摘要:
A multiple spindle drilling apparatus (10) having an eccentric drive link (11), and a primary drive mechanism (12) coupled to the drive link (11) in an eccentric off-set manner. This eccentric off-set causes eccentric circular motion of the drive link (11) about a predetermined radius (R). A frame member (15) is included, as well as a plurality of in-line spindle units (16) rotatably mounted to the frame member (15) for rotation about corresponding spindle axis (17) thereof. An off-set coupling (21) is rotatably mounted between the drive link (11) and respective crank members (20) mounted to corresponding spindle drive shafts (22) to drive the spindle about the spindle axis (17). The coupling (21) is eccentrically off-set from the spindle axis by a radial distance substantially equivalent to the predetermined radius, and further in-phase with the eccentric off-set of the drive link (11).
摘要:
A cutting metal-working machine for processing hooke's joints, including a machine base, a control panel for controlling the operation of the machine, a left tool carrier and a right tool carrier mounted on the machine base at two opposite locations and having a respective cutting tool controlled to synchronously cut two opposite ends of the workpiece, a first tailstock and a second tailstock respectively mounted on the machine base at two opposite ends and having a respective center pin moved by a hydraulic cylinder to hold the workpiece in place, and a workpiece rotating mechanism mounted between the tool carriers and the center pins of the tailstocks, and controlled to turn the workpiece relative to the cutting tools of the tool carriers.
摘要:
A rock-cutting tool includes a sleeve equipped with cutting elements and supported on a shaft, the sleeve being separately rotatable and eccentrically arranged in relation to the shaft whereby, in use, rotation of the shaft imparts a radially oscillating motion on the sleeve. At least one adjustable counterweight is connected to the shaft and located within the sleeve.
摘要:
A disk chipper for the production of wood chips, consisting of a rotatable chipping disk supported on an axle driven by at least one drive machine. The disk chipper of the invention is so implemented that at least three motors are drivably coupled to the axle of the chipping disk by means of a gear assembly, preferably a spur gear assembly.
摘要:
A tapping attachment for threading a relatively large number of holes through a sheet metal part at a relatively low cost per hole. The tapping attachment includes a thrust bearing assembly which is aligned with a turret-type punch press or the like and movable in response to an axially directed force generated by the punch press. The axially directed force applied from the press to the thrust bearing assembly is transferred to a spline shaft. The spline shaft is rotated wihin and moved linearly relative to a screw threaded roller nut, whereby the axially directed force is converted into a rotating force for advancing and turning a tap at high speeds of rotation. A nitrogen reservoir is provided so that a supply of gas is available for returning the thrust bearing assembly and the spline shaft to their initial positions in order that a new hole can be tapped in response to another axially directed force. Also provided is an oil reservoir so that a supply of oil is available for lubricating and cooling the tap via an oil spout.
摘要:
A rigid arm supports the outboard end of a shaft of a power driven apparatus to minimize transverse deflection of the shaft under load. The arm extends through a loop formed by a flexible drive member and permits replacement of the drive member without removal of the arm. In a preferred embodiment, the arm is a cantilevered arm of substantially rectangular cross section which is bolted or otherwise secured to the apparatus and has a bearing at its outer end which engages the output shaft.
摘要:
In a multipurpose machining unit with pneumatic spindle feed, driving is performed, starting from a motor unit (12), directly or via a flexible shaft (9). An interchangeable gear set (4) makes it possible to select the number of revolutions of the tool in accordance with its purpose. In this connection, for simultaneous use, an arbitrary number of gears (5, 6) is provided. The gears (5, 6) of the gear set (4) can be plugged together in coaxial series. The driven side of the motor unit (11) can be plugged together with the machining unit directly or by way of at least one gear (5, 6) or by way of a connecting coupling (8) for a flexible shaft (9) into a rotational connection. With the use of such a machining unit, individual spindles can likewise be operated economically.
摘要:
A milling machine head assembly has a milling machine head mounted on a movable carriage, for movement with the carriage and for angular movement relative to the carriage about a predetermined axis. A motor is mounted on the carriage for movement with the carriage but is maintained stationary during angular movement of the machine head. Drive power is transmitted from the motor to the machine head in any angular position of the machine head within said angular movement. For this purpose, a power transmission is twistable relative to said predetermined axis and extends along said predetermined axis through the carriage from the motor to the machine head in the form of a twistable endless belt. The power transmission may include two parallel shafts comprising a spindle shaft for operating a tool bit, and an auxiliary shaft adapted to be driven off the motor by a first belt via one end of the auxiliary shaft. A belt and pulley transmission interconnects another end of the auxiliary shaft with the spindle shaft. The auxiliary shaft is mounted for pivotal movement between the ends thereof about a pivot axis located between the first belt and the belt and pulley transmission and extending at right angles to the auxiliary shaft to permit selective slackening and tightening of the belt and pulley transmission.
摘要:
A device for rotating spindles in a wood working router includes a turret head rotatably mounted on a column extending from a machine face having radially orientated spindle heads and rotatable spindles, cutting tools respectively mounted on the working end of each of the spindles, a turret head positioning device for moving a selected one of the cutting tools to a processing position, an electric motor mounted within the column and having a drive pulley to rotate the spindles and a transmission having a drive belt driven by the motor engageable and disengageable with the spindle in the processing position to rotate the spindle and thereby the cutting tool to perform a cutting operation on a workpiece.
摘要:
The invention concerns a drill head for the attachment of bone drills or bone milling cutters, as well as the bone drills or milling cutters themselves, especially for preparing bone cavities into which enossal prosthetic elements can be inserted. The designation "bone drill" or "bone milling cutter" is meant to include all drills or cutters with which, in the field of human or veterinary medicine, including the dental field, material can be removed from teeth, bones and bone-like tissue, as well as from corresponding substitute materials. Finally the invention concerns also dental and half-implants, being particularly simply inserted with these instruments.