Workpiece clamping device

Abstract

The utility model relates to the technical field of clamps, in particular to a workpiece holding and clamping device which comprises a base, two groups of holding and clamping frames, a transmission gear, a first rack, a second rack and a driving piece, the holding and clamping device can be fixed on a workbench through the base, the two groups of holding and clamping frames are connected to the base in a sliding mode, and in the clamping process of a workpiece, the transmission gear is driven by the driving piece. A workpiece can be clamped through mutual approaching of the two holding and clamping frames, the transmission gear is located between the two holding and clamping frames, and the first rack and the second rack are fixed to the two holding and clamping frames respectively and meshed with the two sides of the transmission gear respectively. According to the workpiece holding and clamping device, the other holding and clamping frame can be driven to slide through transmission of the transmission gear, the first rack and the second rack, so that the driving part is in driving connection with one holding and clamping frame and drives the holding and clamping frame to slide, synchronous sliding of the two holding and clamping frames can be achieved, the number of the driving parts is reduced, and the assembling cost of the workpiece holding and clamping device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a workpiece clamping device. Background Technology

[0002] Clamping devices are mainly used to clamp workpieces and then transfer the clamped workpieces.

[0003] For example, the patent document with announcement number CN220449052U discloses a clamping robot. The clamping component of the clamping robot includes two bases and clamping plates. The bases are driven to move laterally by a drive component. The two clamping plates can be driven by the clamping component to move the two bases closer to each other or further apart, so that the two clamping plates clamp or release the workpiece, thereby achieving the clamping of the workpiece. The clamping robot also prevents the workpiece from falling by setting a stop.

[0004] The gripping robot's gripping components require two sets of gripping hydraulic cylinders to drive the two bases respectively, resulting in a high assembly cost for the gripping robot. Utility Model Content

[0005] In view of this, it is necessary to provide a workpiece clamping device to solve the technical problem of high assembly cost of existing workpiece clamping devices.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a workpiece clamping device, comprising:

[0007] Base;

[0008] Two sets of clamping frames are arranged opposite to each other and are slidably connected to the base;

[0009] A transmission gear is rotatably connected to the base and located between the two sets of clamping frames;

[0010] The first rack is fixed to one of the clamping frames and meshes with one side of the transmission gear;

[0011] The second rack is fixed to another set of the clamping brackets and meshes with the other side of the transmission gear; and

[0012] A driving component, which is driven to one of the sets of clamps, is used to drive the two sets of clamps to move closer or further apart.

[0013] Furthermore, the workpiece clamping device also includes a limiting component, which is fixed to the base and located between the two sets of clamping frames, and the transmission gear is rotatably connected to the limiting component.

[0014] Furthermore, the limiting component includes a fixed disk, a rotating shaft, and a rotating bearing. The fixed disk is fixed to the base, the rotating shaft is fixed to the fixed disk, the rotating bearing is sleeved on the rotating shaft, and the transmission gear is fixed to the rotating bearing.

[0015] Furthermore, the limiting assembly also includes a bracket and two limiting wheels. The bracket is connected to the rotating shaft, and the two limiting wheels are rotatably connected to both ends of the bracket and respectively fit against the outer surfaces of the first rack and the second rack.

[0016] Furthermore, the bracket is slidably connected to the feed shaft and can be slidably disengaged from the feed shaft. The limiting component also includes a locking nut, which is threadedly connected to the feed shaft to lock the bracket.

[0017] Furthermore, the limiting component also includes a spacer sleeve, which is sleeved on the feed shaft, and the two ends of the spacer sleeve abut against the feed bearing and the bracket, respectively.

[0018] Furthermore, both sets of clamping frames include a base plate, a connecting frame, and two sets of clamping blocks. The base plate is slidably connected to the base, the connecting frame is fixed to the base plate, and the two sets of clamping blocks are respectively fixed to both sides of the connecting frame, for clamping the workpiece by the proximity of the two sets of clamping frames.

[0019] Furthermore, the clamping opening of the clamping block is provided with a rubber pad.

[0020] Furthermore, the clamping block is provided with a straight groove, and the clamping block is fixed to the connecting frame by bolts passing through the straight groove.

[0021] Furthermore, the clamping frame also includes a support frame, one side of which is fixedly connected to the connecting frame, and the other side of which is located below the clamping block and is fixedly connected to the clamping block by bolts.

[0022] Compared with the prior art, the beneficial effects of the workpiece clamping device of this utility model include: by setting a base, two sets of clamping frames, a transmission gear, a first rack, a second rack, and a driving component, the clamping device can be fixed on the worktable by the base. The two sets of clamping frames are slidably connected to the base. During the clamping process, the workpiece can be clamped by the mutual approach of the two sets of clamping frames. Since the workpiece clamping device is also equipped with a transmission gear, a first rack, and a second rack, the transmission gear is located between the two sets of clamping frames. The first rack and the second rack are respectively fixed to the two sets of clamping frames and mesh with the two sides of the transmission gear. Through this structure, when one set of clamping frames slides, the other set of clamping frames can be driven to slide through the transmission of the transmission gear, the first rack, and the second rack. Therefore, the driving component is driven to slide by driving one set of clamping frames, thereby enabling the synchronous sliding of the two sets of clamping frames, realizing the release or clamping of the workpiece, thereby reducing the number of driving components and reducing the assembly cost of the workpiece clamping device. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the workpiece clamping device provided in this embodiment of the utility model;

[0024] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 This is a schematic diagram of the transmission gear and limiting assembly of the workpiece clamping device provided in this embodiment of the utility model;

[0026] Figure 4 This is a top view of the transmission gear and limiting assembly of the workpiece clamping device provided in this embodiment of the utility model;

[0027] Figure 5 yes Figure 4 A cross-sectional view along line AA in the middle.

[0028] The following are the labeling elements in the figure:

[0029] 10—Base; 11—Slide rail; 20—Clamping bracket

[0030] 21—Base plate 22—Connecting frame 23—Clamping block

[0031] 24—Support frame; 30—Transmission gear; 40—First rack

[0032] 50—Second rack; 60—Driver; 70—Limit assembly

[0033] 71—Fixed disc; 72—Spinning shaft; 73—Spinning bearing

[0034] 74—Bracket 75—Limiting Wheel 76—Locking Nut

[0035] 77—Spacer 231—Rubber pad 232—Straight groove. Detailed Implementation

[0036] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0037] The present invention provides a workpiece clamping device. By setting a transmission structure connecting two sets of clamping modules, when one set of clamping modules slides, it can drive the other set of clamping modules to slide synchronously. Thus, the clamping device only needs to set a driving component to drive any clamping module to clamp the workpiece, reducing the number of driving components and lowering the assembly cost of the workpiece clamping device, thereby solving the technical problem of high assembly cost of workpiece clamping devices in the prior art.

[0038] like Figure 1-2 As shown, the workpiece clamping device of this utility model embodiment includes a base 10, two sets of clamping frames 20, a transmission gear 30, a first rack 40, a second rack 50, and a driving member 60. The two sets of clamping frames 20 are arranged opposite to each other and slidably connected to the base 10. The transmission gear 30 is rotatably connected to the base 10 and located between the two sets of clamping frames 20. The first rack 40 is fixed to one set of clamping frames 20 and meshes with one side of the transmission gear 30. The second rack 50 is fixed to the other set of clamping frames 20 and meshes with the other side of the transmission gear 30. The driving member 60 is drivenly connected to one set of clamping frames 20 and is used to drive the two sets of clamping frames 20 closer to or further apart by driving the set of clamping frames 20.

[0039] Specifically, the workpiece clamping device comprises a base 10, two sets of clamping frames 20, a transmission gear 30, a first rack 40, a second rack 50, and a driving component 60. The clamping device can be fixed on the worktable via the base 10. The two sets of clamping frames 20 are slidably connected to the base 10. During workpiece clamping, the workpiece is clamped by the mutual approach of the two sets of clamping frames 20. Since the workpiece clamping device also includes a transmission gear 30, a first rack 40, and a second rack 50, the transmission gear 30 is located between the two sets of clamping frames 20, and the first rack 40 and second rack 50 are driven by a driving component 60. The second rack 50 is fixed to the two sets of clamping frames 20 and meshes with both sides of the transmission gear 30. Through this structure, when one set of clamping frames 20 slides, the other set of clamping frames 20 can be driven to slide through the transmission gear 30, the first rack 40 and the second rack 50. Therefore, the driving component 60 is driven to slide by connecting to one set of clamping frames 20 and driving the clamping frame 20 to slide, so that the two sets of clamping frames 20 can slide synchronously, realize the release or clamping of the workpiece, thereby reducing the number of driving components 60 and reducing the assembly cost of the workpiece clamping device.

[0040] Understandably, the base 10 can be any seat structure that can be fixed on the workbench and allows the two sets of clamps 20 to slide.

[0041] In this embodiment, as Figure 1 As shown, slide rails 11 are provided on both sides of the base 10, and the clamp 20 is slidably connected to the slide rails 11 by a slider.

[0042] Understandably, the clamping frame 20 can be any frame structure, such as plates or rods, that clamps the workpiece by being close to each other.

[0043] In one embodiment, such as Figure 1 As shown, both sets of clamping frames 20 include a base plate 21, a connecting frame 22, and two sets of clamping blocks 23. The base plate 21 is slidably connected to the base 10, the connecting frame 22 is fixed to the base plate 21, and the two sets of clamping blocks 23 are respectively fixed to both sides of the connecting frame 22, for clamping the workpiece by the proximity of the two sets of clamping frames 20. Specifically, the base plate 21 can realize the slidable connection between the clamping frame 20 and the base, and the clamping blocks 23 can be extended through the connecting frame 22 and fixed to the base plate 21. The two sets of clamping frames 20 jointly clamp the workpiece through the two sets of clamping blocks 23 on both sides, thereby ensuring stable clamping of the workpiece.

[0044] In this embodiment, the two sets of clamping frames 20 mainly clamp workpieces with circular cross sections, such as pipes and cylindrical workpieces, through clamping blocks 23.

[0045] In this embodiment, as Figure 1 As shown, a slider is provided on the top of the base plate 21, and the base plate 21 is slidably connected to the slide rail 11 through the slider.

[0046] In one embodiment, such as Figure 1 As shown, the clamping port of the clamping block 23 is provided with a rubber pad 231. Specifically, the clamping block 23 achieves clamping of the cylindrical workpiece by limiting the clamping port at its end, and the rubber pad 231 can protect the clamped workpiece and prevent damage to it.

[0047] In one embodiment, such as Figure 1 As shown, the clamping block 23 is provided with a straight groove 232, and the clamping block 23 is fixed to the connecting frame 22 by bolts passing through the straight groove 232. Specifically, the clamping block 23 can be adjusted in height by adjusting the straight groove 232, thereby adjusting the clamping position of the clamping frame 20 and better adapting to the clamping of the workpiece.

[0048] In one embodiment, such as Figure 1As shown, the clamping frame 20 also includes a support frame 24. One side of the support frame 24 is fixedly connected to the connecting frame 22, and the other side of the support frame 24 is located below the clamping block 23 and is fixedly connected to the clamping block 23 by bolts. Specifically, the clamping block 23 can be supported by the support frame 24 connecting one side of the clamping block 23, thereby further stabilizing the clamping block 23 and preventing the clamping block 23 from shifting due to the straight groove 232.

[0049] Understandably, the drive unit 60 can be a lead screw module. The lead screw module can be installed on the base 10 and connected to one of the clamps 20 to achieve synchronous drive of the two clamps 20.

[0050] In one embodiment, such as Figure 1 As shown, the driving component 60 is a hydraulic cylinder. The fixed end of the hydraulic cylinder is fixed to the connecting frame 22 of one set of clamping frames 20, and the driving end of the hydraulic cylinder is fixed to the connecting frame 22 of another set of clamping frames 20. The hydraulic cylinder drives the connected clamping frames 20 through the driving end, thereby realizing the synchronous movement of the two sets of clamping frames 20.

[0051] In one embodiment, such as Figures 1-5 As shown, the workpiece clamping device also includes a limiting component 70, which is fixed to the base 10 and located between the two sets of clamping frames 20. The transmission gear 30 is rotatably connected to the limiting component 70. Specifically, the limiting component 70 can provide a connection for the transmission gear 30, thereby limiting the transmission gear 30.

[0052] In one embodiment, such as Figures 1-5 As shown, the limiting assembly 70 includes a fixed disk 71, a rotating shaft 72, and a rotating bearing 73. The fixed disk 71 is fixed to the base 10, the rotating shaft 72 is fixed to the fixed disk 71, the rotating bearing 73 is sleeved on the rotating shaft 72, and the transmission gear 30 is fixed to the rotating bearing 73. Specifically, the fixed disk 71 can fix the rotating shaft 72 to the base, and the rotating bearing 73 can realize the rotational connection between the transmission gear 30 and the rotating shaft 72, reducing the friction between the transmission gear 30 and the rotating shaft 72, and limiting the axial direction of the transmission gear 30.

[0053] In one embodiment, such as Figures 1-5 As shown, the limiting assembly 70 also includes a bracket 74 and two limiting wheels 75. The bracket 74 is connected to the rotating shaft 72, and the two limiting wheels 75 are rotatably connected to both ends of the bracket 74 and respectively abut against the outer surfaces of the first rack 40 and the second rack 50. Specifically, by abutting against the outer surfaces of the first rack 40 and the second rack 50, the limiting wheels 75 can limit the first rack 40 and the second rack 50, ensuring that the first rack 40 and the second rack 50 are tightly engaged with the transmission gear 30, preventing the first rack 40 and the second rack 50 from disengaging from the transmission gear 30.

[0054] In one embodiment, such as Figures 1-5 As shown, the bracket 74 is slidably connected to the feed shaft 72 and can be slidably disengaged from the feed shaft 72. The limiting assembly 70 also includes a locking nut 76, which is threaded onto the feed shaft 72 to lock the bracket 74. Specifically, the above configuration allows for the disassembly and reassembly of the bracket 74 and the feed shaft 72, thereby facilitating the adjustment of the transmission gear 30 and the rack.

[0055] In one embodiment, such as Figure 5 As shown, the limiting component 70 also includes a spacer 77, which is sleeved on the feed shaft 72. The two ends of the spacer 77 abut against the feed bearing 73 and the bracket 74, respectively. Specifically, by setting the spacer 77, the feed bearing 73 can be locked at the same time as the bracket 74.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A workpiece clamping device, characterized in that, include: Base; Two sets of clamping frames are arranged opposite to each other and are slidably connected to the base; A transmission gear is rotatably connected to the base and located between the two sets of clamping frames; The first rack is fixed to one of the clamping frames and meshes with one side of the transmission gear; The second rack is fixed to another set of the clamping brackets and meshes with the other side of the transmission gear; and A driving component, which is drivenly connected to one of the sets of clamps, is used to drive the two sets of clamps to move closer or further apart.

2. The workholding device of claim 1 wherein, The workpiece clamping device also includes a limiting component, which is fixed to the base and located between the two sets of clamping frames, and the transmission gear is rotatably connected to the limiting component.

3. The workpiece clamping device according to claim 2, characterized in that, The limiting assembly includes a fixed disk, a rotating shaft, and a rotating bearing. The fixed disk is fixed to the base, the rotating shaft is fixed to the fixed disk, the rotating bearing is sleeved on the rotating shaft, and the transmission gear is fixed to the rotating bearing.

4. The workpiece clamping device according to claim 3, characterized in that, The limiting assembly also includes a bracket and two limiting wheels. The bracket is connected to the rotating shaft, and the two limiting wheels are rotatably connected to both ends of the bracket and respectively fit against the outer surfaces of the first rack and the second rack.

5. The workpiece clamping device according to claim 4, characterized in that, The bracket is slidably connected to the feed shaft and can be slidably disengaged from the feed shaft. The limiting component also includes a locking nut, which is threadedly connected to the feed shaft to lock the bracket.

6. The workpiece clamping device according to claim 5, characterized in that, The limiting component also includes a spacer sleeve, which is sleeved on the rotating shaft, and the two ends of the spacer sleeve abut against the rotating bearing and the bracket, respectively.

7. The workholding assembly of any of claims 1-6, wherein, Both sets of clamping frames include a base plate, a connecting frame, and two sets of clamping blocks. The base plate is slidably connected to the base, the connecting frame is fixed to the base plate, and the two sets of clamping blocks are respectively fixed to both sides of the connecting frame, for clamping the workpiece by the proximity of the two sets of clamping frames.

8. The workpiece clamping device according to claim 7, characterized in that, The clamping opening of the clamping block is equipped with a rubber pad.

9. The workholding assembly of claim 7 wherein, The clamping block is provided with a straight groove, and the clamping block is fixed to the connecting frame by bolts passing through the straight groove.

10. The workpiece clamping device according to claim 7, characterized in that, The clamping frame also includes a support frame, one side of which is fixedly connected to the connecting frame, and the other side of which is located below the clamping block and is fixedly connected to the clamping block by bolts.

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