JP3014872U - Turning attachment for machine tools - Google Patents

Abstract

(57) [Summary] [Purpose] Turning and servicing can be done by mounting the work piece once.
Provided is an apparatus capable of continuously processing a curler, an index and the like. According to the present invention, a horizontal mounting base 10a and a vertical mounting base 10b are arranged at right angles to each other to form a mounting base 10 which can be fixed on a bed of a machine tool. A stator 14a is incorporated in a support 13a disposed on the horizontal base 10a, and a rotor 14b, which is thinner than the stator, is mounted to form a rotating portion 14. Bearings 16a, 16b are provided on the shaft 15 of the rotor, and a fluid circuit 17 is formed on the outer wall of the support base. A shaft plate 15 in which an indexing groove 15b is engraved on the outer peripheral portion on the upper portion of the shaft 15.
In addition, a clamp plate 19 having a divided groove 19a is provided so as to face each other. The shaft pre-
The chuck 21 is removably arranged on the belt 15a, and a control circuit is incorporated in the rotating portion so that the divided positioning and rotation required for processing can be provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is mounted on a machine tool such as an existing machining center (hereinafter referred to as MC), NC milling machine, jig grinder, etc., and rotates a workpiece on a bed of the machine tool to perform turning, circular and circular machining. -Regarding an attachment that performs processing and index processing.

[0002]

[Prior art]

 Conventional MC processing requires various processing such as turning, circular processing, indexing, etc. for one work piece. With conventional machine tools, turning is performed with a lathe. The circular processing and the index processing were performed by using different machine tools according to the purpose, such as a frying machine.

[0003]

[Problems to be solved by the device]

 However, if the machining process of MC is separately performed, (a) it takes a lot of labor and time for setup to position and accurately fix the workpiece for one machining. b) In addition, no matter how precise work is performed, unevenness in accuracy due to mounting errors is unavoidable, which causes deterioration in quality, and (c) has various problems such as complicated management of the mounting jig. Was there. In view of the above situation, the present invention provides a device which, when installed on an existing machine tool, allows a workpiece to be mounted once, thereby enabling continuous machining such as turning, circular and indexing. Is what you are trying to do.

[0004]

[Means for Solving the Problems]

 The apparatus of the present invention has a horizontal base and a vertical base which are perpendicular to each other and forms a mounting base which can be fixed on a bed of a machine tool such as a machining center. A support base with a circular hole formed in the center is connected to the base, and a stator is incorporated into the support base, and at the same time, a rotor is formed with a rotor formed thinner than the stator in the circular hole. A bearing for controlling vertical and horizontal vibrations is provided in the gap between the rotor shaft and the supporting base, and a fluid circuit for flowing a cooling fluid is formed on the outer wall of the supporting base. A clamp in which a shaft plate having a groove for indexing engraved on the outer peripheral portion is continuously provided on the upper portion of the shaft, and a split groove which is meshed with the index groove with the shaft plate sandwiched therein is engraved. Plates are arranged so as to face each other, and a slide mechanism is connected to the clamp plates to form a clamp portion. The shaft plate is provided with a mounting portion to which a chuck and a workpiece mounting face plate can be attached / detached, and the rotating portion is equipped with a control circuit for imparting the division positioning and rotation necessary for processing. . Then, it is preferable to incorporate a circuit for controlling the vertical movement of the spindle of the existing machine tool, the sliding movement of the bed in the X-axis and Y-axis directions, and the rotational movement of the rotating portion in association with each other.

[0005]

[Action]

 Select either the horizontal or vertical base of the mounting base, fix either one of them to the upper surface of the existing machine tool bed, mount the work piece on the chuck or mounting face plate, and mount the rotating part. Rotate and process with the blade attached to the machine tool. Then, it can be quickly turned, and if the work piece is swung to the required angle and processed with a blade, it can be used for sawing, indexing, etc. Multiple processes can be performed continuously. The temperature rise of the rotating part during machining is maintained at an appropriate temperature by the cooling fluid flowing in the fluid circuit provided on the pedestal, and vertical and horizontal vibrations control the vibration provided in the gap between the shaft and pedestal. The bearing rotates stably and maintains machining precision such as turning, circular and indexing. The rotating part, which is thinner than the stator and is connected to the shaft plate, is compact and has a small thickness, and the built-in control circuit controls swivel motion and split motion to perform all machining. It is done efficiently. By incorporating a circuit that controls the vertical movement of the spindle of the existing machine tool, the sliding movement of the bed in the X-axis and Y-axis directions, and the rotational movement of the rotating part, the cutting and A new processing method that alternately incorporates circular processing and index processing becomes possible, and processing means can be diversified.

[0006]

【Example】

 An embodiment will be described below with reference to the drawings. The device of the present invention uses an existing machine tool, for example, a machining center, and is installed on the machine base for use. As shown in FIG. It is possible to use an existing machining center which has a bed M slidable on the shaft and the Y-axis, and has a set mechanism for attaching and detaching a cutting tool to and from a rotating spindle on the upper part of the bed.

Then, as shown in FIGS. 1 and 2, on the bed M of the machining center, fitting pieces 11a, 11b, 11c, 11d for the T-grooves engraved in the bed M and a set screw are installed. The mounting base 10 is provided, and the mounting base 10 not only fixes the machine body, but also accurately indicates the horizontal and vertical postures of the workpiece held by the rotating part and the chuck described later. Therefore, a horizontal base 10a and a vertical base 10b are provided which form mutually accurate right-angled surfaces. The horizontal base 10a is formed horizontally on the bed M, and the vertical base 10b is provided with an abutting portion 12 for fixing the machine body 22 between the vertical base 10b and the machine body 22. .

A support 13a and a support 13b each having a circular hole formed therein are continuously provided on the mounting base 10, and a stator 14a having a coil wound around an iron core is incorporated between the support 13a and the supporting base 13b. The rotor 14b mounted on the shaft 15 is attached to form the rotating portion 14. The rotor 14b is formed thinner than the stator 14a, and a bearing 16a is provided between the support base 13c and the shaft 15 and a bearing 16b is provided between the support base 13d and the shaft 15. Supports the rotation of the shaft 15 and suppresses vibration in the vertical direction and horizontal direction during processing.

On the outer walls of the supporting bases 13a and 13b, a fluid circuit 17 for flowing a cooling liquid is engraved in a spiral groove 17a in order to suppress heat generation of the rotating portion 14, and a cover 18 is surrounded on the outer side thereof.

A shaft plate 15a is incorporated on the shaft 15, and an indexing groove 15b is formed on the outer peripheral surface of the shaft plate 15a. On the other hand, a clamp plate 19 is disposed on the outer side of the shaft plate 15a so as to face the shaft plate 15a, and the outer peripheral surface of the clamp plate 19 is meshed with the index groove 15b of the shaft plate 15a. A dividing groove 19a is formed. The lower part 19b of the clamp plate 19 faces a crank rod 20b connected to an air cylinder 20a which reciprocates up and down, and when the rotating part rotates, the cylinder descends to generate an index groove 15b and a dividing groove. Besides, a clamp mechanism for releasing the meshing with the shaft 19a and for assembling the cylinder to raise the indexing groove 15b and the dividing groove 19a to fix the shaft plate 15a is incorporated.

On the upper end surface of the shaft plate 15a, a chuck 21 having a biting piece 21b for fixing a workpiece or a workpiece mounting face plate is detachably attached by a screw 21a.

An electric control circuit for controlling the rotation is set on the rotating portion so that the number of rotations and the angle division are controlled, and the movement of the bed M of the machining center in the X-axis and Y-axis directions and the spindle are controlled. The computer control circuit is formed by associating the rotating part control of the attachment of the present invention with the control of the up and down slides. Further, the rotation speed of the rotating portion can be controlled in a wide range from low speed to high speed.

The operation of the device of the present invention will be described. First, when mounting the device, it is selected whether to stand the machine vertically or to use it horizontally according to the purpose of processing. The fitting pieces 11a and 11b of the base 10a and the fitting pieces 11c and 11d of the vertical base 10b in the case of the horizontal posture are fitted into the T-grooves of the bed M of the machining center, respectively. , Use the positioning key to fix it in place with the set screw. At this time, the vertical posture is accurately oriented in the vertical direction by the horizontal base 10a and the support bases 13a, 13b ... And the horizontal posture is also ensured by the abutment portion 12 arranged on the vertical base. Because it is supported, it maintains an accurate horizontal position.

When turning the workpiece, first, the posture of the machine body is selected in the vertical direction, the bite is set on the spindle, and the rotating portion 14 of the present apparatus is operated at a relatively high speed. Then, the drill that abuts the rotating workpiece slides in the vertical direction, grinds in the circumferential direction, and performs cutting. At this time, if the bed M of the machining center is slid in the X-axis and Y-axis directions in addition to the rotation of the rotating unit 14, the cutting trajectories can be diversified, and in addition to NC lathe machining, NC inner surface polishing and Can perform NC outer diameter polishing and NCJB processing.

Next, when performing circular machining, the rotor 14b is rotated at an extremely low speed along the indexing angle while the position and orientation of the machine body are kept as they are, and stopped at an accurate angle by numerical control. In addition to this control, in order to further increase the mechanical accuracy, a clamp mechanism is used, that is, the air-cylinder 20a is input to raise the head and the crank rod 20b is linked to move the crank. The clamp plate 19 fitted on the rod 20b is slid in the axial direction. Then, the index groove 19a formed on the outer peripheral surface of the clamp plate 19 meshes with the index groove 19a of the shaft plate 15a, and the shaft plate 15a and the shaft connected to the shaft plate 15a are connected by the meshing. Fix 15 at indexing angle. Therefore, if a drill is then attached to the spindle to make a hole, the circular machining can be performed at an accurate position. When moving to the next boring operation, the air-cylinder 20a is lowered and the clamp plate 19 is moved backward by the motion of the crank rod 20b so that the meshing of the indexing groove 15b with the dividing groove 19a is performed. After solving the above, the same operation as described above is repeated.

Further, when performing indexing, the machine body is fixed to the bed M in a horizontal posture, the blade is set on the spindle, and the rotor 14b of the rotary unit 14 is rotated at a predetermined angle at a low speed to perform the above-mentioned operation. Similarly, the shaft 15 is fixed at the indexing angle by the clamp mechanism. Then, while lowering the spindle, the bed M is reciprocally moved in the X-axis or Y-axis direction to grind the workpiece in the axial direction, and when the predetermined angle is completed, the engagement of the clamp mechanism is released and the next Index and perform index processing one after another.

The above turning, circular and indexing operations are labor-saving, requiring no setup change, since the workpiece can be moved to the next processing without being detached while being held by the chuck. Working time can be shortened. On the other hand, since there is no removal, it eliminates the positional error conventionally caused by the removal work and greatly improves the processing accuracy. For example, conventionally, in the case of forming a cylinder and forming a screw hole in a part of the cylinder, the cylinder was first formed into a cylinder shape by an NC lathe, and then transferred to a machining center to perform a punching operation. In the present invention, this can be processed continuously on the machining center without the need for setup change, and accurate work can be performed in a short time.

When the rotating portion 14 is operated at a relatively high speed during the above-described processing, the stator 14a and the rotor 14b are highly heated, but the outer walls of the supporting bases 13a and 13b are heated. When the cooling liquid is caused to flow in the fluid circuit 17 provided in the rotor 14, the heat of the stator 14a and the rotor 14b is absorbed through the bearing bases 13a and 13b made of metal having excellent thermal conductivity, and the rotating portion 14 is rotated. To thermally stabilize. At this time, since the fluid circuit 17 is formed by using the outer wall surface of the support and engraving the spiral groove 17a therein, the cooling efficiency is good and the form is simple.

Further, when a circuit for controlling the vertical movement of the spindle of the existing machine tool and the sliding movement of the bed in the X-axis and Y-axis directions and the rotational movement of the rotating portion in association with each other is incorporated, A new processing method that alternately incorporates cutting processing, circular processing, and index processing will be possible, and processing means can be diversified.

[0020]

[Effect of device]

 Since the device of the present invention based on the above configuration can be used in a form in which an existing MC machine tool is used and attached to it, it can be used as a numerical control lathe for turning a workpiece on the MC machine tool. Since the angle can be divided, the circular processing and index processing can be performed quickly without changing the setup, which saves labor and time for attaching and detaching. Further, since a plurality of processes can be performed with one mounting, the occurrence of unevenness in accuracy due to mounting error is eliminated, and the quality is further improved. By constructing a control circuit that correlates between the control circuit of the existing machine tool and the rotating part of this machine, a new machining method that alternately incorporates cutting, circular machining, and indexing is possible. It becomes possible and the processing means can be diversified. Also, since the entire device was made sufficiently thin and compact, it could be used just by placing it on the MC machine tool, and it was labor-saving that did not require time and effort for attachment and detachment.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of the device of the present invention.

FIG. 2 is a plan view of the device of the present invention.

FIG. 3 is a side view of the device of the present invention.

FIG. 4 is a front view showing a state in which the device of the present invention is mounted on an MC.

[Explanation of symbols]

 10 Mounting base 10a Horizontal base 10b Vertical base 11a, 11b, 11c, 11d Fitting piece 12 Contact part 13a, 13b, 13c, 13d Abutment base 14 Rotating part 14a Stator 14b Rotor 15 Shaft 15a Shaft plate 15b Indexing groove 16a, 16b Bearing 17 Fluid circuit 17a Groove 18 Cover 19 Clamp plate 19a Dividing groove 19b Lower part 20a Air-cylinder 20b Crank rod 21 Chuck 21a Screw 21b Biting piece 22 Machine body

Claims (2)

[Scope of utility model registration request] 1. A horizontal base and a vertical base at right angles to each other.
And a mounting base which can be fixed on the bed of the machine tool is formed, and a support base having a circular hole formed at the center is continuously provided on the horizontal base, and the stator is attached to the support base. Incorporating and forming a rotating part with a rotor formed thinner than the stator inside the circular hole,
A bearing for controlling vertical and horizontal vibrations is provided in the gap between the shaft of the rotor of the rotary unit and the support base, and a fluid circuit for flowing a cooling fluid is engraved on the outer wall of the support base. A clamp plate having a grooved groove formed on the outer peripheral edge of the shaft is connected to the upper part of the shaft, and a split groove is formed on the shaft plate so as to mesh with the grooved groove. −
The slide plate is connected to the clamp plate to form a clamp portion, and the shaft plate is provided with a mounting portion to which a chuck or a workpiece mounting face plate is detachably mounted. A turning attachment for machine tools, characterized in that it incorporates a control circuit that gives the division positioning and rotation required for machining. 2. A machine incorporating a circuit for controlling the vertical movement of a spindle of an existing machine tool, the sliding movement of a bed in the X-axis and Y-axis directions, and the rotational movement of a rotary unit in association with each other. Turning attachment for machinery.