Slide block angle compensation device and method
By designing a slide angle compensation device for linear motion guide devices, the problem of angle error or distortion of track and slide angle is solved by using the cooperation of components such as curved bodies and bolts, and higher production accuracy and device durability are achieved.
Patent Information
- Application Number
- CN202410333770.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2024-03-15
- Filing Date
- 2024-03-22
- Publication Date
- 2025-06-24
AI Technical Summary
In linear motion guide devices, the angle error or distortion of the track and slider can lead to process errors, vibration, wear and other problems, and may even cause accidents or damage.
A slider angle compensation device is designed, including a bulging curved surface in which the first curved body cooperates with the outer surface of the slider, a recessed curved surface in which the second curved body cooperates with the moving frame, and a bolt, a first washer and a second washer. Through the coordinating and rotation of these components, the angle error of the slider can be compensated.
The device can accurately and easily compensate for the angle error or distortion of the slider, improve the accuracy and stability of the production process, and extend the service life of the linear motion device.
Smart Images
Figure CN120194081A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an apparatus for compensating the angle of a slider, and more particularly to an apparatus and a method for compensating the angle error or twist of a slider used in a linear motion device such as a linear motion guide (LM Guide). Background Art
[0002] A linear motion device such as a linear motion guide generally includes a rail for linear motion, a slider / block moving along the rail, and balls for reducing the friction between the rail and the slider / block, etc.
[0003] Since the linear motion guide has less friction and wear heat, it is suitable for high-speed reciprocating motion and can withstand large loads, so it is widely used in many fields such as automatic doors, electric vehicles, semiconductor equipment, industrial robots, and automated production lines.
[0004] In particular, when a linear motion guide is used in a field requiring high precision such as semiconductor equipment, industrial robots, and automated production lines, the angle error or twist of the rail and the slider / block will not only cause process errors, but also cause vibrations or wear, etc. In the worst case, it will cause accidents or breakages, etc. Therefore, a device that can easily and conveniently compensate for the angle error or twist of the rail and the slider / block is needed not only when setting up the linear motion guide but also during use. Summary of the Invention
[0005] Problems to be Solved
[0006] The present invention has been made in view of the above problems, and its purpose is to provide a slider angle compensation device and method that can easily and accurately compensate for the angle error or twist of a slider.
[0007] The technical problems to be solved by the present invention are not limited to the above-mentioned technical problems, and those of ordinary skill in the art will clearly understand other technical problems not mentioned from the following description.
[0008] Solutions to the Problems
[0009] The slider angle compensation device according to the present invention for achieving the above object includes: a first curved body that mates with the outer surface of a slider moving along an orbit and has a bulging curved surface; a second curved body that mates with one surface of a moving frame that moves with the movement of the above slider and has a concave curved surface corresponding to the curved surface of the above first curved body; one or more bolts that are connected to the above first curved body to overlap the above first and second curved bodies; one or more first washers that have a lower part in contact with the outer surface of the above moving frame and an upper part formed with a concave spherical surface; and one or more second washers that are located between the head of the above bolt and the above first washer and have a lower part formed with a bulging spherical surface corresponding to the spherical surface of the above first washer and an upper part in contact with the bottom surface of the head of the above bolt.
[0010] The above second curved body is configured to rotate based on the track in the length direction to compensate for the angle error of the above slider, and the above second curved body rotates a certain angle based on the track in the length direction according to the angle error of the above slider.
[0011] The above one or more bolts are configured to be perpendicular to the outer surface of the above slider and tilt according to the angle error of the above slider. The above moving frame and the above second curved body each include through holes larger than the diameter of the above one or more bolts so that the above one or more bolts tilt according to the angle error of the above slider.
[0012] In addition, the above one or more bolts are configured to penetrate the above moving frame and the above second curved body and be threadedly connected to the above first curved body, and the above one or more bolts are composed of two or more bolts arranged in the horizontal direction.
[0013] The above second washer is configured to rotate on the above first washer according to the angle error of the above slider and the tilt degree of the above bolt, and the above second washer rotates on the spherical surface of the above first washer by the pressure of the head of the above bolt. In addition, the inner diameter of the above second washer is smaller than the inner diameter of the above first washer.
[0014] The slider angle compensation method using the slider angle compensation device of the present invention includes: a step of sensing the angle error / twist of the above slider to generate a value for the angle error / twist; a step of setting the rotation angles of the above moving frame and the above second curved body based on the generated value to compensate for the angle error / twist of the above slider; a step of rotating the above moving frame and the above second curved body according to the set rotation angles; and a step of connecting the above bolt to the above first curved body after penetrating the above moving frame and the above second curved body.
[0015] In the step of connecting the above-mentioned bolt to the above-mentioned first curved surface body, the above-mentioned bolt is perpendicular to the surface of the above-mentioned slider and is inclined along with the angular error / twist of the above-mentioned slider.
[0016] In addition, in the step of connecting the above-mentioned bolt to the above-mentioned first curved surface body, the above-mentioned second washer is pressurized by the above-mentioned bolt to rotate the above-mentioned second washer on the spherical surface of the above-mentioned first washer.
[0017] Advantages of the Invention
[0018] The slider angle compensation device according to the present invention can easily and accurately compensate for the angular error or twist of the slider, thereby providing the accuracy and stability of the production process and improving the durability of the linear motion device. Brief Description of the Drawings
[0019] Figure 1 FIG. is an example showing a product 10 including a slider angle compensation device 100 according to the present invention.
[0020] Figure 2 and Figure 3 is a detailed illustration of Figure 1 the slider angle compensation device 100.
[0021] Figure 4 is Figure 1 a sectional view of the slider angle compensation device 100.
[0022] Figure 5 is a detailed illustration of the bolt 160, the first washer 170, and the second washer 180 of the present invention.
[0023] Figure 6 is a diagram showing a slider angle correction method using the slider angle compensation device 100 according to the present invention.
[0024] Reference Signs
[0025] 110 - rail, 130 - first curved surface body, 140 - second curved surface body, 150 - moving frame, 160 - bolt, 170 - first washer, 180 - second washer. Detailed Description of the Invention
[0026] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings. For the same or similar components, the same reference numerals are assigned regardless of the reference signs in the drawings, and repeated descriptions thereof are omitted. The suffixes "module" and "section" of the components used in the following description are given or used in combination only for the simplicity of preparing the specification, and do not have distinct meanings or functions by themselves. In addition, in the process of describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted when it is determined that they may obscure the gist of the embodiments disclosed in this specification. In addition, the drawings are only used to facilitate the understanding of the embodiments disclosed in this specification, and the technical ideas disclosed in this specification are not limited to the drawings, and should be understood to cover all modifications, equivalents, or alternatives included in the spirit and scope of the present invention.
[0027] Figure 1 FIG. is an example showing a product 10 including a slider angle compensation device 100 according to the present invention. Figure 2 and Figure 3 FIG. is a detailed illustration of Figure 1 the slider angle compensation device 100. Figure 4 FIG. is Figure 1 a cross-sectional view of the slider angle compensation device 100 of Figure 5 FIG. is a detailed illustration of the bolt 160, the first washer 170, and the second washer 180 of the present invention.
[0028] The slider angle compensation device 100 according to the present invention can be mainly applied to products 10 that require linear reciprocating motion. As Figure 1 shown, the slider angle compensation device 100 of the present invention can be fitted on one or more base frames 11.
[0029] The base frame 11 can be formed in various shapes and sizes, and one or more rails 110 are fitted on the base frame 11 and can also be formed in various shapes and sizes. In addition, the slider 120 is configured to cooperate with the rail 110 and move along the rail 110. A bearing (not shown) for reducing friction may be included between the rail 110 and the slider 120, and various types such as roller types and ball types can be applied to the bearing.
[0030] When fitting the rail 110 on the base frame 11 or fitting the slider 120 on the rail 110, due to various reasons, angular errors or distortions may occur in the rail 110 or the slider 120. In addition, during the use of the rail 110 and the slider 120, they may deform. In the present invention, the "angular error / distortion of the slider 120" not only means the abnormal state of the slider 120, but also means the abnormal states of the respective components that cooperate with the slider 120, such as the rail 110 or a bearing (not shown).
[0031] As Figure 2 and Figure 3 shown, as the main components of the slider angle compensation device 100 according to the present invention, it includes a first curved surface body 130, a second curved surface body 140, one or more bolts 160, one or more first washers 170, and one or more second washers 180. Other components constituting the slider angle compensation device 100 may be further included, but the description will be centered on the main components of the present invention.
[0032] As Figure 4 shown, one surface of the first curved surface body 130 is fitted and fixed to the outer surface of the slider 120, and the other surface of the first curved surface body 130 is configured as a bulging curved surface 132. In addition, the first curved surface body 130 includes one or more insertion ports 131 for inserting and connecting the bolts 160, and thread teeth are formed inside the insertion ports 131. Here, the insertion ports 131 have a diameter that allows the bolts 160 to be screwed and fixed.
[0033] One surface of the second curved surface body 140 is fitted to a part of the surface of the moving frame 150 that moves as the slider 120 moves, and the other surface of the second curved surface body 140 is configured as a concave curved surface 142 corresponding to the curved surface 132 of the first curved surface body 130. The curved surface 132 of the first curved surface body 130 and the curved surface 142 of the second curved surface body 140 are formed as curved surfaces such as the outer peripheral surface of a cylinder.
[0034] The second curved surface body 140 is configured to rotate with respect to the lengthwise rail 110 in a state of being in contact with the curved surface 132 of the first curved surface body 130 in order to compensate for the angular error / distortion of the slider 120. That is, the second curved surface body 140 is configured to rotate by a certain angle with respect to the lengthwise rail 110 according to the angular error / distortion of the slider 120. In order to enable the second curved surface body 140 to rotate smoothly and stably, it is preferable that the curved surface 132 of the first curved surface body 130 and the curved surface 142 of the second curved surface body 140 are formed to have the same curvature.
[0035] In addition, the second curved surface body 140 includes one or more through holes 141 through which the bolts 160 can pass.
[0036] In the unconnected state, each bolt 160 passes through the moving frame 150 and the second curved surface body 140, and is threadedly connected in the insertion port 131 of the first curved surface body 130 so that the first and second curved surface bodies 130, 140 overlap. For this purpose, each bolt 160 includes a thread. Each bolt 160 is threadedly connected to the first curved surface body 130, so that each bolt 160 is perpendicular to the surface of the slider 120. Thus, each bolt 160 tilts with the angular error / twist of the slider 120.
[0037] Preferably, the diameters of the through holes 151 of the moving frame 150 and the through holes 141 of the second curved surface body are formed to be larger than the diameter of the bolt 160, so that the bolt 160 can tilt with the angular error / twist of the slider 120. The diameters of the through holes 151 of the moving frame 150 and the through holes 141 of the second curved surface body can not only limit the tilting range of the bolt 160, but also limit the rotation range (rotation angle) of the moving frame 150 and the second curved surface body 140. In other words, the diameters of the through holes 151 of the moving frame 150 and the through holes 141 of the second curved surface body can define the allowable range and the compensation range for the angular error / twist of the slider 120. Therefore, it is preferable to determine the diameters of the through holes 151 of the moving frame 150 and the through holes 141 of the second curved surface body in consideration of this allowable range or compensation range.
[0038] When a plurality of bolts 160 are connected to the first curved surface body 130, for firm fixation, it is preferable to arrange two or more bolts 160 in a row at a certain distance from each other in the horizontal direction (left - right direction). In addition, according to the length of the slider 120, a plurality of bolts 160 can be arranged at a certain distance from each other in the vertical direction (up - down direction).
[0039] According to the number and insertion positions of the bolts 160, not only can the number and positions of the insertion ports 131 of the first curved surface body 130 be determined to be different from each other, but also the number and positions of the through holes 141, 151 of the second curved surface body 140 and the moving frame 150 can be determined to be different from each other.
[0040] As Figure 5 shown, the first washer 170 is formed in a hollow ring shape, and has a lower part that contacts the surface of the moving frame 150 on the through hole 151 and an upper part with a recessed spherical surface formed.
[0041] The second washer 180 is located between the head 161 of the bolt 160 and the first washer 170, and has a lower part with a bulging spherical surface corresponding to the spherical surface of the first washer 170 and an upper part that contacts the bottom surface of the head 161 of the bolt 160.
[0042] The second washer 180 is configured to rotate on the first washer 170 according to the angular error / twist of the slider 120 and the inclination of the bolt 160, and the second washer 180 rotates on the spherical surface of the first washer 170 by the pressure of the head 161 of the bolt 160.
[0043] In order to enable the second washer 180 to rotate smoothly and stably, it is preferable that the inner diameter of the second washer 180 is formed to be smaller than the inner diameter of the first washer 170, and the spherical surfaces of the first washer 170 and the second washer 180 are formed to have the same curvature.
[0044] As another embodiment, the second washer 180 can also be removed and the lower part of the head 161 of the bolt 160 can be formed into a spherical surface. However, in terms of manufacturing cost, the combination of the bolt 160 and the first and second washers 170, 180 is relatively cheaper than the combination of a spherical bolt and the first washer 170. In addition, the combination of the bolt 160 and the first and second washers 170, 180 can achieve smoother rotation, stronger connection, and better durability than the combination of a spherical bolt and the first washer 170.
[0045] The slider angle correction method using the slider angle compensation device 100 according to the present invention is described as follows.
[0046] Figure 6 FIG. is a diagram showing a slider angle correction method using the slider angle compensation device 100 according to the present invention.
[0047] First, the angular error / twist of the slider 120 is sensed by using an inclination sensing sensor (not shown) that cooperates with the slider 120 or by using a separate inclination sensing device (not shown) for ultrasonic waves or light. At this time, the angular error / twist of the slider 120 is judged based on the entire structure or the base frame 11, and the value sensed by the inclination sensing sensor or the sensing device may include a multi-dimensional inclination value.
[0048] When the value of the angular error / twist of the slider 120 is generated, based on the generated value and using the control unit of the inclination sensing device or a separate processor (not shown), the rotation angles of the moving frame 150 and the second curved body 140 are set to compensate for the angular error / twist of the slider 120. As Figure 6 shown, if it is judged that the slider 120 is inclined 1 degree to the left (counterclockwise), the compensation value, that is, the rotation angles of the moving frame 150 and the second curved body 140, will be set to 1 degree to the right (clockwise) based on the slider 120 or the bolt 160.
[0049] Thereafter, with the bolts 160 slightly loosened or removed, the moving frame 150 and the second curved surface body 140 are rotated only by the set rotation angle described above. At this time, the moving frame 150 and the second curved surface body 140 can be rotated manually, but for accurate compensation, it is preferable to use a separate mechanical device (not shown) for rotation.
[0050] Next, after the moving frame 150 and the second curved surface body 140 are rotated, if each bolt 160 is tightened, each bolt 160 penetrates the moving frame 150 and the second curved surface body 140 without being connected and is connected to the insertion port 131 of the first curved surface body 130. As a result, each bolt 160 is perpendicular to the surface of the slider 120 by the insertion port 131, and thus is inclined to the left (counterclockwise) as the angle error / twist of the slider 120 changes.
[0051] At this time, the second washer 180 rotates on the spherical surface of the first washer 170 under the pressure of the head 161 of the bolt 160. For example, as Figure 6 shown, as the bolt 160 inclines to the left (counterclockwise), the left side of the second washer 180 bears pressure and the right side of the second washer 180 rises.
[0052] As a result, the second washer 180 rotates on the first washer 170 according to the angle error / twist of the slider 120 and the inclination of the bolt 160, and the second washer 180 rotates on the spherical surface of the first washer 170 due to the pressure of the head 161 of the bolt 160.
[0053] Through this compensation method, even if there is an angle error / twist in the slider 120, no eccentricity will occur on the rail 110, the slider 120, the moving frame 150, etc., so that the moving frame 150 can move parallel to the base frame 11 without generating an angle error / twist.
[0054] As described above, although the present invention has been illustrated and described in connection with the preferred embodiments for exemplifying the principles of the present invention, the present invention is not limited to the original configuration and operation thus illustrated and described. Instead, those skilled in the art will clearly understand that various changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims.
Claims
1. A slider angle compensation device, characterized in that: include: A first curved body, which cooperates with the outer surface of the slider moving along the track and has a bulging curved surface; A second curved body, which cooperates with a surface of a moving frame that moves with the movement of the slider, and has a concave curved surface corresponding to the curved surface of the first curved body; One or more bolts connected to the first curved body so that the first and second curved bodies overlap; one or more first washers having a lower portion contacting the outer surface of the moving frame and an upper portion having a concave spherical surface; and, One or more second washers are located between the head of the bolt and the first washer and have a lower portion formed with a bulged spherical surface corresponding to the spherical surface of the first washer and an upper portion in contact with the bottom surface of the head of the bolt.
2. The slider angle compensation device according to claim 1, characterized in that: The second curved surface body is configured to rotate based on a track in the longitudinal direction in order to compensate for an angular error of the slider.
3. The slider angle compensation device according to claim 1, characterized in that: The second curved surface body is configured to rotate at a certain angle based on the track in the longitudinal direction according to the angular error of the slider.
4. The slider angle compensation device according to claim 1, characterized in that: The one or more bolts are configured to be perpendicular to the outer surface of the slider and to be inclined according to an angular error of the slider.
5. The slider angle compensation device according to claim 1, characterized in that: The moving frame and the second curved body each include a through hole having a diameter larger than that of the one or more bolts, so that the one or more bolts are inclined according to an angular error of the slider.
6. The slider angle compensation device according to claim 1, characterized in that: The one or more bolts are configured to penetrate the moving frame and the second curved body when they are not connected and to be threadedly connected to the first curved body.
7. The slider angle compensation device according to claim 1, characterized in that: The one or more bolts are composed of two or more bolts arranged in a horizontal direction.
8. The slider angle compensation device according to claim 1, characterized in that: The second washer is configured to rotate on the first washer according to an angular error of the slider and an inclination of the bolt.
9. The slider angle compensation device according to claim 1, characterized in that: The second washer is configured to rotate on the spherical surface of the first washer due to pressure from the head of the bolt.
10. The slider angle compensation device according to claim 1, characterized in that: The inner diameter of the second gasket is smaller than the inner diameter of the first gasket.
11. A slider angle compensation method, characterized in that: The slider angle is compensated by using a slider angle compensation device, wherein the slider angle compensation device includes: a first curved body, which cooperates with the outer surface of the slider moving along the track and has a bulged curved surface; a second curved body, which cooperates with a surface of a moving frame moving with the movement of the above-mentioned slider and has a concave curved surface corresponding to the curved surface of the above-mentioned first curved body; one or more bolts, which are connected to the above-mentioned first curved body so that the first and second curved bodies overlap; one or more first washers, which have a lower portion contacting the outer surface of the above-mentioned moving frame and an upper portion formed with a concave spherical surface; and one or more second washers, which are located between the head of the above-mentioned bolt and the above-mentioned first washer, and have a lower portion formed with a bulged spherical surface corresponding to the spherical surface of the above-mentioned first washer and an upper portion contacting the bottom surface of the head of the above-mentioned bolt, The slider angle compensation method comprises: The step of sensing the angular error / distortion of the slider and generating a value for the angular error / distortion; The step of setting the rotation angles of the moving frame and the second curved body based on the generated values to compensate for the angular error / distortion of the slider; The step of rotating the moving frame and the second curved body according to the set rotation angle; and A step of connecting the bolt to the first curved body after passing through the movable frame and the second curved body.
12. The slider angle compensation method according to claim 11, characterized in that: In the step of connecting the bolt to the first curved body, The bolt is perpendicular to the surface of the slider and tilts with the angular error / twist of the slider.
13. The slider angle compensation method according to claim 11, characterized in that: In the step of connecting the bolt to the first curved body, The second washer is pressurized by the bolt to rotate the second washer on the spherical surface of the first washer.