CN116906449A - Long-life ball linear guide rail pair - Google Patents

Long-life ball linear guide rail pair Download PDF

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Publication number
CN116906449A
CN116906449A CN202311057949.0A CN202311057949A CN116906449A CN 116906449 A CN116906449 A CN 116906449A CN 202311057949 A CN202311057949 A CN 202311057949A CN 116906449 A CN116906449 A CN 116906449A
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CN
China
Prior art keywords
ball
linear
sliding block
balls
long
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Granted
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CN202311057949.0A
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Chinese (zh)
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CN116906449B (en
Inventor
叶可亮
王顺淼
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Yueqing Sanhuan Precision Machinery Co ltd
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Yueqing Sanhuan Precision Machinery Co ltd
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Priority to CN202311057949.0A priority Critical patent/CN116906449B/en
Publication of CN116906449A publication Critical patent/CN116906449A/en
Application granted granted Critical
Publication of CN116906449B publication Critical patent/CN116906449B/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

The invention discloses a long-service-life ball linear guide rail pair. The technical scheme adopted comprises the following steps: the linear sliding rail and the sliding block assembly are characterized in that the sliding block assembly comprises a sliding block body and balls, two parallel ball grooves are formed in two sides of the sliding block body, ball channels are arranged beside the ball grooves and correspond to the ball grooves, two rows of balls are respectively arranged in the ball grooves and the ball channels, ball returning devices for connecting the ball grooves and the ball channels are arranged at two ends of the sliding block body, the sliding block body is contacted with a working surface of the linear sliding rail through the surfaces of the balls, the ball returning devices comprise a main body and a cover plate arranged at the front end of the main body, a U-shaped returning channel for connecting the ball grooves and the ball channels on the sliding block body is arranged between the main body and the cover plate, a ball rotating structure is arranged at an inlet of the cover plate corresponding to the U-shaped returning channel, and when the sliding block assembly slides on the linear sliding rail in a linear manner, the balls inside the sliding block body rotate through the ball rotating structure.

Description

Long-life ball linear guide rail pair
Technical Field
The invention belongs to the field of precise linear transmission, and particularly relates to a linear guide rail pair.
Background
In the field of precision linear transmission, a linear guide rail pair is a critical product, and is now an indispensable main functional component in various precision machine tools, machining centers and precision electronic machines. The motion of the ball linear guide rail pair is realized by means of rolling of the steel balls, the friction resistance of the guide rail pair is small, the difference between dynamic friction resistance and static friction resistance is small, crawling is not easy to generate at low speed, the repeated positioning precision is high, the ball linear guide rail pair is suitable for linear motion which is frequently started or commutated, and the positioning precision of a machine tool can be set to be in a super-micron level. Since the linear guide pair is usually required to perform frequent starting or reversing motions under high load, the balls are easily worn out, and thus the accuracy is lowered. To solve this problem, at the production end: manufacturers generally improve the product quality by improving the production process or materials, so as to prolong the precision and the service life of the product, but the manufacturers are difficult to break through in essence at present; at the application end: enterprises usually ensure high-precision operation of equipment by replacing the linear guide rail pair, so that the use cost is increased, and the production is delayed.
The applicant has long studied that an important cause of ball wear is: when the linear guide rail pair moves, the steel ball is usually in contact with the working surface of the slide rail at the same position on the surface, so that the local temperature at the position is increased and the abrasion is increased, and the service life of the steel ball is greatly shortened.
Disclosure of Invention
The invention aims to solve the technical problem of providing a long-service-life ball linear guide rail pair.
In order to solve the problems, the technical scheme adopted by the invention comprises the following steps: the linear sliding rail comprises a sliding block body and sliding blocks, wherein the sliding blocks comprise sliding blocks and rolling balls, two parallel rolling ball grooves are formed in two sides of the sliding block body and are respectively provided with a rolling ball channel, two rows of rolling balls are respectively arranged in the rolling ball grooves and the rolling ball channels, rolling ball return devices for connecting the rolling ball grooves and the rolling ball channels are arranged at two ends of the sliding block body, the rolling balls can roll circularly in the sliding block body through the rolling ball return devices, and the sliding block body is in contact with the working surface of the linear sliding rail through the surfaces of the rolling balls, so that sliding connection is achieved, and the linear sliding rail is characterized in that:
the ball return device comprises a main body and a cover plate arranged at the front end of the main body, wherein a U-shaped return channel used for connecting a ball groove on the sliding block body with the ball channel is arranged between the main body and the cover plate, a ball rotation structure is arranged at the entrance of the cover plate corresponding to the U-shaped return channel, and when the sliding block assembly linearly slides on the linear sliding rail, balls in the sliding block assembly rotate through the ball rotation structure, so that other positions of the ball switching surface are contacted with the working surface of the linear sliding rail.
The long-life ball linear guide rail pair is characterized in that: the ball autorotation structure comprises a spiral pipeline which connects the ball channel with the U-shaped return channel, a group of spiral ribs are arranged on the wall of the spiral pipeline, and the balls autorotate through the spiral ribs to enable other positions of the ball switching surface to be in contact with the working surface of the linear sliding rail.
The long-life ball linear guide rail pair is characterized in that: the end of the ball channel is provided with a positioning groove, and the front end of the spiral pipeline is embedded into the positioning groove.
The long-life ball linear guide rail pair is characterized in that: the spiral convex rib consists of a short inclined plane, a long inclined plane and an arc-shaped plane, wherein the short inclined plane and the long inclined plane are arranged at an included angle, the arc-shaped plane is connected to the tops of the short inclined plane and the long inclined plane, the inclined angle alpha of the short inclined plane is 55-65 degrees, and the inclined angle beta of the long inclined plane is 10-20 degrees.
The long-life ball linear guide rail pair is characterized in that: guide surfaces are arranged at the two ends of the spiral convex ribs.
The long-life ball linear guide rail pair is characterized in that: the number of the spiral convex ribs is 3-12.
The long-life ball linear guide rail pair is characterized in that: the ball slot upper end of slider body is equipped with the holder, the lower extreme is equipped with down the holder, go up holder, lower holder both ends are fixed in the main part of ball back ware, go up the holder centre be equipped with the louvre, be close to the ball slot side is equipped with dustproof adhesive tape mounting groove, through dustproof adhesive tape mounting groove is equipped with dustproof adhesive tape, slider body lower extreme is close to lower holder department is equipped with down dustproof adhesive tape.
The long-life ball linear guide rail pair is characterized in that: the two rows of balls are arranged at an included angle of 45 degrees and then contact with the working surface of the linear slide rail.
The long-life ball linear guide rail pair is characterized in that: the ball return device is characterized in that a dust removing plate is arranged at the outer end part of the main body of the ball return device, and the dust removing plate is magnetized.
The long-life ball linear guide rail pair is characterized in that: the long inclined surface is a convex surface corresponding to the upper part of the inclined surface center line and a concave surface corresponding to the lower part of the inclined surface center line, and smooth transition is formed between the convex surface and the concave surface.
The long-life ball linear guide rail pair is characterized in that: the ball rotates by 10-20 degrees through the spiral convex rib.
The long-life ball linear guide rail pair has the advantages that: through setting up ball rotation structure in the slider subassembly, when the slider subassembly makes the straight line slip on linear slide rail, its inside ball takes place the rotation through ball rotation structure, makes other positions of ball switching surface contact with linear slide rail's working face, and then makes the ball temperature rise more even and the reduction of wearing and tearing, and then improves the life of ball greatly, and relative equivalent linear guide is vice, and life can improve more than 50%.
Drawings
The invention is further described below with reference to the drawings.
FIG. 1 is a schematic view of a long life linear ball guide rail assembly of the present invention;
FIG. 2 is a cross-sectional view of a long life linear ball guide rail assembly of the present invention;
FIG. 3 is an exploded view of a long life linear ball guide assembly of the present invention;
FIG. 4 is a schematic view of the structure of the slider body of the present invention;
FIG. 5 is a schematic view of the structure of the ball return of the present invention;
FIG. 6 is a schematic view of the cover plate structure of the ball return of the present invention;
FIG. 7 is a schematic view of the structure of the helical piping of the present invention;
FIG. 8 is a schematic view of the structure of the upper retainer of the present invention;
FIG. 9 is a schematic diagram of the layout of the ball of the present invention;
fig. 10 is a schematic structural view of the spiral bead of the present invention.
Detailed Description
Referring to fig. 1 to 10, the long life ball linear guide pair of the present invention includes a linear slide rail 1 and a slider assembly 2. The sliding block assembly 2 comprises a sliding block body 3 and balls 4, two parallel ball grooves 5 are formed in two sides of the sliding block body 3, and a ball channel 6 is formed beside each ball groove 5 corresponding to the sliding block body 3. The two rows of balls 4 are respectively arranged in the ball grooves 5 and the ball channels 6, ball return devices 7 which are used for connecting the ball grooves 5 with the ball channels 6 are arranged at two ends of the sliding block body 3, and the balls 4 can circularly roll in the sliding block body 3 through the ball return devices 7. The sliding block body 3 is in contact with the working surface of the linear sliding rail 1 through the balls 4, so that sliding connection is realized, and the working surface of the linear sliding rail 1 is also of a groove structure. In order to reduce friction force and enable the sliding of the sliding block assembly 2 to be smoother, the contact between each ball 4 and the working surface of the ball groove 5 or the linear sliding rail 1 is point contact, and the contact between each row of balls 4 and the working surface of the ball groove 5 or the linear sliding rail 1 is line contact. The ball return 7 comprises a main body 8 and a cover plate 9 arranged at the front end of the main body 8, wherein the cover plate 9 is embedded in a groove 34 at the front end of the main body 8 and is fastened by a screw. A U-shaped return channel 10 for connecting the ball groove 5 on the slider body 3 with the ball channel 6 is arranged between the main body 8 and the cover plate 9, and a ball autorotation structure is arranged at the entrance of the cover plate 9 corresponding to the U-shaped return channel 10. When the sliding block assembly 2 slides linearly on the linear sliding rail 1, the balls 4 therein rotate through the ball rotation structure, so that other positions of the switching surface of the balls 4 are contacted with the working surface of the linear sliding rail 1. The angle of rotation of the ball 4 through the spiral rib 12 is easy to be 10-20 degrees each time, the problem of local temperature rise cannot be solved by too small angle, the equal contact surface of the ball 4 is reduced by too large angle, and the optimal switching effect cannot be achieved.
Preferably, the ball autorotation structure comprises a spiral pipeline 11 for connecting the ball channel 6 with the U-shaped return channel 10, a group of spiral ribs 12 are arranged on the wall of the spiral pipeline 11, and the balls 4 autorotate through the spiral ribs 12, so that other positions of the switching surface of the balls 4 are contacted with the working surface of the linear slide rail 1. By adopting the ball rotation structure, the rotation of the ball 4 can be realized under the condition of not increasing the volume of the conventional linear guide rail pair, and the structure is easy to process and durable.
Preferably, the end of the ball channel 6 is provided with a positioning groove 13, and the front end of the spiral pipe 11 is embedded into the positioning groove 13, so as to position the spiral pipe 11, and simultaneously realize smooth transition between the spiral pipe 11 and the ball channel 6, so as to ensure the connection precision and stability.
Preferably, the spiral rib 12 is composed of a short inclined plane 14, a long inclined plane 15 and an arc-shaped plane 16 connected to the tops of the short inclined plane 14 and the long inclined plane 15, wherein the inclined angle of the short inclined plane 14 is <55 degrees alpha <65 degrees, preferably 60 degrees, and the inclined angle of the long inclined plane 15 is 10 degrees < beta <20 degrees, preferably 15 degrees. By arranging the arc-shaped surface 16 to reduce friction with the balls 4, the balls 4 can pass through the spiral pipeline 11 more smoothly, and can rotate along the long inclined surface 15 in a spiral shape so as to accelerate the passing speed.
Preferably, the two ends of the spiral rib 12 are provided with guiding surfaces 17, and the balls 4 can enter the spiral pipeline 11 more easily through the guiding surfaces 17, and meanwhile collision with the end of the spiral rib 12 is relieved, so that abrasion is further reduced.
Preferably, the number of the spiral ribs 12 is 3-12, and ideally 6. If the number of the spiral ribs 12 is too small, the stability of the balls 4 is poor and the abrasion is increased when the balls pass through the ball channel 6; if the number of the spiral ribs 12 is too large, the balls 4 cannot rotate when passing through the ball channel 6.
Preferably, an upper cage 22 is provided at the upper end of the ball groove 5 of the slider body 3, a lower cage 23 is provided at the lower end of the slider body 3, both ends of the upper cage 22 and the lower cage 23 are fixed to the main body 8 of the ball return 7, and the balls 4 are held in the ball groove 5 by the upper cage 22 and the lower cage 23 to prevent water from falling off. A heat dissipation hole 24 is arranged in the middle of the upper retainer 22, and the heat generated by the sliding block assembly 2 is quickly dissipated through the heat dissipation hole 24. The upper retainer 22 is close to the ball slot 5 side is equipped with dustproof adhesive tape mounting groove 25, through dustproof adhesive tape mounting groove 25 is equipped with dustproof adhesive tape 26, slider body 3 lower extreme is close to lower retainer 23 department is equipped with dustproof adhesive tape 27 down, go up dustproof adhesive tape 26 and dustproof adhesive tape 27 down and form by silica gel, its terminal surface with be clearance fit between the working face of linear slide rail 1 to prevent impurity such as dust entering, influence the smoothness and the precision of its motion. In addition, the upper dustproof adhesive tape 26 is installed by providing the dustproof adhesive tape installation groove 25 on the upper retainer 22, so that the inner space is reasonably utilized, the installation is convenient, and the volume of the sliding block assembly 2 is not excessively increased.
Preferably, the two rows of balls 4 are arranged at an included angle of 45 degrees and then contact with the working surface of the linear slide rail 1. By adopting the above-mentioned angle layout, the balls 4 can uniformly act on the working surface of the linear slide rail 1 no matter the sliding block assembly 2 is subjected to downward or upward or leftward or rightward load force, so that the load capacity and load adaptability of the linear slide rail 1 can be greatly improved.
Preferably, the outer end of the main body 8 of the ball return 7 is provided with a dust removing plate 29 and is fixed by a screw 35. The dust removal plate 29 is magnetized. Through taking magnetism the dust removal board 29 can absorb the iron fillings on linear slide rail 1 surface prevents that the iron fillings from getting into ball 4, simultaneously because dust removal board 29 is right linear slide rail 1's adsorption, make slider subassembly 2 can more stable keep on linear slide rail 1.
Preferably, the long inclined surface 15 is a convex surface 31 above the inclined surface center line 30, the long inclined surface 15 is a concave surface 32 below the inclined surface center line 30, and a smooth transition is formed between the convex surface 31 and the concave surface 32. Through the above structure, the balls 4 can slide smoothly, stably and rapidly over the spiral ribs 12, thereby forming autorotation.
The following further proves the beneficial effects of the invention through a reliability comparison test:
1. test conditions
The test piece selects 4 ball linear guide rail pairs with the same specification and material, the tested guide rail adopts a stepping loading mode, and the loading load, the working speed and the working mileage are distributed according to a meter 1:
equivalent load based on step load test:
wherein: p is the full-course equivalent rated load of the heavy-load rolling linear guide rail pair, L is the full stroke of the heavy-load rolling linear guide rail pair, n is the number of running-in times in sections, q k (1.ltoreq.k.ltoreq.n) is the corresponding travel l k Load of (1) k Is a segmented running-in stroke.
2. Test procedure
The test was performed at a speed of 50m/min and a load of 10% C, before and after the start of the test, with vibration and noise testing performed every 50km of operation and report output printed.
3. Test results
Definition of quality of product: the quality q=1.0 (brand new factory mileage l=0) is given to the brand new guide rail of qualified factory, and after the delta mileage is worked, the quality Q is a, namely Q (l=delta) =a (0 < a <1, delta > 0). The quality after 500km test of 4 test pieces is defined as q1, q2, q3 and q4 respectively, wherein q1 is the sample of the invention, and the quality of the balls is as follows:
q1(L=500)=0.99;q2(L=500)=0.95;q3(L=500)=0.93;q4(L=500)=0.90。
as can be seen from the above reliability comparison test, the linear guide pair of the present invention has wear resistance superior to other structures.
Although the present invention has been described with respect to preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the invention, and the invention is not limited to the specific embodiments described above, but is intended to cover all modifications, equivalents and alternatives falling within the scope of the invention.

Claims (11)

1. The utility model provides a long-life ball linear guide is vice, includes linear slide rail (1), slider subassembly (2) include slider body (3) and ball (4), slider body (3) both sides all are equipped with two parallel ball slot (5), and correspond every ball slot (5) are other to be equipped with ball passageway (6), and two rows ball (4) set up respectively in ball slot (5) and ball passageway (6), slider body (3) both ends are equipped with will ball slot (5) and ball passageway (6) carry out ball return ware (7) that link up, pass through ball return ware (7) make ball (4) can circulate the roll in slider body (3), slider body (3) pass through the surface of ball (4) with the working face of linear slide rail (1) contacts, realizes sliding connection, its characterized in that: the ball return device (7) comprises a main body (8) and a cover plate (9) arranged at the front end of the main body (8), wherein a U-shaped return channel (10) used for connecting a ball groove (5) on the sliding block body (3) with the ball channel (6) is arranged between the main body (8) and the cover plate (9), a ball autorotation structure is arranged at the entrance of the cover plate (9) corresponding to the U-shaped return channel (10), and when the sliding block assembly (2) linearly slides on the linear sliding rail (1), balls (4) in the sliding block assembly autorotate through the ball autorotation structure, so that other positions of the switching surfaces of the balls (4) are contacted with the working surface of the linear sliding rail (1).
2. The long life linear ball guide assembly of claim 1 wherein: the ball autorotation structure comprises a spiral pipeline (11) for connecting the ball channel (6) with the U-shaped return channel (10), a group of spiral convex ribs (12) are arranged on the wall of the spiral pipeline (11), and the balls (4) autorotate through the spiral convex ribs (12) so that other positions of the switching surface of the balls (4) are contacted with the working surface of the linear sliding rail (1).
3. The long life linear ball guide assembly of claim 2, wherein: the end of the ball channel (6) is provided with a positioning groove (13), and the front end of the spiral pipeline (11) is embedded into the positioning groove (13).
4. The long life linear ball guide assembly of claim 2, wherein: the spiral convex rib (12) consists of a short inclined surface (14) arranged at an included angle, a long inclined surface (15) and an arc-shaped surface (16) connected to the tops of the short inclined surface (14) and the long inclined surface (15), the inclined angle alpha of the short inclined surface (14) is 55-65 degrees, and the inclined angle beta of the long inclined surface (15) is 10-20 degrees.
5. The long life linear ball guide assembly of claim 2, wherein: guide surfaces (17) are arranged at the two ends of the spiral convex rib (12).
6. The long life linear ball guide assembly of claim 2, wherein: the number of the spiral convex ribs (12) is 3-12.
7. The long life linear ball guide assembly of claim 1 wherein: the ball slot (5) upper end of slider body (3) is equipped with holder (22), lower extreme and is equipped with holder (23) down, go up holder (22), lower holder (23) both ends are fixed in on main part (8) of ball back ware (7), be equipped with louvre (24) in the middle of going up holder (22), be close to ball slot (5) side is equipped with dustproof adhesive tape mounting groove (25), through dustproof adhesive tape mounting groove (25) are equipped with dustproof adhesive tape (26), slider body (3) lower extreme is close to lower holder (23) department is equipped with dustproof adhesive tape (27) down.
8. The long life linear ball guide assembly of claim 1 wherein: the two rows of balls (4) are arranged at an included angle of 45 degrees and then contact with the working surface of the linear slide rail (1).
9. The long life linear ball guide assembly of claim 1 wherein: the ball return device is characterized in that a dust removing plate (29) is arranged at the outer end part of the main body (8) of the ball return device (7), and the dust removing plate (29) is magnetized.
10. The long life linear ball guide assembly of claim 4 wherein: the long inclined surface (15) is provided with a convex surface (31) corresponding to the upper part of the inclined surface central line (30) and a concave surface (32) corresponding to the lower part of the inclined surface central line (30), and smooth transition is formed between the convex surface (31) and the concave surface (32).
11. The long life linear ball guide assembly of claim 2, wherein: the ball (4) rotates by 10-20 degrees through the spiral convex rib (12).
CN202311057949.0A 2023-08-22 2023-08-22 Long-life ball linear guide rail pair Active CN116906449B (en)

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CN202311057949.0A CN116906449B (en) 2023-08-22 2023-08-22 Long-life ball linear guide rail pair

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Application Number Priority Date Filing Date Title
CN202311057949.0A CN116906449B (en) 2023-08-22 2023-08-22 Long-life ball linear guide rail pair

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CN116906449B CN116906449B (en) 2024-01-30

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324322A (en) * 1989-06-16 1991-02-01 Meisui Lin Method and equipment for rotative retaining of bearing
JP3008835U (en) * 1994-05-31 1995-03-20 ヒーウイン テクノロジーズ コーポレイション Linear ball guide rail
JP2004308856A (en) * 2003-04-10 2004-11-04 Nsk Ltd Ball screw
JP2005256997A (en) * 2004-03-12 2005-09-22 Shangyin Sci & Technol Co Ltd Structure of slide block of linear guide way
CN201121653Y (en) * 2007-11-12 2008-09-24 鼎金传动科技股份有限公司 Ball guiding structure
CN105570295A (en) * 2016-02-01 2016-05-11 嘉兴海菱达精密传动科技有限公司 Rolling linear guide rail pair
DE202019104579U1 (en) * 2019-08-20 2019-09-03 Wei-Ting Lin Orbit arrangement of a linear guide
JP3223497U (en) * 2019-08-01 2019-10-10 林威廷 Return guide structure of linear guide stage
TWI690661B (en) * 2018-11-22 2020-04-11 林威廷 Backflow channel structure of linear slide rail
CN217842389U (en) * 2022-08-31 2022-11-18 嘉兴美森精密科技有限公司 Linear guide rail pair with self-positioning ball reverser
CN116044900A (en) * 2022-11-28 2023-05-02 广东凯特精密机械有限公司 Rolling linear guide rail pair with ball holding part

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0324322A (en) * 1989-06-16 1991-02-01 Meisui Lin Method and equipment for rotative retaining of bearing
JP3008835U (en) * 1994-05-31 1995-03-20 ヒーウイン テクノロジーズ コーポレイション Linear ball guide rail
JP2004308856A (en) * 2003-04-10 2004-11-04 Nsk Ltd Ball screw
JP2005256997A (en) * 2004-03-12 2005-09-22 Shangyin Sci & Technol Co Ltd Structure of slide block of linear guide way
CN201121653Y (en) * 2007-11-12 2008-09-24 鼎金传动科技股份有限公司 Ball guiding structure
CN105570295A (en) * 2016-02-01 2016-05-11 嘉兴海菱达精密传动科技有限公司 Rolling linear guide rail pair
TWI690661B (en) * 2018-11-22 2020-04-11 林威廷 Backflow channel structure of linear slide rail
JP3223497U (en) * 2019-08-01 2019-10-10 林威廷 Return guide structure of linear guide stage
DE202019104579U1 (en) * 2019-08-20 2019-09-03 Wei-Ting Lin Orbit arrangement of a linear guide
CN217842389U (en) * 2022-08-31 2022-11-18 嘉兴美森精密科技有限公司 Linear guide rail pair with self-positioning ball reverser
CN116044900A (en) * 2022-11-28 2023-05-02 广东凯特精密机械有限公司 Rolling linear guide rail pair with ball holding part

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