TWI618918B - Length measuring device - Google Patents

Abstract

A length measuring device for measuring the length of a measuring tool, wherein the measuring base forms a measuring tool receiving groove horizontally down along a measuring standard axis, and includes a fixed seat body and a movable seat body, The movable seat body is slidably arranged in the measuring tool receiving groove relative to the fixed seat body. The fixed seat clamp block and the movable seat clamp block are respectively fixed to two opposite sides of the fixed seat body and the movable seat body. The measurement standard axis corresponds to each other, and the length of the measurement tool is measured under the condition that the measurement standard axis and one of the measurement tool length axes are collinear, and the data collection member is electrically connected to the measurement base, The length of the tool to be measured is collected and obtained according to the relative movement amount of the movable seat body relative to the fixed seat body.

Description

Length measuring device

The invention relates to a measuring device, in particular to a length measuring device for measuring the length of a standard part.

Gages are tools used to test or calibrate the functions of electronic or mechanical equipment, and standard block gauges, or block gauges for short, are one of them. Block gauge is a standard tool used for precise measurement. It is often used as a standard part and is also a benchmark for length measurement. The block gauge is usually a rectangular parallelepiped and has a certain weight, and the material is usually metal.

The block gauge will inevitably oxidize or scratch and affect its accuracy, causing measurement errors. Because the price of the block gauge is not low, it is necessary to re-measure the block gauge and calibrate the new scale to continue using it under non-very serious wear and tear.

However, many precision measuring instruments still have some theoretical errors, such as Abbe error. In short, the axis of the length measuring instrument and the axis of the workpiece to be measured must be in the same straight line, otherwise an error will occur. Therefore, it is necessary to improve the conventional length measuring instruments,

Therefore, the object of the present invention is to provide a length measuring device which can reduce the error of length measuring.

The technical means adopted by the present invention to solve the problems of the conventional technology is to provide a length measuring device for measuring the length of a measuring tool, which includes: a measuring base formed horizontally down along a measuring standard axis There is a measuring tool receiving groove, and includes a fixed seat body and a movable seat body, the fixed seat system is fixedly arranged on the measuring tool bearing groove, the movable seat system is slidably arranged on the measuring tool relative to the fixed seat body Bearing slot; a measuring tool clamping assembly, including a fixed seat clamping block and a movable seat clamping block, the fixed seat clamping block and the movable seat clamping block are respectively fixed to the fixed seat body and the movable seat body facing each other The two sides of the measurement correspond to the standard axis of the measurement, and a clamping space is enclosed between the fixed seat clamping block, the movable seat clamping block and the measuring tool receiving groove for the measurement A measuring tool is sandwiched on the standard axis, and the length of the measuring tool is measured in a state where the measuring standard axis and one of the measuring tool length axes are collinear; and a data collection component Connected to the measurement base, according to the activity Seat relative movement amount of the fixture member of the collection and measuring of the length of the test results.

In an embodiment of the present invention, a length measuring device is provided. The measuring instrument receiving groove is in a zigzag shape and has two opposite side walls and a bottom wall connected between the two side walls.

In one embodiment of the present invention, a length measuring device is provided. Two convex rails extend horizontally along the length of the measuring base and are respectively projected on the two side walls, and the two convex rails each have a A curved portion, the two curved portions are respectively protruded from the two side walls, and a bottom surface of the movable seat body is provided with a fitting piece, and the fitting piece is formed along the circumference of the peripheral wall to form a fit for the two The sliding groove of the curved part of the convex rail, the movable seat body is fitted and slid on the two convex rails by the sliding groove, and is slidably arranged on the measuring tool receiving groove relative to the fixed seat body.

In one embodiment of the present invention, a length measuring device is provided. The measuring base includes a base carrying a top, located on both sides of the measuring tool receiving groove, and each of the fixed seat clamp block and the movable seat clamp block Do not include a horizontal part and a vertical part, the vertical part includes an upper vertical part and a lower vertical part, the upper vertical part and the lower vertical part are formed by extending up and down along a vertical direction perpendicular to the measurement standard axis

In one embodiment of the present invention, a length measuring device is provided. The surfaces of the fixed seat clamp block and the movable seat clamp block respectively have a gage clamping portion, and the two gage clamping portions are along The measuring standard axis protrudes opposite to the surface of the vertical portion for clamping against the tool to be measured.

In one embodiment of the present invention, a length measuring device is provided. The width of the measuring tool clamping portion in a lateral direction is 0.5-1.5 cm. The lateral direction is perpendicular to the vertical direction and the measurement standard axis.

In an embodiment of the present invention, a length measuring device is provided. The measuring base includes a base carrying a top, located on both sides of the measuring tool receiving groove, the fixed seat clamp block and the movable seat clamp block are respectively It includes a horizontal portion and a lower vertical portion, which is formed by extending downward along a vertical direction perpendicular to the measurement standard axis

In one embodiment of the present invention, a length measuring device is provided. The movable seat body includes a positioning member formed on a side of the movable seat body to fix the movable seat body to the measuring tool receiving groove, wherein The weight of the movable seat body or the force by which the positioning member fixes the movable seat body to the measuring tool receiving groove is 3-7 kg.

In an embodiment of the invention, a length measuring device is provided. The measuring tool is a gauge, a caliper corrector, a caliper or a ruler.

Through the technical means adopted by the present invention, since the measuring tool is to be measured in a state where the measuring standard axis and the measuring length axis of the measuring tool are collinear, the fixed seat clamp block and the movable seat clamp block have The configuration of the part and the vertical part, as well as the gage receiving groove is in a zigzag shape, which can avoid the occurrence of Abbe principle error.

Preferably, the movable seat body has a certain weight, or the positioning member has a specific force to fix the movable seat body to the measuring tool receiving groove, so a clamping force is provided to the measuring tool to reduce the measurement error, and Avoid the last digit of the data produced by the data collection component jumping randomly. In addition, for the fixed seat clamp block and the movable seat clamp block with a lateral portion and a vertical portion, the position of the upper vertical portion can also be used for the correction of the clamp amount of the caliper corrector.

100‧‧‧Length measuring device

1‧‧‧ Measuring base

11‧‧‧Gage receiving slot

111‧‧‧Side wall

112‧‧‧Bottom wall

12, 12’‧‧‧Convex rail

13‧‧‧Seat body bearing the top

14‧‧‧Fixed seat

15‧‧‧Mobile seat

151‧‧‧fitting parts

1511‧‧‧Chute

152‧‧‧Locating parts

21‧‧‧fixed seat clamp block

22‧‧‧movable seat clamp block

23‧‧‧Gage clamping part

3‧‧‧Data acquisition component

B‧‧‧To be measured

T‧‧‧Hengbu

V‧‧‧Vertical

V1‧‧‧Upper vertical part

V2‧‧‧Lower vertical part

W‧‧‧Width

FIG. 1 is a perspective view showing a length measuring device according to a first embodiment of the invention.

FIG. 2 is a perspective view showing the fixed seat clamp block and the movable seat clamp block of the length measuring device according to the first embodiment of the present invention.

FIG. 3 is a schematic enlarged view showing the convex rail and the chute of the length measuring device according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a length measuring device according to a second embodiment of the invention.

FIG. 5 is a schematic diagram showing the positioning member of the length measuring device according to the second embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described based on Figs. 1 to 5. This description is not intended to limit the embodiments of the present invention, but is one of the examples of the present invention.

As shown in FIG. 1, a length measuring device 100 according to a first embodiment of the present invention is used to measure the length of a measuring tool, which includes a measuring base 1, a measuring tool clamping assembly and a data acquisition Component 3.

As shown in FIGS. 1 to 3, the measuring base 1 is formed with a measuring tool receiving groove 11 horizontally downward along a measuring standard axis. The measuring tool receiving groove 11 is formed in a zigzag shape and has two opposite side walls 111 and a bottom wall 112 connected between the two side walls. The two convex rails 12, 12 'are along the length of the measuring base 1 The horizontally extending direction is respectively protruded from the two side walls 111, and the two convex rails 12, 12 'respectively have a curved portion, and the two curved portions are respectively protruded from the two side walls 111.

As shown in FIGS. 1 to 3, the measurement base 1 further includes a base carrying top 13, a fixed base 14 and a movable base 15, the base carrying top 13 is formed in the measuring tool receiving groove 11 On both sides, the fixed seat body 14 is fixedly disposed on the measuring tool receiving groove 11 and is located on the top of the seat body carrying top 13, and the bottom surface of the movable seat body 15 is provided with a fitting 151, which A sliding groove 1511 adapted to the curved portions of the two convex rails 12 and 12 'is formed along the circumference of the peripheral wall, and the movable seat body 15 is fitted and slid on the two convex rails by the sliding groove 1511 12, relative to the fixing base 14, is slidably disposed in the measuring tool receiving groove 11. Preferably, the weight of the movable base 15 is 3-7 kg, such as 5 kg, and provides a considerable weight of clamping thrust to reduce the measurement error.

As shown in FIGS. 1 to 3, the measuring tool clamping assembly includes a fixed seat clamping block 21 and a movable seat clamping block 22, the fixed seat clamping block 21 and the movable seat clamping block 22 are respectively fixed to the fixing seat The body 14 and the movable seat body 15 have two opposite sides, and correspond to each other on the measurement standard axis, and between the fixed seat clamp block 21, the movable seat clamp block 22 and the measuring tool receiving groove 11 A clamping space is enclosed for clamping a measuring tool B on the measuring standard axis, and the measuring standard axis and one of the measuring tool B axes of the measuring length are collinear Measure the length of the tool B to be measured. Specifically, the measuring tool B is a gauge, a caliper corrector, a caliper or a ruler.

As shown in FIGS. 1 to 3, in detail, in this embodiment, the fixed seat clamp block 21 and the movable seat clamp block 22 are cross-shaped, and each includes a horizontal portion T and a vertical portion V , The vertical part V includes an upper vertical part V1 and a lower vertical part V2, the upper vertical part V1 and the lower vertical part V2 are formed by extending up and down along a vertical direction perpendicular to the measurement standard axis, and the lower The vertical portion V2 extends into the measuring tool receiving groove 11, and the horizontal portion T is horizontally disposed on the base carrying top 13. In addition, the opposite surfaces of the fixed seat clamp block 21 and the movable seat clamp block 22 respectively have a gage clamping portion 23, and the two gage clamping portions 23 protrude from each other along the measurement standard axis The surface of the vertical portion V for clamping against the to-be-measured Gage B. Preferably, the width W of the measuring tool clamping portion 23 in a transverse direction perpendicular to the vertical direction and the measurement standard axis is 0.5-1.5 cm, for example 1 cm, to adapt to the width of the block gauge, so that The entire clamping position is more accurate. Of course, the invention is not limited to the fixed seat clamp block and the movable seat clamp block being cross-shaped. In other embodiments, the fixed seat clamp block and the movable seat clamp block may be T-shaped, and include a horizontal portion and a lower vertical portion, the lower vertical portion is along a vertical direction perpendicular to the measurement standard axis It is formed to extend downwards, and the lower vertical portion extends into the measuring tool receiving groove, and the horizontal portion is horizontally arranged on the top of the seat body.

As shown in FIGS. 1 to 3, specifically, the data collection member 3 is an optical ruler, and is disposed on the side of the measurement base 1 and electrically connected to the measurement base 1, which is based on the The relative movement of the movable base 15 relative to the fixed base 14 is collected and the length of the tool B to be measured is obtained. Preferably, the number of the data collection members 3 can be two, which are respectively disposed on the two opposite sides of the measurement base 1 to improve the accuracy of the entire measurement through multiple detections and data collection.

Preferably, the end of the measuring base may be provided with a connecting piece to connect with other measuring bases, so that the length of the measuring tool receiving groove can be elastically adjusted.

As shown in FIGS. 4 and 5, a length measuring device 100a according to a second embodiment of the present invention is not much different from the length measuring device 100 in structure, the difference mainly lies in: the movable base 15 It includes a positioning member 152 formed on the side of the movable base 15. In this embodiment, the positioning member 152 fixes the movable seat body 15 to the measuring tool receiving groove 11 by screwing in a screw. Moreover, the force of the positioning member 152 to fix the movable base 15 to the measuring tool receiving groove 11 is 3-7 kg, for example 5 kg.

The above descriptions and descriptions are only for the description of the preferred embodiments of the present invention. Those with ordinary knowledge of this technology can make other modifications based on the scope of the patent application as defined below and the above description, but these modifications should still be It is within the scope of the rights of the invention for the spirit of the invention.

100‧‧‧Length measuring device

1‧‧‧ Measuring base

11‧‧‧Gage receiving slot

12, 12’‧‧‧Convex rail

13‧‧‧Seat body bearing the top

14‧‧‧Fixed seat

15‧‧‧Mobile seat

21‧‧‧fixed seat clamp block

22‧‧‧movable seat clamp block

23‧‧‧Gage clamping part

3‧‧‧Data acquisition component

B‧‧‧To be measured

Claims (9)

A length measuring device for measuring the length of a measuring tool, including: a measuring base, a measuring tool receiving groove formed horizontally down along a measuring standard axis, and including a fixed seat body and a movable seat The fixed seat system is fixedly disposed on the measuring tool receiving groove, and the movable seat system is slidably disposed on the measuring tool receiving groove relative to the fixed seat body; a measuring tool clamping component includes a fixed seat clamping block And a movable seat clamp block, the fixed seat clamp block and the movable seat clamp block are respectively fixed to two sides of the fixed seat body and the movable seat body facing each other, and correspond to each other on the measurement standard axis, And a clamping space is enclosed between the fixed seat clamping block, the movable seat clamping block and the measuring tool receiving groove, so that a measuring tool to be measured is clamped on the measuring standard axis, and the measuring standard Measuring the length of the to-be-measured tool in a state where the axis and one of the to-be-measured length axes of the to-be-measured are collinear; and a data acquisition member electrically connected to the measuring base, according to the movable base The relative movement amount of the fixed base is collected and obtained Measuring the length of the tool. The length measuring device according to claim 1, wherein the measuring tool receiving groove is in a zigzag shape and has two opposite side walls and a bottom wall connected between the two side walls. The length measuring device according to claim 2, wherein the two convex rails extend horizontally along the length direction of the measuring base and are respectively protruded on the two side walls, and the two convex rails each have a curved portion, The two curved portions are respectively protruded from the two side walls, and a fitting piece is provided on the bottom surface of the movable seat body, and the fitting piece extends along the circumference of the peripheral wall to form a fitting piece adapted to the two convex rails In the sliding groove of the curved part, the movable seat body is fitted and slid on the two convex rails by the sliding groove, and is slidably arranged on the measuring tool receiving groove relative to the fixed seat body. The length measuring device according to claim 1, wherein the measuring base includes a base carrying tops, located on both sides of the measuring tool receiving groove, and the fixed seat clamp block and the movable seat clamp block each include a A horizontal part and a vertical part, the vertical part includes an upper vertical part and a lower vertical part, the upper vertical part and the lower vertical part The part is formed to extend up and down along a vertical direction perpendicular to the measuring standard axis, wherein the lower vertical part extends into the measuring tool receiving groove, and the horizontal part is horizontally disposed on the top of the base body bearing. The length measuring device according to claim 4, wherein the surfaces of the fixed seat clamp block and the movable seat clamp block respectively have a gage clamping portion, and the two gage clamping portions are along the measurement The standard axis protrudes from the surface of the vertical portion oppositely for clamping against the tool to be measured. The length measuring device according to claim 5, wherein the width of the measuring tool clamping portion in a lateral direction is 0.5-1.5 cm, and the lateral direction is perpendicular to the vertical direction and the measuring standard axis. The length measuring device according to claim 1, wherein the measuring base includes a base carrying a top, located on both sides of the measuring tool receiving groove, the fixed seat clamp block and the movable seat clamp block each include a horizontal Part and a lower vertical part, the lower vertical part is formed to extend downward along a vertical direction perpendicular to the measuring standard axis, wherein the lower vertical part extends into the measuring tool receiving groove, and the horizontal part It is horizontally arranged on the top of the seat body. The length measuring device according to claim 1, wherein the movable seat body includes a positioning member formed on a side of the movable seat body to fix the movable seat body to the measuring tool receiving groove, wherein the movable seat body The weight of the body or the force by which the positioning member fixes the movable seat body to the measuring tool receiving groove is 3-7 kg. The length measuring device according to claim 1, wherein the measuring tool is a gauge, a caliper corrector, a caliper or a ruler.