阅读说明：本技术 加工装置及加工方法 (Machining device and machining method ) 是由 山田毅 三好哲典 喜多野聪 青山昌宽 角舛武志 田中雄也 山本直辉 于 2019-04-18 设计创作，主要内容包括：本发明的目的在于提供一种能够提高加工精度的加工装置及加工方法。加工装置(1)为对一体地具有板状的第1弯曲面部(4)和从第1弯曲面部(4)的边缘曲折而延伸的板状的平面部(3)的工件(2)进行加工的装置。并且,加工装置(1)具备：第1夹紧装置(15),其具有与第1弯曲面部(4)抵接的抵接部(19)及向抵接部(19)的方向按压第1弯曲面部(4)的按压部(22),并限制第1弯曲面部(4)的板厚方向的移动；第2夹紧装置(16),其能够向平面部(3)的板厚方向移动,并支承平面部(3)；及切削装置(12),其对第1弯曲面部(4)进行切削加工。(The invention aims to provide a processing device and a processing method capable of improving processing precision. A machining device (1) is a device for machining a workpiece (2) integrally having a plate-shaped first curved surface section (4) and a plate-shaped planar section (3) extending from the edge of the first curved surface section (4) in a zigzag manner. The machining device (1) is provided with: a 1 st clamp device (15) which has an abutting part (19) abutting against the 1 st curved surface part (4) and a pressing part (22) pressing the 1 st curved surface part (4) in the direction of the abutting part (19), and which restricts the movement of the 1 st curved surface part (4) in the plate thickness direction; a 2 nd clamping device (16) which can move towards the plate thickness direction of the plane part (3) and supports the plane part (3); and a cutting device (12) for cutting the 1 st curved surface section (4).)

1. A processing device for processing a workpiece integrally having a plate-like 1 st part and a plate-like 2 nd part extending from an edge of the 1 st part in a zigzag manner, the processing device comprising:

a regulating portion having a contact portion which contacts with one surface of the 1 st portion and a pressing portion which presses the other surface of the 1 st portion in a direction of the contact portion, and regulating movement of the 1 st portion in a plate thickness direction;

a support portion that is movable in a plate thickness direction of the 2 nd portion and supports the 2 nd portion; and

and a processing unit that processes the other surface of the part 1.

2. The machining device according to claim 1, comprising:

an abutment determination section that determines whether or not the abutment portion abuts against the 1 st portion;

a driving unit that moves the supporting unit to move the 2 nd part; and

and a control unit that drives the driving unit so that the contact portion is brought into contact with the 1 st portion, according to the determination by the contact determination unit.

3. The machining device according to claim 1 or 2, comprising:

a distance deriving part for deriving a distance between the contact part and the other surface of the 1 st part;

a driving unit that moves the supporting unit to move the 2 nd part; and

and a control unit that drives the driving unit so that the contact portion contacts the 1 st portion, based on the distance derived by the distance deriving unit.

4. The processing apparatus according to any one of claims 1 to 3, comprising:

an angle derivation unit that derives an angle formed by the 1 st part and the 2 nd part;

a driving unit that moves the supporting unit to move the 2 nd part; and

and a control unit that drives the driving unit so that the contact portion contacts the 1 st portion, based on the angle derived by the angle deriving unit.

5. The processing apparatus according to any one of claims 1 to 4, comprising:

a load deriving portion that derives a load acting on the pressing portion;

a driving unit that moves the supporting unit to move the 2 nd part; and

and a control unit that drives the drive unit so as to reduce the load, based on the load derived by the load derivation unit.

6. A method for processing a workpiece integrally including a plate-like 1 st portion and a plate-like 2 nd portion extending from an edge of the 1 st portion in a zigzag manner, the method comprising:

pressing the other surface of the 1 st portion by a pressing portion to bring one surface of the 1 st portion into contact with an abutting portion, thereby restricting movement of the 1 st portion in a plate thickness direction;

a step of supporting the 2 nd part so as to allow the 2 nd part to move in a plate thickness direction; and processing the other surface of the part 1.

Technical Field

The present invention relates to a processing apparatus and a processing method.

Background

Aircraft assemblies such as the fuselage or main wing of an aircraft are constructed from structural components such as elongated brackets (frames). For the purpose of improving strength and the like, such a bracket is formed to have a desired cross-sectional shape by bending a cross section in a longitudinal direction of a plate-like member, and is formed to have a curved shape curved along the longitudinal direction because a body, a main wing, and the like to which the bracket is applied have a curved shape. Therefore, the stent has a complicated shape.

For the purpose of weight reduction or the like, brackets used in such airplanes are subjected to machining in the plate thickness direction (hereinafter referred to as "plate thickness machining") such as machining for locally reducing the plate thickness. Conventionally, such plate thickness processing is performed by a method called chemical milling (chemical milling) in which a holder is immersed in an etching solution.

Prior art documents

Patent document

Patent document 1: japanese Kokai publication Hei-5-31836

Disclosure of Invention

Technical problem to be solved by the invention

However, the chemical milling requires a lot of manual work, the flow time is long, and the cost for maintaining and treating the etching solution is also required, so that there is a problem that the cost is increased.

In order to solve such a problem, it is conceivable to machine the bracket to have a plate thickness. When the thickness of the bracket is processed, a support device for supporting the bracket having a complicated shape as described above may be used (for example, patent document 1). In the device of patent document 1, the module is pressed against the reference surface by the side surface clamping cylinder and the bottom surface clamping cylinder, and the front surface (side surface) and the bottom surface of the module are clamped simultaneously.

However, as described above, since the bracket is a component manufactured by sheet metal forming (sheet metal forming), a deviation occurs in a bending angle or the like. Therefore, the shape of each stent is sometimes different. Further, even one stent may not be molded uniformly, and the cross-sectional shape may vary depending on the position in the longitudinal direction.

In the device of patent document 1, since the shape of the reference surface of the pressing bracket is uniform, when the device of patent document 1 is used to support a bracket having a non-uniform cross-sectional shape in the longitudinal direction, a non-uniform portion is generated on the reference surface of the supporting device. In the device of patent document 1, the holder is pressed against the reference surface by the side surface clamping cylinder and the bottom surface clamping cylinder. If the holder in a state in which an inconsistent portion is generated on the reference surface is in a state in which both the front surface (side surface) and the bottom surface are simultaneously pressed, the holder may be deformed so as to float from the reference surface at a portion not pressed. If the thickness of the module in such a floating state is processed, accurate processing cannot be performed, and there is a possibility that the processing accuracy is lowered.

The present invention has been made in view of such circumstances, and an object thereof is to provide a machining apparatus and a machining method capable of improving machining accuracy.

Means for solving the technical problem

In order to solve the above problems, the following method is adopted in the processing apparatus and the processing method of the present invention.

A machining device according to one aspect of the present invention is a machining device for machining a workpiece integrally including a plate-shaped 1 st portion and a plate-shaped 2 nd portion extending by bending from an edge of the 1 st portion, the machining device including: a regulating portion having a contact portion which contacts with one surface of the 1 st portion and a pressing portion which presses the other surface of the 1 st portion in a direction of the contact portion, and regulating movement of the 1 st portion in a plate thickness direction; a support portion that is movable in a plate thickness direction of the 2 nd portion and supports the 2 nd portion; and a processing unit that processes the other surface of the part 1.

In the above configuration, the pressing portion presses the 1 st portion, and the 1 st portion is restricted from moving in the plate thickness direction by bringing one surface of the 1 st portion into contact with the abutting portion. Thus, the position of the 2 nd portion in a state where the 1 st portion is in contact with the contact portion differs depending on the angle formed between the 1 st portion and the 2 nd portion. In the above configuration, the support portion that supports the 2 nd portion is movable in the plate thickness direction of the 2 nd portion, and therefore, is movable to a position corresponding to the 2 nd portion. Thus, the 2 nd part can be supported by moving the support portion regardless of the position of the 2 nd part. Therefore, even in a workpiece in which the angle formed by the 1 st portion and the 2 nd portion is several degrees, the 2 nd portion can be supported by the support portion in a state where the 1 st portion is in contact with the contact portion. Therefore, even in a workpiece having a complicated shape such as the 1 st portion and the 2 nd portion, the 1 st portion can be brought into contact with the contact portion to machine the workpiece in a stable state. According to the above, the machining accuracy can be improved.

Further, since the 2 nd portion can be supported at a position corresponding to the 2 nd portion, stress generated in the workpiece in a state where the 1 st portion is brought into contact with and the 2 nd portion is supported can be suppressed. This can suppress deformation of the workpiece. Therefore, the workpiece can be prevented from being deformed so as to float from the abutting portion (deformed so as to separate the 1 st portion from the abutting portion). As described above, the workpiece can be machined in a more stable state by reliably bringing the 1 st portion into contact with the contact portion.

A machining device according to an aspect of the present invention may include: an abutment determination section that determines whether or not the abutment portion abuts against the 1 st portion; a driving unit that moves the supporting unit to move the 2 nd part; and a control unit that drives the drive unit so that the contact portion is brought into contact with the 1 st portion according to the determination by the contact determination unit.

When the support portion is driven by the drive portion to move the 2 nd portion, the 1 st portion integrally formed with the 2 nd portion also moves. That is, the driving unit can move the 1 st part through the 2 nd part by driving the supporting unit.

In the above configuration, the driving unit is driven so that the contact portion is brought into contact with the 1 st portion according to the determination by the contact determination unit. Thus, the part 1 can be brought into contact with the contact portion more reliably, and the workpiece can be machined in a stable state.

A machining device according to an aspect of the present invention may include: a distance deriving part for deriving a distance between the contact part and the other surface of the 1 st part; a driving unit that moves the supporting unit to move the 2 nd part; and a control unit that drives the driving unit so that the contact portion contacts the 1 st portion, based on the distance derived by the distance deriving unit.

In the above configuration, the driving unit is driven based on the distance derived by the distance deriving unit so that the contact portion is brought into contact with the 1 st portion. Thus, the part 1 can be brought into contact with the contact portion more reliably, and the workpiece can be machined in a stable state.

A machining device according to an aspect of the present invention may include: an angle derivation unit that derives an angle formed by the 1 st part and the 2 nd part; a driving unit that moves the supporting unit to move the 2 nd part; and a control unit that drives the driving unit so that the contact portion contacts the 1 st portion, based on the angle derived by the angle deriving unit.

In the above configuration, the driving unit is driven according to the angle derived by the angle deriving unit so that the contact portion is brought into contact with the 1 st portion. Thus, the part 1 can be brought into contact with the contact portion more reliably, and the workpiece can be machined in a stable state.

A machining device according to an aspect of the present invention may include: a load deriving portion that derives a load acting on the pressing portion; a driving unit that moves the supporting unit to move the 2 nd part; and a control unit that drives the drive unit so as to reduce the load, based on the load derived by the load derivation unit.

When the 1 st portion of the workpiece is separated from the contact portion, a load in a direction opposite to the pressing direction acts on the pressing portion. In the above configuration, the load is derived by the load deriving unit, and the driving unit is driven so as to reduce the load based on the derived load. Thus, the part 1 can be brought into contact with the contact portion more reliably, and the workpiece can be machined in a stable state.

A processing method according to an aspect of the present invention is a processing method for a workpiece integrally including a plate-shaped 1 st portion and a plate-shaped 2 nd portion extending in a zigzag manner from an edge of the 1 st portion, the processing method including the steps of: pressing the other surface of the 1 st portion by a pressing portion to bring one surface of the 1 st portion into contact with an abutting portion, thereby restricting movement of the 1 st portion in a plate thickness direction; a step of supporting the 2 nd part so as to allow the 2 nd part to move in a plate thickness direction; and processing the other surface of the part 1.

Effects of the invention

According to the present invention, the machining accuracy can be improved.

Drawings

Fig. 1 is a perspective view showing a main part of a processing apparatus according to an embodiment of the present invention.

Fig. 2 is a view schematically showing the II-II facing end face of fig. 1.

Fig. 3 is a view schematically showing the III-III facing end face of fig. 1.

Fig. 4 is a view schematically showing IV-IV of fig. 1 looking into the end face.

Fig. 5 is a block diagram of the processing device of fig. 1.

Fig. 6 is a view showing a state where the 1 st curved surface portion and the contact portion do not contact each other in the processing apparatus of fig. 2.

Fig. 7 is a view showing a state in which the 1 st curved surface portion abuts against the abutting portion in the processing apparatus of fig. 2.

Fig. 8 is a schematic end view showing a modification of the processing apparatus of fig. 1.

Fig. 9 is a schematic end view showing a modification of the processing apparatus of fig. 1.

Detailed Description

Hereinafter, an embodiment of a machining apparatus and a machining method according to the present invention will be described with reference to fig. 1 to 5.

The machining apparatus 1 according to the present embodiment is used for manufacturing a bracket or the like of an aircraft module constituting a stiffener for an aircraft fuselage structure.

As shown in fig. 1, the machining apparatus 1 includes a support device 11 that supports a workpiece (workpiece) 2, a cutting device (machining unit) 12 that performs cutting on the workpiece 2 supported by the support device 11, and a control device (control unit) 13 that controls the support device 11 and the cutting device 12.

The workpiece 2 according to the present embodiment is a long member, is curved so as to have an arc shape in the longitudinal direction, and has a substantially Z-shaped cross-sectional shape in the longitudinal direction. The workpiece 2 is formed by bending a plate-like member made of an aluminum alloy to give a cross-sectional shape, and bending the member subjected to the bending to form an arc in the longitudinal direction.

The workpiece 2 integrally has: a flat surface portion (2 nd portion) 3 having a flat surface as a plate-like member extending substantially horizontally; a 1 st curved surface portion (1 st portion) 4 having a curved surface, which is a plate-like member extending so as to curve upward substantially perpendicularly from one edge in the width direction of the planar portion 3; a 2 nd curved surface portion 5 having a curved surface as a plate-like member extending to bend downward substantially perpendicularly from the other edge in the width direction of the planar portion 3; and a lip portion 6 projecting substantially perpendicularly from the lower edge of the 2 nd curved surface portion 5 toward the 1 st curved surface portion 4.

The machining device 1 according to the present embodiment is a device that reduces the plate thickness by performing cutting on the flat surface portion 3, the 1 st curved surface portion 4, and the 2 nd curved surface portion 5 in order to reduce the weight of the workpiece 2.

The support device 11 is a device that supports the workpiece 2 and conveys the workpiece 2 in a predetermined direction. In the present embodiment, the workpiece 2 is supported by the support device 11 in a state where the flat surface portion 3 is substantially horizontal and the 1 st curved surface portion 4 is substantially vertical.

The support device 11 includes a 1 st clamp device (a limiting portion) 15 that limits movement of the 1 st curved surface portion 4 in the plate thickness direction, a 2 nd clamp device (a supporting portion) 16 that supports the planar portion 3, and a drive portion 17 (see fig. 5) that moves the 2 nd clamp device 16 in the plate thickness direction of the planar portion 3.

A plurality of 1 st clamping devices 15 are provided at predetermined intervals along the longitudinal direction of the workpiece 2. The 1 st clips 15 each have an abutting portion 19 abutting against the one surface 4a of the 1 st curved surface portion 4 and a pressing portion 22 pressing the other surface 4b of the 1 st curved surface portion 4 in the direction of the abutting portion 19 (see also fig. 3).

The contact portion 19 includes a columnar contact roller 20 and a contact roller support portion 21 that rotatably supports the contact roller 20 around a central axis extending in a substantially vertical up-down direction. The abutment roller 20 is supported by the abutment roller support portion 21 so that the outer peripheral surface thereof is substantially perpendicular. The abutment roller support portion 21 is fixed to the main body 14 of the support device 11, and supports the abutment roller 20 so as to restrict movement in the horizontal direction and the vertical direction. A motor 26 for driving the abutment roller 20 to rotate about the central axis is provided to a part or all of the plurality of abutment portions 19.

The pressing portion 22 is disposed apart from the contact portion 19 by a predetermined distance and is disposed to face the contact portion 19. The pressing portion 22 includes a columnar pressing roller 23, a pressing roller support portion 24 that rotatably supports the pressing roller 23 about a central axis extending in a substantially vertical up-down direction, and a cylinder portion 25 that moves the pressing roller support portion 24 in the direction of the contact portion 19. The pressing roller 23 is supported by the pressing roller supporting portion 24 so that the outer peripheral surface thereof is substantially perpendicular. The cylinder portion 25 moves the pressing roller support portion 24 and the pressing roller 23 in the direction of the contact portion 19 by a driving force such as a hydraulic pressure.

In this way, the 1 st clamping device 15 restricts the movement of the 1 st curved surface portion 4 in the plate thickness direction by bringing the one surface 4a of the 1 st curved surface portion 4 into contact with the outer peripheral surface of the contact roller 20 by the pressing force of the pressing portion 22. In other words, the 1 st clamp device 15 restricts the movement of the 1 st curved surface portion 4 in the plate thickness direction by sandwiching the 1 st curved surface portion 4 between the pressing portion 22 (in detail, the pressing roller 23) and the contact portion 19 (in detail, the contact roller 20). Further, since the movement of the abutment roller 20 is restricted by the abutment roller support portion 21, the 1 st clamp device 15 restricts the movement of the 1 st curved surface portion 4 with the outer peripheral surface of the abutment roller 20 as a reference surface. The abutment roller 20 and the pressing roller 23 are rotationally driven around the central axis by the driving force of the motor 26, and convey the workpiece 2 in a predetermined direction.

A plurality of 2 nd clamping devices 16 are provided at predetermined intervals along the longitudinal direction of the workpiece 2. Each of the 2 nd clamping devices 16 has an upper roller portion 30 that abuts against the planar portion 3 from one surface direction (upper side in fig. 1 and 2) and a lower roller portion 31 that abuts against the planar portion 3 from another surface direction (lower side in fig. 1 and 2), and is movable in the plate thickness direction of the planar portion 3 (see also fig. 2).

The upper roller portion 30 includes a columnar upper roller 32 and an upper roller support portion 33 that rotatably supports the upper roller 32 about a central axis extending in a substantially horizontal direction. The upper roller 32 is supported by an upper roller support portion 33 so that the outer peripheral surface thereof becomes a surface perpendicular to the vertical surface. The upper roller support portion 33 is fixed to the main body 14 of the support device 11, and supports the upper roller 32 so as to be movable in the plate thickness direction of the planar portion 3 (the vertical direction described in fig. 1 and 2).

The lower roller portion 31 includes a cylindrical lower roller 34 and a lower roller support portion (not shown) that rotatably supports the lower roller 34 about a central axis extending in a substantially horizontal direction. The lower roller 34 is supported by a lower roller support portion so that the outer peripheral surface thereof is a surface perpendicular to the vertical plane. The lower roller support portion is fixed to the main body 14 of the support device 11, and supports the lower roller 34 so as to be movable in the plate thickness direction of the planar portion 3 (the vertical direction described in fig. 1 and 2).

In this way, the 2 nd clamping device 16 is driven to rotate about the center axis while holding the planar portion 3 between the upper roller 32 and the lower roller 34, thereby conveying the workpiece 2 in a predetermined direction.

The driving portion 17 includes an upper roller driving portion (not shown) connected to the upper roller 32 and configured to move the upper roller 32 in the plate thickness direction of the planar portion 3 (the vertical direction in fig. 1 and 2), and a lower roller driving portion (not shown) configured to move the lower roller 34 in the plate thickness direction of the planar portion 3. The driving section 17 moves the upper roller 32 and the lower roller 34 so as to be able to sandwich the planar section 3, while interlocking the upper roller driving section and the lower roller driving section.

The cutting device 12 includes an end mill 37 extending in the plate thickness direction of the planar portion 3. The end mill 37 is movable in the plate thickness direction of the 1 st curved surface portion 4, and as shown in fig. 4, contacts the workpiece 2 supported by the support device 11 to cut the workpiece 2.

The processing apparatus 1 is provided with various sensors. Specifically, as shown in fig. 5, the apparatus includes a contact determination section 41 that determines whether or not the contact roller 20 is in contact with the second surface 4b of the 1 st curved surface section 4, a distance derivation section 42 that derives a distance between the contact roller 20 and the second surface 4b of the 1 st curved surface section 4, an angle derivation section 43 that derives an angle formed by the 1 st curved surface section 4 and the plane section 3, and a load derivation section 44 that measures a load acting on the cylinder section 25.

The abutment determination section 41 is constituted by, for example, a touch sensor that senses contact and a determination section that determines whether or not the abutment roller 20 abuts against the 1 st curved surface section 4 based on information from the touch sensor. The touch sensor is provided on the outer peripheral surface of the abutment roller 20. The determination unit and the touch sensor may be provided as the same device, or may be provided in different devices. When provided in a different device, the determination section may be provided in the control device 13.

The distance deriving unit 42 is constituted by, for example, an ultrasonic sensor that emits ultrasonic waves in a predetermined direction, and a distance calculating unit that derives the distance between the abutment roller 20 and the other surface 4b of the 1 st curved surface portion 4 based on information from the ultrasonic sensor. The ultrasonic sensor is provided in the contact portion 19 and emits ultrasonic waves toward the workpiece 2. The distance calculating unit and the ultrasonic sensor may be provided as the same device, or may be provided in different devices. When provided in a different device, the distance calculation section may be provided in the control device 13.

Instead of the touch sensor and the ultrasonic sensor, the contact determination unit 41 and the distance derivation unit 42 may use a camera that images the contact portion 19 and the workpiece 2. At this time, the determination section may determine whether or not a gap is formed between the abutment roller 20 and the 1 st curved surface section 4 based on the shot data shot by the camera, and determine that abutment is performed when it is determined that no gap is formed. Then, when it is determined that a gap is formed between the abutment roller 20 and the 1 st curved surface portion 4, the distance calculation section may calculate the distance of the gap from the captured data, thereby deriving the distance between the abutment roller 20 and the other surface 4b of the 1 st curved surface portion 4.

The angle deriving unit 43 is constituted by, for example, a camera for capturing an image of a part or all of the workpiece 2 and an angle calculating unit for calculating an angle formed by the 1 st curved surface portion 4 and the flat surface portion 3 based on image data from the camera. The camera and the angle calculating unit may be provided as the same device, or may be provided in different devices. When provided in a different device, the angle calculation portion may be provided in the control device 13.

The load deriving unit 44 is constituted by, for example, a load sensor that senses a resistance acting on the cylinder portion 25 provided in the 1 st clamp device 15, and a load calculating unit that calculates a load acting on the cylinder portion 25 based on information from the load sensor. The load sensor and the load calculation unit may be provided as the same device, or may be provided in different devices. When provided in a different device, the load calculation portion may be provided in the control device 13.

The control device 13 is composed of, for example, a cpu (central Processing unit), a ram (random access memory), a rom (read Only memory), and a computer-readable storage medium. In addition, as an example, a series of processes for realizing various functions are stored in a storage medium or the like in the form of a program, and the various functions are realized by a process/arithmetic process in which the CPU reads the program into a RAM or the like and executes information. The program may be installed in advance in a ROM or another storage medium, provided in a state stored in a computer-readable storage medium, transmitted via a wired or wireless communication mechanism, or the like. The computer-readable storage medium refers to a magnetic disk, an optical magnetic disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.

As shown in fig. 5, the control device 13 includes a drive control unit 46 that controls the drive unit 17 based on data from the contact determination unit 41, the distance derivation unit 42, the angle derivation unit 43, and the load derivation unit 44.

The drive control unit 46 drives the drive unit 17 to bring the abutment roller 20 into abutment with the 1 st curved surface portion 4 according to the judgment of the abutment judgment unit 41. Specifically, when the contact determination unit 41 determines that the contact roller 20 is in contact with the 1 st curved surface portion 4, the drive unit 17 is controlled so that the upper roller 32 and the lower roller 34 maintain the positions. When the contact determination section 41 determines that the contact roller 20 is not in contact with the 1 st curved surface section 4, the upper roller 32 and the lower roller 34 are moved so that the 1 st curved surface section 4 is in contact with the contact section 19.

Then, the drive control unit 46 drives the drive unit 17 so that the abutment roller 20 abuts on the 1 st curved surface portion 4 according to the distance derived by the distance deriving unit 42. Specifically, the upper roller 32 and the lower roller 34 are moved so that the 1 st curved surface portion 4 is moved in the direction of the contact portion 19 by the distance derived by the distance deriving portion 42.

Then, the drive control unit 46 drives the drive unit 17 so that the abutment roller 20 abuts on the 1 st curved surface portion 4 according to the angle derived by the angle deriving unit 43. Specifically, the upper roller 32 and the lower roller 34 are moved so that the 1 st curved surface portion 4 is moved in the direction of the contact portion 19 by an amount corresponding to the angle derived by the angle deriving portion 43.

Then, the drive control unit 46 drives the drive unit 17 so that the load is reduced, based on the load derived by the load deriving unit 44. Specifically, the load applied to the cylinder portion 25 is measured by the load deriving portion 44, and the upper roller 32 and the lower roller 34 are moved so that the load becomes equal to or less than a predetermined threshold value.

Next, the operation of the machining device 1 according to the present embodiment will be described.

First, the workpiece 2 is introduced into the processing apparatus 1. At this time, the 1 st curved surface portion 4 is introduced so as to be positioned between the abutment roller 20 and the pressing roller 23, and the planar portion 3 is positioned between the upper roller 32 and the lower roller 34. The workpiece 2 introduced into the processing apparatus 1 is conveyed in a predetermined direction by the driving force of the motor 26 provided in the abutment roller 20.

The machining apparatus 1 conveys the workpiece 2 in a predetermined direction, and moves the pressing roller 23 in the direction of the contact portion 19 by the driving force from the cylinder portion 25 to press the other surface 4b of the 1 st curved surface portion 4 with the pressing roller 23. The 1 st curved surface portion 4 pressed by the pressing roller 23 is in contact with the abutment roller 20. The movement of the 1 st curved surface portion 4 in the plate thickness direction is restricted by bringing the one surface 4a of the 1 st curved surface portion 4 into contact with the abutment roller 20. In this manner, the 1 st curved surface portion 4 is clamped by the 1 st clamping device 15. At the same time, the processing apparatus 1 moves the upper roller 32 and the lower roller 34 to sandwich the planar portion 3. At this time, the 2 nd clamping device 16 holds the planar portion 3 so as to allow the planar portion 3 to move in the plate thickness direction (the up-down direction described in fig. 1 and the like).

At this time, when the 1 st curved surface portion 4 is determined to be separated from the contact portion 19 by the various sensors, the control device 13 controls the driving portion 17 to move the upper roller 32 and the lower roller 34 so that the 1 st curved surface portion 4 is brought into contact with the contact portion 19. For example, when the upper portion of the 1 st curved surface portion 4 is farther from the abutment roller 20 than the lower portion thereof as shown in fig. 6, the upper roller 32 and the lower roller 34 are moved upward as shown in fig. 7, whereby the entire workpiece 2 is rotated about the central axis extending in the longitudinal direction of the workpiece 2, and the 1 st curved surface portion 4 is brought into abutment with the abutment portion 19. For example, when the upper portion of the 1 st curved surface portion 4 is located closer to the abutment roller 20 than the lower portion, the 1 st curved surface portion 4 is brought into abutment with the abutment portion 19 by moving the upper roller 32 and the lower roller 34 downward.

In a state where the 1 st curved surface portion 4 is in contact with the contact portion 19, the machining device 1 moves the end mill 37 to bring the 1 st curved surface portion 4 into contact with the end mill 37. Then, the other surface 4b of the 1 st curved surface portion 4 is cut by the end mill 37 to reduce the plate thickness of the 1 st curved surface portion 4.

In this way, the machining device 1 according to the present embodiment machines the workpiece 2.

According to the present embodiment, the following operational effects are exhibited.

In the present embodiment, the pressing portion 22 presses the 1 st curved surface portion 4 to bring the one surface 4a of the 1 st curved surface portion 4 into contact with the contact portion 19, thereby restricting the movement of the 1 st curved surface portion 4 in the plate thickness direction. Thus, the position of the planar portion 3 in a state where the 1 st curved surface portion 4 is in contact with the contact portion 19 differs depending on the angle formed between the 1 st curved surface portion 4 and the planar portion 3.

In the present embodiment, the 2 nd clamping device 16 supporting the planar portion 3 is movable in the plate thickness direction of the planar portion 3, and therefore is movable to a position corresponding to the planar portion 3. Thereby, the planar portion 3 can be supported by moving the 2 nd clamping device 16 regardless of the position of the planar portion 3. Therefore, even in the workpiece 2 in which the angle formed by the 1 st curved surface portion 4 and the planar portion 3 is several degrees, the planar portion 3 can be supported by the 2 nd clamp 16 in a state in which the 1 st curved surface portion 4 is in contact with the contact portion 19. Therefore, even in the case of the workpiece 2 having a complicated shape, the workpiece 2 can be machined in a stable state by bringing the 1 st curved surface portion 4 into contact with the contact roller 20 (reference surface). According to the above, the machining accuracy can be improved.

Further, since the flat surface portion 3 can be supported at a position corresponding to the flat surface portion 3, it is possible to suppress stress generated in the workpiece 2 in a state where the 1 st curved surface portion 4 is brought into contact with and supports the flat surface portion 3. This can suppress deformation of the workpiece 2. Therefore, deformation of the workpiece 2 to float from the abutment roller 20 (deformation of the 1 st curved surface portion 4 to separate from the abutment roller 20) can be prevented. As described above, the 1 st curved surface portion 4 can be reliably brought into contact with the abutment roller 20 (reference surface) to machine the workpiece 2 in a more stable state.

When the 2 nd clamping device 16 is driven by the driving portion 17 to move the flat surface portion 3, the 1 st curved surface portion 4 formed integrally with the flat surface portion 3 also moves. That is, the driving portion 17 can move the 1 st curved surface portion 4 via the flat surface portion 3 by driving the 2 nd clamping device 16.

In the present embodiment, the driving unit 17 is driven so that the abutment roller 20 abuts on the 1 st curved surface portion 4 in accordance with the determination of the abutment determination unit 41. This enables the 1 st curved surface portion 4 to more reliably abut against the abutment roller 20 (reference surface) and the workpiece 2 to be machined in a stable state.

In the present embodiment, the driving unit 17 is driven so that the abutment roller 20 abuts on the 1 st curved surface portion 4 according to the distance derived by the distance deriving unit 42. This enables the 1 st curved surface portion 4 to more reliably abut against the abutment roller 20 (reference surface) and the workpiece 2 to be machined in a stable state.

In the present embodiment, the driving unit 17 is driven according to the angle derived by the angle deriving unit 43 so that the abutment roller 20 abuts on the 1 st curved surface portion 4. This enables the 1 st curved surface portion 4 to more reliably abut against the abutment roller 20 (reference surface) and the workpiece 2 to be machined in a stable state.

When the 1 st curved surface portion 4 of the workpiece 2 is separated from the abutment roller 20, a load in a direction opposite to the pressing direction acts on the pressing portion 22. In the present embodiment, the load is derived by the load deriving unit 44, and the driving unit 17 is driven so that the load is reduced according to the derived load. This enables the 1 st curved surface portion 4 to more reliably abut against the abutment roller 20 (reference surface) and the workpiece 2 to be machined in a stable state.

As described above, in the machining device 1 of the present embodiment, since the workpiece 2 can be machined in a stable state, the thickness variation of the machined workpiece 2 can be reduced. This can reduce the number of machining operations and shorten the machining process.

Next, a modification of the present embodiment will be described with reference to fig. 8.

The processing apparatus 100 shown in fig. 8 is used for processing the 2 nd curved surface portion 5. As shown in fig. 8, the contact portion 101 is provided so as to protrude from the main body 14 of the support device 11, and is disposed so as to enter between the flat portion 3 and the lip 6.

In the present modification, the other surface 5b of the 2 nd curved surface portion 5 is pressed by the pressing portion 22 (not shown), so that the one surface 5a of the 2 nd curved surface portion 5 is brought into contact with the contact portion 101. In this modification, the flat portion 3 is also supported by the 2 nd clamping device 16, as in the above embodiment. Since the configuration of the 2 nd clamping device 16 is the same as that of the above embodiment, detailed description thereof is omitted.

According to this modification, since the lip portion 6 does not interfere with the contact portion 19, the 2 nd curved surface portion 5 can be brought into contact with the contact portion 19, and therefore, the same effect as that of the above embodiment is exhibited also in the processing of the 2 nd curved surface portion 5.

In addition, the present modification and the above-described embodiment may be combined. That is, the machining device 100 described in the present modification may be provided continuously downstream of the machining device 1 described in the above embodiment. By doing so, the 1 st curved surface portion 4 and the 2 nd curved surface portion 5 can be continuously subjected to the processing for reducing the plate thickness with good accuracy. Therefore, the processing steps can be shortened.

The present invention is not limited to the invention according to the above-described embodiment, and can be modified as appropriate without departing from the scope of the invention.

For example, in the above-described embodiment, an example in which the contact determination unit 41, the distance derivation unit 42, the angle derivation unit 43, and the load derivation unit 44 are provided has been described, but the present invention is not limited to this. Any one of the contact determination unit 41, the distance derivation unit 42, the angle derivation unit 43, and the load derivation unit 44 may be selectively provided.

In the above embodiment, for example, a plurality of contact sensors may be provided on the abutment roller 20. With this configuration, it is possible to determine which portion of the 1 st curved surface portion 4 has floated, and therefore, it is possible to more accurately move the 2 nd clamp device 16 so that the 1 st curved surface portion 4 comes into contact with the contact portion 19.

The shape of the workpiece 2 is not limited to the shape of the above embodiment. For example, the workpiece may have a substantially L-shaped cross section in the longitudinal direction. Further, the workpiece may have a substantially Z-shaped cross section and may not be provided with the lip portion 6, or the workpiece may be provided with the lip portion 6 on both the 1 st curved surface portion 4 and the 2 nd curved surface portion 5.

In the above-described embodiment, an example in which the workpiece 2 is conveyed in a predetermined direction by being nipped by the rollers has been described, but the present invention is not limited to this. The workpiece 2 may be brought into contact with a block or the like without being conveyed.

In the above embodiment, the configuration in which one upper roller 32 and one lower roller 34 are provided in each of the 2 nd clamping devices 16 has been described, but the present invention is not limited to this. For example, as shown in fig. 9, two upper rollers 32 and two lower rollers 34 may be provided. With this configuration, the behavior of the upper roller 32a and the lower roller 34a on the 1 st curved surface portion 4 side and the behavior of the upper roller 32b and the lower roller 34b on the 2 nd curved surface portion 5 side can be interlocked, and the 1 st curved surface portion 4 can be brought into contact with the contact roller 20 more accurately.

Description of the symbols

1-machining device, 2-workpiece (object to be machined), 3-plane part (2 nd part), 4-1 st curved surface part (1 st part), 4 a-one surface, 4 b-another surface, 5-plane part (2 nd part), 6-lip part, 11-supporting device, 12-cutting device (machining part), 13-control device (control part), 15-1 st clamping device (limiting part), 16-2 nd clamping device (supporting part), 17-driving part, 19-abutting part, 20-abutting roller, 21-abutting roller supporting part, 22-pressing part, 23-pressing roller, 24-pressing roller supporting part, 25-cylinder part, 26-motor, 32-upper roller, 34-lower roller, 37-end mill.