CN216681581U

CN216681581U - Blade grinding machine with double-spindle structure

Info

Publication number: CN216681581U
Application number: CN202123025471.2U
Authority: CN
Inventors: 黄振宇; 何亮; 董宏; 叶强; 宋汝贲
Original assignee: Zhejiang Hangji Co ltd
Current assignee: Zhejiang Hangji Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-06-07
Anticipated expiration: 2031-12-02

Abstract

The utility model discloses a blade grinding machine with a double-spindle structure, and aims to overcome the defect that the efficiency and the precision of the conventional machining mode cannot be compatible. The utility model discloses an including last bistrique and the lower bistrique that arranges one on top of the other, the grinding face of going up bistrique and lower bistrique is relative and the axis is parallel, goes up bistrique and lower bistrique through the driver and goes up the lift on the grinding machine. Through processing simultaneously at the two sides of tenon tooth, have higher efficiency, the tenon tooth to blade root that can be good again fast is processed, realizes high efficiency high accuracy processing.

Description

Blade grinding machine with double-spindle structure

Technical Field

The utility model relates to the technical field of machining and grinding, in particular to a blade grinding machine with a double-spindle structure.

Background

The material hardness of the aeroengine blade and the gas turbine blade is high, the aeroengine blade and the gas turbine blade belong to materials which are difficult to process, and particularly, the shape profile degree and the symmetry degree of the tenon tooth at the root part of the blade have higher requirements.

The requirements of aero-engine blades and gas turbine blades are increasing, and the requirements cannot be met by means of a transmission polishing mode.

The existing grinding mode is difficult to consider efficiency and precision, and in view of the above, the application aims to provide a blade grinding machine with a double-spindle structure for carrying out high-efficiency and high-precision machining on tenon teeth at the root of a blade.

Disclosure of Invention

The utility model overcomes the defect that the efficiency and the precision of the existing processing mode cannot be compatible, and provides the blade grinding machine with the double-spindle structure, which can quickly and well process the tenon teeth at the root part of the blade and realize high-efficiency and high-precision processing.

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

a blade grinding machine with a double-spindle structure comprises an upper grinding head and a lower grinding head which are arranged one above the other, wherein the grinding surfaces of the upper grinding head and the lower grinding head are opposite and the axes of the upper grinding head and the lower grinding head are parallel, and the upper grinding head and the lower grinding head ascend and descend on the grinding machine through a driver.

As a common knowledge, the upper grinding head and the lower grinding head which are arranged one above the other are driven by corresponding drivers to rotate. The root of the blade is fed between the two grinding heads and is ground by the grinding surfaces of the grinding heads. The two grinding heads are symmetrically arranged relative to the tenon tooth, the cutting amount of the two grinding heads is consistent, and the two sides of the tenon tooth are ground simultaneously, so that the effect of high-efficiency processing is achieved.

Preferably, the grinding machine also comprises a guide rail and a workbench which is connected on the guide rail in a sliding way, wherein a clamp is arranged on the workbench, and the clamp positions the blade and moves on the guide rail to pass through the grinding surfaces of the upper grinding head and the lower grinding head.

The workbench is connected to the guide rail in a sliding mode, driven by the driving device through the screw rod sliding block structure, moves left and right on the guide rail, drives the clamp to move, and achieves feeding. The fixture comprises a plurality of clamping blocks for fixing the blades, the clamping blocks are provided with contour shapes corresponding to the blades, and the clamping blocks clamp the blades.

Preferably, a roller dresser is arranged on the workbench, the roller dresser comprises a dressing driver and a diamond roller, and the dressing driver pushes the diamond roller to extend out along the axial direction of the upper grinding head. The roller dresser is arranged on the workbench and moves together with the clamp, when the grinding head needs to be maintained and dressed is determined by recording the workload of the grinding head, the clamp is vacant, the diamond roller is controlled to extend out towards the grinding head, the diamond roller and the two grinding heads are dressed by the two grinding heads, and the profile degree and the symmetry degree of the tenon tooth processing of the blade root are ensured.

Preferably, a grinding head housing is arranged outside the upper grinding head and the lower grinding head, a movable spray head is arranged on the grinding head housing, and liquid flow is sprayed out of the movable spray head along the grinding surface of the upper grinding head or the lower grinding head. The liquid flow sprayed by the movable spray head plays a role in cooling and cleaning.

Preferably, the movable nozzle is connected to the grinding head housing in a lifting mode, and the movable nozzle tracks the diameter of the upper grinding head or the lower grinding head, so that liquid flow generated by the movable nozzle is always adapted to the shape of the upper grinding head or the lower grinding head. Because the grinding head is abraded, when the grinding head is abraded, the liquid flow can be mismatched with the grinding head, the current diameter of the grinding head is tracked through the sensor, and then the movable spray head is adjusted to enable the liquid flow to be sprayed onto the grinding surface all the time. The specific moving mode of the movable nozzle is lifting motion, the sprayed angle of the movable nozzle is inconvenient, the movable nozzle is connected with a hard tube, the hard tube is clamped by the telescopic end of a linear driver, the telescopic end of the linear driver moves along the lifting direction, and the height of the movable nozzle is changed under the condition that the sprayed angle of the movable nozzle is not changed, so that the spraying position is changed.

Preferably, the grinding machine is provided with a closed housing, the closed housing seals and protects moving parts of the grinding machine, a cooling and purifying device is arranged outside the closed housing, and the cooling and purifying device recovers liquid flow sprayed by the movable spray head and pumps the liquid flow to the movable spray head again. The closed housing plays a role in protection, and avoids the chips generated by grinding from polluting the external environment and influencing the personal health of operators.

Preferably, the main shaft bearings of the upper grinding head and the lower grinding head adopt three groups of paired high-precision bearings. The arrangement enhances the protection of the main shaft bearing and prolongs the service life of the bearing. Also, a patented technology "spindle air pressure sealing device" (patent No. ZL 200520100432.6) is applied.

Preferably, the upper grinding head and the lower grinding head are respectively and fixedly connected to a roller screw rod pair, and the screw rod is in transmission connection with a lifting driver through a worm gear reducer. The upper grinding head and the lower grinding head are provided with independent feeding mechanisms and can independently perform ascending and descending motions. The worm gear and worm reducer has a self-locking function.

Compared with the prior art, the utility model has the beneficial effects that: (1) the two surfaces of the tenon tooth are simultaneously processed, so that the efficiency is higher; (2) the automatic spray head adjusts the position according to the abrasion condition of the grinding head, and plays a role in cooling and purifying all the time.

Drawings

FIG. 1 is an overall view of the present invention;

FIG. 2 is a schematic view of the removal cooling purification apparatus of the present invention;

FIG. 3 is a schematic view of the removal jig of FIG. 2;

in the figure:

the grinding head grinding device comprises an upper grinding head 1, a lower grinding head 2, a guide rail 3, a workbench 4, a clamp 5, a roller dresser 6, a dressing driver 7, a diamond roller 8, a grinding head housing 9, a movable spray head 10, a closed housing 11, a cooling and purifying device 12 and a lifting driver 13.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present disclosure, do not refer to any components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected," "connected," and the like should be understood broadly, and mean that they may be fixedly connected, integrally connected, or detachably connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example (b):

a blade grinding machine with a double-spindle structure is shown in figure 1 and comprises an upper grinding head 1 and a lower grinding head 2 which are arranged one above the other, grinding surfaces of the upper grinding head 1 and the lower grinding head 2 are opposite and axes of the upper grinding head and the lower grinding head are parallel, and the upper grinding head 1 and the lower grinding head 2 ascend and descend on the grinding machine through a driver. The main shaft bearings of the upper grinding head 1 and the lower grinding head 2 are three groups of paired high-precision bearings. The arrangement enhances the protection of the main shaft bearing and prolongs the service life of the bearing. Also, a patented technology "spindle air pressure sealing device" (patent No. ZL 200520100432.6) is applied. The upper grinding head 1 and the lower grinding head 2 are respectively and fixedly connected to a roller screw rod pair, and the screw rod is in transmission connection with a lifting driver 13 through a worm and gear reducer. The upper grinding head 1 and the lower grinding head 2 are provided with independent feeding mechanisms and can independently perform ascending and descending motions. The worm gear and worm reducer has a self-locking function. The upper grinding head 1 and the lower grinding head 2 which are arranged above and below each other are driven by corresponding drivers.

The root of the blade is fed between the two grinding heads and is ground by the grinding surfaces of the grinding heads. The two grinding heads are symmetrically arranged relative to the tenon tooth, the cutting amount of the two grinding heads is consistent, and the two sides of the tenon tooth are ground simultaneously, so that the effect of high-efficiency processing is achieved. Specifically, the blade grinding machine further comprises a guide rail 3 and a workbench 4 connected to the guide rail 3 in a sliding mode, wherein a clamp 5 is arranged on the workbench 4, and the clamp 5 positions the blade and moves on the guide rail 3 to pass through the grinding surfaces of the upper grinding head 1 and the lower grinding head 2. The workbench 4 is connected to the guide rail 3 in a sliding mode, the workbench 4 is driven by the driving device through the screw rod sliding block structure to move left and right on the guide rail 3, the clamp 5 is driven to move, and feeding is achieved. The fixture 5 comprises a plurality of clamping blocks for fixing the blades, the clamping blocks are provided with contour shapes corresponding to the blades, and the clamping blocks clamp the blades.

Be equipped with roller dresser 6 on the workstation 4, roller dresser 6 is including dressing driver 7 and buddha's warrior attendant gyro wheel 8, and dressing driver 7 promotes buddha's warrior attendant gyro wheel 8 and stretches out along the axial direction of last bistrique 1. The roller dresser 6 is installed on the workbench 4 and moves together with the fixture 5, when the grinding head needs to be maintained and dressed is determined by recording the workload of the grinding head, the fixture 5 is vacant, the diamond roller 8 is controlled to extend out towards the grinding head, the diamond roller 8 and the two grinding heads are dressed by the two grinding heads, and the profile degree and symmetry degree of the tenon tooth processing of the blade root are ensured.

And grinding head housings 9 are arranged outside the upper grinding head 1 and the lower grinding head 2, a movable spray head 10 is arranged on each grinding head housing 9, and the movable spray head 10 sprays liquid flow along the grinding surface of the upper grinding head 1 or the lower grinding head 2. The liquid stream from the moving spray head 10 provides cooling and cleaning. The movable spray head 10 is connected to the grinding head housing 9 in a lifting manner, and the movable spray head 10 tracks the diameter of the upper grinding head 1 or the lower grinding head 2, so that liquid flow generated by the movable spray head 10 is adapted to the shape of the upper grinding head 1 or the lower grinding head 2 all the time. When the grinding head is abraded, the liquid flow can be mismatched with the grinding head, the current diameter of the grinding head is tracked through the sensor, and then the movable spray head 10 is adjusted to enable the liquid flow to be sprayed onto the grinding surface all the time. The specific moving mode of the movable nozzle 10 is a lifting motion, the spraying angle of the movable nozzle is inconvenient, the movable nozzle 10 is connected with a hard pipe, the hard pipe is clamped by the telescopic end of the linear driver, the telescopic end of the linear driver moves along the lifting direction, and the height of the movable nozzle 10 is changed under the condition that the spraying angle of the movable nozzle 10 is not changed, so that the spraying position is changed.

The grinding machine is provided with a closed housing 11, the closed housing 11 seals and protects moving parts of the grinding machine, a cooling and purifying device 12 is arranged outside the closed housing 11, and the cooling and purifying device 12 recovers liquid flow sprayed by the movable spray head 10 and pumps the liquid flow to the movable spray head 10 again. The closed housing 11 plays a role in protection, and avoids the chips generated by grinding from polluting the external environment and affecting the personal health of operators.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the utility model as set forth in the appended claims.

Claims

1. A blade grinding machine with a double-spindle structure is characterized by comprising an upper grinding head and a lower grinding head which are arranged up and down, wherein the grinding surfaces of the upper grinding head and the lower grinding head are opposite and the axes of the upper grinding head and the lower grinding head are parallel, and the upper grinding head and the lower grinding head are lifted up and down on the grinding machine through a driver.

2. The twin spindle blade grinder of claim 1, further comprising a guide rail and a table slidably coupled to the guide rail, the table having a jig for positioning the blade and moving on the guide rail to pass the grinding surfaces of the upper grinding head and the lower grinding head.

3. The twin spindle structured blade grinder as claimed in claim 1, wherein the table is provided with a roller dresser, the roller dresser including a dressing actuator and a diamond roller, the dressing actuator urging the diamond roller to project in an axial direction of the upper grinding head.

4. The twin spindle blade grinder of claim 1, wherein a grinding head housing is provided outside the upper grinding head and the lower grinding head, and a movable nozzle is provided on the grinding head housing, the movable nozzle spraying a liquid stream along a grinding surface of the upper grinding head or the lower grinding head.

5. The blade grinding machine of the double main shaft structure as claimed in claim 4, wherein the movable nozzle is connected to the grinding head housing in a lifting manner, and the movable nozzle tracks the diameter of the upper grinding head or the lower grinding head so that the liquid flow generated by the movable nozzle is always adapted to the shape of the upper grinding head or the lower grinding head.

6. The blade grinding machine of claim 5, wherein the grinding machine is provided with a closed housing which seals and protects moving parts of the grinding machine, and the closed housing is externally provided with a cooling and purifying device which recovers liquid flow sprayed from the movable spray head and pumps the liquid flow to the movable spray head again.

7. The blade grinding machine of claim 1, wherein the upper grinding head and the lower grinding head are three pairs of high precision bearings.

8. The blade grinding machine of a double main shaft structure as claimed in any one of claims 1 to 7, wherein the upper grinding head and the lower grinding head are respectively and fixedly connected to a roller screw pair, and the screw is in transmission connection with a lifting driver through a worm gear reducer.