JPH037117Y2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application This invention enables efficient, accurate, and highly accurate reading when adjusting the vertical slide amount in a press machine with a simple and rational configuration. This invention relates to a slide amount reading device.

B. Prior Art The upper and lower molds set in the press machine are replaced as needed depending on the required processed product, and the die height needs to be adjusted each time. Adjustment of the die height is achieved by connecting a spherical joint formed at the lower end to the slider in a free manner at approximately the center of the press machine, and screwing the upper part to the lower end of the connecting rod. the adjustment screw,
By inserting an arbitrary tool into the adjustment hole formed on the outer periphery of the adjustment screw and rotating it in either direction using a lever, the length of the threaded part is changed thereby and the slider is slid up and down. It is being done.

By the way, in order to read the slide amount in a conventional press machine, a pointer and a scale plate are provided on the side of the slider so as to correspond to the slider and the frame, respectively, and the scale at the point indicated by the tip of the pointer is read. It was on.

C. Problems to be solved by the invention As mentioned above, in the past, the slide was read using a scale plate provided on the side of the slider, so when the slider was at the top dead center or bottom dead center position. It would be impossible to read without it. Furthermore, since the scale is displayed at a ratio of 1:1 to the actual slide amount, the read value is only a rough guide for this type of slide adjustment that requires high precision. For this reason, skilled workers had to carry out test machining many times to make adjustments. Therefore, the actual situation was that a great deal of time was spent on the adjustment, and the yield was also poor.

D. Means to solve the problem Therefore, the present invention aims to improve reading efficiency and accuracy, shorten adjustment time, and provide uniform products. A helical winding is drawn on the outer periphery of the exposed part of the adjusting screw in a manner that matches the thread pitch of the adjusting screw, while a pointer whose tip indicates one point of the helical winding is fixed to the connecting rod, and The reason lies in the fact that the scale is placed along the helical winding.

E. Effect Since the scale is attached along the helical winding that matches the thread pitch of the screw, the displacement in the sliding direction (vertical) is expanded in the diagonal direction, and the accuracy of the scale is improved by more than an order of magnitude at once. do. Also, since the pitch of the helical winding is the same as the threaded pitch of the screw, when the adjusting screw is turned, the tip of the pointer accurately traces the helical winding, and the slider moves to the top dead center, bottom dead center, or Even in the middle, the amount of slide can be accurately read from the scale provided on the outer periphery of the slide adjustment screw, regardless of the position of the slider.

F. Embodiment The drawing shows a slide adjustment part in a press machine equipped with a slide amount reading device according to the present invention, 1 is equipped with a spherical joint 2 at the bottom,
The slide adjustment screw 1 has a threaded portion 1a formed on the upper side, and the slide adjustment screw 1 has a spherical joint 2.
By freely connecting the threaded portion 1a to the slider 3 and screwing the threaded portion 1a onto the end of the connecting rod 4, it functions as a connecting member between the connecting rod 4 and the slider 3. At the same time, the amount of sliding can be adjusted.
To adjust the sliding amount, for example, insert a turning rod into the adjustment hole 5 formed on the outer periphery of the slide adjustment screw 1, rotate the slide adjustment screw 1 horizontally, and as it rotates, the slide adjustment screw 1 and This utilizes the fact that the length of the threaded connection with the connecting rod 4 changes.

The slide adjustment screw 1 of this embodiment has no threads on the exposed lower part between the connecting rod 4 and the slider 3, and there is a thread on the outer periphery of the unthreaded part at the thread pitch of the adjustment screw. A matched helical winding 6,
A scale is engraved along the helical winding 6.
Further, on the side of the slide adjustment screw 1, there are bolts 7a, 7a whose proximal ends are connected to the side of the connecting rod 4.
A pointer 7 is fixed at the helical winding 6 and has a tip pointing to a point on the helical winding 6, and the slide amount can be changed by rotating the slide adjustment screw 1.
It can be read by the scale on the helical winding indicated by the pointer 7.

The above-mentioned helical winding engraving process is carried out by using a cutting tool 8 whose tip is bent into a hook shape, for example, as shown in FIG. By rotating the slide adjustment screw 1, a helical winding exactly the same as the threaded pitch is engraved. It is also possible to engrave using a platen. For graduation, determine the reference position,
From there, scale lines and numbers are engraved at predetermined intervals as necessary. Incidentally, the slide amount reading device of this embodiment has a slide adjustment screw with a diameter of 100 mm.
The height can be adjusted by 6 mm in one rotation, and each helical winding is divided into 60 equal divisions. Therefore, one scale corresponds to 0.1 mm, and the interval between the scales is approximately 5 mm, so if we take into account that points in between can be read, an accuracy of at least 0.05 mm is ensured. The helical winding and scale are not only attached directly to the slide adjustment screw, but also attached to a cylindrical cover body made of relatively soft metal such as aluminum or copper, or synthetic resin.
It can also be formed into a cylindrical cover body by fitting around the outer periphery of the slide adjustment screw, and the thread pitch, scale interval, etc. can be arbitrarily determined.

G. Effect As described above, according to the device of the present invention, since the thread pitch and the pitch of the helical winding match, the scale provided along the helical winding can be adjusted regardless of the position of the slider. Always matches the slide adjustment amount,
Therefore, the pointer indicates the exact amount of slide. Moreover, the reading of the slide amount satisfies the accuracy required for a press machine, and the adjustment time is greatly shortened, allowing even inexperienced engineers to skip the test machining and perform the main machining. This greatly reduces adjustment time. In addition, there are no differences in precision due to differences in processed products, making it possible to provide products with a high yield, and the present invention brings great benefits.

[Brief explanation of drawings]

FIG. 1 is a front view showing a slide amount reading device according to the present invention, and FIG. 2 is a sectional view showing a slide adjustment section of a press equipped with the reading device.
FIG. 3 is an explanatory diagram showing an example of engraving of helical windings. 1...Slide adjustment screw, 1a...Threaded part, 2
... Spherical joint, 3 ... Slider, 4 ... Connecting rod, 5 ... Adjustment hole, 6 ... Helical winding, 7 ... Pointer, 8 ... Bit.

Claims (1)

[Scope of utility model registration request] On the outer periphery of the exposed part of the sliding amount adjusting screw in the press machine, draw a helical winding that matches the thread pitch of the adjusting screw, and at the same time, draw a pointer on the connecting rod with the tip pointing to a point on the helical winding. 1. A device for reading a sliding amount in a press machine, characterized in that the device is fixedly fixed and further has a scale along the helical winding.