CN112570821A

CN112570821A - Lathe work auxiliary device to two segmentation screw threads

Info

Publication number: CN112570821A
Application number: CN202110009638.1A
Authority: CN
Inventors: 赵文裕
Original assignee: Nanjing Wanenpin Trading Co ltd
Current assignee: Nanjing Wanenpin Trading Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-03-30

Abstract

The invention relates to the related field of threads, and discloses a turning auxiliary device for two-section threads, which comprises a thread variable pitch body, wherein a bevel gear cavity is arranged in the thread variable pitch body, the left end wall of the bevel gear cavity is communicated with an initial speed adjusting cavity, the right end wall of the bevel gear cavity is communicated with a variable speed adjusting cavity, an initial speed synchronous cavity positioned at the lower side of the initial speed adjusting cavity is arranged in the thread variable pitch body, the feeding speeds required in two-section machining can be respectively adjusted by controlling the relative positions of an adjusting wheel and a bevel gear, so that the machining requirements for different thread pitches can be met, meanwhile, the position of switching of the feeding speeds can be adjusted by adjusting the position of a trigger magnet, so that the requirements for machining threads with different lengths can be met, the electromagnet is controlled to be started by the trigger magnet, the automatic switching of the feeding speeds is realized, and the automatic machining of the threads with different, the automation degree is greatly improved, and the production quality and the production efficiency are improved.

Description

Lathe work auxiliary device to two segmentation screw threads

Technical Field

The invention relates to the related field of threads, in particular to a turning auxiliary device for two-section threads.

Background

Because production needs, there are two sections continuous different pitch's of screw thread that need on some spare parts, add to this type of screw thread through the turning at present, mostly need carry out twice processing to adjust feed speed in twice course of working, complex operation, and feed speed control is improper can lead to processing to produce the deviation, when needs carry out mass production, production efficiency is lower.

Disclosure of Invention

The invention aims to provide an auxiliary device for turning two-section type threads, which can overcome the defects in the prior art and improve the practicability of equipment.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a turning auxiliary device for two-section threads, which comprises a thread variable distance body, wherein a bevel gear cavity is arranged in the thread variable distance body, the left end wall of the bevel gear cavity is communicated with a starting speed adjusting cavity, the right end wall of the bevel gear cavity is communicated with a variable speed adjusting cavity, a starting speed synchronous cavity positioned at the lower side of the starting speed adjusting cavity is arranged in the thread variable distance body, a steering cavity positioned at the lower side of the variable speed adjusting cavity is arranged in the thread variable distance body, a driving motor positioned at the upper side of the bevel gear cavity is arranged in the thread variable distance body, the lower end surface of the driving motor is fixedly connected with a driving shaft extending downwards into the bevel gear cavity, the tail end of the lower side of the driving shaft is fixedly connected with a driving bevel gear positioned in the bevel gear cavity, and the lower end wall of the bevel gear cavity is, the tail end of the upper side of the bevel gear fixing shaft is fixedly connected with a driven bevel gear which is positioned in the bevel gear cavity and on the right side of the driving bevel gear, the driven bevel gear is connected with the driving bevel gear in a friction fit manner, the lower end wall of the initial speed adjusting cavity is connected with an initial speed output shaft which extends downwards to the inner end wall of the initial speed synchronizing cavity in a rotating fit manner, the inner spline of the initial speed output shaft is connected with an initial speed moving shaft which extends upwards to the inner end of the initial speed adjusting cavity in a matching manner, the tail end of the upper side of the initial speed moving shaft is connected with an initial speed lifting body which is positioned in the initial speed adjusting cavity and is connected with the initial speed adjusting cavity in a sliding fit manner in a rotating fit manner, the inner thread of the initial speed lifting body is connected with an initial speed threaded rod which extends upwards to the upper side of the thread variable pitch body in a matching, the initial speed moving shaft is fixedly connected with an initial speed adjusting wheel which is positioned in the initial speed adjusting cavity and is in friction fit connection with the driving bevel gear, the lower end wall of the variable speed adjusting cavity is connected with a variable speed output shaft which extends downwards into the steering cavity in a rotating matching way, the variable speed output shaft is connected with a variable speed moving shaft which extends upwards into the variable speed adjusting cavity in a matching way through an internal spline, the tail end of the upper side of the variable speed moving shaft is connected with a variable speed lifting body which is positioned in the variable speed adjusting cavity and is connected with the variable speed adjusting cavity in a sliding fit manner, the inner thread of the variable speed lifting body is connected with a variable speed threaded rod which extends upwards to the upper side of the thread pitch-variable body in a matching way, the tail end of the upper side of the variable-speed threaded rod is fixedly connected with a variable-speed turntable positioned on the upper side of the thread pitch-variable body, and the variable-speed moving shaft is fixedly connected with a variable-speed adjusting wheel which is positioned in the variable-speed adjusting cavity and is in friction fit connection with the driven bevel gear.

On the basis of the technical scheme, a variable speed cavity which is positioned at the lower side of the initial speed synchronous cavity and is positioned at the upper side of the steering cavity is arranged in the thread variable pitch body, a movable shaft cavity is communicated with the lower end wall of the variable speed cavity, an initial speed output wheel which is positioned in the initial speed synchronous cavity is fixedly connected to the initial speed output shaft, an initial speed gear shaft which extends downwards from the initial speed synchronous cavity to the variable speed cavity is connected to the upper end wall of the initial speed synchronous cavity in a rotating fit manner, an initial speed driving belt wheel which is positioned in the initial speed synchronous cavity and is positioned at the front side of the initial speed output wheel is fixedly connected to the initial speed gear shaft, an initial speed synchronous belt is connected between the initial speed driving belt wheel and the initial speed output wheel in a power fit manner, an initial speed gear which is positioned in the variable speed cavity is fixedly connected to the lower end of the lower side of the initial speed output shaft, and a, turn to chamber lower extreme inner wall normal running fit and be connected with upwards extend to turn to the directive wheel fixed axle of intracavity, the terminal fixedly connected with of directive wheel fixed axle upside is located turn to the intracavity and with the diversion band pulley of variable speed output wheel meshing, turn to chamber lower extreme inner wall normal running fit and be connected with upwards extend and run through turn to the chamber extremely the gear shaft of variable speed intracavity, fixedly connected with is located on the gear shaft turn to the intracavity and be located the variable speed drive band pulley of diversion band pulley front side, the gear drive band pulley with power fit is connected with between the diversion band pulley and turns to the hold-in range, the terminal fixedly connected with of gear shaft upside is located the gear chamber just is located the change gear of top speed gear downside.

On the basis of the technical scheme, a transmission cavity which is positioned at the upper side of the speed changing cavity is arranged in the thread variable pitch body, a sliding cavity which is positioned at the lower side of the transmission cavity and has a downward opening is arranged in the thread variable pitch body, the left end wall of the sliding cavity is communicated with a positioning cavity with a downward opening, the upper end wall of the speed changing cavity is connected with a spline shaft which extends upwards and penetrates through the transmission cavity to the upper end wall of the transmission cavity in a rotating and matching way, a spline cavity with a downward opening is arranged in the spline shaft, a movable gear shaft which extends downwards and penetrates through the speed changing cavity to the movable shaft cavity is connected in the spline cavity in a spline matching way, a tension spring is connected between the upper end surface of the movable gear shaft and the upper end wall of the spline cavity in a power matching way, and a movable gear which is positioned in the speed changing cavity, the tail end of the lower side of the movable gear shaft is fixedly connected with a movable magnet which is positioned in the movable shaft cavity and connected with the movable shaft cavity in a sliding fit mode, and the movable magnet corresponds to the variable speed electromagnet.

On the basis of the technical scheme, the spline shaft is fixedly connected with a power output wheel positioned in the transmission cavity, the upper end wall of the transmission cavity is connected with a threaded shaft which extends downwards and penetrates through the transmission cavity to the sliding cavity in a rotating and matching manner, the threaded shaft is fixedly connected with an output belt wheel which is positioned in the transmission cavity and positioned at the left side of the power output wheel, a power transmission belt is connected between the output belt wheel and the power output wheel in a power matching manner, the threaded shaft is connected with a sliding body positioned in the sliding cavity in a threaded and matching manner, the left end surface at the upper side of the sliding body is fixedly connected with a positioning magnet block, the upper end wall of the positioning cavity is connected with a positioning screw rod which extends upwards to the upper side of the threaded variable-pitch body and extends downwards to the positioning cavity in a rotating and matching manner, and the tail end of the positioning screw rod is, the screw thread is connected with and is located on the screw thread displacement body the location intracavity and with the screw thread locating piece that location chamber sliding fit connects, be equipped with the opening chamber that triggers right in the screw thread locating piece, trigger intracavity sliding fit be connected with can with the corresponding magnet piece that triggers of location magnet piece, trigger magnet piece left end face with trigger fixedly connected with trigger spring between the chamber left end wall.

The invention has the beneficial effects that: through the relative position of control regulating wheel and bevel gear, the realization is adjusted respectively with the feed rate that needs in two sections man-hour, thereby can satisfy the processing demand to different pitches, and simultaneously, position through adjustment trigger magnet, can adjust the position that feed rate switches, thereby satisfy the demand to different length thread processing, start through trigger magnet control electro-magnet, realize feed rate's automatic switch-over, thereby accomplished the automatic processing to the different pitch screw threads in both ends, great improvement degree of automation, production quality and production efficiency have been improved.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of the overall structure of a turning auxiliary device for two-step threads according to the present invention.

Fig. 2 is a schematic sectional view at a-a in fig. 1.

Fig. 3 is a schematic sectional view at B-B in fig. 2.

Fig. 4 is an enlarged schematic view of the structure at C in fig. 1.

Fig. 5 is an enlarged schematic view of the structure at D in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

Combine accompanying drawings 1-5 a lathe work auxiliary device to two segmentation screw threads, including the screw thread displacement body 23, be equipped with bevel gear chamber 38 in the screw thread displacement body 23, the intercommunication of 38 left end walls in bevel gear chamber is equipped with initial speed and

adjusts chamber

35, 38 right end walls in bevel gear chamber intercommunication is equipped with speed change regulation chamber 44, be equipped with in the screw thread displacement body 23 and be located initial speed synchronization chamber 66 of initial speed regulation chamber 35 downside, be equipped with in the screw thread displacement body 23 and be located the chamber 28 that turns to of speed change regulation chamber 44 downside, be equipped with in the screw thread displacement body 23 and be located the driving motor 39 of 38 upside in bevel gear chamber, terminal fixed connection downwardly extending of driving motor 39 to the drive shaft 42 in the bevel gear chamber 38, the terminal fixed connection of drive shaft 42 downside is located the initiative bevel gear 33 in the bevel gear chamber 38, the internal rotation fit connection of 38 lower end walls in bevel gear chamber 38 has upwards to extend to the bevel gear chamber 38 in the bevel gear chamber' s A gear fixing shaft 49, wherein a driven bevel gear 46 which is positioned in the bevel gear cavity 38 and on the right side of the drive bevel gear 33 is fixedly connected to the upper end of the bevel gear fixing shaft 49, the driven bevel gear 46 is connected with the drive bevel gear 33 in a friction fit manner, a starting speed output shaft 48 which extends downwards through the starting speed synchronizing cavity 66 to the lower end wall of the starting speed synchronizing cavity 66 is connected to the lower end wall of the starting speed adjusting cavity 35 in a rotation fit manner, a starting speed moving shaft 30 which extends upwards into the starting speed adjusting cavity 35 is connected to the starting speed output shaft 48 in a spline fit manner, a starting speed lifting body 34 which is positioned in the starting speed adjusting cavity 35 and is connected with the starting speed adjusting cavity 35 in a sliding fit manner is connected to the upper end of the starting speed moving shaft 30 in a rotation fit manner, a starting speed threaded rod 36 which extends upwards to the upper side of the threaded pitch varying body 23 is connected to the starting speed lifting, the terminal fixedly connected with in top of 36 upside of top speed threaded rod is located the top speed carousel 37 of the body 23 upside of screw thread displacement, fixedly connected with is located on the axle 30 is moved to the top speed adjust in the chamber 35 and with the top speed regulating wheel 32 that the friction fit of drive bevel gear 33 is connected, the terminal normal running fit of end wall is connected with down the speed change output shaft 51 that the chamber 44 is adjusted to the speed change, spline fit is connected with upwards extends to the speed change in the speed change output shaft 51 moves the axle 50 in the speed change regulation chamber 44, the terminal normal running fit of 50 upside of the speed change moves the axle is connected with and is located in the speed change regulation chamber 44 and with the speed change lifting body 45 that the chamber 44 sliding fit is connected is adjusted to the speed change lifting body 45 internal thread fit is connected with and upwards extends to the speed change threaded rod 43 of the body 23 upside of screw thread displacement, the terminal fixedly connected with in last of 43 of speed change threaded rod is located the speed change carousel 40 And a speed change adjusting wheel 47 which is positioned in the speed change adjusting cavity 44 and is in friction fit connection with the driven bevel gear 46 is fixedly connected to the speed change moving shaft 50.

In one embodiment, a speed change chamber 19 is provided in the pitch varying body 23 below the start speed synchronizing chamber 66 and above the steering chamber 28, a moving shaft chamber 22 is provided in communication with a lower end wall of the speed change chamber 19, a start speed output wheel 31 positioned in the start speed synchronizing chamber 66 is fixedly connected to the start speed output shaft 48, a start speed gear shaft 64 extending downward through the start speed synchronizing chamber 66 into the speed change chamber 19 is rotatably connected to an upper end wall of the start speed synchronizing chamber 66, a start speed drive pulley 63 positioned in the start speed synchronizing chamber 66 and in front of the start speed output wheel 31 is fixedly connected to the start speed gear shaft 64, a start speed synchronizing belt 65 is connected between the start speed drive pulley 63 and the start speed output wheel 31 in a power-fit manner, and a start speed gear 68 positioned in the speed change chamber 19 is fixedly connected to a lower end of the start speed gear shaft 64, the lower end of the speed change output shaft 51 is fixedly connected with a speed change output wheel 29 positioned in the steering cavity 28, a direction-changing wheel fixing shaft 70 which extends upwards into the steering cavity 28 is connected in a rotating fit mode on the lower end wall of the steering cavity 28, the tail end of the upper side of the direction-changing wheel fixing shaft 70 is fixedly connected with a direction-changing belt wheel 69 which is positioned in the steering cavity 28 and is meshed with the variable speed output wheel 29, a speed change gear shaft 21 which extends upwards through the steering cavity 28 to the speed change cavity 19 is connected in a rotating fit mode on the lower end wall of the steering cavity 28, the change gear shaft 21 is fixedly connected with a change gear driving pulley 26 which is positioned in the steering cavity 28 and is positioned at the front side of the direction-changing pulley 69, a steering synchronous belt 27 is connected between the speed change driving pulley 26 and the direction change pulley 69 in a power fit manner, the upper end of the speed changing gear shaft 21 is fixedly connected with a speed changing gear 20 which is positioned in the speed changing cavity 19 and is positioned on the lower side of the initial speed gear 68.

In addition, in one embodiment, a transmission cavity 17 located at the upper side of the speed changing cavity 19 is arranged in the threaded variable pitch body 23, a sliding cavity 16 located at the lower side of the transmission cavity 17 and having a downward opening is arranged in the threaded variable pitch body 23, the left end wall of the sliding cavity 16 is communicated with the positioning cavity 12 having a downward opening, a spline shaft 61 extending upwards and penetrating through the transmission cavity 17 to the upper end wall of the transmission cavity 17 is connected to the upper end wall of the speed changing cavity 19 in a rotating fit manner, a spline cavity 60 having a downward opening is arranged in the spline cavity 61, a movable gear shaft 67 extending downwards and penetrating through the speed changing cavity 19 to the movable shaft cavity 22 is connected to the spline cavity 60 in a spline fit manner, a tension spring 59 is connected between the upper end surface of the movable gear shaft 67 and the upper end wall of the spline cavity 60 in a power fit manner, and a movable gear 58 located in the speed changing cavity 19 and capable of meshing with the initial speed gear 68 and the speed changing gear 20, the tail end of the lower side of the movable gear shaft 67 is fixedly connected with a movable magnet 24 which is positioned in the movable shaft cavity 22 and is in sliding fit connection with the movable shaft cavity 22, and the movable magnet 24 corresponds to the variable speed electromagnet 25.

In addition, in one embodiment, a power output wheel 62 located in the transmission cavity 17 is fixedly connected to the spline shaft 61, a threaded shaft 13 extending downward through the transmission cavity 17 to the sliding cavity 16 is connected to the upper end wall of the transmission cavity 17 in a rotationally-matched manner, an output pulley 14 located in the transmission cavity 17 and located on the left side of the power output wheel 62 is fixedly connected to the threaded shaft 13, a power transmission belt 18 is connected between the output pulley 14 and the power output wheel 62 in a rotationally-matched manner, a sliding body 11 located in the sliding cavity 16 is connected to the threaded shaft 13 in a rotationally-matched manner, a positioning magnet block 57 is fixedly connected to the left end face of the upper side of the sliding body 11, a positioning screw 53 extending upward to the upper side of the threaded variable distance body 23 and downward to the positioning cavity 12 is connected to the upper end wall of the positioning cavity 12 in a rotationally-matched manner, the tail end of the upper side of the positioning screw rod 53 is fixedly connected with a positioning rotary disc 15 positioned on the upper side of the thread pitch variable body 23, the thread pitch variable body 23 is connected with a thread positioning block 52 positioned in the positioning cavity 12 in a threaded matching manner and connected with the positioning cavity 12 in a sliding matching manner, a trigger cavity 55 with a rightward opening is arranged in the thread positioning block 52, a trigger magnet block 56 capable of corresponding to the positioning magnet block 57 is connected in the trigger cavity 55 in a sliding matching manner, and a trigger spring 54 is fixedly connected between the left end surface of the trigger magnet block 56 and the left end wall of the trigger cavity 55.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1-5, when the device of the present invention is in the initial state, the trigger spring 54 is in the relaxed state, the shift electromagnet 25 is turned off, the tension spring 59 is in the relaxed state, and the moving gear 58 is engaged with the initial gear 68;

sequence of mechanical actions of the whole device:

when the lathe starts to work, a part to be machined is fixed by the sliding body 11 and is abutted against a turning tool, the positioning turntable 15 is firstly rotated, the positioning turntable 15 rotates to drive the positioning screw rod 53 to rotate, the positioning screw rod 53 rotates to drive the thread positioning block 52 to slide up and down through thread matching, the thread positioning block 52 slides up and down to drive the trigger magnet block 56 to slide up and down, the moving distance of the trigger magnet block 56 is the length of the subsequent thread machining, when the trigger magnet block 56 moves to a proper position, the positioning turntable 15 stops rotating, and at the moment, the thread positioning block 52 is static;

simultaneously, the initial speed turntable 37 is rotated, the initial speed turntable 37 rotates to drive the initial speed threaded rod 36 to rotate, the initial speed threaded rod 36 rotates to drive the initial speed lifting body 34 to slide upwards along the initial speed adjusting cavity 35 through thread matching, the initial speed lifting body 34 slides upwards to drive the initial speed moving shaft 30 to slide upwards, the initial speed moving shaft 30 slides upwards to drive the initial speed adjusting wheel 32 to slide upwards, when the initial speed adjusting wheel 32 slides to a preset position, the initial speed turntable 37 stops rotating, the initial speed adjusting wheel 32 is static, the setting of a section of feeding speed is completed, at this time, the speed change turntable 40 is rotated, the speed change turntable 40 rotates to drive the speed change adjusting wheel 41 to rotate, the speed change lifting body 45 is driven to slide upwards along the speed change adjusting cavity 44 through thread matching, the speed change lifting body 45 slides upwards to drive the speed change moving shaft 50 to slide upwards, the speed change moving shaft 50 slides upwards to drive the speed change adjusting wheel, when the variable speed regulating wheel 47 slides upwards to a preset position, the variable speed turntable 40 stops rotating, the variable speed regulating wheel 47 is still, and the setting of the feeding speed of the second section is completed;

after the two feeding speeds are set, the driving motor 39 is started to drive the driving shaft 42 to rotate in the forward direction, the driving shaft 42 rotates in the forward direction to drive the driving bevel gear 33 to rotate in the forward direction, the driving bevel gear 33 rotates to drive the initial speed adjusting wheel 32 to rotate in the forward direction, the initial speed adjusting wheel 32 rotates to drive the initial speed moving shaft 30 to rotate in the forward direction, the initial speed moving shaft 30 rotates in the forward direction to drive the initial speed output shaft 48 to rotate in the forward direction through spline fit, the initial speed output shaft 48 rotates in the forward direction to drive the initial speed output wheel 31 to rotate in the forward direction, the initial speed output wheel 31 rotates in the forward direction to drive the initial speed driving belt wheel 63 to rotate in the forward direction through the initial speed synchronous belt 65, the initial speed driving belt wheel 63 rotates in the forward direction to drive the initial speed gear shaft 64 to rotate in the forward direction to drive, the spline shaft 61 rotates positively to drive the power output wheel 62 to rotate positively, the power output wheel 62 rotates positively to drive the output belt wheel 14 to rotate positively through the power transmission belt 18, the output belt wheel 14 rotates positively to drive the threaded shaft 13 to rotate positively, the threaded shaft 13 rotates positively to drive the sliding body 11 to slide downwards through thread fit, the sliding body 11 slides downwards to drive the machined part to slide downwards, and meanwhile, the chuck is used for clamping the thread pitch-variable body 23 and rotating, so that the machining of a first section of threads is realized;

meanwhile, the driving bevel gear 33 rotates to drive the driven bevel gear 46 to rotate reversely, the driven bevel gear 46 rotates reversely to drive the speed change adjusting wheel 47 to rotate reversely, the speed change adjusting wheel 47 rotates reversely to drive the speed change moving shaft 50 to rotate reversely, the speed change moving shaft 50 rotates reversely to drive the speed change output shaft 51 to rotate reversely through spline fit, the speed change output shaft 51 rotates reversely to drive the speed change output wheel 29 to rotate reversely, the speed change output wheel 29 rotates reversely to drive the direction change belt wheel 69 to rotate forwardly through meshing, the direction change belt wheel 69 rotates forwardly to drive the speed change driving belt wheel 26 to rotate forwardly through the steering synchronous belt 27, the speed change driving belt wheel 26 rotates forwardly to drive the speed change gear;

meanwhile, the slide body 11 slides downwards to drive the positioning magnet block 57 to slide downwards, when the positioning magnet block 57 slides downwards to correspond to the trigger magnet block 56, the positioning magnet block 57 attracts the trigger magnet block 56 to slide rightwards against the pulling force of the trigger spring 54, the trigger magnet block 56 slides rightwards to abut against the positioning magnet block 57, the shift electromagnet 25 is started, the shift electromagnet 25 starts to attract the moving magnet 24 to slide downwards, the moving magnet 24 slides downwards to drive the moving gear shaft 67 to slide downwards against the pulling force of the pulling spring 59, the moving gear shaft 67 slides downwards to drive the moving gear 58 to slide downwards to be meshed with the shift gear 20, at this time, the thread processing of the first section is completed, the shift gear 20 rotates forwards to drive the moving gear 58 to rotate forwards, the moving gear 58 rotates forwards to drive the slide body 11 to slide downwards, the thread processing of the second section is started, at this time, the trigger magnet block 56 is separated from the positioning magnet block 57, the triggering magnet block 56 which loses the attraction of the positioning magnet block 57 slides to the left to reset under the tension of the triggering spring 54;

after the second section of thread is processed, stopping the rotation of the chuck, turning off the driving motor 39, turning off the speed-changing electromagnet 25, stopping the rotation of the driving shaft 42, stopping the rotation of the output belt wheel 14, making the sliding body 11 still, removing the processed part, simultaneously stopping the speed-changing electromagnet 25, making the moving magnet 24 lose the suction force of the speed-changing electromagnet 25 and slide upwards under the pulling force of the tension spring 59 until the speed-changing electromagnet returns, returning the moving magnet 24 to drive the moving gear shaft 67 to slide upwards until the speed-changing electromagnet returns, returning the moving gear shaft 67 to drive the moving gear 58 to slide upwards until the speed-changing electromagnet returns, at this time, the moving gear 58 is meshed with the initial speed gear 68, after the workpiece is removed, reversing the driving motor 39, reversing the driving shaft 42, the driving shaft 42 reversing the output belt wheel 14, reversing the output belt wheel 14 to drive the sliding body 11 to, the slide body 11 is reset to drive the positioning magnet block 57 to reset, at this time, the driving motor 39 is turned off, and the driving motor 39 is turned off, so that the speed-changing electromagnet 25 cannot be triggered, and thus, two sections of continuous machining with different tooth pitches of the machined part are completed.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a lathe work auxiliary device to two segmentation screw threads, includes the screw thread displacement body, its characterized in that: a bevel gear cavity is arranged in the thread variable distance body, an initial speed adjusting cavity is communicated with the left end wall of the bevel gear cavity, a variable speed adjusting cavity is communicated with the right end wall of the bevel gear cavity, an initial speed synchronizing cavity positioned on the lower side of the initial speed adjusting cavity is arranged in the thread variable distance body, a steering cavity positioned on the lower side of the variable speed adjusting cavity is arranged in the thread variable distance body, a driving motor positioned on the upper side of the bevel gear cavity is arranged in the thread variable distance body, the lower end face of the driving motor is fixedly connected with a driving shaft extending downwards into the bevel gear cavity, the tail end of the lower side of the driving shaft is fixedly connected with a driving bevel gear positioned in the bevel gear cavity, a bevel gear fixing shaft extending upwards into the bevel gear cavity is connected with the lower end wall of the bevel gear cavity in a matched manner, and a driven bevel gear positioned, the driven bevel gear is connected with the driving bevel gear in a friction fit manner, the lower end wall of the initial speed adjusting cavity is connected with an initial speed output shaft which extends downwards to penetrate through the initial speed synchronizing cavity to the lower end wall of the initial speed synchronizing cavity in a rotating fit manner, the inner spline of the initial speed output shaft is connected with an initial speed moving shaft which extends upwards to the initial speed adjusting cavity in a matching manner, the tail end of the upper side of the initial speed moving shaft is connected with an initial speed lifting body which is positioned in the initial speed adjusting cavity and is in sliding fit connection with the initial speed adjusting cavity in a rotating fit manner, the inner thread of the initial speed lifting body is connected with an initial speed threaded rod which extends upwards to the upper side of the thread variable pitch body in a matching manner, the tail end of the upper side of the initial speed threaded rod is fixedly connected with an initial speed turntable positioned on the upper side of the thread variable pitch body, and the initial speed adjusting wheel which is positioned in the, the variable speed is adjusted the chamber lower extreme wall normal running fit and is connected with downwardly extending turn to the variable speed output shaft of intracavity, spline fit connection in the variable speed output shaft upwards extends to the variable speed of variable speed regulation intracavity removes the axle, the terminal normal running fit of variable speed removal epaxial side is connected with and is located the variable speed is adjusted the intracavity and with the variable speed elevator body that variable speed regulation chamber sliding fit connects, the internal screw-thread fit of variable speed elevator is connected with and upwards extends to the variable speed threaded rod of screw thread displacement body upside, the terminal fixedly connected with of variable speed threaded rod upside is located the variable speed carousel of screw thread displacement body upside, the epaxial fixedly connected with of variable speed removal is located the variable speed regulation intracavity and with the variable speed regulating wheel that driven bevel gear friction fit connects.

2. The turning auxiliary device for two-segment threads according to claim 1, wherein: the variable-pitch thread body is internally provided with a variable-speed cavity which is positioned at the lower side of the initial speed synchronous cavity and at the upper side of the steering cavity, the lower end wall of the variable-speed cavity is communicated with a movable shaft cavity, the initial speed output shaft is fixedly connected with an initial speed output wheel which is positioned in the initial speed synchronous cavity, the upper end wall of the initial speed synchronous cavity is connected with an initial speed gear shaft which extends downwards and penetrates through the initial speed synchronous cavity to the variable-speed cavity in a rotating and matching way, the initial speed gear shaft is fixedly connected with an initial speed driving belt wheel which is positioned in the initial speed synchronous cavity and at the front side of the initial speed output wheel, the initial speed driving belt wheel and the initial speed output wheel are connected with an initial speed synchronous belt in a power matching way, the lower end of the initial speed gear shaft is fixedly connected with an initial speed gear which is positioned in the variable-speed cavity, and the, turn to chamber lower extreme inner wall normal running fit and be connected with upwards extend to turn to the directive wheel fixed axle of intracavity, the terminal fixedly connected with of directive wheel fixed axle upside is located turn to the intracavity and with the diversion band pulley of variable speed output wheel meshing, turn to chamber lower extreme inner wall normal running fit and be connected with upwards extend and run through turn to the chamber extremely the gear shaft of variable speed intracavity, fixedly connected with is located on the gear shaft turn to the intracavity and be located the variable speed drive band pulley of diversion band pulley front side, the gear drive band pulley with power fit is connected with between the diversion band pulley and turns to the hold-in range, the terminal fixedly connected with of gear shaft upside is located the gear chamber just is located the change gear of top speed gear downside.

3. The turning auxiliary device for two-segment threads according to claim 2, wherein: the internal being equipped with of screw thread displacement is located the transmission chamber of variable speed chamber upside, the internal being equipped with of screw thread displacement is located transmission chamber downside and opening decurrent slip chamber, slip chamber left end wall intercommunication is equipped with opening decurrent location chamber, variable speed chamber upper end wall normal running fit is connected with and upwards extends to run through transmission chamber extremely integral key shaft in the transmission chamber upper end wall, be equipped with opening decurrent spline chamber in the integral key shaft, spline intracavity spline fit is connected with downwardly extending to run through the variable speed chamber extremely remove the removal gear shaft in the axle chamber, remove gear shaft up end with power fit is connected with tension spring between the spline chamber upper end wall, be located fixedly connected with on the removal gear shaft the variable speed intracavity and can with the removal gear of variable speed gear meshing, remove the terminal fixedly connected with of gear shaft downside remove the axle intracavity and with remove axle chamber sliding fit and connect The moving magnet corresponds to the variable speed electromagnet.

4. The turning auxiliary device for two-segment threads according to claim 3, wherein: the power output wheel is fixedly connected to the spline shaft and located in the transmission cavity, the upper end wall of the transmission cavity is connected with a threaded shaft which extends downwards and penetrates through the transmission cavity to the sliding cavity in a rotating fit mode, the threaded shaft is fixedly connected with an output belt wheel which is located in the transmission cavity and located on the left side of the power output wheel in a rotating fit mode, the output belt wheel and the power output wheel are connected with a power transmission belt in a power fit mode, the threaded shaft is connected with a sliding body which is located in the sliding cavity in a threaded fit mode, the left end face of the upper side of the sliding body is fixedly connected with a positioning magnet block, the upper end wall of the positioning cavity is connected with a positioning screw rod which extends upwards to the upper side of the threaded variable-pitch body and extends downwards to the inside of the positioning cavity in a rotating fit mode, and the tail, the screw thread is connected with and is located on the screw thread displacement body the location intracavity and with the screw thread locating piece that location chamber sliding fit connects, be equipped with the opening chamber that triggers right in the screw thread locating piece, trigger intracavity sliding fit be connected with can with the corresponding magnet piece that triggers of location magnet piece, trigger magnet piece left end face with trigger fixedly connected with trigger spring between the chamber left end wall.