KR101874553B1 - Bearing fixing apparatus for lead ball screw and transport apparatus comprising the same - Google Patents

Bearing fixing apparatus for lead ball screw and transport apparatus comprising the same Download PDF

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Publication number
KR101874553B1
KR101874553B1 KR1020170132968A KR20170132968A KR101874553B1 KR 101874553 B1 KR101874553 B1 KR 101874553B1 KR 1020170132968 A KR1020170132968 A KR 1020170132968A KR 20170132968 A KR20170132968 A KR 20170132968A KR 101874553 B1 KR101874553 B1 KR 101874553B1
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KR
South Korea
Prior art keywords
bearing
screw
fixing
fastening
fixed
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KR1020170132968A
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Korean (ko)
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이종기
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이종기
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Publication of KR101874553B1 publication Critical patent/KR101874553B1/en
Priority to PCT/KR2018/011311 priority Critical patent/WO2019059733A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
    • F16H25/20—Screw mechanisms
    • F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
    • F16H2025/2481—Special features for facilitating the manufacturing of spindles, nuts, or sleeves of screw devices

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The present invention relates to a bearing fixing apparatus for a lead ball screw and a transport apparatus including the same, capable of coupling an end of a screw to a fixed end and a support end without processing the end of the screw. The present invention includes: a screw; a fixed end rotationally supporting one end of the screw; a support end rotationally supporting the other end of the screw; a motor connected to the one end of the screw; a table coupled to the screw through a ball nut; and a base for supporting the fixed end and the support end and guiding the table. The fixed end and the support end include bearing fixing devices for supporting the screw, respectively. The bearing fixing device includes: a fixed body, through which the screw passes, for supporting a bearing; and a fastening member fastened to the inside of the fixed body from the outer periphery of the fixed body such that an end of the fastening member adheres to the outer periphery of a threaded bar. The rotated screw does not move in the axial direction and the radial direction due to the fastening member located on the threaded bar.

Description

Technical Field The present invention relates to a bearing fixing device for a lead ball screw and a conveying device including the same.

The present invention relates to a bearing fixing device for a lead ball screw and a transfer device including the same.

The ball screw is one of the devices for changing the direction of motion and is widely used for position control by being connected with motors in various automation facilities. The ball screw includes an elongated bar-shaped screw having an outer circumferential surface formed with a screw, a nut coupled to the screw, and a steel ball positioned between the threaded bar of the screw and the nut of the nut.

One end and the other end of the screw are rotatably supported by bearings and can be divided into a fixed end portion and a support end portion depending on a supporting method. A bearing shaft, to which both ends of the screw are coupled, is located at the fixed end and the support end, and the bearing shaft is coupled to the bearing inner ring. In order to prevent the screw from moving, the end of the screw was machined into a polygonal shape or a screw groove on the side thereof, and then the screw and the bearing shaft were joined by a fastening means. Manufacturing costs have increased due to technical difficulties with screw end machining.

Patent Registration No. 10-1383815 (April 4, 2014) Patent Registration No. 10-1648808 (2016.08.10.)

The present invention provides a technique by which the end of the screw, which is engaged with the fixed end and the support end, can be engaged without machining.

A bearing fixing device for a lead ball screw according to an embodiment of the present invention includes a fixed body through which a screw can pass and which is in contact with a bearing and an end fixed to the screw thread of the screw, Wherein the screw is coupled to the fixed body contacting the bearing and the fixed body so that the axial movement of the screw is not generated by the coupling member located in the threaded hole.

The fixing body may include a fixing member having a fastening hole through which the fastening member passes, a supporting member contacting the inner ring side of the bearing, and a supporting member connected to the fixing member and in contact with the inner circumference of the bearing, The outer peripheral diameter of the fixing member is larger than the outer peripheral diameter of the supporting member and the inner peripheral diameter of the fixing member and the inner peripheral diameter of the supporting member may be the same.

Wherein the bearing includes a thrust bearing and a deep groove ball bearing, the fixing member abuts the inner ring side surface of the deep groove ball bearing, and the support member contacts the inner ring of the deep groove ball bearing and the turning wheel of the thrust bearing. have.

One side of the fixing body is in contact with the inner ring side of the bearing, and the inner circumference of the fixing body is in contact with the outer circumference of the screw.

The fixed body and the coupling member are formed as a pair and face each other with the bearing interposed therebetween, and the pair of fixing bodies can press the bearing in a direction facing each other.

According to an aspect of the present invention, there is provided a transfer device including a screw, a fixed end rotatably supporting one end of the screw, a support end rotatably supporting the other end of the screw, A table coupled to the screw via a motor and a ball nut, and a base for supporting the fixed end and the support end and guiding the movement of the table, wherein the fixed end and the support end each comprise a bearing Wherein the bearing fixing device includes a fixing body through which the screw passes and which supports the bearing and a fastening member fastened inwardly from an outer periphery of the fastening body and closely contacted with the periphery of the screw thread of the screw, And the screw, which is rotated by the fastening member located in the threaded thread, It is not.

The bearing may be any one selected from the group consisting of a thrust bearing, an angular contact ball bearing, a deep groove ball bearing, a roller bearing, Lt; / RTI >

The fixed end includes a bearing, a fixed end housing coupled to the base and having a bearing space in which the bearing is located, and the bearing fixing device, and the bearing space includes a first seating space and a second seating space And the peripheral diameter of the second seating space may be greater than the peripheral diameter of the first seating space.

Wherein the bearing includes a thrust bearing and a deep groove ball bearing sequentially disposed outwardly from the inside of the fixed end housing and a fixing body of the bearing fixing device is formed with a fastening hole through which the fastening member passes, And a supporting member connected to the fixing member and having an outer periphery in contact with an inner periphery of an inner ring of the deep groove ball bearing and an inner periphery of a rotary wheel of the thrust bearing.

Wherein the bearing includes an angular contact ball bearing, a fixing body of the bearing fixing device is formed with a fastening hole through which the fastening member passes, and one side surface of the fastening body is in contact with a side surface of the inner ring of the angular contact ball bearing .

The support end portion includes a bearing, a support end housing coupled to the base and having a bearing space in which the bearing is located, and the bearing fixing device, wherein an outer periphery of the bearing fixing device at the support end It may not touch the circumference.

Wherein the bearing includes a deep groove ball bearing, a fastening hole through which the fastening member passes is formed in the fastening body, a side surface of the fastening body is in contact with a side surface of the inner ring of the deep groove ball bearing, The inner circumference can be in contact with the outer circumference of the screw.

The fixing body may rotate along the threaded bobbin with the fastening member guide in a state where the fastening member is fastened to the threaded hole to press-fix the bearing and support the screw.

According to the embodiment of the present invention, the fastening members located at both ends of the screw penetrate the fastening body and are positioned on the threaded screw of the screw, and the fastening body is brought into contact with the bearing, so that the rotating screw does not move in the axial direction, And the position of the conveyed object can be precisely controlled.

According to the embodiment of the present invention, since the end of the fastening member passing through the fixed body is in contact with the periphery of the threaded screw of the screw, it is not necessary to process the engaging process portion (multiple face, fastening hole) for engaging the fastening member with the screw. Therefore, it is possible to reduce the cost of the screw machining, thereby reducing the manufacturing cost of the transfer device.

According to the embodiment of the present invention, since screws are formed only on the outer circumference of the screw, the screw can be easily machined and the screw is coupled with the bearing fixing device by the fastening member fastened to the fastening body.

According to the embodiment of the present invention, in a state where the fastening member is fastened to the threaded boss, the fastening body can be rotated along the threaded boss by the fastening member located on the threaded boss and press the bearing. Therefore, the fixing body can press-fix the bearing inside the housing while supporting the screw. The stable rotation of the bearing can improve the turning force of the screw.

According to the embodiment of the present invention, the bearing of the fixed end includes a thrust bearing and a deep groove ball bearing, and the outer periphery of the support member of the fixed body is formed with an inner circumference of the inner ring of the deep groove ball bearing, Touch. Thus, the rotating wheel is prevented from moving in a direction perpendicular to the screw.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a transfer device according to one embodiment of the present invention.
2 is an enlarged end view of the fixed end of Fig.
3 is an exploded sectional view of Fig.
4 is an enlarged view of a portion A in Fig.
Figure 5 is a magnified view of the support end of Figure 1;
6 is an exploded sectional view of Fig.
7 is an enlarged view of a portion B in Fig.
Figure 8 is a schematic view of another embodiment of the fixed end of Figure 2;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated with like reference numerals throughout the specification.

The bearing fixing device according to the embodiment of the present invention can be applied to a conveying device which is an embodiment of the present invention. Hereinafter, a conveying device to which a bearing fixing device is applied will be described.

A transport apparatus according to an embodiment of the present invention will now be described with reference to Figs. 1 to 7. Fig.

1 is a schematic enlarged view of the fixed end of Fig. 1, Fig. 3 is an exploded sectional view of Fig. 2, Fig. 4 is an enlarged view of a portion A of Fig. 2 Fig. 5 is an enlarged view of the support end of Fig. 1, Fig. 6 is an exploded sectional view of Fig. 5, and Fig. 7 is an enlarged view of part B of Fig.

1 to 7, a conveying apparatus 1 according to the present embodiment includes a base 11, a table 21, a screw 31, a fixed end 40, a support end 50, 70). The fixed end portion 40 and the support end portion 50 according to the present embodiment each include a bearing fixing device 43 and 53 and are fixed to the end portion of the screw 31 which is engaged with the fixed end portion 40 and the support end portion 50 So that they can be joined without being processed. In addition, the bearing fixing devices 43 and 53 prevent the screw 31 from moving in the axial direction (the longitudinal direction of the screw) and the radial direction (the direction perpendicular to the longitudinal direction of the screw) .

The base 11 has a predetermined length and width, and the fixed end 40 is disposed on one side of the upper surface and the supporting end 50 is disposed on the other side. On both sides in the width direction of the base 11, a rail 12 is arranged. On the other hand, the main body of a machine tool or the like may be the base 11.

The table 21 is placed on the base 11 and both sides of the table 21 are connected to the rail 12 through the guide block 22. [ The table 21 can be linearly moved along the rail 12 by an external force. Workpieces such as workpieces, work tools, workpieces, and the like can be placed on the table 21, and the table 21 can be moved linearly along the rails 12 to transfer the workpieces.

The screw 31 has a predetermined length, one end rotatably supports the fixed end 40, and the other end rotatably supports the support end 50. The screw 31 is processed by a rolling method or a grinding method, and the thread 311 is formed on the outer circumference along the longitudinal direction. The screw (31) is not provided with a screw groove, a polygonal surface, or the like for fixing the screw (31). Therefore, only the thread 311 is formed on the screw 31 according to the present embodiment. A ball nut 32 connected to the lower surface of the table 21 is coupled to the screw 31. A ball screw 32 is connected between the threaded bosses (not shown) of the ball nut 32 and the threaded bosses 311 of the screw 31, . The table 21 is connected to the rail 12 so that the ball nut 32 can move linearly along the length of the screw 31 when the screw 31 rotates. The table 21 can move linearly along the rail 12 by the linear movement of the ball nut 32. [

The fixed end (40) includes a fixed end housing (41), a bearing (42) and a bearing securing device (43).

The fixed stage housing 41 is disposed on the upper surface of one side in the longitudinal direction of the base 11 and is detachably coupled to the fixing means (not shown). A bearing space 411 is formed inside the fixed end housing 41 and the bearing space 411 is open to both sides of the fixed end housing 41.

The bearing space 411 is formed by a first seating space 411a, a second seating space 411b, and a connection space 411c. The second seating space 411b is formed at a predetermined depth from both sides of the fixed end housing 41 and the first seating space 411a is formed in the second seating space 411b inside the fixed end housing 41, And is formed at a predetermined depth. The first seating space 411a is connected through a connection space 411c. The first seating space 411a and the second seating space 411b are formed symmetrically to the left and right sides with respect to the connection space 411c. The diameter of the first seating space 411a is smaller than the diameter of the second seating space 411b and the diameter of the connecting space 411c is smaller than the diameter of the first seating space 411a. The stepped housing 41 has a plurality of stepped portions formed by the difference in diameter between the first seating space 411a, the second seating space 411b, and the connecting space 411c.

The bearing 42 includes a thrust bearing 421 and a deep groove ball bearing 422.

The thrust bearing 421 includes a fixed wheel and a rotatable wheel, and the screw 31 passes through an inner center thereof. The thrust bearing 421 and the deep groove ball bearing 422 are sequentially arranged from the inside to the outside of the fixed end housing 41. Accordingly, the fixed wheel of the thrust bearing 421 is located in the first seating space 411a, and the outer circumferential surface of the thrust bearing 421 contacts the first seating space 411a and the inner circumference thereof is spaced apart from the screw 31. The rotating wheel of the thrust bearing 421 is located in the second seating space 411b and is in contact with the inner ring side of the deep groove ball bearing and the outer circumference is spaced from the circumference of the second seating space 411b. The inner periphery of the rotating wheel of the thrust bearing 421 is spaced apart from the outer periphery of the screw 31. A steel ball is disposed between the fixed wheel and the rotating wheel of the thrust bearing (421).

The deep groove ball bearing 422 is located in the second seating space 411b so that the outer ring contacts the periphery of the second seating space 411b and the inner ring is spaced from the screw 31. [ The inner ring side surface of the deep groove ball bearing 422 is in contact with the outer surface of the rotating wheel of the thrust bearing 421. The thrust bearing 421 and the deep groove ball bearing 422 are symmetrically arranged on both sides of the connection space 411c.

The thrust bearing 421 of the bearing 42 and the deep groove ball bearing 422 can be of well-known bearing construction, and a detailed description of the structure is omitted.

In the present embodiment, the bearings 42 are described as the thrust bearings 421 and the deep groove ball bearings 422. However, the bearings 42 may be variously changed depending on the design of the transfer device, the process of the screw 31, and the like. The bearing 42 may be selected from the group consisting of a thrust bearing, an angular contact ball bearing, a deep groove ball bearing, a roller bearing, and combinations thereof. It can be either. The kind of the bearing 42 is not particularly limited.

The bearing fixing device 43 includes a fixed body 431 and a fastening member 432 and is symmetrically disposed on both sides of the fixed end housing 41 to be engaged with the deep groove ball bearing 422, (X) and the radial direction (Y). The bearing fixing device 43 also presses the deep groove ball bearings 422 and the thrust bearings 421 on both sides of the fixed end housing 41 in the stepwise direction and fixes them in the fixed end housing 41.

The fixed body 431 includes a fixing member 431a and a supporting member 431b and the fixing member 431a and the supporting member 431b are integrally formed and one end of the screw 31 is fixed to the fixing member 431a, And the support member 431b.

The fixing member 431a is located outside the fixed end housing 41 and contacts the inner ring side of the deep groove ball bearing 422 with an inner outer periphery. A fixing hole 431h is formed in the outer periphery of the fixing member 431a so as to penetrate the fixing member 431a inwardly and have a screw. The fastening hole 431h is connected to the threaded hole 311 of the screw 31.

The support member 431b protrudes into the inner ring of the groove ball bearing 422 deep inside the inner periphery of the fixing member 431a and penetrates the inner ring and the rotating wheel of the thrust bearing 421. The support member 431b is positioned between the inner periphery of the rotating wheel and the outer periphery of the screw 31 so that no gap is generated between the screw 31 and the rotating wheel. The supporting member 431b supports the rotating wheel so that the rotating wheel is prevented from moving in the direction perpendicular to the screw 31. [

The outer peripheral diameter of the support member 431b is smaller than the outer peripheral diameter of the fixing member 431a. The inner side (one side surface) of the fixing member 431a perpendicular to the support member 431b can contact the inner ring side.

The inner circumferential diameter of the fixing member 431a is equal to the inner circumferential diameter of the support member 431b and is in contact with the outer periphery of the screw 31. [

The screw 31 is stably supported on the bearing fixing device 43 so that the screw 31 is stably supported by the bearing fixing device 43 and the inner circumferential surface of the screw 31 abuts against the outer circumferential surface of the screw 31, Y) Shaking can be prevented.

The fastening member 432 is formed of a tongue bolt and is fastened to the fastening hole 431h. The end of the fastening member 432 passes through the fixing member 431a and is located in the threaded hole 311. That is, the end of the fastening member 432 is in contact with the circumference of the threaded bore 311.

Since the end of the fastening member 432 is fixed to the periphery of the threaded hole 311 in a state where the fastening member 432 is fastened to the fastening member 431a, the rotating screw 31 does not move in the axial direction. When the fastening member 432 is fastened to the threaded boss 311, the fastening body 431 can be rotated along the circumferential direction of the screw 31 and fixed with the fastening member 432 guide disposed on the threaded boss 311 The body 431 contacts the deep groove ball bearing 422 while rotating along the threaded bore 311 and can press the thrust bearing 421 and the deep groove ball bearing 422 in the direction of the step.

On the other hand, one side of the screw 31 is exposed through the bearing fixing device 43 and is connected to the drive motor 70 through the coupler 60.

The detailed configuration of the coupler 60 and the drive motor 70 is the same as that of the applicant, and includes a known screw assembly, a coupling of the transfer device and the screw assembly assembly method (Patent Registration No. 10-1383815) A motor shaft connection device of a ball screw, a motor shaft connection device of a ball screw, and a linear motion device (patent registration No. 10-1648808) including the motor shaft connection device and motor.

The support end 50 includes a bearing 42, a support end housing 51 and a bearing retainer 43.

The support end housing 51 is disposed on the upper surface of the other side in the longitudinal direction of the base 11 and is detachably coupled with a fastening means (not shown) and faces the fixed end housing 41 in the same line. A bearing space 511 is formed in the support end housing 51 and the bearing space 511 is opened to both sides of the support end housing 51.

The bearing 52 includes a deep groove ball bearing. The bearing 52 is disposed in the bearing space 511, and the outer periphery of the outer ring is in contact with the periphery of the bearing space 511. The inner circumference of the inner ring of the bearing 42 is separated from the outer circumference of the screw 31.

The bearing fixing device 53 is disposed on both sides of the support end housing 51, and at least a portion thereof is located in the bearing space 511. The bearing fixing device 53 includes a fixed body 531 and a fastening member 532. The fastening body 531 is formed with a fastening hole 531h and has a fixing member 531a And a support member 531b protruding from the inner periphery of the fixing member 531a and in contact with the inner periphery of the inner ring of the bearing 52. [ The end of the fastening member 532 is located in the threaded hole 311 formed on the other outer periphery of the screw 31.

The components of the bearing fixing device 53 of the support end portion 50 according to the present embodiment are the same as those of the bearing fixing device 43 of the fixed end portion 40 described above, and thus a duplicate description will be omitted.

According to this embodiment, the fastening members 432 and 532 located at both ends of the screw 31 penetrate the fastening bodies 431 and 531 and are positioned in the threaded bosses 311 of the screw 31 and fastened to the fastening bodies 431 and 531, The screw 31 rotating in contact with the bearings 42 and 52 does not move in the axial direction. If the screw 31 is moved in the axial direction, the position of the conveyed object can not be precisely controlled. However, since the screw 31 does not move in the axial direction, the position of the conveyed object can be accurately controlled.

Yet another embodiment of the present invention has most of the components of the embodiment described with reference to Figs. 8, the screw 31 is machined by a grinding method and the bearing 42 of the fixed end 40 includes an angular contact ball bearing. The fixed body 431 includes only the fixing member 431a without the supporting member 431b.

The bearing space 411 of the fixed end housing 41 penetrates the inside of the fixed end housing 41 with the same diameter. The angular contact ball bearings of the bearing 42 are formed in a pair and disposed in the bearing space 411. A cover 41a for preventing the deviation of the angular contact ball bearing is coupled to the side surface of the fixed end housing 41.

The fixed bodies 431 are formed as a pair and face each other with the bearings 42 therebetween. The screw 31 sequentially passes through the fixing body 431 and the inside of the bearing 42 and the inner circumference of the fixing body 431 is in contact with the outer circumference of the screw 31. The fixed body 431 is in contact with the inner ring side surface of the angular contact ball bearing. The fixing body 431 is fixed to the screw 31 by the fastening member 432. [ A pair of fixed bodies 431 support the screw 31 while pressing a pair of angular contact ball bearings.

Thus, the fixed body can rotate along the threaded bore by the fastening member located on the threaded bore and press the angular contact ball bearing. Therefore, the fixing body can press-fix the angular contact ball bearing while supporting the screw. The angular contact ball bearings can be stably fixed and the turning force of the screw can be improved.

In other respects, the configuration of the embodiment of Figs. 1 to 7 can be applied as it is.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, Of the right.

1: Feeding device 11: Base
12: rail 21: table
22: guide block 31: screw
311: Screw ball 32: Ball nut
40: fixed end 50: support end
41: Fixed end housing 51: Support end housing
411, 511: Bearing space 411a: First seating space
411b: 2nd seismic safety survey 411c: Connection space
42, 52: Bearings 421: Thrust bearings
422: Deep groove ball bearing 43, 53: Bearing failure device
431, 531: Fixing body 431a, 531a: Fixing member
431b, 531b: Supporting members 431h, 531h: Fastening holes
432, 532: fastening member 60: coupler
70: drive motor

Claims (13)

A fastening body through which the screw can penetrate and abut the bearing, and
A fastening member fastened from the outer periphery of the fixed body to the threaded portion of the screw,
/ RTI >
Wherein the fixing body supports the screw while pressing and fixing the bearing by rotating the threaded member with the fastening member guide in a state where the fastening member is fastened to the threaded hole, In which axial movement does not occur
Bearing fixing device for lead ball screw. The method of claim 1,
The fixed body includes:
A fastening member having a fastening hole through which the fastening member passes and which is in contact with a side surface of the inner ring of the bearing;
A supporting member connected to the fixing member and in contact with the inner circumference of the bearing,
/ RTI >
The outer circumferential diameter of the fixing member is larger than the outer circumferential diameter of the support member, and the inner circumferential diameter of the fixing member and the inner circumferential diameter of the support member are the same
Bearing fixing device for lead ball screw. 3. The method of claim 2,
Wherein the bearing comprises a thrust bearing and a deep groove ball bearing,
Wherein the fixing member is in contact with an inner ring side surface of the deep groove ball bearing and the support member is in contact with the inner ring of the deep groove ball bearing and the turning wheel of the thrust bearing
Bearing fixing device for lead ball screw. The method of claim 1,
The fixed body is formed with a fastening hole through which the fastening member passes, one side of the fastening body is in contact with the inner ring side of the bearing, and the inner circumference of the fastening body is in contact with the outer circumference of the screw
Bearing fixing device for lead ball screw. The method of claim 1,
Wherein the fixing body and the coupling member are formed as a pair and face each other with the bearing interposed therebetween, and the pair of fixing bodies press the bearing in a direction facing each other. screw,
A fixed end rotatably supporting one end of the screw,
A support end rotatably supporting the other end of the screw,
A driving motor connected to one end of the screw,
A table coupled to the screw through a ball nut,
A base for supporting the fixed end and the support end and guiding movement of the table;
/ RTI >
Wherein the fixed end and the support end each comprise a bearing fixture for supporting the screw,
The bearing fixing device includes:
A fixing body through which the screw penetrates and supports the bearing;
A fastening member fastened from the outer circumference of the fixed body to the inside of the screw body,
/ RTI >
The fixing body rotates along the threaded hole with the fastening member guide in a state where the fastening member is fastened to the threaded hole to press-fix the bearing and support the screw, and is rotated by the fastening member located on the threaded hole The screw is not axially and radially movable
Conveying device. The method of claim 6,
The bearing may be any one selected from the group consisting of a thrust bearing, an angular contact ball bearing, a deep groove ball bearing, a roller bearing, sign
Conveying device. The method of claim 6,
The fixed end portion
The bearing,
A fixed housing coupled to the base and having a bearing space in which the bearing is located,
The bearing-
Lt; / RTI >
Wherein the bearing space includes a first seating space and a second seating space, wherein a peripheral diameter of the second seating space is larger than a peripheral diameter of the first seating space
Conveying device. 9. The method of claim 8,
The bearing
A thrust bearing and a deep groove ball bearing sequentially disposed outwardly inside the fixed end housing,
The fixing body of the bearing fixing device includes:
A fastening member having a fastening hole through which the fastening member passes and which is in contact with a side surface of the inner ring of the deep groove ball bearing;
A support member connected to the fixed member and having an outer periphery in contact with an inner periphery of an inner ring of the deep groove ball bearing and an inner periphery of a revolving wheel of the thrust bearing,
Containing
Conveying device. 9. The method of claim 8,
The bearing comprising an angular contact ball bearing,
Wherein the fixing body of the bearing fixing device is formed with a fastening hole through which the fastening member passes, and one side surface of the fixing body is in contact with the side surface of the inner ring of the angular contact ball bearing
Conveying device. The method of claim 6,
The support end portion
The bearing,
A supporting end housing coupled to the base and having a bearing space in which the bearing is located,
The bearing-
/ RTI >
Wherein an outer periphery of the bearing fixing device at the support end portion is not in contact with a periphery of the bearing space
Conveying device. 12. The method of claim 11,
The bearing comprising a deep groove ball bearing,
The fixed body is formed with a fastening hole through which the fastening member passes. One side of the fixed body contacts the inner race side surface of the deep groove ball bearing. The inner circumference of the fixed body contacts the outer circumference of the screw
Conveying device. delete
KR1020170132968A 2017-09-21 2017-10-13 Bearing fixing apparatus for lead ball screw and transport apparatus comprising the same KR101874553B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2018/011311 WO2019059733A1 (en) 2017-09-21 2018-09-21 Method for manufacturing screw fixing device, screw fixing device, and linear motion apparatus including same

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Application Number Priority Date Filing Date Title
KR20170121779 2017-09-21
KR1020170121779 2017-09-21

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KR102022269B1 (en) * 2018-09-06 2019-09-18 이종기 Method for manufacturing bearing shaft, fixation apparatus for screw and rectilinear movement apparatus comprising the same
KR102052981B1 (en) * 2019-08-23 2019-12-06 이종기 concentricity processing apparatus and rectilinear movement apparatus comprising the same
KR102359369B1 (en) * 2021-07-01 2022-02-08 이종기 Concentricity processing apparatus and rectilinear movement apparatus comprising the same

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KR102022269B1 (en) * 2018-09-06 2019-09-18 이종기 Method for manufacturing bearing shaft, fixation apparatus for screw and rectilinear movement apparatus comprising the same
KR102052981B1 (en) * 2019-08-23 2019-12-06 이종기 concentricity processing apparatus and rectilinear movement apparatus comprising the same
WO2021040291A1 (en) * 2019-08-23 2021-03-04 이종기 Center aligning device, and linearly moving apparatus including same
JP2022545811A (en) * 2019-08-23 2022-10-31 キ リ，ジョン Center matching device and linear motion device including the same
JP7371229B2 (en) 2019-08-23 2023-10-30 キ リ，ジョン Center alignment device and linear motion device including the same
KR102359369B1 (en) * 2021-07-01 2022-02-08 이종기 Concentricity processing apparatus and rectilinear movement apparatus comprising the same

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