JPH052852U - Manual tool changer for machining center - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the efficiency of manual tool change work in a machining center with an internal cover that separates the machining side from the setup side. [Structure] A partition cover 14 that partitions the inside of the machine body cover 10 accommodating the column 4 into a setup space 15 and a processing space 16 in the front and rear.
To provide. The partition cover 14 is provided with a drawer 18 for tool exchange having a tool holder 21. With respect to the tool holder 21 of the drawer 18, the tool T is received and mounted by the movement of the spindle 5. The worker attaches and detaches the tool T to and from the tool holder 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a manual tool changing device for a machining center, which assists in manually changing tools.

[0002]

[Prior Art]

 Conventionally, in a machining center 50 that uses a jig 51 for attaching a work W to a machining side and a setup side, as shown in a schematic plane view in FIG. 5, the inside of a machine body cover 52 is divided into a machining side and a setup side. There is a cover 53 provided inside the front door 54. The column 55 is of a type in which a tool magazine (not shown) is mounted. A plurality of machining centers 50 are installed side by side.

In such a machining center 50, when a tool that has broken or has reached the end of its tool life is to be replaced, when one is installed alone, the tool is attached and detached from a door (not shown) on the side of the machine. ..

When a large number of machining centers 50 are densely arranged as shown in the drawing, the front door 54 is opened because the tools cannot be exchanged from the side. Further, in the case where the inner cover 53 is provided as in this example, the inner cover 53 is provided with a tool exchange window 56 that is manually opened and closed, and the tool of the column 55 is exchanged from this window 56.

[0005]

[Problems to be solved by the device]

 However, for the safety of the operator, it is usual to provide an interlocking device so that the column 55 cannot be moved when the front door 54 is opened.Therefore, in the type having the internal cover 53, There is a problem that many operations are required for the tool replacement work, and the work is troublesome.

That is, the following steps are required for tool replacement. a. Open the front door 54. b. Open the tool change window 56. c. Close the front door 54 (to prevent interlocking). d. The column 55 is advanced to a position where the tool projects from the tool change window 56. e. Open the front door 54. f. Change tools. g. Close the front door 54. h. Move Colum 55 back. i. Open the front door 54. j. Close the tool change window 56. k. Close the front door 54. As described above, the tool must be changed through the 11 steps from a to k, which requires a great deal of trouble and time. In addition, in the process of the above f, in order to attach / detach the tool to / from the spindle, it is necessary to press the loosening operation button that operates the tool fixing mechanism in the spindle, and hold the tool with one hand and with the other hand. You have to operate the buttons. Therefore, it is difficult to attach and detach the tool, and the tool may be accidentally dropped.

An object of the present invention is to improve the efficiency of manual tool changing work in a machining center of a type having an internal cover for partitioning the processing side and the setup side.

[0008]

[Means for Solving the Problems]

 The configuration of the present invention will be described with reference to FIG. 1 corresponding to the embodiment. The manual tool changer for this machining center is provided with a partition cover (14) for partitioning the inside of the machine cover (10) accommodating the column (4) into a setup space (15) and a processing space (16). The partition cover (14) is provided with a drawer (18) for tool exchange having a tool holder (21). The drawer (18) disposes the tool (T) held by the tool holder (18) at a position where it can be inserted into and removed from the main shaft (5) by moving the main shaft (5) of the column (4).

[0009]

[Action]

 According to this structure, when removing the tool (T) from the spindle (5), the spindle (5) is moved with the empty drawer (18) being pushed in, and the tool (T) is attached to the spindle (5). The tool (T) that has been opened is transferred to the tool holder (21) of the drawer (18). When attaching the tool (T) to the spindle (5), the tool (T) is held by the tool holder (21) of the drawer (18) and the drawer (18) is pushed. In this state, the spindle (5) is moved, and the tool (T) is transferred from the tool holder (21) to the spindle (5) and mounted.

[0010]

【Example】

 An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, a slide base 3 is installed on a rail 2 provided on a bed 1 so as to be movable back and forth, and a column 4 is mounted on a rail 7 provided on a slide base 3 so as to be movable left and right. .. The column 4 has a spindle head 5a equipped with a spindle 5 for rotating a tool T, and is vertically movable. A tool magazine 6 holding a large number of tools T is provided at the upper end of the front surface.

At the front part of the bed 1, there is provided a rotatable table 9 on which a jig 8 can be placed and which is rotatable. The jig 8 is formed so that two workpieces W, a setup side and a processing side, can be mounted. ing. The column 4 and the rotary table 9 are covered with a body cover 10, and an operation panel 12 is installed outside the body cover 10 via an arm 13.

The machine body cover 10 is provided with a front door 11 on its front surface, and an inner cover 14 for partitioning the inside into a setup space 15 and a processing space 16 is provided in the center of the jig 8. A tool exchange window 17 is provided in the inner cover 14, and a drawer 18 for tool exchange is provided through the window 17 so as to be movable between the setup space 15 and the processing space 16. As shown in FIG. 2, the tool change window 17 is formed in a notched shape following the upper edge of the jig insertion window 26 formed in the inner cover 14, and the jig insertion window 26 has a cutout shape as shown in FIG. The jig 8 is loosely fitted.

The tool T includes a tool body 19 such as a milling cutter and a tool holder 20, and the tool holder 20 is a taper shank type tool having a collet chuck. The tool holder 20 has a V groove 20a on its peripheral surface, and a tool holder 21 that engages with the V groove 20a and holds the tool T is erected in the drawer 18. Further, a handle 22 for advancing and retracting the drawer 18 is provided on the front surface of the drawer 18, and the back surface and the top surface of the drawer 18 mount the tool T held by the tool holder 21 on the spindle 5. It is open for time.

As shown by the chain line in FIG. 2, two front doors 11 are provided in a sliding door type, and are supported slidably laterally along upper and lower rails (not shown). An open / close detector 23 (FIG. 1) including a proximity switch is provided above the slide path of the front door 11.

In FIG. 1, a control device 24 is composed of an NC device and a programmable controller for controlling the entire machining center, and when the open / close detector 23 of the front door 11 detects the open state, it moves the column 4 back and forth and An interlock means 25 is provided to disable other operations. Further, the operation panel 12 is provided with operation switches 27 and 28 for inputting operation commands of the column 4 and the spindle head 5a when exchanging tools between the spindle 5 and the drawer 18. ..

According to the above configuration, tool exchange is performed in the next step. (A) First, the operator operates a predetermined operation switch of the operation panel 12 to move the main shaft 5 to a position corresponding to, for example, the upper side of the drawer 18 that is advanced to the working space 16 side, as shown in FIG. 3 (A). Input the operation command to move to. (B) After the spindle 5 moves to the target position, the front door 11 is opened, and the drawer 18 is pushed in the processing space 16 side, that is, the arrow R direction as shown in FIG. 3 (B). At this time, the column 4, spindle head 5a and other operations are disabled by the interlock means 25 which receives a detection signal from the open / close detector 23 which detects the open state of the front door 11. Next, the front door 11 is closed, and the operation switch 27 of the operation panel 12 is operated to input the operation command for tool change from the spindle 5 to the drawer 18. (C) As a result, the predetermined tool exchange cycle for removal set in the control device 24 is executed. That is, the column 4 moves in the direction of arrow F as shown in FIG. 3 (B), and the main shaft 5 comes to a position directly above the drawer 18. Then, the spindle 5 descends as shown by an arrow V1 in FIG. 3C, and the tool holder 21 of the drawer 18 engages with the V groove 20a of the tool holder 20. At this time, the spindle fixing mechanism in the spindle 5 with respect to the tool holder 20 is unlocked. Such a tool exchange cycle at the time of removal is executed. (D) Next, open the front door 11 and pull out the drawer 18 in the direction of arrow F as shown in FIG. As a result, the tool T held by the tool holder 21 of the drawer 18 is removed from the spindle head 5. (E) After that, a new tool T is held by the tool holder 21 of the drawer 18, and then the drawer 18 is advanced in the arrow R direction as shown in FIG. 4 (A). (F) Next, the front door 11 is closed and the operation switch 28 of the operation panel 12 is operated to input an operation command for tool change from the drawer 18 to the spindle head 5. (G) As a result, the mounting tool exchange cycle set in the control device 24 is executed. That is, the column 4 moves in the direction of arrow F as shown in FIG. 4 (B), and the tool holder 20 of the tool T held in the drawer 18 is inserted into the spindle 5. At this time, the spindle 5 is locked with respect to the tool holder 20. Then, the spindle 5 moves upward in the direction of arrow V2 shown in FIG. 4 (C). As a result, the tool T is pulled away from the tool holder 21 of the drawer 18. (H) After that, the front door 11 is opened, and the drawer 18 is pulled out in the direction of the arrow F shown in FIG. 4D to retract the drawer 18 from the processing space 16 to the setup space 15 and close the front door 11. In this way, the tool exchange is completed.

As described above, according to this configuration, the tool T can be attached / detached between the tool holder 21 of the drawer 18 and the spindle 5 only by inputting an operation command by the operation switches 28, 29 of the operation panel 12. You can do it. Therefore, the operator only needs to take out the used tool T from the drawer 18 and hold the new tool T in the tool holder 21 in the drawer 18, and grasp the tool with one hand as in the conventional case. However, there is no need to operate the switch, and the tool can be changed easily and safely.

[0018]

EFFECTS OF THE INVENTION The manual tool changer for a machining center according to the present invention is provided with a drawer for tool change having a tool holder on the partition cover for partitioning the inside of the machine body cover. The tool can be attached and detached between the spindle and the spindle. Therefore, the operator only has to manually put the tool in and out of the drawer, and the work of changing the tool can be greatly simplified.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view in which a broken side view and a functional block diagram of an embodiment of the present invention are combined.

FIG. 2 is a front view thereof.

FIG. 3 is an explanatory view showing the tool removing operation.

FIG. 4 is an explanatory view showing the tool mounting operation.

FIG. 5 is a plan view of a conventional example.

[Explanation of symbols]

2 ... Rail, 4 ... Column, 5 ... Spindle, 5a ... Spindle head, 6 ...
Tool magazine, 8 ... Jig, 9 ... Rotary table, 10 ... Machine cover, 11 ... Front door, 12 ... Operation panel, 14 ... Inner cover, 15
... Setup space, 16 ... Machining space, 17 ... Tool exchange window, 18 ... Drawer, 21 ... Tool holder, 24 ... Control device, 25 ... Interlock means, 27, 28 ... Operation switch

Claims (1)

[Claims for utility model registration] [claim 1] In a machining center having a partition cover for partitioning the inside of a machine cover accommodating a column into a setup space and a processing space, the partition cover has a tool holder. A manual tool changing device for a machining center in which a drawer for tool exchange is provided, and the drawer holds the tool held by the tool holder at a position where it can be inserted into and removed from the spindle by the movement of the spindle of the column.