Flat slide module with variable stroke function

Abstract

The utility model provides a kind of plane sliding module with variable stroke function, including sliding part, X axis sliding limiting part, Y axis sliding limiting part and fixed bottom plate;Sliding part includes moving flat plate and the sliding block of installation in the bottom of moving flat plate, the top of moving flat plate is used to place moving part, sliding block is slidably arranged on fixed bottom plate, and located in the frame of fixed bottom plate;X axis sliding limiting part is as the adjustable sliding boundary of X, for blocking the X direction sliding of sliding block;Y axis sliding limiting part is as the adjustable sliding boundary of Y, for blocking the Y direction sliding of sliding block;The utility model controls the stroke range of sliding part in X axis and Y axis direction respectively accurately, solve the existing sliding mechanism stroke fixed, cannot flexibly adapt to different working area demand Problem, realizes in the accurate parking and movement of any horizontal position in specific rectangular range, and passive guiding function under heavy load condition can be realized by moving flat plate of top.

Description

Technical Field

[0001] This utility model relates to the field of sliding module technology, specifically to a planar sliding module with variable stroke function, and more particularly to a low-friction double-layer sliding module for horizontal movement across the entire range of a variable specific plane. Background Technology

[0002] Slide table structures, as a fundamental motion control device, are widely used in precision machining and automated assembly. Among them, the cross slide table is a typical planar positioning structure, usually composed of two sets of orthogonally stacked linear slide table modules. Specifically, one set of linear slide tables for X-axis motion is rigidly mounted on the slider of another set of linear slide tables for Y-axis motion. Thus, the final degree of freedom of the moving component fixed on the X-axis slide table is determined by the combined degree of freedom of the X-axis and Y-axis slide tables, thereby giving the moving component the freedom to move in a straight line or a specific curved trajectory in a two-dimensional plane. Currently, traditional cross slide structures, such as the ball screw cross slide disclosed in patent document CN113787494B, rely on a single cylinder or linear motor for their core drive mechanism. Their motion accuracy and guiding stability depend primarily on the precision of the sliding guide rail itself. This structure has the following drawbacks: 1. Insufficient load-bearing capacity and stability: Because the support and guidance of the motion platform depend on the slider on the linear guide rail, its contact area with the guide rail is limited. Furthermore, the motion platform of a traditional cross slide typically lacks a large load-bearing surface, resulting in poor stability when carrying heavy or large objects, making it difficult to meet the requirements for stable placement and precise motion under heavy-load conditions. 2. Fixed stroke: Traditional cross slides have a fixed stroke and cannot flexibly adapt to different working area requirements. 3. Large height dimension: Traditional cross slides are formed by stacking X-axis slides on Y-axis slides, resulting in a large required height space. Utility Model Content

[0003] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a planar sliding module with variable stroke function.

[0004] The planar sliding module with variable stroke function provided by this utility model includes a sliding part, an X-axis sliding limiting part, a Y-axis sliding limiting part, and a fixed base plate; The sliding part includes a movable plate and a sliding block installed on the bottom of the movable plate. The top of the movable plate is used to place the moving parts. The sliding block is slidably disposed on the fixed base plate and is located within the frame of the fixed base plate. The X-axis sliding limiting part includes an X-axis linear motion mechanism and an X-axis travel baffle. The X-axis linear motion mechanism is installed on the side of the fixed base plate and is used to drive the X-axis travel baffle to move along the X-axis direction. The X-axis travel baffle serves as the sliding boundary of the sliding block in the X direction and is used to block the sliding block from sliding in the X direction. The Y-axis sliding limiting part includes a Y-axis linear motion mechanism and a Y-axis travel baffle. The Y-axis linear motion mechanism is installed on the side of the fixed base plate and is used to drive the Y-axis travel baffle to move along the Y-axis direction. The Y-axis travel baffle serves as the sliding boundary of the sliding block in the Y direction and is used to block the sliding block from sliding in the Y direction. The sliding block is configured such that, when sliding on the fixed base plate, at least a portion of its X-axis projection is blocked by the X-axis travel baffle, and at least a portion of its Y-axis projection is blocked by the Y-axis travel baffle.

[0005] Preferably, when the X-axis travel baffle is in the initial position, the X-axis travel between the X-axis travel baffle and one side frame of the fixed base plate along the X direction is zero; When the Y-axis travel baffle is in the initial position, the Y-axis travel between the Y-axis travel baffle and one side frame of the fixed base plate along the Y direction is zero; When the X-axis travel baffle is located on the other side of the fixed base plate along the X direction, the maximum X-axis travel is formed between the X-axis travel baffle and the side of the fixed base plate along the X direction. When the Y-axis travel baffle is located on the other side of the fixed base plate along the Y direction, the maximum Y-axis travel is formed between the Y-axis travel baffle and the side of the fixed base plate along the Y direction.

[0006] Preferably, the fixed base plate has an X-axis limiting baffle contact surface on the other side of the frame along the X direction, which corresponds to the X-axis travel baffle. The fixed base plate has a Y-axis limiting baffle contact surface on the other side of the Y-axis travel baffle.

[0007] Preferably, the X-axis linear motion mechanism includes an X-axis stroke cylinder, and the Y-axis linear motion mechanism includes a Y-axis stroke cylinder.

[0008] Preferably, a sliding friction pair is formed between the top surface of the fixed base plate and the bottom surface of the sliding block; At least one of the top surface of the fixed base plate and the bottom surface of the sliding block is fitted with a low coefficient of friction material, which includes Teflon sheet or Teflon coating.

[0009] Preferably, on the Z-axis projection, both the sliding block and the fixed base plate are rectangular, the X-axis travel baffle extends along the Y-axis direction, and the Y-axis travel baffle extends along the X-axis direction.

[0010] Preferably, the fixed base plate is provided with a centrally symmetrical reference block and a limiting block, and a boss is provided between the sliding block and the moving plate; The reference block is installed at the top of the intersection of one side frame along the X direction and one side frame along the Y direction of the fixed base plate, and the limiting block is installed at the top of the intersection of the other side frame along the X direction and the other side frame along the Y direction of the fixed base plate. The heights of the reference block and the limiting block are both corresponding to the boss, and are configured such that when the sliding block slides on the fixed base plate, at least a portion of its Z-direction projection is blocked by at least one of the reference block and the limiting block. Both the reference block and the limiting block are provided with openings for avoiding the boss.

[0011] Preferably, the reference block is provided with a first opening whose edges extend toward the X-axis and the Y-axis respectively, and the limiting block is provided with a second opening that is symmetrical to the center of the first opening. The boss is a polygonal boss. The shape of the first opening corresponds to the boss. When the boss is inside the first opening, the sliding block is in the initial reference orthogonal position, at which time the X-axis travel and Y-axis travel are both zero. The shape of the second opening corresponds to the boss. When the boss is located inside the second opening, the sliding block is located at the orthogonal limit position farthest from the reference orthogonal position. At this time, both the X-axis travel and the Y-axis travel are at their maximum.

[0012] Preferably, in the height direction, the boss extends through the plane formed by the extension of the reference block and the plane formed by the extension of the limiting block.

[0013] Preferably, the X-axis linear motion mechanism is installed on one side of the fixed base plate along the Y direction, and the Y-axis linear motion mechanism is installed on the other side of the fixed base plate along the X direction; The X-axis travel baffle starts from the drive end of the X-axis linear motion mechanism and extends to the far end along the Y direction. There is a gap extending in the Y direction between the far end of the X-axis travel baffle and the Y-axis travel baffle when it is in the initial position.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model adopts a technical means of setting the sliding block in a sliding plane and limiting it through mutually independent X-axis sliding limiting parts and Y-axis sliding limiting parts. It can accurately control the travel range of the sliding part in the X-axis and Y-axis directions, which solves the problem that the existing sliding mechanism has a fixed travel and cannot flexibly adapt to the needs of different working areas. It realizes precise stopping and movement at any horizontal position within a specific rectangular range. Furthermore, the top moving plate can realize the passive guiding function under heavy load conditions. The overall module is freed from the structure of the guide rail stacking, saving height space.

[0015] 2. This utility model uses a reference block and a limiting block to limit the sliding block in the vertical direction, thereby providing physical protection against detachment of the sliding part. This solves the safety hazard of the moving parts accidentally jumping off or detaching from the working plane in high-speed movement, sudden load change or vibration environment, and greatly enhances the reliability and safety of equipment operation. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the sliding part in this utility model.

[0017] The diagram shows: Detailed Implementation

[0018] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0019] This utility model discloses a planar sliding module with variable stroke function. By setting the sliding block in a sliding plane and limiting it through independent X-axis sliding limiting parts and Y-axis sliding limiting parts, the stroke range of the sliding part in the X-axis and Y-axis directions can be precisely controlled respectively. This solves the problem that the stroke of the existing sliding mechanism is fixed and cannot flexibly adapt to the needs of different working areas. It realizes precise stopping and movement at any horizontal position within a specific rectangular range. Moreover, the top moving plate can realize the passive guiding function under heavy load conditions. The overall module is freed from the structure of the guide rail stacking, saving height space.

[0020] According to the planar sliding module with variable stroke function provided by this utility model, such as Figure 1 , Figure 2As shown, it includes a sliding part 1, an X-axis sliding restriction part 2, a Y-axis sliding restriction part 3, and a fixed base plate 4; the sliding part 1 includes a movable plate 11 and a sliding block 12 installed on the bottom of the movable plate 11. The top of the movable plate 11 is used to place the moving parts. The sliding block 12 is slidably disposed on the fixed base plate 4 and is located within the frame of the fixed base plate 4; the sliding block 12 slides within the frame of the fixed base plate 4. The sliding part 1 is the core of the module's motion. Its upper part is a movable plate 11 for supporting the workpiece, and its lower part is a sliding block 12 that contacts the fixed base plate 4. The movable plate 11 has ample area to stably place heavy objects; its connection with the sliding block 12 ensures overall rigidity. During operation, a heavy object is placed on the movable plate 11, and an external power mechanism, such as a robotic arm, drives the object to move. The static friction between the object and the movable plate 11 causes the plate to move synchronously, while the sliding block 12 slides synchronously within the fixed base 4. In other words, the essence of this invention lies in restricting the movement of an object to different areas within a two-dimensional plane through different strokes.

[0021] The X-axis sliding limiting part 2 includes an X-axis linear motion mechanism and an X-axis travel baffle 22. The X-axis linear motion mechanism is installed on the side of the fixed base plate 4 and is used to drive the X-axis travel baffle 22 to move along the X-axis direction. The X-axis travel baffle 22 serves as the sliding boundary of the sliding block 12 in the X direction and is used to block the sliding of the sliding block 12 in the X direction. By driving the X-axis travel baffle 22 to move to different positions in the X direction, the travel of the sliding block 12 in the X direction can be adjusted. For example, the X-axis linear motion mechanism includes an X-axis travel cylinder 21.

[0022] The Y-axis sliding limiting part 3 includes a Y-axis linear motion mechanism and a Y-axis travel baffle 32. The Y-axis linear motion mechanism is installed on the side of the fixed base plate 4 and is used to drive the Y-axis travel baffle 32 to move along the Y-axis direction. The Y-axis travel baffle 32 serves as the sliding boundary of the sliding block 12 in the Y direction and is used to block the sliding of the sliding block 12 in the Y direction. By driving the Y-axis travel baffle 32 to move to different positions in the Y direction, the Y-axis travel of the sliding block 12 can be adjusted. For example, the Y-axis linear motion mechanism includes a Y-axis travel cylinder 31.

[0023] The X-axis sliding limiting part 2 and the Y-axis sliding limiting part 3 together constitute precise control over the movement range of the sliding part 1 in the horizontal plane. The X-axis sliding limiting part 2 includes an X-axis stroke cylinder 21 and an X-axis stroke cylinder baffle 22. When the X-axis stroke cylinder 21 is ventilated, it drives the X-axis stroke cylinder baffle 22 to move along the X-axis. The position of the baffle 22 directly determines the movable boundary of the sliding block 12 on the X-axis: when the baffle 22 moves to contact the limiting baffle contact surface 41, the maximum stroke in the X-axis direction is reached, thus limiting the movement range of the sliding part 1 on the X-axis. The Y-axis sliding limiting part 3 corresponds completely in structure and working principle. The Y-axis stroke cylinder 31 drives the Y-axis stroke cylinder baffle 32, and the maximum stroke on the Y-axis is limited by the contact between the baffle 32 and the limiting baffle contact surface 42.

[0024] The fixed base plate 4 provides a stable mounting base for the entire module. Its upper part engages with the sliding block 12 of the sliding part 1, ensuring that the sliding part 1 can only move smoothly within the horizontal plane. More specifically, to achieve low-friction, high-precision sliding, the contact surfaces of the fixed base plate 4 and the sliding block 12 are made of a material with a low coefficient of friction or undergo surface treatment. The X-axis stroke cylinder 21 and the Y-axis stroke cylinder 31 are fixed to the base plate 4, thereby securing the overall structure.

[0025] Furthermore, the sliding block 12 is configured such that, when sliding on the fixed base plate 4, at least a portion of its X-axis projection is obscured by the X-axis travel baffle 22, and at least a portion of its Y-axis projection is obscured by the Y-axis travel baffle 32. For example... Figure 2 As shown, the above configuration can be constrained geometrically as follows: the distance between the far end of the X-axis travel baffle 22 and the contact surface 42 of the Y-axis limiting baffle is less than the dimension of the sliding block 12 extending in the Y direction, and the distance between the far end of the Y-axis travel baffle 32 and the contact surface 41 of the X-axis limiting baffle is less than the dimension of the sliding block 12 extending in the X direction, so that no matter what position the sliding block 12 slides to on the fixed base plate 4, its side can be limited by the X-axis travel baffle 22 and the Y-axis travel baffle 32.

[0026] In a preferred embodiment, on the Z-axis projection, both the sliding block 12 and the fixed base plate 4 are rectangular. The X-axis travel baffle 22 extends along the Y-axis direction, and the Y-axis travel baffle 32 extends along the X-axis direction. When the X-axis travel baffle 22 is in its initial position, the X-axis travel between the X-axis travel baffle 22 and one side frame of the fixed base plate 4 along the X-axis is zero. When the Y-axis travel baffle 32 is in its initial position, the Y-axis travel between the Y-axis travel baffle 32 and one side frame of the fixed base plate 4 along the Y-axis is zero. When the X-axis travel baffle 22 is located on the other side frame of the fixed base plate 4 along the X-axis, the maximum X-axis travel is formed between the X-axis travel baffle 22 and one side frame of the fixed base plate 4 along the X-axis. When the Y-axis travel baffle 32 is located on the other side frame of the fixed base plate 4 along the Y-axis, the maximum Y-axis travel is formed between the Y-axis travel baffle 32 and one side frame of the fixed base plate 4 along the Y-axis.

[0027] In a preferred embodiment, the fixed base plate 4 has an X-axis limiting baffle contact surface 41 corresponding to the X-axis travel baffle 22 on the other side of its frame along the X direction; the fixed base plate 4 has a Y-axis limiting baffle contact surface 42 corresponding to the Y-axis travel baffle 32 on the other side of its frame along the Y direction.

[0028] In a preferred embodiment, a sliding friction pair is formed between the top surface of the fixed base plate 4 and the bottom surface of the sliding block 12; at least one of the top surface of the fixed base plate 4 and the bottom surface of the sliding block 12 is fitted with a low coefficient of friction material, the low coefficient of friction material including Teflon sheet or Teflon coating.

[0029] A centrally symmetrical reference block 51 and a limiting block 52 are provided on the fixed base plate 4. A boss 121 is provided between the sliding block 12 and the moving plate 11. In the height direction, the boss 121 passes through the plane formed by the extension of the reference block 51 and the plane formed by the extension of the limiting block 52, so that the sliding block 12 is below the reference block 51 and the limiting block 52, and the moving plate 11 is above the reference block 51 and the limiting block 52. The reference block 51 is installed at the top of the intersection of one side frame along the X direction and one side frame along the Y direction of the fixed base plate 4, and the limiting block 52 is installed at the top of the intersection of the other side frame along the X direction and the other side frame along the Y direction of the fixed base plate 4. The heights of the reference block 51 and the limiting block 52 are corresponding to the boss 121, and are configured such that when the sliding block 12 slides on the fixed base plate 4, at least a portion of its Z-direction projection is blocked by at least one of the reference block 51 and the limiting block 52. By increasing the Z-direction limit, the sliding block 12 will not disengage along the Z-direction when sliding. Both the reference block 51 and the reference block 52 are provided with openings for avoiding the boss 121.

[0030] In a preferred embodiment, the reference block 51 is provided with a first opening whose edges extend toward the X-axis and Y-axis respectively, and the limiting block 52 is provided with a second opening that is symmetrical to the center of the first opening. The boss 121 is a polygonal boss 121. The shape of the first opening corresponds to the boss 121. When the boss 121 is located inside the first opening, the sliding block 12 is located at the initial reference orthogonal position, at which time the X-axis travel and Y-axis travel are both zero. The shape of the second opening corresponds to the boss 121. When the boss 121 is located inside the second opening, the sliding block 12 is located at the orthogonal limit position farthest from the reference orthogonal position, at which time the X-axis travel and Y-axis travel are both maximum.

[0031] The reference block 51 and the limiting block 52 are fixed to the fixed base plate 4, working together to achieve precise orthogonal guidance, anti-rotation, and physical anti-detachment of the sliding part 1. When the hexagonal boss 121 on the sliding block 12 contacts the reference block 51, the sliding part 1 is in the initial reference orthogonal position. At this time, the X-axis stroke cylinder baffle 22 and the Y-axis stroke cylinder baffle 32 work together to limit the movement of the sliding block 12 in the X and Y axes from this position. When the hexagonal boss 121 moves to contact the limiting block 52, the orthogonal limit position furthest from the reference position is defined. More specifically, through the vertical limiting of these two sets of blocks, they can effectively constrain the lifting or detachment tendency of the sliding block 12 and its hexagonal boss 121 during the sliding process, ensuring that the sliding part 1 always slides smoothly on the plane of the fixed base plate 4 without jumping or jamming, while eliminating possible rotation during the movement, ensuring that it always performs precise horizontal orthogonal translation throughout the entire stroke.

[0032] In a preferred example, such as Figure 2 As shown, the X-axis linear motion mechanism is installed on one side of the fixed base plate 4 along the Y direction, and the Y-axis linear motion mechanism is installed on the other side of the fixed base plate 4 along the X direction. The X-axis travel baffle 22 extends from the drive end of the X-axis linear motion mechanism to the far end along the Y direction. There is a gap extending in the Y direction between the far end of the X-axis travel baffle 22 and the Y-axis travel baffle 32 when it is in the initial position, so that the X-axis travel baffle 22 and the Y-axis travel baffle 32 will not interfere with each other at any position.

[0033] This invention significantly reduces sliding friction resistance by using a fixed base plate 4 made of or treated with a low-friction coefficient material to mate with the sliding block 12. This solves the problems of high friction coefficient, easy stick-slip phenomenon, unstable movement, large starting force, and difficulty in ensuring positioning accuracy caused by traditional metal contact surfaces, providing the necessary conditions for achieving smooth and high-precision horizontal movement.

[0034] This invention employs a fixed base plate 4 made of or treated with a low coefficient of friction material, with the mating surfaces of the sliding block 12 located within the structure. When an object needs to slide and rub against a surface for translation or rotation, it effectively ensures a large contact area while avoiding direct friction between the object and the surface. This simultaneously protects the object's surface and achieves the same low-friction effect without being restricted by the object's surface.

[0035] This invention employs a structure where a reference block 51 and a limiting block 52 vertically limit the sliding block 12, thus providing physical protection against detachment for the sliding part 1. This solves the safety hazard of the moving parts accidentally jumping off or detaching from the working plane under conditions of high-speed movement, sudden load changes, or vibration, greatly enhancing the reliability and safety of equipment operation.

[0036] This invention employs independent X-axis sliding limiting parts 2 and Y-axis sliding limiting parts 3, thereby enabling precise control of the movement range of the sliding part 1 in the X-axis and Y-axis directions. This solves the problem that existing sliding mechanisms have fixed strokes and cannot flexibly adapt to the needs of different working areas, achieving precise stopping and movement at any horizontal position within a specific rectangular range.

[0037] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0038] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A planar sliding module with variable stroke function, characterized in that, It includes a sliding part (1), an X-axis sliding restriction part (2), a Y-axis sliding restriction part (3), and a fixed base plate (4); The sliding part (1) includes a movable plate (11) and a sliding block (12) installed at the bottom of the movable plate (11). The top of the movable plate (11) is used to place the moving parts. The sliding block (12) is slidably disposed on the fixed base plate (4) and located within the frame of the fixed base plate (4). The X-axis sliding restriction part (2) includes an X-axis linear motion mechanism and an X-axis travel baffle (22). The X-axis linear motion mechanism is installed on the side of the fixed base plate (4) and is used to drive the X-axis travel baffle (22) to move along the X-axis direction. The X-axis travel baffle (22) serves as the sliding boundary of the sliding block (12) in the X direction and is used to block the sliding block (12) in the X direction. The Y-axis sliding limit part (3) includes a Y-axis linear motion mechanism and a Y-axis travel baffle (32). The Y-axis linear motion mechanism is installed on the side of the fixed base plate (4) and is used to drive the Y-axis travel baffle (32) to move along the Y-axis direction. The Y-axis travel baffle (32) serves as the sliding boundary of the sliding block (12) in the Y direction and is used to block the sliding block (12) in the Y direction. The sliding block (12) is configured such that when it slides on the fixed base plate (4), at least part of its X-axis projection is blocked by the X-axis travel baffle (22), and at least part of its Y-axis projection is blocked by the Y-axis travel baffle (32).

2. The planar sliding module with variable stroke function according to claim 1, characterized in that, When the X-axis travel baffle (22) is in the initial position, the X-axis travel between the X-axis travel baffle (22) and one side frame of the fixed base plate (4) along the X direction is zero; When the Y-axis travel baffle (32) is in the initial position, the Y-axis travel between the Y-axis travel baffle (32) and one side frame of the fixed base plate (4) along the Y direction is zero; When the X-axis travel baffle (22) is located on the other side of the fixed base plate (4) along the X direction, the maximum X-axis travel is formed between the X-axis travel baffle (22) and the side of the fixed base plate (4) along the X direction; When the Y-axis travel baffle (32) is located on the other side of the fixed base plate (4) along the Y direction, the maximum Y-axis travel is formed between the Y-axis travel baffle (32) and the side of the fixed base plate (4) along the Y direction.

3. The planar sliding module with variable stroke function according to claim 2, characterized in that, The fixed base plate (4) is provided with an X-axis limiting baffle contact surface (41) on the other side of the X-axis frame along the X-direction, which corresponds to the X-axis travel baffle (22). The fixed base plate (4) has a Y-axis limiting baffle contact surface (42) on the other side frame along the Y direction, which corresponds to the Y-axis travel baffle (32).

4. The planar sliding module with variable stroke function according to claim 1, characterized in that, The X-axis linear motion mechanism includes an X-axis stroke cylinder (21), and the Y-axis linear motion mechanism includes a Y-axis stroke cylinder (31).

5. The planar sliding module with variable stroke function according to claim 1, characterized in that, A sliding friction pair is formed between the top surface of the fixed base plate (4) and the bottom surface of the sliding block (12); At least one of the top surface of the fixed base plate (4) and the bottom surface of the sliding block (12) is fitted with a low friction coefficient material, the low friction coefficient material including Teflon sheet or Teflon coating.

6. The planar sliding module with variable stroke function according to claim 1, characterized in that, On the Z-axis projection, the sliding block (12) and the fixed base plate (4) are both rectangular, the X-axis travel baffle (22) extends along the Y-axis direction, and the Y-axis travel baffle (32) extends along the X-axis direction.

7. The planar sliding module with variable stroke function according to claim 2, characterized in that, The fixed base plate (4) is provided with a centrally symmetrical reference block (51) and a limiting block (52), and a boss (121) is provided between the sliding block (12) and the moving plate (11). The reference block (51) is installed at the top of the intersection of one side frame along the X direction and one side frame along the Y direction of the fixed base plate (4), and the limiting block (52) is installed at the top of the intersection of the other side frame along the X direction and the other side frame along the Y direction of the fixed base plate (4). The heights of the reference block (51) and the limiting block (52) are both corresponding to the boss (121), and are configured such that when the sliding block (12) slides on the fixed base plate (4), at least a portion of its Z-direction projection is blocked by at least one of the reference block (51) and the limiting block (52). Both the reference block (51) and the limiting block (52) are provided with openings for avoiding the boss (121).

8. The planar sliding module with variable stroke function according to claim 7, characterized in that, The reference block (51) is provided with a first opening whose edges extend toward the X-axis and Y-axis respectively, and the limiting block (52) is provided with a second opening that is symmetrical to the center of the first opening. The boss (121) is a polygonal boss (121). The shape of the first opening corresponds to the boss (121). When the boss (121) is located inside the first opening, the sliding block (12) is located at the initial reference orthogonal position, at which time the X-axis travel and Y-axis travel are both zero. The shape of the second opening corresponds to the boss (121). When the boss (121) is located inside the second opening, the sliding block (12) is located at the orthogonal limit position furthest from the reference orthogonal position. At this time, the X-axis travel and Y-axis travel are both at their maximum.

9. The planar sliding module with variable stroke function according to claim 7, characterized in that, In the height direction, the boss (121) passes through the plane formed by the extension of the reference block (51) and the plane formed by the extension of the limiting block (52).

10. The planar sliding module with variable stroke function according to claim 2, characterized in that, The X-axis linear motion mechanism is installed on one side of the fixed base plate (4) along the Y direction, and the Y-axis linear motion mechanism is installed on the other side of the fixed base plate (4) along the X direction. The X-axis travel baffle (22) extends from the drive end of the X-axis linear motion mechanism to the far end in the Y direction, and there is a gap extending in the Y direction between the far end of the X-axis travel baffle (22) and the Y-axis travel baffle (32) when it is in the initial position.

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