CN105562796A - Step-type layered milling method for narrow-deep slot - Google Patents

Step-type layered milling method for narrow-deep slot Download PDF

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Publication number
CN105562796A
CN105562796A CN201610159077.2A CN201610159077A CN105562796A CN 105562796 A CN105562796 A CN 105562796A CN 201610159077 A CN201610159077 A CN 201610159077A CN 105562796 A CN105562796 A CN 105562796A
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China
Prior art keywords
milling
layer
type
rectangle
processing
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CN201610159077.2A
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Chinese (zh)
Inventor
卞伟宇
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Shenyang Aircraft Industry Group Co Ltd
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Shenyang Aircraft Industry Group Co Ltd
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Priority to CN201610159077.2A priority Critical patent/CN105562796A/en
Publication of CN105562796A publication Critical patent/CN105562796A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor
    • B23C3/28Grooving workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2220/00Details of milling processes
    • B23C2220/36Production of grooves

Abstract

The invention discloses a step-type layered milling method for a narrow-deep slot. The method comprises the following steps: (1) determining the width W and the depth H of a slot to be processed, choosing a cutting tool, assuming that the diameter of the cutting tool is D, determining the milling depth Ap in each feed operation and dividing the to-be-processed slot into N layers, wherein the cross section of each layer is a W*Ap rectangle; (2) and performing step-type layered milling by using a contour processing command in programming software. The impact force to the cutting tool is low during processing, the utilization rate of the cutting tool is high, the processing efficiency is high, and the method is particularly suitable for processing a deep notch, has a remarkably improved efficiency, can be widely applied to the numerical control machining of parts having narrow-deep slots, can significantly improve the processing efficiency of the slot cavity and can improve the product competitiveness.

Description

Narrow deep trouth step layered milling method
Technical field
The present invention relates to a kind of narrow deep trouth step layered milling method, be mainly used in the layering roughing of narrow deep trouth class formation part.
Background technology
Adopt the processing method of step layering when driving narrow deep trouth, technical advantage is particularly remarkable.At present, general engineers and technicians are for narrow deep trouth class formation when numerical programming roughing program, and simple programming scheme has two kinds: one only carries out axial stratification, outputs the notch that groove width is identical with tool diameter; Another kind is first radially layered axial stratification again, outputs the notch closer to part final size larger than tool diameter.But these two kinds of methods respectively have drawback: 1, the drawback of an axial stratification, and often the difference of tool diameter and notch final size is not suitable as allowance for finish, cause fine finishining efficiency low; Because processing rear slot opening, tool diameter is identical in theory, and when part generation cutter relieving, groove width is less than knife bar diameter, without cutting edge shaft portion process comparatively position, deep time can produce with feature side-wall and extrude, even cause cutter to fracture.Identical with tool diameter in theory because processing rear slot opening, the chip removal effect of short angle of throat tool is bad, if select long angle of throat tool can cause again sword underswell expense, and tool strength is lower.2, the drawback of the equal layering of radial-axial, cutter is when radially layered, and the full cutter of the second cutter non-static fields is processed, the full cutter process tool unbalance stress of radial direction of relative first cutter, and working angles is relatively unstable, unfavorable to the life-span of cutter; Compared with only axial stratification, machining path will grow one times, and working (machining) efficiency is too low.
Summary of the invention
The present invention is directed to prior art deficiency, a kind of narrow deep trouth step layered milling method is provided, change traditional diamond-making technique, in process, cutter axial-radial is synchronous layered, the machining locus of forming station stepwise, with the cutting parameter identical with simple axial stratification, process the notch state of radial-axial with layered, the impact that in process, cutter is subject to is little, cutter utilization rate is high, working (machining) efficiency is high, particularly applicable for darker notch, improved efficiency is obvious, can be widely applied in the processing of narrow deep trouth class formation part by numerical control (comprise and cut out part outline from plate), the working (machining) efficiency of vallecular cavity can be significantly improved, improve product competitiveness.
The technical solution used in the present invention is:
Narrow deep trouth step layered milling method, comprises the steps:
1) determine groove width W and the groove depth H of narrow deep trouth to be processed, select cutter, if the diameter of this cutter is D, determines that the cutting-in of each feeding milling is Ap, narrow for processing deep trouth is divided into N layer, the cross section of every layer is the rectangle of W × Ap;
2) use the contour machining order in programming software, carry out the processing of step layered milling, be specially
2.1) first time milling, processing ground floor, the side ground floor milling cross section near notch is the rectangle of D × Ap;
2.2) second time milling, process ground floor surplus and the second layer simultaneously, the cross section of second time milling is L-type, and this L-type minor face is for being positioned at the rectangle that notch opposite side ground floor surplus is (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that the second layer is D × Ap;
2.3) third time milling, process second layer surplus and third layer simultaneously, the cross section of third time milling is L-type, the rectangle of this L-type minor face to be the second layer surplus being positioned at notch side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that third layer is D × Ap;
2.4) the 4th milling is to the N time milling, processing third layer is to n-th layer, and the 4th milling is L-type to the cross section of the N time milling, just L-type minor face position checker, by the side of notch and the opposite side checker of notch, namely repeat step 2.2) and 2.3);
2.5) the N+1 time milling, processing n-th layer surplus, the cross section of n-th layer surplus milling is the rectangle of (W-D) × Ap, completes slot machining.
Described narrow deep trouth step layered milling method, step 1) middle tool diameter D ﹤ groove width W ﹤ 2 × tool diameter D.
Described narrow deep trouth step layered milling method, step 2) use contour machining order in programming software, make the Basic application section for copy type programming, utilize copy type programming instruction to form machining path, carry out the processing of step layered milling.
The present invention has following beneficial effect:
The present invention's narrow deep trouth step layered milling method, adopt step layered milling method, compared with pure axial stratification mode, notch surplus is controlled, is beneficial to fine finishining and puies forward effect, and notch after processing is larger than tool diameter, and there is not the situation of grinding knife bar, chip removal condition is good; With radial-axial with layered mode compared with, each cutter is all the processing of radial full cutter, and working angles is steady, and cutter life is long, and machining path is half less, and working (machining) efficiency can improve more than 90%, and the darker improved efficiency of groove is more obvious.
Accompanying drawing explanation
Fig. 1 is the machining path schematic diagram of the embodiment of the present invention narrow deep trouth step layered milling method.
Detailed description of the invention
Narrow deep trouth step layered milling method, comprises the steps:
1) determine groove width W and the groove depth H of narrow deep trouth to be processed, select cutter, if the diameter of this cutter is D, determines that the cutting-in of each feeding milling is Ap, working groove is divided into N layer, the cross section of every layer is the rectangle of W × Ap; Tool diameter D ﹤ groove width W ﹤ 2 × tool diameter D.When not affecting feed speed, the cutting efficiency that diameter is large is higher, and because tool diameter all participates in cutting, every layer of cutting-in can not be too dark, therefore preferably adopts the cutter of interchangeable bit or form of a blade, reduce cutter loss.
2) use the contour machining order in programming software, make the Basic application section for copy type programming, utilize copy type programming instruction to form machining path, carry out the processing of step layered milling, be specially
2.1) first time milling, processing ground floor is the rectangle of D × Ap near the side of notch at ground floor milling cross section;
2.2) second time milling, process ground floor surplus and the second layer simultaneously, the cross section of second time milling is L-type, the rectangle of this L-type minor face to be the ground floor surplus being positioned at notch opposite side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that the second layer is D × Ap;
2.3) third time milling, process second layer surplus and third layer simultaneously, the cross section of third time milling is L-type, the rectangle of this L-type minor face to be the second layer surplus being positioned at notch side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that third layer is D × Ap;
2.4) the 4th milling is to the N time milling, and processing third layer is to n-th layer, and the cross section of milling is L-type, just L-type minor face position checker, by the side of notch and the opposite side checker of notch, namely repeats step 2.2) and 2.3);
2.5) the N+1 time milling, processing n-th layer surplus, the cross section of n-th layer surplus milling is the rectangle of (W-D) × Ap, completes slot machining.
Embodiment one
As shown in Figure 1, the groove width of deep trouth to be processed is W and groove depth is H, and adopt narrow deep trouth step layered milling method to process, concrete steps are:
1) select diameter to be the cutter of D according to groove width W and roughing made allowance situation, according to groove width W after roughing and tool diameter D, determine cutting-in Ap; Working groove is divided into 13 layers, the cross section of every layer is the rectangle of W × Ap.
2) use the contour machining order in programming software, make the Basic application section for copy type programming, utilize copy type programming instruction to form machining path, carry out the processing of step layered milling, be specially:
2.1) first time milling path, process the 1st layer, the side of close notch is the rectangle of D × Ap at the 1st layer of milling cross section;
2.2) second time milling path, process the 1st layer of surplus and the 2nd layer simultaneously, the cross section of the 2nd milling path is L-type, the rectangle of this L-type minor face to be the 1st layer of surplus being positioned at notch opposite side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that the 2nd layer is D × Ap;
2.3) third time milling path, process the 2nd layer of surplus and the 3rd layer simultaneously, the cross section of the 3rd milling path is L-type, the rectangle of this L-type minor face to be the 2nd layer of surplus being positioned at notch side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that the 3rd layer is D × Ap;
2.4) the 4th milling is to the 12 milling, process the 3rd layer to the 12nd layer, 4th milling is L-type to the cross section of the 12 milling path, just L-type minor face position checker, by the side of notch and the opposite side checker of notch, namely repeat step 2.2) and 2.3);
2.5) the 13 milling, process the 12nd layer of surplus, the cross section of the 12nd layer of surplus milling is the rectangle of (W-D) × Ap, completes slot machining.
By optimum configurations in above-mentioned narrow deep trouth step layered milling method, the working (machining) efficiency derived under various processing mode is as follows:
Narrow deep trouth step layered milling method working (machining) efficiency Pt=(H/Ap+1);
Pure axial stratification milling method working (machining) efficiency Pz=1/ (H/Ap);
Radial-axial is layered milling method working (machining) efficiency Pj=1/ [(H/Ap) × 2] simultaneously;
From above formula, when H is larger, Pt ≈ Pz, Pt ≈ 2Pj.While visible step layered milling method inherits the processing advantage of radial-axial simultaneously layered milling method, improved efficiency is obvious.

Claims (3)

1. narrow deep trouth step layered milling method, is characterized in that, comprise the steps:
1) determine groove width W and the groove depth H of narrow deep trouth to be processed, select cutter, if the diameter of this cutter is D, determines that the cutting-in of each feeding milling is Ap, narrow for processing deep trouth is divided into N layer, the cross section of every layer is the rectangle of W × Ap;
2) use the contour machining order in programming software, carry out the processing of step layered milling, be specially
2.1) first time milling, processing ground floor, the side ground floor milling cross section near notch is the rectangle of D × Ap;
2.2) second time milling, process ground floor surplus and the second layer simultaneously, the cross section of second time milling is L-type, and this L-type minor face is for being positioned at the rectangle that notch opposite side ground floor surplus is (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that the second layer is D × Ap;
2.3) third time milling, process second layer surplus and third layer simultaneously, the cross section of third time milling is L-type, the rectangle of this L-type minor face to be the second layer surplus being positioned at notch side be (W-D) × Ap, and the long limit of L-type is for being positioned at the rectangle that third layer is D × Ap;
2.4) the 4th milling is to the N time milling, processing third layer is to n-th layer, and the 4th milling is L-type to the cross section of the N time milling, just L-type minor face position checker, by the side of notch and the opposite side checker of notch, namely repeat step 2.2) and 2.3);
2.5) the N+1 time milling, processing n-th layer surplus, the cross section of n-th layer surplus milling is the rectangle of (W-D) × Ap, completes slot machining.
2. narrow deep trouth step layered milling method according to claim 1, is characterized in that, step 1) middle tool diameter D ﹤ groove width W ﹤ 2 × tool diameter D.
3. narrow deep trouth step layered milling method according to claim 1, it is characterized in that, step 2) use contour machining order in programming software, make the Basic application section for copy type programming, utilize copy type programming instruction to form machining path, carry out the processing of step layered milling.
CN201610159077.2A 2016-03-18 2016-03-18 Step-type layered milling method for narrow-deep slot Pending CN105562796A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110202192A (en) * 2019-05-28 2019-09-06 闻泰通讯股份有限公司 Improve the milling method of surface roughness
CN110480074A (en) * 2019-08-06 2019-11-22 东莞长盈精密技术有限公司 Milling method
CN110524040A (en) * 2019-07-26 2019-12-03 中国航空工业集团公司济南特种结构研究所 A kind of processing method of step groove
CN111054954A (en) * 2019-12-18 2020-04-24 成都飞机工业(集团)有限责任公司 Method for processing stainless steel aluminum honeycomb sandwich part
CN112059207A (en) * 2020-09-16 2020-12-11 中国航发沈阳黎明航空发动机有限责任公司 Efficient grooving machining method applied to turning

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CN103586519A (en) * 2013-11-25 2014-02-19 长春轨道客车股份有限公司 Trapezoid groove layering milling rough machining method

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110202192A (en) * 2019-05-28 2019-09-06 闻泰通讯股份有限公司 Improve the milling method of surface roughness
CN110524040A (en) * 2019-07-26 2019-12-03 中国航空工业集团公司济南特种结构研究所 A kind of processing method of step groove
CN110480074A (en) * 2019-08-06 2019-11-22 东莞长盈精密技术有限公司 Milling method
CN111054954A (en) * 2019-12-18 2020-04-24 成都飞机工业(集团)有限责任公司 Method for processing stainless steel aluminum honeycomb sandwich part
CN111054954B (en) * 2019-12-18 2021-06-08 成都飞机工业(集团)有限责任公司 Method for processing stainless steel aluminum honeycomb sandwich part
CN112059207A (en) * 2020-09-16 2020-12-11 中国航发沈阳黎明航空发动机有限责任公司 Efficient grooving machining method applied to turning

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Application publication date: 20160511