Gao Mj Screw Hole Cutting Tools To Extend The Life Of The Improvement Program

Since from January 2008, MJ screw hole with a minor

, tooth loss and surface roughness value is high, and the processing occurs after the thread can not pass regulatory situation, accelerated tool wear, the average processing 15 to 30 will need to ATC. Site-specific circumstances, the design of the final from the tap to make the following two improvement program.

(1) Option 1 already worn off tap, after re-grinding the surface coating.

Under the present circumstances, consider thread bottom diameter of control in the ceiling to reduce the wear tap, improving tap life. In tap inventory permitting MMSonline.com.cn Copyright, currently as little as possible to use heavy grinding tap, because life tap after heavy grinding inconsistent, it is prone to mass production of threaded screw holes in individual cases failed, but also increased inspection and repair workload. If you had to use heavy grinding tap, after re-grinding the surface coating, will tap the diameter increased to ensure that the tap in diameter pass.

Currently has a small tap in diameter, or processing of the first piece of Japan OSG recently failed thread tap, commissioned Measuring Meter Plant of Dongfeng's tap re-used after grinding the surface coating, Japan OSG Taps can be surface coating, the diameter painted 6 m, to test whether the processing of eligibility, and collect the life tap situation.

(2) Scenario 2 with the new tap in the method of 0.01mm diameter increase, respectively Dongfeng Measuring Meter Factory, Japan, OSG, Wuxi New Age and Zhuzhou Diamond Cemented Carbide Taps to do experiments.

Measuring Meter Plant of Dongfeng Company Taps

Common tool materials are high-speed steel, improving the pre-install a new blade can process 30, processing the screw hole surface roughness can meet the requirements to ensure through regulations only pass the inspection. Grinding of the old tap surface coating, about 30 pieces of life, relatively high surface roughness. Main reason may be due to post-industrial automation tap coating network edge will become blunt, resulting in not very sharp cutting edge, resulting in higher surface roughness.

Has to tap in diameter on the basis of the original and the increased 0.01mm 0.02mm, each producing 10 trials. First test of 0.01mm diameter to increase the tap (K23D2-128C) (Test Hole No. 6003,6005,6007,6009,6011,6013 and 6015), first article inspection hole than 6007 regulations only go in two buckle, the rest are qualified, so far has processed more than 220 (tap in diameter can not increase the pre-processing 25 or so), judging from the tap wear, you can continue processing.

Later on tap in the tap 0.02mm diameter increase was tested (K23D2-128D) (Test Hole No. 6003,6005,6007,6009,6011,6013 and 6015), first article inspection rules than 6007 holes only into the 4 button left and right, others were qualified, the ultimate life of 300 pieces.

Judging from the above two tests, tap and increase in diameter greater 0.01mm 0.02mm, except for 6007, the others are passing hole machining, spindle 6007 may be due to bigger beat, resulting in only two tests were both into the regulation 2 button and 4 button. 0.01mm in diameter increased after the tap, tap life increased from 25 to about 220 now, life has been a substantial increase in tap, tap tap change in the path of life itself have a significant impact.

In order to explore the most economical and most suitable diameter size and the tap tap of material has accumulated experience in processing MJ threads, January 14, 2008, we set a 400 increase in diameter 0.015mm the tap, waiting for test .

Japan OSG Taps

The tool is sensitive to temperature change, summer temperatures are high fashion a knife can produce 200 to 300, but winter can only produce 60 to 70, and threaded holes for processing high surface roughness.

Tap is made of HSSE (including cobalt high speed steel), surface coating, life is about 20, the surface roughness is relatively low, the new arrival of the first pieces of a group of tap processing through rules get in on the situation there.

Wuxi tap new era

Ordinary high speed steel cone, put a knife to produce 50 to 60, but the quality of the cutting tool metalworking mixed network, the size of a very unstable process, a loaded 12 knives often have 1 / 3 of tooling threaded hole failed. Because of this tool is very unstable product quality, processing, test results is not obvious.

Zhuzhou Diamond Cemented Carbide Taps

Set the increase in Zhuzhou cemented carbide tap in diameter designed 30 experiments, according to production statistics have been processed more than 2,200 qualified Kong continue to use and processing of the screw hole low surface roughness.

The above study implies that moc.swenaii.www, Dongfeng measuring measuring instruments designed high-speed steel plant in Zhuzhou Diamond Cemented Carbide Taps Cone and more successful experiment, carbide cutting tools on the unit price in terms of an ordinary high speed steel tool 20 times, but Carbide's life is several times high-speed steel, which greatly reduces the cost and improve economic efficiency.

All rights reserved comprehensive network of industrial automation on a reasonable tool designed to improve the utilization of tools, the use of advanced tools for improving product quality and reduce costs is beneficial.

by: gaga

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