CN213422143U

CN213422143U - A tool for measuring distance between circuit board hole center and flange

Info

Publication number: CN213422143U
Application number: CN202022620403.XU
Authority: CN
Inventors: 马卓; 王志明
Original assignee: Shenzhen Xunjiexing Technology Corp ltd
Current assignee: Shenzhen Xunjiexing Technology Corp ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-06-11
Anticipated expiration: 2030-11-12

Abstract

The utility model provides a tool for measuring distance between circuit board hole center and the flange limit, include: the bottom plate comprises a bottom plate, a separation strip, a first positioning column and a second positioning column, wherein the separation strip, the first positioning column and the second positioning column are fixedly arranged on the upper surface of the bottom plate, the first positioning column is located on one side of the separation strip, the second positioning column is located on the other side of the separation strip, the distance between the first positioning column and the separation strip is the minimum allowable distance, and the distance between the second positioning column and the separation strip is the maximum allowable distance. The utility model discloses can improve 5 hole centers of circuit board to limit distance check efficiency, every block of board measure the bound respectively once can, can replace the quadratic element to detect, have the characteristics of measurement of efficiency height, measurement accuracy height, convenient to use and low cost.

Description

A tool for measuring distance between circuit board hole center and flange

Technical Field

The utility model relates to a circuit board field of making, in particular to a tool that is used for measuring distance between circuit board hole center and the flange limit.

Background

Many parts have two mutually perpendicular terminal surfaces, and the design has the round hole on one of them terminal surface, and the relative position of round hole and another terminal surface, the distance of hole center to this terminal surface is vital to the assembly of parts, use promptly, and the distance is slightly big or slightly little can direct influence the assembly of parts, result of use, even makes the part of processing become the waste product, therefore, it is the very important daily work in the part machining process to detect whether part hole center accords with the design requirement to the terminal surface distance.

Therefore, the accuracy requirements of the printed wiring board unit inner hole center-to-edge distance are very strict for the equipment manufacturers, and the unit inner hole center-to-edge distance tolerance is usually required to be +/-0.05 mm, and the conventional tolerance is +/-0.01 mm. The larger or smaller distance can result in the parts not being assembled or being loose.

And measuring the distance from the center to the edge of the inner hole of the unit after the outer shape of the printed circuit board is milled by adopting quadratic element detection. When the distance from the center to the edge of the inner hole of the unit is detected by using the quadratic element, the distance from the center to the edge of the inner hole of the unit can be measured only one by one, the distance from the center to the edge of the inner hole of the unit can not be measured quickly and accurately, 1pcs product can be measured every 18 seconds, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tool for measuring distance between circuit board hole center and the flange limit to solve at least one above-mentioned technical problem.

In order to solve the above problem, as an aspect of the present invention, there is provided a jig for measuring a distance between a center of an inner hole of a circuit board and a board edge, including: the bottom plate comprises a bottom plate, a separation strip, a first positioning column and a second positioning column, wherein the separation strip, the first positioning column and the second positioning column are fixedly arranged on the upper surface of the bottom plate, the first positioning column is located on one side of the separation strip, the second positioning column is located on the other side of the separation strip, the distance between the first positioning column and the separation strip is the minimum allowable distance, and the distance between the second positioning column and the separation strip is the maximum allowable distance.

Preferably, the bottom plate is made of 45-grade steel.

Preferably, the width of the division bar is 3 mm.

Preferably, the diameters of the first positioning column and the second positioning column are both 2.5 mm.

Preferably, the minimum allowable distance is 3.95mm and the maximum allowable distance is 4.05 mm.

Since the technical scheme is used, the utility model discloses can improve 5 hole centers of circuit board to limit distance check efficiency, every block of board measure the bound respectively can, can replace the quadratic element to detect, have that measurement of efficiency is high, measurement accuracy is high, convenient to use and low cost's characteristics.

Drawings

Fig. 1 schematically shows a schematic structural diagram of the present invention.

Reference numbers in the figures: 1. a base plate; 2. a dividing strip; 3. a first positioning post; 4. a second positioning column; 5. a circuit board; 6. and (4) a hole.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As an aspect of the utility model provides a tool for measuring distance between circuit board hole center and the flange limit is applied to printed wiring board unit hole center and confirms to the limit distance, include: the bottom plate comprises a bottom plate 1, a separating strip 2, a first positioning column 3 and a second positioning column 4, wherein the separating strip 2, the first positioning column 3 and the second positioning column 4 are all fixedly arranged on the upper surface of the bottom plate 1, the first positioning column 3 is located on one side of the separating strip 2, the second positioning column 4 is located on the other side of the separating strip 2, the distance between the first positioning column 3 and the separating strip 2 is the minimum allowable distance, and the distance between the second positioning column 4 and the separating strip 2 is the maximum allowable distance. Preferably, the bottom plate 1 is made of 45-grade steel.

Preferably, the width of the division bar 2 is 3 mm. Preferably, the diameters of the first positioning column 3 and the second positioning column 4 are both 2.5 mm. Preferably, the minimum allowable distance is 3.95mm and the maximum allowable distance is 4.05 mm.

In one embodiment, the whole jig is processed by adopting a linear cutting process, the precision is controlled within 0.01mm, and the measurement precision and the accuracy of the measurement jig are effectively ensured. The distance between the center of the printed circuit board hole and the edge is controlled to be 4.0 +/-0.05 mm, the distance between the center of the first positioning column 3 and the center of the second positioning column 4 and the edge of the separating strip 2 is 3.95mm and 4.05mm respectively, wherein 3.95mm is the minimum allowable distance between the center of the printed circuit board hole and the edge, and 4.05mm is the maximum allowable distance between the center of the printed circuit board hole and the edge.

When the distance from the center of the inner hole of the measuring unit to the edge is measured, the first positioning column 3 and the second positioning column 4 in the jig are used as reference points, the hole 6 in the circuit board 5 is sleeved into the first positioning column 3 in the corresponding jig in parallel, and the distance from the center of the hole 6 in the circuit board 5 to the edge is measured quickly in an upper limit and a lower limit. After the jig finishes measuring the first front surface of the circuit board on the left side, the circuit board 5 is turned over to enable the hole 6 on the circuit board to be sleeved on the second positioning column 4 for measurement.

For example: when the finished circuit board 5 can be sleeved into the first positioning column 3, the hole 6 is unqualified when the center to edge is smaller than the lower limit of 3.95mm, and is qualified otherwise. When the circuit board 5 can be sleeved into the second positioning column 4, the distance from the center to the edge of the hole 6 is less than the upper limit of 4.05mm, and the circuit board is unqualified otherwise.

It is thus clear that, owing to adopted above-mentioned technical scheme, the utility model discloses can improve 5 hole centers of circuit board to limit distance check efficiency, every block of board measure the bound respectively once can, can replace the quadratic element to detect, have that measurement of efficiency is high, measurement accuracy is high, convenient to use and low cost's characteristics.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a tool for measuring distance between circuit board hole center and the flange, its characterized in that includes: the bottom plate (1), the separating strip (2), the first positioning column (3) and the second positioning column (4), wherein the separating strip (2), the first positioning column (3) and the second positioning column (4) are all fixedly arranged on the upper surface of the bottom plate (1), the first positioning column (3) is located on one side of the separating strip (2), the second positioning column (4) is located on the other side of the separating strip (2), the distance between the first positioning column (3) and the separating strip (2) is the minimum allowable distance, and the distance between the second positioning column (4) and the separating strip (2) is the maximum allowable distance.

2. The jig for measuring the distance between the center of the inner hole of the circuit board and the edge of the circuit board according to claim 1, wherein the bottom plate (1) is made of 45-grade steel.

3. The jig for measuring the distance between the center of an inner hole of a circuit board and the edge of the circuit board as claimed in claim 1, wherein the width of the separation strip (2) is 3 mm.

4. The jig for measuring the distance between the center of the inner hole of the circuit board and the edge of the circuit board as claimed in claim 1, wherein the diameters of the first positioning column (3) and the second positioning column (4) are both 2.5 mm.

5. The jig for measuring the distance between the center of the inner hole of the circuit board and the edge of the circuit board as claimed in claim 1, wherein the minimum allowable distance is 3.95mm, and the maximum allowable distance is 4.05 mm.