CN212734998U

CN212734998U - Double-end conical surface chuck anchor clamps

Info

Publication number: CN212734998U
Application number: CN202021188381.8U
Authority: CN
Inventors: 杨红
Original assignee: Chengdu Sichuang Precision Machinery Co ltd
Current assignee: Chengdu Sichuang Precision Machinery Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-19
Anticipated expiration: 2030-06-24

Abstract

The utility model provides a double-head conical surface chuck clamp, which comprises a base, a chuck, a taper sleeve and a pressing sleeve; the chuck is a double-head conical chuck, and first conical surface parts are arranged at two ends of the chuck; the base is provided with an installation groove and an annular cylinder, a second conical surface part is arranged in the installation groove, the lower end of the chuck is placed in the installation groove, and the first conical surface part at the lower end of the chuck is matched with the second conical surface part; the taper sleeve is sleeved on the chuck, a third taper surface part is arranged in the taper sleeve, and the third taper surface part is matched with the first taper surface part at the upper end of the chuck; the lower part of the taper sleeve is inserted into the mounting groove and is in axial sliding fit with the upper part of the mounting groove; the pressing sleeve is sleeved on the taper sleeve, and the lower part of the pressing sleeve is connected with the piston of the annular cylinder. The upper part and the lower part of the chuck clamp are stressed evenly, a workpiece is clamped stably and not prone to shifting, the structure is simple, and operation and maintenance are convenient.

Description

Double-end conical surface chuck anchor clamps

Technical Field

The utility model relates to a machining part technical field especially relates to a double-end conical surface chuck anchor clamps.

Background

The chuck fixture is a cylindrical fixture installed on a milling machine for confining a drill bit or a milling cutter, and is also a fixing device for fixing parts to be processed. The chuck clamp is applied to the machining industry, but the existing chuck clamp mostly adopts a mode of clamping by matching an upper conical surface, the workpiece is stressed unevenly from top to bottom by a clamping part, so that the extending part of the workpiece positioned on the outer side is easy to deviate, and the machining precision is reduced; in addition, the existing chuck clamp still has the problems of complex structure, complex clamping operation and the like.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art not enough, provide a double-end conical surface chuck anchor clamps, the chuck is double-end conical surface chuck, presses the cover by the drive of annular cylinder, makes the chuck about the cooperation of end conical surface press from both sides tightly, the balanced atress in chuck upper and lower part, the centre gripping work piece is stable, difficult emergence skew, and simple structure, the operation maintenance is convenient.

The utility model discloses a realize through following technical scheme:

a double-head conical chuck clamp comprises a base, a chuck, a conical sleeve and a pressing sleeve; the chuck is a double-head conical chuck, and first conical surface parts are arranged at two ends of the chuck; the base is provided with an installation groove and an annular cylinder, a second conical surface part is arranged in the installation groove, the lower end of the chuck is placed in the installation groove, and the first conical surface part at the lower end of the chuck is matched with the second conical surface part; the taper sleeve is sleeved on the chuck, a third taper surface part is arranged in the taper sleeve, and the third taper surface part is matched with the first taper surface part at the upper end of the chuck; the lower part of the taper sleeve is inserted into the mounting groove and is in axial sliding fit with the upper part of the mounting groove; the pressing sleeve is sleeved on the taper sleeve, and the lower part of the pressing sleeve is connected with the piston of the annular cylinder.

Furthermore, the outer side of the lower part of the taper sleeve is provided with axially extending sliding teeth, and the side wall of the upper part of the mounting groove is provided with a sliding groove matched with the sliding teeth. The sliding teeth and the sliding grooves which extend axially are arranged, so that the taper sleeve is guaranteed to slide axially, rotation cannot occur, and torsion of the chuck and a clamped workpiece is caused.

Further, a plurality of return springs are arranged between the bottom of the taper sleeve and the mounting groove. After the downward pressure of the pressing sleeve disappears, the reset spring pushes the taper sleeve to automatically reset, and the clamping head loosens the clamped workpiece, so that the workpiece is convenient to take out and mount.

Further, the piston is an annular piston.

Further, the pressing sleeve is detachably connected with the piston. The pressing sleeve can be taken down, so that the taper sleeve and the chuck can be taken out conveniently, and the chuck can be replaced and maintained conveniently.

Furthermore, be equipped with first expansion joint and the second expansion joint of interval distribution on the chuck, first expansion joint and second expansion joint extend along the axial, and the opening direction is opposite. So that the upper and lower parts of the chuck can contract synchronously, and the stable clamping is ensured.

Further, the first conical surface portion, the second conical surface portion and the third conical surface portion have the same taper.

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

the chuck clamp of the utility model is a double-head conical chuck, the first conical surface parts at two ends of the chuck clamp are respectively matched with the second conical surface part in the mounting groove and the third conical surface part in the taper sleeve; the annular cylinder drives the pressing sleeve to move, the pressing sleeve compresses or loosens the taper sleeve, and the clamping head clamps or loosens the workpiece. The upper part and the lower part of the chuck are stressed to clamp the workpiece, the workpiece is not easy to deviate, the clamping is stable, and the processing precision is high. And the chuck clamp has simple structure and reasonable design, is driven by the cylinder to clamp, and is simple and convenient to operate.

Drawings

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

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural view of the sliding teeth and the mounting groove sliding groove of the middle pressure sleeve of the present invention.

Fig. 3 is a schematic structural view of the middle clamping head of the present invention.

Reference numerals:

1. a base; 11. mounting grooves; 111. a second tapered surface portion; 112. a chute; 12. an annular cylinder; 121. a piston; 2. a chuck; 21. a first conical surface portion; 22. a first expansion joint; 23. a second expansion joint; 3. a taper sleeve; 31. a third conical surface portion; 32. sliding the teeth; 4. pressing the sleeve; 5. a return spring.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, an embodiment of the present invention provides a double-ended conical surface chuck fixture, which includes a base 1, a chuck 2, a taper sleeve 3, a pressing sleeve 4, and the like.

As shown in fig. 1 and 3, the collet 2 is a double-ended tapered collet, and both ends of the collet are provided with first tapered surface portions 21.

The base 1 is provided with a mounting groove 11 and an annular cylinder 12, and the annular cylinder 12 is positioned outside the mounting groove 11. The mounting groove 3 is internally provided with a second conical surface part 111, the lower end of the chuck 2 is placed in the mounting groove 11, and the first conical surface part 21 at the lower end of the chuck 2 is matched with the second conical surface part 111 in a sliding fit manner.

Taper sleeve 3 cup joints on chuck 2, and taper sleeve 3 is inside to be equipped with third conical surface portion 31, and first conical surface portion 21 looks adaptation, but sliding fit of third conical surface portion 31 and chuck 2 upper end. The lower part of the taper sleeve 3 is inserted into the mounting groove 11 and is matched with the upper part of the mounting groove 11 and can axially slide. The chuck 2 is positioned in the mounting groove 11 and the taper sleeve 3, the first conical surface part 21 at the lower end of the chuck is matched with the second conical surface part 111 in the mounting groove 11, and the first conical surface part 21 at the upper end of the chuck is matched with the third conical surface part 21 in the taper sleeve 3.

Preferably, the tapers of the first tapered surface portion 21, the second tapered surface portion 111 and the third tapered surface portion 31 are the same, so as to ensure that the stress of the chuck 2 is balanced during clamping.

The pressing sleeve 4 is sleeved on the taper sleeve 3, and the lower part of the pressing sleeve 4 is connected with the piston 121 of the annular cylinder 12. The upper and lower parts of the annular cylinder 12 are respectively provided with an air inlet and outlet which is connected with an air supply device through a pipeline, and the piston 121 slides up and down through air inlet and outlet control, so as to drive the pressing sleeve 4 to slide up and down. When the pressing sleeve 4 slides downwards, the taper sleeve 3 is pressed downwards, the first conical surface part 21 is in sliding fit with the second conical surface part 111, and the first conical surface part 21 is in sliding fit with the third conical surface part 31, so that the chuck 2 is pressed tightly and contracted mutually, and a workpiece is clamped; when the pressing sleeve 4 slides upwards and the pressure on the taper sleeve 3 is removed, the pressure on the first taper surface part 21 of the chuck 2 disappears, the chuck 2 is extended and reset, and the workpiece is loosened.

Furthermore, as shown in fig. 2, a plurality of sliding teeth 32 are arranged at the matching part of the outer side of the lower part of the taper sleeve 3 and the upper part of the mounting groove 11, and the sliding teeth 32 extend along the axial direction; correspondingly, the upper side wall of the mounting groove 11 of the base 1 is provided with a plurality of sliding grooves 112, and the sliding grooves 112 are also axially arranged and axially and slidably matched with the sliding teeth 32. The sliding teeth 32 and the sliding grooves 112 extending axially are arranged, so that the taper sleeve 3 can be effectively ensured to slide axially without rotating, the clamping head 2 and a clamped workpiece are twisted, and the machining precision is ensured.

A plurality of return springs 5 are arranged between the bottom of the taper sleeve 3 and the mounting groove 11. A plurality of reset spring 5 along 11 circumference evenly distributed of mounting groove, 5 bottoms of reset spring and 11 fixed connection of mounting groove, upper portion and 3 bottom butt of taper sleeve. After the downward pressure applied by the pressing sleeve 4 disappears, the reset spring 5 pushes the taper sleeve 3 to automatically reset upwards, and the clamping head 2 loosens the clamped workpiece, so that the workpiece is convenient to take out and mount.

The piston 121 is an annular piston, and is in sliding fit with the annular cylinder 12, and the piston 121 is driven to move up and down by the change of the air pressure in the annular cylinder 12. The piston 121 extends out of the annular cylinder 12 to be connected with the upper pressing sleeve 4, so that the pressing sleeve 4 is driven to slide up and down. The piston 121 and the pressing sleeve 4 are detachably connected. Preferably, the piston 121 is bolted to the pressure sleeve 4. The pressing sleeve 4 can be taken down, the taper sleeve 3 and the chuck 2 can be replaced, and the use is more convenient.

As shown in fig. 3, the collet 2 is a double-ended tapered collet, and the upper and lower portions are provided with first tapered surface portions 21. A plurality of first expansion joints 22 and second expansion joints 23 are arranged on the side wall of the chuck 2, and the first expansion joints 22 and the second expansion joints 23 are uniformly distributed at intervals and extend along the axial direction; one end of the first expansion joint 22 and the other end of the second expansion joint 23 are open, and the other end is a blind end, and the opening directions of the first expansion joint 22 and the second expansion joint 23 are opposite, wherein the first expansion joint 22 is open upwards, and the second expansion joint 23 is open downwards. The upper and lower parts of the chuck 2 can contract synchronously, so that stable clamping is ensured.

In the foregoing, only certain exemplary embodiments have been described briefly. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings, or are orientations and positional relationships conventionally understood by those skilled in the art, which are merely for convenience of description and simplicity of description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Claims

1. A double-end conical chuck clamp is characterized by comprising a base (1), a chuck (2), a conical sleeve (3) and a pressing sleeve (4); the chuck (2) is a double-head conical chuck, and both ends of the chuck are provided with first conical surface parts (21); the base (1) is provided with a mounting groove (11) and an annular cylinder (12), a second conical surface part (111) is arranged in the mounting groove (11), the lower end of the chuck (2) is placed in the mounting groove (11), and a first conical surface part (21) at the lower end of the chuck (2) is matched with the second conical surface part (111); the taper sleeve (3) is sleeved on the chuck (2), a third taper surface part (31) is arranged inside the taper sleeve (3), and the third taper surface part (31) is matched with a first taper surface part (21) at the upper end of the chuck (2); the lower part of the taper sleeve (3) is inserted into the mounting groove (11) and is in axial sliding fit with the upper part of the mounting groove (11); the pressing sleeve (4) is sleeved on the taper sleeve (3), and the lower part of the pressing sleeve (4) is connected with a piston (121) of the annular cylinder (12).

2. The clamp for the double-ended conical surface chuck according to claim 1, wherein the outer side of the lower part of the taper sleeve (3) is provided with axially extending sliding teeth (32), and the side wall of the upper part of the mounting groove (11) is provided with sliding grooves (112) matched with the sliding teeth (32).

3. The clamp according to claim 1 or 2, wherein a plurality of return springs (5) are arranged between the bottom of the taper sleeve (3) and the mounting groove (11).

4. The double-ended conical collet fixture of claim 1, wherein said piston (121) is an annular piston.

5. The double-ended tapered collet fixture according to claim 1 or 4, wherein the press sleeve (4) is removably attached to the piston (121).

6. The clamp for the double-ended conical surface clamp head according to claim 1, wherein the clamp head (2) is provided with a first expansion joint (22) and a second expansion joint (23) which are distributed at intervals, the first expansion joint (22) and the second expansion joint (23) extend along the axial direction, and the opening directions are opposite.

7. The double-ended tapered collet fixture according to claim 1 or 6, wherein the tapers of the first (21), second (111) and third tapered portions (31) are the same.