A high-precision rolling linear guide pair and production method

Abstract

The present invention provides a high-precision rolling linear guide pair and a production method, which relate to the technical field of linear guide pairs. The high-precision rolling linear guide pair includes a linear guide, a slider and two end covers. The slider is slidably connected to the outside of the linear guide, and the two end covers are clamped at the front and rear ends of the slider. Circulating raceways symmetrically distributed on both sides of the linear guide are formed between the slider and the end covers. Each circulating raceway is filled with balls. Heat dissipation grooves are provided on both sides of the slider. The two heat dissipation grooves respectively penetrate the circulating raceways on both sides of the linear guide. A cover plate is fixedly connected to the top of the heat dissipation groove, and a negative pressure chamber is formed between the cover plate and the heat dissipation groove. The negative pressure chamber penetrates the circulating raceway, and the balls and the circulating raceway generate heat by friction. The heat dissipation liquid in the negative pressure chamber vaporizes and liquefies at the cover plate to release heat, dissipating heat to the linear guide pair, preventing the matching degree between the circulating raceway and the balls from decreasing under the action of thermal stress, thereby improving the transmission accuracy of the linear guide pair.

Description

Technical Field

[0001] The present invention relates to the technical field of linear guide rail pairs, in particular to a high-precision rolling linear guide rail pair and a production method thereof. Background Art

[0002] The linear guide pair is mainly composed of a slider and a linear guide. The rolling linear guide pair has a circulating raceway between the slider and the linear guide. Rolling bodies are arranged in the raceway. The rolling bodies are usually balls or rollers. When the slider slides relative to the linear guide, the sliding friction between the slider and the guide is converted into rolling friction through the rolling bodies, thereby improving the transmission efficiency and sensitivity of the linear guide pair.

[0003] During the operation of the linear guide pair, the slider makes a linear reciprocating motion along the guide rail. When the slider moves at high speed or is subjected to vibration or impact for a long time, the friction between the rolling element and the raceway increases, and the various components of the guide pair produce different degrees of thermal stress deformation, which can easily lead to deformation of the circulating raceway, a decrease in the matching degree between the rolling element and the circulating raceway, and even the possibility of the rolling element getting stuck. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies of the prior art, the present invention provides a high-precision rolling linear guide pair and a production method thereof, which solves the problem that thermal stress affects the matching degree between the rolling element and the circulating raceway.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-precision rolling linear guide pair and a production method, including a linear guide, a slider and two end covers, the slider is slidably connected to the outside of the linear guide, the two end covers are clamped at the front and rear ends of the slider, and circulating raceways symmetrically distributed on both sides of the linear guide are formed between the slider and the end covers. Each circulating raceway is filled with balls, and heat dissipation grooves are provided on both sides of the slider. The two heat dissipation grooves respectively pass through the circulating raceways on both sides of the linear guide. A cover plate is fixedly connected to the top of the heat dissipation groove, and a negative pressure chamber is formed between the cover plate and the heat dissipation groove, and there is heat dissipation liquid inside the negative pressure chamber.

[0008] Preferably, the middle portion of the cover plate protrudes downward to form a guide platform, and the bottom end of the guide platform is fixedly connected with evenly distributed guide cones, which extend vertically to the lower portion of the heat dissipation groove.

[0009] Preferably, both ends of the slider are detachably connected with heat dissipation fins, and the two heat dissipation fins are respectively fitted with the two cover plates. Heat conduction grooves are opened on both sides of the slider, and heat conduction plates are arranged inside the heat conduction grooves. The end of the heat conduction plate away from the linear guide rail is fitted with the heat dissipation fins.

[0010] Preferably, the front end of the slider is fixedly connected to a tube sleeve, an exhaust pipe is obliquely arranged on the inner side of the tube sleeve, the end of the exhaust pipe away from the slider is connected to a vacuum valve, the exhaust pipe is connected to two heat dissipation grooves, the vacuum valve is installed on the end cover on the front side of the slider, and a through hole corresponding to the tube sleeve is opened on the end cover.

[0011] The two guide rails are connected by a plurality of grooves, each of which is parallel to the front and rear ends of the slider, and the two guide rails are connected by a plurality of grooves.

[0012] Preferably, the end cover has two first plug-in blocks in the middle of one end near the slider, and the end cover has second plug-in blocks on both sides of one end near the slider, and the inner sides of the first plug-in block and the second plug-in block are provided with a slide groove, and the inner sides of the slide groove are slidably connected with a card block, and the card block is connected to the bottom of the slide groove through the first spring, and a slot corresponding to the first plug-in block and the second plug-in block is provided on the end surface of the slider, and a first card plate is embedded in the top inner side of the slider, the first card plate is arranged between the slider and the linear guide rail, and the second card plates are embedded at both ends of the slider, and the second card plate is arranged between the slider and the heat dissipation fin, and a groove body corresponding to the first card plate and the second card plate is provided on the slider, and a card slot is provided on the first card plate and the second card plate, the card slot on the first card plate corresponds to the card block on the first plug-in block, and the card slot on the second card plate corresponds to the card block on the second plug-in block.

[0013] Preferably, the first card plate and the second card plate are both provided with through grooves connected to the card slots, the front and rear ends of the slider are both provided with countersunk holes, the countersunk holes on both sides of the linear guide rail are symmetrical to each other, and a second spring is provided inside the countersunk hole.

[0014] A method for producing a high-precision rolling linear guide pair comprises the following steps:

[0015] S1. The linear guide rail, slider, end cap, cover, heat conducting plate, first and second pallet raw materials are cleaned and dried, the linear guide rail, slider, end cap, cover, heat conducting plate, first and second pallet raw materials are rust-removed and polished, and the linear guide rail and slider are straightened;

[0016] S2. Mill the linear guide rail, slider, end cap, cover plate, first and second pallet plates. Machine strip grooves on the linear guide rail; machine heat dissipation grooves, heat conduction grooves, grooves, lugs, inner ball return grooves, straight ball return grooves, slots, and countersunk holes on the slider; and corresponding troughs for the first and second pallet plates. Machine grooves, outer ball return grooves, guide blocks, guide grooves, first and second inserts on the end cap; and create slide grooves on the first and second inserts. Machine the guide platform and guide cone on the cover plate; and create slots and through-grooves on the first and second pallet plates.

[0017] S3. The card block is spring-connected to the slide groove through the first spring, and a dummy shaft with the same cross-sectional shape and size as the linear guide is injection-molded. The dummy shaft has a strip groove corresponding to the groove, and the dummy shaft is inserted into the inner side of the slider. Then, one end cover is first clamped to the slider, and the slider is placed vertically. Balls are loaded into the return ball straight groove and between the groove and the strip groove, and the remaining balls are arranged in the inner return ball groove. The other end cover is clamped to the slider. When the end cover is clamped to the slider, the end cover squeezes the second spring into the countersunk hole, and the first and second insert blocks are inserted into the slot. When the first and second insert blocks are inserted into the bottom end of the slot, the card block is clamped into the slot under the elastic force of the first spring, and the second spring in the countersunk hole presses the end cover tightly, providing prestress for the card block and the slot;

[0018] S4. Embed the first and second card plates into the slider, insert the heat conduction plate into the heat conduction groove, install the heat dissipation fins on both sides of the slider, and complete the production of the rolling linear guide pair. When using the rolling linear guide pair, inject heat dissipation liquid into the heat dissipation groove, fix the cover plate on the top of the heat dissipation groove, evacuate the heat dissipation groove, align the dummy shaft on the inside of the slider with the linear guide rail, fix the dummy shaft and the linear guide rail relatively, and push the slider to the outside of the linear guide rail to prevent the ball from slipping out of the circulating raceway.

[0019] (3) Beneficial effects

[0020] The present invention provides a high-precision rolling linear guide pair and a production method thereof. It has the following beneficial effects:

[0021] 1. The present invention forms a circulation raceway through grooves, strip grooves, straight ball return grooves and inner ball return grooves, outer ball return grooves and guide grooves on the front and rear sides of the slider, and forms a negative pressure chamber between the cover plate and the heat dissipation groove. The negative pressure chamber runs through the circulation raceway. When the rolling linear guide pair is working, the balls and the circulation raceway generate heat by friction, and the heat dissipation liquid in the negative pressure chamber is vaporized by heat. The vaporized heat dissipation liquid liquefies and releases heat at the cover plate. The heat dissipation liquid is evenly and quickly introduced into the bottom of the heat dissipation groove through the guide platform and the guide cone, and the heat in the negative pressure chamber is transferred to the heat dissipation fins through the cover plate and the heat conduction plate, thereby improving the heat dissipation efficiency of the slider, avoiding the mismatch between the circulation raceway and the balls under the action of thermal stress, and thus improving the transmission accuracy of the linear guide pair.

[0022] 2. During the assembly of the rolling linear guide pair of the present invention, first, one end cover is engaged with the slider, the slider is placed vertically, and balls are loaded into the return ball straight groove and between the groove and the strip groove. The other end cover is engaged with the slider. When the end cover is engaged with the slider, the end cover squeezes the second spring into the countersunk hole, and the first plug-in block and the second plug-in block are inserted into the slot. When the first plug-in block and the second plug-in block are inserted into the bottom end of the slot, the block is engaged with the slot under the elastic force of the first spring, and the second spring in the countersunk hole presses the end cover tightly, providing prestress for the block and the slot, ensuring that the end cover and the slider are reliably connected. When the slider slides relative to the linear guide, the smoothness and stability of the ball are guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 It is a schematic diagram of the end cover structure of the present invention;

[0025] Figure 3 It is a schematic diagram of the slider structure of the present invention;

[0026] Figure 4 This is a main structural diagram of the slider of the present invention;

[0027] Figure 5 is a side sectional view of the first card plate of the present invention;

[0028] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0029] Figure 7 It is a top cross-sectional view of the second card board of the present invention.

[0030] Among them, 1. linear guide rail; 2. slider; 3. end cover; 4. ball bearing; 5. heat sink; 6. cover plate; 7. guide platform; 8. guide cone; 9. heat sink fin; 10. heat conduction groove; 11. heat conduction plate; 12. pipe sleeve; 13. exhaust pipe; 14. vacuum valve; 15. through hole; 16. groove; 17. lug; 18. inner return ball groove; 19. groove; 20. outer return ball groove; 21. guide block; 22. guide groove; 23. return ball straight groove; 24. strip groove; 25. first plug-in block; 26. second plug-in block; 27. slide groove; 28. clamping block; 29. first spring; 30. slot; 31. first clamping plate; 32. second clamping plate; 33. clamping groove; 34. through groove; 35. countersunk hole; 36. second spring. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1-7 As shown, the embodiment of the present invention provides a high-precision rolling linear guide pair and a production method, including a linear guide 1, a slider 2 and two end covers 3. The slider 2 is slidably connected to the outside of the linear guide 1, and the two end covers 3 are clamped at the front and rear ends of the slider 2. Circulating raceways symmetrically distributed on both sides of the linear guide 1 are formed between the slider 2 and the end covers 3. Balls 4 are filled in each circulating raceway. Heat dissipation grooves 5 are opened on both sides of the slider 2. The two heat dissipation grooves 5 respectively penetrate the circulating raceways on both sides of the linear guide 1. The heat dissipation grooves 5 A cover plate 6 is fixedly connected to the top, and a negative pressure chamber is formed between the cover plate 6 and the heat dissipation groove 5. There is heat dissipation liquid inside the negative pressure chamber. The negative pressure chamber runs through the circulating raceway. When the rolling linear guide pair is working, the ball 4 and the circulating raceway generate heat due to friction. The heat dissipation liquid in the negative pressure chamber is vaporized by heat, and the vaporized heat dissipation liquid is liquefied and releases heat at the cover plate 6, avoiding excessive temperature of various components of the linear guide pair under high speed or high vibration conditions, and avoiding the reduction of matching between the circulating raceway and the ball 4 under the action of thermal stress, thereby improving the transmission accuracy of the linear guide pair.

[0034] The middle part of the cover plate 6 protrudes downward to form a guide platform 7, and the bottom end of the guide platform 7 is fixedly connected to evenly distributed guide cones 8. The guide cones 8 extend vertically to the lower part of the heat dissipation groove 5. The heat dissipation liquid is evenly and quickly introduced into the bottom of the heat dissipation groove 5 through the guide platform 7 and the guide cones 8.

[0035] Both ends of the slider 2 are detachably connected with heat dissipation fins 9, and the two heat dissipation fins 9 are connected to the slider 2 by bolts. The two heat dissipation fins 9 are respectively fitted with two cover plates 6. Heat conduction grooves 10 are provided on both sides of the slider 2, and heat conduction plates 11 are provided inside the heat conduction grooves 10. The end of the heat conduction plate 11 away from the linear guide rail 1 is fitted with the heat dissipation fins 9, and the heat in the negative pressure chamber is transferred to the heat dissipation fins 9 through the cover plate 6 and the heat conduction plate 11, thereby improving the heat dissipation efficiency of the slider 2.

[0036] The front end of the slider 2 is fixedly connected to a pipe sleeve 12, and an exhaust pipe 13 is obliquely arranged on the inner side of the pipe sleeve 12. The end of the exhaust pipe 13 away from the slider 2 is connected to a vacuum valve 14. The exhaust pipe 13 is connected to the two heat dissipation grooves 5. The vacuum valve 14 is installed on the end cover 3 on the front side of the slider 2. A through hole 15 corresponding to the pipe sleeve 12 is opened on the end cover 3. During the processing of the slider 2, a groove connected to the two heat dissipation grooves 5 is opened at the pipe sleeve 12, and the pipe sleeve 12 with the exhaust pipe 13 is welded to the front end of the slider 2. When the slider 2 is clamped with the end cover 3, the pipe sleeve 12 passes through the through hole 15, and the vacuum valve 14 is installed on the front end cover 3 so that the vacuum valve 14 is connected to the exhaust pipe 13. A vacuum pump is used to evacuate the heat dissipation groove 5. After a negative pressure chamber is formed in the heat dissipation groove 5, the vacuum valve 14 is closed.

[0037] Mutually symmetrical grooves 16 are provided at both ends of the inner side of the slider 2. Lugs 17 are fixedly connected to the front and rear ends of the slider 2. The lugs 17 on both sides of the linear guide 1 are symmetrical to each other. The lugs 17 are provided with inner return ball grooves 18 connected to the grooves 16. The end cover 3 is provided with a groove 19 corresponding to the lug 17 on one end facing the slider 2. An outer return ball groove 20 corresponding to the inner return ball groove 18 is provided inside the groove 19. The inner side of the end cover 3 has a guide block 21 corresponding to the groove 19. The guide block 21 has a groove corresponding to the outer return ball groove 20. The guide groove 22 is connected with the outer return ball groove 20 close to the linear guide rail 1, and a return ball straight groove 23 corresponding to the groove 16 is provided inside the slider 2. The return ball straight groove 23 is parallel to the groove 16, and the return ball straight groove 23 is connected with the inner return ball groove 18 and the outer return ball groove 20 on the front and rear sides of the slider 2. The linear guide rail 1 is provided with a strip groove 24 corresponding to the groove 16. The circulating raceway is composed of the groove 16, the strip groove 24, the return ball straight groove 23 and the inner return ball groove 18, the outer return ball groove 20 and the guide groove 22 on the front and rear sides of the slider 2.

[0038] The end cover 3 has two first plug blocks 25 in the middle of one end close to the slider 2, and the end cover 3 has second plug blocks 26 on both sides of one end close to the slider 2. The inner sides of the first plug block 25 and the second plug block 26 are provided with a slide groove 27, and the inner side of the slide groove 27 is slidably connected with a card block 28. The card block 28 is connected to the bottom of the slide groove 27 through a first spring 29. A slot 30 corresponding to the first plug block 25 and the second plug block 26 is provided on the end surface of the slider 2. A first card plate 31 is embedded in the top of the inner side of the slider 2. The first card plate 31 is set at the position between the slider 2 and the line Between the linear guide rails 1, second card plates 32 are embedded at both ends of the slider 2, the first card plate 31 and the second card plate 32 are connected to the slider 2 by bolts, the second card plate 32 is arranged between the slider 2 and the heat dissipation fins 9, and the slider 2 is provided with a groove body corresponding to the first card plate 31 and the second card plate 32, and the first card plate 31 and the second card plate 32 are provided with a card slot 33, the card slot 33 on the first card plate 31 corresponds to the card block 28 on the first plug-in block 25, and the card slot 33 on the second card plate 32 corresponds to the card block 28 on the second plug-in block 26.

[0039] The first clamping plate 31 and the second clamping plate 32 are both provided with a through slot 34 connected to the clamping slot 33. Countersunk holes 35 are provided at the front and rear ends of the slider 2. The countersunk holes 35 on both sides of the linear guide rail 1 are symmetrical to each other, and a second spring 36 is provided inside the countersunk hole 35.

[0040] A method for producing a high-precision rolling linear guide pair comprises the following steps:

[0041] S1. Clean and dry the raw materials of the linear guide rail 1, slider 2, end cap 3, cover plate 6, heat conducting plate 11, first pallet 31 and second pallet 32, derust and polish the raw materials of the linear guide rail 1, slider 2, end cap 3, cover plate 6, heat conducting plate 11, first pallet 31 and second pallet 32, and straighten the linear guide rail 1 and slider 2;

[0042] S2. Mill the linear guide rail 1, slider 2, end cap 3, cover plate 6, first clamping plate 31 and second clamping plate 32. Machine the strip groove 24 on the linear guide rail 1; machine the heat dissipation groove 5, heat conduction groove 10, groove 16, lug 17, inner return ball groove 18, return ball straight groove 23, slot 30 and countersunk hole 35 on the slider 2; and machine the groove 19, outer return ball groove 20, guide block 21, guide groove 22, first plug 25 and second plug 26 on the end cap 3; and provide a slide groove 27 on the first plug 25 and second plug 26. Machine the guide platform 7 and guide cone 8 on the cover plate 6; and provide a card slot 33 and a through slot 34 on the first clamping plate 31 and second clamping plate 32.

[0043] S3. Connect the block 28 to the slide groove 27 through the first spring 29, and inject a dummy shaft with the same cross-sectional shape and size as the linear guide 1. The dummy shaft has a strip groove corresponding to the groove 16. Insert the dummy shaft into the inner side of the slider 2, then first connect an end cap 3 to the slider 2, place the slider 2 vertically, fill the ball 4 into the return ball straight groove 23 and between the groove 16 and the strip groove, and arrange the remaining balls 4 in the inner return ball groove 18. When arranging the balls 4, magnetize the slider 2 so that the balls 4 have It is ferromagnetic and can be stably fixed in the inner return ball groove 18. The other end cover 3 is engaged with the slider 2. When the end cover 3 is engaged with the slider 2, the end cover 3 squeezes the second spring 36 into the countersunk hole 35. The first plug-in block 25 and the second plug-in block 26 are inserted into the slot 30. When the first plug-in block 25 and the second plug-in block 26 are inserted into the bottom of the slot 30, the clamping block 28 is clamped into the clamping groove 33 under the elastic force of the first spring 29. The second spring 36 in the countersunk hole 35 presses the end cover 3 tightly, providing prestress for the clamping block 28 and the clamping groove 33.

[0044] S4. Embed the first card plate 31 and the second card plate 32 into the slider 2, insert the heat conducting plate 11 into the heat conducting groove 10, and install the heat dissipation fins 9 on both sides of the slider 2 to complete the production of the rolling linear guide pair. When using the rolling linear guide pair, inject heat dissipation liquid into the heat dissipation groove 5, fix the cover plate 6 on the top of the heat dissipation groove 5, and fix the cover plate 6 on the top of the heat dissipation groove 5 by welding. When fixing the cover plate 6, the cover plate 6 can also be connected to the heat dissipation groove 5 by bolts, and then the connection between the cover plate 6 and the heat dissipation groove 5 is sealed with sealant. After the cover plate 6 is fixed, vacuum the heat dissipation groove 5, align the dummy shaft on the inside of the slider 2 with the linear guide 1, fix the dummy shaft and the linear guide 1 relatively, and push the slider 2 to the outside of the linear guide 1 to prevent the ball 4 from slipping out of the circulating raceway.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision rolling linear guide pair, comprising a linear guide rail (1), a slider (2) and two end caps (3), wherein the slider (2) is slidably connected to the outer side of the linear guide rail (1), and is characterized in that: Two end covers (3) are clamped on the front and rear ends of the slider (2); a circulating raceway symmetrically distributed on both sides of the linear guide rail (1) is formed between the slider (2) and the end covers (3); each circulating raceway is filled with balls (4); a heat dissipation groove (5) is provided on both sides of the slider (2); the two heat dissipation grooves (5) respectively penetrate the circulating raceways on both sides of the linear guide rail (1); a cover plate (6) is fixedly connected to the top of the heat dissipation groove (5); a negative pressure chamber is formed between the cover plate (6) and the heat dissipation groove (5); and a heat dissipation liquid is provided inside the negative pressure chamber.

2. A high-precision rolling linear guide pair according to claim 1, characterized in that: The middle part of the cover plate (6) protrudes downward to form a guide platform (7), and the bottom end of the guide platform (7) is fixedly connected with evenly distributed guide cones (8), and the guide cones (8) extend vertically to the lower part of the heat dissipation groove (5).

3. The high-precision rolling linear guide pair according to claim 2, characterized in that: Both ends of the slider (2) are detachably connected to heat dissipation fins (9), and the two heat dissipation fins (9) are respectively fitted with the two cover plates (6). Heat conduction grooves (10) are provided on both sides of the slider (2), and heat conduction plates (11) are provided inside the heat conduction grooves (10). The end of the heat conduction plate (11) away from the linear guide rail (1) is fitted with the heat dissipation fins (9).

4. The high-precision rolling linear guide pair according to claim 1, characterized in that: The front end of the slider (2) is fixedly connected to a pipe sleeve (12), an exhaust pipe (13) is obliquely arranged on the inner side of the pipe sleeve (12), and one end of the exhaust pipe (13) away from the slider (2) is connected to a vacuum valve (14), the exhaust pipe (13) is connected to the two heat dissipation grooves (5), and the vacuum valve (14) is installed on the end cover (3) on the front side of the slider (2), and a through hole (15) corresponding to the pipe sleeve (12) is opened on the end cover (3).

5. The high-precision rolling linear guide pair according to claim 3, characterized in that: Mutually symmetrical grooves (16) are provided at both ends of the inner side of the slider (2), and lugs (17) are fixedly connected to the front and rear ends of the slider (2). The lugs (17) on both sides of the linear guide rail (1) are symmetrical to each other, and an inner ball return groove (18) communicating with the groove (16) is provided on the lug (17). An end of the end cover (3) facing the slider (2) is provided with a groove (19) corresponding to the lug (17) in a one-to-one manner, and an outer ball return groove (20) corresponding to the inner ball return groove (18) is provided inside the groove (19). The inner side of the end cover (3) has a guide block (21) corresponding to the groove (19), and a guide block (21) corresponding to the outer ball return groove (20) is provided on the guide block. The guide groove (22) is connected to the outer ball return groove (20) near the linear guide rail (1); a ball return straight groove (23) corresponding to the groove (16) is opened inside the slider (2); the ball return straight groove (23) and the groove (16) are parallel to each other; the ball return straight groove (23) and the inner ball return groove (18) and the outer ball return groove (20) on the front and rear sides of the slider (2) are connected; a strip groove (24) corresponding to the groove (16) is opened on the linear guide rail (1); the circulating raceway is composed of the groove (16), the strip groove (24), the ball return straight groove (23) and the inner ball return groove (18), the outer ball return groove (20) and the guide groove (22) on the front and rear sides of the slider (2).

6. The high-precision rolling linear guide pair according to claim 5, characterized in that: The end cover (3) has two first plugs (25) at the middle of one end close to the slider (2), and the end cover (3) has second plugs (26) on both sides of one end close to the slider (2). The inner sides of the first plug (25) and the second plug (26) are provided with a slide groove (27), and the inner side of the slide groove (27) is slidably connected with a clamping block (28). The clamping block (28) is connected to the bottom of the slide groove (27) through a first spring (29). A slot (30) corresponding to the first plug (25) and the second plug (26) is provided on the end surface of the slider (2), and a first clamping plate (31) is embedded in the top of the inner side of the slider (2). The first clamping plate (31) is arranged between the slider (2) and the linear guide rail (1), and second card plates (32) are embedded at both ends of the slider (2). The second card plate (32) is arranged between the slider (2) and the heat dissipation fin (9). The slider (2) is provided with a slot body corresponding to the first card plate (31) and the second card plate (32). The first card plate (31) and the second card plate (32) are both provided with a card slot (33). The card slot (33) on the first card plate (31) corresponds to the card block (28) on the first plug-in block (25), and the card slot (33) on the second card plate (32) corresponds to the card block (28) on the second plug-in block (26).

7. The high-precision rolling linear guide pair according to claim 6, characterized in that: The first clamping plate (31) and the second clamping plate (32) are both provided with a through slot (34) connected to the clamping slot (33); the front and rear ends of the slider (2) are both provided with a countersunk hole (35); the countersunk holes (35) on both sides of the linear guide rail (1) are symmetrical to each other; and a second spring (36) is provided inside the countersunk hole (35).

8. The method for producing a high-precision rolling linear guide pair according to claim 7, characterized in that: The following steps are involved: S1. Clean and dry the raw materials of the linear guide rail (1), the slider (2), the end cover (3), the cover plate (6), the heat conducting plate (11), the first card plate (31) and the second card plate (32); remove rust and polish the raw materials of the linear guide rail (1), the slider (2), the end cover (3), the cover plate (6), the heat conducting plate (11), the first card plate (31) and the second card plate (32); and straighten the linear guide rail (1) and the slider (2); S2. Milling operation is performed on the linear guide rail (1), the slider (2), the end cover (3), the cover plate (6), the first card plate (31) and the second card plate (32), and a strip groove (24) is processed on the linear guide rail (1), and a heat dissipation groove (5), a heat conduction groove (10), a groove (16), a lug (17), an inner return ball groove (18), a return ball straight groove (23), a slot (30) and a countersunk hole (35) are processed on the slider (2) as well as the first card plate (31) and the second card plate. The groove body corresponding to the plate (32) is processed on the end cover (3) to form a groove (19), an outer bead return groove (20), a guide block (21), a guide groove (22), a first plug block (25) and a second plug block (26), and a slide groove (27) is provided on the first plug block (25) and the second plug block (26); a guide platform (7) and a guide cone (8) are processed on the cover plate (6), and a clamping groove (33) and a through groove (34) are provided on the first clamping plate (31) and the second clamping plate (32); S3. The block (28) is spring-connected to the slide groove (27) by a first spring (29), and a dummy shaft having the same cross-sectional shape and size as the linear guide rail (1) is injection-molded. The dummy shaft has a strip groove corresponding to the groove (16). The dummy shaft is inserted into the inner side of the slider (2). Then, one end cover (3) is first clamped to the slider (2). The slider (2) is placed vertically. The balls (4) are loaded into the ball return groove (23) and between the groove (16) and the strip groove. The remaining balls (4) are arranged in the inner ball return groove (18). The other end cover (3) is clamped to the slider (2). S4. The first card plate (31) and the second card plate (32) are embedded in the slider (2), and the heat conducting plate (11) is inserted into the heat conducting groove (10), and the heat dissipation fins (9) are installed on both sides of the slider (2), thereby completing the production of the rolling linear guide pair.

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