JPH071216A - Crank shaft mirror - Google Patents

Abstract

PURPOSE:To provide a crank shaft mirror for enabling the longitudinal dividing of a work head by making use of a cutter unit. CONSTITUTION:A pair of work heads 2 wherein one side is fixed and the other side can be freely moved in the work longitudinal direction are provided on a bed 1, a cutter unit 4 capable of being moved in the work longitudinal direction by a driving motor 5 is provided between these work heads 2, and a pressing pad 15 for pressing and moving the work heads 2 and a connecting mechanism 12 for pulling and moving it are provided between the work heads 2 and the cutter unit 4 so as to be freely separated from each other. And, any driving means is not required to be provided on the work heads 2 because the longitudinal dividing of the work heads 2 can be performed by making use of the cutter unit 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crankshaft mirror for processing a crankshaft of an engine or the like.

[0002]

2. Description of the Related Art Conventionally, a crankshaft mirror for processing a crankshaft is provided with a pair of work heads for supporting both ends of a work. One of these work heads is fixed to the bed, and the other one can be moved and adjusted according to the length of the work.In the case of a crankshaft mirror that rarely moves and adjusts, the work head is moved by the manual handle. The movement is adjusted (longitudinal indexing) according to the length of the workhead. However, in the crankshaft mirror where the frequency of longitudinal indexing is high, the work head is moved and adjusted by a hydraulic cylinder or an NC servomotor.

[0003]

However, in the case where the work head is moved by a driving means such as a hydraulic cylinder or a servomotor like the conventional crankshaft mirror, the driving means is installed on the crankshaft mirror. Since the space is small, it is very difficult to install, and since the drive means is often installed at the rear part of the bed, there is no maintenance space between the bed and the mechanical guard, which may interfere with maintenance. There was a problem. The present invention has been made in order to improve such a problem, and an object of the present invention is to provide a crankshaft mirror capable of longitudinally indexing a work head without the need for driving means.

[0004]

To achieve the above object, the present invention provides a pair of work heads, one of which is fixed and the other of which is movable in the longitudinal direction of a work, on a bed. A cutter unit that is movable in the longitudinal direction of the work by a drive motor is provided therebetween, and a pressing pad for pressing and moving the work head between the work head and the cutter unit, and a connecting mechanism for pulling and moving the work head. It can be freely separated.

[0005]

[Operation] Since the work head can be longitudinally indexed by using the cutter unit with the above configuration, the drive means is not required because the work head is moved.

[0006]

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a bed of a crankshaft mirror, on which a pair of work heads 2 are installed. One of these work heads 2 is the bed 1
It is fixed on the upper side and the other side is provided so as to be movable in the longitudinal direction of the bed 1, and chucks 3 for clamping both ends of a work (not shown) are provided on the facing surfaces of these work heads 2.

Reference numeral 4 in FIG. 1 denotes two cutter units,
It is provided on the bed 1 between the work heads 2 so as to be movable in the longitudinal direction of the bed. These cutter units 4 are
A drive motor 5 composed of a servomotor provided at both ends of the bed 1 has a saddle 7 which is movable via a ball screw shaft 6 and is moved on the saddle 7 in a direction orthogonal to the bed 1. A cutter drum 1 in which slides 8 are provided, swing heads 9 swingable in the vertical direction are attached to the slides 8, and a cutter 10a for processing a workpiece is attached to the swing heads 9.
0 is rotatably provided. Reference numeral 11 in the drawing denotes a work rest that supports the work being processed, and is provided on the saddle 7 of each cutter unit 4.

On the other hand, a pressing pad 15 and a connecting mechanism 12 are provided on the facing surface of the movable work head 2 and the one cutter unit 4 adjacent thereto, as shown in FIG. The pressing pads 15 are provided on the work head 2 and the saddle 7 of the cutter unit 4, respectively, and are used when the work unit 2 is pushed and moved by the cutter unit 4. The connecting mechanism 12 is used when the work unit 2 is pulled and moved by the cutter unit 4, and is configured as shown in FIGS. 3 and 4.

That is, the coupling claw 12 is provided on the work head 2 side.
a, and the saddle 7 on the cutter unit 4 side is provided with an engaging member 12b with which the coupling claw 12a is engaged.
The coupling claws 12a are provided at two places on a rotary shaft 12d that is rotatably supported by a bearing 12c in a direction orthogonal to the moving direction of the work head 2, and the rotary shaft 12 is also provided.
The base end of the lever 12e is fixed to one end of d. A piston rod 13a of a drive cylinder 13 provided on the work head 2 is connected to the tip of the lever 12e. By rotating the rotary shaft 12d by the drive cylinder 13, the coupling claw 12a is centered on the rotary shaft 12d. The hook 12f formed at the tip of the coupling claw 12d
Engages with the notch 12g of the engaging member 12b from below. Reference numeral 16 in the drawing denotes a clamp mechanism for fixing the work head to the bed 1.

Next, the operation will be described. When one of the work heads 2 is longitudinally indexed according to the length of the work,
When the work heads 2 move in the directions away from each other,
The moving work head 2 and the adjacent cutter unit 4 are moved by the drive motor 5 so that the pressing pad 15b of the cutter unit 4 and the pressing pad 15a of the work head 2 are brought into contact with each other, and in this state, the work is performed by the cutter unit 4. While pressing the head 2, longitudinal indexing is performed.

When the work heads 2 are moved toward each other, the coupling claw 12a of the coupling mechanism 12 is rotated by the drive cylinder 13 while the pressing pads 15a and 15b are in contact with each other. The coupling claw 12a is attached to the engaging member 12
engage b. Then, in this state, the cutter unit 4 is moved by the drive motor 5 and the work head 2 is longitudinally indexed. After the lengthwise indexing, the cutter head 4 can be lengthwisely indexed by separating the connecting mechanism 12. After the longitudinal indexing of the work head 2, the work head 2 is fixed to the bed 1 by the clamp mechanism 16.

[0012]

As described above in detail, according to the present invention, since the work head is longitudinally indexed by using the cutter unit, the driving means for moving the work head as in the prior art is unnecessary. Becomes Since this does not require a space for providing the driving means, designing and manufacturing are facilitated, and since there is no driving means in the bed, chips can be discharged smoothly.

[Brief description of drawings]

FIG. 1 is a front view of a crankshaft mirror according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a circle A in FIG.

FIG. 3 is a detailed view of a connecting mechanism provided on the crankshaft mirror according to the embodiment of the present invention.

FIG. 4 is a view from the direction B in FIG.

[Explanation of symbols]

1 ... Bed, 2 ... Work head, 4 ... Cutter unit,
5 ... Drive motor, 12 ... Connection mechanism, 15 ... Press pad.

Claims (1)

[Claims] 1. A pair of work heads, one of which is fixed and the other of which is movable in the longitudinal direction of a work, is provided on a bed 1, and a drive motor 5 is provided between the work heads 2 in the longitudinal direction of the work. A movable cutter unit 4 is provided, and the work head 2 and the cutter unit 4 are also provided.
A crankshaft mirror in which a pressing pad 15 for pushing and moving the work head 2 and a connecting mechanism 12 for pulling and moving the work head 2 are detachably provided therebetween.