Drill with a hammer mechanism
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 2000
Grant Date -
N/A
app pub date -
May 14, 1999
filing date -
May 14, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drill including a hammer mechanism (7) for generating axial blows to be imparted to a tool (6) receivable in a drill spindle, with the hammer mechanism (7) including a first cam disc (11) connected with the spindle (5) for joint rotation therewith, a second cam disc (12) supported in a drill housing (1) without a possibility of rotation relative thereto but with a possibility of axial displacement therein and having a projection (22) extending through the first cam disc (11) and into the spindle (5) for imparting the axial blows to the tool (6) which is received in the working spindle (5) with a possibility of a limited axial displacement relative thereto, a first spring (14) located between a surface (13) of the second cam disc (12) facing in the direction opposite to the drilling direction and a surface in the housing (1) facing in the drilling direction for biasing the second cam disc (12) into the drilling direction, a second spring (23) located between the surface (13) of the second cam disc (12) and a working surface (18) of the adjusting element (19) for further biasing the second cam disc (12) into the drilling direction and an operational point of which is displaced into an operating region of the first spring (14) by adjusting element (19) displaceable parallel to the drilling direction.
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