摘要:
The invention is based on a powered hand-tool (10), in particular a hammer drill, having a shaft (12) and a stroke drive bearing (14) which is intended to translate a rotational movement into a stroke movement and is mounted in at least one bearing (16) on the shaft (12). The invention proposes embodying the at least one bearing as a slide bearing (16) which is integrated in the stroke drive bearing (14).
摘要:
A vibration dosimeter (13) for measuring the vibration load of individuals that are subject to mechanical vibrations due to the operation of a tool (2) comprises a measuring device (13) for determining the operating state, an operating time determination device (15) for determining the effective operating time of the tool, an arithmetic device (18) for calculating the actual cumulative load value, an evaluation device (9) for comparing the actual cumulative load value with defined threshold values, a display (10) and/or switch-off device (14) for displaying the actual status and/or switching off the tool when the threshold value is exceeded, and a memory device (11) for storing and reading out earlier load values.
摘要:
The invention relates to a tool holding fixture, particularly for a hammer drill or chisel hammer, comprising a holding body (14) provided with: an insertion opening (16) for holding a tool shank (12); a locking element (22) for axially locking the tool shank (12) inside the insertion opening (16), whereby the locking element (22) can move between a locking position and an unlocking position, and; an arresting pin (36), which is mounted inside the locking element (22) while being able to be radially displaced between an arresting position and a release position. Said arresting pin axially arrests the locking element (22) in the arresting position thereof and axially releases it in the release position thereof.
摘要:
The invention relates to a device for sealing a space (10) which contains a lubricant (12) and which is located on a structural part (14) that is driven in such a way that it rotates; in relation to a second space (16), especially on a pin of a manually operated machine tool, with at least one seal (20) which slides on a contact surface (18). According to the invention, at least one stationary structural part (28) is situated in the space (10) that is filled with lubricant (20), in front of the contact surface (18). Said stationary structural part encloses the structural part that is driven to rotate in at least one area of its periphery and at least substantially prevents swirls in the lubricant (20) in the area of the contact surface (18).
摘要:
The invention relates to a method for producing a honed segment bore (5-8) in work pieces (1-4), which each have a segment bore (5-8). The work pieces (1-4) are arranged relative to each other such that the segment bores (5-8) of the work pieces (1-4) are aligned to a common longitudinal axis (9) and a closed circle (12) is formed in a projection along the common longitudinal axis (9). The segment bores (5-8) of the work pieces (1-4) arranged relative to each other are then honed together. An elaborate grinding process can thus be replaced by a honing process, in which a plurality of work pieces (1-4) can be processed simultaneously, thus reducing the cycle time.
摘要:
The invention is based on a hammer drill and/or chisel hammer, having a percussion mechanism unit (12), a percussion mechanism housing (16) and at least one damping unit (18). The invention proposes that the damping unit (18) is arranged on the percussion mechanism housing (16) along a main direction of extent (20, 22) of the percussion mechanism unit (12).
摘要:
The invention relates to a machine tool comprising an electric motor (2) which serves to drive a tool and which has an adjustable, electric brush arrangement (3), and comprising a mode selector switch (6) having various switch positions. Provision is made for an adjusting device (8) to displace the brush arrangement (3) as a function of the switch position of the mode selector switch (6). Furthermore, the invention relates to a corresponding method.
摘要:
The invention concerns a circlip for shafts or bores, which can be axially snapped on in a circular groove (32). Said circlip (10) is provided with a centring ring (17) which, when the circlip (10) is fitted in the circular groove (32) extends, at some distance radially from an annular loop (11) of the circlip (10) substantially concentric relative to said circular groove (32).