CN211841372U

CN211841372U - Grinding device for key slot in undercarriage

Info

Publication number: CN211841372U
Application number: CN202020476589.3U
Authority: CN
Inventors: 汪琦
Original assignee: Chengdu Ald Aviation Manufacturing Corp
Current assignee: Chengdu Ald Aviation Manufacturing Corp
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-11-03
Anticipated expiration: 2030-04-03

Abstract

The utility model relates to a keyway grinding device in undercarriage, including support, pivot, emery wheel, impeller and high-pressure air cock, the one end of support is fixed on the main shaft, the other end of support rotates through the bearing and installs the pivot, the impeller is installed respectively at the both ends of pivot, the middle part fixed mounting of pivot has the emery wheel, high-pressure air cock is installed to the middle part both sides of support, the gas outlet of high-pressure air cock is towards the impeller of its homonymy, the air flue has been seted up to the inboard of support, the air intake joint is installed to the one end and the high-pressure air cock intercommunication of air flue. The utility model has the advantages that: the high-pressure air is used as power, the weight and the volume are small, the structure is simple, the high-pressure air can be flexibly arranged on the main shafts of a horizontal machining center and a five-axis machining center, and the indexing and size adjustment are simple; the method is suitable for processing key grooves in undercarriage holes of various sizes.

Description

Grinding device for key slot in undercarriage

Technical Field

The utility model relates to a machine tooling technical field, especially undercarriage inner key groove grinding device.

Background

The civil aircraft landing gear of military aircraft has more types, and the key groove in the hole requires very accurate, and its material is superhard steel.

Most of the existing in-hole key groove grinding equipment is driven by a motor, has large volume and weight, cannot be flexibly installed on a main shaft of a machining center, and can only be installed on a common machine tool for use. And the key slot in the hole of the landing gear is more than one, and usually, the key slots in the holes are arranged at equal intervals, so that the common machine tool has the defects of difficult indexing and difficult depth adjustment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a keyway grinding device in undercarriage, the mountable is on horizontal machining center or five-axis machining center's main shaft, and the graduation, the degree of depth control of being convenient for are fit for the various undercarriage of variation in size.

The purpose of the utility model is realized through the following technical scheme:

key groove grinding device in undercarriage, including support, pivot, emery wheel, impeller and high-pressure air cock, the one end of support is fixed on the main shaft, the other end of support is rotated through the bearing and is installed the pivot, the impeller is installed respectively at the both ends of pivot, the middle part fixed mounting of pivot has the emery wheel, high-pressure air cock is installed to the middle part both sides of support, the impeller of its homonymy is towards to the gas outlet of high-pressure air cock, the air flue has been seted up to the inboard of support, the air intake joint is installed to the one end and the high-pressure air cock intercommunication of air.

Further, the support is fixedly installed on the end face of the main shaft through a screw.

Further, the air inlet joint is located at one end, close to the main shaft, of the support.

Further, the air inlet joint is a quick joint.

Further, the diameter of the grinding wheel is larger than that of the impeller.

Further, the grinding wheel is a CBN grinding wheel.

The utility model has the advantages of it is following:

1. the utility model discloses a highly-compressed air is as power, and weight is small, simple structure, can install in a flexible way on horizontal machining center, five-axis machining center's main shaft, and graduation, regulation size are simple.

2. The utility model discloses the downthehole keyway processing of undercarriage that can be applicable to various sizes.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the processing state of the present invention;

FIG. 3 is a cross-sectional structural schematic view of the landing gear;

in the figure: the method comprises the following steps of 1-main shaft, 2-support, 3-rotating shaft, 4-bearing, 5-grinding wheel, 6-impeller, 7-high pressure air nozzle, 8-air channel, 9-air inlet joint, 10-workpiece and 11-key groove.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1 to 2, the grinding device for the key groove in the landing gear comprises a support 2, a rotating shaft 3, a grinding wheel 5, an impeller 6 and a high-pressure air nozzle 7, wherein one end of the support 2 is fixed on the main shaft 1, the main shaft 1 is a main shaft of a horizontal machining center or a main shaft of a five-axis machining center, the other end of the support 2 is rotatably provided with the rotating shaft 3 through a bearing 4, more preferably, the bearing 4 adopts a cylindrical roller bearing, the impellers 6 are respectively arranged at two ends of the rotating shaft 3, the grinding wheel 5 is fixedly arranged in the middle of the rotating shaft 3, the high-pressure air nozzles 7 are arranged at two sides of the middle of the support 2, an air outlet of the high-pressure air nozzle 7 faces to the impeller 6 at the same side, an air passage 8 is arranged at the inner side of the support 2, one end of the, to provide high pressure gas.

Further, the support 2 is fixedly mounted on the end surface of the main shaft 1 by screws.

Further, the air inlet joint 9 is positioned at one end of the support 2 close to the main shaft 1, so that the air inlet joint 9 is far away from the grinding wheel 5, and an air pipe connected with the air inlet joint 9 is prevented from interfering with the rotation of the grinding wheel 5.

Further, air inlet joint 9 is the ready-packaged joint, the dismouting trachea of being convenient for.

Further, the diameter of the grinding wheel 5 is larger than that of the impeller 6, and the rotating impeller 6 is prevented from interfering with a key groove in a grinding hole of the grinding wheel 5.

Furthermore, the grinding wheel 5 is a CBN grinding wheel, the surface roughness of the key groove in the hole can be better due to the CBN grinding wheel rotating at a high speed, the wear resistance of the grinding wheel is better than that of a common grinding wheel, the CBN grinding wheel has good heat conductivity, and cold cutting can be realized when the key groove in the hole is ground.

The working process of the utility model is as follows: as shown in fig. 3, a plurality of key grooves 11 are formed in the inner hole of the workpiece 10 (landing gear). When processing, fix this grinding device's support 2 on main shaft 1, connect the trachea on air inlet joint 9, main shaft 1 can realize the accurate control of graduation, the degree of depth under horizontal machining center or five-axis machining center's control action, lets in high-pressure gas through the trachea, from high-pressure air cock 7 blowout, drives impeller 6 high-speed rotatory to pivot 3 and emery wheel 5 rotate along with impeller 6 is high-speed, and emery wheel 5 grinds the inner wall of work piece 10, and final grinding obtains keyway 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Undercarriage internal keyway grinding device, its characterized in that: including support (2), pivot (3), emery wheel (5), impeller (6) and high pressure air cock (7), the one end of support (2) is fixed on main shaft (1), the other end of support (2) is passed through bearing (4) and is rotated and install pivot (3), impeller (6) are installed respectively at the both ends of pivot (3), the middle part fixed mounting of pivot (3) has emery wheel (5), high pressure air cock (7) are installed to the middle part both sides of support (2), the gas outlet of high pressure air cock (7) is towards impeller (6) of its homonymy, air flue (8) have been seted up to the inboard of support (2), air inlet joint (9) are installed to the one end and high pressure air cock (7) intercommunication of air flue (8), the other end.

2. A gear inner keyway grinding device according to claim 1, wherein: the support (2) is fixedly arranged on the end face of the main shaft (1) through a screw.

3. A gear inner keyway grinding device according to claim 1, wherein: the air inlet joint (9) is positioned at one end of the support (2) close to the main shaft (1).

4. A gear inner keyway grinding device according to claim 1 or claim 3, wherein: the air inlet joint (9) is a quick joint.

5. A gear inner keyway grinding device according to claim 1, wherein: the diameter of the grinding wheel (5) is larger than that of the impeller (6).

6. A gear inner keyway grinding device according to claim 1, wherein: the grinding wheel (5) is a CBN grinding wheel.