CN210704784U

CN210704784U - Pneumatic line scribing device

Info

Publication number: CN210704784U
Application number: CN201920718619.4U
Authority: CN
Inventors: 曹科; 丁建学; 吴存福; 李启亮
Original assignee: AVIC Shaanxi Aircraft Industry Group Corp Ltd
Current assignee: Shaanxi Aircraft Industry Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-06-09
Anticipated expiration: 2029-05-17

Abstract

The utility model provides a be used for pneumatic groove device, include: the air guide component, the air bin, the sliding part, the elastic part, the screw plug and the exhaust hole; the slider includes: the limiting part is in contact with the bottom of the gas bin at one end, and the sliding part and the scribing part are in sliding fit with the side wall of the gas bin; a gap is formed between the gas bin and the limiting part, one end of the elastic piece is contacted with a step on the connecting surface of the scribing part and the sliding part, the other end of the elastic piece is contacted with the bottom surface of the screw plug, the screw plug is in threaded connection with the opening of the gas bin, and the gas guide assembly is communicated with the gap; the exhaust hole is formed in the side wall of the air bin. The device overcomes the defects of uneven scribing width, burrs around the scribing line, low surface quality, easy breakage of the scribing needle and the like of the common scribing device.

Description

Pneumatic line scribing device

Technical Field

The utility model belongs to the machining field relates to a be used for pneumatic groove device.

Background

In the numerical control machining process, a part outline needs to be scribed on a process equipment or a product part at times, and a nicking tool (shown in fig. 1) is generally used for scribing the part outline, and is generally called a scriber. The tool is easy to cause uneven depth of line carving of a part due to the height fluctuation difference of process equipment or the molded surface of the part, and the common line carving mode is that a scriber directly slides on the surface of a tool or the part, so cutting does not occur, accumulated chips are easy to cause, the accumulated chips are pushed to advance by the scriber, the situation that the line of the part becomes thick, burrs exist, the surface is scratched, even the scriber is broken and the like are easy to cause as the accumulated chips are more and more.

SUMMERY OF THE UTILITY MODEL

Solves the technical problem

The utility model overcomes the part line of manufacturing becomes thick, has burr, surface fish tail, the cracked not enough of scriber even, provides a range of application wider, the higher carving device of ruling quality and precision.

In a first aspect, there is provided a pneumatic scoring device comprising: the air guide component, the air bin, the sliding part, the elastic part, the screw plug and the exhaust hole; the slider includes: the limiting part is in contact with the bottom of the air bin at one end, and the sliding part and the scribed line part are in sliding fit with the side wall of the air bin; a gap is formed between the gas bin and the limiting part, one end of the elastic piece is contacted with a step on the connecting surface of the scribing part and the sliding part, the other end of the elastic piece is contacted with the bottom surface of the screw plug, the screw plug is in threaded connection with the opening of the gas bin, and the gas guide assembly is communicated with the gap; the exhaust hole is formed in the side wall of the gas bin;

the sliding part closes the exhaust hole in an initial state, when the air guide assembly inflates air into the air bin, the gap is enlarged, the carving needle slides downwards, the elastic part is compressed, and when the carving needle slides downwards to a certain degree, the exhaust hole is communicated with the enlarged gap; when the exhaust hole is communicated with the enlarged gap, the exhaust hole exhausts gas, the air pressure in the gap is reduced, the elastic part extends, the sliding part slides upwards, and when the sliding part slides upwards to a certain degree, the sliding part seals the exhaust hole.

Further, the air guide assembly includes: a gas guide tube and a regulating valve; one end of the air duct is connected with the regulating valve, and the other end of the air duct is communicated with the gap.

Further, the elastic member is a spring.

Further, the limiting part is cylindrical, the sliding part is cylindrical, and the limiting part and the sliding part are coaxial.

Furthermore, the shape of the scribing part is a combination of a cylinder and a cone, and the scribing part is coaxial with the limiting part and the sliding part.

Further, the diameter of the sliding part is larger than that of the scribing part, and the diameter of the sliding part is larger than that of the limiting part.

Further, the exhaust pipe is a hose.

Furthermore, the input end of the regulating valve is connected with the air supply end.

Advantageous effects

The scribing device solves the problems of burrs around the scribing line, surface scratches of surface parts, even breakage of the scribing needle and the like caused by the accumulated chips generated in the scribing process due to the uneven depth and width of the scribing line, and provides the scribing device with wider application range and higher scribing quality and precision.

Drawings

The utility model comprises 3 drawings, the drawings and the description of the drawings are as follows:

FIG. 1 is a schematic view of a conventional scribing apparatus;

FIG. 2 is a schematic structural diagram of a pneumatic scribing device;

fig. 3 is a schematic diagram of the operation of the pneumatic scribing device.

Wherein, 1, the governing valve, 2, the air duct, 3, the gas storehouse, 4, the gas pocket, 5, the needle, 6, the spring, 7 the plug screw.

Detailed Description

The utility model relates to a be used for pneumatic groove device to make the detailed description with the attached drawing:

in the scheme, in order to meet the requirements, the scribing device shown in fig. 2 is designed, the mode that a scriber slides on the surface of a part when the original device performs scribing is changed into the mode that the scriber moves up and down, and intensive contacts are left on the surface of a tool or the part along with the moving track of a machine tool, so that a part line is scribed. The scheme comprises an adjusting valve 1, an air duct 2, an air bin 3, an air hole 4, a needle 5, a spring 6 and a plug screw 7.

This device during operation is like 3 shows, and the air current passes through from the governing valve, gets into the gas storehouse through the air duct, and the increase of gas storehouse internal gas pressure increases when atmospheric pressure increases to certain extent, promotes the needle 5 and moves down, and after needle 5 moved to exposing the exhaust hole, the air current flowed out from the exhaust hole, and 3 internal gas pressures in the gas storehouse reduce, and spring 6 kick-backs, and needle 5 moves up, and the exhaust hole is closed. The air pressure in the air bin 3 rises again, the engraving needle 5 moves downwards again, and the reciprocating motion is carried out, so that the engraving needle 5 engraves dense points on the part and moves along the track of the machine tool, and the part line is engraved. The device can control the air inlet size through the adjusting valve, thereby controlling the air pressure in the air chamber 3 to be high or low, and achieving the effect of adjusting the stroke of the needle 5 or closing the device.

Claims

1. A device for pneumatic scoring, comprising: the air guide component, the air bin, the sliding part, the elastic part, the screw plug and the exhaust hole; the slider includes: the limiting part is in contact with the bottom of the gas bin at one end, and the sliding part and the scribing part are in sliding fit with the side wall of the gas bin; a gap is formed between the gas bin and the limiting part, one end of the elastic piece is contacted with a step on the connecting surface of the scribing part and the sliding part, the other end of the elastic piece is contacted with the bottom surface of the screw plug, the screw plug is in threaded connection with the opening of the gas bin, and the gas guide assembly is communicated with the gap; the exhaust hole is formed in the side wall of the gas bin;

the sliding part closes the exhaust hole in an initial state, when the air guide assembly inflates air into the air bin, the gap is enlarged, the sliding piece instantly slides downwards, the elastic piece is compressed, and when the carving needle slides downwards to a certain degree, the exhaust hole is communicated with the enlarged gap; when the exhaust hole is communicated with the enlarged gap, the exhaust hole exhausts gas, the air pressure in the gap is reduced, the elastic part extends, the sliding part slides upwards, and when the sliding part slides upwards to a certain degree, the sliding part seals the exhaust hole.

2. The apparatus of claim 1, wherein the gas directing assembly comprises: a gas guide tube and a regulating valve; one end of the air duct is connected with the regulating valve, and the other end of the air duct is communicated with the gap.

3. The device of claim 1, wherein the resilient member is a spring.

4. The device of claim 1, wherein the stop portion is cylindrical and the sliding portion is cylindrical, the stop portion and the sliding portion being coaxial.

5. The apparatus of claim 4, wherein the shape of the scribing portion is a combination of a cylinder and a cone, and the scribing portion is coaxial with the stopper portion and the sliding portion.

6. The apparatus of claim 5, wherein the sliding portion has a diameter greater than a diameter of the score portion and the sliding portion has a diameter greater than a diameter of the stop portion.

7. The device of claim 2, wherein the airway tube is a flexible tube.

8. The apparatus of claim 2, wherein the input of the regulator valve is connected to a gas supply.