CN2652590Y

CN2652590Y - Temperature detector when cutter rotating at high speed

Info

Publication number: CN2652590Y
Application number: CN 200320116881
Authority: CN
Inventors: 全燕鸣; 林金萍; 王成勇
Original assignee: South China University of Technology SCUT
Current assignee: South China University of Technology SCUT
Priority date: 2003-10-10
Filing date: 2003-10-10
Publication date: 2004-11-03
Anticipated expiration: 2013-10-10

Abstract

A cutting temperature measuring device used in the cutting process of the high-speed rotation of the cutting tool of the processing machine tool: a copper intermediate ring sleeve is installed between the high-speed rotating tool chuck and the tool, and an outer ring groove is opened on it, and the copper connection line It is sleeved in the outer ring groove of the middle ring sleeve and tensioned on the insulating support where the head of the machine tool and the tool are displaced synchronously, and then extended to the electronic amplifier. Another copper wire is drawn from the workpiece insulated from the machine tool and connected to the electronic amplifier. The amplifier is then connected to the display output device; the workpiece is cut into several pieces by wire according to the needs, and a number of ultra-fine standard thermocouples are embedded along the length, width, and height, and then restored to form a whole. The device has a simple structure, is suitable for use on high-speed machine tools such as vertical drills, end mills, and machining centers, and can directly measure the interface temperature between the tool and the workpiece and measure the temperature distribution in the workpiece.

Description

Temperature measuring equipment during the cutter high speed rotating

Affiliated technical field

The utility model relates to a kind of temperature measuring equipment in machining tool cutter high speed rotating working angles, can direct contact type measure Temperature Distribution in cutter-workpiece interface temperature and the one-point measurement workpiece.

Background technology

Heat in metal cutting and consequent cutting temperature are to analyze the important evidence that cutter galls damage state and crudy, because cutting temperature directly influences in the tool bodies and thermal stress distribution and institutional framework thereof in the workpiece body.High speed machining is increasingly mature along with the development of numerically controlled processing equipment and high-performance process tool technology.Yet expensive cutter will obtain rational serviceable life and working (machining) efficiency and obtain satisfied workpiece quality, just must test drawing reasonable process conditions.During high-speed cutting, cutter changes scooter per minute several ten thousand and changes, and in the measurement of this condition bottom tool and workpiece interface temperature, especially realizes the direct contact type measurement, is a difficult problem.Up to the present, the measurement of cutting temperature under the cutter high speed rotating situation only appears realizing with indirect contactless method such as infrared measurement of temperature method, optical heat radiation thermometry, do not see as yet and anyly can realize that direct contact type under the vertical cutter high speed rotating situation measures the patent of cutter and workpiece interface temperature with traditional natural thermocouple thermometry, do not see line cutting subdivision workpiece yet, be assembled into integral body again after burying superfine standard couple underground, be used for the patent that the temperature field distributes in measuring workpieces surface temperature and the body.

Summary of the invention

The purpose of this utility model be disclose a kind of with the direct contact type of natural thermocouple principle measure rotary cutter-workpiece interface cutting temperature and utilize standard couple one-point measurement surface of the work and body in the device of cutting temperature.This temperature measuring equipment comprises the middle ring set that is contained between cutter holder, the cutter, synchronous support, line, electron-amplifier, standard couple, workpiece, demonstration and recorder.

The technical scheme that its technical matters that solves the utility model adopts is: ring set in the middle of the red copper is being installed between the cutter chuck of high speed rotating and the cutter, have outer groove on this ring set, in the middle of the red copper line is socketed on the outer groove of ring set and cause and be tensioned on the insulating support of machine tool head and cutter maintenance synchronous shift, flexible again one of the interface of electron-amplifier that extends to of wiring and is drawn another root red copper line on the workpiece of machine insulation and is flexibly connected another interface to electron-amplifier; When cutter contacts with workpiece, just form natural thermocouple like this.Cut into some with line as required on the workpiece, recover to be combined into integral body after length is imbedded some superfine standard couples, standard couple is connected to electron-amplifier.Electron-amplifier connects output display unit.

The beneficial effects of the utility model are: this apparatus structure is simple, is applicable on high speed lathes such as vertical drill, vertical milling, machining center and uses, and can directly measure Temperature Distribution in cutter and workpiece interface temperature and one-point measurement surface of the work and the body.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the principle schematic of the utility model device.

1. cutter chucks among the figure; 2. cutter; 3. ring set in the middle of the red copper; 4. red copper line; 5. machine tool head and cutter keep the insulating support of synchronous shift; 6. electron-amplifier; 7. workpiece; 8. standard couple; 9. show, write down output device.

Embodiment

Below in conjunction with accompanying drawing specific embodiments of the present utility model is described in detail:

Ring set (3) in the middle of the accurately machined red copper is being installed between the cutter chuck (1) of machining tool high speed rotating and the cutter (2), this ring set has suitable length to expose the cutter holder end face, on the external cylindrical surface of this exposed length, have the arc section outer groove, the red copper adapter ring puts and is with insulation sleeve, makes cutter and machine insulation.For making the cutter holder clamp-on tool, can on red copper ring set (3), open longitudinal joint to compensate for the plastic yield of red copper.Red copper line (4) is socketed on the outer groove of (3) and causes and be tensioned on the insulating support (5), insulating support (5) is fixed on machine tool head, with chuck (1), cutter (2), red copper ring set (3) keeps synchronous shift, pick out red copper line (4) from insulating support (5) and prolong one of interface that is connected to electron-amplifier (6) flexibly, with draw another root red copper line (8) on the workpiece (7) of machine insulation and flexibly connect to another interface of electron-amplifier (6), when contacting with workpiece, cutter just formed natural thermocouple like this, heat in metal cutting caused electric potential difference in this natural thermocouple is recorded after electron-amplifier (6) amplifies in the working angles, Displaying Meter (9) continuous recording, show or by computer acquisition, contrast natural thermocouple voltage and scale of thermometer definite value just can be read cutter and workpiece interface cutting temperature and be drawn the cutting temperature dynamic changing curve; Workpiece (7) cuts into some with line as required, imbed some superfine standard couples (8) back along length and recover to be combined into integral body, standard couple (8) is connected to electron-amplifier (6), the voltage signal of electron-amplifier (6) output connects demonstration, recording unit (9) or by computer acquisition, contrast thermocouple voltages and scale of thermometer definite value go out workpiece and are cut the continuous changing value of the cutting temperature of fixing a point in surface and the body and draw temperature distribution history with regard to readable.

Claims

1. cutting temperature measurement device that is applied under the machining tool cutter high speed rotating situation, it comprises ring set in the middle of the red copper that is contained between cutter holder and the cutter; Be socketed on the red copper line on the ring set; The synchronous support of insulation of tensioning red copper line; Line cut into some be assembled into again after immersioning thermocouple integral body and with the workpiece of machine insulation.This device is characterised in that: the middle ring set of accurately machined red copper is installed between cutter holder and cutter, has outer groove on this ring set.

2. measurement mechanism according to claim 1 is characterized in that: the red copper line is socketed in the outer groove of the middle ring set of red copper.

3. measurement mechanism according to claim 1 is characterized in that: the red copper line is tensioned on the synchronous support of insulation, keeps being synchronized with the movement of line and cutter.

4. measurement mechanism according to claim 1 is characterized in that: workpiece alignment cut into some be assembled into after immersioning thermocouple whole again and and machine insulation, bury thermopair and survey workpiece temperature and distribute at the difference place.