Measurement probe and measuring device

Patent metadata

Field	Value
Publication number	US-10415947-B2
Application number	US-201715647446-A
Country	US
Kind code	B2
Filing date	Jul 12, 2017
Priority date	Jul 19, 2016
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

A probe includes a movable plate to which a stylus capable of contacting a measurable object is mounted, the movable plate displaceable in an X direction; a static plate arranged to overlap with the movable plate; a counter plate facing the movable plate and the static plate; an elastic movable side connection plate, the movable side connection plate connecting the counter plate at at least three places with each of a first end connector positioned toward a first end of the movable plate in the X direction and second end connectors positioned toward a second end in the X direction; and a static side connection plate which connects the static plate and the counter plate. An entire length of the first end connector in a Y direction orthogonal to the X direction is the same size as the entire length of the second end connectors in the Y direction.

First claim

What is claimed is:

1. A measurement probe performing measurement by contacting a measurable object, the measurement probe comprising:
a movable plate to which is mounted a stylus capable of contacting the measurable object, the movable plate being displaceable in a first direction;
a static plate arranged to overlap with the movable plate;
a counter plate facing the movable plate and the static plate;
a movable side connection plate having elasticity, the movable side connection plate connecting the counter plate at at least three places with each of a first end connector positioned toward a first end of the movable plate in the first direction and a second end connector positioned toward a second end in the first direction; and
a static side connection plate which connects the static plate and the counter plate,
wherein,
an entire length of the first end connector in a second direction orthogonal to the first direction is the same size as an entire length of the second end connector in the second direction.

2. The measurement probe according to claim 1 , wherein a shape of the first end of the movable plate in the first direction and the shape of the second end of the movable plate in the first direction are asymmetrical to each other.

3. The measurement probe according to claim 2 , wherein a distance of the second end connector from a mounting position where the stylus is mounted is larger than the distance of the first end connector from the mounting position.

4. The measurement probe according to claim 1 , wherein the movable side connection plate and the static side connection plate are formed by a single plate member in which a portion of the counter plate side of the movable side connection plate and a portion of the counter plate side of the static side connection plate are connected.

5. The measurement probe according to claim 1 , wherein the movable plate, the static plate, the counter plate, the movable side connection plate, and the static side connection plate correspond to a first movable plate, a first static plate, a first counter plate, a first movable side connection plate, and a first static side connection plate respectively, the measurement probe further comprising:
a second movable plate coupled to the first static plate via a coupler and is displaceable in the second direction orthogonal to the first direction;
a second static plate arranged to overlap with the second movable plate;
a second counter plate facing the second movable plate and the second static plate;
an elastic second movable side connection plate, the second movable side connection plate connecting the second counter plate at at least three places with each of a first end connector positioned toward a first end of the second movable plate in the second direction and a second end connector positioned toward a second end in the second direction; and
a second static side connection plate connecting the second static plate and the second counter plate,
wherein the entire length of the first end connector of the second movable side connection plate in the first direction is the same size as the entire length of the second end connector of the second movable side connection plate in the first direction.

6. The measurement probe according to claim 5 wherein:
the second movable plate is positioned above the first counter plate, and
the first counter plate includes a through-hole through which the columnar coupler passes.

7. The measurement probe according to claim 5 , wherein the second movable plate, the second static plate, the second counter plate, the second movable side connection plate, and the second static side connection plate are positioned in a space between the first static plate and the first counter plate.

8. The measurement probe according to claim 7 wherein the coupler extends in the second direction from the second movable plate.

9. A measuring device comprising:
a measurement probe that performs a measurement by contacting a measurable object; and
a mount to which the measurement probe is mounted, the measurement probe comprising:
a movable plate to which is mounted a stylus capable of contacting the measurable object, the movable plate being displaceable in a first direction;
a static plate arranged to overlap with the movable plate;
a counter plate facing the movable plate and the static plate;
a movable side connection plate having elasticity, the movable side connection plate connecting the counter plate at at least three places with each of a first end connector positioned toward a first end of the movable plate in the first direction and a second end connector positioned toward a second end in the first direction; and
a static side connection plate connecting the static plate and the counter plate, wherein an entire length of the first end connector in a second direction which is orthogonal to the first direction is the same size as the entire length of the second end connector in the second direction.

Assignees

• Mitutoyo Corp

Inventors

• Arai Hideyuki
• Iwasaki Kazuya
• Tanaka Minoru
• Kamiyama Shuichi
• Hidaka Kazuhiko

Classifications

• G01B5/016 Primary

  Constructional details of contacts · CPC title

• G01B5/143

  between holes on a workpiece · CPC title

• G01B5/0007

  Surface plates · CPC title

• G01B5/12

  internal diameters · CPC title

• G01B5/02

  for measuring length, width or thickness (G01B5/004, G01B5/08 take precedence) · CPC title