Double-sided two-jaw chuck

Abstract

The utility model provides a double-face two-jaw chuck which comprises a rack, a main bearing which is provided with an inner ring and an outer ring and is fixedly connected with the rack through the outer ring and arranged in the rack, and a front cover and a rear cover which are arranged on the front side and the rear side of the rack respectively and fixedly connected with the front end and the rear end of the inner ring of the main bearing. The front side of the front cover and the rear side of the rear cover are respectively provided with a pair of front clamping jaws and a pair of rear clamping jaws, and the front clamping jaw driving mechanism and the rear clamping jaw driving mechanism are respectively used for driving the pair of front clamping jaws and the pair of rear clamping jaws to move; the rotation driving mechanism is used for driving the machined part clamped by the pair of front clamping jaws and the pair of rear clamping jaws to rotate during working; the chuck is provided with a front-back through center hole in the axial direction. Through structural improvement, compared with an existing similar chuck, on the premise that the external overall size is the same, the size range of clamped pipes is larger, and the cost performance is higher; under the condition that the size of the center hole is the same, the overall size of the outer portion is obviously reduced, and manufacturing, transportation and installation cost is obviously reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to chuck technical field, concretely relates to a double -sided two claw chuck. BACKGROUND

[0002] In the occasion of cutting pipe material such as laser cutting production line, chuck needs to be used to clamp and rotate the pipe material being processed to facilitate cutting processing, such as the chuck disclosed by the authorized announcement no. CN221184761U, the chuck disclosed by the authorized announcement no. CN220217125U etc. The commonly seen chuck of the present application is usually movably provided with 4 claws around the front side chuck center hole of the front cover, and the 4 claws are arranged in a pair in horizontal and vertical directions. When in use, the two pairs of claws are used to clamp or loosen the pipe material being processed penetrating the center hole simultaneously. The prior art chuck sets 4 claws on the same side, and due to the limitation of the matched power source, rotating driving mechanism and clamping driving mechanism, when the overall size of the chuck is determined, the size of the center hole is limited, i.e. the size of the pipe material that can be clamped is limited. When the size of the center hole needs to be enlarged to meet the need of clamping large size pipe material, the overall size of the chuck needs to be greatly enlarged, and the manufacturing, transportation and installation costs are correspondingly greatly increased. SUMMARY

[0003] The utility model aims at solving the problems in the prior art, and provides a double -sided two claw chuck with improved structure, which can significantly increase the size of the center hole under the premise of equivalent overall size compared with the prior art, thereby significantly increasing the size range of the pipe material that can be clamped, and can significantly reduce the overall size of the chuck under the premise of equivalent center hole size, thereby reducing the manufacturing cost of the chuck and improving the performance-price ratio of the chuck.

[0004] The utility model discloses a double -sided two claw chuck, including the frame, its structural characteristics are: still including the main bearing with the inner ring and the outer ring and by the outer ring with the frame fixed connection is located in the frame, the front cover and the back cover are arranged on the front and back two sides of the frame and are fixedly connected with the inner ring front and back two ends of main bearing, a pair of front claws are arranged on the front side of the front cover, a pair of rear claws are arranged on the back side of the back cover, the front claw driving mechanism and the rear claw driving mechanism for driving a pair of front claws and a pair of rear claws movement are arranged respectively, and the rotating driving mechanism for driving the workpiece being clamped by a pair of front claws and a pair of rear claws to rotate is arranged, and the double -sided two claw chuck is provided with the center hole that penetrates front and back along the axial direction.

[0005] Further, the front cover is provided with two guide grooves penetrating from the outer periphery to the center hole at the middle part of the front cover; the front jaw driving mechanism comprises a front jaw driving motor fixed on the frame, a first gear in transmission connection with the front jaw driving motor, a front sliding block movably arranged in each of the two guide grooves of the front cover, and a first toothed disc rotatably arranged on the inner ring of the main bearing; the first toothed disc is a whole annular structure, the outer periphery of the first toothed disc is provided with first transmission teeth, and the front end surface of the first toothed disc and the rear end surface of the front sliding block are respectively provided with plane threads for mutual transmission; the first gear is in mesh with the first transmission teeth of the first toothed disc, and the two front sliding blocks are respectively in mesh with the plane threads on the rear end surface of the first toothed disc and the front end surface of the first toothed disc; and two front jaws are fixed on the front end surfaces of the two front sliding blocks.

[0006] Further, the rear cover is provided with two guide grooves penetrating from the outer periphery to the center hole at the middle part of the rear cover; the rear jaw driving mechanism comprises a rear jaw driving motor fixed on the frame, a second gear in transmission connection with the rear jaw driving motor, a rear sliding block movably arranged in each of the two guide grooves of the rear cover, and a second toothed disc rotatably arranged on the inner ring of the main bearing; the second toothed disc is a whole annular structure, the outer periphery of the second toothed disc is provided with second transmission teeth, and the rear end surface of the second toothed disc and the front end surface of the rear sliding block are respectively provided with plane threads for mutual transmission; the second gear is in mesh with the second transmission teeth of the second toothed disc, and the two rear sliding blocks are respectively in mesh with the plane threads on the front end surface of the second toothed disc and the rear end surface of the second toothed disc; and two rear jaws are fixed on the rear end surfaces of the two rear sliding blocks.

[0007] Further, the rear cover is provided with two guide grooves penetrating from the outer periphery to the center hole at the middle part of the rear cover; the rear jaw driving mechanism comprises a rear jaw driving motor fixed on the frame, a second gear in transmission connection with the rear jaw driving motor, a rear sliding block movably arranged in each of the two guide grooves of the rear cover, and a second toothed disc rotatably arranged on the inner ring of the main bearing; the second toothed disc is a whole annular structure, the outer periphery of the second toothed disc is provided with second transmission teeth, and the rear end surface of the second toothed disc and the front end surface of the rear sliding block are respectively provided with plane threads for mutual transmission; the second gear is in mesh with the second transmission teeth of the second toothed disc, and the two rear sliding blocks are respectively in mesh with the plane threads on the front end surface of the second toothed disc and the rear end surface of the second toothed disc; and two rear jaws are fixed on the rear end surfaces of the two rear sliding blocks.

[0008] Further, the rear cover is provided with two guide grooves penetrating from the outer periphery to the center hole at the middle part of the rear cover; the rear jaw driving mechanism comprises a rear jaw driving motor fixed on the frame, a second gear in transmission connection with the rear jaw driving motor, a rear sliding block movably arranged in each of the two guide grooves of the rear cover, and a second toothed disc rotatably arranged on the inner ring of the main bearing; the second toothed disc is a whole annular structure, the outer periphery of the second toothed disc is provided with second transmission teeth, and the rear end surface of the second toothed disc and the front end surface of the rear sliding block are respectively provided with plane threads for mutual transmission; the second gear is in mesh with the second transmission teeth of the second toothed disc, and the two rear sliding blocks are respectively in mesh with the plane threads on the front end surface of the second toothed disc and the rear end surface of the second toothed disc; and two rear jaws are fixed on the rear end surfaces of the two rear sliding blocks.

[0009] The utility model has the positive effect: the utility model discloses the structure improvement of including innovatively arranging two pairs of jaws on the front and rear sides of the frame and the front jaw driving mechanism and the rear jaw driving mechanism, which is different from the prior art in which two pairs of jaws are arranged on the same side of the chuck. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the plane structure schematic view of the utility model;

[0011] Figure 2 It is Figure 1 A-A sectional view;

[0012] Figure 3 It is the three-dimensional structure schematic view of the utility model;

[0013] Figure 4 It is the three-dimensional structure schematic view of the utility model with different observation angles; Figure 3

[0014] Figure 5 It is the structure schematic view of the utility model and the mutual cooperation between the components related to driving.

[0015] The reference signs in the above drawings are as follows:

[0016] Frame 1, main bearing 2, outer ring 21, inner ring 22, front cover 3, rear cover 4, transmission gear 41, rotary drive mechanism 5, rotary drive motor 51, drive gear 52, front clamping jaw 6, rear clamping jaw 7, front clamping jaw drive mechanism 8, front clamping jaw drive motor 81, first gear 82, first toothed disc 83, first transmission gear 83-1, flat thread 83-2, front sliding block 84, rear clamping jaw drive mechanism 9, rear clamping jaw drive motor 91, second gear 92, second toothed disc 93, second transmission gear 93-1, rear sliding block 94, center hole 100, dust cover 101. DETAILED DESCRIPTION

[0017] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0018] (Example 1)

[0019] In this embodiment, when describing the orientation, the direction facing is the front in the description, the direction facing away is the back in the description, the up-down and left-right directions of are still the up-down and left-right directions in the description. Figure 1 Figure 1 Figure 1

[0020] As shown in Figures 1 to 5 , the double-sided two-jaw chuck of the embodiment mainly comprises a frame 1, a main bearing 2, a front cover 3, a rear cover 4, a rotary drive mechanism 5, a front clamping jaw 6, a rear clamping jaw 7, a front clamping jaw drive mechanism 8, a rear clamping jaw drive mechanism 9 and a dust cover 101. The double-sided two-jaw chuck is provided with a front-rear through center hole 100 in the axial direction, and the center hole 100 is used for the workpiece to be machined to be inserted.

[0021] ​​​​The machine frame 1 is the installation base of the chuck of the present embodiment. The main bearing 2 has an outer ring 21 and an inner ring 22, and the main bearing 2 is fixedly connected with the machine frame 1 by the outer ring 21 and is installed in the machine frame 1.

[0022] The front cover 3 and the rear cover 4 are fixedly connected with the inner ring 22 of the main bearing 2 by bolts and are respectively arranged on the front and rear sides of the machine frame 1. The front cover 3 is provided with two guide grooves which are vertically arranged on the middle part of the front cover 3 and which pass through from the outer periphery to the center hole 100. The rear cover 4 is provided with two guide grooves which are horizontally arranged on the rear side of the rear cover 4 and which pass through from the outer periphery to the center hole 100. The outer periphery of the front side of the rear cover 4 is provided with a circle of transmission teeth 41.

[0023] The rotary drive mechanism 5 includes a rotary drive motor 51 and a drive gear 52 which is in transmission connection with the rotary drive motor 51. The drive gear 52 of the rotary drive mechanism 5 is in mesh with the transmission teeth 41 of the rear cover 4, so that the rear cover 4 and the front cover 3 are driven to rotate together with the inner ring 22 of the main bearing 2.

[0024] The front clamping jaw 6 and the rear clamping jaw 7 are respectively arranged in two. The front clamping jaw 6 and the rear clamping jaw 7 can adopt the common clamping jaw in the prior art.

[0025] The front clamping jaw drive mechanism 8 is used for driving the pair of front clamping jaws 6 to move towards or away from the center hole 100 in the vertical direction. As a specific implementation manner, in the present embodiment, the front clamping jaw drive mechanism 8 includes a front clamping jaw drive motor 81, a first gear 82, a first toothed disc 83, and a front sliding block 84 which is movably arranged in each of the two guide grooves of the front cover 3. The first toothed disc 83 is a structure member which is in the form of a whole ring. The outer periphery of the first toothed disc 83 is provided with first transmission teeth 83-1. The front end surface of the first toothed disc 83 is provided with a plane thread 83-2 which is used for transmission. The rear end surface of the front sliding block 84 is provided with a plane thread. The front clamping jaw drive motor 81 is fixedly arranged on the machine frame 1. The first toothed disc 83 is rotatably arranged on the inner ring 22 of the main bearing 2. The first gear 82 is in transmission connection with the front clamping jaw drive motor 81 and is in mesh with the first transmission teeth 83-1 of the outer periphery of the first toothed disc 83. The two front sliding blocks 84 are respectively in mesh with the plane thread on the rear end surface of each front sliding block 84 and the plane thread 83-2 on the front end surface of the first toothed disc 83. Each of the two front clamping jaws 6 is fixedly arranged on the front end surface of each of the two front sliding blocks 84. In operation, the front clamping jaw drive motor 81 drives the first toothed disc 83 to rotate through the first gear 82. The first toothed disc 83 drives the two front sliding blocks 84 which are in cooperation with the plane thread to move towards or away from the center hole 100 in the guide grooves (the corresponding implementation is realized by the forward and reverse rotation of the front clamping jaw drive motor 81), so as to drive the two front clamping jaws 6 to move towards or away from the center hole 100 in the vertical direction synchronously, and to realize the clamping or loosening of the workpiece which is inserted into the center hole 100.

[0026] The rear claw driving mechanism 9 is used to drive the rear claws 6 to move towards or away from the center hole 100. As a specific implementation, in this embodiment, the rear claw driving mechanism 9 includes a rear claw driving motor 91, a second gear 92, a second gear plate 93, and a rear sliding block 94 movably arranged in each of the two guide grooves of the rear cover 4; the second gear plate 93 is a circular structure, the outer periphery of the second gear plate 93 is provided with a second transmission gear 93-1, the rear end surface of the second gear plate 93 is provided with a flat thread for transmission (not shown in the figure), and the front end surface of the rear sliding block 94 is provided with a flat thread; the rear claw driving motor 91 is fixedly arranged on the rack 1, the second gear plate 93 is rotatably arranged on the inner ring 22 of the main bearing 2, the second gear 92 is in transmission connection with the rear claw driving motor 91 and meshes with the second transmission gear 93-1 on the outer periphery of the second gear plate 93, and the two rear sliding blocks 94 are each in mesh with the flat thread on the rear end surface of the second gear plate 93 through the flat thread on the front end surface thereof; each of the two rear claws 7 is fixedly arranged on the rear end surface of each of the two rear sliding blocks 94. In operation, the rear claw driving motor 91 drives the second gear plate 93 to rotate through the second gear 92, the second gear plate 93 drives the two rear sliding blocks 94 in mesh with the flat thread thereof to move synchronously towards or away from the center hole 100 in the guide groove (achieved by forward and reverse rotation of the rear claw driving motor 91), thereby driving the two rear claws 7 to move synchronously towards or away from the center hole 100 in the left and right directions, and achieving clamping or loosening of the workpiece inserted into the center hole 100.

[0027] The dust cover 101 is fixedly arranged on the rack 1 and is used to prevent dust from entering the chuck during operation. The dust cover 101 is arranged as an optional mode.

[0028] In use of the double-sided two-claw chuck, when the workpiece is inserted into the center hole 100, the front claw driving mechanism 8 drives the two front claws 6 to move synchronously towards the center hole 100 in the up and down directions to clamp the workpiece inserted into the center hole 100, and the rear claw driving mechanism 9 drives the two rear claws 7 to move synchronously towards the center hole 100 in the left and right directions to clamp the workpiece inserted into the center hole 100, after the workpiece is clamped by the two pairs of claws, the rotation driving mechanism 5 drives the rear cover 4 and the front cover 3 to rotate to make the workpiece clamped by the front and rear pairs of claws rotate, thereby facilitating cutting processing; after the cutting is completed, the rotation driving mechanism 5 is stopped, and the front claw driving mechanism 8 and the rear claw driving mechanism 9 respectively drive the two front claws 6 and the two rear claws 7 to move synchronously away from the center hole 100 on the front and rear sides to loosen the workpiece.

[0029] From the foregoing, the double-sided two-jaw chuck of the embodiment can be improved by including a pair of clamping jaws arranged on the front and rear sides of the frame 1, and the front clamping jaw driving mechanism 8 and the rear clamping jaw driving mechanism 9, so that the size of the central hole of the chuck of the embodiment can be significantly larger than the size of the central hole of the existing similar chuck under the premise of the same overall external size, that is, the range of the pipe size that can be clamped is larger, and the cost performance is higher. In the case of the same size of the central hole, the overall external size of the chuck of the embodiment is significantly reduced compared with the existing similar chuck, thereby significantly reducing the manufacturing, transportation and installation costs.

[0030] The above embodiments are descriptions of specific embodiments of the present application, not limitations of the present application. Those skilled in the art can make various modifications and changes without departing from the spirit and scope of the present application, and obtain corresponding equivalent technical solutions. Therefore, all equivalent technical solutions should be included in the patent protection scope of the present application.

Claims

1. A double-sided, two-jaw chuck, comprising a frame, characterized in that: It also includes a main bearing with an inner ring and an outer ring, which is fixedly connected to the frame by the outer ring and is located in the frame; a front cover and a rear cover, which are respectively located on the front and rear sides of the frame and fixedly connected to the front and rear ends of the inner ring of the main bearing; a pair of front jaws are provided on the front side of the front cover and a pair of rear jaws are provided on the rear side of the rear cover; a front jaw drive mechanism and a rear jaw drive mechanism are respectively used to drive the movement of the pair of front jaws and the pair of rear jaws; and a rotary drive mechanism is used to drive the workpiece clamped by the pair of front jaws and the pair of rear jaws to rotate during operation; the double-sided two-jaw chuck has a central hole that runs through the front and rear along the axial direction.

2. The double-sided two-jaw chuck according to claim 1, characterized in that: The front cover has two guide grooves running vertically from the outer periphery to the center hole in the middle. The front claw drive mechanism includes a front claw drive motor fixed on the frame, a first gear connected to the front claw drive motor, a front slider movably disposed in each of the two guide grooves of the front cover, and a first gear disk rotatably disposed on the inner ring of the main bearing. The first gear disk is an integrally annular structure with first transmission teeth on its outer periphery. The front end face of the first gear disk and the rear end face of the front slider are respectively provided with mutually cooperating planar threads for transmission. The first gear meshes with the first transmission teeth of the first gear disk, and the two front sliders are each meshed with the planar threads on the front end face of the first gear disk by the planar threads on their rear end faces. One front claw is fixedly disposed on each of the front end faces of the two front sliders.

3. The double-sided two-jaw chuck according to claim 1, characterized in that: The rear cover has two guide grooves running from the outer periphery to the center hole in the left and right directions at the middle of the rear side; the rear claw drive mechanism includes a rear claw drive motor fixedly mounted on the frame, a second gear connected to the rear claw drive motor, a rear slider movably mounted in each of the two guide grooves of the rear cover, and a second gear disk rotatably mounted on the inner ring of the main bearing; the second gear disk is an integrally circular structure, with second transmission teeth on the outer periphery of the second gear disk, and planar threads for mutual transmission on the rear end face of the second gear disk and the front end face of the rear slider respectively; the second gear meshes with the second transmission teeth of the second gear disk, and the two rear sliders are each meshed with the planar threads on the rear end face of the second gear disk by the planar threads on their front end face; one rear claw is fixedly mounted on the rear end face of each of the two rear sliders.

4. The double-sided two-jaw chuck according to claim 1, characterized in that: The front outer periphery of the rear cover is provided with transmission teeth; the rotary drive mechanism includes a rotary drive motor and a drive gear that is connected to the rotary drive motor; the drive gear meshes with the transmission teeth of the rear cover.

5. The double-sided two-jaw chuck according to any one of claims 1 to 4, characterized in that: It also includes a dust cover fixed on the frame to prevent dust from entering the double-sided two-jaw chuck.

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