CN103801901A - Processing technology for rocker arm positioning seat of B-shaped subway structure - Google Patents
Processing technology for rocker arm positioning seat of B-shaped subway structure Download PDFInfo
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- CN103801901A CN103801901A CN201410084883.9A CN201410084883A CN103801901A CN 103801901 A CN103801901 A CN 103801901A CN 201410084883 A CN201410084883 A CN 201410084883A CN 103801901 A CN103801901 A CN 103801901A
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- positioning seat
- arm positioning
- cutter
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- pivoted arm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
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Abstract
The invention provides a processing technology for a rocker arm positioning seat of a B-shaped subway structure. The processing technology comprises the following steps: 1, roughly boring and finely boring an arc surface of a U-shaped groove of the rocker arm positioning seat respectively by a rough boring cutter and a fine boring cutter; 2, milling side surfaces of the U-shaped groove by a three-edge milling cutter; 3, milling an inner cleat of the rocker arm positioning seat by the three-edge milling cutter. On the premise of not increasing new equipment and new tools and fixtures, the processing technology of conventional cutters is improved and optimized under the conventional equipment and the conventional processing conditions, and the conditions that the processing efficiency of the original rocket arm positioning seat is low, and the product processing quality of the original rocker arm positioning seat is unstable are improved, so that the processing efficiency is high, the product processing quality qualified ratio reaches 100%, the technical requirement of drawing design is met completely, and the processing technology reaches an advanced level in the international same industry.
Description
Technical field
The invention belongs to locomotive field of machining, relate in particular to the U-shaped groove processing technology of a kind of Type B subway pivoted arm positioning seat.
Background technology
Type B subway framework is the framework of No. 11 line subways in Shanghai (ZMA100) especially, because the needs of car speed, the pivoted arm positioning seat of bogie frame is complex-shaped, has therefore formed obstruction, has brought very large difficulty to home record and the U-shaped groove of framework entirety processing pivoted arm positioning seat.Use general process tool, cutterhead is large time does not go, and there is no feed and goes out the space of cutter.Cutting-in that cutterhead is little is inadequate again.According to standard cutter and general conventional normal processing technology, the pivoted arm positioning seat of Type B subway bogie frame cannot be processed at all.In order to guarantee that No. 11 line subways in Shanghai (ZMA100) can hand over car on time, engineering department is through technique tackling key problem, designed one the high-speed steel slotting cutter of long 200mm diameter phi 63mm is processed to home record and the U-shaped groove of pivoted arm positioning seat, as shown in Figures 2 and 3.According to the processing characteristics of slotting cutter, the U-shaped groove technology of the pivoted arm positioning seat of design is the complete arc size R42.5 of fine finishining
after mm, the step of the 0.25mm that reprocessing is connected with circular arc, as shown in Figure 1.Because slotting cutter is adding easy cutter relieving in man-hour, the phenomenon in uneven thickness that often can produce two sides step occurs, and even also can produce one side does not have step, and the thickness of another side step is 0.5mm.Therefore, the production efficiency of slotting cutter is very low, and cost is high.
Summary of the invention
Based on the deficiencies in the prior art, one of technical issues that need to address of the present invention are to provide a kind of Type B subway framework pivoted arm positioning seat processing technology, and it comprises the following steps:
1. use boring cutter outside-in, bore the arc surface of the U-shaped groove of pivoted arm positioning seat;
2. use face and side cutter outside-in, mill out the side of described U-shaped groove;
With face and side cutter from top to bottom, mill out the home record of described pivoted arm positioning seat; Its handle of a knife diameter of described face and side cutter is less than the groove width of described U-shaped groove.
As the improvement on the one hand of a kind of Type B subway framework of the present invention pivoted arm positioning seat processing technology: described boring cutter is φ 85mm rough boring cutter and fine boring cutter; Described face and side cutter is φ 200mm face and side cutter.
As the improvement on the one hand of a kind of Type B subway framework of the present invention pivoted arm positioning seat processing technology: in described step 2, the cutting speed of face and side cutter is that 300 ms/min, the amount of feeding are 250 millis m/min.
The present invention changes the processing technology that originally adopted the U-shaped groove arc surface of the φ 63mm high-speed steel slotting cutter processing No. 11 line subways in Shanghai (ZMA100) framework pivoted arm positioning seat first to use into and changes that φ 85mm is thick, fine boring cutter carries out slightly, the U-shaped groove arc surface of right boring, and cutter radial force in the time cutting is changed over to axially loaded.The circular arc of R42.5mm changes boring into by former Milling Process and processes the generation of also having avoided chatter mark.
Use again the U-shaped groove of the face and side cutter milling side of φ 200mm, avoided causing the interrupted phenomenon of 0.25mm step to occur with the φ 63mm slotting cutter processing U-shaped groove cutter relieving of pivoted arm positioning seat.
In the time of the home record of processing pivoted arm positioning seat, the cutting-in of φ 200mm face and side cutter is 55mm, can process U-shaped groove side.But the width that processes U-shaped groove is 85mm, and the shank diameter of the φ 200mm face and side cutter of standard is 90mm.Handle of a knife diameter causes not going under cutterhead than the large 5mm of the width of U-shaped groove.Therefore the shank diameter of the φ 200mm face and side cutter of standard is removed to 5.5mm by lathe, the intensity that so neither affects cutter has solved again the problem of processing pivoted arm positioning seat.
Compared with prior art, the present invention in the situation that not increasing new equipment and frock clamp, just under original equipment and processing conditions, to existing cutter improve, optimization processing technology.Make the working (machining) efficiency of former pivoted arm positioning seat low, the unsettled situation of product processing quality becomes that working (machining) efficiency is high, product processing quality qualification rate reaches 100%, meets the technical requirement of layout design completely, reached the advanced level of international counterparts industry.
Describe the present invention in detail below in conjunction with accompanying drawing, it illustrates principle of the present invention as the part of this description by embodiment, and other aspects of the present invention, feature and advantage thereof will become very clear by this detailed description.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.
Fig. 1 is subway framework pivoted arm location seat structure schematic diagram;
Fig. 2 is slotting cutter processing pivoted arm positioning seat home record schematic diagram;
Fig. 3 is slotting cutter processing pivoted arm positioning seat U-lag schematic diagram;
Fig. 4 is boring cutter boring pivoted arm positioning seat U-lag circular arc schematic diagram;
Fig. 5 is face and side cutter milling pivoted arm positioning seat U-lag side schematic view;
Fig. 6 is face and side cutter milling pivoted arm positioning seat home record schematic diagram.
In figure: 1-arc surface; 2-side; 3-home record; 4-step; 5-boring cutter; 6-face and side cutter; 7-slotting cutter.
The specific embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
A kind of Type B subway framework pivoted arm positioning seat processing technology, it comprises the following steps:
1. with boring cutter 5 outside-ins, bore the arc surface 1 of the U-shaped groove of pivoted arm positioning seat, as shown in Figure 4.
2. with face and side cutter 6 outside-ins, mill out the side 2 of described U-shaped groove, as shown in Figure 5;
3. use face and side cutter 6 from top to bottom, mill out the home record 3 of described pivoted arm positioning seat; Described face and side cutter 6 its handle of a knife diameters are less than the groove width of described U-shaped groove, as shown in Figure 6.
Above-mentioned boring cutter 5 is φ 85mm rough boring cutter and fine boring cutter; Described face and side cutter 6 is φ 200mm face and side cutter.
In above-mentioned steps 2, the cutting speed of face and side cutter 6 is that 300 ms/min, the amount of feeding are 250 millis m/min.
After improving, newly-designed processing technology has not only solved the problem that the pivoted arm positioning seat of Type B subway framework cannot be processed at all, and quite desirable through the checking reliability of producing in enormous quantities, and working (machining) efficiency is high.Take Shanghai, No. 11 line subways (ZMA100) are as example, altogether process No. 11 line subways in 631 Shanghai (ZMA100) framework, the framework pivoted arm positioning seat time of required 4 hours of former processing, processing a framework pivoted arm positioning seat by process improving only needs 1.5 hours, has saved 2.5 hours.Produce cost calculation by the one-tenth of 22 yuan/hour: 631 × 2.5 × 22=34705 unit.A φ 63mm high-speed steel slotting cutter can only be processed 3 frameworks, and blade is every is 1860 yuan the unit price of slotting cutter, and each framework consumes cutter and takes 620 yuan; The face and side cutter sheet of a slice φ 200mm can be processed 5 frameworks, and the unit price of every blade is 98.28 yuan, and each framework consumes cutter and takes 19.66 yuan.Average each framework is saved cutter and is taken 620-19.66=600.34 unit.Save altogether cutter expense 600.34 × 631=378814.54 unit.This has just saved 631 × 2.5=1577.5 hour in man-hour the processing No. 11 line subways in Shanghai (ZMA100) framework pivoted arm positioning seat, the 34705+378814.54=413519.54 unit of reducing expenses, and economic benefit is huge.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a Type B subway framework pivoted arm positioning seat processing technology, is characterized in that: comprise the following steps: with boring cutter (5) outside-in, bore the arc surface (1) of the U-shaped groove of pivoted arm positioning seat 1.; 2. with face and side cutter (6) outside-in, mill out the side (2) of described U-shaped groove; 3. use face and side cutter (6) from top to bottom, mill out the home record (3) of described pivoted arm positioning seat; Its handle of a knife diameter of described face and side cutter (6) is less than the groove width of described U-shaped groove.
2. Type B subway framework pivoted arm positioning seat processing technology according to claim 1, is characterized in that: described boring cutter (5) is φ 85mm rough boring cutter and fine boring cutter; Described face and side cutter (6) is φ 200mm face and side cutter.
3. Type B subway framework pivoted arm positioning seat processing technology according to claim 1, is characterized in that: in described step 2, the cutting speed of face and side cutter (6) is that 300 ms/min, the amount of feeding are 250 millis m/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084883.9A CN103801901B (en) | 2014-03-10 | 2014-03-10 | A kind of Type B subway framework pivoted arm location seat complete processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084883.9A CN103801901B (en) | 2014-03-10 | 2014-03-10 | A kind of Type B subway framework pivoted arm location seat complete processing |
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| CN103801901A true CN103801901A (en) | 2014-05-21 |
| CN103801901B CN103801901B (en) | 2016-06-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080189944A1 (en) * | 2003-07-09 | 2008-08-14 | Schaeffler Kg | Method of Making an Outer Lever of a Switchable Finger Lever |
| CN101698411A (en) * | 2009-10-30 | 2010-04-28 | 长春轨道客车股份有限公司 | Butting structure of vertical plate and saddle of positioning seat of bogie and manufacturing method thereof |
| CN103042344A (en) * | 2011-10-12 | 2013-04-17 | 烟台金王礼品有限公司 | Manufacturing process for U-shaped connecting block |
| CN103071984A (en) * | 2013-01-09 | 2013-05-01 | 鞍钢重型机械有限责任公司 | Processing method for connecting rod |
-
2014
- 2014-03-10 CN CN201410084883.9A patent/CN103801901B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080189944A1 (en) * | 2003-07-09 | 2008-08-14 | Schaeffler Kg | Method of Making an Outer Lever of a Switchable Finger Lever |
| CN101698411A (en) * | 2009-10-30 | 2010-04-28 | 长春轨道客车股份有限公司 | Butting structure of vertical plate and saddle of positioning seat of bogie and manufacturing method thereof |
| CN103042344A (en) * | 2011-10-12 | 2013-04-17 | 烟台金王礼品有限公司 | Manufacturing process for U-shaped connecting block |
| CN103071984A (en) * | 2013-01-09 | 2013-05-01 | 鞍钢重型机械有限责任公司 | Processing method for connecting rod |
Non-Patent Citations (1)
| Title |
|---|
| 曹应祥: "曲轴强力开档铣削与三面刃铣刀", 《内燃机》 * |
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| CN103801901B (en) | 2016-06-08 |
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