JPS6228200A - Automatic notching device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an apparatus which is particularly suitable for making barrel notches in a workpiece cutting system using lateral pressure, which is a method for lateral machining of workpieces.

This (lllllllll pressure cutter system, notch processing,
Force 1' A special diamond indenter with a tip chain angle is pressed against the workpiece with a constant load. Does it have a big impact on the reliability of cutting? have. This invention relates to an automatic notching device with higher precision and reliability.

(Prior Art) Conventional notching was carried out manually by attaching a special diamond indenter to a micro-Vickers hardness tester. Originally, the Micro Vickers hardness tester was
Diamond indenter with a diamond-shaped tip The purpose of pressing is to damage the measured object, so the pressing load is quantitative, and even if it is changed, the amount of change is large, and the shape of the diamond indenter is diamond-shaped. Because of this, it is difficult to adjust the direction of the indenter relative to the object to be measured, and because the object to be measured is often metal, it is difficult to adjust the load and speed conditions when the indenter touches and leaves the object to be measured. cannot be adjusted,
Between such things: There was a su. In notch machining with force and lateral pressure cutting systems, the workpiece is usually a round bar with a variety of sizes and materials, so the load needs to be small and change sound. Since the cutting shape follows the shape of the notch, precision in the direction and angle of the indenter is required, and the properties of the workpiece vary widely, and depending on the object, when it hits and leaves the workpiece, it is necessary to cut as much as possible. It is necessary to meet requirements such as the need for shockless processing.

The above specifications were not possible with a micro Vickers hardness tester, and could not be incorporated into an automated mano.

(Problems to be Solved by the Invention) The purpose of the present invention is to be able to make a notch with high inclination accuracy in the direction (Y!111) that intersects the axial direction (X-axis) of the workpiece, and to make a notch in the vertical direction (Z@111). ) To provide an automatic notching device capable of notching with high inclination accuracy, fully precise notching pressing force, and fully adjustable impact at the time of collision.

(Means for Solving the Interval 1jR Point) Therefore, the present invention provides an automatic notching device capable of continuously notching a workpiece, including a notching indenter made of an ultra-hard material, and the indenter? an I'ic shaft; a slide bearing that supports the shaft so that it cannot fully rotate but is movable in the axial direction; 1': a housing that supports the slide bearing in an appropriate position; and a base that fully supports it; a rotary slide device inserted between the housing and the base to adjust the rotation angle of the shaft; and a drive device that automatically reciprocates the entire shaft so that its pressing force can be finely adjusted. This is an automatic notching device including:

(Function and Effect) According to this configuration, the shaft is guided by the slide bearing in this automatic notching device, so it can achieve high 1/'1 accuracy with respect to the set inclination in both the Y-axis direction and the Z-axis direction. Hold all.

Furthermore, the shaft can be tilted with high precision in the Y-axis direction using a rotating slide device, and the drive device allows for fine adjustment of the entire notching force. The impact can be adjusted precisely and in the event of a collision.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings.
The figure shows a weight-type automatic notching device driven by a cam. A diamond indenter (2), which is a notching indenter made of ultra-hard material (or cubic boron nitride, etc.), is connected to a shaft by a coupling (3). (4) Attached to the tip. The shaft (4) is perpendicular to the workpiece (1) by a slide bearing (7), and a housing (5I) and a housing (5') that completely fix the slide bearing (7).
' is held by a base (5) that supports it. The base (5) is connected to the base (5) via an X-Y table (not shown).
It is adapted to be positioned in place and continuously with respect to the workpiece (1). The shaft (4) moves smoothly in the axial direction, that is, in the vertical direction as seen in the figure, but the direction of rotation is regulated by the ball (7°) K of the slide bearing (7). The weight (8) on the upper part of the shaft (4) can be freely attached and detached, and the pressing load can be finely adjusted according to the specifications of the workpiece.

Furthermore, the shaft (4) is connected to the arm α by the wire (9).
is supported by Arm q〃 is driven by a speed control motor (not shown). It is driven upwards and downwards by hitting the eccentric cam.

The arm qv is now in contact with the P1 point of the eccentric cam αQ, and the diamond indenter (2) is at the rising end, but when the speed control motor is rotated fully, the contact point between the arm circle and the eccentric cam α0 will be from P27)) to P3. By shifting, the diamond indenter (2) descends in a sine curve. Diamond indenter (2) and workpiece (at the rising end)
The interval 1) is set to be less than the lift amount by the eccentric cam αO by the notch depth + α. For this reason, the diamond indenter (2) touches the workpiece (1) a little before the P3 point.
corresponds to At the P3 point, the arm αV further descends, but the wire (9) becomes slack and the shaft (4) and weight (
8) is applied to the diamond indenter (2), and the workpiece (
Insert the diamond indenter (2) into 1).

When the contact moves from P3 to P4, the arm μ rises and the diamond indenter (2) separates from the workpiece (1).
Notching is completed at P1 point.

In this embodiment, since the pressing load of the diamond indenter (2) is determined by the weight of the shaft (4) and the weight (8), the load can be directly read by the combination of the weights (8).

And the load conditions are stable. Also, a diamond indenter (2
) is a sine curve, and by fully adjusting the rotation speed of the speed control motor, the speed conditions when hitting the workpiece (1) can be fully adjusted. The rotating slide (6) rotates the diamond indenter (2) and the shirt (41) interposed between the base (5) and the Ujifugu (5") so that the longitudinal direction of the notch is perpendicular to the workpiece (1). You can make fine adjustments to suit your needs.

FIG. 4 shows an air cylinder driven automatic notching device according to a second embodiment of the present invention. Here, the installation of the diamond indenter (2) and the bolding method of the shaft (4) are shown in the first example.
Same as the one in the figure, but the shaft (4) has a low sliding air/ring (11°) with a coupling (1o').
The spring (9°) is connected to the rod □□□ when there is no pressure in the low sliding air cylinder (11').
The diamond indenter (2) is at the rising end.

When the air solenoid valve 02 is energized, the air pressure passes through the solenoid Vα3, is regulated by the low pressure reducing valve indicated by →, and is guided to the low sliding air cylinder.

The low pressure reducing valve (14) overcomes the spring (9') and completely lowers the diamond indenter (2). After the diamond indenter (2) hits the workpiece (1) K, the solenoid valve α9 is energized and air pressure is supplied from the precision pressure reducing valve α.

The pressing load at this time is determined by the following formula.

Pressing load (Kp); FW = AHX PH-F
EI + W where AH is the low sliding cylinder (11')
area (J, PH is the set pressure of precision pressure reducing valve α9 ('
yj7cJ), FS is the force of the spring (9')
) and W is the dead weight (Kri) applied to the shaft (4).

When the pressing is completed and the solenoid valve (12) is demagnetized, the air pressure passes through the throttle valve Oe and slowly decreases, causing the spring (
9'') When the force starts to prevail, the diamond indenter (2) slowly separates from the workpiece (1) and the notching is completed at the rising end.

In this embodiment, since the pressing load is determined by the set pressure of the precision pressure reducing valve 0, continuous load conditions can be selected. Furthermore, by making the precision pressure reducing valve α5' an electromagnetic proportional type, it is also possible to control the time for the load to rise and fall. When lowering the low sliding air cylinder (11), the low pressure reducing valve (1
By cents on the lowest value descending to a set of 41,
The shock when hitting the workpiece (1) can be minimized, making it possible to perform notch machining under static load conditions.

FIG. 6 shows an automatic notching device driven by five electromagnetic coils, which is a third embodiment of the present invention. Here again, the method of mounting the diamond indenter (2) and holding the shaft (4) is the same as in Fig. 1, but the upper end of the shaft (4) is attached to the mounting part fixed to the movable core (c) of the electromagnetic coil gn. It is connected to Q℃. The movable iron core - is excited by -F raising coil □□□ and lowering coil 0=l, and is caused to rise or fall. The electromagnetic coil is connected to the housing as a whole (
It is fixed at 5゛). The total weight of the movable iron core (a) and the mounting part (the weight of the two swords, and the weight of the coupling (3) and diamond indenter (2) on the shaft (4) is balanced by the force of the spring (nine forces). In the position shown, the ascending coil (■) is energized and the movable iron core (A) is at the ascending end.At this point, by setting the current in the ascending coil to zero and passing a small current through the descending coil (C), the diamond When the indenter (2) descends and hits the workpiece (1), the amount of current increases slowly.Since the pressing load is approximately proportional to the current value, the pressing load also increases slowly.When pressing is completed, the lowering coil (Ha ) by lowering the current Nk and energizing the rising coil @, the diamond indenter (2) rises.

In this example, the diamond indenter (2) is
The structure is simple and control is easy because the lifting and lowering operations and pressing load can be controlled. Furthermore, since the pressing load and the current value are almost proportional, it is easy to set the load and adjust the increase/decrease time, making it possible to perform notch processing under ideal load conditions.

As detailed above, according to the present invention, the l! lI
The notch can be placed with high accuracy in the direction (Y-axis) that intersects the center direction (X-axis), and the notch can be placed with high tilt accuracy in the vertical direction (Z-axis), so the notch position can be extremely high. Accuracy can be achieved. In addition, we have made it possible to precisely adjust the notch insertion force and the impact at the time of collision.
Since it is possible to insert a notch with an extremely appropriate depth according to the properties of the workpiece (7), when used in a lateral pressure cutting machine, for example, it is possible to insert the notch automatically, and the precision of the cut surface according to the notch is greatly improved without any variation. Since it can be obtained stably, the yield of cut products can also be improved.

[Brief explanation of drawings]

1, 4 and 6 are longitudinal cross-sectional views of automatic notching devices according to different embodiments of the present invention, FIG. 2 is a cross-sectional view of the slide bearing shown in FIG. 1, and FIG. FIGS. 5 and 7 are diagrams showing the operation diagrams of FIGS. 1, 4, and 6, respectively. l... Workpiece 4... Shaft 5... Base 5'... Housing 6... Rotating slide (device) 7... Slide bearing 8...
Weight Ri 9...Wire 10...Eccentric cam (cam device) 11'...Air cylinder 15...Precision pressure reducing valve 2
2...Movable iron core 23, 24...Coil 25
・、1 unit y 30...Electromagnetic coil agent Patent attorney
Jun Kawachi Figure 6 7° Flute.

Claims (5)

[Claims] (1) An automatic notching device capable of continuously notching a workpiece, including a notching indenter made of an ultra-hard material, a shaft with the indenter attached to the tip, and the shaft being non-rotatable but movable in the axial direction. a slide bearing that supports the slide bearing, a housing that supports the slide bearing in place and a base that supports it, a rotary slide device that is inserted between the housing and the base and adjusts the rotation angle of the shaft; A drive device that allows fine adjustment of pressure and automatically reciprocates;
Automatic notching device including. (2) In the device according to claim 1, the drive device is an air cylinder fixed to the housing, whose rod is connected to the shaft, and is supplied with compressed air through a precision pressure reducing valve. Automatic notching device. (3) In the device according to claim 1, the drive device includes a weight removably attached to the shaft, a wire for suspending the shaft to which the weight is attached, and a wire that connects the wire up and down. and an automatic notching device. (4) In the device according to claim 1, the drive device is an automatic notch which is an electromagnetic coil having a coil that connects a movable iron core to the shaft and is fixed to the housing and can vary the pressing force. Putting device. (5) The automatic notching device according to claim 1, wherein the base is positioned with respect to the workpiece via an X-Y table.