CN221248240U

CN221248240U - Large-scale planer grinder hydrostatic guideway system

Info

Publication number: CN221248240U
Application number: CN202322980250.3U
Authority: CN
Inventors: 崔家龙
Original assignee: Yongchang Intelligent Equipment Nantong Co ltd
Current assignee: Yongchang Intelligent Equipment Nantong Co ltd
Priority date: 2023-11-03
Filing date: 2023-11-03
Publication date: 2024-07-02
Anticipated expiration: 2033-11-03

Abstract

The utility model relates to the technical field of gantry machining centers, in particular to a large-scale gantry mill hydrostatic guideway system, which comprises a hydrostatic guideway, a valve group and a hydrostatic station; the hydrostatic guideway is internally provided with a plurality of hydrostatic cavities; the valve group comprises a plurality of speed regulating valve devices communicated with the static pressure cavity, wherein the speed regulating valve devices are provided with multiple paths of interfaces and are connected with a plurality of pipelines formed by series-parallel connection; the static pressure station is connected with the valve group and is used for returning oil to the static pressure cavity. The utility model adopts the speed regulating valve device, is communicated with the static pressure cavity in the static pressure guide rail through a plurality of pipelines formed in series-parallel connection and is connected with the static pressure station, thereby realizing the oil way control of the whole system and effectively reducing the quantity of control oil ways; meanwhile, the pressure inside the static pressure cavity is guaranteed to be equal everywhere, and a static pressure working mode of balanced control is realized; and the control of the floating amount is realized, the floating amount is constant under the condition of the load change of the workbench, and the precision requirement and the service life are met.

Description

Large-scale planer grinder hydrostatic guideway system

Technical Field

The utility model relates to the technical field of gantry machining centers, in particular to a large-scale gantry mill hydrostatic guideway system.

Background

In the existing gantry system, a sliding guide rail which is completely contacted is adopted between a lathe bed and a workbench, and a constant flow adjusting device is adopted in a traditional method about the oil way design in the guide rail, as shown in figure 1, the gantry system consists of a static pressure station 2 and a valve group 2, wherein the static pressure station 2 comprises an oil tank 21, an oil absorption filter 22, a PV-FZD variable vane pump 23a and a combined valve block 24a; the combined valve block 24a is provided with a P-B25B first overflow valve 241a, a damping pressure gauge 242a, a WU-C100 x 50 coarse filter 243a, a WU-C100 x 20 fine filter 244a and a pressure relay 245a; the valve group 3 consists of a multi-connected constant flow regulator 31.

For a large-sized 16-meter gantry mill hydrostatic guideway, the hydrostatic cavities are doubled, the number of the original 8-meter gantry mill hydrostatic cavities is 10, the number of the 16-meter gantry mill hydrostatic guideway hydrostatic cavities is up to 20, and the reduction of the number of constant flow control oil ways is particularly important, so that the utility model develops a large-sized gantry mill hydrostatic guideway system to solve the problems in the prior art.

Disclosure of utility model

The utility model aims at: the hydrostatic guideway system of the large gantry mill is used for reducing control oil ways and avoiding adopting multi-connected assembled constant flow regulators.

The technical scheme of the utility model is as follows: a large gantry mill hydrostatic guideway system comprising:

the hydrostatic guideway is internally provided with a plurality of hydrostatic cavities;

the valve group comprises a plurality of speed regulating valve devices communicated with the static pressure cavity, wherein the speed regulating valve devices are provided with multiple paths of interfaces and are connected with a plurality of pipelines formed by series-parallel connection;

and the static pressure station is connected with the valve group and used for returning oil to the static pressure cavity.

Preferably, the speed regulating valve device adopts a three-way speed regulating valve, and further the three-way speed regulating valve is correspondingly provided with three ways of interfaces, wherein two ways of interfaces are used for respectively connecting parallel pipelines, and one way of interfaces is used for connecting serial pipelines.

Preferably, in the length direction of the hydrostatic guideway, the hydrostatic cavities communicated by the serial pipelines are positioned in the middle of the hydrostatic guideway, and the hydrostatic cavities communicated by the parallel pipelines are respectively arranged at two sides of the hydrostatic guideway.

Preferably, the hydrostatic guideway comprises flat rails and/or V rails;

an unloading groove is formed in the middle of the flat rail along the length direction, the static pressure cavities are distributed on two sides of the unloading groove, and the two static pressure cavities on the same section are communicated;

Static pressure cavities are also distributed on two sides of the V-shaped rail, and the two static pressure cavities on the same section are communicated.

Preferably, the parallel pipeline is used for connecting two paths of through hydrostatic cavities in parallel to form one path; the series pipeline is directly communicated with a through hydrostatic cavity.

Preferably, the static pressure station comprises an oil tank, an oil suction filter, a variable vane pump and a combined valve block; the combined valve block comprises an overflow valve, a damping pressure gauge, a filter with magnetism and a pressure relay; the filter can be arranged in a single or a plurality of filters in series; and returning oil to the oil tank through the static pressure cavity.

Preferably, the speed regulating valve device is internally provided with regulating members corresponding to the number of the interfaces; the adjusting component comprises an adjustable throttle valve, a constant pressure difference mechanism and a pressure display device;

An adjustable throttle valve mounted within the valve body and comprising a valve stem member, an adjustment member, and a first reset member;

the constant pressure difference mechanism is arranged in the valve body and comprises a sliding rod member and a second reset member;

the pressure display device comprises a pressure measuring joint, a pressure measuring hose and a pressure gauge.

Preferably, a valve body channel, a valve front pressure cavity, a valve rear pressure cavity and an oil outlet cavity are formed in the valve body;

a through hole is arranged between the valve front pressure cavity and the valve rear pressure cavity, the end part of the valve rod component is provided with a conical head part, and an adjustable first throttling hole is formed based on the depth of the head part inserted into the through hole;

the sliding rod member is provided with an outer wall surface with the same outline as the inlet end of the oil outlet cavity, and an adjustable second throttling hole is formed based on the size of a covering surface of the outer wall surface covering the inlet end of the oil outlet cavity.

Preferably, the valve rod member comprises a needle valve body and a screw cap needle valve; the screw cap needle valve is fixed on the valve body in a sealing way, and the needle valve body is inserted into the inner side end of the screw cap needle valve;

the adjusting member comprises an adjusting screw and a locking nut, and the adjusting screw is in threaded connection with the screw cap needle valve;

The first reset component adopts a first reset spring and is sleeved at one end of the needle valve body far away from the adjusting screw, so that the needle valve body is always abutted against the adjusting screw;

The sliding rod component comprises a sliding valve, a sliding seat and a plug; the plug is fixed on the valve body in a sealing way;

The second reset component adopts a second reset spring and is sleeved on the sliding seat, so that the sliding seat and the sliding valve are always propped against each other;

The pressure display device is communicated with the oil outlet cavity, feeds back the pressure of the static pressure cavity, and synchronously feeds back the floating amount of the static pressure cavity.

Based on a large-scale portal mill hydrostatic guideway system, the utility model also discloses the speed regulating valve device.

Compared with the prior art, the utility model has the advantages that:

(1) The speed regulating valve device is adopted, and the speed regulating valve device is communicated with the hydrostatic cavities in the hydrostatic guideway through a plurality of pipelines formed in series-parallel connection and is connected with the hydrostatic station, so that the oil way control of the whole system is realized, the number of control oil ways can be effectively reduced, and the speed regulating valve device has wide application prospect for large gantry systems with a plurality of hydrostatic cavities.

(2) The three-connection speed regulating valve is adopted to control the oil way, so that the pressure in the static pressure cavity is equal everywhere, and a static pressure working mode of balanced control is realized; meanwhile, a plurality of triple speed regulating valves form an adjustable valve group, so that the floating quantity of the large-scale gantry mill hydrostatic guideway system is controlled, the floating quantity is constant under the condition of load change of a workbench, and the precision requirement and the service life are met.

(3) The adjustable throttle valve and the constant pressure difference mechanism are adopted to realize multistage constant adjustment of flow, the self-adaptive function is realized in the fluid circulation process, the functions of adjusting pressure difference, throttling control and pressure feedback can be reasonably met based on the distribution of internal flow channels, and the whole structural design is flexible, compact and ingenious.

Drawings

The utility model is further described below with reference to the accompanying drawings and examples:

FIG. 1 is a block diagram of a valve block and a static pressure station of the prior art;

FIG. 2 is a block diagram of a valve block and a hydrostatic station in a large-scale portal mill hydrostatic guideway system according to the present utility model;

FIG. 3 is a diagram of an oil path formed by the three-way speed regulating valve applied to a 16m gantry grinding flat and a V-rail hydrostatic cavity;

FIG. 4 is a block diagram of a triple speed valve according to the present utility model;

Fig. 5 is A-A view of the triple speed valve of the present utility model.

Wherein: 1. a hydrostatic guideway;

11. flat rail, 12, V rail, 13, static pressure cavity, 14, parallel pipeline, 15, series pipeline;

2. a static pressure station;

21. The hydraulic oil tank comprises an oil tank body (22), an oil suction filter body (23 a/23 b), a variable vane pump body (24 a/24 b), a combined valve block body (241 a/241 b), an overflow valve body (242 a/242 b), a damping pressure gauge, 243a, a coarse filter body (244 a), a fine filter body (243 b), a filter body with magnetism, 245a/245b and a pressure relay;

3. A valve group;

31. A multi-connected constant flow regulator, 32 and a three-connected speed regulating valve;

41. a valve body;

42. An adjustable throttle valve;

421. A valve stem member, 4211, a needle valve body, 4212, a screw cap needle valve;

422. An adjustment member, 4221, an adjustment screw, 4222, a lock nut;

423. a first return member, 4231, a first return spring;

43. A constant pressure difference mechanism;

431. Slide bar component 4311, slide valve 4312, slide seat 4313 and plug;

432. a second return member 4321, a second return spring;

44. A pressure display device;

441. Pressure measuring joints 442, pressure measuring hoses 443, pressure gauges;

45. a pre-valve pressure chamber;

451. Valve body channels 452, oil inlet cavities 453, horizontal channels 454, vertical channels 455, first cavities;

46. a post-valve pressure chamber;

461. Through holes 462, first throttle holes 463, second cavities;

47. an oil outlet cavity 471, a second orifice;

48. A horizontal oil duct.

Detailed Description

The following describes the present utility model in further detail with reference to specific examples:

As shown in fig. 2 and 3, a large-scale portal mill hydrostatic guideway system comprises a hydrostatic guideway 1, a valve group 3 and a hydrostatic station 2.

Hydrostatic guideway 1 includes flat rail 11, V rail 12, and has hydrostatic cavity 13 therein. For a large-sized 16m gantry mill hydrostatic guideway system, the number of hydrostatic cavities is doubled, and the number of the hydrostatic cavities of the original 8m gantry mill hydrostatic guideway system reaches 10 cavities, so that the number of the hydrostatic cavities of the 16m gantry mill hydrostatic guideway system reaches 20.

For a 16m gantry mill flat rail, in order to increase the leakage side length of the static pressure cavity, an unloading groove is formed in the middle of the flat rail along the length direction, the static pressure cavities are distributed on two sides of the unloading groove, and two static pressure cavities on the same section are communicated, so that the static pressure cavities become 10 through type static pressure cavities.

For a V-shaped double-sided hydrostatic cavity of a 90-degree V-shaped double-sided hydrostatic cavity, the stress of the inclined plane can be divided into the upward bearing force of the two sides and the horizontal force of the two sides, and the horizontal force of the two sides forms a closed loop automatic centering acting force. Thus, not only the control oil way is reduced, but also the linear motion automatic centering is realized.

For a 16m gantry mill workbench, two 8m gantry mill workbench are in butt joint, as shown in fig. 3, an 8m workbench is arranged in a dotted line frame, and an 8m gantry mill workbench is formed by combining a flat rail and a V rail, wherein the flat rail and the V rail are respectively provided with 5 through hydrostatic cavities.

The valve group comprises a plurality of speed regulating valve devices communicated with the static pressure cavity, wherein the speed regulating valve devices are provided with multiple paths of interfaces and are connected with a plurality of pipelines formed by series-parallel connection; in this embodiment, the speed regulating valve device adopts a triple speed regulating valve, and the triple speed regulating valve is correspondingly provided with three paths of interfaces, wherein two paths of interfaces are used for respectively connecting the parallel pipeline 14, one path of interfaces is used for connecting the serial pipeline 15, and the parallel pipeline 14 and the serial pipeline 15 are communicated by adopting copper tubes.

Specifically, as shown in fig. 3, if a group of five through hydrostatic cavities 13 is set, three hydraulic oil paths are correspondingly formed in a serial-parallel connection mode, and a parallel pipeline 14 is used for connecting two through hydrostatic cavities 13 in parallel into one path (i.e. a pipeline corresponding to a thick solid line in fig. 3), and a serial pipeline 15 is directly connected with one through hydrostatic cavity 13 (i.e. a pipeline corresponding to a thick dashed line in fig. 3), so as to form a 2-2-1 connection mode, and the three through hydrostatic cavities are generally formed into three paths corresponding to a triple speed regulating valve. Furthermore, every five through-type hydrostatic cavities are controlled by a three-way speed regulating valve, an 8m workbench is controlled by two three-way speed regulating valves, and a 16m gantry mill hydrostatic guideway is controlled by four three-way speed regulating valves.

Meanwhile, for the 16m gantry mill workbench, as shown in fig. 3, in the length direction of the hydrostatic guideway, the hydrostatic cavities 13 communicated with the serial pipelines 15 are positioned in the middle of the hydrostatic guideway 1, and the hydrostatic cavities 13 communicated with the parallel pipelines 14 are respectively arranged at two sides of the hydrostatic guideway 1.

As shown in fig. 2, the static pressure station 2 is connected with the valve group 3, and the static pressure station 2 comprises an oil tank 21, an oil suction filter 22, a VP-F40D variable vane pump 23b and a combined valve block 24b; the combined valve block 24B comprises a P-B25B relief valve 241B, a damping pressure gauge 242B, two series-connected WU-C100C 80B magnetic filters 243B, and a pressure relay 245B; the magnetic filter 243b can be arranged singly or more than two, and a plurality of filters are arranged in series; the static pressure station 2 can also return oil from the static pressure cavity 13 to the oil tank 21.

As shown in fig. 4, in the speed valve device, the speed valve 32 is three-way in the present embodiment, and three groups of adjustment members are provided in the speed valve device; as shown in fig. 5, the regulating member is formed in the valve body 41, and includes an adjustable throttle valve 42 and a constant pressure difference mechanism 43. Which is spatially distributed, the axial direction of the adjustable throttle valve 42 is perpendicular to the axial direction of the constant pressure difference mechanism 43.

The adjustable throttle valve 42 is installed in the valve body 41 and forms an oil intake chamber 452 with the valve body 41, and the adjustable throttle valve 42 includes a valve stem member 421, an adjusting member 422, and a first return member 423.

The valve stem member 421 includes a needle valve body 4211, a screw cap needle valve 4212; the screw cap needle valve 4212 is fixed on the valve body 41 in a sealing way, and an O-shaped sealing ring can be adopted at the sealing part; the needle valve body 4211 is inserted into the inner end of the screw cap needle valve 4212, and can move in the axial direction by the action of the adjusting member 422.

The adjustment member 422 includes an adjustment screw 4221, a lock nut 4222, and the adjustment screw 4221 is threaded with a screw cap needle valve 4212.

The first return member 423 is a first return spring 4231, and is sleeved on one end of the needle valve body 4211 away from the adjusting screw 4221, so that the needle valve body 4211 and the adjusting screw 4221 are always abutted.

The constant pressure difference mechanism 43 is installed in the valve body 41 and forms a first cavity 455 and a second cavity 463 with the valve body 41, and the constant pressure difference mechanism 43 includes a slide bar member 431 and a second restoring member 432.

The slide bar member 431 includes a slide valve 4311, a slide base 4312, and a stopper 4313; the plug 4313 is fixed on the valve body 41 in a sealing way, and an O-shaped sealing ring can be adopted at the sealing part; a first cavity 455 is formed between the spool 4311 and the plug 4313, a second cavity 463 is formed between the spool 4311 and the valve body 41, and a through hole 461 for communication is provided between the second cavity 463 and the oil intake cavity 452.

The second return member 432 is provided with a second return spring 4321 and is sleeved on the slide 4312, so that the slide 4312 is always abutted against the slide valve 4311.

With regard to the internal flow path design, a valve body passage 451, a pre-valve pressure chamber 45, a post-valve pressure chamber 46, and an oil outlet chamber 47 are formed in the valve body 41.

The oil inlet chamber 452 is connected to the valve body passage 451 through a horizontal passage 453, and the first cavity 455 is connected to the valve body passage 451 through a vertical passage 454; further, the oil feed chamber 452, the horizontal passage 453, the vertical passage 454, and the first cavity 455 constitute the pre-valve pressure chamber 45. The end parts of the horizontal channel 453 and the vertical channel 454 are provided with plugs.

The front valve pressure chamber 45 and the rear valve pressure chamber 46 are communicated through a through hole 461, the end of the valve rod member 421 is provided with a tapered head, and an adjustable first orifice 462 is formed based on the depth of the head inserted into the through hole 461; the slide rod member 431 has an outer wall surface of the same contour as the inlet end of the oil outlet chamber 47, and an adjustable second orifice 471 is formed based on the size of the covering surface of the outer wall surface covering the inlet end of the oil outlet chamber 47.

The first orifice 462 and the second cavity 463 constitute the post-valve pressure chamber 46.

The oil outlet cavity 47 is directly arranged on the valve body 41, the end part of the oil outlet cavity is plugged by a plug, the oil outlet cavity 47 is communicated with the second throttling hole 471 to form a load cavity (i.e. a static pressure cavity), the oil outlet cavity 47 is communicated with a horizontal oil duct 48, and the horizontal oil duct 48 is connected with the pressure display device 44; the pressure display device 44 includes a pressure measuring connector 441, a pressure measuring hose 442, and a pressure gauge 443, and when installed in a large-scale portal mill hydrostatic guideway system, can monitor the pressure in the hydrostatic cavity in real time.

According to the law of conservation of flow, the flow rate regulated by the speed regulating valve device is the leakage amount of the hydrostatic cavity, namely the floating amount of the hydrostatic guideway, so the flow rate is the floating amount of the hydrostatic guideway.

The pressure of the hydrostatic cavity pressure display device also represents the floating amount of the hydrostatic cavity.

The magnitude of the float can be known from the pressure value of the load chamber, and the pressure value is 1kgf/cm ²～3kgf/cm².

The V-shaped rail ensures the accuracy of the working table processing straight line, the floating amount is controlled to be 1kgf/cm ²～1.5kgf/cm², and the corresponding floating amount is between 0.01mm and 0.015 mm.

The floating amount of the flat rail is controlled to be 1.5kgf/cm ²～3kgf/cm² pressure value, and the corresponding floating amount is between 0.02 and 0.035 mm.

From this, the pressure display device based on the hydrostatic chamber can know the floating amount of the hydrostatic guideway.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same according to the content of the present utility model, and are not intended to limit the scope of the present utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments and that the present utility model may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present utility model be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A large planer grinder hydrostatic guideway system, comprising:

2. The large scale planer grinder hydrostatic guideway system according to claim 1, wherein: the speed regulating valve device adopts a three-way speed regulating valve, and further the three-way speed regulating valve is correspondingly provided with three ways of interfaces, wherein two ways of interfaces are used for respectively connecting parallel pipelines, and one way of interfaces is used for connecting serial pipelines.

3. A large scale planer grinder hydrostatic guideway system according to claim 2, wherein: and in the length direction of the hydrostatic guideway, the hydrostatic cavities communicated by the serial pipelines are positioned in the middle of the hydrostatic guideway, and the hydrostatic cavities communicated by the parallel pipelines are respectively arranged at two sides of the hydrostatic guideway.

4. A large scale planer grinder hydrostatic guideway system according to claim 2, wherein: the hydrostatic guideway comprises a flat rail and/or a V rail;

5. The large scale planer grinding hydrostatic guideway system according to claim 4, wherein: the parallel pipeline is used for connecting two paths of through hydrostatic cavities in parallel to form one path; the series pipeline is directly communicated with a through hydrostatic cavity.

6. The large scale planer grinder hydrostatic guideway system according to claim 1, wherein: the static pressure station comprises an oil tank, an oil suction filter, a variable vane pump and a combined valve block; the combined valve block comprises an overflow valve, a damping pressure gauge, a filter with magnetism and a pressure relay; the filter can be arranged in a single or a plurality of filters in series; and returning oil to the oil tank through the static pressure cavity.

7. The large scale planer grinder hydrostatic guideway system according to claim 1, wherein: the speed regulating valve device is internally provided with regulating members with the number corresponding to the number of the interfaces; the adjusting component comprises an adjustable throttle valve, a constant pressure difference mechanism and a pressure display device;

8. The large scale planer grinding hydrostatic guideway system according to claim 7, wherein: a valve body channel, a valve front pressure cavity, a valve rear pressure cavity and an oil outlet cavity are formed in the valve body;

9. The large scale planer grinder hydrostatic guideway system according to claim 8, wherein:

The valve rod member comprises a needle valve body and a screw cap needle valve; the screw cap needle valve is fixed on the valve body in a sealing way, and the needle valve body is inserted into the inner side end of the screw cap needle valve;