CN216178611U

CN216178611U - Adjustable multipurpose follow fixture

Info

Publication number: CN216178611U
Application number: CN202122623458.0U
Authority: CN
Inventors: 刘设; 范振宇; 刘云鹏; 李帅; 关运升; 邓锐苗
Original assignee: Shenyang University of Technology
Current assignee: Shenyang University of Technology
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-04-05
Anticipated expiration: 2031-10-29

Abstract

The utility model belongs to the technical field of follower fixtures, and particularly relates to an adjustable multipurpose follower fixture. The adjustable multipurpose follow-up fixture has strong applicability and can clamp workpieces in various shapes. Comprises a bottom plate; a rotary seat is arranged on the bottom plate; a folding arm is arranged on the rotary seat, and a base is arranged on the folding arm; roll over the arm and include two bracing pieces of looks articulated: a long support rod and a short support rod; the free end of the long supporting rod is rotatably connected with the rotary seat through a first rotating shaft, and the free end of the short supporting rod is rotatably connected with the base through a second rotating shaft; the base is provided with a clamping jaw.

Description

Adjustable multipurpose follow fixture

Technical Field

The utility model belongs to the technical field of follower fixtures, and particularly relates to an adjustable multipurpose follower fixture.

Background

The pallet is used for workpieces which have irregular shapes and are inconvenient to automatically position, clamp and convey in automatic production of automatic production lines, machining centers, flexible manufacturing systems and the like. After the workpiece is installed and positioned on the pallet, the pallet is conveyed to each station by the conveying device. The pallet is generally positioned on the machine tool with its bottom plane and two positioning holes and clamped by a clamping mechanism of the machine tool table, thereby ensuring the relative position of the workpiece and the tool. When the requirement for the machining accuracy of the workpiece is high, the bottom plane of the pallet is often separated into a positioning base plane and a transportation base plane, so that the accuracy of the positioning base plane is protected. The following fixture belongs to the special fixture range, and the workpiece clamping part of the following fixture needs to be designed according to the shape and the technological requirements of the workpiece.

At present, the existing pallet is poor in universality because the pallet is only used for a specific workpiece. A following clamp is needed, which can meet the positioning and clamping requirements during the processing of various workpieces.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an adjustable multipurpose pallet. In order to achieve the purpose, the utility model adopts the following technical scheme that the device comprises a bottom plate; the device is characterized in that a rotating seat is arranged on the bottom plate; a folding arm is arranged on the rotary seat, and a base is arranged on the folding arm;

roll over the arm and include two bracing pieces of looks articulated: a long support rod and a short support rod; the free end of the long supporting rod is rotatably connected with the rotary seat through a first rotating shaft, and the free end of the short supporting rod is rotatably connected with the base through a second rotating shaft; the base is provided with a clamping jaw.

Furthermore, the number of the long supporting rods and the number of the short supporting rods are two, and the two long supporting rods and the two short supporting rods are symmetrically arranged; the two long supporting rods are both rotationally connected with the first rotating shaft, and the two short supporting rods are both rotationally connected with the second rotating shaft.

Furthermore, the free end of the long support rod is in damping rotary connection with the first rotating shaft (or rotating shaft), and the free end of the short support rod is in damping rotary connection with the second rotating shaft (or base); the long supporting rod is hinged with the short supporting rod in a damping rotation connection mode.

Furthermore, the clamping jaw comprises a plurality of clamping block units which are uniformly arranged along the circumference of the base, each clamping block unit comprises a sliding rail fixed on the base and a sliding block arranged on the sliding rail, and a push rod is fixed on the sliding block; and a jacking screw is arranged on the sliding block and is in threaded connection with the sliding block, and the jacking screw penetrates through the sliding block and then is in contact with the sliding rail.

Furthermore, limit stops are arranged at the front and the rear of the sliding rail to prevent the sliding block from derailing and coming out.

Furthermore, a clamping device for positioning the rotary seat is arranged on the bottom plate.

Furthermore, the clamping device comprises arc-shaped clamping blocks symmetrically arranged on two sides of the rotary seat, each arc-shaped clamping block comprises an arc-shaped block body, an adjusting stud is rotatably connected onto each arc-shaped block body, a threaded convex block is arranged on the bottom plate, the adjusting stud is in threaded connection with the threaded convex block, and the length of the stud is larger than the width of the threaded convex block.

Furthermore, a positioning hole is formed in the bottom plate.

Compared with the prior art, the utility model has the beneficial effects.

The adjustable multipurpose follow-up fixture has strong applicability and can clamp workpieces in various shapes.

Drawings

The utility model is further described with reference to the following figures and detailed description. The scope of the utility model is not limited to the following expressions.

Fig. 1 is a schematic perspective view of an embodiment.

Fig. 2 is a left side view of the embodiment.

Fig. 3 is a front view of an embodiment.

FIG. 4 is an isometric view of an arcuate clamping block according to an exemplary embodiment.

FIG. 5 is a partial cross-sectional view of an example embodiment arcuate clamping block.

In the figure, 1 is a positioning hole; 2 is a bottom plate; 3 is a rotary seat; 4 is a clamping device; 5 is a fixed nut; 6 is a long support rod; 7 is a connecting shaft; 8 is a short supporting rod; 9 is a base; 10 is a slide rail; 11, a jacking screw; 12 is a claw, 13 is a knob.

Detailed Description

As shown in fig. 1-5, the particular embodiment includes a base plate 2; a rotary seat 3 is arranged on the bottom plate 2; a folding arm is arranged on the rotary seat 3, and a base 9 is arranged on the folding arm; roll over the arm and include two bracing pieces of looks articulated: a long support rod 6 and a short support rod 8; the free end of the long support rod 6 is rotatably connected with the rotary seat 3 through a first rotating shaft, and the free end of the short support rod 8 is rotatably connected with the base 9 through a second rotating shaft; the base 9 is provided with a claw 12.

Preferably, the number of the long support rods 6 and the number of the short support rods 8 are two, and the two long support rods 6 and the two short support rods 8 are symmetrically arranged; the two long support rods 6 are both rotationally connected with the first rotating shaft, and the two short support rods 8 are both rotationally connected with the second rotating shaft.

In the first embodiment, the free end of the long support rod 6 is in damped rotary connection with the first rotary shaft (or rotary shaft), and the free end of the short support rod 8 is in damped rotary connection with the second rotary shaft (or base 9); the long support rod 6 is connected with the short support rod 8 in a damping rotation mode in a hinged mode (a third rotating shaft).

In the second specific embodiment, or the end parts (the first rotating shaft, the second rotating shaft and the third rotating shaft) of each rotating shaft are provided with fixing nuts 5, and the fixing nuts 5 are in threaded connection with the shaft ends of the corresponding rotating shafts; used for locking and positioning.

More preferably, the width of the two long support bars 6 is smaller than that of the base 9, and the width of the two short support bars 8 is smaller than that of the two support bars; the rotary seat 3 is fixed with a convex block, and when the base 9 is stored to a horizontal state and above the rotary seat 3, the convex block is used as a cushion block for keeping the base 9 horizontal.

Preferably, the jaw 12 includes a plurality of fixture block units uniformly arranged along the circumference of the base 9, the fixture block units include a slide rail 10 fixed on the base 9, and a slide block arranged on the slide rail 10, and a push rod is fixed on the slide block; and a jacking screw 11 is arranged on the sliding block, the jacking screw 11 is in threaded connection with the sliding block, and the jacking screw 11 penetrates through the sliding block and then is in contact with the sliding rail 10. When in use, a part to be clamped is placed at the center of the circular base 9, each ejector rod is radial, and the part is tightly ejected and fixed from each direction to realize clamping.

Preferably, the slide rail 10 is provided with limit stoppers at the front and the rear to prevent the slide block from derailing.

Preferably, a clamping device 4 for positioning the rotary seat 3 is arranged on the bottom plate 2.

More preferably, the clamping device 4 comprises arc-shaped clamping blocks symmetrically arranged on two sides of the rotary seat 3, each arc-shaped clamping block comprises an arc-shaped block body, an adjusting stud is rotatably connected to each arc-shaped block body, a threaded convex block is arranged on the bottom plate 2, the adjusting stud is in threaded connection with the threaded convex block, and the length of each stud is larger than the width of the threaded convex block. When the adjustable stud bolt is specifically implemented, an accommodating space for accommodating the adjustable stud bolt is arranged in the arc-shaped clamping block, one end of the adjustable stud bolt penetrates through the accommodating space of the arc-shaped clamping block, and then the end part of the stud bolt is rotatably connected with the clamping block, so that the adjustable stud bolt can freely rotate relative to the accommodating space. The other end of the stud can be externally provided with a cap body according to needs, so that the adjusting stud forms a knob. The process of realizing clamping comprises the following steps: through rotatory knob 13, make the rectangle screw thread on the knob 13 along the screw thread lug slow movement on the bottom plate 2, and then drive the motion of whole clamping device 4, realize being close to or keeping away from bottom swivel mount 3, accomplish the process of pressing from both sides tightly or relaxing.

Specifically, 1, bottom swivel mount 3 and clamping device 4 placed horizontally with it, bottom swivel mount 3 can use the center as the origin, carries out 360 degrees rotations in situ, so can adjust the orientation that whole device centre gripping through rotatory bottom swivel mount 3.

2. The bottom swivel mount 3 and the clamping device 4 have certain roughness, and the bottom swivel mount 3 can be fixed by friction force through tightening the clamping device 4.

3. The bracing piece comprises respectively two of long and short bracing pieces 8, is connected by connecting axle 7 between long and short bracing piece 8, can set level chuck (being base 9) part, and the bracing piece is used for connecting swivel mount 3 part and chuck part to can adjust the height and the angle of chuck, combine base 9 can adjust the centre gripping direction of whole anchor clamps.

4. The eight claws 12 can move back and forth along the direction of the slide rail 10 to clamp workpieces with various shapes.

5. The short support bar 8 is horizontally disposed shorter than the projection on the base plate 2 in the case where the long support bar 6 is horizontally disposed so that the eight-jaw chuck section can be parallel to the base plate 2.

6. Every 45 degrees above the base 9 are provided with a slide rail 10, the claws 12 can freely adjust the position on the guide rail by loosening the jacking screws 11, and each claw 12 does not influence each other and needs to adjust the position independently.

The working principle is as follows: an operator firstly fixes a bottom plate 2 of a pallet and other conveying appliances through a positioning hole 1, and then determines the direction and the position of a workpiece to be processed in the processing or assembling process; the bottom rotary seat 3 is rotated to adjust the horizontal direction of the base 9 to a required direction, and then the bottom rotary seat 3 is fixed by tightening the clamping device 4 so as to be incapable of rotating. The height of the eight-claw chuck is changed by adjusting the angle between the long support rod 6 and the short support rod 8 and the horizontal plane according to the position of the processing machine, and all the fixing nuts 5 are screwed to fix the height; then, the angle between the base 9 and the short support rod 8 is adjusted, and the fixing nut 5 is screwed to complete the adjustment of the position and the direction. And finally, moving all the clamping claws 12 along the slide rail 10 to the outside of the circle center, placing the workpiece to be clamped in the center of the base 9, fitting the clamping claws 12 to the workpiece along the slide rail 10 one by one, and screwing the adjusting studs to finish clamping. After the workpiece is clamped, the workpiece can be machined or assembled along with a production line along with conveying appliances such as trays, when the machining position needs to be changed or the part needs to be changed, the adjusting stud is unscrewed, the machined surface is changed or the workpiece is changed after the workpiece is taken down, and the process that the clamping jaws 12 clamp the workpiece is repeatedly used to complete the surface changing or part changing operation.

The utility model is suitable for various conditions needing the pallet, and can clamp workpieces in various shapes. The adjustable multipurpose follow-up clamp is not designed for clamping a single workpiece, the clamping function is realized through the chuck with eight clamping jaws 12, the clamping jaws 12 with moderate quantity can meet the shape requirements of most workpieces, and the problem of complex installation caused by too many clamping jaws 12 is also avoided.

The base 9 which can rotate is adopted at the bottom of the utility model, the purpose that the base can rotate 360 degrees except the bottom plate 2 which is fixed on the tray is realized, and the height and the inclination of the chuck can be changed by the supporting rod part. The whole pallet can clamp positions in various directions without replacing special jigs with different shapes due to different processing positions.

The utility model has strong universality, can save the process of replacing the clamp when replacing the workpiece and eliminate the waste of actions.

The folding clamp is simple in structure, can be folded, is more regular relative to special clamps with different shapes, and saves occupied space.

The clamping device has the advantages of simple structure, position adjustment, strong universality and simple operation, can clamp and convey workpieces of different shapes, and can immediately clamp different workpieces to continue the process of machining or assembling without replacing the pallet in the production process after the machining or assembling of a certain workpiece is finished.

It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the utility model.

Claims

1. An adjustable multipurpose pallet comprising a base plate; the method is characterized in that: a rotary seat is arranged on the bottom plate; a folding arm is arranged on the rotary seat, and a base is arranged on the folding arm;

2. The adjustable multi-purpose pallet of claim 1, wherein: the number of the long supporting rods and the number of the short supporting rods are two, and the two long supporting rods and the two short supporting rods are symmetrically arranged; the two long supporting rods are both rotationally connected with the first rotating shaft, and the two short supporting rods are both rotationally connected with the second rotating shaft.

3. The adjustable multi-purpose pallet of claim 1, wherein: the free end of the long support rod is in damped rotary connection with the first rotary shaft, and the free end of the short support rod is in damped rotary connection with the second rotary shaft; the long supporting rod is hinged with the short supporting rod in a damping rotation connection mode.

4. The adjustable multi-purpose pallet of claim 1, wherein: the clamping jaw comprises a plurality of clamping block units which are uniformly arranged along the circumference of the base, each clamping block unit comprises a sliding rail fixed on the base and a sliding block arranged on the sliding rail, and a mandril is fixed on the sliding block; and a jacking screw is arranged on the sliding block and is in threaded connection with the sliding block, and the jacking screw penetrates through the sliding block and then is in contact with the sliding rail.

5. The adjustable multi-purpose pallet of claim 4, wherein: and limit stops are arranged at the front and the rear of the slide rail.

6. The adjustable multi-purpose pallet of claim 1, wherein: and a clamping device for positioning the rotary seat is arranged on the bottom plate.

7. The adjustable multi-purpose pallet of claim 6, wherein: the clamping device comprises arc-shaped clamping blocks symmetrically arranged on two sides of the rotary seat, each arc-shaped clamping block comprises an arc-shaped block body, an adjusting stud is rotatably connected to each arc-shaped block body, a threaded convex block is arranged on the bottom plate, the adjusting stud is in threaded connection with the threaded convex block, and the length of the stud is larger than the width of the threaded convex block.

8. The adjustable multi-purpose pallet of claim 1, wherein: the bottom plate is provided with a positioning hole.