CN209936387U

CN209936387U - Clamp apparatus

Info

Publication number: CN209936387U
Application number: CN201920460275.1U
Authority: CN
Inventors: 向亮; 宋鹏涛; 白升华; 蔡波
Original assignee: ZHUHAI ROSSINI WATCH CO Ltd
Current assignee: ZHUHAI ROSSINI WATCH CO Ltd
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2020-01-14
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to an anchor clamps, including base subassembly, fixed mounting in sleeve on the base subassembly with prop and push away the subassembly. The sleeve includes lateral wall and roof, is provided with the mounting structure who is used for installing the part by processing on the roof surface, is provided with the grafting portion on the internal surface of lateral wall. At least two through grooves are formed in the outer circumferential surface of the sleeve at intervals in the circumferential direction, one end of each through groove extends to the outer surface of the top wall, and the top wall can be unfolded or folded integrally due to the arrangement of the at least two through grooves. The propping and pushing assembly comprises a propping piece and a push rod, the propping piece is arranged in the sleeve and can prop the propping part, one end of the push rod is connected with the propping piece, and the other end of the push rod penetrates through the base assembly to be connected with the driving device. The top wall is wholly strutted when the driving device drives the strutting piece to strut the strutting portion so that the mounting structure is externally expanded and tightly expanded to be processed parts, and the top wall is wholly furled when the driving device drives the strutting piece to be disconnected with the strutting portion so that the mounting structure is loosened to be processed parts.

Description

Clamp apparatus

Technical Field

The utility model relates to a machine-building technical field especially relates to an anchor clamps.

Background

The jig is a device for fixing a processing object in a machine manufacturing process so that the processing object has a correct position, and thus the fixed processing object is subjected to construction or inspection. In the process of tooling the fixture, the performance of the fixture is directly related to the processing precision of the product. The machining precision requirement of some parts which are easy to deform is higher, the machining efficiency is low, the machining difficulty is high, and the cost is higher. The existing clamp for machining the easily-deformed parts has the problems of low machining efficiency and high machining cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an there is the problem that machining efficiency is low, the processing cost is high to current anchor clamps, provides one kind can effectively improve machining efficiency and reduce the anchor clamps of processing cost.

A clamp comprising a base assembly, a sleeve fixedly mounted on the base assembly, and a push-brace assembly:

the sleeve comprises a side wall and a top wall, wherein an installation structure for installing a machined part is arranged on the outer surface of the top wall, and a supporting part is arranged on the inner surface of the side wall;

at least two through grooves are formed in the outer circumferential surface of the sleeve at intervals along the circumferential direction, one end of each through groove extends to the outer surface of the top wall, each through groove penetrates through the inner surface and the outer surface of the side wall and the inner surface and the outer surface of the top wall, and the top wall can be unfolded or folded integrally due to the arrangement of the at least two through grooves;

the supporting and pushing assembly comprises a supporting piece and a push rod, the supporting piece is arranged in the sleeve and can support the supporting part, one end of the push rod is connected with the supporting piece, and the other end of the push rod penetrates through the base assembly and is connected with the driving device;

the driving device drives the opening piece to do reciprocating linear motion in the sleeve so that the opening piece is opened or separated from the supporting part, when the opening piece opens the supporting part, the top wall is wholly opened so that the mounting structure is externally expanded and tightly expanded to the processed part, and when the opening piece is separated from the supporting part, the top wall is wholly folded so that the mounting structure loosens the processed part.

In one embodiment, the mounting structure is a boss on the outer surface of the top wall, each through groove penetrates through the upper surface and the lower surface of the boss, and the at least two through grooves divide the boss into at least two expansion blocks capable of expanding outwards or contracting inwards;

the supporting part is an annular inclined surface which is arranged on the inner surface of the side wall and is close to the top wall, and the inner diameter of the side wall is gradually increased on the annular inclined surface along the direction far away from the top wall;

the opening part is an opening disc, the outer diameter of the opening disc is larger than the inner diameter of the side wall where the annular inclined plane is located

The push rod pushes the expanding disc to be close to the top wall, the outer circumferential surface of the expanding disc applies radial acting force to the annular inclined surface to enable the top wall to be integrally expanded outwards, and the at least two expansion blocks expand outwards to tightly expand the machined part;

the push rod pulls the opening disc to be far away from the top wall, the opening disc is separated from the annular inclined surface, so that the top wall integrally shrinks inwards, and the at least two expansion blocks shrink inwards to loosen the machined part.

In one embodiment, the included angle between the annular inclined surface and the vertical direction is 5-20 degrees.

In one embodiment, the periphery of the end face of the expanding disc close to the top wall is provided with a chamfer inclined surface, and the included angle between the chamfer inclined surface and the vertical direction is 5-20 degrees.

In one embodiment, the number of the through grooves is 6, the 6 through grooves are uniformly distributed on the outer circumferential surface of the sleeve, and the 6 through grooves divide the boss into 6 expansion blocks which can expand outwards or contract inwards.

In one embodiment, the end surface center of the expanding disc close to the top wall is inwards sunken to form a groove.

In one embodiment, an end of each through slot remote from the top wall is formed with a reinforcement hole communicating with the through slot.

In one embodiment, the expanding and pushing assembly further comprises a spring arranged between the expanding disc and the push rod, one end of the spring is connected with the expanding disc, and the other end of the spring is connected with the push rod.

In one embodiment, the supporting and pushing assembly further comprises a universal ball, the universal ball is located in the spring, a first accommodating cavity is formed in one end, away from the top wall, of the supporting disc, and the inner surface of the first accommodating cavity is a spherical surface matched with the universal ball;

the push rod is close to the one end of propping open the dish is provided with the second and holds the chamber, the second hold the internal surface in chamber be with universal ball matched with sphere, universal ball set up in first hold the chamber with the second holds the intracavity.

In one embodiment, the base assembly comprises a base and a height adjusting disc, the sleeve is fixedly mounted on the height adjusting disc, and the height adjusting disc is connected with the base and can rotate relative to the base to adjust the height of the sleeve in the vertical direction.

In one embodiment, the height adjusting plate comprises a disc, the sleeve is fixedly arranged on the disc, and the center line of the sleeve is coaxial with the center line of the disc;

the base is close to the terminal surface of disc has with the mounting groove of disc looks adaptation, the disc rotationally install in the mounting groove.

In one embodiment, the mounting groove comprises a groove bottom, the center of the groove bottom is provided with a mounting hole extending along the axial direction, and the hole wall of the mounting hole is provided with an internal thread;

the height adjusting plate further comprises a first cylindrical body, the first cylindrical body is arranged on the end face of the base, the disc is close to the end face of the base, the center line of the first cylindrical body is coaxially arranged with the center line of the disc, an external thread matched with the internal thread is arranged on the outer circumferential surface of the first cylindrical body, and the first cylindrical body is in threaded connection with the mounting hole.

In one embodiment, the base assembly further comprises a locking member, the mounting groove further comprises a groove wall, a stopping hole penetrating in the radial direction is formed in the outer circumference of the groove wall, and the locking member penetrates through the stopping hole and then abuts against the outer circumference of the disc.

In one embodiment, the height adjusting disc further comprises a second cylindrical body, the second cylindrical body is connected with the first cylindrical body, the second cylindrical body and the first cylindrical body are coaxially arranged, the inner diameters of the second cylindrical body and the first cylindrical body are the same, and a step surface is arranged at the joint of the second cylindrical body and the first cylindrical body;

the bottom of the mounting hole is provided with a limiting hole, the limiting hole is communicated with the mounting hole, the limiting hole and the mounting hole are coaxially arranged to form a stepped hole, and the second cylindrical body is mounted in the limiting hole.

In one embodiment, the end face of the disc close to the sleeve is provided with a receiving groove which is formed by inward concave;

the side wall is close to the outwards protruding formation annular fixed part of bobbin mouth department, the last fixed orifices of having seted up of annular fixed part, the sleeve passes through the fixed orifices is fixed on the disc, telescopic opening hold in the holding tank.

The technical scheme in the embodiment at least has the following technical effects:

the clamp comprises a base assembly, a sleeve fixedly installed on the base assembly and a supporting and pushing assembly. The sleeve comprises a side wall and a top wall, wherein an installation structure used for installing a machined part is arranged on the outer surface of the top wall, and a supporting part is arranged on the inner surface of the side wall. At least two through grooves are formed in the outer circumferential surface of the sleeve at intervals in the circumferential direction, one end of each through groove extends to the outer surface of the top wall, each through groove penetrates through the inner surface and the outer surface of the side wall and the inner surface and the outer surface of the top wall, and the top wall can be unfolded or folded integrally due to the arrangement of the at least two through grooves. The propping and pushing assembly comprises a propping piece and a push rod, the propping piece is arranged in the sleeve and can prop the propping part, one end of the push rod is connected with the propping piece, and the other end of the push rod penetrates through the base assembly and the driving device. The driving device drives the opening piece to do reciprocating linear motion in the sleeve, so that the opening piece is opened or separated from the supporting part, when the opening piece opens the supporting part, the top wall is integrally opened, so that the mounting structure is externally expanded and tightly expanded to the processed part, and when the opening piece is separated from the supporting part, the top wall is integrally folded, so that the mounting structure loosens the processed part. Through the expansion mode, the easily-deformable part can be expanded conveniently and quickly, and can be machined, milled and the like, so that the machining efficiency is improved, and the machining cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

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

Fig. 1 is an assembly view of a clamp according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is an exploded view of a clamp according to an embodiment of the present invention.

Description of reference numerals:

100-base assembly

110-base

111-mounting groove

112-mounting hole

113-limiting hole

120-height adjusting disk

121-disc

122-first cylindrical body

123-second cylinder

124-accommodating groove

130-locking member

200-sleeve

210-side wall

220-ceiling wall

230-mounting structure

231-expansion block

240-through groove

241-reinforced hole

250-bracing portion

260-annular anchoring part

300-support and push assembly

310-distractor

311-chamfer inclined plane

320-push rod

330-spring

340-Universal ball

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. The following description of the embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

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. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

In the description of the present invention, it is to be understood that the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The technical solution of the present invention will be explained in more detail with reference to fig. 1 to 4.

Referring to fig. 1 to 4, an embodiment of the present invention provides a clamp, which includes a base assembly 100, a sleeve 200 fixedly mounted on the base assembly 100, and a supporting and pushing assembly 300. The sleeve 200 includes a side wall 210 and a top wall 220 disposed atop the side wall 210. The outer surface of the top wall 220 is provided with a mounting structure 230 for mounting a part to be machined, and the specific shape of the mounting structure 230 is designed and determined according to the specific shape of the part to be machined. The sidewall 210 is provided with a stay 250 on an inner surface thereof.

At least two through grooves 240 are formed in the outer circumferential surface of the sleeve 200 at intervals in the circumferential direction, one end of each through groove 240 extends to the outer surface of the top wall 220, each through groove 240 penetrates through the inner and outer surfaces of the side wall 210 and the inner and outer surfaces of the top wall 220, the top wall 220 of the sleeve 200 is divided into at least two parts by the at least two through grooves 240, the side wall 210 is also divided into at least two parts, and the top wall 220 can be unfolded or folded integrally by the at least two through grooves 240. The spreader assembly 300 includes a spreader 310 and a pushrod 320. The spreader 310 is disposed in the sleeve 200 and can spread the spreader 250. One end of the push rod 320 is connected to the spreader 310 and the other end passes through the base assembly 100 and is connected to a driving device. Alternatively, the driving device may be a pneumatic device, and the pneumatic device is connected to the push rod 320 to control the up and down movement of the push rod 320. The driving device drives the expanding piece 310 to do reciprocating linear motion in the sleeve 200, so that the expanding piece 310 expands or disengages from the expanding portion 250, the top wall 220 is integrally expanded when the expanding piece 310 expands the expanding portion 250, so that the mounting structure 230 is expanded to tighten the machined part, and the top wall 220 is integrally contracted when the expanding piece 310 disengages from the expanding portion 250, so that the mounting structure 230 releases the machined part. Through the expansion mode, the easily-deformable part can be expanded conveniently and quickly, and can be machined, milled and the like, so that the machining efficiency is improved, and the machining cost is reduced.

Referring to fig. 1 to 3, in one embodiment, the mounting structure 230 is a boss formed on an outer surface of the top wall 220. The specific shape of the boss is matched with the specific shape of the machined part. Each through groove 240 penetrates through the upper and lower surfaces of the boss, and the at least two through grooves 240 divide the boss into at least two expansion blocks 231 which can expand outwards or contract inwards. The boss can be a circular boss, an oval boss, a polygonal boss and the like, and in the embodiment, the boss is a circular boss. The support portion 250 is an annular inclined surface formed by inward protrusion of the inner surface of the side wall 210 near the top wall 220, and the inner diameter of the side wall 210 is gradually increased on the annular inclined surface in a direction away from the top wall 220. From the opening of the sleeve 200 toward the top wall 220, the inner diameter of the side wall 210 before the annular inclined surface is constant and equal to or slightly larger than the outer diameter of the spreader 310. The spreader 310 is a spreader disk, and the outer diameter of the spreader disk is larger than the inner diameter of the sidewall 210 where the annular inclined surface is located. The push rod 320 pushes the expanding disc to be close to the top wall 220, the outer circumferential surface of the expanding disc applies a radial acting force to the annular inclined surface, so that the top wall 220 is integrally expanded outwards, and the at least two expanding blocks 231 expand outwards to expand the machined part. The closer the expanding disc is to the top wall 220, the larger the outward expanding amplitude of the top wall 220 as a whole is, the larger the outward expanding amplitude of the at least two expanding blocks 231 is, and the tighter the part to be machined is expanded by the at least two expanding blocks 231. After expansion, the easily deformable part can be conveniently and rapidly expanded and processed by driving, milling and the like. The push rod 320 pulls the expanding disc away from the top wall 220, the expanding disc is separated from the annular inclined surface, so that the top wall 220 is integrally contracted inwards, and the at least two expansion blocks 231 are contracted inwards to release the processed part.

Optionally, referring to fig. 3, the supporting portion 250 is an annular inclined surface formed by inward protrusion of the inner surface of the side wall 210 near the top wall 220, and an included angle between the annular inclined surface and the vertical direction is between 5 degrees and 20 degrees. The annular inclined plane is bigger with the contained angle of vertical direction, prop open the dish distance when the roof 220 is nearer, the amplitude that the roof 220 upwards propped open on the whole is bigger, two at least bloated tight piece 231 bloated amplitude is bigger outward, by the processing part quilt it is tight more that two at least bloated tight piece 231 are bloated.

Optionally, referring to fig. 3 and 4, a chamfer inclined surface 311 is disposed on a periphery of an end surface of the expanding disc close to the top wall 220, and an included angle between the chamfer inclined surface 311 and the vertical direction is 5 degrees to 20 degrees. The projection length of the chamfer inclined surface 311 in the vertical direction is smaller than the projection length of the annular inclined surface in the vertical direction. The chamfer inclined surface 311 is provided to facilitate the spreading disc smoothly spreading the annular inclined surface.

Optionally, referring to fig. 3, an included angle between the annular inclined surface and the vertical direction is 8 degrees, and an included angle between the chamfer inclined surface 311 and the vertical direction is also 8 degrees. The inclination of the annular inclined surface is matched with that of the chamfer inclined surface 311, so that the annular inclined surface can be smoothly unfolded by the unfolding disc.

Optionally, referring to fig. 1 to 3, the number of the through slots 240 is 6. The 6 through grooves 240 are strip-shaped through grooves and are uniformly distributed on the outer circumferential surface of the sleeve 200. Of course, the through groove 240 may be other through grooves such as a wave-shaped through groove. The 6 through slots 240 divide the boss into 6 expansion blocks 231 which can expand outwards or contract inwards. When the push rod 320 pushes the expanding disc to move towards the top wall 220 in the sleeve 200 along the expanding part 250, the outer circumferential side wall 210 of the expanding disc applies a radial acting force to enable the top wall 220 to expand integrally, so that the 6 expanding blocks 231 expand and expand the machined part outwards, the outer circumferential surfaces of the 6 expanding blocks 231 provide clamping force with uniform size for the machined part, and the machined part is not prone to ovality and deformation in the machining process. When the expanding disc is disengaged from the expanding portion 250, the top wall 220 is entirely folded so that the 6 expanding blocks 231 are retracted inwards to release the machined part.

Optionally, the center of the end surface of the expanding disc close to the top wall 220 is recessed inwards to form a groove. The weight of the opening plate can be reduced, and materials can be saved.

Optionally, as shown in fig. 1, 2 and 4, one end of each through groove 240 away from the top wall is formed with a reinforcement hole 241 communicating with the through groove 240. The reinforcement holes 241 may effectively reduce stress concentration at one end of the through slots 240 when the sidewalls 210 are retracted, increasing the strength and life of the sleeve 200.

In one embodiment, referring to fig. 3 and 4, the expanding and pushing assembly 300 further includes a spring 330 disposed between the expanding disk and the pushing rod 320. One end of the spring 330 is connected with the expanding disc and the other end is connected with the push rod 320. When the push rod 320 pushes the expanding disc to move upwards to expand the expanding portion 250, the pushing direction of the expanding disc can be adjusted by using the telescopic shaking of the spring 330, the expanding disc smoothly expands the expanding portion 250 to enable the sleeve 200 to be uniformly deformed, and the expanding block 231 expands outwards to provide more uniform expanding and clamping force for the processed part. The processed part is not easy to generate ovality and deformation in the processing process. After the sample is processed, the push rod 320 moves downwards, the spring 330 moves downwards, meanwhile, the spring 330 pulls the expanding disc to move downwards, and when the expanding disc is separated from the expanding part 250, the whole top wall is gathered, so that the 6 expanding blocks 231 contract inwards to loosen the processed part.

Further, referring to fig. 3 and 4, the sleeve pushing assembly 300 further includes a universal ball 340. The spring 330 is a coil spring, and the universal ball 340 is located in the spring 330 to ensure that the universal ball 340 cannot fall off. One end of the opening disc, which is far away from the top wall 220, is provided with a boss protruding downwards, the boss is provided with a first accommodating cavity, and the inner surface of the first accommodating cavity is a spherical surface matched with the universal ball 340. The push rod 320 is close to the one end of propping open the dish is provided with the second and holds the chamber, the second hold the intracavity the internal surface be with universal ball 340 matched with sphere, universal ball 340 set up in first hold the chamber with the second holds the intracavity. The universal ball 340 is used for ensuring that when the push rod 320 moves upwards, the universal ball 340 pushes the force to the spreading disc, and when the spreading disc inclines, the spreading disc can slide on the universal ball 340 at will and returns to a proper position quickly, so that the spreading disc can spread the spreading part 250 smoothly. The universal ball 340 can adjust the propelling direction of the expanding disc, so that the sleeve 200 can be uniformly deformed, and the expansion block 231 expands outwards to provide more uniform expansion and clamping force for the processed part, so that the processed part is not easy to generate ovality and deformation in the processing process. After the sample is processed, the push rod 320 moves downwards, the spring 330 moves downwards, meanwhile, the spring 330 pulls the expanding disc to move downwards, and when the expanding disc is separated from the expanding part 250, the whole top wall is gathered, so that the 6 expanding blocks 231 contract inwards to loosen the processed part.

In one embodiment, referring to fig. 3 and 4, the base assembly 100 includes a base 110 and a height adjustment plate 120. The sleeve 200 is fixedly mounted on the height adjustment plate 120, and the height adjustment plate 120 is connected to the base 110 and can rotate relative to the base 110 to adjust the height of the sleeve 200 in the vertical direction. Since it is determined that the stroke of the push rod 320 is controlled by the pneumatic means, the degree of swelling of the swelling block 231 is adjusted by rotating the height adjustment disk 120 to adjust the height of the sleeve 200 in the vertical direction.

Alternatively, referring to fig. 3 and 4, the height adjustment plate 120 includes a circular plate 121. The sleeve 200 is fixedly mounted on the disc 121, and a center line of the sleeve 200 is coaxial with a center line of the disc 121. The end surface of the base 110 close to the disc 121 is provided with a mounting groove 111 matched with the disc 121, and the disc 121 is rotatably mounted in the mounting groove 111. The disc 121 may be rotated with respect to the mounting groove 111 to adjust the height of the sleeve 200 in the vertical direction to adjust the degree of expansion of the expansion block 231.

Further, referring to fig. 3 and 4, the mounting groove 111 includes a groove bottom, the center of the groove bottom is provided with an axially extending mounting hole 112, and the wall of the mounting hole 112 is provided with an internal thread. The height-adjusting plate 120 further includes a first cylindrical body 122, and the first cylindrical body 122 is integrally formed with the circular plate 121. The first cylindrical body 122 is disposed on the end surface of the disc 121 close to the base 110, the center line of the first cylindrical body 122 is coaxial with the center line of the disc 121, an external thread matched with the internal thread is disposed on the outer circumferential surface of the first cylindrical body 122, and the first cylindrical body 122 is in threaded connection with the mounting hole 112. The first cylindrical body 122 is rotated with respect to the mounting hole 112 to adjust the height of the sleeve 200 in the vertical direction to adjust the degree of expansion of the expansion block 231.

Referring further to fig. 3 and 4, the base assembly 100 further includes a locking member 130. The mounting groove 111 further includes a groove wall, a stop hole penetrating in a radial direction is formed in an outer circumference of the groove wall, and the locking member 130 penetrates through the stop hole and abuts against an outer circumference of the disc 121. Optionally, the locking member 130 is a locking bolt, the stopping hole is a threaded hole, and the tail of the locking bolt is screwed into the threaded hole to abut against the outer circumferential surface of the disc 121. The first cylindrical body 122 is in threaded connection with the mounting hole 112 to realize the up-and-down movement of the disc 121, moves to a proper position, is locked by 4 height locking bolts, and fixes the disc 121.

Optionally, referring to fig. 3 and 4, the height adjustment plate 120 further includes a second cylindrical body 123. The second cylindrical body 123 is connected to the first cylindrical body 122, the second cylindrical body 123 is coaxially arranged with the first cylindrical body 122 and has the same inner diameter, and a step surface is formed at the connection position of the second cylindrical body 123 and the first cylindrical body 122. The bottom of the mounting hole 112 is provided with a limiting hole 113, the limiting hole 113 is communicated with the mounting hole 112, the limiting hole 113 and the mounting hole 112 are coaxially arranged to form a stepped hole, and the second cylindrical body 123 is mounted in the limiting hole 113. The limiting hole 113 is engaged with the second cylindrical body 123, so as to prevent the first cylindrical body 122 from tilting when being screwed into the mounting hole 112. The push rod 320 passes through the disc 121, the first cylindrical body 122 and the second cylindrical body 123 from top to bottom and then is connected with a pneumatic device.

Optionally, the end surface of the disc 121 adjacent to the sleeve 200 has an inwardly recessed receiving groove 124. The sidewall 210 is protruded outward near the opening of the cylinder to form an annular fixing portion 260, a fixing hole is opened on the annular fixing portion 260, the sleeve 200 is fixed on the disc 121 through the fixing hole, and the opening of the sleeve 200 is received in the receiving groove 124. Alternatively, the ring-shaped fixing portion 260 is fixed to the disc 121 by three fastening bolts.

During specific use, according to the stroke of the push rod 320, the expansion degree of the expansion blocks 231 is adjusted by screwing the first cylindrical body 122 into the depth adjusting sleeve 200 in the mounting hole 112 in the vertical direction, the push rod 320 is controlled to move upwards by the pneumatic device, the outer circumferential surface of the expansion part applies a radial acting force to the support part 250 to gradually expand the support part 250, when the support part 250 is expanded, the whole top wall expands outwards to enable the outer circumferential surfaces of the at least two expansion blocks 231 to expand the processed part, the at least two expansion blocks 231 provide the expansion force with uniform size for the processed part, and the processed part is not easy to generate ovality and deformation in the processing process. After the sample is processed, the push rod 320 moves downwards, the spring 330 moves downwards, and meanwhile, the spring 330 pulls the expanding part to be disengaged from the expanding part 250, and the top wall 220 retracts integrally, so that the at least two expansion blocks 231 retract to release the processed part.

The utility model discloses an above-mentioned anchor clamps have following beneficial effect:

(1) the clamp has simple structure and high reliability;

(2) the tightness of the expansion of the clamp can be controlled through the height adjusting disc;

(3) the sleeve can be processed and manufactured according to different samples, and only the sleeve needs to be replaced when the mold is replaced;

(4) the processing sample is easier to center, and ovality and deformation are not easy to generate in the processing process.

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. The utility model provides a clamp, its characterized in that includes base subassembly, fixed mounting in sleeve on the base subassembly with prop and push away the subassembly:

2. The clamp of claim 1, wherein the mounting structure is a boss on the outer surface of the top wall, each through groove penetrates through the upper and lower surfaces of the boss, and the at least two through grooves divide the boss into at least two expansion blocks capable of expanding outwards or contracting inwards;

the opening part is an opening disc, and the outer diameter of the opening disc is larger than the inner diameter of the side wall where the annular inclined surface is located;

3. The clamp of claim 2, wherein the annular inclined surface is angled between 5 and 20 degrees from vertical.

4. The clamp of claim 3, wherein the periphery of the end face of the expanding disc close to the top wall is provided with a chamfer inclined surface, and the included angle between the chamfer inclined surface and the vertical direction is 5-20 degrees.

5. The clamp of claim 2, wherein the number of the through grooves is 6, the 6 through grooves are uniformly distributed on the outer circumferential surface of the sleeve, and the 6 through grooves divide the boss into 6 expansion blocks capable of expanding outwards or contracting inwards.

6. The clamp of claim 2, wherein the expansion disc is recessed inwardly to form a groove proximate a center of an end surface of the top wall.

7. The clip defined in claim 1 wherein the end of each channel remote from the top wall is formed with a stiffening aperture communicating with the channel.

8. The clamp of claim 2, wherein the distraction assembly further comprises a spring disposed between the distraction disc and the push rod, one end of the spring being connected to the distraction disc and the other end being connected to the push rod.

9. The clamp of claim 8, wherein the pushing assembly further comprises a universal ball located in the spring, one end of the expanding disc away from the top wall is provided with a first accommodating cavity, and an inner surface of the first accommodating cavity is a spherical surface matched with the universal ball;

10. The clamp of claim 1, wherein the base assembly includes a base and a height adjustment disk, the sleeve being fixedly mounted on the height adjustment disk, the height adjustment disk being connected to the base and rotatable relative to the base to adjust the height of the sleeve in the vertical direction.

11. The clamp of claim 10, wherein said height adjustment disk comprises a circular disk, said sleeve being fixedly mounted on said disk, a centerline of said sleeve being disposed coaxially with a centerline of said disk;

12. The clamp of claim 11, wherein the mounting groove comprises a groove bottom, the center of the groove bottom is provided with an axially extending mounting hole, and the wall of the mounting hole is provided with an internal thread;

13. The clamp of claim 12, wherein the base assembly further comprises a locking member, the mounting groove further comprises a groove wall, a stop hole penetrating in a radial direction is formed in an outer circumference of the groove wall, and the locking member passes through the stop hole and abuts against an outer circumference of the disc.

14. The clamp of claim 12, wherein the height adjusting plate further comprises a second cylindrical body connected with the first cylindrical body, the second cylindrical body is coaxially arranged with the first cylindrical body and has the same inner diameter, and a step surface is arranged at the joint of the second cylindrical body and the first cylindrical body;

15. The clamp of claim 11, wherein the end surface of the disc adjacent to the sleeve has an inwardly recessed receiving groove;