JPH04101713A - Groove working machine - Google Patents

Abstract

PURPOSE:To adjust a working head speed appropriately by providing a servomotor for turning a nut member as well as another servomotor for turning a feed screw on a working machine for working a V-shape groove in a workpiece on a worktable. CONSTITUTION:In a working machine 1, a worktable is provided forward of a lower frame, and a working head 27 is provided in the upper position of the worktable. A plurality of cutting tools 29 each top end portion of which is of, for example, a V-shape are detachably provided on the working head 27 via tool holders 31, and the working head 27 is movable in the lengthwise direction of the worktable. A feed screw 37 parallel to a guide rail 33 is provided and a nut member 39 screwed to the feed screw 37 is rotatably provided on the working head 27. Further, a first servomotor 43 for turning the nut member 39 as well as a second servomotor for turning the feed screw 37 is provided.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a groove machining machine capable of machining, for example, a V-shaped groove on the upper surface of a work supported by a work table. .

(Prior Art) Conventionally, in a groove machining machine for machining, for example, a V-shaped groove on the upper surface of a workpiece supported on a worktable, a vertically movable cutting tool with a V-shaped tip is placed above the worktable. A machining head equipped with a movable head is movable in the longitudinal direction of the work table. The processing head was equipped with a nut member rotated by a drive motor such as a servo motor, and a feed screw threaded into the nut member was provided above the work table and extended in the longitudinal direction. Note that the feed screw could not be rotated.

Therefore, after the workpiece is supported on the worktable, the cutting tool is lowered according to the depth of cut. Then, by appropriately driving the servo motor to rotate the nut member, the processing head is moved in the longitudinal direction of the work table. In this way, desired grooves are formed on the workpiece. After the groove machining is completed, the machining head is returned to its original position by driving the servo motor and moving the machining head in the longitudinal direction.

(Problems to be Solved by the Invention) When performing groove machining, it is necessary to move the machining head in the longitudinal direction of the work table at a relatively slow speed in order to increase the cutting force. On the other hand, after completing the groove setting process, it is necessary to move it in the longitudinal direction at a relatively high speed and return it to its original position.

However, in the conventional groove machining machine as mentioned above, it is not possible to change the speed of the machining head appropriately, and if the speed of the machining head is not appropriate, the groove machining is performed without sufficient cutting force. There have been problems in that it takes time for the machining head to return to its original position.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a groove machining machine that can appropriately adjust the speed of a machining head in order to solve the above-mentioned problems.

[Structure of the invention]

(Means for Solving the Problems) In order to solve the conventional problems as described above, in the present invention, a work table that supports a work is provided, and a vertically movable cutting tool is installed above the work table. A processing head is provided to be movable in the longitudinal direction of the work table, and the processing head is provided with a nut member in order to move the processing head in the longitudinal direction of the work table.
A feed screw screwed into the nut member is provided above the work table and extends in the longitudinal direction, a first drive motor is provided for rotating the nut member, and a first drive motor is provided for rotating the feed screw. It is equipped with two drive motors.

(Function) In the above configuration, first, the work table is made to support the work. Next, the cutting tool is lowered according to the depth of cut. Then, the processing head is moved in the longitudinal direction of the work table at a relatively slow speed by driving the first drive motor to rotate the nut member or by driving the second drive motor to rotate the feed screw. let Thereby, desired groove machining can be performed using a predetermined cutting force.

After finishing the desired groove machining, the first drive motor and the second drive motor are respectively driven to rotate the nut member and the feed screw, thereby moving the machining head in the longitudinal direction at a relatively high speed. to return it to its original position in the longitudinal direction.

This makes it possible to prepare for the next groove machining.

(Example) Referring to FIG. 2, the groove machining machine 1 for machining, for example, a V-shaped groove has a box-like shape extending relatively long in the left-right direction (in the front and back directions toward the paper surface in FIG. 2). The lower frame 3 is provided with a lower frame 3, and left and right side frames 5 are erected on the left and right sides of the lower frame 3, respectively. An upper frame 7 is provided above the left and right side frames 5.

A front plate 9 is integrally connected to this upper frame 7, and is also firmly connected by a connecting plate 11 provided as appropriate.

That is, the groove processing machine 1 has a structure in which the front plate 9 and the like are arranged above the lower frame 3.

In order to support the workpiece W to be processed, the lower frame 3
There is a work table 13 on the front side (left side in Fig. 2).
is the provision. An auxiliary table 17 for supporting the work W via a bracket 15 fixed to the lower frame 3 is provided on the front side of the work table 13.

A plurality of brackets 19 are appropriately fixed near the left and right side portions on the rear side (right side in FIG. 2) of the lower frame 3. Each of these brackets 19 is provided with a guide rail 21 extending to a position close to the work table 13.
1 is provided with a movable clamp device 23 for gripping a workpiece W so as to be movable in the front-back direction. In order to securely fix the work W to the work table 13 during groove machining, a plurality of fixing clamp devices 125 are appropriately provided on the lower side of the front plate 9 in the left and right direction.

Referring to FIGS. 1 and 2, a movable clamp device 23,
In order to machine, for example, a V-shaped groove on the upper surface of the work W that is positioned and fixed by the fixed clamp device 25, a processing head 27 is installed at a position vertically above the work table 13.
is the provision. In the processing head 27, a plurality of cutting tools 29 each having a V-shaped tip, for example, are mounted on a tool holder 31.
It is provided so that it can be attached and detached freely via the .

The processing head 27 is movable in the left-right direction (left-right direction in FIG. 1), in other words, in the longitudinal direction of the work table 13.

More specifically, a guide rail 33 extending in the longitudinal direction of the work table 13 is installed on the front plate 9, and a traveling member 35 provided on the guide rail 33 so as to be movable in the longitudinal direction is attached to the processing head 27. Installation.

In order to move the processing head 27 in the longitudinal direction of the work table 13, a feed screw 37 parallel to the guide rail 33 is provided above the work table 13, and a nut member 39 screwed onto the feed screw 37 is provided. Processing head 2
7 via a bearing 41 so as to be freely rotatable.

In order to rotate the nut member 39, the processing head 2
7 is provided with a first servo motor 43, and this first servo motor 43 and the nut member 39 drive and drive the driven pulley 4.
5.47, timing belt 49, drive, driven gear 51
．． It is interlocked and connected via 53.

The right end of the feed screw 37 is rotatably supported by a deep groove ball bearing 57 provided on a fixed member 55 fixed to the right side frame 5, and the left end of the feed screw 37 is rotatably supported by a deep groove ball bearing 57 provided on a fixed member 55 fixed to the right side frame 5. It is rotatably supported by an angular bearing 61 provided on a fixed member 59. In order to rotate the feed screw 37, the left side frame 5
is provided with a second servo motor 63, and this second servo motor 63 and the feed screw 37 are connected to the drive and driven pulley 6.
5.67, and are interlocked and connected via a timing belt 69. A collar 71 is provided between the angular bearing 61 and the driven pulley 67, and the driven pulley 67 is fixed to the feed screw 37 via a V-nut 75.

With the above configuration, by appropriately driving the first servo motor 43, the nut member 39 can be rotated via the drive pulley 45, the driven pulley 47, and the like. Therefore, the processing head 27 can be moved in the longitudinal direction of the work table 13 via the guide rail 33 and the traveling member 35.

Further, by appropriately driving the second servo motor 63, the feed screw 37 can be rotated via the drive pulley 65, the driven pulley 67, etc., and the processing head 27 can be moved in the longitudinal direction of the work table 13. I can do it.

An elevating body 75, which constitutes a part of the processing head 27 and is provided with the cutting tool 29, is provided to be movable up and down.

More specifically, referring to FIG. 2, the processing head 27 is provided with a guide member (not shown) extending in the vertical direction, and an elevating body 75 is provided on this guide member so as to be movable up and down. . In order to move the elevating body 75 up and down, the processing head 27 is provided with a screw rod 79 that is interlocked with a servo motor 77. It is installed on.

With the above configuration, the screw rod 79 is rotated by appropriately operating the servo motor 77.

Therefore, the elevating body 75 and the cutting tool 29 can move up and down via the nut member.

The operation of this embodiment will be explained based on the above-described configuration.

First, after the workpiece W is supported on the worktable 13, the end portion of the workpiece W is gripped by the movable clamp device 23. While gripping the workpiece W, the movable clamp device 23 is appropriately moved in the front-back direction to bring the workpiece W to a predetermined position in the front-back direction. And fixed clamp device 2
5 is operated appropriately to fix the work W to the work table 13.

After the workpiece W is fixed to the worktable 13, the servo motor 77 is appropriately driven to machine the cutting tool 29 according to the depth of cut. Then, the first servo motor 6
5 is appropriately driven to rotate the nut member 39, the processing head 27 is moved in the longitudinal direction of the work table 13 at a relatively slow speed. This makes it possible to machine a V-shaped groove in the workpiece W using a predetermined cutting force. At this time, the second servo motor 63 is kept in servo lock.

After completing the V-shaped groove machining on the workpiece W, the first servo motor 43 and the second servo motor 63 are appropriately driven to rotate the nut member 39 and the feed screw 37 together. As a result, the processing head 27 moves in the longitudinal direction at a relatively high speed and returns to its original position.

According to this embodiment, by providing the first servo motor 43 for rotating the nut member 39 and the second servo motor 63 for rotating the feed screw 37, the machining head 27 in the longitudinal direction of the work table 13 is provided. The speed can be changed as appropriate. Therefore, the desired groove machining can be performed with sufficient cutting force, and the machining head 27 can be returned to its original position in a short time to prepare for the next groove machining in a short time. It is possible to improve work efficiency.

Further, since the driving force of two servo motors 43.63 is used, the capacity of one servo motor 43.63 may be small, and the power of the motor can be saved.

Note that the present invention is not limited to the description of the embodiments described above, and can be implemented in various other forms by making appropriate changes.

〔Effect of the invention〕

As can be understood from the description of the above embodiments, according to the present invention, by providing the first drive motor for rotating the nut member and the second drive motor for rotating the feed screw, processing The speed of the head in the longitudinal direction of the worktable can be changed as appropriate. Therefore, the desired groove can be machined with sufficient cutting force, and the machining head can be returned to its original position in a short time to prepare for the next groove machining. Efficiency can be improved.

Furthermore, since the driving force of two drive motors is used, the capacity of one drive motor can be small, and the power of the motor can be saved.

[Brief explanation of drawings]

The drawings are for explaining embodiments according to the present invention.
The figure shows the main parts of this embodiment. FIG. 2 is a side view of the groove processing machine. 1...Groove processing machine 27...Processing head 29.
... Cutting tool 37 ... Feed screw 39 ... Nut member 43 ... First servo motor 63 ... Second
Servo motor diagram 2

Claims (1)

[Claims] A work table that supports a work is provided, and a processing head equipped with a vertically movable cutting tool is provided above the work table so as to be movable in the longitudinal direction of the work table, and the processing head is moved in the longitudinal direction of the work table. In order to move the nut member, the processing head is provided with a nut member, and a feed screw screwed into the nut member is provided above the work table and extends in the longitudinal direction, and a first drive motor is provided to rotate the nut member. A groove machining machine characterized in that it is provided with a second drive motor for rotating the feed screw.