Clamping device and processing machinery

Abstract

The clamping device includes: a tool spindle (121) having a convex portion (811); an additional processing head (131) provided with a concave portion (841) into which the convex portion (811) is inserted in the first direction and connected to the tool spindle (121) in a detachable manner; and a clamping mechanism portion that clamps the concave portion (841) and the convex portion (811) inserted into the concave portion (841). The additional processing head (131) has a pin member (861). A pin insertion hole (823) into which the pin member (861) is inserted in a second direction intersecting the first direction is provided in the tool spindle (121).

Description

Technical Field

[0001] The present invention relates to a clamping device and a processing machine. Background Art

[0002] For example, Japanese Unexamined Patent Application Publication No. 2016-215218 discloses an upper die holder including: a die holder main body having an upper die support portion; a clamping member having a lower portion fastened to the die holder main body; and an upper die held between the upper die support portion and the lower portion by the clamping member. A fall prevention key is provided in the clamping member. A fall prevention groove into which the fall prevention key is inserted is provided in the upper die.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2016-215218 Summary of the Invention

[0006] Problems to be Solved by the Invention

[0007] In the upper die holder disclosed in the above Patent Document 1, in order to prevent the upper die from falling, an engagement structure of a fall prevention key with respect to a fall prevention groove is used. However, when clamping failure occurs in the clamping member, there is a possibility that the fall prevention key disengages from the fall prevention groove. In this case, the fall of the upper die cannot be reliably prevented.

[0008] Therefore, an object of the present invention is to provide a clamping device and a processing machine including such a clamping device that solve the above problems and can more reliably maintain the connection between members even when clamping failure occurs.

[0009] Means for Solving the Problems

[0010] The clamping device according to the present invention includes: a first member having a convex portion; a second member provided with a concave portion into which the convex portion is inserted in a first direction and connected to the first member in a detachable manner; and a clamping mechanism portion that clamps the concave portion and the convex portion inserted into the concave portion. Either one of the first member and the second member has a pin member. A pin insertion hole into which the pin member is inserted in a second direction intersecting the first direction is provided in the other one of the first member and the second member.

[0011] According to the clamping device configured as such, the second direction, which is the insertion direction of the pin member relative to the pin insertion hole, is a direction that intersects the first direction, which is the insertion direction of the convex portion relative to the concave portion. Therefore, even if it is assumed that there is a poor clamping in the clamping mechanism portion that clamps the concave portion and the convex portion inserted into the concave portion, the pin member inserted into the pin insertion hole can function as an anti-disengagement member. As a result, it is possible to prevent the convex portion from detaching from the concave portion and more reliably maintain the connection between the first member and the second member.

[0012] In addition, preferably, the second direction is orthogonal to the first direction.

[0013] According to the clamping device configured as such, the second direction, which is the insertion direction of the pin member relative to the pin insertion hole, is a direction orthogonal to the first direction, which is the insertion direction of the convex portion relative to the concave portion. Therefore, the pin member inserted into the pin insertion hole can function as an anti-disengagement member.

[0014] In addition, preferably, the first member has a first convex portion and a second convex portion as convex portions. The second member is provided with a first concave portion for inserting the first convex portion and a second concave portion for inserting the second convex portion as concave portions. The pin member and the pin insertion hole are arranged on the straight line connecting the first convex portion and the first concave portion and the second convex portion and the second concave portion.

[0015] According to the clamping device configured as such, it is possible to more reliably prevent both the situation where the first convex portion detaches from the first concave portion and the situation where the second convex portion detaches from the second concave portion by using the pin member inserted into the pin insertion hole.

[0016] In addition, preferably, one member has a first pair of facing surfaces extending along the first direction. The other member has a second pair of facing surfaces extending along the first direction and facing the first pair of facing surfaces. The pin member is arranged so as to be able to advance and retreat between a first state disposed inside the first pair of facing surfaces and a second state protruding relative to the first pair of facing surfaces. The pin insertion hole opens on the second pair of facing surfaces.

[0017] According to the clamping device configured as such, the pin member is set to the first state, and at the same time, the convex portion is inserted into the concave portion, so that the first pair of facing surfaces and the second pair of facing surfaces face each other. At this time, the first pair of facing surfaces and the second pair of facing surfaces extend along the first direction, which is the insertion direction of the convex portion relative to the concave portion. Therefore, it is possible to prevent the first pair of facing surfaces and the second pair of facing surfaces from interfering with each other. In addition, in the state where the first pair of facing surfaces and the second pair of facing surfaces face each other, the pin member is moved from the first state to the second state, so that the pin member can be inserted into the pin insertion hole.

[0018] In addition, preferably, any one of the first member and the second member is a tool spindle. The other of the first member and the second member is an additional processing head that is detachably mounted relative to the tool spindle.

[0019] According to the clamping device configured as such, even when clamping failure occurs in the clamping mechanism section, the connection between the tool spindle and the additional processing head can be maintained more reliably.

[0020] The processing machine according to the present invention includes the clamping device described in any one of the above.

[0021] According to the processing machine configured as such, a processing machine having a clamping device capable of more reliably maintaining the connection between the first member and the second member can be realized.

[0022] Effects of the Invention

[0023] As described above, according to the present invention, a clamping device and a processing machine having such a clamping device can be provided: even when clamping failure occurs, the connection between members can be maintained more reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front view showing a processing machine in an embodiment of the present invention.

[0025] Figure 2 It is for Figure 1 a perspective view showing the disassembly and assembly of a tool spindle and an additional processing head in the processing machine.

[0026] Figure 3 It is showing Figure 1 a perspective view of a structure for supplying laser and material powder to an additional processing head in.

[0027] Figure 4 It is showing Figure 1 another perspective view of a structure for supplying laser and material powder to an additional processing head in.

[0028] Figure 5 It is schematically showing Figure 1 a front view of the first step of a workpiece processing flow in the processing machine in.

[0029] Figure 6 It is schematically showing Figure 1 a front view of the second step of a workpiece processing flow in the processing machine in.

[0030] Figure 7 It is schematically showing Figure 1 a front view of the third step of a workpiece processing flow in the processing machine in.

[0031] Figure 8 It is a perspective view of a tool spindle and an additional processing head when not connected.

[0032] Figure 9 It is a perspective view of the tool spindle showing the range enclosed by the double-dashed line IX in Figure 8 .

[0033] Figure 10 It is a perspective view of the additional processing head showing the range enclosed by the double-dashed line X in Figure 8 .

[0034] Figure 11 It is a perspective view of the tool spindle and the additional processing head when connected.

[0035] Figure 12 It is a sectional view showing the range enclosed by the double-dashed line XII of the tool spindle and the additional processing head in Figure 11 .

[0036] Figure 13 It is a sectional view showing the separated state of the tool spindle and the additional processing head in Figure 12 .

[0037] Figure 14 It is a perspective view showing the range enclosed by the double-dashed line XIV of the tool spindle and the additional processing head in Figure 11 .

[0038] Figure 15 It is a sectional view showing the first step of the connection operation between the tool spindle and the additional processing head.

[0039] Figure 16 It is a sectional view showing the second step of the connection operation between the tool spindle and the additional processing head.

[0040] Figure 17 It is a sectional view showing the third step of the connection operation between the tool spindle and the additional processing head. Detailed implementation mode

[0041] The embodiments of the present invention will be described with reference to the accompanying drawings. In addition, in the accompanying drawings referred to below, the same or corresponding components are labeled with the same reference numerals.

[0042] Figure 1 It is a front view of the processing machine in the embodiment of the present invention. In Figure 1 , the interior of the processing machine is shown by looking through the cover that constitutes the appearance of the processing machine. Figure 2 It is a perspective view showing the disassembly and assembly of the tool spindle and the additional processing head for the processing machine in Figure 1 .

[0043] Refer to Figure 1 and Figure 2, the processing machine 100 is an AM / SM hybrid processing machine that can perform additional processing (AM (Additive Manufacturing) processing) and removal processing (SM (Subtractive Manufacturing) processing) of workpieces. The processing machine 100 has a turning function using a fixed tool and a milling function using a rotary tool as functions of SM processing.

[0044] The processing machine 100 is an NC (Numerically Control) processing machine that automates various operations for workpiece processing through numerical control by a computer.

[0045] In addition, in this specification, the axis parallel to the left - right direction (width direction) of the processing machine 100 and extending in the horizontal direction is called the "Z - axis", the axis parallel to the front - rear direction (depth direction) of the processing machine 100 and extending in the horizontal direction is called the "Y - axis", and the axis extending in the vertical direction is called the "X - axis". The Figure 1 right direction in Figure 1 is called the "+Z - axis direction", and the left direction is called the "-Z - axis direction". The Figure 1 front direction of the paper surface in

[0046] is called the "+Y - axis direction", and the inner direction is called the "-Y - axis direction". The

[0047] upper direction in

[0048] is called the "+X - axis direction", and the lower direction is called the "-X - axis direction". The X - axis, Y - axis, and Z - axis are three mutually orthogonal axes.

[0049] The processing machine 100 further has a machine base 151, a first workpiece spindle 111, a second workpiece spindle 116, and a tool rest (not shown).

[0048] The machine base 151 is a base member for supporting the first workpiece spindle 111, the second workpiece spindle 116, the tool rest, etc., and is provided on the ground of a factory or the like.

[0049] The first workpiece spindle 111 and the second workpiece spindle 116 are arranged opposite to each other in the Z-axis direction. The first workpiece spindle 111 and the second workpiece spindle 116 are configured to hold workpieces. A chuck mechanism (not shown) for detachably holding workpieces is provided on the first workpiece spindle 111 and the second workpiece spindle 116. The first workpiece spindle 111 mainly rotates the held workpiece about a rotation axis 501 parallel to the Z-axis during turning of the workpiece using a fixed tool. The second workpiece spindle 116 mainly rotates the held workpiece about a rotation axis 502 parallel to the Z-axis during turning of the workpiece using a fixed tool.

[0050] The first workpiece spindle 111 is fixed to the machine base 151. The second workpiece spindle 116 is arranged to be movable in the Z-axis direction by various conveying mechanisms, guiding mechanisms, servo motors, etc. The second workpiece spindle 116 may also be a structure fixed to the machine base 151. A tailstock for supporting the rotation center of the workpiece held by the first workpiece spindle 111 may be provided instead of the second workpiece spindle 116.

[0051] A turret (not shown) is provided in the machining area 110. The turret is configured to hold a plurality of fixed tools for removing machining (turning) of workpieces. The turret is supported by the machine base 151 via a bed saddle, etc. not shown. The turret is arranged to be movable in the X-axis direction and the Z-axis direction by various conveying mechanisms, guiding mechanisms, servo motors, etc. provided on the bed saddle, etc. The turret may also have a milling function for rotating a rotary tool.

[0052] The machining machine 100 also has a first longitudinal frame 152, a second longitudinal frame 153, a first transverse frame 154, and a second transverse frame 311 (refer to Figure 3 appearing later).

[0053] The first longitudinal frame 152 and the second longitudinal frame 153 have a column shape with the X-axis direction (vertical direction) as the length direction. The first longitudinal frame 152 and the second longitudinal frame 153 are arranged separately from each other in the Z-axis direction. The lower ends of the first longitudinal frame 152 and the second longitudinal frame 153 are connected to the machine base 151.

[0054] The first transverse frame 154 and the second transverse frame 311 have a beam shape with the Z-axis direction (left - right direction) as the length direction. The first transverse frame 154 and the second transverse frame 311 are made of a pipe with a closed cross-section forming a rectangular shape.

[0055] The first horizontal frame 154 and the second horizontal frame 311 are arranged separately from each other in the Y-axis direction. The first horizontal frame 154 is arranged at a position deviated from the second horizontal frame 311 in the +Y-axis direction. Both end portions of the first horizontal frame 154 in the Z-axis direction are respectively connected to the upper end portions of the first vertical frame 152 and the second vertical frame 153. Both end portions of the second horizontal frame 311 in the Z-axis direction are respectively connected to the upper end portions of the first vertical frame 152 and the second vertical frame 153.

[0056] The first vertical frame 152, the second vertical frame 153, the first horizontal frame 154, and the second horizontal frame 311 form a gantry frame structure on the machine base 151.

[0057] The processing machine 100 further includes a bed saddle 161, a cross slide 162, and a ram 163.

[0058] The bed saddle 161 is supported by the machine base 151. The bed saddle 161 is located on the machine base 151 and is arranged between the first vertical frame 152 and the second vertical frame 153 in the Z-axis direction. The bed saddle 161 has a shape that stands upward from the machine base 151 toward the first horizontal frame 154 and the second horizontal frame 311. The bed saddle 161 is arranged to be movable in the Z-axis direction by using various conveying mechanisms, guiding mechanisms, servo motors, etc. provided on the machine base 151 and the like.

[0059] The cross slide 162 is supported by the bed saddle 161. The cross slide 162 is generally in the shape of a flat plate parallel to the X-axis - Z-axis plane. The cross slide 162 is mounted on the front surface of the bed saddle 161 facing the +Y-axis direction. The cross slide 162 is arranged to be movable in the X-axis direction (vertical direction) by using various conveying mechanisms, guiding mechanisms, servo motors, etc. provided on the bed saddle 161 and the like.

[0060] The ram 163 is supported by the cross slide 162. The ram 163 generally has a cylindrical shape extending along the Y-axis direction. The ram 163 is arranged to penetrate the cross slide 162 in the Y-axis direction and protrude into the machining area 110. The ram 163 is arranged to be movable in the Y-axis direction by using various conveying mechanisms, guiding mechanisms, servo motors, etc. provided on the cross slide 162 and the like.

[0061] The processing machine 100 further includes a tool spindle 121. The tool spindle 121 is arranged in the machining area 110. The tool spindle 121 is configured to be able to hold a rotary tool for removing machining (milling) of a workpiece. A clamping mechanism (not shown) for detachably holding the rotary tool is provided on the tool spindle 121. When milling a workpiece using the rotary tool, the tool spindle 121 rotates the held rotary tool about a rotation axis 503 parallel to the X-axis - Z-axis plane.

[0062] The tool spindle 121 is supported by the ram 163. The tool spindle 121 is connected to the top end portion of the ram 163 in the +Y axis direction. The tool spindle 121 can move three-dimensionally in the processing area 110 by movement of the saddle 161 in the Z axis direction, movement of the cross slide 162 in the X axis direction, and movement of the ram 163 in the Y axis direction.

[0063] The tool spindle 121 is also configured to be rotatable about a rotation axis 504 parallel to the Y axis (B-axis rotation). The rotation range of the tool spindle 121 is preferably a reference posture (in which the spindle end face 122 of the tool spindle 121 faces downward) with respect to the tool spindle 121. Figure 1 and Figure 2 As an example, the rotation range of the tool spindle 121 is a range of ±120° relative to the reference posture.

[0064] The processing machine 100 further includes an automatic tool changer (ATC: Automatic Tool Changer) 141 and a tool magazine 171 .

[0065] The tool magazine 171 stores a plurality of rotary tools T used for milling of a workpiece. The tool magazine 171 is provided outside the processing area 110. The tool magazine 171 is provided on the opposite side of the processing area 110 across the first workpiece spindle 111 (first longitudinal frame 152). The first workpiece spindle 111 (first longitudinal frame 152) is arranged between the tool magazine 171 and the processing area 110 in the Z-axis direction.

[0066] The automatic tool changing device 141 is configured to be able to change tools between the tool spindle 121 in the machining area 110 and the tool magazine 171 outside the machining area 110 .

[0067] The automatic tool changer 141 is supported by the first lateral frame 154. The automatic tool changer 141 is movable in the Z-axis direction by various conveying mechanisms, guide mechanisms, servo motors, and the like provided to the first lateral frame 154 and the like.

[0068] More specifically, the first horizontal frame 154 is provided with a rack 156 and a rail 155. The rack 156 and the rail 155 extend in the Z-axis direction. The range in which the rack 156 and the rail 155 extend in the Z-axis direction includes the range in the Z-axis direction of the processing area 110. The automatic tool changer 141 is provided with a pinion (not shown) engaged with the rack 156. The automatic tool changer 141 is provided with a slide (not shown) that is engaged with the rail 155 and can slide in the Z-axis direction.

[0069] The pinion gear that receives the rotation from the servo motor rotates in the positive or negative direction, so that the automatic tool changer 141 moves in the +Z-axis direction or the -Z-axis direction. The automatic tool changer 141 can move between the inside and the outside of the machining area 110.

[0070] The automatic tool changer 141 can move between the following positions: the standby position ( Figure 1 the position of the automatic tool changer 141 shown in), which is located outside the machining area 110 and above the first workpiece spindle 111, and the automatic tool changer 141 waits at this standby position; the in-machine tool change position, which is located inside the machining area 110 and at any coordinate in the Z-axis direction, and the automatic tool changer 141 changes tools with the tool spindle 121 at this in-machine tool change position; and the tool magazine side tool change position, which is located outside the machining area 110 and on the opposite side of the in-machine tool change position across the standby position, and the automatic tool changer 141 changes tools with the tool magazine 171 at this tool magazine side tool change position.

[0071] The automatic tool changer 141 has a lifting arm 143 and a double arm 144. The lifting arm 143 extends in an arm shape with the X-axis direction (vertical direction) as the length direction. The lifting arm 143 can perform a lifting motion in the X-axis direction.

[0072] The double arm 144 extends in an arm shape and has gripping parts at both ends that can grip tools. The double arm 144 can rotate around a rotation axis 505 parallel to the Z-axis, and can slide in the axial direction of the rotation axis 505. At each of the above in-machine tool change position and tool magazine side tool change position, the lifting arm 143 performs a lifting motion, and the double arm 144 performs a rotation and sliding motion, so that the automatic tool changer 141 changes tools.

[0073] The processing machine 100 also has an additional processing head 131. The additional processing head 131 sprays material powder onto the workpiece and irradiates laser, thereby performing additional processing (Directed Energy Deposition). As the material powder, metal powders such as stainless steel, stellite, inconel, or titanium can be used. In addition, the material powder is not limited to metal powders.

[0074] The additional processing head 131 has a head body 132 and a laser tool 133. Laser and material powder are introduced into the head body 132. The laser tool 133 emits laser toward the workpiece and determines the laser irradiation area in the workpiece. The material powder introduced into the additional processing head 131 is sprayed toward the workpiece via a nozzle (not shown).

[0075] The processing machine 100 has a plurality of laser tools 133. The shapes and / or sizes of the irradiation areas of the lasers determined by the plurality of laser tools 133 on the workpiece are different. In the head main body 132, any one of the plurality of laser tools 133 is selectively installed according to the conditions of the additional processing to be performed.

[0076] The additional processing head 131 also has a disk portion 136. The disk portion 136 has a disk shape with the Y-axis direction as the thickness direction. The disk portion 136 is connected to the head main body 132. The disk portion 136 is provided at a position bent at a right angle from the front end portion in the +Y-axis direction of the head main body 132. The tool spindle 121 has a front surface portion 124 and a side surface portion 123. The front surface portion 124 faces the +Y-axis direction. The side surface portion 123 faces the +Z-axis direction in the reference posture of the tool spindle 121.

[0077] The additional processing head 131 is detachably provided with respect to the tool spindle 121. The additional processing head 131 is mounted on the tool spindle 121 such that the head main body 132 faces the side surface portion 123 and the disk portion 136 faces the front surface portion 124.

[0078] A clamping mechanism using elastic force or the like is built into the additional processing head 131 (disk portion 136) and the tool spindle 121 (front surface portion 124). When the additional processing head 131 is mounted on the tool spindle 121, the clamping mechanism operates, so that the additional processing head 131 is connected to the tool spindle 121. The additional processing head 131 is connected to the tool spindle 121, so that it can move integrally with the tool spindle 121 in the X-axis direction, Y-axis direction, and Z-axis direction. In addition, the structure of the clamping mechanism that connects the tool spindle 121 and the additional processing head 131 will be described in detail later.

[0079] Figure 3 and Figure 4 is a perspective view showing Figure 1 the structure for supplying laser and material powder to the additional processing head.

[0080] Referring to Figures 1 to 4 , the processing machine 100 also has a material powder supply device 341, a laser oscillation device 342, and a pipeline body 210.

[0081] The material powder supply device 341 and the laser oscillation device 342 are provided outside the processing area 110. The material powder supply device 341 sends out the material powder used for additional processing toward the additional processing head 131. The laser oscillation device 342 oscillates the laser used for additional processing.

[0082] The pipeline body 210 supplies the material powder from the material powder supply device 341 to the additional processing head 131, and supplies the laser from the laser oscillation device 342 to the additional processing head 131. The pipeline body 210 extends from the additional processing head 131. The pipeline body 210 is led out from the inside of the processing area 110 to the outside and is connected to the material powder supply device 341 and the laser oscillation device 342.

[0083] The pipeline body 210 has flexibility and can be bent and deformed when subjected to an external force. The pipeline body 210 includes: an optical fiber for guiding the laser; a pipe for guiding the material powder; an air pipe that serves as a flow path for air; a gas pipe that serves as a flow path for an inert gas; a cooling pipe that serves as a flow path for a refrigerant; electrical wiring; and a flexible pipe 211 that houses these.

[0084] Refer to Figure 3 and Figure 4 , the protective plate 181 has a sliding cover 351.

[0085] The sliding cover 351 has a flat plate shape parallel to the X-axis - Z-axis plane as a whole. The sliding cover 351 is disposed inside the processing area 110 (the end portion in the -Y-axis direction of the processing area 110). The ram 163 penetrates the sliding cover 351 from outside the processing area 110 in the Y-axis direction and enters the processing area 110. The sliding cover 351 can slide and deform in response to the movement of the ram 163 in the X-axis direction and the Z-axis direction.

[0086] A pipeline body insertion hole 352 is provided in the sliding cover 351. The pipeline body insertion hole 352 is formed by a through hole that penetrates the sliding cover 351 in the Y-axis direction. The pipeline body 210 (flexible pipe 211) is inserted into the pipeline body insertion hole 352 from inside the processing area 110 and is thus led out to the outside of the processing area 110.

[0087] The processing machine 100 further has a pipeline body support portion 221. The pipeline body support portion 221 is provided outside the processing area 110. The pipeline body support portion 221 supports the pipeline body 210 led out from inside the processing area 110 outside the processing area 110. The pipeline body support portion 221 is provided at a position above the additional processing head 131. The pipeline body support portion 221 is supported by the first horizontal frame 154 and the second horizontal frame 311.

[0088] The pipeline body support portion 221 has a base 331, a pulley portion 332, and a helical spring (elastic member) 333.

[0089] The base 331 is provided on the first horizontal frame 154 and the second horizontal frame 311. The base 331 is disposed so as to straddle between the first horizontal frame 154 and the second horizontal frame 311 in a top view. The pipeline body 210 led out from the inside of the processing area 110 to the outside is arranged on the base 331. The pipeline body 210 arranged on the base 331 extends toward the material powder supply device 341 and the laser oscillation device 342 after passing through a CableBear (registered trademark) which can slide in the Z-axis direction (not shown).

[0090] The pulley portion 332 is supported by the base 331. The pulley portion 332 is arranged to be rotatable about a rotation axis 526 parallel to the X-axis direction (vertical direction), and can slide in the Y-axis direction.

[0091] One end of the coil spring 333 is connected to the pulley portion 332. The other end of the coil spring 333 is connected to the base 331 by means of a bracket 334. The coil spring 333 applies an elastic force in the -Y-axis direction to the pulley portion 332. The coil spring 333 applies an elastic force to the pulley portion 332 in a direction away from the processing area 110 in a top view.

[0092] The flexible tube 211 is composed of a flexible tube. The flexible tube 211 extends between the inside and the outside of the processing area 110. One end 211p of the flexible tube 211 is arranged inside the processing area 110. The other end 211q of the flexible tube 211 is arranged outside the processing area 110.

[0093] The flexible tube 211 led out from the inside of the processing area 110 to the outside extends in the -Y-axis direction on the base 331. The flexible tube 211 is wound around the pulley portion 332 and is turned over by 180° and extends in the +Y-axis direction. The other end 211q of the flexible tube 211 is fixed to the base 331 at the tip of the flexible tube 211 extending in the +Y-axis direction.

[0094] The pulley portion 332 and the coil spring 333 constitute a tension applying mechanism 335. The tension applying mechanism 335 applies a tension to the pipeline body 210 (flexible tube 211) in a direction away from the additional processing head 131 in the processing area 110. The tension applying mechanism 335 applies a pulling force to the pipeline body 210 (flexible tube 211) from the inside of the processing area 110 toward the outside.

[0095] According to such a structure, the flexure of the pipeline body 210 in the processing area 110 can be suppressed. In addition, the pulley portion 332 slides in the Y-axis direction, so that the length of the pipeline body 210 in the processing area 111 can be automatically adjusted according to the position of the additional processing head 131.

[0096] In addition, the elastic member constituting the tension imparting mechanism 335 is not particularly limited. For example, a gas spring may be used instead of the coil spring 333.

[0097] The processing machine 100 further includes a first guiding mechanism 370 and a second guiding mechanism 360. The first guiding mechanism 370 and the second guiding mechanism 360 guide the pipeline body support portion 221 along the Z-axis direction. The first guiding mechanism 370 and the second guiding mechanism 360 are arranged to be separated from each other in the Y-axis direction.

[0098] The pipeline body support portion 221 further includes a block 336. The block 336 is fixed to the base 331. The block 336 faces the first cross-frame 154 in the Y-axis direction.

[0099] The first guiding mechanism 370 includes a rail 155 and a slider 372. The first guiding mechanism 370 has two sets of rails 155 and sliders 372. The rail 155 is mounted on the first cross-frame 154. The rail 155 extends in the Z-axis direction. The slider 372 is mounted on the block 336. The slider 372 engages with the rail 155 by means of a plurality of balls (not shown). The slider 372 and the rail 155 together constitute a linear guiding mechanism in the Z-axis direction.

[0100] The second guiding mechanism 360 is provided at a position separated from the first guiding mechanism 370 in the -Y-axis direction. The second guiding mechanism 360 includes a rail 312. The rail 312 is mounted on the second cross-frame 311. The rail 312 extends in the Z-axis direction. Mounted on the pipeline body support portion 221 (base 331) are: a pair of first rollers that clamp the rail 312 from both sides in the Y-axis direction and can rotate about a rotation axis parallel to the X-axis; and a pair of second rollers that clamp the rail 312 from both sides in the X-axis direction and can rotate about a rotation axis parallel to the Y-axis.

[0101] The processing machine 100 further includes a first guiding member 320. The first guiding member 320 guides the pipeline body 210 (flexible pipe 211) between the additional processing head 131 and the pipeline body support portion 221. The first guiding member 320 is connected to the additional processing head 131 in a manner that it can rotate about a first rotation axis 522 parallel to the Z-axis. The first guiding member 320 is connected to the pipeline body support portion 221 in a manner that it can rotate about a second rotation axis 521 parallel to the Z-axis.

[0102] The first guiding member 320 extends obliquely downward (+Y-axis direction and -X-axis direction) from the pipeline body supporting portion 221 toward the second guiding member 325 described later. The first guiding member 320 is connected to the second guiding member 325 at the first rotation axis 522 and is connected to the base 331 at the second rotation axis 521. The first guiding member 320 rotates about the first rotation axis 522 and the second rotation axis 521, so that the inclination of the first guiding member 320 changes.

[0103] The first guiding member 320 has a linear guiding portion 321 and a plurality of covers 323.

[0104] The linear guiding portion 321 extends linearly between the first rotation axis 522 and the second rotation axis 521. The linear guiding portion 321 is arranged to support the pipeline body 210 (flexible pipe 211) released from the pipeline body supporting portion 221 toward the second guiding member 325 from below. The linear guiding portion 321 is provided with a telescopic mechanism that expands and contracts in a manner that changes the distance between the first rotation axis 522 and the second rotation axis 521. The linear guiding portion 321 has a multi-stage structure of a plurality of linear guiding members that are telescopically combined in the direction from the first rotation axis 522 toward the second rotation axis 521.

[0105] The plurality of covers 323 are mounted on the linear guiding portion 321. The plurality of covers 323 are arranged at intervals in the direction from the first rotation axis 522 toward the second rotation axis 521. The cover 323 is arranged to cover the outer periphery of the flexible pipe 211 supported by the linear guiding portion 321. The flexible pipe 211 is supported by the first guiding member 320 so as to be slidable along the guiding direction (the direction connecting the first rotation axis 522 and the second rotation axis 521) guided by the first guiding member 320.

[0106] According to such a structure, when the additional processing head 131 moves in the Y-axis - X-axis plane, the first guiding member 320 rotates about the first rotation axis 522 and the second rotation axis 521, and the linear guiding portion 321 expands and contracts. As a result, the laying path of the pipeline body 210 (flexible pipe 211) between the second guiding member 325 and the pipeline body supporting portion 221 changes smoothly corresponding to the movement of the additional processing head 131. Therefore, the pipeline body 210 (flexible pipe 211) can be smoothly led out without applying excessive load.

[0107] The processing machine 100 further has a second guiding member 325. The second guiding member 325 is arranged between the additional processing head 131 and the first guiding member 320 on the path of laying the pipeline body 210. The second guiding member 325 guides the pipeline body 210 extending from the additional processing head 131 along the circumferential direction of the rotation axis 504.

[0108] The second guide member 325 rotates relative to the tool spindle 121 about the rotation axis 504 in such a manner as to maintain the circumferential posture of the rotation axis 504 of the second guide member 325 during the rotation of the tool spindle 121.

[0109] The disk portion 136 is disposed between the second guide member 325 and the tool spindle 121 in the Y-axis direction (the axial direction of the rotation axis 504). The second guide member 325 is supported by the disk portion 136 in the additional processing head 131. The second guide member 325 can rotate relative to the disk portion 136 about the rotation axis 504.

[0110] The second guide member 325 has an outer peripheral wall 326. The outer peripheral wall 326 has a wall shape extending along the circumferential direction of the rotation axis 504.

[0111] An inner peripheral wall 327 is connected to the disk portion 136. The inner peripheral wall 327 projects from the disk portion 136 in the +Y-axis direction and has a wall shape extending along the circumferential direction of the rotation axis 504. The inner peripheral wall 327 is disposed on the inner peripheral side of the outer peripheral wall 326. A space extending in the circumferential direction of the rotation axis 504 is provided between the inner peripheral wall 327 and the outer peripheral wall 326, and a pipeline body 210 (flexible tube 211) is disposed in this space.

[0112] During the rotation of the tool spindle 121, the inner peripheral wall 327 rotates about the rotation axis 504 together with the disk portion 136 integral with the tool spindle 121. On the other hand, since the first guide member 320 is connected to the second guide member 325, the second guide member 325 rotates relative to the tool spindle 121 (disk portion 136) about the rotation axis 504 in such a manner as to maintain the circumferential posture of the rotation axis 504 of the second guide member 325.

[0113] At this time, the pipeline body 210 (flexible tube 211) slides in the circumferential direction of the rotation axis 504 in the space between the inner peripheral wall 327 and the outer peripheral wall 326, thereby maintaining the relative positional relationship between the end 211p of the flexible tube 211 and the head main body 132. Thereby, the laying path of the pipeline body 210 about the rotation axis 504 is ensured, and thus, it is possible to suppress excessive load from being applied to the pipeline body 210 as the B-axis of the tool spindle 121 rotates.

[0114] Refer to Figure 4 and the processing machine 100 further includes a connection mechanism 380. The connection mechanism 380 includes a cylinder 382 and a block 381.

[0115] The block 381 is mounted on the bed saddle 161. A pin insertion hole (not shown) is provided in the block 381. The cylinder 382 is mounted on the pipeline body support portion 221. The cylinder 382 has a pin (not shown) that can move forward and backward in the Y-axis direction. The pin of the cylinder 382 is inserted into the pin insertion hole provided in the block 381, thereby obtaining a state in which the tool spindle 121 and the pipeline body support portion 221 are connected. The pin of the cylinder 382 is pulled out from the pin insertion hole provided in the block 381, thereby obtaining a state in which the connection between the tool spindle 121 and the pipeline body support portion 221 is released.

[0116] During the additional machining of the workpiece, the connection mechanism 380 is used to connect the tool spindle 121 and the pipeline body support portion 221, so that the pipeline body support portion 221 can move integrally with the tool spindle 121 and the additional machining head 131 in the Z-axis direction. In addition, during the removal machining of the workpiece, the connection between the tool spindle 121 and the pipeline body support portion 221 performed by the connection mechanism 380 is released, so that the pipeline body support portion 221 and the additional machining head 131 can be separated from the tool spindle 121, and the tool spindle 121 can move alone.

[0117] The pipeline body support portion 221 is also configured to be movable in the Z-axis direction in a separate state from the tool spindle 121 (self-moving mechanism).

[0118] More specifically, a rack 156 is provided on the first horizontal frame 154. The rack 156 extends in the Z-axis direction. The pipeline body support portion 221 is provided with: a servo motor 222 (not shown in Figure 3 and Figure 4 , refer to Figure 1 ); and a pinion gear (not shown), which is connected to the output shaft of the servo motor 222 and engages with the rack 156. In a state where the connection between the tool spindle 121 and the pipeline body support portion 221 performed by the connection mechanism 380 is released, the pinion gear that receives the rotation from the servo motor 222 rotates in the positive or negative direction, so that the pipeline body support portion 221 moves in the +Z-axis direction or the -Z-axis direction.

[0119] Figures 5 to 7 Schematically shows Figure 1 The front view of the machining process of the workpiece in the machining machine in

[0120] Refer to Figures 5 to 7 , the machining machine 100 also has a laser tool storage portion 191 and a head storage portion 192. The laser tool storage portion 191 is configured to be able to store a plurality of laser tools 133. The head storage portion 192 is configured to be able to store the additional machining head 131 separated from the tool spindle 121 during the removal machining of the workpiece.

[0121] The laser tool storage unit 191 and the head storage unit 192 are provided outside the machining area 110. The laser tool storage unit 191 is provided in the X-axis direction (vertical direction) between the standby positions of the first workpiece spindle 111 and the automatic tool changer 141. The head storage unit 192 is provided above the second workpiece spindle 116.

[0122] As Figure 5 shown, during the additional machining of the workpiece W, the additional machining head 131 is connected to the tool spindle 121. The tool spindle 121 moves in the X-axis direction, Y-axis direction, and Z-axis direction, so that the additional machining head 131 also moves integrally with the tool spindle 121 within the machining area 110. Thus, the machining position of the additional machining performed by the additional machining head 131 is displaced three-dimensionally. Moreover, the tool spindle 121 rotates about the rotation axis 504, so that the additional machining head 131 also rotates about the rotation axis 504 integrally with the tool spindle 121. Thus, the orientation of the additional machining performed by the additional machining head 131 (the irradiation direction of the laser relative to the workpiece) can be freely changed.

[0123] The additional machining head 131 moves in the Z-axis direction to a position opposite to the laser tool storage unit 191, so that the laser tool 133 mounted on the additional machining head 131 can be replaced with another laser tool 133 stored in the laser tool storage unit 191.

[0124] As Figure 6 shown, in the case of performing the removal machining of the workpiece W following the additional machining of the workpiece W, the connection between the tool spindle 121 and the additional machining head 131 is released, and the connection of the pipeline body support portion 221 to the bed saddle 161 is released. The additional machining head 131 integrated with the pipeline body support portion 221 is moved from the machining area 110 to the head storage unit 192 outside the machining area 110 by using the self-moving mechanism provided in the pipeline body support portion 221.

[0125] On the other hand, the tool spindle 121 separated from the additional machining head 131 rotates 90° about the rotation axis 504 from the reference posture. The automatic tool changer 141 is moved from the standby position to the in-machine tool change position within the machining area 110. The tool Ta held by the automatic tool changer 141 is mounted on the tool spindle 121 by using the automatic tool changer 141. The automatic tool changer 141 is moved from the in-machine tool change position to the standby position, so that the mounting of the tool relative to the tool spindle 121 is completed.

[0126] In addition, the in-machine tool change position is appropriately set such that the movement amount of the tool spindle 121 from the position of the tool spindle 121 at the start of tool change to the in-machine tool change position is shortened. The in-machine tool change position set in this way can be selected from any coordinate in the Z-axis direction or from among multiple coordinate candidates in the Z-axis direction.

[0127] As Figure 7 shown, during the removal machining of the workpiece W, with the additional machining head 131 housed in the head housing portion 192, the workpiece is milled using the tool Ta held by the tool spindle 121.

[0128] During this period, the automatic tool changer 141 is moved from the standby position to the tool magazine side tool change position, and at the tool magazine side tool change position, the tool Tb housed in the tool magazine 171 is moved to the automatic tool changer 141. The automatic tool changer 141 holding the tool Tb is moved from the tool magazine side tool change position to the standby position, thereby preparing for the next tool change in the tool spindle 121.

[0129] Next, the clamping device in the present embodiment will be described in detail. The clamping device in the present embodiment is applicable to the connection between the tool spindle 121 and the additional machining head 131.

[0130] Figure 8 is a perspective view showing the tool spindle and the additional machining head when not connected. In Figure 8 for the additional machining head 131 in Figure 2 the illustration of the first guide member 320 and the second guide member 325 is omitted. Figure 9 is a perspective view showing the tool spindle within the range surrounded by the chain double-dashed line IX in Figure 8 . Figure 10 is a perspective view showing the additional machining head within the range surrounded by the chain double-dashed line X in Figure 8 .

[0131] Figure 11 is a perspective view showing the tool spindle and the additional machining head when connected. In Figure 11 a part of the tool spindle 121 and the additional machining head 131 is shown by a cross-section cut by the X-Y plane. Figure 12 is a cross-sectional view showing the tool spindle and the additional machining head (clamping mechanism portion) within the range surrounded by the chain double-dashed line XII in Figure 11 . Figure 13 is a cross-sectional view showing the state where the tool spindle and the additional machining head are separated in Figure 12 . Figure 14 is a perspective view showing the tool spindle and the additional machining head within the range surrounded by the chain double-dashed line XIV in Figure 11 .

[0132] Reference Figures 8 to 14 , the clamping device in this embodiment includes a tool spindle 121, an additional machining head 131, and a clamping mechanism portion 871 (refer to Figure 12 and Figure 13 ).

[0133] As Figure 8 and Figure 9 shown, the tool spindle 121 has a convex portion 811. The convex portion 811 is provided on the front surface portion 124. The convex portion 811 has a convex shape protruding in the +Y axis direction in the front surface portion 124. The convex portion 811 has a convex shape protruding in the axial direction of the rotation axis 504 (refer to Figure 3 and Figure 4 ) of the tool spindle 121.

[0134] The entire convex portion 811 has a cylindrical shape centered on the central axis 910 parallel to the Y axis. A plurality of balls 874 are provided on the convex portion 811. The balls 874 are arranged at intervals in the circumferential direction of the central axis 910. The balls 874 are provided so as to be able to move forward and backward in the radial direction of the central axis 910.

[0135] The tool spindle 121 has a plurality of convex portions 811 (811A, 811B). The convex portion 811A and the convex portion 811B are arranged so as to be separated from each other in the X-Z plane.

[0136] As Figure 8 and Figure 10 shown, the additional machining head 131 (disk portion 136) has a relative plate 831. The relative plate 831 has a plate shape parallel to the X-Z plane. The relative plate 831 is disposed opposite to the front surface portion 124 of the tool spindle 121 in a state where the additional machining head 131 is connected to the tool spindle 121.

[0137] A concave portion 841 is provided in the additional machining head 131 (disk portion 136). The concave portion 841 is recessed with respect to the surface of the relative plate 831 on the side opposite to the front surface portion 124. The concave portion 841 is formed by a through hole penetrating the relative plate 831 in the Y axis direction. The concave portion 841 may also be formed by a bottomed hole. The concave portion 841 has a concave shape capable of accommodating the convex portion 811. The entire concave portion 841 has an opening in a cylindrical shape centered on the central axis 915 parallel to the Y axis direction.

[0138] A plurality of concave portions 841 (841A, 841B) are provided in the additional machining head 131. The concave portion 841A and the concave portion 841B are arranged so as to be separated from each other in the X-Z plane. The distance between the concave portion 841A and the concave portion 841B is equal to the distance between the convex portion 811A and the convex portion 811B.

[0139] As Figure 8 and Figure 12 shown, with the additional processing head 131 connected to the tool spindle 121, the convex portion 811 is inserted into the concave portion 841. The convex portions 811A and 811B are respectively inserted into the concave portions 841A and 841B. The insertion direction of the convex portion 811 relative to the concave portion 841 is the Y-axis direction. With the additional processing head 131 connected to the tool spindle 121, the central axis 910 of the convex portion 811 coincides with the central axis 915 of the concave portion 841.

[0140] As Figure 12 and Figure 13 shown, the clamping mechanism portion 871 is configured to clamp the concave portion 841 (841A, 841B) and the convex portion 811 (811A, 811B) inserted into the concave portion 841 (841A, 841B) to each other.

[0141] The clamping mechanism portion 871 includes a piston 875, a housing 872, a disc spring 876, and a plurality of balls 874. The piston 875, the housing 872, the disc spring 876, and the plurality of balls 874 are provided on the tool spindle 121.

[0142] The piston 875 has a shaft shape extending around the central axis 910. The piston 875 can slide in the axial direction of the central axis 910. The housing 872 has a cylindrical shape around the central axis 910 and is fitted on the outer periphery of the piston 875. The housing 872 has a convex shape forming the convex portion 811.

[0143] A plurality of ball insertion holes 873 are provided in the housing 872. The plurality of ball insertion holes 873 are arranged at intervals in the circumferential direction of the central axis 910. A plurality of balls 874 are respectively arranged in the plurality of ball insertion holes 873. A pit portion 878 is provided in the piston 875. The pit portion 878 has a shape recessed from the outer peripheral surface of the piston 875 toward the inner side in the radial direction of the central axis 910. The pit portion 878 is provided at a position opposite to the ball insertion hole 873 in the radial direction of the central axis 910.

[0144] The disc spring 876 is arranged between the piston 875 and the housing 872 in the axial direction of the central axis 910. The disc spring 876 imparts an elastic force in the +Y-axis direction to the housing 872. A hydraulic chamber 877 is provided at a position adjacent to the piston 875 in the -Y-axis direction.

[0145] The clamping mechanism portion 871 further includes a protrusion portion 879. The protrusion portion 879 is provided on the additional processing head 131 (disc portion 136). The protrusion portion 879 has a protrusion shape protruding toward the inner side in the radial direction of the central axis 915 in the concave portion 841.

[0146] As Figure 13As shown, by supplying hydraulic pressure to the hydraulic chamber 877, the piston 875 slides and moves in the +Y-axis direction while overcoming the elastic force of the disc spring 876. At this time, the position of the recessed portion 878 coincides with the position of the ball insertion hole 873 in the axial direction of the central axis 910, so that the ball 874 falls into the recessed portion 878. Thereby, the ball 874 retracts toward the inner side in the radial direction of the central axis 910, and a state where the convex portion 811 can be inserted into and removed from the concave portion 841 is obtained.

[0147] As Figure 12 shown, if the supply of hydraulic pressure to the hydraulic chamber 877 is stopped in a state where the convex portion 811 is inserted into the concave portion 841, the piston 875 slides and moves in the -Y-axis direction under the action of the elastic force of the disc spring 876. At this time, the position of the recessed portion 878 deviates from the position of the ball insertion hole 873 in the axial direction of the central axis 910, so that the ball 874 is pressed by the wall surface of the recessed portion 878. Thereby, the ball 874 is pushed out toward the outer side in the radial direction of the central axis 910, and the protrusion 879 is locked by the ball 874. As a result, a state where the concave portion 841 and the convex portion 811 inserted into the concave portion 841 are clamped to each other is obtained.

[0148] In addition, the structure of the clamping mechanism portion is not particularly limited as long as it can clamp the concave portion and the convex portion inserted into the concave portion to each other.

[0149] As Figure 8 、 Figure 10 and Figure 14 shown, the additional processing head 131 further includes a pin member 861, a guide block 862, a connecting plate 853, a connecting pin 854, and a cylinder 852.

[0150] The pin member 861 is disposed on the opposite side of the tool spindle 121 across the opposing plate 831 in the Y-axis direction. The pin member 861 has a pin shape extending around the central axis 920. The central axis 920 extends in a direction intersecting the insertion direction (Y-axis direction) of the convex portion 811 with respect to the concave portion 841. The central axis 920 extends in a direction orthogonal to the insertion direction (Y-axis direction) of the convex portion 811 with respect to the concave portion 841. The central axis 920 extends in the Figure 10 and Figure 14 X-axis direction in the reference posture of the tool spindle 121 shown in

[0151] The guide block 862 is mounted on the opposing plate 831. A guide hole 863 is provided in the guide block 862. The guide hole 863 is formed by a through hole penetrating the guide block 862. The guide hole 863 is in the Figure 10 and Figure 14In the reference posture of the tool spindle 121 shown in the figure, it penetrates the guide block 862 in the X-axis direction. A pin member 861 penetrates through the guide hole 863. The guide block 862 is supported so as to be slidable on the pin member 861 along the axial direction of the central axis 920.

[0152] The air cylinder 852 has a piston rod 856. The piston rod 856 is provided at a position deviated in the axial direction of the central axis 920 and in the direction (Y-axis direction) orthogonal to the central axis 920 with respect to the central axis 920 extended by the pin member 861. By supplying air to the air cylinder 852, the piston rod 856 can advance and retreat in the axial direction of the central axis 920 (in the X-axis direction in the reference posture of the tool spindle 121).

[0153] The connecting pin 854 has a pin shape extending in the axial direction of the central axis 920. The connecting pin 854 is connected to the pin member 861. The connecting plate 853 has a plate shape extending in the direction (Y-axis direction) orthogonal to the central axis 920, and is connected to the connecting pin 854 and the piston rod 856 at both ends thereof respectively.

[0154] The piston rod 856 is connected to the pin member 861 via the connecting plate 853 and the connecting pin 854. As the piston rod 856 in the air cylinder 852 advances and retreats, the pin member 861 can advance and retreat in the axial direction of the central axis 920. The pin member 861 can advance and retreat in the X-axis direction in the reference posture of the tool spindle 121 shown in Figure 10 and Figure 14 .

[0155] As shown in Figure 10 , the additional processing head 131 (guide block 862) has a first pair of plane surfaces 866. The first pair of plane surfaces 866 extends along the insertion direction (Y-axis direction) of the convex portion 811 into the concave portion 841. The first pair of plane surfaces 866 is parallel to the Y-Z plane in the reference posture of the tool spindle 121 shown in Figure 10 . The guide hole 863 opens on the first pair of plane surfaces 866.

[0156] The pin member 861 can advance and retreat between a first state (the state represented by the pin member 861j in Figure 10 ) disposed inside the first pair of plane surfaces 866 and a second state (the state represented by the pin member 861k in Figure 10 ) protruding from the first pair of plane surfaces 866.

[0157] An opening 832 is provided in the opposing plate 831. The opening 832 is formed by a through-hole penetrating the opposing plate 831 in the Y-axis direction. In the second state (the state represented by the pin member 861k in Figure 10 ), the pin member 861 faces the opening surface formed by the opening 832 in the Y-axis direction. In the first state ( Figure 10In the state represented by the pin member 861j, the pin member 861 retracts in the Y-axis direction relative to the position opposite to the opening surface formed by the opening 832.

[0158] In addition, the actuator for moving the pin member 861 forward and backward is not limited to the above-described cylinder 852. For example, it may be a hydraulic cylinder or an electric actuator.

[0159] As Figure 8 , Figure 9 , Figure 11 and Figure 14 shown, the tool spindle 121 also has a block 821. The block 821 is mounted on the front surface portion 124. The block 821 has a convex shape that protrudes in the +Y-axis direction in the front surface portion 124. The protruding height of the block 821 in the Y-axis direction is greater than the protruding height of the convex portion 811 in the Y-axis direction. The protruding height of the block 821 in the Y-axis direction may also be less than or equal to the protruding height of the convex portion 811 in the Y-axis direction.

[0160] In a state where the additional machining head 131 is connected to the tool spindle 121, the block 821 is inserted into the opening 832. The insertion direction of the block 821 with respect to the opening 832 is parallel to the insertion direction of the convex portion 811 with respect to the concave portion 841. The insertion direction of the block 821 with respect to the opening 832 is the Y-axis direction.

[0161] A pin insertion hole 823 is provided in the tool spindle 121 (block 821). The pin insertion hole 823 has a hole shape that can accommodate the pin member 861. The pin insertion hole 823 has a hole shape that extends around the central axis 925. The central axis 925 extends in the X-axis direction in the reference posture of the tool spindle 121 shown in Figure 8 and Figure 9 .

[0162] The tool spindle 121 (block 821) has a second pair of mating surfaces 822. The second pair of mating surfaces 822 extends along the insertion direction (Y-axis direction) of the convex portion 811 with respect to the concave portion 841. The second pair of mating surfaces 822 is parallel to the Y-Z plane in the reference posture of the tool spindle 121 shown in Figure 9 . The second pair of mating surfaces 822 is parallel to the first pair of mating surfaces 866. The pin insertion hole 823 opens on the second pair of mating surfaces 822.

[0163] As Figure 11 and Figure 14As shown, with the additional processing head 131 connected to the tool spindle 121, the pin member 861 is inserted into the pin insertion hole 823. The insertion direction of the pin member 861 relative to the pin insertion hole 823 is a direction that intersects the insertion direction (Y-axis direction) of the convex portion 811 relative to the concave portion 841. The insertion direction of the pin member 861 relative to the pin insertion hole 823 is not parallel to the insertion direction (Y-axis direction) of the convex portion 811 relative to the concave portion 841. The insertion direction of the pin member 861 relative to the pin insertion hole 823 is a direction orthogonal to the insertion direction (Y-axis direction) of the convex portion 811 relative to the concave portion 841. With the additional processing head 131 connected to the tool spindle 121, the central axis 920 of the pin member 861 coincides with the central axis 925 of the pin insertion hole 823.

[0164] Figures 15 to 17 It is a cross-sectional view showing the connection operation of the tool spindle and the additional processing head.

[0165] Refer to Figure 8 and Figure 15 When installing the additional processing head 131 relative to the tool spindle 121, first, by moving the tool spindle 121 in the X-axis, Y-axis, and Z-axis directions and moving the additional processing head 131 in the Z-axis direction, the front surface portion 124 of the tool spindle 121 and the disk portion 136 of the additional processing head 131 are relatively arranged in the Y-axis direction. The tool spindle 121 is set to the reference posture.

[0166] The tool spindle 121 is moved in the +Y-axis direction, so that the tool spindle 121 approaches and moves toward the additional processing head 131. Thereby, the convex portions 811 (811A, 811B) are inserted into the concave portions 841 (841A, 841B), and at the same time, the block 821 is inserted into the opening 832. At this time, as Figure 13 shown, hydraulic pressure is supplied to the hydraulic chamber 877 in the clamping mechanism portion 871.

[0167] Refer to Figure 12 When the convex portion 811 is inserted into the concave portion 841, the supply of hydraulic pressure to the hydraulic chamber 877 stops. The protrusion 879 is locked by the ball 874, so that the concave portion 841 and the convex portion 811 inserted into the concave portion 841 are clamped to each other.

[0168] Refer to Figure 16, if the block 821 is inserted into the opening 832, the first pair of planes 866 of the guide block 862 and the second pair of planes 822 of the block 821 face each other. The pin member 861 disposed inside the first pair of planes 866 and the pin insertion hole 823 opened in the second pair of planes 822 are opposed to each other in the X-axis direction. In the present embodiment, the first pair of planes 866 and the second pair of planes 822 extend along the insertion direction (Y-axis direction) of the convex portion 811 with respect to the concave portion 841. Therefore, it is possible to prevent the first pair of planes 866 and the second pair of planes 822 from interfering with each other as the tool spindle 121 moves in the +Y-axis direction.

[0169] Refer to Figure 14 and Figure 17 , then, due to the forward and backward movement of the piston rod 856 in the cylinder 852, the pin member 861 moves from the first state disposed inside the first pair of planes 866 to the second state protruding with respect to the first pair of planes 866. Thereby, the pin member 861 is inserted into the pin insertion hole 823.

[0170] The insertion direction of the pin member 861 with respect to the pin insertion hole 823 is the X-axis direction orthogonal to the insertion direction (Y-axis direction) of the convex portion 811 with respect to the concave portion 841. Therefore, even when clamping failure occurs in the clamping mechanism portion 871, the pin member 861 inserted into the pin insertion hole 823 can function as an anti-disengagement member. Thereby, it is possible to more reliably prevent the additional processing head 131 from falling off the tool spindle 121.

[0171] Refer to Figure 9 and Figure 10 , the pin insertion hole 823 and the pin member 861 inserted into the pin insertion hole 823 (the pin member 861k in the second state) are disposed on the straight line 960 connecting the convex portion 811A (the first convex portion) and the concave portion 841A (the first concave portion) into which the convex portion 811A is inserted and the convex portion 811B (the second convex portion) and the concave portion 841B (the second concave portion) into which the convex portion 811B is inserted.

[0172] According to such a structure, it is possible to more reliably prevent both the case where the convex portion 811A is disengaged from the concave portion 841A and the case where the convex portion 811B is disengaged from the concave portion 841B by the pin member 861 inserted into the pin insertion hole 823.

[0173] If the structure of the clamping device in the embodiment of the present invention described above is summarized, the clamping device in the present embodiment includes: a tool spindle 121 as a first member, which has convex portions 811 (811A, 811B); an additional processing head 131 as a second member, which is provided with concave portions 841 (841A, 841B) into which the convex portions 811 (811A, 811B) are inserted in a first direction and is detachably connected to the tool spindle 121; and a clamping mechanism portion 871, which clamps the concave portions 841 (841A, 841B) and the convex portions 811 (811A, 811B) inserted into the concave portions 841 (841A, 841B) to each other. The additional processing head 131, which is any one of the tool spindle 121 and the additional processing head 131, has a pin member 861. A pin insertion hole 823 into which the pin member 861 is inserted in a second direction intersecting the first direction is provided in the tool spindle 121, which is the other member of the tool spindle 121 and the additional processing head 131.

[0174] According to such a structure, the pin member 861 inserted into the pin insertion hole 823 functions as an anti-disengagement member, so that even when clamping failure occurs in the clamping mechanism portion 871, the connection between the tool spindle 121 and the additional processing head 131 can be more reliably maintained.

[0175] In addition, in the present embodiment, a structure in which the male convex portion 811 and the pin member 861 are provided on different members, and the female concave portion 841 and the pin insertion hole 823 are provided on different members has been described, but it is not limited thereto, and a combination in which the convex portion and the pin member are provided on the same member, and the concave portion and the pin insertion hole are provided on the same member may also be used. In addition, the clamping device in the present invention can be applied to the connection between a pallet and a table or the connection between a workpiece and a jig in a processing machine (machine tool), and can also be applied to the connection between different members in a technical field other than a processing machine (machine tool).

[0176] It should be considered that the embodiments disclosed this time are illustrative in all respects and not restrictive. The scope of the present invention is represented not by the above description but by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0177] Industrial Applicability

[0178] The present invention is applicable, for example, to the connection structure between different members in a processing machine.

[0179] Description of Reference Numerals

[0180] 100, Processing machine; 110, Processing area; 111, First workpiece spindle; 116, Second workpiece spindle; 121, Tool spindle; 122, Spindle end face; 123, Side face portion; 124, Front surface portion; 131, Additional processing head; 132, Head main body; 133, Laser tool; 136, Disc portion; 141, Automatic tool changer; 143, Lifting arm; 144, Double arm; 151, Machine base; 152, First longitudinal frame; 153, Second longitudinal frame; 154, First transverse frame; 155, 312, Rail; 156, Rack; 161, Saddle; 162, Cross slide; 163, Ram; 171, Tool magazine; 181, Guard plate; 191, Laser tool storage portion; 192, Head storage portion; 210, Pipeline body; 211, Flexible tube; 211p, One end; 211q, The other end; 221, Pipeline body support portion; 222, Servo motor; 311, Second transverse frame; 320, First guiding member; 321, Linear guiding portion; 323, Cover body; 325, Second guiding member; 326, Outer peripheral wall; 327, Inner peripheral wall; 331, Base; 332, Pulley portion; 333, Helical spring; 334, Bracket; 335, Tension imparting mechanism; 336, 381, 821, Block; 341, Material powder supply device; 342, Laser oscillation device; 351, Slide cover; 352, Pipeline body insertion hole; 360, Second guiding mechanism; 370, First guiding mechanism; 372, Sliding member; 380, Linking mechanism; 382, 852, Cylinder; 501, 502, 503, 526, Axis of rotation; 504, 505, Axis of revolution; 521, Second axis of rotation; 522, First axis of rotation; 811, 811A, 811B, Protrusion; 822, Second mating surface; 823, Pin insertion hole; 831, Opposing plate; 832, Opening; 841, 841A, 841B, Recess; 853, Linking plate; 854, Linking pin; 856, Piston rod; 861, 861j, 861k, Pin member; 862, Guide block; 863, Guide hole; 866, First mating surface; 871, Clamping mechanism portion; 872, Outer shell; 873, Ball insertion hole; 874, Ball; 875, Piston; 876, Disc spring; 877, Hydraulic chamber; 878, Concave portion; 879, Protrusion; 910, 915, 920, 925, Central axis; 960, Straight line.

Claims

1. A clamping device, comprising: A first member having a convex portion; A second member provided with a concave portion into which the convex portion is inserted in a first direction and connected to the first member in a detachable manner; and A clamping mechanism portion that clamps the concave portion and the convex portion inserted into the concave portion to each other, Either one of the first member and the second member has a pin member, A pin insertion hole into which the pin member is inserted in a second direction intersecting the first direction is provided in the other one of the first member and the second member, The first member has a first convex portion and a second convex portion as the convex portion, A first concave portion into which the first convex portion is inserted and a second concave portion into which the second convex portion is inserted are provided in the second member as the concave portion, The pin member and the pin insertion hole are arranged on a straight line connecting the first convex portion and the first concave portion and the second convex portion and the second concave portion.

2. The clamping device according to claim 1, wherein, The second direction is orthogonal to the first direction.

3. The clamping device according to claim 1 or 2, wherein, One of the members has a first pair of opposing surfaces extending along the first direction, The other member has a second pair of opposing surfaces extending along the first direction and facing the first pair of opposing surfaces, The pin member is provided so as to be able to advance and retreat between a first state disposed inside the first pair of opposing surfaces and a second state protruding with respect to the first pair of opposing surfaces, The pin insertion hole opens in the second pair of opposing surfaces.

4. The clamping device according to claim 1 or 2, wherein, Either one of the first member and the second member is a tool spindle, The other one of the first member and the second member is an additional processing head mounted in a detachable manner with respect to the tool spindle.

5. A processing machine comprising the clamping device according to claim 1 or 2.

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