Processing apparatus and processing method

Abstract

To provide a processing device that can be miniaturized and has improved portability. [Solution] A processing device 50 for cutting a feedable segment 30A comprises a guide section 100 that defines the feed direction of the segment 30A, and a rotating blade 201 that, when the direction intersecting the feed direction is defined as the intersecting direction, contacts the feedable segment 30A from the intersecting direction and cuts the segment 30A. In addition, the outer contact section 110 and the inner contact section 120 grip the segment 30A in the intersecting direction.

Description

Technical Field

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[0001] The present disclosure relates to a processing apparatus and a processing method.

Background Art

[0002] Conventionally, in order to seal between a rotating body and a stationary body (such as a casing) of a steam turbine, a seal ring having fins is attached to the stationary body. Since the gap between the fins of the seal ring and the rotating body affects the sealing performance, the protruding amount (protrusion height) of the fins needs to be strictly controlled. For example, Patent Document 1 discloses an apparatus for cutting the tip of a fin in order to adjust the protruding amount of the fin.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The apparatus of Patent Document 1 includes an arm having a cutting jig attached to its tip and a rotating column to which the base end of the arm is fixed. By rotating the arm around the rotating column, the cutting jig moves in an arc, so that cutting processing following the arc-shaped trajectory can be performed on the fins.

[0005] However, for example, when the radius of curvature of the member to be processed is large, the movable range of the cutting jig has to be expanded by extending the arm or the like. Therefore, in order to cope with a large processing target, it was essential to increase the size of the apparatus. In addition, there was also a concern that the portability of the apparatus would decrease as the size of the apparatus increased.

[0006] This disclosure is made in view of these circumstances and aims to provide a processing apparatus and processing method that can be miniaturized and have improved portability. [Means for solving the problem]

[0007] To solve the above problems, the processing apparatus and processing method of this disclosure employ the following means.

[0008] A processing apparatus according to one aspect of the present disclosure is a processing apparatus for cutting a workpiece that is being fed, comprising: a guide section that defines the feeding direction of the workpiece; and a cutting section that, when the direction intersecting the feeding direction is defined as the intersecting direction, contacts the workpiece being fed from the intersecting direction and cuts the workpiece.

[0009] A machining method according to one aspect of the present disclosure is a machining method for cutting a workpiece while feeding it, wherein the workpiece is fed along a defined feed direction, and when the direction intersecting the feed direction is defined as the intersecting direction, the machine cuts the workpiece by contacting it from the intersecting direction as it is being fed. [Effects of the Invention]

[0010] According to this disclosure, miniaturization can be achieved and portability can be improved. [Brief explanation of the drawing]

[0011] [Figure 1] This is a partial longitudinal cross-section of a steam turbine. [Figure 2] This is a diagram of the seal ring viewed from the axial direction. [Figure 3] This is a view of the segment from the axial direction. [Figure 4] This is a plan view of a processing apparatus according to one embodiment of the present disclosure. [Figure 5] A side view of a processing apparatus according to one embodiment of the present disclosure. [Figure 6] This is a plan view of a processing apparatus according to one embodiment of the present disclosure (cutting the jaw surface). [Figure 7] It is a cross-sectional view taken along the cutting line VII-VII shown in FIG. 6. [Figure 8] It is a cross-sectional view taken along the cutting line VIII-VIII shown in FIG. 6. [Figure 9] It is a plan view of a processing apparatus according to an embodiment of the present disclosure (cutting fins). [Figure 10] It is a cross-sectional view taken along the cutting line X-X shown in FIG. 9. [Figure 11] It is a cross-sectional view taken along the cutting line XI-XI shown in FIG. 9. [Mode for Carrying Out the Invention]

[0012] Hereinafter, a processing apparatus 50 according to an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the "radial direction" is with respect to the axis X, and the "inner / outer side" is based on the radial direction.

[0013] [Overview] As shown in FIGS. 1 and 2, the processing apparatus 50 according to the present embodiment is an apparatus for cutting a seal ring 30 attached to a stationary member 20 of a steam turbine, for example. The stationary member 20 is, for example, a casing of a steam turbine. The seal ring 30 is an annular component centered on the axis X. As shown in FIG. 3, the direct processing target (workpiece) of the processing apparatus 50 may be a segment 30A obtained by dividing the seal ring 30 in the circumferential direction. In this case, the segment 30A is an arc-shaped component.

[0014] As shown in Fig. 1, a T-shaped jaw portion 31 is formed on the outer peripheral portion of the seal ring 30 (segment 30A). The jaw portion 31 is a portion that engages with a T-shaped groove 21 formed inside the stationary body 20. When the jaw portion 31 engages with the groove 21, the seal ring 30 is fixed to the stationary body 20 in the radial direction. The jaw portion 31 has a back surface 32 that is the outer peripheral surface of the seal ring 30, and a jaw surface 33 that is substantially parallel to the back surface 32 and is on the inner side of the back surface 32 (the circumferential surface facing the inside). The jaw surface 33 is also a surface that contacts the circumferential surface (the circumferential surface facing the outside) that defines the groove 21. On the ventral surface 35 which is the inner peripheral surface of the seal ring 30 (segment 30A), a plurality of fins (ribs) 36 protruding inward are formed. The plurality of fins 36 are spaced apart from each other and arranged in parallel in the direction of the axis X.

[0015] Inside the seal ring 30 fixed to the stationary body 20, a rotating body 10 that rotates around the axis X is installed. The rotating body 10 is, for example, a rotor of a steam turbine. The tip (the tip of the sword) of the fin 36 of the seal ring 30 is close to the outer peripheral surface of the rotating body 10, and a desired seal gap will be set. When setting the seal gap, if the seal gap is large, the jaw surface 33 is cut. As a result, the seal ring 30 can be moved in a direction in which the seal gap becomes smaller. That is, the seal gap can be reduced. On the other hand, when the seal gap is small, the seal gap can be increased by cutting the tip of the fin 36. The processing device 50 according to the present embodiment is a device that can, for example, process such a seal ring 30, specifically, cut the jaw surface 33 and / or the tip of the fin 36. Note that the processing target is not limited to an arc-shaped part such as the segment 30A.

[0016] [Regarding the processing device 50] Hereinafter, the detailed configuration of the processing device 50 will be described. As shown in Figs. 4 and 5, the processing device 50 includes a guide portion 10 and a cutting portion 200.

[0017] The guide section 100 is the part that defines the feeding direction of segment 30A. The guide section 100 has multiple contact mechanisms 101, each consisting of a pair of outer contact sections 110 and inner contact sections 120. The outer contact sections 110 and inner contact sections 120 are attached, for example, to a base plate 131 of a plate-shaped component that extends in a horizontal plane. As shown in Figure 4, the multiple contact mechanisms 101 are arranged in parallel, for example, along a first direction D1 that extends horizontally. In addition, the paired outer contact portion 110 and / or inner contact portion 120 extend horizontally and face each other in a second direction D2 that is perpendicular to the first direction D1.

[0018] As shown in Figure 5, the outer contact portion 110 includes an outer base 113, an outer shaft 112, and a cylindrical ring (disc member) 111. The outer base 113 is a component mounted on the base plate 131. The outer base 113 is configured to slide along the second direction D2. However, the outer base 113 can be fixed in any position along the second direction D2. The outer shaft 112 is an axial component connected to and fixed to the outer base 113. The outer shaft 112 extends, for example, in a third direction D3 (vertical direction) perpendicular to the two directions of the first direction D1 and the second direction D2. A cylindrical ring 111 is rotatably attached to the outer shaft 112. The cylindrical ring 111 has a cylindrical shape in which its outer diameter does not change along the third direction D3 in order to ensure stable contact with the back surface 32.

[0019] The inner contact portion 120 includes an inner base 123, an inner shaft 122, and a spinning top-shaped ring (disc member) 121. The inner base 123 is a component mounted on the base plate 131. The inner base 123 is configured to slide along the second direction D2. However, the inner base 123 can be fixed in any position along the second direction D2. The inner shaft 122 is an axial component connected to and fixed to the inner base 123. The inner shaft 122 extends, for example, in a third direction D3. A spinning top-shaped ring 121 is rotatably attached to the inner shaft 122. The spinning top-shaped ring 121 is shaped so that its thickness (dimension along the third direction D3) decreases towards the outer circumference, allowing it to easily fit into the gaps between the fins 36.

[0020] As shown in Figures 4 and 5, the paired outer contact portion 110 and inner contact portion 120 are configured to slide along the second direction D2. However, the outer contact portion 110 and inner contact portion 120 can be fixed at any position along the second direction D2. Each contact mechanism 101 is configured such that (1) when the outer contact portion 110 is fixed, the inner contact portion 120 is biased toward the outer contact portion 110, and (2) when the inner contact portion 120 is fixed, the outer contact portion 110 is biased toward the inner contact portion 120. The force that biases the inner contact portion 120 or the outer contact portion 110 is applied, for example, by an elastic member.

[0021] The movement of the outer contact portion 110 and the inner contact portion 120 can be achieved, for example, by the following mechanism. In other words, as shown in Figure 5, the outer base 113 of the outer contact portion 110 and the inner base 123 of the inner contact portion 120 are attached to the base plate 131 so that they can slide in the second direction D2 to move closer to / away from each other. The base end of the through shaft portion 132, which extends in the second direction D2, is connected to and fixed to the inner base 123 of the inner contact portion 120. The through shaft portion 132 penetrates the outer base 113 of the outer contact portion 110 and protrudes outward (to the left in the figure) from the outer base 113. A coil spring 133, acting as an elastic member, is wound around the portion of the through shaft 132 that protrudes from the outer base 113. One end of the coil spring 133 is in contact with the outer base 113. The other end of the coil spring 133 is in contact with a flange-shaped spring stopper 134 attached to the through shaft 132. The spring stopper 134 is configured to be fixed at any position along the extending direction of the through shaft portion 132. This allows the distance between the spring stopper 134 and the outer base 113 along the second direction D2, and consequently the amount of compression of the coil spring 133, to be adjusted as desired. When the outer contact portion 110 is fixed and the inner contact portion 120 is made slidable, the compressed coil spring 133 applies a force to the inner base 123 via the through shaft portion 132 that biases the inner contact portion 120 toward the outer contact portion 110. On the other hand, when the inner contact portion 120 is fixed and the outer contact portion 110 is made slidable, the compressed coil spring 133 applies a force to the outer base 113 that biases the outer contact portion 110 toward the inner contact portion 120. In either case, the elastic force of the compressed coil spring 133 biases one of the outer contact portion 110 and the inner contact portion 120 toward the other.

[0022] As shown in Figure 4, the cutting section 200 has a rotating blade 201 that is driven to rotate around a rotation axis along a third direction D3, for example. The position of the rotating blade 201 (the position of the rotation axis) is fixed and does not move during the cutting of segment 30A. However, the position of the rotating blade 201 can, of course, be adjusted when positioning the rotating blade 201 before cutting. The rotating blade 201 is positioned, for example, in the central part of a plurality of contact mechanisms 101 arranged in parallel in a first direction D1. In the case of Figure 4, four contact mechanisms 101 are arranged in parallel in the first direction D1, and the rotating blade 201 is positioned between the second and third contact mechanisms 101 in the parallel direction.

[0023] The processing apparatus 50 configured as described above can be used, for example, as follows.

[0024] [[Processing of jaw surface 33]] As shown in Figure 6, when machining the jaw surface 33, the back surface 32, which is the outer circumferential surface of the seal ring 30 (segment 30A), is used as the reference surface. In other words, the jaw surface 33 is machined by tracing the back surface 32 as a reference. The back surface 32 is, for example, a cylindrical surface.

[0025] In this case, as shown in Figures 6 and 7, a segment 30A is first interposed between the outer contact portion (first contact portion) 110 and the inner contact portion (second contact portion) 120 of each contact mechanism 101.

[0026] Next, the cylindrical rings 111 of each outer contact portion 110 are brought into contact with the back surface 32 of segment 30A.

[0027] Next, the position of each outer contact portion 110 (each outer base 113) is fixed at the position where the cylindrical ring 111 of each outer contact portion 110 is in contact with the back surface 32. As a result, the outer contact portion 110 (cylindrical ring 111) is positioned to conform to the shape of the back surface 32.

[0028] Next, each coil spring 133 is compressed to bias the inner contact portion 120 toward the outer contact portion 110. At this time, since segment 30A is sandwiched between the outer contact portion 110 and the inner contact portion 120, the biased spool-shaped ring 121 of the inner contact portion 120 contacts the underside 35 of segment 30A, pressing segment 30A toward the cylindrical ring 111 of the outer contact portion 110. As a result, the back surface 32 of segment 30A makes sure to contact the cylindrical ring 111 of the outer contact portion 110.

[0029] Next, as shown in Figures 6 and 8, the rotating blade 201 (for example, an end mill) of the cutting unit 200 is set in a position where it can cut the jaw surface 33. Specifically, the rotating blade 201 is set so that it extends horizontally and contacts the jaw surface 33 from a direction that intersects with the feed direction (described later) (hereinafter referred to as the "intersecting direction").

[0030] Next, the rotating blade 201 is driven to start cutting. Simultaneously, the segment 30A is fed at an appropriate speed, roughly along the direction of extension of the segment 30A. At this time, since multiple outer contact parts 110 (cylindrical rings 111) are arranged to conform to the shape of the back surface 32, and the position of each outer contact part 110 is fixed, the feeding direction of the segment 30A is determined by each contact mechanism 101. In other words, the segment 30A is fed horizontally, conforming to the shape of the back surface 32, of the back surface (first surface) 32 and the front surface (second surface) 35 that face each other in the intersecting direction. Here, the position of the rotating blade 201 is fixed, and the rotating blade 201 is in contact with the jaw surface 33 from the intersecting direction. Therefore, by advancing the segment 30A in accordance with the shape of the back surface 32, the rotating blade 201 cuts the jaw surface 33 in accordance with the shape of the back surface 32. This makes it possible to form a jaw surface 33 parallel to the back surface 32, or to cut the jaw surface 33 while maintaining a state parallel to the back surface 32.

[0031] [[Processing of the tip of fin 36]] When machining the tip of the fin 36, the inner circumferential surface 35 of the seal ring 30 (segment 30A) is used as the reference surface. In other words, the tip of the fin 36 is machined by tracing the surface 35 as the reference. The surface 35 may also be an elliptical cylindrical surface.

[0032] In this case, first, as shown in Figures 9 and 10, a segment 30A is interposed between the outer contact portion (second contact portion) 110 and the inner contact portion (first contact portion) 120 of each contact mechanism 101.

[0033] Next, the spool-shaped rings 121 of each inner contact portion 120 are brought into contact with the ventral surface 35 of the segment 30A. The spool-shaped ring 121 has a shape that does not interfere with each fin 36.

[0034] Next, the position of each inner contact portion 120 (each inner base 123) is fixed at the point where the top-shaped ring 121 of each inner contact portion 120 is in contact with the ventral surface 35. As a result, the inner contact portion 120 (top-shaped ring 121) is positioned to conform to the shape of the ventral surface 35.

[0035] Next, each coil spring 133 is compressed to bias the outer contact portion 110 toward the inner contact portion 120. At this time, since segment 30A is sandwiched between the outer contact portion 110 and the inner contact portion 120, the biased cylindrical ring 111 of the outer contact portion 110 contacts the back surface 32 of segment 30A, pressing segment 30A toward the top-shaped ring 121 of the inner contact portion 120. As a result, the underside 35 of segment 30A makes sure to contact the top-shaped ring 121 of the inner contact portion 120.

[0036] Next, as shown in Figures 9 and 11, the rotating blade 201 (for example, a T-slot cutter) of the cutting unit 200 is set in a position where it can cut the tip of the fin 36. Specifically, the rotating blade 201 is set so that it contacts the tip of the fin 36 from the intersecting direction.

[0037] Next, the rotating blade 201 is driven to start cutting. Simultaneously, the segment 30A is fed at an appropriate speed, roughly along the direction of extension of the segment 30A. At this time, multiple inner contact parts 120 (top-shaped rings 121) are arranged to conform to the shape of the ventral surface 35, and the position of each inner contact part 120 is fixed, so the feeding direction of the segment 30A is determined by each contact mechanism 101. In other words, the segment 30A is fed horizontally in accordance with the shape of the ventral surface 35, of the ventral surface (first surface) 35 and back surface (second surface) 32 that face each other in the intersecting direction. Here, since the position of the rotating blade 201 is fixed, by advancing the segment 30A to follow the shape of the ventral surface 35, the rotating blade 201 cuts the tip of the fin 36 to follow the shape of the ventral surface 35. This makes it possible to form a tip of the fin 36 that is parallel to the ventral surface 35, or to cut the tip of the fin 36 while maintaining a state parallel to the ventral surface 35.

[0038] [effect] The segment 30A can be cut by the rotating blade 201 of the fixed-position cutting unit 200 while feeding the segment 30A along the feed direction defined by the guide unit 100. This eliminates the need to modify the rotating blade 201, such as by increasing its range of motion, even when using large segments 30A (segments 30A with a large diameter). Therefore, compared to processing equipment that moves the cutting section 200, the processing equipment 50 can be made smaller, improving portability.

[0039] When the outer contact portion 110 and the inner contact portion 120 sandwich the segment 30A in an intersecting direction, the outer contact portion 110 and the inner contact portion 120 can define the feeding direction. Furthermore, if, for example, the outer contact portion 110 is fixed and the inner contact portion 120 is biased toward the outer contact portion 110, tracing can be performed based on the back surface 32 that contacts the outer contact portion 110 (cylindrical ring 111). Also, if, for example, the inner contact portion 120 is fixed and the outer contact portion 110 is biased toward the inner contact portion 120, tracing can be performed based on the ventral surface 35 that contacts the inner contact portion 120 (top-shaped ring 121).

[0040] If the outer contact portion 110 has a cylindrical ring 111 that is rotatable around an axis extending in the third direction D3, the segment 30A can be fed smoothly. Also, if the inner contact portion 120 has a top-shaped ring 121 that is rotatable around an axis extending in the third direction D3, the segment 30A can be fed smoothly.

[0041] If the guide portion 100 has a coil spring 133, the elastic force of the coil spring 133 causes the inner contact portion 120 or the outer contact portion 110 to press the segment 30A toward the outer contact portion 110 or the inner contact portion 120. As a result, the segment 30A is fed while in reliable contact with the outer contact portion 110 or the inner contact portion 120, enabling high-precision contouring.

[0042] [Note] The processing apparatus and processing method according to this embodiment, as described above, can be understood, for example, as follows.

[0043] A processing apparatus (50) according to a first aspect of the present disclosure is a processing apparatus (50) for cutting a workpiece (30A) that is being fed, comprising: a guide section (100) that defines the feeding direction of the workpiece (30A); and a cutting section (200) that, when the direction intersecting the feeding direction is defined as the intersecting direction, contacts the workpiece (30A) being fed from the intersecting direction and cuts the workpiece (30A).

[0044] The device includes a guide section (100) that defines the feeding direction of the workpiece (30A), and a cutting section (200) that contacts the feeding workpiece (30A) from an intersecting direction to cut the workpiece (30A). Therefore, the workpiece (30A) can be fed along the feeding direction defined by the guide section (100) while being cut by the cutting section (200). This eliminates the need to modify the cutting section (200) to increase its range of motion, even for large workpieces (30A). As a result, the processing device (50) can be made smaller and more portable compared to a processing device (50) of the type where the cutting section (200) is moved.

[0045] In the processing apparatus (50) according to a second aspect of the present disclosure, in the first aspect, the guide portion (100) has a first contact portion (110;120) that contacts the first surface (32;35) and a second contact portion (120;110) that contacts the second surface (35;32) of the workpiece (30A) which are facing each other in the intersecting direction, and the first contact portion (110;120) and the second contact portion (120;110) sandwich the workpiece (30A) in the intersecting direction.

[0046] The guide portion (100) has a first contact portion (110;120) that contacts the first surface (32;35) and a second contact portion (120;110) that contacts the second surface (35;32) of the workpiece (30A) which is opposed to the first surface (32;35) in the intersecting direction. Since the first contact portion (110;120) and the second contact portion (120;110) sandwich the workpiece (30A) in the intersecting direction, the feed direction can be defined by the first contact portion (110;120) and the second contact portion (120;110).

[0047] In the processing apparatus (50) according to a third aspect of the present disclosure, in the second aspect, the first contact portion (110;120) is fixed, and the second contact portion (120;110) is biased toward the first contact portion (110;120).

[0048] Since the first contact portion (110;120) is fixed and the second contact portion (120;110) is biased toward the first contact portion (110;120), contour machining can be performed using the surface in contact with the first contact portion (110;120) as a reference. Furthermore, machining can be performed regardless of the shape of the reference surface.

[0049] In the processing apparatus (50) according to the fourth aspect of this disclosure, in the third aspect, the workpiece (30A) is arc-shaped, the first contact portion (110; 120) contacts the outer circumferential surface (32) of the workpiece (30A), and the cutting portion (200) cuts a surface (33) substantially parallel to the outer circumferential surface (32).

[0050] The workpiece (30A) has an arc shape, the first contact portion (110; 120) contacts the outer circumferential surface (32) of the workpiece (30A), and the cutting portion (200) cuts a surface (33) that is substantially parallel to the outer circumferential surface (32). Therefore, contour machining based on the outer circumferential surface (32) can be performed on the surface that is substantially parallel to the outer circumferential surface (32).

[0051] In the processing apparatus (50) according to the fifth aspect of this disclosure, in the third aspect, the workpiece (30A) is arc-shaped, the first contact portion (110; 120) contacts the inner circumferential surface (35) of the workpiece (30A), and the cutting portion (200) cuts the tip of a projection (36) erected from the inner circumferential surface (35).

[0052] The workpiece (30A) is arc-shaped, the first contact portion (110;120) contacts the inner circumferential surface (35) of the workpiece (30A), and the cutting portion (200) cuts the tip of the projection (36) that rises from the inner circumferential surface (35). Thus, contour machining based on the inner circumferential surface (35) can be performed on the tip of the projection (36) that rises from the inner circumferential surface (35).

[0053] In the processing apparatus (50) according to the sixth aspect of the present disclosure, the first contact portion (110;120) and / or the second contact portion (120;110) have a disc member (111;121) that is rotatable about an axis extending in a direction perpendicular to the two directions of the feed direction and the intersecting direction.

[0054] The first contact portion (110;120) and / or the second contact portion (120;110) have a disc member (111;121) that is rotatable around an axis extending in a direction perpendicular to the two directions of the feed direction and the intersecting direction, so that the workpiece (30A) can be fed smoothly.

[0055] In the processing apparatus (50) according to the seventh aspect of this disclosure, in any of the second to sixth aspects, the guide portion (100) has an elastic member (133) that biases the second contact portion (120;110) toward the first contact portion (110;120).

[0056] The guide section (100) has an elastic member (133) that biases the second contact section (120;110) toward the first contact section (110;120). As a result, the elastic force of the elastic member (133) causes the second contact section (120;110) to press the workpiece (30A) toward the first contact section (110;120). This ensures that the workpiece (30A) is fed while in secure contact with the first contact section (110;120), enabling high-precision contour machining.

[0057] A machining method according to the eighth aspect of this disclosure is a machining method for cutting a workpiece (30A) while feeding it, wherein the workpiece (30A) is fed along a defined feed direction, and when the direction intersecting the feed direction is defined as the intersecting direction, the machine cuts the workpiece (30A) by contacting it from the intersecting direction as it is being fed. [Explanation of Symbols]

[0058] 10. Solids of revolution 20 Stationary Objects 21 Groove 30 sealing rings 30A segment 31. Jaw 32 Back (outer surface) 33. Jaw surface 35 Ventral surface (inner surface) 36 Fins (ridges) 50 Processing equipment 100 Information Department 101 Contact mechanism 110 Outer contact part 111 Cylindrical ring (disc member) 112 Outer shaft 113 Outer base 120 Inner contact part 121. Spindle-shaped ring (disc member) 122 Inner shaft 123 Inner base 131 Base plate 132 Through shaft section 133 Coil spring (elastic component) 134 Spring Stopper 200 Cutting section 201 Rotary blade

Claims

1. A processing device for cutting a workpiece that is fed to be processed, A guide section that defines the feeding direction of the workpiece, When the direction intersecting the feed direction is defined as the intersecting direction, the cutting unit contacts the workpiece being fed from the intersecting direction and cuts the workpiece, Equipped with, The aforementioned guide section is A first contact portion that contacts the first surface of the workpiece, among the first and second surfaces of the workpiece facing each other in the aforementioned intersecting direction, A second contact portion that contacts the second surface, and Elastic member that biases the second contact portion toward the first contact portion It has, The first contact portion and the second contact portion sandwich the workpiece in the intersecting direction, The first contact portion is fixed, The second contact portion is elastically biased toward the first contact portion. Processing equipment.

2. The workpiece is shaped like an arc. The first contact portion contacts the outer circumferential surface of the workpiece, The cutting portion cuts a surface parallel to the outer surface. The processing apparatus according to claim 1.

3. The workpiece is shaped like an arc. The first contact portion contacts the inner circumferential surface of the workpiece, The cutting section cuts the tip of the protrusion that is erected from the inner circumferential surface. The processing apparatus according to claim 1.

4. The first contact portion and / or the second contact portion have a disc member that is rotatable about an axis extending in a direction perpendicular to the two directions of the feed direction and the intersecting direction. The processing apparatus according to claim 1.

5. A machining method in which a workpiece is fed along a defined feed direction, and the direction intersecting the feed direction is defined as the intersecting direction, and the workpiece is cut by contacting the feeding workpiece from the intersecting direction, The workpiece has a first surface and a second surface that face each other in the intersecting direction, The feed direction of the workpiece is defined by a first contact portion that contacts and is fixed to the first surface, and a second contact portion that contacts the second surface and is elastically biased toward the first contact portion. Processing method.

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