TW201905345A - Hydrostatic pressure slider device - Google Patents

Abstract

A hydrostatic sliding block device slides on a sliding rail and includes a sliding block and a capillary throttle device capable of performing adjustment. The sliding block includes a sliding surface facing the sliding rail, an anti-wearing layer formed on the sliding surface and defining a chamber, a throttle channel communicated with the chamber, and a pressure detecting channel communicated with the chamber. The anti-wearing layer is made of an epoxy resin coating material. The capillary throttle device and the throttle channel are able to adjust the capillary length through threads, and work with the pressure detecting channel to obtain a proper throttle parameter. Accordingly, under a situation of insufficient supply of lubrication agent, the sliding rail can be prevented from being damaged through the anti-wearing layer being in contact with the sliding rail, so that the service life of a static bearing module can be greatly prolonged, and the hydraulic pressure inside the chamber can be controlled through directly adjusting the capillary throttle device under a situation of the anti-wearing layer not being seriously damaged, thereby enabling the loading of the sliding block to be stably kept.

Description

Hydrostatic slider device

The invention relates to a slider, in particular to a hydrostatic slider device.

Referring to FIG. 1, a conventional hydrostatic slider 11 slides on a slide rail 12. The slider 11 includes a sliding surface 111 facing the sliding rail 2, an engaging surface 112 opposite to the sliding surface 111 and connected to a worktable (not shown), and an oil cavity 113 formed on the sliding surface 111. And a flow passage 114 formed on the joint surface 112 and communicating with the oil cavity 113 for introducing lubricating oil. As a result, the high-pressure injected lubricating oil will fill the oil rail 113 between the slide rail 12 and the slider 11 to form a layer of oil film, so that the workbench and the slider 11 float through the flowing oil film, and In a frictionless state, linear displacement is smoothly performed along the slide rail 12.

However, if there is a sudden oil cut or insufficient oil pressure during the displacement process, the thickness of the oil film will be reduced or insufficient due to the weight of the aforementioned table, so that the sliding surface 111 of the slider 11 contacts the slide rail 12 As a result, the sliding surface of the slider 1 or the slide rail 12 is damaged.

In addition, it is worth noting that in order to maintain the stability of the oil pressure in the oil cavity 113, the conventional hydrostatic slide 11 will install a throttle (not shown) to improve the aforementioned oil film carrying capacity and oil film rigidity. However, the traditional throttle (not shown) can only maintain a constant throttle according to the setting. Therefore, the oil pressure in the oil chamber 113 cannot be adjusted for mobility.

Therefore, an object of the present invention is to provide a hydrostatic slider device which can be quickly replaced, avoids damage, and maintains a stable load.

Therefore, the hydrostatic slider device of the present invention slides on a slide rail, which includes: a slider and a wool detail flow device.

The slider includes a sliding surface facing the sliding rail, a joining surface opposite to the sliding surface, an abrasion resistant layer formed on the sliding surface, an inlet formed on the engaging surface and used for introducing a lubricant, An outlet, a throttling channel, and a pressure detecting channel formed on the sliding surface and used to release the lubricating fluid. The wear layer is an epoxy-based coating material, and has a surface facing the sliding rail and communicating with A cavity of the outlet, the throttling channel extends along an axis direction, and communicates the inlet and the outlet, and has a communication section adjacent to the inlet and a screwing section far from the inlet. The pressure detection channel is formed by The joint surface extends to the chamber and is used to detect the hydraulic pressure in the chamber.

The hair detail flow device includes a throttle bolt screwed with the screwing section of the throttle channel, and a sealing gasket installed on the throttle bolt and in air-tight contact with the communication section of the throttle channel. The bolt has an end penetrating through the communication section, and a throttle distance is defined between the end and the outlet for the lubricating fluid to flow toward the outlet and shrinks and lengthens with the screwing depth of the screwing section.

The effect of the present invention is that it can contact the slide rail with the wear layer to avoid the track damage under the condition of insufficient supply of the lubricating fluid, and greatly improve the service life of the static pressure bearing module, and the wear layer In the case of not serious damage, the gross detail flow device can be directly adjusted to control the hydraulic pressure in the chamber, so that the load of the slider can be kept stable.

Referring to FIG. 2, FIG. 3, and FIG. 4, an embodiment of the hydrostatic slider device of the present invention slides on a slide rail 2 and carries a worktable 3. The hydrostatic slider device includes a slider 4 and a capillary detail flow device 5.

The slider 4 includes a sliding surface 41 facing the sliding rail 2, a joint surface 42 opposite to the sliding surface 41 and facing the table 3, a wear-resistant layer 43 formed on the sliding surface 41, and formed on the sliding surface 41. An inlet 44 for introducing the lubricating liquid 7 on the joint surface 42, an outlet 45 for releasing the lubricating liquid 7 formed on the sliding surface 41 and communicating with the chamber unit 43, a throttle channel 46, and a pressure detection The channel 47 and a plurality of lock holes 48 extending from the joint surface 42 toward the sliding surface 41.

The abrasion-resistant layer 43 is a polymer resin material with a friction coefficient of less than 0.2, and has a thickness of about 2-4 mm, and has a cavity 431 facing the slide rail 2 and communicating with the outlet 45. The height of the cavity 431 is smaller than the thickness of the wear-resistant layer 43.

The friction coefficient of the wear-resistant layer 43 is about 0.1 to 0.2, and it is an epoxy-based coating material that can be cast in the liquid state and hardened in the air (SKC Gleittechnik GmbH).

In this embodiment, the lubricating fluid 7 is a hydraulic oil.

5 and 6, the orifice 46 extends along an axis X and connects the inlet 44 and the outlet 45, and has a communication section 461 adjacent to the inlet 44 and a screwing section far from the inlet 44. 462.

The pressure detection hole 47 extends from the joint surface 42 to the cavity 431 of the wear-resistant layer 43 and is used to detect the hydraulic pressure in the cavity 431.

The keyholes 48 are used to connect with the workbench 3.

The capillary detail flow device 5 includes a throttle pin 51 and a sealing pad 52 mounted on the throttle pin 51. The throttling bolt 51 has a bolt head section 511 screwed with the screwing section 462 of the throttling channel 45, and a throttling section 512 penetrating the communication section 462 of the throttling channel 46 and facing the outlet 45. . The throttle section 512 has an end 5121 located between the inlet 44 and the outlet 45, and a spiral groove 5122 formed on the outer surface and used to guide the lubricating fluid 7. A throttle distance D is defined between the end 5121 and the outlet 45, and the throttle distance D is reduced and extended according to the screwing depth of the head section 511 of the throttle pin 51 in the screwing section 462. The gasket 52 is in air-tight contact with the communication section 461 of the throttle channel 46.

Referring to FIGS. 2 and 7, when the high-pressure lubricating fluid 7 enters the chamber 431 from the inlet 44 of the slider 4 through the orifice 46, the groove 5122 of the throttle pin 51, and the outlet 45 enters the chamber 431, The lubricating fluid 7 in the chamber 431 will penetrate between the slide rail 2 and the wear layer 43 of the slider 4 to form an oil film, so that the worktable 3 and the slider 4 float through the flowing oil film. A linear displacement can be smoothly made along the slide rail 2 in a frictionless state.

Referring to FIG. 2 and FIG. 8, when the hydraulic pressure of the lubricating liquid 7 is insufficient or interrupted, although the weight of the aforementioned table 3 will be pressed on the oil film, the sliding surface 41 of the slider 4 is closer to the sliding rail 2, but The abrasion-resistant layer 43 on the slider 4 will contact the slide rail 2 first, whereby the abrasion-resistant layer 43 can not only absorb the kinetic energy when the slider 4 is displaced relative to the slide rail 2, but also achieve the effect of shock resistance. More importantly, the wear layer 43 with a lower wear coefficient can also prevent the sliding surface 41 of the slider 4 from directly contacting the slide rail 2, so that the slider 4 or the slide rail 2 will not be damaged. At the same time, the material characteristics can be used to achieve the effect of wear resistance during coasting.

It is worth noting that, since the wear-resistant layer 43 is a polymer resin material, when the weight of the workbench 3 is pressed on the slider 4, the wear-resistant layer 43 will be slightly deformed, causing the cavity The hydraulic pressure in 431 changes. In order to maintain the hydraulic pressure in the chamber 431 with the same throttling parameters, it is only necessary to screw in or back out the throttling bolt 51 and change the screwing depth with the screwing section 462, which can be adjusted. The length of the throttling distance D between the end 5121 of the throttling pin 51 and the outlet 45 can extend or shorten the lubricating fluid 7 from the groove 5122 on the throttling section 512 of the throttling pin 51 into the outlet 45. The capillary length achieves the purpose of changing the hydraulic pressure in the chamber 431.

In addition, it is detected whether the hydraulic pressure in the chamber 431 is the same as the throttling parameter, and the hydraulic pressure in the chamber 431 can be detected by directly or indirectly communicating the pressure detection hole 47 with a pressure detection device (not shown). Since those with ordinary knowledge in the art can infer the extended details based on the above description, they will not be described further.

When the worker finds that the wear-resistant layer 43 is worn or severely damaged, he can remove the slider 4 from the workbench 3, and then scrape off the remaining wear-resistant layer 43 on the slider 4, and Through a jig 8 shown in FIG. 9, the wear-resistant layer 6 is formed by pouring between the jig 8 and the sliding surface 41 of the slider 4.

Through the above description, the advantages of the foregoing embodiments can be summarized as follows:

1. The present invention can prevent the slider 4 from being damaged by the wear layer 43 in contact with the slide rail 2 under the condition that the lubrication liquid 7 is insufficiently supplied or the hydraulic pressure is insufficient, and the slider 4 or the slide rail 2 is greatly improved. Life.

2. And in accordance with the setting of the abrasion-resistant layer 43, the present invention only needs to control the throttling distance D of the throttling pin 51 of the capillary detail flow device 5 to adjust the capillary length, and cooperate with the pressure detection hole 47 to obtain a suitable The throttle parameter enables the load of the slider 4 to be kept stable.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, any simple equivalent changes and modifications made according to the scope of the patent application and the contents of the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧ rail

3‧‧‧Workbench

4‧‧‧ slider

41‧‧‧ taxiing surface

42‧‧‧Joint surface

43‧‧‧Abrasion resistant layer

431‧‧‧chamber

44‧‧‧ Entrance

45‧‧‧Exit

46‧‧‧throttle channel

461‧‧‧connected section

462‧‧‧Screw section

47‧‧‧Pressure detection hole

48‧‧‧ keyhole

5‧‧‧hair detail flow device

51‧‧‧throttle plug

511‧‧‧ head

512‧‧‧throttling section

5121‧‧‧End

5122‧‧‧Groove

52‧‧‧Gasket

7‧‧‧lubricant

8‧‧‧ jig

X‧‧‧ axis

D‧‧‧throttle distance

Other features and effects of the present invention will be clearly presented in the embodiment with reference to the drawings, in which: FIG. 1 is a schematic cross-sectional view illustrating a conventional hydrostatic slider; FIG. 2 is a cross-sectional view A schematic diagram illustrating an embodiment of the hydrostatic slider device of the present invention sliding on a slide rail and carrying a workbench; FIG. 3 is a perspective view of the embodiment; FIG. 4 is a bottom view of the embodiment; Fig. 5 is a cross-sectional view taken along line IV-IV in Fig. 4; Fig. 6 is a cross-sectional view similar to Fig. 5, but illustrating a gross detail flow adjustment of a screwing stroke; Fig. 7 is a partially enlarged view A schematic cross-sectional view illustrating that an oil film is formed between the embodiment and the slide rail; FIG. 8 is a partially enlarged cross-sectional schematic view illustrating that a wear-resistant layer in the embodiment is in contact with the slide rail; and FIG. 9 is A schematic cross-sectional view illustrating another aspect of the abrasion-resistant layer in this embodiment and the forming method thereof.

Claims (5)

A hydrostatic slider device glides on a slide rail. The hydrostatic slider device includes: a slider including a sliding surface facing the sliding rail, a joint surface opposite to the sliding surface, and An abrasion-resistant layer on the sliding surface, an inlet formed on the joint surface for introducing the lubricating liquid, an outlet formed on the sliding surface and releasing the lubricating liquid, a throttle channel, and a pressure detection channel The wear-resistant layer is an epoxy-based coating material and has a cavity facing the slide rail and communicating with the outlet. The throttle channel extends along an axis direction, and connects the inlet and the outlet, and Having a communicating section adjacent to the inlet and a screwing section remote from the inlet, the pressure detection hole extends from the joint surface to the chamber and is used to detect the hydraulic pressure in the chamber; and a wool detail flow device, It includes a throttling bolt screwed with the screwing section of the throttling channel, and a gasket installed on the throttling bolt and in air-tight contact with the communicating section of the throttling channel. The connected segment A tip that between the outlet and defining a fluid for lubricating and flow toward the outlet as the threaded section of the threaded engagement depth of contraction, a length of the discharge orifice distance. The hydrostatic slider device according to claim 1, wherein the throttling bolt further has a bolt head section screwed with the screwing section of the throttling channel, and a communication section penetrating into the throttling channel A throttling section having the end and a groove formed on the outer surface and used to guide the lubricating fluid. The hydrostatic slider device according to claim 1, wherein the slider further includes a plurality of keyholes extending from the joint surface toward the sliding surface. The hydrostatic slider device according to claim 1, wherein the thickness of the wear-resistant layer is 2-4 mm. The hydrostatic slider device according to claim 1, wherein a height of a cavity of the wear-resistant layer is smaller than a thickness of the wear-resistant layer.