CN212095406U

CN212095406U - Clamp and clamping device

Info

Publication number: CN212095406U
Application number: CN202020246211.4U
Authority: CN
Inventors: 任喜东; 王波; 陈忠伟; 肖伟伟; 郭启军; 黄俊花; 高云峰
Original assignee: Shenzhen Han's Precision Cutting Software Technology Co ltd; Han s Laser Technology Industry Group Co Ltd
Current assignee: Shenzhen Han's Precision Cutting Software Technology Co ltd; Han s Laser Technology Industry Group Co Ltd
Priority date: 2019-10-16
Filing date: 2020-03-03
Publication date: 2020-12-08
Anticipated expiration: 2030-03-03

Abstract

The utility model provides an anchor clamps and clamping device. The clamp comprises a base, a pressing block, two pressing heads and a hydraulic cylinder. Two limiting holes for accommodating two workpieces are formed in the base. The pressing block is positioned between the two limiting holes. The two pressure heads are respectively and movably arranged on two sides of the pressing block and correspond to the two limiting holes. The two rams are rotatable about a first axis. The hydraulic cylinder comprises a piston rod movably arranged on the base in a penetrating mode, and the piston rod can move along a second shaft perpendicular to the first shaft. The pressing block is arranged on the piston rod and can rotate around a third shaft perpendicular to the first shaft and the second shaft. The pneumatic cylinder drive pressure block removes to drive the pressure head and be close to or keep away from spacing hole.

Description

Clamp and clamping device

Technical Field

The utility model relates to an anchor clamps technical field especially relates to an anchor clamps and clamping device.

Background

Under the conditions that the precision requirement of machining elements is high and the specification and the size of supplied materials are unstable, the small-sized workpiece of the automobile provides strict requirements for positioning and clamping of the tool, and the traditional clamp generally adopts air cylinders and plane pressing and ejector blocks for jacking, so that the requirements on machining efficiency and quality cannot be met.

SUMMERY OF THE UTILITY MODEL

According to various embodiments of the present application, a clamp and a clamping device are provided.

A clamp, comprising: base, briquetting, two pressure heads and pneumatic cylinder. Two limiting holes for accommodating two workpieces are formed in the base. The pressing block is positioned between the two limiting holes. The two pressure heads are respectively and movably arranged on two sides of the pressing block and correspond to the two limiting holes. The two rams are rotatable about a first axis. The hydraulic cylinder comprises a piston rod movably arranged on the base in a penetrating mode, and the piston rod can move along a second shaft perpendicular to the first shaft. The pressing block is arranged on the piston rod and can rotate around a third shaft perpendicular to the first shaft and the second shaft. The pneumatic cylinder drive pressure block removes to drive the pressure head and be close to or keep away from spacing hole.

In one embodiment, one side of the limiting hole close to the pressure head is provided with a notch facilitating the protrusion of the workpiece.

In one embodiment, the other side of the limiting hole relative to the notch is provided with an avoiding groove.

In one embodiment, the middle part of the limiting hole is also provided with a first clearance groove.

In one embodiment, the pressing surface of the pressure head is provided with a second clearance groove.

A clamping device comprises a supporting seat, a base plate and a top plate for supporting a workpiece. At least one clamp as described above is arranged on the substrate, and both the substrate and the top plate are arranged on the supporting seat. The hydraulic cylinder and the base are respectively arranged on two sides of the base plate. The top plate is located below the clamp.

In one embodiment, the top plate is provided with a limiting groove corresponding to the limiting hole, and when the workpiece is machined, one end of the workpiece is located in the limiting groove and abuts against the bottom of the limiting groove.

In one embodiment, the top plate is adjustably positioned on the support base.

In one embodiment, the supporting seat is provided with a mounting block, the mounting block is provided with a plurality of first adjusting holes with different heights, the top plate is provided with a second adjusting hole, and the height of the top plate is adjusted through fasteners penetrating through the second adjusting hole and the different first adjusting holes.

In one embodiment, the clamping device further comprises a frame and a drive mechanism mounted on the frame. The base plate is rotationally installed on the frame, and actuating mechanism drive base plate rotates around the fourth axle, the fourth axle with the primary shaft is parallel.

The details of one or more embodiments of the disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the disclosure will be apparent from the description and drawings, and from the claims.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain drawings of other embodiments based on these drawings without creative efforts.

FIG. 1 is a perspective view of two workpieces of different sizes.

FIG. 2 is a perspective view of a clamp in one embodiment.

Fig. 3 is a schematic top view of the fixture of fig. 2.

Fig. 4 is a perspective view of the base of fig. 2.

Fig. 5 is a perspective view of a clamping device in an embodiment.

Fig. 6 is a schematic front view of the clamping device of fig. 5.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, 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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Figure 1 shows two different length workpieces that need to be machined. The workpiece is substantially elongated in shape and substantially square in cross-section. During machining, a workpiece is clamped through the air cylinder, and then the workpiece is drilled. The existing clamp cannot stably clamp a workpiece, so that the workpiece is easy to separate from the machining head during machining, and the machining efficiency and the machining quality are affected.

As shown in fig. 2 and 5, the present invention provides a clamp 100, comprising: the device comprises a base 10, a pressing block 30, two pressing heads 20 and a hydraulic cylinder 40. Two limiting holes 11 for accommodating two workpieces are formed in the base 10. The pressing block 30 is located between the two limiting holes 11. The two pressing heads 20 are respectively movably arranged at two sides of the pressing block 30 and correspond to the two limiting holes 11. The two pressing heads 20 can rotate around the first shaft 1 and are respectively used for pressing workpieces in the two limiting holes 11. The hydraulic cylinder 40 includes a piston rod 3 movably inserted into the base 10, and the piston rod 3 is movable along a second axis 2 perpendicular to the first axis 1. The pressure piece 30 is mounted on the piston rod 3 and is rotatable about a third axis 4 perpendicular to the first axis 1 and the second axis 2. The hydraulic cylinder 40 drives the pressing block 30 to move, so that the pressing head 20 is driven to be close to or far away from the limiting hole 11.

In the above-described jig 100, the pressing is performed by replacing the air cylinder with the hydraulic cylinder 40, so that the pressure is higher and the clamping is more stable. Because the base 10 is provided with the two limiting holes 11, and the two pressing heads 20 are respectively movably arranged on two sides of the pressing block 30, the clamping of two workpieces can be realized at the same time, and the efficiency is higher. In addition, the pressing block 30 is installed on the piston rod 3 and can rotate around a third shaft 4 perpendicular to the first shaft 1 and the second shaft 2, so that the clamp can automatically adapt to the height difference of two workpieces to realize clamping, and the situation that the pressing block cannot be pressed due to the fact that the height difference of the two workpieces is too large is prevented. Because two pressure heads 20 are respectively and movably installed at two sides of the pressing block 30, the clamp can also automatically adapt to the height difference of the same workpiece to realize clamping, and the situation that the same workpiece cannot be pressed due to too large height difference is prevented. Through above-mentioned ingenious structure, the tight work piece of clamp that can be stable avoids leading to adding man-hour the work piece and deviating from along with the drill bit easily, improves machining efficiency and processingquality greatly.

In the present embodiment, two pressing heads 20 are movably installed at both sides of the pressing block 30, respectively, and are rotatable about the first shaft 1. The structure can be well suitable for two same workpieces and can also be suitable for two workpieces with height difference, and the pressing block 30 can rotate towards the workpieces with low height to realize the pressing of the two workpieces.

Specifically, the piston rod 3 penetrates through the base 10 and can move along the second shaft 2 perpendicular to the first shaft 1, the pressing block 30 is installed on the piston rod 3, and the hydraulic cylinder 40 drives the pressing block 30 to move, so that the pressing head 20 is driven to be close to or far away from the limiting hole 11, and a workpiece is pressed. During the actual clamping process, the automatic extension and retraction of the hydraulic cylinder 40 can be realized through a control circuit.

In order to avoid the over-positioning between the pressing head 20 and the workpiece, the pressing surface of the pressing head 20 is provided with a second clearance groove 21. Specifically, the second clearance groove 21 is provided in the middle of the pressing surface, so that two pressing surfaces with smaller areas are formed.

As shown in fig. 3 and 4, in the present embodiment, the limiting hole 11 may be a square hole. One side of the limiting hole 11 close to the pressure head 20 is provided with a notch 12 convenient for the workpiece to protrude. When the workpiece is placed in the limiting hole 11, the workpiece protrudes from the notch 12, so that the pressing head 20 can conveniently press the workpiece.

In this embodiment, the other side of the limiting hole 11 opposite to the notch 12 is opened with an avoiding groove 13. The avoiding groove 13 is mainly used for avoiding one corner of the workpiece, and is convenient for positioning two side surfaces of the workpiece. The middle part of the limiting hole 11 is also provided with a first clearance groove 14, so that the workpiece is ensured to be in complete contact with the limiting hole 11.

As shown in fig. 5, the present invention further provides a clamping device, which comprises a supporting base 200, a base plate 300 and a top plate 400 for supporting a workpiece. At least one jig 100 as described above is arranged on the base plate 300, the base plate 300 and the top plate 400 are both provided on the support base 200, and the hydraulic cylinder 40 and the base 10 are respectively installed on both sides of the base plate 300. The top plate 400 is located below the jig 100.

In this embodiment, four clamps 100 are arranged on the substrate 300, and each clamp 100 can clamp two workpieces, so that the whole clamping device can simultaneously clamp eight workpieces, thereby greatly increasing the number of clamped workpieces and improving the processing efficiency.

Specifically, the top plate 400 is provided with a limiting groove 410 corresponding to the limiting hole 11. When the workpiece is machined, one end of the workpiece is located in the limiting groove 410 and is abutted to the bottom of the limiting groove 410, so that supporting force is provided for the workpiece, machining is more stable, and machining quality is effectively improved. The number of the limiting holes 11 is equal to the number of the limiting grooves.

In order to adapt to workpieces with different lengths, the top plate 400 is arranged on the supporting seat 200 in a height-adjustable manner. The height of the top plate 400 may be raised when the workpiece is shorter and lowered when the workpiece is longer.

Referring to fig. 6, the supporting base 200 is provided with a mounting block 210, and the mounting block 210 is provided with a plurality of first adjusting holes 211 with different heights. The top plate 400 is provided with a second adjusting hole 420, and the height of the top plate 400 is adjusted by fasteners, such as screws or pins, penetrating through the second adjusting hole 420 and the different first adjusting holes 211.

In this embodiment, the mounting block 210 is provided with two first adjusting holes 211 with different heights, that is, the height of the top plate can be adjusted to two positions, which are respectively suitable for short workpieces and long workpieces. Of course, the number of the first adjusting holes 211 can be set according to actual needs.

In order to realize multi-angle processing of the workpiece, the supporting seat 200 is provided with a frame 220 and a driving mechanism 500 installed on the frame 220. The base plate 300 is rotatably mounted on the frame 220. The driving mechanism 500 drives the base plate 300 to rotate about a fourth axis, which is parallel to the first axis 1.

Taking the longer workpiece on the right side of fig. 1 as an example, it requires not only drilling but also milling. Therefore, the driving mechanism 500 is required to drive the workpiece to rotate to accommodate the milling of the side surface.

In this embodiment, the supporting base 200 is a table, and the driving mechanism 500 is preferably a motor. The hydraulic cylinder 40 and the base 10 are respectively installed at both sides of the base plate 300, which is advantageous for balancing both sides of the base plate 300, so that the base plate 300 is more stably rotated.

The clamping device can stably clamp a plurality of workpieces, multi-station processing is realized, the processing efficiency is improved, and the problem of low processing efficiency of the existing small automobile parts is solved.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A clamp, comprising:

the device comprises a base, a clamping device and a clamping device, wherein two limiting holes for accommodating two workpieces are formed in the base;

the pressing block is positioned between the two limiting holes;

the two pressure heads are respectively and movably arranged on two sides of the pressing block and correspond to the two limiting holes, and the two pressure heads can rotate around a first shaft; and

the hydraulic cylinder comprises a piston rod movably arranged on the base in a penetrating mode, the piston rod can move along a second shaft perpendicular to the first shaft, and the pressing block is installed on the piston rod and can rotate around a third shaft perpendicular to the first shaft and the second shaft; the hydraulic cylinder drives the pressing block to move, so that the pressing head is driven to be close to or far away from the limiting hole.

2. The clamp of claim 1, wherein a notch is formed in one side of the limiting hole close to the pressure head for facilitating the protrusion of the workpiece.

3. The clamp of claim 2, wherein an avoiding groove is formed on the other side of the limiting hole relative to the notch.

4. The clamp of claim 2, wherein the middle of the limiting hole is further provided with a first clearance groove.

5. The clamp of claim 4, wherein the pressing surface of the pressing head is provided with a second clearance groove.

6. A clamping device comprising a support base, a base plate and a top plate for supporting a workpiece, wherein at least one clamp according to any one of claims 1 to 5 is arranged on the base plate, the base plate and the top plate are both disposed on the support base, the hydraulic cylinder and the base are respectively mounted on both sides of the base plate, and the top plate is located below the clamp.

7. The clamping device as claimed in claim 6, wherein the top plate is provided with a limiting groove corresponding to the limiting hole, and when the workpiece is machined, one end of the workpiece is located in the limiting groove and abuts against the bottom of the limiting groove.

8. A holding arrangement as claimed in claim 6, wherein the top plate is height-adjustably arranged on the support base.

9. The clamping device as claimed in claim 8, wherein the supporting base has a mounting block, the mounting block has a plurality of first adjusting holes with different heights, the top plate has a second adjusting hole, and the height of the top plate is adjusted by a fastening member inserted through the second adjusting hole and the different first adjusting holes.

10. The clamping device of claim 6 further comprising a frame and a drive mechanism mounted on said frame, said base plate being rotatably mounted on said frame, said drive mechanism driving said base plate to rotate about a fourth axis, said fourth axis being parallel to said first axis.