WO-2026094366-A1 - LENGTH MEASURING DEVICE

WO2026094366A1WO 2026094366 A1WO2026094366 A1WO 2026094366A1WO-2026094366-A1

Abstract

[Problem] To provide a length measuring device capable of reliably holding a workpiece in a desired posture and measuring the length thereof, even if the workpiece has a shape that easily rolls about the longitudinal axis thereof.　[Solution] A length measuring device 1 for measuring the length of a workpiece to be cut by a cutting device 9 comprises: a slide rail 13 fixed relative to the cutting device 9 during length measurement; and a slide part 20 slidably installed on the slide rail 13, the slide part 20 having a slide body 21, a length measuring instrument 60 for measuring the slide distance of the slide body 21 with respect to the slide rail 13, and a workpiece abutting member 30 having a length measurement reference surface that abuts a workpiece 8 installed at a cutting position, as a reference surface during length measurement. The workpiece abutting member 30 comprises a workpiece jig member 40 installed at the tip thereof, the workpiece jig member 40 having a workpiece abutting guide 50 in which a workpiece clamping groove 55 for clamping the end of the workpiece 8 is formed when the end is an inclined surface.

Inventors

KAN EIJI

Assignees

菅機械産業株式会社

Dates

Publication Date: 20260507
Application Date: 20250807
Priority Date: 20241028

Claims (5)

In a length measuring device used in combination with a cutting device having a cutting blade, the length of a workpiece to be cut by the cutting blade is measured. A slide rail that is fixed relative to the cutting device when measuring length, A sliding part that is slidably installed on the aforementioned slide rail, The slide body and A measuring device for measuring the sliding distance of the slide body relative to the slide rail, A workpiece contact member having a length-measuring reference surface that contacts the workpiece, which is installed at the cutting position, as a reference surface for length measurement, It comprises a sliding part having, The length measuring device is characterized in that the workpiece contact member is a workpiece jig member installed at its tip, and has a workpiece contact guide having a workpiece clamping groove formed therein for clamping the end of the workpiece when the end of the workpiece is an inclined surface.
The length measuring device according to claim 1, characterized in that the width and depth of the workpiece clamping groove are set so that the tip of the end of the workpiece to be clamped contacts the length measuring reference surface.
The measuring device according to claim 1, characterized in that the workpiece jig member is fixedly installed at the tip of the workpiece contact member so as to be slidable in a direction perpendicular to the measuring direction.
The workpiece jig member comprises a workpiece jig base that is detachably fixed and slidably installed at the tip of the workpiece contact member in a direction perpendicular to the length measuring direction, The length measuring device according to claim 3, characterized in that the workpiece contact guide is detachably installed on the workpiece jig base.
The surface on the tip side of the workpiece jig base is the length measurement reference surface, The length measuring device according to claim 4, characterized in that the depth and width of the workpiece clamping groove portion are set so that the tip of the end of the workpiece to be clamped contacts the length measuring reference surface.

Description

Measuring device This invention relates to a length measuring device for measuring the length of a workpiece cut by a cutting device. Cutting devices have been widely used to perform cutting operations on workpieces. In such cutting devices, accurately measuring the distance from a predetermined point on the workpiece to the cutting point is necessary to ensure precise cutting. Therefore, length measuring devices have been provided for measuring the length of a workpiece to be cut by a cutting device. For example, such length measuring devices are disclosed in Patent Documents 1 and 2 below. The length measuring devices disclosed in Patent Documents 1 and 2 are configured to measure the length of a workpiece from the measurement value of the measuring device when the contact portion is in contact with the end face of the workpiece. Figure 1 is a perspective view of a length measuring device according to an embodiment of the present invention.Figure 2 is a perspective view of a workpiece jig member according to an embodiment of the present invention.Figure 3 shows the configuration of a work jig base stand according to an embodiment of the present invention.Figure 4 shows the configuration of a workpiece contact guide according to an embodiment of the present invention.Figure 5 is a diagram illustrating the installation state of a work jig member on an arm member according to an embodiment of the present invention.Figure 6 shows the configuration of a cut-out workpiece according to an embodiment of the present invention.Figure 7 is a diagram illustrating the state in which a workpiece is held by a workpiece jig member according to an embodiment of the present invention.Figure 8 is a plan view illustrating the usage of a length measuring device according to an embodiment of the present invention.Figure 9 is a plan view illustrating the usage of a length measuring device according to an embodiment of the present invention. The following describes an embodiment of the length measuring device 1 of the present invention with reference to the drawings. The length measuring device 1 measures the length of a workpiece 8 cut to a predetermined length by a cutting device 9. In this embodiment, however, when the workpiece 8 is a cylindrical round pipe 8, the workpiece jig member 40 installed in the length measuring device 1 contacts the round pipe 8, thereby supporting the round pipe 8 in a desired orientation around its axis. Regarding Figure 3, Figure 3(a) is a perspective view of the workpiece jig base 41 seen from above, and Figure 3(b) is a perspective view of the workpiece jig base 41 seen from below. Regarding Figure 4, Figure 4(a) is a perspective view of the workpiece contact guide 50 seen from above, and Figure 4(b) is a perspective view of the workpiece contact guide 50 seen from below. Regarding Figure 5, Figure 5(a) is a perspective view of the area near the tip of the bar portion 35 before the workpiece jig member 40 is installed, and Figure 5(b) is a perspective view of the area near the tip of the bar portion 35 after the workpiece jig member 40 is installed. Figure 6 shows the configuration of a round pipe 8 with both ends cut diagonally in a V-shape; Figure 6(a) is a perspective view, and Figure 6(b) is a plan view. Regarding Figure 7, Figure 7(a) is a perspective view, and Figure 7(b) is a plan view. The length measuring device 1 comprises a base portion 10 fixed to the cutting device 9, and a slide portion 20 slidably mounted on the base portion 10. The base portion 10 includes a long plate-shaped base base 11 and a slide rail 13 installed on the base base 11 parallel to the longitudinal direction (length measuring direction). The slide rail 13 has a pair of slide grooves 14 extending in the sliding direction formed on both sides of its longitudinal direction (the sliding direction). Furthermore, slide stoppers are installed at both ends of the slide rail 13 in the longitudinal direction to prevent the slide portion 20 from detaching from the end of the slide rail 13. The slide unit 20 comprises a slide body 21, an arm member 30 which is a workpiece contact member that contacts the workpiece 8 during length measurement, and a digital length measuring device 60. The slide body 21 is installed to slide freely in the longitudinal direction relative to the slide rail 13. The slide body 21 includes a linear guide 22 fixed to the slide body 21, a clamp 25 for fixing the slide body 21 so that it cannot slide relative to the slide rail 13, and an arm holding portion 27 for holding the arm member 30. The arm holding portion 27 comprises an arm support shaft 28 extending in the sliding direction and a spring 29 through which the arm support shaft 28 passes. The spring 29, in its compressed state, is installed in contact with the arm member 30 supported by the arm support shaft 28, and its elastic force biases the arm member 30 toward the cutting position by the cutting device 9 in the sliding direction. The c