The numerical control process designing of vitta whorl taper

  • Time:
  • Click:130
  • source:XIMENG CNC Machining
Gauge of whorl of oil oil tube is very rocky the join part of oily fittings is the vitta thread that has strict and sealed demand mostly. Normally these products if short of is sealed the requirement thinks its off quality, be based on this just about, more and more manufacturer homes begin to use numerical control lathe to machine the whorl of this kind of higher demand. And measuring instrument of use whorl individual event detects whorl precision, is not pure hydrostatic testing. The main factor with influence vitta normally sealed whorl is: Tooth, taper, pitch. Among them tooth assure through using figuration cutting tool commonly now, it is OK that pitch detects through individual measuring instrument more intuitionistic wither is whole, only taper needs consideration. In process of machine program work out many process designing personnels still are calculated with trigonometric function taper or won't according to individual measuring instrument detect result and specific requirement will adjust a program. Because taper cannot be changed into angle by accurate ground normally, calculate with angle so namely trival fluky. Actually taper and the data that process designing requires have natural connection. Exemple: If the graph shows 1 times,dimension of the whorl outside 7/8TBG vitta and treatment coordinate department install: Taper length: 52.

4+4=56.

4(mm) ; Taper diameter change measures: 56.

4/16=3.

525(mm) . Cutting tool start: Z: 4; X: 73-3.

525=69.

475. Turning taper program can write for: G00 X69.

475Z4 (speed arrives start) G01 U3.

525W-56.

4F0.

Taper of 3 (turning) when turning did not retreat the whorl of knife chamfer, appropriate uses statement of loop of G92 whorl cutting, this instruction is had return knife function automatically, so won't cut whorl surface. Vitta threading machine is shown 2 times like the graph, here introduces this directive simply: Statement form: G92 X(U) _Z(W) _R _ F _ among them: P1 is initial drop, x(U) _Z(W)_ is the coordinate of whorl terminus P3. P3P4 is the distance that retreat a knife. R is cutting terminus P3 is measured to the X axial of start P2 (the half amount that has a sign, if the X coordinate of cone start P2 is more than the X of terminal P3,be when coordinate be worth) . R is the parameter that controls taper. It is like taper 1: 16, criterion the absolute value of R is: L/(16 × 2) , as above exemple, point of a knife is 10mm to end panel, the P3P4 that retreat a knife measures for 1mm(unilateral) criterion: Awl whorl length: 52.

4+10=62.

4(mm) R value: - [62.

4/(16 × 2)]=-1.

95 pitch: Every 25.

4mml0 tooth, namely 2.

54mm. Criterion car whorl program is: Speed of G00 X75 Z10 (arrives start) G92 U-3.

2W-62.

4R-1.

95F2.

54 (feed 3.

2-2=1.

4-3 of feed of 2) U-4 (.

2=0.

8) U-4.

5 (feed 4.

5-4=0.

5) U-4.

84 (feed 4.

84-4.

5=0.

34) presses taper requirement process designing: What measuring instrument of vitta whorl individual event measures is 25.

The change of the diameter on 4mm length is measured, if make the same score type vitta whorl every 25.

4mm10 tooth, measure the metabolic volume of the diameter on 10 pitch. Taper is a ratio, the circumstance with consistent unit leaves pass the time in a leisurely way of two balance each other, the number that turns a boundless into key link. Be like taper 1: The standard reading of 16 should be: 1/16=0.

0625, number showing disrespect or contempt should be taper dial gauge 62.

5. Some produce the treatment quality with better to assure manufacturer, to the control of taper limits made strict provision, its are optimal the value is not certainly 62.

5, must meet when process designing be worth process designing according to first-rate taper. Be like set optimal taper to be worth for 0.

065, right now the following relation holds water: Taper length is L, diametical change measures: 65 × of L × 0.

001. The absolute value of R: (65 × of L × 0.

001)/2. Press taper 65, adapt above the program has: When Che Zhui spends: Taper length: 56.

4mm. Taper diameter change measures: 56.

65 × of 4 × 0.

001=3.

666mm. Coordinate of X of cutting tool start: 73-3.

666=69.

334 programs: G00 X69.

3324 (speed arrives only then dot) G01 U3.

666W, 56.

4F0.

Taper of 3 (turning) when car whorl: Taper length: 62.

4The absolute value of R: (62.

65 × of 4 × 0.

001)/2=2.

028 programs: Speed of G00 X75 Z10 (arrives P1 only then dot) G92 U-3.

2W-62.

4R-2.

028F2.

54U-4 U-4.

5U-4.

84 when asking without special taper, can press process designing of the first kind of method. When having a demand to taper, should press process designing of the 2nd kind of method. When undertaking adjustment to taper, can consult to ask to make up decided program to undertake adjustment by taper. CNC Milling CNC Machining