Hydrostatic guideway and turning center

Abstract

The application discloses a hydrostatic guide rail and a turning center. The turning center comprises the hydrostatic guide rail, which comprises a guide rail, a sliding block, a bearing table and an oil supply mechanism. The sliding block is slidably arranged on the guide rail. An upper hydrostatic cavity is arranged between the top of the sliding block and the guide rail. A lower hydrostatic cavity is arranged between the bottom of the sliding block and the guide rail. A side hydrostatic cavity is arranged between the sliding block and the guide rail. The bearing table is fixed to the top of the sliding block. The bearing table is provided with a first oil supply channel and a second oil supply channel which are independent of each other. The first oil supply channel is in communication with the upper hydrostatic cavity. The second oil supply channel is in communication with the lower hydrostatic cavity. The oil supply mechanism is in communication with the first oil supply channel and the second oil supply channel. The hydrostatic guide rail and the turning center solve the problem of high cost of the hydrostatic guide rail brake in the prior art.

Description

Technical Field

[0001] This application relates to the field of machining technology, and more specifically, to a hydrostatic guide rail and a turning center. Background Technology

[0002] Turning centers can process shaft parts and rotating parts. During processing, they not only have turning functions, but also can perform multiple composite processing operations such as drilling, boring, milling, thread cutting and tapping.

[0003] Turning centers using hydrostatic guideways offer high stability and machining accuracy. However, existing hydrostatic guideways require additional braking components, leading to high braking costs. Utility Model Content

[0004] The main objective of this application is to provide a hydrostatic guide rail and a turning center, so as to at least solve the problem of high braking cost of hydrostatic guide rails in the prior art.

[0005] According to one aspect of this application, a hydrostatic guide rail is provided, comprising:

[0006] guide;

[0007] A slider is slidably disposed on the guide rail, with an upper static pressure cavity between the top of the slider and the guide rail, and a lower static pressure cavity between the bottom of the slider and the guide rail;

[0008] A support platform is fixed to the top of the slider. The support platform has a first oil supply channel and a second oil supply channel that are independent of each other. The first oil supply channel is connected to the upper static pressure chamber, and the second oil supply channel is connected to the lower static pressure chamber.

[0009] The oil supply mechanism is connected to both the first oil supply channel and the second oil supply channel.

[0010] Furthermore, the upper surface of the slider is provided with the upper static pressure chamber, and the slider is provided with an upper oil supply channel, the first oil supply channel being connected to the upper static pressure chamber through the upper oil supply channel; and / or,

[0011] The lower surface of the slider has the lower static pressure chamber, and the slider has a lower oil supply channel. The second oil supply channel communicates with the lower static pressure chamber through the lower oil supply channel; and / or,

[0012] A limiting groove is provided on the guide rail, and the slider is slidably disposed in the limiting groove. A side static pressure cavity is provided on the side of the slider near the side wall of the limiting groove, and a side oil supply channel is provided inside the slider. The first oil supply channel is connected to the side static pressure cavity through the side oil supply channel.

[0013] Furthermore, the upper surface of the slider is provided with a first groove, which extends along the length of the slider. The upper static pressure chamber has a first sidewall on the side near the first groove. The extension direction of the first sidewall is parallel to the extension direction of the first groove, and the vertical distance from each of the first sidewalls to the first groove is the same; and / or,

[0014] The lower surface of the slider is provided with a second groove, which extends along the length of the slider. The lower static pressure chamber has a second sidewall on the side near the second groove. The extension direction of the second sidewall is parallel to the extension direction of the second groove, and the vertical distance from each second sidewall to the second groove is the same.

[0015] Further, the upper static pressure chamber includes multiple chambers, which are spaced apart along the length of the slider, and each upper static pressure chamber is located on the same side away from the first groove. The upper surface of the slider has a third groove extending along the width of the slider. The third groove communicates with the first groove and is located between two adjacent upper static pressure chambers. The vertical distance from the midline of the third groove along the length of the slider to the sidewall of the two adjacent upper static pressure chambers is the same; and / or,

[0016] The lower static pressure chamber includes multiple chambers, which are spaced apart along the length of the slider. Each lower static pressure chamber is located on the same side away from the second groove. The lower surface of the slider has a fourth groove that extends along the width of the slider and communicates with the second groove. The fourth groove is located between two adjacent lower static pressure chambers. The vertical distance from the midline of the fourth groove along the length of the slider to the sidewall of the two adjacent lower static pressure chambers is the same.

[0017] Furthermore, the bottom of the support platform is provided with a mounting groove, and the hydrostatic guide rail also includes a drive assembly, which is disposed between the support platform and the guide rail, and the drive assembly is fixed to the mounting groove.

[0018] Furthermore, the hydrostatic guide rail also includes a control mechanism, which includes:

[0019] A position monitoring component is disposed on the guide rail and / or the support platform, and the position monitoring component is at least used to monitor the position of the support platform on the guide rail;

[0020] The controller is electrically connected to the position monitoring component, the drive component, and the oil supply mechanism. The controller is at least used to control the oil supply mechanism and the drive component based on the signals transmitted by the position monitoring component.

[0021] Furthermore, the upper static pressure chamber includes multiple chambers, which are spaced apart along the length of the slider on its upper surface. The first oil supply channel includes a first main flow channel and multiple first branch flow channels, each of which is connected to the first main flow channel. Each first branch flow channel is connected to each of the upper static pressure chambers in a corresponding manner; and / or,

[0022] The lower static pressure chamber includes multiple chambers, which are spaced apart on the lower surface of the slider along the length of the slider. The second oil supply channel includes a second main flow channel and multiple second branch flow channels that are all connected to the second main flow channel. Each second branch flow channel is connected to each lower static pressure chamber in a corresponding manner.

[0023] Furthermore, the area and shape of each of the aforementioned upper static pressure cavities are identical; and / or,

[0024] All of the aforementioned lower static pressure chambers have the same area and shape; and / or,

[0025] The depth H1 of the upper static pressure chamber satisfies the relationship 1.5mm ≤ H1 ≤ 2.5mm; and / or,

[0026] The depth H2 of the lower static pressure chamber satisfies the relationship 1.5mm≤H2≤2.5mm.

[0027] Furthermore, the hydrostatic guide rail also includes a throttling component, which is at least disposed within the first oil supply channel and the second oil supply channel; wherein, the throttling component includes a capillary throttler, which includes various models of capillary throttlers, each model having a different pressure regulating range, and each model of capillary throttler can be selectively and detachably connected within the first oil supply channel and the second oil supply channel; and / or,

[0028] The throttling component includes a throttling valve and a controller, the throttling valve being electrically connected to the controller, and the controller being used at least to regulate the flow rate of the throttling valve.

[0029] On the other hand, this application also provides a turning center, which includes the above-mentioned hydrostatic guide rail.

[0030] Compared to existing technologies, the bearing platform of this application has independent first and second oil supply channels. The first oil supply channel is connected to the upper static pressure chamber, and the second oil supply channel is connected to the lower static pressure chamber. Both the first and second oil supply channels are connected to the oil supply mechanism. That is, when the slider needs to brake and stop at a designated position on the guide rail, the external force applied to the slider to move it on the guide rail is first removed, and the slider stops moving. Then, the oil supply mechanism stops supplying oil to the second oil supply channel. At this time, the oil film in the lower static pressure chamber disappears, and the slider directly contacts the guide rail, increasing the static friction between the slider and the guide rail. Simultaneously, because the oil supply mechanism continuously supplies oil to the upper static pressure chamber, the oil film in the upper static pressure chamber applies a downward load force along the height direction of the static pressure guide rail to the slider, further increasing the friction between the slider and the guide rail, thereby locking the slider at the designated position. When the slider needs to continue sliding on the guide rail, the oil supply mechanism supplies oil to the second oil supply channel, generating an oil film in the lower hydrostatic chamber. This prevents the slider from directly contacting the guide rail during movement, thus avoiding potential damage to either the slider or the guide rail. Subsequently, an external force is applied to the slider to make it slide on the guide rail. Clearly, the hydrostatic guide rail of this application does not require additional braking components, allowing the slider to stop and remain at the designated position when it reaches it, thereby reducing the braking cost of the hydrostatic guide rail to some extent. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0032] Figure 1 This is a schematic diagram of the turning center disclosed in this application;

[0033] Figure 2 This is a schematic diagram of the hydrostatic guide rail disclosed in this application;

[0034] Figure 3 This is a schematic diagram of the exploded structure of the hydrostatic guide rail disclosed in this application;

[0035] Figure 4 This is a schematic diagram of the support platform disclosed in this application from a first-person perspective.

[0036] Figure 5 This is a schematic diagram of the support platform disclosed in this application from a second-view perspective.

[0037] Figure 6 This is an exploded schematic diagram of the support platform, the blocking component, and the capillary throttling device disclosed in this application;

[0038] Figure 7 This is a schematic diagram of the slider disclosed in this application from a third-person perspective.

[0039] Figure 8 This is a schematic diagram of the slider disclosed in this application from a fourth-person perspective.

[0040] Figure 9 This is a cross-sectional view of the slider disclosed in this application.

[0041] The above figures include the following reference numerals:

[0042] 1. Hydrostatic guide rail; 10. Guide rail; 20. Slider; 21. Upper surface; 22. Lower surface; 30. Support platform; 31. First oil supply channel; 32. Second oil supply channel; 33. First opening; 34. Second opening; 40. Drive assembly; 41. Drive unit; 42. Guide unit; 50. Throttling component; 51. Capillary throttling device; 60. Blocking component; 70. Position monitoring assembly; 101. Limiting groove; 201. Upper oil supply channel; 202. Lower oil supply channel Oil passage; 203, side oil supply passage; 211, upper static pressure chamber; 212, first groove; 213, third groove; 221, lower static pressure chamber; 222, second groove; 223, fourth groove; 231, side static pressure chamber; 301, mounting groove; 311, first main flow channel; 312, first branch flow channel; 321, second main flow channel; 322, second branch flow channel; 2111, first side wall; 2112, sealing edge; 2211, second side wall. Detailed Implementation

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0044] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0046] In some existing hydrostatic guide rails 1, after the slider 20 stops working on the guide rail 10, due to the presence of an oil film between the slider 20 and the guide rail 10, and the low coefficient of friction of the oil film, the slider 20 will still slide on the guide rail 10 after being subjected to external force. To make the slider 20 stably brake on the guide rail 10, an additional braking component is usually required, such as setting an electromagnet on the slider 20 or the guide rail 10. When the slider 20 needs to brake, the electromagnet is energized, thereby fixing the slider 20 on the guide rail 10 by magnetic force. However, this design increases the manufacturing cost of the hydrostatic guide rail 1. At the same time, due to the setting of the braking component, the braking component needs to be maintained at a certain time to avoid the slider 20 not being able to stop completely on the guide rail 10 after the braking component is damaged. Maintaining the braking component will also incur certain maintenance costs.

[0047] To reduce the cost of brake components, this application provides a hydrostatic guide rail 1, see appendix. Figure 1 To be continued Figure 9 The hydrostatic guide rail 1 includes: a guide rail 10, a slider 20, a support platform 30, and an oil supply mechanism (not shown in the figure).

[0048] The slider 20 is slidably mounted on the guide rail 10. An upper static pressure chamber 211 is located between the top of the slider 20 and the guide rail 10, and a lower static pressure chamber 221 is located between the bottom of the slider 20 and the guide rail 10. A support platform 30 is fixed to the top of the slider 20. The support platform 30 has two independent oil supply channels: a first oil supply channel 31 and a second oil supply channel 32. The first oil supply channel 31 communicates with the upper static pressure chamber 211, and the second oil supply channel 32 communicates with the lower static pressure chamber 221. The oil supply mechanism is connected to both the first oil supply channel 31 and the second oil supply channel 32.

[0049] Compared to existing technologies, the bearing platform 30 of this application has independent first oil supply channels 31 and second oil supply channels 32. The first oil supply channel 31 is connected to the upper static pressure chamber 211, and the second oil supply channel 32 is connected to the lower static pressure chamber 221. Both the first oil supply channel 31 and the second oil supply channel 32 are connected to the oil supply mechanism. That is, when the slider 20 needs to brake and stop at a designated position on the guide rail 10, the external force applied to the slider 20 to move it on the guide rail 10 is first removed, and the slider 20 stops moving. Subsequently, the oil supply mechanism stops supplying oil to the second oil supply channel 32. At this time, the oil film in the lower static pressure chamber 221 disappears, causing the force between the oil film in the lower static pressure chamber 221 and the slider 20 to disappear. The slider 20 then directly contacts the guide rail 10, increasing the static friction between the slider 20 and the guide rail 10. Simultaneously, as the oil supply mechanism continuously supplies oil to the upper static pressure chamber 211, the oil film in the upper static pressure chamber 211 exerts an effect on the slider 20 along the height direction of the static pressure guide rail 1 (along the attached...). Figure 3 The downward load force (in the Z direction) further increases the friction between the slider 20 and the guide rail 10, thereby locking the slider 20 in the designated position. When the slider 20 needs to continue sliding on the guide rail 10, the oil supply mechanism supplies oil to the second oil supply channel 32, generating an oil film in the lower static pressure chamber 221. This prevents the slider 20 from directly contacting the guide rail 10 during movement, thus avoiding damage to either the slider 20 or the guide rail 10. Subsequently, an external force is applied to the slider 20 to make it slide on the guide rail 10. Obviously, the static pressure guide rail 1 of this application does not require an additional braking component to stop and hold the slider 20 in the designated position when it reaches it, thereby reducing the braking cost of the static pressure guide rail 1 to a certain extent.

[0050] It is worth mentioning that this embodiment differs from the prior art in that the prior art only has one oil supply channel, which simultaneously supplies oil to the upper static pressure chamber 211 and the lower static pressure chamber 221. If the existing technology were to brake the slider 20 by stopping the oil supply to both the upper and lower static pressure chambers 211, the lack of an oil film in the upper static pressure chamber 211 would result in insufficient friction between the slider 20 and the guide rail 10 due to the slider 20's own weight, preventing the slider 20 from fully braking onto the guide rail 10. In this embodiment, however, the presence of an oil film in the upper static pressure chamber 211 applies a load force to the slider 20, significantly increasing the friction between the slider 20 and the guide rail 10, thereby locking the slider 20 onto the guide rail 10.

[0051] As attached Figure 7 and attached Figure 8As shown, the upper surface 21 of the slider 20 has an upper static pressure chamber 211, and the slider 20 has an upper oil supply channel 201. The first oil supply channel 31 communicates with the upper static pressure chamber 211 through the upper oil supply channel 201. The lower surface 22 of the slider 20 has a lower static pressure chamber 221, and the slider 20 has a lower oil supply channel 202. The second oil supply channel 32 communicates with the lower static pressure chamber 221 through the lower oil supply channel 202. A limiting groove 101 is provided on the guide rail 10. The slider 20 is slidably disposed in the limiting groove 101. A side static pressure chamber 231 is provided on the side of the slider 20 near the side wall of the limiting groove 101. A side oil supply channel 203 is provided in the slider 20. The first oil supply channel 31 communicates with the side static pressure chamber 231 through the side oil supply channel 203.

[0052] Existing hydrostatic guide rails 1 typically require hoses for connection between the oil supply channel and the upper hydrostatic chamber 211, the lower hydrostatic chamber 221, or the side hydrostatic chamber 231. However, in this embodiment, since the slider 20 has an upper oil supply channel 201, a lower oil supply channel 202, and a side oil supply channel 203, the first oil supply channel 31 can directly connect to the upper hydrostatic chamber 211 via the upper oil supply channel 201, the second oil supply channel 32 can directly connect to the lower hydrostatic chamber 221 via the lower oil supply channel 202, and the side hydrostatic chamber 231 can connect to the first oil supply channel 31 via the side oil supply channel 203. This configuration reduces the manufacturing cost of the hydrostatic guide rail 1 to some extent and improves space utilization. Furthermore, the slider 20 is positioned within the limiting groove 101, which limits the slider 20, preventing it from falling off the guide rail 10 while sliding on it. In this embodiment, the side static pressure chamber 231 is connected to the first oil supply channel 31 through the side oil supply channel 203. That is to say, no matter whether the oil supply mechanism stops supplying oil to the second oil supply channel 32, there will always be an oil film in the side static pressure chamber 231. This avoids the overturning force on the slider 20 causing the slider 20 to directly contact the side wall of the limiting groove 101 during the process of the oil film disappearing in the lower static pressure chamber 221, which would cause damage to the slider 20 or the guide rail 10.

[0053] Furthermore, the upper surface 21 of the slider 20 is provided with a first groove 212, the first groove 212 being along the length direction of the slider 20 (along the attached...). Figure 3 Extending in the Y direction, the upper static pressure cavity 211 has a first sidewall 2111 on the side near the first groove 212. The extension direction of the first sidewall 2111 is parallel to the extension direction of the first groove 212, and the vertical distance from each first sidewall 2111 to the first groove 212 is the same.

[0054] Specifically, the first groove 212 ensures that the width of the sealing edge 2112 between the first sidewall 2111 and the first groove 212 is the same at all points, thereby avoiding significant differences in the load force applied to the slider 20 at various points of the sealing edge 2112 in the upper static pressure chamber 211. On the other hand, the first groove 212 also has an oil discharge capacity, meaning that the oil in the upper static pressure chamber 211 can be discharged from the slider 20 through the first groove 212, giving the oil the ability to move in a directional manner, so as to facilitate subsequent collection and reuse of the oil.

[0055] Optionally, the lower surface 22 of the slider 20 is provided with a second groove 222, which extends along the length of the slider 20. The lower static pressure chamber 221 has a second sidewall 2211 on the side near the second groove 222. The extension direction of the second sidewall 2211 is parallel to the extension direction of the second groove 222, and the vertical distance from each second sidewall 2211 to the second groove 222 is the same.

[0056] Similarly, the design of the second groove 222 ensures that the width of the sealing edge 2112 between the second sidewall 2211 of the lower static pressure chamber 221 and the second groove 222 is the same at all points, avoiding significant differences in the load-bearing force applied to the slider 20 at different points of the sealing edge 2112. The second groove 222 also has the ability to direct the flow of oil out of the lower static pressure chamber 221, so as to facilitate the subsequent collection of oil.

[0057] In some embodiments, the upper static pressure chamber 211 includes a plurality of chambers, which are spaced apart along the length of the slider 20, and each upper static pressure chamber 211 is located on the same side away from the first groove 212. The upper surface 21 of the slider 20 has a third groove 213, which is located along the width of the slider 20 (as shown in the attached figure). Figure 3 Extending in the X direction, the third groove 213 is connected to the first groove 212, and the third groove 213 is located between two adjacent upper static pressure cavities 211. The vertical distance from the midline of the third groove 213 along the length direction of the slider 20 to the side wall of the two adjacent upper static pressure cavities 211 is the same.

[0058] This configuration ensures that all oil-sealing edges 2112 in each upper static pressure chamber 211 along the length of the slider 20 are identical, thus preventing variations in the width of the oil-sealing edges 2112 along the length of the slider 20, which would result in different load forces exerted on the slider 20 by the oil at these oil-sealing edges 2112. Furthermore, the third groove 213 also serves to guide the oil flow in the upper static pressure chamber 211, allowing leaked oil to flow directionally to a designated location. Additionally, the third groove 213 communicates with the first groove 212, allowing oil in the third groove 213 to flow into the first groove 212.

[0059] Furthermore, the lower static pressure chamber 221 includes multiple chambers, which are spaced apart along the length of the slider 20. Each lower static pressure chamber 221 is located on the same side away from the second groove 222. The lower surface 22 of the slider 20 has a fourth groove 223, which extends along the width of the slider 20. The fourth groove 223 communicates with the second groove 222 and is located between two adjacent lower static pressure chambers 221. The vertical distance from the midline of the fourth groove 223 along the length of the slider 20 to the sidewall of the two adjacent lower static pressure chambers 221 is the same.

[0060] Similarly, through the configuration of this embodiment, the width of each sealing edge 2112 of each lower static pressure chamber 221 along the length direction of the slider 20 is made the same, so as to avoid excessive difference in the bearing force exerted by the oil film on the slider 20 at each sealing edge 2112 along the length direction of the slider 20, thereby causing uneven force on the slider 20. In addition, the fourth groove 223 has a guiding function, and the fourth groove 223 is connected to the second groove 222, so that the oil leaking from the lower static pressure chamber 221 can flow through the fourth groove 223 to the second groove 222, and finally be guided through the second groove 222 to a designated position for collection of hydraulic oil.

[0061] In some embodiments, the bottom of the support platform 30 is provided with a mounting groove 301, and the hydrostatic guide rail 1 further includes a drive assembly 40, which is disposed between the support platform 30 and the guide rail 10, and the drive assembly 40 is fixed to the mounting groove 301.

[0062] Specifically, the drive assembly 40 includes a drive unit 41 and a guide unit 42. The drive unit 41 is fixed to the mounting groove 301. The design of the mounting groove 301 improves the space utilization of the hydrostatic guide rail 1 and reduces the height of the hydrostatic guide rail 1 to a certain extent, thereby lowering the center of gravity of the hydrostatic guide rail 1 and improving its stability. The guide unit 42 is fixed to the guide rail 10 and extends along the extension direction of the guide rail 10. The drive unit 41 can reciprocate on the guide unit 42. That is, the reciprocating motion of the drive unit 41 on the guide unit 42 causes the support platform 30 and the slider 20 to reciprocate on the guide rail 10. In actual braking, when the slider 20 is about to reach the designated position, the drive unit 41 stops moving, and the slider 20 stops at the designated position. Then, the oil supply mechanism stops supplying oil to the second oil supply channel 32, so that the slider 20 is in direct contact with the guide rail 10. At this time, the static friction between the slider 20 and the guide rail 10 is large, and the slider 20 is locked on the guide rail 10. In some embodiments, the drive assembly 40 includes a linear motor, the drive part 41 includes a motor, and the guide part 42 includes a track.

[0063] In some embodiments, the hydrostatic guide rail 1 further includes a control mechanism, which includes a position monitoring component 70 and a controller (not shown in the figure). The position monitoring component 70 is disposed on the guide rail 10 and / or the support platform 30, and is used at least to monitor the position of the support platform 30 on the guide rail 10. The controller is electrically connected to the position monitoring component 70, the drive component 40, and the oil supply mechanism, and is used at least to control the oil supply mechanism and the drive component 40 based on the signals transmitted by the position monitoring component 70.

[0064] In one specific embodiment, the operator can pre-input the braking position of the support platform 30 into the controller. When the controller indicates that the support platform 30 has reached the designated position based on the signal transmitted by the position monitoring component 70, the controller first controls the drive component 40 to stop moving, and then controls the oil supply mechanism to stop supplying oil to the second oil supply channel 32, so that the slider 20 stops on the guide rail 10. When the slider 20 needs to continue sliding, the controller first controls the oil supply mechanism to supply oil to the second oil supply channel 32, so that there is an oil film in the lower oil chamber, preventing the slider 20 from directly contacting the guide rail 10, and then controls the drive component 40 to start, so as to drive the slider 20 to slide on the guide rail 10. In some embodiments, the position monitoring component 70 can be a grating ruler component or a laser displacement sensor.

[0065] In some embodiments, multiple upper static pressure chambers 211 are spaced apart along the length of the slider 20 on the upper surface 21 of the slider 20. The first oil supply channel 31 includes a first main flow channel 311 and multiple first branch flow channels 312, each of which is connected to the first main flow channel 311. Each first branch flow channel 312 is connected to each upper static pressure chamber 211 in a corresponding manner. In some embodiments, multiple lower static pressure chambers 221 are spaced apart along the length of the slider 20 on the lower surface 22 of the slider 20. The second oil supply channel 32 includes a second main flow channel 321 and multiple second branch flow channels 322, each of which is connected to the second main flow channel 321. Each second branch flow channel 322 is connected to each lower static pressure chamber 221 in a corresponding manner.

[0066] Specifically, the arrangement of multiple upper static pressure chambers 211 spaced apart along the length of the slider 20 on its upper surface 21, and multiple lower static pressure chambers 221 spaced apart along the length of the slider 20 on its lower surface 22, allows for more uniform force distribution on the slider 20, preventing large overturning forces. Furthermore, the arrangement of each first branch flow channel 312 corresponding to each upper static pressure chamber 211 ensures that the flow rate of hydraulic oil entering each upper static pressure chamber 211 per unit time is almost identical, thus preventing excessive differences in the stiffness of the oil film within each upper static pressure chamber 211. Similarly, the arrangement of each second branch flow channel 322 corresponding to each lower static pressure chamber 221 ensures that the flow rate of hydraulic oil entering each lower static pressure chamber 221 per unit time is almost identical, thus preventing excessive differences in the stiffness of the oil film within each lower static pressure chamber 221.

[0067] It is understandable that the load force exerted by the upper static pressure chamber 211 on the slider 20, and the bearing force exerted by the lower static pressure chamber 221 on the slider 20, are affected by the area of ​​the static pressure chamber and the pressure of the hydraulic oil. If the areas of the upper static pressure chambers 211 are different, this will result in different load forces exerted by each upper static pressure chamber 211 on the slider 20. Similarly, if the areas of the lower static pressure chambers 221 are different, this will result in different bearing forces exerted by each lower static pressure chamber 221 on the slider 20, thus causing uneven force on the slider 20. Therefore, in this embodiment, the areas of the upper static pressure chambers 211 are the same, and optionally, the areas of the lower static pressure chambers 221 are the same. It is understandable that when the oil pressure is constant, when the areas of the static pressure chambers are the same, the external force exerted by the oil film in the static pressure chamber on the slider 20 is the same. When the shapes of the static pressure chambers are different, although the oil film on the static pressure chambers exerts the same external force on the slider 20 macroscopically, the points at which the oil film on the slider 20 exerts the external force are different microscopically, which will still lead to the problem of uneven force on the slider 20. Therefore, in this embodiment, the upper static pressure chambers 211 have the same shape, and the lower static pressure chambers 221 have the same shape.

[0068] Optionally, the depth H1 of the upper static pressure chamber 211 satisfies the relationship 1.5mm≤H1≤2.5mm. Optionally, the depth H2 of the lower static pressure chamber 221 satisfies the relationship 1.5mm≤H2≤2.5mm.

[0069] Specifically, when H1 and H2 satisfy the above relationship, the oil in the first oil supply channel 31 enters the upper static pressure chamber 211 and forms a pressurized oil film within it, preventing rapid oil diffusion that would prevent the oil from applying a load force to the slider 20. Similarly, the oil in the second oil supply channel 32 enters the lower static pressure chamber 221, where a certain depth allows the oil to form a pressurized oil film. Furthermore, the depths of the upper and lower static pressure chambers 211 and 221 are not excessive, thus reducing the resistance to oil entering either chamber. In this embodiment, the values ​​of H1 and H2 can be 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, and 2.5mm.

[0070] In some embodiments, the hydrostatic guide rail 1 further includes a throttling component 50, which is at least disposed within the first oil supply channel 31 and the second oil supply channel 32. The throttling component 50 includes a capillary throttler 51, which can be of various models, each with a different pressure regulation range. Each model of capillary throttler 51 can be selectively and detachably connected within the first oil supply channel 31 and the second oil supply channel 32.

[0071] Specifically, a first opening 33 and a second opening 34 are provided on the outer surface of the support platform 30. The first opening 33 communicates with the first oil supply channel 31, and the second opening 34 communicates with the second oil supply channel 32. The capillary throttle 51 can enter the first oil supply channel 31 or the second oil supply channel 32 through the first opening 33 or the second opening 34. In some embodiments, the hydrostatic guide rail 1 further includes a blocking member 60, which is used to block the first opening 33 and the second opening 34. It is worth mentioning that: "Various models of capillary throttles 51 can be selectively and detachably connected to the first oil supply channel 31 and the second oil supply channel 32" means that among various models of capillary throttles 51, one model of capillary throttle 51 can be installed in the first oil supply channel 31, or one model of capillary throttle 51 can be installed in the second oil supply channel 32, or different or the same model of capillary throttles 51 can be installed in both the first oil supply channel 31 and the second oil supply channel 32 at the same time.

[0072] In this embodiment, the reason for providing multiple models of capillary throttles 51 is to improve the adaptability of the hydrostatic guide rail 1. When using the hydrostatic guide rail 1, operators can install different models of capillary throttles 51 in the first oil supply channel 31 and the second oil supply channel 32, allowing them to adjust the preload of the oil in the upper hydrostatic chamber 211 and the lower hydrostatic chamber 221 as needed. In some embodiments, the different models of capillary throttles 51 may have different lengths or diameters.

[0073] In some embodiments, the throttling component 50 includes a throttling valve electrically connected to a controller, which at least regulates the flow rate of the throttling valve. Specifically, the controller can also regulate the flow rate of the throttling valve, thereby regulating the preload force of the oil in the upper static pressure chamber 211 or the lower static pressure chamber 221. Furthermore, in some embodiments, the throttling component 50 can also be a diaphragm feedback throttling device, which can adaptively change the preload force on the hydraulic oil according to the load.

[0074] On the other hand, this application also provides a turning center that includes the hydrostatic guide 1 in the above embodiments. Therefore, the turning center includes all the technical effects of the hydrostatic guide 1 in the above embodiments. Since the technical effects of the hydrostatic guide 1 have been described in detail above, they will not be repeated here.

[0075] In summary, the hydrostatic guideway and turning center of this application have at least the following beneficial technical effects:

[0076] (1) In this application, a first oil supply channel 31 and a second oil supply channel 32, which are independent of each other, are provided. The first oil supply channel 31 is connected between the upper static pressure chamber 211 and the oil supply mechanism, and the second oil supply channel 32 is connected between the lower static pressure chamber 221 and the oil supply mechanism. When the slider 20 stops moving on the guide rail 10, the oil supply to the lower static pressure chamber 221 is stopped by the oil supply mechanism to lock the slider 20 on the guide rail 10. With the design of this application, no additional braking components are required on the static pressure guide rail, thereby reducing the manufacturing cost of the static pressure guide rail to a certain extent.

[0077] (2) In addition, through the design of the first groove 212, the second groove 222, the third groove 213 and the fourth groove 223, the width of the sealing edge 2112 of each upper static pressure cavity 211 near the first groove 212 is the same, the width of the sealing edge 2112 of each upper static pressure cavity 211 near the third groove 213 is the same, the width of the sealing edge 2112 of each lower static pressure cavity 221 near the second groove 222 is the same, and the width of the sealing edge 2112 of each lower static pressure cavity 221 near the fourth groove 223 is the same, thereby making the external force on the slider 20 more uniform and avoiding excessive overturning force on the slider 20.

[0078] (3) This application sets up a variety of different capillary throttles 51, and the pressure regulation range of each capillary throttle 51 is different. Each capillary throttle 51 can be selectively and detachably set in the first oil supply channel 31 and the second oil supply channel 32 to improve the adaptability of the hydrostatic guide rail.

[0079] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0080] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0081] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hydrostatic guide rail, characterized in that, include: Guide rail (10); A slider (20) is slidably disposed on the guide rail (10). The top of the slider (20) and the guide rail (10) have an upper static pressure cavity (211), and the bottom of the slider (20) and the guide rail (10) have a lower static pressure cavity (221). A support platform (30) is fixed to the top of the slider (20). The support platform (30) has a first oil supply channel (31) and a second oil supply channel (32) that are independent of each other. The first oil supply channel (31) is connected to the upper static pressure chamber (211), and the second oil supply channel (32) is connected to the lower static pressure chamber (221). The oil supply mechanism is connected to both the first oil supply channel (31) and the second oil supply channel (32).

2. The hydrostatic guide rail according to claim 1, characterized in that, The upper surface (21) of the slider (20) is provided with the upper static pressure chamber (211), and the upper oil supply channel (201) is provided inside the slider (20). The first oil supply channel (31) is connected to the upper static pressure chamber (211) through the upper oil supply channel (201); and / or, The lower surface (22) of the slider (20) has the lower static pressure chamber (221), and the slider (20) has a lower oil supply channel (202). The second oil supply channel (32) communicates with the lower static pressure chamber (221) through the lower oil supply channel (202); and / or, A limiting groove (101) is provided on the guide rail (10). The slider (20) is slidably disposed in the limiting groove (101). A side static pressure cavity (231) is provided on the side of the slider (20) near the side wall of the limiting groove (101). A side oil supply channel (203) is provided in the slider (20). The first oil supply channel (31) is connected to the side static pressure cavity (231) through the side oil supply channel (203).

3. The hydrostatic guide rail according to claim 1, characterized in that, The upper surface (21) of the slider (20) is provided with a first groove (212), the first groove (212) extending along the length direction of the slider (20), the upper static pressure cavity (211) having a first sidewall (2111) on the side near the first groove (212), the extension direction of the first sidewall (2111) being parallel to the extension direction of the first groove (212), and the vertical distance from each of the first sidewalls (2111) to the first groove (212) being the same; and / or, The lower surface (22) of the slider (20) is provided with a second groove (222), the second groove (222) extends along the length direction of the slider (20), the lower static pressure cavity (221) has a second sidewall (2211) on the side near the second groove (222), the extension direction of the second sidewall (2211) is parallel to the extension direction of the second groove (222), and the vertical distance from each second sidewall (2211) to the second groove (222) is the same.

4. The hydrostatic guide rail according to claim 3, characterized in that, The upper static pressure chamber (211) includes multiple chambers, which are spaced apart along the length of the slider (20). Each upper static pressure chamber (211) is located on the same side away from the first groove (212). The upper surface (21) of the slider (20) has a third groove (213) that extends along the width of the slider (20). The third groove (213) communicates with the first groove (212) and is located between two adjacent lower static pressure chambers (221). The vertical distance from the midpoint of the third groove (213) along the length of the slider (20) to the sidewall of the two adjacent lower static pressure chambers (221) is the same; and / or, The lower static pressure chamber (221) includes multiple chambers, which are spaced apart along the length of the slider (20). Each lower static pressure chamber (221) is located on the same side away from the second groove (222). The lower surface (22) of the slider (20) has a fourth groove (223), which extends along the width of the slider (20). The fourth groove (223) communicates with the second groove (222) and is located between two adjacent upper static pressure chambers (211). The vertical distance from the midpoint of the fourth groove (223) along the length of the slider (20) to the sidewall of the two adjacent upper static pressure chambers (211) is the same.

5. The hydrostatic guide rail according to claim 1, characterized in that, The bottom of the support platform (30) is provided with a mounting groove (301). The hydrostatic guide rail also includes a drive assembly (40). The drive assembly (40) is disposed between the support platform (30) and the guide rail (10), and the drive assembly (40) is fixed to the mounting groove (301).

6. The hydrostatic guide rail according to claim 5, characterized in that, The hydrostatic guide rail further includes a control mechanism, which includes: A position monitoring component (70) is disposed on the guide rail (10) and / or the support platform (30), and the position monitoring component (70) is used at least to monitor the position of the support platform (30) on the guide rail (10); The controller is electrically connected to the position monitoring component (70), the drive component (40) and the oil supply mechanism. The controller is used at least to control the oil supply mechanism and the drive component (40) based on the signal transmitted by the position monitoring component (70).

7. The hydrostatic guide rail according to any one of claims 1 to 3, characterized in that, The upper static pressure chamber (211) includes multiple chambers, which are spaced apart along the length of the slider (20) on the upper surface (21) of the slider (20). The first oil supply channel (31) includes a first main flow channel (311) and multiple first branch flow channels (312) that are all connected to the first main flow channel (311). Each first branch flow channel (312) is connected to each upper static pressure chamber (211) in a corresponding manner; and / or, The lower static pressure chamber (221) includes multiple chambers, which are spaced apart along the length of the slider (20) on the lower surface (22) of the slider (20). The second oil supply channel (32) includes a second main flow channel (321) and multiple second branch flow channels (322) that are all connected to the second main flow channel (321). Each second branch flow channel (322) is connected to each lower static pressure chamber (221) in a corresponding manner.

8. The hydrostatic guide rail according to claim 7, characterized in that, All of the aforementioned upper static pressure cavities (211) have the same area and shape; and / or, All of the lower static pressure cavities (221) described herein have the same area and shape; and / or, The depth H1 of the upper static pressure chamber (211) satisfies the relationship 1.5mm ≤ H1 ≤ 2.5mm; and / or, The depth H2 of the lower static pressure chamber (221) satisfies the relationship 1.5mm≤H2≤2.5mm.

9. The hydrostatic guide rail according to any one of claims 1 to 5, characterized in that, The hydrostatic guide rail further includes a throttling component (50), which is at least disposed within the first oil supply channel (31) and the second oil supply channel (32); wherein the throttling component (50) includes a capillary throttler (51), which includes various models of capillary throttlers (51), each model having a different pressure regulating range, and each model of capillary throttler (51) can be selectively and detachably connected within the first oil supply channel (31) and the second oil supply channel (32); and / or, The throttling component (50) includes a throttling valve and a controller, the throttling valve being electrically connected to the controller, the controller being used at least to regulate the flow rate of the throttling valve.

10. A turning center, characterized in that, The turning center includes the hydrostatic guide rail as described in any one of claims 1 to 9.

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