Linear guide rail sliding block with adjustable prepressing

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a prepressing-adjustable linear guide rail sliding block which comprises a sliding block body, a through hole and a groove are formed in the sliding block body, and a rolling channel is formed between the groove and a sliding rail; the adjusting gap is formed in the sliding block body and is communicated with the groove and the through hole; and the adjusting screw penetrates through the adjusting gap and is used for adjusting the gap of the adjusting gap. The device further comprises a channel plate, the channel plate is arranged in the groove, a rolling groove is formed in the channel plate, and the rolling groove and the sliding rail are matched with each other to form a rolling channel. According to the sliding block, micro-deformation adjustment can be conducted on the radius of the groove in the sliding block body at any time through the adjusting gap and the adjusting screw, transverse displacement of the rolling groove is achieved, and prepressing adjustability is achieved; due to the split structure of the channel plate and the sliding block body, overall heat treatment of the sliding block can be avoided, and a heat treatment mode of only rolling the channel is changed.

Description

Technical Field

[0001] This application relates to the field of linear guide technology, and in particular to a linear guide slider with adjustable preload. Background Technology

[0002] To ensure the rigidity of the linear guide, current technology requires multiple adjustments of the steel balls during the linear guide assembly process to achieve the appropriate preload. The preload of the linear guide is adjusted by increasing the diameter of the steel balls. Due to component machining errors and the different preload ranges required for the guides, even for the same model of guide, dozens of different steel ball diameters need to be prepared. This leads to inconvenience in on-site management and the risk of ball mixing.

[0003] Furthermore, in existing technologies, the preload can only be adjusted during the initial assembly of the slider by selecting steel balls of different diameters. Once the slider preload is adjusted, it cannot be adjusted further. However, after the slider is assembled and put into normal use, as the steel balls and rolling channels wear down, the preload will gradually decrease until it disappears completely. This leads to a decrease in the overall contact rigidity of the guide rail, significantly reducing its load-bearing capacity and causing it to lose its original precision retention. Adjustment requires disassembling and returning the machine to the factory to replace the steel balls, which is extremely inconvenient and inefficient. Utility Model Content

[0004] The technical problem this invention aims to solve is that the preload of existing linear guides can only be adjusted during assembly and cannot adapt to changes in preload during slider use.

[0005] Therefore, this utility model provides a linear guide slider with adjustable preload.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A preload-adjustable linear guide slider, comprising,

[0008] A slider body, wherein a through hole and a groove are provided on the slider body, and a rolling channel is formed between the groove and the slide rail;

[0009] An adjustable gap is provided on the slider body and communicates with the groove and the through hole;

[0010] An adjusting screw, which passes through the adjusting gap, is used to adjust the gap of the adjusting gap.

[0011] Furthermore, within the reference plane, the adjustment gap is set along the line connecting the axis of the through hole and the axis of the groove.

[0012] Furthermore, the adjusting screw is located at the bottom of the slider body, and the bottom of the slider body has a countersunk hole for accommodating the head of the adjusting screw.

[0013] Furthermore, along the length direction of the adjusting screw, the depth H of the countersunk hole is greater than the length d of the adjusting screw head.

[0014] Furthermore, it also includes a groove plate, which is disposed in the groove and has a rolling groove, which cooperates with the slide rail to form a rolling channel.

[0015] Furthermore, the channel plate is configured to be arc-shaped to match the shape of the groove.

[0016] Furthermore, multiple groove plates can be provided along the length direction of the slider body, and adjacent groove plates are fitted together.

[0017] Furthermore, of the channel plate and the slider body, only the channel plate is a heat-treated component.

[0018] The beneficial effects of this utility model are that, by setting an adjustable gap, the radius of the groove can be adjusted. This allows the preload of the groove and the steel ball to be changed during the slider assembly state. Therefore, in addition to adjusting the preload via the steel ball at the factory, even during the customer's use phase, if friction and wear cause a reduction or loss of preload, the customer can replenish and restore the preload through the adjustment mechanism. This improves the convenience and flexibility of preload adjustment.

[0019] Meanwhile, this application sets an independent channel plate in the groove, avoiding the overall heat treatment of the slider, and instead heat-treating only the channel part under stress, while the rest of the slider remains in a non-heat-treated state, thus avoiding large deformation and energy waste from overall heat treatment. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the assembly between the slider body and the slide rail in this utility model.

[0022] Figure 2 This is a schematic diagram of the assembly relationship between the channel plate and the slider body in this utility model.

[0023] Figure 3 This is a schematic diagram of the channel plate in this utility model.

[0024] Figure 4 It is used to embody Figure 2 Enlarged view of section A of the countersunk hole.

[0025] In the diagram: 1. Slider body; 2. Slide rail; 3. Groove; 4. Groove plate; 5. Rolling groove; 6. Through hole; 7. Adjusting gap; 8. Adjusting screw; 9. Countersunk hole. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1 , 2 As shown, a preload adjustable linear guide slider includes a slider body 1 and a groove plate 4. The slider body 1 cooperates with the slide rail 2. The slider body 1 is provided with a through hole and a groove 3. The groove plate 4 is disposed in the groove 3. The groove plate 4 is set in an arc shape to match the shape of the groove 3. The groove plate 4 is provided with a rolling groove 5. The rolling groove 5 and the slide rail 2 cooperate with each other to form a rolling groove.

[0030] It should be noted that multiple channel plates 4 can be provided along the length of the slider body 1, and adjacent channel plates 4 are fitted together, such as... Figure 3As shown, the total length of the multiple channel plates 4 is adapted to the length of the slider body 1. The channel plates 4 are heat-treated by high-frequency quenching. In other embodiments, the channel plates 4 can be embedded in the grooves 3 to limit the ends of the channel plates 4.

[0031] An adjustment gap 7 is provided between the through hole and the groove 3. The adjustment gap 7 is connected to both the groove 3 and the through hole. The surface perpendicular to the extension direction of the slide rail 2 is defined as the reference surface. Within the reference surface, the adjustment gap 7 is set along the line connecting the axis of the through hole and the axis of the groove 3.

[0032] An adjusting screw 8 is provided on the slider body 1. The adjusting screw 8 passes through the adjusting gap 7, and its length direction is perpendicular to the plane of the adjusting gap 7. The adjusting screw 8 is used to adjust the gap of the adjusting gap 7. In this embodiment, the adjusting screw 8 is located at the bottom of the slider body 1, and the bottom of the slider body 1 is provided with a countersunk hole 9 to accommodate the head of the adjusting screw 8. Figure 4 As shown, along the length direction of the adjusting screw 8, the depth H of the countersunk hole 9 is greater than the length d of the head of the adjusting screw 8, thereby preventing the adjusting screw 8 from interfering with the sliding block sliding along the guide rail.

[0033] The width of the adjusting gap 7 can be changed by tightening the adjusting screw 8, causing the rolling groove mating part of the slider body 1 to generate a compressive force in the direction of the arrow in Figure 2. The groove plate 4, subjected to this compressive force, generates a displacement S in the direction of the rolling groove, thereby generating a certain compressive force f on the steel ball, thus adjusting the rigidity of the slide rail 2. Furthermore, the tightening torque of the adjusting screw 8 can be quantitatively controlled through theoretical calculations, that is, the relationship between the tightening torque of the adjusting screw 8, the compressive force, and the preload for each specification of slide rail 2 can be obtained, achieving quantitative control over different preload specifications and making the preload controllable.

[0034] Existing sliders, whether forged or drawn, employ integral heat treatment to ensure overall hardness and wear resistance. However, the slider's core load-bearing capacity primarily relies on the rolling grooves. Therefore, ensuring the hardness and wear resistance of the rolling grooves is sufficient. Current integral heat treatment processes treat other surfaces and the internal structure of the slider that don't necessarily require guaranteed hardness and wear resistance, resulting in wasted energy and time. Furthermore, the thermal deformation caused by integral heat treatment increases the difficulty of subsequent precision grinding, leading to unnecessary machining allowances. Moreover, changes in the overall material structure reduce the efficiency of subsequent precision machining and decrease tool life.

[0035] In this application, an independent channel plate 4 is set in the groove 3. Only the channel plate 4 is a heat-treated part. The heat-treated part is a component that has undergone heat treatment. The heat treatment is carried out using existing heat treatment processes. Therefore, only the channel plate 4 under stress needs to be heat-treated. The slider body 1 can remain in a non-heat-treated state, avoiding large deformation and energy waste from overall heat treatment.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A linear guide slider with adjustable preload, characterized in that, include, The slider body (1) is provided with a through hole and a groove (3), and a rolling channel is formed between the groove (3) and the slide rail (2); Adjustment gap (7) is provided on slider body (1) and communicates with groove (3) and through hole; An adjusting screw (8) passes through the adjusting gap (7) and is used to adjust the gap of the adjusting gap (7).

2. The preload-adjustable linear guide slider according to claim 1, characterized in that, Within the reference plane, the adjustment gap (7) is set along the line connecting the axis of the through hole and the axis of the groove (3).

3. The preload-adjustable linear guide slider according to claim 1, characterized in that, The adjusting screw (8) is located at the bottom of the slider body (1), and the bottom of the slider body (1) is provided with a countersunk hole (9) for accommodating the head of the adjusting screw (8).

4. The preload-adjustable linear guide slider according to claim 3, characterized in that, Along the length direction of the adjusting screw (8), the depth H of the countersunk hole (9) is greater than the length d of the head of the adjusting screw (8).

5. The preload-adjustable linear guide slider according to claim 1, characterized in that, It also includes a groove plate (4), which is disposed in the groove (3). A rolling groove (5) is provided on the groove plate (4), and the rolling groove (5) cooperates with the slide rail (2) to form a rolling groove.

6. The preload-adjustable linear guide slider according to claim 5, characterized in that, The channel plate (4) is set to be arc-shaped to match the shape of the groove (3).

7. The preload-adjustable linear guide slider according to claim 5, characterized in that, Multiple channel plates (4) can be provided along the length direction of the slider body (1), and adjacent channel plates (4) are in contact with each other.

8. The preload-adjustable linear guide slider according to claim 5, characterized in that, Of the channel plate (4) and the slider body (1), only the channel plate (4) is a heat-treated part.

Images