CN219818078U - Circular shaft clamping disc - Google Patents

Abstract

The utility model discloses a circular shaft chuck which comprises a base, wherein a plurality of guide rails are radially and uniformly distributed on the base, clamping jaws are respectively and movably arranged in the plurality of guide rails, a driving mechanism for driving the plurality of clamping jaws to synchronously and respectively move relatively close to or far away from the guide rails is arranged on the base, the driving mechanism comprises a turntable and a driving member for driving the turntable to rotate, a plurality of driving grooves are uniformly distributed on the turntable along the circumference, one end of each driving groove is gradually and progressively increased from the other end to the distance between the center of the turntable, a first fixed shaft is respectively arranged on the plurality of clamping jaws, and the first fixed shafts are respectively and movably arranged in the plurality of driving grooves in a one-to-one correspondence manner. Compared with the transmission fit of screw teeth and plane threads in the prior art, the transmission fit of the driving groove and the first fixed shaft is faster, the clamping jaw can be rapidly driven to move, the precision requirement of the fit is low, and the processing difficulty is low.

Description

Circular shaft clamping disc

Technical Field

The utility model particularly relates to a circular shaft chuck.

Background

In machining, machining is often carried out on shaft parts, but the shaft parts are easy to rotate due to the shape characteristics of the shaft parts, difficult to position and clamp, inaccurate hole position positioning during punching, and large size deviation. In order to avoid the situation, a three-jaw chuck is generally adopted to clamp and fix the circular shaft part. However, the existing three-jaw chuck structure consists of a jaw disc body, a small bevel gear, a large bevel gear, a planar thread at the other end and three jaws. The three claws are provided with threads which are the same as the plane threads and are matched with the plane threads, and the three claws are uniformly distributed in the guide groove in the claw disc body at 120 degrees.

Based on the above, when clamping circular shaft type parts, the claw of the existing circular shaft chuck moves to be in fit transmission with the large bevel gear between the screw teeth and the plane threads, and then the claw and the large bevel gear are required to be in fit with each other with high precision, so that the processing difficulty of the claw and the large bevel gear is high, the claw of the chuck cannot rapidly move to be in fit with the circular shaft type workpieces through the screw teeth and the plane threads for transmission, and when mass parts are produced, the clamping is easy to take too long, and the production efficiency is affected.

There is thus a need for a circular shaft chuck that improves upon the above-identified problems.

Disclosure of Invention

Aiming at the defects existing in the prior art, the technical problems to be solved by the utility model are as follows: a circular shaft chuck is provided.

The utility model provides a circle axle chuck, includes the base, is radial equipartition on the base and has a plurality of guide rails, corresponds the activity respectively in a plurality of guide rails and is provided with the clamping jaw, be provided with on the base and supply to order about a plurality of clamping jaws and make relatively near or keep away from the actuating mechanism of displacement along the guide rail respectively in step, actuating mechanism includes carousel and supply to order about carousel pivoted actuating member, the circumference equipartition has a plurality of drive slots on the carousel, the one end of drive slot from the other end with the interval in carousel center is the gradual change and increases gradually and set up, is provided with fixed axle one on a plurality of clamping jaws respectively, and a plurality of fixed axle one-to-one activities set up in a plurality of drive slots.

In one embodiment, the driving member comprises a cylinder arranged on the base and a sliding block arranged on the driving shaft of the cylinder, a sliding rail is arranged on one side of the base, the sliding block is movably arranged on the sliding rail, a guide groove is formed in one side of the sliding block, a second fixing shaft is arranged on one side of the turntable, and the second fixing shaft is movably arranged in the guide groove.

In one embodiment, the rotary table is provided with an annular boss which is arranged concentrically with the rotary table, the driving grooves are located in an inner annular area of the annular boss, a plurality of protrusions are uniformly distributed on the inner side wall of the annular boss along the circumference, the distance between one end of each protrusion and the center of the annular boss is gradually increased, and one end of each clamping jaw is abutted to each protrusion.

In one embodiment, the base is provided with a boss at the same center as the turntable, the guide rail is arranged on the boss, the turntable is rotatably sleeved on the boss, and a placing groove is recessed at the center of one end of the boss.

In one embodiment, a buffer for abutting against the sliding block is arranged on the base at the side far away from the air cylinder.

In an embodiment, the clamping jaw comprises an L-shaped sliding seat movably arranged in the guide rail and a clamping head arranged at the upper end of the L-shaped sliding seat, the first fixed shaft is arranged at the lower end of the L-shaped sliding seat, one end of the lower portion of the L-shaped sliding seat is abutted to the protrusion, an annular cover plate is detachably connected to the annular boss through a screw, and the annular cover plate is limited and abutted to the upper side face of the lower portion of the L-shaped sliding seat.

In one embodiment, the annular boss is detachably connected to the turntable by a screw.

In summary, compared with the prior art, the utility model has the following beneficial effects:

the rotary table is simple in structure, the first fixed shaft on the clamping jaw is movably arranged in the driving groove of the rotary table, the distance between one end of the driving groove and the center of the rotary table is gradually increased, when the rotary table is driven to rotate, the driving groove on the rotary table rotates to abut against the first fixed shaft to move so as to drive the clamping jaw to axially move along the guide rail, clamping or loosening of a circular shaft workpiece is further realized, and compared with the transmission fit of a screw tooth and a plane screw thread in the prior art, the transmission fit of the driving groove and the first fixed shaft is faster, the clamping jaw can be rapidly driven to move, the matching precision requirement is low, and the processing difficulty is low.

Drawings

FIG. 1 is an exploded view of a circular shaft chuck according to one embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a circular shaft chuck according to an embodiment of the utility model;

fig. 3 is a top view of a rotor in an embodiment of the utility model.

Detailed Description

The utility model is further described in the following description and detailed description with reference to the drawings:

as shown in fig. 1 to 3, an embodiment of the present utility model preferably provides a circular shaft clamping disc, which includes a base 1, a plurality of guide rails 2 are radially and uniformly distributed on the base 1, clamping jaws 3 are respectively and movably disposed on the plurality of guide rails 2, a driving mechanism for driving the plurality of clamping jaws 3 to synchronously and relatively approach or separate from each other along the guide rails 2 is disposed on the base 1, the driving mechanism includes a turntable 4 and a driving member 5 for driving the turntable 4 to rotate, a plurality of driving grooves 6 are uniformly distributed on the turntable 4 along a circumference, one end of each driving groove 6 is gradually and progressively increased from the other end to a distance between centers of the turntable 4, a first fixed shaft 7 is disposed on each clamping jaw 3, and a first fixed shaft 7 is movably disposed in the plurality of driving grooves 6 in a one-to-one correspondence manner.

The fixed shaft on the clamping jaw is movably arranged in the driving groove of the rotary table, one end of the driving groove is gradually increased to the distance between the other end of the driving groove and the center of the rotary table, and then when the rotary table is driven to rotate by the driving member, the driving groove on the rotary table rotates to abut against the fixed shaft to move so as to drive the clamping jaw to axially move along the guide rail, and then the clamping or loosening of the circular shaft workpiece is realized.

And the transmission cooperation of the driving groove and the first fixed shaft is faster in transmission cooperation of the screw teeth and the plane threads in the prior art, the clamping jaw can be rapidly driven to move, and the requirement on the precision of the cooperation is low, so that the processing difficulty is low.

Further, the driving member 5 includes a cylinder 51 disposed on the base 1 and a slider 52 disposed on a driving shaft of the cylinder 51, a sliding rail 53 is disposed on one side of the base 1, the slider 52 is movably disposed on the sliding rail 53, a guiding groove 54 is formed on one side of the slider 52, a second fixing shaft 55 is disposed on one side of the turntable 4, and the second fixing shaft 55 is movably disposed in the guiding groove 54.

Specifically, the sliding block is driven to move through the air cylinder, then the sliding block moves along the axial direction of the sliding rail, the guide groove on the sliding block is matched with the second fixed shaft on the rotary table, so that when the sliding block moves, the guide groove abuts against the second fixed shaft to move, the second fixed shaft is abutted against to drive the rotary table to rotate, and the rotary table is rapidly rotated in place through the air cylinder, so that rapid in-place clamping of round shaft workpieces of the same specification and size is facilitated.

Further, an annular boss 41 is arranged on the rotary table 4 and concentric with the rotary table, a plurality of driving grooves 6 are located in an inner ring area of the annular boss 41, a plurality of protrusions 42 are uniformly distributed on the inner side wall of the annular boss 41 along the circumference, one end of each protrusion 42 is gradually increased from the other end to the distance between the centers of the annular boss 41, and one end of each clamping jaw 3 is abutted to each protrusion 42.

Specifically, the protruding structure is similar to the driving groove through propping against one ends of the clamping jaws, and the distance between one ends of the protruding structure and the center of the annular boss (rotary table) is gradually increased gradually, so that when the rotary table rotates to drive the clamping jaws to relatively close to each other, the clamping jaws always keep a propping state propped against one ends of the clamping jaws in a one-to-one correspondence manner, and further stress concentration of clamping workpieces of the clamping jaws is avoided to act on the first fixed shaft, and the first fixed shaft is easily damaged. Therefore, when the clamping jaws clamp a workpiece, the stress effect is dispersed on the annular boss, and the driving groove only provides limit driving for driving the clamping jaws to relatively move away from the displacement.

Further, a boss 11 is arranged on the base 1 at the same center as the turntable 4, the guide rail 2 is arranged on the boss 11, the turntable 4 is rotatably sleeved on the boss 11, and a placing groove 12 is recessed in the center of one end of the boss 11. Specifically, the circular shaft parts are inserted into the placing grooves to achieve pre-guiding positioning, so that the clamping jaws are relatively close to the displacement to clamp the circular shaft workpieces.

Further, a damper 13 for abutting against the slider 52 is provided on the base 1 on a side away from the cylinder 51. Specifically, the buffer of the sliding block is realized through the buffer.

Further, the clamping jaw 3 comprises an L-shaped sliding seat 31 movably arranged in the guide rail 2 and a clamping head 32 arranged at the upper end of the L-shaped sliding seat 31, the first fixed shaft 7 is arranged at the lower end of the L-shaped sliding seat 31, one end of the lower portion of the L-shaped sliding seat 31 is abutted to the protrusion 42, an annular cover plate 33 is detachably connected to the annular boss 41 through a screw, and the annular cover plate 33 is in limiting abutment with the upper side face of the lower portion of the L-shaped sliding seat 31.

Further, the annular boss 41 is detachably connected to the turntable 4 by a screw.

While there has been shown and described what is at present considered to be the fundamental principles and the main features of the utility model and the advantages thereof, it will be understood by those skilled in the art that the present utility model is not limited to the foregoing embodiments, but is described in the foregoing description merely illustrates the principles of the utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model as hereinafter claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a circle axle chuck, includes base (1), is radial equipartition on base (1) and has a plurality of guide rails (2), and a plurality of guide rails (2) are respectively corresponding the activity and are provided with clamping jaw (3), be provided with on base (1) and supply to order about a plurality of clamping jaw (3) to make relatively along guide rail (2) respectively and be close to or keep away from the actuating mechanism of displacement, its characterized in that: the driving mechanism comprises a rotary table (4) and driving members (5) for driving the rotary table (4) to rotate, a plurality of driving grooves (6) are uniformly distributed on the rotary table (4) along the circumference, one end of each driving groove (6) is gradually increased from the other end to the distance between the centers of the rotary table (4), a plurality of clamping jaws (3) are respectively provided with a first fixed shaft (7), and the first fixed shafts (7) are movably arranged in the driving grooves (6) in a one-to-one correspondence manner.

2. A circular shaft chuck as in claim 1, wherein: the driving member (5) comprises an air cylinder (51) arranged on the base (1) and a sliding block (52) arranged on a driving shaft of the air cylinder (51), a sliding rail (53) is arranged on one side of the base (1), the sliding block (52) is movably arranged on the sliding rail (53), a guide groove (54) is formed in one side of the sliding block (52), a second fixing shaft (55) is arranged on one side of the rotary table (4), and the second fixing shaft (55) is movably arranged in the guide groove (54).

3. A circular shaft chuck as in claim 1, wherein: the rotary table (4) is provided with an annular boss (41) which is arranged concentrically with the rotary table, a plurality of driving grooves (6) are arranged in an inner annular area of the annular boss (41), a plurality of protrusions (42) are uniformly distributed on the inner side wall of the annular boss (41) along the circumference, one end of each protrusion (42) is gradually increased from the other end to the center of the annular boss (41), and one end of each clamping jaw (3) is abutted to the protrusions (42).

4. A circular shaft chuck as in claim 2, wherein: the base (1) and the rotary table (4) are concentrically provided with a boss (11), the guide rail (2) is arranged on the boss (11), the rotary table (4) is rotationally sleeved on the boss (11), and a placing groove (12) is concaved inwards at the center of one end of the boss (11).

5. A circular shaft chuck as in claim 2, wherein: a buffer (13) for abutting against the sliding block (52) is arranged on one side, away from the air cylinder (51), of the base (1).

6. A circular shaft chuck according to claim 3, wherein: clamping jaw (3) are including the activity setting in L type slide (31) in guide rail (2) and set up in chuck (32) of L type slide (31) upper end, fixed axle one (7) set up in L type slide (31) lower extreme, the one end butt of L type slide (31) lower part in on protruding (42), be connected with annular apron (33) on annular boss (41) through the screw can be dismantled, the spacing butt in the upside of L type slide (31) lower part of annular apron (33).

7. A circular shaft chuck according to claim 3, wherein: the annular boss (41) is detachably connected to the rotary table (4) through a screw.