Removal processing machine

Abstract

Provided is a removal processing machine capable of easily accessing a fastening member of a spindle head cover from the interior of a processing chamber. This removal processing machine includes: a spindle that holds a tool; a spindle motor that is connected to the spindle, and causes the spindle to rotate; a spindle head to which the spindle and the spindle motor are attached; a spindle head cover that is fixed to the spindle head, and protects the spindle and the spindle motor from scattered matter generated by processing; a drive mechanism that advances and retracts the spindle head along the axial direction of the spindle; and a cover body that partitions a processing chamber, and prevents the scattered matter from being flung out of the processing chamber. When the spindle head is positioned at any coordinates in the coordinate region in which the spindle head is advanced and retracted by the drive mechanism, a fastening member provided to the spindle head cover is positioned inside the processing chamber, and the fastening member can be installed or removed from the interior of the processing chamber.

Description

removal processing machine

[0001] The present disclosure relates to a removal machine.

[0002] Conventionally, removal processing machines are known that perform removal processing on a workpiece using a tool held by a spindle. Various components, such as a tool changer, a motor, and air-related devices, are attached to a spindle head to which the spindle is fixed. A spindle head cover is attached to the spindle head to protect these components from flying debris, such as chips and cutting fluid mist, generated during processing (see, for example, Patent Document 1).

[0003] A removal machine may be provided with a cover body to prevent scattering of debris such as chips and cutting fluid mist from scattering around the removal machine. The cover body is arranged to surround the outside of the main components of the removal machine, and the space inside the cover body forms a machining chamber. To prevent foreign matter adhering to this cover body from entering the spindle head, the spindle head cover is arranged inside a ceiling cover that forms the ceiling part of the cover body, and is configured so that the end of the spindle head cover is always exposed from the top of the machining chamber to the outside of the machining chamber so that it can protect the spindle head up to a position higher than the bottom surface of the ceiling cover even when the spindle head is positioned at the lowest point of machine operation.

[0004] Japanese Patent Application Laid-Open No. 2004-142054

[0005] When performing maintenance on the spindle motor and other components installed in the spindle head, it is necessary to remove the spindle head cover. Because the spindle head cover is secured by multiple fastening members, all of the fastening members must be released before the spindle head cover can be removed.

[0006] However, some of the fastening members provided on the spindle head cover are arranged at the end of the spindle head cover to suppress vibration of the spindle head cover when the removal machine is in operation. As a result, some of the fastening members are always located outside the machining chamber of the removal machine, making it impossible for an operator to access all of the fastening members from inside the machining chamber. In this case, an operator must use a stepladder or the like to fasten and unclamp the fastening members from outside the machining chamber at the top of the removal machine, which is extremely inefficient.

[0007] An object of the present disclosure is to provide a removal machine that allows easy access to the fastening members of a spindle head cover from inside a machining chamber.

[0008] The present disclosure relates to a removal processing machine having a spindle that holds a tool, a spindle motor connected to the spindle and rotating the spindle, a spindle head to which the spindle and the spindle motor are attached, a spindle head cover fixed to the spindle head and protecting the spindle and the spindle motor from debris generated during processing, a drive mechanism that moves the spindle head forward and backward along the axial direction of the spindle, and a cover body that defines a processing chamber and prevents the debris from scattering outside the processing chamber, wherein when the spindle head is located at any coordinate within a coordinate region in which it is moved forward and backward by the drive mechanism, a fastening member provided on the spindle head cover is located inside the processing chamber, and the fastening member can be fastened and unclamped from inside the processing chamber.

[0009] 1 is a perspective view showing a removal processing machine according to one embodiment. FIG. 3 is a perspective view of the removal processing machine shown in FIG. 1 as seen from above. FIG. 4 is a plan view of the removal processing machine shown in FIG. 1. FIG. 5 is a side view of the removal processing machine with the spindle head moved to the highest point, cut along line A-A in FIG. 3. FIG. 6 is a side view of the removal processing machine with the spindle head moved to the lowest point, cut along line A-A in FIG. 3. FIG. 7 is a perspective view, partially cut away, showing the positional relationship between the spindle head cover and the ceiling cover of the removal processing machine with the spindle head moved to the lowest point. FIG. 8 is an exploded view showing the configuration of the spindle head cover.

[0010] An embodiment of the present disclosure will be described in detail below with reference to the drawings. In Fig. 1, a removal processing machine 1 has a processing chamber 30 defined by a plurality of cover bodies 20 on a base 10 installed on the floor. The plurality of cover bodies 20 are each made of a plate-like member and are arranged on the front, left and right side surfaces, rear surface, and top surface of the processing chamber 30, respectively, to separate the inside and outside of the processing chamber 30. This prevents scattering of chips, cutting fluid mist, and other debris generated inside the processing chamber 30 during processing from scattering outside the processing chamber 30. "Prevention" does not necessarily mean complete prevention, but also includes cases where most of the scattering is prevented in actual use.

[0011] Here, the directions shown in the figure will be defined. The X direction indicates the width direction and left-right direction of the removal machine 1, and points to the right when the removal machine 1 is viewed from the front. The Y direction indicates the depth direction and front-rear direction of the removal machine 1, and points to the front direction of the removal machine 1. The Z direction indicates the height direction and up-down direction of the removal machine 1, and points to the upward direction of the removal machine 1.

[0012] The multiple cover bodies 20 are composed of a front cover 21 that forms the front surface of the processing chamber 30, side covers 22, 22 that form the left and right side surfaces of the processing chamber 30, a rear cover 23 that forms the rear surface of the processing chamber 30, and a ceiling cover 24 that forms the ceiling of the processing chamber 30. The front cover 21 and the left and right side covers 22, 22 each constitute a door body that can be opened and closed. The interior of the processing chamber 30 is opened by moving at least one of the front cover 21 and the side covers 22, 22 in the opening direction. Figure 1 shows a state in which the front cover 21 is open. By opening the interior of the processing chamber 30, an operator can access the interior of the processing chamber 30.

[0013] The ceiling cover 24 is formed in a box shape and protrudes further upward than the upper ends of the front cover 21, the side covers 22, 22, and the rear cover 23. The ceiling cover 24 has a front ceiling cover 241 arranged to face the front of the removal processing machine 1, side ceiling covers 242, 242 arranged to face both the left and right sides of the removal processing machine 1, a rear ceiling cover 243 arranged to face the rear of the removal processing machine 1, and an upper ceiling cover 244 arranged to face the top of the removal processing machine 1.

[0014] The top ceiling cover 244 has a rectangular cutout at the rear. This forms a rectangular recess 244a in the ceiling cover 24. The position where the recess 244a is formed in the top ceiling cover 244 corresponds to the position of the spindle head 42, which will be described later. A bottom ceiling cover 245 is formed within the recess 244a at a position lower than the top ceiling cover 244. In Figures 4 and 5, the dashed line CL indicates the height position of the bottom ceiling cover 245.

[0015] Inside the processing chamber 30, a processing machine main body 40 is installed on a base 10. The processing machine main body 40 has a column 41, a spindle head 42, a spindle 43, a spindle motor 44, a drive mechanism 45, a turret 46, and a table 47.

[0016] The column 41 is erected on the rear side of the base 10. The spindle head 42 is attached to the front of the column 41 so as to be movable up and down. The spindle 43 is attached to the front of the spindle head 42. The spindle 43 holds a tool (not shown). In this embodiment, the axial direction of the spindle 43 is arranged along the Z direction (up and down direction).

[0017] The spindle motor 44 is disposed at the upper end of the spindle 43 and is connected to the spindle 43. The spindle motor 44 is driven to rotate the spindle 43 about its axial direction, thereby rotating a tool (not shown) held by the spindle 43. The drive mechanism 45 is formed, for example, by a servo motor. The drive mechanism 45 is disposed at the upper end of the spindle head 42 and is driven to move the spindle head 42 linearly in the Z direction (up and down direction) along the column 41. The movement of the spindle head 42 causes the spindle 43 to move linearly in the Z direction (up and down direction).

[0018] The turret 46 is installed in an upper portion of the machining chamber 30 in front of the spindle head 42, and is equipped with a plurality of tools (not shown) to be held by the spindle 43 for replacement. The table 47 is disposed on the base 10 in front of the column 41, and a workpiece (not shown) to be machined is placed on the table 47. In this embodiment, the spindle head 42 is driven by the drive mechanism 45 to move forward toward the workpiece (not shown) for machining, and move backward away from the workpiece (not shown) for tool replacement, etc.

[0019] As shown in Figures 2 to 6, a spindle head cover 50 is attached to the spindle head 42. The spindle head cover 50 is a metal plate-like member formed into a roughly U-shape in a plan view. The spindle head cover 50 is arranged to surround the front and both left and right side surfaces of the upper side of the spindle head 42, following the planar shape of the spindle head 42 when viewed from above, and is fixed to the spindle head 42. This protects the spindle 43 and spindle motor 44 from flying debris such as chips and cutting fluid mist that are generated during machining. "Protection" does not necessarily mean that flying debris such as chips and cutting fluid mist is completely blocked, but also includes cases where most of the debris is blocked in actual use.

[0020] 4 and 5, the spindle head cover 50 is fastened at its lower end to both left and right side surfaces 42a, 42a of the spindle head 42 by a plurality of bolts 53. In this embodiment, the bolts 53 arranged at the lower end of the spindle head cover 50 are "first fastening members."

[0021] As shown in FIGS. 2 and 4 to 6, the spindle head cover 50 fixed to the spindle head 42 extends further upward than the spindle head 42 and surrounds the sides of the spindle motor 44 located at the upper end of the spindle 43 and the drive mechanism 45 located at the upper end of the spindle head 42.

[0022] Spindle head cover 50 fixed to spindle head 42 moves forward and backward linearly in the vertical direction together with spindle head 42 by being driven by drive mechanism 45. Bottom ceiling cover 245 of ceiling cover 24 is formed with cutout portion 245a cut out in a shape that allows spindle head 42 and spindle head cover 50 to be inserted therethrough.

[0023] 4, when the spindle head 42 moves backward to the highest point, the upper end side of the spindle head cover 50 fixed to the spindle head 42 passes through the cutout portion 245a of the bottom ceiling cover 245 and protrudes above the bottom ceiling cover 245. At this time, the plurality of bolts 53 that fasten the spindle head cover 50 to the spindle head 42 are positioned below the position of the bottom ceiling cover 245 and are arranged inside the machining chamber 30.

[0024] 5 and 6, when the spindle head 42 moves forward to its lowest point, the spindle head cover 50 fixed to the spindle head 42 is not positioned completely below the bottom ceiling cover 245. Even when the spindle head 42 moves forward to its lowest point, the upper end of the spindle head cover 50 always remains protruding above the bottom ceiling cover 245 and is positioned so as to be exposed to the outside of the machining chamber 30. Therefore, scattered matter such as chips and cutting fluid mist inside the machining chamber 30 is prevented from scattering to the outside of the machining chamber 30 through the cutout portion 245a of the bottom ceiling cover 245.

[0025] Here, the structure of the spindle head cover 50 will be further described. The spindle head cover 50 is divided into multiple cover members, each made of a metal plate. More specifically, as shown in Figure 7, the spindle head cover 50 has a front cover member 51 that covers the front surface of the spindle head 42, and a pair of side cover members 52, 52 that cover both the left and right side surfaces 42a, 42a of the spindle head 42.

[0026] The front cover material 51 has a flat front portion 511 that abuts against the front surface of the spindle head 42, and a pair of mounting pieces 512, 512 that extend rearward from both the left and right ends of the front portion 511, and is formed by bending a metal plate.

[0027] The side cover materials 52, 52 are formed by bending a metal plate and have side portions 521, 521 bent to fit the shape of the side surface of the spindle head 42, and attachment piece portions 522, 522 protruding forward from the front edges of the side portions 521, 521. Bolts 53, which are first fastening members, fasten the side cover materials 52, 52 to the side surfaces 42 a of the spindle head 42 on the front and rear sides of the lower end of the spindle head cover 50.

[0028] The mounting pieces 522, 522 of the side cover materials 52, 52 abut against the mounting pieces 512, 512 of the front cover material 51 from both the left and right outer sides. At least one screw hole 512a, 512a, 522a, 522a is formed in each of the mounting pieces 512, 512, 522, 522 at corresponding positions. At least the inner surfaces of the screw holes 512a, 512a of the mounting pieces 512, 512 of the front cover material 51 are formed with female threads.

[0029] The front cover material 51 and the side cover materials 52, 52 are fastened together by bolts 54. The bolts 54 have male threads that pass through the screw holes 512a, 512a, 522a, 522a, and the male threads are threaded into the female threads on the inner surfaces of the screw holes 512a, 512a, thereby fixing the front cover material 51 and the side cover materials 52, 52 together. In this embodiment, the bolts 54 that fasten the front cover material 51 and the side cover materials 52, 52 are "second fastening members." In this embodiment, the front cover material 51 and the side cover materials 52, 52 are fastened together by two bolts 54 lined up vertically.

[0030] In the spindle head cover 50, the bolt 54, which is the second fastening member, is positioned higher than the bolt 53, which is the first fastening member. The vertically aligned bolts 54 fasten the front cover material 51 and the side cover materials 52, 52 at the free end of the spindle head cover 50, which protrudes higher than the spindle head 42. This prevents the spindle head cover 50 from vibrating due to vibrations caused when the removal machine 1 is in operation. The bolt 54 is positioned closer to the bottom ceiling cover 245 than the bolt 53. In other words, the bolt 54 is positioned closer to the outside of the machining chamber 30 than the bolt 53. The bolt 54 is located inside the machining chamber 30, but is positioned closer to the outside of the machining chamber 30 than the bolt 53. However, it is desirable to position the bolt 54 in a position inside the spindle head cover 50 so as not to interfere with the spindle motor 44.

[0031] However, as shown in Figure 5, when the spindle head 42 has moved forward to its lowest point, all of the bolts 54, like the bolt 53, are positioned below the bottom ceiling cover 245 and are disposed inside the machining chamber 30. Therefore, when removing the spindle head cover 50 for maintenance of the spindle head 42, the worker can easily access all of the bolts 53, 54 from inside the machining chamber 30 by moving the spindle head 42 forward to its lowest point. The worker can fasten and release all of the bolts 53, 54 provided on the spindle head cover 50 from inside the machining chamber 30, which provides excellent operability.

[0032] In the above embodiment, the bolts 54 fastening the front cover material 51 and the side cover materials 52, 52 together are not limited to those provided so as to be positioned below the bottom ceiling cover 245 when the spindle head 42 moves forward to the lowest point. All of the fastening members provided on the spindle head cover 50 only need to be located inside the machining chamber 30 when the spindle head 42 is located at any of the coordinates within the coordinate range in which it moves forward and backward by the drive mechanism 45.

[0033] The female threads that thread onto the bolts 54 that fasten the front cover material 51 and the side cover materials 52, 52 are not limited to those formed on the inner circumferential surfaces of the threaded holes 512 a, 512 a, 522 a, 522 a. The female threads may be formed on nuts (so-called "welded nuts") (not shown) that are fixed by welding or the like to the inside of the mounting piece portions 512, 512 of the front cover material 51, for example.

[0034] The spindle head 42 is not limited to one configured to move forward and backward up and down. Although not shown, the spindle head 42 may be configured to move forward and backward in the lateral direction (front-back or left-right direction) of the removal processing machine 1.

[0035] The following supplementary notes are further disclosed regarding the above-described embodiment and modified examples. (Supplementary Note 1) A machining chamber (30) including a spindle (43) for holding a tool, a spindle motor (44) connected to the spindle (43) for rotating the spindle (43), a spindle head (42) to which the spindle (43) and the spindle motor (44) are attached, a spindle head cover (50) fixed to the spindle head (42) for protecting the spindle (43) and the spindle motor (44) from debris generated by machining, a drive mechanism (45) for moving the spindle head (42) forward and backward along the axial direction of the spindle (43), and a machining chamber (30). and a cover body (20) that partitions the machining chamber (30) and prevents the scattered material from scattering outside the machining chamber (30), and when the spindle head (42) is located at any coordinate within a coordinate range in which it is moved forward and backward by a drive mechanism (45), fastening members (53, 54) provided on the spindle head cover (50) are located inside the machining chamber (30), and the fastening members (bolts 53, 54) can be fastened and unclamped from inside the machining chamber (30).

[0036] (Appendix 2) In the removal processing machine (1) of Appendix 1, the spindle head cover (50) is divided into a plurality of cover materials (front cover material 51, side cover material 52), and the fastening members (bolts 53, 54) have a first fastening member (bolt 53) that fastens the spindle head cover (50) to the spindle head (42) and a second fastening member (bolt 54) that fastens the plurality of cover materials (front cover material 51, side cover material 52) together.

[0037] (Appendix 3) In the removal processing machine (1) of Appendix 2, the second fastening member (bolt 54) in the spindle head cover (50) is arranged closer to the outside of the processing chamber (30) than the first fastening member (bolt 53).

[0038] (Appendix 4) In the removal processing machine (1) of Appendix 2 or 3, the first fastening member (bolt 53) and the second fastening member (bolt 54) are bolts having male thread portions, and female thread portions or nuts that screw onto the male thread portions are provided at the locations on the spindle head cover (50) where the first fastening member (bolt 53) and the second fastening member (bolt 54) are fastened.

[0039] (Appendix 5) In the removal processing machine (1) of any of Appendices 1 to 4, regardless of the coordinates in the coordinate area at which the spindle head (42) moved by the drive mechanism (45) is located, a part of the spindle head cover (50) is always positioned so as to be exposed to the outside of the processing chamber (30).

[0040] REFERENCE SIGNS LIST 1 Removal processing machine 20 Cover body 30 Processing chamber 42 Spindle head 43 Spindle 44 Spindle motor 45 Drive mechanism 50 Spindle head cover 51 Front cover material 52 Side cover material 53 Bolt (first fastening member) 54 Bolt (second fastening member)

Claims

1. The spindle that holds the tool, A spindle motor connected to the spindle and rotating the spindle, The spindle head to which the spindle and the spindle motor are attached, A spindle head cover fixed to the spindle head protects the spindle and spindle motor from flying debris generated during machining, A drive mechanism for moving the spindle head forward and backward along the axial direction of the spindle, A removal processing machine having a cover body that partitions the processing chamber and prevents the scattering of the aforementioned materials to the outside of the processing chamber, A removal machine in which, when the spindle head is located at any coordinate within the coordinate region in which it moves forward and backward by the drive mechanism, a fastening member provided on the spindle head cover is located inside the machining chamber, and the fastening member can be fastened and unfastened from inside the machining chamber.

2. The aforementioned spindle head cover is divided into multiple cover materials, The removal machine according to claim 1, wherein the fastening member comprises a first fastening member for fixing the spindle head cover to the spindle head and a second fastening member for fixing the plurality of cover materials together.

3. The removal machine according to claim 2, wherein in the spindle head cover, the second fastening member is positioned on the side closer to the outside of the processing chamber relative to the first fastening member.

4. The first fastening member and the second fastening member are bolts having a male threaded portion. The removal machine according to claim 2 or 3, wherein the spindle head cover is provided with a female threaded portion or nut that screws onto the male threaded portion at the location where the first fastening member and the second fastening member are fastened together.

5. The removal machine according to any one of claims 1 to 3, wherein a portion of the spindle head cover is always positioned so as to be exposed to the outside of the machining chamber, regardless of which coordinate in the coordinate region the spindle head, which is moved by the drive mechanism, is located at.