CN209919341U

CN209919341U - CNC anchor clamps convenient to adjust

Info

Publication number: CN209919341U
Application number: CN201920016943.1U
Authority: CN
Inventors: 曾飞龙; 池必清; 何亚宁; 吴正翠; 伍志伟; 伍志林; 黄玄道; 罗治丽; 翟建斌; 范志文; 卢云声; 何龙华
Original assignee: Rapid Mold Technology Co Ltd
Current assignee: Rapid Mold Technology Co Ltd
Priority date: 2019-01-07
Filing date: 2019-01-07
Publication date: 2020-01-10
Anticipated expiration: 2029-01-07

Abstract

The utility model discloses a CNC clamp convenient to adjust, which relates to the field of numerical control lathes and mainly solves the problem that a plurality of chucks cannot move synchronously when the furniture in the prior art is used; the clamp comprises a shell and a plurality of chucks arranged in the shell; a transverse groove is formed in the wall of the inner cavity in the upper part of the shell, a connecting block is slidably clamped in the transverse groove and connected with the chuck, and a slope is formed in the connecting block; an inner annular cavity is formed in the lower portion of the shell, an external thread sleeve is arranged in the inner annular cavity in a sliding clamping mode, a roller is mounted at the top of the external thread sleeve, and the outer wheel face of the roller is abutted to the slope. The utility model discloses a set up connecting block and external thread bush, it cooperatees with the connecting block to install the gyro wheel through the external thread bush for a plurality of connecting blocks can be in step towards the direction removal near the casing center, guarantee the removal synchronism of a plurality of chucks, improve the fixed efficiency of work piece, can avoid the contact surface atress inequality of work piece and each chuck simultaneously.

Description

CNC anchor clamps convenient to adjust

Technical Field

The utility model relates to a numerical control processing field specifically is a CNC anchor clamps convenient to adjust.

Background

A CNC lathe is also called a numerically controlled lathe, and is one of the widely used numerically controlled lathes at present. The cutting tool is mainly used for cutting and processing inner and outer cylindrical surfaces of shaft parts or disc parts, inner and outer conical surfaces with any taper angles, complex rotary inner and outer curved surfaces, cylindrical threads, conical threads and the like, and can perform grooving, drilling, reaming, boring and the like.

The numerical control lathe needs to use a clamp to fix a workpiece when the workpiece is machined, and the patent with the Chinese patent number of CN105215757B discloses a lathe clamp which comprises a clamp main body and a clamp shell, wherein the clamp main body is installed on the clamp shell, the clamp shell is a cylinder, the clamp shell is provided with a fixing part, the fixing part of the clamp shell is installed on a main shaft of the lathe, so that the clamp shell rotates along with the main shaft of the lathe, the rotation of the cylindrical clamp shell is more stable, the workpiece cannot shake when rotating, and the machining is convenient. The clamp main body comprises a plurality of cylindrical chucks, and a workpiece is clamped between the plurality of cylindrical chucks during clamping. During specific operation, the cylindrical chuck comprises a connecting part and a clamping part, the connecting part is used for installing the cylindrical chuck in the clamp shell, and the clamping part is used for clamping a workpiece. When the workpiece is clamped, one end of the workpiece is inserted into a space defined by the plurality of cylindrical chucks, then the bolts are respectively screwed, so that the cylindrical chucks move towards the space defined by the plurality of cylindrical chucks, and finally the workpiece is clamped. The clamp has the advantages of good clamping effect, safe and reliable processing and the like, when the clamp is used, bolts need to be screwed one by one to move a plurality of rectangular chucks, the operation is more cumbersome, the synchronism of the movement of the rectangular chucks can not be ensured, and the uneven stress of the contact surfaces of a workpiece and each chuck is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a CNC anchor clamps convenient to adjust to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a CNC clamp convenient to adjust comprises a shell and a plurality of chucks arranged in the shell; the inner cavity wall of the upper part of the shell is provided with a plurality of transverse grooves which are arranged in one-to-one correspondence with the chucks, connecting blocks are arranged in the transverse grooves in a sliding and clamping manner, the connecting blocks are connected with the transverse grooves through reset springs, one end, close to the center of the shell, of each connecting block is connected with the chucks, and one end, far away from the center of the shell, of each connecting block is provided with a slope; an inner annular cavity communicated with the transverse groove is formed in the lower portion of the shell, an external thread sleeve is slidably clamped in the inner annular cavity, a first limiting block is fixed on the periphery of an upper sleeve body of the external thread sleeve, a limiting groove is formed in the wall of the inner annular cavity, the first limiting block is connected with the limiting groove in a sliding mode, a plurality of connecting frames which are arranged in one-to-one correspondence with the connecting blocks are fixed on the top of the external thread sleeve, rolling wheels are installed at the tail ends of the connecting frames, and the outer wheel face of each rolling wheel is abutted to the slope face; the periphery of the external thread sleeve is sleeved with an internal thread sleeve matched with the external thread sleeve, the internal thread sleeve is arranged in an external annular cavity communicated with the internal annular cavity, and the inner wall of the external annular cavity is provided with an annular sliding groove; the upper end surface and the lower end surface of the internal thread sleeve are fixedly provided with a sliding block matched with the annular sliding groove, and the sliding block is connected with the annular sliding groove in a sliding manner; the periphery of the internal thread sleeve is fixed with annular teeth, a motor is installed on the outer wall of the shell corresponding to the position of the internal thread sleeve, and a gear matched with the annular teeth is fixed at the shaft extension end of the motor.

As a further aspect of the present invention: and one end of the connecting block, which is far away from the center of the shell, is also fixedly provided with a guide rod, and the guide rod penetrates through the shell and is in sliding connection with the shell.

As a further aspect of the present invention: the tail end of the guide rod is connected with a second limiting block.

As a further aspect of the present invention: the inner wall of the inner annular cavity is provided with a plurality of groups of caulking grooves at equal intervals along opposite heights, the caulking grooves are internally embedded with movably arranged balls, and the outer ball surfaces of the balls are in contact with the inner wall of the outer thread sleeve.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model has the advantages that by arranging the connecting blocks and the external thread sleeves, the rollers arranged on the external thread sleeves are matched with the connecting blocks, so that the connecting blocks can synchronously move towards the direction close to the center of the shell, the moving synchronism of the chucks is ensured, the fixing efficiency of the workpiece is improved, and the uneven stress of the contact surface of the workpiece and each chuck can be avoided; through setting up internal thread cover and motor, drive the internal thread cover by the motor through gear engagement and rotate to can conveniently drive the external thread cover, the operation is got up simply swiftly.

Drawings

Fig. 1 is a schematic longitudinal sectional structural view of a CNC fixture for easy adjustment.

FIG. 2 is an external view of a CNC fixture from a top view for ease of adjustment.

In the figure: 1-shell, 11-transverse groove, 12-inner annular cavity, 121-caulking groove, 122-limiting groove, 13-outer annular cavity, 131-annular sliding groove, 2-connecting block, 21-sloping surface, 22-reset spring, 3-chuck, 31-anti-skid protrusion, 4-guide rod, 41-second limiting block, 5-external thread sleeve, 51-first limiting block, 6-internal thread sleeve, 61-sliding block, 62-external gear ring, 7-motor, 71-gear, 8-ball, 9-connecting frame and 91-roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-2, in an embodiment of the present invention, a CNC fixture convenient for adjustment includes a housing 1 and a plurality of chucks 3 disposed in the housing 1; the inner cavity wall of the upper part of the shell 1 is provided with a plurality of transverse grooves 11 which are arranged in one-to-one correspondence with the chucks 3, the transverse grooves 11 are internally provided with connecting blocks 2 in a sliding and clamping manner, the connecting blocks 2 are connected with the transverse grooves 11 through return springs 22, one ends of the connecting blocks 2 close to the center of the shell 1 are connected with the chucks 3, one ends of the connecting blocks 2 far away from the center of the shell 1 are provided with slopes 21, and during work, the chucks 3 are driven to move by driving the connecting blocks 2;

in order to improve the moving stability of the chuck 3, a guide rod 4 is further fixed at one end of the connecting block 2, which is far away from the center of the shell 1, the guide rod 4 penetrates through the shell 1 and is in sliding connection with the shell 1, and further, the tail end of the guide rod 4 is connected with a second limiting block 41 which can play a limiting role;

the lower part of the shell 1 is provided with an inner annular cavity 12 communicated with the transverse groove 11, an external thread sleeve 5 is slidably clamped in the inner annular cavity 12, a first limit block 51 is fixed on the periphery of the upper part sleeve body of the external thread sleeve 5, a limit groove 122 is arranged on the wall of the inner annular cavity 12, the first limit block 51 is slidably connected with the limit groove 122 and is matched with the limit groove 122 by the first limit block 51, the rotation of the external thread sleeve 5 is limited, a plurality of connecting frames 9 which are arranged corresponding to the connecting blocks 2 one by one are fixed at the top of the external thread sleeve 5, the tail end of each connecting frame 9 is provided with a roller 91, the outer wheel surface of each roller 91 is abutted against the slope surface 21, thus, when the external thread sleeve 5 moves upwards, the plurality of rollers 91 are driven to roll on the slope 21 of the corresponding connecting block 2, thereby enabling the plurality of connecting blocks 2 to simultaneously move towards the direction close to the center of the shell 1 and ensuring the movement synchronism of the clamping heads 3;

in order to reduce the moving resistance of the external thread sleeve 5, a plurality of groups of caulking grooves 121 are formed in the inner wall of the inner annular cavity 12 at equal intervals along the opposite height direction, movably arranged balls 8 are embedded in the caulking grooves 121, and the outer ball surfaces of the balls 8 are in contact with the inner wall of the external thread sleeve 5, so that sliding contact can be converted into rolling contact;

the outer periphery of the external thread sleeve 5 is sleeved with an internal thread sleeve 6 matched with the external thread sleeve, the internal thread sleeve 6 is arranged in an external annular cavity 13 communicated with an internal annular cavity 12, and the inner wall of the external annular cavity 13 is provided with an annular sliding groove 131; the upper end surface and the lower end surface of the internal thread sleeve 6 are fixedly provided with sliding blocks 61 matched with the annular sliding grooves 131, the sliding blocks 61 are connected with the annular sliding grooves 131 in a sliding mode, and the sliding blocks 61 are matched with the annular sliding grooves 131, so that the internal thread sleeve 6 is limited in the vertical direction;

the periphery of the internal thread sleeve 6 is fixed with annular teeth 62, a motor 7 is installed on the outer wall of the shell 1 corresponding to the position of the internal thread sleeve 6, a gear 71 matched with the annular teeth 62 is fixed to the shaft extension end of the motor 7, in operation, the motor 7 drives the internal thread sleeve 6 to rotate through gear meshing, and the internal thread sleeve 6 is limited in the vertical direction, so that the external thread sleeve 5 can move upwards under the action of the internal thread sleeve 6, the roller 8 is driven to roll on the slope 21, and the chuck 3 is driven to move to clamp and fix a workpiece.

Example 2

The embodiment provides a CNC lathe, includes the above-mentioned CNC anchor clamps of being convenient for adjust.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A CNC clamp convenient to adjust comprises a shell (1) and a plurality of chucks (3) arranged in the shell (1); the clamping device is characterized in that a plurality of transverse grooves (11) which are arranged in one-to-one correspondence with the chucks (3) are formed in the wall of an inner cavity in the upper portion of the shell (1), connecting blocks (2) are arranged in the transverse grooves (11) in a sliding and clamping mode, the connecting blocks (2) are connected with the transverse grooves (11) through reset springs (22), one ends, close to the center of the shell (1), of the connecting blocks (2) are connected with the chucks (3), and a slope surface (21) is formed in one end, far away from the center of the shell (1), of the connecting blocks; the lower part of the shell (1) is provided with an inner annular cavity (12) communicated with the transverse groove (11), an external thread sleeve (5) is arranged in the inner annular cavity (12) in a sliding clamping mode, a first limiting block (51) is fixed on the periphery of the upper part sleeve body of the external thread sleeve (5), a limiting groove (122) is formed in the cavity wall of the inner annular cavity (12), the first limiting block (51) is connected with the limiting groove (122) in a sliding mode, a plurality of connecting frames (9) which correspond to the connecting blocks (2) one by one are fixed on the top of the external thread sleeve (5), the tail end of each connecting frame (9) is provided with a roller (91), and the outer wheel surface of each roller (91) is abutted to the;

the periphery of the external thread sleeve (5) is sleeved with an internal thread sleeve (6) matched with the external thread sleeve, the internal thread sleeve (6) is arranged in an external annular cavity (13) communicated with the internal annular cavity (12), and the inner wall of the external annular cavity (13) is provided with an annular sliding groove (131); a sliding block (61) matched with the annular sliding groove (131) is fixed on the upper end surface and the lower end surface of the internal thread sleeve (6), and the sliding block (61) is connected with the annular sliding groove (131) in a sliding manner; the periphery of the internal thread sleeve (6) is fixed with annular teeth (62), a motor (7) is mounted on the outer wall of the shell (1) at a position corresponding to the internal thread sleeve (6), and a gear (71) matched with the annular teeth (62) is fixed at the shaft extension end of the motor (7).

2. The CNC clamp facilitating adjustment according to claim 1, wherein a guide rod (4) is further fixed at one end of the connecting block (2) far away from the center of the shell (1), and the guide rod (4) penetrates through the shell (1) and is connected with the shell (1) in a sliding mode.

3. The CNC fixture for facilitating the adjustment according to the claim 2, characterized in that the end of the guiding bar (4) is connected with a second stopper (41).

4. The CNC clamp convenient to adjust according to any one of claims 1 to 3, characterized in that a plurality of sets of embedding grooves (121) are formed in the inner wall of the inner annular cavity (12) at equal intervals along the opposite height direction, movably arranged balls (8) are embedded in the embedding grooves (121), and the outer ball surfaces of the balls (8) are in contact with the inner wall of the external thread sleeve (5).