阅读说明：本技术 一种加工方便的u型螺栓用车螺纹设备及加工方法 (Conveniently-machined U-shaped bolt threading equipment and machining method ) 是由 胡余轩 于 2021-06-16 设计创作，主要内容包括：本发明公开了一种加工方便的U型螺栓用车螺纹设备及加工方法,涉及车螺纹加工技术领域,包括底板,底板上设置有用于夹住胚料后,紧接着带动胚料旋转的驱动机构,驱动机构包括旋转驱动源,底板的上表面固定连接有支撑板,旋转驱动源固定连接在支撑板的侧面,旋转驱动源的输出轴固定连接有转轴,支撑板的侧面固定连接有支撑柱一和支撑柱二,支撑柱一的侧面固定连接有固定盘一。本发明具备了通过旋转驱动源的持续转动,可在胚料被夹持固定后,紧接着胚料可继续旋转以配合车螺纹刀具进行车螺纹加工,其整个流程更加流畅与简便,加工效率更高,操作更加快捷,并且本发明可同步对胚料的两端进行车螺纹加工,其加工效率更高。(The invention discloses a convenient-to-machine U-shaped bolt threading device and a convenient-to-machine U-shaped bolt threading method, and relates to the technical field of threading machining. The invention has the advantages that through the continuous rotation of the rotary driving source, the blank can be clamped and fixed and then can continuously rotate to match with the threading tool for threading, the whole process is smoother and simpler, the machining efficiency is higher, the operation is quicker, and the invention can synchronously carry out threading machining on two ends of the blank, and the machining efficiency is higher.)

1. The utility model provides a processing convenience's for U type bolt car screw thread equipment, includes bottom plate (1), its characterized in that: the bottom plate (1) is provided with a driving mechanism for driving the blank (2) to rotate after the blank (2) is clamped; the driving mechanism comprises a rotary driving source (3), a supporting plate (4) is fixedly connected to the upper surface of the bottom plate (1), and the rotary driving source (3) is fixedly connected to the side surface of the supporting plate (4).

2. The threading equipment for the U-shaped bolt convenient to machine according to claim 1, characterized in that: the output shaft fixedly connected with pivot (5) of rotary drive source (3), the side fixedly connected with support column one (6) and support column two (7) of backup pad (4).

3. The threading equipment for the U-shaped bolt convenient to machine according to claim 2, characterized in that: the side fixedly connected with fixed disk (8) of support column one (6), the side fixedly connected with fixed disk two (9) of support column two (7), the side of fixed disk one (8) is offered and is used for circular logical groove (10) that fixed disk two (9) stretched into to and radial groove (11), the side of fixed disk two (9) is offered and is used for opening (12) that stock (2) passed, the side rotation of fixed disk two (9) is connected with stay tube (13), the side fixedly connected with gear one (14) of stay tube (13), arc wall (15) have been offered to the side of gear one (14), the cell wall sliding connection of arc wall (15) has sliding column (16), the tip of sliding column (16) with circular logical groove (10) with radial groove (11) sliding connection, the fixed surface of sliding column (16) is connected with two spacing rings (17), opposite sides of the two limiting rings (17) are respectively attached to two sides of the first fixed disk (8), a first through hole is formed in the surface of the sliding column (16), a sliding column (18) is connected to the wall of the second through hole in a sliding manner, clamping blocks (19) are fixedly connected to the end portions of the sliding column (18), a first spring (20) is sleeved on the surface of the sliding column (18), two end portions of the first spring (20) are respectively fixedly connected with the surface of the sliding column (16) and the surface of the clamping blocks (19), a second through hole is formed in the surface of the clamping blocks (19), the wall of the two second through holes are jointly and slidably connected with a limiting column (21), limiting plates (22) are fixedly connected to two end portions of the limiting column (21), a second gear (23) is fixedly connected to the surface of the rotating shaft (5), and the second gear (23) is meshed with the first gear (14), the device also comprises a self-correcting mechanism for the position of the blank (2) before being clamped.

4. The threading equipment for the U-shaped bolt convenient to machine according to claim 3, characterized in that: the position self-correcting mechanism comprises two external threads (24) with opposite thread directions, the two external threads (24) are respectively arranged at two ends of the rotating shaft (5), the thread grooves of the two external threads (24) are in threaded connection with a moving plate (25), the lower surface of the moving plate (25) is in sliding connection with the upper surface of the bottom plate (1), the opposite sides of the moving plate (25) are in fixed connection with a second spring (26), opposite ends of the second spring (26) are in fixed connection with a fixed plate (27), and the fixed plates (27) are in fixed connection with the upper surface of the bottom plate (1), an arc groove (28) is formed in the side face of the first fixed disc (8), a third spring (29) is sleeved on the surface of the limiting column (21), and two end parts of the spring III (29) are fixedly connected with the opposite sides of the two clamping blocks (19) respectively.

5. The threading device for a U-bolt convenient to machine according to any one of claims 2, 3 or 4, characterized in that: the opposite sides of the two clamping blocks (19) are fixedly connected with rubber cushions (30).

6. The threading equipment for the U-shaped bolt convenient to machine according to claim 2, characterized in that: the rotary driving source (3) is a servo motor.

7. The threading equipment for the U-shaped bolt convenient to machine according to claim 4, characterized in that: the diameter of sliding column (16) all with the groove footpath of circular arc groove (28), the groove footpath of arc wall (15), the groove footpath of radial groove (11), and circular logical groove (10) with the groove footpath looks adaptation of the ring channel that forms between fixed disk two (9).

8. A method for processing a threading device for U-bolt according to any of claims 3-7, characterized by comprising the steps of:

s1: through the operation of the driving mechanism, after the blank (2) is automatically clamped and fixed, the blank (2) is driven to rotate so as to be matched with a threading tool to carry out threading machining;

s2: after the thread machining is finished, the clamping and fixing of the blank (2) are automatically released through the operation of the driving mechanism, and then the blank (2) is taken down.

Technical Field

The invention relates to the technical field of thread turning, in particular to a thread turning device and a thread turning method for a U-shaped bolt, which are convenient to machine.

Background

The U-shaped bolt needs to be threaded at two ends of a straight line type blank between bends.

A threading device for U-bolt as disclosed in chinese patent CN201910512093.9, published: 20190802, the citation file includes a lathe board, the threading device includes a connecting mechanism, a main motor and a positioning cylinder, the lathe board is provided with a connecting electric cylinder, the main motor is arranged on the output end of the connecting electric cylinder, the connecting mechanism is arranged on the output shaft of the main motor, the positioning cylinder is horizontally arranged at one end of the connecting electric cylinder, two sections of the positioning cylinder are respectively sleeved with two first connecting matching blocks, the middle section of the positioning cylinder is sleeved with a positioning beam plate which is in rotary fit with the positioning beam plate, one end of the positioning cylinder far away from the connecting electric cylinder is provided with a threading cutter mechanism, a rotary air cylinder which is in transmission connection with the positioning beam plate is arranged below the positioning beam plate, the connecting mechanism includes a plurality of insertion blocks, each first connecting matching block is provided with a plurality of butt-joint grooves for all the insertion blocks to pass through one by one to one, a stopper is arranged above the positioning beam plate, the citation file can automatically carry out threading on two ends of the blank of U-shaped bolts, the manual repeated unloading operation is saved.

However, in the cited document, only one end of the blank can be threaded at a time, the machining efficiency is relatively low, and at each time of the threading, an operator needs to separately control a plurality of driving parts to fix, displace and rotate the blank, so that the operation is relatively complicated, and the machining efficiency is relatively low.

Disclosure of Invention

The invention aims to provide a threading device and a threading method for a U-shaped bolt, which are convenient to machine, and the threading device and the threading method have the advantages that through the continuous rotation of a rotary driving source, after a blank is clamped and fixed, the blank can continuously rotate to be matched with a threading tool to carry out threading machining, the whole process is smoother and simpler, the machining efficiency is higher, and the operation is quicker.

In order to achieve the purpose, the invention provides the following technical scheme: a convenient-to-machine U-shaped bolt threading device comprises a bottom plate, wherein a driving mechanism used for clamping a blank and then driving the blank to rotate is arranged on the bottom plate.

Preferably, the driving mechanism comprises a rotary driving source, the upper surface of the bottom plate is fixedly connected with a supporting plate, the rotary driving source is fixedly connected to the side surface of the supporting plate, the output shaft of the rotary driving source is fixedly connected with a rotating shaft, the side surface of the supporting plate is fixedly connected with a supporting column I and a supporting column II, the side surface of the supporting column I is fixedly connected with a fixed disk II, the side surface of the fixed disk I is provided with a circular through groove for the fixed disk II to extend into, and a radial groove, the side surface of the fixed disk II is provided with an opening for the blank to pass through, the side surface of the fixed disk II is rotatably connected with a supporting tube, the side surface of the supporting tube is fixedly connected with a gear I, the side surface of the gear I is provided with an arc-shaped groove, and the groove wall of the arc-shaped groove is slidably connected with a sliding column, the tip of slip post with circular logical groove with radial groove sliding connection, the fixed surface of slip post is connected with two spacing rings, two the opposite side of spacing ring respectively with the both sides of fixed disk one are laminated mutually, through-hole one has been seted up on the surface of slip post, the pore wall sliding connection of through-hole two has the traveller, the tip fixedly connected with clamp splice of traveller, the surface cover of traveller is equipped with spring one, the both ends of spring one respectively with the surface of slip post with the fixed surface of clamp splice is connected, through-hole two has been seted up on the surface of clamp splice, two the common sliding connection of pore wall of through-hole two has spacing post, the equal fixedly connected with limiting plate in both ends of spacing post, the fixed surface of pivot is connected with gear two, gear two with gear one meshes mutually.

Preferably, a position self-correcting mechanism is further included before the blank is clamped.

Preferably, the position self-correcting mechanism comprises two external threads with opposite thread directions, the two external threads are respectively arranged at two ends of the rotating shaft, thread grooves of the two external threads are in threaded connection with a moving plate, the lower surfaces of the two moving plates are in sliding connection with the upper surface of the bottom plate, the opposite sides of the two moving plates are in fixed connection with a second spring, opposite ends of the two second springs are in fixed connection with fixed plates, the two fixed plates are in fixed connection with the upper surface of the bottom plate, an arc groove is formed in the side surface of the first fixed plate, a third spring is sleeved on the surface of the limiting column, and two end portions of the third spring are respectively in fixed connection with the opposite sides of the two clamping blocks.

Preferably, the opposite sides of the two clamping blocks are fixedly connected with rubber cushions.

Preferably, the rotation drive source is a servo motor.

Preferably, the diameter of the sliding column is matched with the groove diameter of the arc groove, the groove diameter of the radial groove and the groove diameter of the annular groove formed between the circular through groove and the second fixed plate.

The invention provides a processing method which comprises the following steps: a processing method of a threading device for a U-shaped bolt convenient to process comprises the following steps:

s1: through the operation of the driving mechanism, after the blank is automatically clamped and fixed, the blank is driven to rotate so as to be matched with a threading tool to carry out threading machining;

s2: after the threading is finished, the clamping and fixing of the blank are automatically released through the operation of the driving mechanism, and then the blank is taken down.

Compared with the prior art, the invention has the following beneficial effects:

firstly, before the blank is clamped and fixed, the two moving plates move towards opposite directions so as to respectively push two sides of the blank, so that parts to be processed at two ends of the blank can be respectively aligned to two threading tool mechanisms (not shown in the figure, refer to the position between the threading tool mechanism and the blank in the document cited in the background technology), and time and labor are wasted and the efficiency is low when the position of the blank is manually calibrated.

Secondly, under the condition that the rotary driving source rotates positively, the sliding column does not move radially, so that clamping force cannot be generated on the blank, and the position of the blank can be corrected conveniently.

After the position of the blank is self-corrected, the rotating shaft is driven to rotate reversely by the reverse rotation of the rotary driving source, and the two moving plates are driven to be separated from two sides of the blank by the reverse rotation of the rotating shaft, so that the situation that the moving plates generate friction force with the side surfaces of the blank when the blank is placed in the middle of the blank and the side surfaces of the blank are easily abraded is avoided.

The rotary driving source continuously rotates in the reverse direction, the blank can continuously rotate to match with the threading tool to perform threading machining after the blank is clamped and fixed, the whole process is smooth and simple, the machining efficiency is higher, the operation is quicker, the two ends of the blank can be synchronously threaded, and the machining efficiency is higher.

And fifthly, the clamping and fixing of the blank can be automatically released through the forward rotation of the rotary driving source, so that an operator can conveniently take the blank, the automation degree is high, and the efficiency is better.

And through the arrangement, when the blank continuously rotates, the movable plate can not move towards both sides all the time by utilizing the elastic tension of the second spring, so that the movable plate can form threaded fit with the external thread again.

Drawings

FIG. 1 is a front view of the structure of the present invention;

FIG. 2 is a right side view of a first state of the blank, a first support column, a second support column, a first fixed disk, a second fixed disk, a circular through groove, a radial groove, an opening, a support tube, a sliding column, a limit ring and an arc groove structure of the invention;

FIG. 3 is a left side view of the blank, the rotating shaft, the first gear, the arc-shaped groove, the sliding column, the clamping block, the first spring, the limiting column, the limiting plate, the second gear, the third spring and the rubber cushion structure corresponding to the state shown in FIG. 2;

FIG. 4 is a second state right view of the blank, the first support column, the second support column, the first fixed disk, the second fixed disk, the circular through groove, the radial groove, the opening, the support tube, the sliding column, the limit ring and the circular arc groove structure of the invention;

fig. 5 is a left side view of the blank, the rotating shaft, the first gear, the arc-shaped groove, the sliding column, the clamping block, the first spring, the limiting column, the limiting plate, the second gear, the third spring and the rubber cushion structure corresponding to the state shown in fig. 4.

In the figure: 1-bottom plate, 2-blank, 3-rotary driving source, 4-supporting plate, 5-rotating shaft, 6-supporting column I, 7-supporting column II, 8-fixing disc I, 9-fixing disc II, 10-circular through groove, 11-radial groove, 12-opening, 13-supporting tube, 14-gear I, 15-arc groove, 16-sliding column, 17-limiting ring, 18-sliding column, 19-clamping block, 20-spring I, 21-limiting column, 22-limiting plate, 23-gear II, 24-external thread, 25-moving plate, 26-spring II, 27-fixing plate, 28-arc groove, 29-spring III and 30-rubber cushion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a convenient processing's lathe tool equipment for U type bolt, includes bottom plate 1, be provided with on bottom plate 1 and be used for cliping stock 2 back, drive immediately 2 rotatory actuating mechanism of stock, through actuating mechanism's function, can be automatically to 2 centre gripping of stock fix the back, drive stock 2 soon afterwards rotatoryly to cooperation lathe tool carries out the lathe thread processing, and its whole flow is more smooth and simple and convenient, and machining efficiency is higher, operates more swiftly.

Further, the driving mechanism comprises a rotary driving source 3, the upper surface of the bottom plate 1 is fixedly connected with a supporting plate 4, the rotary driving source 3 is fixedly connected to the side surface of the supporting plate 4, the output shaft of the rotary driving source 3 is fixedly connected with a rotating shaft 5, the side surface of the supporting plate 4 is fixedly connected with a supporting column I6 and a supporting column II 7, the side surface of the supporting column I6 is fixedly connected with a fixed disk I8, the side surface of the supporting column II 7 is fixedly connected with a fixed disk II 9, the side surface of the fixed disk I8 is provided with a circular through groove 10 for the fixed disk II 9 to extend into, and a radial groove 11, the side surface of the fixed disk II 9 is provided with an opening 12 for the blank 2 to pass through, the side surface of the fixed disk II 9 is rotatably connected with a supporting tube 13, the side surface of the supporting tube 13 is fixedly connected with a gear I14, and the side surface of the gear I14 is provided with an arc-shaped groove 15, the wall of the arc-shaped groove 15 is slidably connected with a sliding column 16, the end of the sliding column 16 is slidably connected with the circular through groove 10 and the radial groove 11, the surface of the sliding column 16 is fixedly connected with two limiting rings 17, the opposite sides of the two limiting rings 17 are respectively attached to the two sides of the first fixed disk 8, the surface of the sliding column 16 is provided with a first through hole, the wall of the second through hole is slidably connected with a sliding column 18, the end of the sliding column 18 is fixedly connected with a clamping block 19, the surface of the sliding column 18 is sleeved with a first spring 20, the two ends of the first spring 20 are respectively fixedly connected with the surface of the sliding column 16 and the surface of the clamping block 19, the surface of the clamping block 19 is provided with a second through hole, the two through holes are jointly slidably connected with a limiting column 21, and the two ends of the limiting plate 22 are fixedly connected with the two ends of the limiting column 21, the surface of the rotating shaft 5 is fixedly connected with a second gear 23, the second gear 23 is meshed with the first gear 14, during processing, the blank 2 firstly penetrates through the first gear 14 and the opening 12 and is placed as shown in fig. 1, then the rotating shaft 5 is driven to rotate in the reverse direction through the reverse rotation of the rotary driving source 3, and the two moving plates 25 are driven to be separated from two sides of the blank 2 through the reverse rotation of the rotating shaft 5, so that the situation that when the blank 2 is produced, friction force is generated between the moving plates 25 and the side faces of the blank 2, and then the side faces of the blank 2 are easily abraded is avoided; when the rotating shaft 5 rotates reversely to drive the first gear 14 to rotate to the state shown in fig. 3, as the first gear 14 continues to rotate counterclockwise in the direction shown in fig. 3, and the moving direction of the sliding column 16 is limited by the groove wall of the radial groove 11, and the thrust of the groove wall of the arc-shaped groove 15 against the sliding column 16, the sliding column 16 moves radially along the groove wall of the radial groove 11, and the sliding column 16 moves radially to drive the two clamping blocks 19 to clamp and fix the surface of the blank 2 to the state shown in fig. 5, at this time, as the first gear 14 in fig. 5 continues to rotate counterclockwise, the sliding column 16 is driven to continuously rotate along the annular groove formed between the circular through groove 10 and the fixed disk two 9, and as the sliding column 16 continuously rotates, the clamped and fixed blank 2 is driven to continuously rotate, and simultaneously, the threading tool mechanism starts to synchronously thread both ends of the blank 2, compared with the prior art, according to the invention, after the blank 2 is clamped and fixed, the blank 2 can continuously rotate to be matched with a threading tool to carry out threading machining, the whole process is smoother and simpler, the machining efficiency is higher, the operation is quicker, and the invention can synchronously carry out threading machining on two ends of the blank 2, so that the machining efficiency is higher; after the threading is finished, the rotary driving source 3 rotates in the forward direction, after the sliding column 16 slides to the state shown in fig. 4, the sliding column 16 can move in the reverse direction along the groove wall of the radial groove 11 by using the elastic tension of the first spring 20 to be far away from the blank 2, so that the clamping block 19 is separated from the blank 2, and after the threading is finished, the clamping and fixing of the blank 2 can be automatically released by the forward rotation of the rotary driving source 3, so that an operator can take materials conveniently, the automation degree is high, and the efficiency is better.

Further, a position self-correcting mechanism is included before the blank 2 is clamped.

Further, the position self-correcting mechanism comprises two external threads 24 with opposite thread directions, the two external threads 24 are respectively arranged at two ends of the rotating shaft 5, thread grooves of the two external threads 24 are in threaded connection with moving plates 25, lower surfaces of the two moving plates 25 are in sliding connection with the upper surface of the bottom plate 1, opposite sides of the two moving plates 25 are fixedly connected with springs 26, the rotating shaft 5 rotates through the arranged springs 26 to drive the two moving plates 25 to respectively move towards two sides and move to positions without the external threads 24, the moving plates 25 cannot continue to move towards two sides due to continuous rotation of the rotating shaft 5, when the rotating shaft 5 stops rotating, the moving plates 25 can form threaded fit with the external threads 24 again by means of elastic tension of the springs 26, and when the blank 2 continuously rotates through the arrangement, the moving plate 25 can not move all the time to both sides, the occupied space area of the whole device is reduced, the structure is more reasonable, the practicability is better, the opposite ends of the two second springs 26 are fixedly connected with the fixed plates 27, the two fixed plates 27 are fixedly connected to the upper surface of the bottom plate 1, the side surface of the fixed plate I8 is provided with the arc groove 28, the surface of the limiting column 21 is sleeved with the third springs 29, the two end parts of the third springs 29 are respectively and fixedly connected with the opposite sides of the two clamping blocks 19, the rotating shaft 5 is driven to rotate in the forward direction through the forward rotation of the rotary driving source 3, the second gear 23 is driven to rotate through the forward rotation of the rotating shaft 5, the first gear 14 is driven to start in the state shown in figure 3 through the rotation of the second gear 23, the clockwise rotation of the first gear 14 is limited by the elastic force of the third springs 29, the sliding column 16 can directly slide into the arc groove 28 when rotating clockwise, and then the sliding column 16 will not move radially when the rotary driving source 3 rotates forward, so that no clamping force is generated on the blank 2, and the position of the blank 2 can be corrected as described below; rotate forward through pivot 5, drive two external screw threads 24 forward rotations, rotate forward through two external screw threads 24, drive two movable plates 25 and remove to the opposite direction, move to the opposite direction through two movable plates 25, thereby promote the both sides of stock 2 respectively, make the both ends of stock 2 treat that the portion of processing can align respectively in two car screw thread cutter mechanisms (not drawing in the picture, can refer to the position between car screw thread cutter mechanism and the stock in the file that the background art quoted), when having reduced artifical calibration stock 2's position, waste time and energy, inefficiency.

Furthermore, the opposite sides of the two clamping blocks 19 are fixedly connected with rubber cushions 30, and the abrasion of the clamping blocks 19 to the surface of the blank 2 is reduced through the arranged rubber cushions 30.

Further, the rotation drive source 3 is a servo motor.

Further, the diameter of the sliding column 16 is matched with the groove diameter of the arc groove 28, the groove diameter of the arc groove 15, the groove diameter of the radial groove 11, and the groove diameter of the annular groove formed between the circular through groove 10 and the second fixed disc 9.

Referring to fig. 1 to 5, the present invention provides a processing method: a processing method of a threading device for a U-shaped bolt convenient to process comprises the following steps:

s1: through the operation of the driving mechanism, after the blank 2 is automatically clamped and fixed, the blank 2 is driven to rotate so as to be matched with a threading tool to carry out threading machining;

s2: after the threading is finished, the clamping and fixing of the blank 2 are automatically released through the operation of the driving mechanism, and then the blank 2 is taken down.

The working principle is as follows: when the threading equipment for the U-shaped bolt convenient to process is used for processing, firstly, the blank 2 penetrates through the first gear 14 and the opening 12 and is placed as shown in figure 1, then the rotating shaft 5 is driven to rotate in the forward direction through the forward rotation of the rotating drive source 3, the second gear 23 is driven to rotate through the forward rotation of the rotating shaft 5, the first gear 14 is driven to start in the state shown in figure 3 and rotate clockwise in the direction shown, the first gear 14 rotates clockwise and is limited by the elastic force of the third spring 29, so that the sliding column 16 can directly slide into the arc groove 28 under the condition of clockwise rotation, and further, under the condition that the rotating drive source 3 rotates in the forward direction, the sliding column 16 cannot move radially, and therefore, clamping force cannot be generated on the blank 2, and the position of the blank 2 can be corrected in the following process;

the two external threads 24 are driven to rotate positively through the positive rotation of the rotating shaft 5, the two moving plates 25 are driven to move towards opposite directions through the positive rotation of the two external threads 24, and the two moving plates 25 move towards opposite directions, so that the two sides of the blank 2 are respectively pushed, parts to be processed at the two ends of the blank 2 can be respectively aligned to the two threading tool mechanisms (not shown in the figure, refer to the position between the threading tool mechanism and the blank in the document cited in the background technology), and the problems of time and labor waste and low efficiency in manual calibration of the position of the blank 2 are reduced;

after the position of the blank 2 is self-corrected, the rotating shaft 5 is driven to rotate reversely by the reverse rotation of the rotary driving source 3, and the two moving plates 25 are driven to separate from two sides of the blank 2 by the reverse rotation of the rotating shaft 5, so that the situation that the moving plates 25 generate friction with the side surfaces of the blank 2 when the blank 2 is in the following state, and the side surfaces of the blank 2 are easily abraded is avoided;

when the rotating shaft 5 rotates reversely to drive the first gear 14 to rotate to the state shown in fig. 3, as the first gear 14 continues to rotate counterclockwise in the direction shown in fig. 3, and the moving direction of the sliding column 16 is limited by the groove wall of the radial groove 11, and the thrust of the groove wall of the arc-shaped groove 15 against the sliding column 16, the sliding column 16 moves radially along the groove wall of the radial groove 11, and the sliding column 16 moves radially to drive the two clamping blocks 19 to clamp and fix the surface of the blank 2 to the state shown in fig. 5, at this time, as the first gear 14 in fig. 5 continues to rotate counterclockwise, the sliding column 16 is driven to continuously rotate along the annular groove formed between the circular through groove 10 and the fixed disk two 9, and as the sliding column 16 continuously rotates, the clamped and fixed blank 2 is driven to continuously rotate, and simultaneously, the threading tool mechanism starts to synchronously thread both ends of the blank 2, compared with the prior art, according to the invention, after the blank 2 is clamped and fixed, the blank 2 can continuously rotate to be matched with a threading tool to carry out threading machining, the whole process is smoother and simpler, the machining efficiency is higher, the operation is quicker, and the invention can synchronously carry out threading machining on two ends of the blank 2, so that the machining efficiency is higher;

after the threading is finished, the rotary driving source 3 rotates in the forward direction, after the sliding column 16 slides to the state shown in fig. 4, the sliding column 16 can move in the reverse direction along the groove wall of the radial groove 11 by using the elastic tension of the first spring 20 to be far away from the blank 2, so that the clamping block 19 is separated from the blank 2, and after the threading is finished, the clamping and fixing of the blank 2 can be automatically released by the forward rotation of the rotary driving source 3, so that an operator can take materials conveniently, the automation degree is high, and the efficiency is better.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.