Processing machine

Abstract

To provide a processing machine capable of stably drilling and milling by feeding a main shaft in a straight line. [Solution] A processing machine 10 having a robot 11 having a connection surface 11a, an X-guide 29 arranged on the connection surface 11a and extending in an X-direction parallel to the connection surface 11a, an X-slider 31 guided by the X-guide 29 to reciprocate in the X-direction, and a processing unit 40 arranged on the X-slider 31, the processing unit 40 having a Z-slider 45 that reciprocates in a Z-direction perpendicular to the X-direction, and a spindle 59 to which a tool 1 can be attached, the spindle 59 being rotatably arranged on the Z-slider 45 and extending in the Z-direction.

Description

[Technical field]

[0001] The present invention relates to a processing machine. [Background technology]

[0002] The thread machining device disclosed in JP 2009-248279 A (hereinafter referred to as Patent Document 1) comprises a robot with a robot arm at its tip, a lifting mechanism supported via a flange on the tip of the robot arm, a rotation mechanism supported by the lifting mechanism, a support part located at the tip of the rotation mechanism, a tap supported by the support part, a sensor located on the top surface of the robot and detects the inclination of the robot arm, a computing device which calculates information obtained from the sensor, and a control box which operates the lifting mechanism and the rotation mechanism based on information obtained from the computing device.

[0003] In addition, the industrial robot disclosed in Patent Publication No. 5656268 (hereinafter referred to as Patent Document 2) has a first arm, a second arm, a first frame extending in a first direction, a first movable body supported so as to be movable in the extension direction of the first frame, a second frame extending in a second direction perpendicular to the first direction relative to the first movable body, a second movable body supported so as to be movable back and forth in the second direction, and a processing tool arranged on the second movable body and arranged in a direction perpendicular to the first and second directions. Summary of the Invention [Problem to be solved by the invention]

[0004] An articulated robot cannot draw a straight line. Therefore, it may not be possible to perform stable machining. The thread processing device of Patent Document 1 cannot perform mill processing. The processing machine of Patent Document 2 cannot perform drill processing. An object of the present invention is to provide a processing machine capable of feeding a main spindle in a straight line and performing stable drilling and milling. [Means for solving the problem]

[0005] The first aspect of the present invention is a robot having a connection surface; an X guide disposed on the connection surface and extending in an X direction parallel to the connection surface; an X-slider that is guided by the X-guide and reciprocates in the X-direction; A processing unit disposed on the X-slider, a Z slider that reciprocates in a Z direction perpendicular to the X direction; A spindle on which a tool can be attached, the spindle being rotatably disposed on the Z slider and extending in the Z direction; A processing unit having It is a processing machine having the above features.

[0006] The robot may have an arm. The connection surface may be disposed at a tip of the arm. The connection surface may be, for example, a flange. The robot may be, for example, a vertical articulated robot or a parallel link robot. The Y-axis stroke may be less than or equal to half the X-axis stroke.

[0007] The coolant supplying device may be disposed on a base on which the robot is installed or on the first axis of the robot. The coolant may be, for example, compressed air, oil mist, or mist coolant. The nozzle is disposed on the ram or the Z-slider. The nozzle may be connected to the tip of the ram or the Z-slider.

[0008] The processing unit may include a Z cylinder. The Z cylinder extends and retracts along the Z direction. The Z cylinder pushes the ram or the Z slider toward the tip. The Z cylinder is, for example, a fluid cylinder, particularly an air cylinder.

[0009] The processing machine may have an X frame that supports the X guide, and an X drive device that is disposed on the X frame and moves the X slider. The processing unit may have a processing unit body.

[0010] The processing machine may have a Y frame that supports the Y guide. The processing machine may have a Y-axis drive device that is disposed on the Y frame and moves the Y slider. The Y frame may have ribs. The ribs extend in the X and Y directions and connect the Y frame and the X slider. The Y stroke of the Y slider is smaller than the X stroke of the X slider. The Y stroke is preferably 50% or less of the X stroke, and more preferably 30% or less.

[0011] The processing machine may have a W frame that supports a W guide. The processing machine may have a W-axis drive device that is disposed on the W frame and moves a W slider. The W direction is parallel to the Z direction. The W guide extends in the W direction. The W slider reciprocates in the W direction.

[0012] The processing machine may have a first support that supports the X-frame or X-guide during processing. The first support may have a coupling that connects to the X-frame or X-guide, or a mechanical stopper. The processing machine may have a second support that supports the body of the processing unit or the Z-guide during drilling. The first support and the second support are disposed on the floor surface, for example. The first support and the second support may be a robot. Effect of the Invention

[0013] According to the processing machine of the present invention, the spindle is fed in a straight line, and drilling and milling can be performed stably. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view of a processing machine according to a first embodiment; [Diagram 2] Cross-sectional view of the processing machine of the first embodiment [Diagram 3] Cross-sectional view of line III-III in Figure 2 [Figure 4] FIG. 13 is a perspective view of a processing machine according to a second embodiment. [Diagram 5] Cross-sectional view of a processing machine according to a second embodiment [Figure 6] Cross-sectional view of a processing machine according to a third embodiment DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] <Embodiment 1> 1, the processing machine 10 of this embodiment has a robot 11 and an end effector 15. The end effector 15 has an X linear motion unit 20 and a processing unit 40. As also shown in Fig. 3, the processing machine 10 may have a coolant supply device 75, a nozzle 79, a bracket 78, a supply hose (coolant piping) 76, an air source (working fluid source) 84, and a support 87.

[0016] FIG. 2 is a cross-sectional view taken along line II-II in FIG. 3. As shown in FIG. 2, the robot 11 has a connection surface 11a and an arm 11b. The robot 11 is, for example, a vertical articulated robot. The connection surface 11a is disposed at the tip of the arm 11b. Hereinafter, one direction along the connection surface 11a is defined as the X direction. The direction perpendicular to the connection surface 11a is defined as the Y direction, and the direction toward the arm 11b is defined as positive. The direction perpendicular to the X direction and the Y direction is defined as the Z direction, and the upward direction in FIG. 3 is defined as positive. For convenience, the -Y direction is defined as the upward direction. The +Z direction is defined as the base end or rear. The -Z direction is defined as the tip or front.

[0017] As shown in FIGS. 2 and 3, X linear motion unit 20 has an X frame 21, an X guide 29, an X slider 31, an X drive device 22, a fixed cover 33, and a slide cover . The X frame 21 is box-shaped and is disposed on the connection surface 11a. The X frame 21 opens upward. The X frame 21 extends in the X direction.

[0018] X guide 29 has a guide rail 29a and a guide block 29b. Guide rail 29a extends along the X axis and is disposed above X frame 21. Guide block 29b reciprocates in the X direction on guide rail 29a. The X-slider 31 includes a slider 31a and a nut block 31b. The slider 31a is connected to the guide block 29b. The nut block 31b is connected to the lower part of the X-slider 31.

[0019] The X drive unit 22 is, for example, a ball screw and servo motor mechanism. The X drive unit 22 has an X feed screw 23, a bearing 24, a pulley 25, and an X motor 27 (see FIG. 3). The X motor 27 is disposed on the front side of the paper in FIG. 3 and is represented by a two-dot chain line. The X drive unit 22 may have an X cylinder 36. The X feed screw 23 has a screw shaft 23a and a nut 23b. The X feed screw 23 extends in the X direction. The screw shaft 23a is supported by the X frame 21 via the bearing 24. The nut 23b is connected to a nut block 31b. The pulley 25 is connected to the screw shaft 23a. The pulley 25 is connected to the X motor 27 by a belt 26. The X-motor 27 may be directly connected to the screw shaft 23a, or may be connected to the screw shaft 23a via a coupling (not shown).

[0020] The X cylinder 36 is disposed on the X frame 21. The X cylinder 36 is an air cylinder. The X cylinder 36 is a single-acting or double-acting cylinder. The X cylinder 36 has a cylinder body 36a, a piston 36b, and a piston rod 36c. The cylinder body 36a is connected to the X frame 21. The piston 36b reciprocates within the cylinder body 36a. The piston rod 36c connects the piston 36b and the X slider 31. When the X slider 31 moves in the +X direction, the X cylinder 36 urges the X slider 31 in the +X direction. When the X slider 31 moves in the -X direction, the X cylinder 36 urges the X slider 31 in the -X direction.

[0021] The air source (working fluid source) 84 is connected to the X cylinder 36. The air source 84 is, for example, a compressor, a fluid directional valve, a pressure regulating valve, or a combination thereof.

[0022] The fixed cover 33 is fixed to the X frame 21. The fixed cover 33 is box-shaped and covers most of the X drive device 22 and the X guide 29. As shown in FIG. 2, the fixed cover 33 has an opening 33a at the top. The X slider 31 passes through the opening 33a. The slide cover 34 is connected to the X slider 31 and covers the opening 33a. The slide cover 34 cooperates with the fixed cover 33 to cover the X linear motion unit 20. For example, the slide cover 34 slides on the fixed cover 33. A scraper may be disposed between the slide cover 34 and the fixed cover 33.

[0023] 1, the support 87 has a support block 88 and one or more connection parts 89. The support block 88 is fixed to, for example, a floor surface. The support block 88 may be supported by a robot arm other than the arm 11b. The connection part 89 is, for example, a coupler or a mechanical stopper. The connection part 89 is disposed on the support block 88. The connection part 89 is connected to the X frame 21.

[0024] 3, the machining unit 40 includes a body 41, a Z guide 43, a Z slider 45, a ram 47, a main bearing 60, a main shaft 59, a propeller shaft 61, bearings 50, 62, a main shaft driven pulley 63, a main shaft motor 65, a main shaft driving pulley 66, belts 52, 67, a Z feed screw 49, a Z driven pulley 51, a Z motor 53, a Z driving pulley 55, a unit cover 69, and a pulley cover 71. The machining unit 40 may include a Z cylinder 83. The Z motor 53 may be directly connected to the screw shaft 49a. The Z motor 53 is connected to the screw shaft 49a via a coupling (not shown).

[0025] The body 41 is disposed on the X-slider 31. The body 41 has a motor bracket 41c, a bearing bracket 41b, and an opening 41d. The body 41 is box-shaped. The opening 41d is disposed above the body 41. The bearing bracket 41b has a ram guide hole 41a. The body 41 may be formed integrally with the X-slider 31.

[0026] The Z guide 43 has a guide rail 43a and a guide block 43b. The guide rail 43a extends in the Z direction and is disposed on the upper surface of the body 41. The guide block 43b is connected to the lower side of the Z slider 45.

[0027] A base end of the ram 47 is connected to the Z slider 45. The ram 47 extends in the Z direction. The ram 47 has a hollow right cylindrical shape. A tip end of the ram 47 is guided by the ram guide hole 41a. The main shaft 59 is supported by a main bearing 60 inside the ram 47. The main shaft 59 has an escape hole 59a and a spline hole 59b. The escape hole 59a opens at the rear end of the main shaft 59 and extends to the tip end. The spline hole 59b is disposed at the rear end of the escape hole 59a. The tool 1 is attached to the tip end (front end) of the main shaft 59.

[0028] The propeller shaft 61 has a splined shaft 61b. The splined shaft 61b is disposed from the tip to the center of the propeller shaft 61. A base end 61a of the propeller shaft 61 is supported by the motor bracket 41c via a bearing 62. The propeller shaft 61 penetrates the Z slider 45 and is inserted into a relief hole 59a inside the main shaft 59. The splined shaft 61b meshes with the splined hole 59b. A portion of the propeller shaft 61 protrudes from the rear surface of the motor bracket 41c. The main shaft driven pulley 63 is connected to the rear end of the propeller shaft 61 .

[0029] The main shaft motor 65 is disposed on the front surface of the motor bracket 41c. The output shaft 65a of the main shaft motor 65 protrudes from the rear surface of the motor bracket 41c. The main shaft drive pulley 66 is connected to the output shaft 65a. The main shaft drive pulley 66 and the main shaft driven pulley 63 are connected by an endless belt 67.

[0030] The Z feed screw 49 has a screw shaft 49a and a nut 49b. The screw shaft 49a is supported by the bearing bracket 41b and the motor bracket 41c via a bearing 50. The nut 49b is connected to the upper end of the Z slider 45. The rear end of the screw shaft 49a protrudes rearward from the motor bracket 41c. The Z driven pulley 51 is connected to the rear end of the screw shaft 49a.

[0031] The Z motor 53 is disposed on the front surface of the motor bracket 41c. The output shaft 53a of the Z motor 53 protrudes from the rear surface of the motor bracket 41c. The Z driving pulley 55 is connected to the output shaft 53a. The Z driving pulley 55 and the Z driven pulley 51 are connected by an endless belt 52.

[0032] Unit cover 69 is disposed on body 41 and covers opening 41d. Unit cover 69 covers Z guide 43, ram 47, Z slider 45, Z feed screw 49, and bearings 50 and 62. Unit cover 69 may also cover spindle motor 65 and Z motor 53. The pulley cover 71 is disposed on the body 41 and covers the pulleys 63 , 51 , 55 , 66 and the belts 52 , 67 .

[0033] The coolant supplying device 75 supplies, for example, mist coolant or compressed air. The coolant supplying device 75 is disposed in an installation portion (not shown) of the robot 11. The coolant supplying device 75 may be disposed in a first axis of the robot 11, which is an articulated robot. The bracket 78 is disposed on the ram 47. Preferably, the bracket 78 is disposed on the tip portion of the ram 47. The bracket 78 may be disposed on the Z slider 45. The bracket 78 may be omitted. The nozzle 79 is disposed on the bracket 78 or the ram 47. The nozzle 79 sprays coolant toward the tool 1. A supply hose 76 connects the coolant supply device 75 and a nozzle 79 .

[0034] The Z cylinder 83 is disposed in the body 41. The Z cylinder 83 is an air cylinder. The Z cylinder 83 is a single-acting cylinder and biases the Z slider 45 in the -Z direction. The Z cylinder 83 has a cylinder body 83a, a piston 83b, and a piston rod 83c. The cylinder body 83a is connected to the X frame 21. The piston 83b reciprocates within the cylinder body 83a. The piston rod 83c connects the piston 83b and the Z slider 45. The Z cylinder 83 is connected to an air source 84.

[0035] The processing machine 10 may have a support 91 (see FIG. 2). The support 91 is connected to the body 41 and supports the body 41. The support 91 is substantially the same as the support 87.

[0036] A method of using the processing machine 10 will be described. First, the robot 11 positions the X-linear motion unit 20 at a predetermined processing position (not shown). The support 87 may be connected to the X-linear motion unit 20. During processing, the robot 11 holds the X-linear motion unit 20 at the processing position.

[0037] When drilling a hole, the following operations are performed. X-drive device 22 positions X-slider 31 at a predetermined drilling position (not shown). At this time, support 91 may be connected to body 41 and support body 41. Then, spindle motor 65 rotates spindle 59. While holding X-slider 31 at the drilling position, Z-motor 53 sends out ram 47, and retracts ram 47 after it reaches a predetermined depth.

[0038] When milling, the following operations are performed. The X drive unit 22 positions the X slider 31 at a predetermined machining start position (not shown). Then, the spindle motor 65 rotates the spindle 59. Next, the Z motor 53 sends out the ram 47 to a predetermined height. Next, the X drive unit 22 sends the X slider 31 in the X direction, and the tool 1 mills the workpiece. When the X slider 31 reaches the predetermined machining end position, the Z motor 53 retracts the ram 47.

[0039] In the processing machine of Patent Document 2, the processing point is far from the tip of the robot arm, and sufficient rigidity cannot be ensured. In contrast, according to the processing machine 10 of this embodiment, the center of gravity of the end effector 15 can be brought close to the connection surface 11a of the robot 11. Also, the tip of the spindle 59 can be brought close to the connection surface 11a. During processing, cutting resistance and cutting vibration act on the spindle 59. By bringing the tip of the spindle 59 and the connection surface 11a of the robot 11 close to each other, the load on the robot 11 is reduced. Therefore, the rigidity of the entire processing machine 10 is improved.

[0040] When the processing machine 10 has the support 87, the X linear motion unit 20 is supported by the support 87. At this time, the support 87 receives all or part of the cutting resistance and cutting vibration acting on the spindle 59. This reduces the load on the robot 11 during processing. This improves the rigidity of the entire processing machine 10.

[0041] The Z cylinder 83 pushes the Z slider 45 forward. The Z motor 53 receives the cutting resistance when drilling. The Z cylinder 83 reduces the cutting resistance acting on the Z motor 53. Also, when the Z cylinder 83 is a compressible fluid cylinder, the Z cylinder 83 absorbs cutting vibrations. This allows the output torque of the Z motor 53 to be reduced. And the Z motor 53 can be made smaller.

[0042] The X cylinder 36 pushes the X slider 31 to the left and right. The X motor 27 receives cutting resistance during milling. The X cylinder 36 reduces the cutting resistance acting on the X motor 27. Furthermore, when the X cylinder 36 is a compressible fluid cylinder, the X cylinder 36 absorbs cutting vibrations. This allows the output torque of the X motor 27 to be reduced. And the X motor 27 can be made smaller.

[0043] When the Z cylinder 83 and the X cylinder 36 are provided, the mass and inertia of the end effector 15 can be reduced by making the Z motor 53 and the X motor 27 smaller.

[0044] <Embodiment 2> 4 and 5, the processing machine 100 of this embodiment has a robot 11 and an end effector 115. The end effector 115 has an X linear motion unit 20, a Y linear motion unit 120, and a processing unit 40. FIG. 5 is a cross-sectional view of the X linear motion unit 20 and the Y linear motion unit 120 cut along a plane passing through the centers of the X feed screw 23 and the Y feed screw 123.

[0045] Y linear motion unit 120 has a Y frame 121, a Y guide 129, a Y slider 131, a Y drive device 122, a fixed cover 133, and a slide cover 134. Y linear motion unit 120 extends in the Y direction. Y frame 121 is connected to X slider 31. Y frame 121 and X slider 31 may be formed integrally. Y frame 121 may have a rib 121a. Rib 121a extends in the XY direction and connects Y frame 121 and X slider 31.

[0046] Y guide 129 extends in the Y direction, and is disposed on Y frame 121. Y slider 131 is disposed on Y guide 129, and reciprocates in the Y direction. The Y driving device 122 has a Y feed screw 123, a bearing 124, a pulley 125, a Y motor (not shown), and an endless belt 126. The Y driving device 122 may have a Y cylinder (not shown). The Y feed screw 123 is supported by the Y frame 121 via the bearing 124. The Y feed screw 123 is connected to the Y slider 131. The pulley 125 is connected to the Y motor via the endless belt 126. The Y motor drives the Y slider 131 in the Y direction. The Y cylinder is, for example, an air cylinder. The Y cylinder may be a double-acting cylinder. When the Y slider 131 moves in the -Y direction, the Y cylinder urges the Y slider 131 in the -Y direction. When the Y slider 131 moves in the +Y direction, the Y cylinder urges the Y slider 131 in the +Y direction.

[0047] Otherwise, the Y linear motion unit 120 is substantially identical to the X linear motion unit 20. Preferably, the Y stroke 4 of the Y linear motion unit 120 is smaller than the X stroke 3 of the X linear motion unit 20. The Y stroke 4 is preferably 50% or less of the X stroke 3, more preferably 30% or less. The slide cover 134 and the cover of the X linear motion unit 20 can be freely designed to avoid interference. For example, the slide cover 134 may be penetrated between the slide cover 34 and the X-slider 31. The slide cover 34 may have a bent portion 34a. The Y motor (not shown) may be directly connected to the Y feed screw 123. The Y motor (not shown) may be connected to the Y feed screw 123 via a coupling (not shown).

[0048] Processing unit 40 is connected to Y slider 131. Body 41 may be formed integrally with Y slider 131.

[0049] According to the processing machine 100 of this embodiment, the spindle 59 can be moved in the XYZ directions while the position of the arm 11b of the robot 11 is kept unchanged. Therefore, milling of a width wider than the diameter of the tool 1 and milling of an L-shaped surface drawn on the XY plane can be stably performed.

[0050] Since the Y stroke 4 is smaller than the X stroke 3, the processing point and the connection surface 11a can be brought closer to each other. Therefore, the rigidity of the entire processing machine 10 is improved.

[0051] <Embodiment 3>

[0052] As shown in Fig. 6, the processing machine 200 of this embodiment has a robot 11 and an end effector 215. The end effector 215 has an X linear motion unit 20, a W linear motion unit 220, and a processing unit 40. The W direction is parallel to the Z direction. Fig. 6 is a cross-sectional view of the X linear motion unit 20 and the W linear motion unit 220 cut on the YZ plane passing through the W feed screw 223.

[0053] The W linear motion unit 220 has a W frame 221, a W guide 229, a W slider 231, a W drive device 222, a fixed cover 233, and a slide cover 234. The W linear motion unit 220 extends in the W direction. The W frame 221 is connected to the X-slider 31. The W frame 221 extends in the W direction. The W frame 221 and the X-slider 31 may be formed integrally.

[0054] The W guide 229 extends in the W direction and is disposed on the W frame 221. The W guide 229 is, for example, a straight line guide. The W slider 231 is disposed on the W guide 229 and reciprocates in the W direction.

[0055] The W drive device 222 has a W feed screw 223, a bearing 224, a pulley 225, an endless belt 226, and a W motor (not shown). The W drive device 222 may have a W cylinder (not shown). The W feed screw 223 is supported by the W frame 221 via the bearing 224. The W feed screw 223 is connected to the W slider 231. The pulley 225 is connected to the W feed screw 223. The W motor drives the W feed screw 223 via the endless belt 226 and the pulley 225. The W motor may be directly connected to the W feed screw 223. The W motor may be connected to the W feed screw 223 via a coupling (not shown). The W motor drives the W slider 231 in the W direction. The W cylinder is disposed in the W frame 221 and biases the W slider 231 in the -W direction. The W cylinder is, for example, an air cylinder. For example, a W cylinder is a single acting cylinder.

[0056] The fixed cover 233 is disposed on the W frame 221. The slide cover 234 is connected to the W slider 231. The fixed cover 233 and the slide cover 234 cooperate to cover the W guide 229 and the W drive device 222. Otherwise, the W linear motion unit 220 is substantially identical to the X linear motion unit 20 .

[0057] The processing unit 40 is connected to the W slider 231. The body 41 may be formed integrally with the W slider 231. It is also possible to omit the X linear motion unit 20. In this case, the W frame 221 is directly connected to the connection surface 11a.

[0058] In the processing machine 10 of the first embodiment shown in Fig. 3 and the processing machine 100 of the second embodiment shown in Fig. 5, the entire processing unit 40 cannot be moved in the -Z direction with respect to the connection surface 11a of the robot 11. The front end surface of the body 41 of the processing unit 40 and the front end surfaces of the X linear motion unit 20 and the Y linear motion unit 120 are close to each other. Therefore, the amount of protrusion of the ram 47 with respect to the X linear motion unit 20 and the Y linear motion unit 120 is approximate to the Z stroke 6 of the processing unit 40. The front surfaces of the X linear motion unit 20 and the Y linear motion unit 120 extend around the base end of the ram 47.

[0059] In contrast, as shown in FIG. 6, according to the processing machine 200 of this embodiment, the W linear motion unit 220 can protrude the W slider 231 and the processing unit 40 toward the tip direction (-W direction) of the spindle 59. Furthermore, the processing unit 40 can extend the ram 47. Therefore, the ram 47 can protrude relative to the X linear motion unit 20 by the combined amount of the W stroke 5 and the Z stroke 6 (see FIG. 3) of the W linear motion unit 220. The XY cross section of the processing unit 40 is smaller than the XY cross section of the entire end effector 215. For example, the XY cross section of the processing unit 40 is less than half the XY cross section of the entire end effector 215. Furthermore, the cross section of the ram 47 is much smaller than the XY cross section of the processing unit 40. For example, the cross section of the ram 47 is 5 to 10% of the XY cross section of the processing unit 40. Therefore, according to the processing machine 200, the tool 1 can be inserted into a narrow part of the workpiece and processed.

[0060] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the gist of the present invention, and all technical matters included in the technical ideas described in the claims are the subject of the present invention. The above-described embodiment shows a preferred example, but a person skilled in the art can realize various alternatives, modifications, variations, or improvements from the contents disclosed in this specification, and these are included in the technical scope described in the attached claims. [Explanation of symbols]

[0061] 10, 100, 200 processing machines 11. Robot 11a Connection surface 29 X Guide 31 X Slider 40 Processing Unit 45 Z Slider 59 Main shaft

Claims

1. a vertical articulated robot having a connection surface; an X-frame arranged on the connection surface, the X-frame being a box-shaped X-frame having an opening; an X guide disposed on the X frame and extending in an X direction parallel to the connection surface; an X-slider that is guided by the X-guide and reciprocates in the X-direction; an X-driving device that drives the X-slider in the X-direction and is disposed inside the X-frame; A processing unit disposed on the X-slider, a body having a ram guide hole and disposed on the X-slider; a Z slider that reciprocates in a Z direction perpendicular to the X direction; A ram is disposed on the Z slider and guided by the ram guide hole; a spindle on which a tool can be mounted, the spindle being rotatably disposed on the ram and extending in the Z direction; A processing unit having A processing machine having the above structure.

2. a coolant supply device for supplying a coolant; a nozzle that is disposed on the Z slider, reciprocates in the Z direction together with the spindle, and sprays the coolant toward the tool; a coolant pipe connecting the coolant supply device and the nozzle; The processing machine of claim 1 further comprising:

3. The processing unit includes: A Z cylinder, a cylinder body disposed in the body; a piston that reciprocates in the Z direction within the cylinder body and is connected to the Z slider; A Z cylinder having The processing machine according to claim 1 or 2, further comprising:

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