Linear displacement device
Patent Information
- Application Number
- CN202522599763.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-08
AI Technical Summary
[0003]然而，在现有技术中，大多数手动粗微调精密位移装置在实际使用中难以同时满足快速定位与精确定位的要求，部分产品虽能实现粗微调结合，但其机械结构复杂，装配难度大，导致制造成本上升，维护不便，影响了其在广泛工业和科研场景中的普及与应用
本实用新型提供的直线位移装置包括底座、滑台、微调螺杆和离合组件，滑台沿第一方向滑动设置于底座上，微调螺杆的长度方向沿第一方向设置并可旋转地安装于底座上。离合组件固定于滑台上，离合组件具有可切换的第一工作状态和第二工作状态，当离合组件处于第一工作状态时，离合组件与微调螺杆相接触螺合，当离合组件切换至第二工作状态时，离合组件与微调螺杆脱离接触。在实际操作中，可先将离合组件切换至第二工作状态，此时操作人员可将离合组件作为手柄直接推拉滑台，使滑台沿第一方向进行大范围的快速移动，以快速移动至目标位置附近，从而实现对滑台位置的手动粗调；然后可将离合组件切换至第一工作状态，此时操作人员可旋拧微调螺杆，利用离合组件与微调螺杆之间的螺合传动，使离合组件带动滑台沿第一方向进行小范围、高精度的位置调节，从而实现对滑台位置的手动微调。
Smart Images
Figure CN224914694U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of precision machinery technology, and in particular to a linear displacement device. Background Technology
[0002] In many precision machining, inspection and testing processes, manual linear displacement devices are required. In order to achieve both fast and accurate manual displacement control, manual linear displacement devices usually adopt a combination of coarse and fine adjustment. Coarse adjustment enables large-range and rapid position adjustment, while fine adjustment enables small-range and high-precision fine adjustment.
[0003] However, in existing technologies, most manual coarse and fine adjustment precision displacement devices cannot simultaneously meet the requirements of rapid positioning and precise positioning in practical use. Although some products can achieve a combination of coarse and fine adjustment, their mechanical structure is complex and assembly is difficult, leading to increased manufacturing costs and inconvenient maintenance, which affects their popularization and application in a wide range of industrial and scientific research scenarios. Utility Model Content
[0004] The purpose of this invention is to provide a linear displacement device that enables manual coarse and fine adjustments, and has a simple structure and low cost.
[0005] This utility model provides a linear displacement device, including a base, a slide, a fine-tuning screw, and a clutch assembly; The slide table is slidably disposed on the base along the first direction, the length direction of the fine-tuning screw is disposed along the first direction, and the fine-tuning screw is rotatably mounted on the base; The clutch assembly is fixed on the slide table. The clutch assembly has a first working state in which it is in contact with the fine-tuning screw and a second working state in which it is out of contact with the fine-tuning screw.
[0006] Furthermore, the clutch assembly includes a base and a clutch lever; The base is fixed to one side of the slide table, one end of the clutch handle is movably connected to the base, and the clutch handle extends to one side of the fine-tuning screw in the radial direction. When the clutch assembly switches to the first working state, the clutch handle moves to contact and engage with the fine-tuning screw; When the clutch assembly switches to the second working state, the clutch lever moves until it disengages from the fine-tuning screw.
[0007] Furthermore, the clutch handle is provided with a groove with an opening facing the fine-tuning screw, and the inner wall of the groove is provided with an internal thread connection portion adapted to the fine-tuning screw; When the clutch assembly is in the first working state, the fine-tuning screw is located in the groove and engaged with the internal thread connection part.
[0008] Furthermore, the clutch assembly includes an elastic element; The clutch lever is connected to the base through the elastic element. The clutch lever can press against the fine-tuning screw under the action of the elastic element, so that the clutch assembly is kept in the first working state.
[0009] Furthermore, the elastic element is a torsion spring; The base includes two sides arranged opposite each other along the first direction, and a connecting rod is provided between the two sides. The torsion spring is sleeved on the connecting rod. The torsion spring has a first free end and a second free end. The first free end is connected to the base, and the second free end is connected to the clutch handle.
[0010] Furthermore, the second free end is U-shaped; The clutch lever has a U-shaped groove at one end facing the torsion spring, and the second free end is engaged in the U-shaped groove.
[0011] Furthermore, the clutch lever is detachably connected to a limiting block, which covers the opening of the U-shaped groove.
[0012] Furthermore, the limiting block is positioned between the two sides of the base along the first direction.
[0013] Furthermore, the slide is slidably mounted on the base via a cross roller guide rail arranged along the first direction.
[0014] Furthermore, the fine-tuning screw includes a screw and a fine-adjustment knob, the screw is rotatably mounted, and the fine-adjustment knob is connected to one end of the screw.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The linear displacement device provided by this utility model includes a base, a slide table, a fine-tuning screw, and a clutch assembly. The slide table is slidably disposed on the base along a first direction, and the fine-tuning screw is disposed along the first direction and rotatably mounted on the base. The clutch assembly is fixed on the slide table and has a switchable first working state and a second working state. When the clutch assembly is in the first working state, the clutch assembly is in contact with and screwed onto the fine-tuning screw. When the clutch assembly switches to the second working state, the clutch assembly disengages from the fine-tuning screw. In actual operation, the clutch assembly can first be switched to the second working state. At this time, the operator can use the clutch assembly as a handle to push and pull the slide table directly, so that the slide table can move rapidly along the first direction to quickly move to the vicinity of the target position, thereby realizing manual coarse adjustment of the slide table position. Then, the clutch assembly can be switched to the first working state. At this time, the operator can turn the fine adjustment screw. Utilizing the screw drive between the clutch assembly and the fine adjustment screw, the clutch assembly can drive the slide table to perform small-range, high-precision position adjustment along the first direction, thereby realizing manual fine adjustment of the slide table position.
[0016] Therefore, the linear displacement device of this application can not only manually coarsely adjust the position of the slide table and improve the efficiency of coarse adjustment to a certain extent, but also manually finely adjust the position of the slide table and ensure the accuracy of fine adjustment; at the same time, the overall structure of the device is simple, which can reduce the processing and assembly costs to a certain extent. Attached Figure Description
[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the linear displacement device provided in this embodiment of the utility model; Figure 2 A schematic diagram of the clutch assembly structure of the linear displacement device provided in this embodiment of the utility model.
[0019] Figure label: 1-Base, 2-Slide table, 3-Fine adjustment screw, 31-Fine adjustment knob, 4-Clutch assembly, 41-Base, 42-Clutch handle, 43-Groove, 44-Elastic element, 45-Limit block; a - First direction, b - Second direction. Detailed Implementation
[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0021] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.
[0022] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] 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.
[0025] The following reference Figure 1 and Figure 2 This application describes a linear displacement device according to some embodiments.
[0026] This application provides a linear displacement device, such as... Figure 1As shown, the linear displacement device includes a base 1, a slide 2, a fine-tuning screw 3, and a clutch assembly 4. The base 1 has a first direction a and a second direction b perpendicular to each other. The slide 2 is slidably mounted on the base 1 along the first direction a. The fine-tuning screw 3 is rotatably mounted on the base 1, with its length direction along the first direction a, and the fine-tuning screws 3 are spaced apart on one side of the slide 2 along the second direction b. The clutch assembly 4 is fixed to the slide 2, specifically to the side of the slide 2 facing the fine-tuning screw 3. The clutch assembly 4 has a switchable first working state and a second working state. When the clutch assembly 4 is in the first working state, it is in contact with and screwed onto the fine-tuning screw 3. When the clutch assembly 4 is switched to the second working state, it disengages from the fine-tuning screw 3.
[0027] In actual operation, the clutch assembly 4 can be switched to the second working state first. At this time, the operator can use the clutch assembly 4 as a handle to push and pull the slide table 2 directly, so that the slide table 2 can move rapidly along the first direction a to quickly move to the vicinity of the target position, thereby realizing the manual coarse adjustment of the position of the slide table 2. Then, the clutch assembly 4 can be switched to the first working state. At this time, the operator can turn the fine adjustment screw 3. Using the screw drive between the clutch assembly 4 and the fine adjustment screw 3, the clutch assembly 4 can drive the slide table 2 to make a small-range, high-precision position adjustment along the first direction a, thereby realizing the manual fine adjustment of the position of the slide table 2.
[0028] Therefore, the linear displacement device of this application can not only manually coarsely adjust the position of the slide table 2 and improve the efficiency of coarse adjustment to a certain extent, but also manually finely adjust the position of the slide table 2 and ensure the accuracy of fine adjustment; at the same time, the overall structure of the device is simple and can reduce the processing and assembly costs to a certain extent.
[0029] In one embodiment of this application, preferably, as shown below, Figure 2 As shown, the clutch assembly 4 includes a base 41 and a clutch handle 42. The base 41 is fixed to the side of the slide 2 facing the fine-tuning screw 3. One end of the clutch handle 42 is movably connected to the base 41, and the clutch handle 42 extends to the radial side of the fine-tuning screw 3. The clutch handle 42 can move toward the fine-tuning screw 3 to press against and engage with the fine-tuning screw 3, at which time the clutch assembly 4 is in a first working state. The clutch assembly 4 can also move away from the fine-tuning screw 3 to disengage from the fine-tuning screw 3, and the fine-tuning screw 3 does not affect the movement of the clutch assembly 4 and the slide 2 along the first direction a, at which time the clutch assembly 4 is switched to a second working state.
[0030] In this embodiment, preferably, as follows: Figure 2As shown, the clutch handle 42 has a groove 43, the opening of which faces the fine-tuning screw 3. The inner wall of the groove 43 has an internal threaded connection, which is adapted to the fine-tuning screw 3. When the clutch handle 42 moves toward the fine-tuning screw 3 to abut against it, switching the clutch assembly 4 to the first working state, the fine-tuning screw 3 extends into the groove 43 and engages with the internal threaded connection. At this time, turning the fine-tuning screw 3 allows the clutch handle 42 to move along the fine-tuning screw 3, thereby moving the slide 2 and achieving fine-tuning of the position of the slide 2.
[0031] In this embodiment, preferably, as follows: Figure 2 As shown, the clutch assembly 4 also includes an elastic element 44. The clutch handle 42 is connected to the base 41 through the elastic element 44, and the elastic force of the elastic element 44 causes the clutch handle 42 to tend to move towards the fine-tuning screw 3. Thus, when no external force is applied to the clutch handle 42, the clutch handle 42 can press against the fine-tuning screw 3 under the action of the elastic element 44 to maintain the engagement state with the fine-tuning screw 3, so that the clutch assembly 4 remains in the first working state. When it is necessary to switch the clutch assembly 4 to the second working state, simply turn the clutch handle 42 to overcome the elastic force of the elastic element 44 and move away from the fine-tuning screw 3.
[0032] In this embodiment, preferably, the elastic element 44 is a torsion spring, the base 41 includes two sides arranged opposite to each other along the first direction a, and a connecting rod extending along the first direction a is installed between the two sides. The torsion spring is sleeved on the connecting rod. The torsion spring has a first free end and a second free end. The torsion spring is connected to the base 41 through the first free end and to the clutch handle 42 through the second free end, so that the torsion spring can provide elastic force to the clutch handle 42, so that the clutch handle 42 can maintain a state of contact and engagement with the fine-tuning screw 3.
[0033] By selecting a suitable torsion spring and the length of the clutch lever 42, the clutch lever 42 can be stably pressed against the fine-tuning screw 3 to maintain the engagement state of the two, and it is also convenient for the user to turn the clutch lever 42 to switch the clutch assembly 4 to the second working state.
[0034] In this embodiment, preferably, as follows: Figure 2 As shown, the second free end of the torsion spring is U-shaped. The side surface of the clutch handle 42, which is used to connect one end of the torsion spring, is provided with a U-shaped groove. The second free end of the torsion spring is fitted into the U-shaped groove. A limiting block 45 is detachably connected to the clutch handle 42. The limiting block 45 covers the opening of the U-shaped groove, thereby stably connecting the second free end of the torsion spring to the clutch handle 42.
[0035] In this embodiment, preferably, the limiting block 45 is positioned between the two sides of the base 41 along the first direction a, thereby limiting the relative position of the base 41 and the clutch handle 42 in the first direction a, so as to restrict the movement of the clutch handle 42 on the base 41 along the first direction a.
[0036] In one embodiment of this application, preferably, the slide table 2 is slidably mounted on the base 1 via a cross roller guide rail arranged along the first direction a, so that when the position of the slide table 2 is coarsely adjusted, the slide table 2 can move quickly over a wide range to improve the efficiency of coarse adjustment.
[0037] In one embodiment of this application, preferably, the fine-tuning screw 3 includes a screw and a micro-adjustment knob 31. The screw is rotatably mounted on the base 1, and the micro-adjustment knob 31 is connected to one end of the screw so that the screw can be rotated by turning the micro-adjustment knob 31. The fine-tuning accuracy depends on the screw pitch and the micro-adjustment knob 31's subdivision. Therefore, by selecting screws with different pitches and micro-adjustment knob 31 subdivisions, the fine-tuning accuracy can be adjusted. For example, if an M6 screw with a pitch of 0.5 mm is selected and the micro-adjustment knob 31 is subdivided into 360 degrees, the displacement of each subdivision is 1.39 μm.
[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A linear displacement device, characterized in that, Includes base, slide, fine-tuning screw and clutch assembly; The slide table is slidably disposed on the base along the first direction, the length direction of the fine-tuning screw is disposed along the first direction, and the fine-tuning screw is rotatably mounted on the base; The clutch assembly is fixed on the slide table. The clutch assembly has a first working state in which it is in contact with the fine-tuning screw and a second working state in which it is out of contact with the fine-tuning screw.
2. The linear displacement device according to claim 1, characterized in that, The clutch assembly includes a base and a clutch handle; The base is fixed to one side of the slide table, one end of the clutch handle is movably connected to the base, and the clutch handle extends to one side of the fine-tuning screw in the radial direction. When the clutch assembly switches to the first working state, the clutch handle moves to contact and engage with the fine-tuning screw; When the clutch assembly switches to the second working state, the clutch lever moves until it disengages from the fine-tuning screw.
3. The linear displacement device according to claim 2, characterized in that, The clutch handle has a groove with an opening facing the fine-tuning screw, and the inner wall of the groove has an internal thread connection part adapted to the fine-tuning screw; When the clutch assembly is in the first working state, the fine-tuning screw is located in the groove and engaged with the internal thread connection part.
4. The linear displacement device according to claim 2, characterized in that, The clutch assembly includes an elastic element; The clutch lever is connected to the base through the elastic element. The clutch lever can press against the fine-tuning screw under the action of the elastic element, so that the clutch assembly is kept in the first working state.
5. The linear displacement device according to claim 4, characterized in that, The elastic element is a torsion spring; The base includes two sides arranged opposite each other along the first direction, and a connecting rod is provided between the two sides. The torsion spring is sleeved on the connecting rod. The torsion spring has a first free end and a second free end. The first free end is connected to the base, and the second free end is connected to the clutch handle.
6. The linear displacement device according to claim 5, characterized in that, The second free end is U-shaped; The clutch lever has a U-shaped groove at one end facing the torsion spring, and the second free end is engaged in the U-shaped groove.
7. The linear displacement device according to claim 6, characterized in that, The clutch lever is detachably connected to a limiting block, which covers the opening of the U-shaped groove.
8. The linear displacement device according to claim 7, characterized in that, The limiting block is positioned between the two sides of the base along the first direction.
9. The linear displacement device according to claim 1, characterized in that, The slide is slidably mounted on the base via cross roller guides arranged along the first direction.
10. The linear displacement device according to claim 1, characterized in that, The fine-tuning screw includes a screw and a fine-adjustment knob. The screw is rotatably mounted, and the fine-adjustment knob is connected to one end of the screw.