JPH04133537U - Machine Tools - Google Patents

Abstract

(57) [Summary] [Objective] The object is to provide a machine tool that can automatically index and set any desired angle and its machining position using one spindle head. [Structure] A spindle head equipped with a spindle and its feeding mechanism, a swivel table with the spindle head installed on the upper surface, a feed table on which the swivel table is mounted so as to be rotatable around a fixed vertical axis; a rotating means for rotating the swivel table around the vertical axis on the feed table to change the angle of the axis of the main spindle with respect to the workpiece; A machine tool characterized by comprising a feed device that approaches or retreats from the machine tool.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is suitable for machine tools that perform machining at different angles to the workpiece using the spindle head. In particular, any desired angle and its machining position can be controlled by one spindle head and its machining position. This invention relates to a machine tool suitable for automatic indexing and setting using a feeding device.

0002

[Conventional technology]

Conventionally, in a line that processes multiple types of workpieces such as A, B, C... For example, the machining angle for drilling etc. for each workpiece is different, and the workpiece is In cases where the orientation cannot be changed, the Multiple spindle heads were installed to process each angle specifically. more In this case, the space on one machine tool or the same station is narrow and If it is not possible to install multiple spindle heads, the machine tool or station Multiple units were arranged to accommodate different angles.

0003 On the other hand, if the direction of the workpiece can be changed on the above line, the machining angle should be The angle can be determined by changing the orientation of each workpiece so that it matches the axis of the I was responding to this.

0004

[Problem that the idea aims to solve]

In the configuration in which multiple spindle heads are provided on one machine tool, each spindle head is used exclusively for each angle, so it can be set arbitrarily for other different angles. It becomes impossible to determine. Moreover, it requires a spindle head for each different angle. However, the problem was that the entire machine became larger and more complex. And this problem The same problem occurs when arranging multiple machine tools or stations. was.

[0005] In addition, the method of responding by changing the orientation of each workpiece is It is necessary to accurately determine the angle and change the orientation of each type of workpiece. There is a point. However, automating this process would only make the equipment more complex. Moreover, there is a problem in that the device cannot be used for processing other workpieces.

[0006] In view of the above-mentioned problems of the prior art, the present invention has been developed to provide a method for processing at any desired angle and its machining position. We provide a machine tool that can automatically index and set the position using a single spindle head. The porpose is to do.

[0007]

[Means to solve the problem]

In order to achieve the above object, the present invention includes a spindle head equipped with a spindle and its feeding mechanism, A swivel base with the spindle head installed on the top surface, and a swivel base that rotates the swivel base around a fixed vertical axis. a feed stand mounted so as to be rotatable; and the turntable is rotated around the vertical axis on the feed stand; a rotating means for changing the angle of the axis of the main spindle with respect to the workpiece; and It is equipped with a feeding device on which a table is placed and the feed table approaches or retreats from the workpiece. The configuration is as follows.

[0008] The rotating means of the swivel table is a ball screw driven by an NC servo motor. and a ball nut that fits into the ball screw and moves, and one end of which is connected to the swivel base, The other end is connected to the ball nut, and as the ball nut moves, the swivel base is moved to the vertical position. A link that rotates around a vertical axis, and a rotation position of the rotating base on the feed base. It is preferable to have a configuration consisting of a fixing device that fixes the fixing device with a fixing device and can release the fixing.

[0009]

[Effect]

With the above configuration, when the rotating means provided on the feed table is activated, the rotating The stand and spindle head can be rotated about the vertical axis. For this reason, rotation The spindle head can be automatically indexed to any angle based on the rotation speed or rotation angle of the means. becomes possible. Then, place the feed stand and approach the feed stand to the workpiece. The spindle head can be automatically indexed to any desired angle because it is equipped with a feed device that moves the spindle head backward or backward. Not only that, but it can also be automatically set to any position. For this reason, the main The relative position between the axis of the shaft and the workpiece can be easily and accurately set to the desired position. It becomes possible to do so.

0010 The rotation means includes a ball screw driven by an NC servo motor and a ball screw driven by an NC servo motor. The structure is such that the link is combined with a ball nut that fits and moves in the same manner. As a result, when the NC servo motor on the feed table is activated, the ball screw is rotated. A ball nut fitted to the ball screw moves linearly. This linear movement The signal is transmitted to the swivel table on the feed stand where the spindle head is connected via the link, and the rotation The table and spindle head are rotated about the vertical axis. For this reason, the rotation of the ball screw The position of the ball nut can be set using an NC servo motor based on the number or rotation angle. This makes it possible to automatically index the spindle head to any desired angle. and, Equipped with a fixing device that fixes the swivel base at any swivel position and can release the fixation. Therefore, fixing and unfixing work is easy, and once the angle has been set, it is easy to process. Even inside, the swivel table is securely fixed on the feed table, allowing machining accuracy to be maintained.

[0011]

【Example】

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Figure 1 shows the spindle head A partially sectional side view of a machine tool having a feed angle changing device, FIG. 2 is a plan view of FIG. It is a diagram.

0012 In the figure, 1 is a spindle head with a spindle feeding mechanism, and 2 is a spindle head with spindle head 1 on the top surface. The installed turning table 3 is a vertical shaft fixed perpendicularly to the top surface of the feed table 5. A swivel base 2 is rotatable around the swivel via a bearing 4. 6 is NC servo A ball screw driven by a motor 7, the tip side of the ball screw 6 is connected to a bracket 8. is supported by the feed table 5, and the other end is connected to an NC servo motor via a coupling 9. 7 is connected. 10 is a bracket that supports the NC servo motor 7 on the feed base 5; It is. 11 is a ball nut fitted to the ball screw 6; Moves in a straight line by turning. 12 has one end connected to the swivel base 2 via the pin 13, and the other end connected to the swivel base 2 via the pin 13. A link connected to the ball nut 11 via the link 14 allows movement of the ball nut 11. Accordingly, the swivel base 2 and spindle head 1 are rotated around a vertical axis 3. . The above-mentioned symbols 6 to 14 constitute a rotating means. 15 is centered on vertical axis 3 A pedestal 16 is provided with an arc-shaped groove 15a and is attached to the feed table 5. A clamper 17 moves within the groove 15a as the swivel base 2 rotates. 6 and fixed on the swivel base 2, the clamper 16 can be moved at any time. It operates to fix the position of the swivel base 2 with respect to the feed base 5 and release the position fixation. It is a fixing device that 18 places the feed stand 5 and brings the feed stand 5 close to the workpiece. This is a feeding device that moves the machine forward or backward. The feeding direction of the feeding device 18 is This corresponds to the direction of movement of the nut 11.

[0013] With the above configuration, when the NC servo motor 7 on the feed table 5 is operated, the ball screw 6 is rotated, and the fitted ball nut 11 moves linearly. This straight line movement , is transmitted to the swivel base 2 connected via the link 12, and the swivel base 2 and the spindle head 1 around the vertical axis 3. Therefore, the number of rotations or rotations of the ball screw 6 By setting the position of the ball nut 11 with the NC servo motor 7 based on the rotation angle, etc. The spindle head 1 can be automatically indexed to any desired angle θ shown in Fig. 2. . Once the angle θ is set, the clamp cylinder 17 is operated and the clamper 16 is By fixing in the arc-shaped groove 15a of the base 15, the swivel base 2 can be attached to the feed base 5. Can be easily held. Note that the accuracy of the angle θ set in this case is It depends on the processing accuracy of the screw 6 and the fitting accuracy between the ball screw 6 and the ball nut 11. , it is possible to bring these accuracies within a desired range.

[0014] Furthermore, as shown in this embodiment, by having a configuration including the feeding device 18, Not only can the spindle head 1 be automatically indexed to an arbitrary angle θ, but also the spindle head 1 can be automatically set to any position. For this reason, the spindle of spindle head 1 Easily and precisely set the relative position of the axis and workpiece to the desired position. becomes possible.

[0015] In the above embodiment, the rotating means for the swivel base 2 and the spindle head 1 are provided by an NC support. It moves by fitting into the ball screw 6 and the ball screw 6 driven by the motor 7. The ball nut 11 and the link 12 were configured to be combined, but instead of this configuration, Alternatively, other configurations may be used, such as index tables. Also, In the above embodiment, a machine tool equipped with a spindle head was explained, but instead of a spindle head, Similar actions and effects are achieved for measuring machines equipped with a measuring head and its feeding device. Of course.

[0016]

[Effect of the idea]

As explained above, the present invention allows any desired angle and its machining position to be processed with a single machine. This has the effect of automatically indexing and machining with the spindle head.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view of a machine tool according to an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1;

[Explanation of symbols]

1...Spindle head, 2...Swivel base, 3...Vertical axis, 5...Feed base, 6
... Ball screw, 7... NC servo motor, 11... Ball nut, 12... Link, 16... Clamper, 17... Clamp cylinder, 18... Feeding device.

Claims (2)

[Scope of utility model registration request] Claim 1: A spindle head including a spindle and its feeding mechanism, a swivel table having the spindle head installed on its upper surface, and a feed table on which the swivel table is rotatably mounted around a fixed vertical axis. , rotating the swivel table about the vertical axis on the feed table;
A workpiece comprising a rotating means for changing the angle of the axis of the main spindle with respect to the workpiece, and a feeding device on which the feeder is placed and moves the feeder to approach or retreat from the workpiece. machine. 2. The rotating means of the swivel base includes a ball screw driven by an NC servo motor and a ball nut that fits into the ball screw and moves, one end of which is connected to the swivel base and the other end of which is connected to the ball screw. a link that is connected to a nut and rotates the swivel base around the vertical axis as the ball nut moves;
fixing the swivel base on the feed base at an arbitrary swivel position;
The machine tool according to claim 1, further comprising a fixing device capable of releasing the fixing.