JP5638156B1 - Cursor used for scale - Google Patents

Abstract

A scale scale that incorporates a CPU and switches in a cursor that is movably attached to the scale body, makes the entire scale compact, and is equipped with a measurement completion switch to enable non-contact communication with the outside. I will provide a. A minimum necessary setting switch for a power / enter key, a shift key, and a clear key is incorporated on the upper surface side of a cursor. In the drawing, when measuring the actual dimension of a part not having dimension notation, the dimension of the part having the dimension notation is measured by the fixed jaw 4 and the movable jaw 22 and the indicated dimension is shifted by the shift key 19, Input from 20. Thereby, calculation processing is performed by the CPU, and the scale ratio of the drawing is obtained. Next, the dimension of the part which does not have a dimension description is measured. Actual dimensions are calculated at a scale ratio determined in advance to the measured dimensions, and are digitally displayed on the liquid crystal screen 8. [Selection] Figure 1

Description

The present invention measures the dimensions of parts without dimension notation on drawings with different scale ratios such as design drawings, production drawings, maps, etc., calculates the dimensions at the scale ratio obtained in advance, and displays this. Or electronic scale scale technology that can be output to a portable terminal such as a PC or a smartphone to process the data, and placed on a commercially available electronic caliper and connected with a cable. The present invention relates to a cursor that can be used as a scale scale .

As a device for measuring the length and outer diameter of an article, the inner diameter of a hole, and the like, a caliper having a main scale and a sub-scale is generally known. The caliper reads the scale of the main scale indicated by the zero of the vernier scale, then reads the scale of the vernier that matches the scale of the main scale and the vernier scale as a numerical value after the decimal point, and uses the two readings as measurement dimensions. Yes.
Thus, with calipers, it is necessary for the person to measure to read the scale with his own eyes, and in the case of hurrying, reading errors and transcription errors are likely to occur, and the minimum reading value is 0.05 mm. There was a problem that the dimensional accuracy was rough.

  As a technique for solving the problem related to reading errors and dimensional accuracy, an electronic (digital) caliper technique including an electronic display such as a liquid crystal is known. However, with this electronic (digital) caliper, the measured dimensions are displayed digitally, the basic function is the same as the conventional calipers, and the dimensions are measured when the scale ratio is different on the drawing etc. I couldn't.

On the other hand, a triangular scale is known as a means for knowing the dimensions of a portion having no dimension notation on drawings having different scale ratios such as a design drawing, a production drawing, and a map. The triangle scale has scales with different scale ratios on the upper and lower edges of each surface, and measures the dimensions using the same scale surface as the scale ratio in the design drawing etc., and reads the dimensions. . In such a method, it is necessary to make a note of or memorize the read dimensions, and it is a troublesome work if there are many places where there is no dimension notation.

In addition, when using a ruler such as a triangle scale, it is necessary to prepare a ruler with the same ratio as the scale ratio in the design drawings. If there is no ruler with the same scale ratio, the dimension measured each time is reduced to the scale on the drawing. The actual dimensions are obtained by recalculating the ratio.
In such a method, if there are a lot of portions without dimension notations, a great amount of labor is required, work efficiency is poor, and the burden on the operator is large.

  Therefore, conventionally, a jig for measuring numerical values not shown in the drawings and the like and displaying numerical values as shown in Patent Document 1 has been developed. In the technique of Patent Document 1, for example, when length measurement on a drawing is performed, a length having a notation of an actual dimension on the drawing is used as a reference interval. Then, the slide gauge is aligned with the length position, and the scale that matches the scale of the drawing is set by the setting means by inputting the actual dimensions described above from the input means. . Thereafter, an unwritten part is measured based on the set scale, and an actual dimension is calculated and displayed.

JP 2001-183130 A

However, in the technique disclosed in Patent Document 1, an operation unit that performs display and input is fixed to the right end of the scale body, and the input method is also a numeric keypad method. For this reason, the scale main body is dimensionally increased by the operation portion, and there is a problem that it is difficult to handle on the drawing. Moreover, after placing the left side area of the scale body on the drawing and measuring the dimensions, it is necessary to check the numerical value displayed on the display section of the operation section located at the right end, and the face and eyes are moved greatly. There is a problem that it is troublesome because it cannot be seen without it.

In addition, the number of keys increases in the numeric keypad method, and if other keys such as the power switch, enter key, and clear key are included, a considerable number of keys and switches must be concentrated in the operation unit, which is physically small. It was difficult to do. The problem of the large number of keys is also an element that inevitably increases the overall dimensions of the scale body.

Furthermore, in the technique of Patent Document 1, when the measurement on the drawing is performed by moving the slide gauge (cursor) in the area on the left side of the scale body, it is not possible to know when the measurement is completed. . Therefore, on the software program, when the predetermined time has elapsed since the movement of the slide gauge is stopped, it is determined that the measurement is completed, and the actual size is calculated by calculating at a predetermined scale ratio. In this case, there is a time lag of several seconds, which is a burden on the worker and causes the entire work time to become long.

In addition, in the technique of this Patent Document 1, data processing after calculating the dimensions of a portion where dimensions are not described at a predetermined scale ratio cannot be performed, and an operator must record them manually. did not become. That is, the technique of Patent Document 1 cannot effectively use data.

The present invention is an improvement and removal in view of the above-mentioned problems of the prior art, and incorporates a CPU and switches into a cursor that is movably attached to the scale body, making the overall scale compact , It is also possible to provide a scale scale function by placing it on a commercially available electronic caliper and connecting it with a cable .

The means of claim 1 employed by the present invention to solve the above problems is a scale scale cursor having four modes of a standby mode, a scale automatic setting mode, a scale manual setting mode, and a measurement mode. A cursor body formed in a box shape, a CPU incorporated in the cursor body, and a scale operation / display unit. The CPU includes a control circuit, an arithmetic circuit, a storage circuit, and a timer circuit. The operation / display section is a digital display of dimensions, a power supply / enter key for turning the power ON / OFF and confirming the input, an up / down shift key for inputting a numerical value of the scale ratio, a shift to the automatic scale setting mode and the upper digit scale automatic setting key for moving to the scale manually setting key for moving to the migration and lower digits to the scale manual configuration mode, you and a clear key to cancel the setting The cursor body is placed on the cursor of a commercially available electronic caliper, the CPU is connected to an electronic caliper CPU incorporated in the electronic caliper cursor, and the position signal from the electronic caliper position detection sensor is transmitted to the electronic caliper. This is a scale scale cursor that is input from the CPU to the CPU .

According to the first aspect of the present invention, since the cursor incorporates means for detecting a relative position change with respect to the scale body (for example, an electromagnetic electromotive force sensor of an electromagnetic dielectric type), the cursor is moved. Then, the dimension between the fixed jaw of the scale main body and the movable jaw of the cursor can be automatically measured in units of 0.01 mm and digitally displayed on the liquid crystal screen of the display unit.
On the top side of the cursor, the minimum necessary setting switches for power / enter key, shift key (up / down / left / right shift) and clear key are incorporated. With this number of keys, it is possible to place the cursor together with the liquid crystal screen on a cursor having a size of 4 cm × 5 cm.

  In the case of measuring the actual dimensions of a portion having no dimension notation on the drawing, first, the scale ratio on the drawing is obtained. The scale ratio is measured by measuring the dimension of the part where the dimension is indicated with the fixed jaw and the movable jaw, and inputting the indicated dimension from the shift key. Thereby, calculation processing is performed by the CPU, and the scale ratio of the drawing is obtained. After that, it is only necessary to measure the size of the portion not having the dimension notation, and the actual size is calculated with the scale ratio obtained in advance to the measured size and is digitally displayed on the liquid crystal screen.

Thus, the cursor of the present invention can be placed on a commercially available electronic caliper cursor and function as a scale. Specifically, the position detection signal output from the electronic caliper cursor is taken in, and the scale is calculated based on the input numerical value, or the dimension of the part where the dimension is not displayed is calculated and displayed. be able to.

It is the scale scale which concerns on this invention, A figure (A) is a top view, A figure (B) is a front view. FIG. 3 is a block circuit diagram in a case where communication with the outside is enabled by the scale-scale RFID according to the present invention . It is a flowchart figure of the standby mode of the reduced scale which concerns on this invention . It is a flowchart figure of the scale automatic setting mode of the scale according to the present invention . It is a flowchart figure of the scale manual setting mode of the scale according to the present invention . It is a flowchart figure of the measurement mode of the reduced scale which concerns on this invention . FIG. 3 is a block circuit diagram in a case where communication with the outside is possible using Bluetooth (registered trademark) of a scale according to the present invention . FIG. 1 shows a scale according to the present invention . FIG. (A) is a plan view, (B) is a front view, (C) is a right side view, and (D) is a cursor portion of a conventional electronic caliper. FIG.

The configuration of the present invention will be described below based on the scale 1 according to the first embodiment shown in FIG. As shown in the figure, the scale 1 includes a long scale body 2 having a width of 30 mm and a length of 360 mm, and a cursor 3 slidably fitted on the scale body 2. A fixed jaw 4 is attached to the left end side of the scale body 2, and a stopper 5 for preventing the cursor 3 from being detached is attached to the right end side. A scale 6 is attached to the upper end edge of the scale body 2 in the longitudinal direction over 300 mm, and an electromagnetic dielectric (not shown) is embedded corresponding to the scale 9.
In FIG. 1, reference numeral 3A denotes a roller for fine adjustment of the cursor position. The roller 3 </ b> A is disposed to face both sides of the scale body 2 and is normally free from the scale body 2. By pressing the inner surface side of the roller 2 against the scale body 2 and turning it, the cursor 3 is moved slightly to finely adjust its position.

  As shown in the block diagram of FIG. 2, a CPU (Central Processing Unit) 7 is incorporated in the cursor 3, and a digital display unit 8 that displays seven digits in a liquid crystal system on the upper surface side of the cursor 3 A setting switch group 9 is provided. The CPU 7 includes a control circuit unit 10, an arithmetic circuit unit 11, a storage circuit unit 12, a timer 13, and an IC tag 14 for RFID communication. The setting switch group 9 includes a power / enter key 15, a clear key 16, a scale automatic setting key 17, a scale manual setting key 18, an up shift key 19, and a down shift key 20.

  Further, a position detection sensor 21 for detecting a change in electromotive force of an electromagnetic dielectric embedded in the scale body 2 corresponding to the scale 9 is provided on the surface portion of the cursor 3 facing the scale body 2 (see the block diagram of FIG. 2). ) Is incorporated.

Furthermore, a movable jaw 22 corresponding to the fixed jaw 4 of the scale body 2 is attached to the upper left side of the cursor 3. The movable jaw 22 is provided with a measurement completion switch 23 that is pressed when the measurement is completed. The reason why the measurement completion switch 23 is provided on the movable jaw 22 is that the measurement operator presses the left end of the scale body 2 placed on the drawing with the left hand, puts the thumb of the right hand on the lower edge of the cursor 3, the middle finger and the ring finger Grab the top edge of the cursor 3 with the three little fingers and move the cursor 3 to measure. In this case, the free finger is only the index finger, and the area of the movable jaw 22 is a range that can be pressed by the index finger immediately after the measurement is completed. In this way, the switch 23 is arranged at a position where it can be operated with ease when the measurement is completed ergonomically.

  In the block diagram of FIG. 2, reference numeral 24 denotes an RFID reader / writer for communicating information with the IC tag 14 in the cursor 3. Information written in the IC tag 14 is output to a portable terminal 25 such as a PC or a smartphone through the RFID reader / writer 24.

  Next, the operation mode of the scale 1 according to the present embodiment will be described based on the flowcharts of FIGS. 3 to 6. As shown in FIG. 3, the mode of the scale 1 includes four modes: a standby mode, a scale automatic setting mode, a scale manual setting mode, and a measurement mode. FIG. 3 shows a standby mode, which is activated by pressing and holding the power / enter key 15. If the power source / enter key is pressed from the start-up state, the mode is shifted to the measurement mode in which measurement is started continuously from the last display value at the previous measurement. This is a measurement mode used when the work is temporarily suspended and then resumed.

When the clear key is pressed from the start-up state, it returns to zero and shifts to a measurement mode in which measurement is started with the current position as the origin.
When the scale automatic setting key is pressed from the start-up state, the scale shifts to the scale automatic setting mode shown in FIG. 4, and when the scale manual setting key is pressed, the scale shifts to the manual scale setting mode shown in FIG. .

  In the scale automatic setting mode shown in FIG. 4, after the scale automatic setting key 17 is pressed for a long time, the dimension displayed on the drawing as the denominator is input. In order to input a numerical value, a digit to be input on the digital display unit 8 is selected, and a number is selected using the upper and lower shift keys 19 and 20. The digit is moved by using a scale automatic setting key (move to upper digit) 17 or a scale manual setting key (move to lower digit) 18. When the input of numerical values is completed, press the power / enter key 15 to confirm. Next, the dimension to be a molecule is measured from the drawing. The measurement is performed by moving the cursor 3 and measuring the dimension between the fixed jaw 4 and the movable jaw 22. If the measured value is incorrect, the clear key 16 is pressed to return to the drawing dimension input stage, and the denominator drawing dimension is input again.

If the value measured from the drawing as a numerator is OK, the value is determined by the power / enter key 15. Thereby, the arithmetic circuit unit 11 calculates the scale ratio from the input denominator and numerator, and displays this. If the value is OK, it is determined by the power / enter key 15 and shifts to the measurement mode. Thereby, the scale ratio on the drawing is automatically determined.

  In the scale manual setting mode shown in FIG. 5, after the scale manual setting key 18 is pressed long, a numerical value as a denominator is input. Numeric input is the same as in the scale automatic setting mode. When the input of numerical values is completed, press the power / enter key 15 to confirm. Next, enter the numerical value that will be the molecule. If there is an error in the input numerical value, the clear key 16 is pressed to return to the molecular input stage, and the numerical value for the molecule is input again. If the numerical value to be a numerator is OK, it is determined by the power / enter key 15. Thereby, the arithmetic circuit unit 11 calculates the scale ratio from the input denominator and numerator, and displays this. If the value is OK, it is determined by the power / enter key 15 and shifts to the measurement mode. Thereby, the scale ratio on the drawing is manually determined.

  The measurement mode is as shown in FIG. 6, and the dimension on the drawing is measured between the fixed jaw 5 and the movable jaw 22 by moving the cursor 3. Then, an actual dimension is calculated by multiplying this measured dimension by the scale ratio set in the scale automatic setting mode or the scale manual setting mode, and displayed on the digital display unit 8 as a number.

  On the other hand, the measured dimensions are written in the IC tag 14 shown in FIG. 2, and are output to the RFID reader / writer 24 in a non-contact manner by an electromagnetic wave or the like, and further taken into a portable terminal 25 such as a PC or a smartphone to obtain data. Can be processed. Examples of data processing include calculating area, volume, arc length, and specific gravity, performing normal addition, subtraction, multiplication, division, and referring to previous data.

In addition, as shown in FIG. 7, an external output method of data from the CPU in the cursor 3 includes a Bluetooth (registered trademark) slave unit 26 built in the cursor 3, and a Bluetooth (registered trademark) compatible PC or the like. You may make it perform by wireless communication between portable terminals 25 grade | etc., Such as a smart phone.
Furthermore, it is possible to connect the cursor 3 to the PC 25 or the like via the USB terminal 27 and directly output data externally.

The timer 13 shown in the block circuit diagram of FIG. 2 is for forcibly terminating the operation when the no-operation state for one minute continues. In this case, the current scale and display value are automatically stored in the storage circuit unit 12. In addition, when the power / enter key 15 is pressed for a long time during any operation, it is set to return to the standby mode. Also in this case, the current scale and display value are automatically saved in the storage circuit unit 12.

By the way, the digital display unit 8 uses a 7-segment LCD which is generally widely used. On the display unit 8, five types of dimension units of nm, μm, mm, m, and km are displayed at the same time. The unit can be selected by manually operating the scale automatic setting key (moving to the higher unit) 17 or the scale manual setting key (moving to the lower unit) 18 when inputting a number, and moving the cursor 3. There are two methods for automatically shifting to a higher unit because the number of digits in the digital display section is insufficient when the number is displayed.

FIG. 8 relates to the present invention . In this embodiment, the cursor 3 of FIG. 1, is mounted to the electronic caliper 31 which is commercially available is shown in figure FIG. 8 (D), a by incorporating a position detection signal of the electronic caliper 31 to cursor 3, commercial Electronic calipers are converted to scales. The commercially available electronic caliper 31 moves the cursor 32 to change the electromotive force of the electromagnetic derivative embedded in the scale body 2 as shown in FIG. The sensor detects and measures the dimensions. A commercially available electronic caliper 31 is provided with a cable output terminal 33 so that the measured dimension data can be output to a PC or the like, and can be recorded and stored or processed for the purpose.
A commercially available electronic caliper 31 shown in FIG. 8 includes a fixed jaw (scale body 2 side) 36 and a movable jaw (cursor 32 side) 37 that measure the outside of the measurement object, and a fixed that measures the inside of the measurement object. It has a jaw (scale body side) 38 and a movable jaw (cursor 32 side) 39. A roller 32A for finely adjusting the position of the cursor 32 is also attached.

In this embodiment , as shown in FIG. 8A to FIG. 8C, an object having basically the same structure as the cursor 3 in FIG. 1 is placed on the cursor 32 of the commercially available electronic caliper 31. The input / output terminals 33 and 34 of both cursors are connected by a cable 35. Thereby, it is possible to use a commercially available electronic caliper 31 as a scale. Specifically, first, the dimensions of the places where the dimensions are indicated on the drawing are measured with a commercially available electronic caliper 31, and the indicated dimensions are input from the shift key 9. Thereby, the arithmetic processing is performed by the CPU 7 in the cursor 3, and the scale ratio of the drawing is obtained. After that, it is only necessary to measure the size of the portion not having the dimension notation and multiply the measured size by the scale ratio obtained previously to calculate the actual size. The actual dimensions are digitally displayed on the liquid crystal screen.

  By the way, this invention is not limited to embodiment mentioned above, A suitable change is possible. For example, the existing electronic caliper can be changed to a jig having a scale function by simply replacing the cursor 3 with an existing one. It is also possible to place the cursor 3 on an electronic scale having the same function as the electronic caliper and convert it to a scale.

DESCRIPTION OF SYMBOLS 1 ... Scale scale 2 ... Scale main body 3 ... Cursor 4 ... Fixed jaw 7 ... CPU
DESCRIPTION OF SYMBOLS 8 ... Digital display part 9 ... Setting switch group 10 ... Control circuit part 11 ... Arithmetic circuit part 12 ... Memory circuit part 13 ... Timer 14 ... IC tag 15 ... Power supply / enter key 16 ... Clear key 17 ... Scale automatic setting key 18 ... Scale manual setting key 19 ... Up shift key 20 ... Down shift key 24 ... RFID reader / writer 25 ... Portable terminal 26 such as PC or smartphone ... Bluetooth (registered trademark) slave unit

Claims (1)

A cursor for a scale that has four modes: a standby mode, an automatic scale setting mode, a manual scale setting mode, and a measurement mode. The cursor body is formed in a box shape, and is incorporated in the cursor body. The CPU includes a scale operation / display unit, and the CPU includes a control circuit, a calculation circuit, a storage circuit, and a timer circuit. The scale operation / display unit includes a display unit for digitally displaying dimensions, power ON / OFF, Power / Enter key to confirm the input, Up / Down shift key to input the numerical value of the scale ratio, Scale automatic setting key to move to the automatic scale setting mode and move to the upper digit, Shift to the manual scale setting mode and lower scale manual settings key to move to the digit, has a clear key to cancel the setting, the cursor body is placed on the cursor of the electronic caliper of commercially available Is, CPU is an electronic caliper CPU and cabling incorporated into the cursor electronic caliper, a scale-scale position signal from the position detection sensor of the electronic caliper is adapted to be inputted from electronic caliper CPU to the CPU Cursor.

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