Multi-section adjustable clamp for machining machine tool

Abstract

The invention belongs to the technical field of mechanical equipment, and discloses a multi-section adjustable clamp for a machining machine tool, which comprises a bottom plate, and further comprises an adjusting mechanism arranged on the outer wall of the top end of the bottom plate; the protection mechanism is arranged on the outer wall of the top end of the bottom plate; wherein the adjusting mechanism comprises a top plate, the outer wall of the top end of the top plate is slidably connected with a moving plate, and the outer wall of the moving plate is provided with a clamping block through a mounting mechanism; the protection mechanism comprises a protection cover; through cooperation of structures such as the rotating plate and the rotating block, the positions of the three sets of clamping blocks can be preliminarily adjusted by rotating the rotating plate and extruding the sliding rods through the inclined grooves, then the rotating plate is fixed, the rotating shaft is rotated, and the rotating block rotates to adjust the positions of the three sets of clamping blocks more accurately so as to clamp a workpiece; and therefore, the workpiece can be clamped and fixed without rotating the threaded rod for a long time, and more convenience and rapidness are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment, in particular to a multi-stage adjustable clamp for a mechanical processing machine tool. Background Art

[0002] A fixture for machining machine tools is a type of process equipment used to clamp workpieces and keep them in the correct position relative to the tool and machine tool processing movement during machining machine tool operations. It is usually composed of positioning elements, clamping devices, tool setting or guiding elements, connecting elements, clamping bodies, etc. It can ensure processing accuracy, improve production efficiency, expand the scope of machine tool use, and reduce the labor intensity of workers.

[0003] Since the workpieces that need to be processed by the machine tool have different sizes and specifications, when clamping workpieces of different sizes, the position of the fixture needs to be adjusted to adapt to workpieces of different specifications. In some existing technologies, when adjusting the position of the fixture, it is necessary to rotate the threaded rod for a long time to move the fixture. The whole process is relatively cumbersome, time-consuming and labor-intensive. Therefore, in view of the above problem, a multi-stage adjustable fixture for a machining machine tool is proposed. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a multi-stage adjustable fixture for a machining machine tool.

[0005] To achieve the above object, the present invention provides the following technical solution: a multi-stage adjustable fixture for a machining machine tool, comprising a base plate, and further comprising:

[0006] An adjustment mechanism, wherein the adjustment mechanism is arranged on the top outer wall of the bottom plate;

[0007] A protection mechanism, wherein the protection mechanism is arranged on the top outer wall of the bottom plate;

[0008] Wherein, the adjustment mechanism comprises a top plate, the top outer wall of the top plate is slidably connected with a moving plate, and the outer wall of the moving plate is provided with a clamping block through a mounting mechanism;

[0009] The protection mechanism comprises a protection cover, the outer wall of which is fixedly connected with a mounting block, and two groups of mounting blocks and protection covers are provided;

[0010] The mounting mechanism comprises a trapezoidal block, and a clamping block is slidably connected to the inner wall of the movable plate.

[0011] Preferably, the outer wall of the bottom plate is provided with a rotating block through a driving assembly, a slot is provided on the outer wall of the rotating block, a rotating plate is rotatably connected to the top outer wall of the rotating block, an inclined groove is provided on the outer wall of the rotating plate, an inner wall of the inclined groove contacts a sliding rod, a guide groove is provided on the outer wall of the top plate, and the outer wall of the rotating plate is elastically connected to the plug block through a connecting spring.

[0012] Preferably, the top plate is fixedly connected to the top outer wall of the bottom plate, the movable plate is fixedly connected to the top outer wall of the sliding rod, the sliding rod contacts the inner wall of the guide groove, the rotating block is rotatably connected to the top outer wall of the bottom plate, one end of the connecting spring is fixedly connected to the outer wall of the plug block, the other end of the connecting spring is fixedly connected to the outer wall of the rotating plate, the plug block is slidably connected to the outer wall of the rotating plate, and the plug block is clamped in the slot.

[0013] Preferably, the driving assembly includes a rotating shaft, the outer wall of the rotating shaft is threadedly connected to a threaded block, the bottom outer wall of the rotating block is fixedly connected to a sprocket A, the outer wall of the sprocket A is connected to a sprocket B via a chain transmission, the rotating shaft is fixedly connected to the top outer wall of the sprocket B, the sprocket A is rotatably connected to the inner wall of the base plate, and the rotating shaft is rotatably connected to the inner wall of the base plate.

[0014] Preferably, the top outer wall of one group of the mounting blocks is fixedly connected to a fixing block A, the inner wall of the fixing block A is elastically connected to a partition via a return spring, a groove is provided on the inner wall of the fixing block A, and the top outer wall of another group of the mounting blocks is fixedly connected to a fixing block B, the inner wall of the fixing block B is slidably connected to a slider, the inner wall of the slider is rotatably connected to a control rod, the inner wall of the control rod is slidably connected to two groups of wedge blocks, and the two groups of wedge blocks are elastically connected via a compression spring.

[0015] Preferably, one end of the return spring is fixedly connected to the outer wall of the partition, and the other end of the return spring is fixedly connected to the inner wall of the fixed block A, and the partition is slidably connected to the inner wall of the fixed block A.

[0016] Preferably, both ends of the compression spring are fixedly connected to the outer walls of the two groups of wedge blocks respectively, the wedge blocks are engaged with the grooves, and the mounting block is rotatably connected to the outer wall of the base plate.

[0017] Preferably, the trapezoidal block is elastically connected to the inner wall of the movable plate via a telescopic spring, the inner wall of the movable plate is slidably connected with a connecting rod, and the outer wall of the clamping block is provided with a slot.

[0018] Preferably, one end of the telescopic spring is fixedly connected to the inner wall of the movable plate, the other end of the telescopic spring is fixedly connected to the outer wall of the trapezoidal block, and the trapezoidal block is slidably connected to the inner wall of the movable plate.

[0019] Preferably, one end of the connecting rod is fixedly connected to the outer wall of the clamping block, the other end of the connecting rod is slidably connected to the outer wall of the trapezoidal block, and the clamping block contacts the inner wall of the movable plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a rotating plate and a rotating block, etc., so that the positions of the three groups of clamping blocks can be preliminarily adjusted by rotating the rotating plate and squeezing the sliding rod through the inclined groove. Then, the rotating plate is fixed and the rotating shaft is rotated to rotate the rotating block to adjust the positions of the three groups of clamping blocks more accurately to clamp the workpiece. Therefore, it is not necessary to rotate the threaded rod for a long time to clamp and fix the workpiece, which is more convenient and quick.

[0022] The present invention provides a protective cover and a fixing block A, etc., so that the limit between the two sets of mounting blocks can be released when in use, and the protective cover can be closed. When the device is not in use, the protective cover can be closed to protect the clamping block from being contaminated by dust or impurities.

[0023] The present invention arranges the cooperation of structures such as the trapezoidal block and the clamping block, and the clamping block can be fixed by clamping the clamping block with the clamping slot. The clamping state between the clamping block and the clamping slot can be released by pressing the trapezoidal block, so that the clamping block can be removed quickly and conveniently for maintenance or replacement, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure after the bottom plate, rotating block, rotating plate, top plate and moving plate of the present invention are decomposed;

[0027] Figure 4 For the present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0028] Figure 5 It is a schematic diagram of the structure of sprocket A and sprocket B of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the movable plate section and the disassembled clamping block of the present invention;

[0030] Figure 7 This is a schematic diagram of the structure of the protective mechanism and the bottom plate after being decomposed;

[0031] Figure 8 For the present invention Figure 7 The enlarged structural diagram of part B is shown in the figure.

[0032] In the figure: 1, bottom plate; 2, adjustment mechanism; 201, plug block; 202, top plate; 203, guide groove; 204, slide rod; 205, moving plate; 206, rotating plate; 207, inclined groove; 208, rotating block; 209, slot; 210, connecting spring; 2001, rotating shaft; 2002, threaded block; 2003, sprocket A; 2004, chain; 2005, sprocket B; 3, clamping block; 4, protective mechanism; 401, mounting block; 402, protective cover; 403, fixed block A; 404, return spring; 405, partition; 406, groove; 407, fixed block B; 408, slider; 409, control rod; 410, compression spring; 411, wedge block; 501, trapezoidal block; 502, telescopic spring; 503, connecting rod; 504, clamping block; 6, clamping slot. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, the present invention provides a multi-stage adjustable fixture for a machining machine tool, comprising a base plate 1, and further comprising:

[0035] The adjusting mechanism 2 is arranged on the top outer wall of the bottom plate 1;

[0036] A protection mechanism 4, which is arranged on the top outer wall of the bottom plate 1;

[0037] The adjusting mechanism 2 includes a top plate 202, a top outer wall of the top plate 202 is slidably connected with a moving plate 205, and a clamping block 3 is arranged on the outer wall of the moving plate 205 through a mounting mechanism;

[0038] The protection mechanism 4 includes a protection cover 402, the outer wall of the protection cover 402 is fixedly connected with a mounting block 401, and two groups of mounting blocks 401 and protection cover 402 are provided;

[0039] The mounting mechanism includes a trapezoidal block 501 , and a clamping block 504 is slidably connected to the inner wall of the moving plate 205 .

[0040] By adopting the above scheme: the base plate 1 can be fixed on the machine tool, and the distance between the three groups of clamping blocks 3 can be adjusted by the adjusting mechanism 2 to clamp and fix workpieces of different sizes; the clamping blocks 3 can be conveniently and quickly disassembled and installed through the installation mechanism for maintenance or replacement; when the clamp is not in use, the protective mechanism 4 can be closed to protect it, so as to prevent the accumulation of impurities such as dust from polluting the clamping blocks 3 and causing other effects.

[0041] like Figures 2 to 4 As shown, the outer wall of the bottom plate 1 is provided with a rotating block 208 through a driving assembly, a slot 209 is provided on the outer wall of the rotating block 208, the top outer wall of the rotating block 208 is rotatably connected with a rotating plate 206, an inclined groove 207 is provided on the outer wall of the rotating plate 206, the inner wall of the inclined groove 207 contacts the slide bar 204, a guide groove 203 is provided on the outer wall of the top plate 202, and the outer wall of the rotating plate 206 is elastically connected with the plug block 201 through a connecting spring 210.

[0042] The above scheme is adopted: three groups of inclined grooves 207 and guide grooves 203 are provided, and three groups of clamping blocks 3 and sliding rods 204 are also provided, corresponding to the inclined grooves 207 and guide grooves 203; the top plate 202 is fixed to the top outer wall of the bottom plate 1 and cannot move, while the rotating plate 206 and the rotating block 208 can both rotate, and the rotating plate 206 can be engaged with the slot 209 on the rotating block 208 through the plug block 201, so that the rotating plate 206 and the rotating block 208 can rotate synchronously; there are multiple groups of slots 209, when the plug block 201 is out of contact with the slot 209, and the rotating block 208 is kept in a fixed state by the driving assembly, the rotating plate 206 can rotate alone on the rotating block 208.

[0043] like Figures 2 to 4 As shown, the top plate 202 is fixedly connected to the top outer wall of the bottom plate 1, the movable plate 205 is fixedly connected to the top outer wall of the slide bar 204, the slide bar 204 contacts the inner wall of the guide groove 203, the rotating block 208 is rotatably connected to the top outer wall of the bottom plate 1, one end of the connecting spring 210 is fixedly connected to the outer wall of the plug block 201, the other end of the connecting spring 210 is fixedly connected to the outer wall of the rotating plate 206, the plug block 201 is slidably connected to the outer wall of the rotating plate 206, and the plug block 201 is snap-fitted into the slot 209.

[0044] The above scheme is adopted: since the top plate 202 is fixed, when the rotating plate 206 rotates, the inclined groove 207 will squeeze the slide bar 204 to make it move, and under the guiding action of the guide groove 203, the slide bar 204 will move along the inner wall of the guide groove 203, driving the corresponding movable plate 205 to move to the middle or outside at the same time, so that the position of the three groups of clamping blocks 3 can be adjusted according to the specific size specifications of the workpiece; under normal conditions, the plug block 201 is always engaged with the slot 209 due to the elastic force of the connecting spring 210. When the plug block 201 is pulled outward and disengaged from the slot 209, the limit between the rotating plate 206 and the rotating block 208 can be released to rotate the rotating plate 206; the driving component can fix the rotating block 208, and can also drive the rotating block 208 to rotate through the driving component; after rotating the rotating plate 206, the position of the three groups of clamping blocks 3 can be preliminarily fixed by engaging the plug block 201 with the slot 209, and by rotating the driving component, the clamping block 3 can be further driven to perform fine adjustment, so as to clamp the workpiece more accurately.

[0045] like Figure 5 As shown, the driving assembly includes a rotating shaft 2001, the outer wall of the rotating shaft 2001 is threadedly connected to a threaded block 2002, the bottom outer wall of the rotating block 208 is fixedly connected to a sprocket A2003, the outer wall of the sprocket A2003 is connected to a sprocket B2005 through a chain 2004, the rotating shaft 2001 is fixedly connected to the top outer wall of the sprocket B2005, the sprocket A2003 is rotatably connected to the inner wall of the base plate 1, and the rotating shaft 2001 is rotatably connected to the inner wall of the base plate 1.

[0046] The above scheme is adopted: the outer wall of the rotating shaft 2001 is provided with an external thread, and the threaded block 2002 is provided with an internal thread. When the threaded block 2002 rotates downward and contacts the surface of the bottom plate 1, it cannot continue to rotate and can limit the rotating shaft 2001. On the contrary, the threaded block 2002 rotates upward to release the limit of the rotating shaft 2001 and rotate the rotating shaft 2001; when the rotating shaft 2001 rotates, the sprocket B2005 is driven to rotate, and the sprocket A2003 is driven to rotate synchronously through the chain 2004 transmission, so that the rotating block 208 and the rotating plate 206 can be rotated; the sprocket A2003, the chain 2004 and the sprocket B2005 are all prior arts. By rotating the sprocket A2003, the rotating block 208 and the rotating plate 206, the position of the clamping block 3 can be further adjusted, the clamping accuracy is improved, and the operation is also relatively convenient, and the position of the clamping block 3 can be adjusted by rotating the threaded rod for a long time.

[0047] like Figures 7 and 8 As shown, the top outer wall of one group of mounting blocks 401 is fixedly connected to a fixing block A403, the inner wall of the fixing block A403 is elastically connected to a partition plate 405 via a reset spring 404, a groove 406 is provided on the inner wall of the fixing block A403, the top outer wall of another group of mounting blocks 401 is fixedly connected to a fixing block B407, the inner wall of the fixing block B407 is slidably connected to a slider 408, the inner wall of the slider 408 is rotatably connected to a control rod 409, the inner wall of the control rod 409 is slidably connected to two groups of wedge blocks 411, and the two groups of wedge blocks 411 are elastically connected via a compression spring 410.

[0048] The above scheme is adopted: the protective cover 402 in the protective mechanism 4 is provided with two groups, and the outer wall of each group of protective covers 402 is fixedly connected with a mounting block 401. The protective cover 402 is made of carbon fiber composite material, which not only ensures hardness, but also has a foldable effect. When the workpiece needs to be clamped, the protective cover 402 can be flipped down and folded, and the protective cover 402 can be closed when not in use; the mounting block 401 is hinged to the outer wall of the base plate 1, and rotating the mounting block 401 can drive the protective cover 402 to be opened or closed; after the protective cover 402 is closed, the wedge block 411 of the control rod 409 in the fixed block B407 will be engaged with the groove 406 in the fixed block A403, and remain fixed under the resistance of the reset spring 404 and the partition 405, so that the two groups of mounting blocks 401 can be fixed and kept in a closed state; the slider 408 can move laterally in the inner wall of the fixed block B407 but cannot rotate, and the control rod 409 can rotate in the inner wall of the fixed block B407 but cannot move laterally.

[0049] like Figures 7 and 8 As shown, one end of the return spring 404 is fixedly connected to the outer wall of the partition 405, and the other end of the return spring 404 is fixedly connected to the inner wall of the fixed block A403, and the partition 405 is slidingly connected to the inner wall of the fixed block A403; the two ends of the compression spring 410 are respectively fixedly connected to the outer walls of the two groups of wedge blocks 411, the wedge blocks 411 are clamped with the grooves 406, and the mounting block 401 is rotatably connected to the outer wall of the base plate 1.

[0050] The above scheme is adopted: when it is necessary to open the protective cover 402, the control rod 409 can be pushed toward the side of the fixed block A403, driving the slider 408 to move synchronously, and the two groups of wedge blocks 411 are squeezed by the inner wall of the fixed block A403 and move to the inner wall of the control rod 409, squeezing the partition 405 and compressing the return spring 404; then the control rod 409 is rotated to make the positions of the wedge blocks 411 and the grooves 406 intersect, so as to release the fixing effect of the control rod 409 on the fixed blocks A403 and the fixed blocks B407, and the two groups of mounting blocks 401 are separated to unfold the protective cover 402.

[0051] like Figure 6 As shown, the trapezoidal block 501 is elastically connected to the inner wall of the movable plate 205 through the telescopic spring 502, the inner wall of the movable plate 205 is slidably connected with the connecting rod 503, and the outer wall of the clamping block 3 is provided with a card slot 6; one end of the telescopic spring 502 is fixedly connected to the inner wall of the movable plate 205, and the other end of the telescopic spring 502 is fixedly connected to the outer wall of the trapezoidal block 501, and the trapezoidal block 501 is slidably connected to the inner wall of the movable plate 205; one end of the connecting rod 503 is fixedly connected to the outer wall of the card block 504, and the other end of the connecting rod 503 is slidably connected to the outer wall of the trapezoidal block 501, and the clamping block 3 contacts the inner wall of the movable plate 205.

[0052] By adopting the above scheme: the slot 6 of the clamping block 3 can be engaged with the clamping block 504, so that the clamping block 3 is installed and fixed in the inner wall of the movable plate 205; under normal conditions, the telescopic spring 502 keeps the trapezoidal block 501 in a certain position due to its own elastic force. At this time, the two sets of connecting rods 503 are in contact with the short side inclined surfaces of the trapezoidal block 501, and when the trapezoidal block 501 is pressed, the inclined surfaces at both ends of the trapezoidal block 501 will push the connecting rod 503. Since the connecting rod 503 can only move horizontally, it can drive the clamping block 504 to move to both sides and break away from the slot 6, so that the clamping block 3 can be quickly removed for replacement; during installation, the trapezoidal block 501 is also pressed, the clamping block 3 is placed in the movable plate 205, and the trapezoidal block 501 is reset by the elastic force of the telescopic spring 502, and the two sets of connecting rods 503 and the clamping block 504 are reset synchronously to complete the clamping and fixing.

[0053] The working principle and use process of the present invention:

[0054] Fix the base plate 1 on the machine tool. At this time, the clamp is in the protective state. Push the control rod 409 to the side of the fixed block A403, so that the two groups of wedge blocks 411 are squeezed by the inner wall of the fixed block A403 and move to the inner wall of the control rod 409, while squeezing the partition 405 and compressing the return spring 404; then rotate the control rod 409 to make the positions of the wedge blocks 411 and the grooves 406 intersect, release the fixing effect of the control rod 409 on the fixed blocks A403 and the fixed blocks B407, separate the two groups of mounting blocks 401, and thus deploy the protective cover 402.

[0055] According to the size specifications of the workpiece to be processed, the distance between the three groups of clamping blocks 3 is adjusted; first, the insert block 201 is pulled outward to make it disengage from the slot 209 on the rotating block 208, and the limit between the rotating plate 206 and the rotating block 208 is released, and then the rotating plate 206 is rotated, and the inclined groove 207 on its outer wall will squeeze the slide bar 204. Under the guidance of the guide groove 203, the slide bar 204 will drive the movable plate 205 to move toward the middle or outside at the same time, thereby realizing the preliminary adjustment of the positions of the three groups of clamping blocks 3; after the adjustment is completed, the insert block 201 is released, and under the elastic force of the connecting spring 210, the insert block 201 is engaged with the slot 209, and the positions of the three groups of clamping blocks 3 are preliminarily fixed.

[0056] Then, rotate the threaded block 2002 to disengage it from the base plate 1, and rotate the rotating shaft 2001 to drive the sprocket B2005 to rotate, and drive the sprocket A2003 to rotate synchronously through the chain 2004, so that the rotating block 208 and the rotating plate 206 rotate, and further fine-tune the position of the clamping block 3; after completion, rotate the threaded block 2002 downward to make it contact with the surface of the base plate 1, so as to limit the rotating shaft 2001 and accurately clamp the workpiece.

[0057] After the workpiece is clamped, the machining operation is carried out. When the machining is completed or the fixture is not in use temporarily, the protective mechanism 4 is closed; the mounting block 401 is rotated to drive the protective cover 402 to close. After the protective cover 402 is closed, the wedge block 411 of the control rod 409 in the fixed block B407 will engage with the groove 406 in the fixed block A403, and remain fixed under the resistance of the return spring 404 and the partition 405. The two sets of mounting blocks 401 are fixed to keep the protective cover 402 in a closed state to prevent dust and other impurities from accumulating and polluting the clamping block 3.

[0058] If the clamping block 3 needs maintenance or replacement, the trapezoidal block 501 can be pressed, and the inclined surfaces at both ends of the trapezoidal block 501 can push the connecting rod 503, driving the clamping block 504 to move to both sides, so that the clamping block 504 is out of contact with the clamping groove 6 on the outer wall of the clamping block 3, and the old clamping block 3 can be quickly removed; when installing a new clamping block 3, the trapezoidal block 501 is also pressed, and the new clamping block 3 is placed in the movable plate 205, and the trapezoidal block 501 is released. Under the elastic force of the telescopic spring 502, the trapezoidal block 501 is reset, and the two sets of connecting rods 503 and the clamping block 504 are reset synchronously, and the clamping block 504 is engaged with the clamping groove 6, completing the installation and fixation of the clamping block 3.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] 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 multi-stage adjustable fixture for a machining machine tool, comprising a base plate (1), characterized in that: Also includes: An adjusting mechanism (2), wherein the adjusting mechanism (2) is arranged on the top outer wall of the bottom plate (1); A protection mechanism (4), wherein the protection mechanism (4) is arranged on the top outer wall of the bottom plate (1); The adjusting mechanism (2) comprises a top plate (202), the top outer wall of the top plate (202) is slidably connected to a movable plate (205), and the outer wall of the movable plate (205) is provided with a clamping block (3) via a mounting mechanism; The protection mechanism (4) comprises a protection cover (402), the outer wall of the protection cover (402) is fixedly connected with a mounting block (401), and the mounting block (401) and the protection cover (402) are both provided in two groups; The mounting mechanism comprises a trapezoidal block (501), and a clamping block (504) is slidably connected to the inner wall of the movable plate (205).

2. The multi-stage adjustable clamp for machining machine tools according to claim 1, characterized in that: The outer wall of the bottom plate (1) is provided with a rotating block (208) through a driving assembly, the outer wall of the rotating block (208) is provided with a slot (209), the top outer wall of the rotating block (208) is rotatably connected to a rotating plate (206), the outer wall of the rotating plate (206) is provided with an inclined groove (207), the inner wall of the inclined groove (207) contacts a sliding rod (204), the outer wall of the top plate (202) is provided with a guide groove (203), and the outer wall of the rotating plate (206) is elastically connected to the plug block (201) through a connecting spring (210).

3. The multi-stage adjustable clamp for machining machine tools according to claim 2, characterized in that: The top plate (202) is fixedly connected to the top outer wall of the bottom plate (1), the movable plate (205) is fixedly connected to the top outer wall of the sliding rod (204), the sliding rod (204) is in contact with the inner wall of the guide groove (203), the rotating block (208) is rotatably connected to the top outer wall of the bottom plate (1), one end of the connecting spring (210) is fixedly connected to the outer wall of the plug block (201), the other end of the connecting spring (210) is fixedly connected to the outer wall of the rotating plate (206), the plug block (201) is slidably connected to the outer wall of the rotating plate (206), and the plug block (201) is snap-fitted to the slot (209).

4. The multi-stage adjustable clamp for machining machine tools according to claim 2, characterized in that: The driving assembly comprises a rotating shaft (2001), the outer wall of the rotating shaft (2001) is threadedly connected to a threaded block (2002), the outer wall of the bottom end of the rotating block (208) is fixedly connected to a sprocket A (2003), the outer wall of the sprocket A (2003) is connected to a sprocket B (2005) via a chain (2004), the rotating shaft (2001) is fixedly connected to the top outer wall of the sprocket B (2005), the sprocket A (2003) is rotatably connected to the inner wall of the bottom plate (1), and the rotating shaft (2001) is rotatably connected to the inner wall of the bottom plate (1).

5. The multi-stage adjustable clamp for a machining machine tool according to claim 1, characterized in that: The top outer wall of one group of the mounting blocks (401) is fixedly connected to a fixing block A (403), the inner wall of the fixing block A (403) is elastically connected to a partition (405) via a return spring (404), and a groove (406) is provided on the inner wall of the fixing block A (403). The top outer wall of another group of the mounting blocks (401) is fixedly connected to a fixing block B (407), the inner wall of the fixing block B (407) is slidably connected to a slider (408), the inner wall of the slider (408) is rotatably connected to a control rod (409), the inner wall of the control rod (409) is slidably connected to two groups of wedge blocks (411), and the two groups of wedge blocks (411) are elastically connected via a compression spring (410).

6. The multi-stage adjustable clamp for a machining machine tool according to claim 5, characterized in that: One end of the return spring (404) is fixedly connected to the outer wall of the partition (405), and the other end of the return spring (404) is fixedly connected to the inner wall of the fixed block A (403). The partition (405) is slidably connected to the inner wall of the fixed block A (403).

7. The multi-stage adjustable clamp for a machining machine tool according to claim 5, characterized in that: The two ends of the compression spring (410) are respectively fixedly connected to the outer walls of the two groups of wedge blocks (411); the wedge blocks (411) are clamped with the grooves (406); and the mounting block (401) is rotatably connected to the outer wall of the base plate (1).

8. The multi-stage adjustable clamp for a machining machine tool according to claim 1, characterized in that: The trapezoidal block (501) is elastically connected to the inner wall of the movable plate (205) via a telescopic spring (502); the inner wall of the movable plate (205) is slidably connected to a connecting rod (503); and a clamping groove (6) is provided on the outer wall of the clamping block (3).

9. The multi-stage adjustable clamp for a machining machine tool according to claim 8, characterized in that: One end of the telescopic spring (502) is fixedly connected to the inner wall of the movable plate (205), the other end of the telescopic spring (502) is fixedly connected to the outer wall of the trapezoidal block (501), and the trapezoidal block (501) is slidably connected to the inner wall of the movable plate (205).

10. The multi-stage adjustable clamp for a machining machine tool according to claim 8, characterized in that: One end of the connecting rod (503) is fixedly connected to the outer wall of the clamping block (504), the other end of the connecting rod (503) is slidably connected to the outer wall of the trapezoidal block (501), and the clamping block (3) is in contact with the inner wall of the movable plate (205).

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