CN115255044A

CN115255044A - Lead screw straightening device

Info

Publication number: CN115255044A
Application number: CN202211189995.1A
Authority: CN
Inventors: 顾来法; 邬华东; 邬瑞权; 何良伟; 邬宁宁; 李孝宁
Original assignee: Ningbo Shuanglin Automobile Parts Co ltd
Current assignee: Ningbo Shuanglin Automobile Parts Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2022-11-01
Anticipated expiration: 2042-09-28
Also published as: CN115255044B

Abstract

The application discloses lead screw coalignment, includes: a base; the fixed seat is arranged at the rear end of the base, and a gear box of the seat driver is suitable for being fixedly placed on the fixed seat; the rotating seat is arranged at the front end of the base, a screw rod of the seat driver extends forwards, and the screw rod is suitable for being placed on the rotating seat in a rotating mode; the driving assembly is suitable for being connected with the gear box and driving the screw rod to rotate through the gear box; the limiting assembly is suitable for acting on the gear box and limiting the gear box to jump in the vertical direction; the measuring assembly is suitable for displaying the straightness accuracy parameters of the screw rod when the screw rod rotates; a correction assembly adapted to act on the lead screw and change the straightness of the lead screw. The device has the advantages of integration of detection and alignment, high efficiency and high precision.

Description

Lead screw straightening device

Technical Field

The application relates to the field of automobile part production equipment, in particular to a screw rod straightening device of a seat driver.

Background

A Horizontal Driver (HDM) of a vehicle seat is one of the key moving parts of a vehicle seat position adjustment system. Commonly used car seat driver generally includes gear box, lead screw and nut component, sets up worm gear in the gear box, and the motor realizes the lead screw rotation with the lead screw cooperation after slowing down through the gear box, and nut component fixed connection seat sets up on the lead screw, and the lead screw rotates and is used for driving nut component together with seat linear displacement. With the increasing improvement of the living standard of people and the rapid development of new energy automobiles, the requirements of people on the comfort and the functionality of automobile seats are higher and higher. The straightness of the screw rod directly influences the running smoothness of the automobile seat driver, the straightness of the screw rod needs to be detected in the production and assembly processes, and the screw rod which does not meet the straightness requirement is straightened. The problems of low working efficiency, low precision and the like exist in the detection and the straightening of the straightness of the screw rod at present.

Therefore, it is an urgent need for those skilled in the art to solve the above-mentioned problems by improving the conventional screw straightness measuring device and straightening device.

Disclosure of Invention

An aim at of this application provides a collection detects, alignment in an organic whole, and efficient, the lead screw coalignment that the precision is high.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: a lead screw straightening device, comprising:

a base;

the fixed seat is arranged at the rear end of the base, and a gear box of the seat driver is suitable for being fixedly placed on the fixed seat;

the rotating seat is arranged at the front end of the base, a screw rod of the seat driver extends forwards, and the screw rod is suitable for being placed on the rotating seat in a rotating mode;

the driving assembly is suitable for being connected with the gear box and driving the screw rod to rotate through the gear box;

the limiting assembly is suitable for acting on the gear box and limiting the gear box to jump in the vertical direction;

the measuring component is suitable for displaying the straightness accuracy parameters of the screw rod when the screw rod rotates;

a correction assembly adapted to act on the lead screw and change the straightness of the lead screw.

Further, the driving assembly comprises a traversing seat, a driving shaft, a power source and a sliding rail, the driving shaft is rotatably arranged on the traversing seat, the power source is suitable for driving the driving shaft to rotate, the sliding rail is fixedly arranged on the base along the left-right direction, and the traversing seat is slidably arranged on the sliding rail along the left-right direction; when the transverse moving seat slides along the left and right directions, the driving shaft is suitable for being connected with or separated from the gear box.

Furthermore, the driving assembly further comprises a return spring and a stop block, the stop block is fixedly arranged on the base, the return spring is arranged between the transverse moving seat and the stop block along the left-right direction, and the return spring is suitable for forcing the transverse moving seat to slide towards the direction of the driving shaft connected with the gear box.

Furthermore, the limiting assembly is a vertical quick clamp which is arranged on the fixed seat and is suitable for pressing and fixing the gear box along the vertical direction.

Furthermore, the limiting assembly is a pressing linkage mechanism, the pressing linkage mechanism comprises a lifting seat, a pressing plate and a lock, the lifting seat is fixedly arranged on the fixed seat, the lifting seat is arranged around the gear box in a clearance manner, the pressing plate is hinged to the lifting seat, the lock is arranged on the lifting seat, and the lock is positioned on the opposite side of the driving assembly; when the pressing plate overturns towards one side, the pressing plate is suitable for covering and fixing the gear box, and the pressing plate is suitable for entering the lock, so that the gear box keeps a locked state, and when the pressing plate overturns towards the other side, the pressing plate is separated from the upper part of the gear box and is suitable for pushing the transverse moving seat to slide towards the direction that the driving shaft is separated from the gear box, so that the gear box keeps an unlocked state.

Furthermore, an inclined sliding surface is arranged on the transverse moving seat, the lower end of the inclined sliding surface is smoothly connected with a vertical surface, and a lock rod extends out of the pressing plate; when the pressing plate is turned to the other side, the locking rod is suitable for abutting against the inclined sliding surface and sliding downwards from top to bottom, so that the transverse moving seat is pushed to slide towards the direction that the driving shaft is separated from the gear box until the pressing plate is turned to the horizontal position, the locking rod enters the vertical surface, and at the moment, the transverse moving seat and the pressing plate are kept in a locking state under the action of the reset spring.

Furthermore, a lock rod extends out of the pressure plate, the lock comprises a lock seat, an inclined slide block and a locking spring, the lock seat is fixedly arranged on the lifting seat, the inclined slide block is arranged on the lock seat in a sliding mode along the left-right direction, the locking spring is arranged between the lock seat and the inclined slide block and forces the inclined slide block to slide towards one side of the pressure plate, and a lock hole is formed between the lock seat and the inclined slide block; when the clamp plate overturns to one side, the locking lever is suitable for contradicting the oblique slider and from last down sliding, and then promote the oblique slider is in a reverse direction the clamp plate slides, until the clamp plate upset to horizontal position, the locking lever breaks away from the oblique slider and gets into the lockhole, the slider restriction to one side this moment the locking lever breaks away from the lockhole makes the clamp plate lid closes fixedly the gear box.

Furthermore, the measuring assembly comprises an instrument seat and a plurality of dial indicators, the instrument seat is fixedly arranged on the base, the dial indicators are fixedly arranged on the instrument seat along the vertical direction, and the dial indicators are arranged at intervals along the length direction of the screw rod; the dial indicator is suitable for abutting against the lower portion of the screw rod, and when the screw rod rotates, the dial indicator is suitable for displaying the offset variation of each position of the screw rod.

Furthermore, the correcting assembly comprises a hinged seat, an operating handle, a pressing block and a buffer cushion, the hinged seat is fixedly arranged on the base, the operating handle is hinged on the hinged seat, the pressing block is hinged on the operating handle and extends downwards, and the buffer cushion is fixedly arranged below the pressing block; the buffer pad is suitable for propping against the upper part of the screw rod, and the operating handle is rotated to drive the pressing block to press the screw rod from top to bottom.

Furthermore, a fixing groove is formed in the fixing seat, the gear box is suitable for being embedded into the fixing groove to be placed, and the fixing groove is suitable for limiting displacement of the gear box along the left-right direction; a limiting groove is further formed in the fixing groove, the convex block of the gear box is suitable for being embedded into the limiting groove, and the limiting groove is suitable for limiting the displacement of the gear box along the front-back direction;

the rotary seat is provided with two rollers in a rotating mode, the two rollers are arranged in the left-right direction, the rotating shafts of the two rollers extend in the front-back direction, and the screw rod is suitable for contacting the two rollers to rotate.

Compared with the prior art, the beneficial effect of this application lies in: in the process of processing the screw rod, certain deflection is generated, namely the middle position of the screw rod is bent and protruded towards one side. Therefore, the present embodiment specifically detects the bending direction and the bending degree of the intermediate position of the screw, and corrects the intermediate position of the screw according to the detection result. The specific process is as follows: firstly, in this embodiment, the seat driver is positioned by the fixed seat, the rotating seat and the limiting assembly, specifically, the gear box is subjected to omnibearing limiting fixation, and the screw rod is subjected to limiting rotation at two ends (that is, two ends are respectively connected with the gear box and the rotating seat in a rotating manner); then, the driving assembly is connected with the gear box and rotates the lead screw, so that the measuring assembly detects the bending direction and the bending degree of the lead screw; then, according to the detection result, enabling one bent side to face the correction assembly, and operating the correction assembly to prop the lead screw to correct the other bent side; and repeating the detection and correction steps until the straightness of the screw rod meets the design requirement. Therefore, the screw rod straightening device integrates the functions of detection and straightening, and the detection and the straightening can be synchronously carried out or repeatedly carried out; obviously, the alignment efficiency can be improved by synchronous operation, and the alignment accuracy can be improved by repeated operation.

Drawings

FIG. 1 is a perspective view of a seat actuator that can be straightened using a preferred embodiment of the present application.

Fig. 2 is a perspective view (driving shaft connecting gear box state) according to a preferred embodiment of the present application, and identifies six directions of front, rear, left, right, up, and down.

Fig. 3 is a top view of fig. 2 in accordance with a preferred embodiment of the present application.

Fig. 4 is a schematic perspective view (drive shaft off gear box) according to a preferred embodiment of the present application.

FIG. 5 is a top view of FIG. 4 in accordance with a preferred embodiment of the present application.

FIG. 6 is an enlarged view at A of FIG. 3 according to a preferred embodiment of the present application.

FIG. 7 is a perspective view of a preferred embodiment of a rectification assembly according to the present application.

Fig. 8 is a perspective view of a drive assembly according to a preferred embodiment of the present application.

Fig. 9 is a perspective view of a preferred embodiment of the spacing assembly in a compression linkage configuration (drive shaft coupled to gearbox).

FIG. 10 is a top view of FIG. 9 in accordance with a preferred embodiment of the present application.

FIG. 11 is a cross-sectional view taken along the line B-B in FIG. 10, in accordance with a preferred embodiment of the present application.

FIG. 12 is an enlarged view at C of FIG. 11 in accordance with a preferred embodiment of the present application.

FIG. 13 is a perspective view of a preferred embodiment of a spacing assembly employing a compression linkage (with the drive shaft disengaged from the gear box) according to the present application.

FIG. 14 is a top view of FIG. 13 in accordance with a preferred embodiment of the present application.

FIG. 15 is a cross-sectional view taken along direction D-D of FIG. 14 in accordance with a preferred embodiment of the present application.

FIG. 16 is an enlarged view at E of FIG. 15 in accordance with a preferred embodiment of the present application.

Fig. 17 is a perspective view (locked state) of the stitching linkage in accordance with a preferred embodiment of the present application.

Fig. 18 is a perspective view (unlocked state) of the stitching linkage in accordance with a preferred embodiment of the present application.

FIG. 19 is a schematic view of the arrangement of the ramp and vertical surfaces in a preferred embodiment according to the present application.

Figure 20 is a perspective view of a lock according to a preferred embodiment of the present application.

Figure 21 is a half sectional view of a lock according to a preferred embodiment of the present application (locked state).

Figure 22 is a half sectional view of a lock according to a preferred embodiment of the present application (unlocked state).

In the figure: 100. a gear case; 101. a bump; 102. a square hole; 200. a screw rod; 1. a base; 2. a fixed seat; 21. fixing grooves; 22. a limiting groove; 3. a rotating seat; 31. a roller; 4. a drive assembly; 41. a traversing seat; 411. a sloping slide surface; 412. a vertical plane; 42. a drive shaft; 43. a power source; 44. a slide rail; 45. a return spring; 46. a stopper; 47. a clamping block; 5. a limiting component; 50. vertical quick clamp; 51. lifting the seat; 52. pressing a plate; 521. a lock lever; 522. an auxiliary plate; 523. an elastic pad; 53. a lock; 530. a lock hole; 531. a lock seat; 532. an inclined slide block; 533. a locking spring; 534. a push rod; 6. a measurement assembly; 61. an instrument base; 62. a dial indicator; 7. a correction component; 71. a hinged seat; 72. an operating handle; 73. briquetting; 74. a cushion pad.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the orientation words, such as the terms "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship of the drawings, and are only for the convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1, the conventional seat driver includes a gear box 100 and a screw rod 200, the gear box 100 includes a box body, a worm wheel and a worm, wherein two sides of the box body are provided with a protrusion 101 for limiting when being mounted on a vehicle, and the worm is provided with a square hole 102 for connecting a driving motor. In the present application, it is necessary to detect the straightness of the screw rod 200, and straighten the screw rod 200 according to the detection result. Based on above-mentioned purpose, this application has designed lead screw coalignment, and the concrete structure is as follows:

as shown in fig. 2 to 22, a preferred embodiment of the present application includes:

base 1, base 1 are as mounting substrate for this device becomes a whole, convenient transport.

The fixing seat 2 is installed at the rear end of the base 1, and the gear box 100 of the seat driver is suitable for being fixedly placed on the fixing seat 2.

The seat driver comprises a rotating seat 3, wherein the rotating seat 3 is installed at the front end of a base 1, a screw rod 200 of the seat driver extends forwards, and the screw rod 200 is suitable for being placed on the rotating seat 3 in a rotating mode.

And the driving assembly 4 is suitable for being connected with the gearbox 100 and driving the screw rod 200 to rotate through the gearbox 100.

And the limiting assembly 5 is suitable for acting on the gearbox 100 and limiting the bounce of the gearbox 100 in the up-down direction.

And the measuring assembly 6 is used for displaying the straightness parameters of the screw rod 200 when the screw rod 200 rotates, and the measuring assembly 6 is used for displaying the straightness parameters of the screw rod 200.

And the correcting assembly 7, wherein the correcting assembly 7 is suitable for acting on the screw rod 200 and changing the straightness of the screw rod 200.

It is known that the lead screw 200 generates a certain deflection during the process, i.e. the middle position of the lead screw 200 is bent and protruded to one side. Therefore, the present embodiment specifically detects the bending direction and the bending degree of the middle position of the screw rod 200, and corrects the middle position of the screw rod 200 according to the detection result. The specific process is as follows:

firstly, in the embodiment, the seat driver is positioned by the fixed seat 2, the rotating seat 3 and the limiting component 5, specifically, the gear box 100 is limited and fixed in all directions, and the screw rod 200 is limited and rotated at two ends (that is, two ends are respectively connected with the gear box 100 and the rotating seat 3 in a rotating manner); then, the driving assembly 4 is connected with the gear box 100 and rotates the screw rod 200, so that the measuring assembly 6 detects the bending direction and the bending degree of the screw rod 200; then, according to the detection result, the bent side faces the correction assembly 7, and the correction assembly 7 is operated to collide the screw rod 200 to correct the bent side; and repeating the detection and correction steps until the straightness of the screw rod 200 meets the design requirement.

The gear box 100 carries out limiting in the front direction, the rear direction, the left direction, the right direction, the upper direction and the lower direction through the fixed seat 2 and the limiting component 5. As shown in fig. 6, the fixing base 2 is provided with a fixing groove 21, the gear box 100 is suitable for being embedded into the fixing groove 21, and the fixing groove 21 is suitable for limiting the displacement of the gear box 100 along the left-right direction; a limiting groove 22 is further formed in the fixing groove 21, the protruding block 101 of the gear box 100 is suitable for being embedded into the limiting groove 22, and the limiting groove 22 is suitable for limiting displacement of the gear box 100 along the front-back direction. As shown in fig. 2 to 6, the limiting assembly 5 of the present embodiment employs a vertical type quick clamp 50 for limiting the displacement of the gear housing 100 in the up-down direction. It should be noted that the specific structure and operation principle of the vertical quick clamp 50 are well known to those skilled in the art, and therefore, are not specifically described in the present embodiment, but this does not prevent the technical features from being implied by the present application.

One end of the screw rod 200 is rotatably connected to the gear box 100, and the other end is rotatably placed on the rotary base 3. As shown in fig. 2 to 5, two rollers 31 are rotatably disposed on the rotating base 3, the two rollers 31 are arranged in the left-right direction, the rotating shafts of the two rollers 31 extend in the front-rear direction, and the screw rod 200 is adapted to contact the two rollers 31 for rotation.

The driving component 4 needs to be connected with the square hole 102 formed on the inlet and outlet worm, so that the driving component 4 can move along the left and right direction. As shown in fig. 8, the driving assembly 4 of the present embodiment includes a traverse seat 41, a driving shaft 42, a power source 43, a sliding rail 44, a return spring 45 and a stopper 46, wherein the driving shaft 42 is rotatably disposed on the traverse seat 41, the power source 43 is adapted to drive the driving shaft 42 to rotate, the sliding rail 44 is fixedly disposed on the base 1 along the left-right direction, the traverse seat 41 is slidably disposed on the sliding rail 44 along the left-right direction, the stopper 46 is fixedly disposed on the base 1, and the return spring 45 is disposed between the traverse seat 41 and the stopper 46 along the left-right direction; when the traverse-moving seat 41 slides in the left-right direction, the driving shaft 42 is adapted to be coupled to or decoupled from the gear box 100, and the return spring 45 is adapted to force the traverse-moving seat 41 to slide in a direction in which the driving shaft 42 is coupled to the gear box 100. In this embodiment, the traverse seat 41 is slidably connected to the gear box 100 leftward and is slidably disconnected from the gear box 100 rightward, and the return spring 45 urges the traverse seat 41 to slide leftward.

It should be noted that the power source 43 of the present embodiment adopts a manual crank structure, and during the alignment process, an operator can operate the manual crank to rotate forward, rotate backward, and stop at any time, so as to quickly determine the bending direction and the bending degree of the screw rod 200 by observing the measuring assembly 6, and to direct the bending side toward the correcting assembly 7, and to perform the correction by the correcting assembly 7. It can be understood that, during the alignment process, the operator operates the driving assembly 4 with the left hand to rotate the lead screw 200, the information on the measuring assembly 6 is observed by eyes, and operates the correcting assembly 7 with the right hand to correct the lead screw 200, and the three actions can be performed synergistically and efficiently. Therefore, the power source 43 is driven by a manual driving method, which has higher flexibility and accuracy than a motor driving method.

In addition, in order to further limit the position of the gear box 100, as shown in fig. 6, a clamping block 47 is further fixedly arranged on the traverse mount 41, when the driving shaft 42 is connected with the gear box 100, the clamping block 47 is suitable for clamping and fixing the gear box 100, and the other projection 101 of the gear box 100 is suitable for being embedded into the clamping block 47.

As is well known, the deflection of the screw rod 200 is usually small, and a relatively precise instrument is required to measure the deflection, so as shown in fig. 2 to 5, the measurement assembly 6 of the present embodiment includes an instrument base 61 and a dial indicator 62, the instrument base 61 is fixedly arranged on the base 1, the dial indicator 62 is fixedly arranged on the instrument base 61 along the up-down direction, and the dial indicator 62 has a plurality of dial indicators 62, and the dial indicators 62 are arranged at intervals along the length direction of the screw rod 200; the dial indicator 62 is suitable for abutting against the lower portion of the screw rod 200, and when the screw rod 200 rotates, the dial indicator 62 is suitable for displaying the offset variation of each position of the screw rod 200. It can be understood that when the screw rod 200 is rotated, if the screw rod 200 is straight, the reading of the dial indicator 62 will not change, and if the screw rod 200 is bent, the reading of the dial indicator 62 will change, and according to the time of the maximum value or the minimum value of the reading, the bending direction of the screw rod 200 can be determined, and then according to the difference between the maximum value and the minimum value of the reading, the bending degree of the screw rod 200 can be determined. Further, the screw rod 200 can be rotated to a proper position and corrected by proper force.

The measuring assembly 6 of the present embodiment employs two gauge seats 61 and four dial indicators 62, and the dial indicators 62 can be adjusted in position on the gauge seats 61 along the up-down direction, so as to adapt to the lead screws 200 with different thicknesses.

Based on the underlying structure of the measuring component 6, the correcting component 7 of the present embodiment adopts an overlying structure, specifically, as shown in fig. 7, the correcting component 7 of the present embodiment includes a hinged seat 71, an operating handle 72, a pressing block 73 and a cushion pad 74, the hinged seat 71 is fixedly disposed on the base 1, the operating handle 72 is hinged on the hinged seat 71, the pressing block 73 is hinged on the operating handle 72 and extends downward, and the cushion pad 74 is fixedly disposed below the pressing block 73; the cushion pad 74 is suitable for abutting against the upper part of the screw rod 200, and the rotating operation handle 72 is suitable for driving the pressing block 73 to press the screw rod 200 from top to bottom. The cushion pad 74 is made of an elastic material to avoid crushing the threads of the screw 200.

When the vertical quick clamp 50 is used for the restraint assembly 5, the seat driver is placed as follows: first, the vertical type quick clamp 50 is opened; the driving component 4 is pushed away rightwards by one hand, and the seat driver is taken up by the other hand and placed on the fixed seat 2 and the rotating seat 3; then, one hand releases the driving component 4, and the other hand rotates the manual crank, so that the driving shaft 42 is aligned with the square hole 102 and inserted into the connection; and finally, the vertical quick clamp 50 is closed and pressed tightly. The seat driver removal process is reversed. It can be seen that the above process is relatively complicated and the efficiency of placement and removal is low. In order to simplify the steps and improve the efficiency, the embodiment further designs a limiting assembly 5 with another structure, which is specifically as follows:

as shown in fig. 9 to 22, the limiting assembly 5 of the present embodiment may further adopt a pressing linkage mechanism, the pressing linkage mechanism includes a lifting seat 51, a pressing plate 52 and a lock 53, the lifting seat 51 is fixedly disposed on the fixing base 2, the lifting seat 51 is disposed on the periphery of the gear box 100 in a clearance manner, the pressing plate 52 is hinged on the lifting seat 51, the lock 53 is mounted on the lifting seat 51, and the lock 53 is located on the opposite side of the driving assembly 4; when the pressing plate 52 is turned to one side, the pressing plate 52 is suitable for covering and fixing the gearbox 100, the pressing plate 52 is suitable for entering the lock 53, so that the gearbox 100 keeps a locked state, when the pressing plate 52 is turned to the other side, the pressing plate 52 is separated from the upper side of the gearbox 100, and the pressing plate 52 is suitable for pushing the cross sliding seat 41 to slide towards the direction that the driving shaft 42 is separated from the gearbox 100, so that the gearbox 100 keeps an unlocked state.

Through the structure, the limiting assembly 5 and the driving assembly 4 can be unlocked in a linkage mode, and the seat driver can be taken out in one step. Of course, the placing process is also simpler and more efficient, and the specific steps are as follows: firstly, the limiting assembly 5 and the driving assembly 4 can be kept in an unlocking state, and the seat driver can be placed on the fixed seat 2 and the rotating seat 3 by one hand; the press plate 52 is then simply flipped by one hand and the hand crank rotated by the other hand so that the press plate 52 enters the lock 53 and presses against the gear box 100 with the drive shaft 42 aligned with the square hole 102 and inserted into the connection to complete the placement.

For smoother linkage, as shown in fig. 16 and 19, the traverse seat 41 of the present embodiment is provided with an inclined sliding surface 411, a vertical surface 412 is smoothly connected to a lower end of the inclined sliding surface 411, and a lock rod 521 extends from the pressing plate 52; when the pressing plate 52 is turned to the right side, the lock rod 521 is adapted to abut against the inclined sliding surface 411 and slide from top to bottom, so as to push the traverse seat 41 to slide rightward until the pressing plate 52 is turned to the horizontal position, the lock rod 521 enters the vertical surface 412, and at this time, the traverse seat 41 and the pressing plate 52 are kept in the stop state under the action of the return spring 45. It will be appreciated that the return spring 45 provides a holding force and does not provide a flipping force when the platen 52 is in the dead-center position.

As shown in fig. 12, 17, 18, 20, 21 and 22, the lock 53 adopts a slide lock structure, and the lock 53 specifically includes a lock holder 531, an inclined slider 532 and a locking spring 533, the lock holder 531 is fixedly disposed on the lifting holder 51, the inclined slider 532 is slidably disposed on the lock holder 531 in the left-right direction, the locking spring 533 is disposed between the lock holder 531 and the inclined slider 532 and forces the inclined slider 532 to slide toward the pressing plate 52, so that a lock hole 530 is formed between the lock holder 531 and the inclined slider 532; when the pressing plate 52 is turned to the left side, the lock rod 521 is adapted to abut against the inclined slide block 532 and slide from top to bottom, so as to push the inclined slide block 532 to slide back to the pressing plate 52 until the pressing plate 52 is turned to the horizontal position, the lock rod 521 is separated from the inclined slide block 532 and enters the lock hole 530, and at this time, the inclined slide block 532 limits the lock rod 521 to be separated from the lock hole 530, so that the pressing plate 52 covers the fixed gearbox 100. In addition, a push rod 534 extends from the inclined slider 532, and the push rod 534 is suitable for pushing the inclined slider 532, so that unlocking is facilitated.

As shown in fig. 17 and 18, in order to ensure the pressing and fixing effect of the pressing plate 52 on the gearbox 100, an auxiliary plate 522 extends from the pressing plate 52 of the present embodiment, and the auxiliary plate 522 is adapted to cover above the gearbox 100 for increasing the contact area of the pressing plate 52 on the gearbox 100. In addition, in order to ensure the pressing and fixing effect on the gear box 100 and reduce the damage to the gear box 100, an elastic pad 523 is further disposed below the pressing plate 52, and the elastic pad 523 is suitable for directly abutting against the gear box 100.

The foregoing has described the principles, principal features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and such changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A lead screw straightening device is characterized by comprising:

a base;

the measuring assembly is suitable for displaying the straightness accuracy parameters of the screw rod when the screw rod rotates;

2. The screw straightening device according to claim 1, wherein: the driving assembly comprises a transverse moving seat, a driving shaft, a power source and a sliding rail, the driving shaft is rotatably arranged on the transverse moving seat, the power source is suitable for driving the driving shaft to rotate, the sliding rail is fixedly arranged on the base along the left-right direction, and the transverse moving seat is slidably arranged on the sliding rail along the left-right direction; when the transverse moving seat slides along the left and right directions, the driving shaft is suitable for being connected with or separated from the gear box.

3. The screw straightening device according to claim 2, characterized in that: the driving assembly further comprises a return spring and a stop block, the stop block is fixedly arranged on the base, the return spring is arranged between the transverse moving seat and the stop block along the left-right direction, and the return spring is suitable for forcing the transverse moving seat to slide towards the direction of the driving shaft connected with the gear box.

4. The screw straightening device according to claim 1, wherein: the limiting assembly is a vertical quick clamp which is arranged on the fixed seat and is suitable for pressing and fixing the gear box along the vertical direction.

5. A lead screw straightening device according to claim 3, characterized in that: the limiting assembly is a pressing linkage mechanism, the pressing linkage mechanism comprises a lifting seat, a pressing plate and a lock, the lifting seat is fixedly arranged on the fixed seat, the lifting seat is arranged around the gear box in a clearance manner, the pressing plate is hinged to the lifting seat, the lock is arranged on the lifting seat, and the lock is positioned on the opposite side of the driving assembly; when the pressing plate is turned to one side, the pressing plate is suitable for covering and fixing the gear box, and the pressing plate is suitable for entering the lockset, so that the gear box keeps a locked state, when the pressing plate is turned to the other side, the pressing plate is separated from the upper part of the gear box, and the pressing plate is suitable for pushing the transverse moving seat to slide towards the direction that the driving shaft is separated from the gear box, so that the gear box keeps an unlocked state.

6. The screw straightening device according to claim 5, wherein: the transverse moving seat is provided with an oblique sliding surface, the lower end of the oblique sliding surface is smoothly connected with a vertical surface, and a lock rod extends out of the pressing plate; when the pressing plate is turned to the other side, the locking rod is suitable for abutting against the inclined sliding surface and sliding downwards from top to bottom, so that the transverse moving seat is pushed to slide towards the direction that the driving shaft is separated from the gear box until the pressing plate is turned to the horizontal position, the locking rod enters the vertical surface, and at the moment, the transverse moving seat and the pressing plate are kept in a locking state under the action of the reset spring.

7. The lead screw straightening device according to claim 5, wherein: a lock rod extends out of the pressing plate, the lock comprises a lock seat, an inclined sliding block and a locking spring, the lock seat is fixedly arranged on the lifting seat, the inclined sliding block is arranged on the lock seat in a sliding mode along the left-right direction, the locking spring is arranged between the lock seat and the inclined sliding block and forces the inclined sliding block to slide towards one side of the pressing plate, and a lock hole is formed between the lock seat and the inclined sliding block; when the clamp plate overturns to one side, the locking lever is suitable for contradicting the oblique slider and from last down sliding, and then promote the oblique slider is in a reverse direction the clamp plate slides, until the clamp plate upset to horizontal position, the locking lever breaks away from the oblique slider and gets into the lockhole, the slider restriction to one side this moment the locking lever breaks away from the lockhole makes the clamp plate lid closes fixedly the gear box.

8. The lead screw straightening device according to claim 1, characterized in that: the measuring assembly comprises an instrument seat and a plurality of dial indicators, the instrument seat is fixedly arranged on the base, the dial indicators are fixedly arranged on the instrument seat along the vertical direction, and the dial indicators are arranged at intervals along the length direction of the screw rod; the dial indicator is suitable for abutting against the lower portion of the screw rod, and when the screw rod rotates, the dial indicator is suitable for displaying the offset variation of each position of the screw rod.

9. The screw straightening device according to claim 1, wherein: the correcting assembly comprises a hinge seat, an operating handle, a pressing block and a buffer cushion, the hinge seat is fixedly arranged on the base, the operating handle is hinged on the hinge seat, the pressing block is hinged on the operating handle and extends downwards, and the buffer cushion is fixedly arranged below the pressing block; the buffer pad is suitable for propping against the upper part of the screw rod, and the operating handle is rotated to drive the pressing block to press the screw rod from top to bottom.

10. The screw straightening device according to claim 1, wherein: the fixed seat is provided with a fixed groove, the gear box is suitable for being embedded into the fixed groove to be placed, and the fixed groove is suitable for limiting the displacement of the gear box along the left-right direction; a limiting groove is further formed in the fixing groove, a convex block of the gear box is suitable for being embedded into the limiting groove, and the limiting groove is suitable for limiting the displacement of the gear box along the front-back direction;