CN216884179U - Circular cutting device capable of being clamped and loosened quickly - Google Patents

Abstract

The utility model relates to a circular cutting device capable of quickly clamping and loosening, which is characterized by comprising an automatic chuck, a rotating frame, a tool rest and a push-type broach mechanism, wherein the automatic chuck is provided with a through clamping hole, the rotating frame can be rotatably sleeved on the automatic chuck, the rotating center line of the rotating frame is coaxial with the axial center line of the clamping hole, the push-type broach mechanism is arranged on the rotating frame, the tool rest can be linearly and slidably arranged on the end surface of the rotating frame, the tool rest can make reciprocating motion far away from the hole opening close to the clamping hole, and the tool rest is in driving connection with the push-type broach mechanism. The utility model has the advantages of simple structure, high cutting efficiency, good cutting quality, low cutting noise, high reliability, wide application, low maintenance cost and the like.

Description

Circular cutting device capable of being clamped and loosened quickly

Technical Field

The utility model relates to the technical field of cutting, in particular to a circular cutting device.

Background

Currently, when cutting some round pipes (such as water pipes, cable pipes, packaging round pipes and the like), most of the round pipes are cut by workers through sawteeth. The cutting mode is complex to operate, the cutting efficiency is low, the cutting surface is easy to be uneven, and the cutting quality is low. Although a mechanized circular cutting device is available, the existing circular cutting device has the problems of poor positioning precision, unstable cutting quality, low cutting efficiency and the like. Therefore, it is necessary to redesign the structure of the ring cutting device.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and the defects and provides the circular cutting device capable of being clamped and loosened quickly, and the circular cutting device has the advantages of simple structure, high cutting efficiency, good cutting quality, low cutting noise, high reliability, wide practicability, low maintenance cost and the like.

The technical scheme of the utility model is realized as follows:

the utility model provides a ring cutting device that can press from both sides tightly fast, loosen which characterized in that includes automatic chuck, swivel mount, knife rest, push-type broach mechanism, wherein sets up the clamp hole that runs through on the automatic chuck, the swivel mount can rotate ground suit on automatic chuck to the rotatory central line that makes the swivel mount is coaxial with the axial central line who presss from both sides the material hole, push-type broach mechanism sets up on the swivel mount, the knife rest can set up on the terminal surface of swivel mount with linear sliding, and makes the knife rest can do the reciprocating motion of keeping away from near clamp hole drill way, still makes knife rest and push-type broach mechanism be connected with the drive mutually.

Preferably, the automatic chuck comprises a driving motor and a four-jaw chuck, the material clamping hole penetrates through the four-jaw chuck, four jaws of the four-jaw chuck are uniformly arranged around the material clamping hole, and the four-jaw chuck is in driving connection with the driving motor.

Preferably, the inner surface of each clamping jaw is provided with an arc-shaped clamping piece, and the inner arc surface of each arc-shaped clamping piece faces to the axial center line of the material clamping hole.

Preferably, the swivel mount includes inner bearing, swivel sleeve, annular positioning disk, the inner bearing suit is to automatic chuck on, the swivel sleeve suit is on the inner bearing, the annular positioning disk sets up on the terminal surface of swivel sleeve, the knife rest sets up on the terminal surface of annular positioning disk, push-type broach mechanism sets up on the swivel sleeve.

Preferably, the rotating sleeve comprises a belt pulley and a positioning sleeve, the positioning sleeve is sleeved on the inner bearing, and the belt pulley and the annular positioning disc are respectively arranged on the end faces of the two ends of the positioning sleeve.

Preferably, a linear guide rail is arranged on the end face of the rotating frame, and the tool rest is arranged on the sliding end of the linear guide rail.

Preferably, the knife rest includes locating piece, regulating block, double-layered sword piece, first screw, second screw, the locating piece can set up on the terminal surface of swivel mount with linear sliding, waist shape hole has been seted up on the regulating block, the regulating block is arranged on the locating piece, the screw thread end of first screw passes behind the waist shape hole spiro union on the locating piece, double-layered sword piece is arranged on the regulating block, the screw thread end of second screw passes behind the double-layered sword piece spiro union on the regulating block.

Preferably, the push broach mechanism comprises a push broach blade, a push sleeve and an outer bearing, one end of the push blade is hinged to the side edge of the rotating frame, the inner surface of the push blade is pressed against the tool rest, the push sleeve is slidably sleeved on the rotating frame, the edge of an inner hole of the push sleeve is pressed against the outer surface of the push blade, and the outer bearing is sleeved on the push sleeve.

Preferably, the inner hole of the push sleeve is a bell mouth with a large outer part and a small inner part, and the bell mouth is pressed on the outer surface of the push blade.

Preferably, the end surface of the rotating frame is provided with a balancing weight, and the balancing weight and the tool rest are respectively positioned at two sides of the hole opening of the material clamping hole.

The utility model has the beneficial effects that: in the ring cutting device, an automatic chuck is adopted, and a penetrating material clamping hole is formed in the automatic chuck. Therefore, the pipe can be conveniently placed in the material clamping hole, the pipe can be conveniently and accurately clamped by the automatic chuck, the stability and the reliability of pipe clamping can be achieved through the automatic chuck, the pipe can be conveniently and stably and reliably fixed in the circular cutting device, and quick clamping and loosening can be achieved, so that the convenience of clamping and discharging is improved.

The rotary frame is adopted and can be rotatably sleeved on the automatic chuck. This allows for a circular rotation around the automatic chuck to enable a very accurate circular cutting process. By adopting the tool rest, the tool rest can be linearly and slidably arranged on the end surface of the rotating frame, and the tool rest can do reciprocating motion far away from the hole opening close to the material clamping hole. This facilitates gripping of the blade to enable the blade to reciprocate away from the orifice near the gripper aperture, which enables the blade to rotate around the pipe. In addition, due to the arrangement of the push broach mechanism, the blade can be pushed to be close to the pipe through the push broach mechanism, so that the pipe can be subjected to accurate and reliable circular cutting treatment, the cutting efficiency and the cutting quality of the pipe can be greatly improved, and the reliability of the circular cutting device is very high. And adopt such structure, can be in the ring cutting process, the noise of ring cutting that significantly reduces, this ring cutting device's suitability is very high. And the circular cutting device can be used for cutting various pipes, and the circular cutting device is wide in application.

Meanwhile, the integral structure of the circular cutting device is simpler, the circular cutting device is very convenient to manufacture, the maintenance convenience is very high, and the maintenance cost of the circular cutting device is very low.

Drawings

Fig. 1 is a schematic perspective view of a circular cutting device according to the present invention.

Fig. 2 is a second schematic perspective view of the ring cutting device of the present invention.

Fig. 3 is a schematic view of a split structure of the ring cutting device of the present invention.

FIG. 4 is a schematic view of a partial structure of the ring cutting device of the present invention.

Fig. 5 is a schematic diagram of a disassembled structure of the rotating frame of the present invention.

Fig. 6 is a schematic view of the tool holder of the present invention in a disassembled configuration.

Fig. 7 is a schematic perspective view of the push-type broach mechanism according to the present invention.

Fig. 8 is a schematic diagram of a disassembled structure of the push broach mechanism according to the present invention.

FIG. 9 is a second schematic view of a partial structure of the ring cutting device of the present invention.

Fig. 10 is an enlarged view of a portion a of fig. 9 according to the present invention.

Fig. 11 is a schematic sectional view of the push sleeve of the present invention.

Detailed Description

As shown in fig. 1 to 3, the circular cutting device capable of fast clamping and loosening according to the present invention includes an automatic chuck 1, a rotating frame 2, a tool rest 3, and a push-type cutter mechanism 4, wherein the automatic chuck 1 is provided with a through clamping hole 11, the rotating frame 2 is rotatably sleeved on the automatic chuck 1, and a rotation center line of the rotating frame 2 is coaxial with an axial center line of the clamping hole 11, the push-type cutter mechanism 4 is arranged on the rotating frame 2, the tool rest 3 is linearly slidably arranged on an end surface of the rotating frame 2, and the tool rest 3 is capable of reciprocating away from an orifice close to the clamping hole 11, and the tool rest 3 and the push-type cutter mechanism 4 are in driving connection.

In the ring cutting device of the utility model, an automatic chuck 1 is adopted, and a material clamping hole 11 which penetrates through the automatic chuck 1 is arranged on the automatic chuck 1. Therefore, the pipe can be conveniently placed in the material clamping hole 11, the automatic chuck 1 can be conveniently and accurately used for clamping the pipe, the stability and the reliability of pipe clamping can be achieved through the automatic chuck 1, the pipe can be conveniently and stably and reliably fixed in the circular cutting device, and quick clamping and loosening can be achieved, so that the convenience of clamping and discharging is improved.

By adopting the rotating frame 2, the rotating frame 2 can be rotatably sleeved on the automatic chuck 1. This allows a circumferential rotation around the automatic chuck 1 to enable a very accurate circular cutting process. By adopting the tool rest 3 and enabling the tool rest 3 to be linearly slidably arranged on the end surface of the rotating frame 2, the tool rest 3 can also make reciprocating motion far away from the hole opening close to the material clamping hole 11. This facilitates the gripping of the blade so that the blade can reciprocate away from the orifice near the gripper orifice 11, which allows the blade to rotate around the pipe. In addition, due to the arrangement of the push broach mechanism 4, the blade can be pushed to be close to the pipe through the push broach mechanism 4, so that the pipe can be subjected to accurate and reliable circular cutting treatment, the cutting efficiency and the cutting quality of the pipe can be greatly improved, and the reliability of the circular cutting device is very high. And adopt such structure, can be in the ring cutting process, the noise of ring cutting that significantly reduces, this ring cutting device's suitability is very high. And the circular cutting device can be used for cutting various pipes, and the circular cutting device is wide in application.

Meanwhile, the integral structure of the circular cutting device is simpler, the circular cutting device is very convenient to manufacture, the maintenance convenience is very high, and the maintenance cost of the circular cutting device is very low.

The circular cutting device can be used for circular cutting of plastic circular pipes. For example, circular cut PVC circular tube, circular cut transparent plastic circular tube, circular cut plastic circular tube for packaging some products. In the actual use process, can be used to circular cut electron cigarette packing pipe. The circular cutting device can cut various pipes and is very widely applicable.

As shown in fig. 3 and 4, the automatic chuck 1 includes a driving motor 12 and a four-jaw chuck 13, the material clamping hole 11 is formed through the four-jaw chuck 13, four jaws 131 of the four-jaw chuck 13 are uniformly arranged around the material clamping hole 11, and the four-jaw chuck 13 is in driving connection with the driving motor 12. The automatic chuck 1 is simple and reliable in structure, and can clamp and limit pipes reliably, so that convenience and reliability of pipe penetrating and clamping positioning are improved, and reliability of the circular cutting device is improved.

As shown in fig. 2 and 3, the driving motor 12 is a servo motor, a driving shaft 122 is connected to a power output shaft of the driving motor 12 through a coupling 121, and an outer end of the driving shaft 122 is inserted into an adjusting hole 123 of the four-jaw chuck 13. Therefore, the driving shaft 122 can be driven to rotate positively and negatively through the positive and negative rotation of the driving motor 12, and the four clamping jaws 131 can be contracted or expanded through the positive and negative rotation of the driving shaft 122, so that the clamping can be conveniently locked and loosened, and the circular cutting device can well meet the requirements of practical use.

As shown in fig. 9, arc-shaped clamping pieces 132 are respectively arranged on the inner surfaces of the clamping claws 131, and the inner arc surfaces of the arc-shaped clamping pieces 132 face the axial center line of the material clamping hole 11. The arc-shaped clamping pieces 132 can play a more reliable clamping role on the pipe, so that the clamping stability and reliability of the automatic chuck 1 are improved, and the reliability of the circular cutting device is further improved.

As shown in fig. 9 and 10, a T-shaped engaging groove 133 is formed on an inner surface of the claw 131, a pin hole 134 penetrating through the T-shaped engaging groove 133 is formed on a side wall of the claw 131, a T-shaped engaging head 135 is arranged on an outer arc surface of the arc-shaped clamping piece 132, the T-shaped engaging head 135 is engaged with the T-shaped engaging groove 133, and a positioning pin 136 is engaged with the pin hole 134 such that the positioning pin 136 penetrates through the T-shaped engaging head 135. This facilitates and stabilizes the mounting of the arc-shaped jaws 132 on the jaws 131, thereby contributing to further improvement in the reliability of the automatic chuck 1.

As shown in fig. 1, 3 and 4, the rotating frame 2 includes an inner bearing 21, a rotating sleeve 22, and an annular positioning disk 23, the inner bearing 21 is sleeved on the automatic chuck 1, the rotating sleeve 22 is sleeved on the inner bearing 21, the annular positioning disk 23 is disposed on an end surface of the rotating sleeve 22, the tool holder 3 is disposed on an end surface of the annular positioning disk 23, and the push mechanism 4 is disposed on the rotating sleeve 22. The structure of this swivel mount 2 is very simple reliable, and it can not only satisfy rotatory needs well, can also be convenient for knife rest 3 and push-type broach mechanism 4 can accurately be installed on swivel mount 2 to just can be convenient for constitute very reliable circular cutting device, and then help further improving this circular cutting device's reliability and suitability. The annular positioning disc 23 can well meet the positioning requirement, and is convenient for the penetration of the pipe, thereby being convenient for use.

As shown in fig. 4, the inner bearing 21 is fitted around the outer circumferential surface of the four-jaw chuck 13. Thus, the mounting and positioning requirements of the inner bearing 21 can be well met.

As shown in fig. 4 and 9, a limit ring groove 137 is formed on a side edge of the outer circumferential surface of the four-jaw chuck 13, the inner bearing 21 is sleeved on the limit ring groove 137, a plurality of limit stoppers 138 are arranged on the end surface of the four-jaw chuck 13, and each limit stopper 138 is pressed against the end surface of the inner ring of the inner bearing 21. This can confine the inner bearing 21 to the four-jaw chuck 13 in a sufficiently stable manner, which contributes to improving the stability and reliability of the mounting and positioning of the inner bearing 21, and further contributes to further improving the reliability of the ring cutting device.

As shown in fig. 4 and 9, each limit stopper 138 is fixed to the end surface of the four-jaw chuck 13 by a screw. Therefore, the limit stoppers 138 can be stably fixed on the four-jaw chuck 13, and the requirement for disassembling and maintaining the inner bearing 21 can be met, thereby improving the applicability of the ring cutting device.

As shown in fig. 4 and 5, the rotating sleeve 22 includes a pulley 221 and a positioning sleeve 222, the positioning sleeve 222 is sleeved on the inner bearing 21, and the pulley 221 and the annular positioning disk 23 are respectively disposed on two end faces of the positioning sleeve 222. The rotary sleeve 22 is simple and reliable in structure, and can well meet the requirements of installation and positioning and rotation, so that a very reliable circular cutting device can be formed. The pulley 221 is used to facilitate the power of rotation from the outside through the belt, so that the convenience and stability of the power of the rotary sleeve 22 can be improved. And can avoid causing the influence to the ring-cutting process like this, the suitability of this structure is very good.

As shown in fig. 4 and 5, in order to improve the stability and reliability of the mounting and positioning of the rotating frame 2, the inner hole of the positioning sleeve 222 may be a stepped hole 2221, and may be clamped to the outer ring of the inner bearing 21 together with the pulley 221 through the stepped hole 2221. This stably restrains the rotary sleeve 22 to the inner bearing 21, which contributes to further improvement in the reliability of the rotating frame 2.

As shown in fig. 4 and 5, the pulley 221 is fixed to the positioning sleeve 222 by a plurality of screws. This stably restrains the pulley 221 to the positioning sleeve 222, thereby obtaining a highly reliable rotary sleeve 22.

As shown in fig. 4 and 5, the annular positioning plate 23 is fixed on the end surface of the positioning sleeve 222 by a plurality of screws. This allows the annular positioning disk 23 to be stably retained on the positioning sleeve 222, thus allowing a very reliable rotating turret 2 to be constructed.

In the actual manufacturing process, the following structure can also be adopted: first, the positioning sleeve 222 is integrated with the annular positioning plate 23. Secondly, the positioning sleeve 222 and the annular positioning disk 23 are fixed together by welding. Both these constructions constitute a very reliable swivel 2.

As shown in fig. 1 and 3, a linear guide 24 is provided on an end surface of the rotary frame 2, and the tool holder 3 is provided on a sliding end of the linear guide 24. Through linear guide 24's setting, can play very good spacing guide effect to help improving the gliding accuracy and the stability of knife rest 3, and then help further improving this ring cutting device's reliability.

As shown in fig. 1 and 3, in an actual manufacturing process, two or more linear guides 24 may be used, and the tool holder 3 may be straddled on the sliding end of each linear guide 24. This further improves the accuracy and reliability of the sliding movement of the blade holder 3, which contributes to further improving the reliability of the ring cutting device.

As shown in fig. 3 to 5, a positioning groove 231 is formed on an outer end surface of the annular positioning plate 23, and the linear guide 24 is embedded in the positioning groove 231. This helps to improve the accuracy and stability of the mounting and positioning of the linear guide 24, and thus helps to further improve the reliability of the mounting and positioning of the linear guide 24.

As shown in fig. 3 and 4, the linear guide 24 is fixed to the positioning groove 231 by screws. Therefore, the stability and the reliability of the installation and the positioning of the linear guide rail 24 can be improved, the linear guide rail 24 can be conveniently detached and maintained, and the applicability of the circular cutting device can be further improved.

As shown in fig. 1, 3 and 6, the tool post 3 includes a positioning block 31, an adjusting block 32, a knife clamping block 33, a first screw 34 and a second screw 35, the positioning block 31 is linearly slidably disposed on the end surface of the rotating frame 2, a kidney-shaped hole 321 is disposed on the adjusting block 32, the adjusting block 32 is disposed on the positioning block 31, a threaded end of the first screw 34 passes through the kidney-shaped hole 321 and then is screwed to the positioning block 31, the knife clamping block 33 is disposed on the adjusting block 32, and a threaded end of the second screw 35 passes through the knife clamping block 33 and then is screwed to the adjusting block 32. The structure of the blade holder 3 is very simple and reliable, which not only meets the requirements for clamping the blade, but also meets the requirements for adjustment, thereby meeting more use requirements, which contributes to further improving the reliability of the circular cutting device. And the tool holder 3 is also very convenient to use, so that adjustment and maintenance can be conveniently carried out, which contributes to further improving the applicability of the ring cutting device.

As shown in fig. 6, in the actual manufacturing process, more than two slotted holes 321 may be formed in the adjusting block 32, and the adjusting block 32 may be fixed by a plurality of first screws 34. This contributes to improving the stability and reliability of the mounting and positioning of the adjustment block 32, and thus contributes to further improving the reliability of the tool holder 3.

As shown in fig. 3 and 6, in the actual manufacturing process, the clamping block 33 may be fixed by a plurality of second screws 35. Wherein, the blade 36 for circular cutting is clamped between the cutter clamping block 33 and the adjusting block 32, and the second screws 35 are respectively positioned at two sides of the blade 36. This further improves the reliability and stability of the clamping action of the blade holder 33, and contributes to further improving the reliability and stability of the mounting and positioning of the blade 36, and further contributes to further improving the reliability of the circular cutting apparatus.

The circular cutting device can complete chipless circular cutting action of a circular tube and has the characteristics of high speed, strong stability, low noise and the like.

As shown in fig. 3 and 6, the positioning block 31 is fixed to the sliding end of the linear guide 24 by a plurality of screws. Therefore, the sliding requirement of the positioning block 31 can be met, and the positioning block 31 can be stably installed on the linear guide rail 24, so that the reliability of the circular cutting device is further improved.

As shown in fig. 1 and 3, the push-type broach mechanism 4 includes a push-type broach blade 41, a push sleeve 42, and an outer bearing 43, wherein one end of the push-type broach blade 41 is hinged on the side edge of the rotary frame 2, and the inner surface of the push-type broach blade 41 is pressed against the blade holder 3, the push sleeve 42 is slidably fitted on the rotary frame 2, and the inner aperture edge of the push sleeve 42 is pressed against the outer surface of the push-type broach blade 41, and the outer bearing 43 is fitted on the push sleeve 42. The structure of the push broach mechanism 4 is very simple and reliable, the push broach mechanism can push the push blade 41 to swing through the sliding of the push sleeve 42, and the swing of the push blade 41 can push the tool rest 3 to move towards the material clamping hole 11, so that the process of feeding can be conveniently completed, and the cutting quality and stability can be improved. Through the setting of outer bearing 43, can conveniently realize rotating with outside actuating mechanism and be connected to can guarantee that swivel mount 2 can accomplish the rotation process very steadily, and then can guarantee that the cutting process can accomplish very smoothly, this reliability that helps further to improve this ring cutting device.

In the actual manufacturing process, the driving mechanism for driving the pushing sleeve 42 adopts a linear driving mechanism (not shown in the figure), and the outer bearing 43 is embedded on the movable end of the linear driving mechanism. Therefore, the pushing sleeve 42 can slide on the rotating frame 2 through the driving of the linear driving mechanism, and the pushing sleeve 42 can be stably limited on the rotating frame 2, so that the accurate and stable cutting process can be conveniently completed.

In the actual manufacturing process, the linear driving mechanism can adopt the following two structures, namely, the first structure comprises a driving cylinder and a movable ring, the movable ring is arranged on the movable end of the driving cylinder, and the outer bearing 43 is embedded in the inner hole of the movable ring. Secondly, linear driving mechanism includes driving motor, lead screw, linear guide, loose ring, lead screw one end meets with driving motor's power output shaft, linear guide sets up by the side of swivel mount 2, the loose ring slides and sets up on linear guide to make the loose ring spiro union on the lead screw, outer bearing 43 inlays the dress in the hole of loose ring. Therefore, the push sleeve 42 can be accurately and conveniently driven to slide, and the requirement of circular cutting of the pipe can be well met.

As shown in fig. 1 and 3, the push sleeve 42 is axially positioned by the linear drive mechanism, and the push sleeve 42 is radially positioned by the rotating sleeve 22. This allows the push sleeve 42 to be stably and accurately retained on the locating sleeve 222, thereby providing a very reliable ring cutting device.

As shown in fig. 1 and 3, the pushing blade 41 presses against the outer end surface of the positioning block 31. When the pushing sleeve 42 moves toward the tool rest 3, the pushing blade 41 can be pushed to swing, and then the positioning block 31 can be pushed by the pushing blade 41, so that the tool rest 3 can finish the feeding. After the pushing sleeve 42 is retracted to the initial position, the rotating frame 2 still keeps rotating, and at this time, the tool rest 3 naturally exits from the cutting position under the action of centrifugal force, so that the tool retraction can be completed very conveniently. The ring cutting device has high reliability.

As shown in fig. 7 and 8, a limiting convex ring 421 is disposed on an outer circumferential surface of one end of the push sleeve 42, an end surface of one end of the inner ring of the outer bearing 43 is pressed against an end surface of an inner end of the limiting convex ring 421, at least one limiting barrier 422 is disposed on the outer circumferential surface of the push sleeve 42, and the limiting barrier 422 is pressed against an end surface of the other end of the inner ring of the outer bearing 43. This stably and reliably restrains the outer bearing 43 to the push sleeve 42, which contributes to further improvement in reliability of the push mechanism 4.

As shown in fig. 7 and 8, the limiting barrier 422 is in an arc structure, an inner arc surface of the limiting barrier 422 is attached to an outer circumferential surface of the push sleeve 42, and two ends of the limiting barrier 422 are fixed to the push sleeve 42 by screws. The limiting barrier 422 not only can play a very reliable limiting role, but also can well meet the dismounting requirement, so that the outer bearing 43 can be conveniently replaced and maintained, and the convenience of maintaining the push broach mechanism 4 is improved.

As shown in fig. 7 and 8, in the actual manufacturing process, the following structure may be adopted: the number of the limit barrier strips 422 is three, and the three limit barrier strips 422 are uniformly arranged around the push sleeve 42. This can provide a more reliable and stable limit for the outer bearing 43, which contributes to further improving the reliability of the push broach mechanism 4.

As shown in fig. 3 to 5, two hinge lugs 232 are disposed side by side on an outer side edge of the annular positioning plate 23, one end of the push blade 41 is disposed between the two hinge lugs 232, a hinge shaft 411 is disposed at one end of the push blade 41, and two ends of the hinge shaft 411 are disposed on the two hinge lugs 232 respectively. Thus, the push blade 41 can be conveniently and reliably mounted in place, so that the push blade mechanism 4 can be very accurately and stably mounted on the rotating frame 2, and a very reliable circular cutting device can be obtained.

As shown in fig. 1 to 5, one end of the inner circumferential surface of the pulley 221 is provided with a positioning protrusion 2211, the pulley 221 is arranged around a part of the positioning sleeve 222 and a part of the pushing sleeve 42, the positioning protrusion 2211 is attached to the end surface of the positioning sleeve 222, and the positioning protrusion 2211 is fixed to the end surface of the positioning sleeve 222 by a plurality of screws. Therefore, the circular cutting device has a very compact structure, the space occupation of the circular cutting device can be reduced, and the application range of the circular cutting device is further improved.

As shown in fig. 3 to 5, a positioning ring groove 2212 is formed on an inner end surface of the positioning protruding ring 2211, and one end of the positioning sleeve 222 is embedded in the positioning ring groove 2212. This contributes to further improving the reliability and stability of the assembly of the pulley 221 and the positioning sleeve 222, thereby contributing to further improving the reliability of the ring cutting device.

As shown in fig. 1, 3 and 11, the inner hole of the push sleeve 42 is a flared mouth 423 with a large outer part and a small inner part, and the flared mouth 423 presses against the outer surface of the push blade 41. By adopting the bell mouth 423, not only can the push blade 41 be conveniently and stably contacted, but also the push blade 41 can be accurately and stably guided, and abrasion can be reduced, which contributes to further improving the reliability and applicability of the circular cutting device.

As shown in fig. 1, 3 and 4, a counterweight 25 is disposed on an end surface of the rotating frame 2, and the counterweight 25 and the tool rest 3 are respectively located at two sides of the opening of the material clamping hole 11. Can guarantee more steady of the rotation of swivel mount 2 like this to help improving the stability and the accuracy of knife rest 3 pivoted, and then help further improving the quality of circular cutting, this helps further improving the reliability of this circular cutting device.

As shown in fig. 1, 3 and 4, the weight 25 is fixed to the annular positioning plate 23 by a plurality of screws. Through a plurality of screw fixation balancing weights 25, can not only fix balancing weights 25 on annular positioning disk 23 very steadily, can also satisfy the demand of dismantling balancing weights 25 to can be convenient for dispose balancing weights 25 according to the blade weight of difference, and then help further improving this circular cutting device's reliability and suitability.

The circular cutting device has the advantages of being simple in overall structure, wide in practicability, small in noise, high in speed, smooth in cutting edge, high in accuracy, simple in debugging, low in maintenance cost, high in efficiency and the like.

The above embodiments are preferred embodiments of the present invention, and all similar structures and equivalent changes made by the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides a can tight, the ring-cutting device who loosens fast which characterized in that: including automatic chuck (1), swivel mount (2), knife rest (3), push-type broach mechanism (4), wherein set up the clamp hole (11) that run through on automatic chuck (1), swivel mount (2) can rotate ground suit on automatic chuck (1) to the axial centerline that makes the swivel mount (2) and clamp hole (11) is coaxial, push-type broach mechanism (4) set up on swivel mount (2), knife rest (3) can set up on the terminal surface of swivel mount (2) with sharp slip, and make knife rest (3) can do and keep away from the reciprocating motion who is close to clamp hole (11) drill way, still make knife rest (3) and push-type broach mechanism (4) drive mutually and be connected.

2. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: the automatic chuck (1) comprises a driving motor (12) and a four-jaw chuck (13), the material clamping hole (11) is formed by penetrating through the four-jaw chuck (13), four clamping jaws (131) of the four-jaw chuck (13) are uniformly arranged around the material clamping hole (11), and the four-jaw chuck (13) is in driving connection with the driving motor (12).

3. The quick-clamping, quick-release circular cutting apparatus according to claim 2, further comprising: arc-shaped clamping pieces (132) are respectively arranged on the inner surfaces of the clamping jaws (131), and the inner arc surfaces of the arc-shaped clamping pieces (132) face to the axial center line of the material clamping hole (11).

4. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: the rotary frame (2) comprises an inner bearing (21), a rotary sleeve (22) and an annular positioning disc (23), the inner bearing (21) is sleeved on the automatic chuck (1), the rotary sleeve (22) is sleeved on the inner bearing (21), the annular positioning disc (23) is arranged on the end face of the rotary sleeve (22), the tool rest (3) is arranged on the end face of the annular positioning disc (23), and the push broach mechanism (4) is arranged on the rotary sleeve (22).

5. The quick-clamping, quick-release circular cutting apparatus according to claim 4, wherein: the rotary sleeve (22) comprises a belt pulley (221) and a positioning sleeve (222), the positioning sleeve (222) is sleeved on the inner bearing (21), and the belt pulley (221) and the annular positioning disc (23) are respectively arranged on end faces of two ends of the positioning sleeve (222).

6. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: the end face of the rotating frame (2) is provided with a linear guide rail (24), and the tool rest (3) is arranged at the sliding end of the linear guide rail (24).

7. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: knife rest (3) are including locating piece (31), regulating block (32), double-layered sword piece (33), first screw (34), second screw (35), locating piece (31) can set up on the terminal surface of swivel mount (2) with linear sliding, waist shape hole (321) have been seted up on regulating block (32), regulating block (32) are arranged on locating piece (31), the screw thread end of first screw (34) passes behind waist shape hole (321) spiro union on locating piece (31), double-layered sword piece (33) are arranged on regulating block (32), the screw thread end of second screw (35) passes behind double-layered sword piece (33) spiro union on regulating block (32).

8. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: the push broach mechanism (4) comprises a push broach blade (41), a push sleeve (42) and an outer bearing (43), one end of the push broach blade (41) is hinged to the side edge of the rotating frame (2), the inner surface of the push broach blade (41) is pushed against the knife rest (3), the push sleeve (42) is sleeved on the rotating frame (2) in a sliding mode, the edge of an inner hole opening of the push sleeve (42) is pushed against the outer surface of the push blade (41), and the outer bearing (43) is sleeved on the push sleeve (42).

9. The quick-clamping, quick-release circular cutting apparatus according to claim 8, further comprising: the inner hole opening of the push sleeve (42) is a flared opening (423) with a large outer part and a small inner part, and the flared opening (423) is pressed against the outer surface of the push blade (41).

10. The quick-clamping, quick-release circular cutting apparatus according to claim 1, further comprising: the end face of the rotating frame (2) is provided with a balancing weight (25), and the balancing weight (25) and the tool rest (3) are respectively positioned at two sides of the hole opening of the material clamping hole (11).

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