CN114453930B - Rotary clamping device - Google Patents

Abstract

The application provides a gyration clamping device includes: the mounting seat is suitable for being fixedly mounted on the rack; a drive shaft adapted to pass longitudinally through the mount; the clamping assembly is fixedly arranged at the top of the transmission shaft and is suitable for clamping and fixing a workpiece; the rotating assembly is connected with the transmission shaft, is suitable for driving the transmission shaft to rotate and is used for switching the processing stations of the workpiece; and the positioning assembly is arranged between the mounting seat and the transmission shaft, is suitable for locking the rotation angle of the transmission shaft and is used for keeping the processing station of the workpiece. The device has the advantages of compact structure, centralized functions, safety, reliability and high precision.

Description

Rotary clamping device

Technical Field

The application relates to the field of machining equipment, in particular to a clamping device.

Background

The automobile differential mechanism can realize a mechanism that left and right (or front and rear) driving wheels rotate at different rotating speeds. A cross shaft (differential shaft) is one of key parts of an automobile differential and is used for transmitting torque and motion; as shown in fig. 1, the cross 10 includes a base 10a and shaft bodies 10b extending from the base 10a in the front-rear and left-right directions, and a circular hole 10c is usually formed through the base 10 a. The existing cross shaft processing method generally adopts different numerical control lathes to process step by step, so that the problems of high production labor intensity, high cost, low efficiency, large production floor area, high energy consumption and the like exist.

Therefore, how to improve the existing cross shaft machining equipment to overcome the above problems is a problem to be urgently solved by those skilled in the art.

Disclosure of Invention

An object of this application is to provide a compact structure, the function is concentrated, safe and reliable, the rotary clamping device that the precision is high.

It is a further object of the present application to provide a positioning assembly that is accurate, safe and reliable.

In order to achieve the above purpose, the technical scheme adopted by the application is as follows: a swivel clamp apparatus, comprising:

the mounting seat is suitable for being fixedly mounted on the rack;

a drive shaft adapted to pass longitudinally through the mount;

the clamping assembly is fixedly arranged at the top of the transmission shaft and is suitable for clamping and fixing a workpiece;

the rotating assembly is connected with the transmission shaft, is suitable for driving the transmission shaft to rotate and is used for switching the processing stations of the workpiece;

and the positioning assembly is arranged between the mounting seat and the transmission shaft, is suitable for locking the rotation angle of the transmission shaft and is used for keeping the processing station of the workpiece.

As an improvement, the rotary clamping device further comprises a lifting assembly, wherein the lifting assembly is connected with the transmission shaft and is suitable for driving the transmission shaft to lift along the longitudinal direction so as to drive the positioning assembly to switch between a locking state and an unlocking state; when the positioning assembly is in an unlocking state, the rotating assembly is suitable for driving the transmission shaft to rotate.

Preferably, the positioning assembly comprises a fixed gear ring and a positioning tooth holder, the fixed gear ring is fixedly arranged on the mounting seat, the positioning tooth holder is fixedly arranged on the transmission shaft, and the lifting assembly is suitable for driving the fixed gear ring and the positioning tooth holder to approach or separate from each other through the transmission shaft; when the fixed gear ring and the positioning tooth holder approach to each other, the fixed gear ring and the positioning tooth holder are engaged and limited to rotate relatively, and the positioning assembly is in a locking state; when the fixed gear ring and the positioning tooth holder are far away, the fixed gear ring and the positioning tooth holder are tripped and can rotate relatively, and the positioning assembly is in an unlocking state.

Furthermore, convex teeth corresponding to the processing stations of the workpiece are arranged on the fixed gear ring, and a tooth socket matched with the convex teeth is formed in the positioning tooth holder; when the fixed gear ring and the positioning tooth holder are close to each other, the convex teeth are suitable for entering the tooth grooves to realize locking, and when the fixed gear ring and the positioning tooth holder are far away from each other, the convex teeth are suitable for being separated from the tooth grooves to realize unlocking.

As an improvement, a tooth block is detachably arranged on the positioning tooth base, and the tooth socket is arranged on the tooth block.

Preferably, the positioning tooth holder is transversely provided with a mounting groove, the tooth block is suitable for transversely entering and exiting the mounting groove, and the fastener is suitable for longitudinally penetrating through the positioning tooth holder and fixing the tooth block in the mounting groove;

Furthermore, the cross sections of the convex teeth and the tooth grooves are of corresponding trapezoid structures, and the cross sections of the tooth blocks and the mounting grooves are of corresponding inverted trapezoid structures;

furthermore, the convex teeth and the tooth grooves are respectively provided with four convex teeth and evenly distributed along the circumferential direction, and the rotating assembly and the positioning assembly are matched to drive the transmission shaft to rotate for 90 degrees at one time.

Preferably, the clamping assembly comprises a clamping disc, a pull rod and a clamping power source, a pull rod channel is longitudinally formed in the transmission shaft, the clamping disc is suitable for being fixedly arranged at the top of the transmission shaft, the clamping power source is fixedly arranged at the bottom of the transmission shaft, a split clamping flap is arranged at the top of the clamping disc, a conical pull head matched with the split clamping flap is arranged at the top of the pull rod, and the pull rod is suitable for penetrating through the pull rod channel and is connected with the clamping power source; the split clamping flap is suitable for being inserted into the workpiece, the clamping power source is suitable for driving the pull rod to lift along the longitudinal direction, and then the conical pull head is pulled to act on the split clamping flap to enable the split clamping flap to be unfolded or folded, so that the workpiece is clamped or loosened.

Preferably, the rotary assembly comprises a power seat, a rotary power source, a driving gear, a driven gear and a bearing set, the power seat is suitable for being fixedly arranged at the bottom of the transmission shaft, the rotary power source is fixedly arranged on the power seat, the driving gear is concentrically and fixedly connected with an output shaft of the rotary power source, the driven gear is concentrically and fixedly connected with the transmission shaft, the driving gear is meshed with the driven gear, the bearing set is fixedly arranged in the mounting seat, and the transmission shaft is suitable for penetrating through the bearing set to rotate; the rotary power source is suitable for driving the transmission shaft to rotate in the bearing set through the matching of the driving gear and the driven gear.

Preferably, the lifting assembly uses an oil cylinder as a lifting power source, the lifting assembly comprises a cylinder barrel, an end cover and a piston, the cylinder barrel is fixedly arranged in the mounting seat, the end cover is fixedly arranged on the cylinder barrel, the piston is fixedly arranged on the transmission shaft, the cylinder barrel and the end cover define an oil cavity, the piston is suitable for being arranged in the oil cavity in a longitudinally sliding mode, two ends of the transmission shaft respectively penetrate through the cylinder barrel and the end cover in a sealing mode, and oil pressure change in the oil cavity is suitable for driving the transmission shaft to lift vertically.

Preferably, the transmission shaft comprises a first shaft section, a second shaft section, a third shaft section, a fourth shaft section and a fifth shaft section from top to bottom in sequence, the clamping assembly is provided with a clamping disc and a clamping power source, the rotating assembly is provided with a bearing set and a driven gear, the positioning assembly is provided with a positioning tooth base, and the lifting assembly is provided with a piston; the positioning tooth holder is mounted on the first shaft section, the clamping disc is mounted on the positioning tooth holder, the second shaft section penetrates through the bearing group, the third shaft section penetrates through the lifting assembly, the driven gear is mounted on the fourth shaft section, and the clamping power source is mounted on the fifth shaft section;

The top of the first shaft section is longitudinally provided with a first mounting hole, and a fastener is suitable for longitudinally entering the first mounting hole and fixedly mounting the positioning tooth holder on the first shaft section;

the bearing group comprises a taper hole bearing, a ball bearing and a lining, wherein a tapered surface is arranged on the second shaft section in the circumferential direction, the tapered surface is attached in the taper hole bearing, the ball bearing is positioned at the top of the lifting assembly, and the lining is fixedly arranged between the taper hole bearing and the ball bearing;

the side wall of the third shaft section is provided with a first key groove, and the piston is fixedly arranged on the third shaft section through matching of a shaft key and the first key groove;

a second key groove is formed in the side wall of the fourth shaft section, and the driven gear is fixedly mounted on the fourth shaft section through matching of a shaft key and the second key groove;

and a second mounting hole is formed in the bottom of the fifth shaft section along the longitudinal direction, and a fastener is suitable for longitudinally entering the second mounting hole and fixedly mounting the clamping power source on the fifth shaft section.

Compared with the prior art, the method has the following beneficial effects: the rotary clamping device integrates clamping, rotating and positioning functions, and the rotary assembly, the clamping assembly and the positioning assembly are arranged around the transmission shaft, so that an additional transmission element is not needed, and the rotary clamping device has the advantages of compact structure, safety and reliability. Specifically, the clamping function means that a workpiece is clamped and fixed on the device, so that a machine tool cutter can conveniently process; the rotation function is to rotate a workpiece to enable different sides of the workpiece to face a machine tool cutter and process the workpiece, so that the processing stations are switched; the positioning function is that when a certain processing station is used, the transmission shaft and the clamping assembly are communicated with a workpiece to be positioned and fixed at a corresponding position, so that displacement, deflection or vibration is avoided, and the processing precision is ensured.

Drawings

FIG. 1 is a perspective view of a cross according to a preferred embodiment of the present application.

Fig. 2 is a perspective view of a preferred embodiment according to the present application.

Fig. 3 is a half sectional view of fig. 2 in accordance with a preferred embodiment of the present application.

FIG. 4 is a half sectional view of the positioning assembly shown unlocked in accordance with a preferred embodiment of the present application.

Fig. 5 is a perspective view of a propeller shaft according to a preferred embodiment of the present application.

Fig. 6 is a half sectional view of a drive shaft according to a preferred embodiment of the present application.

Fig. 7 is an exploded view of a positioning assembly according to a preferred embodiment of the present application.

FIG. 8 is a half sectional view of a positioning assembly according to a preferred embodiment of the present application.

FIG. 9 is a schematic illustration of an operating environment according to a preferred embodiment of the present application.

In the figure: 100. a rotating clamping device; 200. a frame; 300. a cutter; 10. a cross shaft; 10a, a substrate; 10b, a shaft body; 10c, a round hole; 1. a mounting seat; 2. a drive shaft; 2a, a pull rod channel; 21. a first shaft section; 22. a second shaft section; 23. a third shaft section; 24. a fourth shaft section; 25. a fifth shaft section; 211. a first mounting hole; 221. a conical surface; 231. a first keyway; 241. a second keyway; 251. a second mounting hole; 3. a clamping assembly; 31. a clamping plate; 32. a pull rod; 33. clamping a power source; 311. split clamping petals; 321. a tapered slider; 4. a swivel assembly; 41. a power base; 42. a rotary power source; 43. a driving gear; 44. a driven gear; 45. a bearing set; 451. a tapered bore bearing; 452. a ball bearing; 453. a bushing; 5. a positioning assembly; 51. fixing the gear ring; 52. positioning a tooth holder; 511. a convex tooth; 521. a tooth socket; 522. a tooth block; 523. mounting grooves; 6. a lifting assembly; 6a, an oil chamber; 61. a cylinder barrel; 62. an end cap; 63. a piston.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations and positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, the cross 10 includes a base 10a and shaft bodies 10b extending from the base 10a in the front-rear and left-right directions, respectively, and a circular hole 10c is formed through the base 10 a. In current process, need mill process to four axis bodies 10b, adopt anchor clamps to fix cross axle 10 usually, adopt four cutters to process four axis bodies 10b respectively again, perhaps adopt the rotatory mode of cutter to process different axis bodies 10b, above-mentioned processing mode ubiquitous equipment cost is high, problem that machining efficiency is low. Therefore, the electric driving main shaft structure is adopted in the original design of the applicant, a clamp is arranged at one end of the main shaft and used for clamping the cross shaft 10, and a motor is connected with the other end of the main shaft and used for driving the main shaft to rotate to switch different stations; the positioning is mainly completed through a positioning groove on a main shaft end rotary disc, when the rotary disc rotates to a required position, a motor stops, a positioning device on the side surface of the rotary disc works, and a hydraulic oil cylinder pushes a bolt to be inserted into the positioning groove of the rotary disc. However, because the motor rotation error is large, the stop position is different every time, the bolt is displaced in different degrees every time when being inserted, the positioning accuracy of the spindle is further influenced, and the accumulated error is larger as the rotation is more, and the repeated positioning accuracy is worse; in the working process of the main shaft, because the main shaft is subjected to cutting force to generate torque, the torque is transmitted to the main shaft, so that the main shaft generates displacement and deflection, errors are superposed on the machine tool to generate vibration, and the precision of the size of a produced product is seriously influenced.

Therefore, the applicant has made optimization and improvement on the basis of the above initial design (it should be noted that the above initial design is a non-preferred embodiment, but is also a complete technical solution, and has specific technical features, which should fall into the protection scope of the present application), specifically as follows:

as shown in fig. 2 to 9, the clamping device 100 according to a preferred embodiment of the present application mainly includes six parts:

a mounting seat 1, wherein the mounting seat 1 is suitable for being fixedly mounted on the machine frame 200.

A drive shaft 2, the drive shaft 2 being adapted to pass longitudinally through the mounting 1.

And the clamping component 3 is fixedly arranged at the top of the transmission shaft 2 and is suitable for clamping and fixing the cross shaft 10.

And the rotating assembly 4 is connected with the transmission shaft 2, and is suitable for driving the transmission shaft 2 to rotate and used for switching the processing stations of the cross shaft 10.

And the positioning assembly 5 is arranged between the mounting seat 1 and the transmission shaft 2, and is suitable for locking the rotation angle of the transmission shaft 2 and used for maintaining the processing station of the cross shaft 10.

The lifting assembly 6 is connected with the transmission shaft 2 and is suitable for driving the transmission shaft 2 to lift along the longitudinal direction, and further driving the positioning assembly 5 to switch between a locking state and an unlocking state; when the positioning assembly 5 is in the unlocking state, the rotating assembly 4 is suitable for driving the transmission shaft 2 to rotate.

It can be seen from the above structure that the rotary clamping device 100 of the present embodiment integrates the functions of clamping, rotating, lifting and positioning, and the rotary component 4, the clamping component 3, the positioning component 5 and the lifting component 6 are all disposed around the transmission shaft 2, without additional transmission elements, and has the advantages of compact structure, safety and reliability.

In addition, the rotary clamping device 100 of the present embodiment needs to be repositioned each time the station is switched by rotation, and at the same time, the positioning accuracy at one time is high, and no error is accumulated, and the repeated positioning accuracy is also high, thereby ensuring the machining accuracy of the cross shaft 10.

Moreover, the transmission shaft 2 of the present embodiment is slidably and rotatably disposed on the mounting base 1, and the mounting base 1 is firmly fixed on the frame 200 by the round nut on the peripheral side, so as to prevent the mounting base 1 from deforming under the action of torque; therefore, the mounting base 1 has reliable supporting and positioning functions on the transmission shaft 2, so that the transmission shaft 2 has a better anti-torsion effect, the possibility of displacement, deflection and vibration of the transmission shaft 2 is reduced, and the machining precision of the cross shaft 10 is further ensured.

As shown in fig. 3 and 4, the clamping assembly 3 includes a clamping disc 31, a pull rod 32 and a clamping power source 33, a pull rod channel 2a is longitudinally formed on the transmission shaft 2, the clamping disc 31 is adapted to be fixedly disposed on the top of the transmission shaft 2 (in this embodiment, the clamping disc 31 is not directly mounted on the transmission shaft 2), the clamping power source 33 is fixedly disposed on the bottom of the transmission shaft 2, a split clamping flap 311 is disposed on the top of the clamping disc 31, a tapered slider 321 adapted to the split clamping flap 311 is disposed on the top of the pull rod 32, and the pull rod 32 is adapted to pass through the pull rod channel 2a and connect with the clamping power source 33; the split clamping flap 311 is suitable for being inserted into the circular hole 10c of the cross shaft 10, and the clamping power source 33 is suitable for driving the pull rod 32 to lift along the longitudinal direction, so as to pull the conical pull head 321 to act on the split clamping flap 311 to expand or contract the split clamping flap for clamping or loosening the cross shaft 10. The clamping power source 33 is a cylinder in this embodiment.

It can be seen that the clamping assembly 3 of this embodiment is disposed at two ends of the transmission shaft 2 by using the pull rod channel 2a formed on the transmission shaft 2, and can rotate and lift along with the transmission shaft 2, so that the clamping assembly 3 has a more compact structure, and has a reliable operation mode and a clamping effect.

As shown in fig. 3 and fig. 4, the rotating assembly 4 includes a power base 41, a rotating power source 42, a driving gear 43, a driven gear 44 and a bearing set 45, the power base 41 is adapted to be fixedly disposed at the bottom of the transmission shaft 2 (in this embodiment, the power base 41 is not directly mounted on the transmission shaft 2), the rotating power source 42 is fixedly disposed on the power base 41, the driving gear 43 is concentrically and fixedly connected to an output shaft of the rotating power source 42, the driven gear 44 is concentrically and fixedly connected to the transmission shaft 2, the driving gear 43 is engaged with the driven gear 44, the bearing set 45 is fixedly disposed in the mounting base 1, and the transmission shaft 2 is adapted to pass through the bearing set 45 to rotate; the rotary power source 42 is adapted to drive the drive shaft 2 for rotation within the bearing set 45 by cooperation of the drive gear 43 and the driven gear 44. The rotary power source 42 is a motor in this embodiment.

The rotary component 4 of the embodiment adopts a gear transmission mode, and has the advantages of stable transmission and low noise; the bearing set 45 is arranged, so that the mounting base 1 has better supporting and positioning effects on the transmission shaft 2, and the stability and the accuracy of the transmission shaft 2 during rotation are ensured.

As shown in fig. 3 and 4, the positioning assembly 5 includes a fixed gear ring 51 and a positioning tooth holder 52, the fixed gear ring 51 is fixedly arranged on the mounting base 1, the positioning tooth holder 52 is fixedly arranged on the transmission shaft 2, and the lifting assembly 6 is adapted to drive the fixed gear ring 51 and the positioning tooth holder 52 to move closer to or away from each other through the transmission shaft 2; when the fixed gear ring 51 and the positioning gear seat 52 approach, the fixed gear ring and the positioning gear seat are engaged to limit relative rotation, and the positioning component 5 is in a locking state; when the fixed gear ring 51 and the positioning gear seat 52 are far away, the two are separated and can rotate relatively, and the positioning assembly 5 is in an unlocking state.

The positioning mode of gear ring meshing is adopted, and the positioning device has the advantages of high positioning precision, no displacement, safety and reliability.

In the embodiment, the fixed gear ring 51 is provided with a convex tooth 511 corresponding to a processing station of the cross shaft 10, and the positioning tooth holder 52 is provided with a tooth socket 521 matched with the convex tooth 511; when the fixed gear ring 51 and the positioning tooth holder 52 are close to each other, the convex teeth 511 are suitable for entering the tooth sockets 521 to realize locking, and when the fixed gear ring 51 and the positioning tooth holder 52 are far away from each other, the convex teeth 511 are suitable for being separated from the tooth sockets 521 to realize unlocking.

As shown in fig. 7 and 8, one key improvement is that a tooth block 522 is detachably arranged on the positioning tooth holder 52, and a tooth socket 521 is arranged on the tooth block 522. The specific installation mode is that, the locating tooth seat 52 is provided with a mounting groove 523 along the transverse direction, the tooth block 522 is suitable for passing in and out the mounting groove 523 along the transverse direction, and the fastener is suitable for longitudinally passing through the locating tooth seat 52 and fixing the tooth block 522 in the mounting groove 523. It is expected that the convex teeth 511 and the tooth sockets 521 need to be continuously rubbed and extruded, and are easy to wear and deform, especially the position of the tooth socket 521; therefore, the detachable tooth block 522 is arranged in the embodiment, so that the tooth block 522 can be replaced periodically, and the positioning accuracy is ensured; likewise, the fixed ring gear 51 may be replaced.

As another key improvement, the cross sections of the convex teeth 511 and the tooth sockets 521 present corresponding trapezoidal structures, so that even if the rotating assembly 4 has a certain rotation error, the convex teeth 511 can "slide into" the tooth sockets 521 through the trapezoidal structures, thereby ensuring the accuracy of each positioning of the positioning assembly 5; the cross sections of the tooth block 522 and the mounting groove 523 are of corresponding inverted trapezoidal structures, so that the tooth block 522 can be firmly fixed in the mounting groove 523, and the tooth block 522 cannot move longitudinally even if a fastener is loosened.

As an adaptation, the four convex teeth 511 and the four tooth sockets 521 are respectively and uniformly distributed along the circumferential direction, and the revolving assembly 4 and the positioning assembly 5 are cooperatively adapted to drive the transmission shaft 2 to rotate 90 ° at a time, that is, each rotation angle is an included angle of the shaft body 10b, so that the cutter 300 can process the shaft bodies 10b on different sides.

As shown in fig. 3 and 4, the lifting assembly 6 uses a cylinder as a lifting power source, the lifting assembly 6 includes a cylinder 61, an end cover 62 and a piston 63, the cylinder 61 is fixedly disposed in the mounting base 1, the end cover 62 is fixedly disposed on the cylinder 61, the piston 63 is fixedly disposed on the transmission shaft 2, the cylinder 61 and the end cover 62 define an oil chamber 6a, the piston 63 is adapted to be slidably disposed in the oil chamber 6a along the longitudinal direction, two ends of the transmission shaft 2 respectively seal and penetrate through the cylinder 61 and the end cover 62, and the change of the oil pressure in the oil chamber 6a is adapted to drive the transmission shaft 2 to lift along the longitudinal direction. It is worth mentioning that the power base 41 is directly mounted on the end cover 62.

Firstly, the lifting component 6 is arranged in the mounting base 1, so that no extra space is occupied, and the lifting component has the advantage of compact structure; in addition, the lifting assembly 6 is designed according to the arrangement structure of the transmission shaft 2, the transmission shaft 2 is used as a piston rod of the oil cylinder, the lifting function of the transmission shaft 2 is achieved, and the lifting assembly also has the advantages of few application parts, compact structure and reliability in operation.

The gyration subassembly 4 of this embodiment, centre gripping subassembly 3, locating component 5 and lifting unit 6 all set up around transmission shaft 2, based on this, concrete mounting structure is as shown in fig. 5 and fig. 6, transmission shaft 2 includes first shaft segment 21 from top to bottom in proper order, second shaft segment 22, third shaft segment 23, fourth shaft segment 24 and fifth shaft segment 25, location toothholder 52 is installed on first shaft segment 21, grip block 31 is installed on location toothholder 52, second shaft segment 22 passes bearing group 45, third shaft segment 23 passes lifting unit 6, driven gear 44 is installed on fourth shaft segment 24, centre gripping power supply 33 is installed on fifth shaft segment 25. Further specifically:

the top of the first shaft segment 21 is longitudinally provided with a first mounting hole 211, and the fastener is adapted to enter the first mounting hole 211 longitudinally and fixedly mount the positioning toothholder 52 on the first shaft segment 21.

Bearing set 45 includes taper hole bearing 451, ball bearing 452 and bush 453, and second axle section 22 circumference is provided with conical surface 221, and conical surface 221 fits in taper hole bearing 451, and ball bearing 452 is located the top of lifting unit 6, and bush 453 is fixed to be set up between taper hole bearing 451 and ball bearing 452. The bearing set 45 ensures the stability of the rotation and the lifting of the transmission shaft 2 by using the longitudinal space of the mounting base 1, and especially, the tapered hole bearing 451 is also a guide base besides bearing functions, so as to ensure that the transmission shaft 2 cannot be eccentric.

The first key slot 231 is formed in the side wall of the third shaft section 23, and the piston 63 is fixedly mounted on the third shaft section 23 by matching the shaft key with the first key slot 231.

The side wall of the fourth shaft section 24 is provided with a second key slot 241, and the driven gear 44 is fixedly mounted on the fourth shaft section 24 by matching the shaft key with the second key slot 241.

The bottom of the fifth shaft section 25 is provided with a second mounting hole 251 along the longitudinal direction, and the fastener is suitable for entering the second mounting hole 251 along the longitudinal direction and fixedly mounting the clamping power source 33 on the fifth shaft section 25.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (8)

1. A swivel clamp apparatus, comprising:

the mounting seat is suitable for being fixedly mounted on the rack;

a drive shaft adapted to pass longitudinally through the mount;

The clamping assembly is fixedly arranged at the top of the transmission shaft and is suitable for clamping and fixing a workpiece;

the rotating assembly is connected with the transmission shaft, is suitable for driving the transmission shaft to rotate and is used for switching the processing stations of the workpiece;

the positioning assembly is arranged between the mounting seat and the transmission shaft, is suitable for locking the rotation angle of the transmission shaft and is used for keeping a processing station of the workpiece;

the lifting assembly is connected with the transmission shaft and is suitable for driving the transmission shaft to lift along the longitudinal direction so as to drive the positioning assembly to switch between a locking state and an unlocking state; when the positioning assembly is in an unlocking state, the rotating assembly is suitable for driving the transmission shaft to rotate;

the clamping assembly comprises a clamping disc, a pull rod and a clamping power source, a pull rod channel is longitudinally formed in the transmission shaft, the clamping disc is suitable for being fixedly arranged at the top of the transmission shaft, the clamping power source is fixedly arranged at the bottom of the transmission shaft, a split clamping flap is arranged at the top of the clamping disc, a conical pull head matched with the split clamping flap is arranged at the top of the pull rod, and the pull rod is suitable for penetrating through the pull rod channel and is connected with the clamping power source; the split clamping flaps are suitable for being inserted into the workpiece, the clamping power source is suitable for driving the pull rod to lift along the longitudinal direction, and then the conical pull head is pulled to act on the split clamping flaps to enable the split clamping flaps to be unfolded or folded, so that the workpiece can be clamped or loosened.

2. A swing clamp apparatus as claimed in claim 1, wherein: the positioning assembly comprises a fixed gear ring and a positioning tooth holder, the fixed gear ring is fixedly arranged on the mounting seat, the positioning tooth holder is fixedly arranged on the transmission shaft, and the lifting assembly is suitable for driving the fixed gear ring and the positioning tooth holder to be close to or far away from each other through the transmission shaft; when the fixed gear ring and the positioning tooth holder approach to each other, the fixed gear ring and the positioning tooth holder are engaged and limited to rotate relatively, and the positioning assembly is in a locking state; when the fixed gear ring and the positioning tooth holder are far away, the fixed gear ring and the positioning tooth holder are tripped and can rotate relatively, and the positioning assembly is in an unlocking state.

3. A swing clamp apparatus as claimed in claim 2, wherein: convex teeth corresponding to the processing stations of the workpiece are arranged on the fixed gear ring, and tooth grooves matched with the convex teeth are formed in the positioning tooth holder; when the fixed gear ring and the positioning tooth holder are close to each other, the convex teeth are suitable for entering the tooth grooves to realize locking, and when the fixed gear ring and the positioning tooth holder are far away from each other, the convex teeth are suitable for being separated from the tooth grooves to realize unlocking.

4. A swivel clamp assembly according to claim 3, wherein: the positioning tooth holder is detachably provided with a tooth block, and the tooth socket is arranged on the tooth block.

5. A swing clamp apparatus as claimed in claim 4, wherein: the positioning tooth holder is transversely provided with a mounting groove, the tooth block is suitable for transversely entering and exiting the mounting groove, and the fastener is suitable for longitudinally penetrating through the positioning tooth holder and fixing the tooth block in the mounting groove;

the cross sections of the convex teeth and the tooth grooves are in corresponding trapezoid structures, and the cross sections of the tooth blocks and the mounting grooves are in corresponding inverted trapezoid structures;

the convex teeth and the tooth grooves are respectively provided with four convex teeth and evenly distributed along the circumferential direction, and the rotating assembly and the positioning assembly are matched to drive the transmission shaft to rotate 90 degrees at a time.

6. A swing clamp apparatus as claimed in claim 1, wherein: the rotary assembly comprises a power seat, a rotary power source, a driving gear, a driven gear and a bearing set, wherein the power seat is suitable for being fixedly arranged at the bottom of the transmission shaft, the rotary power source is fixedly arranged on the power seat, the driving gear is concentrically and fixedly connected with an output shaft of the rotary power source, the driven gear is concentrically and fixedly connected with the transmission shaft, the driving gear is meshed with the driven gear, the bearing set is fixedly arranged in the mounting seat, and the transmission shaft is suitable for penetrating through the bearing set to rotate; the rotary power source is suitable for driving the transmission shaft to rotate in the bearing set through the matching of the driving gear and the driven gear.

7. A swing clamp apparatus as claimed in claim 1, wherein: the lifting assembly uses the oil cylinder as a lifting power source, the lifting assembly comprises a cylinder barrel, an end cover and a piston, the cylinder barrel is fixedly arranged in the mounting seat, the end cover is fixedly arranged on the cylinder barrel, the piston is fixedly arranged on the transmission shaft, the cylinder barrel and the end cover define an oil cavity, the piston is suitable for being arranged in the oil cavity along longitudinal sliding, two ends of the transmission shaft respectively penetrate through the cylinder barrel and the end cover in a sealing mode, and oil pressure change in the oil cavity is suitable for driving the transmission shaft to lift along longitudinal direction.

8. A swing clamp apparatus as claimed in any one of claims 1 to 7, wherein: the transmission shaft sequentially comprises a first shaft section, a second shaft section, a third shaft section, a fourth shaft section and a fifth shaft section from top to bottom, the clamping assembly is provided with a clamping disc and a clamping power source, the rotary assembly is provided with a bearing group and a driven gear, the positioning assembly is provided with a positioning tooth base, and the lifting assembly is provided with a piston; the positioning tooth holder is mounted on the first shaft section, the clamping disc is mounted on the positioning tooth holder, the second shaft section penetrates through the bearing group, the third shaft section penetrates through the lifting assembly, the driven gear is mounted on the fourth shaft section, and the clamping power source is mounted on the fifth shaft section;

The top of the first shaft section is longitudinally provided with a first mounting hole, and a fastener is suitable for longitudinally entering the first mounting hole and fixedly mounting the positioning tooth holder on the first shaft section;

the bearing group comprises a taper hole bearing, a ball bearing and a bushing, wherein a conical surface is arranged on the second shaft section in the circumferential direction and is attached to the inside of the taper hole bearing, the ball bearing is positioned at the top of the lifting assembly, and the bushing is fixedly arranged between the taper hole bearing and the ball bearing;

a first key groove is formed in the side wall of the third shaft section, and the piston is fixedly mounted on the third shaft section through a shaft key matched with the first key groove;

a second key groove is formed in the side wall of the fourth shaft section, and the driven gear is fixedly mounted on the fourth shaft section through a shaft key matched with the second key groove;

and a second mounting hole is formed in the bottom of the fifth shaft section along the longitudinal direction, and a fastener is suitable for longitudinally entering the second mounting hole and fixedly mounting the clamping power source on the fifth shaft section.

Images