CN217029841U

CN217029841U - High-bearing low-noise composite ball screw pair

Info

Publication number: CN217029841U
Application number: CN202220766910.0U
Authority: CN
Inventors: 胡拥军; 胡玉华; 纪友根
Original assignee: Jiangsu Morality Mechanical & Electrical Technology Co ltd
Current assignee: Jiangsu Morality Mechanical & Electrical Technology Co ltd
Priority date: 2022-03-31
Filing date: 2022-03-31
Publication date: 2022-07-22
Anticipated expiration: 2032-03-31

Abstract

The utility model relates to the technical field of ball screw pairs, and discloses a high-bearing low-noise composite ball screw pair, which comprises: the lead screw, the ball groove has been seted up to the outer wall of lead screw, the middle part cover of lead screw is equipped with the swivel nut, the screw thread has been seted up to the one end inner wall of swivel nut, swivel nut one end has the abaculus through threaded connection, the junction of abaculus and screw thread is fixed with the spiro, the outer wall that the spiro one end was kept away from to the abaculus is fixed with curved baffle. The high-bearing low-noise composite ball screw pair is provided with an arc-shaped baffle which is arranged on the outer wall of one end of the screw sleeve through an embedded ring, so that a screw rod penetrating into the screw sleeve is protected, and the condition that the screw rod or the screw sleeve is damaged due to the fact that foreign matters are involved and pulled in the running process of the screw rod is reduced; the rubber ring that makes an uproar falls is used for carrying out the separation to the rolling sound of ball when the screw rod moves in the swivel nut to reduce the friction noise between the metalwork, reduce the friction loss between the metalwork, prolong ball screw pair's life.

Description

High-bearing low-noise composite ball screw pair

Technical Field

The utility model relates to the technical field of ball screw pairs, in particular to a high-bearing low-noise composite ball screw pair.

Background

An end cap type ball screw assembly is a circulation system in which a ball return device is disposed at an end portion of a nut, and a through hole is provided in the nut. The wall thickness of the nut is drilled with an axial through hole as a return channel of the ball, two end faces of the nut are provided with a reverser, and a connector of the reverser is tangent to the thread roller path and can guide the ball to enter the ball return through hole to form a closed loop. May be multiple start threads each forming a ball chain.

The high-bearing low-noise composite ball screw pair in the market is mostly in an exposed state at the joint of a screw rod and a screw sleeve when in use, and is easy to cause partial foreign matters to be drawn into the screw sleeve along with the movement of the screw rod, so that the normal operation of the screw rod is influenced, and the noise is easily generated due to the friction of metal pieces during the operation of the screw rod, so that the high-bearing low-noise composite ball screw pair is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-bearing low-noise composite ball screw assembly, which aims to solve the problems that the joint of a screw rod and a screw sleeve is mostly in an exposed state when the high-bearing low-noise composite ball screw assembly in the market proposed in the background technology is used, partial foreign matters are easily drawn into the screw sleeve along with the movement of the screw rod to influence the normal operation of the screw rod, and noise pollution are easily generated due to the friction of metal parts when the screw rod operates.

In order to achieve the purpose, the utility model provides the following technical scheme: a high-bearing low-noise composite ball screw assembly comprises:

the outer wall of the lead screw is provided with a ball groove, the middle part of the lead screw is sleeved with a screw sleeve, the inner wall of one end of the screw sleeve is provided with a thread, one end of the screw sleeve is connected with an embedded ring through the thread, the joint of the embedded ring and the thread is fixed with a spiral ring, and the outer wall of the embedded ring, which is far away from one end of the spiral ring, is fixed with an arc-shaped baffle;

the clamping groove is formed in the position, close to the outer wall of one end of the thread, of the threaded sleeve, one end, far away from the thread, of the clamping groove is connected with the annular groove, the annular groove is formed in the position, close to the inner wall of one end of the thread, of the threaded sleeve, a backing ring is embedded inside the annular groove, a noise reduction rubber ring is fixed on the outer wall, close to one end of the annular groove, of the backing ring, and a clamping block is fixed at the joint of the backing ring and the clamping groove.

Preferably, the insert ring is in threaded connection with the screw rod through the spiral ring and the threads, the baffle plates are uniformly distributed along the outer wall of one side of the insert ring at equal intervals, and the central axis positions of the insert ring, the screw rod and the screw sleeve are overlapped.

Preferably, the backing ring is connected with the clamping groove in a clamping manner through the clamping block, the backing ring and the noise reduction rubber ring are connected in a bonding manner, and the backing ring and the noise reduction rubber ring are matched with the annular groove in shape structure.

Preferably, the thread insert is further provided with:

the rotary groove is formed in the inner wall of the middle of the screw sleeve, a circulation cavity is formed in the inner wall of one side of the screw sleeve, a fixing block is welded to the outer wall, far away from one end of the screw thread, of the screw sleeve, and mounting holes are formed in the outer walls of the two sides of the fixing block.

Preferably, the structure of fixed block is hollow structure, and the fixed block coincides with the axis position of swivel nut to the mounting hole sets up about the axis position symmetry of fixed block.

Preferably, the lead screw is further provided with:

the clamping plates are welded on the outer walls of the two ends of the screw rod, the reinforcing rods are connected to the inner surface of the middle of the clamping plates and penetrate through the screw rod, and clamping columns are fixed on the outer walls of the reinforcing rods.

Preferably, the cardboard sets up about the axis position symmetry of lead screw, and the axis position coincidence of cardboard, stiffener and lead screw to the card post is even distribution in turn along the outer wall of stiffener.

Compared with the prior art, the utility model has the beneficial effects that:

1. the high-bearing low-noise composite ball screw pair is provided with an arc-shaped baffle which is arranged on the outer wall of one end of the screw sleeve through an embedded ring, so that a protection function is provided for the screw rod penetrating into the screw sleeve, and the condition that the screw rod or the screw sleeve is damaged due to the fact that foreign matters are involved and pulled in the operation process of the screw rod is reduced; the noise reduction rubber ring is used for separating rolling sound of the ball when the screw rod runs in the threaded sleeve, friction noise between metal pieces is reduced, friction loss between the metal pieces is reduced, and the service life of the ball screw pair is prolonged.

2. The fixed block that sets up is convenient for install fixedly this ball screw pair, and the mounting hole that the symmetry was seted up on the outer wall of fixed block both sides is convenient for the staff to use the fastener to screw up fixedly, easily dismouting maintenance.

3. The cardboard and the stiffener that set up are used for improving the structural strength of lead screw, make the lead screw bear the weight of the object with carry the quality that can load when drawing higher, difficult emergence is bent or cracked condition, stability when promoting the lead screw operation.

Drawings

FIG. 1 is a schematic view of the structure of the screw rod and the threaded sleeve in combination;

FIG. 2 is a schematic front view of the structure of the screw insert and the insert ring of the present invention in a disassembled state;

FIG. 3 is a schematic view of a partial cross-sectional structure of the backing ring and the threaded sleeve of the present invention;

FIG. 4 is a schematic front view of the reinforcing bar and the clamping plate of the present invention.

In the figure: 1. a screw rod; 2. a ball groove; 3. a threaded sleeve; 4. embedding a ring; 5. a baffle plate; 6. a spiro ring; 7. a thread; 8. a card slot; 9. a backing ring; 10. a noise reduction rubber ring; 11. an annular groove; 12. a clamping block; 13. a rotary trough; 14. a circulation chamber; 15. a fixed block; 16. mounting holes; 17. clamping a plate; 18. a reinforcing rod; 19. and (5) clamping the column.

Detailed Description

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

The present invention provides a high-load low-noise compound ball screw assembly by improvement, please refer to fig. 1-2, which includes: the outer wall of the screw rod 1 is provided with a ball groove 2, the middle part of the screw rod 1 is sleeved with a screw sleeve 3, the inner wall of one end of the screw sleeve 3 is provided with a thread 7, one end of the screw sleeve 3 is connected with an embedded ring 4 through the thread 7, the central axis positions of the embedded ring 4, the screw rod 1 and the screw sleeve 3 are superposed, a spiral ring 6 is fixed at the joint of the embedded ring 4 and the thread 7, the embedded ring 4 is connected with the screw rod 1 through the spiral ring 6 and the thread 7 to form the thread 7, the arrangement of the spiral ring 6 and the thread 7 is convenient for workers to disassemble, assemble, disassemble, repair and maintain the embedded ring 4, and a wear part can be conveniently replaced after the embedded ring 4 is used for a long time; the outer wall that 6 one end of spiro is kept away from to the thimble 4 is fixed with curved baffle 5, and baffle 5 is equidistance evenly distributed along one side outer wall of thimble 4, the curved baffle 5 of setting is installed at the one end outer wall of swivel nut 3 through thimble 4, provide protect function to wearing the lead screw 1 of establishing in swivel nut 3, can prevent that partial foreign matter from being drawn into the swivel nut 3 from the junction of lead screw 1 and swivel nut 3, it leads to lead to 1 or the impaired condition of swivel nut 3 to take place to reduce lead to 1 operation in-process of lead screw because of the foreign matter is drawn into.

Referring to fig. 2-3, a high-load low-noise composite ball screw assembly includes: the clamping groove 8 is formed in the outer wall of the threaded sleeve 3 close to one end of the thread 7, one end, far away from the thread 7, of the clamping groove 8 is connected with the annular groove 11, the annular groove 11 is formed in the inner wall of the threaded sleeve 3 close to one end of the thread 7, the backing ring 9 is embedded inside the annular groove 11, the noise reduction rubber ring 10 is fixed on the outer wall of the backing ring 9 close to one end of the annular groove 11, the backing ring 9 and the noise reduction rubber ring 10 are in bonding connection, the backing ring 9 and the noise reduction rubber ring 10 are matched with the annular groove 11 in shape structure, the noise reduction rubber ring 10 is arranged for blocking rolling sound of balls when the screw rod 1 runs inside the threaded sleeve 3, friction noise between metal pieces is reduced, friction loss between the metal pieces is reduced, and the service life of the ball screw pair is prolonged; a clamping block 12 is fixed at the joint of the backing ring 9 and the clamping groove 8, the backing ring 9 is in clamping connection with the clamping groove 8 through the clamping block 12, and the clamping block 12 is used for keeping the position of the backing ring 9 in the screw sleeve 3 fixed, so that the backing ring 9 is prevented from rotating along with friction due to contact with the outer wall of the screw rod 1, and the abrasion speed of the contact surface of the noise reduction rubber ring 10 and the annular groove 11 is further reduced; the rotary groove 13 is formed in the inner wall of the middle of the screw sleeve 3, the inner wall of one side of the screw sleeve 3 is provided with a circulation cavity 14, and the rotary groove 13 and the circulation cavity 14 are used for enabling balls to perform external circulation inside the screw sleeve 3, so that the screw rod 1 is driven to continuously ascend or descend through rotation, and the operation stability is kept; the outer wall welding that thread 7 one end was kept away from to swivel nut 3 has fixed block 15, the structure of fixed block 15 is hollow structure, and the axis position coincidence of fixed block 15 and swivel nut 3, mounting hole 16 has been seted up to the both sides outer wall of fixed block 15, and mounting hole 16 sets up about the axis position symmetry of fixed block 15, the fixed block 15 of setting is convenient for install this ball screw pair fixedly, the mounting hole 16 that the symmetry was seted up on the outer wall of fixed block 15 both sides is convenient for the staff to use the fastener to screw up fixedly, easy dismouting is maintained.

Referring to fig. 4, a high-load low-noise composite ball screw assembly includes: the clamping plates 17 are welded on the outer walls of two ends of the screw rod 1, the clamping plates 17 are symmetrically arranged about the central axis position of the screw rod 1, the reinforcing rod 18 is connected to the inner surface of the middle of each clamping plate 17, the reinforcing rod 18 penetrates through the inside of the screw rod 1, the central axis positions of the clamping plates 17, the reinforcing rod 18 and the screw rod 1 are overlapped, and the arranged clamping plates 17 and the reinforcing rods 18 are used for improving the structural strength of the screw rod 1, so that the screw rod 1 is higher in loadable quality when carrying and pulling objects, the bending or breaking condition is not easy to occur, and the stability of the screw rod 1 during operation is improved; the outer wall of stiffener 18 is fixed with card post 19, and blocks the post 19 and be evenly distributed in turn along the outer wall of stiffener 18, and the card post 19 that sets up in turn is used for strengthening the inseparable degree of being connected between stiffener 18 and lead screw 1, makes stiffener 18 be difficult for rocking the aversion in lead screw 1 inside, reinforcing structural stability.

The working principle is as follows: for the high-bearing low-noise composite ball screw pair, firstly, the screw rod 1 is arranged in the screw sleeve 3 in a penetrating way and is connected with the rotary groove 13 in the screw sleeve 3 through the ball groove 2 on the outer wall of the screw rod 1, so that balls roll in the ball groove 2, the rotary groove 13 and the circulation cavity 14 in a rotating way, and the screw rod 1 is driven to move up and down in the screw sleeve 3, the screw sleeve 3 is fixedly installed through the fixed block 15 welded at one end and the installation holes 16 arranged on the outer walls at the two sides of the fixed block 15, the installation holes 16 are fixedly connected through fasteners, so that the screw sleeve 3 is convenient to disassemble and assemble, then, one end of the screw sleeve 3 is connected with the embedded ring 4 through the threads 7, the spiral ring 6 fixed at one end of the embedded ring 4 is matched with the structural size of the threads 7, so that the embedded ring 4 is not easy to separate after being screwed and fixed, and the embedded ring 4 shields the joint of the screw rod 1 and the screw sleeve 3 through a plurality of arc-shaped baffles 5 fixed on the outer wall at the other side, the possibility that foreign matters are drawn into the screw sleeve 3 is reduced, the screw rod 1 or the screw sleeve 3 is prevented from being damaged and scrapped due to drawing and tightening of the foreign matters, the use safety of the screw rod pair is improved, the screw sleeve 3 is also provided with a backing ring 9 and a noise reduction rubber ring 10 in a clamping mode through a clamping groove 8 and an annular groove 11, the backing ring 9 is clamped with the clamping groove 8 through a clamping block 12, the position of the noise reduction rubber ring 10 in the screw sleeve 3 is limited, the noise reduction rubber ring 10 is used for reducing noise transmission when balls roll, the friction loss between the outer wall of the screw rod 1 and the inner wall of the inner part of the screw sleeve 3 can be reduced, the service life is prolonged, finally, two clamping plates 17 are connected at two ends of the screw rod 1 through reinforcing rods 18 penetrating through the inner part of the screw rod 1, the screw rod 1 reinforces the structure of the screw rod 1 through the reinforcing rods 18 and the clamping plates 17, so that the screw rod 1 can lift or lift objects with larger mass when in operation, and improve the bearing capacity, and the reinforcing rod 18 is clamped and fixed with the inner wall of the screw rod 1 through the clamping column 19 fixed on the outer wall, so that the connection tightness of the reinforcing rod 18 and the screw rod 1 is improved, and the stability is further improved.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a compound ball screw of high-load bearing low noise formula is vice which characterized in that includes:

the screw rod (1), a ball groove (2) is formed in the outer wall of the screw rod (1), a threaded sleeve (3) is sleeved in the middle of the screw rod (1), a thread (7) is formed in the inner wall of one end of the threaded sleeve (3), one end of the threaded sleeve (3) is connected with an embedded ring (4) through the thread (7), a spiral ring (6) is fixed at the joint of the embedded ring (4) and the thread (7), and an arc-shaped baffle (5) is fixed on the outer wall of one end, away from the spiral ring (6), of the embedded ring (4);

draw-in groove (8), it sets up swivel nut (3) are close to the outer wall of screw thread (7) one end, the one end that screw thread (7) were kept away from in draw-in groove (8) is connected with ring channel (11), and ring channel (11) set up inner wall that screw thread (7) one end is close to in swivel nut (3), the inside of ring channel (11) is inlayed and is equipped with backing ring (9), the outer wall that backing ring (9) are close to ring channel (11) one end is fixed with rubber ring (10) of making an uproar that falls, backing ring (9) are fixed with fixture block (12) with the junction of draw-in groove (8).

2. The high-load low-noise composite ball screw assembly of claim 1, wherein: the embedded ring (4) is in threaded connection with the screw rod (1) through the spiral ring (6) and the threads (7), the baffle (5) is evenly distributed along the outer wall of one side of the embedded ring (4) in an equal distance mode, and the central axis positions of the embedded ring (4), the screw rod (1) and the screw sleeve (3) are overlapped.

3. The high-load low-noise compound ball screw pair according to claim 1, wherein: the backing ring (9) is connected with the clamping groove (8) in a clamping manner through a clamping block (12), the backing ring (9) is connected with the noise reduction rubber ring (10) in a bonding manner, and the backing ring (9) is matched with the noise reduction rubber ring (10) in shape and structure with the annular groove (11).

4. The high-load low-noise compound ball screw pair according to claim 1, wherein: the thread insert (3) is further provided with:

the rotary groove (13) is formed in the inner wall of the middle of the screw sleeve (3), a circulation cavity (14) is formed in the inner wall of one side of the screw sleeve (3), a fixing block (15) is welded on the outer wall, far away from one end of the thread (7), of the screw sleeve (3), and mounting holes (16) are formed in the outer walls of the two sides of the fixing block (15).

5. The high-load low-noise composite ball screw pair according to claim 4, characterized in that: the structure of the fixing block (15) is a hollow structure, the positions of the central axes of the fixing block (15) and the threaded sleeve (3) are superposed, and the mounting holes (16) are symmetrically arranged relative to the position of the central axis of the fixing block (15).

6. The high-load low-noise compound ball screw pair according to claim 1, wherein: the lead screw (1) is also provided with:

the clamping plates (17) are welded on the outer walls of the two ends of the screw rod (1), the inner surface of the middle of each clamping plate (17) is connected with a reinforcing rod (18), the reinforcing rods (18) penetrate through the screw rod (1), and clamping columns (19) are fixed on the outer walls of the reinforcing rods (18).

7. The high-load low-noise composite ball screw pair according to claim 6, characterized in that: cardboard (17) are symmetrical about the axis position of lead screw (1) and are set up, and cardboard (17), stiffener (18) and the axis position coincidence of lead screw (1) to card post (19) are even distribution in turn along the outer wall of stiffener (18).