摘要:
The invention relates to a variable-force discharge mechanism for materials loaded on a reel. Some material is drawn with an external device (1) from a reel (2) around a reversing wheel (6), said reel being driven or decelerated with a discharge motor (3). In order to reduce the tensile stress fluctuations of a material (5), the reversing wheel (6) is afforded a certain displacement (A), within which a resilient assembly (7-9) produces a counter-force for a traction force (F). The counter-force produced by the resilient assembly is created by a piston-cylinder unit (7), having its gas pressure adjustable by a regulating valve (9) which sustains an adjustable, constant counter-force.
摘要:
An apparatus and method for making an elongated hole in a pipe which includes drilling a rotating conical tool through the pipe wall by pushing the conical tool in the direction of its rotating axis to a desired depth, then simultaneously lifting and tilting the conical bit so as to mill one end of an elongated hole. The rotatable conical tool may be lifted and tilted in the opposite direction to further mill the pipe and elongate the hole. Tilting is effected relative to a pivot point located above the top pipe surface and in a plane extending through a center axis of the pipe, and the angle of inclination can be adjusted for determining the length of the finished hole.
摘要:
The invention relates to a pipe cutting apparatus, comprising a body, a cutter head (1) bearing-mounted rotatably on the body, having a centre rotation axis (C) and having a cutting gap (2) which opens radially sideways for receiving a pipe to be cut, pipe securing elements (8) for fixing the pipe on said centre rotation axis (C) immovably relative to the body, the cutter head (1) being provided with support rolls (21) for supporting the pipe during a cutting process. The cutter head (1) includes a cutting blade (22) in the shape of a sharp-edged disk, which, during rotation of the cutter head (1), is adapted to be advanced towards the centre rotation axis (C) for cutting the pipe by chipless cutting. The cutter head (1) is further provided with a shifting and locking mechanism (12-20, 28-40) for the support rolls (21), which, regardless of the diameter of a pipe to be cut, shifts and locks the support rolls (21) with a single drive and/or control against the surface of a pipe for said cutting support.
摘要:
The invention relates to an apparatus for cutting an oval hole in the wall of a pipe. The pipe secured to a baseplate (1) of the apparatus is cut for an oval hole by means of a tool (20) having its cutter head (24) rotated about its axis while it is driven along a circular path in relation to a carriage (2) of the apparatus. The carriage (2) is mounted on the baseplate (1) by way of linear runners (3). Adapted for rotation along with a drive pulley (4) of the tool (20) is a cogged wheel (10), which through the transmission of a cam lever (11) is adapted to drive a shaft (12) having its rotational motion transmitted on the one hand to drive a gear (22) and on the other hand to work the carriage (2) back and forth in relation to the baseplate (1), a round-trip displacement (2xa) being equal to a difference between the major axis and the minor axis of a desired ellipse.
摘要:
The invention relates to an apparatus for cutting an oval hole in the wall of a pipe. The pipe secured to a baseplate (1) of the apparatus is cut for an oval hole by means of a tool (20) having its cutter head (24) rotated about its axis while it is driven along a circular path in relation to a carriage (2) of the apparatus. The carriage (2) is mounted on the baseplate (1) by way of linear runners (3). Adapted for rotation along with a drive pulley (4) of the tool (20) is a cogged wheel (10), which through the transmission of a cam lever (11) is adapted to drive a shaft (12) having its rotational motion transmitted on the one hand to drive a gear (22) and on the other hand to work the carriage (2) back and forth in relation to the baseplate (1), a round-trip displacement (2xa) being equal to a difference between the major axis and the minor axis of a desired ellipse.
摘要:
The invention relates to a mounting and dismounting mechanism for a straightening or calibrating roller (2) rotatable about a spindle (1) and provided with a circular groove (13). The spindle (1) has its cavity (4) fitted with a pusher (9), having a tapered thrust face (9a, 9b) which shifts, as a result of the force of a spring (10), a holder element (8) from its release position to its clamping position. The holder element (8) is located in an opening present in a wall (3) of the cylinder (4). A plunger (11), associated with the pusher (9), can be used for moving the pusher against the force of the spring (10) to a position in which the holder element (8) is capable of shifting from its clamping position to its release position in which the roller is removable from the spindle (1) or mountable onto the spindle.