JP7252839B2 - height gauge - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height gauge in which a stylus can be electrically driven, and in which workability is improved when the stylus is manually driven for measurement.

Height gauges that measure coordinates in the height direction of an object by moving the stylus up and down include those that lift and lower the stylus manually, as well as those that can be lifted and lowered manually as well as electrically (for example, patented Reference 1).

FIG. 1 shows an example of a height gauge whose stylus can be electrically moved up and down. The height gauge 10 shown in FIG. 1 includes a slider 130 which is provided so as to be able to move up and down along a column 120 erected on a base 110, and which is mounted on the slider 130 so that it can come into contact with an object to be measured as the slider 130 moves up and down. a probe 131, a slider handle 132 for manually raising and lowering the slider 130, and a control unit 140 that accepts input of execution instructions such as electric elevation of the slider 130 and various measurements, and performs control based on the input. Prepare.

In electric measurement using the height gauge 10, various measurement execution instructions are input to the control unit 140, and the motor moves the probe 131 up and down to contact the object to be measured. becomes a stable measuring force, and highly accurate measurement results can be obtained.

On the other hand, when the height gauge 10 wants to perform rough measurement at a plurality of measurement positions, the operator holds the slider handle 132 and manually moves the stylus 131 to the measurement position, and then instructs the control unit 140 to perform measurement. Make an input (manual measurement).

Japanese Patent No. 4009379

The slider handle 132 of the slider 130 and the controller 140 are in a positional relationship as shown in FIG. Therefore, when performing manual measurement, the operator raises and lowers the probe 131 by operating the slider handle 132 as shown in FIG. , it is necessary to perform button operations for inputting execution instructions such as measurement, and workability is not good.

An object of the present invention is to provide a height gauge that allows the controller 140 to input instructions such as execution of various measurements without performing an input operation, and to cause the controller 140 to perform control corresponding to the contents of the instructions. be.

The height gauge of the present invention comprises a slider provided so as to be able to move up and down along a support post erected on a base; a probe attached to the slider so as to contact an object to be measured by moving up and down the slider; and a control section having input means and performing predetermined control according to the contents of the input. A height gauge for measuring the dimensions of each part of the slider handle, which is attached to a pressing force transmission mechanism for transmitting a pressing force in the vertical direction to the slider via the slider handle, and a pressing force applied to the pressing force transmission mechanism and a sensor that detects information indicating and inputs it to the control unit, and the control unit performs predetermined control when the pressing force corresponding to the input information reaches a predetermined pressing force characterized by

In this way, by attaching a pressing force transmission mechanism to the slider handle and applying a pressing force thereto, execution instructions such as various measurements can be input without performing an input operation in the control section, and control corresponding to the contents of the instructions can be performed. can be executed by the control unit. In addition, by adopting an elastically displaceable member in the pressing force transmission mechanism, the force is gently transmitted to the slider, so the contact point gently contacts the object to be measured, and the bounce of the contact point that occurs when contact is eliminated. can be mitigated.

The control unit may be configured to perform control to start driving the motor for moving the stylus when the pressing force corresponding to the input information reaches the first pressing force.

By setting the first displacement amount to a very small amount, it is possible to automatically start measurement when the operator starts pressing the pressing force transmission mechanism.

The control unit is configured to perform control to acquire the current position data of the stylus when the pressing force corresponding to the input information reaches a second pressing force larger than the first pressing force. may

As a result, when measuring the height of the upper surface or the lower surface of the object to be measured, for example, the current position data of the stylus can be acquired at the time when a pressing force suitable for measurement is applied to the object to be measured by pressing the elastic displacement member. Therefore, it is possible to perform the measurement with high accuracy.

The control unit may be configured to perform control to perform step feed of the measurement step of the part program for controlling the measurement, triggered by the fact that the pressing force corresponding to the input information reaches a predetermined pressing force. good.

As a result, it is possible to carry out measurement and step feed of the part program without operating the control section.

The control unit may include display means for performing a predetermined display according to the magnitude of the pressing force applied to the pressing force transmission mechanism.

For example, a predetermined bar graph meter display is displayed in green in a value range significantly smaller than the first pressing force, in yellow in a value range slightly smaller than the first pressing force, and in red in a value range exceeding the first pressing force. It may be displayed.

As a result, the operator can apply a pressing force to the pressing force transmission mechanism with an appropriate amount of force, while referring to this and predicting how much more pressing will be required to acquire the current position data.

The slider handle may be provided with at least one switch for inputting a predetermined instruction, and the control section may be configured to perform predetermined control according to the input instruction content based on the operation of the switch.

As a result, it is possible to input instruction contents other than the instruction contents input using the pressing force transmission mechanism by operating the switch on the slider handle. It can be executed by the control unit.

1 is a diagram showing an example of a conventional height gauge; FIG. It is a figure explaining the subject of the conventional height gauge. It is a figure which shows the structural example of the height gauge of this invention. FIG. 4 is a diagram showing a first configuration example of an elastic displacement member; FIG. 10 is a diagram showing a second configuration example of the elastic displacement member; FIG. 11 is a diagram showing a third configuration example of an elastic displacement member; FIG. 4 is a diagram showing a configuration example of an elastic displacement member using a strain gauge; FIG. 4 is a diagram showing another configuration example of the height gauge of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description and drawings, the same functional units are denoted by the same reference numerals, and the functional units that have already been described will be omitted or will be described to the extent necessary.

FIG. 3 shows a configuration example of the height gauge 100 of the present invention. The height gauge 100 includes a base 110 , a support 120 , a slider 130 , a probe 131 , a slider handle 132 , a pressing force transmission mechanism 133 , a sensor 134 and a controller 140 .

The slider 130 is provided so as to be vertically movable along a support 120 erected on the base 110 .

The probe 131 is attached to the slider 130 so that it can come into contact with the object to be measured by raising and lowering the slider 130 .

The slider handle 132 is a member that is fixed to the slider 130 and allows the slider 130 to be manually moved up and down.

In FIG. 3, when the vertical direction in which the slider 130 moves is called the z-axis, the extending direction of the probe 131 is called the x-axis, and the direction orthogonal to the x-axis and the z-axis is called the y-axis, in the example shown in FIG. is provided extending in the z-axis direction, and the slider handle 132 is provided extending from the central portion of the slider 130 to both sides in the y-axis direction. A grip 132a is provided at the end of the slider handle 132 on the control unit 140 side.

The pressing force transmission mechanism 133 is attached to the slider handle 132 , and is a mechanism that gently transmits a vertical force corresponding to the pressing force to the slider 130 via the slider handle 132 when pressed in the vertical direction. A specific implementation form of the pressing force transmission mechanism 133 is arbitrary.

The sensor 134 detects information indicating the pressing force applied to the pressing force transmission mechanism 133 and inputs the information to the control unit 140 . The sensor 134 may be of any type according to the implementation form of the pressing force transmission mechanism 133 .

In FIG. 3, the pressing force transmission mechanism 133 has a body 133a that is vertically displaced by pressing in the vertical direction. is provided adjacent to the control unit 140 side.

A specific configuration example of the pressing force transmission mechanism 133 in this case is shown in FIGS. 4 to 6. FIG. 4 to 6 are cross-sectional views showing the internal configurations of the grip 132a of the slider handle 132 and the main body 133a of the pressing force transmission mechanism 133 when viewed in the y-axis direction.

FIG. 4 shows a first configuration example. In the first configuration example, the pressing force transmission mechanism 133 includes a main body 133a, an upper spring 133b, a lower spring 133c, and a support member 133d.

The body 133a is attached to one end of the support member 133d via an upper spring 133b and a lower spring 133c.

The other end of support member 133 d is fixed within grip 132 a of slider handle 132 . As the support member 133d, it is desirable to employ a member that does not easily bend even if force is applied to one end due to vertical displacement of the main body 133a attached to one end.

The upper spring 133b has one end fixed to the upper part of the main body 133a and the other end fixed to one end of the support member 133d from above.

One end of the lower spring 133c is fixed to the lower part of the main body 133a, and the other end is fixed to one end of the support member 133d from below.

Assuming that the main body 133a, upper spring 133b and lower spring 133c are in the state shown in FIG. can be elastically displaced in the vertical direction.

When the main body 133a is pushed downward, the upper spring 133b is compressed and the lower spring 133c is expanded as shown in FIG. 4(b). Return to the state shown in (a).

On the other hand, when the main body 133a is pushed upward, the upper spring 133b is expanded and the lower spring 133c is compressed as shown in FIG. 4(c). It returns to the state shown in FIG. 4(a).

In the first configuration example of the pressing force transmission mechanism 133, for example, as shown in FIG. 4, at least one sensor 134 is provided for each of the upper spring 133b and the lower spring 133c. The expansion/contraction state of the spring 133c is detected, and information indicating the expansion/contraction state is input to the control unit 140. FIG. A communication method between the sensor 134 and the control unit 140 may be a wired method or a wireless method. The detection method of the sensor 134 is arbitrary, and examples thereof include a non-contact sensor such as a photosensor and a proximity sensor, or a contact sensor such as a switch that does not affect the pressing force on the object to be measured.

The specific arrangement of the sensor 134 is also arbitrary as long as it can detect the expansion/contraction state of each spring. For example, when the sensor 134 is a photosensor, the sensors 134 are arranged vertically as shown in FIG. As a result, the main body 133a is displaced upward or downward, and the arrival of the light blocking plate 134a is detected by the upper or lower sensor 134, thereby indicating that the spring has undergone a predetermined expansion or contraction corresponding to a certain pressing force. can be detected. When it is desired to detect a plurality of pressing forces in each direction, a plurality of sensors 134 may be arranged on each of the upper spring 133b and the lower spring 133c at positions corresponding to the respective pressing forces.

FIG. 5 shows a second configuration example. In the second configuration example, the pressing force transmission mechanism 133 includes a main body 133a, an upper spring 133b, a lower spring 133c, a support member 133e, and a sensor .

One end of the support member 133e is connected to a fulcrum S1 set on the grip 132a of the slider handle 132, and the other end is connected to a fulcrum S2 set on the main body 133a. As the support member 133e, it is desirable to employ a member that does not easily bend even when a force is applied to one end due to vertical displacement of the main body 133a attached to one end. The fulcrum S1 grips the support member 133e so that the main body 133a can swing in the circumferential direction around itself. The shape and spacing of the boundary portion between the grip 132a and the main body 133a are arbitrary as long as the main body 133a can swing in the circumferential direction of the fulcrum S1. Note that the main body 133a may be configured to swing about the fulcrum S2 so that the grip 132a and the main body 133a do not collide with each other depending on the shape and interval of the boundary portion.

One end of the upper spring 133b is fixed to the upper portion of the grip 132a, and the other end is fixed to the middle portion of the support member 133e from above.

One end of the lower spring 133c is fixed to the lower portion of the grip 132a, and the other end is fixed from below at a position where the upper spring 133b of the support member 133e is fixed.

Assuming that the main body 133a, the upper spring 133b and the lower spring 133c are in the state shown in FIG. can be elastically displaced in the vertical direction.

When the main body 133a is pushed downward, the upper spring 133b is extended and the lower spring 133c is compressed as shown in FIG. 5(b). Return to the state shown in (a).

On the other hand, when the main body 133a is pushed upward, the upper spring 133b is compressed and the lower spring 133c is expanded, as shown in FIG. 5(c). It returns to the state shown in FIG. 5(a).

In the second configuration example of the pressing force transmission mechanism 133, for example, as shown in FIG. 5, at least one sensor 134 is provided for each of the upper spring 133b and the lower spring 133c. The expansion/contraction state of the spring 133c is detected, and information indicating the expansion/contraction state is input to the control unit 140. FIG. A communication method between the sensor 134 and the control unit 140 may be a wired method or a wireless method. The detection method of the sensor 134 is arbitrary, and examples thereof include a non-contact sensor such as a photosensor and a proximity sensor, or a contact sensor such as a switch that does not affect the pressing force on the object to be measured.

The specific arrangement of the sensor 134 is also arbitrary as long as it can detect the expansion/contraction state of each spring. For example, when the sensor 134 is a photosensor, the sensors 134 are arranged vertically as shown in FIG. As a result, the main body 133a is displaced upward or downward, and the arrival of the light blocking plate 134a is detected by the upper or lower sensor 134, thereby indicating that the spring has undergone a predetermined expansion or contraction corresponding to a certain pressing force. can be detected. When it is desired to detect a plurality of pressing forces in each direction, a plurality of sensors 134 may be arranged on each of the upper spring 133b and the lower spring 133c at positions corresponding to the respective pressing forces.

The pressing force of the main body 133a can be determined based on the rotation angle of the support member 133e around the fulcrum S1, for example, other than based on the amount of expansion and contraction of the spring. In this case, for example, a rotary encoder is applied to the fulcrum S1 as a sensor to detect the rotation angle of the support member 133e and output it to the control section 140. FIG.

FIG. 6 shows a third configuration example. In the third configuration example, the pressing force transmission mechanism 133 comprises a main body 133a (with a notch 133h), an upper spring 133b, a lower spring 133c and a disk 133f.

The main body 133a has a convex cross section and a notch 133h is formed at the top of the convex.

The disk 133f is provided with a fulcrum S3 set on the grip 132a of the slider handle 132 as a swing axis, and has a projection 133g on the disk surface.

The upper spring 133b has one end fixed to the upper part of the grip 132a and the other end fixed to the disk 133f.

One end of the lower spring 133c is fixed to the lower part of the grip 132a, and the other end is fixed at a position that does not contact the upper spring 133b of the disk 133f.

As shown in FIG. 6(a), the cam mechanism (specifically, opposite cam) is configured. Specifically, when the disk 133f swings, the protrusion 133g moves along the notch 133h, thereby forming a mechanism for displacing the main body 133a.

Assuming that the main body 133a, the upper spring 133b and the lower spring 133c are in the state shown in FIG. , the grip 132a can be elastically displaced in the vertical direction.

When the main body 133a is pushed downward, the upper spring 133b and the lower spring 133c are stretched as shown in FIG. 6(b). returns to the state shown in .

On the other hand, when the main body 133a is pushed upward, the upper spring 133b is compressed and the lower spring 133c is expanded, as shown in FIG. 6(c). It returns to the state shown in FIG. 6(a).

In the third configuration example of the pressing force transmission mechanism 133, for example, as shown in FIG. 6, at least one sensor 134 is provided for each of the upper spring 133b and the lower spring 133c. The expansion/contraction state of the spring 133c is detected, and information indicating the expansion/contraction state is input to the control unit 140. FIG. A communication method between the sensor 134 and the control unit 140 may be a wired method or a wireless method. The detection method of the sensor 134 is arbitrary, and examples thereof include a non-contact sensor such as a photosensor and a proximity sensor, or a contact sensor such as a switch that does not affect the pressing force on the object to be measured.

The specific arrangement of the sensor 134 is also arbitrary as long as it can detect the expansion/contraction state of each spring. For example, when the sensor 134 is a photosensor, the sensors 134 are arranged vertically as shown in FIG. As a result, the main body 133a is displaced upward or downward and the disk 133f rotates counterclockwise or clockwise, and the arrival of the upper spring 133b or the lower spring 133c is detected by the upper or lower sensor 134, It can be detected that a predetermined expansion and contraction corresponding to a certain pressing force has occurred in the upper spring 133b or the lower spring 133c. When it is desired to detect a plurality of pressing forces in each direction, a plurality of sensors 134 may be arranged on each of the upper spring 133b and the lower spring 133c at positions corresponding to the respective pressing forces.

The pressing force of the main body 133a can be grasped based on the rotation angle of the disk 133f around the fulcrum S3, for example, instead of being grasped based on the amount of expansion and contraction of the spring. In this case, for example, a rotary encoder is applied to the fulcrum S3 as a sensor to detect the rotation angle of the disc 133f and output it to the control section 140. FIG.

FIGS. 4 to 6 illustrate a configuration in which the pressing force transmission mechanism 133 is realized using a spring, but instead of the spring, a torque limiter (friction type, spring type, or magnet type) or a magnet type having a torque limiter function may be used. A stable pressing force may be realized by employing a coupling or the like.

The pressing force transmission mechanism 133 can also be realized using a strain gauge as a sensor. An example is shown in FIG. In this example, one end is connected to the fulcrum S1 set on the grip 132a of the slider handle 132, and the other end is connected to the fulcrum S2 set on the main body 133a, as in the second configuration example shown in FIG. A support member 133e is provided, and strain gauges 135a are provided so as to sandwich the support member 133e from above and below.

The strain gauge 135a is an arbitrary element such as a load cell or a pressure sensor that converts the amount of strain caused by pressure into an electrical signal and outputs the electrical signal.

By pressing the main body 133a of the pressing force transmission mechanism 133 downward, pressure is applied to the lower strain gauge 135a via the support member 133e, and by pressing upward, pressure is applied to the upper strain gauge 135a. . The strain gauge 135a generates an electric signal corresponding to the amount of strain caused by the pressure. The electric signal is converted into a numerical value by a numerical conversion circuit 135b composed of, for example, an AD converter and a CPU. It outputs to the control part 140 as information which shows a pressure. The numerical conversion circuit 135b may be provided inside the grip 132a or may be provided elsewhere.

Another example in which the pressing force transmission mechanism 133 is configured using a strain gauge as a sensor is shown in FIG. 7(b). In this example, the pressing force in the vertical direction can be directly input to the strain gauge 135a, and the magnitude thereof is output to the control section 140. FIG. That is, this is a configuration example in which the strain gauge also functions as the pressing force transmission mechanism 133 .

For example, as shown in FIG. 7(b), strain gauges 135a are provided in exposed form on the upper and lower sides of the grip 132a. When the grip 132a is pushed up, the strain gauge 135a provided on the lower side is pressed, and when the grip 132a is pushed down, the strain gauge 135a provided on the upper side is pressed. A signal is generated by the strain gauge 135a. Then, the electric signal is converted into a numerical value by a numerical conversion circuit 135b including an AD converter, a CPU, etc., and output to the control section 140 as information indicating the pressing force. The numerical conversion circuit 135b may be provided inside the grip 132a or may be provided elsewhere.

7(a) and 7(b), the information output to the control unit 140 may be only information based on the strain amount of the strain gauge 135a. 135c may be provided to detect the movement of the slider handle 132 and output this information to the control unit 140 together. Although it is not impossible to apply the pressing force to the strain gauge 135a in stages, it is practically somewhat difficult. It becomes possible to output information on the pressing force to the control unit 140 in stages. The type of the acceleration sensor 135c is arbitrary, and for example, a MEMS acceleration sensor may be adopted.

The control unit 140 has input means and performs predetermined control according to the content of the input.

For example, information indicating the pressing force applied to the main body 133a of the pressing force transmission mechanism 133, the strain gauge 135a, etc., which is input from the sensor 134, the numerical conversion circuit 135b, etc., in addition to receiving the instruction input by the operator from the button, the touch panel, etc. is received, and predetermined control is performed when the pressing force corresponding to the information reaches a predetermined pressing force.

When the pressure is detected by the sensor 134, the information indicating the pressure input to the control unit 140 indicates that a predetermined pressure corresponding to the position of the sensor 134 is generated. Information. Further, for example, when a rotary encoder is used in place of the sensor 134 for detection, information on the rotation angles of the support members 133d and 133e corresponding to the pressing force applied to the main body 133a is used instead of the sensor 134 for strain gauges. In the case of detection using the strain gauge 135a, it is numerical information corresponding to the pressing force applied to the strain gauge 135a. When information such as a rotation angle or numerical value is input to the control unit 140, the control unit 140 determines whether or not the pressing force corresponding to the input angle and numerical value has reached a predetermined pressing force. .

The predetermined control performed by the control unit 140 based on the input information is arbitrary as long as it can be performed by the control unit 140 . Also, different control may be performed according to a plurality of different pressing forces.

For example, when measuring the upper and lower end points of a circular hole, or measuring the diameter and center of a circle, with conventional electric height gauges, pressing the measurement start button on the control unit drives the motor to move the stylus. Then, after contacting the measurement object, the measurement object is moved left and right so that the probe traces the circular hole, and the current position data of the probe is acquired at the timing when the highest point or the lowest point is detected.

In the height gauge 100 of the present invention, among such conventional measurement operations, for example, motor drive start (measurement start) is performed by the main body 133 a of the pressing force transmission mechanism 133 and the strain gauge corresponding to the information input from the sensor 134 . It is configured to be triggered when the pressing force in either the up or down direction applied to 135a reaches a predetermined pressing force. In this case, the predetermined pressing force is arbitrary, but by setting it to a very small pressing force, the measurement can be automatically started when the operator starts pressing the main body 133a or the like.

Further, for example, when a predetermined pressing force related to the start of measurement is set as a first pressing force, and the main body 133a is further pressed and the pressing force reaches a second pressing force larger than the first pressing force, It may be configured to perform control for acquiring the current position data of the tracing stylus 131 . At this time, the second pressing force may be determined based on, for example, a predetermined strength with which the stylus 131 presses the object to be measured by pressing the main body 133a. For the predetermined strength, for example, by setting a strength at which a certain level of measurement accuracy or more can be obtained, it is possible to secure a certain level of measurement accuracy or more.

According to the height gauge 100 of the present invention configured as described above, for example, when measuring the height of the upper surface or the lower surface of the object to be measured, the measurement can be started and the read data of the scale can be acquired without operating the control unit 140. You can run it like this:

A column 120 of the height gauge 100 is provided with a scale, and a slider 130 is provided with a reading head. The read head reads the position of the scale and inputs it as read data to the control unit 140 through wireless or wired communication. The read head is configured, for example, to always send scale read data when the power is turned on.

First, the operator grasps the grip 132a of the slider handle 132 and raises and lowers the slider 130, thereby raising and lowering the stylus 131 and bringing it closer to the object to be measured. In the case of the pressing force transmission mechanism 133 of the type that presses the body 133a, the operator then presses the body 133a upward or downward so that the amount of displacement of the body 133a with respect to the grip 132a corresponds to the first pressing force. Triggered by the sensor 134 detecting that the sensor 134 has reached , the control unit 140 drives the motor to move the slider 130 up and down so that the stylus 131 contacts the object to be measured. When the operator continues to press the stylus 131 on the object to be measured even after the probe 131 contacts the object to be measured, when the amount of displacement of the main body 133a reaches the second amount of displacement corresponding to the second pressing force, the control unit 140 , determine that an appropriate measuring force has been applied to the object to be measured, and read and obtain the position of the scale corresponding to the position of the slider 130 at that time.

As a result, the measurement can be performed only by operating the slider handle 132 combined with the pressing force transmission mechanism 133 without the operator having to operate the buttons or the like of the control unit 140 at the time of measurement. Sliding torque between and the stylus mechanism serves as a stable measuring force, and high-precision measurement results can be obtained.

According to the height gauge 100 of the present invention described above, by pressing the pressing force transmission mechanism 133 attached to the slider handle 132, execution instructions such as various measurements can be input without performing an input operation in the control unit 140. , the control unit 140 can be caused to execute control corresponding to the content of the instruction.

In the case of the pressing force transmission mechanism 133 of the type that presses the main body 133a, the elastic displacement of the main body 133a causes the force to be gently transmitted to the slider 130, so that the stylus 131 gently moves toward the object to be measured. It is possible to reduce the bouncing of the stylus 131 that occurs at the time of contact.

When acquiring the current position data of the stylus 131, the control unit 140 emits a signal such as a sound that enables the operator to recognize that the current position data has been acquired from a speaker or the like provided in the device. It may be configured to be generated from the part. As a result, the operator can quickly recognize that the current position data has been acquired, which improves work efficiency and prevents the occurrence of problems such as damage to the device due to excessive pressure applied to the pressure transmission mechanism 133. can be done.

<Modification 1>
The control unit 140 may be configured to execute step forwarding of processing steps of the part program as predetermined control based on information input from the sensor 134 or the numerical conversion circuit 135b.

For example, for a plurality of measurement steps that make up a part program, after the measurement operation of the previous step is completed, a step feed for starting the measurement operation of the next step, or for a plurality of part programs, after the control by the previous part program is completed, the next step The step feed for starting the control by the part program is applied to the main body 133a of the pressing force transmission mechanism 133 or the strain gauge 135a corresponding to the information input from the sensor 134. It is also possible to configure such that it is triggered by reaching the pressing force of . In this case as well, the predetermined pressing force is arbitrary, but by setting the pressing force to a small one, it is possible to perform step feed without applying an excessive pressing force.

By configuring in this way, it is possible to step-feed the part program without operating the control unit 140 .

<Modification 2>
The control unit 140 may include display means for displaying predetermined information according to the magnitude of the pressing force applied to the main body 133a of the pressing force transmission mechanism 133 and the strain gauge 135a corresponding to the information input from the sensor 134. good.

The display means may be one capable of displaying other information, or may be one dedicated to displaying only predetermined information. Further, the type of display means is arbitrary according to the predetermined information to be displayed, and a general liquid crystal display may be adopted, or another system may be adopted.

The predetermined information is arbitrary, and may be numerical values, characters, or different colors for different pressure ranges.

For example, information may be provided from a sensor each time a plurality of thresholds set for the pressing force is reached, and a different color may be displayed using this as a trigger.

More specifically, for example, a bar graph displayed in green in a value range significantly smaller than the first pressing force, in yellow in a value range slightly smaller than the first pressing force, and in red in a value range exceeding the first pressing force The predetermined information may be indicated by a meter.

As a result, the operator can press the main body 133a and the strain gauge 135a of the pressing force transmission mechanism 133 with an appropriate amount of force, while referring to this and predicting how much more pressing is required to obtain the current position data. becomes.

<Modification 3>
The slider handle may be provided with at least one switch for inputting a predetermined instruction, and the control section may be configured to perform predetermined control according to the input instruction content based on the operation of the switch.

For example, as shown in FIG. 8, a switch 136 is provided on a grip 132a provided at the end of the slider handle 132 on the control section 140 side.

As a result, input of various instruction contents other than the instruction contents input using the pressing force transmission mechanism 133 can be performed by operating the switch 136 provided on the grip 132a of the slider handle 132. It is possible to cause the control unit 140 to execute control corresponding to the content of the instruction without performing an input operation.

Assumable instruction contents include, for example, step feed/return of the part program, deletion of measured data, cursor movement/selection in various input operations, manual start/stop of slider motor driving, and the like.

The present invention is not limited to the above embodiments and modifications. The above-described embodiments and modifications are merely examples, and any device that has substantially the same configuration as the technical idea described in the claims of the present invention and that produces the same effects is acceptable. However, it is included in the technical scope of the present invention. That is, modifications can be made as appropriate within the scope of the technical ideas expressed in the present invention, and forms with such modifications and improvements are also included in the technical scope of the present invention.

Reference Signs List 10, 100 Height gauge 110 Base 120 Strut 130 Slider 131 Probe 132 Slider handle 132a Grip 133 Pressing force transmission mechanism 133a Body 133b Upper spring 133c Lower spring 133d, 133e Support member 133f Disk 133g Projection 133h Notch 134 Sensor 134a Light shielding plate 135a Strain gauge 135b Numeric conversion circuit 135c Acceleration sensor 136 Switch 140 Control units S1, S2, S3 Fulcrum

Claims (6)

a slider provided so as to be able to move up and down along a support post erected on a base;
a probe attached to the slider so as to be able to come into contact with an object to be measured by raising and lowering the slider;
a slider handle fixed to the slider for manually lifting and lowering the slider;
a control unit having an input means and performing predetermined control according to the content of the input;
A height gauge for measuring the dimensions of each part of the measurement object based on the current position data of the probe,
a pressing force transmission mechanism attached to the slider handle for transmitting a pressing force in a vertical direction to the slider via the slider handle;
a sensor that detects information indicating the pressing force applied to the pressing force transmission mechanism and inputs the information to the control unit;
further comprising
The height gauge, wherein the control unit performs predetermined control when the pressing force corresponding to the input information reaches a predetermined pressing force. The control unit is characterized in that when the pressing force corresponding to the input information reaches a first pressing force, the control unit performs control to start driving a motor for moving the probe. The height gauge according to claim 1. When the pressing force corresponding to the input information reaches a second pressing force larger than the first pressing force, the control unit acquires the current position data of the stylus. 3. The height gauge according to claim 2, wherein: The control unit is characterized in that when the pressing force corresponding to the input information reaches a predetermined pressing force, the control unit performs control to perform step feed of the measurement step of the part program that controls the measurement. The height gauge according to claim 1. 5. The height gauge according to any one of claims 1 to 4, wherein the control unit includes display means for performing a predetermined display according to the magnitude of the pressing force. The slider handle has at least one switch for inputting a predetermined instruction,
6. The height gauge according to any one of claims 1 to 5, wherein the control section performs predetermined control according to the content of the instruction input based on the operation of the switch.

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