CN215316062U

CN215316062U - Lead screw cutting machine

Info

Publication number: CN215316062U
Application number: CN202120864729.9U
Authority: CN
Inventors: 邱丰冠; 王宝国
Original assignee: Yinchuan Heyi Technology Co ltd
Current assignee: Yinchuan Heyi Technology Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-28
Anticipated expiration: 2031-04-25

Abstract

A lead screw cutting machine, comprising: a first frame; the device comprises a material sliding frame, a material pushing frame and a material pushing frame, wherein a plurality of bars to be cut which are longitudinally arranged from front to back are arranged on the material sliding frame; the rolling supporting devices are arranged on the first rack and used for supporting the bars to be cut; the feeding device is used for conveying a plurality of bars to be cut to the rolling supporting device at one time and comprises a transverse material shifting mechanism and a transverse feeding mechanism; the second rack is arranged on the front side of the first rack; the clamping device is used for transversely clamping and conveying the bar to be cut forwards and is arranged on the second rack; and a cutting assembly arranged on the second frame. According to the screw rod cutting machine, the transverse material shifting mechanism and the transverse material feeding mechanism can be used for conveying the bar materials to be cut on the material sliding plate to the supporting roller in a plurality of groups, so that the cutting efficiency is greatly improved.

Description

Lead screw cutting machine

Technical Field

The utility model relates to the technical field of cutting equipment, in particular to a screw rod cutting machine.

Background

When producing the screw rod, the bar stock to be cut needs to be processed into a preset length. The existing screw rod cutting machine can only cut one screw rod material when cutting, so that the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lead screw cutting machine, which has high cutting efficiency.

The technical scheme adopted by the utility model for solving the technical problem is as follows: a lead screw cutting machine, comprising:

a first frame;

the device comprises a material sliding frame, a material pushing frame and a material pushing frame, wherein a plurality of bars to be cut which are longitudinally arranged from front to back are arranged on the material sliding frame;

the rolling supporting devices are arranged on the first rack and used for supporting the bar to be cut;

the feeding device is used for conveying a plurality of bars to be cut to the rolling supporting device at one time and comprises a transverse material shifting mechanism and a transverse feeding mechanism; the transverse material shifting mechanism comprises a longitudinally extending material shifting claw mounting longitudinal shaft, and the material shifting claw mounting longitudinal shaft is fixed on the material sliding frame; a plurality of material stirring claws are arranged on the material stirring claw mounting longitudinal shaft at intervals in a rotatable manner, and connecting rods are fixed on the material stirring claw mounting longitudinal shaft; the middle part of a connecting rod is rotatably arranged on the material sliding frame, one end of the connecting rod is hinged with the connecting rod, the other end of the connecting rod is hinged with a piston rod of a material shifting cylinder, and a cylinder body of the material shifting cylinder is fixed on the material sliding frame; the transverse feeding mechanism comprises a plurality of feeding claws with upward openings and a plurality of feeding cylinders which are correspondingly arranged; a piston rod of the feeding cylinder is upwards fixed on the feeding claw; a plurality of spur rack mounting cross beams which are longitudinally arranged at intervals are fixed on the first rack, and a transverse spur rack is arranged on each spur rack mounting cross beam in a transverse sliding manner; a cylinder body of a transverse cylinder is fixed on the first rack, and a piston rod of the transverse cylinder is fixedly connected with one transverse straight rack towards one transverse side;

the second rack is arranged on the front side of the first rack;

the clamping device is used for transversely clamping and conveying the bar to be cut forwards and is arranged on the second rack;

and a cutting assembly arranged on the second frame.

Preferably, the rolling support means comprises a plurality of support rollers longitudinally spaced and rotatably disposed to the first frame.

Preferably, two ends of the supporting roller are respectively rotatably arranged on a bearing seat through a bearing, the bearing seats are fixed on a supporting roller mounting frame, and the supporting roller mounting frame is arranged on the first rack in a lifting manner; a nut is fixed on the supporting roll mounting frame, the upper end and the lower end of a vertically arranged screw rod are rotatably arranged on the first rack, and the screw rod is in threaded connection with the nut; an adjusting longitudinal shaft is rotatably arranged on the first rack, a plurality of first bevel gears are coaxially fixed on the adjusting longitudinal shaft, a second bevel gear is coaxially and correspondingly fixed at the lower end of the screw rod, the first bevel gear and the second bevel gear are in transmission connection through a bevel gear set, and an adjusting hand wheel is arranged at one end of the adjusting longitudinal shaft.

Preferably, the clamping device comprises two first clamping components for clamping the bar to be cut from the front end and the rear end, and a second clamping component for temporarily clamping the front end of the bar to be cut at the front end;

the first clamping assembly comprises two vertical plates which are opposite at intervals in the front-back direction, and a clamp seat plate is fixed at the upper end of each vertical plate; a fixed clamping block and a movable clamping block which can transversely move relative to the fixed clamping block are fixed on the clamp seat plate; two guide rods extending longitudinally movably penetrate through the vertical plate of the first clamping assembly at the rear side; a rotating motor mounting frame is fixed on the front side of the first clamping assembly on the rear side, and a rotating motor is fixed on the rotating motor mounting frame; a longitudinal screw is coaxially fixed on a motor shaft of the rotating motor, a ball nut is correspondingly installed on a vertical plate of the first clamping assembly at the rear side, and the ball nut and the longitudinal screw are matched to form a ball screw pair; two ends of the guide rod are fixedly connected with the first frame; the front side the middle part is seted up the cutting of transversely extending and is stepped down the groove around the fixed clamp splice of first centre gripping subassembly and activity clamp splice.

Preferably, the second clamping assembly comprises a supporting vertical plate fixed on the second rack, a feeding cylinder mounting frame is fixed on the supporting vertical plate, and a cylinder body of a longitudinal moving cylinder is fixed on the feeding cylinder mounting frame; a clamping jaw driving cylinder mounting rack is fixed on the supporting vertical plate in a front-back sliding manner; a piston rod of the longitudinal moving cylinder is fixedly connected with the clamping jaw driving cylinder mounting rack; a rack guide plate is fixed on the clamping jaw driving cylinder mounting rack; the rack guide plate is vertically and slidably arranged on a vertical rack; the cylinder body of the clamping jaw driving cylinder is fixed at the upper end of the clamping jaw driving cylinder mounting frame, and a piston rod of the clamping jaw driving cylinder mounting frame is downwards fixedly connected with the vertical rack through a connecting block; the left side and the right side of the vertical rack are respectively provided with a finger, one end of each finger is provided with an engaging part engaged with the vertical rack, and the near end part of one end of each finger, which is provided with the engaging part, is hinged on the rack guide plate along a longitudinal axis; and an opening and closing clamping block is fixed at the other end of the finger.

Preferably, the cutting assembly comprises a rotating bracket rotatably arranged on the second frame along a longitudinal axis, and a cutting motor and a longitudinally extending connecting cylinder are fixedly arranged on the rotating bracket; a saw blade protecting cover is fixed at the rear end of the connecting cylinder, and one end of a saw blade shaft is arranged in the connecting cylinder in a penetrating way towards the rear and then is coaxially fixed with a saw blade; the other end of the saw blade shaft is in transmission connection with the cutting motor; and a cylinder body of a rotating bracket driving cylinder is fixed on the second rack, and a piston rod of the rotating bracket driving cylinder faces upwards and is hinged with the rotating bracket.

Preferably, a slag notch is fixed on the second frame, and the upper end of the slag notch faces upwards and approaches the saw blade.

Preferably, a blanking receiving plate is fixed on the second frame, and the blanking receiving plate faces backwards and is right opposite to the lower edge of the saw blade; and a blanking cylinder is fixed on the blanking receiving plate, and one end of the blanking cylinder transversely penetrates through the blanking receiving plate and then is vertically fixed with a blanking push plate.

Preferably, a material receiving groove is further fixed on the second rack, the bottom of the material receiving groove is arc-shaped, and one end of the material receiving groove extends towards one side to the edge of one side of the discharging push plate, which is far away from the discharging cylinder.

According to the screw rod cutting machine, the transverse material shifting mechanism and the transverse material feeding mechanism can be used for conveying the bar materials to be cut on the material sliding plate to the supporting roller in a plurality of groups, so that the cutting efficiency is greatly improved.

Drawings

Fig. 1 is a perspective view of a screw cutter according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged schematic view of detail A shown in FIG. 1;

FIG. 3 is a rear view of a loading device in accordance with a preferred embodiment of the present invention;

FIG. 4 is a combined perspective view of a clamping device and a cutting device in accordance with a preferred embodiment of the present invention;

FIG. 5 is a rear view of a second clamping assembly in accordance with a preferred embodiment of the present invention;

description of reference numerals:

01. a bar to be cut; 02. cutting the bar stock; 1. a first frame; 2. a material sliding frame; 301. a material pressing cylinder; 302. a material poking cylinder; 303. a connecting rod; 304. the material poking claw is provided with a longitudinal shaft; 305. a connecting rod; 306. a material poking claw; 307. a feeding claw; 308. a feeding cylinder; 309. a transverse spur rack; 310. a cross beam is arranged on the straight rack; 311. the synchronous gear is provided with a longitudinal shaft; 312. a synchronizing gear; 313. pressing the material head; 401. a support roller; 402. a support roller mounting frame; 403. a first cross member; 404. a bearing seat; 405. a nut; 406. adjusting the longitudinal axis; 407. a first bevel gear; 408. a second bevel gear; 409. adjusting a hand wheel; 5. a second frame; 6. a clamping device; 601. a vertical plate; 602. a clamp seat plate; 603. fixing the clamping block; 604. a movable clamping block; 605. the movable clamping block drives the cylinder; 606. a transverse guide rail; 607. a movable clamp block guide post; 608. supporting a vertical plate; 609. a feeding cylinder mounting rack; 610. a longitudinal moving cylinder; 611. the clamping jaw drives the cylinder mounting rack; 612. a rack guide plate; 614. a vertical rack; 615. connecting blocks; 616. a finger; 617. opening and closing the clamping block; 618. an engaging portion; 619. the clamping jaw drives the cylinder; 620. a rotating electric machine; 621. a longitudinal lead screw; 7. a cutting assembly; 701. a saw blade protecting cover; 702. a connecting cylinder; 703. a saw blade; 704. rotating the bracket; 705. cutting the motor; 706. the rotating bracket drives the air cylinder; 8. a material receiving groove; 901. a blanking cylinder; 902. blanking receiving plates; 903. blanking push plates; 904. a slag notch;

Detailed Description

The technical scheme of the utility model is clearly and completely described in the following with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model will be further explained with reference to the drawings.

Please refer to fig. 1 to 5. The utility model relates to a lead screw cutting machine, which comprises a first rack 1, a material sliding rack 2, a plurality of rolling supporting devices, a feeding device, a second rack 5, a cutting assembly 7 and a clamping device 6, wherein the clamping device is used for transversely clamping and forwards conveying a bar material 01 to be cut.

Wherein, a plurality of to-be-cut bars 01 longitudinally arranged from front to back are arranged on the material sliding frame 2. A plurality of rolling supporting devices are arranged on the first machine frame 1 and used for supporting the bar stock 01 to be cut. The second frame 5 is disposed at the front side of the first frame 1. The clamping device 6 is arranged on the second frame 5. The cutting assembly 7 is disposed on the second frame 5.

The rolling support means particularly comprises a plurality of support rollers 401 longitudinally spaced and rotatably arranged to the first frame 1. Both ends of the support roller 401 are rotatably provided on a bearing housing 404 through bearings, respectively. The bearing housing 404 is secured to a support roller mounting bracket 402. The support roller mounting bracket 402 is arranged on a first beam 403 fixed on the first frame 1 in a liftable manner. A nut 405 is fixed to the support roller mount 402. The upper end and the lower end of a vertically arranged screw rod are rotatably arranged on the first frame 1. The screw is threadedly connected to the nut 405. An adjustment longitudinal shaft 406 is rotatably arranged on the first frame 1. A plurality of first bevel gears 407 are coaxially fixed to the adjustment longitudinal shaft 406. A second bevel gear 408 is coaxially fixed to the lower end of the screw in correspondence. The first bevel gear 407 and the second bevel gear 408 are in transmission connection through a bevel gear set. An adjusting handwheel 409 is arranged at one end of the adjusting longitudinal shaft 406.

The feeding device is used for conveying a plurality of bars 01 to be cut to the rolling supporting device at one time. The feeding device specifically comprises a transverse material poking mechanism and a transverse feeding mechanism.

The lateral kick-off mechanism includes a longitudinally extending kick-off finger mounting longitudinal shaft 304. The material poking claw mounting longitudinal shaft 304 is fixed on the material sliding frame 2. A plurality of claw setting members 306 are spaced apart and rotatably mounted on the claw mounting longitudinal shaft 304. A connecting rod 305 is fixed on the material poking claw mounting longitudinal shaft 304. A link 303 is rotatably provided at a middle portion thereof to the chute 2. One end of the connecting rod 303 is hinged to the connecting rod 305. The other end of the connecting rod 303 is hinged with a piston rod of a material poking cylinder 302. The cylinder body of the material poking cylinder 302 is fixed on the material sliding frame 2.

The transverse feeding mechanism comprises a plurality of feeding claws 307 with upward openings and a plurality of feeding air cylinders 308 which are correspondingly arranged. The piston rod of the feeding cylinder 308 is fixed on the feeding claw 307 upward. A plurality of spur rack mounting cross beams 310 are fixed to the first frame 1 at longitudinally spaced intervals. A transverse spur rack 309 is slidably disposed transversely on spur rack mounting beam 310. A cylinder body of a traverse cylinder is fixed to the first frame 1. The piston rod of the traversing cylinder is fixedly connected with one of the transverse spur racks 309 towards one transverse side.

Wherein, a longitudinally extending synchronizing gear mounting longitudinal shaft 311 is rotatably arranged on the first frame 1. A plurality of synchronizing gears 312 are fixed to the synchronizing gear mounting longitudinal shaft 311 at intervals. Each synchronizing gear 312 is correspondingly engaged with one of the transverse spur racks 309.

The clamping device 6 comprises two first clamping assemblies for clamping the bar 01 to be cut from the front end and the rear end, and a second clamping assembly for temporarily clamping the front end of the bar 01 to be cut at the front end.

The first clamping assembly comprises two vertical plates 601 which are opposite to each other at intervals. A clamp seat plate 602 is fixed to the upper end of the vertical plate 601. The clamp base plate 602 is fixed with a fixed clamp block 603 and a movable clamp block 604 which can move transversely relative to the fixed clamp block 603. Two longitudinally extending guide rods movably penetrate through the vertical plate 601 of the first clamping assembly at the rear side. A rotary motor mounting frame is fixed to the front side of the first clamping assembly on the rear side. A rotating motor 620 is fixed to the rotating motor mounting bracket. A longitudinal screw 621 is coaxially fixed to a motor shaft of the rotating motor 620. A ball nut is correspondingly installed on the vertical plate 601 of the first clamping assembly at the rear side. The ball nut cooperates with the longitudinal screw 621 to form a ball screw assembly. Two ends of the guide rod are fixedly connected with the second frame 5. The front and back middle parts of the fixed clamping block 603 and the movable clamping block 604 of the first clamping assembly on the front side are provided with transversely extending cutting abdicating grooves.

Wherein the movable clamp block 604 is driven by a movable clamp block driving cylinder 605. The cylinder body of the movable clamp block driving cylinder 605 is fixed on the clamp seat plate 602. The piston rod of the movable clamping block driving cylinder 605 is fixedly connected with the corresponding movable clamping block 604. The movable clamp blocks 604 are slidably disposed on fixed cross rails 606 on the clamp base plate 602.

The first clamping assembly at the front side further includes two movable clamping block guide posts 607 spaced from each other in the front-to-back direction. The movable clamp block guide column 607 is fixed to the upper end of the second frame 5. The movable clamp block 604 is slidably disposed on the movable clamp block guide post 607.

The second clamping assembly includes a support riser 608 fixed to the second frame 5. A feed cylinder mounting 609 is fixed to the support upright 608. The body of a longitudinal cylinder 610 is secured to the feed cylinder mounting 609. A jaw drive cylinder mount 611 is slidably mounted back and forth on support riser 608. The piston rod of the longitudinal cylinder 610 is fixedly connected with the clamping jaw driving cylinder mounting rack 611. A rack guide plate 612 is fixed on the jaw driving cylinder mounting frame 611. The rack guide plate 612 is vertically slidably disposed on a vertical rack 614. The cylinder body of the jaw drive cylinder 619 is fixed to the upper end of the jaw drive cylinder mounting bracket 611. The piston rod of the clamping jaw driving cylinder mounting rack 611 is downwards fixedly connected with the vertical rack 614 through a connecting block 615. The left and right sides of the vertical rack 614 are each provided with a finger 616. An engaging portion 618 that engages with the vertical rack 614 is provided on one end of the finger 616. A proximal end portion of one end of the finger 616 provided with the engaging portion 618 is hinged to the rack guide plate 612 along a longitudinal axis. The other end of the finger 616 is fixed with a snap clamp block 617. The opening and closing clamping block 617, the fixed clamping block 603 and the movable clamping block 604 are all provided with V-shaped clamping grooves.

The clamping device clamps through the two first clamping assemblies during cutting, feeds through the first clamping assembly and the second clamping assembly on the rear side during feeding, and can be used for clamping a plurality of bars processed at one time.

Wherein the cutting assembly 7 comprises a rotating bracket 704 rotatably arranged on the second frame 5 along a longitudinal axis. A cutting motor 705 and a longitudinally extending connecting cylinder 702 are fixedly arranged on the rotating bracket 704. A blade guard 701 is fixed to the rear end of the connecting cylinder 702. One end of a saw blade shaft is inserted through the connecting cylinder 702 toward the rear and then coaxially fixed with a saw blade 703. The other end of the saw blade shaft is drivingly connected to a cutting motor 705. A rotary bracket driving cylinder 706 has its body fixed to the second frame 5. The piston rod of the rotating bracket driving cylinder 706 is hinged with the rotating bracket 704 upwards.

In other embodiments. Preferably. A slag notch 904 is fixed to the second frame 5. The upper end of the slag notch 904 is directed upwardly toward the blade 703.

In other embodiments. Preferably. A blanking receiving plate 902 is fixed on the second frame 5. The blanking receiving plate 902 faces rearward and is opposite to the lower edge of the saw blade 703. A blanking cylinder 901 is fixed on the blanking receiving plate 902. One end of the blanking cylinder 901 transversely penetrates through the blanking receiving plate 902 and is vertically fixed with a blanking push plate 903. A material receiving groove 8 is also fixed on the second frame 5. The bottom of the material receiving groove 8 is arc-shaped. One end of the material receiving groove 8 extends to the edge of the side of the blanking push plate 903 far away from the blanking cylinder 901. The blanking receiving plate 902 and the receiving groove 8 are used for receiving the cut bar stock 02 cut by the cutting assembly 7.

In other embodiments. Preferably. The front end and the rear end of the material sliding frame 2 are respectively provided with an end plate. A material pressing cylinder 301 is fixed on the end plate on the rear side. The piston rod of the material pressing cylinder 301 is fixedly connected with a material pressing head 313 after passing through the corresponding end plate. The material pressing head 313 can be used for intermittently clamping the upper bar 01 to be cut at a predetermined position. Can avoid the adverse effect on the material stirring.

The above are only preferred embodiments of the present invention. It should be noted that. As would be apparent to one of ordinary skill in the art. Without departing from the principles of the present invention. Several improvements and refinements can also be made. Such modifications and refinements are also to be considered within the scope of the present invention.

Other parts of the utility model not described in detail are known in the art. And thus will not be described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention. And not as restrictive. Although the present invention has been described in detail with reference to the foregoing embodiments. Those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified. Or equivalents may be substituted for some or all of these features. And such modifications or substitutions. The essence of the corresponding technical solutions does not depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lead screw cutting machine, characterized by comprising:

a first frame (1);

the device comprises a material sliding frame (2), wherein a plurality of to-be-cut bars (01) which are longitudinally arranged from front to back are arranged on the material sliding frame (2);

a plurality of rolling supporting devices which are arranged on the first machine frame (1) and are used for supporting the bar stock (01) to be cut;

the feeding device is used for conveying a plurality of bars (01) to be cut to the rolling supporting device at one time and comprises a transverse material poking mechanism and a transverse feeding mechanism; the transverse material shifting mechanism comprises a longitudinal material shifting claw mounting longitudinal shaft (304) which extends longitudinally, and the material shifting claw mounting longitudinal shaft (304) is fixed on the material sliding frame (2); a plurality of material stirring claws (306) are arranged on the material stirring claw mounting longitudinal shaft (304) at intervals in a rotatable manner, and a connecting rod (305) is fixed on the material stirring claw mounting longitudinal shaft (304); the middle part of a connecting rod (303) is rotatably arranged on the material sliding frame (2), one end of the connecting rod (303) is hinged with the connecting rod (305), the other end of the connecting rod (303) is hinged with a piston rod of a material poking cylinder (302), and a cylinder body of the material poking cylinder (302) is fixed on the material sliding frame (2); the transverse feeding mechanism comprises a plurality of feeding claws (307) with upward openings and a plurality of feeding cylinders (308) which are correspondingly arranged; a piston rod of the feeding cylinder (308) is upwards fixed on the feeding claw (307); a plurality of spur rack mounting cross beams (310) which are longitudinally arranged at intervals are fixed on the first rack (1), and a transverse spur rack (309) is arranged on the spur rack mounting cross beam (310) in a transverse sliding manner; a cylinder body of a transverse cylinder is fixed on the first rack (1), and a piston rod of the transverse cylinder is fixedly connected with one transverse straight rack (309) towards one transverse side;

the second rack (5) is arranged on the front side of the first rack (1);

a clamping device (6) for clamping the bar (01) to be cut transversely and conveying it forwards, said clamping device (6) being arranged on the second frame (5);

and a cutting assembly (7) arranged on the second frame (5).

2. Screw cutting machine according to claim 1, wherein said rolling support means comprise a plurality of support rollers (401) longitudinally spaced and rotatably arranged to said first frame (1).

3. Lead screw cutting machine according to claim 2, characterized in that the support roller (401) is rotatably mounted at each of its two ends on a bearing housing (404) via bearings, the bearing housing (404) is fixed on a support roller mounting bracket (402), and the support roller mounting bracket (402) is arranged on the first frame (1) in a liftable manner; a nut (405) is fixed on the supporting roller mounting frame (402), the upper end and the lower end of a vertically arranged screw rod are rotatably arranged on the first rack (1), and the screw rod is in threaded connection with the nut (405); an adjusting longitudinal shaft (406) is rotatably arranged on the first frame (1), a plurality of first bevel gears (407) are coaxially fixed on the adjusting longitudinal shaft (406), a second bevel gear (408) is coaxially and correspondingly fixed at the lower end of the screw rod, the first bevel gear (407) and the second bevel gear (408) are in transmission connection through a bevel gear set, and an adjusting hand wheel (409) is arranged at one end of the adjusting longitudinal shaft (406).

4. Screw cutting machine as claimed in claim 1, characterized in that said gripping means (6) comprise two first gripping assemblies for gripping the bar (01) to be cut from the front and rear ends, and one second gripping assembly for temporarily gripping the front end of the bar (01) to be cut at the front end;

the first clamping assembly comprises two vertical plates (601) which are opposite at intervals in a front-back mode, and a clamp seat plate (602) is fixed at the upper end of each vertical plate (601); a fixed clamping block (603) and a movable clamping block (604) which can transversely move relative to the fixed clamping block (603) are fixed on the clamp seat plate (602); two guide rods extending longitudinally movably penetrate through a vertical plate (601) of the first clamping assembly at the rear side; a rotary motor mounting frame is fixed on the front side of the first clamping assembly on the rear side, and a rotary motor (620) is fixed on the rotary motor mounting frame; a longitudinal screw (621) is coaxially fixed on a motor shaft of the rotating motor (620), a ball nut is correspondingly installed on a vertical plate (601) of the first clamping assembly at the rear side, and the ball nut and the longitudinal screw (621) are matched to form a ball screw pair; two ends of the guide rod are fixedly connected with the first rack (1); the front middle part and the rear middle part of the fixed clamping block (603) and the movable clamping block (604) of the first clamping assembly on the front side are provided with transversely extending cutting abdicating grooves.

5. Lead screw cutting machine according to claim 4, characterized in that the second clamping assembly comprises a supporting vertical plate (608) fixed to the second frame (5), a feeding cylinder mounting bracket (609) is fixed to the supporting vertical plate (608), and the cylinder body of a longitudinal cylinder (610) is fixed to the feeding cylinder mounting bracket (609); a clamping jaw driving cylinder mounting rack (611) is fixed on the supporting vertical plate (608) in a front-back sliding manner; a piston rod of the longitudinal moving cylinder (610) is fixedly connected with the clamping jaw driving cylinder mounting rack (611); a rack guide plate (612) is fixed on the clamping jaw driving cylinder mounting rack (611); the rack guide plate (612) is vertically and slidably arranged on a vertical rack (614); the cylinder body of a clamping jaw driving cylinder (619) is fixed at the upper end of the clamping jaw driving cylinder mounting frame (611), and a piston rod of the clamping jaw driving cylinder mounting frame (611) faces downwards and is fixedly connected with the vertical rack (614) through a connecting block (615); a finger (616) is arranged on each of the left side and the right side of the vertical rack (614), an engaging part (618) engaged with the vertical rack (614) is arranged on one end of the finger (616), and the proximal end of one end, provided with the engaging part (618), of the finger (616) is hinged to the rack guide plate (612) along a longitudinal axis; the other end of the finger (616) is fixed with an opening and closing clamping block (617).

6. Screw cutting machine according to claim 1, wherein the cutting assembly (7) comprises a rotary bracket (704) rotatably arranged on the second frame (5) along a longitudinal axis, the rotary bracket (704) being fixedly provided with a cutting motor (705) and a longitudinally extending connecting cylinder (702); a saw blade protection cover (701) is fixed at the rear end of the connecting cylinder (702), and one end of a saw blade shaft is arranged in the connecting cylinder (702) towards the rear and then coaxially fixed with a saw blade (703); the other end of the saw blade shaft is in transmission connection with the cutting motor (705); the cylinder body of a rotating bracket driving cylinder (706) is fixed on the second rack (5), and the piston rod of the rotating bracket driving cylinder (706) is upwards hinged with the rotating bracket (704).

7. Lead screw cutting machine according to claim 6, characterized in that a slag notch (904) is fixed to the second frame (5), the upper end of the slag notch (904) facing upwards near the saw blade (703).

8. The screw cutting machine according to claim 7, characterized in that a blanking receiving plate (902) is fixed on the second frame (5), and the blanking receiving plate (902) faces backward and is opposite to the lower edge of the saw blade (703); a blanking cylinder (901) is fixed on the blanking receiving plate (902), and one end of the blanking cylinder (901) transversely penetrates through the blanking receiving plate (902) and then is vertically fixed with a blanking push plate (903).

9. The screw rod cutting machine according to claim 8, wherein a receiving groove (8) is further fixed on the second frame (5), the bottom of the receiving groove (8) is arc-shaped, and one end of the receiving groove (8) extends to the edge of the side, away from the blanking cylinder (901), of the blanking push plate (903) towards one side.