Abstain cold staff guage

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Rolled steel produces make friends workshop to be given priority to with scale material in, and it is double size scale more. Stop in production machine undertake scale is adjusted frequent, make an appointment with 2 ～ 3 times. Be on duty the heat that high speed should wait for to rotate first when personnel adjusts scale curiums machine curium piece stop roll, measure with tape measure next curium piece to scale machine the distance of two scale fender, at the same time in order to of position of fender of scale of ceaseless fine tuning satisfies dimension to ask, need to be measured several times, public errand of dimension of specified cut lengths is 0 ～ 10mm, heat up scale dimension public errand namely. Every time scale needs 20min about, take up already manufacturing time, affect artificially again measure precision, phenomenon of out of tolerance of constant occurrence dimension. Via studying a decision, abstain cold staff guage and scale machine form a complete set to use, in order to eliminates hot scale flaw. 1. Choose length 5540mm16# channel, after two end secure two pedestal respectively with M16 bolt, pedestal and bearing solder (attached drawing) . Solder the rear sight finger on two scale fender, can follow scale fender to move on guide screw, in order to indicate scale. 2. Adjust a distance of two scale fender to make an appointment with 3m, it is on rear sight board the accurate seat that has sought two index, with two graduation mark with plumbic very corresponding stroke; With normal production methods, the position that presses two finger cuts an one long respectively two hot steel, an actual length is measured to be 4364mm and 7336mm respectively after waiting for normal temperature to cool. This dimension is the value of rear sight scale that fender finger indicates namely. Next rear sight board gets off undertake scale is machined. Difference of length of normal temperature of two sample rolled steel is 2972mm of 7336 one 4364 ＝ , graduation mark of two finger directive is apart from actually for 3008.

5mm, so the actual distance of millimeter of rear sight unit is 3008.

5/2972=1.

01228mm, rear sight unit centimeter actual distance is 10.

1228mm, the actual distance of rice of rear sight unit is 1012.

28mm, bilge by what go up to give rolled steel shrink coefficient is 1.

01228. The M in containing figure of rear sight scale is staff size, mm is GB dimension. Determine a 4M and position of 8M graduation mark with above 4364mm graduation mark and 7336mm graduation mark first. Measure actual distance to be 364mm × from 4364mm line towards the left 1.

01228 (bilge shrink coefficient) =368.

46mm. Reach 4M graduation mark, same method decides graduation mark of 5M, 6M, 7M, 8M right. Through measuring computation, the scale on rear sight is for the actual distance of 1M 1012.

88mm, go up in rear sight accordingly scale of ordinal section line out, the smallest scale is centimeter; After with handsaw treatment is finished, graduation mark installs two pedestal former position. Fender finger indicates the real measure after scale is the refrigeration that heat up steel, the user needs public errand of rolled steel length to be 0 ～ 60mm commonly, so rear sight precision can satisfy use requirement completely. When use technical division gives tapping material length to allow the intermediate value of tolerancepublic errand only, namely cold scale dimension, do not need to undertake changing computation, avoided to change caused accident. For example dimension of user requirement length is 6000 ～ 6060mm, dynamoelectric when adjusting scale fender to move, 6030mm of point out mistakes so that they can be corrected of observation fender finger can, make fixed position of scale fender axial has production next. 3. Use abstain rear sight (cold feet) 3 years since, the effect is very good, do not need to stop machine measure can implement precise scale, and never out of tolerance. Technical division needs to undertake cold hot scale changes computation no longer, reduced scale to adjust workload. Year achieve beneficial result 610 thousand yuan. CNC Milling CNC Machining