A double-groove embedded linear module

Abstract

The utility model provides a kind of embedded double-groove linear module, including base, first embedded groove, second embedded groove and moving seat, first embedded groove and second embedded groove are symmetrically arranged in the inner wall of base two sides, the two sides of moving seat are slidably connected with base by respectively passing through corresponding side first embedded groove, second embedded groove, the two sides of moving seat are respectively equipped with ball guide structure, ball guide structure includes the first roller chain and the second roller chain of parallel arrangement, the first commutator and the second commutator of opposite arrangement, the bending portion of first roller chain both ends passes through first commutator and second commutator, the bending portion of second roller chain both ends passes through first commutator and second commutator, guide slide strip is arranged in the length direction of base in first embedded groove, the upper surface of guide slide strip is slidably matched with second roller chain, the lower surface of guide slide strip is slidably matched with first roller chain;The linear module of the utility model has the characteristics of excellent moving stability and long service life.

Description

Technical Field

[0001] This utility model belongs to the technical field of linear modules, and in particular relates to an embedded double-groove linear module. Background Technology

[0002] Linear modules are widely used in fields such as automated equipment and precision machine tools, with the core requirement being to achieve stable and efficient linear transmission.

[0003] Existing linear modules mostly employ single-groove or asymmetrical double-groove designs. Single-groove structures have limited load-bearing capacity and are prone to accelerated wear due to concentrated stress. While asymmetrical double-groove designs improve load-bearing capacity, uneven stress distribution during sliding of the moving seat can cause wobbling and affect transmission accuracy. Furthermore, the ball bearing guide structure in some modules features an inclined and crossed arrangement of the roller chains, further exacerbating localized stress concentration, shortening the module's lifespan, and lacking targeted guide optimization structures, making it difficult to meet the transmission stability and durability requirements of high-precision equipment.

[0004] Therefore, a novel embedded dual-groove linear module is needed. Utility Model Content

[0005] The main purpose of this utility model is to provide an embedded double-groove linear module to address the shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An embedded double-groove linear module includes a base, a first embedded groove, a second embedded groove, and a movable seat. The first and second embedded grooves are symmetrically arranged on the inner walls of both sides of the base. The two sides of the movable seat are slidably connected to the base through the corresponding first and second embedded grooves. A ball bearing guide structure is installed on both sides of the movable seat. The ball bearing guide structure includes a first and second roller chain arranged in parallel, and a first and second commutator arranged opposite to each other. The bent portions at both ends of the first roller chain pass through the first and second commutator, and the bent portions at both ends of the second roller chain pass through the first and second commutator. A guide strip is provided in the first embedded groove along the length direction of the base. The upper surface of the guide strip slides in cooperation with the second roller chain, and the lower surface of the guide strip slides in cooperation with the first roller chain.

[0008] Preferably, the first roller chain includes a plurality of first balls forming a ring structure, and the second roller chain includes a plurality of second balls forming a ring structure.

[0009] Preferably, the first commutator has a first arc groove and a second arc groove in the height direction, and the second commutator has a third arc groove and a fourth arc groove in the height direction. The first ball passes through the first arc groove and the third arc groove in sequence, and the second ball passes through the second arc groove and the fourth arc groove in sequence.

[0010] Preferably, auxiliary slides are fixedly provided on both sides of the movable seat along the length direction of the base. A first through hole and a second through hole are respectively provided on both sides of the movable seat in the height direction near the auxiliary slides. The first ball passes through the first arc groove, the first through hole and the third arc groove in sequence, and the second ball passes through the second arc groove, the second through hole and the fourth arc groove in sequence.

[0011] Preferably, both the first commutator and the second commutator have baffles on their outer sides, and a fixing member passes through the baffles and the first commutator to fix the first commutator to the front end of the movable seat, and a fixing member passes through the baffles and the second commutator to fix the second commutator to the rear end of the movable seat.

[0012] Preferably, a semi-cylinder is fixedly installed at the front end of the auxiliary slide. The semi-cylinder is provided with a first transition groove and a second transition groove along the height direction. The first transition groove and the first arc groove form a first cavity for accommodating a first ball. The second transition groove and the second arc groove form a second cavity for accommodating a second ball. The first ball passes through the first cavity, the first through hole and the third arc groove in sequence. The second ball passes through the second cavity, the second through hole and the fourth arc groove in sequence.

[0013] Preferably, it further includes a front end cover, a first bearing, a lead screw, a lead screw nut, a bearing pressure plate, a second bearing, and a fixed seat. The front end cover is located at the front end of the base. The front end of the lead screw is connected to the front end cover through the first bearing. The rear end of the lead screw is connected to the fixed seat through the second bearing. The lead screw passes through the movable seat. The lead screw nut is sleeved on the outer circumference of the lead screw and fixedly connected to the front end of the movable seat. The second bearing is fixed in the fixed seat through the bearing pressure plate.

[0014] Preferably, the rear end of the lead screw passes through the fixed seat and is fixedly connected to the rear end of the fixed seat by a locking nut.

[0015] Preferably, a retaining ring is provided between the locking nut and the fixing seat.

[0016] Preferably, both the front cover and the base are provided with a plurality of anti-collision pads.

[0017] Compared with the prior art, the present invention will have at least the following beneficial effects:

[0018] The linear module of this utility model adopts a symmetrical embedded double groove design, combined with the ball guide structure on both sides of the moving seat, so that the moving seat is evenly stressed, reducing sliding and shaking, and improving transmission accuracy.

[0019] The ball bearing guide structure in this utility model uses a first and second ball bearing arranged in parallel, which, combined with the guiding effect of the guide strip, reduces local stress concentration, reduces component wear, and extends the service life of the module.

[0020] The front cover and base of this utility model are equipped with anti-collision rubber pads, which can buffer the impact when the movable seat moves and protect the components.

[0021] The linear module of this invention has a simple and compact overall structure, strong adaptability, and can meet the requirements of high-precision linear transmission. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort, wherein:

[0023] Figure 1 This is a schematic diagram of the embedded double-groove linear module of this utility model;

[0024] Figure 2 This is an exploded view of the embedded double-groove linear module of this utility model;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0026] Figure 4 This is a front view of the embedded double-groove linear module of this utility model;

[0027] Figure 5 This is an exploded view of the base and ball guide structure in the embedded double groove linear module of this utility model.

[0028] Figure 6 This is an exploded view of the base and ball guide structure in the embedded double groove linear module of this utility model from another perspective.

[0029] Figure 7 This is a partial structural diagram of the base and fixing seat in the embedded double-groove linear module of this utility model.

[0030] The reference numerals in the figures include:

[0031] 1. Base; 2. First embedded groove; 3. Second embedded groove; 4. Movable seat; 5. First roller chain; 6. Second roller chain; 7. First commutator; 8. Second commutator; 9. Guide strip; 10. First ball bearing; 11. Second ball bearing; 12. First arc groove; 13. Second arc groove; 14. Third arc groove; 15. Fourth arc groove; 16. Auxiliary slide; 17. First through hole; 18. Second through hole; 19. Baffle; 20. Semi-cylinder; 21. First transition groove; 22. Second transition groove; 23. Front end cover; 24. First bearing; 25. Lead screw; 26. Lead screw nut; 27. Bearing pressure plate; 28. Second bearing; 29. ​​Fixed seat; 30. Locking nut; 31. Fixing ring; 32. Anti-collision pad. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary embodiments of this utility model, and not the only embodiments.

[0033] like Figures 1 to 7 As shown, the embedded double-groove linear module includes a base 1, a first embedded groove 2, a second embedded groove 3, and a movable seat 4. The first embedded groove 2 and the second embedded groove 3 facilitate the sliding of the movable seat 4 on the base 1, and the movable seat 4 carries the components that need to move with it.

[0034] The first embedded groove 2 and the second embedded groove 3 are symmetrically arranged on the inner walls of both sides of the base 1. The two sides of the movable seat 4 are slidably connected to the base 1 through the corresponding first embedded groove 2 and second embedded groove 3. The two sides of the movable seat 4 are respectively equipped with ball guide structures. The ball guide structures are used to guide the movement of the movable seat 4 along the base 1. Furthermore, the ball guide structures can reduce the friction of the movable seat 4 moving along the base 1 and improve the movement efficiency of the movable seat 4.

[0035] like Figure 2 , Figure 3 As shown, the ball bearing guide structure includes a first ball bearing chain 5 and a second ball bearing chain 6 arranged in parallel, and a first commutator 7 and a second commutator 8 arranged opposite each other. The bent portions at both ends of the first ball bearing chain 5 pass through the first commutator 7 and the second commutator 8, and the bent portions at both ends of the second ball bearing chain 6 also pass through the first commutator 7 and the second commutator 8. In the prior art, the first ball bearing chain and the second ball bearing chain are arranged at an angle and cross each other, which will cause uneven force on the moving seat when it is bearing load and sliding along the base. However, in this embodiment, the parallel arrangement of the first ball bearing chain 5 and the second ball bearing chain 6 can make the force direction of the moving seat 4 consistent, which can reduce local stress concentration, thereby extending the service life of the linear module and improving the overall stability of the linear module during use.

[0036] In the actual setup, the first roller chain 5 is close to the base 1, the second roller chain 6 is located above the first roller chain 5, the first commutator 7 is located at the front end of the movable base 4, and the second commutator 8 is located at the rear end of the movable base 4. The first commutator 7 allows the first roller chain 5 and the second roller chain 6 to reverse direction within it, and similarly, the second commutator 8 allows the first roller chain 5 and the second roller chain 6 to reverse direction within it. The first roller chain 5 includes several first balls 10, which form a ring structure. The second roller chain 6 includes several second balls 11, which also form a ring structure.

[0037] Specifically, in actual operation, the first roller chain 5 moves along the length of the base 1 within the first embedded groove 2. When the first ball bearing 10 on the first roller chain 5 moves to one of the bends of the first roller chain 5, it enters the first commutator 7 on the same side as the bend to complete the reversing and continue moving. When the first ball bearing 10 on the first roller chain 5 moves to another bend of the first roller chain 5, it enters the second commutator 8 on the same side as the bend to complete the reversing and then re-enters the first embedded groove 2 to continue moving. The above process is repeated to complete the continuous movement of the first roller chain 5. Similarly, the second roller chain 6 adopts the same movement method as the first roller chain 5 to complete the reversing in the first commutator 7 and the second commutator 8, thereby completing the continuous movement of the second roller chain 6.

[0038] A guide strip 9 is provided in the first embedded groove 2 along the length of the base 1. The upper surface of the guide strip 9 slides in cooperation with the second roller chain 6, and the lower surface of the guide strip 9 slides in cooperation with the first roller chain 5. The guide strip 9 allows the first ball 10 on the first roller chain 5 and the second ball 11 on the second roller chain 6 to move along the guide strip 9. It should be noted that the surface of the guide strip 9 is smooth, which can improve the moving speed of the first ball 10 and the second ball 11.

[0039] Understandably, since both sides of the movable seat 4 are provided with ball bearing guide structures, a guide strip 9 is also provided in the second inner groove along the length of the base 1, which improves the balance and stability of the movable seat 4 when it slides along the base 1.

[0040] The first commutator 7 has a first arc groove 12 and a second arc groove 13 in its height direction, and the second commutator 8 has a third arc groove 14 and a fourth arc groove 15 in its height direction. The first ball 10 passes through the first arc groove 12 and the third arc groove 14 in sequence, and the second ball 11 passes through the second arc groove 13 and the fourth arc groove 15 in sequence. This arrangement can improve the efficiency of the first commutator 7 and the second commutator 8. Furthermore, the coordinated action of the first ball 10 on the first roller chain 5 passing through the first arc groove 12 and the third arc groove 14 in sequence, and the second ball 11 on the second roller chain 6 passing through the second arc groove 13 and the fourth arc groove 15 in sequence, enables the first roller chain 5 and the second roller chain 6 to stably complete the commutation within the first commutator 7 and the second commutator 8.

[0041] Auxiliary slides 16 are fixedly provided on both sides of the movable seat 4 along the length of the base 1. A first through hole 17 and a second through hole 18 are respectively provided on both sides of the movable seat 4 near the height of the auxiliary slides 16. The first ball 10 passes through the first arc groove 12, the first through hole 17 and the third arc groove 14 in sequence, and the second ball 11 passes through the second arc groove 13, the second through hole 18 and the fourth arc groove 15 in sequence. It can be understood that the auxiliary slides 16 are used to improve the moving efficiency and reversing efficiency of the first ball 10 on the first roller chain 5 and the second ball 11 on the second roller chain 6.

[0042] Specifically, in actual operation, the first roller chain 5 moves along the length of the base 1 within the first embedded groove 2. When the first ball bearing 10 on the first roller chain 5 moves to one of the bends of the first roller chain 5, it enters the first arc groove 12 on the first commutator 7 on the same side as the bend to change direction and then enters the first through hole 17 to continue moving. When the first ball bearing 10 on the first roller chain 5 moves within the first through hole 17 to another bend of the first roller chain 5, it enters the third arc groove 14 on the second commutator 8 on the same side as the bend to change direction and then re-enters the first embedded groove 2 to continue moving. This process is repeated to complete the holding of the first roller chain 5. Continue moving; similarly, the second roller chain 6 moves along the length direction of the base 1 within the first embedded groove 2. When the second ball 11 on the second roller chain 6 moves to one of the bends of the second roller chain 6, it enters the second arc groove 13 on the first commutator 7 on the same side as the bend to change direction and enter the second through hole 18 to continue moving. When the second ball 11 on the second roller chain 6 moves within the second through hole 18 to another bend of the second roller chain 6, it enters the fourth arc groove 15 on the second commutator 8 on the same side as the bend to change direction and enter the first embedded groove 2 again to continue moving. Repeat the above process to complete the continuous movement of the second roller chain 6.

[0043] Both the first commutator 7 and the second commutator 8 are provided with baffles 19 on their outer sides. The fixing member passes through the baffles 19 and the first commutator 7 to fix the first commutator 7 to the front end of the movable seat 4. The fixing member passes through the baffles 19 and the second commutator 8 to fix the second commutator 8 to the rear end of the movable seat 4.

[0044] A semi-cylinder 20 is fixedly installed at the front end of the auxiliary slide 16. The semi-cylinder 20 is provided with a first transition groove 21 and a second transition groove 22 along the height direction. The first transition groove 21 cooperates with the first arc groove 12 to form a first cavity for accommodating the first ball 10. The second transition groove 22 cooperates with the second arc groove 13 to form a second cavity for accommodating the second ball 11. The first ball 10 passes through the first cavity, the first through hole 17 and the third arc groove 14 in sequence. The second ball 11 passes through the second cavity, the second through hole 18 and the fourth arc groove 15 in sequence.

[0045] Specifically, in actual operation, the first roller chain 5 moves along the length of the base 1 within the first embedded groove 2. When the first ball bearing 10 on the first roller chain 5 moves to one of the bends of the first roller chain 5, it enters the first cavity on the same side as the bend to change direction and then enters the first through hole 17 to continue moving. When the first ball bearing 10 on the first roller chain 5 moves within the first through hole 17 to another bend of the first roller chain 5, it enters the third arc groove 14 on the second commutator 8 on the same side as the bend to change direction and then re-enters the first embedded groove 2 to continue moving. This process is repeated to complete the holding of the first roller chain 5. Continue moving; similarly, the second roller chain 6 moves along the length direction of the base 1 in the first embedded groove 2. When the second ball 11 on the second roller chain 6 moves to one of the bends of the second roller chain 6, it enters the second cavity on the same side as the bend and reverses direction to enter the second through hole 18 to continue moving. When the second ball 11 on the second roller chain 6 moves to the other bend of the second roller chain 6 in the second through hole 18, it enters the fourth arc groove 15 on the second commutator 8 on the same side as the bend and reverses direction to enter the first embedded groove 2 again to continue moving. Repeat the above process to complete the continuous movement of the second roller chain 6.

[0046] The linear module in this embodiment also includes a front cover 23, a first bearing 24, a lead screw 25, a lead screw nut 26, a bearing pressure plate 27, a second bearing 28, and a fixed base 29. The front cover 23 is located at the front end of the base 1. The front end of the lead screw 25 is connected to the front cover 23 through the first bearing 24, and the rear end of the lead screw 25 is connected to the fixed base 29 through the second bearing 28. The lead screw 25 passes through the movable base 4. The lead screw nut 26 is sleeved on the outer periphery of the lead screw 25 and fixedly connected to the front end of the movable base 4. The second bearing 28 is fixed in the fixed base 29 through the bearing pressure plate 27.

[0047] The lead screw 25 provides drive guidance for the movement of the movable seat 4 on the base 1. The arrangement of the first bearing 24, the lead screw 25, the lead screw 25 nut, the bearing pressure plate 27, the second bearing 28 and the fixed seat 29, as well as the positional connection relationship between the components, are within the scope of the prior art, and therefore will not be described in detail here.

[0048] The rear end of the lead screw 25 passes through the fixed seat 29 and is fixedly connected to the rear end of the fixed seat 29 through the locking nut 30.

[0049] A retaining ring 31 is provided between the locking nut 30 and the fixing seat 29. The retaining ring 31 can enhance the connection stability between the locking nut 30 and the fixing seat 29.

[0050] like Figure 7 As shown, both the front cover 23 and the base 1 are provided with several anti-collision pads 32. When the movable seat 4 moves along the base 1, the anti-collision pads 32 on the front cover 23 can provide cushioning and protection for the front end of the movable seat 4. It should be noted that the anti-collision pads 32 on the front cover 23 are set facing the front end of the movable seat 4. Furthermore, when the movable seat 4 moves along the base 1, the anti-collision pads 32 on the base 1 can provide cushioning and protection for the bottom of the movable seat 4. It should be noted that the anti-collision pads 32 on the base 1 are set on the upper surface of the base 1 and at the rear end of the base 1 and close to the fixed seat 29, so as to prevent the movable seat 4 from hitting the fixed seat 29.

[0051] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An embedded double-groove linear module, characterized in that, The device includes a base (1), a first embedded groove (2), a second embedded groove (3), and a movable seat (4). The first embedded groove (2) and the second embedded groove (3) are symmetrically arranged on the inner walls of both sides of the base (1). The two sides of the movable seat (4) are slidably connected to the base (1) through the corresponding first embedded groove (2) and second embedded groove (3). Ball guide structures are installed on both sides of the movable seat (4). The ball guide structures include a first ball chain (5) and a second ball chain (6) arranged in parallel. For the first commutator (7) and the second commutator (8), the bent portions at both ends of the first roller chain (5) pass through the first commutator (7) and the second commutator (8), and the bent portions at both ends of the second roller chain (6) pass through the first commutator (7) and the second commutator (8). A guide strip (9) is provided in the first embedded groove (2) along the length direction of the base (1). The upper surface of the guide strip (9) slides with the second roller chain (6), and the lower surface of the guide strip (9) slides with the first roller chain (5).

2. The embedded double-groove linear module according to claim 1, characterized in that, The first roller chain (5) includes a plurality of first balls (10), which form a ring structure. The second roller chain (6) includes a plurality of second balls (11), which form a ring structure.

3. The embedded double-groove linear module according to claim 2, characterized in that, The first commutator (7) is provided with a first arc groove (12) and a second arc groove (13) in the height direction, and the second commutator (8) is provided with a third arc groove (14) and a fourth arc groove (15) in the height direction. The first ball (10) passes through the first arc groove (12) and the third arc groove (14) in sequence, and the second ball (11) passes through the second arc groove (13) and the fourth arc groove (15) in sequence.

4. The embedded double-groove linear module according to claim 3, characterized in that, Auxiliary slides (16) are fixedly provided on both sides of the movable seat (4) along the length direction of the base (1). A first through hole (17) and a second through hole (18) are respectively provided on both sides of the movable seat (4) in the height direction near the auxiliary slides (16). The first ball (10) passes through the first arc groove (12), the first through hole (17) and the third arc groove (14) in sequence. The second ball (11) passes through the second arc groove (13), the second through hole (18) and the fourth arc groove (15) in sequence.

5. The embedded double-groove linear module according to claim 4, characterized in that, Both the first commutator (7) and the second commutator (8) are provided with baffles (19) on their outer sides. A fixing member passes through the baffles (19) and the first commutator (7) to fix the first commutator (7) to the front end of the movable seat (4). A fixing member passes through the baffles (19) and the second commutator (8) to fix the second commutator (8) to the rear end of the movable seat (4).

6. The embedded double-groove linear module according to claim 5, characterized in that, A semi-cylinder (20) is fixedly installed at the front end of the auxiliary slide (16). The semi-cylinder (20) is provided with a first transition groove (21) and a second transition groove (22) along the height direction. The first transition groove (21) and the first arc groove (12) form a first cavity for accommodating the first ball (10). The second transition groove (22) and the second arc groove (13) form a second cavity for accommodating the second ball (11). The first ball (10) passes through the first cavity, the first through hole (17) and the third arc groove (14) in sequence. The second ball (11) passes through the second cavity, the second through hole (18) and the fourth arc groove (15) in sequence.

7. The embedded double-groove linear module according to claim 1, characterized in that, It also includes a front cover (23), a first bearing (24), a lead screw (25), a lead screw nut (26), a bearing pressure plate (27), a second bearing (28), and a fixed seat (29). The front cover (23) is located at the front end of the base (1). The front end of the lead screw (25) is connected to the front cover (23) through the first bearing (24). The rear end of the lead screw (25) is connected to the fixed seat (29) through the second bearing (28). The lead screw (25) passes through the movable seat (4). The lead screw nut (26) is sleeved on the outer circumference of the lead screw (25) and fixedly connected to the front end of the movable seat (4). The second bearing (28) is fixed inside the fixed seat (29) through the bearing pressure plate (27).

8. The embedded double-groove linear module according to claim 7, characterized in that, The rear end of the lead screw (25) passes through the fixed seat (29) and is fixedly connected to the rear end of the fixed seat (29) by a locking nut (30).

9. The embedded double-groove linear module according to claim 8, characterized in that, A retaining ring (31) is provided between the locking nut (30) and the fixing seat (29).

10. The embedded double-groove linear module according to claim 7, characterized in that, Both the front cover (23) and the base (1) are provided with a number of anti-collision pads (32).

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