Linear bearing and machining apparatus having the same

Abstract

The application discloses a linear bearing and a machining device with the same. The linear bearing comprises a plurality of mounting plates which are connected in a detachable manner, and the plurality of mounting plates enclose a cavity with both ends being through. At least one of the mounting plates can be retracted towards the inside of the cavity or moved outwards towards the outside of the cavity. A plurality of rolling bodies are arranged on the side of the mounting plates facing the cavity, and the plurality of rolling bodies enclose a workpiece supporting channel. According to the linear bearing, the plurality of mounting plates are connected in a detachable manner, and a plurality of cavity shapes can be obtained, thereby improving the versatility of the linear bearing. In addition, when parts are worn and the gap is increased after long-term work of the linear bearing, the position of the movable mounting plate can be adjusted to compensate for the gap, thereby ensuring that the linear bearing can still effectively support the workpiece.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, and more specifically, to a linear bearing and processing equipment having the linear bearing. Background Technology

[0002] Currently, linear bearings are mainly suitable for cylindrical parts, but there is a lack of versatile products for cuboid, regular polygonal prism, and other similar parts. Furthermore, there is a lack of effective compensation functions for the decrease in precision caused by wear and increased clearances in linear bearings after long-term operation. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes a linear bearing that has good versatility and can perform clearance compensation.

[0004] The present invention also proposes a processing device having the above-mentioned linear bearing.

[0005] According to an embodiment of the present invention, a linear bearing includes: a plurality of mounting plates, which are detachably connected to each other, and the plurality of mounting plates enclose a cavity that extends through both ends. At least one of the mounting plates is retractable inward or outward inward of the cavity. A plurality of rolling elements are provided on the side of the mounting plate facing the cavity, and the plurality of rolling elements enclose a workpiece support channel.

[0006] According to embodiments of the present invention, the linear bearing can be detachably connected by multiple mounting plates to obtain cavities of various shapes, thereby improving the versatility of the linear bearing. In addition, when the linear bearing experiences wear and increased clearance after long-term operation, clearance compensation can be performed by adjusting the position of the movable mounting plates.

[0007] According to some embodiments of the present invention, a rolling element retainer is mounted on the side of the mounting plate facing the cavity, the rolling element retainer is provided with a rolling element mounting groove, and the rolling element is adapted to be mounted in the rolling element mounting groove.

[0008] According to some embodiments of the present invention, the plurality of mounting plates include: a first plate, a second plate, and a third plate and a fourth plate disposed opposite to each other, the third plate being adapted to be connected to one side of the first plate and the second plate, the fourth plate being adapted to be connected to the other side of the first plate and the second plate, and the rolling element being disposed on the side of the first plate, the second plate, the third plate, and the fourth plate facing the cavity.

[0009] According to some embodiments of the present invention, the first plate can be retracted toward the interior of the cavity or moved outward toward the exterior of the cavity.

[0010] Furthermore, the first plate is provided with a plurality of first threaded through holes, which are directly opposite to the top surface of the third plate and the top surface of the fourth plate. A first adjusting bolt is provided in the first threaded through hole, and the end of the first adjusting bolt is adapted to abut against the top surface of the third plate and the top surface of the fourth plate. The first adjusting bolt and the first plate have the same movable direction.

[0011] According to some embodiments of the present invention, the third plate can be retracted toward the interior of the cavity or moved outward toward the exterior of the cavity.

[0012] Furthermore, a third mounting hole is provided on the third plate, and a first through hole corresponding to the position of the third mounting hole is provided on the first plate. The third mounting hole is a length adjustment hole, and the length direction of the length adjustment hole is the same as the movable direction of the third plate. The positioning pin passes through the first through hole and the length adjustment hole and is positioned on the second plate.

[0013] Furthermore, the linear bearing further includes: a clearance adjusting plate, the clearance adjusting plate being fixed to the first plate and / or the second plate, the clearance adjusting plate having a second threaded through hole, the second threaded through hole having a second adjusting bolt being provided therein, the second adjusting bolt being adapted to abut against the outer side of the third plate, and the second adjusting bolt having the same movable direction as the third plate.

[0014] According to some embodiments of the present invention, the mounting plate is provided with an oil passage communicating with the cavity and the outside of the mounting plate.

[0015] The processing equipment according to another embodiment of the present invention includes the linear bearing described above.

[0016] The processing equipment described above has the same advantages over existing technologies as the linear bearings mentioned above, and will not be repeated here.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a linear bearing according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the linear bearing after removing the third plate;

[0020] Figure 3 This is a front view of a linear bearing according to an embodiment of the present invention;

[0021] Figure 4 This is a rear view of a linear bearing according to an embodiment of the present invention;

[0022] Figure 5 This is a partial sectional view of the rear view of a linear bearing according to an embodiment of the present invention;

[0023] Figure 6 This is a side view of a linear bearing according to an embodiment of the present invention;

[0024] Figure 7 This is an exploded view of a linear bearing according to an embodiment of the present invention;

[0025] Figure 8 This is a top view of a linear bearing according to an embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of a processing device according to an embodiment of the present invention.

[0027] Figure label:

[0028] Processing equipment 100, linear bearing 10, first plate 11, first threaded through hole 111, first adjusting bolt 112, first mounting hole 113, first groove 114, first through hole 115, first connecting hole 116, second plate 12, second mounting hole 121, second groove 122, second connecting hole 123, weight reduction hole 124, third plate 13, third mounting hole 131, fourth plate 14, fourth plate body 141, body mounting hole 1411, body pin hole 1412, etc. 142, extension edge of four plates, 1421, extension edge mounting hole, 143, fourth groove, 15, oil passage, 16, locating pin, 2, rolling element cage, 21, 22, 23, 24, rolling element mounting groove, 26, cage fixing hole, 3, rolling element, 4, clearance adjusting plate, 5, second threaded through hole, 51, second adjusting bolt, 52, first clearance mounting hole, 53, second clearance mounting hole, 54, oil nozzle, 6, workpiece, 20. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "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 invention 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 invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] The following is combined with Figures 1-8 The linear bearing 10 according to an embodiment of the present invention is described in detail.

[0034] Reference Figures 1-8 As shown, the linear bearing 10 according to an embodiment of the present invention may include: a bearing housing, the bearing housing including a plurality of mounting plates, the plurality of mounting plates being detachably connected, thereby facilitating the replacement of easily damaged mounting plates and easily damaged parts inside the mounting plates, and also facilitating the cleaning of the inner area of ​​the mounting plates. Furthermore, by selecting mounting plates of appropriate size, various structural types of bearing housings can be assembled, making the linear bearing 10 highly versatile.

[0035] Multiple mounting plates enclose a cavity that extends through both ends. At least one mounting plate can retract into the cavity or move outward. Multiple rolling elements 3 are positioned on the side of the mounting plate facing the cavity, forming a workpiece support channel. This channel supports the workpiece 20, and the rolling elements 3 provide circumferential positioning for the workpiece 20. The workpiece 20 can also move axially with the support of the rolling elements 3. When the mounting plate retracts into the cavity, the workpiece support channel shrinks; when the mounting plate moves outward, the channel expands. This allows the linear bearing 10 to adapt to workpieces 20 of different sizes. Furthermore, when clearance occurs in the linear bearing 10, causing a decrease in accuracy, the clearance can be eliminated by adjusting the position of the mounting plate, thus maintaining high accuracy for the linear bearing 10.

[0036] By changing the angle between the mounting plates and the number of mounting plates, different geometric shapes can be formed to accommodate workpieces 20 with various irregular geometric cross-sections. In other words, the shape of the workpiece support channel is related to the shape enclosed by the multiple mounting plates. For example, when multiple mounting plates enclose a cavity with a rectangular cross-section, the workpiece support channel is a channel with a rectangular cross-section to facilitate support for workpieces 20 with rectangular cross-sections, such as... Figures 1-8 As shown. In some embodiments not shown, when multiple mounting plates are assembled to form cavities of other shapes, the workpiece support channel is a channel of a corresponding shape to facilitate support for workpieces 20 with the same cross-sectional shape. For example, a cylindrical workpiece support channel is formed in a cylindrical cavity to support the cylindrical workpiece 20.

[0037] Optionally, the rolling element 3 is a needle roller, which provides better support when supporting the workpiece 20. In some other optional embodiments, the rolling element 3 can be a ball roller.

[0038] According to an embodiment of the present invention, the linear bearing 10 is detachably connected by multiple mounting plates, which can form cavities of various shapes. Furthermore, the dimensions of the mounting plates can be freely adjusted according to the dimensions of the workpiece 20, thereby improving the versatility of the linear bearing 10 and facilitating the cleaning and maintenance of components inside the mounting plates. In addition, when the linear bearing 10 experiences component wear and increased clearance after long-term operation, clearance compensation can be performed by adjusting the position of the movable mounting plates, ensuring that the linear bearing 10 can still effectively support the workpiece 20.

[0039] In some embodiments of the present invention, a rolling element retainer 2 is mounted on the side of the mounting plate facing the cavity (i.e., the inner side). The rolling element retainer 2 is provided with a rolling element mounting groove 25, and the rolling element 3 is adapted to be installed in the rolling element mounting groove 25. By providing the rolling element retainer 2, the position of the rolling element 3 can be fixed, preventing the rolling element 3 from falling out randomly. The rolling element retainer 2 can be fixed to the inner side of the mounting plate. During assembly, the rolling element 3 can be installed in the rolling element mounting groove 25 first to form a rolling assembly, and then the rolling assembly can be installed on the inner side of the mounting plate. Alternatively, the rolling element retainer 2 can be installed on the mounting plate first, and then the rolling element 3 can be installed in the rolling element mounting groove 25.

[0040] In some embodiments of the present invention, reference is made to... Figures 1-8 As shown, the multiple mounting plates may include: a first plate 11, a second plate 12, and a third plate 13 and a fourth plate 14, which are arranged opposite to each other. The third plate 13 is adapted to connect to one side of the first plate 11 and the second plate 12, and the fourth plate 14 is adapted to connect to the other side of the first plate 11 and the second plate 12. Rolling elements 3 are provided on the side of the first plate 11, the second plate 12, the third plate 13, and the fourth plate 14 facing the cavity (i.e., the inner side of the mounting plate). The rolling elements 3 on the inner sides of the first plate 11, the second plate 12, the third plate 13, and the fourth plate 14 form a workpiece support channel. Figures 1-8 In the embodiment shown, the first plate 11, the second plate 12, the third plate 13, and the fourth plate 14 form a cuboid cavity that extends through both ends.

[0041] Reference Figures 6-7 As shown, the rolling element cage 2 includes a first cage 21, a second cage 22, a third cage 23, and a fourth cage 24. The first cage 21 is located on the inner side of the first plate 11, the second cage 22 is located on the inner side of the second plate 12, the third cage 23 is located on the inner side of the third plate 13, and the fourth cage 24 is located on the inner side of the fourth plate 14. In a specific embodiment, cage fixing holes 26 can be formed on the rolling element cage 2, as shown in the figure. Figure 7 As shown, the rolling element cage 2 is fixed to the corresponding mounting plate after bolts are passed through the cage fixing holes 26.

[0042] Furthermore, referring to Figures 6-7 As shown, the inner side of the first plate 11 is provided with a first groove 114, and the first retainer 21 is located in the first groove 114. The inner side of the second plate 12 is provided with a second groove 122, and the second retainer 22 is located in the second groove 122. This facilitates the positioning of the first retainer 21 and the second retainer 22 on the corresponding mounting plates.

[0043] exist Figures 6-7In the illustrated embodiment, the fourth cage 24 includes two separate split cages, each with a cage fixing hole 26. The inner surface of the fourth plate 14 has a fourth groove 143, which separates the two split cages. The fourth groove 143 can be designed to allow space between the workpiece 20 and the structure. In other words, the rolling element cage 2 and the rolling elements 3 can be designed to provide clearance for the guided workpiece 20 according to actual needs, allowing the linear bearing 10 to adapt to various irregular structures. Of course, if clearance from the workpiece 20 is not required, the rolling element cage 2 does not need to be designed as a split structure; an integrated rolling element cage 2 has higher strength and better guiding effect.

[0044] In some embodiments of the present invention, the first plate 11 can be retracted towards the interior of the cavity or moved outward towards the exterior of the cavity. Adjusting the position of the first plate 11 according to the operating conditions can achieve the purpose of adjusting the internal clearance of the linear bearing 10, so as to compensate for the wear of components caused by long-term operation and ensure that the working accuracy remains unchanged.

[0045] Furthermore, in Figures 1-3 , Figure 5 , Figures 7-8 In the illustrated embodiment, the first plate 11 has multiple first threaded through holes 111, which are directly opposite the top surfaces of the third plate 13 and the fourth plate 14. A first adjusting bolt 112 is installed within each of the first threaded through holes 111. The end of the first adjusting bolt 112 is adapted to abut against the top surfaces of the third plate 13 and the fourth plate 14, and the first adjusting bolt 112 and the first plate 11 have the same movable direction. By changing the screw depth of the first adjusting bolt 112 into the first threaded through hole 111, the position of the first plate 11 can be changed. That is, the position of the first plate 11 can be adjusted vertically to change the distance between the first plate 11 and the second plate 12, thus changing the dimension H of the cavity and consequently the dimension of the workpiece support channel.

[0046] In some embodiments of the present invention, the third plate 13 can be retracted towards the interior of the cavity or moved outward towards the exterior of the cavity. Adjusting the position of the third plate 13 according to the operating conditions can achieve the purpose of adjusting the internal clearance of the linear bearing 10, so as to compensate for the wear of components caused by long-term operation and ensure that the working accuracy remains unchanged.

[0047] Furthermore, in Figure 2 , Figure 7In the illustrated embodiment, the third plate 13 has a third mounting hole 131, and the first plate 11 has a first through hole 115 corresponding to the position of the third mounting hole 131. The third mounting hole 131 is a length adjustment hole, and the length direction of the length adjustment hole is the same as the movable direction of the third plate 13. The positioning pin 16 passes through the first through hole 115 and the length adjustment hole and is positioned on the second plate 12. The third plate 13 is restricted to five degrees of freedom and can only move along the dimension L direction.

[0048] like Figure 2 , Figure 7 As shown, the second plate 12 is provided with a second mounting hole 121. In some optional embodiments, the positioning pin 16 passes through the first through hole 115, the third mounting hole 131, and the second mounting hole 121 simultaneously to achieve relative fixation between the first plate 11, the third plate 13, and the second plate 12. The third mounting hole 131 is a length adjustment hole, and the length direction of the length adjustment hole is the same as the movable direction of the third plate 13. The first mounting hole 113 and the second mounting hole 121 are pin holes that match the size of the pin. Therefore, the third plate 13 can only move along the dimension L direction.

[0049] Reference Figure 7 As shown, the first plate 11 is also provided with a first mounting hole 113, a part of which is directly opposite to the third plate 13. The threaded connector 4 passes through the first mounting hole 113 and the mounting hole on the third plate 13, and is fastened in the mounting hole on the second plate 12, so as to realize the fixed connection between the first plate 11, the third plate 13, and the second plate 12.

[0050] Furthermore, the linear bearing 10 may also include: a clearance adjusting plate 5, the clearance adjusting plate 5 being fixed to the first plate 11 and / or the second plate 12, see reference. Figures 1-3 , Figure 7As shown, the gap adjusting plate 5 has a first gap mounting hole 53 and a second gap mounting hole 54. The first plate 11 has a first connecting hole 116 on its side, and the second plate 12 has a second connecting hole 123 on its side. A bolt is passed through the first gap mounting hole 53 and tightened into the first connecting hole 116. Similarly, a bolt is passed through the second gap mounting hole 54 and tightened into the second connecting hole 123, thus fixing the gap adjusting plate 5 to the first plate 11 and the second plate 12. The gap adjusting plate 5 has a second threaded through hole 51, in which a second adjusting bolt 52 is installed. The second adjusting bolt 52 is adapted to abut against the outer side of the third plate 13, and the second adjusting bolt 52 and the third plate 13 have the same movable direction. By changing the screw depth of the second adjusting bolt 52 into the second threaded through hole 51, the position of the third plate 13 can be changed. That is, the position of the third plate 13 can be adjusted in the left-right direction to change the distance between the third plate 13 and the fourth plate 14, thereby changing the size L of the cavity and thus the size of the workpiece support channel.

[0051] The fourth plate 14 is fixedly connected to the first plate 11 and the second plate 12, as shown in the reference. Figure 7 As shown, the fourth plate 14 has a U-shaped structure and includes: a fourth plate body 141 and a fourth plate extension edge 142. The top surface of the fourth plate body 141 has a body mounting hole 1411 and a body pin hole 1412. The first plate 11 has a first mounting hole 113 corresponding to the position of the body mounting hole 1411 and a first through hole 115 corresponding to the position of the body pin hole 1412. The positioning pin 16 passes through the first through hole 115 and the body pin hole 1412 and is inserted into the second pin hole on the second plate 12 to achieve positioning between the first plate 11, the fourth plate 14 and the second plate 12, forming a precise positioning of the three. The bolt passes through the first mounting hole 1411 and the fourth plate 1412. The mounting holes 113 and 1411 allow for the fixed connection between the first plate 11 and the fourth plate body 141. The fourth plate extension edge 142 has an extension edge mounting hole 1421. Bolts pass through the extension edge mounting hole 1421 and the corresponding hole on the first plate 11, thus achieving a fixed connection between the first plate 11 and the fourth plate extension edge 142. Bolts also pass through the extension edge mounting hole 1421 and the corresponding hole on the second plate 12, thus achieving a fixed connection between the second plate 12 and the fourth plate extension edge 142. In this way, the first plate 11, the fourth plate 14, and the second plate 12 can be fixed using threaded fasteners, connecting the three together to form a C-shaped part.

[0052] Reference Figures 1-5As shown, the second plate 12 can be provided with multiple weight-reducing holes 124 to reduce the weight of the first plate 11. The weight-reducing holes 124 are through square holes and also serve as clearance holes for mounting the linear bearing 10 onto the processing equipment. Of course, in some alternative embodiments, if other mounting methods are used, the second plate 12 can also be constructed in other shapes, such as thin plate parts.

[0053] In some embodiments of the present invention, the mounting plate is provided with an oil passage 15 that connects the cavity to the outside of the mounting plate. For example... Figures 1-2 , Figure 7 As shown, the third plate 13 is equipped with an oil nozzle 6, which is connected to the oil passage 15. Lubricating oil can be introduced into the oil passage 15 through the oil nozzle 6. The lubricating oil in the oil passage 15 further enters the rolling element 3 in the cavity, thereby lubricating the rolling element 3. Oil can be periodically injected into the oil nozzle 6 for lubrication, or circulating oil can be introduced to lubricate and clean the interior at the same time.

[0054] When assembling the linear bearing 10 of this embodiment, the rolling element cage 2 can first be installed on the surfaces of the first plate 11, the second plate 12, the third plate 13, and the fourth plate 14, and then fastened to the corresponding mounting plates with screws. The rolling elements 3 are then installed in the rolling element mounting grooves 25 of the rolling element cage 2. The rolling elements 3 are positioned and fixed by the rolling element cage 2 with the inner surface of the mounting plate as a reference, forming a structure similar to four needle roller rows.

[0055] The first plate 11, the second plate 12, the third plate 13, and the fourth plate 14 are then assembled into a square housing using locating pins 16 and threaded connectors 4. The interior of the square housing forms a cavity with a rectangular cross-section. During installation, the second plate 12 serves as the reference for the entire linear bearing 10. Locating pins 16 are inserted through the first through hole 115 on the first plate 11 and the body pin hole 1412 on the fourth plate 14, and then inserted into the second pin hole on the second plate 12, achieving precise positioning of the three components. Finally, threaded connectors are used to fix the first plate 11, the fourth plate 14, and the second plate 12, connecting them into a single C-shaped part.

[0056] Two or more locating pins 16 are inserted from above the first plate 11 into the first through hole 115, through the third mounting hole 131 of the third plate 13, and into the second mounting hole 121 on the second plate 12, restricting the five degrees of freedom of the third plate 13 so that it can only move along the dimension L. A clearance adjusting plate 5 is installed on the first plate 11 and the second plate 12 with screws. The third plate 13 is moved by the second adjusting bolt 52 through the second threaded through hole 51 on the clearance adjusting plate 5, thereby adjusting the dimension L of the bearing housing cavity. A first threaded through hole 111 is designed on the first plate 11. The first adjusting bolt 112 is screwed in, and the first adjusting bolt 112 presses against the upper surfaces of the third plate 13 and the fourth plate 14, thus moving the first plate 11 and adjusting the dimension H of the bearing housing cavity.

[0057] The rolling elements 3, evenly distributed on the four surfaces of the bearing housing cavity, can position the workpiece 20 in five circumferential degrees of freedom, while retaining one axial degree of freedom. By adjusting the cavity size L through the clearance adjustment plate 5, the clearance between the rolling elements 3 and the workpiece 20 can be changed, improving working accuracy. Then, by applying a thrust to the workpiece 20 through an external power source, the workpiece 20 can achieve high-precision reciprocating movement in the axial direction to complete the work.

[0058] Reference Figure 9 As shown, the processing equipment 100 according to another embodiment of the present invention includes the linear bearing 10 of the above embodiment. Compared with conventional cylindrical linear bearings, the linear bearing 10 of the present invention imposes fewer restrictions on the cross-sectional shape of the workpiece 20. Furthermore, by designing the bearing housing as a detachable multi-mounting seat structure, the working surfaces of each component are transformed into planes, significantly reducing processing difficulty. Compared with dovetail groove guides and rectangular guides, the linear bearing 10 of the present invention converts sliding friction into rolling friction, effectively reducing frictional resistance. Simultaneously, the workpiece 20 does not need to be machined with dovetail grooves or rectangular slots, effectively reducing the size and structural limitations of the workpiece 20 and further improving guiding accuracy.

[0059] Alternatively, the processing equipment 100 may be a deburring device.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A linear bearing, characterized in that, include: Multiple mounting plates are detachably connected to form a cavity with both ends open. At least one mounting plate can be retracted into the cavity or moved outward. Multiple rolling elements are provided on the side of the mounting plate facing the cavity, and the multiple rolling elements form a workpiece support channel. The plurality of mounting plates include: a first plate and a second plate disposed opposite to each other, and a third plate and a fourth plate disposed opposite to each other, wherein the third plate is adapted to be connected to one side of the first plate and the second plate, and the fourth plate is adapted to be connected to the other side of the first plate and the second plate; The first plate has a plurality of first threaded through holes, which are directly opposite the top surfaces of the third plate and the fourth plate. A first adjusting bolt is provided in the first threaded through hole. The end of the first adjusting bolt is adapted to abut against the top surfaces of the third plate and the fourth plate, and the first adjusting bolt has the same movable direction as the first plate.

2. The linear bearing according to claim 1, characterized in that, A rolling element holder is mounted on the side of the mounting plate facing the cavity. The rolling element holder is provided with a rolling element mounting groove, and the rolling element is adapted to be installed in the rolling element mounting groove.

3. The linear bearing according to claim 1, characterized in that, The first plate, the second plate, the third plate, and the fourth plate are all provided with the rolling element on the side facing the cavity.

4. The linear bearing according to claim 3, characterized in that, The first plate can be retracted into the cavity or moved outward from the cavity.

5. The linear bearing according to any one of claims 3-4, characterized in that, The third plate can be retracted inwards or moved outwards from the cavity.

6. The linear bearing according to claim 5, characterized in that, The third plate has a third mounting hole, and the first plate has a first through hole corresponding to the position of the third mounting hole. The third mounting hole is a length adjustment hole, and the length direction of the length adjustment hole is the same as the movable direction of the third plate. The positioning pin passes through the first through hole and the length adjustment hole and is positioned on the second plate.

7. The linear bearing according to claim 6, characterized in that, Also includes: A gap adjusting plate is fixed to the first plate and / or the second plate. The gap adjusting plate has a second threaded through hole, and a second adjusting bolt is provided in the second threaded through hole. The second adjusting bolt is adapted to abut against the outer side of the third plate, and the second adjusting bolt and the third plate have the same movable direction.

8. The linear bearing according to claim 1, characterized in that, The mounting plate is provided with an oil passage connecting the cavity and the outside of the mounting plate.

9. A processing equipment, characterized in that, The linear bearing includes any one of claims 1-8.

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