CN217814824U

CN217814824U - Ball nut screw capable of reducing axial movement influence of motor

Info

Publication number: CN217814824U
Application number: CN202221691810.2U
Authority: CN
Inventors: 吴尚; 马海峰
Original assignee: Changzhou Wheeler Motor Co ltd
Current assignee: Changzhou Wheeler Motor Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-11-15
Anticipated expiration: 2032-06-30

Abstract

The utility model discloses a can reduce ball nut lead screw of motor axial float influence, its technical scheme main points are: the automatic wire winding device is characterized by comprising a motor, an output shaft is installed at the front end of the motor, a key rod is fixedly connected to the front end of the output shaft, a wire rod body is installed at the front end of the key rod, a bottom plate is arranged on the left side of the motor, a screw rod nut is installed on the bottom plate, a connecting groove is formed in the front end of the bottom plate, a movable groove is formed in the bottom plate on the rear side of the connecting groove, folding rods are installed inside the movable groove and the connecting groove, a traction steel rope is connected between each folding rod and an adjacent folding rod, each folding rod is connected with the bottom plate through an elastic rope, a fixed shaft used for winding the traction steel rope is arranged below the bottom plate, and the key rod and the key groove on the device are used for enabling a wire rod to normally transmit when the motor axially moves, and the device can also adjust the moving range of the screw rod nut through the traction steel rope matched with the adjacent folding rods.

Description

Ball nut screw capable of reducing axial movement influence of motor

Technical Field

The utility model relates to a ball nut lead screw technical field, concretely relates to can reduce ball nut lead screw of motor axial float influence.

Background

The ball nut screw is a commonly used transmission part, is used for turning rotary motion into linear motion, is commonly used in the lathe trade, and ball nut screw usually with the output shaft connection of motor, through the rotation of motor output shaft drive ball nut screw, realizes the function to the adjustment of screw nut position, but current ball nut screw still has some defects when using.

Current ball nut lead screw can not take place to protect the lead screw when the axial float at the motor, leads to lead screw and nut to remove simultaneously, influences the driven accuracy of lead screw, and current ball nut lead screw can not adjust the home range of lead screw nut when using moreover, and degree of regulation is low.

SUMMERY OF THE UTILITY MODEL

To the problem mentioned in the background art, the utility model aims at providing a can reduce ball nut lead screw of motor axial float influence to current ball nut lead screw that mentions in solving the background art can not protect the lead screw when the axial float takes place for the motor, leads to lead screw and nut to remove simultaneously easily, and current ball nut lead screw can not carry out the problem of adjusting to the home range of lead screw nut when using moreover.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a can reduce ball nut lead screw of motor axial float influence, includes the motor, the output shaft is installed to the front end of motor, the front end fixedly connected with of output shaft has the key pole, the lead screw body is installed to the front end of key pole, the left side of motor is provided with the bottom plate, install screw-nut on the bottom plate, the spread groove has been seted up to the front end of bottom plate, the movable groove has been seted up in the bottom plate of spread groove rear side, the internally mounted of movable groove and spread groove has the folding bar, be connected with between folding bar and the adjacent folding bar and pull the steel cable, the folding bar links to each other with the bottom plate through the bungee, the below of bottom plate is provided with the fixed axle that is used for convoluteing and pulls the steel cable.

Through adopting above-mentioned technical scheme, through key pole and the keyway on the device for the lead screw can guarantee that the device still can normally transmit when the motor axial float, has promoted the stability of device, and the device can also pull the home range of steel cable to the lead screw nut through the cooperation of adjacent two folding rods at the in-process that uses moreover and adjust, has promoted the adjustable degree of device.

Preferably, a key groove is formed in the screw rod body, and the inner wall of the key groove is attached to the outer wall of the key rod.

Through adopting above-mentioned technical scheme, keyway cooperation key pole for the lead screw body can keep the lead screw normal rotation can not take place the skew around the skew when motor output shaft takes place the axial float, has promoted the stability of device.

The preferred, the spacing groove has been seted up in the centre of bottom plate, the inside laminating of spacing groove is provided with the stopper, be fixed connection between stopper and the screw-nut, the lower surface of screw-nut and the upper surface laminating of bottom plate mutually.

By adopting the technical scheme, the limiting groove and the limiting block are used for limiting the screw rod nut, so that the nut can move straightly and forwards when the screw rod rotates, and the subsequent adjustment of the moving range of the screw rod nut is facilitated.

Preferably, the screw rod nut forms a sliding structure with the bottom plate through the limiting groove and the limiting block, and the limiting block is in a cylinder with a tangent plane arranged above.

Through adopting above-mentioned technical scheme, guarantee that the stopper can be at the straight slip of spacing inslot to keep the nut can not upwards break away from the device, promoted the stationarity of device.

Preferably, the connecting groove and the movable groove are communicated with each other, and the inner walls of the connecting groove and the movable groove are mutually attached to the outer wall of the folding rod.

Through adopting above-mentioned technical scheme, guarantee that the folding rod only can remove about, can not the back-and-forth movement or reciprocate, make things convenient for follow-up cooperation to draw the subassembly to use.

Preferably, the fixed shaft and the folding rod are integrally formed, and the folding rod forms a telescopic structure with the adjacent folding rod through the elastic rope, the traction steel rope and the fixed shaft.

Through adopting above-mentioned technical scheme, can twine different circles number with the traction cable on the fixed axle to adjust the interval of two adjacent folding rods, promoted the practicality of device.

To sum up, the utility model discloses mainly have following beneficial effect:

when the screw rod is used, the output shaft can still normally drive the screw rod to rotate when a motor on the device axially moves through the key rod and the key groove, so that the stability of the device in use is improved, the defect that the transmission accuracy of the screw rod is influenced because the screw rod and a nut can simultaneously move left and right when the motor cannot axially move is overcome, and the screw rod has the advantage of stronger stability;

this lead screw still can be through the traction steel cable, bungee and the folding rod that set up when using for traction steel cable twines different number of turns on the fixed axle, thereby makes traction steel cable can stimulate two adjacent folding rods, adjusts the position of two adjacent folding rods then, makes the device can adjust the home range of lead screw nut.

Drawings

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

FIG. 2 is a schematic view of the connection structure of the limiting block and the feed screw nut of the present invention;

FIG. 3 is a schematic view of the connection structure of the elastic cord and the folding bar of the present invention;

FIG. 4 is a schematic view of the key rod and the lead screw body of the present invention;

reference numerals: 1. a motor; 2. an output shaft; 3. a key lever; 4. a screw body; 5. a key slot; 6. a base plate; 7. a feed screw nut; 8. a limiting groove; 9. a limiting block; 10. a bungee cord; 11. folding the rod; 12. connecting grooves; 13. a traction steel rope; 14. a fixed shaft; 15. a movable groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 4, a ball nut screw capable of reducing the influence of axial play of a motor includes a motor 1, an output shaft 2 is installed at the front end of the motor 1, a bottom plate 6 is disposed on the left side of the motor 1, a key rod 3 is fixedly connected to the front end of the output shaft 2, a screw rod body 4 is installed at the front end of the key rod 3, the screw rod body 4 and the key rod 3 are connected in a key manner, it is ensured that the screw rod body 4 can still normally rotate when the output shaft 2 of the motor 1 axially plays, a screw rod nut 7 is installed on the bottom plate 6, the screw rod nut 7 and the screw rod body 4 are in threaded connection, a connecting groove 12 is formed in the front end of the bottom plate 6, a movable groove 15 located behind the connecting groove 12 is formed in the bottom plate 6, a folding rod 11 is slidably installed inside the movable groove 15 and the connecting groove 12, a traction steel rope 13 is connected between the folding rod 11 and an adjacent folding rod 11, a fixing shaft 14 for winding the traction steel rope 13 is disposed below the bottom plate 6, the folding rod 11 is connected with the bottom plate 6 through a slack rope 10, and the slack rope 10 facilitates subsequent resetting of the folding rod 11.

Referring to fig. 4, a key groove 5 for butting with the key rod 3 is formed in the lead screw body 4, the inner wall of the key groove 5 is attached to the outer wall of the key rod 3, and the key groove 5 on the device is matched with the key rod 3, so that when the device axially moves, the lead screw body 4 can keep the position of the lead screw body unchanged during rotation.

Referring to fig. 1-2, a through type limiting groove 8 is formed in the middle of a bottom plate 6, a limiting block 9 is arranged inside the limiting groove 8 in a laminating mode, the limiting block 9 and a lead screw nut 7 are fixedly connected, the lead screw nut 7 forms a sliding structure with the bottom plate 6 through the limiting groove 8 and the limiting block 9, the limiting block 9 is in a shape of a cylinder with a tangent plane arranged above the cylinder, the lower surface of the lead screw nut 7 is mutually laminated with the upper surface of the bottom plate 6, the limiting groove 8 and the limiting block 9 guarantee that the lead screw nut 7 can be straightly moved left and right, and stability of the device is improved.

Referring to fig. 1-3, a fixed shaft 14 and a folding rod 11 are integrally formed, a connecting groove 12 and a movable groove 15 are communicated with each other, the inner walls of the connecting groove 12 and the movable groove 15 are attached to the outer wall of the folding rod 11, the folding rod 11 forms a telescopic structure with the fixed shaft 14 and the adjacent folding rod 11 through an elastic rope 10 and a traction steel rope 13, the traction steel rope 13 can be wound on the outer side of the fixed shaft 14 in different turns, the positions of the adjacent folding rods 11 are adjusted, the moving range of a nut is adjusted, and other elastic parts such as the traction rope can be matched with the spring or the torsion spring to replace the elastic rope 10 in actual use.

The working principle is as follows:

as shown in fig. 1-2 and 4, when the device is used, the output shaft 2 of the motor 1 can drive the key rod 3 to rotate, and because the inner wall of the key groove 5 in the screw rod body 4 is attached to the outer wall of the key rod 3, the screw rod body 4 can normally rotate under the condition that the left and right positions of the screw rod body 4 are not changed when the output shaft 2 axially moves;

as shown in fig. 1-3, when the device is used, the lead screw nut 7 moves straight and left and right under the limiting action of the limiting groove 8 and the limiting block 9 in the bottom plate 6 through the rotation of the lead screw body 4, when the lead screw nut 7 moves, the lower surface of the lead screw nut 7 is always attached to the upper surface of the bottom plate 6, a worker can pull the traction steel rope 13 to stretch the bungee 10, the traction steel rope 13 is wound on the surface of the fixed shaft 14 with different turns, so that the folding rods 11 at two adjacent positions can be close to each other, the adjustment and the fixing work of the positions of the folding rods 11 are realized, the positions of the protruding parts of the rear ends of the folding rods 11 on the bottom plate 6 are adjusted, and the device can adjust the moving range of the lead screw nut 7.

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.

Claims

1. The utility model provides a can reduce ball nut lead screw of motor axial float influence, includes motor (1), its characterized in that: the front end of the motor (1) is provided with an output shaft (2), the front end of the output shaft (2) is fixedly connected with a key rod (3), the front end of the key rod (3) is provided with a screw rod body (4), the left side of the motor (1) is provided with a bottom plate (6), a screw rod nut (7) is installed on the bottom plate (6), the front end of the bottom plate (6) is provided with a connecting groove (12), the bottom plate (6) at the rear side of the connecting groove (12) is provided with a movable groove (15), the movable groove (15) and the connecting groove (12) are internally provided with folding rods (11), traction steel ropes (13) are connected between the folding rods (11) and adjacent folding rods (11), the folding rods (11) are connected with the bottom plate (6) through elastic ropes (10), and fixing shafts (14) used for winding the traction steel ropes (13) are arranged below the bottom plate (6).

2. The ball nut screw capable of reducing the axial play influence of the motor according to claim 1, wherein: the lead screw is characterized in that a key groove (5) is formed in the lead screw body (4), and the inner wall of the key groove (5) is mutually attached to the outer wall of the key rod (3).

3. The ball nut screw capable of reducing the axial play influence of the motor according to claim 1, wherein: spacing groove (8) have been seted up to the centre of bottom plate (6), the inside laminating of spacing groove (8) is provided with stopper (9), be fixed connection between stopper (9) and screw-nut (7), the lower surface of screw-nut (7) laminates with the upper surface of bottom plate (6) mutually.

4. The ball nut screw capable of reducing the axial play influence of the motor according to claim 3, wherein: the screw rod nut (7) forms a sliding structure with the bottom plate (6) through the limiting groove (8) and the limiting block (9), and the limiting block (9) is in a cylinder with a tangent plane arranged above.

5. The ball nut screw capable of reducing the axial play influence of the motor according to claim 1, wherein: the connecting groove (12) and the movable groove (15) are communicated with each other, and the inner walls of the connecting groove (12) and the movable groove (15) are attached to the outer wall of the folding rod (11).

6. The ball nut screw capable of reducing the axial play influence of the motor according to claim 5, wherein: the folding rod is characterized in that the fixed shaft (14) and the folding rod (11) are integrally formed, and the folding rod (11) forms a telescopic structure with the adjacent folding rod (11) through the elastic rope (10), the traction steel rope (13) and the fixed shaft (14).