CN218326064U

CN218326064U - Ball screw stroke limiter

Info

Publication number: CN218326064U
Application number: CN202222399406.4U
Authority: CN
Inventors: 吴静; 花世勇; 徐静
Original assignee: Jiangsu Sutong Automation Co ltd
Current assignee: Jiangsu Sutong Automation Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-17
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to a ball screw stroke limiter, which belongs to the technical field of ball screw limiting, wherein a sleeve is a cylindrical structure with openings on the left and right sides, a plurality of positioning holes are formed below the sleeve in a through manner, a plurality of positioning rods are respectively arranged in the positioning holes, and a plurality of rolling mechanism threads are screwed on the positioning rods; the sliding rods are fixedly arranged between the supporting frames and located below the lead screw, first sliding grooves are formed in the sliding rods, limiting grooves are formed in the sliding rods on the front side and the rear side of the first sliding grooves, the sliding blocks are arranged in the first sliding grooves in a sliding mode respectively, and the positioning rods are hinged to the sliding blocks respectively; the upper surfaces of the two limiting blocks are arranged in a reverse inclined mode, the two limiting blocks are arranged on the left side and the right side of the first sliding groove in a sliding mode respectively, and the two limiting blocks are provided with second sliding grooves; can reduce the wearing and tearing of ball and raceway when ball moves the extreme point, easy operation, the practicality is strong.

Description

Ball screw stroke limiter

Technical Field

The utility model relates to a spacing technical field of ball, concretely relates to ball stroke stopper.

Background

Ball is the most commonly used drive element on instrument machinery and precision machine, and its main function is with rotary motion conversion linear motion, or convert the moment of torsion into axial repeated action power, has high accuracy, reversibility and efficient characteristics concurrently simultaneously, and some uses among the prior art are spacing hard for ball and raceway appear wearing and tearing, lead to influencing the precision and the life-span of lead screw.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect with not enough, provide a reasonable in design's ball stroke stopper, can remove the extreme point when ball, reduce the wearing and tearing of ball and raceway, easy operation, the practicality is strong.

In order to achieve the above purpose, the utility model adopts the following technical proposal: it comprises a supporting frame, a screw rod and a motor; the power box is fixedly arranged on the left side of the support frame; the lead screw is screwed between the support frames by using a bearing; the motor is fixedly arranged on the right side of the support frame, the output end of the motor is connected with the right end of the screw rod, and the motor is connected with the power box;

it also includes:

the sleeve is of a cylindrical structure with openings at the left side and the right side, a plurality of positioning holes are formed in the lower part of the sleeve in a penetrating manner, a plurality of positioning rods are respectively arranged in the positioning holes, and a plurality of rolling mechanisms are screwed on the positioning rods in a threaded manner;

the sliding rod is fixedly arranged between the supporting frames and positioned below the screw rod, a first sliding groove is formed in the sliding rod, limiting grooves are formed in the sliding rods on the front side and the rear side of the first sliding groove, the sliding blocks are respectively arranged in the first sliding grooves in a sliding mode, and the positioning rods are respectively hinged to the sliding blocks;

the stopper, the stopper be two, the upper surface of two stoppers is the tilt reversal setting, two stoppers slide the left and right sides that sets up on spout one respectively, two spouts have all been seted up on two stoppers.

Preferably, the rolling mechanism is composed of an arc-shaped plate and a ball; the several arc is respectively screwed on the locating lever, and the radian of arc and the screw thread on the lead screw cooperate and set up, and spout three has all been seted up to the upper surface of several arc, and both ends all utilize back pearl pipe through connection around the spout three, and the several ball is movable respectively and sets up in spout three and back pearl pipe, and the raceway movable contact setting of one side of ball and lead screw.

Preferably, the sleeve in all seted up spacing hole on the wall of front and back both sides, the arc activity sets up in spacing downthehole, the top of gag lever post articulates the upside in spacing hole, the bottom of gag lever post link up and passes behind arc and the telescopic lateral wall, the activity sets up at the spacing inslot.

Preferably, the left side and the right side of the plurality of limiting rods are provided with sliding grooves, the sliding grooves on the left side and the right side are arranged in a reverse inclined mode, and the sliding grooves are matched with the sliding grooves.

Preferably, the first sliding groove is internally screwed with a screw rod by a bearing, threads on the left side and the right side of the screw rod are reversely arranged, the two limit blocks are respectively screwed on the screw rod, and a disc is connected after the left end of the screw rod penetrates through the side wall of the support frame.

Compared with the prior art, the beneficial effects of the utility model are that: a ball stroke stopper, can reduce the wearing and tearing of ball and raceway when ball removes the extreme point, guaranteed the life of lead screw.

Drawings

Description of the reference numerals:

fig. 1 is a front view of the present invention.

Fig. 2 is a schematic structural diagram of the sleeve, the sliding rod and the rolling mechanism of the present invention.

Fig. 3 is a schematic structural view of the middle arc plate of the present invention.

Fig. 4 is a schematic structural view of the middle stop lever of the present invention.

Fig. 5 is a schematic structural diagram of the middle stopper of the present invention.

Description of reference numerals:

the device comprises a support frame 1, a screw rod 2, a motor 3, a power box 4, a sleeve 5, a positioning hole 6, a positioning rod 7, a rolling mechanism 8, a sliding rod 9, a first sliding groove 10, a limiting groove 11, a sliding block 12, a limiting block 13, a second sliding groove 14, an arc-shaped plate 15, a ball 16, a third sliding groove 17, a limiting hole 18, a limiting rod 19, a sliding groove 20, a screw rod 21 and a disc 22.

Detailed Description

In the following, the technical solutions of the present invention will be clearly and completely described with reference to the accompanying drawings, and the preferred embodiments in the description are only examples, and all other embodiments obtained by those skilled in the art without any inventive work belong to the scope of the present invention.

As shown in fig. 1 to 5, the following technical solutions are adopted in the present embodiment: it comprises a supporting frame 1, a lead screw 2 and a motor 3; the power box 4 is fixedly arranged on the left side of the support frame 1; the screw rod 2 is screwed between the support frames 1 by using a bearing; the motor 3 is fixedly arranged on the right side of the support frame 1, the output end of the motor 3 is connected with the right end of the screw rod 2, and the motor 3 is connected with the power box 4;

it also includes:

the sleeve 5 is a cylindrical structure with openings at the left and right sides, a plurality of positioning holes 6 are formed below the sleeve 5 in a penetrating manner, a plurality of positioning rods 7 are respectively arranged in the positioning holes 6, a plurality of rolling mechanisms 8 are screwed on the positioning rods 7 in a threaded manner, and each rolling mechanism 8 is composed of an arc-shaped plate 15 and a ball 16; the plurality of arc plates 15 are respectively screwed on the positioning rod 7 in a threaded manner, the radian of each arc plate 15 is matched with the corresponding thread on the screw rod 2, three sliding grooves 17 are formed in the upper surfaces of the plurality of arc plates 15, the front end and the rear end of each sliding groove 17 are connected through ball returning pipes, the plurality of balls 16 are respectively movably arranged in the three sliding grooves 17 and the ball returning pipes, one sides of the balls 16 are movably arranged in contact with the roller path of the screw rod 2, an operator opens the motor 3 to enable the screw rod 2 to rotate, so that the balls 16 on the arc plates 15 slide in the roller path on the screw rod 2, and the sleeve 5 and the rolling mechanism 8 move;

the sliding rods 9 are fixedly arranged between the supporting frames 1, the sliding rods 9 are positioned below the lead screw 2, sliding grooves I10 are formed in the sliding rods 9, limiting grooves 11 are formed in the sliding rods 9 on the front side and the rear side of each sliding groove I10, the sliding blocks 12 are respectively arranged in the sliding grooves I10 in a sliding mode, and the positioning rods 7 are respectively hinged to the sliding blocks 12;

stopper 13, stopper 13 be two, the upper surface of two stoppers 13 is the reverse slope setting, two stoppers 13 slide the left and right sides that sets up on spout 10 respectively, two spout 14 have all been seted up on two stoppers 13, spacing hole 18 has all been seted up on the wall of the front and back both sides in the sleeve 5, arc 15 activity sets up in spacing hole 18, the top of gag lever post 19 articulates the upside at spacing hole 18, the bottom of gag lever post 19 link up and passes behind the lateral wall of arc 15 and sleeve 5, the activity sets up in spacing groove 11, when locating lever 7 drives gag lever post 19 and moves corresponding position, make gag lever post 19 slide to spout two 14 on, make gag lever post 19 rise, jack-up sleeve 5, make ball 16 reduce the friction with the raceway on the lead screw 2, sliding tray 20 has all been seted up to the left and right sides of several gag lever post 19, and the sliding tray 20 of the left and right sides is the reverse slope setting, sliding tray 20 cooperatees with two spout 14 and sets up, make things convenient for several gag lever post 19 slide to stopper 13, it has connect to revolve to connect to have reverse screw 21 in spout one 10, the left and right side screw thread sets up, thereby two stopper 13 moves the screw thread and the distance and the people's removal screw rod 21 and the distance is connected with the lead screw 21, thereby two people's removal disc support frame 21, thereby two people's removal discs 21 that lead screw moves the lead screw moves back lead screw moves the distance and make the lead screw moves the distance and rotate, thereby two limit screw moves the lead screw moves.

In use the utility model discloses the time, the earlier distance that removes as required of operating personnel rotates disc 22, make lead screw 21 rotate, thereby make two stoppers 13 remove and change the interval between two stoppers 13, later open motor 3 and make lead screw 2 rotate, make ball 16 on the arc 15 roll in the raceway on lead screw 2, make sleeve 5 remove, when sleeve 5 removes corresponding position, make gag lever post 19 slide on spout two 14 and slider 12 remove in stopper 13's the recess, make gag lever post 19 rise, jack up sleeve 5 upwards, make ball 16 and the raceway on the lead screw 2 reduce friction, leave the raceway on the lead screw 2 until ball 16, when needing to make sleeve 5 reverse movement, close motor 3, can rotate disc 22, make stopper 13 remove, make gag lever post 19 remove in the spacing groove 11, make ball 16 on the arc 15 and the raceway contact on the lead screw 2, open the reversal with motor 3, make sleeve 5 reverse movement.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. the limiting block 13 is matched with the rolling mechanism 8, so that friction between the ball 16 and a roller path on the screw rod 2 can be reduced, and abrasion is reduced;

2. the screw rod 21 is arranged, so that the distance between the two limit blocks 13 can be changed, and the moving distance of the sleeve 5 is controlled.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A ball screw stroke limiter comprises a support frame (1), a screw (2) and a motor (3); the power supply box (4) is fixedly arranged on the left side of the support frame (1); the lead screw (2) is screwed between the support frames (1) by using a bearing; the motor (3) is fixedly arranged on the right side of the support frame (1), the output end of the motor (3) is connected with the right end of the lead screw (2), and the motor (3) is connected with the power box (4);

it is characterized in that it also comprises:

the sleeve (5) is of a cylindrical structure with openings at the left side and the right side, a plurality of positioning holes (6) are formed in the lower portion of the sleeve (5) in a penetrating mode, a plurality of positioning rods (7) are arranged in the positioning holes (6) respectively, and a plurality of rolling mechanisms (8) are screwed on the positioning rods (7) in a threaded mode;

the sliding rods (9) are fixedly arranged between the supporting frames (1), the sliding rods (9) are located below the lead screw (2), a first sliding groove (10) is formed in each sliding rod (9), limiting grooves (11) are formed in the sliding rods (9) on the front side and the rear side of the first sliding groove (10), the sliding blocks (12) are arranged in the first sliding grooves (10) in a sliding mode respectively, and the positioning rods (7) are hinged to the sliding blocks (12) respectively;

stopper (13), stopper (13) be two, the upper surface of two stoppers (13) is the tilt reversal setting, two stoppers (13) slide the left and right sides that sets up on spout one (10) respectively, all seted up spout two (14) on two stoppers (13).

2. The ball screw stroke limiter of claim 1, wherein: the rolling mechanism (8) is composed of an arc-shaped plate (15) and a ball (16); several arc (15) screw thread connects soon respectively on locating lever (7), and the radian of arc (15) and the screw thread on lead screw (2) cooperate the setting, and three (17) of spout have all been seted up to the upper surface of several arc (15), and both ends all utilize back pearl pipe through connection around three (17) of spout, and several ball (16) activity respectively set up in three (17) of spout and back pearl intraductal, and the raceway movable contact setting of one side and lead screw (2) of ball (16).

3. The ball screw travel limiter of claim 2, wherein: spacing holes (18) have all been seted up on the wall of the front and back both sides in sleeve (5), arc (15) activity sets up in spacing hole (18), the top of gag lever post (19) articulates the upside in spacing hole (18), the bottom of gag lever post (19) link up and pass behind the lateral wall of arc (15) and sleeve (5), the activity sets up in spacing groove (11).

4. A ball screw travel stop according to claim 3, wherein: the left side and the right side of the plurality of limiting rods (19) are both provided with sliding grooves (20), the sliding grooves (20) on the left side and the right side are arranged in a reverse inclined mode, and the sliding grooves (20) are matched with the second sliding grooves (14).

5. The ball screw stroke limiter of claim 1, wherein: the sliding chute I (10) is internally screwed with a screw rod (21) by utilizing a bearing, threads on the left side and the right side of the screw rod (21) are reversely arranged, two limit blocks (13) are respectively screwed on the screw rod (21), and the left end of the screw rod (21) is connected with a disc (22) after passing through the side wall of the support frame (1).