WO2012151760A1

WO2012151760A1 - Device and method for air cooling cutter and sand discharging

Info

Publication number: WO2012151760A1
Application number: PCT/CN2011/074280
Authority: WO
Inventors: 单忠德; 刘丰; 顾兆现
Original assignee: 机械科学研究总院先进制造技术研究中心
Priority date: 2011-05-06
Filing date: 2011-05-18
Publication date: 2012-11-15
Also published as: CN102225458A

Abstract

A device for air cooling cutter and sand discharging comprises a central fixing ring (1), an upper closing cover (2) and a lower air outlet structure which are connected with the central fixing ring. A method for air cooling cutter and sand discharging is also disclosed, which comprises the following steps: sending compressed air to the device, splitting the compressed air from the lower air outlet structure of the device to form high speed air flow, so as to make air around the cutter flow, thereby accelerating heat transferring of the cutter and cooling the cutter quickly. The device can permit the air to flow out annularly around the cutter, blow sand grains or sweeps cut by the cutter out of the cutting zone timely, and apply to air cooling cutter or situation that chipping need to be blown out of the cutting zone.

Description

The utility model relates to a tool air-cooling and sand discharging device. The application request is submitted to the State Intellectual Property Office of China on May 6, 2011, and the application number is 201110116792.5, and the invention name is "a method and device for integrating air-cooling and sand discharging of a tool. The present invention relates to the field of special processing machine tool accessories, and in particular to a tool air cooling and sand discharging integration method and device. BACKGROUND OF THE INVENTION Casting is one of the main methods for obtaining mechanical product blanks. It is an important basic process of the machinery industry. The foundry industry is an important basic industry for the development of the national economy. It is the foundation of the pillar industries such as automobile, petrochemical, steel, electric power, shipbuilding, textile, equipment manufacturing, and is an important part of the manufacturing industry. The diversification and individualization of products, the demand for single-piece and small-volume castings are increasing, especially in the product development stage, and the production cycle is short and the renewal speed is fast. However, the production of single-piece and small-volume castings in China is still Inheriting traditional manufacturing processes, not only long manufacturing cycles, high production costs, but also resources In order to solve this problem, a digital rapid manufacturing method for the mold is proposed, which is directly processed by a casting type CNC cutting and forming machine, and the blank is obtained into a mold. However, in the process of casting, the cut sand is High-speed rotating tools bring up, high-speed splashing, and irregular, which not only pollutes the working environment, but also the particles remaining in the model gap will increase the wear on the tool, affecting the tool life and the accuracy of the cutting process. In the process, a large amount of waste is generated, and if it is not cleaned in time, a large amount of waste is accumulated in the processed cavity. - The waste on the type will damage the surface quality of the sand, affecting the subsequent casting precision, and the sand remaining in the gap of the model. Friction and tooling produce harmful friction, increase tool wear and reduce tool life. Therefore, if it is not cleaned in time, it will seriously affect the processing quality and tool life. Usually, when using compressed air to discharge sand, it is generally used with single and double blowing nozzles. Divided into the periphery of the tool, but this structure contains dead angles in the blowing and chip removal, so that some sand chips can not be timely Walking, thereby accelerating the wear of the tool and reducing the service life of the tool. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide an all-round tool for air cooling and row-integration in view of the deficiencies of the prior art. Method and apparatus, the device can be evenly distributed around the tool The airflow blown from the air outlet is fully cooled by the cutter and the waste cut by the cutter is cleaned in time. The device can adjust the air volume by replacing the lower air outlet structure or adjusting the control piece of the air outlet structure. Simple, convenient and fast. A method for integrating air cooling and sand discharging of a tool, comprising the following contents: 1) conveying compressed air of a compressed air source through a gas pipe to an air-cooling and sand discharging integrated device;

2) The compressed air is divided by the air-cooling of the cutter and the annularly distributed air outlet in the integrated device to form a uniform high-speed airflow around the cutter;

3) The high-speed airflow removes the heat from the tool and also blows the waste sand cut by the tool away from the cutting area; the air outlet in the tool air-cooling and sand-discharging integrated device can be controlled by the control piece or by replacing the lower air outlet cover The size of the port is simple and convenient. The tool air-cooling and sand-discharging integrated device comprises a middle fixing ring, an upper end cover, a lower air outlet end cover, a control piece, a sealing ring, a positioning nut and a manual column. The central fixing ring is provided with an inlet pipe mounting hole and a set screw mounting hole, and the inlet pipe mounting hole is connected with the external air pipe, and the fixing screw mounting hole cooperates with the screw to fix the entire device on the electric spindle positioning shoulder. The upper end cover and the lower air outlet end cover are screwed to the middle fixing ring, and a circular sealing port is arranged between the upper end cover and the middle fixing ring, and a square sealing port is arranged between the lower air outlet end cover and the middle fixing ring. The lower outlet end cap and the control piece are installed concentrically. The control piece and the outlet end cover are provided with an annular air outlet and the shape of the air outlet is the same. The air outlet of the device can be adjusted by changing the size of the air outlet by rotating the control piece, and the air outlet of the lower air outlet cover and the control piece can be specifically processed according to the processing. The environment requires the corresponding number and the shape of the air outlet to achieve optimal tool cooling and μ less effect. The sealing structure adopts a central fixed ring, an upper end cover and a cylindrical surface of the electric spindle positioning shoulder to form a triangular wedge shape, and the three parts co-extrude the sealing 圏 to achieve a good sealing effect, the structure is simple and the installation is convenient, and the device is in the overall structure It is simple, easy to use, easy to maintain, and can achieve good tool air cooling and waste cleaning. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a method and apparatus for integrating air cooling and sand discharging of the present invention, FIG. 1 is a cross-sectional view of an air cooling and sand discharging method of the present invention. 3 is a schematic view of the air outlet control method of the air cooling and sand discharging integrated method and device of the present invention.

1 a central fixing ring 2 - upper end cover 3 - round dense ring 4 square dense to the ring 5 - lower air outlet end cover 6_ control piece 7 - manual column 8 - positioning nut 9 a fastening screw mounting hole 10 - The intake pipe mounting hole 11 - the electric main shaft 12 - the notch groove. The specific embodiment is to clearly illustrate the technical features of the present solution. The present invention will be described below by way of specific embodiments and with reference to the accompanying drawings. As shown in the figure, a tool air-cooling and row-integration method and device comprises a middle fixing ring 1, an upper end cover 2, a lower air outlet structure, a square sealing ring, a circular sealing ring, etc., and a mounting hole through a set screw The middle fixing ring 1 is fixed on the positioning shoulder of the electric main shaft 11, and the middle fixing ring has an air inlet pipe mounting hole 9 connected to the external air pipe, and the upper end cover 2, the lower air outlet structure and the middle fixing ring 1 are screwed, and the upper end cover 2 A circular sealing ring 3 is arranged between the central fixing ring 1. The lower air outlet structure is composed of a lower air outlet end cover 5 and a control piece 6, and the lower air outlet end cover 5 and the control piece 6 are placed concentrically to ensure that the annular opening 12 on the air outlet end cover 5 and the control piece 6 can be rotated at a certain angle. The lower part is completely coincident, and there is a square sealing ring 4 between the lower air outlet structure and the middle fixing ring 1. The lower outlet end cover 5 and the notch 12 on the control piece are annularly uniform, and the shape and number of the control piece 6 and the opening end of the outlet end cover 5 are the same, and the shape of the notch (such as a triangle) , trapezoids, rectangles, circles, etc.) and the number can be set according to the specific situation. The process of implementing the function is as follows: The tool air-cooling and sand-discharging integrated device obtains gas through a gas pipe connected to the middle fixed ring 1, the upper end cover 2, the middle fixed ring 1 and a triangular wedge-shaped co-extruded sealing ring 3 formed by contacting the curved surface to seal the upper part of the device The lower end outlet end cover 5 and the middle fixing ring 1 are sealed by the square sealing ring 4, and the gas can only be blown out through the notch 12 of the lower end cover 5, and the gas flow around the cutter is driven during the blowing process. Quickly removes the heat generated by the cutting tool during the cutting process, and achieves the function of tool cooling. At the same time, the high-speed airflow also removes the chipped debris. The device is equipped with a plurality of lower outlet end caps and controls with different shapes and numbers of air outlets. The sheet can be selectively replaced according to the processing environment to achieve the desired gas output result. The lower outlet structure can also be controlled by tilting the position of the manual column 8 of the rotary control piece 6 in the arc groove of the lower outlet end cap. The sheet 6 is rotated to increase or decrease the size of the lower end air outlet, and then the control piece is fixed to the lower air outlet end cover 5 by the tightening nut 7, so that the control piece is The relative position of the outlet end cap remains unchanged until the size of the venting slot is constant. The whole adjustment process is simple, and the control of the amount of gas output is more convenient. The entire slot is distributed in a ring shape, and the gas can be completely from the periphery of the tool. The high-speed gas is blown out in azimuth, the tool is completely cooled, and the high-speed airflow sweeps the waste from the annular multi-directional direction during the cutting process. There is no dead angle in the cleaning process, which makes the cleaning of the waste sand more efficient, and has a significant improvement in the life of the tool. The role. The above description of the invention and its embodiments are illustrative and not restrictive. Therefore, other embodiments are intended to be included within the scope of the present invention without departing from the spirit and scope of the invention.

Claims

The invention relates to a method for integrating air cooling and sand discharging of a tool, which is characterized in that it comprises the following steps:

1) The compressed air from the compressed air source is transported through the air pipe to the tool air-cooling and sand-discharging integrated device;

2) The compressed air is split by the air-cooling of the cutter and the annularly distributed outlet of the exhaust-integrated device to form a uniform high-speed airflow around the cutter;

3) The high-speed airflow of the air outlet takes away the heat on the cutter, and also the waste sand cut by the cutter is blown away from the cutting area; the method for integrating the air-cooling and sand discharging of the cutter according to claim 1, wherein Controlling the size and shape of the air outlet in the air-cooling and sand discharging integrated device by rotating the control piece or replacing the lower air outlet end cover; a device for integrating air cooling and sand discharging of the tool, for implementing the claim 1 or 2 The method for integrating air cooling and sand discharging of the tool, comprising: a middle fixing ring fixed on the positioning shoulder of the electric spindle by a set screw, and an upper end cover connected to the middle fixing ring, fixed with the middle portion The lower outlet structure of the ring connection. The apparatus for air-cooling and sand-discharging integration of a tool according to claim 3, wherein the inlet pipe mounting hole of the middle fixing ring is in contact with the external air pipe. The apparatus for air-cooling and sand-discharging of a cutter according to claim 3, wherein a circular seal seal is disposed between the upper end cap and the middle retaining ring. The apparatus for air-cooling and sand-discharging integrated air according to claim 3, wherein the lower air outlet structure is composed of a lower air outlet end cover and a control piece, and the lower air outlet end cover and the control piece are placed concentrically, and the air is discharged at the lower portion. There is a seal ring seal between the structure and the central retaining ring. The apparatus for air-cooling and sand-discharging of a tool according to claim 6, wherein the lower air outlet end cover and the air outlet on the control piece are provided with different or the same shape and number of slots. The apparatus for air-cooling and sand-discharging of a cutter according to claim 6, wherein the groove on the control piece and the groove on the lower outlet end cover are both annularly uniform. The apparatus for air-cooling and sand-discharging integration of a tool according to claim 6, wherein the control piece adjusts the groove registration degree by the manual column rotation control piece, and the relative direction of the control piece and the lower air outlet end cover is provided by the positioning nut. The position is fixed, and the manual column rotation control piece is disposed on the control piece.