CN209919640U

CN209919640U - Clamp

Info

Publication number: CN209919640U
Application number: CN201920648969.8U
Authority: CN
Inventors: 邹辉庭; 缪勇
Original assignee: Guangdong Topstar Technology Co Ltd
Current assignee: Guangdong Topstar Technology Co Ltd
Priority date: 2019-05-08
Filing date: 2019-05-08
Publication date: 2020-01-10
Anticipated expiration: 2029-05-08

Abstract

The utility model belongs to the technical field of machining equipment, a anchor clamps is disclosed. The fixture comprises a frame; the inner support assembly is rotatably connected to the rack and comprises a first driving piece, an expansion sleeve and a conical rod, the output end of the first driving piece is connected with the conical rod, the expansion sleeve is inserted into an inner hole of the workpiece, the conical rod can be inserted into the expansion sleeve, and the expansion sleeve is configured to be capable of being tensioned in the inner hole of the workpiece when the first driving piece drives the conical rod to move towards the interior of the expansion sleeve; and the rotary driving assembly is respectively connected with the rack and the inner support assembly and is configured to drive the inner support assembly to rotate relative to the rack. The first driving piece drives the conical rod to move in the expansion sleeve, so that the expansion sleeve is tensioned in an inner hole of a workpiece, the workpiece is clamped quickly, and the clamping force is accurate; through setting up the rotation of the internal stay subassembly of the drive of the rotation driving subassembly, the workpiece can be processed in multiple directions, and the processing efficiency is improved.

Description

Clamp

Technical Field

The utility model relates to a machining equipment technical field especially relates to an anchor clamps.

Background

In the technical field of machining equipment, in order to make the surface of a workpiece highly smooth, the surface of the workpiece generally needs to be polished. Before polishing, the workpiece needs to be positioned and clamped firstly, and for a special-shaped workpiece, the positioning and clamping are difficult.

The workpiece such as a door handle is taken as an example for explanation, in the prior art, a universal clamp is usually adopted for clamping the workpiece, and the universal clamp can only be generally applied to the outer surface of the workpiece, so that the clamping force of the method is not easy to grasp, if the clamping force is insufficient, the door handle is easy to fall off during polishing, the processing progress is influenced, and potential safety hazards exist; if the clamping force is too large, the surface of the workpiece is easily damaged; and may interfere with the operation of the polishing apparatus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps can be accurate, stably centre gripping dysmorphism work piece, does not influence the processing of work piece surface.

To achieve the purpose, the utility model adopts the following technical proposal:

a clamp, comprising: a frame; the inner support assembly is rotatably connected to the rack and comprises a first driving piece, an expansion sleeve and a conical rod, the output end of the first driving piece is connected with the conical rod, the expansion sleeve is inserted into an inner hole of a workpiece, the conical rod can be inserted into the expansion sleeve, and the expansion sleeve is configured to be capable of tensioning in the inner hole of the workpiece when the first driving piece drives the conical rod to move towards the interior of the expansion sleeve; the rotary driving assembly is respectively connected with the rack and the inner support assembly and is configured to drive the inner support assembly to rotate relative to the rack.

As a preferable scheme of the clamp, a plurality of grooves are formed on the outer surface of one end of the expansion sleeve, which is far away from the first driving piece.

As a preferable scheme of the fixture, a groove bottom of the groove is arc-shaped.

As a preferred scheme of a fixture, the inner support assembly further comprises a protective shell, the first driving member is arranged inside the protective shell, and the protective shell is rotatably connected to the rack.

As a preferred scheme of the clamp, the rotary driving assembly includes a second driving member and a connecting plate, one end of the connecting plate is rotatably connected to the protective shell, and the other end of the connecting plate is rotatably connected to an output end of the second driving member.

As a preferable scheme of the clamp, a limiting assembly is further disposed on the machine frame, and the limiting assembly is configured to limit the rotation of the inner support assembly.

As a preferable aspect of the jig, the stopper assembly includes: the third driving piece is arranged on the rack; the movable clamping block is connected with the output end of the third driving piece; the fixed clamping block is connected with the inner support component, and the movable clamping block can selectively abut against the surface of the fixed clamping block.

As a preferable scheme of the clamp, a plurality of slots are circumferentially arranged on the fixed clamping block at intervals, and the movable clamping block is configured to be capable of being selectively clamped in any one of the slots.

As an optimal scheme of the clamp, the clamping groove is a V-shaped groove, and a V-shaped bulge is arranged on the movable clamping block.

As a preferred scheme of the clamp, a slide rail is arranged on the rack, and the movable clamping block is in sliding fit with the slide rail.

The utility model has the advantages that:

the clamp provided by the utility model can clamp a workpiece needing to process the outer surface, the expansion sleeve is placed in the inner hole of the workpiece, the first driving piece drives the conical rod to move in the expansion sleeve, so that the expansion sleeve is tightly tensioned in the inner hole of the workpiece, and the workpiece is rapidly clamped, the clamping force is accurate, and the clamp can ensure that the workpiece can not fall off due to the over-small clamping force and the surface of the workpiece can not be damaged due to the over-large clamping force; through setting up the rotation of the internal stay subassembly of the drive of the rotation driving subassembly, the workpiece can be processed in multiple directions, the processing efficiency is improved, and the product quality is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a clamp provided by the present invention;

fig. 2 is a partially enlarged schematic view at a in fig. 1.

In the figure:

100-a workpiece;

1-a frame;

2-internal support component, 21-first driving component, 22-expansion sleeve, 221-groove, 23-protective shell;

31-second driving member, 32-connecting plate, 33-rotating shaft;

4-limit component, 41-fixed clamping block, 42-movable clamping block and 43-third driving piece.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1-2, the present embodiment provides a jig for holding a workpiece 100 whose outer surface is to be machined, the jig including a frame 1 and an inner support assembly 2 rotatably connected to the frame 1. The internal stay assembly 2 comprises a first driving member 21, an expansion sleeve 22 and a tapered rod, wherein the output end of the first driving member 21 is connected with the tapered rod, the expansion sleeve 22 is inserted into the inner hole of the workpiece 100, the tapered rod can be inserted into the expansion sleeve 22, and the expansion sleeve 22 is configured to be capable of tensioning in the inner hole of the workpiece 100 when the first driving member 21 drives the tapered rod to move towards the inside of the expansion sleeve 22. The clamping force of the clamp is accurate, and the clamp can ensure that the workpiece 100 cannot fall off due to the fact that the clamping force is too small, and the surface of the workpiece 100 cannot be damaged due to the fact that the clamping force is too large.

Further, a plurality of grooves 221 are formed on the outer surface of the end of the expansion sleeve 22 away from the first driving member 21. The plurality of grooves 221 divide the opening of the expansion sleeve 22 into a plurality of elastic arms, and when the tapered rod moves towards the inside of the expansion sleeve 22, the elastic arms receive the outward opening acting force of the tapered rod, so that the expansion sleeve 22 can be ensured to have enough deformation, and the expansion sleeve 22 can be tensioned in the inner hole of the workpiece 100.

Preferably, the groove bottom of the groove 221 is arc-shaped, and the groove bottom of the groove 221 on the expansion sleeve 22 is arc-shaped, so that the stress concentration of the groove bottom of the groove 221 can be prevented from being damaged.

Further, the inner support assembly 2 further comprises a protective shell 23, the first driving member 21 is disposed inside the protective shell 23, and the protective shell 23 is rotatably connected to the machine frame 1. Because the workpiece 100 can generate a large amount of smoke and splashes in the grinding process, the first driving piece 21 is arranged inside the protective shell 23, so that the first driving piece 21 can be prevented from being worn, and the service life of the first driving piece 21 is prolonged. Preferably, the first driving member 21 is a first cylinder, and an output end of the first cylinder is connected to the tapered rod.

Further, the clamp further comprises a rotary driving assembly configured to drive the inner support assembly 2 to rotate on the frame 1. The inner support component 2 is driven to rotate by the rotary driving component, so that the position of the workpiece 100 in the space can be adjusted, the operator can conveniently process the workpiece in multiple directions, the processing efficiency is improved, and the product quality is ensured.

Specifically, in the present embodiment, the rotation driving assembly includes a second driving member 31 and a connecting plate 32, one end of the connecting plate 32 is rotatably connected to the protective shell 23, and the other end of the connecting plate 32 is rotatably connected to the output end of the second driving member 31. Preferably, the second driving member 31 is a second cylinder, and an output end of the second cylinder is fixedly connected to the connecting plate 32. When the output of second cylinder stretches out, can drive connecting plate 32 and take place to rotate, and then connecting plate 32 drives interior subassembly 2 that props and takes place to rotate. Specifically, the protective housing 23 is connected to the frame 1 through a rotating shaft 33, the rotating shaft 33 is fixedly connected to the protective housing 23, and the rotating shaft 33 can rotate relative to the frame 1.

Further, in order to avoid the workpiece 100 from shaking in the grinding process to affect the grinding effect, the rack 1 is further provided with a limiting component 4, and the limiting component 4 is configured to limit the rotation of the inner support component 2.

Specifically, the limiting assembly 4 comprises a third driving piece 43, a movable clamping block 42 and a fixed clamping block 41, wherein the third driving piece 43 is arranged on the rack 1, the movable clamping block 42 is slidably connected to the rack 1, the movable clamping block 42 is connected to the output end of the third driving piece 43, the fixed clamping block 41 is connected to the inner support assembly 2, and the movable clamping block 42 can selectively abut against the surface of the fixed clamping block 41. Specifically, the one end of pivot 33 stretches out frame 1 and is connected with fixed joint piece 41, when interior supporting component 2 is rotatory for frame 1, can drive fixed joint piece 41 synchronous revolution.

Further, a plurality of slots are provided on the fixed clamping block 41, and the movable clamping block 42 is configured to be capable of being selectively clamped in any one of the slots. Preferably, in this embodiment, the clamping groove is a V-shaped groove, and the movable clamping block 42 is provided with a V-shaped protrusion; a plurality of draw-in grooves are evenly spaced distribution in the circumference of fixed joint piece 41, and the angle of the position that back internal stay subassembly 2 kept in the space after the joint has been decided to the number of draw-in grooves. Two clamping grooves are arranged in fig. 1, the included angle between the two clamping grooves is 90 degrees, the movable clamping block 42 in fig. 1 is inserted into one clamping groove, and the inner support component 2 is in a downward vertical posture at the moment; when the movable clamping block 42 is inserted into another clamping groove, the inner support component 2 can be expected to be in a horizontal posture. Of course, in other embodiments, other arrangements may be adopted as long as the rotation limit of the inner support assembly 2 can be achieved.

Further, in this embodiment, a slide rail is disposed on the frame 1, and the movable clamping block 42 is slidably engaged with the slide rail. Of course, in other embodiments, other arrangements for sliding the movable clamping block 42 on the rack 1 may be adopted.

The specific use process of the clamp is as follows: firstly, inserting the expansion sleeve 22 into an inner hole of the workpiece 100, and driving the tapered rod to move towards one side close to the workpiece 100 by the first driving member 21 so as to expand an opening of the expansion sleeve 22 and tightly tension the expansion sleeve in the inner hole of the workpiece 100, thereby realizing rapid clamping of the workpiece 100; then the second driving piece 31 drives the connecting plate 32 to rotate, and the connecting plate 32 drives the inner support assembly 2 to rotate to a proper angle and position; finally, the third driving member 43 drives the movable clamping block 42 to move towards the direction close to the fixed clamping block 41, so that the movable clamping block 42 is clamped in the corresponding clamping groove on the fixed clamping block 41, and the workpiece 100 can be polished. In the polishing process, an operator can adjust the direction of the inner support component 2 relative to the rack 1 at any time to complete the all-dimensional polishing of the workpiece 100. The utility model provides a anchor clamps convenient operation and centre gripping are quick, can guarantee the quality of polishing of product.

In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A clamp, comprising:

a frame (1);

the inner support assembly (2) is rotatably connected to the rack (1), the inner support assembly (2) comprises a first driving part (21), an expansion sleeve (22) and a conical rod, the output end of the first driving part (21) is connected with the conical rod, the expansion sleeve (22) is inserted into an inner hole of a workpiece (100), the conical rod can be inserted into the expansion sleeve (22), and the expansion sleeve (22) is configured to be capable of being tensioned in the inner hole of the workpiece (100) when the first driving part (21) drives the conical rod to move towards the interior of the expansion sleeve (22);

the rotary driving assembly is respectively connected with the rack (1) and the inner support assembly (2), and the rotary driving assembly is configured to drive the inner support assembly (2) to rotate relative to the rack (1).

2. A clamp as claimed in claim 1, characterized in that a plurality of grooves (221) are provided in the outer surface of the expansion shell (22) at the end remote from the first drive member (21).

3. A clamp as claimed in claim 2, characterized in that the groove bottom of the groove (221) is circular-arc shaped.

4. The clamp according to claim 1, characterized in that said internal bracing assembly (2) further comprises a protective casing (23), said first driving member (21) being arranged inside said protective casing (23), said protective casing (23) being rotatably connected to said machine frame (1).

5. The clamp according to claim 4, characterized in that said rotary drive assembly comprises a second drive member (31) and a connecting plate (32), one end of said connecting plate (32) being rotatably connected to said protective casing (23) and the other end of said connecting plate (32) being rotatably connected to the output of said second drive member (31).

6. The clamp according to any one of claims 1 to 5, wherein a limiting assembly (4) is further arranged on the machine frame (1), and the limiting assembly (4) is configured to limit the rotation of the inner support assembly (2).

7. The clamp according to claim 6, characterized in that said stop assembly (4) comprises:

a third drive element (43), the third drive element (43) being arranged on the machine frame (1);

the movable clamping block (42), the movable clamping block (42) is connected with the output end of the third driving piece (43);

fixed joint piece (41), fixed joint piece (41) with interior subassembly (2) of propping is connected, activity joint piece (42) can the selective butt in the surface of fixed joint piece (41).

8. The clamp according to claim 7, wherein a plurality of slots are circumferentially arranged on the fixed clamping block (41) at intervals, and the movable clamping block (42) is configured to be selectively clamped in any one of the slots.

9. The clamp according to claim 8, wherein the clamping groove is a V-shaped groove, and a V-shaped protrusion is arranged on the movable clamping block (42).

10. The clamp according to claim 8, characterized in that a slide rail is arranged on the frame (1), and the movable clamping block (42) is in sliding fit with the slide rail.