased; the support seat 20 is used as another conductor to supply power to the electrode 22 through the rotating shaft 21; since the cavity for discharge machining of the processed part a is a rotary cavity b, in order to ensure that the discharge ring 222 can smoothly approach the machining starting surface of the processed part a, the setting angle of the discharge ring 222 in the circumferential direction of the fixed ring 221 shall not be greater than 180 degrees.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A tooling positioning fixture for discharge rotary pulse machining, characterized in that: It includes a clamping body, which includes a fixed seat, and the fixed seat is provided with a clamping opening; the clamping body also includes a support seat located on one side of the fixed seat, and the support seat is provided with a horizontally arranged rotating shaft and an electrode located on the rotating shaft, and the rotating shaft is provided with a driven gear; the clamping body also includes a driving block for connecting to the main shaft of the electric spark equipment, and the driving block is provided with a rack meshing with the driven gear; the electrode includes a fixed ring and a discharge ring arranged in the circumferential direction of the fixed ring, and the discharge ring is located in front of the clamping opening, and the setting angle of the discharge ring in the circumferential direction of the fixed ring is not greater than 180 degrees.

2. The tooling positioning fixture for electric discharge rotary pulse machining according to claim 1 is characterized in that: An insulating isolation plate is provided between the fixing seat and the supporting seat.

3. The tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1, characterized in that: The driving block is provided with two or more sets of racks, the clamp bodies are arranged in the same number as the racks, and the driven gear of each clamp body is meshed with the corresponding rack.

4. A tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1 or 3, characterized in that: The driving blocks are multiple groups, and are arranged in an array on a horizontally placed fixed plate; The fixing plate is connected to the main shaft of the electric spark device; each driving block drives at least one set of driven gears of the clamping body.

5. The tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1, characterized in that: A fixing hole opened into the clamping opening is provided on one side of the fixing seat, and a fixing bolt threadedly matched with the fixing hole is provided in the fixing hole.

6. The tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1, characterized in that: The support seat is in a "concave" shape, and the electrode is located in the concave.

7. The tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1, characterized in that: The cross section of the discharge ring is funnel-shaped.

8. A tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1 or 7, characterized in that: There are multiple electrodes, which are stacked and arranged along the axial direction of the rotating shaft.

9. The tooling positioning fixture for electrical discharge rotary pulse machining according to claim 1, characterized in that: The outer wall of the rotating shaft for mounting the electrode position is provided with a positioning plane so that its cross section presents a "D" shape, and the center of the fixing ring is provided with a D-shaped hole adapted to the position.

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