Clamp for mold electric spark machining

Abstract

The clamp comprises a main body, a rotating block, a plurality of fixed blocks, a sliding block, a clamping block and an elastic piece, the rotating block is rotationally arranged on the main body, the plurality of fixed blocks are all arranged on the rotating block, the sliding block is arranged on the fixed blocks in a sliding mode, the clamping block is arranged on the main body, and the elastic piece is arranged on the main body. The clamping block is arranged on the sliding block; the elastic piece is connected with the fixed block and the sliding block, the positioning mechanism comprises a positioning block and a first adjusting assembly, and the positioning block is arranged on the fixed block in a sliding mode and abuts against the sliding block; the first adjusting assembly is arranged on the fixing block and connected with the positioning block. The die has the effect of improving the stability of the die.

Description

Technical Field

[0001] The present application relates to the technical field of fixtures, and in particular to a fixture for electrospark machining of molds. Background Art

[0002] A fixture is a device for holding a workpiece.

[0003] At present, a Chinese patent with the authorization announcement number CN218799677U discloses a fixture for electrospark machining of molds, which relates to the technical field of fixtures. A fixture for electrospark machining of molds, including a lifting member, a fixed block is provided on the output end of the lifting member, and the lifting member is used to drive the fixed block to reciprocate in the vertical direction; a mounting pit is opened on the top of the fixed block, a rotating mechanism is installed in the mounting pit, a turntable is installed on the output end of the rotating mechanism, and the rotating mechanism is used to drive the turntable to rotate; a clamping mechanism for clamping the semi-cylindrical fixture is also provided on the top of the turntable; the clamping mechanism includes two clamping assemblies with the same structure, and the two clamping assemblies are arranged on the upper end face of the turntable and symmetrically distributed; the central area of ​​the upper end face of the turntable is the clamping area, each clamping assembly includes a fixed cylinder with an opening facing the clamping area, a sliding block is slidably provided in each fixed cylinder, and a compression spring is provided between each sliding block and the corresponding fixed cylinder, and the compression spring is used to reset the sliding block after moving away from the clamping area, and a vertical plate is provided at one end of each sliding block close to the clamping area.

[0004] When the turntable rotates, the clamping assembly and the mold on the turntable rotate; because the mold only relies on the force of the compression spring to prevent the mold from moving; therefore, when the mold rotates, there will be shaking, resulting in poor stability. Utility Model Content

[0005] In order to improve the stability of the mold, the present application provides a fixture for electrospark machining of the mold.

[0006] The present application provides a fixture for electrospark machining of molds, which adopts the following technical solution:

[0007] A fixture for electrospark machining of molds, comprising a main body, a rotating block, a fixed block, a sliding block, a clamping block and an elastic member, wherein the rotating block is rotatably arranged on the main body, a plurality of fixed blocks are provided, and the plurality of fixed blocks are all arranged on the rotating block, the sliding block is slidably arranged on the fixed block, and the clamping block is arranged on the sliding block; the elastic member connects the fixed block and the sliding block, and also comprises a positioning mechanism, the positioning mechanism comprises a positioning block and a first adjusting component, the positioning block is slidably arranged on the fixed block and pressed against the sliding block; the first adjusting component is arranged on the fixed block and connected to the positioning block.

[0008] By adopting the above technical solution, the mold is placed between two clamping blocks so that the two clamping blocks both contact the mold, and the elastic member will be deformed; then it is kept still for a period of time so that the deformation of the elastic members on the multiple fixed blocks remains stable, that is, the position of the mold on the rotating block is driven well; then the first adjustment component drives the positioning block to move so that the positioning block is pressed against the sliding block; in this way, when the rotating block rotates, the relative displacement of the mold relative to the rotating block is reduced, thereby improving the stability of the mold on the rotating block.

[0009] Optionally, the fixed block is provided with a sliding cavity, and the sliding block is slidably arranged in the sliding cavity; the fixed block is provided with a first groove connected to the sliding cavity, and the positioning block is slidably arranged in the first groove; the fixed block is provided with an adjustment threaded hole connected to the first groove, and the first adjustment component includes an adjusting screw and an adjusting knob, one end of the adjusting screw is rotatably connected to the positioning block, the other end of the adjusting screw passes through the adjusting threaded hole, and the adjusting screw is threadedly connected to the adjusting threaded hole; the adjusting knob is arranged at one end of the adjusting screw away from the positioning block.

[0010] By adopting the above technical solution, the adjusting knob is rotated, the adjusting knob drives the adjusting screw to rotate, and the adjusting screw drives the positioning block to slide in the first groove.

[0011] Optionally, the rotating block is provided with an adjusting device connected to the fixed block, the adjusting device includes an adjusting block and an adjusting mechanism, there are multiple adjusting blocks, the adjusting blocks correspond to the fixed blocks one by one, the multiple adjusting blocks are slidably set on the rotating block, and the fixed block is set on the adjusting block; the adjusting mechanism is set on the main body and the multiple adjusting blocks are connected to the adjusting mechanism.

[0012] By adopting the above technical solution, the adjusting block is driven to move by the adjusting mechanism, and the adjusting block drives the position of the fixed block to change; therefore, the arranged adjusting device can change the position of the fixed block, thereby improving the scope of application.

[0013] Optionally, two of the adjusting blocks and the fixed blocks are provided, and the adjusting mechanism includes a bidirectional screw, a slider and a second adjusting component. An adjusting cavity is provided on the rotating block, and two first through holes connected to the adjusting cavity are provided on the rotating block. Two sliders are provided, and the two sliders correspond to the two first through holes respectively. One end of the slider is in the adjusting cavity and the other end passes through the first through hole. The two sliders correspond to the two adjusting blocks one by one, and the end of the slider away from the adjusting cavity is connected to the adjusting block; the bidirectional screw is rotatably arranged in the adjusting cavity, the bidirectional screw passes through the two sliders, and the two sliders are respectively threadedly connected to the two ends of the bidirectional screw; the second adjusting component is arranged on the rotating block and connected to the bidirectional screw.

[0014] By adopting the above technical solution, the second adjusting component is adjusted, the second adjusting component drives the bidirectional screw to rotate, the bidirectional screw drives the two sliders to move toward or away from each other, the two sliders will drive the two adjusting blocks to move, and the two adjusting blocks drive the position of the fixed block to change.

[0015] Optionally, the second adjustment assembly includes an adjustment shaft, a first bevel gear, a second bevel gear, an adjustment plate and a positioning bolt, the adjustment shaft is rotatably arranged on the rotating block, the first bevel gear key is connected to the adjustment shaft, the second bevel gear key is connected to the bidirectional screw and meshes with the first bevel gear; the adjustment plate is arranged on the adjustment shaft, and the positioning bolt passes through the adjustment plate and is threadedly connected to the rotating block.

[0016] By adopting the above technical solution, the adjusting plate is rotated, and the adjusting shaft on the adjusting plate drives the first bevel gear to rotate, and the second bevel gear meshing with the first bevel gear will drive the bidirectional screw to rotate; when the position of the adjusting block is determined, the positioning bolt is passed through the adjusting plate and threadedly connected to the rotating block.

[0017] Optionally, the adjusting block is provided with a connecting mechanism connected to the fixed block, the connecting mechanism includes a dovetail block, a connecting block and a connecting bolt, the dovetail block is provided on the fixed block, and the adjusting block is provided with a dovetail groove slidingly connected to the dovetail block; the connecting block is provided on the fixed block, and the connecting bolt passes through the connecting block and is threadedly connected to the adjusting block.

[0018] By adopting the above technical solution, the dovetail block on the fixed block is slid into the dovetail groove. When the position of the fixed block is determined, the connecting bolt passes through the connecting block and is threadedly connected to the adjusting block to achieve installation of the fixed block on the adjusting block.

[0019] Optionally, a second groove is provided on the fixed block, a second through hole connected to the second groove is provided on the fixed block, a limiting mechanism is provided on the fixed block, the limiting mechanism includes a limiting block, a shift block and a first spring, the limiting block is slidably set in the second groove, and a limiting groove engaged with the limiting block is provided on the adjusting block; one end of the shift block is set on the limiting block and the other end passes through the second through hole; the first spring connects the limiting block and the fixed block.

[0020] By adopting the above technical solution, the operator pulls the shift block in the direction away from the adjusting block so that the limit block is located in the second groove, and the first spring is deformed; then the dovetail block is slid into the dovetail groove of the adjusting block; when a part of the fixed block contacts the adjusting block, the shift block is released, and the limit block contacts the adjusting block; when the limit block is aligned with the limit groove, the first spring restores its elastic deformation, and under the action of the spring elastic force, the limit block is engaged with the limit groove; then the connecting bolt is passed through the connecting block and the adjusting block for threaded connection; the provided limit mechanism can quickly determine the position where the fixed block is installed on the adjusting block, thereby saving time and improving efficiency.

[0021] Optionally, a rubber pad is provided on the clamping block.

[0022] By adopting the above technical solution, when the two clamping blocks clamp the mold, the rubber pad is directly pressed against the mold, thus reducing the phenomenon of damage to the mold caused by the clamping blocks when clamping the mold.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The positioning mechanism is set to reduce the relative displacement of the mold relative to the rotating block when the rotating block rotates, thereby improving the stability of the mold on the rotating block;

[0025] 2. The provided adjustment device can change the position of the fixed block, thereby increasing the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of the fixture for electrospark machining of molds in an embodiment of the present application;

[0027] Figure 2 This is a schematic diagram of the structure of the second adjustment component in the embodiment of the present application;

[0028] Figure 3 This is a schematic diagram of the structure of the connection mechanism in the embodiment of the present application;

[0029] Figure 4 This is a schematic diagram of the structure of the limiting mechanism in the embodiment of the present application;

[0030] Figure 5 It is a structural schematic diagram of the assembly mechanism in the embodiment of the present application.

[0031] Figure numerals: 11, main body; 12, rotating block; 121, adjusting cavity; 122, first through hole; 13, fixed block; 131, sliding cavity; 132, second through hole; 14, sliding block; 141, third groove; 15, clamping block; 16, elastic member; 2, positioning mechanism; 21, positioning block; 22, first adjusting component; 221, adjusting screw; 222, adjusting knob; 3, adjusting device; 31, adjusting block; 311, dovetail groove; 312, limit groove; 4, adjusting Mechanism; 41. bidirectional screw; 42. slider; 43. second adjusting assembly; 431. adjusting shaft; 432. first bevel gear; 433. second bevel gear; 434. adjusting plate; 5. connecting mechanism; 51. dovetail block; 52. connecting block; 53. connecting bolt; 6. limiting mechanism; 61. limiting block; 62. shifting block; 63. first spring; 7. rubber pad; 8. assembling mechanism; 81. assembling block; 82. assembling bolt; 91. scissor lift platform; 92. rotating motor. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-5 This application is described in further detail.

[0033] The embodiment of the present application discloses a fixture for electrospark machining of a mold.

[0034] refer to Figure 1 and Figure 2 A fixture for electrospark machining of molds includes a scissor-type lifting platform 91, a main body 11 is fixedly connected to the lifting platform of the scissor-type lifting platform 91, a rotating motor 92 is fixedly connected to the main body 11, a rotating block 12 is connected to the output shaft of the rotating motor 92, an adjusting device 3 is provided on the rotating block 12, two fixed blocks 13 are connected to the adjusting device, a sliding cavity 131 is provided at one end of the two fixed blocks 13 close to each other, a sliding block 14 is slidably connected in the sliding cavity 131, a clamping block 15 is provided on one end of the two sliding blocks 14 close to each other, and a rubber pad 7 is bonded to one end of the two clamping blocks 15 close to each other.

[0035] refer to Figure 2An adjusting cavity 121 is provided in the rotating block 12, and two first through holes 122 communicating with the adjusting cavity 121 are provided on the rotating block 12. The adjusting device 3 includes two adjusting blocks 31 slidably arranged on the rotating block 12. An adjusting mechanism 4 is provided on the rotating block 12, and the adjusting mechanism 4 includes two sliders 42, and the two sliders 42 correspond to the two adjusting blocks 31 one by one, one end of the slider 42 is fixedly connected to the adjusting block 31, and the end of the slider 42 away from the adjusting block 31 passes through the first through hole 122 and is located in the adjusting cavity 121; a bidirectional screw 41 is rotatably connected in the adjusting cavity 121, and the bidirectional screw 41 passes through the two sliders 42, and the two sliders 42 are respectively threadedly connected to the two ends of the bidirectional screw 41. A second adjusting component 43 is provided on the rotating block 12, and the second adjusting component 43 includes an adjusting shaft 431 rotatably connected to the rotating block 12, one end of the adjusting shaft 431 is located in the adjusting cavity 121, and a first bevel gear 432 is keyed to the adjusting shaft 431 located in the adjusting cavity 121, and a second bevel gear 433 meshing with the first bevel gear 432 is keyed to one end of the bidirectional screw 41; an adjusting plate 434 is fixedly connected to one end of the adjusting shaft 431 away from the first bevel gear 432, and the adjusting plate 434 contacts the side wall of the rotating block 12; a positioning bolt is provided on the adjusting plate 434, a third through hole is opened on the adjusting plate 434, and a first threaded hole is opened on the rotating block 12, and the positioning bolt passes through the third through hole and is threadedly connected to the first threaded hole.

[0036] Rotate the adjustment plate 434, the adjustment plate 434 drives the adjustment shaft 431 to rotate, the adjustment shaft 431 drives the first bevel gear 432 to rotate, the first bevel gear 432 drives the second bevel gear 433 to rotate, the second bevel gear 433 drives the bidirectional screw 41 to rotate, the bidirectional screw 41 drives the two sliders 42 to move toward or away from each other, and the two sliders 42 will drive the two adjustment blocks 31 to move.

[0037] refer to Figure 3 A dovetail groove 311 is provided at one end of the adjusting block 31 away from the slider 42, and a connecting mechanism 5 connected to the adjusting block 31 is provided on the fixed block 13, and the connecting mechanism 5 includes a dovetail block 51 fixedly connected to the fixed block 13, and the dovetail block 51 is slidably arranged with the dovetail groove 311; a connecting block 52 is fixedly connected to the side wall of the fixed block 13, and the connecting block 52 abuts against the adjusting block 31; a connecting bolt 53 is provided on the connecting block 52, and a fourth through hole is provided on the connecting block 52, and a second threaded hole is provided on the adjusting block 31, and the connecting bolt 53 passes through the fourth through hole and is threadedly connected with the second threaded hole.

[0038] The dovetail block 51 on the fixed block 13 is slid into the dovetail groove 311 of the adjusting block 31 . When the position of the fixed block 13 is determined, the connecting bolt 53 passes through the fourth through hole and is threadedly connected with the second threaded hole to fix the fixed block 13 on the adjusting block 31 .

[0039] refer to Figure 3 and Figure 4 The adjusting block 31 is provided with a limiting groove 312, the fixing block 13 is provided with a second groove, the fixing block 13 is provided with a second through hole 132 connected with the second groove, and the axis of the second through hole 132 is perpendicular to the axis of the second groove. The fixing block 13 is provided with a limiting mechanism 6, which includes a limiting block 61 which is slidably connected in the second groove and is engaged with the limiting groove 312; a shifting block 62 is vertically fixed on the limiting block 61 located in the second groove, and one end of the shifting block 62 away from the limiting block 61 passes through the second through hole 132; a first spring 63 is sleeved on the limiting block 61, one end of the first spring 63 is connected to the limiting block 61 and the other end is connected to the fixing block 13.

[0040] The operator first holds the shift lever and pulls the shift block 62 away from the adjustment block 31, so that the limit block 61 is located in the second groove, and the first spring 63 is deformed; then the dovetail block 51 is slid into the dovetail groove 311 of the adjustment block 31. When a part of the fixed block 13 contacts the adjustment block 31, the shift block 62 is released, and the limit block 61 contacts the adjustment block 31; when the limit block 61 is aligned with the limit groove 312, the first spring 63 restores its elastic deformation, and under the action of the spring elastic force, the limit block 61 is engaged with the limit groove 312; then the connecting bolt 53 is passed through the fourth through hole and threadedly connected with the second threaded hole.

[0041] refer to Figure 3 and Figure 5 , an elastic member 16 is arranged in the sliding cavity 131 of the fixed block 13, and the elastic member 16 is a second spring, one end of the second spring is connected to the fixed block 13 and the other end is connected to the sliding block 14. A first groove communicating with the sliding cavity 131 is provided on the fixed block 13, and an adjustment threaded hole communicating with the first groove is provided on the fixed block 13; a positioning mechanism 2 is arranged on the fixed block 13, and the positioning mechanism 2 includes a positioning block 21 slidingly connected in the first groove, and the positioning block 21 is pressed against the sliding block 14 located in the sliding cavity 131. A first adjustment component 22 is arranged on the fixed block 13, and the first adjustment component 22 includes an adjustment screw 221, one end of the adjustment screw 221 is rotatably connected to a side of the positioning block 21 away from the sliding block 14, and the end of the adjustment screw 221 away from the positioning block 21 passes through the adjustment threaded hole, and the end of the adjustment screw 221 away from the positioning block 21 is fixedly connected to an adjustment knob 222.

[0042] The adjusting knob 222 is rotated, and the adjusting knob 222 drives the adjusting screw 221 to rotate. Since the adjusting screw 221 is threadedly connected to the adjusting threaded hole, when the adjusting screw 221 rotates, the adjusting screw 221 drives the positioning block 21 to move in the first groove.

[0043] Reference 3 and Figure 5A third groove 141 is provided on the end of the sliding block 14 away from the second spring, and an assembling mechanism 8 is provided on the clamping block 15. The assembling mechanism 8 includes an assembling block 81 fixedly connected to the side of the clamping block 15 away from the rubber pad 7, and the assembling block 81 is engaged with the third groove 141; an assembling bolt 82 is provided on the sliding block 14, and a fifth through hole connected to the third groove 141 is provided on the sliding block 14, and a third threaded hole is provided on the assembling block 81, and the assembling bolt 82 passes through the fifth through hole and is threadedly connected to the third threaded hole.

[0044] The implementation principle of the clamp for electrospark machining of a mold in the embodiment of the present application is: firstly connect the fixing block 13 to the adjusting block 31, and then rotate the adjusting plate 434 to adjust the positions of the two adjusting blocks.

[0045] The mold is then placed between the two clamping blocks 15 so that the rubber pads 7 on the two clamping blocks 15 are pressed against the mold; then the mold is left to stand for a while, and then the adjusting knob 222 is rotated to make the positioning block 21 press against the sliding block 14 .

[0046] Finally, the rotating motor 92 is started, and the output shaft of the rotating motor 92 drives the rotating block 12 to rotate, and the adjusting block 31, the fixing block 13, the sliding block 14, the clamping block 15 and the mold on the rotating block 12 will rotate synchronously.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A fixture for electrospark machining of a mold, comprising a main body (11), a rotating block (12), a fixed block (13), a sliding block (14), a clamping block (15) and an elastic member (16), wherein the rotating block (12) is rotatably arranged on the main body (11), a plurality of the fixed blocks (13) are arranged, and the plurality of fixed blocks (13) are all arranged on the rotating block (12), the sliding block (14) is slidably arranged on the fixed block (13), and the clamping block (15) is arranged on the sliding block (14); the elastic member (16) connects the fixed block (13) and the sliding block (14), and is characterized in that: It also comprises a positioning mechanism (2), the positioning mechanism (2) comprising a positioning block (21) and a first adjustment component (22), the positioning block (21) being slidably disposed on the fixed block (13) and pressed against the sliding block (14); the first adjustment component (22) being disposed on the fixed block (13) and connected to the positioning block (21).

2. A fixture for die electrospark machining according to claim 1, characterized in that: The fixed block (13) is provided with a sliding cavity (131), and the sliding block (14) is slidably arranged in the sliding cavity (131); the fixed block (13) is provided with a first groove connected to the sliding cavity (131), and the positioning block (21) is slidably arranged in the first groove; the fixed block (13) is provided with an adjustment threaded hole connected to the first groove, and the first adjustment component (22) comprises an adjustment screw (221) and an adjustment knob (222), one end of the adjustment screw (221) is rotatably connected to the positioning block (21), the other end of the adjustment screw (221) passes through the adjustment threaded hole, and the adjustment screw (221) is threadedly connected to the adjustment threaded hole; the adjustment knob (222) is arranged at one end of the adjustment screw (221) away from the positioning block (21).

3. A fixture for die electrospark machining according to claim 1, characterized in that: The rotating block (12) is provided with an adjusting device (3) connected to the fixed block (13), the adjusting device (3) comprising an adjusting block (31) and an adjusting mechanism (4), a plurality of the adjusting blocks (31) are provided, the adjusting blocks (31) correspond to the fixed blocks (13) one by one, the plurality of the adjusting blocks (31) are all slidably arranged on the rotating block (12), and the fixed block (13) is arranged on the adjusting block (31); the adjusting mechanism (4) is arranged on the main body (11), and the plurality of the adjusting blocks (31) are all connected to the adjusting mechanism (4).

4. A fixture for die electrospark machining according to claim 3, characterized in that: The adjusting block (31) and the fixed block (13) are both provided with two, the adjusting mechanism (4) comprises a bidirectional screw (41), a slider (42) and a second adjusting component (43), the rotating block (12) is provided with an adjusting cavity (121), the rotating block (12) is provided with two first through holes (122) communicating with the adjusting cavity (121), the slider (42) is provided with two, the two sliders (42) respectively correspond to the two first through holes (122), one end of the slider (42) is in the adjusting cavity (121) and the other end passes through the The first through hole (122), the two sliders (42) correspond to the two adjustment blocks (31) respectively, and one end of the slider (42) away from the adjustment cavity (121) is connected to the adjustment block (31); the bidirectional screw (41) is rotatably arranged in the adjustment cavity (121), the bidirectional screw (41) passes through the two sliders (42), and the two sliders (42) are respectively threadedly connected to the two ends of the bidirectional screw (41); the second adjustment component (43) is arranged on the rotating block (12) and connected to the bidirectional screw (41).

5. A fixture for electrospark machining of molds according to claim 4, characterized in that: The second adjustment assembly (43) comprises an adjustment shaft (431), a first bevel gear (432), a second bevel gear (433), an adjustment plate (434) and a positioning bolt; the adjustment shaft (431) is rotatably arranged on the rotating block (12); the first bevel gear (432) is key-connected to the adjustment shaft (431); the second bevel gear (433) is key-connected to the bidirectional screw (41) and meshes with the first bevel gear (432); the adjustment plate (434) is arranged on the adjustment shaft (431); and the positioning bolt passes through the adjustment plate (434) and is threadedly connected to the rotating block (12).

6. A fixture for die electrospark machining according to claim 3, characterized in that: The adjusting block (31) is provided with a connecting mechanism (5) connected to the fixing block (13); the connecting mechanism (5) comprises a dovetail block (51), a connecting block (52) and a connecting bolt (53); the dovetail block (51) is provided on the fixing block (13); a dovetail groove (311) is provided on the adjusting block (31) and is slidably connected to the dovetail block (51); the connecting block (52) is provided on the fixing block (13); the connecting bolt (53) passes through the connecting block (52) and is threadedly connected to the adjusting block (31).

7. A fixture for electrospark machining of molds according to claim 6, characterized in that: The fixed block (13) is provided with a second groove, the fixed block (13) is provided with a second through hole (132) connected with the second groove, the fixed block (13) is provided with a limit mechanism (6), the limit mechanism (6) comprises a limit block (61), a shift block (62) and a first spring (63), the limit block (61) is slidably arranged in the second groove, the adjustment block (31) is provided with a limit groove (312) engaged with the limit block (61); one end of the shift block (62) is arranged on the limit block (61) and the other end passes through the second through hole (132); the first spring (63) connects the limit block (61) and the fixed block (13).

8. The fixture for electrospark machining of mold according to claim 1, characterized in that: A rubber pad (7) is provided on the clamping block (15).

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