| 释义 |
hypoid, a. and n. Mech.|ˈhaɪpɔɪd|
[Said to be a contraction of hyperboloid or of hyperbolic paraboloid (in reference to the shape of the teeth on the wheel).]
A. adj.
a. Applied to a kind of gear similar to a spiral bevel gear but having the pinion offset from the centre-line of the wheel, so that it can be used to connect shafts whose axes do not intersect; it is commonly employed in motor vehicles to transmit the power from the propeller shaft to the axle.
1926Jrnl. Soc. Automotive Engin. June 575/1 Hypoid-gears are tapered gears having offset axes. 1935Times 2 Oct. 6/5 The rear axle is fully-floating, and final drive is by hypoid spiral bevel gears. 1937Jrnl. Applied Mech. IV. A-31 The behavior of lubricants in the region of boundary lubrication has become of added importance due to the recent adoption of hypoid gears in automobiles. 1941F. D. Jones Engin. Encycl. I. 676 The chief advantages of hypoid gears are noiseless operation, increased load-carrying capacity, the possibility of high reduction and low numbers of teeth, long life, and high efficiency. 1969K. Ball Rover 2000 1963–1969 Autobook vii. 64/1 The unit contains a hypoid crownwheel and pinion for the final drive from the power input shaft to the half shafts.
b. Suitable for or employing a hypoid gear.
1937S.A.E. Jrnl. (Transactions) XLI. 557/2 Six or seven months ago the lubrication of hypoid axles in the field was a much more serious problem than it is today. Ibid. 563/1 One lubricant submitted by a manufacturer as an extreme-pressure hypoid lubricant was found to be a ‘straight’ mineral oil when analyzed. 1963Times 3 May 10/6 A four-speed, all synchromesh gearbox..incorporates the hypoid final drive. 1969G. M. Mitchell Jowett Javelin, Jupiter 1947–1953 Autobook vi. 65/1 For lubrication of this axle, hypoid lubricant only should be used.
B. n. A hypoid gear.
1935R. Trautschold Stand. Gear Bk. ix. 144 Hypoids are machined in practically the same manner as spiral gears. 1962D. W. Dudley Gear Handbk. ii. 12 Sufficient offset of the hypoid permits straddle mounting of the pinion and the gear. |