JPS6014373B2 - Automatic offset device for automatic drafting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has been made in order to improve the work efficiency of an operator when replacing and replenishing writing utensils for drawing in an automatic drawing machine.

Conventionally, in automatic drawing machines, especially large automatic drafting machines, when it becomes necessary to replace or replenish writing instruments such as pens and pencils during automatic drawing, drawing is temporarily stopped and the writing instrument is loaded. The operator can get up on the drafting table and perform work such as replacing the pen head without moving the position of the pen head, or the position of the temporary stop point displayed on the current value counter of the pen head can be memorized and the operator can then work on it. Manually move the pen head carrying the writing instrument to a convenient location, and after completing tasks such as replacement and supplementary notes, return to the previously memorized pause point while checking the current value counter.
Drawing continued after restarting.

The present invention was made to eliminate such complexity. Even if the machine is temporarily stopped in the middle of drawing, and then the operator moves the pen head to an arbitrary location, the pen head will automatically return to the pause point when restarted. This invention relates to an automatic drawing machine that is provided with a function to resume drawing and continue drawing, and one embodiment thereof will be described below.

Generally, automatic drawing machines are equipped with a pen head that moves on parallel x and Y planes according to commands from a control device during drawing; It moves up and down with respect to the drawing surface on the table, draws when brought into contact with the drawing surface, and does not draw at 0 when lifted from the drawing surface.

FIG. 1 shows the x, y of the pen head in one embodiment of the present invention.
FIG. 3 is a diagram showing a locus on a plane.

1 shown by a solid line is the trajectory of the pen head during automatic drawing before stopping, point A with coordinates (x,, y,) is the temporary stopping point, and 2 shown by a broken line is the trajectory of the pen head during automatic drawing before stopping. This shows the trajectory of the pen head manually moved to work point B, which has coordinates (x2, y2) where operations such as replacement and replenishment can be easily performed.Although it is shown as a straight line in the x and Y directions in the figure, it is actually It can be any shape and there is no problem. 3 indicated by a dashed-dotted line is the trajectory in which the pen head automatically returns to the stopping point A after the operator completes work such as replacing or replenishing writing utensils, and this is also shown as a straight line, but it is not necessarily a straight line. do not have. 4 indicated by a solid line is the trajectory of the pen head after restarting automatic drawing. FIG. 2 is a block diagram of an embodiment of the offset device of the automatic drafting machine of the present invention, and 5 and 6 count the amount of movement in ten directions and one direction on the X-axis and Y-axis, respectively, and calculate the current value. This is a reversible counter, which always indicates the current coordinate position of the pen head moving on the x,y plane.

If, for some reason, the operator recognizes the need to replace or replenish writing utensils during automatic drawing according to trajectory 1, once a command to stop is given to the automatic offset device using a pushbutton switch (not shown), the automatic The drawing machine stops automatic drawing, the Ben head stops at point A (x, y.), and the writing utensil is pulled up and away from the drawing surface. At this time, the contents x and y of the reversible counters 5 and 6 are respectively stored in the storage circuit and 8.
is stored in The operator can manually move the pen head according to trajectory 2 to the point 8 (uniform, uniform) where it is easy to work, and perform tasks such as replacing and replenishing writing utensils, but at this time, the contents of the reversible counters 5 and 6 x2 and yen are stored in storage circuits 9 and 10, respectively.

When a restart command is given to the automatic offset device using a pushbutton switch or the like (not shown), the difference between the contents of the memory circuits 7 and 9 (x, - y2) and the difference between the contents of the memory circuits 8 and 10 (y, 1) by registers 11 and 12, respectively, and automatically return to the stopping point A by moving the pen head in the x direction and Y axis direction according to those values, and then continue automatic drawing from point A. do.

[Brief explanation of the drawing]

FIG. 1 shows the X and Y points of the pen head in one embodiment of the present invention.
FIG. 2, which is a diagram showing a locus on a plane, is a block diagram of an embodiment of an offset device for an automatic drafting machine according to the present invention. 1, 2, 3, 4..., Benhead's trajectory, 5, 6
... Reversible Ucanta, 7, 8, 9, 10... Memory circuit, 11, 12... Register. Multi-plot Grandson Etsu

Claims (1)

[Claims] 1. In an automatic drawing machine equipped with a pen head equipped with a writing instrument, a reversible counter for both X and Y coordinates,
The pen head is provided with first and second memory circuits for both coordinates and registers for both coordinates, and allows the pen head to be temporarily stopped at an arbitrary position when a writing instrument needs to be replaced or replenished during automatic drawing. to store the contents of the reversible ucanter in the first storage circuit, and then move the pen head carrying the writing instrument to any location most convenient for the operator to store the contents of the reversible ucanter in the second storage circuit. By storing the pen head and restarting it after replacing or replenishing the writing implement, the contents of the first and second memory circuits are calculated by the register, and the pen head automatically returns to the above-mentioned temporary stop point and starts automatic drawing. An automatic offset device for an automatic drafting machine with a continuation function.