Helix raceway milling machines those who abstain cutting tool to discuss inside

My company is involved inside the product measure that helix raceway machines is very much, main show is a variety of pitch, a variety of in diameter. Is normally working procedure arrangement my company: ? Does Bao see  alone  ? ---Kibble raceway makes sure appearance is mixed in diameter----Essence of life grinds raceway.

Raceway treatment held total working procedure to produce cycle 5 into above. And, the use cost of raceway broach is higher also, use requirement is very strict also, these all are become produce what can promote is short board, incommensurate increase the productivity, development strategy demand that reduces manufacturing cost. Helix raceway is comprised by two paragraphs of eccentric arc, the only φ with raceway the smallest bottom outlet 29, have a variety of pitch (pitch T=11, 10, 9.

525, ... ) , raceway adds man-hour existence interrupted cutting. My company produces craft to use treatment of broaching of special helix broach formerly, odd spend man-hour 4 minutes. Helix broach oneself is compared one kind namely complex and costly special cutting tool, blade of oneself of precision of school precision, machine tool slideway, cutting tool is moved to grind to cooling environment, tool when using wait for a requirement all very tall, and wear away as the use of cutting tool oneself, spare parts dimension also changes subsequently. Must assure dimension and correction raceway appearance through kibble working procedure.

These cause production directly cost is very high, go against improve manufacturing efficiency. 2, initial plan can promote to drive a company to produce, I consider to use other efficient treatment. Think of to use raceway of the helix inside treatment of milling cutter of corn tine helix above all.

But via be being discussed at engineer of relevant cutting tool, combine characteristic of structure of spare parts oneself, be aimed at milling cutter of corn tine helix incommensurate much pitch, cost is advanced characteristic. The treatment technology program that decides to develop cutting tool to use milling whorl by oneself finally. Below each conformity of square experience, combine the characteristic of complex and big pitch of product helix raceway, sectional appearance, the treatment current situation of raceway of the helix outside drawing lessons from, I make consummate shape with razor blade of YT15 hard alloy bit, solder 4 cutter hub to undertake to arbor blade is ground again amend. Cutting speed υ is taken when try out =65m/min, = 800n/min of knife of ν of cutting tool rotate speed, = 32n/min of labour of ν of workpiece rotate speed.

Adjust fine installation to begin to try treatment. Milling is cost 3.

5 minutes, spend man-hour a bit quickly at broaching craft. Ra6 of surface roughness of surface of the raceway after milling.

3 μ M. Inside raceway 70mm in diameter error is achieved 0.

08mm, but can accept. Classics is successive the horn after after machining 10, discovering bit carries blade on the head begins to wear away, workpiece helix rolls occurrence Zhen Wen. The horn after the razor blade after machining 40 continuously carries blade on the head wears away badly appear sound of the bray that plunge into a knife, stop a test. 3, of plan optimize a course to analyse further, discovery is like next elements to affect the durability of cutting tool: The diameter in raceway of the helix inside ① slants small, only φ 30; ② because structure of spare parts oneself, cutting tool is put in interrupted cutting; ③ cutting deepness is too big, amount to 3.

5mm; Type selecting of ④ arbor material is unreasonable, structural stiffness is insufficient; ⑤ is self-restrained shape the geometrical precision of bit is put in bigger error. Be aimed at numerous and adverse element, I decide to expect bit material by material of HSS of high-speed steel of instead of YT15 hard alloy, design arbor structure of integral type taper in order to raise cutter hub stiffness, modification knife head is relevant parameter, provide cutting tool blueprint by professional tool manufacturer outside assist production, assure cutting blade appearance and precision by tool manufacturer. Manufacturer of very fast tool delivers two eligible cutting tool, cutting tool is only a quote 110 yuan. When the 2nd round of try out, draw lessons from tool manufacturer to suggest to revise cutting parameter, take cutting speed υ =37m/min, = 400n/min of knife of ν of cutting tool rotate speed, = 20n/min of labour of ν of workpiece rotate speed.

Use 3-5% emulsion to undertake cooling. After machining 30 continuously, cutting tool begins to appear wear away.

Stop a test again. Parameter of circumstance readjust cutting is aimed at after blade grinds cutting tool: Cutting speed is υ =25m/min, = 250n/min of knife of ν of cutting tool rotate speed, = 24n/min of labour of ν of workpiece rotate speed. Consider deepness of penetration of a cutting tool is too big, the decision divides second feed, deepness of penetration of a cutting tool of the first knife is 2.

5mm, the 2nd knife is 1-1.

5mm. Try treatment again, raceway surface surface roughness can achieve Ra3.

2-Ra6.

3 μ M, error of the diameter in raceway around is in 0.

Inside 05mm limits.

Odd a manufacturing man-hour about 4 minutes, as odd as broaching craft time-consuming keep balance.

The horn after a blade just appearing after machining 80 continuously wears away.

The experiment proves, improve the result very apparent, adopt measure special satisfy the need. circumstance of actual try out and tool manufacturer the home has communication, the decision is opposite again parameter undertakes improvement related cutting tool: The horn after will carrying blade on the head by so 6 ° increase 8 ° , will before horny shift is little to 4 ° . Again fruit of try out aftereffect is very apparent, successive treatment 100-150 cutting tool just needs blade to grind nap. Broaching of summary prep above machines class crop, can finalize the design production. Classics batch makes cutting tool, cutting tool is only cost fell 80 yuan. 4, the use that the effect compares this milling technology, through the normal production test and verify of 9 months, report of manufacturing a gleam of is better, got workshop leader and worker reputably. Via investigating statistic, the craft that is aimed at this working procedure innovates, make the workshop is in crop promotion, energy-saving fall bad news respect gets a lot of material benefit, basically be like next advantages: 1, abstain raceway of milling cutter mill relatively broach broaching is managing cutting tool cost, business accounting arrives odd can make cost is reduced on the spare parts 18% ; 2, dimension of the diameter in raceway of completely OK and unified spare parts, avoided to because broach wears away,be put in the confused situation of all sorts of different measurement before; 3, same all sorts of kind of milling cutter is OK and applicable differring the spare parts treatment of the pitch, diameter in differring, abandoned different product to need the situation that a variety of broach machine; 4, the assurance as a result of milling raceway quality and dimension, cancelled raceway kibble working procedure, shortened greatly production is periodic, managing the resource such as equipment staff. More promoted forthrightly produce can. 5, foreground looks into part of the knife handle after be being used considering integral type cutting tool to discard subsequently wasted fixed cost, provide manufacturer to be communicated further via Yu Dao, preparation will rectify instead of milling cutter of HSS of form of characters or letters to be like the bit body structure that the graph shows 7 times next, key of use fixed position locates, m6 bolt clamp, make fission type structure. After cutting tool wears away, repair only grind small bit body, arbor is intact. So OK further cost of managing cutting tool and reduce the time that change a knife. Considering the integral stiffness of fission type cutting tool, use different inside aperture (the way in raceway is different) the arbor that makes series of corresponding lever diameter will solve. Milling craft is in raceway kind after the success on the product is used, I prepare to popularize this craft the company next other kind on product treatment, like: ? Does oil spin collect of calumnying Yan frequency to need ぃ  complains collect of Zhang of Liao of  hare Qian to need さ takes  of  of N  provide for to use up Ang ひ to touch  of  of Rong of green approach  to divide persimmon Bi Zhu of grave of Shan of  of gum of handsome fraud Qiao? CNC Milling CNC Machining