CN111890103A

CN111890103A - Numerical control machine tool with material guide channel

Info

Publication number: CN111890103A
Application number: CN202010731918.9A
Authority: CN
Inventors: 杨玉双
Original assignee: Taizhou Yiding Cnc Machine Tool Co ltd
Current assignee: Taizhou Yiding Cnc Machine Tool Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2020-11-06
Anticipated expiration: 2040-07-27
Also published as: CN111890103B

Abstract

The application relates to a numerical control machine tool with a material guide channel, which relates to the field of machine tools and comprises a rack and a chuck for clamping workpieces, wherein the chuck is driven by a driving source to rotate, a dragging plate is arranged on the rack in a sliding manner, a cutter is arranged on the dragging plate, the chuck is provided with a plurality of clamping blocks for clamping the workpieces along the circumferential direction, the moving direction of the clamping blocks is along the radial direction of the chuck, the center of the chuck is provided with a mounting hole, an elastic piece is arranged in the mounting hole, the elastic direction of the elastic piece is along the axial direction of the chuck, and the elastic piece can pop up the workpieces on the chuck; the dragging plate is also provided with a material guide channel, and the dragging plate can enable the material guide channel to be opposite to the chuck through sliding. The numerical control machine tool can automatically eject the workpiece out of the chuck, the workpiece enters the receiving disc for storage after being guided by the material guide channel, manual blanking is not needed, and the manual labor amount is reduced; through setting up feeding mechanism, can realize automatic feeding to the work piece.

Description

Numerical control machine tool with material guide channel

Technical Field

The application relates to the field of machine tools, in particular to a numerical control machine tool with a material guide channel.

Background

The lathe is the general name of machining equipment, and the digit control machine tool has higher automation level, can practice thrift artifical amount of labour to raise the efficiency.

Chinese utility model patent with publication number CN204262767U discloses a lathe, including planker, spin chuck and the footstock of setting opposite spin chuck, still including pressing from both sides the mandrel of establishing between spin chuck and footstock, the cover is equipped with a plurality of cutters on the mandrel, is equipped with anchor clamps on the planker.

Some numerically controlled machines are similar in construction to the machine, with the workpiece clamped to the chuck for machining. After the workpiece is machined, the workpiece needs to be manually held, and then the workpiece can be taken down by loosening the chuck, so that the defect of large manual labor amount exists.

Disclosure of Invention

In order to reduce artifical amount of labour, this application provides a digit control machine tool with guide way.

The application provides a digit control machine tool with guide says adopts following technical scheme:

a numerical control machine tool with a material guide channel comprises a rack and a chuck for clamping a workpiece, wherein the chuck is driven by a driving source to rotate, a dragging plate is arranged on the rack in a sliding manner, a cutter is arranged on the dragging plate, a plurality of clamping blocks for clamping the workpiece are arranged on the chuck along the circumferential direction, the moving direction of the clamping blocks is along the radial direction of the chuck, a mounting hole is formed in the center of the chuck, an elastic piece is arranged in the mounting hole, the elastic direction of the elastic piece is along the axial direction of the chuck, and the elastic piece can pop up the workpiece on the chuck; the dragging plate is also provided with a material guide channel, and the dragging plate can enable the material guide channel to be opposite to the chuck through sliding.

By adopting the technical scheme, when the clamping block is in a state of loosening the workpiece, the feeding mechanism acts to input a workpiece into the mounting hole, the workpiece pushes the discharging push block to move so as to compress the elastic part, then the clamping block moves to clamp the workpiece, and then the elastic part is still in a compressed state. The system controls the chuck to rotate, the clamping block drives the workpiece to rotate, the dragging plate is controlled to move to a position where the cutter contacts the workpiece, and the cutter processes the workpiece. After the workpiece is machined, the system controls the carriage to move to a position where the material guide channel is opposite to the chuck, then the control block moves to release the workpiece, at the moment that the workpiece is released by the clamping block, the elasticity of the elastic piece acts on the workpiece through the discharging push block to eject the workpiece out of the chuck, the workpiece flies out at a certain initial speed and enters the material receiving disc to be stored after being guided by the material guide channel.

In conclusion, through this digit control machine tool, the back is accomplished in the work piece processing, along with the chuck unclamps the work piece, and the work piece can pop out voluntarily to accomplish automatic unloading through the guide way, then the manual work need not to hand the work piece and carries out the unloading, has reduced artificial amount of labour.

Preferably, the chuck further comprises a feeding mechanism, the feeding mechanism comprises a first air cylinder and a storage seat driven by the first air cylinder to slide, the storage seat is provided with a storage trough, and the storage trough can be enabled to be opposite to the center of the chuck through sliding of the storage seat; and the material storage seat is provided with a second air cylinder and a feeding push block driven by the second air cylinder to slide, and the feeding push block can push the workpiece to the chuck through sliding.

By adopting the technical scheme, when a workpiece is placed in the storage tank, the storage seat can enable the storage tank to be opposite to the center of the chuck through sliding through the extension and retraction of the first air cylinder; through the stretching of the second air cylinder, the feeding push block can push the workpiece to the chuck through sliding.

Preferably, the feeding mechanism further comprises a feeding channel obliquely arranged, the lower end of the feeding channel is communicated with the storage tank, and the size of the cross section of the storage tank can be used for placing a single workpiece.

Through adopting above-mentioned technical scheme, a plurality of work pieces can be placed in succession in the material loading way, and the work piece leans on gravity automatic downstream, can realize like this that single artifical material loading back need not repeated material loading in the short time.

Preferably, the lower end of the feeding channel is abutted against the outer side wall of the storage seat, and the outer side wall of the storage seat is provided with a feeding hole; when the feed inlet is just opposite to the lower end of the feeding channel, workpieces can enter the storage tank through the feed inlet, and the distance between the feed inlet and the inner bottom wall of the storage tank is set to be only used for allowing a single workpiece to enter.

By adopting the technical scheme, in the process of circularly moving the material storage seat, when the feeding hole is not just opposite to the feeding channel, the material storage seat blocks the workpiece at the tail end of the feeding channel to slide downwards through the side wall, and when the feeding hole is just opposite to the tail end of the feeding channel and the cavity is formed in the material storage tank, the single workpiece at the tail end of the feeding channel can automatically enter the material storage tank.

Preferably, the frame is provided with a receiving disc, the receiving disc is positioned on one side of the carriage, which is far away from the chuck, and the receiving disc is opposite to the chuck.

By adopting the technical scheme, the workpiece ejected from the chuck can be guided by the material guide channel and finally stopped to be stored at the material receiving disc.

Preferably, the carriage is provided with an air nozzle for spraying compressed air, the air nozzle is positioned between the cutter and the material guide channel, and the carriage can enable the air nozzle to be opposite to the workpiece on the chuck when moving.

By adopting the technical scheme, the air nozzle is used for spraying compressed air to the workpiece so as to blow off cutting fluid and metal chips on the surface of the workpiece. When the carriage slides, the cutter is just opposite to the chuck, and the material guide channel is just opposite to the chuck, the air nozzle can blow air to the workpiece just through the chuck.

Preferably, a butting block and a discharging push block are arranged in the mounting hole, two ends of the elastic piece are respectively butted with the butting block and the discharging push block, the butting block is located on one side of the elastic piece, which is far away from the planker, and the discharging push block is located on one side of the elastic piece, which is far towards the planker.

Through adopting above-mentioned technical scheme, the butt piece is used for being connected the elasticity that provides the support for the elastic component with the chuck, and ejection of compact ejector pad is used for contacting with the work piece, through the both ends of butt piece, ejection of compact ejector pad butt elastic component, and the atress of elastic component is comparatively steady.

Preferably, a guide rod is fixed on the rack, the length direction of the guide rod is along the axial direction of the chuck, the guide rod penetrates through the abutting block and is in sliding connection with the abutting block, and the guide rod and the abutting block are limited to rotate relatively by arranging a key groove structure; the chuck is coaxial to be provided with interior screw thread section, the butt joint piece passes through lateral wall and interior screw thread section threaded connection, order about the butt joint piece when interior screw thread section rotates and remove to ejection of compact ejector pad direction, the butt joint piece can break away from interior screw thread section.

Through adopting above-mentioned technical scheme, the cutter carries out the in-process of processing to the work piece, and at chuck pivoted in-process, the internal thread section also produces and rotates, because the guide arm has restricted the butt piece and has rotated, then through the threaded connection effect, the butt piece removes to the direction of ejection of compact ejector pad, and after the butt piece breaks away from the internal thread section completely, the butt piece can not continue to remove, and the elastic component is further compressed this moment, and the elastic component holds great elastic potential energy. By the arrangement, the elasticity of the elastic piece for ejecting the workpiece can be further improved, and the workpiece can have a sufficient ejection distance.

Preferably, the fixture block is fixed with sleeve blocks, the internal thread sections are respectively arranged on the wall surfaces of the sleeve blocks, when the fixture block clamps the workpiece, all the sleeve blocks are combined along the circumferential direction to form a sleeve, the inner wall of the sleeve is a complete internal thread section, and when the sleeve blocks are separated, the abutting block can move along the guide rod in the direction away from the discharging push block.

By adopting the technical scheme, the clamping block moves to loosen the workpiece after the workpiece is machined, and the elastic force of the elastic piece ejects the workpiece out of the chuck at the moment when the clamping block loosens the workpiece. Along with the fixture block continues to keep away from each other, the sleeve piecemeal is kept away from each other to internal thread section and butt piece complete separation, and butt piece can remove to the other end of guide arm this moment. When next feeding, the workpiece pushes the discharging push block to move in the direction deep into the mounting hole, and the discharging push block pushes the elastic piece and the abutting block to move, so that the abutting block moves back to the position between the sleeve blocks. And after the clamping block moves to clamp the workpiece, the sleeve is combined into a complete sleeve in a blocking and recombining mode, the internal thread section is in threaded connection with the outer wall of the abutting block again, and the next processing is carried out. The reset of the abutting block can be automatically completed by the arrangement, and in the process that the workpiece is installed in the installation hole, the elastic force of the elastic piece acting on the workpiece is small, so that the workpiece can conveniently enter the installation hole.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the numerical control machine tool can automatically eject the workpiece out of the chuck, the workpiece enters the receiving disc for storage after being guided by the material guide channel, manual blanking is not needed, and the manual labor amount is reduced;

2. by arranging the feeding mechanism, the workpiece can be automatically fed;

3. through setting up the air nozzle, can realize the cleanness after the work piece processing automatically.

Drawings

Fig. 1 is a perspective view of the embodiment.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a sectional view B-B of fig. 2.

Fig. 4 is a cross-sectional view of a chuck of an embodiment.

Fig. 5 is a perspective view of the fixture block and the sleeve block of the embodiment, mainly highlighting the structure of the internal thread section.

Description of reference numerals: 9. a workpiece; 1. a frame; 2. a chuck; 3. a carriage; 31. a cutter; 4. a feeding mechanism; 11. a take-up pan; 21. a clamping block; 22. mounting holes; 41. a feeding channel; 42. a first cylinder; 43. a storage base; 431. a feed inlet; 432. a storage tank; 44. a second air cylinder; 45. feeding a pushing block; 32. a gas showerhead; 33. a material guide channel; 51. a butting block; 52. an elastic member; 53. discharging a pushing block; 12. a guide bar; 121. a keyway structure; 23. partitioning the sleeve; 231. an internal thread segment.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses digit control machine tool with guide. Referring to fig. 1 and 2, a numerical control machine tool with a material guide channel comprises a frame 1, a chuck 2 for clamping a workpiece 9, and a carriage 3 slidably arranged on the frame 1, wherein a cutter 31 is fixed on the carriage 3; the frame 1 is also provided with a feeding mechanism 4 and a receiving tray 11 for placing the processed workpiece 9.

The chuck 2 is driven by a servo motor to rotate, the chuck 2 is provided with a plurality of clamping blocks 21 used for clamping the workpiece 9 along the circumferential direction, the clamping blocks 21 are connected with the chuck 2 in a sliding mode, the sliding direction of the clamping blocks 21 is along the radial direction of the chuck 2, the center of the chuck 2 is provided with a mounting hole 22, and the mounting hole 22 is used for inserting the end portion of the workpiece 9. The latch 21 is commonly called a claw, and the movement of the latch 21 along the radial direction of the chuck 2 is driven by hydraulic pressure or air pressure, which is prior art and will not be described herein.

Referring to fig. 2 and 3, the feeding mechanism 4 includes a feeding passage 41, a first air cylinder 42, and a magazine 43 slidably driven by the first air cylinder 42, wherein the magazine 43 is located right above the central axis of the chuck 2. The feeding channel 41 is fixed on the frame 1, the feeding channel 41 is obliquely arranged, the upper end of the feeding channel 41 is used for the workpieces 9 to enter, the lower end of the feeding channel 41 abuts against the storage seat 43, and the workpieces 9 move to the lower end of the feeding channel 41 by the self gravity. The sliding direction of the stock seat 43 is along the vertical direction, and the side wall of the stock seat 43 facing the feeding channel 41 is a vertical surface, and a feeding hole 431 is arranged on the surface. A storage tank 432 for placing the workpieces 9 is arranged in the storage seat 43 and close to the bottom, the storage tank 432 is communicated with the feed port 431, the size of the feed port 431 can be just used for the single workpiece 9 to pass through, and the cross section size of the storage tank 432 can be just used for the single workpiece 9 to be placed.

When the feed opening 431 is opposite to the tail end of the feeding channel 41, the workpieces 9 can slide into the storage tank 432 through the feed opening 431, and the distance between the feed opening 431 and the inner bottom wall of the storage tank 432 is set to be only used for the single workpiece 9 to enter. This can be achieved: in the process that the material storage seat 43 circularly ascends and descends along the vertical direction, when the feeding hole 431 is not opposite to the feeding channel 41, the material storage seat 43 blocks the workpiece 9 at the tail end of the feeding channel 41 from sliding downwards through the side wall, and when the feeding hole 431 is opposite to the tail end of the feeding channel 41 and the material storage groove 432 is a cavity, the single workpiece 9 at the tail end of the feeding channel 41 automatically enters the material storage groove 432. When the first air cylinder 42 drives the stock seat 43 to slide, the stock seat 43 can make the stock groove 432 opposite to the center of the chuck 2 through sliding. The material storage seat 43 is provided with a second air cylinder 44 and a feeding push block 45 driven by the second air cylinder 44 to slide, the feeding push block 45 is positioned in the material storage groove 432, and the feeding push block 45 can push the workpiece 9 in the material storage groove 432 to the chuck 2 through sliding.

Referring to fig. 1 and 2, the carriage 3 is driven by a motor screw mechanism (not shown in the figure) to slide, two sets of the motor screw mechanisms are provided, so that the carriage 3 can move along X, Y in two directions (i.e. horizontal direction), and the displacement of the carriage 3 is controlled by the system.

The tool 31, the air nozzle 32 and the material guide channel 33 are fixed on the carriage 3, the air nozzle 32 is communicated with compressed air, and the air nozzle 32 is used for spraying the compressed air to the workpiece 9 so as to blow off cutting fluid and metal chips on the surface of the workpiece 9. The cutter 31, the air nozzle 32 and the material guide channel 33 are arranged along the radial direction of the chuck 2, and the air nozzle 32 is positioned between the cutter 31 and the material guide channel 33. The carriage 3 can make the cutter 31 or the air nozzle 32 or the material guide channel 33 opposite to the chuck 2 through sliding. When the carriage 3 slides and is switched from the process that the cutter 31 is over against the chuck 2 to the process that the guide channel 33 is over against the chuck 2, the air nozzle 32 can just blow air to the workpiece 9 through the chuck 2.

The receiving tray 11 is positioned on one side of the carriage 3 departing from the chuck 2. When the material guide channel 33 is opposite to the chuck 2 through the end part, the length direction of the material guide channel 33 extends along the axial direction of the chuck 2, and the workpiece 9 ejected from the chuck 2 can be guided by the material guide channel 33 and finally stopped to be stored at the material receiving tray 11.

Referring to fig. 4 and 5, the abutting block 51, the elastic piece 52 and the discharging push block 53 are arranged in the mounting hole 22, the elastic piece 52 is a spring, two ends of the spring abut against the abutting block 51 and the discharging push block 53 respectively, the elastic direction of the elastic piece 52 is along the axial direction of the chuck 2, the discharging push block 53 is closer to the end surface of the chuck 2, and the discharging push block 53 is used for contacting with the workpiece 9. The abutting block 51 is connected with the chuck 2 to provide support for the elastic force of the elastic member 52, and the elastic member 52 can eject the workpiece 9 on the chuck 2.

Frame 1 is fixed with guide arm 12, and the axial of chuck 2 is followed to the length direction of guide arm 12, and guide arm 12 is located the central point of mounting hole 22 and puts, and guide arm 12 passes butt piece 51 and with butt piece 51 sliding connection, through setting up keyway structure 121 restriction relative rotation between guide arm 12, butt piece 51. The fixture block 21 is fixed with the sleeve sub-block 23, the fixture block 21 of this embodiment has three, and then the sleeve sub-block 23 also has three, and the sleeve sub-block 23 is located the position that corresponds butt joint piece 51, and the wall surface of sleeve sub-block 23 towards chuck 2 axis is equipped with internal thread section 231, and every sleeve sub-block 23 only has the internal thread of one third circumferential length.

When the fixture block 21 clamps the workpiece 9, all the sleeve segments 23 are just combined in the circumferential direction to form a sleeve, the inner wall of the sleeve is a complete internal thread section 231, and the abutting block 51 is in threaded connection with the internal thread section 231 through the outer side wall. When the chuck 2 rotates, the fixture block 21 drives the internal thread section 231 to rotate, when the internal thread section 231 rotates, the abutting block 51 is driven to move towards the discharging push block 53 through the thread connection effect, and the abutting block 51 can move towards the discharging push block 53 to be separated from the internal thread section 231. When the sleeve segments 23 are separated, the abutment block 51 can move along the guide rod 12 in a direction away from the discharging push block 53.

The implementation principle of the numerical control machine tool with the material guide channel 33 in the embodiment of the application is as follows: when the fixture block 21 is in a state of loosening the workpiece 9, the feeding mechanism 4 acts to input one workpiece 9 into the mounting hole 22, the workpiece 9 pushes the discharging push block 53 to move and compress the elastic element 52, and then the fixture block 21 is controlled to move and clamp the workpiece 9, so that the elastic element 52 is still in a compressed state.

When the system controls the chuck 2 to rotate, the fixture block 21 drives the workpiece 9 to rotate, the carriage 3 is controlled to move to a position where the cutter 31 contacts the workpiece 9, and the cutter 31 processes the workpiece 9. In the process of the rotation of the chuck 2, the internal thread section 231 also rotates, and because the guide rod 12 limits the rotation of the abutting block 51, the abutting block 51 moves towards the discharging push block 53 under the effect of threaded connection, and after the abutting block 51 is completely separated from the internal thread section 231, the abutting block 51 cannot move continuously, at this time, the elastic piece 52 is further compressed, and the elastic piece 52 stores large elastic potential energy.

After the workpiece 9 is machined, the system controls the carriage 3 to move to a position where the guide channel 33 is opposite to the chuck 2, and in the process, the air nozzle 32 passes through the workpiece 9 and cleans the surface of the workpiece 9 through air injection. Then the fixture block 21 is controlled to move to loosen the workpiece 9, at the moment when the fixture block 21 loosens the workpiece 9, the elastic force of the elastic element 52 acts on the workpiece 9 through the discharging pushing block 53 to eject the workpiece 9 out of the chuck 2, and the workpiece 9 flies out at a certain initial speed, enters the receiving tray 11 to be stored after being guided by the material guide channel 33.

As the engagement blocks 21 continue to move away from each other, the sleeve segments 23 move away from each other until the internal thread segments 231 are completely separated from the abutment blocks 51, at which point the abutment blocks 51 may move toward the other end of the guide rod 12. When the next feeding is performed, the workpiece pushes the discharging pushing block 53 to move in the direction deep into the mounting hole 22, and the discharging pushing block 53 pushes the elastic piece 52 and the abutting block 51 to move, so that the abutting block 51 moves back to the position between the sleeve sub-blocks 23. After the fixture block 21 moves to clamp the workpiece 9, the sleeve segments 23 are recombined into a complete sleeve, and the internal thread section 231 is in threaded connection with the outer wall of the abutting block 51 again for the next processing.

In conclusion, with the numerical control machine tool, after the workpiece 9 is machined, the workpiece 9 can be automatically ejected out along with the loosening of the workpiece 9 by the chuck 2, and automatic blanking is completed through the material guide channel 33, so that the workpiece 9 does not need to be manually held for blanking, and the labor amount of manual labor is reduced; meanwhile, the numerical control machine tool can also automatically feed the workpiece 9. The numerical control machine tool is suitable for processing small workpieces 9 capable of bearing impact.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a digit control machine tool with guide channel, includes frame (1), chuck (2) that are used for centre gripping work piece (9), chuck (2) are rotated by the drive source drive, it is provided with planker (3) to slide on frame (1), be equipped with cutter (31), its characterized in that on planker (3): the clamping chuck (2) is provided with a plurality of clamping blocks (21) used for clamping a workpiece (9) along the circumferential direction, the moving direction of the clamping blocks (21) is along the radial direction of the clamping chuck (2), the center of the clamping chuck (2) is provided with a mounting hole (22), an elastic piece (52) is arranged in the mounting hole (22), the elastic direction of the elastic piece (52) is along the axial direction of the clamping chuck (2), and the elastic piece (52) can pop up the workpiece (9) on the clamping chuck (2); the carriage (3) is also provided with a material guide channel (33), and the carriage (3) can enable the material guide channel (33) to be opposite to the chuck (2) through sliding.

2. The numerical control machine tool with the guide channel according to claim 1, characterized in that: the feeding mechanism (4) comprises a first air cylinder (42) and a storage seat (43) driven by the first air cylinder (42) to slide, the storage seat (43) is provided with a storage trough (432), and the storage trough (432) can be enabled to be opposite to the center of the chuck (2) through sliding of the storage seat (43); the feeding device is characterized in that a second cylinder (44) and a feeding push block (45) driven by the second cylinder (44) to slide are arranged on the material storage seat (43), and the feeding push block (45) can push a workpiece (9) to the chuck (2) through sliding.

3. The numerical control machine tool with the guide channel as claimed in claim 2, wherein: the feeding mechanism (4) further comprises a feeding channel (41) which is obliquely arranged, the lower end of the feeding channel (41) is communicated with the storage tank (432), and the cross section of the storage tank (432) is just suitable for placing a single workpiece (9).

4. The numerical control machine tool with the guide channel according to claim 3, characterized in that: the lower end of the feeding channel (41) is abutted against the outer side wall of the storage seat (43), and the outer side wall of the storage seat (43) is provided with a feeding hole (431); when the feed opening (431) is over against the lower end of the feeding channel (41), the workpieces (9) can enter the storage tank (432) through the feed opening (431), and the distance between the feed opening (431) and the inner bottom wall of the storage tank (432) is set to be only used for the single workpiece (9) to enter.

5. The numerical control machine tool with the guide channel according to claim 1, characterized in that: the welding plate (11) is arranged on the rack (1), the welding plate (11) is located on one side, away from the chuck (2), of the carriage (3), and the welding plate (11) is opposite to the chuck (2).

6. The numerical control machine tool with the guide channel according to claim 1, characterized in that: the tool is characterized in that the carriage (3) is provided with an air nozzle (32) for spraying compressed air, the air nozzle (32) is positioned between the cutter (31) and the material guide channel (33), and the carriage (3) can enable the air nozzle (32) to be over against a workpiece (9) on the chuck (2) when moving.

7. The numerical control machine tool with the guide channel according to claim 1, characterized in that: the mounting hole (22) is internally provided with a butt joint block (51) and a discharge push block (53), two ends of the elastic piece (52) are respectively butted against the butt joint block (51) and the discharge push block (53), the butt joint block (51) is positioned on one side of the elastic piece (52) departing from the carriage (3), and the discharge push block (53) is positioned on one side of the elastic piece (52) facing the carriage (3).

8. The numerical control machine tool with the guide channel according to claim 7, characterized in that: a guide rod (12) is fixed on the rack (1), the length direction of the guide rod (12) is along the axial direction of the chuck (2), the guide rod (12) penetrates through the abutting block (51) and is in sliding connection with the abutting block (51), and the guide rod (12) and the abutting block (51) are limited to rotate relatively by a key groove structure (121); chuck (2) coaxial be provided with internal thread section (231), butt joint piece (51) are through lateral wall and internal thread section (231) threaded connection, order about butt joint piece (51) when internal thread section (231) rotate and remove to ejection of compact ejector pad (53) direction, butt joint piece (51) can break away from internal thread section (231).

9. The numerical control machine tool with the guide channel according to claim 8, characterized in that: the fixture block (21) is fixed with sleeve sub-blocks (23), the internal thread sections (231) are respectively arranged on the wall surfaces of the sleeve sub-blocks (23), when the fixture block (21) clamps a workpiece (9), all the sleeve sub-blocks (23) are combined along the circumferential direction to form a sleeve, the inner wall of the sleeve is a complete internal thread section (231), and when the sleeve sub-blocks (23) are separated, the abutting block (51) can move along the guide rod (12) in the direction away from the discharging push block (53).