CN213411260U - Ball screw prestretches structure - Google Patents
Ball screw prestretches structure Download PDFInfo
- Publication number
- CN213411260U CN213411260U CN202021812936.1U CN202021812936U CN213411260U CN 213411260 U CN213411260 U CN 213411260U CN 202021812936 U CN202021812936 U CN 202021812936U CN 213411260 U CN213411260 U CN 213411260U
- Authority
- CN
- China
- Prior art keywords
- ball screw
- screw body
- spacer
- supporting seat
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model discloses a ball screw prestretches structure, including motor, lock nut, antifriction bearing, accept nut and third spacer, motor and supporting seat interconnect, and install the shaft coupling on the supporting seat to shaft coupling and ball screw body interconnect, lock nut installs at ball screw body surface, and first nut and first spacer interconnect to first spacer installs and connect to press to cover, antifriction bearing installs on the supporting seat, and antifriction bearing and ball screw body interconnect, the second spacer is installed on the supporting seat, and the second spacer accepts the nut with antifriction bearing interconnect and installs on the ball screw body. This ball screw prestretches structure absorbs the device of ball screw body thermal elongation through the deformation that utilizes the dish spring to cool down through water-cooled mode, thereby can effectual assurance device's stability when the device carries out the during operation.
Description
Technical Field
The utility model relates to a digit control machine tool transmission technical field specifically is a ball screw prestretches structure.
Background
The ball screw body is a mechanical transmission device of a numerical control machine tool feeding system, the precision of the ball screw body can directly influence the precision of the numerical control machine tool, the traditional ball screw pre-stretching structure is that locking nuts at two ends of the ball screw body are used for applying certain pulling force to the length direction of the ball screw body according to requirements during assembly so as to adjust the reverse tightness of the positive nut and the negative nut of the ball screw body, the purpose is to effectively eliminate the thermal extension of the ball screw body caused by temperature rise so as to obtain stable movement and positioning precision, and the resistance of a saddle or a workbench is not displaced when being greater than the elastic moment of the ball screw body and the nuts during micro-feeding.
However, along with the continuous operation of the ball screw body, when the accumulated elastic torque generated by the receiving nut exceeds the resistance of the workbench or the saddle, displacement can be generated, when the ball screw body is thermally elongated, the pretension force of the previous ball screw body can be reduced so as to disappear, and the pretension function is lost, so that the transmission precision and the positioning precision of the ball screw body are influenced, the processing precision of the numerical control machine tool is greatly reduced, and a cooling device is lacked, so that the heat dissipation effect of the device is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ball screw prestretches structure to propose the during operation among the above-mentioned background art and easily produce the displacement and lose the function that prestretches, lack the problem that the heat sink influences the device radiating effect.
In order to achieve the above object, the utility model provides a following technical scheme: a ball screw pre-stretching structure comprises a motor, a first nut, a rolling bearing, a bearing nut and a third spacer, wherein the motor is connected with a supporting seat, a coupler is arranged on the supporting seat and is connected with a ball screw body, the ball screw body is connected with the supporting seat, a locking nut is arranged on the outer surface of the ball screw body, the first nut is connected with the first spacer, the first spacer is arranged on a connecting gland, the connecting gland is connected with the supporting seat, the rolling bearing is arranged on the supporting seat and is connected with the ball screw body, the ball screw body is connected with a second spacer, the second spacer is arranged on the supporting seat and is connected with the rolling bearing, the bearing nut is arranged on the ball screw body, and a bearing base is arranged on the outer surface of the ball screw body, and bearing base and connecting bearing interconnect, third spacer and connecting bearing interconnect, and third spacer and bearing base interconnect to third spacer and dish spring interconnect, dish spring and bearing base interconnect simultaneously, dish spring and fourth spacer interconnect, and fourth spacer and ball screw body interconnect to install lock nut on the ball screw body, lock nut and seal ring laminate each other, and lock nut and fourth spacer laminate each other, the supporting seat laminates each other with the cooler bin, and has placed the motor on the cooler bin to install the axis of rotation on the cooler bin, install inlet tube and outlet pipe on the cooler bin simultaneously.
Preferably, an L-shaped groove is formed in the bottom end of the supporting seat, and the outer surface of the supporting seat is smooth.
Preferably, the ball screw body forms a rotating mechanism with the supporting seat through a rolling bearing, and the connecting gland mounted at the outer end of the ball screw body is in a circular truncated cone shape.
Preferably, the axis of rotation includes stirring board, first belt pulley and second belt pulley, and installs the stirring board in the axis of rotation to install first belt pulley in the axis of rotation, axis of rotation and second belt pulley interconnect simultaneously.
Preferably, the number of the first belt pulley and the number of the second belt pulley are 2, and the first belt pulley and the cooling box form a rotating mechanism through a rotating shaft.
Preferably, the stirring plates are symmetrically and alternately distributed around the center of the rotating shaft, and the outer surfaces of the stirring plates are smooth.
Compared with the prior art, the beneficial effects of the utility model are that: according to the ball screw pre-stretching structure, the device for absorbing the thermal extension of the ball screw body by utilizing the deformation of the disc spring is cooled in a water cooling mode, so that the stability of the device can be effectively ensured when the device works;
1. as long as the deformation of the disc spring is far greater than the thermal elongation of the ball screw body, the ball screw body always has pretensioning force, and the defects caused by the thermal elongation of the ball screw body can be overcome;
2. through the rotation of axis of rotation, realize driving the stirring board and rotate to the realization stirs the water in the cooler bin, thereby realizes continuously even cooling to the device.
Drawings
Fig. 1 is a schematic view of the cross-sectional structure of the main view of the motor of the present invention;
FIG. 2 is a schematic top view of a cross-sectional structure of the first pulley of the present invention;
FIG. 3 is a schematic view of the sectional structure of the cooling box of the present invention;
fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.
In the figure: 1. a motor; 2. a supporting seat; 3. a coupling; 4. a first nut; 5. connecting a gland; 6. a first spacer sleeve; 7. a rolling bearing; 8. a second spacer sleeve; 9. a ball screw body; 10. receiving the nut; 11. a bearing mount; 12. connecting a bearing; 13. a third spacer sleeve; 14. a disc spring; 15. a fourth spacer sleeve; 16. locking the nut; 17. a sealing gasket; 18. a cooling tank; 19. a rotating shaft; 1901. a stirring plate; 1902. a first pulley; 1903. a second pulley; 20. a water inlet pipe; 21. and (5) discharging a water pipe.
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. 1-4, the present invention provides a technical solution: a ball screw prestretching structure comprises a motor 1, a supporting seat 2, a coupler 3, a first nut 4, a connecting gland 5, a first spacer 6, a rolling bearing 7, a second spacer 8, a ball screw body 9, a receiving nut 10, a bearing base 11, a connecting bearing 12, a third spacer 13, a disc spring 14, a fourth spacer 15, a locking nut 16, a sealing washer 17, a cooling box 18, a rotating shaft 19, a stirring plate 1901, a first belt pulley 1902, a second belt pulley 1903, a water inlet pipe 20 and a water outlet pipe 21, wherein the motor 1 is connected with the supporting seat 2, the coupler 3 is arranged on the supporting seat 2, the coupler 3 is connected with the ball screw body 9, the ball screw body 9 is connected with the supporting seat 2, the first nut 4 is arranged on the outer surface of the ball screw body 9, the first nut 4 is connected with the first spacer 6, the first spacer 6 is arranged on the connecting gland 5, meanwhile, the connecting gland 5 is connected with the supporting seat 2, the rolling bearing 7 is mounted on the supporting seat 2, the rolling bearing 7 is connected with the ball screw body 9, the ball screw body 9 is connected with the second spacer 8, the second spacer 8 is mounted on the supporting seat 2, the second spacer 8 is connected with the rolling bearing 7, the receiving nut 10 is mounted on the ball screw body 9, the bearing base 11 is mounted on the outer surface of the ball screw body 9, the bearing base 11 is connected with the connecting bearing 12, the third spacer 13 is connected with the bearing base 11, the third spacer 13 is connected with the disc spring 14, the disc spring 14 is connected with the bearing base 11, the disc spring 14 is connected with the fourth spacer 15, the fourth spacer 15 is connected with the ball screw body 9, and the locking nut 16 is mounted on the ball screw body 9, lock nut 16 and seal ring 17 are laminated each other, and lock nut 16 and fourth spacer 15 are laminated each other, and supporting seat 2 and cooler bin 18 are laminated each other, and have placed motor 1 on the cooler bin 18 to install axis of rotation 19 on the cooler bin 18, install inlet tube 20 and outlet pipe 21 on the cooler bin 18 simultaneously.
In the embodiment, the bottom end of the supporting seat 2 is provided with an L-shaped groove, and the outer surface of the supporting seat 2 is smooth, so that the friction force between the supporting seat 2 and the cooling box 18 is reduced conveniently by the structure;
the ball screw body 9 and the supporting seat 2 form a rotating mechanism through the rolling bearing 7, and the connecting gland 5 arranged at the outer end of the ball screw body 9 is in a round table shape, so that the ball screw body 9 can freely rotate while the ball screw body 9 is supported and limited through the structure;
the rotating shaft 19 comprises a stirring plate 1901, a first belt pulley 1902 and a second belt pulley 1903, the stirring plate 1901 is mounted on the rotating shaft 19, the first belt pulley 1902 is mounted on the rotating shaft 19, and the rotating shaft 19 and the second belt pulley 1903 are connected with each other at the same time, so that the stirring plates 1901 at two ends are driven to rotate by the motor 1, and water is stirred;
the number of the first belt pulley 1902 and the second belt pulley 1903 is 2, which are symmetrically arranged about the center of the cooling box 18, and the first belt pulley 1902 and the cooling box 18 form a rotating mechanism through the rotating shaft 19, so that the first belt pulley 1902 can freely rotate around the rotating shaft 19 through the above structure;
stirring board 1901 is the crisscross distribution of symmetry about the center of axis of rotation 19, and the outer surface of stirring board 1901 sets up to smooth, through above-mentioned structure, is convenient for stir the water in the cooler bin 18 through stirring board 1901 to the realization carries out more even cooling to the device.
The working principle is as follows: the elastic force stored after the disc spring 14 in fig. 3 deforms is taken as a main source of pretightening force, the ball screw body 9 is pretightened by pretightening the disc spring 14 by a certain force in advance, when the ball screw body 9 works to generate thermal elongation, the pretensioning value of the ball screw body 9 is kept unchanged, so that the influence caused by the thermal elongation of the ball screw body 9 is eliminated, the deformation of the disc spring 14 is utilized to absorb the thermal elongation of the ball screw body 9, experiments and checking calculation show that as long as the deformation of the disc spring is far greater than the thermal elongation of the ball screw body 9, the ball screw body 9 always has pretensioning force, the defects caused by the thermal elongation of the ball screw body 9 can be overcome, the processing precision is ensured, the generation of defective products caused by the thermal elongation of the ball screw body 9 is reduced, when the motor 1 in fig. 1 starts to work, the rotating shaft connected with the output end of the motor 1 drives the first belt pulley 1902 and the second belt pulley 1903 which are installed at the upper end of the rotating shaft Because the first belt pulley 1902 and the second belt pulley 1903 start to rotate, the stirring plate 1901 coaxially connected with the first belt pulley is driven to start to rotate, and along with the rotation of the stirring plate 1901, the stirring plate 1901 starts to stir the water in the cooling tank 18, so that the device is cooled.
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 (6)
1. The utility model provides a ball screw prestretches structure, includes motor (1), first nut (4), antifriction bearing (7), accepts nut (10) and third spacer (13), its characterized in that: the motor (1) is connected with the supporting seat (2), the supporting seat (2) is provided with the coupler (3), the coupler (3) is connected with the ball screw body (9), the ball screw body (9) is connected with the supporting seat (2), the first nut (4) is arranged on the outer surface of the ball screw body (9), the first nut (4) is connected with the first spacer sleeve (6), the first spacer sleeve (6) is arranged on the connecting gland (5), the connecting gland (5) is connected with the supporting seat (2), the rolling bearing (7) is arranged on the supporting seat (2), the rolling bearing (7) is connected with the ball screw body (9), the ball screw body (9) is connected with the second spacer sleeve (8), the second spacer sleeve (8) is arranged on the supporting seat (2), the second spacer (8) is connected with the rolling bearing (7), the receiving nut (10) is installed on the ball screw body (9), the bearing base (11) is installed on the outer surface of the ball screw body (9), the bearing base (11) is connected with the connecting bearing (12), the third spacer (13) is connected with the bearing base (11), the third spacer (13) is connected with the disc spring (14), the disc spring (14) is connected with the bearing base (11), the disc spring (14) is connected with the fourth spacer (15), the fourth spacer (15) is connected with the ball screw body (9), the ball screw body (9) is provided with the locking nut (16), the locking nut (16) is attached to the sealing washer (17), and lock nut (16) and fourth spacer (15) are laminated each other, supporting seat (2) and cooler bin (18) are laminated each other, and have placed motor (1) on cooler bin (18) to install axis of rotation (19) on cooler bin (18), install inlet tube (20) and outlet pipe (21) on cooler bin (18) simultaneously.
2. The ball screw pre-tensioning structure according to claim 1, wherein: an L-shaped groove is formed in the bottom end of the supporting seat (2), and the outer surface of the supporting seat (2) is smooth.
3. The ball screw pre-tensioning structure according to claim 1, wherein: the ball screw body (9) and the supporting seat (2) form a rotating mechanism through a rolling bearing (7), and a connecting gland (5) installed at the outer end of the ball screw body (9) is in a circular truncated cone shape.
4. The ball screw pre-tensioning structure according to claim 1, wherein: the rotation axis (19) includes stirring board (1901), first belt pulley (1902) and second belt pulley (1903), and installs stirring board (1901) on rotation axis (19) to install first belt pulley (1902) on rotation axis (19), rotation axis (19) and second belt pulley (1903) interconnect simultaneously.
5. The ball screw pre-tensioning structure according to claim 4, wherein: the first belt pulley (1902) and the second belt pulley (1903) are symmetrically arranged about the center of the cooling box (18), and the first belt pulley (1902) and the cooling box (18) form a rotating mechanism through a rotating shaft (19).
6. The ball screw pre-tensioning structure according to claim 4, wherein: the stirring plates (1901) are symmetrically and alternately distributed around the center of the rotating shaft (19), and the outer surfaces of the stirring plates (1901) are smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021812936.1U CN213411260U (en) | 2020-08-26 | 2020-08-26 | Ball screw prestretches structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021812936.1U CN213411260U (en) | 2020-08-26 | 2020-08-26 | Ball screw prestretches structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213411260U true CN213411260U (en) | 2021-06-11 |
Family
ID=76258582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021812936.1U Active CN213411260U (en) | 2020-08-26 | 2020-08-26 | Ball screw prestretches structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213411260U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319634A (en) * | 2021-06-30 | 2021-08-31 | 厦门大金机械有限公司 | Machine tool screw rod prestretching installation mechanism |
-
2020
- 2020-08-26 CN CN202021812936.1U patent/CN213411260U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319634A (en) * | 2021-06-30 | 2021-08-31 | 厦门大金机械有限公司 | Machine tool screw rod prestretching installation mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213411260U (en) | Ball screw prestretches structure | |
| CN206432845U (en) | A kind of permanent-magnet brushless DC electric machine of strength radiating | |
| CN213179556U (en) | High-efficient radiating cooler cooling tube | |
| CN212454707U (en) | Spacing clamping mechanism of aerogenerator radiator processing | |
| CN209763826U (en) | A cylinder cooler for fertilizer production | |
| CN212063944U (en) | Photovoltaic photo-thermal assembly adopting heat pipe for heat dissipation | |
| CN215040496U (en) | Novel electronic gear copper spline press | |
| CN211009738U (en) | Worm gear reducer convenient for heat dissipation | |
| CN217237834U (en) | Thermal deformation and Vicat softening point temperature measuring device | |
| CN216947168U (en) | Workpiece rack device with water cooling function | |
| CN210173123U (en) | Cooling device of vertical machining center | |
| CN110686533A (en) | Anhydrous heat energy secondary utilization device for thermal power plant | |
| CN219072938U (en) | Surfactant reactor | |
| CN211501365U (en) | Transmission bearing for large-scale construction equipment | |
| CN220016002U (en) | Large-torque right-angle output speed reducer | |
| CN219994294U (en) | Helical tooth high-precision planetary reducer | |
| CN210464108U (en) | Open type cooling tower for strong alkali resistant glass fiber reinforced plastics | |
| CN115681706A (en) | Translation temperature measuring device with compact structure | |
| CN215980692U (en) | Hydraulic torque converter box of diesel locomotive | |
| CN215966335U (en) | Main spindle box with heat dissipation mechanism | |
| CN213360961U (en) | Worm gear reducer with heat dissipation function | |
| CN217422138U (en) | Efficient heat dissipation gear speed reducer | |
| CN208858650U (en) | A kind of numerical control fan radiating combination unit | |
| CN221049104U (en) | Energy-saving motor control press | |
| CN220857776U (en) | Automatic vertical motor lime buffer box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |