Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-01-24
1976-03-02
DiPalma, Victor A.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29 33R, 29 33K, 29200R, 29208R, 29208C, B23P 1904
Patent
active
039408396
ABSTRACT:
An assembly machine having a high accuracy positive positioning mechanism, which engages the assembly table when the indexing system is in a dwell portion of the cycle, not moving the assembly table. A positioning pin, which is mechanically connected to operate in synchronism with the indexer for the assembly table, positively engages and positions, if necessary, the assembly table. The positive positioning mechanism engages the assembly table between indexing steps. An overload clutch is provided between the indexer and the assembly table, to relieve mechanical overloads which may occur and to prevent damage to the assembly machine. The positive positioning mechanism is not driven by the indexer output thus it is unaffected by wear or defects in the indexer, the indexer drive, or the overload clutch mechanism. The dial positioning system utilizes the slack or backlash which is inherent in gears and thus permits moving the assembly table slightly, to a highly accurate position, during the portion of the machine cycle when the indexer is not moving the table. The positive positioning dial locating system utilizes a cam which operates and reciprocates a mechanical linkage to position a locator in time with the indexing unit. The reciprocating locator shaft is down and out of engagement with the assembly table during indexing and up and in engagement with the table during the dwell portion of the machine cycle. The locator shaft moves up due to the action of a spring actuated cam displaced lever and moves positively down due to the action of the cam. Thus the locator shaft is raised due to force applied through the spring and lowered due to the positive force applied by the cam. This arrangement assures positive disengagement of the locator pin, which is disposed at the end of the locator shaft, from the locator bushing which is connected to the assembly table. In the event that the assembly table is out of position the spring action will prevent damage to the locating system components. The locator bushing and the locator pin position the assembly table independent of wear in the indexer or overload mechanism thus overcoming a common problem in assembly machines.
REFERENCES:
patent: 2962846 (1960-12-01), Marindin
patent: 2997781 (1961-08-01), Dixon
patent: 3065530 (1962-11-01), Merchant et al.
patent: 3143792 (1964-08-01), Swanson et al.
patent: 3591913 (1971-07-01), Lewis
patent: 3675301 (1972-07-01), McQuary
patent: 3735470 (1973-05-01), Elmer
Assembly Machines, Inc.
DiPalma Victor A.
Massung Howard G.
Yeager Robert D.
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