Adjustable clamp and adjusting method thereof

Abstract

The invention provides an adjustable clamp and an adjusting method thereof, and belongs to the technical field of clamps, the adjustable clamp comprises a base disc, a rotating unit and a translation unit, the base disc is provided with an adjusting cavity, the center of the adjusting cavity is fixedly connected with a connecting column, and the axis of the connecting column is parallel to the axis of the base disc; a plurality of reversing ribs are slidably connected to the peripheral face of the connecting column in the circumferential direction of the connecting column, one ends of the reversing ribs are connected to the base disc and slide in the circumferential direction of the base disc, the reversing ribs are further slidably connected with supporting ribs in the length direction of the reversing ribs, and the supporting ribs are connected to the sides, facing the opening of the adjusting cavity, of the reversing ribs; the rotating unit is connected to the reversing rib and used for driving the reversing rib to rotate around the connecting column. The translation unit is connected to the supporting rib and used for driving the supporting rib to slide. The technical problem that a clamp is low in applicability is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of clamps, and in particular relates to an adjustable clamp and an adjustment method thereof. Background Art

[0002] A fixture usually refers to a device used to install and fix parts and workpieces in the mechanical manufacturing process, keep them in the correct position, and ensure that the position of the parts does not change during the processing.

[0003] For example, in CNC lathe processing, the fixture is the key link between the machine tool and the workpiece, ensuring the stability and accuracy of the workpiece during the processing.

[0004] The application of CNC lathes is becoming more and more extensive, and the requirements for fixtures are becoming higher and higher. The shapes of workpieces that can be fixed by the fixtures on existing CNC lathes are often relatively simple, so there is a defect that the applicability of CNC lathe fixtures is low. Summary of the invention

[0005] The embodiment of the present invention provides an adjustable fixture of a CNC lathe and an adjustment method thereof, aiming to solve the technical problem of low applicability of the fixture of the CNC lathe.

[0006] In a first aspect, an embodiment of the present invention provides an adjustable clamp, comprising: A base plate is provided with an adjustment cavity, a connecting column is fixedly connected to the center of the adjustment cavity, the axis of the connecting column is parallel to the axis of the base plate, the outer peripheral surface of the connecting column is slidably connected to a plurality of reversing ribs along its own circumferential direction, one end of the reversing rib is connected to the base plate and slides along the circumferential direction of the base plate, the reversing rib is also slidably connected to a supporting rib along its own length direction, and the supporting rib is connected to the side of the reversing rib facing the opening of the adjustment cavity; a rotating unit connected to the reversing rib and used for driving the reversing rib to rotate around the connecting column; and The translation unit is connected to the support rib and is used to drive the support rib to slide.

[0007] In combination with the first aspect, in a possible implementation manner, an annular driving cavity is formed on the inner wall of the base plate; The rotating unit comprises: An inner gear ring, fixedly connected to the driving cavity; a plurality of gears corresponding to the plurality of the reversing ribs one by one, the gears being rotatably connected to the reversing ribs around their own central axes, the gears being slidably connected to the reversing ribs, the gears sliding along the length direction of the reversing ribs, the gears having a first working position meshing with the inner gear ring and a second working position separated from the inner gear ring; and A plurality of first driving members corresponding to the plurality of gears one by one, the first driving members being drivingly connected to the gears; Wherein, when the gear is located at the first working position, the reversing rib and the base plate are relatively fixed; when the gear is located at the second working position, relative displacement can occur between the reversing rib and the base plate.

[0008] In combination with the first aspect, in a possible implementation, a storage cavity communicating with the outside is opened at one end of the reversing rib away from the connecting column, a connecting frame is slidably connected in the storage cavity, the connecting frame slides along the length direction of the reversing rib, the connecting frame has a pressure-bearing portion, and the gear is rotatably connected to the connecting frame around its own central axis; The receiving cavity is provided with a position adjusting member and a reset member in sequence along the length direction of the reversing rib, and the pressure receiving portion is provided between the position adjusting member and the reset member; The adjusting member presses the pressure-bearing portion, so that the gear is in the first working position; the adjusting member does not press the pressure-bearing portion, and the resetting member makes the gear in the second working position.

[0009] In combination with the first aspect, in a possible implementation, the positioning member and the reset member are both slidably connected in the storage cavity, the positioning member and the reset member slide in a direction parallel to the axis of the base plate, and the sliding directions of the positioning member and the reset member are opposite, and the first inclined surface and the second inclined surface are respectively provided on the side where the positioning member and the reset member are close to each other, and the first inclined surface and the second inclined surface are both in contact with the pressure-bearing portion.

[0010] In combination with the first aspect, in a possible implementation, a second driving member is installed on the reversing rib, and the second driving member is transmission-connected to an adjusting roller, a first telescopic member is hinged between one end of the adjusting roller and the positioning member, a hinge axis between the first telescopic member and the positioning member is perpendicular to the sliding direction of the positioning member, and the first telescopic member is telescopic along the axial direction of the adjusting roller, a second telescopic member is hinged between the other end of the adjusting roller and the reset member, a hinge axis between the second telescopic member and the reset member is perpendicular to the sliding direction of the reset member, and the second telescopic member is telescopic along the axial direction of the adjusting roller.

[0011] In combination with the first aspect, in a possible implementation, a connecting cavity is formed in an annular shape on the inner wall of the base plate, a first annular electromagnet and a second annular electromagnet are fixedly connected to the inner wall of the connecting cavity of the base plate, the first annular electromagnet and the second annular electromagnet are arranged opposite to each other, a fixing ring is provided between the first annular electromagnet and the second annular electromagnet, the fixing ring is fixed to the base plate, a surface of the fixing ring is formed in an annular shape with connecting holes distributed at intervals, and the connecting holes are formed along the radial direction of the base plate; The reversing rib is fixedly connected with a connecting piece, an activity space is formed between the first ring-shaped electromagnet and the fixed ring, one end of the connecting piece away from the reversing rib extends into the activity space, the connecting piece is slidably connected with a connecting pin plug-fitted with the connecting hole, and the connecting pin slides along the radial direction of the base plate; Wherein, when the gear is located at the first working position, the first ring-shaped electromagnet is in a powered state, and the second ring-shaped electromagnet is in a non-powered state, and the first ring-shaped electromagnet generates suction, so that the connecting pin is disengaged from the connecting hole; when the gear is located at the second working position, the first ring-shaped electromagnet is in a non-powered state, and the second ring-shaped electromagnet is in a powered state, and the second ring-shaped electromagnet generates suction, so that the connecting pin is inserted into the connecting hole.

[0012] In combination with the first aspect, in a possible implementation, the reversing rib includes a first section detachably connected to the base plate, and a tail section detachably connected to the connecting column, and also includes an intermediate section rotatably connected between the first section and the tail section, the first section uses the axial direction of the connecting column as a rotation axis, the intermediate section rotates around its own central axis, and a limiting rod is fixedly connected between the first section and the tail section; The translation unit is provided with a plurality of units, and the translation units correspond to the reversing ribs one by one. The translation unit includes: A mounting seat, which is sleeved on the outer circumference of the middle section and threadedly connected to the middle section, and the limiting rod is slidably disposed through the mounting seat; and The third driving member is installed on the first section or the last section and is drivingly connected with the middle section.

[0013] In combination with the first aspect, in a possible implementation, a connecting buckle is provided on the outer periphery of the connecting column, and the connecting buckle rotates with the axial direction of the connecting column as the rotation axis, and the connecting buckle is detachably connected to the tail section and the connecting column respectively.

[0014] In combination with the first aspect, in a possible implementation manner, the support rib is detachably connected to the mounting seat.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application realizes radial and circumferential position adjustment of the support ribs through combined control of the rotation unit and the translation unit, can adapt to the clamping requirements of workpieces with complex contours such as special-shaped parts and curved parts, and improves the applicability of the fixture; at the same time, the position of the support ribs can be adjusted according to the optimal clamping point of the workpiece, thereby improving the stability of the workpiece clamping.

[0016] In a second aspect, an embodiment of the present invention further provides a method for adjusting a clamp, the steps of which are as follows: S10, determining the number of the reversing ribs and the shape of the supporting ribs according to the shape of the workpiece, and installing the reversing ribs and the supporting ribs; S20, determining the best supporting point for the support rib to clamp the workpiece according to the shape of the workpiece; S30. According to the optimal supporting point, the position of the supporting rib is adjusted by the rotating unit and the translating unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an adjustable clamp according to an embodiment of the present invention; Figure 2 A partial cross-sectional view of a gear switching mode between a first working position and a second working position used in an embodiment of the present invention; Figure 3 A partial cross-sectional view of the connection method between the reversing rib and the connecting column and the translation unit structure adopted in the embodiment of the present invention; Figure 4 It is a partial cross-sectional view of the connection method between the reversing rib and the base plate adopted in an embodiment of the present invention.

[0018] Description of reference numerals: 10. base plate; 101. adjustment cavity; 102. connection column; 1021. connection buckle; 10211. socket; 103. drive cavity; 104. connection cavity; 105. first ring-shaped electromagnet; 106. second ring-shaped electromagnet; 107. fixing ring; 1071. connection hole; 20. Rotating unit; 201. Internal gear ring; 202. Gear; 203. First driving member; 30. Translation unit; 301. Mounting seat; 302. Third driving member; 40, reversing rib; 401, storage cavity; 402, connecting frame; 4021, pressure-bearing part; 403, adjustment member; 404, reset member; 405, second driving member; 406, adjusting roller; 4061, first telescopic member; 4062, second telescopic member; 407, connecting piece; 4071, connecting pin; 408, first section; 409, middle section; 410, tail section; 4101, plug plate; 411, limit rod; 50. Support ribs. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0020] Please also read Figures 1 to 4 , the adjustable clamp of the present invention is described. An adjustable clamp includes a base plate 10, a rotating unit 20 and a translation unit 30. The base plate 10 is provided with an adjustment cavity 101. A connecting column 102 is fixedly connected to the center of the adjustment cavity 101. The axis of the connecting column 102 is parallel to the axis of the base plate 10. The outer peripheral surface of the connecting column 102 is connected to a plurality of reversing ribs 40 in a circumferential sliding manner. The other end of the reversing rib 40 is connected to the base plate 10 and slides in the circumferential direction of the base plate 10. The reversing rib 40 is also connected to a supporting rib 50 in a circumferential sliding manner. The supporting rib 50 is connected to the side of the reversing rib 40 facing the opening of the adjustment cavity 101. The rotating unit 20 is connected to the reversing rib 40 to drive the reversing rib 40 to rotate around the connecting column 102. The translation unit 30 is connected to the reversing rib to drive the supporting rib 50 to slide.

[0021] In the adjustable clamp provided in this embodiment, the rotating unit 20 drives the reversing rib 40 to rotate around the axis of the connecting column 102. Since the two ends of the reversing rib 40 slide circumferentially on the connecting column 102 and the base plate 10 respectively, the rotational motion will be converted into a circumferential position change of the support rib 50; the translation unit 30 drives the support rib 50 to slide along the length direction of the reversing rib 40 to complete the radial position change of the support rib 50.

[0022] Compared with the prior art, the radial and circumferential position adjustment of the support rib 50 is achieved through the combined control of the rotation unit 20 and the translation unit 30, which can adapt to the clamping requirements of complex contour workpieces such as special-shaped parts and curved parts, thereby improving the applicability of the fixture; at the same time, the position of the support rib 50 can be adjusted according to the optimal clamping point of the workpiece, thereby improving the stability of the workpiece clamping.

[0023] In some embodiments, see Figure 1 and Figure 2The inner wall of the base plate 10 is provided with an annular driving cavity 103; the rotating unit 20 includes an inner gear ring 201, a plurality of gears 202 and a plurality of first driving members 203, the inner gear ring 201 is fixedly connected in the driving cavity 103; the plurality of gears 202 correspond one-to-one with the plurality of reversing ribs 40, the gears 202 are rotatably connected with the reversing ribs 40 around their own central axes, the gears 202 are also slidably connected with the reversing ribs 40, the gears 202 slide along the length direction of the reversing ribs 40, the gears 202 have a first working position meshing with the inner gear ring 201 and a second working position separated from the inner gear ring 201; the plurality of first driving members 203 correspond one-to-one with the plurality of gears 202, and the first driving members 203 are transmission-connected with the gears 202.

[0024] When the gear 202 is located at the first working position, the reversing rib 40 and the base plate 10 are relatively fixed; when the gear 202 is located at the second working position, relative displacement can occur between the reversing rib 40 and the base plate 10.

[0025] It should be noted that the first driving member 203 is a motor.

[0026] Specifically, a storage chamber 401 communicating with the outside is opened at one end of the reversing rib 40 away from the connecting column 102, a connecting frame 402 is slidably connected in the storage chamber 401, the connecting frame 402 has a pressure-bearing portion 4021, the connecting frame 402 slides along the length direction of the reversing rib 40, and the gear 202 is connected to the connecting frame 402 by rotating around its own central axis; an adjusting member 403 and a restoring member 404 are sequentially arranged in the storage chamber 401 along the length direction of the reversing rib 40, and the pressure-bearing portion 4021 is arranged between the adjusting member 403 and the restoring member 404.

[0027] The adjusting member 403 presses the pressed portion 4021 , so that the gear 202 is in the first working position; the adjusting member 403 does not press the pressed portion 4021 , and the resetting member 404 places the gear 202 in the second working position.

[0028] The adjusting member 403 squeezes the pressed portion 4021, causing the connecting frame 402 to move toward the outside of the storage chamber 401 until the gear 202 is in the first working position. At this time, the reversing rib 40 and the base plate 10 are in a relatively slidable state, and then the first driving member 203 starts to drive the gear 202 to rotate. During the rotation of the gear 202, it also moves along the inner gear ring 201, causing the reversing rib 40 to rotate around the connecting column 102, thereby changing the position of the support rib 50 in the axial direction.

[0029] After the position of the support rib 50 in the axial direction is determined, the adjusting member 403 does not squeeze the pressure-bearing portion 4021, and the reset member 404 causes the connecting frame 402 to move inwardly of the storage cavity 401 until the gear 202 is in the second working position, and then the reversing rib 40 and the base plate 10 are fixed to fix the position of the reversing rib 40, thereby fixing the position of the support rib 50 in the axial direction.

[0030] When the reversing rib 40 needs to be rotated, the connecting frame 402 is moved to make the gear 202 mesh with the inner gear ring 201, thereby providing power for the rotation of the reversing rib 40; after the reversing rib 40 is moved to the required position, the connecting frame 402 is moved to make the gear 202 disengage from the inner gear ring 201, thereby avoiding continuous load damage to the output shaft of the first driving member 203 during the process of the support rib 50 clamping the workpiece, thereby extending the service life of the first driving member 203.

[0031] In some embodiments, see Figure 2 The positioning member 403 and the reset member 404 are both slidably connected in the storage cavity 401, and the positioning member 403 and the reset member 404 slide in a direction parallel to the axis of the base plate 10. The sliding directions of the positioning member 403 and the reset member 404 are opposite. The first inclined surface and the second inclined surface are respectively provided on the side where the positioning member 403 and the reset member 404 are close to each other, and the first inclined surface and the second inclined surface are both in contact with the pressure-bearing portion 4021.

[0032] A second driving member 405 is installed in the storage chamber 401, and the second driving member 405 is transmission-connected to an adjusting roller 406. A first telescopic member 4061 is hinged between one end of the adjusting roller 406 and the positioning member 403. The hinge axis of the first telescopic member 4061 and the positioning member 403 is perpendicular to the sliding direction of the positioning member 403. The first telescopic member 4061 is telescopic along the axial direction of the adjusting roller 406. A second telescopic member 4062 is hinged between the other end of the adjusting roller 406 and the reset member 404. The hinge axis of the second telescopic member 4062 and the reset member 404 is perpendicular to the sliding direction of the reset member 404. The second telescopic member 4062 is telescopic along the axial direction of the adjusting roller 406.

[0033] It should be noted that the second driving member 405 is a motor, and the first telescopic member 4061 and the second telescopic member 4062 are both telescopic rods and have a multi-stage telescopic structure.

[0034] The second driving member 405 starts to drive the adjusting roller 406 to rotate. During the rotation of the adjusting roller 406, one end of the adjusting roller 406 moves in a direction away from the connecting frame 402, and the other end of the adjusting roller 406 moves in a direction close to the connecting frame 402, so that the movements of the reset member 404 and the adjustment member 403 are always opposite.

[0035] When the adjusting roller 406 drives the adjusting member 403 to move toward the direction approaching the pressure-bearing portion 4021, the adjusting member 403 squeezes the connecting frame 402 to move toward the outside of the storage chamber 401, so that the gear 202 is in the first working position and the first telescopic member 4061 is in a contracted state; at the same time, the adjusting roller 406 drives the resetting member 404 to move in the direction away from the connecting frame 402, and the second telescopic member 4062 is in a stretched state.

[0036] When the adjusting roller 406 drives the reset member 404 to move toward the direction approaching the pressure-bearing portion 4021, the reset member 404 squeezes the connecting frame 402 to move toward the inside of the storage chamber 401, so that the gear 202 is in the second working position and the second telescopic member 4062 is in a contracted state; at the same time, the adjusting roller 406 drives the positioning member 403 to move in the direction away from the connecting frame 402, and the first telescopic member 4061 is in a stretched state.

[0037] In some embodiments, see Figure 1 and Figure 4 A connecting cavity 104 is provided in an annular shape on the inner wall of the base 10. A first annular electromagnet 105 and a second annular electromagnet 106 are fixedly connected to the inner wall of the connecting cavity 104 of the base 10. The first annular electromagnet 105 and the second annular electromagnet 106 are arranged opposite to each other. A fixing ring 107 is provided between the first annular electromagnet 105 and the second annular electromagnet 106. The fixing ring 107 is fixed to the base 10. A surface of the fixing ring 107 is provided with connecting holes 1071 distributed at intervals in an annular shape. The connecting holes 1071 are provided along the radial direction of the base 10.

[0038] The reversing rib 40 is fixedly connected with a connecting piece 407, and a movable space is formed between the first ring-shaped electromagnet 105 and the fixed ring 107. One end of the connecting piece 407 away from the reversing rib 40 extends into the movable space. The connecting piece 407 is slidably connected with a connecting pin 4071 that is plug-fitted into the connecting hole 1071, and the connecting pin 4071 slides radially along the base plate 10.

[0039] Among them, when the gear 202 is located in the first working position, the first ring-shaped electromagnet 105 is in a powered state, and the second ring-shaped electromagnet 106 is in a non-powered state, and the first ring-shaped electromagnet 105 generates suction, so that the connecting pin 4071 is disengaged from the connecting hole 1071; when the gear 202 is located in the second working position, the first ring-shaped electromagnet 105 is in a non-powered state, and the second ring-shaped electromagnet 106 is in a powered state, and the second ring-shaped electromagnet 106 generates suction, so that the connecting pin 4071 is inserted into the connecting hole 1071.

[0040] It should be noted that the first ring-shaped electromagnet 105 and the second ring-shaped electromagnet 106 are both electromagnets, which will not be described in detail in this application, and the connecting pin 4071 is made of ferromagnetic material.

[0041] When the position of the reversing rib 40 needs to be moved, the first ring-shaped electromagnet 105 is energized to suck the connecting pin 4071 out of the connecting hole 1071; after the position of the reversing rib 40 is determined, the first ring-shaped electromagnet 105 is de-energized, and then the second ring-shaped electromagnet 106 is energized, so that the connecting pin 4071 is firmly fixed in the connecting hole 1071.

[0042] When the support rib 50 is clamping the workpiece, the reversing rib 40 and the base plate 10 are relatively fixed by the plug-in adaptation of the connecting pin 4071 and the connecting hole 1071, thereby ensuring the stability of the workpiece during clamping.

[0043] In some embodiments, see Figure 2 and Figure 3 The reversing rib 40 includes a first section 408 detachably connected to the base plate 10, and a tail section 410 detachably connected to the connecting column 102, and also includes a middle section 409 rotatably connected between the first section 408 and the tail section 410. The first section 408 rotates around the axial direction of the connecting column 102, and the middle section 409 rotates around its own central axis. A limiting rod 411 is fixedly connected between the first section 408 and the tail section 410.

[0044] There are multiple translation units 30, which correspond to the reversing ribs 40 one by one. The translation unit 30 includes a mounting seat 301 and a third driving member 302. The mounting seat 301 is sleeved on the outer periphery of the middle section 409 and is screwed with the middle section 409. The limiting rod 411 is slidably passed through the mounting seat 301; the third driving member 302 is installed on the first section 408 or the tail section 410 and is transmission-connected to the middle section 409.

[0045] It should be noted that the third driving member 302 is a motor. Figure 3 The structure in FIG. 4 is that the third driving member 302 is installed in the tail section 410 .

[0046] The third driving member 302 starts to drive the middle section 409 to rotate, and the rotation of the middle section 409 drives the mounting seat 301 to slide along the limiting rod 411, so that the position of the supporting rib 50 in the radial direction can be adjusted.

[0047] In some embodiments, see Figure 2 A connecting buckle 1021 is sleeved on the outer periphery of the connecting column 102. The connecting buckle 1021 rotates with the axial direction of the connecting column 102 as the rotation axis. The connecting buckle 1021 is detachably connected to the tail section 410 and the connecting column 102 respectively.

[0048] Specifically, the tail section 410 is fixedly connected with the plug plate 4101 , and a socket 10211 which is plugged and adapted to the plug plate 4101 is formed at one end of the connecting buckle 1021 away from the connecting column 102 , and the plug plate 4101 and the connecting buckle 1021 are fixed by bolts.

[0049] The tail section 410 and the connecting column 102 are fixed by a quick-release and quick-installation method, which can improve the disassembly and installation efficiency of the reversing rib 40, thereby shortening the time required for clamping the workpiece.

[0050] In some embodiments, the support rib 50 is detachably connected to the mounting seat 301 . Specifically, the support rib 50 is screwed to the mounting seat 301 .

[0051] It should be noted that the support rib 50 can be in various shapes such as a cylinder, a rectangular plate, an arc-shaped plate, etc. The support rib 50 in the figure is cylindrical.

[0052] The support ribs 50 of different shapes can be replaced according to the characteristics of the workpiece, which makes it easier for the support ribs 50 to clamp the workpiece. The support ribs 50 and the mounting seat 301 are connected by a quick-release and quick-install method, which improves the disassembly and installation efficiency of the support ribs 50 and further shortens the time required to clamp the workpiece.

[0053] Based on the same inventive concept, the embodiment of the present application also provides a method for adjusting a clamp, the steps are as follows: S10, determining the number of the reversing ribs 40 and the shape of the supporting ribs 50 according to the shape of the workpiece, and installing the reversing ribs 40 and the supporting ribs 50; S20, determining the best supporting point for the support rib 50 to clamp the workpiece according to the shape of the workpiece; S30 , adjusting the position of the support rib 50 through the rotation unit 20 and the translation unit 30 according to the optimal support point.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable clamp, characterized in that: include: A base plate is provided with an adjustment cavity, a connecting column is fixedly connected to the center of the adjustment cavity, the axis of the connecting column is parallel to the axis of the base plate, the outer peripheral surface of the connecting column is slidably connected to a plurality of reversing ribs along its own circumferential direction, one end of the reversing rib is connected to the base plate and slides along the circumferential direction of the base plate, the reversing rib is also slidably connected to a supporting rib along its own length direction, and the supporting rib is connected to the side of the reversing rib facing the opening of the adjustment cavity; A rotating unit, connected to the reversing rib, and used to drive the reversing rib to rotate around the connecting column; as well as The translation unit is connected to the support rib and is used to drive the support rib to slide.

2. The adjustable clamp according to claim 1, characterized in that: The inner wall of the base plate is provided with an annular driving cavity; The rotating unit comprises: An inner gear ring, fixedly connected to the driving cavity; a plurality of gears corresponding to the plurality of the reversing ribs one by one, the gears being rotatably connected to the reversing ribs around their own central axes, the gears being slidably connected to the reversing ribs, the gears sliding along the length direction of the reversing ribs, the gears having a first working position meshing with the inner gear ring and a second working position separated from the inner gear ring; and A plurality of first driving members corresponding to the plurality of gears one by one, the first driving members being drivingly connected to the gears; Wherein, when the gear is located at the first working position, the reversing rib and the base plate are relatively fixed; when the gear is located at the second working position, relative displacement can occur between the reversing rib and the base plate.

3. The adjustable clamp according to claim 2, characterized in that: The reversing rib is provided with a receiving cavity communicated with the outside at one end away from the connecting column, a connecting frame is slidably connected in the receiving cavity, the connecting frame slides along the length direction of the reversing rib, the connecting frame has a pressure-bearing portion, and the gear is connected to the connecting frame by rotating around its own central axis; The receiving cavity is provided with a position adjusting member and a reset member in sequence along the length direction of the reversing rib, and the pressure receiving portion is provided between the position adjusting member and the reset member; The adjusting member presses the pressure-bearing portion, so that the gear is in the first working position; the adjusting member does not press the pressure-bearing portion, and the resetting member makes the gear in the second working position.

4. The adjustable clamp according to claim 3, characterized in that: The positioning member and the reset member are both slidably connected in the receiving cavity, and the positioning member and the reset member slide in a direction parallel to the axis of the base plate, and the sliding directions of the positioning member and the reset member are opposite. The first inclined surface and the second inclined surface are respectively provided on the side where the positioning member and the reset member are close to each other, and the first inclined surface and the second inclined surface are both in contact with the pressure-bearing portion.

5. The adjustable clamp according to claim 4, characterized in that: A second driving member is installed on the reversing rib, and the second driving member is drivingly connected to an adjusting roller. A first telescopic member is hinged between one end of the adjusting roller and the positioning member, and a hinge axis between the first telescopic member and the positioning member is perpendicular to the sliding direction of the positioning member, and the first telescopic member is telescopic along the axial direction of the adjusting roller. A second telescopic member is hinged between the other end of the adjusting roller and the reset member, and a hinge axis between the second telescopic member and the reset member is perpendicular to the sliding direction of the reset member, and the second telescopic member is telescopic along the axial direction of the adjusting roller.

6. The adjustable clamp according to claim 2, characterized in that: The inner wall of the base plate is provided with a connecting cavity in an annular shape, and the base plate is fixedly connected with a first annular electromagnet and a second annular electromagnet on the inner wall of the connecting cavity, the first annular electromagnet and the second annular electromagnet are arranged opposite to each other, a fixing ring is arranged between the first annular electromagnet and the second annular electromagnet, the fixing ring is fixed to the base plate, and the surface of the fixing ring is provided with connecting holes distributed at intervals in an annular shape, and the connecting holes are provided along the radial direction of the base plate; The reversing rib is fixedly connected with a connecting piece, an activity space is formed between the first ring-shaped electromagnet and the fixed ring, one end of the connecting piece away from the reversing rib extends into the activity space, the connecting piece is slidably connected with a connecting pin plug-fitted with the connecting hole, and the connecting pin slides along the radial direction of the base plate; Wherein, when the gear is located at the first working position, the first ring-shaped electromagnet is in a powered state, and the second ring-shaped electromagnet is in a non-powered state, and the first ring-shaped electromagnet generates suction, so that the connecting pin is disengaged from the connecting hole; when the gear is located at the second working position, the first ring-shaped electromagnet is in a non-powered state, and the second ring-shaped electromagnet is in a powered state, and the second ring-shaped electromagnet generates suction, so that the connecting pin is inserted into the connecting hole.

7. The adjustable clamp according to claim 1, characterized in that: The reversing rib comprises a first section detachably connected to the base plate, and a tail section detachably connected to the connecting column, and also comprises an intermediate section rotatably connected between the first section and the tail section, wherein the first section uses the axial direction of the connecting column as a rotation axis, and the intermediate section rotates around its own central axis, and a limiting rod is fixedly connected between the first section and the tail section; The translation unit is provided with a plurality of units, and the translation units correspond to the reversing ribs one by one. The translation unit includes: A mounting seat, which is sleeved on the outer circumference of the middle section and threadedly connected to the middle section, and the limiting rod is slidably disposed through the mounting seat; and The third driving member is installed on the first section or the last section and is drivingly connected with the middle section.

8. The adjustable clamp according to claim 7, characterized in that: A connecting buckle is sleeved on the outer periphery of the connecting column. The connecting buckle rotates with the axial direction of the connecting column as the rotating axis. The connecting buckle is detachably connected to the tail section and the connecting column respectively.

9. The adjustable clamp according to claim 7, characterized in that: The supporting rib is detachably connected to the mounting seat.

10. A method for adjusting a clamp, comprising the adjustable clamp according to any one of claims 1 to 9, characterized in that: Here are the steps: S10, determining the number of the reversing ribs and the shape of the supporting ribs according to the shape of the workpiece, and installing the reversing ribs and the supporting ribs; S20, determining the best supporting point for the support rib to clamp the workpiece according to the shape of the workpiece; S30. According to the optimal supporting point, the position of the supporting rib is adjusted by the rotating unit and the translating unit.

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