Application of efficient gear hobbing carries out civilian battalion enterprise

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  • source:SEENER CNC Machining
Lie as intense the enterprise of gear finish machining that contends for unexpectedly, the treatment club business that waits for day to fasten enterprise autocycle high speed to age as wood of this cropland, bell, Yamaha, as produce per year 2 ten million the enterprise of gear. High accuracy and efficient equipment and cutting tool became our first selection. My company is acquiring razor of KLINGELNBERG-HOFLERP40 measuring instrument, SURSB18CNC is ground, KG251L hob is ground wait for equipment of a batch of high accuracy to taste precision in order to raise high yield while, to break the bottleneck that low, character does not stabilize gear hobbing efficiency. Mix in efficient gear-hobbing machine and M35 material, S390 respect of coating of hob of material of ASP2060 pulverous metallurgy, cutting tool is many also and devoted, received fall significantly this achievement. To make cutting tool, equipment, coating the function that wait is integrated the biggest turn play we did a large number of tests in the following respects: 1, cutting tool life decides really: Length of workpiece of one pitch cutting considers integratedly, undertake comparative for the cutting tool life of the gear of can different to treatment parameter; Must make clear: The cutting that can machine inside time of 1 pitch shift is alveolar length (M) , this also must wear away in cutting tool of course Vb ≤ 0.

The cutting length inside 2mm; Will bring about the great waste of cutting tool life otherwise. Tf= (B/cos β ) measure of work of cutting of N of number of tine of workpiece of Z of helix angle of β of ZN B facewidth 2.

The hob of TiAlN of union of S390 of hob of pulverous metallurgy material, ASP2060 and M35 combines the correct make choice of of TiN cutting parameter; Of course we know pulverous metallurgy and TiAlN can satisfy V to cut =130 ～ 180mm/min and bigger feed, but what use the gets a machine tool property of process lieutenant general actually is great restrict. At present rotate speed of homebred main shaft of gear-hobbing machine of four-axle numerical control has 50rpm of rotate speed of 600rpm, workbench only; And the workbench rotate speed of the main shaft rotate speed that although have 100-1500rpm,6 axes high speed rolls and 150rpm, but there is 1 only like boiling with four-axle however.

5 ～ 3.

The work clamping force of 5Mpa; Bring about cutting function to suffer badly be restricted. But because its are opposite low machine tool price, machine tool of this kind of norms is used to want to foster strengths and circumvent weaknesses adequately in civilian battalion enterprise, still can achieve inferior sheet cost. Cutting experiment one: M1.

28 ° of 5Z44a20 ° β are dextral material: 4Material of cutting tool of 0Cr hardness HRC14-18 65*120*32N3Z12: S390 coating: TiAlN cuts ≥ when V when 112m/min, can choose F ≤ only 1.

5mm/rev, otherwise value of β of FH α , FH, M will be changed and not stable; Cutting experiment 2: M1.

28 ° of 5Z44a20 ° β are dextral material: 4Material of 0CrHRC14-18 65*120*32N3Z12 cutting tool: S390 coating: TiAlN is become ≥ of 2mm/rev ≥ F 1.

When 5mm/rev, can choose V to cut ≤ only 112m/min, otherwise value of β of FH α , FH, M will be changed and not stable; 3.

My company is in except Y5120B this is planted outside function and its low slotting machine, its at boiling, insert a machine tool to all applied cutting tool builds the technology that coating of TiN, TiAlN makes after grinding every time, treatment of all gear hobbing realizes cutting, promote gear-hobbing machine the productivity of nearly one times thereby, and make cutting tool life lengthens 3 times above. But when 300rpm of ≤ of rotate speed of main shaft of one part machine tool, the efficiency of coating and wearability cannot fill minute of play, make workpiece makes cost instead on the high side. This kind of machine tool applies no matter why to plant the source that cutting tool will become product high cost, low Cpk to be worth. Those who become a company " small coalpit " , waste resource in great quantities. 4.

To improve gear hobbing quality (alveolar diameter jumps, accumulative total pitch) advocate sheet commonly outfit clip, but efficiency of wasteful when workpiece facewidth is less than 20mm treatment 100% , the 2 to 4 means holding clip when reason facewidth is less than 20mm are not not desirable. The quality that carries car semifinished product can control its Fp basic in DIN6-7 class. Besides afore-mentioned content, fluid of change knife quantity, cutting, go against / suitable rolling cut cuts the choice that wait to also have cannot oversight; Pass the cutting test of workpiece of much different material, hardness, parameter, choose best cutting parameter, the production of high quality, efficient, low cost can come true certainly. Undermentioned two cutting case reflected afore-mentioned cutting methods basically to offer reference only: Relevant parameter: Normal > produces several Normal >M1.

528 ° of β of ° of Zvalue="44" UnitName="a">44 A20 are dextral Normal > : 40Cr HRC14-18normal > : Value="10.

9" UnitName="mm">10.

9mmnormal MARGIN of parameter of Center" Align=center> cutting tool: Norms of 0cm 0cm 0pt"> : 65*120*32 N3 Z12normal > : S390normal > : TiAlN (Suzhou Baerchasi) Normal > produces business: Normal Align=center> repairs grind equipment Normal >KGvalue="251" UnitName="l">251L grinds Normal > cutting equipment: Normal MARGIN of gear-hobbing machine of Exactly">YS3112CNC high speed: 0cm 0cm 0pt; Mso-element: Frame; Mso-element-frame-hspace: 9.

0pt; Mso-element-wrap: Around; Mso-element-anchor-vertical: Paragraph; Mso-element-anchor-horizontal: Margin; Mso-element-top: 3.

35pt; Mso-height-rule: Exactly"> producing area: Normal > Nanjing factory Normal > main shaft: 650rpmnormal >V cuts Value="132.

6" UnitName="m">132.

6m/min Normal > feed: Value="1.

5" UnitName="mm">1.

5mm/revnormal > change knife measures Value="5.

12" UnitName="mm">5.

12mm/ second Normal > cutting measures: One knife cuts Normal > cutting time: 60 seconds Normal > outfit places a number: 4 (assemble and unassemble time 15 seconds) Normal > cutting fluid: Accept overcomes 2020normal > second long grind coating to process an amount: 5944 Normal > cutting workpiece is alveolar length: Value="169.

3" UnitName="m">169.

3mnormal > average sheet handling time: 20 seconds Normal >normal > cutting tool ≤ Value=" .

2" UnitName="mm">0.

20mmnormal > cutting tool sees a picture one: NOrmal Align=center> relevant parameter: Normal Align=center> product produces several Normal >M1.

528 ° of β of ° of Zvalue="44" UnitName="a">44 A20 are dextral Normal > : 40Cr HRC14-18normal > : Value="10.

9" UnitName="mm">10.

9mmnormal MARGIN of parameter of Center" Align=center> cutting tool: Norms of 0cm 0cm 0pt"> : 65*120*32 N3 Z12normal > : M35normal > : TiN (Suzhou Baerchasi) Normal > produces business: Normal Align=center> repairs grind equipment Normal >KGvalue="251" UnitName="l">251L grinds Normal > cutting equipment: Normal MARGIN of gear-hobbing machine of Exactly">Y3116CNC numerical control: 0cm 0cm 0pt; Mso-element: Frame; Mso-element-frame-hspace: 9.

0pt; Mso-element-wrap: Around; Mso-element-anchor-vertical: Paragraph; Mso-element-anchor-horizontal: Margin; Mso-element-top: 20.

8pt; Mso-height-rule: Exactly"> producing area: Normal > Nanjing factory Normal > main shaft: 500rpmnormal >V cuts Value="102.

05" UnitName="m">102.

05m/min Normal > feed: Value="2" UnitName="mm">2mm/revnormal > change knife measures Value="4.

71" UnitName="mm">4.

71mm/ second Normal > cutting measures: One knife cuts Normal > cutting time: 37 seconds Normal > outfit places a number: 1 (assemble and unassemble time 10 seconds) Normal > cutting fluid: Accept overcomes 2020normal > second long grind coating to process an amount: 3500 Normal > cutting workpiece is alveolar length: Value="99.

6" UnitName="m">99.

6mnormal > average sheet handling time: 47 seconds Normal >normal > cutting tool ≤ Value=" .

2" UnitName="mm">0.

20mmnormal > cutting tool sees a picture 2: NOrmal Align=center> CNC Milling CNC Machining