4 results about "Epicycloid" patented technology

This invention provides a two-stage reducer based on cycloidal and epicycloidal transmissions, belonging to the field of reducer technology. The two-stage reducer includes a housing, a primary input mechanism, a primary reduction mechanism, a primary output / secondary input mechanism, a secondary reduction mechanism, and a secondary output mechanism. The primary and secondary reduction mechanisms employ either epicycloidal pinwheel transmission or cycloidal pinwheel transmission, and the transmission types are different. Both the primary and secondary reduction mechanisms include at least one cycloidal wheel, at least three eccentric crankshafts with pins evenly distributed along the circumference, and an intermediate fixing plate for fixing the eccentric crankshafts. Both the primary output / secondary input mechanism and the secondary output mechanism include pinwheels. Under the same reduction ratio, this invention exhibits good dynamic characteristics, a compact and simple structure, and the pinwheels can be designed with a sufficiently large diameter, thus improving load-bearing capacity. Furthermore, the pinwheels are fixed at both ends by bearings and can roll, reducing wear between components.

This invention provides a machining method for obtaining uniform surface machining accuracy of a variable pitch screw rotor, comprising the following steps: 1) Dividing the end face profile of the rotor into an involute, addendum circle, epicycloid, and dedendum circle; 2) Dividing one of the involute, addendum circle, epicycloid, and dedendum circle into N equal segments, with the connection point between each segment being the tool point; the line connecting the tool point and the origin is the extreme diameter L, and the angle between the extreme diameter L and the coordinate axis is θ; 3) For each toolpath, the tool point is used as the entry point, and the workpiece is rotated by an angle θ so that the extreme diameter is parallel to the coordinate axis; 4) The tool rotates along a direction parallel to the coordinate axis from one end of the workpiece to the other end; 5) After the tool is lifted to the outside of the workpiece, it moves to the cutting start end, and steps 1-4 are repeated until one of the involute, addendum circle, epicycloid, and dedendum circle is machined; 6) Steps 1-5 are repeated until all the involute, addendum circle, epicycloid, and dedendum circle are machined.

The present invention relates to a tool holder adapter (10; 110) for attaching a tool (80; 180; 280) to a machine tool by means of a pin (50; 150; 250; 350). The tool holder adapter (10; 110) has a neck structure (20) for inserting the pin (50; 150; 250; 350), in which an inner recess (30) extends from a tool side (WS10) along a longitudinal axis (LA30). For a robust and reliable fastening of a tool (80; 180; 280) and to facilitate high manufacturing precision, the inner recess (30) has a receiving cross-section perpendicular to the longitudinal axis (LA30), the basic shape of which corresponds to a polygon with at least five points (32), a hypocycloid with at least five points (32), a pericycloid or an epicycloid.The invention further relates to a suitable pin (50; 150; 250: 350) for attaching a tool (80; 180: 280) to a tool holder adapter (10; 110), a suitable tool (80; 180; 280) and a tool fastening system comprising the tool holder adapter (10; 110) and the pin (50; 150; 250: 350).

The present invention relates to a tool holder adapter (10; 110) for fastening a tool (80; 180; 280) to a machine tool by means of a pin (50; 150; 250; 350; 450). The tool holder adapter (10; 110) has a neck structure (20) for inserting the pin (50; 150; 250; 350; 450), in which neck structure an inner recess (30) extends from a tool side (WS10) along a longitudinal axis (LA30). For robust and reliable fastening of a tool (80; 180; 280) and to facilitate high manufacturing precision, the inner recess (30) has, perpendicular to the longitudinal axis (LA30), a receiving cross-section whose basic shape corresponds to a polygon having at least five vertices (32), a hypocycloid having at least five vertices (32), a pericycloid or an epicycloid. The invention further relates to a matching pin (50; 150; 250; 350; 450) for fastening a tool (80; 180: 280) to a tool holder adapter (10; 110), a matching tool (80; 180; 280) and a tool fastening system having the tool holder adapter (10; 110) and the pin (50; 150; 250; 350; 450).