Scroll machining machine and method for machining scroll-shaped workpieces

Abstract

To double a production quantity of scroll-like workpiece while keeping accuracy.SOLUTION: A scroll processing device measures an error of eddy flow thickness of first workpiece WA1 and second workpiece WA2, adjusts the temperature of a temperature controller 41 and adjusts a distance between an S1 axis and an S2 axis so as to absorb the error of the eddy flow, synchronizes an X-axis motor 3c, a Y-axis motor 6c and a C1-axis motor 9c and subjects the first workpiece WB1 to scroll processing, and subjects the second workpiece WB2 to scroll processing so as to become the same as the first workpiece 30 while synchronizing a C2-axis motor 9d with the X-axis motor 3c, the Y-axis motor 6c and the C1-axis motor 9c according to their motions.SELECTED DRAWING: Figure 1A

Description

Technical Field

[0005] ,

[0001] The present invention relates to a scroll processing machine and a method for processing a scroll-shaped workpiece.

Background Art

[0002] Conventionally, for example, as in Patent Document 1, there is provided a processing table configured to be able to simultaneously arrange the material of the first scroll and the material of the second scroll and to be able to process the material of the first scroll and the material of the second scroll, and there is known a machine tool for simultaneously processing a plurality of workpieces provided with the processing table.

[0003] Further, as in Patent Document 2, there is provided a turning device for turning and moving a plurality of worktable devices that detachably support a plurality of scroll-shaped workpieces having a spiral wrap standing upright on a table, a plurality of tool posts having a tool spindle for rotatably supporting a machining tool, and a main body bed on which the turning device and the plurality of tool posts are mounted. There is known a scroll-shaped processing device.

[0004] Furthermore, as in Patent Document 3, a turning scroll member processing device for processing a turning scroll portion of a turning scroll member by a machining tool based on scroll shape data preset by an arithmetic control device before processing, a fixed scroll member processing device for processing a fixed scroll portion of a fixed scroll member by a machining tool based on scroll shape data preset by an arithmetic control device before processing, scroll shape data measuring means for measuring the actual scroll shape data of the scroll portion processed by the one scroll member processing device, and shape data arithmetic correction means for arithmetically correcting the scroll shape data of the other scroll member processing device based on the measured shape data of the one scroll portion from the scroll shape data measuring means. There is known a scroll shape processing device constituted by the above.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Patent No. 4352649 [Patent Document 2] Patent No. 3833386 [Patent Document 3] Patent No. 3035364 [Overview of the project] [Problems that the invention aims to solve]

[0006] The machine tool described in Patent Document 1 processes one workpiece at a time, resulting in a production rate of only 15 to 60 units per hour, which presents problems in terms of mass production. Furthermore, because it requires high-precision production equipment, it uses expensive, specialized machines, leading to high production costs per unit.

[0007] Furthermore, the processing apparatuses described in Patent Documents 2 and 3 do not disclose or suggest any methods for resolving errors in the tool diameter.

[0008] This invention has been made in view of the above, and its purpose is to double the production volume of scroll-shaped workpieces while maintaining accuracy. [Means for solving the problem]

[0009] To achieve the aforementioned objective, this invention allows the distance between a pair of tools to be adjusted by heating or cooling the Y-axis table on which the tool axis is located.

[0010] Specifically, in the first invention, A bed and On the bed, an X-axis table that can move along the X-axis by an X-axis actuator, On the aforementioned X-axis table, a Z1-axis table is provided that can be moved along the Z1 axis perpendicular to the X-axis by a Z1-axis actuator, On the aforementioned X-axis table, a Z2-axis table is provided that can be moved along the Z2 axis perpendicular to the X-axis by a Z2-axis actuator, A C1 axis is provided on the Z1 axis table, extends along the Z1 axis, and the first workpiece is rotatably mounted on it by a C1 axis motor, A C2 axis is provided on the Z2 axis table, extends along the Z2 axis, and a second workpiece is rotatably mounted to it by a C2 axis motor, A column provided at the opposite position of the X-axis table, A Y-axis table is provided in the column and is movable along the Y-axis perpendicular to the X-axis and the Z1-axis by a Y-axis actuator, A rotatable S1 axis is provided on the Y-axis table, extends parallel to the C1 axis, and to which the first tool is attached, A rotatable S2 axis is provided on the Y-axis table, extends parallel to the C2 axis, and a second tool is attached to it. A temperature controller capable of adjusting the distance between the S1 axis and the S2 axis by heating or cooling the Y-axis table, The system includes a control device that synchronizes the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the first workpiece, synchronizes the C2-axis motor with the movements of the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the second workpiece so that it is identical to the first workpiece, and controls the temperature controller to adjust the distance between the S1 axis and the S2 axis.

[0011] According to the above configuration, the outer diameter error of the first and second tools is calculated from the finishing accuracy of the first and second workpieces, and the control unit adjusts the temperature of the temperature controller according to the outer diameter error, thereby adjusting the distance between the S1 axis and the S2 axis to absorb the outer diameter error.

[0012] The method for processing a scroll-shaped workpiece according to the second invention is: A bed and On the bed, an X-axis table that can move along the X-axis by an X-axis actuator, On the aforementioned X-axis table, a Z1-axis table is provided that can be moved along the Z1 axis perpendicular to the X-axis by a Z1-axis actuator, On the aforementioned X-axis table, a Z2-axis table is provided that can be moved along the Z2 axis perpendicular to the X-axis by a Z2-axis actuator, A C1 axis is provided on the Z1 axis table, extends along the Z1 axis, and the first workpiece is rotatably mounted on it by a C1 axis motor, A C2 axis is provided on the Z2 axis table, extends along the Z2 axis, and a second workpiece is rotatably mounted to it by a C2 axis motor, A column provided at the opposite position of the X-axis table, A Y-axis table is provided in the column and is movable along the Y-axis perpendicular to the X-axis and the Z1-axis by a Y-axis actuator, A rotatable S1 axis is provided on the Y-axis table, extends parallel to the C1 axis, and to which the first tool is attached, A rotatable S2 axis is provided on the Y-axis table, extends parallel to the C2 axis, and a second tool is attached to it. A scroll machining machine is prepared, which includes a temperature controller capable of adjusting the distance between the S1 axis and the S2 axis by heating or cooling the Y-axis table, The error in the vortex thickness of the first workpiece and the second workpiece is measured, The temperature of the temperature controller is adjusted to absorb the error in the vortex thickness, thereby adjusting the distance between the S1 axis and the S2 axis. The X-axis actuator, the Y-axis actuator, and the C1-axis motor are synchronized to perform scroll machining on the first workpiece, and the C2-axis motor is synchronized with the movements of the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the second workpiece so that it is identical to the first workpiece.

[0013] According to the above configuration, the outer diameter error of the first and second tools can be calculated from the finishing accuracy of the first and second workpieces, and by adjusting the temperature of the temperature controller according to the outer diameter error, the distance between the S1 axis and the S2 axis can be adjusted to absorb the outer diameter error. [Effects of the Invention]

[0014] As described above, according to the present invention, the temperature of the thermostat is adjusted so as to absorb the error in the scroll thickness, and the distance between the S1 axis and the S2 axis can be adjusted. Therefore, the production volume of the scroll-shaped workpiece can be doubled while maintaining the accuracy.

Brief Description of the Drawings

[0015] [Figure 1A] FIG. 8 is a perspective view showing a partially enlarged view of a scroll processing machine according to an embodiment of the present invention in which the axial distance is reduced by cooling. [Figure 1B] FIG. 11 is a perspective view showing a partially enlarged view of a scroll processing machine according to an embodiment of the present invention in which the axial distance is increased by heating. [Figure 2] FIG. 14 is a front view showing an example of a scroll field workpiece processed by a scroll processing machine. [Figure 3] FIG. 17 is a block diagram showing the functional configuration of an NC control device provided in the scroll processing machine. [Figure 4] (a), (b) and (c) are front views showing a state of machining the inner wall surface of the involute curve portion in the scroll-shaped workpiece. <​​​​​​​​​​​​​​​​​​This is a front view showing the machining process of the central part of a scroll-shaped workpiece. [Figure 12] This is a front view showing the machining process near the center of a scroll-shaped workpiece. [Figure 13] This is a front view showing the machining process near the center of a scroll-shaped workpiece. [Figure 14] This is a front view showing the machining process near the center of a scroll-shaped workpiece. [Figure 15] This flowchart shows the loading and unloading of workpieces by a loader. [Figure 16] This is a flowchart of the control process for adjusting the distance between axes. [Figure 17A] This is a perspective view showing a scroll machining machine according to an embodiment of the present invention, with the loader hand holding an unmachined workpiece and after machining is complete. [Figure 17B] This is a view equivalent to Figure 17A, showing the loader hand approaching the scroll machining center while holding the unprocessed workpiece. [Figure 17C] This is a view equivalent to Figure 17A, showing the state of unloading the chuck on the C1 axis. [Figure 17D] This is a view equivalent to Figure 17A, showing the rotation of the loader hand. [Figure 17E] This is a view equivalent to Figure 17A, showing how the X-axis table moves. [Figure 17F] This is a view equivalent to Figure 17A, showing the state of unloading the C2 axis chuck. [Figure 17G] This is a view equivalent to Figure 17A, showing the state in which an unprocessed workpiece is loaded onto the C2 axis. [Modes for carrying out the invention]

[0016] Embodiments of the present invention will be described below with reference to the drawings.

[0017] -Scroll machining machine configuration- Figure 1A shows a scroll machining machine 1 according to an embodiment of the present invention. This scroll machining machine 1 is, for example, a cutting machine and is equipped with a bed 2 that is placed on a mounting surface such as a factory. The scroll machining machine 1 may also be other machining equipment such as a grinding machine. The scroll machining machine 1 is equipped with a control unit 40 that controls the entire scroll machining machine 1. This control unit 40 is, for example, a microcomputer.

[0018] Although not shown in detail, the scroll machining center 1 is equipped with a gantry loader above the bed 2 for exchanging multiple workpieces 30 (hereinafter also referred to as WA1, WA2, WB1, WB2 as appropriate). This gantry loader comprises, for example, four vertical support columns and two horizontal travel rails, with one horizontal rail provided to move horizontally on these two travel rails. A lifting member is provided on this horizontal rail so as to be able to move up and down. The actuators that move the horizontal rail and the lifting member are not particularly limited and can be, for example, an air cylinder, an electric motor, or a hydraulic cylinder. With this configuration, the lifting member can move within a predetermined range on the bed 2. The loader is composed of these support columns, travel rails, horizontal rail, lifting member, and actuators that drive them.

[0019] The lifting member is provided with, for example, a rotatable rotary table 25 as shown in Figure 17A, and this rotary table 25 is equipped with three hand chucks A, B, and C.

[0020] Although not shown in the diagram, a workpiece stocker for placing unprocessed and processed workpieces is provided on the side of the bed 2. The workpiece stocker may be in the form of a conveyor belt for loading and unloading workpieces 30.

[0021] The first tool 5a and the second tool 5b may be automatically replaced from a tool stocker (not shown) under the control of the control unit 40.

[0022] In Figure 1A, a Y-axis column 6a extending vertically is provided on the bed 2 of the scroll machining center 1. A Y-axis table 6b is mounted so as to be able to move up and down along this Y-axis column 6a, that is, so as to be able to move along the Y-axis direction, which is the vertical direction.

[0023] The Y-axis table 6b is rotatably supported by a first tool 5a so as to be rotatable around the S1 axis, and by a second tool 5b so as to be rotatable around the S2 axis. As shown in Figure 3, the S1 axis is rotated independently by the S1 axis motor 4e, and the S2 axis is rotated independently by the S2 axis motor 4f. The Y-axis table 6b is driven to move up and down by a ball screw mechanism (not shown) provided in the Y-axis column 6a, and by a Y-axis motor 6c (Y-axis actuator) shown only in Figure 3.

[0024] As shown in Figures 1A and 17A, an X-axis rail 3b is installed on the bed 2, extending in the X-axis direction perpendicular to the S1 and S2 axes, and an X-axis table 3a is mounted so as to be slidable along this X-axis rail 3b. As also shown in Figure 3, this X-axis table 3a is driven to slide in the X-axis direction by an X-axis motor 3c, which acts as an X-axis actuator.

[0025] As shown in Figure 17A, a rail 4c extending in the Z1 axis direction parallel to the S1 axis and a rail 4d extending in the Z2 axis direction parallel to the S2 axis are installed on the X-axis table 3a, and the Z1 axis table 4a and Z2 axis table 4b are mounted on these rails 4c and 4d so as to be slidable along them. The Z1 axis table 4a is driven to slide in the Z1 axis direction by the Z1 axis motor 4g, which acts as a Z1 axis actuator as shown in Figure 3, and the Z2 axis table 4b is driven to slide in the Z2 axis direction by the Z2 axis motor 4h, which acts as a Z2 axis actuator as shown in Figure 3.

[0026] The Z1 axis table 4a is equipped with a first workpiece chuck 9a for detachably gripping workpieces WA1 and WB1 as first workpieces, and the Z2 axis table 4b is equipped with a second workpiece chuck 9b for detachably gripping workpieces WA2 and WB2 as second workpieces.

[0027] The first workpiece chuck 9a is rotatable around the first main spindle, the C1 axis, by the C1 axis motor 9c, and the second workpiece chuck 9b is rotatable around the second main spindle, the C2 axis, by the C2 axis motor 9d.

[0028] In Figure 17A and other figures, the workpiece 30 is depicted in a simplified cylindrical shape. However, in reality, as shown in an enlarged view in Figure 2, a scroll-shaped wall 32 is projected forward from the front surface (front in Figure 2). This scroll-shaped wall 32 consists of a central part 34 and an involute curve section 35. The central part 34 is formed in a predetermined region connecting the boundary points between the inner and outer wall surfaces of the scroll-shaped wall 32, and is formed in a shape other than an involute curve, such as an arc or a straight line. The involute curve section 35 has an outer wall surface 35A and an inner wall surface 35B that connect to the central part 34, and both wall surfaces 35A and 35B are formed in an involute curve shape with the same circle as their base circle. Therefore, both the X-axis and Y-axis directions are set to coincide with the radial direction of the base circle.

[0029] This scroll machining machine 1 is equipped with a control unit 40 as shown in Figure 3. The control unit 40 operates the Z1-axis motor 4g according to an NC program for machining scroll-shaped workpieces, thereby positioning the first tool 5a relative to one workpiece 30 (first workpiece WB1), and controls the operation of the X-axis motor 3c, Y-axis motor 6c, and C1-axis motor 9c to perform wall machining of the scroll-shaped wall 32 on the workpiece 30. The control unit 40 also operates the Z2-axis motor 4h in synchronization with the NC program, thereby positioning the second tool 5b relative to the other workpiece 30 (second workpiece WB2), and controls the operation of the X-axis motor 3c, Y-axis motor 6c, and C2-axis motor 9d to perform wall machining of the scroll-shaped wall 32 on the workpiece 30. The control unit 40 includes a data reading unit 42, an interpolation data calculation unit 44, and a pulse distribution unit 46 as functions involved in this machining control.

[0030] The data reading unit 42 reads and stores NC data (such as the machining shape and feed rate of the scroll-shaped wall 32) input from an external source. The interpolation data calculation unit 44 calculates interpolation data (details described later) for machining the scroll-shaped wall 32 based on the data read by the data reading unit 42 and outputs it. The pulse distribution unit 46 distributes pulses from the interpolation data to the X-axis, Y-axis, C1-axis, C2-axis, Z1-axis, Z2-axis, S1-axis, and S2-axis motors and outputs them to each axis motor.

[0031] -Scroll machining operation- (Method for processing scroll-shaped walls) Next, the method for processing the scroll-shaped wall 32 performed by this device will be described.

[0032] First, as shown in Figure 4(a), the centers of the first tool 5a and the second tool 5b are shifted relative to the center of the base circle BC of the involute curve in the negative direction (downward) along the Y-axis by the base circle radius ro, and at this Y-axis position, the first tool 5a and the second tool 5b are brought into contact with the radially outer portion of the inner wall surface 35B of the involute curve section 35, moving from right to left in the figure. At this time, it is also possible to bring them into contact with predetermined positions while machining the outermost end of the scroll-shaped wall by moving along the X-axis and C1 axis and the X-axis and C2 axis. In this state, the normal direction of the inner wall surface 35B at the contact point between the first tool 5a and the second tool 5b and the inner wall surface 35B coincides with the X-axis direction.

[0033] Next, from this state, without changing the relative positions of the first tool 5a and the second tool 5b in the Y-axis direction (i.e., without operating the Y-axis motor 6c), the workpieces 30 are rotated in a counterclockwise direction as shown in the figure, around the center of the base circle BC (around the C1 axis and C2 axis), and the relative movement of one workpiece 30 and the first tool 5a, and the other workpiece 30 and the second tool 5b, in the X-axis direction is caused by the decrease in radius of the inner wall surface 35B due to this rotation. Through this operation, as shown in Figures 4(b) and (c), the inner wall surface 35B is machined from its radially outer portion toward its radially inner portion, while maintaining the direction of the normal of the wall surface 35B at the contact point between the first tool 5a and the inner wall surface 35B in the X-axis direction, and while maintaining the direction of the normal of the wall surface 35B at the contact point between the second tool 5b and the inner wall surface 35B in the X-axis direction.

[0034] As this machining progresses, as shown in Figures 6 and 7, the first tool 5a and the second tool 5b each move from the involute curved inner wall surface 35B to the center 34. Furthermore, as shown in Figure 5(a), in the area where the center 34 is being machined, as shown in Figures 8 to 11, in addition to the relative movement in the X-axis direction and rotation around the C1 axis, the first tool 5a and one of the workpieces 30 are also moved relative to each other in the Y-axis direction, so that the normal direction of the wall surface of the center 34 at the point of contact between them is always maintained in the X-axis direction. In addition to the relative movement in the X-axis direction and rotation around the C2 axis, the second tool 5b and the other workpiece 30 are also moved relative to each other in the Y-axis direction, so that the normal direction of the wall surface of the center 34 at the point of contact between them is always maintained in the X-axis direction.

[0035] As the machining of the central part 34 progresses in this manner, when the endpoint of the central part 34 is reached, the first tool 5a and the second tool 5b will automatically be positioned at a distance of the base circle radius ro in the opposite direction (i.e., positive direction) in the Y-axis direction relative to the center of the base circle, as shown in Figure 12. From this state, as shown in Figures 4(a) to (c), by rotating the workpiece 30 around the C1 axis without performing relative movement in the Y-axis direction, and moving the first tool 5a and the workpiece 30 relative only in the X-axis direction, and by rotating the workpiece 30 around the C2 axis without performing relative movement in the Y-axis direction, and moving the second tool 5b and the workpiece 30 relative only in the X-axis direction, the outer wall surface 35A of the involute curve portion 35 can be continuously machined from its radially inner portion to its radially outer portion, as shown in Figures 13, 14, and further in Figures 5(b) and (c).

[0036] In other words, this method allows for continuous machining from the involute curved inner wall surface 35B through the central part 34 to the involute curved outer wall surface 35A by, regardless of the machining point on the scroll-shaped wall 32, by continuously contacting the machining point with the first tool 5a from the same side, and rotating one workpiece 30 while keeping the direction of the normal to the wall surface at this contact point always in the X-axis direction, and by also contacting the other workpiece 30 with the second tool 5b, and rotating the other workpiece 30 while keeping the direction of the normal to the wall surface at this contact point always in the X-axis direction.

[0037] Although not shown in detail in the diagram, in recent years, algebraic spirals have been used instead of conventional involute curves to miniaturize scroll-shaped workpieces 30. However, the machining principle is the same as that of involute curves; machining can be performed by moving in the Y direction in accordance with the gradually changing radius of the base circle during the machining of the curve.

[0038] (Overall processing process) Next, the overall operation of the scroll processing machine 1 according to this embodiment will be explained using Figures 15, 16, etc.

[0039] First, as shown in Figure 15, the operation starts in step S01.

[0040] In step S02, as shown in Figure 17A, loader hands B and C hold the unprocessed workpieces WB1 and WB2, respectively.

[0041] Next, in step S03, workpiece WA1 is machined on axis C1 and workpiece WA2 is machined on axis C2.

[0042] In step S04, the loader enters the aircraft as shown in Figure 17B.

[0043] In step S05, as shown in Figure 17C, the machined workpiece WA1 on the C1 axis chuck is unloaded using the A hand.

[0044] In step S06, loader hands A, B, and C are rotated as shown in Figure 17D.

[0045] In step S07, the unprocessed workpiece WB1 of the B hand is loaded onto the C1 axis.

[0046] In step S08, as shown in Figure 17E, the X-axis table 3a is moved to swap the positions of the C1 axis and the C2 axis.

[0047] In step S09, as shown in Figure 17F, the machined workpiece WA2 is unloaded from the C2 axis chuck using the B hand.

[0048] In step S10, loader hands A, B, and C are rotated.

[0049] In step S11, as shown in Figure 17G, the unprocessed workpiece WB2 of the C-hand is loaded onto the C2 axis.

[0050] In step S12, the loader is evacuated from the aircraft.

[0051] In step S13, WB1 on the C1 axis and WB2 on the C2 axis begin machining according to the scroll-shaped wall machining method described above. The loader then discharges the machined workpieces WA1 and WA2.

[0052] (Inspection process) In addition to the machining process, the machining accuracy of the machined workpieces WA1 and WA2 is measured as appropriate during the inspection process.

[0053] Specifically, first, control is initiated in step S20, and in step S21, the dimensions of the machined workpiece are measured.

[0054] In step S22, the vortex thickness is measured. That is, the thickness between the involute curved outer wall surface 35A and the involute curved inner wall surface 35B is measured, and the control unit determines the measurement result.

[0055] If the vortex thickness is thinner than specified, it is considered that there is an error in the tool diameter, so the process proceeds to step S23, and the control unit 40 instructs the temperature controller 41 to lower the temperature, as shown in Figure 1A.

[0056] In step S24, the temperature on the Y-axis is checked, and the temperature is reduced until the target temperature is reached.

[0057] Once the temperature reduction is achieved, in step S25, the distance between the S1 axis and the S2 axis decreases due to the relationship with the linear expansion coefficient based on the Y axis. This absorbs the error in the tool diameter, so the process proceeds to step S26 and the machining process resumes.

[0058] If the vortex thickness does not change compared to the specified value, it is assumed that there is no error in the tool diameter, so proceed to step S26 and resume the machining process.

[0059] If the vortex thickness is greater than specified, it is considered that an error has occurred in the tool diameter, so the process proceeds to step S28, and the control unit 40 instructs the temperature controller 41 to raise the temperature, as shown in Figure 1B.

[0060] In step S29, the temperature on the Y-axis is checked, and the temperature is increased until the target temperature is reached.

[0061] Once the temperature rise is achieved, in step S30, the distance between the S1 axis and the S2 axis increases due to the relationship with the linear expansion coefficient based on the Y axis. This absorbs the error in the tool diameter, so the process proceeds to step S26 and the machining process is resumed.

[0062] Once machining is complete in step S31, at least a portion of the machined workpiece is again transported to the workpiece measurement position in step S32, and the inspection process is repeated.

[0063] Therefore, according to the scroll processing machine 1 of this embodiment, the production volume of scroll-shaped workpieces can be doubled while maintaining accuracy.

[0064] (Other embodiments) The present invention may also have the following configuration in the above embodiment.

[0065] In this invention, the X-axis and Y-axis directions are mutually orthogonal directions and can be freely set as long as they coincide with the radial direction of the base circle of the involute curve.

[0066] In this invention, the types of the first tool 5a and the second tool 5b are irrelevant, and various tools suitable for wall surface machining, including end mills and grinding wheels, can be applied.

[0067] The present invention is broadly applicable to scroll-shaped walls 32 in which at least a portion of the inner and outer wall surfaces are formed in a spiral shape, such as an involute shape, and the shape of the remaining portion, such as the outermost end 36 of the scroll (Figure 2), may be any shape. For processing, the processing method according to the present invention or other processing methods may be used as appropriate.

[0068] In the above embodiment, a microcomputer was described as an example of a control unit. However, the control unit may be physically configured in any way as long as it controls the scroll machining machine 1 and the temperature controller 41. For example, the control unit may utilize software (programs), such as a microcomputer or a programmable logic control unit (PLC). Alternatively, the control unit may be implemented by combining hardware (circuit components).

[0069] In the above embodiment, the distance between the S1 axis and the S2 axis is adjusted by heating or cooling the Y-axis table 6b with the temperature controller 41. However, the temperature controller 41 may also be provided on the X-axis table 3a to adjust the distance between the C1 axis and the C2 axis to absorb errors in the tool diameter. This, of course, applies when the S1 axis and S2 axis are provided on the X-axis table 3a side.

[0070] The embodiments described above are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or uses. [Explanation of Symbols]

[0071] 1 Scroll machining center 2 beds 3a X-axis table 3b X-axis rail 3c X-axis motor (X-axis actuator) 4a Z1 axis table 4b Z2 axis table 4c rail 4D rail 4e S1 Axis Motor 4f S2-axis motor 4g Z1 axis motor (Z1 axis actuator) 4h Z2 axis motor (Z2 axis actuator) 5a 1st tool 5b 2nd tool 6a Y-axis column 6b Y-axis table 6c Y-axis motor (Y-axis actuator) 9a First work chuck 9b Second work chuck 9c C1 axis motor 9d C2-axis motor 25 Rotary Table 30 Scroll Shape Workpieces 32 Scroll-shaped walls 34 Center 35 Involute Curve Section 35A Involute curved exterior wall surface 35B Involute curved inner wall surface 36. Scroll to the outermost edge 40 Control Unit 41 Temperature controller 42 Data reading unit 44 Interpolation Data Calculation Unit 46. ​​Pulse distribution section WA1, WB1 First Work WA2, WB2 Second Work WA1, WA2 machined workpieces WB1, WB2 Unprocessed Workpieces

Claims

1. A bed and On the bed, there is an X-axis table that can move along the X-axis by an X-axis actuator, On the aforementioned X-axis table, a Z1-axis table is provided that can be moved along the Z1 axis perpendicular to the X-axis by a Z1-axis actuator, On the aforementioned X-axis table, a Z2-axis table is provided that can be moved along the Z2 axis perpendicular to the X-axis by a Z2-axis actuator, A C1 axis is provided on the Z1 axis table, extends along the Z1 axis, and the first workpiece is rotatably mounted on it by a C1 axis motor, A C2 axis is provided on the Z2 axis table, extends along the Z2 axis, and a second workpiece is rotatably mounted to it by a C2 axis motor, A column provided at the opposite position of the X-axis table, A Y-axis table is provided in the column and is movable along the Y-axis perpendicular to the X-axis and the Z1-axis by a Y-axis actuator, A rotatable S1 axis is provided on the Y-axis table, extends parallel to the C1 axis, and to which the first tool is attached, A rotatable S2 axis is provided on the Y-axis table, extends parallel to the C2 axis, and a second tool is attached to it. A temperature controller capable of adjusting the distance between the S1 axis and the S2 axis by heating or cooling the Y-axis table, The system includes a control device that synchronizes the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the first workpiece, synchronizes the C2-axis motor with the movements of the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the second workpiece so that it is identical to the first workpiece, and controls the temperature controller to adjust the distance between the S1 axis and the S2 axis. A scroll machining machine characterized by the following features.

2. A bed and On the bed, there is an X-axis table that can move along the X-axis by an X-axis actuator, On the aforementioned X-axis table, a Z1-axis table is provided that can be moved along the Z1 axis perpendicular to the X-axis by a Z1-axis actuator, On the aforementioned X-axis table, a Z2-axis table is provided that can be moved along the Z2 axis perpendicular to the X-axis by a Z2-axis actuator, A C1 axis is provided on the Z1 axis table, extends along the Z1 axis, and the first workpiece is rotatably mounted on it by a C1 axis motor, A C2 axis is provided on the Z2 axis table, extends along the Z2 axis, and a second workpiece is rotatably mounted to it by a C2 axis motor, A column provided at the opposite position of the X-axis table, A Y-axis table is provided in the column and is movable along the Y-axis perpendicular to the X-axis and the Z1-axis by a Y-axis actuator, A rotatable S1 axis is provided on the Y-axis table, extends parallel to the C1 axis, and to which the first tool is attached, A rotatable S2 axis is provided on the Y-axis table, extends parallel to the C2 axis, and a second tool is attached to it. A scroll machining machine is prepared, which includes a temperature controller capable of adjusting the distance between the S1 axis and the S2 axis by heating or cooling the Y-axis table, The error in the vortex thickness of the first workpiece and the second workpiece is measured, The temperature of the temperature controller is adjusted to absorb the error in the vortex thickness, thereby adjusting the distance between the S1 axis and the S2 axis. The X-axis actuator, the Y-axis actuator, and the C1-axis motor are synchronized to perform scroll machining on the first workpiece, and the C2-axis motor is synchronized with the movements of the X-axis actuator, the Y-axis actuator, and the C1-axis motor to perform scroll machining on the second workpiece so that it is identical to the first workpiece. A method for processing a scroll-shaped workpiece, characterized by the following features.

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