Hydrostatic pressure guide rail of numerical control grinding machine

Abstract

The hydrostatic pressure guide rail of the numerical control grinding machine comprises a guide rail body, the guide rail body comprises a sliding seat and a sliding block connected to the sliding seat in a sliding mode, a gap exists between the sliding block and the sliding seat, and an oil injection groove is formed in the guide rail body. An oil injection groove is formed in the sliding block, the oil injection groove is communicated with a gap between the sliding block and the sliding seat, the oil injection groove is suitable for introducing lubricating liquid, auxiliary assemblies are arranged on the two sides of the sliding block respectively, located above the oil injection groove and suitable for making contact with the lubricating liquid in the oil injection groove, and each auxiliary assembly comprises an extension plate; the extension plate comprises a shielding part and a shunting part, the shunting part comprises an arc-shaped surface, an inclined surface and a bottom surface, the upper end part of the arc-shaped surface is connected with the shielding part, and the lower end part of the arc-shaped surface is connected with the inclined surface. And abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of numerical control grinding machines, in particular to a hydrostatic guide rail of a numerical control grinding machine. Background Art

[0002] At present, in CNC grinding machines, hydrostatic guide rails are a common precision guiding component. They achieve pure liquid friction by using pressurized lubricating oil to form a load-bearing oil film, and have the advantages of good vibration resistance and low friction coefficient. However, in the existing technology, there is a problem with hydrostatic guide rails, that is, the contact area between the oil and the slider is relatively small.

[0003] A search of the Chinese utility model patent with authorization publication number CN219755111U discloses a hydrostatic guideway for a CNC grinding machine. This patent uses rollers rolling in the guideway grooves and baffle slides instead of sliding, thereby reducing the requirements for lubricating oil cleanliness. However, due to the limited contact area, the supporting force of the oil film on the slider gradually decreases over time. This situation is caused by various factors, such as the compressibility of the oil, changes in the guideway gap, the influence of the slideway quality, and the dynamic viscosity of the oil. Specifically, when the oil is compressed, its volume changes, which affects the thickness and supporting force of the oil film. In addition, changes in the guideway gap can also cause oil film instability, which in turn affects the supporting force. At the same time, the quality of the slideway and the dynamic viscosity of the oil also affect the supporting force. Over long-term use, due to factors such as friction and wear, the contact area between the oil and the slider will further decrease, resulting in a continuous decline in supporting force. This will not only affect the machining accuracy and stability of the CNC grinding machine, but also have an adverse effect on the overall performance of the machine tool. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art by arranging auxiliary components to increase the contact area between the slider and the lubricating liquid, thereby ensuring the gap between the slider and the sliding seat and reducing wear.

[0005] In order to solve the above technical problems, the technical solution of the utility model is a hydrostatic guide rail for a CNC grinding machine, comprising:

[0006] A guide rail body, the guide rail body including a slide seat;

[0007] a slider slidably connected to the slide seat, a gap being formed between the slider and the slide seat, an oil filling groove being formed in the guide rail body, the oil filling groove being in communication with the gap between the slider and the slide seat, and the oil filling groove being suitable for admitting lubricating liquid;

[0008] Auxiliary components are respectively provided on both sides of the slider, the auxiliary components are located above the oil filling groove, and the auxiliary components are suitable for contacting the lubricating liquid in the oil filling groove;

[0009] The auxiliary component includes an extension plate, the extension plate includes a shielding portion and a diverter portion, the diverter portion includes a curved surface, an inclined surface, and a bottom surface, the upper end of the curved surface is connected to the shielding portion, the lower end of the curved surface is connected to the inclined surface, and the inclined surface is connected to the bottom surface;

[0010] The shielding portion floats on the top of the lubricating liquid in the oil filling tank, and the lower surface of the shielding portion is flush with the liquid level of the lubricating liquid;

[0011] When the extension plate follows the slider to move on the slide seat, part of the lubricating liquid flows along the arc surface to the lower surface of the shielding portion, and another part of the lubricating liquid flows along the arc surface to the inclined surface to the bottom of the bottom surface.

[0012] Furthermore, the guide rail body includes guide rail sides arranged on both sides of the oil filling groove, and a guide rail outer groove is opened in the guide rail side, and the guide rail outer groove is communicated with the oil filling groove;

[0013] The auxiliary component further comprises a roller, which is rotatably mounted in the outer groove of the guide rail and is rotatably connected to the extension plate.

[0014] Furthermore, a V-shaped groove is provided on the roller, and the V-shaped groove is communicated with the outer groove of the guide rail.

[0015] Furthermore, heat dissipation grooves are provided on both sides of the slider.

[0016] Furthermore, a plurality of support columns are arranged at intervals in the heat dissipation slot.

[0017] Furthermore, the hydrostatic guide rail further comprises a drive assembly, which comprises side plates connected to both sides of the guide rail body, a drive motor and a threaded rod;

[0018] The driving motor is mounted on one of the side plates, the threaded rod is rotatably mounted between the two side plates, and the driving motor is connected to the threaded rod to drive the threaded rod to rotate between the two side plates;

[0019] The slider is assembled on the outside of the threaded rod, and the threaded rod is suitable for being driven to rotate so as to drive the slider to move on the sliding seat.

[0020] Furthermore, at least one guide rod is fixedly connected between the two side plates, a circular hole is opened in the slider penetrating the slider, and the guide rod passes through the inside of the circular hole.

[0021] By adopting the above technical solution, the utility model has the following beneficial effects:

[0022] 1. By setting up the extension plate and roller and other structures, the extension plate is connected to the roller, the extension plate contacts the lubricating liquid in the oil filling groove, and the roller contacts the lubricating liquid in the outer groove of the guide rail, thereby increasing the contact area with the lubricating liquid to improve the supporting force of the lubricating liquid on the slider, thereby avoiding the increase of friction due to too small supporting force between the slide and the slider.

[0023] 2. By setting structures such as the V-groove on the roller and the inclined surface on the extension plate, the V-groove further increases the contact area between the roller and the lubricating liquid in the outer groove of the guide rail. The setting of the inclined surface on the extension plate can enable the extension plate to drive the lubricating liquid downward when moving with the slider, further obtaining upward supporting force, achieving a better overall supporting effect, and reducing wear between the slider and the slide seat.

[0024] 3. Through the setting of structures such as heat dissipation grooves and support columns, the heat dissipation grooves opened at the main contact parts of the slider and the slide seat can guide the lubricating liquid into the interior, better dissipate heat at the contact parts, and improve the overall service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a planar schematic diagram of the cooperation between the slider and the slide seat of the utility model;

[0027] Figure 3 This is a schematic diagram of the overall structure of the slider of the utility model;

[0028] Figure 4 This is a schematic diagram of the auxiliary component structure of the utility model;

[0029] Figure 5 This is a schematic structural diagram of the heat dissipation slot of the present utility model.

[0030] In the figure: 1, guide rail body; 11, slide; 12, guide rail side; 13, oil filling groove; 14, guide rail outer groove;

[0031] 2. Slider;

[0032] 3. Auxiliary component; 31. Extension plate; 311. Shielding portion; 312. Arc surface; 313. Inclined surface; 32. Roller; 321. V-shaped groove;

[0033] 4. Heat sink; 41. Support column;

[0034] 5. Drive assembly; 51. Side plate; 52. Drive motor; 53. Threaded rod; 54. Guide rod. DETAILED DESCRIPTION

[0035] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0036] Example 1

[0037] like Figure 1-3 As shown, a hydrostatic guide rail of a CNC grinding machine comprises:

[0038] The guide rail body 1 includes a slide seat 11;

[0039] The slider 2 is slidably connected to the slide seat 11. There is a gap between the slider 2 and the slide seat 11. An oil filling groove 13 is opened in the guide rail body 1. The oil filling groove 13 is communicated with the gap between the slider 2 and the slide seat 11. The oil filling groove 13 is suitable for passing lubricating liquid; wherein,

[0040] Auxiliary components 3 are respectively provided on both sides of the slider 2. The auxiliary components 3 are located above the oil filling groove 13. The auxiliary components 3 are suitable for contacting the lubricating liquid in the oil filling groove 13.

[0041] The auxiliary component 3 includes an extension plate 31, which includes a shielding portion 311 and a diverter portion. The diverter portion includes a curved surface 312, an inclined surface 313, and a bottom surface. The upper end of the curved surface 312 is connected to the shielding portion 311, and the lower end of the curved surface 312 is connected to the inclined surface 313. The inclined surface 313 is connected to the bottom surface.

[0042] The shielding portion 311 floats on the top of the lubricating liquid in the oil filling tank 13, and the lower surface of the shielding portion 311 is flush with the liquid level of the lubricating liquid;

[0043] When the extension plate 31 follows the slider 2 to move on the slide 11 , part of the lubricating liquid flows along the arc surface 312 to the lower surface of the shielding portion 311 , and the other part of the lubricating liquid flows along the arc surface 312 to the inclined surface 312 to the bottom of the bottom surface.

[0044] like Figure 2 As shown, the guide rail body 1 includes a guide rail side 12 arranged on both sides of the oil filling groove 13, and a guide rail outer groove 14 is opened in the guide rail side 12, and the guide rail outer groove 14 is communicated with the oil filling groove 13;

[0045] The auxiliary component 3 further includes a roller 32 , which is rotatably mounted in the outer groove 14 of the guide rail and is rotatably connected to the extension plate 31 .

[0046] like Figure 4 As shown, a V-shaped groove 321 is formed on the roller 32 , and the V-shaped groove 321 is communicated with the outer groove 14 of the guide rail.

[0047] The working principle of this embodiment is as follows:

[0048] First, dock the slider 2 with the slide 11. This can be done by inserting from one side. After docking, oil is injected into the guide rail outer groove 14 and the oil filling groove 13 to form an oil film between the slide 11 and the slider 2, between the oil filling groove 13 and the extension plate 31, and between the oil filling outer groove and the roller 32. The oil film and the oil exert a supporting force on the above components, thereby preventing direct contact between the slider 2 and the slide 11, thereby reducing friction and increasing service life.

[0049] The roller 32 rotates in the outer groove 14 of the guide rail when following the movement of the slider 2, playing a certain guiding role, making the linear movement of the slider 2 more stable;

[0050] The roller 32 and the extension plate 31 can both increase the contact area between the slider 2 and the oil. By increasing the contact area, a greater supporting force is obtained to ensure that the gap between the slider 2 and the slide seat 11 does not become smaller and smaller during long-term use, thereby preventing excessive wear and damage to the equipment.

[0051] On this basis, a V-shaped groove 321 is opened on the roller 32, and the V-shaped groove 321 can provide more oil to contact with the roller 32 body, further increasing the contact area;

[0052] The extension plate 31 is divided into a shielding portion 311, a curved surface 312, and an inclined surface 313. The oil injected into the oil filling groove 13 floats on the bottom surface of the shielding portion 311 and submerges the curved surface 312 and the inclined surface 313. When the extension plate 31 moves with the slider 2, the curved surface 312 squeezes the oil. Part of the squeezed oil flows along the curved surface 312 and across the inclined surface 313, flowing downward. This generates an upward reaction force that slightly lifts the extension plate 31 as a whole, ensuring sufficient support for the slider 2.

[0053] It should be noted that due to the restrictions of the outer groove 14 of the guide rail and the roller 32, the upward lifting support force obtained by the inclined surface 313 will not cause the slider 2 to derail.

[0054] Example 2

[0055] like Figure 5 As shown, heat dissipation grooves 4 are provided on both sides of the slider 2 .

[0056] like Figure 5 As shown, a plurality of support columns 41 are arranged at intervals in the heat dissipation slot 4 .

[0057] like Figure 1 As shown, the hydrostatic guide rail further includes a drive assembly 5, which includes side plates 51 connected to both sides of the guide rail body 1, a drive motor 52 and a threaded rod 53;

[0058] The drive motor 52 is mounted on one of the side plates 51 , and the threaded rod 53 is rotatably mounted between the two side plates 51 . The drive motor 52 is connected to the threaded rod 53 to drive the threaded rod 53 to rotate between the two side plates 51 .

[0059] The slider 2 is assembled on the outside of the threaded rod 53 , and the threaded rod 53 is suitable for being driven to rotate so as to drive the slider 2 to move on the slide 11 .

[0060] like Figure 1 As shown, at least one guide rod 54 is fixedly connected between the two side plates 51 , a circular hole is opened in the slider 2 and passes through the slider 2 , and the guide rod 54 passes through the inside of the circular hole.

[0061] The working principle of this embodiment is as follows:

[0062] If the oil film is not properly maintained during long-term use, the friction between the slider 2 and the slide seat 11 will increase, resulting in a local temperature increase and the slider 2 may become stuck when moving on the slide seat 11. Therefore, heat dissipation treatment is required for the contact portion between the slider 2 and the slide seat 11.

[0063] The heat dissipation groove 4 allows some oil to enter, making the contact surface between the liquid and the slider 2 and the slide seat 11 closer, thereby taking away some heat and achieving the heat dissipation effect. At the same time, a plurality of spaced support columns 41 are arranged in the heat dissipation groove 4 to stabilize the structure of the slider 2.

[0064] The movement of the slider 2 as a whole on the slide 11 is mainly driven by the drive motor 52, which drives the threaded rod 53 to rotate. The threaded rod 53 and the slider 2 can be assembled in the form of a ball 51 nut, so that the slider 2 can move linearly on the slide 11 after the threaded rod 53 rotates. This part is the existing technology and will not be described in detail here.

[0065] On this basis, a guide rod 54 is provided. The slider 2 also slides outside the guide rod 54 during the movement. The guide rod 54 plays a guiding and supporting role, making the linear movement of the slider 2 more stable.

[0066] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydrostatic guide rail for a CNC grinding machine, characterized in that: include: A guide rail body (1), wherein the guide rail body (1) comprises a slide seat (11); A slider (2) is slidably connected to the slide seat (11), a gap exists between the slider (2) and the slide seat (11), an oil filling groove (13) is provided in the guide rail body (1), the oil filling groove (13) is communicated with the gap between the slider (2) and the slide seat (11), and the oil filling groove (13) is suitable for introducing lubricating liquid; wherein: Auxiliary components (3) are respectively provided on both sides of the slider (2), the auxiliary components (3) are located above the oil filling groove (13), and the auxiliary components (3) are suitable for contacting the lubricating liquid in the oil filling groove (13); The auxiliary component (3) comprises an extension plate (31), the extension plate (31) comprises a shielding portion (311) and a diverter portion, the diverter portion comprises an arcuate surface (312), an inclined surface (313) and a bottom surface, the upper end of the arcuate surface (312) is connected to the shielding portion (311), the lower end of the arcuate surface (312) is connected to the inclined surface (313), and the inclined surface (313) is connected to the bottom surface; The shielding portion (311) floats on the top of the lubricating liquid in the oil filling groove (13), and the lower surface of the shielding portion (311) is flush with the liquid surface of the lubricating liquid; When the extension plate (31) follows the slider (2) to move on the slide seat (11), a portion of the lubricating liquid flows along the arc surface (312) toward the lower surface of the shielding portion (311), and another portion of the lubricating liquid flows along the arc surface (312) toward the inclined surface (312) to the bottom of the bottom surface.

2. The hydrostatic guide rail of a CNC grinding machine according to claim 1, characterized in that: The guide rail body (1) comprises guide rail side edges (12) arranged on both sides of the oil filling groove (13); a guide rail outer groove (14) is formed in the guide rail side edges (12); and the guide rail outer groove (14) is communicated with the oil filling groove (13); The auxiliary component (3) further comprises a roller (32), the roller (32) being rotatably mounted in the guide rail outer groove (14), and the roller (32) being rotatably connected to the extension plate (31).

3. The hydrostatic guide rail of a CNC grinding machine according to claim 2, characterized in that: The roller (32) is provided with a V-shaped groove (321), and the V-shaped groove (321) is communicated with the guide rail outer groove (14).

4. The hydrostatic guide rail of a CNC grinding machine according to claim 1, characterized in that: Heat dissipation grooves (4) are provided on both sides of the slider (2).

5. The hydrostatic guide rail of a CNC grinding machine according to claim 4, characterized in that: A plurality of support columns (41) are arranged at intervals in the heat dissipation groove (4).

6. The hydrostatic guide rail of a CNC grinding machine according to claim 1, characterized in that: The hydrostatic guide rail further comprises a drive assembly (5), wherein the drive assembly (5) comprises side plates (51) connected to both sides of the guide rail body (1), a drive motor (52), and a threaded rod (53); The driving motor (52) is mounted on one of the side plates (51), the threaded rod (53) is rotatably mounted between the two side plates (51), and the driving motor (52) is connected to the threaded rod (53) to drive the threaded rod (53) to rotate between the two side plates (51); The slider (2) is assembled on the outside of the threaded rod (53), and the threaded rod (53) is suitable for being driven to rotate so as to drive the slider (2) to move on the slide seat (11).

7. The hydrostatic guide rail of a CNC grinding machine according to claim 6, characterized in that: At least one guide rod (54) is fixedly connected between the two side plates (51), a circular hole penetrating the slider (2) is provided in the slider (2), and the guide rod (54) passes through the inside of the circular hole.

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