JPH06507719A - Micrometer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Micrometer The present invention provides a display device having a main body containing measurement elements and a means for displaying measurement results. The head of the main body supports a measuring piece. This measurement piece is useful for measuring the outer dimensions of surfaces, inner dimensions and depth of holes, etc. suitable, removable and replaceable, and provided with a reference surface. Also, the measuring element is It includes an axial rod driven by an air motor.

A micrometer is described in European Patent No. 236371 by the applicant. What is listed is known. This prior application's micrometer is compared to the conventional one. It has various advantages. However, if high measurement accuracy is desired, , Zunawaji If high-precision reproducibility is desired, perform that process on the test spice. The specified permanent pressure is applied even if the drive motor stops at the final stage of the process. A means to do so is needed. During actual measurement, the measuring piece may not be aligned correctly with the measuring piece. Test spikes may not sit evenly. In this case, the motor is The displayed results are inaccurate even though the strike spike has been driven to the final stage of the stroke. Become something. To avoid such problems, a friction system can be used to It reduces the torque of the motor and can slightly lock the mouth/throat in various directions. If so, apply sufficient force to the test spike to force the measurement piece into the correct position. You can also

However, this solution consumes a lot of energy and requires a large amount of batteries and batteries. It will be difficult to meet this demand with electricity supplied by storage batteries. Torque friction system The situation is the same even if it is replaced with a limiter or the like.

Other already known measuring devices are disclosed in Japanese Patent Publication No. 57-128808. There is a digital micrometer. In the case of this micrometer, conductive The measurement is triggered by a pressure sensor made of rubber. Also, special public service 1986-4 In the case of the measuring device disclosed in No. 1301, a part made of glass is Pressure is applied.

Slip clutch system for attaching a measuring device disclosed in Japanese Patent Application No. 61-26802 In the case of systems, measurements are taken under constant pressure. Patent Application No. 1983-219819 In the case of the digital clipper disclosed in Ru. Conventional clipper location disclosed in European Patent Publication No. 287506 In this case, a compression spring applies steady pressure to the piece to be measured.

All of the devices described above use the principle of energy storage that provides high measurement accuracy. It is not used.

This invention attempts to provide a micrometer that is not bound by conventional limitations. The test piece is tested by applying permanent pressure to the test spike. The aim is to significantly improve measurement accuracy by making the seating uniform at the top. Ru.

Therefore, in the micrometer of this invention, mechanical energy is used in the measuring means. By providing a mechanism to accumulate energy and applying a predetermined force to the measuring piece, this energy can be It is designed to release energy.

According to a preferred embodiment, the mechanism for storing mechanical energy is at least one It has a spring.

According to a first embodiment, this spring is a compression spring.

According to Ike no Jitsucho, the spring is Belleviel w. asher) or a barrel spring (barrel) of a block with elastic properties. spring type).

Preferably, the above-mentioned spring is assembled to the measuring piece (slender axial measuring rod and this rotor). It is interposed between the drive mechanism that drives which displacement.

The best part is that the drive mechanism for the measuring rod includes a motor that rotates the rod. A worm is provided and the above spring engages this worm to move the measuring rod forward. It is designed to generate a predetermined torque to advance the vehicle.

In a preferred embodiment, the micrometer includes a microprocessor. This microprocessor, on the other hand, issues commands to the mortar to move the movable table. The measuring rod is moved until the stop spike (forming part of the measuring piece) cannot advance any further. while displacing the motor and on the other hand commanding the motor even after reaching this position. This causes the mechanism to store mechanical energy.

The micrometer is also equipped with a stand to charge the storage battery inside the main unit. You may do so.

A transceiver can be installed on this stand to transmit measurement data to a similar stand or peripheral equipment. It may also be configured to transmit wirelessly.

In another embodiment, the measuring means includes a movable measuring rod supported on two bearings. , a sliding carriage through which this measuring rod passes, and a motor that drives this cow spear saw. A bracket-like carriage that is coaxial with the measuring rod is connected to the rod. the first which stores mechanical energy when the constant rod is at the end of its stroke. A compression spring may also be provided.

Preferably to store mechanical energy when the rod is at the end of its stroke. , a spring was used to press the centerpiece on one hand and was fixed to the measuring rod on the other hand. The first strike may be configured to be pressed by a spring.

Preferably, the carriage is provided with a first microswitch and the measuring rod is provided with a stock. A screw is provided that acts as a par, so that the measuring rod remains stationary and the carriage is driven forward. When the motor is stopped, these two elements work together to provide a stop signal to the motor. may be completed.

A second microswitch is installed on the cow's head so that the carriage is driven backwards. When the measuring rod is stationary, it cooperates with the screw to stop the motor. may be configured.

In this embodiment, the measuring rod is provided with a second compression spring and a second fixed string. The carriage is moved backward by a certain restricted distance in cooperation with the pull ring. You may also do so.

The present invention will be explained in more detail below based on the drawings.

The lAx diagram is a block diagram showing the configuration of the digital micrometer of this invention. the law of nature, Figure 2 is an axial cross-sectional view of the external micrometer, and Figure 3 is a cross-sectional view of the external micrometer. It is a diagram showing the principle of data transmission to the linter, Figure 4 shows a control system including several micrometers mounted on a stand. Figure 5.6 is a diagram showing the data transmission principle, and Figure 5.6 is another example of the micrometer of the root invention. It is a partial sectional view showing an embodiment.

In Figure 1, the pistol-shaped main body lO has a trigger that the user presses during measurement. 11 are provided. Keyboard 12 provided on one outer surface of the micrometer Several function keys 13 and one display 14 are arranged, and the display The device 14 is for displaying the measurement results. The inside of the main unit contains mechanical components necessary for measurement. and electrical components.

The electric motor 15 is driven by a storage battery and its operation is controlled by a microprocessor. Commanded. Microprocessor - RAM memory 17 and ROM memory -18 and drives the worm 19. There is an encoder on the worm shaft 20. An encoder 21 is installed, and this encoder is connected to a cylindrical drum 22 and an optical encoder. It is composed of a transmitter/receiver 24. The drum has a predetermined number of marks 23. , the transceiver is connected to the microprocessor-16. Worm 19 is a screw The sleeve 25 is engaged with the sleeve 25, and the rotation direction of the The leaves move back and forth as shown by the arrows. Threaded sleeve 25 It is mechanically engaged with the measuring rod 26 via a spring 27. This spring 27 is mechanical It constitutes a mechanism that stores energy, and is also used in Test Strike 28. It re-accumulates this energy in the form of more applied force. Test strike is axis 2 9 and the cone 30 on the surface of the piece to be measured. Measurement The pad 26 acts in conjunction with the reference stop 31 and is a series of reference marks 3. It has 2. These fiducial marks were connected to microprocessor-16 It cooperates with a linear position encoder 33.

The measuring port, do 26, shaft 29 and test spike 28 are referred to at the beginning of this specification. It has the same function as that described in the European patent.

From a functional point of view, the initial position corresponds to the zero position of the measuring rod 30. determined by the topper 31. This measuring rod is driven by a motor 15. It is driven forward by the worm 19, and the position encoder 33 measures the A pulse is output every fixed 1 inch displacement. When the measuring rod axially moves, the cone 31 is displaced and the test spike 28 is separated. The test spike is in contact with the surface of the piece under test. When touched, the advancement of the measuring rod 26 is stopped. This stop is done by encoder 33. It is detected by the microprocessor 16 that the pulse from the be done. However, this microprocessor continues to rotate motor 15. A command is given to rotate the predetermined layer. This rotation speed is It is detected by the coder 21. As a result, the spring 27 has a pressure corresponding to the steady measurement force. is applied to the measuring port throat.

As a result of poor centering of the test spike 28 in the piece to be measured, it accumulates in the spring 27. If the measuring rod 26 moves slightly due to the applied force, the position encoder 33 detects this. is detected, the motor is restarted, and the spring 27 is sufficiently re-deformed to complete the measurement. Constant force remains constant. In addition, due to the action of the spring, the shaft will move by a certain distance. When the position encoder 33 detects this, the motor 15 moves the spring 27 is re-deformed so that it is in the same state as before the measurement rod 26 was moved. Hidden The measuring force on the test spike is constant and the spring 17 stores sufficient force.

Therefore a uniform force equal to the force at the level of the contact point of the test spike due to poor centering Even if the test spike stops early in a position where no force can be applied, this spring storage The test spike 28 is moved again by the applied force.

It should be noted here that the test spike marks at various different contact points The applied measuring force is transmitted and received by the microprocessor 16 after the measuring rod 26 has stopped. It is determined by the number of pulses received from the device 24. Each pulse number is The specific deformation of the spike 27 (which ultimately determines the measuring force for the test spike 28) ).

FIG. 2 shows the actual structure of the micrometer having the configuration shown in FIG.

The main body IO is pistol-shaped, and the worm 19 is connected to the measuring rod 26. , the cone 30 activates the displacement of the test spike 28 and the mechanism 27 applies mechanical energy. It accumulates energy and releases this mechanical energy when a predetermined force is applied to the measurement piece.

In the block diagram of FIG. 1, this mechanism 27 includes a worm 19 and a measuring rod 26. It is shown in the form of a compression spring interposed between the In the structure shown in Figure 2, , this mechanism is installed directly on the worm 19 or more precisely by extending this worm. It is provided in the form of a barrel spring suspended on the long part. This worm is What is the torque applied to this worm when it is connected directly to the worm head? Even if the measuring rod is in the opposite direction, it automatically generates a force in the axial direction of the measuring rod tail.

All other elements are the same as shown in figures 7 to 9 of the European patent mentioned above. It is. In particular, it is engraved on the worm 107 installed on the output shaft 108 of the motor 15. The pinion is engaged with the worm 107, and the head 105 holds the measurement piece 106. It is now available for collection. Extension of output shaft 108 supporting worm 107 A motor encoder 21 is installed in the section 200. Measuring rod 26 The encoder 33 is installed on the main body 10. Between the measuring rod and the cone 3° The connection is made by a rigid axial connection shaft 201, around which is a return bar. A spring 202 is provided which serves to return the test spike after use. to read.

Of course, this configuration is not limited and various changes are possible, and some elements may be changed. It can be replaced by others with similar functionality. especially mechanical energy The mechanism for accumulating the It can take any form as long as it has the ability to store mechanical energy, such as a It is okay to do so.

FIG. 3 shows another embodiment of the micrometer of the present invention, in which the cable It is now possible to transmit stored data to peripheral devices without using a computer. micro The meter 300 has a shaft 302 or a measuring device for measuring the external dimensions of a ball, etc. , a 7-domain 301 is provided, which transmits information to a peripheral device 304 via an infrared ray 303. It is connected. In the illustrated case, a printer is used as this peripheral device. but Others, such as computers, are stored in the micrometer or transmitted. Any device capable of converting data transmitted by can also be used for this purpose.

FIG. 4 shows still another embodiment of the micrometer of the present invention, Four micrometers 300 are equipped with different measuring heads. Each my The chromator is mounted and connected on the stand alO by a flexible cable 311. There is. Each stand is connected by a data transmission beam.

Such light beams use infrared rays, which are transmitted and received by transmitters and receivers installed in each stand. I've come to believe it. These rays are arranged in cascade, with the first The micrometer transmits its data via its stand to the micrometer on the second stand. meter, and the second micrometer transmits its own via its stand. The data and the data from the first micrometer are transferred to the micrometer on the third stand. The third micrometer transmits the data to the meter through its stand. data from the first and second micrometers to the master on the fourth stand. It is transmitted to the micrometer. The fourth micrometer stand is an example. For example, it is connected to a peripheral device such as a computer 320. Each stand has a is equipped with the ability to rapidly convert the micrometer's built-in accumulator.

In the micrometer shown in Figure 5.6, the main body 10 is a pistol-shaped handle. It has a dollar 40, which is equipped with two switches 41, 42.

Inside this handle is a drive motor 43 and one or more motors that supply power to this motor. A dry battery or a refillable storage battery is installed, and the output shaft of the motor is equipped with a battery. A nion 45 is installed. This binion was fixed to a movable carriage 47 It is engaged with the rack 46. This carriage has two lateral guides 48.49. is provided and guides movement in the direction of arrow 50.

A measuring rod 51 supported by two bearings 52, 53 passes through this carriage. Extending. This measuring rod is connected to a rectangular opening 5 formed in the ceiling of the carriage. 5 is engaged with a screw 54 passing through the hole. On each side of this screw there are two micro Switches 56,57 are fixed to the carriage. The first compression spring 58 is measured It is located on the side with the stop ring 59 of the mouth/throat, and is connected to the second compression bar. The spring 60 is also located on the other side of the measuring rod with the spring 61. are doing.

The measured value is read on the display 62, which has a mechanical However, you can freely use electric, digital, or analog tare. . A measuring head 63 of the type described above is provided at the front of the device. This measurement The constant shaft shaft 64 excites a test spike 65 . Also, this axis is the measuring rod 5 1 and move together in the axial direction.

To use this micrometer, as before, insert the measuring head into the appropriate hole. Of course, the measuring head used when inserting the ), operate the switch 41 to start the motor. This allows vinyl The on 45 rotates and moves the carriage 47 forward via the rack 46 (left side in Figure 6). let When there is no resistance at the level of the test spike, the carriage will The measuring rod 51 connected via the thread 58 is moved. test spike When resistance is encountered, the measuring port throat stops, but the motor continues to rotate and the carriage Continue moving forward. This causes the compression spring 58 to deform. This effect is micro This continues until the sui nochi 57 comes into contact with the screw 54 fixed to the measuring port nozzle. come into contact with The microswitch then stops the motor from rotating. Test spike repositioned Once attached and the measuring rod can move forward, the microswitch 57 is no longer activated. The motor will restart and cycle (carriage). advancement, advancement of the measuring rod, etc.) continues.

Here, the measurement is a reference measurement using the same device with a reference element such as a reference ring. It consists of comparing and determining differences. These differences depend on the display. For example, it is displayed in the form of a numerical value.

When the measurement is completed, the user presses the switch 42 and the motor reverses. . As in the previous case, the cab is driven by the pinion 45 acting on the rack 46. The ridge is in contact with the measuring rod 5 until the ridge 61 encounters resistance. Move 1 back. The carriage continues to move backwards, and the microswitch 56 is connected to the screw 54. The spring 6o is compressed until they come into contact.

After 1m, the power supply to the -1-1-ter 43 is cut off, and the carry and the gear stop at that position. , the device is ready for the next measurement.

In addition to the above, the present invention can be modified in various ways.

FIG. 4 Continuation of front page (72) Inventor Schilandier, Raymond Switzerland Searsch-1422 Tuileries des Grossisons Champs de Humont

Claims (19)

[Claims] 1. The main body includes a measurement element and a display means for displaying the measurement result, and the main body includes The head provided is suitable for measuring the external dimension of a surface or the internal dimension or depth of a hole etc. The measuring piece is removable and replaceable and has a reference surface. , the measurement carrying out means comprises an axial measuring rod driven by an electric motor; and The means for carrying out the measurement has accumulated mechanical energy and applied a predetermined force to the measuring piece. Sometimes has a mechanism to release the mechanical energy A micrometer characterized by: 2. the mechanical energy storage mechanism has at least one spring (27); The micrometer according to claim 1, characterized in that: 3. Claim 2, characterized in that said spring (27) is a compression spring. Micrometer mentioned. 4. Claim 2, wherein the spring (27) is a barrel spring. Micrometer as described in section. 5. Claim characterized in that said spring (27) is a group of Bell Pill washers. The micrometer according to item 2. 6. According to claim 2, the spring (27) is an elastic body. Micrometer included. 7. A measuring rod (26) to which the spring (27) is connected to a measuring piece, and this rod. Claim 2, characterized in that the drive mechanism is interposed between the drive mechanism of the Micrometer. 8. The measuring rod drive mechanism includes a worm (19) rotated by an electric motor. )have The micrometer according to claim 7, characterized in that: 9. Said spring (27) is connected to the worm (19) and the measuring rod (26) Claim 8, characterized in that it generates a predetermined torque that advances the Micrometer. 10. A microprocessor is provided, which in turn commands the motor (15) when the movable test spike (28) forming part of the measuring rod can be advanced no further. Displace the measuring rod until it no longer moves, and on the other hand, reach this position where no forward movement is possible. Claims characterized in that the mechanism for accumulating mechanical energy is deformed after The micrometer according to item 1 above. 11. A stand (310) is provided to allow refilling of the micrometer. The micro-controller according to claim 1, characterized in that it refills a storage battery. meter. 12. The transceiver installed on the stand (310) transmits the measured data simultaneously. wirelessly transmit to various stands or peripheral devices (320) The micrometer according to claim 11, characterized in that: 13. A transceiver is provided which transmits the measured data to peripheral equipment (304). ) to The micrometer according to claim 1, characterized in that: 14. Transmitter/receiver is infrared type The micrometer according to claims 12 and 13, characterized in that: 15. The measuring means is a movable measuring rod (52, 53) supported by two bearings (52, 53). 51), a sliding carriage (47) through which this measuring rod passes; an electric motor (43) that drives the measuring rod (51) and a carriage that is coaxial with the measuring rod (51). The mechanical energy a first compression spring (58) for accumulating The micrometer according to claim 1, characterized in that: 16. to store mechanical energy when the measuring rod is at the end of its stroke. In order to Press the first stop ring (59) The micrometer according to claim 15, characterized in that: 17. The carriage is provided with a first microswitch (57) and a measuring rod is provided with a screw (54) that acts as a stopper, and these two The elements work together to drive the carriage forward while the measuring rod remains stationary. Claim 15, characterized in that a stop signal is given to the motor (43) when Micrometer as described in section. 18. The carriage is provided with a second microswitch (56), which When the ridge is driven backwards and the measuring rod is stationary, the screws (5) 4) to stop the motor (43) The micrometer according to claim 17, characterized in that: 19. The measuring rod is provided with a second compression spring (60), which It cooperates with the top ring (61) to perform relative backward movement restricted by the carriage. 19. The micrometer according to claim 18, characterized in that the micrometer is closed.