JP5910243B2 - Machine tool controller - Google Patents

Description

  The present invention relates to a machine tool control device including a control board for controlling the drive of a machine tool.

  In general, a machine tool includes a control device (machine tool control device) for controlling the drive of the machine tool on the back surface thereof. The control device includes a housing, and the housing supplies an amplifier that adjusts power supplied to each motor that moves the spindle of the machine tool in the front-rear, left-right, and up-down directions, and a magazine that holds a plurality of tools. An amplifier for adjusting electric power, a control board for controlling the operation of the machine tool, a breaker for supplying or cutting off electric power, and the like are accommodated (for example, see Patent Document 1).

  The breaker has a rectangular parallelepiped shape that is long in the vertical direction, and includes a switch portion at the center in the vertical direction. A power cable from a power source is connected to the upper end of the breaker, and a power line for supplying power to an amplifier, a control board, and the like is connected to the lower end of the breaker. Electric power is supplied or cut off by turning on / off the switch unit.

  If an operator touches the upper end of the breaker, there is a risk of electric shock. For this reason, a breaker is provided at the top of the housing to ensure safety.

JP 2007-168031 A

  An insertion hole for inserting a power cable from the power source is provided on the lower surface of the housing. By providing on the lower surface, the oil used for the machine tool is prevented from entering the housing. The electric wire is connected to a breaker located at an upper portion along the lower surface and the side surface of the housing. In some cases, a control board that is driven at a low voltage is provided on a lower surface and a side surface of the housing. The electric wire has a high voltage, and unnecessary radiation from the electric wire may affect the operation of the control board.

  This invention is made | formed in view of such a situation, and it aims at providing the control apparatus for machine tools which can eliminate the influence by the unnecessary radiation from an electric wire, and can maintain safety | security.

A machine tool control device according to the present invention is a machine tool control device including a connection portion to which an electric wire for supplying power to a machine tool is connected, and including a breaker for supplying or cutting off power to the machine tool. A cover that covers the connecting portion, and a rectangular parallelepiped housing that accommodates the breaker and is disposed so that one surface thereof is horizontal, and the electric wire is inserted through the one surface that is located on the lower side. An insertion hole is provided, and the breaker is fixed to a lower portion of the casing above the insertion hole, an opening is provided on the other surface of the casing that intersects the one surface, and the breaker is A mounting plate to be mounted is provided in the housing so as to face the opening, the connecting portion is located at an upper portion of the breaker, and the cover has an upper edge of the mounting plate so as to cover an upper side of the connecting portion. Protruding from the opening to the opening side It has characterized the Rukoto.

In the present invention, since the connection portion is covered with a cover, it is possible to prevent an operator from being electrocuted by a high voltage, and since safety is ensured, the power cable is located near the control board. The breaker can be arranged in correspondence with the arrangement of the control board so as not to be positioned.
In addition, since the breaker is arranged near the insertion hole provided on the lower surface of the housing, it is not necessary to arrange the power cable over a long distance along the lower surface and side surface of the housing, and the power cable is broken at the shortest distance. Connect to. Therefore, it is possible to eliminate that the control board provided on the side surface or the lower surface of the housing is affected by unnecessary radiation from the power cable.
Further, since the cover covers the upper side of the connection portion, it is possible to reliably prevent an object from coming into contact with the connection portion from above and to prevent electric shock.

  The machine tool control device according to the present invention is characterized in that a power adjusting unit for adjusting power supplied to the machine tool is provided on the upper side of the cover.

  In the present invention, since the cover is provided on the lower side of the amplifier, when the amplifier is mounted after the cover is mounted in the housing, the amplifier can be temporarily placed on the cover, thereby improving the efficiency of the mounting work. be able to.

  In the machine tool control device according to the present invention, the cover has a notch at a position corresponding to an edge portion of the opening.

  In the present invention, the cover extends to the opening side, and a notch is provided at a location corresponding to the edge portion of the opening. By the cutout, the cover can be extended to the maximum, and the safety can be improved to the maximum.

  In the machine tool control device according to the present invention, since the connection portion is covered with a cover, it is possible to prevent an operator from receiving an electric shock due to a high voltage, and safety is ensured. The breaker can be arranged corresponding to the arrangement of the control board so that the power cable is not located near the control board. Therefore, the position of the breaker can be changed according to the position of the control board, and the influence of unnecessary radiation on the control board from the power cable can be eliminated.

1 is a schematic perspective view of a machine tool. It is a simplified front view of a machine tool. It is a simplified right side view of a machine tool. FIG. 3 is a schematic perspective view of a machine tool in which a cover for covering the tool changer and the guide rail is omitted. It is a perspective view which shows the cover for machine tools schematically. It is a rear view which briefly shows the internal structure of the control apparatus which abbreviate | omitted description of the lid | cover. It is an external appearance perspective view which briefly shows the control apparatus which cancelled | released the closure by a lid | cover. It is a perspective view which briefly shows the protector which protects a breaker. It is a perspective view which briefly shows a breaker and a protection body. It is a left view which shows a breaker and a protector roughly. It is a partial expansion perspective view which outlines the structure of the vicinity of a breaker.

  Hereinafter, the present invention will be described in detail with reference to the drawings showing a machine tool according to an embodiment. In the following description, up and down, left and right, and front and rear indicated by arrows in the figure are used. The front and back surfaces correspond to the front and rear surfaces, respectively. The operator operates the machine tool in front and attaches / detaches the workpiece. 1 is a schematic perspective view of a machine tool, FIG. 2 is a schematic front view of the machine tool, FIG. 3 is a schematic right side view of the machine tool, and FIG. 4 is a cover that covers a tool changer and a guide rail. It is a schematic perspective view of a machine tool in which 403 and the like are omitted.

  The machine tool 100 includes a machine body. The machine body includes a base 20, a fixed base 21, a Y-direction moving device 22, an X-direction moving device 26, a column 28, a Z-direction moving device 30, a spindle head 32, and a tool changer 10. Etc. The base 20 is fixed on the floor surface. The fixed base 21 has a rectangular box shape that is long in the front-rear direction, and is provided on the base 20. The fixed base 21 fixes the Y-direction moving device 22.

  An X-direction moving device 26 is provided on the Y-direction moving device 22. A column 28 is provided on the X-direction moving device 26. The X-direction moving device 26 and the Y-direction moving device 22 support the column 28 so as to be movable in the X direction (left-right direction) and the Y direction (front-back direction).

  The column 28 supports the spindle head 32 through the Z-direction moving device 30 so as to be movable in the Z direction (vertical direction). The tool changer 10 changes a tool attached to the spindle head 32.

  As shown in FIG. 4, the Y-direction moving device 22 includes a pair of guide rails 22a and 22a parallel to each other, a plurality of blocks 22b, 22b, ..., 22b, a Y-direction moving table 22c, and the like. The guide rails 22a and 22a extend in the front-rear direction on the upper surface of the fixed base 21 with an appropriate interval in the left-right direction. The blocks 22b, 22b, ..., 22b are fitted to the guide rails 22a, 22a so as to be movable in the front-rear direction. The Y-direction moving base 22c is fixed on the blocks 22b, 22b,. A Y-direction drive motor (not shown) drives a ball screw mechanism (not shown), so that the Y-direction moving base 22c moves in the front-rear direction.

  The X-direction moving device 26 includes a pair of guide rails 26a, 26a parallel to each other, a plurality of blocks 26b, 26b,..., 26b, a column base 26c, and an X-direction drive motor (not shown). The guide rails 26a, 26a extend in the left-right direction on the upper surface of the Y-direction moving table 22c with an appropriate interval in the front-rear direction. The blocks 26b, 26b, ..., 26b are fitted to the guide rails 26a, 26a so as to be movable in the left-right direction. The column base 26c is fixed on the blocks 26b, 26b,. The X-direction drive motor drives a ball screw mechanism (not shown), so that the column base 26c moves in the left-right direction. The column 28 is fixed on the column base 26c. The column 28 is moved in the Y direction and the X direction by the Y direction moving device 22 and the X direction moving device 26.

  The Z-direction moving device 30 includes a pair of guide rails 30a, 30a parallel to each other, a plurality of blocks 30b, 30b,..., 30b, a spindle head base 30c, and a Z-direction drive motor (not shown). The guide rails 30a and 30a are extended in the vertical direction on the front surface of the column 28 with an appropriate interval in the horizontal direction. The plurality of blocks 30b, 30b, ..., 30b are fitted to the guide rails 30a, 30a so as to be movable in the vertical direction. The spindle head base 30c is fixed to the front surfaces of the blocks 30b, 30b, ..., 30b. When the Z-direction drive motor drives a ball screw mechanism (not shown), the spindle head base 30c moves in the vertical direction.

  The spindle head 32 is fixed to the spindle head base 30c. By driving and controlling the X direction drive motor, the Y direction drive motor, and the Z direction drive motor, the spindle head 32 moves back and forth, left and right, and up and down.

  The main shaft 34 is connected to a main shaft motor 35 provided at the upper end of the main shaft head 32. The main shaft 34 rotates around the shaft center by driving the main shaft motor 35. The spindle 34 can rotate the workpiece fixed to the workpiece holding unit 120 by rotating around the axis center with a tool holder (not shown) holding a tool attached to the lower end thereof. . A cooling fan (not shown) is fixed to the upper end of the spindle motor 35.

  As shown in FIG. 1, the tool changer 10 includes a tool magazine 11 and a magazine motor 12. The tool changer 10 conveys a plurality of tool holders, and attaches / detaches the tool holder to / from the lower end portion of the main shaft 34. The tool holder holds a tool.

  FIG. 5 is a perspective view schematically showing a machine tool cover. As shown in FIG. 5, the machine tool 100 includes a machine tool cover that surrounds the machine body. A machine tool cover is provided on the upper side of the base 20. The machine tool cover extends in the vertical direction, and includes a rectangular front wall 50, a left wall 60, a right wall 70, and a rear wall 80 that respectively cover the front, rear, left and right of the machine body of the machine tool 100. Further, the machine tool 100 is covered with a rectangular ceiling 90 that covers the upper side of the machine tool 100 and is parallel to the left-right direction and the front-back direction.

  The right wall 70 is provided with two removable panels 71 and 71 at the center thereof. The panels 71 and 71 are disposed in an opening provided in the central portion of the right wall 70. The operator removes the panels 71 and 71 as necessary, puts his hand through the opening, or enters the machine tool cover through the opening to perform maintenance management of the machine tool 100. The left wall 60 is also provided with an opening at the center thereof, like the right wall 70, and two removable panels are arranged in the opening. The rear wall 80 is provided with a control device 81 having a control board for controlling the operation of the machine tool 100 and an amplifier for adjusting power supplied to each motor. A central portion of the ceiling 90 protrudes upward in order to avoid contact with the spindle head 32, the column 28, and the like.

  A vertically long rectangular opening 51 is provided at the center of the front wall 50, and an operation panel 54 for an operator to input a command is provided to the right of the opening 51. A vertically long rectangular right door 52 and left door 53 are juxtaposed in the opening 51 so as to be movable in the left-right direction.

  The right door 52 is disposed behind the left door 53. A handle 52 a is provided on the front surface of the right door 52. When the operator holds the handle 52a and pulls it to the left side, the right door 52 and the left door 53 sequentially move to the left side and open.

  6 is a rear view schematically showing the internal configuration of the control device 81 in which the description of the lid 83 is omitted, and FIG. 7 is an external perspective view schematically showing the control device 81 released from being closed by the lid 83. As shown in FIGS. 6 and 7, the control device 81 (machine tool control device) includes a vertically long rectangular parallelepiped housing 82 having an opening 82 b on the rear side, and a lid 83 for opening and closing the opening 82 b. The edge portion of the opening 82b extends inward. The lower surface (one surface) of the housing 82 is arranged horizontally. An insertion hole 82 a through which the power cable 111 (electric wire) is inserted is provided on the lower surface of the housing 82. A breaker 84 that can cut off the connection between the power cable 111 and the power line is provided on the lower left side of the housing 82. The breaker 84 is located in the vicinity of the insertion hole 82a. The breaker 84 has a long rectangular parallelepiped shape, and has an input part 84b (connection part) and an output part 84c above and below it. A resin case 184 is provided in each of the input part 84b and the output part 84c. The resin case 184 is provided with a through hole 184a through which the power cable 111 or the power line is inserted (see FIGS. 9 and 11 described later). A power cable 111 from the power source 110 is inserted into the through hole 184 a of the upper resin case 184 and connected to the input portion 84 b of the breaker 84. A power line (not shown) for supplying power, such as an amplifier, is inserted into the through hole 184 a of the lower resin case 184 and connected to the output portion 84 c of the breaker 84.

  A power cable 111 passes through the insertion hole 82a and connects the input portion 84b of the breaker 84 and the 200V power source 110. A switch portion 84 a is provided on the rear surface of the breaker 84. When the lid 83 is closed, the switch portion 84a is connected to a rotary lever 85 provided on the surface of the lid 83. When the lever 85 rotates in one direction with the lid 83 closed, the switch portion 84a moves in one direction to release the connection between the power cable 111 and the power line, and the power supply is forcibly stopped. When the lever 85 rotates in the other direction with the lid 83 closed, the switch unit 84a moves in the other direction, reconnects the power cable 111 and the power line, and the supply of power is resumed. Note that the lid 83 is opened after the lever 85 rotates in one direction and the power line is disconnected. A fan 112 that cools the control device 81 is provided on the left outer surface of the housing 82.

  A Z-direction amplifier 86 that adjusts the power supply to the Z-direction drive motor is provided at the center on the right side of the front surface of the housing 82. A spindle amplifier 87 for adjusting the power supply to the spindle motor 35 is provided on the left side of the Z direction amplifier 86 and above the breaker 84. An X-direction amplifier 88 and a Y-direction amplifier 89 that adjust power supply to the X-direction drive motor and the Y-direction drive motor are juxtaposed on the left and upper sides of the front surface of the housing 82.

  An AVR 91 (Automatic Voltage Regulator) for converting a 200V system voltage into a 24V system or a 12V system is provided at the upper center of the front surface of the housing 82. Below the AVR 91, a fan protection device 92 that protects / relays the cooling fan (not shown) and a protection device 95 that protects an input / output board 93 and an NC unit, which will be described later, from overcurrent are arranged side by side. It is set up. The fan protection device 92 and the protection device 95 are connected and unitized. An optional amplifier 97 is provided below the fan protection device 92 as necessary. As the option amplifier 97, for example, when the machine tool includes a robot arm that attaches a workpiece to the workpiece holding unit 120, an amplifier that adjusts the power supplied to the drive motor of the robot arm can be used.

  A control board 94 for controlling the driving of each motor described above, including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc., on the right inner surface of the housing 82, and the control board 94 and an input / output board 93 for inputting and outputting signals between various devices in the casing 82 are arranged in parallel. The control board 94 is positioned above the input / output board 93. The control board 94 and the input / output board 93 are used by inputting a 24V or 12V voltage from the AVR 91 and converting them to a 5V, 10V or 25V system. The input / output board 93 and the fan protection device 92 are connected by a detection cable 96 for detecting a voltage input to the fan protection device 92. As will be described later, the power supply voltage is input to the fan protection device 92. The fan protection device 92 and the protection device 95 are unitized, and the power supply voltage is also input to the protection device 95. The input / output board 93 monitors the power supply voltage input to the fan protection device 92 and monitors the input voltage of the protection device 95.

  The output portion 84 c of the breaker 84 is connected to X to Z direction amplifiers 88, 89, 86, a main shaft amplifier 87, a fan protection device 92, a protection device 95, and an option amplifier 97. The power supply voltage (200 V system) is supplied to X to Z direction amplifiers 88, 89, 86, a main shaft amplifier 87, a fan protection device 92, a protection device 95, and an option amplifier 97. The protection device 95 is connected to the AVR 91, and a power supply voltage (200 V system) is input to the AVR 91. The AVR 91 converts the input voltage into a 24V system or a 12V system. The AVR 91 is connected to the control board 94 and the input / output board 93, and a 24V or 12V system voltage is input to the control board 94 and the input / output board 93. The control board 94 and the input / output board 93 are used by converting a 24V system or 12V system voltage into, for example, a 5V system, 10V system, or 25V system.

  8 is a perspective view schematically showing the protector 400 that protects the breaker 84, FIG. 9 is a perspective view schematically showing the breaker 84 and the protector 400, and FIG. 10 is a left side view schematically showing the breaker 84 and the protector 400. FIG. 11 is a partially enlarged perspective view schematically showing the configuration in the vicinity of the breaker 84.

  The breaker 84 is surrounded by the protector 400 on the upper side, the front side, and the left side. As shown in FIG. 8, the protector 400 includes a mounting plate 401, a fixing plate 402, and a cover 403. The mounting plate 401 has a rectangular plate shape that is long in the vertical direction, and includes two screw holes 401a at the right edge. The screw holes 401a are lined up and down. The lower part of the left edge portion of the mounting plate 401 extends leftward compared to the upper part. A fixed plate 402 perpendicular to the mounting plate 401 protrudes rearward from the extended end of the extended portion. The fixed plate 402 has a vertically long rectangle and has insertion holes 402a, 402a, 402a, 402a at four corners. A screw is inserted through the insertion hole 402a. A plate-like cover 403 perpendicular to the mounting plate 401 protrudes rearward from the upper edge of the mounting plate 401. As shown in FIG. 8, the cover 403 has a rectangular shape that is long on the left and right. An L-shaped notch 403 a is provided at a corner portion located on the left rear side of the cover 403.

As shown in FIG. 9, the breaker 84 includes a mounting rib 84 c that is long in the vertical direction on the right portion thereof. The mounting rib 84c is provided with two insertion holes 84d vertically. Both the insertion holes 84 d correspond to the screw holes 401 a of the mounting plate 401. The positions of the insertion hole 84d and the screw hole 401a are aligned, and a screw is inserted into the insertion hole 84d and connected to the screw hole 401a. The breaker 84 is attached to the attachment plate 401.
As shown in FIG. 10, the cover 403 protrudes rearward from the breaker 84. The resin case 184 provided on the upper side of the breaker 84 is covered with the cover 403 on the upper side, and it is difficult for an object to come into contact with the connection portion between the power cable 111 and the input portion 84b from above.

  When each component is mounted in the casing 82, even if a screw used for mounting falls, the upper side of the resin case 184 is covered by the cover 403. Therefore, the screw is inserted into the through hole 184a of the resin case 184. Does not invade. Therefore, it is possible to prevent an operator from inserting a hand into the through-hole 184a in order to take out the screw and receiving an electric shock.

  As shown in FIG. 11, the protector 400 is provided on the lower left portion of the casing 82 so that the cover 403 is positioned below the spindle amplifier 87 and the fixing plate 402 is positioned on the left side surface of the casing 82. is there. A screw is inserted into the insertion hole 402 a of the fixing plate 402, and the fixing plate 402 is screwed to the lower part of the left side surface of the housing 82. The mounting plate 401 faces the opening 82b. The left edge portion of the opening 82b extends inward, and this extended portion is located inside the L-shaped notch 403a.

  The breaker 84 is located immediately above the insertion hole 82a and is close to the insertion hole 82a. Therefore, the power cable 111 inserted through the insertion hole 82a extends upward along the left side surface of the housing 82 and is connected to the input portion 84b at the shortest distance. Although the control board 94 and the input / output board 93 are provided on the right side of the casing 82, the power cable 111 is located on the left side of the casing 82 and is not disposed near the control board 94 and the input / output board 93.

  In the control device according to the embodiment, since the upper side of the input unit 84b is covered with the cover 403, it is possible to prevent an operator from receiving an electric shock due to a high voltage. Further, since safety is ensured, the breaker 84 can be arranged in correspondence with the arrangement of the control board 94 so that the power cable 111 is not located near the control board 94. Therefore, the position of the breaker 84 can be changed according to the position of the control board 94, and the influence of unnecessary radiation on the control board 94 and the input / output board 93 from the power cable 111 can be eliminated.

  Further, since the breaker 84 is disposed in the vicinity of the insertion hole 82a provided on the lower surface of the housing 82, the power cable 111 does not need to be disposed over a long distance along the lower surface and the side surface of the housing 82, and the shortest distance is achieved. Then, the power cable 111 is connected to the breaker 84. Therefore, it is possible to eliminate that the control board 94 provided on the side surface or the lower surface of the housing 82 is affected by unnecessary radiation from the power cable 111.

  Further, since the cover 403 is provided below the spindle amplifier 87, when the spindle amplifier 87 is attached after the cover 403 is installed in the housing 82, the spindle amplifier 87 can be temporarily placed on the cover 403. The efficiency of the mounting work can be improved.

  Further, the cover 403 extends to the opening 82b side, and a notch 403a is provided at a position corresponding to the edge portion of the opening 82b. The cutout 403a prevents the cover 403 from coming into contact with the edge portion of the opening 82b. Therefore, the cover 403 can be extended to the maximum, and the safety can be improved to the maximum.

  In addition, the voltage (200V system, 24V system, 12V system, 5V system, 10V system, or 25V system) used in the control device is an example, and other voltages may be employed depending on each component to be used. The positions of the amplifier, AVR 91, and the like in the housing 82 can be changed as appropriate according to the specifications.

  The embodiment described above is an exemplification of the present invention, and the present invention can be implemented in various modified forms within the scope defined by the matters described in the claims and the description of the claims. it can.

84 Breaker 84b Input part (connection part)
82 Housing 82a Insertion hole 82b Opening 87 Spindle amplifier (power adjustment unit)
94 Control board 111 Power cable (electric wire)
400 Protective body 401 Mounting plate 403 Cover 403a Notch

Claims (3)

In a machine tool control device having a connection part to which an electric wire for supplying electric power to a machine tool is connected, and having a breaker for supplying or cutting off electric power to the machine tool,
A cover covering the connection part ;
The breaker is housed, and includes a rectangular parallelepiped housing arranged so that one surface is horizontal ,
An insertion hole through which the electric wire is inserted is provided on the one surface located on the lower side,
The breaker is fixed to the lower part of the casing above the insertion hole,
An opening is provided on the other surface of the housing that intersects the one surface;
A mounting plate for attaching the breaker is provided in the housing so as to face the opening,
The connecting part is located at the top of the breaker;
The cover, from said upper edge of the mounting plate so as to cover the upper side of the connection portion protrude into the opening side, characterized in Rukoto machine tool controller. The machine tool control device according to claim 1 , wherein a power adjusting unit that adjusts power supplied to the machine tool is provided on an upper side of the cover. The cover machine tool control apparatus according to claim 1 or 2 characterized by having a notch at a position corresponding to the edge portion of the opening.

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