CN210524176U

CN210524176U - Chuck rotary body

Info

Publication number: CN210524176U
Application number: CN201921349827.8U
Authority: CN
Inventors: 常勇; 麦裕强
Original assignee: Foshan Beyond Laser Technology Co Ltd
Current assignee: Guangdong Hongshi Laser Technology Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-05-15
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a chuck is turned around, include the edge four jack catchs that the direction of rotation equipartition of chuck rotator set up, four jack catchs are last jack catch, lower jack catch, left jack catch and right jack catch respectively, go up the jack catch and set up with lower jack catch relatively, and left jack catch sets up with right jack catch relatively, and four jack catchs all set up including the claw that is used for the clamping work piece, the claw symmetry of relative jack catch, and the claw is followed the crisscross setting of rotation axis direction, the claw of symmetry can be seamless contact. The utility model discloses because the claw of symmetry can seamless contact, can the centre gripping pipe diameter be close to 0 mm's tubular product to this chuck rotator zero portion reduces, simple structure, the maintenance of being convenient for.

Description

Chuck rotary body

Technical Field

The utility model relates to a mechanical fixture technical field, concretely relates to chuck is rotated roundly.

Background

At present, the chuck rotating body used by the laser pipe cutting machine has the problems of complex structure, many parts, high failure rate, troublesome maintenance and the like, the chuck rotating body is required to be disassembled for maintenance in the maintenance process, the maintenance is very inconvenient, and the clamping jaws of the existing chuck rotating body can only clamp pipes with the diameter of more than 10mm basically and cannot be used for cutting the pipes with extremely small pipe diameters.

For example, utility model CN201520966584.8 discloses a chuck, including disk seat and jack catch seat, be equipped with four jack catchs on the jack catch seat, the periphery of disk seat and jack catch seat links together, a rectangular shape through-hole is left at the connection position, be equipped with inner tube and the outer tube with the axle center on the disk seat, the inner tube is grown in the outer tube, the cover has outer locking dish on the inner tube, the cover has interior locking dish on the outer tube, it has the arc through-hole of two symmetries to open on the outer locking dish, wherein two jack catchs pass arc through-hole and interior locking dish threaded connection, another two jack catchs and outer locking dish threaded connection, locking dish and interior locking dish's periphery is opened respectively outward has a locking hole, the locking hole is located rectangular shape through-hole. Although the chuck can clamp the pipe by adjusting the distance between the clamping jaws, the clamping effect is good, but the chuck cannot clamp the pipe with extremely small pipe diameter.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an object of the utility model is to provide a chuck is rotated, and it includes jack catch, claw arm, sliding block set, backup pad, interior synchronization disk, outer synchronization disk, cylinder, cage support ring and base, this chuck rotator has simple structure, easy maintenance, can press from both sides the advantage of the minimum tubular product of pipe diameter.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

the utility model provides a chuck is turned, includes the edge four jack catchs that the direction of rotation equipartition of chuck rotator set up, four the jack catch is last jack catch, lower jack catch, left jack catch and right jack catch respectively, go up the jack catch with the jack catch sets up relatively down, left side jack catch with right side jack catch sets up relatively, four the jack catch all is including the claw that is used for the clamping work piece, and the claw of relative jack catch with the rotation axis of chuck rotator sets up as the central line symmetry, go up the jack catch with each claw of jack catch symmetry down is right to reach left side jack catch with each claw of right side jack catch symmetry is right to follow the rotation axis direction sets up in a staggering way, the symmetry can not have the gap contact between the claw.

Preferably, each of the four claws includes two claw portions arranged at intervals in the direction of the rotation axis, the two claw portions of the upper claw are respectively a first claw portion and a second claw portion, the two claw portions of the lower claw are respectively arranged symmetrically to the first claw portion and the second claw portion, a first claw portion pair and a second claw portion pair are respectively formed, the two claw portions of the left claw are respectively a third claw portion and a fourth claw portion, the two claw portions of the right claw are respectively arranged symmetrically to the third claw portion and the fourth claw portion, a third claw portion pair and a fourth claw portion pair are respectively formed, and the first claw portion pair, the third claw portion pair, the second claw portion pair and the fourth claw portion pair are arranged in this order in the direction of the rotation axis, so that the workpiece can be clamped more stably.

Preferably, a gap is provided between the adjacent pairs of the claw portions in the direction of the rotation axis, and by doing so, friction between the claw portions is avoided.

Preferably, the claw portion includes an abutting surface that contacts the workpiece, and the abutting surface is chamfered at four peripheries thereof, and by doing so, since the abutting surface is in contact with the workpiece, finish machining is required, and the provision of the chamfer reduces the area of finish machining of the abutting surface.

Preferably, the claw parts are provided with V-shaped grooves in the direction perpendicular to the rotation axis, so that each claw part is provided with two interference surfaces.

Preferably, the clamping device further comprises four claw arms corresponding to the four claws one to one, the claw arms comprise installation surfaces connected with the claws, groove structures are arranged on the installation surfaces in the direction perpendicular to the rotation axis, the claws are provided with protruding structures corresponding to the groove structures, and the claws are convenient to position and install through the arrangement.

Preferably, the device also comprises a base, an outer synchronous disc, an inner synchronous disc, a supporting plate, a sliding block assembly, a cylinder and a cage type supporting ring;

the two cylinders are respectively an outer synchronous disc driving cylinder and an inner synchronous disc driving cylinder, the cylinder bodies of the two cylinders are hinged with the base, the piston rod of the outer synchronous disc driving cylinder and the piston rod of the inner synchronous disc driving cylinder are respectively hinged with the outer synchronous disc and the inner synchronous disc, and the inner synchronous disc and the outer synchronous disc are provided with centrally symmetrical apodized notches;

the slider subassembly includes mobilizable slider, with slider fixed connection's driven post and do the slider guide holder of slider direction, the claw arm with slider fixed connection, the guide holder with backup pad fixed connection, the backup pad with cage support ring fixed connection, the backup pad is followed the direction of rotation sets up the straight notch of four equipartitions, driven post passes straight notch and apodization notch in proper order, through setting up like this, makes the cylinder can start the jack catch carries out the tensioning action.

Preferably, the track-changing notch is transited from a far end point to a near end point in the radial direction of the synchronous disc, the distance between each point on the track of the track-changing notch and the center of the synchronous disc is gradually decreased along the direction from the far end point to the near end point, and the far end point and the near end point of the track-changing notch are not positioned on the same diameter of the synchronous disc.

Preferably, the diameter of the driven column, the width of the straight notch and the width of the variable-track notch are equal, and the error size of the cylinder for controlling the action of the clamping jaws is reduced through the arrangement.

Preferably, the automatic positioning device further comprises a mandrel, the mandrel is arranged on the base, the inner synchronous disc and the outer synchronous disc are sequentially sleeved on the mandrel, the surface of the outer synchronous disc protrudes out of the surface of the mandrel to form a positioning groove, the supporting plate is provided with a mounting block which protrudes correspondingly to the positioning groove, and the supporting plate is convenient to position and mount.

Compared with the prior art, the utility model discloses profitable technological effect has been obtained:

1. because the chuck rotating body has less parts, the structure is simple, and the maintenance of the chuck rotating body is convenient.

2. As the claw parts of the claws are arranged along the rotation axis in a staggered way, the symmetrical claw parts can be in seamless contact, and a workpiece with the pipe diameter close to 0mm can be clamped.

Drawings

Fig. 1 is a schematic side view of a chuck rotating body assembly according to an embodiment of the present invention.

Fig. 2 is a partially enlarged schematic side view of a chuck rotating body assembly according to an embodiment of the present invention.

Fig. 3 is a schematic sectional view of a chuck rotating body assembly according to an embodiment of the present invention.

Fig. 4 is a schematic axial view of the explosive structure of the chuck rotating body according to the embodiment of the present invention.

Wherein, the technical characteristics that each reference numeral refers to are as follows:

1. a first pair of claw portions; 2. a second pair of claw portions; 3. a third jaw pair; 4. a fourth pair of claws; 5. a rotation axis; 6. a support plate; 7. a living hinge post; 8. a cage support ring; 9. a base; 10. a piston rod; 11. a cylinder body; 12. the outer synchronous disc drives the cylinder; 13. the inner synchronous disc drives the cylinder; 15. a mandrel; 16. a claw portion; 17. a claw arm; 18. a slider; 19. a guide seat; 20. a driven column; 21. a straight notch; 22. an inner synchronization disc; 23. an outer synchronization disc; 24. an orbital transfer notch; 25. fixing the hinged column; 31. an upper jaw; 32. a lower jaw; 33. a left jaw; 34. a right jaw;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following specific embodiments.

Referring to fig. 1 to 4, the present embodiment discloses a chuck rotating body, including four jaws uniformly distributed along a rotation direction of the chuck rotating body, where the four jaws are an upper jaw 31, a lower jaw 32, a left jaw 33, and a right jaw 34, the upper jaw 31 is disposed opposite to the lower jaw 32, the left jaw 33 is disposed opposite to the right jaw 34, the four jaws each include a jaw 16 for clamping a workpiece, the jaws 16 of the opposite jaws are symmetrically disposed with respect to a rotation axis 5 of the chuck rotating body, each jaw pair of the upper jaw 31 symmetric to the lower jaw 32 and each jaw pair of the left jaw 33 symmetric to the right jaw 34 are staggered along the rotation axis direction, and the symmetrically disposed jaws 16 may contact without a gap, in other words, the four jaws can clamp a pipe with a pipe diameter close to 0 mm.

More specifically, the four claws each include two claws 16 arranged at intervals in the direction of the rotation axis 5, the two claws 16 of the upper claw 31 are respectively a first claw and a second claw, the two claws 16 of the lower claw 32 are respectively arranged symmetrically with the first claw and the second claw around the rotation axis 5 to respectively form a first claw pair 1 and a second claw pair 2, the two claws of the left claw 33 are respectively a third claw and a fourth claw, the two claws of the right claw 34 are respectively arranged symmetrically with the third claw and the fourth claw around the rotation axis 5 to respectively form a third claw pair 3 and a fourth claw pair 4, the first claw pair 1, the third claw pair 3, the second claw pair 2 and the fourth claw pair 4 are arranged in sequence in the direction of the rotation axis 5, and in this arrangement, the same claw is provided with two claws 16 arranged at intervals in the direction of the rotation axis 5, so that a pair of opposite clamping jaws can clamp two positions of a workpiece, and the workpiece can be clamped more stably. Gaps exist between the adjacent claw part pairs along the direction of the rotation axis 5, namely, gaps exist between the first claw part pair 1 and the third claw part pair 3, between the third claw part pair 3 and the second claw part pair 2, and between the second claw part pair 2 and the fourth claw part pair 4 along the direction of the rotation axis 5, and the clamping of the clamping claws on a workpiece causes friction between the adjacent claw part pairs. The claw portion 16 includes an abutting surface that contacts the workpiece, four peripheries of the abutting surface are provided with chamfers, and since the abutting surface is in contact with the work, accuracy needs to be ensured because the abutting surface needs to be finished, and four peripheries of the abutting surface are provided with chamfers to thereby reduce the area of the abutting surface finish, in other words, the production cost is reduced. Further, the claw portions 16 are provided with an i "V" shaped groove in a direction perpendicular to the rotation axis 5, so that each claw portion 16 is formed with two abutting surfaces, which not only further reduces the area for finishing the abutting surfaces, but also enables a pair of opposing claws to grip four positions of the workpiece, and further more stably grips the workpiece.

The chuck rotator further comprises claw arms 17, a sliding block assembly, a supporting plate 6, an outer synchronizing disc 23, an inner synchronizing disc 22, a cylinder, a cage-type supporting ring 8 and a base 9, wherein the claw arms 17 correspond to the four claws one to one respectively, in other words, the claw arms 17 comprise upper claw arms, lower claw arms, left claw arms and right claw arms, the four claw arms 17 comprise installation surfaces connected with the claws, the installation surfaces are provided with groove structures along the direction perpendicular to the rotation axis 5, the four claws are provided with protruding structures corresponding to the groove structures, and the claws are convenient to locate and install on the claw arms 17.

The four slide block assemblies respectively correspond to the four claw arms 17 one by one, in other words, each slide block assembly comprises an upper slide block assembly, a lower slide block assembly, a left slide block assembly and a right slide block assembly, each slide block assembly comprises a movable slide block 18, a guide seat 19 for providing a guide effect for the slide block 18 and a driven column 20 fixedly connected with the slide block 18, and the four claw arms 17 are respectively and fixedly connected with the corresponding slide blocks 18.

The cage type support ring is arranged on the base 9, a mandrel 15 is arranged at the center of the base 9, the mandrel 15 is provided with a raised limiting ring along the circumferential direction, the limiting ring is used for limiting and positioning the installation positions of the inner synchronous disc 22 and the outer synchronous disc 23, the inner synchronous disc 22 is sleeved on the mandrel 15 until abutting against the limiting ring, the outer synchronous disc 23 is sleeved on the mandrel 15 until abutting against the inner synchronous disc 22, the base 9, the cage type support ring 8 and the synchronous discs form an installation space of an air cylinder, the air cylinder is arranged on the base 9 and is provided with two air cylinders which are respectively an inner synchronous disc driving air cylinder 13 and an outer synchronous disc driving air cylinder 12, the inner synchronous disc driving air cylinder 13 and the outer synchronous disc driving air cylinder 12 are symmetrically arranged by taking the rotation axis 5 as a central line, the air cylinder comprises a cylinder body 11 and a piston rod 10 which is arranged on the cylinder body 11 and can move in a telescopic way, two fixed hinge columns, the cylinder bodies 11 of the two cylinders are respectively hinged with the corresponding fixed hinge columns 25, so that the two cylinders can respectively rotate around the axes of the corresponding fixed hinge columns 25, the inner synchronous disc 22 and the outer synchronous disc 23 are respectively provided with the movable hinge columns 7, the two movable hinge columns 7 are arranged in a central symmetry manner, the piston rods 10 of the inner synchronous disc driving cylinder 13 and the outer synchronous disc driving cylinder 12 are respectively hinged with the movable hinge columns 7 of the inner synchronous disc 22 and the outer synchronous disc 23, the piston rods 10 of the inner synchronous disc driving cylinder 13 and the outer synchronous disc driving cylinder 12 can respectively drive the inner synchronous disc 22 and the outer synchronous disc 23 to rotate around the rotation axis 5, the surface of the outer synchronous disc 23 is higher than the surface of the mandrel 15 to form a positioning groove, the support plate 6 is provided with a mounting block which corresponds to the positioning groove, and the mounting block of the support plate 6 is sunk into the positioning groove to facilitate the positioning and the mounting of the support plate 6, two centrosymmetric track-changing notches 24 are respectively arranged on the inner synchronous disk 22 and the outer synchronous disk 23, and the track-changing notches mean that the track lines of the notches are gradually-changed curves, such as Archimedes spiral lines or involute curves; the pressure angle pressure formed by the variable-track notch on the claw arm is different from that of the arc notch, so that the claw arm can be better pushed to move; the transition of the apodization notch 24 from the distal end point to the proximal end point in the radial direction of the synchronization disc, the distance between each point on the track of the apodization notch 24 and the center of the synchronization disc gradually decreases in the direction from the distal end point to the proximal end point, and the distal and proximal points of the apodized notches 24 are not on the same diameter of the synchronization disc, thus controlling the track of the tensioning movement of the clamping jaws, four straight notches 21 are uniformly distributed on the supporting plate 6 along the rotating direction, used for limiting the track of the clamping jaw tensioning movement, a guide seat 19 is sleeved on the sliding block 18 and fixedly installed with the supporting plate 6, a driven column 20 sequentially passes through a straight notch 21 and an orbital transfer notch 24, the opposite driven column 20 passes through the orbital transfer notch 24 corresponding to the same synchronous disc, therefore, the track of the clamping jaw tensioning movement is controlled, the diameter of the driven column 20, the width of the straight notch 21 and the width of the track changing notch 24 are equal, and therefore the error size of the cylinder driving the clamping jaw can be reduced.

The utility model discloses use of embodiment:

the air pipe interfaces at the same positions of the inner synchronous disk driving air cylinder 13 and the outer synchronous disk driving air cylinder 12 are both connected with the same air pipe, namely, the extension and retraction synchronous actions of the piston rods 10 of the inner synchronous disk driving air cylinder 13 and the outer synchronous disk driving air cylinder 12. When a workpiece needs to be clamped, the piston rods 10 of the inner synchronous disc driving cylinder 13 and the outer synchronous disc driving cylinder 12 extend out from the view angle of looking towards the clamping jaws, since the piston rod 10 is hinged to the timing disc such that the inner 22 and outer 23 timing discs are driven to rotate in a counterclockwise direction, under the condition that the apodized notch 24 and the straight notch 21 are commonly restricted, the driven column 20 moves from the distal end point to the proximal end point in the radial direction of the synchronizing disc, because the driven column 20 is fixedly connected with the slide block 18, the slide block 18 is fixedly connected with the claw arm 17, so that the opposite jaws move towards each other until the contact surface of the jaw 16 contacts with the workpiece, the piston rods 10 of the inner synchronous disk driving cylinder 13 and the outer synchronous disk driving cylinder 12 stop extending, however, the piston rods 10 of the inner synchronous disc driving cylinder 13 and the outer synchronous disc driving cylinder 12 still have a tendency to extend out, so that the jaws can clamp a workpiece for processing.

When the workpiece is machined and needs to be disassembled, the air flowing directions in the air pipes are opposite, so that the piston rods 10 of the inner synchronous disc driving cylinder 13 and the outer synchronous disc driving cylinder 12 are contracted to the limit position, the inner synchronous disc 22 and the outer synchronous disc 23 are driven to rotate in the clockwise direction, the driven column 20 moves from the radial near end point of the synchronous disc to the far end point under the limit of the track changing notch 24 and the straight notch 21, opposite clamping jaws move away from each other, and the workpiece is disassembled after being loosened.

Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the utility model in any way.

Claims

1. The utility model provides a chuck swivel, its characterized in that includes and follows four jack catchs that the direction of rotation equipartition of chuck swivel body set up, four the jack catch is last jack catch, lower jack catch, left jack catch and right jack catch respectively, go up the jack catch with the jack catch sets up relatively down, left side jack catch with right side jack catch sets up relatively, four the jack catch all is including the claw that is used for the clamping work piece, and the claw of two relative jack catchs with the rotation axis of chuck swivel body sets up as the central line symmetry, go up the jack catch with each claw of jack catch symmetry down right with each claw of right side jack catch symmetry is right to be followed the crisscross setting of rotation axis direction, two of symmetry can seamless contact between the claw.

2. The chuck rotating body according to claim 1, wherein each of the four claws includes two claw portions arranged at intervals in the rotation axis direction, the two claw portions of the upper claw are respectively a first claw portion and a second claw portion, the two claw portions of the lower claw are respectively arranged symmetrically to the first claw portion and the second claw portion to respectively form a first claw portion pair and a second claw portion pair, the two claw portions of the left claw are respectively a third claw portion and a fourth claw portion, the two claw portions of the right claw are respectively arranged symmetrically to the third claw portion and the fourth claw portion to respectively form a third claw portion pair and a fourth claw portion pair, and the first claw portion pair, the third claw portion pair, the second claw portion pair and the fourth claw portion pair are sequentially arranged in the rotation axis direction.

3. The chuck rotating body according to claim 2, wherein a gap exists between adjacent pairs of the claw portions in the direction of the rotation axis.

4. The chuck rotating body according to claim 1, wherein the claw portion includes an interference surface which contacts the workpiece, and four peripheries of the interference surface are chamfered.

5. The chuck swivel according to claim 4, wherein the claw portions are provided with "V" shaped grooves in a direction perpendicular to the rotation axis so that each claw portion is formed with two interference surfaces.

6. The chuck rotator according to any one of claims 1 to 5, further comprising claw arms corresponding to four of the claws one by one, the claw arms including mounting surfaces connected to the claws, the mounting surfaces being provided with groove structures in a direction perpendicular to the rotation axis, and the claws being provided with protrusion structures corresponding to the groove structures.

7. The chuck rotary body according to claim 6, further comprising a base, an outer synchronizing disk, an inner synchronizing disk, a support plate, a slider assembly, a cylinder and a cage support ring;

the slider component comprises a movable slider, a driven column fixedly connected with the slider and a slider guide seat guided by the slider, a claw arm is fixedly connected with the slider, the guide seat is fixedly connected with a support plate, the support plate is fixedly connected with a cage-shaped support ring, the support plate is arranged along a straight notch with four uniform distributions in the rotating direction, and the driven column sequentially passes through the straight notch and an apodization notch.

8. The chuck rotator according to claim 7, wherein the variable track notch transitions from a distal end point to a proximal end point in a radial direction of the synchronous disk, a distance between each point on the variable track notch track and a center of the synchronous disk gradually decreases from the distal end point to the proximal end point, and the distal end point and the proximal end point of the variable track notch are not located on the same diameter of the synchronous disk.

9. The chuck rotator according to claim 7 or 8, wherein the diameter of the driven post, the width of the straight slot and the width of the variable track slot are all equal.

10. The chuck rotating body as claimed in claim 7 or 8, further comprising a spindle, wherein the spindle is disposed on a base, the inner synchronization disc and the outer synchronization disc are sequentially sleeved on the spindle, a positioning groove is formed on the surface of the outer synchronization disc protruding from the surface of the spindle, and the supporting plate is provided with a mounting block protruding corresponding to the positioning groove.