Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1981-05-26
1984-04-17
Purser, Ernest R.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
744248R, 74841, F16H 108
Patent
active
044427255
ABSTRACT:
The present invention mainly relates to a shock absorbing apparatus for travelling a table or tool rest in machine tools such as a grinding machine, a lathe, a milling machine, a planer, and a drilling machine, wherein staged notch section is formed at both a feed nut travelling in engagement with a feed screw shaft of a table or a tool rest and an engaging bracket placed below said table or said tool rest or a bushing member fixed together with said engaging bracket a sliding collar having a notched section in order to engage with said corresponding notch section is located between said feed nut and said engaging bracket or said bushing member, one end of said sliding collar is formed as to be projected from the outer extreme end of the same side of said feed nut in order to make it possible that a spring receiver is mounted, thereby causing a hollow section to be formed between said sliding collar itself and the extreme end of said feed nut at the same side, and the other end of said sliding collar is so formed that said other end may be located inwardly of the outer extreme end of said engaging bracket or said bushing member at the same side, another spring receiver is mounted at the outer end section of said engaging bracket or said bushing member at the same side, thereby causing a hollow section to be formed at the same side of said sliding collar, both hollow sections are provided with an elastic member (e.g. a spring) with being sprung or widened, thereby causing shock produced by unusual collision to be effectively absorbed.
REFERENCES:
patent: 2368408 (1945-01-01), Brooking
patent: 2679168 (1954-05-01), Rokos
patent: 3733940 (1973-05-01), Harman et al.
Drucker William A.
Purser Ernest R.
Shigiya Machinery Works, Ltd.
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