CN210949732U

CN210949732U - Ball screw device

Info

Publication number: CN210949732U
Application number: CN201922041793.2U
Authority: CN
Inventors: 罗祖金
Original assignee: Shenzhen Srd Automation Equipment Co ltd
Current assignee: Shenzhen Srd Automation Equipment Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-07
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a ball screw device, including the lead screw body, first helicla flute has been seted up on the surface of lead screw body, and first draw-in groove has been seted up to the upper end of lead screw body, and the joint has the kelly in the first draw-in groove, and the upper end welding of kelly has first lead screw, and the second helicla flute has been seted up on the surface of first lead screw, and the second draw-in groove has been seted up to the lateral wall of kelly, and the third recess has been seted up to the inner wall of first draw-in groove, and the inner wall welding. By arranging the first screw rod, the second spiral groove, the first clamping groove, the clamping rod, the second clamping groove, the spherical clamping block, the third groove and the spring, the length of the screw rod can be increased, and the application range of the screw rod is effectively enlarged; through setting up first through-hole, sealing plug, oil storage chamber, end cap, connecting rod and turning handle, can carry out effectual lubrication to the slide in the lead screw, effectively reduced the frictional force between the internal element, ensured ball screw's life.

Description

Ball screw device

Technical Field

The utility model relates to a ball screw technical field specifically is a ball screw device.

Background

The ball screw is the most commonly used transmission element in tool machinery and precision machinery, and has the main function of converting rotary motion into linear motion or converting torque into axial repeated acting force, and has the characteristics of high precision, reversibility and high efficiency.

The utility model discloses a ball screw disclosed in grant notice No. CN206582299U, the utility model discloses a ball screw, including lead screw, nut and ball, the lead screw is the telescopic link to on this telescopic link, be provided with the excessive connecting portion of radian between the two adjacent sections poles, the nut sets up on the lead screw, and, be provided with the plastics backing plate towards one side of lead screw on the nut, be provided with on the plastics backing plate with lead screw matched with screw thread and ball return ware, placed the ball in the ball return ware, in addition, be provided with a plurality of elastic compression device between plastics backing plate and the nut. Has the advantages that: through setting up the plastics backing plate between nut and lead screw, set up elastic compression device simultaneously between plastics backing plate and nut to can effectually avoid the ball to strike on the nut and produce the problem of great noise, also can effectually prevent to appear the clearance between ball and the lead screw simultaneously, in addition, the lead screw of telescopic link design can prolong in the in-service use, has satisfied the demand of market to different length ball screw, has improved the practicality, has reduced use cost.

However, the length of the screw rod of the existing ball screw is fixed, the length of the screw rod cannot be increased according to the use requirement in use, and the use range is narrow; in addition, the ball screw cannot effectively lubricate the slide way in the screw rod during movement, and the friction of elements is easily increased, so that the service life of the ball screw is shortened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball screw device to can not carry out effectual lubrication to the slide in the lead screw when solving ball screw motion, thereby increase the problem that the component friction has reduced ball screw's life easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a ball screw device, includes the lead screw body, first helicla flute has been seted up on the surface of lead screw body, first draw-in groove has been seted up to the upper end of lead screw body, the joint has the kelly in the first draw-in groove, the upper end welding of kelly has first lead screw, the second helicla flute has been seted up on the surface of first lead screw, the second draw-in groove has been seted up to the lateral wall of kelly, the third recess has been seted up to the inner wall of first draw-in groove, the inner wall welding of third recess has the spring, the other end welding of spring has spherical fixture block, spherical fixture block slip joint is in the second draw-in groove, there is the nut on the surface of lead screw body through bolted.

Preferably, an oil storage chamber is formed in the inner wall of the slide way, and a plug is connected to the inner wall of the oil storage chamber through threads.

Preferably, the outer side of the plug is welded with a connecting rod, and the outer end of the connecting rod is welded with a rotating handle.

Preferably, a first through hole is formed in the inner wall of the top of the oil storage chamber, and a sealing plug is tightly clamped in the first through hole.

Preferably, the sealing plug is made of butadiene acrylonitrile rubber, and the sealing plug is cylindrical.

Preferably, the diameter of the ball-shaped fixture block is not greater than the inner diameter of the third groove.

Preferably, the horizontal section of the first clamping groove is square.

Compared with the prior art, the beneficial effects of the utility model are that: the ball screw device can increase the length of the screw rod by arranging the first screw rod, the second spiral groove, the first clamping groove, the clamping rod, the second clamping groove, the spherical clamping block, the third groove and the spring, so that the application range of the screw rod is effectively enlarged; through setting up first through-hole, sealing plug, oil storage chamber, end cap, connecting rod and turning handle, can carry out effectual lubrication to the slide in the lead screw, effectively reduced the frictional force between the internal element, ensured ball screw's life.

Drawings

FIG. 1 is a front cross-sectional view of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1 according to the present invention;

fig. 3 is an enlarged view of B in fig. 1 according to the present invention.

In the figure: 1 a first screw rod; 2 a second helical groove; 3 a first card slot; 4, clamping a rod; 5, a nut; 6 a first helical groove; 7, a screw rod body; 8, a second card slot; 9, spherical fixture blocks; 10 a third groove; 11 a spring; 12 a first via hole; 13 sealing plug; 14 an oil reservoir chamber; 15, plugging the plug; 16 connecting rods; 17 turning a handle; 18 slide way.

Detailed Description

Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a ball screw device, includes lead screw body 7, and first helicla flute 6 has been seted up on the surface of lead screw body 7, and first draw-in groove 3 has been seted up to the upper end of lead screw body 7, and the horizontal cross-section of first draw-in groove 3 is the square, is favorable to avoiding first lead screw 1 to take place to rotate, has improved the stability that first lead screw 1 is connected with lead screw body 7.

Referring to fig. 1 and 2, a clamping rod 4 is clamped in the first clamping groove 3, and the horizontal section of the clamping rod 4 is also square, so that the clamping rod is tightly clamped with the first clamping groove 3. The upper end of the clamping rod 4 is welded with a first screw rod 1, and the horizontal section size of the first screw rod 1 is the same as that of the screw rod body 7.

Referring to fig. 1 and 2, the surface of the first lead screw 1 is provided with a second spiral groove 2, the size of the second spiral groove 2 is the same as that of the first spiral groove 6, and after the first lead screw 1 is installed and connected with the lead screw body 7, the second spiral groove 2 is communicated with the first spiral groove 6, so that the nut 5 can smoothly move on the first lead screw 1 and the lead screw body 7.

Referring to fig. 1 and 2, a second locking groove 8 is formed in the side wall of the locking rod 4, and the second locking groove 8 is a spherical groove so as to ensure better locking with the spherical locking block 9. Third recess 10 has been seted up to the inner wall of first draw-in groove 3, and the inner wall welding of third recess 10 has spring 11, and the other end welding of spring 11 has spherical fixture block 9, and the diameter of spherical fixture block 9 is not more than the internal diameter of third recess 10, and spherical fixture block 9 sliding joint is in second draw-in groove 8.

Referring to fig. 1 and 2, the spring 11 may eject half of the ball-shaped latch 9 out of the third groove 10 in a natural state, and when the rod 4 is inserted into the first slot 3, the rod 4 may achieve stability of installation when the ball-shaped latch 9 is latched into the second slot 8. Through setting up first lead screw 1, second helicla flute 2, first draw-in groove 3, kelly 4, second draw-in groove 8, spherical fixture block 9, third recess 10 and spring 11, can increase the length of lead screw, effectively promoted the application range of lead screw.

Referring to fig. 1 and 3, a nut 5 is connected to the surface of the lead screw body 7 through a bolt, and a slide way 18 is arranged in the nut 5.

Referring to fig. 1 and 3, an oil storage chamber 14 is formed in an inner wall of the slide 18, solid lubricating oil is stored in the oil storage chamber 14, a plug 15 is connected to the inner wall of the oil storage chamber 14 through a thread, and the plug 15 is tightly connected to the oil storage chamber 14 through a thread.

Referring to fig. 1 and 3, the plug 15 is rotated clockwise to move to the left, so that the solid lubricant in the reservoir 14 is squeezed into the slide 18 on the left side of the reservoir 14.

Referring to fig. 1 and 3, a connecting rod 16 is welded on the outer side of the plug 15, and a rotating handle 17 is welded on the outer end of the connecting rod 16, so that the rotating handle 17 is beneficial to rotating the plug 15.

Referring to fig. 1 and 3, a first through hole 12 is formed in the inner wall of the top of the oil storage chamber 14, the first through hole 12 penetrates through the upper end of the nut 5, the first through hole 12 is used for adding solid lubricating oil into the oil storage chamber 14, and a sealing plug 13 is tightly clamped in the first through hole 12.

Referring to fig. 1 and 3, the sealing plug 13 is made of nitrile rubber, the sealing plug 13 is cylindrical, and the first through hole 12 can be blocked by the sealing plug 13 to prevent external impurities from entering.

Referring to fig. 1 and 3, when the ball screw feels moving hard in use, the sealing plug 13 is pulled out, the solid lubricating oil is plugged into the first through hole 12 through the first through hole 12, then the solid lubricating oil is pushed into the oil storage chamber 14 by using the lower end of the sealing plug 13, then the sealing plug 13 is plugged, the rotating handle 17 is screwed clockwise to drive the connecting rod 16 to rotate, the connecting rod 16 further drives the plug 15 to move leftwards along the inner wall of the oil storage chamber 14, and therefore a certain amount of the solid lubricating oil is pushed into the slideway 18. Through setting up first through-hole 12, sealing plug 13, oil storage chamber 14, end cap 15, connecting rod 16 and turning handle 17, can carry out effectual lubrication to slide 18 in the lead screw, effectively reduced the frictional force between the internal element, ensured ball screw's life.

The utility model discloses when concrete implementation: when the ball screw feels moving difficultly in use, the sealing plug 13 is pulled out, the solid lubricating oil is plugged into the first through hole 12 through the first through hole 12, then the solid lubricating oil is pushed into the oil storage chamber 14 by the lower end of the sealing plug 13 to plug the sealing plug 13 tightly, then the rotating handle 17 is screwed clockwise to drive the connecting rod 16 to rotate, and the connecting rod 16 further drives the plug 15 to move leftwards along the inner wall of the oil storage chamber 14, so that a certain amount of the solid lubricating oil is pushed into the slide way 18. Through setting up first through-hole 12, sealing plug 13, oil storage chamber 14, end cap 15, connecting rod 16 and turning handle 17, can carry out effectual lubrication to slide 18 in the lead screw, effectively reduced the frictional force between the internal element, ensured ball screw's life. When the lead screw is not long enough when using, insert first draw-in groove 3 with the kelly 4 of 1 lower extreme of first lead screw, kelly 4 at first can extrude the third recess 10 with spherical fixture block 9 back, when third recess 10 aligns with second draw-in groove 8, accomplish the installation promptly with spherical fixture block 9 extrusion in second draw-in groove 8 under the effect of spring 11 reset force.

Claims

1. A ball screw device includes a screw body (7), characterized in that: the surface of the screw rod body (7) is provided with a first spiral groove (6), the upper end of the screw rod body (7) is provided with a first clamping groove (3), a clamping rod (4) is clamped in the first clamping groove (3), a first screw rod (1) is welded at the upper end of the clamping rod (4), a second spiral groove (2) is arranged on the surface of the first screw rod (1), a second clamping groove (8) is arranged on the side wall of the clamping rod (4), a third groove (10) is formed in the inner wall of the first clamping groove (3), a spring (11) is welded on the inner wall of the third groove (10), the other end of the spring (11) is welded with a spherical clamping block (9), the spherical clamping block (9) is clamped in the second clamping groove (8) in a sliding way, the surface of the screw rod body (7) is connected with a nut (5) through a bolt, and a slide way (18) is arranged in the nut (5).

2. The ball screw device according to claim 1, wherein: an oil storage chamber (14) is formed in the inner wall of the slide way (18), and a plug (15) is connected to the inner wall of the oil storage chamber (14) through threads.

3. A ball screw device according to claim 2, wherein: the outer side of the plug (15) is welded with a connecting rod (16), and the outer end of the connecting rod (16) is welded with a rotating handle (17).

4. A ball screw device according to claim 2, wherein: first through-hole (12) have been seted up to the top inner wall of oil storage chamber (14), closely joint has sealing plug (13) in first through-hole (12).

5. The ball screw device according to claim 4, wherein: the sealing plug (13) is made of butadiene acrylonitrile rubber, and the sealing plug (13) is cylindrical.

6. The ball screw device according to claim 1, wherein: the diameter of the spherical fixture block (9) is not larger than the inner diameter of the third groove (10).

7. The ball screw device according to claim 1, wherein: the horizontal section of the first clamping groove (3) is square.