TWM459944U - Universal workpiece clamping device - Google Patents

Description

Universal workpiece holding device

The present invention relates to a clamping device, and more particularly to a universal workpiece clamping device.

At present, the processing machine used in the market has a clamping device mainly having three jaws which are released away or close to each other to produce a loosening or clamping effect. However, such a clamping device is only suitable for clamping. If the workpiece is in the shape of a circle, a regular polygon, or the like, it is not easy to be clamped to a workpiece having a wide shape, a flat shape, or a relatively asymmetrical shape, so there is still room for improvement.

Therefore, the object of the present invention is to provide a universal working clamping device which can easily hold a workpiece having a wide and flat shape and has a good clamping effect.

Therefore, the novel universal workpiece clamping device comprises a fixing unit, a clamping unit, a first synchronization unit, a second synchronization unit, and a driving unit.

The fixing unit comprises a base, and a central seat disposed on the base and extending along an axis, the central seat having a pair of first claw grooves respectively disposed along a first radial direction, and a pair of respectively a second claw groove disposed perpendicular to the first radial direction.

The clamping unit includes a pair of first jaws respectively slidably disposed on the first claw grooves, and a pair of second jaws slidably disposed on the second claw grooves, respectively.

The first synchronization unit is slidably disposed on the center seat to drive the first jaws closer to or away from each other.

The second synchronization unit is slidably disposed on the center seat to drive the second jaws closer to or away from each other.

The driving unit includes a first driving member disposed on the base and connected to the first synchronization unit, and a second driving member disposed on the base and connected to the second synchronization unit.

The utility model has the advantages that the first synchronizing unit and the second synchronizing unit respectively drive the first clamping jaws and the second clamping jaws to relax and clamp, so that the clamping cross-sectional shape is facilitated Circular, regular-polygon workpieces, which can also hold workpieces of different widths, flat shapes, etc., to greatly enhance the practicality.

2‧‧‧Fixed unit

21‧‧‧Base

22‧‧‧ center seat

221‧‧‧ Body Department

222‧‧‧Track Department

223‧‧‧First claw groove

224‧‧‧Second claw groove

23‧‧‧Shell

231‧‧ ‧ guide slot

3‧‧‧Clamping unit

31‧‧‧First jaw

32‧‧‧second jaw

4‧‧‧First synchronization unit

41‧‧‧First drive ring

42‧‧‧First slider

421‧‧‧First groove

43‧‧‧First swinging piece

431‧‧‧First swinging lever

432‧‧‧First bolt

5‧‧‧Second synchronization unit

51‧‧‧Second drive ring

52‧‧‧Second slider

521‧‧‧second groove

53‧‧‧Second swinging piece

531‧‧‧First swinging lever

532‧‧‧First pin

6‧‧‧Drive unit

61‧‧‧First drive

611‧‧‧First pressure cylinder

612‧‧‧First cylinder

613‧‧‧First telescopic rod

614‧‧‧ First link pin

61’‧‧‧First drive

611'‧‧‧First servo motor

612’‧‧‧ First Link

613’‧‧‧First screw

62‧‧‧second drive

621‧‧‧Second pressure cylinder

622‧‧‧Second cylinder

623‧‧‧Second telescopic rod

624‧‧‧Second link pin

62’‧‧‧second drive

621’‧‧‧Second servo motor

622’‧‧‧Second Link

623’‧‧‧Second screw

L‧‧‧ axis

R1‧‧‧ first radial

R2‧‧‧second radial

100‧‧‧Workpiece

The other features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the drawings. FIG. 1 is a perspective view of a first preferred embodiment of the present invention. 2 is another perspective view of the first preferred embodiment; FIG. 3 is a side view of the first preferred embodiment; FIG. 4 is an exploded perspective view of the first preferred embodiment; A cross-sectional view of a 3-wire VV illustrating a second synchronization unit Driving the connection relationship with the two second jaws of a clamping unit; FIG. 6 is a cross-sectional view taken along line VI-VI of FIG. 3, illustrating the connection relationship between a first synchronization unit and the first jaws of the clamping unit Fig. 7 is a schematic view showing the operation of the first preferred embodiment, illustrating the state of holding a workpiece; and Fig. 8 is a schematic view showing a second preferred embodiment of the novel workpiece holding device of the present invention.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1, FIG. 2, FIG. 3, and FIG. 4, a first preferred embodiment of the universal workpiece holding device comprises a fixing unit 2, a clamping unit 3, a first synchronization unit 4, and a The second synchronization unit 5 and a drive unit 6.

The fixing unit 2 includes a base 21, a central seat 22 disposed on the base 21 and extending along an axis L, and a housing 23 disposed on the base 21 for receiving the central seat 22.

The center seat 22 has a body portion 221 extending along the axis L, a plurality of rail portions 222 respectively formed on the outer circumference of the body portion 221 and provided by the first synchronization unit 4 and the second synchronization unit 5, and a pair of respectively a first claw groove 223 disposed on the main body portion 221 and disposed along a first radial direction R1 and opposite to the opposite side of the axis L, and a pair respectively disposed on the body portion 221 and perpendicular to the first radial direction The second radial direction R2 of R1 is disposed and located on the second claw groove 224 on the opposite side of the axis L.

The housing 23 has a plurality of guide slots 231 that extend around the axis L and along the axis L, respectively.

The clamping unit 3 includes a pair of first jaws 31 respectively slidably disposed on the first claw grooves 223, and a pair of second jaws 32 slidably disposed on the second claw grooves 224, respectively. . The first jaws 31 are constrained by the first claw grooves 223 and can only move along the first radial direction R1, and the second jaws 32 are restricted by the second claw grooves 224. It can only move along the second radial direction R2.

The first synchronization unit 4 is slidably disposed between the housing seat 22 and the central seat 22 to drive the first jaws 31 closer to or away from each other, and includes a slidably The first driving ring 41 and the second driving sleeves 41 are respectively slidably disposed on the rail portions 222 of the center seat 22 and connected to the first slider 42 of the first driving ring 41, and two respectively The first swinging member 43 is pivotally connected to the central seat 22 and connected to the first slider 42 and the first jaws 31.

Each of the first sliders 42 has a first recess 421 recessed in the bottom portion. Each of the first swinging members 43 has a pair of ends connected to the first recess 421 and the first jaw 31 respectively. The first swinging lever 431 is formed in an L shape, and the first latch 432 is inserted into the middle of the first swinging lever 431 and is inserted into the central seat 22.

The second synchronization unit 5 is slidably disposed between the housing seat 22 and the center base 22 to drive the second jaws 32 closer to or away from each other, and includes a slidably The second driving ring 51 and the second sleeves disposed on the center seat 22 are slidably disposed on the center seat 22, respectively. The rails 222 are connected to the second sliders 52 of the second driving ring 51, and are respectively pivotally mounted to the central base 22 and connected to the second sliders 52 and the second jaws 32. The second swinging member 53.

Each of the second sliders 52 has a second recess 521 recessed in the bottom portion. Each of the second swinging members 53 has a second end connected to the second recess 521 and the second clamping jaw 32 respectively. The second swinging lever 531 is formed in an L shape, and a second latch 532 is disposed in the middle of the second swinging lever 531 and is inserted into the center seat 22 .

The driving unit 6 includes a first driving member 61 disposed on the base 21 and connected to the first synchronization unit 4, and a second driving member disposed on the base 21 and connected to the second synchronization unit 5. 62.

The first driving member 61 has a pair of first pressure cylinders 611 respectively located on opposite sides of the center seat 22, and the second driving member 62 has a pair of second pressure cylinders 621 respectively located on opposite sides of the center seat 22.

Each of the first cylinders 611 has a first cylinder 612 connected to the base 21, a first telescopic rod 613 connected to the first cylinder 612, and a first slot 231 connected to the base 231 and connected a first joint pin 614 between the first telescopic rod 613 and the first drive ring 41. Each of the second cylinders 621 has a second cylinder 622 fixed to the base 21, a second telescopic rod 623 connected to the second cylinder 622, and one of the guide slots 231 A second connecting pin 624 is connected between the second telescopic rod 623 and the second driving ring 51.

Referring to Figures 4, 5, and 6, in operation, the first cylinder 612 and the second cylinders 622 can respectively drive the first telescopic rods. The second telescopic rod 623 and the second telescopic rods 623 are telescopically moved forward and backward along the guide grooves 231 to move the first drive ring 41 and the second drive ring 51 to move, thereby allowing the pivoting of the first drive ring 41 and the second drive ring 51. The first swinging lever 431 and the second swinging lever 531 respectively generate a yaw with the first latch 432 and the second latches 532 as a center of rotation, so as to push the first jaws 31 and the like respectively. The second jaws 32 are adjacent to or away from each other along the first claw grooves 223 and the second claw grooves 224, so that the first jaws 31 and the second jaws 32 can be Clamping or loosening independently of each other and asynchronously, so as to facilitate clamping of a workpiece 100 (Fig. 7) of a wide and flat shape, is highly practical in clamping.

Referring to FIG. 8, a second preferred embodiment of the universal workpiece holding device is substantially the same as the first preferred embodiment, except that the first driving member 61' has a The first connecting piece 612' connected to the first driving ring 41 and the second connecting piece 612' respectively connected to the first servo motor 611' and the first connecting piece 612' a second driving member 62' has a pair of second servo motors 621', two second connecting pieces 622' respectively connected to the second driving ring 52, and two connected to the second servos respectively The motor 621' and the second screw 623' of the second connecting piece 622'. The first drive motor 41 and the second drive motor 51 are driven by the first servo motor 611' and the second servo motor 612' to control the clamping unit 3 to perform an opening and closing operation.

In summary, the novel universal workpiece clamping device has the following Advantages and effects: the first swinging levers 431 of the first synchronizing unit 4 and the second swinging levers 531 of the second synchronizing unit 5 respectively drive the first clamping jaws 31 and the second clamping jaws 32 along the first claw grooves 223 and the second claw grooves 224 are close to or away from each other for clamping or loosening action, thereby facilitating not only clamping the workpiece having a circular or regular polygonal cross-sectional shape. It can also hold workpieces of different widths, flat shapes, etc., to greatly enhance the practicality.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made in accordance with the scope of the present patent application and the contents of the patent specification, All remain within the scope of this new patent.

2‧‧‧Fixed unit

21‧‧‧Base

22‧‧‧ center seat

221‧‧‧ Body Department

222‧‧‧Track Department

223‧‧‧First claw groove

224‧‧‧Second claw groove

23‧‧‧Shell

231‧‧ ‧ guide slot

3‧‧‧Clamping unit

31‧‧‧First jaw

32‧‧‧second jaw

4‧‧‧First synchronization unit

41‧‧‧First drive ring

42‧‧‧First slider

421‧‧‧First groove

43‧‧‧First swinging piece

431‧‧‧First swinging lever

432‧‧‧First bolt

5‧‧‧Second synchronization unit

51‧‧‧Second drive ring

52‧‧‧Second slider

521‧‧‧second groove

53‧‧‧Second swinging piece

531‧‧‧First swinging lever

532‧‧‧First pin

6‧‧‧Drive unit

611‧‧‧First pressure cylinder

612‧‧‧First cylinder

613‧‧‧First telescopic rod

614‧‧‧ First link pin

621‧‧‧Second pressure cylinder

622‧‧‧Second cylinder

623‧‧‧Second telescopic rod

624‧‧‧Second link pin

L‧‧‧ axis

R1‧‧‧ first radial

R2‧‧‧second radial

Claims (7)

A universal workpiece holding device comprises: a fixing unit comprising a base, and a central seat disposed on the base and extending along an axis, the central seat having a pair respectively disposed along a first radial direction a first claw groove, and a pair of second claw grooves respectively disposed along a second radial direction perpendicular to the first radial direction; a clamping unit including a pair of slidably disposed on the first claws a first jaw of the slot, and a pair of second jaws respectively slidably disposed on the second claw slots; a first synchronization unit slidably disposed on the center seat to drive the first clamps The claws are adjacent to or away from each other; a second synchronization unit is slidably disposed on the center seat to drive the second jaws toward or away from each other; and a driving unit includes a base disposed on the base and connected thereto a first driving member of the first synchronization unit, and a second driving member disposed on the base and connected to the second synchronization unit. The universal workpiece clamping device of claim 1, wherein the first synchronization unit comprises a first driving ring disposed on the central base, and two slidably disposed on the central seat and connected to the first a first slider of a driving ring, and a first swinging member respectively pivoted to the central seat and connected to the first slider and the first clamping jaws, the second synchronization unit comprising a set of The second driving ring and the second sliding ring are respectively slidably disposed on the central seat and connected to the second sliding block of the second driving ring, and the two are respectively pivoted to the central seat and connected to the second sliding Block with the second clip The second swinging member of the claw. The universal workpiece holding device of claim 2, wherein the fixing unit further comprises a housing disposed on the base and received by the central seat, the housing having a plurality of guide slots. The universal workpiece holding device of claim 3, wherein the first synchronization unit is interposed between the housing and the center seat, and the second synchronization unit is interposed between the housing and the center seat. The first driving member has a pair of first pressure cylinders, and the second driving member has a pair of second pressure cylinders, each of the first pressure cylinders has a first cylinder connected to the base, and one connected to the first cylinder a first telescopic rod of a cylinder, and a first connecting pin disposed in one of the guiding slots and connected between the first telescopic rod and the first driving ring, each second cylinder has a fixing a second cylinder of the base, a second telescopic rod connected to the second cylinder, and a second slot disposed between the second telescopic rod and the second drive ring Second joint pin. The universal workpiece holding device of claim 2, wherein the center seat further has a body portion, and the plurality of portions are respectively formed on an outer circumference of the body portion for the first slider and the second slider Set the rail section. The universal workpiece holding device of claim 2, wherein each of the first sliders has a first recess recessed in the bottom portion, and each of the first swinging members has a first end connected to the first end a first swinging rod of the groove and the first clamping jaw, and a first bolt inserted through the middle portion of the first swinging rod and inserted into the central seat, each second sliding sleeve has a recessed bottom a second groove, each of the second oscillating members has a second oscillating rod respectively connected to the second groove and the second clamping jaw, and a second oscillating rod is disposed a second latch in the middle of the pole and plugged into the central seat. The universal workpiece holding device of claim 3, wherein the first synchronization unit is interposed between the housing and the center seat, and the second synchronization unit is interposed between the housing and the center seat. The first driving member has a pair of first servo motors, two first connecting pieces respectively connected to the first driving ring, and two first screws respectively connected to the first servo motors and the first connecting pieces The second driving member has a pair of second servo motors, two second connecting pieces respectively connected to the second driving ring, and two second connected to the second servo motors and the second connecting pieces respectively Screw.