Clamping device

Abstract

The utility model relates to the technical field of clamps, in particular to a clamping device. The clamping device comprises a base, a clamping mechanism, a driving mechanism and a locking mechanism. The clamping mechanism comprises a pair of oppositely-arranged levers, each lever comprises a clamping part, a rotating part and a driving part which are connected, and the rotating parts are rotatably connected with the base. And a clamping space is formed between the clamping parts of the pair of levers and is used for placing a workpiece for clamping. The driving mechanism comprises a clamping driving part and a control assembly, the clamping driving part is arranged on the base, the control assembly is connected with the clamping driving part and the driving parts of the levers so as to control the clamping parts of the levers to be close to each other, and therefore a workpiece is clamped, and the locking mechanism is connected with the control assembly so as to fix the relative positions of the levers through the control assembly. And the action of automatically clamping the workpiece is achieved, convenience and rapidness are achieved, and the workpiece clamping efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of clamping technology, and more particularly to a clamping device. Background Technology

[0002] During machining, workpieces often require clamping and positioning using fixtures. After machining, the workpiece needs to be released from the clamp to facilitate its transfer from the workstation. In related technologies, operators manually place the workpiece in a vise for fixation and machining. After machining, the workpiece is manually removed from the vise, resulting in low efficiency due to manual operation. Utility Model Content

[0003] In view of this, this application provides a clamping device that can improve the efficiency of clamping workpieces.

[0004] Embodiments of this application provide a clamping device, including a base, a clamping mechanism, a driving mechanism, and a locking mechanism. The clamping mechanism includes a pair of opposing levers. Each lever includes a connected clamping portion, a rotating portion, and a driving portion. The rotating portion is rotatably connected to the base. A clamping space is formed between the clamping portions of the pair of levers, and the clamping space is used to place a workpiece for clamping. The driving mechanism includes a clamping drive component and a control component. The clamping drive component is disposed on the base. The control component is connected to the clamping drive component and the driving portions of the pair of levers to control the clamping portions of the pair of levers to move closer to each other. The locking mechanism is connected to the control component to fix the relative position of the pair of levers.

[0005] In at least one embodiment, the control component includes a rotating shaft and a clamping cam, the clamping cam being fixedly disposed with the rotating shaft, and a clamping drive driving the rotating shaft to rotate; the clamping cam is located between a pair of levers, and the clamping cam includes a pushing portion, which abuts against and pushes the driving portions of the pair of levers away from each other, causing the clamping portions of the pair of levers to move closer to each other.

[0006] In at least one embodiment, the clamping device further includes a reset mechanism, which includes at least one set of reset springs disposed on the base and used to push the drive portions of a pair of levers closer together.

[0007] In at least one embodiment, the clamping cam further includes a reset part, the distance between the reset part and the central axis of the rotating shaft is less than the distance between the push part and the central axis of the rotating shaft, and when the reset part abuts against the drive part of a pair of levers, the reset spring pushes the drive parts of the pair of levers closer to each other.

[0008] In at least one embodiment, the clamping cam includes two sub-cams, which are eccentric cams. The farthest end of the sub-cam from the central axis of the rotating shaft is a pushing part, and the pushing parts of the two sub-cams are located on different sides of the central axis of the rotating shaft.

[0009] In at least one embodiment, the locking mechanism includes a locking drive, a locking block, and a clamp. The locking drive is disposed on the base and connected to the locking block to drive the locking block to slide on the base in a direction parallel to the central axis of the rotating shaft. The clamp is sleeved on the outer circumferential surface of the rotating shaft. The locking block drives the clamp to move. The clamp has a locked position. When the locking block drives the clamp to the locked position, the clamp clamps the rotating shaft and fixes the relative angle between the rotating shaft and the locking block.

[0010] In at least one embodiment, the locking block and the clamping sleeve are connected by a bevel engagement. When the clamping sleeve is in the locked position, the locking block drives the clamping sleeve to clamp the rotating shaft by the bevel thrust.

[0011] In at least one embodiment, the sleeve is a conical spring collet structure, and a stop plate is provided on the rotating shaft. The stop plate is sleeved on the outer peripheral surface of the rotating shaft, and the outer peripheral surface of the rotating shaft has a stop step. The stop step is located on the side of the stop plate away from the sleeve. When the locking block drives the sleeve and the stop plate to press against the stop step, the sleeve is in the locked position.

[0012] In at least one embodiment, the locking mechanism further includes an unlocking elastic element disposed on the base and used to push the stop piece away from the stop step.

[0013] In at least one embodiment, the clamping part is provided with a replaceable clamping block, the surface of which has an anti-slip texture or a soft material layer.

[0014] A clamping space is formed between the clamping parts of a pair of levers, which is used to place the workpiece. The clamping drive is connected to the drive parts of the pair of levers through a control component to control the clamping parts of the pair of levers to move closer to each other, thereby clamping the workpiece. Then, a locking mechanism is connected to the control component to fix the relative position of the pair of levers, thereby realizing the automatic clamping and locking of the workpiece. This is convenient, fast, and helps to improve the efficiency of clamping the workpiece. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the clamping device in one embodiment of this application.

[0016] Figure 2 This is a schematic diagram showing the positional relationship between the clamping mechanism and the driving mechanism in one embodiment of this application.

[0017] Figure 3 This is a schematic diagram showing the positional relationship between the clamping cam and the lever in one embodiment of this application.

[0018] Figure 4 This is a schematic diagram illustrating another positional relationship between the clamping cam and the lever in one embodiment of this application.

[0019] Figure 5This is a schematic diagram showing the positional relationship between the reset mechanism and the clamping mechanism in one embodiment of this application.

[0020] Figure 6 This is a cross-sectional structural schematic diagram of the locking mechanism in one embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the overall structure of the jacket in one embodiment of this application.

[0022] Explanation of main component symbols

[0023] 001. Clamping device; 100. Base; 110. Base plate; 111. Linear guide rail; 1111. Slide rail; 1112. Slider; 112. Shaft support; 120. Drive plate; 130. First mounting plate; 140. Second mounting plate; 150. Support column; 160. Support plate; 170. Positioning plate; 171. Positioning column; 180. Reset block; 181. Mounting hole; 190. Locking mounting plate; 200. Clamping mechanism; 210. Lever; 211. Clamping part; 2111. Clamping block; 212. Rotating part; 213. Drive part; 300. Drive mechanism; 310 320. Clamping drive component; 321. Control component; 321. Rotating shaft; 3211. Stop plate; 3212. Stop step; 322. Clamping cam; 3221. Pushing part; 3222. Reset part; 3223. Sub-cam; 400. Reset mechanism; 410. Reset spring; 420. Reset push rod; 421. Internal part; 422. External push part; 500. Locking mechanism; 510. Locking drive component; 520. Locking block; 521. Locking oblique hole; 530. Jacket; 531. Contraction gap; 540. Unlocking elastic component; X, First direction; Y, Second direction; Z, Third direction. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this application to achieve the intended purpose, the following description, in conjunction with the accompanying drawings and embodiments, is provided. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0026] In related technologies, operators manually place the workpiece in a vise for fixation. After machining, the workpiece is manually removed from the vise, resulting in low efficiency due to manual operation.

[0027] Embodiments of this application provide a clamping device, including a base, a clamping mechanism, and a driving mechanism. The clamping mechanism includes a pair of levers arranged facing each other. Each lever includes a connected clamping portion, a rotating portion, and a driving portion. The rotating portion is rotatably connected to the base. A clamping space is formed between the clamping portions of the pair of levers, and the clamping space is used to place a workpiece for clamping. The driving mechanism includes a clamping drive component and a control component. The clamping drive component is disposed on the base, and the control component is connected to the clamping drive component and the driving portions of the pair of levers to control the clamping portions of the pair of levers to move closer together.

[0028] A clamping space is formed between the clamping parts of a pair of levers, which is used to place the workpiece. The clamping drive is connected to the drive parts of the pair of levers through a control component to control the clamping parts of the pair of levers to move closer to each other, thereby clamping the workpiece. Then, a locking mechanism is connected to the control component to fix the relative position of the pair of levers, thereby realizing the automatic clamping and locking of the workpiece. This is convenient, fast, and helps to improve the efficiency of clamping the workpiece.

[0029] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0030] Please see Figure 1 One embodiment of this application provides a clamping device 001, including a base 100, a clamping mechanism 200 and a driving mechanism 300. The clamping mechanism 200 and the driving mechanism 300 are both disposed on the same side surface of the base 100. The driving mechanism 300 is used to drive the clamping mechanism 200 to move so as to clamp the workpiece.

[0031] In some embodiments, the base 100 includes a base plate 110, a drive plate 120, a first mounting plate 130, and a second mounting plate 140, all of which are fixed to the same side surface of the base plate 110. The first mounting plate 130 and the second mounting plate 140 are spaced apart along a second direction Y, and the drive plate 120 is located on one side of the first mounting plate 130 and the second mounting plate 140 along a first direction X. The first direction X is perpendicular to the second direction Y. The first direction X is the length direction of the base plate 110, and the second direction Y is the width direction of the base plate 110.

[0032] In some embodiments, the clamping mechanism 200 includes a pair of opposing levers 210, which are respectively mounted on a first mounting plate 130 and a second mounting plate 140.

[0033] The lever 210 includes a clamping part 211, a rotating part 212, and a driving part 213 connected together. The rotating parts 212 of a pair of levers 210 are rotatably connected to the first mounting plate 130 and the second mounting plate 140, respectively. A clamping space is formed between the clamping parts 211 of the pair of levers 210. The clamping space is used to place the workpiece for clamping.

[0034] In some embodiments, the base 100 further includes a support column 150 and a support plate 160. The support column 150 is fixed to the base plate 110 and is located on the same side of the base plate 110 as the drive plate 120. The support plate 160 is fixed to the end of the support column 150 away from the base plate 110. Along the third direction Z, the orthographic projection of the support plate 160 onto the base plate 110 lies within the orthographic projections of the first mounting plate 130 and the second mounting plate 140 onto the base plate 110, and the support plate 160 is at least partially located within the clamping space. Here, the third direction Z is the thickness direction of the base plate 110, and the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0035] In some embodiments, a positioning plate 170 is provided on the surface of the support plate 160 away from the base plate 110, and a positioning post 171 is provided on the surface of the positioning plate 170 away from the support plate 160. The positioning post 171 is used to position the workpiece.

[0036] In some embodiments, two positioning posts 171 are provided, and the two positioning posts 171 are spaced apart along the first direction X.

[0037] In some embodiments, two positioning posts 171 are provided, and the two positioning posts 171 are spaced apart along the second direction Y.

[0038] In some embodiments, a plurality of positioning posts 171 are provided, and the plurality of positioning posts 171 are spaced apart on the surface of the positioning plate 170.

[0039] In some embodiments, the drive mechanism 300 includes a clamping drive member 310 and a control component 320. The clamping drive member 310 is disposed on the drive plate 120. The control component 320 is connected to the clamping drive member 310 and the drive portion 213 of a pair of levers 210 to control the clamping portions 211 of the pair of levers 210 to move closer to each other, thereby clamping the workpiece and realizing the action of automatically clamping the workpiece, which is convenient and quick and helps to improve the efficiency of clamping the workpiece.

[0040] In other embodiments, the clamping mechanism 200 includes multiple pairs of opposing levers 210, which are spaced apart along a first direction X. A control component 320 connects the clamping drive 310 and the drive portions 213 of the multiple pairs of levers 210 to simultaneously control the clamping portions 211 of the multiple pairs of levers 210 to move closer together. This allows the multiple pairs of opposing levers 210 to simultaneously clamp the workpiece, thereby enhancing the clamping stability of the workpiece.

[0041] In some embodiments, the clamping drive 310 is a rotary cylinder.

[0042] In other embodiments, the clamping drive 310 is a rotary stepper motor.

[0043] In some embodiments, the clamping part 211 is provided with a replaceable clamping block 2111, the surface of which has an anti-slip texture or a soft material layer.

[0044] In some embodiments, the clamping block 2111 is rotatably connected to the clamping part 211, thereby enabling the clamping angle to be adaptively adjusted according to the shape of the workpiece, which helps to improve the stability of clamping.

[0045] Please see Figure 1 and Figure 2 In some embodiments, the control component 320 includes a rotating shaft 321 and a clamping cam 322, with the central axis of the rotating shaft 321 parallel to a first direction X. The clamping cam 322 is fixedly disposed with the rotating shaft 321, and the clamping drive 310 is connected to the rotating shaft 321 and drives the rotating shaft 321 to rotate, so that the rotating shaft 321 can drive the clamping cam 322 to rotate synchronously.

[0046] Please see Figure 2 and Figure 3 The clamping cam 322 is located between a pair of levers 210. The clamping cam 322 includes a pushing part 3221. When the pushing part 3221 abuts against and pushes the driving part 213 of the pair of levers 210 away from each other, the clamping parts 211 of the pair of levers 210 move closer to each other.

[0047] Please see Figure 2 and Figure 4 In some embodiments, the clamping cam 322 further includes a reset part 3222, the distance between the reset part 3222 and the central axis of the rotating shaft 321 is less than the distance between the push part 3221 and the central axis of the rotating shaft 321.

[0048] When the reset part 3222 contacts the drive part 213 of the pair of levers 210, the distance between the drive parts 213 of the pair of levers 210 is the smallest, and the distance between the clamping parts 211 of the pair of levers 210 is the largest.

[0049] In some embodiments, the clamping cam 322 includes two sub-cams 3223, which are eccentric cams.

[0050] The farthest end of the sub-cam 3223 from the central axis of the rotating shaft 321 is the push part 3221, and the push parts 3221 of the two sub-cams 3223 are located on different sides of the central axis of the rotating shaft 321.

[0051] By using two eccentric sub-cams 3223 to form a clamping cam 322, the design and processing of the cam is simplified, avoiding the design and processing of complex contour surfaces on the outer periphery of the cam, and reducing processing costs.

[0052] Please see Figure 1 and Figure 5 In some embodiments, the clamping device 001 further includes a reset mechanism 400, which is used to push a pair of levers 210 to reset. The reset mechanism 400 is disposed on the base plate 110 and is located on the same side of the base plate 110 as the drive plate 120.

[0053] In some embodiments, the reset mechanism 400 is provided in multiple sets, and the reset mechanism 400 is located on the side of a pair of levers 210 away from the clamping cam 322.

[0054] The following description uses one of the reset mechanisms 400 as an example.

[0055] Please see Figure 1 , Figure 4 and Figure 5 In some embodiments, the reset mechanism 400 includes at least one set of reset springs 410, which are disposed on the base 100 and used to push the drive portions 213 of a pair of levers 210 closer together. When the reset portion 3222 abuts against the drive portions 213 of the pair of levers 210, the reset springs 410 push the drive portions 213 of the pair of levers 210 closer together.

[0056] In some embodiments, the base 100 further includes a reset block 180, which is fixed to the base plate 110 and located on the same side of the base plate 110 as the drive plate 120. The reset block 180 is located on the side of the first mounting plate 130 away from the clamping cam 322.

[0057] The reset block 180 is provided with a mounting hole 181, and the reset spring 410 is disposed in the mounting hole 181.

[0058] The reset mechanism 400 also includes a reset push rod 420, which includes an inner part 421 located in the mounting hole 181 and an outer part 422 located outside the mounting hole 181.

[0059] One end of the return spring 410 is pressed against the inner part 421, and the outer part 422 is pressed against the drive part 213, so that the drive part 213 can automatically reset, making it easier to transfer the workpiece out of the workstation.

[0060] Please see Figure 1 and Figure 6In some embodiments, the clamping device 001 further includes a locking mechanism 500, which is used to lock the rotating shaft 321 when the opposing levers 210 clamp the workpiece, so as to restrict the rotation of the rotating shaft 321 and improve the clamping stability of the clamping device 001.

[0061] The locking mechanism 500 includes a locking drive 510, a locking block 520, and a clamping sleeve 530. The base 100 also includes a locking mounting plate 190, which is fixed to the upper surface of the base plate 110 and disposed adjacent to the drive plate 120. The locking drive 510 is disposed on the locking mounting plate 190 and is connected to the locking block 520 to drive the locking block 520 to slide on the base 100 in a direction parallel to the central axis of the rotating shaft 321.

[0062] The clamp 530 is sleeved on the outer circumferential surface of the rotating shaft 321. The locking block 520 drives the clamp 530 to move. The clamp 530 has a locked position. When the locking block 520 drives the clamp 530 to the locked position, the clamp 530 clamps the rotating shaft 321 and fixes the relative angle between the rotating shaft 321 and the locking block 520, thereby restricting the rotation of the rotating shaft 321 and improving the clamping stability of the clamping device 001.

[0063] In some embodiments, a linear guide rail 111 is provided between the locking block 520 and the base plate 110. The linear guide rail 111 includes a slide rail 1111 and a slider 1112. The slide rail 1111 is fixed to the upper surface of the base plate 110 and extends along a first direction X. The slider 1112 is slidably disposed on the slide rail 1111 along the first direction X. The locking block 520 is fixed to the slider 1112, which helps to improve the movement stability of the locking block 520.

[0064] In some embodiments, the upper surface of the base plate 110 is provided with two shaft supports 112, which are spaced apart along a first direction X. A bearing (not shown) is installed in the shaft support 112, and the rotating shaft 321 passes through the bearing to support the rotation of the rotating shaft 321, which helps to improve the rotational stability of the rotating shaft 321.

[0065] In some embodiments, the locking block 520 and the clamping sleeve 530 are connected by a bevel engagement. The locking block 520 has a locking bevel hole 521 on its side facing the clamping cam 322, and the clamping sleeve 530 is located inside the locking bevel hole 521. When the clamping sleeve 530 is in the locked position, the inner wall of the locking bevel hole 521 drives the clamping sleeve 530 to clamp the rotating shaft 321 through the bevel thrust.

[0066] Please see Figure 6 and Figure 7Specifically, the sleeve 530 is a conical spring collet structure, composed of multiple circumferentially distributed elastic metal sheets connected end-to-end, with a contraction gap 531 between adjacent sheets. When the locking block 520 presses the sleeve 530 against the inclined surface, the multiple circumferentially distributed elastic metal sheets approach each other and clamp the circumferential surface of the rotating shaft 321. Simultaneously, the multiple circumferentially distributed elastic metal sheets also abut against the locking inclined hole 521 of the locking block 520, thereby fixing the relative angle between the rotating shaft 321 and the locking block 520.

[0067] Please see Figure 1 and Figure 6 In some embodiments, a stop plate 3211 is provided on the rotating shaft 321, and the stop plate 3211 is sleeved on the outer peripheral surface of the rotating shaft 321.

[0068] The outer peripheral surface of the rotating shaft 321 has a stop step 3212. The stop step 3212 is located on the side of the stop piece 3211 away from the sleeve 530. When the locking block 520 drives the sleeve 530 and the stop piece 3211 to press against the stop step 3212, the sleeve 530 is in the locked position.

[0069] In some embodiments, the locking mechanism 500 further includes an unlocking elastic member 540, which is disposed on the base 100 and used to push the stop plate 3211 away from the stop step 3212. Specifically, the unlocking elastic member 540 is sleeved on the outer peripheral surface of the rotating shaft 321, one end of the unlocking elastic member 540 abuts against the shaft support 112, and the other end of the unlocking elastic member 540 abuts against the stop plate 3211. The unlocking elastic member 540 has an elastic force to push the stop plate 3211 away from the stop step 3212.

[0070] When the locking drive 510 releases the force pushing the locking block 520, the unlocking elastic member 540 pushes the stop plate 3211 away from the stop step 3212. The stop plate 3211 pushes the sleeve 530 to move away from the clamping cam 322. The multiple circumferentially distributed elastic metal plates move away from each other and release the force clamping the rotating shaft 321, thereby unlocking the rotating shaft 321.

[0071] In some embodiments, the locking drive 510 is a linear cylinder.

[0072] In other embodiments, the locking drive 510 is a linear motor.

[0073] In some embodiments, the unlocking elastic element 540 is a compression spring.

[0074] In other embodiments, the unlocking elastic element 540 is made of elastic soft rubber.

[0075] In some embodiments, the locking mechanism 500 is linked to the drive mechanism 300. When the rotating shaft 321 stops rotating, the locking drive 510 is activated to clamp the rotating shaft 321 through the clamp 530, thereby restricting the rotation of the rotating shaft 321. When the workpiece is finished, the locking drive 510 retracts, and the clamp 530 releases the force clamping the rotating shaft 321, thereby unlocking the rotating shaft 321.

[0076] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A clamping device, characterized in that, include: Base; A clamping mechanism includes a pair of levers arranged opposite each other. Each lever includes a clamping part, a rotating part, and a driving part connected together. The rotating part is rotatably connected to the base. A clamping space is formed between the clamping parts of the pair of levers. The clamping space is used to place a workpiece for clamping. A drive mechanism includes a clamping drive component and a control component. The clamping drive component is disposed on the base, and the control component is connected to the clamping drive component and the drive portion of a pair of levers to control the clamping portions of the pair of levers to move closer to each other. A locking mechanism connected to the control component to fix the relative positions of a pair of levers via the control component.

2. The clamping device as described in claim 1, characterized in that, The control component includes a rotating shaft and a clamping cam. The clamping cam is fixedly disposed with the rotating shaft, and the clamping drive drives the rotating shaft to rotate. The clamping cam is located between a pair of levers and includes a pushing part. When the pushing part abuts against and pushes the driving parts of the pair of levers away from each other, the clamping parts of the pair of levers move closer to each other.

3. The clamping device as described in claim 2, characterized in that, The clamping device further includes a reset mechanism, which includes at least one set of reset springs, which are disposed on the base and used to push the drive portions of the pair of levers closer to each other.

4. The clamping device as described in claim 3, characterized in that, The clamping cam also includes a reset part, the distance between the reset part and the central axis of the rotating shaft is less than the distance between the pushing part and the central axis of the rotating shaft. When the reset part abuts against the driving part of the pair of levers, the reset spring pushes the driving parts of the pair of levers closer to each other.

5. The clamping device as described in claim 2, characterized in that, The clamping cam includes two sub-cams, each of which is an eccentric cam. The farthest end of each sub-cam from the central axis of the rotating shaft is the pushing part, and the pushing parts of the two sub-cams are located on different sides of the central axis of the rotating shaft.

6. The clamping device as described in claim 2, characterized in that, The locking mechanism includes a locking drive, a locking block, and a clamp. The locking drive is disposed on the base and connected to the locking block to drive the locking block to slide on the base in a direction parallel to the central axis of the rotating shaft. The sleeve is fitted onto the outer circumferential surface of the rotating shaft. The locking block drives the sleeve to move. The sleeve has a locked position. When the locking block drives the sleeve to the locked position, the sleeve clamps the rotating shaft and fixes the relative angle between the rotating shaft and the locking block.

7. The clamping device as described in claim 6, characterized in that, The locking block and the clamping sleeve are connected by an inclined surface. When the clamping sleeve is in the locked position, the locking block drives the clamping sleeve to clamp the rotating shaft by the inclined surface thrust.

8. The clamping device as described in claim 6, characterized in that, The sleeve is a conical spring collet structure. A stop plate is provided on the rotating shaft. The stop plate is sleeved on the outer circumferential surface of the rotating shaft. The outer circumferential surface of the rotating shaft has a stop step. The stop step is located on the side of the stop plate away from the sleeve. When the locking block drives the sleeve and the stop plate to press against the stop step, the sleeve is in the locked position.

9. The clamping device as described in claim 8, characterized in that, The locking mechanism further includes an unlocking elastic element, which is disposed on the base and used to push the stop piece away from the stop step.

10. The clamping device as claimed in claim 1, characterized in that, The clamping part is provided with a replaceable clamping block, the surface of which has an anti-slip texture or a soft material layer.

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