acme thread वाक्य
उदाहरण वाक्य
मोबाइल
- Gauges also exist for the Acme thread form.
- Acme threads have a 29?thread angle, which is easier to machine than square threads.
- Long-length Acme threads are used for controlled movements on machine tools, testing machines, jacks, aircraft flaps, and conveyors.
- The "'trapezoidal metric thread form "'is similar to the Acme thread form, except the thread angle is 30?
- Acme threads have a very high static load capacity, while ball screws have an extremely low load capacity and can be nearly free-floating.
- Compared to square threads, disadvantages of the Acme thread form are lower efficiency due to higher friction and some radial load on the nut ( angular offset from square ).
- Although metric screw threads are generally more prevalent worldwide than imperial threads, the Acme thread is very common worldwide, and may be more widely used than the trapezoidal metric thread.
- It may be that the tooling for Acme threads has been so dominant ( compared to trapezoidal metric ) that customers tend to want Acme threads for power screws regardless of metric standards used elsewhere in the product.
- It may be that the tooling for Acme threads has been so dominant ( compared to trapezoidal metric ) that customers tend to want Acme threads for power screws regardless of metric standards used elsewhere in the product.
- The net effect is that the minimum thread heights are greater than basic for the internal and external GP and for the external centralizing, and the maximum height is shorter than basic for the internal centralizing Acme threads.
- The Acme thread form has a 29?thread angle with a thread height half of the pitch; the apex ( or " crest " ) and valley ( or " root " ) are flat.
- The line of General Purpose ( GP ) Acme threads ( ASME / ANSI B1.5-1988 ) are not designed to sustain external radial loads and both the nut and bolt are, ideally, independently supported, the nut by a linear guide and the screw by shaft bearings.
- This adds the requirement that the sum of the allowances and tolerances on the pitch diameters ( PD ); the drawback is that, for a given amount of end play ( axial clearance, due solely to PD deviations ), closer tolerances and cleaner work environment are necessitated in the application of a centralizing Acme thread.
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