CN110842787A

CN110842787A - Grinding liquid control device for multi-grinding-head grinding wheel frame rotating tower

Info

Publication number: CN110842787A
Application number: CN201911133989.2A
Authority: CN
Inventors: 刘士吉; 程杰; 项明华; 杜雄
Original assignee: Shanghai Machine Tool Factory Co Ltd
Current assignee: Shanghai Machine Tool Factory Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-02-28

Abstract

The invention relates to a grinding fluid control device for a multi-grinding-head grinding wheel frame rotating tower, which comprises a water inlet head, a hollow shaft, a distributor and control valves, wherein the water inlet head is connected with the hollow shaft through a bearing, so that the hollow shaft can rotate around the center of the water inlet head, the hollow shaft is fixedly connected with the distributor, a water inlet and a water outlet which are arranged on the water inlet head are communicated with guide flow path holes which are arranged in the distributor through holes which are arranged on the hollow shaft, a plurality of second guide flow paths facing the water inlets of the control valves are arranged in the distributor, a control valve is arranged in each second guide flow path, and the control valves respectively control the communication between the second guide flow paths and a plurality of grinding head cooling pipelines on the grinding wheel frame rotating tower, so that the outflow of the grinding. The invention can ensure that the cooling and lubrication required by different grinding heads can be switched when processing workpieces, and the flexible processing capacity of the composite grinding machine is ensured.

Description

Grinding liquid control device for multi-grinding-head grinding wheel frame rotating tower

Technical Field

The invention relates to a grinding fluid control device, in particular to a grinding fluid control device for a multi-grinding-head grinding wheel frame turret.

Background

The composite grinding center is a high-grade numerical control machine tool with strong processing capacity, can finish various grinding procedures in one-time clamping of workpieces, and realizes precise processing of complex shapes. The multi-grinding-head grinding carriage turret is a core component of a composite grinding center, and patent publication numbers CN106514491B and CN110116370A respectively disclose two multi-grinding-head grinding carriage turret devices with different driving modes, wherein the former is a servo motor driving harmonic reducer type, and the latter is a torque motor direct driving type, and the two devices can be provided with a plurality of grinding heads. During grinding, in order to ensure the processing quality and improve the processing efficiency, the grinding heads participating in grinding are generally required to be cooled and lubricated respectively. The conventional grinding fluid supply device can only supply grinding fluid for a single grinding head. If the design idea is directly applied to the multi-grinding-head grinding carriage, the connected oil pipe rotates along with the rotation of the grinding carriage rotating tower, and the arrangement difficulty is greatly increased. Therefore, in order to perform effective cooling and lubrication when different grinding heads process workpieces, it is imperative to develop a grinding fluid control device specific to the wheel head turret.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a grinding fluid control device for a multi-grinding-head grinding wheel carriage turret.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a grinding liquid controlling means for many bistriques emery wheel frame capstan head, includes water inlet head, quill shaft, distributor, control valve, water inlet head and quill shaft pass through the bearing and are connected, make the quill shaft can rotate around the water inlet head center, quill shaft and distributor fixed connection, the water inlet that sets up on the water inlet head and delivery port pass through the perforating hole that sets up on the quill shaft and lead the flow path hole intercommunication with the inside setting of distributor, be equipped with a plurality of second guide flow path towards each control valve water inlet in the distributor, be equipped with the control valve in every second guide flow path, a plurality of control valves control the second guide flow path respectively with the intercommunication of a plurality of bistrique cooling line on the emery wheel frame capstan head to can open and close the outflow of the grinding liquid of distributor to single bist.

Further, a sealing element A and a sealing element B are arranged between the water inlet head and the hollow shaft, the sealing element A can prevent grinding fluid from leaking in the rotating process, and the sealing element B can prevent the pollution of the external environment to the bearing.

Further, the distributor is installed above the wheel slide turret, and the water inlet head is installed on a fixed part of the wheel slide turret.

Further, the outlet end of the second guide flow path is arranged at 90 degrees to the working chamber of the control valve and is communicated with the working chamber.

Further, the lower part of the through hole in the hollow shaft is communicated with a second guide flow path on the distributor, and the communicating part is sealed by means of welding or gluing connection between the hollow shaft and the distributor.

Further, the water inlet head is provided with a water inlet along the radial direction and a water outlet along the axial direction, a first guide flow path is formed between the water inlet and the water outlet, and the water outlet is communicated with the upper part of the through hole.

Further, the control valve is provided with a plug capable of linearly reciprocating, and when the plug extends out, the second guide flow path can be sealed to cut off outflow of the grinding fluid.

Further, the control valve is provided with a pneumatic actuator, and the pneumatic actuator is connected with the plug through a connecting sleeve and a tightening screw.

Further, the number of the closed distributors and the number of the control valves can be configured according to external grinding heads on the multi-grinding-head grinding wheel frame rotating tower.

The invention has the beneficial effects that:

the invention solves the cooling and lubricating problems of the multi-grinding-head grinding carriage turret of the composite grinding center, and realizes the independent control of the multi-grinding-head multi-path grinding fluid supply flow path; the device is arranged above the center of the rotating shaft of the multi-grinding-head grinding carriage rotating tower, so that the influence of inertia on the performance of a machine tool is reduced, the structures are simple, the maintenance is convenient, and the reliability of the composite grinding machine is greatly improved.

Drawings

Fig. 1 is a front sectional view of a grinding fluid control device for a multi-head grinding wheel carriage turret of the present invention;

fig. 2 is a plan view of a grinding fluid control device for a multi-head grinding wheel carriage turret of the present invention;

fig. 3 is a partially enlarged view of the control valve 7 in a closed state in the grinding fluid control device for the multi-head grinding wheel carrier turret shown in fig. 1.

Detailed Description

The invention is further described with reference to the following figures and examples.

As shown in fig. 1 and 2, the grinding fluid control apparatus for a multi-grinder turret according to the present invention includes: water inlet head 1, bearing 2, hollow shaft 3, sealing member 4, sealing member 5, distributor 6 and control valve 7.

The grinding fluid control device is generally positioned above the grinding wheel frame rotating tower, the distributor 6 is fixed on the upper surface of the grinding wheel frame, the hollow shaft 3 is connected with the upper end of the distributor 6 by welding or gluing, the water inlet head 1 is supported on the hollow shaft 3 through the bearing 2, the water inlet head 1 can be fixed on a machine tool or other components which do not rotate along with the grinding wheel frame rotating tower, and the distributor 6 and the hollow shaft 3 can freely rotate relative to the water inlet head 1 under the rotation of the multi-grinding wheel frame rotating tower.

A plurality of second guide flow paths radially extending toward the respective control valve inlets are formed in the distributor 6, the control valve 7 is capable of controlling communication with the second guide flow paths through a plurality of head cooling lines of the wheel head turret, and outlet ends 6b of the second guide flow paths are capable of being arranged at 90 degrees to and communicating with the control valve operating chamber 7 a; the hollow shaft 3 has a through hole 3a, the lower part of which communicates with the second guide flow path of the distributor 6, and the communicating part is sealed by welding, bonding, or other connecting means between the hollow shaft 3 and the distributor 6; the water inlet head 1 is provided with a water inlet 1a and a water outlet 1b along the radial direction, a first guide flow path is formed between the water inlet 1a and the water outlet 1b, the water outlet 1b is communicated with the upper part of a through hole 3a, and a sealing element 4 and a sealing element 5 for preventing grinding fluid from leaking are arranged between the water outlet 1b and the through hole 3 a; a grinding fluid source provided outside the grinding fluid control device is supplied to the first guide flow path via the water inlet 1 a.

The control valve 7 is provided with a plug 71 which can form close fit with the inner inclined plane of the control valve working cavity 7a, a sealing element 75 is arranged between the outer circumferential surface of the plug 71 and the inner circumferential surface of the control valve working cavity 7a, and the sealing element 75 can prevent the grinding fluid from leaking when the plug 71 reciprocates; the plug 71 is connected with the connecting sleeve 72 through threads; the connecting sleeve 72 is nested on the jacking screw 73, small sliding can be carried out between the connecting sleeve 72 and the jacking screw 73 along the axial direction, and the jacking head of the jacking screw 73 can jack the end face of the inner hole of the plug 71; the jacking screw 73 is in threaded connection with the pneumatic actuator 74. When one or more grinding heads of the multi-grinding head grinding wheel carriage turret stop grinding workpieces, the corresponding one or more control valves 7 are filled with compressed air, the pneumatic actuator 74 can push the push rod 74a to extend out, so as to push the tightening screw 73 to eject the plug 71, the plug 71 and the inner inclined surface of the control valve working chamber 7a form close fit relation, so as to plug the second guide flow path (see fig. 3) to cut off the supply of the grinding fluid, and similarly, when one or more grinding heads of the multi-grinding head grinding wheel carriage turret start grinding workpieces, the pneumatic actuator 74 can push the plug 71 to retract, so as to open the second guide flow path to restore the supply of the grinding fluid.

A plurality of the above-mentioned control valves 7 (4 in fig. 2) are respectively opened and closed to control the supply of grinding fluid to the one or more grinding heads in an operating state. For example, in the case of simultaneously machining two outer circular surfaces with two grinders mounted on one turret, a sufficient amount of grinding fluid can be supplied to the two grinders simultaneously by flow dividing control.

When the wheel slide turret rotates, the hollow shaft 3 and the distributor 6 and the control valve 7 are driven to rotate together with the wheel slide, and the water inlet head 1 is not rotated but supported by the bearing 2 to rotate relatively. At the moment, the

sealing elements

4 and 5 play a sealing role in the connection between the water inlet head 1 and the hollow shaft 3 which rotate relatively, and no grinding fluid leakage is ensured in the rotation process.

According to the invention, the grinding fluid control device is arranged above the grinding wheel frame turret, the related rotating body is positioned at the center of the turret rotating shaft, the water outlet direction is radially arranged, and the inertia of the device has little influence on the performance of the machine tool; the water inlet is connected with the distributor through the bearing, so that the structure is simple; the grinding fluid flow path is directly opened and closed by the control valves, so that the structure is reliable and the operation is convenient; the flexible processing capacity of the composite grinding machine is powerfully guaranteed.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. All structural equivalents made by using the contents of the specification and the drawings are included in the scope of the present invention.

Claims

1. A grinding fluid controlling means for many bistrique emery wheel frame capstan head, includes water inlet head (1), quill shaft (3), distributor (6), control valve (7), its characterized in that: the grinding wheel is characterized in that the water inlet head (1) is connected with the hollow shaft (3) through the bearing (2), the hollow shaft (3) can rotate around the center of the water inlet head (1), the hollow shaft (3) is fixedly connected with the distributor (6), a water inlet and a water outlet which are formed in the water inlet head (1) are communicated with a guide flow path hole which is formed in the distributor through a through hole (3a) formed in the hollow shaft, a plurality of second guide flow paths facing the water inlets of the control valves (7) are formed in the distributor (6), a control valve (7) is arranged in each second guide flow path, the control valves (7) respectively control the communication of the second guide flow paths and a plurality of grinding head cooling pipelines on the grinding wheel frame rotating tower, and therefore outflow of grinding fluid of the distributor (6) to a single grinding head can be opened and.

2. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: be provided with sealing member A (4), sealing member B (5) between head (1) and quill shaft (3) intakes, sealing member A (4) can prevent the grinding fluid seepage in the rotation process, sealing member B (5) can prevent the pollution of external environment to bearing (2).

3. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: the distributor (6) is arranged above the grinding wheel frame rotating tower, and the water inlet head (1) is arranged on a fixed part of the grinding wheel frame rotating tower.

4. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: the outlet end (6b) of the second guide flow path is arranged at 90 degrees to the working chamber (7a) of the control valve and is communicated with each other.

5. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: the lower part of the through hole (3a) in the hollow shaft (3) is communicated with a second guide flow path on the distributor (6), and the communicating part is sealed by welding or gluing connection between the hollow shaft (3) and the distributor (6).

6. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: the water inlet head (1) is provided with a water inlet (1a) and a water outlet (1b) along the axial direction, a first guide flow path is formed between the water inlet (1a) and the water outlet (1b), and the water outlet (1b) is communicated with the upper part of the through hole (3 a).

7. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 1, wherein: the control valve (7) is provided with a plug (71) capable of linearly reciprocating, and when the plug (71) extends out, the second guide flow path can be sealed to cut off outflow of the grinding fluid.

8. The grinding fluid control apparatus for a multi-grinder wheel carriage turret according to claim 7, wherein: the control valve (7) is provided with a pneumatic actuator (74), and the pneumatic actuator (74) is connected with the plug (71) through a connecting sleeve (72) and a jacking screw.

9. The grinding fluid control apparatus for a multi-head grinding wheel carriage turret according to any one of claims 1 to 8, wherein: the number of the closed distributors (6) and the number of the control valves (7) can be configured according to externally hung grinding heads on the multi-grinding-head grinding wheel frame rotating tower.