SU1342690A1 - Method of machining materials by cutting - Google Patents

Abstract

The invention relates to metalworking, in particular to methods for cutting materials with cutting coolant (cutting fluid) for crushing chips and cooling the cutter. The aim of the invention is to increase the efficiency of chip breaking by creating pulses in the coolant flow of given parameters. When the cutting edge 2 of the cutter interacts with the part 6, chips 7 are formed, which move along the front surface 3 of the cutter and stick to it, forming build-up 8. Coolant through the channel 4 is fed to the front surface 3 of the cutter and wets it. By creating pulses in the coolant with a pressure of 20-30 MPa, a frequency of 1-5 TC and an energy of 150-200 J, the growths 8 of the chips 7 are torn off and the latter is destroyed. 1 il. i cl Zone structure nkoo5raeo ani co 4 yu 05 so O

Description

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The invention relates to metal; h) 1igig1 (I, a. To ciiocooiivi ciSi-;,; in.iTi.:n matorippop cutting with feed: - (.. iinM-oxn i.-K / iiHiiiiMM liquid .i .) splitting chips i oh. pR AND a.

The purpose of the invention is to increase the efficiency |}) Cktin1 og of fragmentation due to the creation of pulses in the flow of coolant given parameters.

Pa drawing shows the scheme of the proposed method.

The cutter, with the rioN ombro of which the proposed method can be carried out, contains i; opnyc 1 with a cutting edge 2 and a front surface 3. In the housing

1NOL front surface 3 channel 4 with access to the anterior ppt surface 3. B dropping 4 placed K1.: Ktr d 3. The second ectrode is Knjiiivc: po: 4t, a. The cutter is connected by channel 4 to a coolant supply system (not shown)

and; lekch r11ches; ko; | line to create a pitch to ijiaHHOi i frequencies) (not shown).

 It is as follows: o (-, |:) azok i

With cutting edge taimodeyshp

2ro.: G;., And with machin1 1 by the detail of 6 oPrazurts chip 7, which has a variable, 11 ,, v ui 1k; redi1 neron1stI 3 1- Сз ;; a. Haught on - - shade by length con :; .: ..: ui / g;: - 1-sd1111 bottom. Tew 3 cutters are characterized by high and compactness. In that part, the cop i.ii-, ha co-mountain ojnuiKO is adjacent to the re (i.:iV) MKe 2: Ezpa, in contact 1 cutter. This is where the Oiley appear: its adhesion forces, the call-i-i d-jii:; 11 bH iHHi of a biting contact layer of chips 7 from the front one-to-one .---; / K tschla: -n: 1; The effect of transferring the material is i-H iJi i: TA:; i i 7 n-j incisor and em growth 8, the appearance of which is :-: iii-. isenHO changes the geometry of the edge 2, especially its radius of rounding, h; about 0 (1 vi: molly amplification nrodol; .1Т о hex 1 У1) ир1) chips 7.

T; (iivetiH machining of parts 6 on ired11} o; o iione ixHoci b 3 is coolant. Ta

Circulation 785

.- NILSHI Order 4582/13

Iroziv-gtolig r. pr-tie, Uzhgorod, st. Project, 4

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em (watering), it wets the cutter surface, but does not remove the build-up of 8. G1l removing the next in the coolant creates pressure pulses of not less than 20-30 MPa at a frequency of -5 Hz and energy of 150-200 J, which destroy the very chips 7.

Under the action of high impulse pressure, the coolant penetrates along the entire length of the contact zone of chips 7 with the front surface of the 3 cutters along the interfacial pores and capillaries,

lubricates contact surfaces, build-up 8 is crushed, chips 7 are destroyed. A significant decrease in friction leads to a transition to boundary friction without significant secondary

plastic deformation of the contact layer of chips 7. In this case, the entire thickness of the chip 7 penetrates a uniform transverse texture.

The action of the coolant pulse occurs for a short time, and the friction between the contacting surfaces of the chip 7 and the cutter increases, which again leads to the formation and increase of the inhibited layer. At some point, the next growth 8 is formed and a pronounced longitudinal texture is again observed in the contact layer of the converging

shavings.

Under the action of the next high pressure pulse resulting from the electrical discharge in the liquid, the next portion of the coolant enters the contacting surfaces of the chip 7 and the cutter, and the cycle repeats.

Claims (1)

Invention Formula The method of processing materials reeappem, in which the lubricating coolant (coolant) is fed into the zone The front surface of the cutter body, characterized in that, in order to improve the chip crushing efficiency, pressure impulses of 20-30 MPa, frequency 1-5 Hz and energy 150-200 J are created in the coolant. Circulation 785 Subscription