JP2007118342A - Parallel ruler of cutting machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parallel ruler which can accurately position the cutting material guide surface of the ruler in parallel to a cutting edge. <P>SOLUTION: The parallel ruler 10 of a cutting machine 1 which positions the cutting material W in the surface direction of a table 3 in relation to the cutting edge 4 projected from the upper surface of the table 3 loaded with the cutting material W has a ruler support 13 which is moved in parallel in the rotary axis direction of the cutting edge 4 and fixed to the table 3 and a ruler body 14 which is position-adjusted in the table surface direction in relation to the ruler support 13 and fixed. The ruler body 14 has the cutting material guide surface 14a contacting one end part of the cutting material W. A measuring instrument 20 measuring the distance between the cutting material surface 14a and the cutting edge 4 non-contactwise is fitted to the ruler body 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention positions a cutting material in parallel to the saw blade in a cutting machine called a table saw in which the upper portion of a circular saw blade protrudes from the upper surface of a table on which a cutting material (mainly wood) is set. For a parallel ruler.

For example, US Pat. No. 6,606,641 discloses a technique related to a parallel ruler for a table saw. In general, this type of table saw is arranged with the table approximately at the waist height of the operator through a base, and a circular cutting blade is provided in the state where the upper part protrudes from the table upper surface near the center of the table. The parallel ruler is supported by guide rails provided along both ends of the table, and is provided so as to be movable in parallel with a slight gap between the table and the upper surface. The position of the parallel ruler can be fixed at an arbitrary position by rotating the fixing lever.
U.S. Pat.No. 6360641

In the state where the parallel ruler provided in this manner is fixed at an arbitrary position, the parallelism of the cutting material guide surface with respect to the cutting blade is relatively low as the model is mainly low-priced. For this reason, it was difficult to perform an accurate cutting operation.
An object of the present invention is to provide a parallel ruler that can position the cutting member guide surface of the parallel ruler in parallel with high accuracy with respect to the cutting blade, and thereby perform an accurate cutting operation.

In order to solve the above-mentioned problems, the present invention is a parallel ruler of a cutting machine having a configuration as described in each claim.
According to the first aspect of the present invention, the ruler support that is translated in the rotational axis direction of the cutting blade and is fixed to the table, and the ruler that is adjusted and fixed in the table surface direction with respect to the ruler support. The ruler main body has a cutting material guide surface against which one end of the cutting material comes into contact. And the measuring instrument which measures the distance of a cutting material guide surface and a cutting blade in non-contact is attached to the ruler main body.

Therefore, the distance between the cutting material guide surface and the cutting blade can be measured by the measuring instrument, and the position of the ruler body relative to the ruler support can be adjusted based on the measurement result. Therefore, the cutting material guide surface can be accurately parallel to the cutting blade.
Moreover, the measuring instrument is attached to the ruler body and can measure the distance without contact. Therefore, the distance between the cutting material guide surface and the cutting blade can be easily measured by the measuring instrument.

According to invention of Claim 2, a measuring instrument is a measuring instrument which measures distance with a laser beam.
Therefore, since the measuring instrument uses laser light, the distance between the cutting material guide surface and the cutting blade can be measured in a non-contact manner.

According to the invention of claim 3, the measuring instrument is attached to the ruler body so as to be slidable in the longitudinal direction, and the distance between the cutting material guide surface and the cutting blade is set at at least two positions slid. It can be measured.
Therefore, by sliding the measuring instrument with respect to the ruler body, measuring the distance between the cutting material guide surface and the cutting blade at a plurality of positions, and comparing these measured values, the parallelism of the cutting material guide surface with respect to the cutting blade Can be measured. Since the measuring instrument is slidably attached to the ruler body, it can be easily slid to a plurality of desired positions.

According to the fourth aspect of the present invention, the ruler body is attached to the ruler support so as to be tiltable about the tilting axis. The measuring instrument is positioned at the reference line position corresponding to the tilt axis, and is configured to measure the distance between the cutting material guide surface and the cutting blade at the reference line position.
Therefore, the cutting material guide surface can be easily positioned and adjusted parallel to the cutting blade. That is, the measuring instrument is aligned with the reference line position, and the distance between the cutting material guide surface and the cutting blade at the reference line position is measured. Then, slide the measuring instrument, measure the distance between the cutting material guide surface and the cutting blade at the slide position, and adjust the ruler body so that the difference between the measured value and the measured value at the reference line position is within the specified range. Tilt relative to the ruler support about the tilt axis. Therefore, the cutting material guide surface can be made parallel to the cutting blade based on the measured value at the reference line position.

According to invention of Claim 5, the measuring instrument has a sensor which emits a laser beam. The sensor is attached to the measuring instrument main body so that the direction can be adjusted. By changing the direction, the sensor can emit laser light in both directions of the short side of the ruler main body.
Therefore, regardless of whether the parallel ruler is installed on the right side of the cutting blade or on the left side, the cutting material guide surface of the ruler body is accurately adjusted parallel to the cutting blade by the same sensor. Can do.

According to the invention described in claim 6, the measuring instrument is detachably attached to the ruler body.
Therefore, by removing the measuring instrument from the ruler body, the measuring instrument can be used as a general distance measuring device.

According to the seventh aspect of the invention, the parallel ruler is configured to be able to measure the axial deflection of the cutting blade with a measuring instrument.
Therefore, by using the measuring instrument, not only the cutting material guide surface can be made parallel to the cutting blade, but also the axial deflection of the cutting blade can be measured. By measuring the runout of the cutting blade, it is possible to confirm the mounting failure of the cutting blade.

One embodiment of the present invention will be described with reference to FIGS.
The cutting machine 1 is a table saw as shown in FIG. 1, and includes a base 2 and a table 3 mounted on the base 2. The upper part of the circular cutting blade 4 protrudes substantially at the center of the table 3, and a drive device that uses an electric motor that rotates the cutting blade 4 as a drive source is provided below the table 3.

A parallel ruler 10 is attached to the table 3 as shown in FIG.
The parallel ruler 10 is a ruler for cutting the cutting material W with a predetermined width, and is installed in parallel with the cutting blade 4. An operator (operator) stands on the right side of the table 3 in FIG. 1, places the cutting material W on the table 3, and brings one end of the cutting material into contact with the parallel ruler 10. Then, the cutting material W is moved by the cutting blade 4 with a predetermined width by moving the cutting material W from the near side to the back side (from the right side to the left side in FIG. 1) while bringing the cutting material W into contact with the parallel ruler 10. can do.

The parallel ruler 10 includes a ruler support 13 attached to the table 3 and a ruler body 14 attached to the ruler support 13 so as to be movable as shown in FIGS.
The ruler support 13 has a long connecting frame 15, and a front support 11 and a back support 12 provided at both ends of the connecting frame 15.
The front support 11 is movably attached to a guide rail 5 provided at the front end (the right end in FIGS. 1 and 2) of the table 3 as shown in FIGS. The back side support base 12 is movably attached to the guide rail 6 provided at the back side end (the left side end in FIGS. 1 and 2) of the table 3. Accordingly, the ruler support 13 is attached to the table 3 so as to be movable in the direction of the rotation axis of the cutting blade 4.

As shown in FIG. 3, the front support 11 is provided with an operation lever 17 that can be tilted up and down. The ruler support 13 is provided with a release device (not shown) that is operated by the operation lever 17.
The operation lever 17 is tilted in the vertical direction, so that the ruler support 13 (parallel ruler 10) can be slid with respect to the table 3 by the release device, and the ruler support 13 is fixed to the table 3. And a state in which the ruler support 13 can be detached from the table 3 by releasing the engagement with the guide rail 5 of the front support base 11.

The ruler body 14 is installed so as to cover the connection frame 15 from above the connection frame 15 as shown in FIGS. 3 and 6, and has almost the same longitudinal length as the connection frame 15.
As shown in FIG. 6, the ruler main body 14 includes a pair of cutting material guide surfaces 14a and 14b, a connecting portion 14c that connects the pair of cutting material guide surfaces 14a and 14b over the entire length at the center of the height, and a cutting portion. It has a cover part 14e which covers between the upper end parts of material guide surfaces 14a and 14b.

The cutting material guide surfaces 14a and 14b are wall surfaces that cover the left and right side surfaces of the connecting frame 15 as shown in FIG. (See FIG. 1). A gap is formed between the cutting material guide surfaces 14 a and 14 b and the left and right wall surfaces of the connecting frame 15 so that the ruler body 14 can move (tilt) with respect to the connecting frame 15.
The connecting portion 14 c is installed on the upper surface of the connecting frame body 15 and is attached to be tiltable with respect to a tilting shaft 16 provided at a substantially central position in the longitudinal direction of the connecting frame body 15. Therefore, the ruler body 14 tilts in the table 3 surface direction (horizontal direction) with respect to the connecting frame 15 around the tilting shaft 16.

As shown in FIG. 4, the ruler support 13 is provided with a fixing lever 18 that fixes the ruler body 14.
The fixing lever 18 has a main body portion 18a and a screw shaft portion 18b extending downward from the main body portion 18a. As shown in FIGS. 4 and 5, the main body portion 18a is inserted into the elongated hole 14g of the lid portion 14e. The screw shaft portion 18b is tightened into the screw hole 13a of the connecting frame 15 through the elongated hole 14d of the connecting portion 14c.

As shown in FIG. 5, the long hole 14d and the long hole 14g extend in the left and right direction (up and down direction in FIG. 5) as viewed from the operator. For example, the elongated holes 14 d and 14 g extend in the arc-shaped left-right direction with the tilting shaft 16 as the center. Therefore, when the fixing lever 18 is rotated in the loosening direction, the ruler support 13 can be tilted with respect to the ruler body 14.
When the fixing lever 18 is rotated in the fixing direction, the ruler body 14 is pressed against the ruler support 13 on the lower surface 18a1 of the main body 18a as shown in FIG. Can be fixed.

The lid 14e has an opening 14f as shown in FIG. A measuring instrument 20 is provided in the opening 14f so as to be slidable in the longitudinal direction with respect to the ruler body 14. A frame body 19 is attached to the lid portion 14e to prevent the measuring instrument 20 from being pulled upward with respect to the ruler body 14.
At one end portion of the frame body 19, an attachment portion 19a is formed that is attached to an attachment portion 14j provided on the lid portion 14e so as to be tiltable. At the other end portion of the frame body 19, a locking portion 19 b that is detachably supported by the stopper 21 is formed.
The stopper 21 has a locking piece 21a, and the locking piece 21a is operated by rotating the stopper 21 so as to be locked to the locking portion 19b of the frame body 19, and to be unlocked. Move to.

The measuring instrument 20 is a distance measuring instrument that measures a distance without contact, and includes a measuring instrument body 20a, a sensor 20b, and a rotation lever 20c as shown in FIGS.
The sensor 20b emits laser light and receives reflected light, and a control unit 20g (see FIG. 8), which will be described later, calculates a distance from a time difference received and emitted by the sensor 20b.
The sensor 20b is attached to the rotating lever 20c, and the rotating lever 20c is attached to the measuring instrument main body 20a so that it can rotate 360 ° or 180 ° or more. Therefore, the direction of the laser beam emitted from the sensor 20b can be changed by rotating the rotary lever 20c.

  On the cutting material guide surface 14a of the ruler main body 14, a long hole 14h for laser light is formed as shown in FIG. An elongated hole for laser beam 14i is also formed in the cutting material guide surface 14a on the back side. These long holes for laser light 14h and 14i extend in the longitudinal direction of the ruler body 14 (see FIG. 1). Therefore, the laser beam can pass through the long holes 14h and 14i for the laser beam at any position where the measuring instrument 20 is slid. Laser light can be emitted in either the left or right direction of the ruler body 14.

As shown in FIG. 5, the measuring instrument 20 is movable along the opening 14f, is positioned at the reference line position L0 by the worker side end of the opening 14f, and is adjusted by the worker back side end. Positioned at position L1.
The measuring instrument 20 is positioned at the reference line position L0, so that the sensor 20b is positioned at a position corresponding to the tilting shaft 16 as shown in FIG. The laser beam emitted from the sensor 20b is irradiated to a position in front of the operator with respect to the rotational axis center position of the cutting blade 4.
The measuring instrument 20 is positioned at the adjustment line position L1, so that the sensor 20b is located on the far side of the rotation axis center position of the cutting blade 4. The laser beam emitted from the sensor 20b is irradiated to the worker back side position with respect to the rotation axis center of the cutting blade 4.

As shown in FIG. 8, the measuring instrument 20 includes a control unit 20g, a mode switching button 20d, a measurement button 20e, and a display unit 20f that are electrically connected.
When the measurement button 20e is pressed, a signal is emitted from the measurement button 20e to the control unit 20g. Then, the control unit 20g emits a signal to the sensor 20b, the sensor 20b emits a laser beam, the sensor 20b receives the reflected light, and the sensor 20b emits a signal to the control unit 20g. Then, the control unit 20g measures the time difference between the laser beams received and emitted by the sensor 20b, and calculates the distance from the measured time.

  The controller 20g switches to four modes by pressing the mode switching button 20d as shown in FIGS. That is, the number of times the mode switching button 20d is pressed by the control unit 20g is determined (step S1), and when it is determined once, the parallel ruler adjustment mode is set (step S2). When it is determined twice, the cutting blade run-out measurement mode is set (step S3). When it is determined three times, the distance measurement mode is set (step S4). When it is determined four times, the process ends. The mode is entered (step S5).

The parallel ruler adjustment mode is a mode used when the ruler body 14 is made parallel to the cutting blade 4. The parallel ruler adjustment mode will be described below, and at the same time, a method of making the ruler body 14 parallel to the cutting blade 4 using the parallel ruler adjustment mode will be described.
First, the measuring instrument 20 is installed at the reference line position L0 (step S10 in FIG. 10).
Next, the near side and the far side of the display unit 20f are set to 0 (see FIG. 7, step S11 in FIG. 10). For example, a reset button (not shown) is pressed, and the control unit 20g receiving a signal from the reset button sends a signal to the display unit 20f, and the display unit 20f displays 0 on the near side and the far side.

  Next, the measurement button 20e is pressed. The control unit 20g senses that the measurement button 20e has been pressed (step S12), and the control unit 20g issues a signal to the sensor 20b. The sensor 20b receives and emits the laser beam, the sensor 20b issues a signal to the control unit 20g, and the control unit 20g measures the distance between the cutting material guide surface 14a and the cutting blade 4 based on the signal (step S13). . Then, the control unit 20g sends a signal to the display unit 20f, and the display unit 20f outputs the measurement result to the near side (step S14).

  Next, the measuring instrument 20 is slid to the adjustment line position L1 (step S15), and the measurement button 20e is pushed. The control unit 20g senses that the measurement button 20e has been pressed (step S16), and the distance between the cutting material guide surface 14a and the cutting blade 4 is measured by the control unit 20g and the sensor 20b (step S17). Then, the control unit 20g sends a signal to the display unit 20f, and the display unit 20f outputs the measurement result to the back side (step S18).

Therefore, the distance between the ruler body 14 and the cutting blade 4 at the reference line position L0 and the adjustment line position L1 is displayed on the display unit 20f. And the parallelism with respect to the cutting blade 4 of the cutting material guide surface 14a can be measured by comparing these measured values. That is, if the difference between the measured values is within a predetermined range, it can be determined that the parallelism is high.
On the other hand, if it is not within the predetermined range, it can be determined that the parallelism is poor. In this case, the ruler body 14 is tilted with respect to the ruler support 13. In this state, the parallel ruler adjustment mode can be performed again from the beginning or from step S16 to confirm the parallelism.
Finally, the parallel ruler adjustment mode is terminated by pressing the measurement button 20e (step S19).

The cutting blade runout measurement mode is a mode used when measuring runout during rotation of the cutting blade 4.
When measuring the run-out during rotation of the cutting blade 4, first, the measuring instrument 20 is installed at a desired position, the cutting blade 4 is rotated, and the near side and the back side of the display unit 20f are set to 0 (step) S20).

  Next, the measurement button 20e is pressed. The control unit 20g senses that the measurement button 20e has been pressed (step S21), and the control unit 20g and the sensor 20b measure the distance between the cutting material guide surface 14a and the cutting blade 4 (step S22). Then, the control unit 20g sets the values to the maximum value (steps S23, 24) and the minimum value (steps S25, 26), sends a signal to the display unit 20f, and the display unit 20f displays the maximum value and the minimum value (step S27). ).

Subsequently, the control unit 20g checks whether or not the predetermined number of measurements has been reached (step S28), and if not, steps S22 to S27 are repeated. If the measured value is the maximum value or the minimum value, the value is replaced with the maximum value or the minimum value.
Accordingly, the distance when the cutting blade 4 is closest to the ruler main body 14 and the distance when the cutting blade 4 is moved away are displayed on the display unit 20f. Therefore, the axial deflection of the cutting blade 4 can be measured by obtaining these differences.
Finally, the cutting blade run-out measurement mode is terminated by pressing the measurement button 20e (step S29).

The distance measurement mode is a mode used when the measurement instrument 20 is removed from the ruler body 14 and the distance between the measurement instrument 20 and the measurement object is measured.
When measuring the distance to the measurement object, first, the measuring instrument 20 is removed from the ruler body 14. Then, the direction of the sensor 20b is adjusted. For example, the orientation of the sensor 20b is adjusted with respect to the measurement instrument body 20a so that the direction of the laser light is in the longitudinal direction of the measurement instrument body 20a.

Next, in the cutting blade runout measurement mode state, the measurement button 20e is pressed. The control unit 20g senses that the measurement button 20e has been pressed (FIG. 12, step S30), and the control unit 20g and the sensor 20b measure the distance between the measurement instrument 20 and the measurement object (step S31). And the control part 20g sends a signal to the display part 20f, and the display part 20f displays the measured value (step S32).
Thereby, the distance to the measurement object can be measured.
Finally, the distance measurement mode is ended by pressing the measurement button 20e (step S33).

  According to the parallel ruler 10 configured as described above, the ruler support 13 can be adjusted in the left-right direction position with respect to the table 3 using the operation lever 17 as shown in FIG. And by using the parallel ruler adjustment mode of the measuring instrument 20, the ruler body 14 can be accurately parallel to the cutting blade 4. Therefore, by using the parallel ruler 10, the cutting material W can be accurately cut with a predetermined width.

The embodiment is formed as described above.
That is, the parallel ruler 10 has a ruler support 13, a ruler body 14, and a measuring instrument 20 as shown in FIGS.
Therefore, the distance between the cutting material guide surface 14a and the cutting blade 4 can be measured by the measuring instrument 20, and the position of the ruler body 14 can be adjusted with respect to the ruler support 13 based on the measurement result. Therefore, the cutting material guide surface 14 a can be accurately parallel to the cutting blade 4.
Moreover, the measuring instrument 20 is attached to the ruler body 14 and can measure the distance without contact. Therefore, the distance between the cutting material guide surface 14a and the cutting blade 4 can be easily measured by the measuring instrument 20.

The measuring instrument 20 is a measuring instrument that measures a distance with a laser beam.
Therefore, since the measuring instrument 20 uses laser light, the distance between the cutting material guide surface 14a and the cutting blade 4 can be measured without contact.

2 and 3, the measuring instrument 20 is attached to the ruler body 14 so as to be slidable in the longitudinal direction, and the cutting material guide surface 14a and the cutting blade 4 are provided at at least two positions slid. It is the structure which can measure the distance of.
Accordingly, the measuring instrument 20 is slid with respect to the ruler main body 14, the distance between the cutting material guide surface 14a and the cutting blade 4 is measured at a plurality of (for example, two) positions, and the measured values are compared, thereby cutting. The parallelism of the material guide surface 14a with respect to the cutting blade 4 can be measured. Since the measuring instrument 20 is slidably attached to the ruler body 14, it can be easily slid to a plurality of desired positions.

Further, as shown in FIG. 3, the ruler body 14 is attached to the ruler support 13 so as to be tiltable about the tilting shaft 16. The measuring instrument 20 is positioned at the reference line position L0 corresponding to the tilting axis 16, and is configured to measure the distance between the cutting material guide surface 14a and the cutting blade 4 at the reference line position.
Therefore, the cutting material guide surface 14a can be easily positioned and adjusted parallel to the cutting blade 4. That is, the measuring instrument 20 is aligned with the reference line position L0, and the distance between the cutting material guide surface 14a and the cutting blade 4 at the reference line position L0 is measured. Then, the measuring instrument 20 is slid, the distance between the cutting material guide surface 14a and the cutting blade 4 at the slide position is measured, and the difference between the measured value and the measured value at the reference line position L0 is within a predetermined range. The ruler body 14 is tilted with respect to the ruler support 13 about the tilting axis 16. Therefore, the cutting material guide surface 14a can be made parallel to the cutting blade 4 with reference to the measurement value at the reference line position L0.

The measuring instrument 20 has a sensor 20b that emits laser light as shown in FIG. The sensor 20b is attached to the ruler main body 14 so that the direction thereof can be adjusted. By changing the direction, the sensor 20b can emit laser light in either of the short sides of the ruler main body 14. Yes.
Therefore, even if the parallel ruler 10 is installed on the right side (upper side in FIG. 2) of the cutting blade 4 or on the left side (lower side in FIG. 2), the cutting material guide surfaces 14a and 14b are used by the sensor 20b. Can be accurately adjusted in parallel to the cutting blade 4 (see FIG. 5).

The measuring instrument 20 is detachably attached to the ruler body 14 (see FIG. 3).
Therefore, by removing the measuring instrument 20 from the ruler body 14, the measuring instrument 20 can be used as a general distance measuring device.

The parallel ruler 10 is configured to be able to measure the axial deflection of the cutting blade 4 by the measuring instrument 20.
Therefore, by using the measuring instrument 20, not only the cutting material guide surface 14a can be parallel to the cutting blade 4, but also the axial deflection of the cutting blade 4 can be measured. Then, by measuring the deflection of the cutting blade 4, it is possible to confirm the mounting failure of the cutting blade 4.

(Other embodiments)
The present invention is not limited to the above-described embodiment, and may be the following form.
(1) That is, the ruler main body 14 according to the above embodiment is attached to the ruler support 13 so as to be tiltable as shown in FIG. However, the ruler body 14 is movable in the surface direction with respect to the ruler support 13, and is supported on the ruler support, for example, in parallel and tiltable, and fixed to the ruler support by a fixing lever. Form may be sufficient.
(2) The measuring instrument according to the above embodiment is a measuring instrument that measures distance using laser light. For example, the distance is measured in a non-contact manner using ultrasonic waves, radio waves (radars), and the like. It may be a measuring instrument.

It is a whole perspective view of the table saw provided with the parallel ruler. It is a top view of the table saw provided with the parallel ruler. It is the front fragmentary sectional view which looked at the parallel ruler from the cutting material side. FIG. 4 is a partially enlarged view of FIG. 3 in the vicinity of the fixing lever. It is a partial top view of a parallel ruler. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. 3. It is a top view of the button and display part of a measuring instrument. It is a block diagram of a measuring instrument. It is a flowchart at the time of judging a mode. It is a flowchart in a parallel ruler adjustment mode. It is a flowchart in a cutting blade runout mode. It is a flowchart in distance measurement mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cutting machine 3 ... Table 4 ... Cutting blade 5,6 ... Guide rail 10 ... Parallel ruler 13 ... Ruler support body 14 ... Ruler main body 14a, 14b ... Cutting material guide surface 14h, 14i ... Long hole 15 for laser beam ... Connection Frame 16 ... Tilt axis 18 ... Fixing lever 19 ... Frame 20 ... Measuring instrument 20b ... Sensor 20c ... Rotary lever 20d ... Mode switching button 20e ... Measurement button 20f ... Display unit 21 ... Stopper L0 ... Reference line position L1 ... Adjustment line position

Claims (7)

A parallel ruler of a cutting machine for positioning the cutting material in the surface direction of the table with respect to a cutting blade protruding from the upper surface of the table on which the cutting material is placed,
A ruler support that is translated in the rotational axis direction of the cutting blade and fixed to the table, and a ruler body that is adjusted and fixed in the table surface direction relative to the ruler support,
The ruler body has a cutting material guide surface against which one end of the cutting material is abutted,
A parallel ruler for a cutting machine, wherein a measuring instrument for measuring the distance between the cutting material guide surface and the cutting blade in a non-contact manner is attached to the ruler body. A parallel ruler for a cutting machine according to claim 1,
A parallel ruler for a cutting machine, wherein the measuring instrument is a measuring instrument for measuring distance by laser light. A parallel ruler for a cutting machine according to claim 1 or 2,
The measuring instrument is slidably attached to the ruler body in the longitudinal direction, and is configured to measure the distance between the cutting material guide surface and the cutting blade at at least two positions slid. A parallel ruler for the cutting machine. A parallel ruler for a cutting machine according to claim 3,
The ruler body is attached to the ruler support so that it can tilt around the tilting axis.
The measuring instrument is positioned at a reference line position corresponding to the tilt axis, and is configured to measure the distance between the cutting material guide surface and the cutting blade at the reference line position. Parallel ruler. It is a parallel ruler of the cutting machine in any one of Claims 1-4,
The measuring instrument has a sensor that emits laser light,
The sensor is mounted so that its orientation can be adjusted with respect to the measuring instrument body, and by changing the orientation, it can be configured to emit laser light in either direction of the short side of the ruler body. A parallel ruler for cutting machines characterized by It is a parallel ruler of the cutting machine in any one of Claims 1-5,
A parallel ruler for a cutting machine, wherein the measuring instrument is detachably attached to the ruler body. It is a parallel ruler of the cutting machine in any one of Claims 1-6,
A parallel ruler for a cutting machine, characterized in that it can measure the axial deflection of the cutting blade with a measuring instrument.

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