Pipe thread machining numerical control machine tool

Abstract

The invention discloses a pipe thread machining numerical control machine tool, and relates to the technical field of pipe machining, the pipe thread machining numerical control machine tool comprises a machine tool body, one side of the machine tool body is fixedly provided with a linear module, the linear module is in threaded connection with a first sliding table, and the top of the first sliding table is provided with a multi-tool-bit assembly; a plurality of inserting holes are formed in the cutterhead, so that a plurality of tool bits can be mounted, the required tool bits can be mounted on the cutterhead at one time according to corresponding specifications and size standards during pipe thread machining, the tool bits do not need to be frequently disassembled and assembled, and time and labor are saved; a push plate is driven by a clamping jaw to be matched with an arc-shaped plate, pressing type switches are sequentially popped out in the process that a sliding rod slides out of a fixing cylinder, the corresponding number of pressing type switches are popped out according to the diameter of a pipe, a cutting tool corresponding to the diameter of the pipe is rotated to be perpendicular to the pipe, and the self-adaption effect of a tool bit is achieved; and then the corresponding tool bits are manually switched to the cutter head, so that the switching efficiency of the tool bits is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, and in particular to a CNC machine tool for pipe thread processing. Background Art

[0002] In the manufacturing of industrial machinery or industrial instruments, connecting pipes are needed to connect different components. When connecting pipes, pipe threads are required to ensure the sealing of the connections.

[0003] When workers process pipe threads for pipes, they need to select appropriate cutter heads according to the pipe diameter and the processing standard of the thread, and install the cutter heads on the cutter disc of the cutting machine. Then, the cutting machine is used to drive the pipe to rotate and cooperate with the cutter head to process the pipe threads. Since the pipes have different diameters and different size standards, there are a large number of cutter heads for processing pipe threads. When processing different pipe threads, workers need to constantly replace cutter heads with corresponding specifications or corresponding thread size standards. Under the premise that different pipes need to be manually installed on CNC machine tools, installing the cutter heads will affect the efficiency of pipe thread processing, and the cutter heads are usually installed on the cutter disc with bolts. Removing and installing the cutter heads will also consume a certain amount of time, further affecting the efficiency of pipe thread processing and not conducive to the economic benefits of pipe processing.

[0004] In order to solve the above problems, the inventor proposed a CNC machine tool for pipe thread processing. Summary of the invention

[0005] In order to solve the above technical problems, a CNC machine tool for pipe thread processing is provided.

[0006] To achieve the above objectives, the present invention can be implemented by the following technical solutions:

[0007] The present invention provides a CNC machine tool for pipe thread processing, comprising: a bed, a linear module is fixedly installed on one side of the bed, a slide table 1 is threadedly connected to the linear module, and a multi-tool head assembly is arranged on the top of the slide table 1;

[0008] The cam is provided with a plurality of sliding grooves 1 equidistantly in an annular manner, and the sliding grooves 1 and 1 are respectively formed into a group and a plurality of sliding grooves 2 equidistantly in an annular manner, and the sliding grooves 2 are formed into a group, and the sliding grooves 2 in each group are formed into a group, and the sliding grooves 2 in one group are arranged on the side of the two sliding grooves 1 away from the insertion hole, a sliding plate is slidably connected in the sliding groove 2, a block 1 is fixedly connected to the side of the sliding plate close to the insertion hole, a block 2 is symmetrically fixedly connected to the end of the pin close to the insertion hole, and a spring 1 is arranged in the sliding groove 2.

[0009] Preferably, the heights of the first and second clamping blocks are the same as the first sliding slot, and the sliding plate and the second sliding slot form a limiting fit.

[0010] Preferably, the inclined surface of the first card block faces the outside of the insertion hole, and the inclined surface of the second card block faces the same direction as that of the first card block.

[0011] Preferably, a quantitative rotating assembly is provided at the bottom of the knife disc, and the quantitative rotating assembly includes a turntable fixedly connected to the side wall of the rotating shaft, a fixing pin 1 is fixedly connected to the top of the turntable, a fixing plate is fixedly connected to the top of the turntable, a fixing pin 2 is fixedly connected to the top of the fixed plate, a motor 1 is fixedly installed on the top of the slide 2, a wheel disc is fixedly connected to the output shaft of the motor 1, a shifting groove is provided on the wheel disc, and a shifting rod is fixedly connected to the top of the wheel disc.

[0012] Preferably, there are no less than eight fixing pins 1, which are equidistantly arranged in a ring on the turntable, and there are no less than eight fixing pins 2, which are equidistantly arranged in a ring on the fixed disk.

[0013] Preferably, the width of the shifting groove is the same as the diameter of the first fixing pin, and the shifting rod and the second fixing pin form a shifting fit.

[0014] The top of the gear train is equipped with a plurality of gears, and the gears are connected with the gear train by a plurality of gears, and the gears are connected with the gear train at two ends respectively.

[0015] Preferably, there are no less than eight push switches, the eight push switches are equidistantly arranged, and the eight push switches form an extrusion fit with the sliding rod.

[0016] Preferably, the top of the bed is slidably connected with a tailstock.

[0017] Preferably, a plurality of chip removal grooves are equidistantly provided on the top of the bed, and the bottom ends of the plurality of chip removal grooves lead to a side of the bed away from the linear module.

[0018] As described above, the characteristics and advantages of a pipe thread processing CNC machine tool in the present invention are:

[0019] By arranging multiple sockets on the cutter disc, the pin at one end of the cutting tool is aligned with the socket and inserted, so that the inclined surfaces of the second clamping block and the first clamping block cooperate to push the sliding plate until the pin contacts the inner wall of the socket and cannot be pushed further, and the cutting tool is installed, so that the cutting tool can be quickly installed, and multiple cutter heads can be installed at one time according to the corresponding specifications and size standards of the pipe thread processing, without the need to frequently disassemble and install the cutter heads, saving time and labor;

[0020] The claw drives the push plate to cooperate with the arc plate. When the claw slides into the inside of the chuck, several push switches pop out in sequence when the sliding rod slides out of the fixed cylinder. The smaller the diameter of the pipe, the more push switches pop out. According to the diameter of the pipe, a corresponding number of push switches pop out, and according to the number of popped-up push switches, the motor drives the wheel to rotate a corresponding number of circles, so that the cutting tool corresponding to the pipe diameter is rotated to be perpendicular to the pipe, so as to achieve the effect of self-adaptation of the cutter head. There is no need for workers to manually switch the corresponding cutter head to the cutter disc after checking the cutting specifications, so as to improve the efficiency of cutter head switching.

[0021] Through the cooperation of the pull groove and the pull rod, the sliding rod slides out of the fixed cylinder so that the push switches pop out one by one. Each time a push switch pops out, the motor 1 drives the wheel on the output shaft to rotate one circle, and the fixed plate and the rotating plate are driven to rotate 22.5 degrees under the action of the pull pin 2. The fixed pin 1 cooperates with the limit of the pull groove to make the rotating plate rotate 22.5 degrees again. At this time, the pull rod has not yet contacted the fixed pin 2, and the rotating plate rotates 45 degrees, so that the slide table 2 drives the cutter disc to rotate 45 degrees, so as to achieve the effect of switching different cutting knives to be perpendicular to the pipe.

[0022] Through the cooperation of block one and block two, when the cutting knife needs maintenance and replacement, the worker pinches the cutting knife and pulls the cutting knife toward the outside of the cutter disc. While pulling the cutting knife outward, block two repeatedly squeezes block one until the pin slides out of the socket, thereby realizing the quick disassembly of the cutting knife. It is convenient for the worker to quickly remove the cutting knife and perform operations such as sharpening or changing the knife, thereby improving the efficiency of daily maintenance and the efficiency of replacing multiple cutting knives of corresponding specifications after switching to pipes of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure shown in the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the chip removal groove structure shown in the present invention;

[0025] Figure 3 The present invention shows Figure 1 Enlarged view of point A in the middle;

[0026] Figure 4 It is a cutaway perspective schematic diagram of the internal structure of the cutter disc shown in the present invention;

[0027] Figure 5 The present invention shows Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 It is a cross-sectional perspective schematic diagram of the internal structure of the jack and the sliding slot shown in the present invention;

[0029] Figure 7 It is a three-dimensional schematic diagram of the overall structure of the quantitative rotating assembly shown in the present invention;

[0030] Figure 8 The present invention shows Figure 1 Enlarged view of point C in the middle;

[0031] Fig. 9 It is a three-dimensional schematic diagram of the fixing ring structure shown in the present invention;

[0032] Fig.10 It is a cross-sectional perspective schematic diagram of the internal structure of the fixing cylinder shown in the present invention.

[0033] The reference numerals in the drawings of the present invention are: 1, bed; 2, linear module; 3, slide 1; 7, tailstock; 8, chip removal groove;

[0034] Multi-tool head assembly: 401, slide table 2; 402, rotating shaft; 403, tool disc; 404, socket; 405, latch; 406, cutting tool; 407, sliding slot 1; 408, sliding slot 2; 409, sliding plate; 410, clamping block 1; 411, clamping block 2; 412, spring 1;

[0035] Quantitative rotating assembly: 501, turntable; 502, fixed pin 1; 503, fixed disk; 504, fixed pin 2; 505, motor 1; 506, wheel; 507, shifting slot; 508, shifting rod;

[0036] Sensing components: 601, fixed box; 602, chuck; 603, pulley one; 604, motor two; 605, pulley two; 606, claw; 607, push plate; 608, fixed ring; 609, sliding rod; 610, arc plate; 611, spring two; 612, fixed cylinder; 613, push switch. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] See 1~ Fig.10 As shown, an embodiment of the present invention is provided, and a pipe thread processing CNC machine tool provided will be described in detail below:

[0039] A CNC machine tool for pipe thread processing, such as Figure 1 to Figure 6 As shown, it includes: a bed 1, a linear module 2 is fixedly installed on one side of the bed 1, a slide 3 is threadedly connected to the linear module 2, and a multi-tool head assembly is arranged on the top of the slide 3;

[0040] The multi-tool head assembly includes a slide 2 401 slidably connected to the top of the slide 1 3, the top of the slide 2 401 is rotatably connected to a rotating shaft 402, the top of the rotating shaft 402 is fixedly connected to a cutter disc 403, a plug hole 404 is provided on the cutter disc 403, and the plug holes 404 are arranged at least eight, and the eight plug holes 404 are arranged in an annular manner at equal intervals on the side of the cutter disc 403, a plug pin 405 is inserted into the plug hole 404, and a cutting knife 406 is fixedly connected to the end of the plug pin 405 away from the plug hole 404, Figure 6 and Figure 5 As shown, the cutter disc 403 is provided with a plurality of sliding grooves 407 equidistantly in an annular shape, two of the sliding grooves 407 form a group, each group of sliding grooves 407 is symmetrically arranged on both sides of the insertion hole 404, and the sliding grooves 407 are connected to the insertion hole 404. The cutter disc 403 is provided with a plurality of sliding grooves 408 equidistantly in an annular shape, two of the sliding grooves 408 form a group, each group of sliding grooves 408 is arranged on both sides of the insertion hole 404, and the sliding grooves 408 are located on the side of the sliding grooves 407 away from the insertion hole 404, and the two are connected to each other, and the sliding grooves 408 are larger than the size of the sliding grooves 407, and the sliding grooves 408 are connected to the sliding grooves 408. A sliding plate 409 is connected, and a card block 1 410 is fixedly connected to one side of the sliding plate 409 close to the insertion hole 404, and a card block 2 411 is symmetrically fixedly connected to one end of the latch 405 close to the insertion hole 404, and a spring 1 412 is arranged in the second sliding groove 408, and the two sides of the spring 1 412 are respectively fixedly connected to the sliding plate 409 and the second sliding groove 408, and the height of the card block 1 410 and the card block 2 411 is the same as that of the sliding groove 1 407, and the sliding plate 409 forms a limiting fit with the sliding groove 2 408, and the inclined surface of the card block 1 410 faces the outside of the insertion hole 404, and the inclined surface of the card block 2 411 faces the same direction as that of the card block 1 410;

[0041] Further, such as Figure 3 , Figure 7 As shown, a quantitative rotating assembly is provided at the bottom of the knife disc 403, and the quantitative rotating assembly includes a rotating disc 501 fixedly connected to the side wall of the rotating shaft 402, and the rotating disc 501 is located at the bottom of the knife disc 403, and a fixing pin 1 502 is fixedly connected to the top of the rotating disc 501, and a fixing disc 503 is fixedly connected to the top of the rotating disc 501, and a fixing pin 2 504 is fixedly connected to the top of the fixing disc 503, and a motor 1 505 is fixedly installed on the top of the slide 2 401, and a fixing pin 506 is fixed on the output shaft of the motor 1 505. A wheel disc 506 is connected, a shifting slot 507 is provided on the wheel disc 506, a shifting rod 508 is fixedly connected to the top of the wheel disc 506, no less than eight fixing pins 502 are provided, and the eight fixing pins 502 are arranged in a ring and equidistantly on the turntable 501, no less than eight fixing pins 504 are provided, and the eight fixing pins 504 are arranged in a ring and equidistantly on the fixed disc 503, the width of the shifting slot 507 is the same as the diameter of the fixing pin 1 502, and the shifting rod 508 and the fixing pin 504 form a shifting fit.

[0042] Further, such as Figure 1 , Figure 2 , Figure 8 to Figure 10As shown, a sensing component is provided on one side of the top of the bed 1, and the sensing component includes a fixed box 601 fixedly connected to one side of the bed 1, and a chuck 602 is rotatably connected to the fixed box 601 on one side close to the bed 1, and a through hole aligned with the middle of the chuck 602 is opened on the fixed box 601, and a pulley 1 603 is fixedly connected to the outer arc surface of the chuck 602, and a motor 2 604 is fixedly installed on the top of the fixed box 601, and a pulley 2 605 is fixedly connected to the output shaft of the motor 2 604, and a belt is sleeved on the pulley 1 603 and the pulley 2 605, and the two are in transmission cooperation, and a plurality of claws 606 are annularly equidistantly slidably connected to the chuck 602, and an adjusting bolt for controlling the movement of the claw 606 is provided on the chuck 602, and the threaded disk in the chuck 602 is driven to rotate by the adjusting bolt, and then the threaded disk cooperates with the teeth on the claw 606 to drive the plurality of claws 606 to slide synchronously in the sliding groove of the chuck 602, which is a prior art and is not repeated here. As described above, a push plate 607 is fixedly connected to one side of the plurality of claws 606 away from the chuck 602, a fixing ring 608 is fixedly connected to the fixing box 601, sliding rods 609 are slidably connected to both sides of the fixing ring 608, an arc plate 610 is fixedly connected to one end of the sliding rod 609 close to the chuck 602, a spring 2 611 is arranged between the two arc plates 610 and the fixing ring 608, both ends of the spring 2 611 are fixedly connected to the arc plate 610 and the fixing ring 608, respectively, two fixing cylinders 612 are fixedly connected to the fixing box 601, the two fixing cylinders 612 are symmetrically arranged on both sides of the fixing ring 608, one end of the two sliding rods 609 away from the fixing ring 608 is respectively inserted into the two fixing cylinders 612, and push switches 613 are respectively arranged in the two fixing cylinders 612, and no less than eight push switches 613 are arranged, and the eight push switches 613 are equidistantly arranged, and the eight push switches 613 form an extrusion fit with the sliding rod 609.

[0043] Further, such as Figure 1 , Figure 2 As shown, the top of the bed 1 is slidably connected to a tailstock 7, which is used to support one end of the pipe to increase stability. A plurality of chip grooves 8 are equidistantly provided on the top of the bed 1, and the bottom ends of the plurality of chip grooves 8 lead to the side of the bed 1 away from the linear module 2. The metal chips cut off by the cutting tool 406 can be discharged to the side of the bed 1 through the chip grooves 8 to avoid the accumulation of metal chips.

[0044] In combination with the above embodiments, the entire working process and working principle of the above embodiments are as follows:

[0045] The initial state is:

[0046] The pins 405 fixedly connected on eight cutting knives 406 of different specifications are respectively inserted into the sockets 404, the spring 1 412 is in an extended state, the sliding plate 409 is located in the sliding groove 2 408 on the side close to the socket 404, the clamping block 2 411 is in conflict with the clamping block 1 410 close to it, the motor 1 505 and the motor 2 604 are not energized, the claw 606 is located in the groove of the chuck 602 on the side close to the fixed ring 608, the push plate 607 is in conflict with the arc plate 610, the spring 2 611 is in an extruded state, the end of the sliding rod 609 close to the fixed cylinder 612 is in conflict with the inner wall of the fixed cylinder 612, and all the push switches 613 are in an extruded state.

[0047] The working status is:

[0048] Installation pipe:

[0049] After inserting the pipe from the center of the chuck 602 into the fixed box 601, the worker uses a T-type wrench to turn the adjusting bolt on the chuck 602, so that the claw 606 slides toward the middle of the chuck 602, thereby gradually approaching the pipe, and with the cooperation of multiple claws 606, the pipe is clamped in the middle of the fixed box 601 and the chuck 602. Then the worker rotates the handle on the tail stock 7 to move it toward the fixed box 601, so that the tail stock 7 is against one end of the pipe, thereby realizing the installation of the pipe.

[0050] Adaptation:

[0051] When the claw 606 slides toward the center of the chuck 602, the push plate 607 on one side of the chuck 602 is driven by the claw 606 to move toward the center of the chuck 602. In this process, the distance that the push plate 607 squeezes the arc plate 610 gradually decreases, so that the spring 2 611 stretches and continuously pushes the arc plate 610 toward the push plate 607, so that the inner arc surface of the arc plate 610 continues to contact the outer arc surface of the push plate 607. When the arc plate 610 gradually approaches the chuck 602, the sliding rod Driven by the arc plate 610, 609 gradually slides out of the fixed tube 612, so that several push-type switches 613 pop out one after another in the process of the sliding rod 609 sliding out of the fixed tube 612, and then after the claw 606 presses the tube and stops sliding, the push plate 607, the arc plate 610 and the sliding rod 609 stop synchronously. The smaller the diameter of the tube, the more push-type switches 613 pop out, so that the corresponding number of push-type switches 613 pop out according to the diameter of the tube, achieving an adaptive effect.

[0052] Cutting head self-adaptation:

[0053] When the sliding rod 609 slides out of the fixed cylinder 612 and the push-type switches 613 pop out one by one, each time a push-type switch 613 pops out, the controller controls the motor 1 505 to drive the wheel disc 506 on the output shaft to rotate one circle, so that the wheel disc 506 drives the lever 508 to rotate one circle. In this process, the lever 508 first contacts with the fixed pin 2 504 driven by the wheel disc 506, and then drives the fixed disc 503 and the turntable 501 to rotate 22.5 degrees under the action of tossing the fixed pin 2 504. Then, the lever 508 rotates in the direction away from the fixed pin 2 504 driven by the wheel disc 506 and no longer contacts with the fixed pin 2 504. The wheel disc 506 continues to rotate, and then the lever groove 507 first contacts with the fixed pin 1 502. Under the limit cooperation between the fixed pin 1 502 and the lever groove 507 , the wheel 506 continues to drive the turntable 501 to rotate until the groove 507 is driven by the wheel 506 to gradually rotate away from the fixed pin 1 502 and disconnect them from each other, so that the turntable 501 rotates 22.5 degrees again. At this time, the lever 508 has not yet contacted the fixed pin 2 504, and the turntable 501 rotates forty-five degrees, so that the slide 2 401 drives the cutter disc 403 to rotate forty-five degrees, thereby achieving the effect of switching different cutting knives 406 to be perpendicular to the pipe, and according to the number of pop-up push switches 613, the motor 1 505 drives the wheel 506 to rotate the corresponding number of circles, so as to rotate the cutting knife 406 corresponding to the pipe diameter to be perpendicular to the pipe, so as to achieve the effect of self-adaptation of the cutter head, and there is no need for workers to manually switch the corresponding cutter head to the cutter disc 403 after comparing the cutting specifications, which saves time and effort.

[0054] Rotary thread machining:

[0055] When the pipe is installed and the corresponding cutting tool 406 is perpendicular to the pipe, the motor 2 604 is started, and the motor 2 604 drives the pulley 2 605 to rotate. The pulley 2 605 rotates through the belt drive pulley 1 603, thereby driving the chuck 602 to rotate, and then driving the pipe fixed in the middle of the chuck 602 to rotate, and then under the cooperation of the linear module 2 and the slide 1 3, the cutting tool 406 on the top of the slide 1 3 is controlled to translate and feed, so that the chuck 602 rotates with the pipe and cooperates with the cutting tool 406 on the top of the slide 1 3 to process the pipe thread, and in the process of the chuck 602 rotating to drive the pulley 1 603 and the push plate 607 to rotate, since there are multiple push plates 607, the push plate 607 always has a resistance effect on the arc plate 610 when rotating, so it does not affect the sliding of the sliding rod 609, thereby ensuring that the cutting tool 406 adaptively aligns with the pipe while not interfering with the operation of rotating the chuck 602 to process the thread.

[0056] Quick disassembly of the cutter head:

[0057] When processing threads of unusual specifications, or when the cutting tool 406 needs maintenance and replacement, the worker pinches the cutting tool 406 and pulls the cutting tool 406 toward the outside of the cutter disc 403, so that the cutting tool 406 drives the latch 405 to slide toward the outside of the socket 404, so that the inclined surface of the second block 411 continuously pushes the first block 410, so that the first block 410 pushes the sliding plate 409 to slide toward the side of the second sliding groove 408 away from the socket 404 and squeezes the spring 1 412. Then, when the second block 411 slides between the two blocks 1 410, the spring 1 412 stretches again to push the sliding plate 409 toward the socket 404, so that the block 1 410 is reset and locked again. The worker then pulls the cutting tool 406 outwards to cause the second block 411 to repeatedly squeeze the first block 410 until the latch 405 slides out of the socket 404, thereby achieving quick disassembly of the cutting tool 406. During installation, the latch 405 at one end of the cutting tool 406 to be replaced is aligned with the socket 404 and inserted, so that the inclined surfaces of the second block 411 and the first block 410 cooperate to push the sliding plate 409 until the latch 405 contacts the inner wall of the socket 404 and cannot be pushed further. The cutting tool 406 is installed, thereby achieving the effect of quick installation of the cutting tool 406, thereby facilitating the replacement and maintenance of the cutting tool 406 and making it more convenient to use.

[0058] The above descriptions are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC machine tool for pipe thread processing, characterized in that: include: A bed (1), a linear module (2) is fixedly mounted on one side of the bed (1), a slide (3) is threadedly connected to the linear module (2), and a multi-tool head assembly is arranged on the top of the slide (3); The multi-tool head assembly comprises a slide table 2 (401) slidably connected to the top of a slide table 1 (3); the top of the slide table 2 (401) is rotatably connected to a rotating shaft (402); the top of the rotating shaft (402) is fixedly connected to a cutter disc (403); a plug hole (404) is provided on the cutter disc (403); the plug holes (404) are provided with no less than eight, and the eight plug holes (404) are equidistantly arranged in an annular manner on the side of the cutter disc (403); a plug pin (405) is inserted into the plug hole (404); a cutting blade (406) is fixedly connected to one end of the plug pin (405) away from the plug hole (404); a plurality of sliding grooves 1 (407) are equidistantly arranged in an annular manner on the cutter disc (403); the sliding grooves 1 (407) are equidistantly arranged in annular manner. 07) two in a group, each group of the sliding grooves 1 (407) is symmetrically arranged on both sides of the insertion hole (404), a plurality of sliding grooves 2 (408) are equidistantly arranged in a ring on the knife disc (403), two of the sliding grooves 2 (408) in a group, one group of the sliding grooves 2 (408) is arranged on the side of the two sliding grooves 1 (407) away from the insertion hole (404), a sliding plate (409) is slidably connected in the sliding grooves 2 (408), a side of the sliding plate (409) close to the insertion hole (404) is fixedly connected with a clamping block 1 (410), one end of the latch (405) close to the insertion hole (404) is symmetrically fixedly connected with a clamping block 2 (411), and a spring 1 (412) is arranged in the sliding grooves 2 (408).

2. A CNC machine tool for pipe thread processing according to claim 1, characterized in that: The heights of the clamping block 1 (410) and the clamping block 2 (411) are the same as the sliding groove 1 (407), and the sliding plate (409) and the sliding groove 2 (408) form a limiting fit.

3. A CNC machine tool for pipe threading according to claim 2, characterized in that: The inclined surface of the first card block (410) faces the outside of the insertion hole (404), and the inclined surface of the second card block (411) faces the same direction as that of the first card block (410).

4. A CNC machine tool for pipe thread processing according to claim 1, characterized in that: A quantitative rotating assembly is arranged at the bottom of the knife disc (403), and the quantitative rotating assembly comprises a rotating disc (501) fixedly connected to the side wall of the rotating shaft (402), a fixing pin 1 (502) is fixedly connected to the top of the rotating disc (501), a fixing disc (503) is fixedly connected to the top of the rotating disc (501), a fixing pin 2 (504) is fixedly connected to the top of the fixing disc (503), a motor 1 (505) is fixedly installed on the top of the slide table 2 (401), a wheel disc (506) is fixedly connected to the output shaft of the motor 1 (505), a shifting groove (507) is provided on the wheel disc (506), and a shifting rod (508) is fixedly connected to the top of the wheel disc (506).

5. A CNC machine tool for pipe threading according to claim 4, characterized in that: There are no less than eight fixing pins 1 (502), and the eight fixing pins 1 (502) are arranged in a circular shape and equidistantly on the rotating disk (501). There are no less than eight fixing pins 2 (504), and the eight fixing pins 2 (504) are arranged in a circular shape and equidistantly on the fixed disk (503).

6. A CNC machine tool for pipe threading according to claim 5, characterized in that: The width of the shifting groove (507) is the same as the diameter of the first fixing pin (502), and the shifting rod (508) and the second fixing pin (504) form a shifting fit.

7. The CNC machine tool for pipe threading according to claim 1, characterized in that: A sensing component is arranged on one side of the top of the bed (1), and the sensing component comprises a fixed box (601) fixedly connected to one side of the bed (1); a chuck (602) is rotatably connected to the side of the fixed box (601) close to the bed (1); a pulley 1 (603) is fixedly connected to the outer arc surface of the chuck (602); a motor 2 (604) is fixedly installed on the top of the fixed box (601); a pulley 2 (605) is fixedly connected to the output shaft of the motor 2 (604); a belt is sleeved on the pulley 1 (603) and the pulley 2 (605); a plurality of claws (606) are slidably connected to the chuck (602) in an annular manner with equal spacing; a push plate is fixedly connected to the side of the plurality of claws (606) away from the chuck (602). (607), a fixing ring (608) is fixedly connected to the fixing box (601), and sliding rods (609) are slidably connected to both sides of the fixing ring (608), and an arc plate (610) is fixedly connected to one end of the sliding rod (609) close to the chuck (602), and a spring 2 (611) is arranged between the two arc plates (610) and the fixing ring (608), and two fixing cylinders (612) are fixedly connected to the fixing box (601), and the two fixing cylinders (612) are symmetrically arranged on both sides of the fixing ring (608), and the ends of the two sliding rods (609) away from the fixing ring (608) are respectively inserted into the two fixing cylinders (612), and the two fixing cylinders (612) are respectively provided with a push-type switch (613).

8. A CNC machine tool for pipe threading according to claim 7, characterized in that: There are no less than eight push-type switches (613), the eight push-type switches (613) are arranged at equal intervals, and the eight push-type switches (613) form an extrusion fit with the sliding rod (609).

9. The CNC machine tool for pipe threading according to claim 1, characterized in that: The top of the bed (1) is slidably connected with a tailstock (7).

10. The CNC machine tool for pipe threading according to claim 1, characterized in that: A plurality of chip removal grooves (8) are equidistantly provided on the top of the bed (1), and the bottom ends of the plurality of chip removal grooves (8) lead to a side of the bed (1) away from the linear module (2).

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