摘要:
In a method for producing a cavity (14) in a stator of an eccentric screw pump, material is removed in the interior of a stator blank (10) by means of a tool (11). In order that very long stators can be produced in one production operation, the tool (11) performs a rotational motion through a first shaft (12) and an eccentric motion around a second shaft (13), during which the stator blank (10) and the tool (11) are moved toward each other. A device for performing the method comprises (a) a bearing shaft (3) that can be coupled with its drive end to a first drive and that is rotatable around its longitudinal axis by means of the first drive; (b) a drive shaft (4) that can be coupled with its drive end to a second drive and is arranged in a borehole of the bearing shaft (3) and is rotatable around its longitudinal axis by means of the second drive form-fitting and relative to the bearing shaft (3), and (c) a machining tool (5), which is rotationally fixed connected to the machining end of the drive shaft (4) that can be inserted into the cavity and can be driven rotatably via the drive shaft (4) around the longitudinal axis of the drive shaft (4). The longitudinal axis of the drive shaft (4) intersects the longitudinal axis of the bearing shaft (3) at a point or is arranged askew to the longitudinal axis of the bearing shaft (3).
摘要:
Disclosed is a method of working a semi-finished scroll member for a scroll compressor which has a circular end plate having a first end face and a second end face with a spiral wrap extending therefrom. Before the second end face and the wrap are machined, the outer peripheral surface of the end plate is formed therein with a circumferencial groove to provide jaw finger engaging surfaces spaced from the first and second end faces of the end plate. Then, radial grooves are formed in the outer periphery of the end plate such that each groove extends between and is open in one of the jaw finger engaging surfaces and in the first end face of the end plate. Thereafter, the semi-finished scroll member is positioned relative to a machine tool such that the first axial end face of the end plate is placed adjacent a back-up member of the machine tool. Then, jaw fingers of the machine tool are moved into engagement with the jaw finger engaging surfaces of the semi-finished scroll member, respectively, and are further moved axially of the machine tool toward the back-up member until the first axial end face of the end plate is urged against the back-up plate, whereby the semi-finished scroll member is firmly fixed to the machine tool and ready for machining of the second axial end face of the end plate and of the spiral wrap thereon.
摘要:
Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.
摘要:
Methods and devices for milling a channel-shaped cavity by a five-axis computer numerical control (CNC) machine by selecting a workpiece to be machined, determining cutting tool flow along the channel-shaped cavity, determining cutting tool in-depth penetration, determining a trochoid path, and determining auxiliary movements.
摘要:
In a method for producing a cavity (14) in a stator of an eccentric screw pump, material is removed in the interior of a stator blank (10) by means of a tool (11). In order that very long stators can be produced in one production operation, the tool (11) performs a rotational motion through a first shaft (12) and an eccentric motion around a second shaft (13), during which the stator blank (10) and the tool (11) are moved toward each other. A device for performing the method comprises (a) a bearing shaft (3) that can be coupled with its drive end to a first drive and that is rotatable around its longitudinal axis by means of the first drive; (b) a drive shaft (4) that can be coupled with its drive end to a second drive and is arranged in a borehole of the bearing shaft (3) and is rotatable around its longitudinal axis by means of the second drive form-fitting and relative to the bearing shaft (3), and (c) a machining tool (5), which is rotationally fixed connected to the machining end of the drive shaft (4) that can be inserted into the cavity and can be driven rotatably via the drive shaft (4) around the longitudinal axis of the drive shaft (4). The longitudinal axis of the drive shaft (4) intersects the longitudinal axis of the bearing shaft (3) at a point or is arranged askew to the longitudinal axis of the bearing shaft (3).
摘要:
A method and apparatus for machining a matched set of fixed and orbiting scroll members for use in a scroll compressor. The respective wrap surfaces of the scroll members are simultaneously machined by respective rotating cutting tools. Specifically, rotational and linear movement of the fixed and orbiting scroll members together, synchronized with linear movement of the cutting tools, causes the simultaneous machining of the scroll members along respective wrap surfaces that form a radially inwardly moving sealing line of contact therebetween during compressor operation. Accordingly, any systemic or random deviation from a true involute form during machining of the matching of the matched scroll member set results in complementary deviations in the respective wrap surfaces, whereby a sealed relationship between the wrap surfaces is maintained at such point of deviation during compressor operation.
摘要:
A scroll machining method for forming a wall part (21) configured in a scroll shape on a surface of a workpiece (W), which includes a first scroll machining step of machining one of the wall surfaces (22, 23), in which a tool (14) is moved relative to the workpiece from an outside of the workpiece (W) toward a center part (25) along a predetermined path (L1) while turning the rotary table (17) in a first direction (R1); and a second scroll machining step of machining the other of the wall surfaces (22, 23), in which the tool (14) is moved relative to the workpiece from the center part (25) of the workpiece (W) toward the outside by returning along the predetermined path (L1) while turning the rotary table (17) in a second direction (R2) opposite to the first direction (R1).
摘要:
A scroll machining method for forming a wall part (21) configured in a scroll shape on a surface of a workpiece (W), in which a tool (14) attached to a spindle is moved relative to the workpiece (W) attached to a rotary table (17), including: a first scroll machining step of machining one of an outside wall surface (23) and an inside wall surface (22) of the wall part (21), in which the tool (14) is moved relative to the workpiece from an outside of the workpiece (W) toward a center part (25) along a predetermined path (L1) while turning the rotary table (17) in a first direction (R1); and a second scroll machining step of machining the other of the outside wall surface (23) and the inside wall surface (22) of the wall part (21), in which the tool (14) is moved relative to the workpiece from the center part (25) of the workpiece (W) toward the outside by returning along the predetermined path (L1) while turning the rotary table (17) in a second direction (R2) opposite to the first direction (R1).