CN201184787Y

CN201184787Y - Detection tool for measured object coplanar degree

Info

Publication number: CN201184787Y
Application number: CNU2008200076227U
Authority: CN
Inventors: 许华山
Original assignee: YANGHENG ENTERPRISE CO Ltd
Current assignee: YANGHENG ENTERPRISE CO Ltd
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2009-01-21
Anticipated expiration: 2018-03-31

Abstract

The utility model discloses a detecting jig for detecting the coplanarity of an object to be detected. The detecting jig comprises a measuring stage, a light-emitting source and a light guide member. The measuring stage is hollow and nontransparent, and includes a surrounding measuring inner circumferential surface and a reference surface formed at the top edge of the measuring stage for arranging the to-be-detected object thereon. The measuring inner circumferential surface defines an accommodating chamber. The light-emitting source is disposed on the measuring stage and emits light penetrating the accommodating chamber. The light guide member is disposed on the measuring stage and arranged at the top end of the accommodating chamber, and the to-be-detected object covers outside the light guide member. By adopting an optical manner to measure the coplanarity of the to-be-detected object, the detecting jig can reduce the manpower required by detection and improve the qualification rate.

Description

The detection tool of object under test same flatness

Technical field

The utility model relates to a kind of detection tool, is meant a kind of detection tool of object under test same flatness especially.

Background technology

Fig. 1 shows a kind of in the past stamping forming cage 11 (EMI shielding), is usually used in electronic product, can isolating electromagnetic.Described cage 11 comprises a fixing bottom surface 111, and described fixedly bottom surface 111 needs higher flatness just can utilize the mode of surface adhering (surface-mountdevice is called for short SMD) to be fixed on the circuit board.

Consult Fig. 2, tested described fixedly bottom surface 111 when whether smooth in the past, be that described cage 11 is positioned on the platform 12, and described cage 11 is not being applied under the external force, with a thin slice 13 as thickness as the business card, whether can insert along the test all around of described cage 11,, represent described cage 11 flatness qualified if can't insert if it is not enough to insert described cage 11 flatness of representative.Under the test of this kind side examination, the spacing δ 1 that the general examination criteria of setting is described fixedly bottom surface any old place and described platform 12 must not be greater than 0.1mm, yet this test mode has following defective:

One, this kind detection mode is with hand inspection, and each part cage 11 needs insert action repeatedly could detect to be finished, and needs relatively large manpower to screen, and has the defective of waste of manpower.

Two, because need more manpower, usually factory all is with sampling check, so the height of yield will be decided on the frequency of sampling observation, on limited cost is considered, be difficult to every cage 11 and will all check, moreover detect flatness to insert thin slice 13 sides examination, whether have only the test insert division smooth, described fixedly bottom surface 111 is if there be the local uneven of other, still might slip and do not measure, be difficult to promote yield, have the not good defective of yield.

Summary of the invention

The purpose of this utility model is to provide a kind of detection tool that detects required manpower and promote the object under test same flatness of yield that reduced.

The detection tool of the object under test same flatness that the utility model provides is applicable to the same flatness that detects an object under test; It comprises a measurement unit, a light emitting source and a light guide.

Described measurement unit is hollow and light tight, and comprise one be around the measurement inner peripheral surface, an and reference plane that is formed at described measurement unit apical margin and places for described object under test.Described measurement inner peripheral surface defines a room, and described light emitting source is arranged at described measurement unit, and can emit beam and pass described room.Described light guide is arranged at described measurement unit, and is positioned at described room top, and puts outside it for described object under test lid, and described light guide is with light scattering that described light emitting source the sent intersection to described object under test and described reference plane.

The utility model is tested the same flatness of described object under test with optical mode, reduces whereby and detects required manpower and promote yield, and it has following effect:

One, utilize the detection tool of described object under test same flatness to detect with optical mode, each part object under test no longer needs repeatedly artificial insertion to detect action, change shared scale size with eye-observation spacing δ 4, or transferring to the computer software computing can determine defective products at once, therefore can reach to save the effect that detects required manpower.

Two, utilize optical mode to detect object under test, step few and can robotization once with regard to complete detect described object under test around the bottom surface whether smooth, therefore can be used for detecting all objects under test that factory produces, the change of having lacked sampling error because of, yield can promote greatly, reaches the preferable effect of yield.

Description of drawings

Be elaborated below by most preferred embodiment and accompanying drawing detection tool to the utility model object under test same flatness, in the accompanying drawing:

Fig. 1 is a stereographic map, and a kind of cage in the past is described;

Fig. 2 is a side view, illustrate a thin slice in the past test described cage one fixedly whether the bottom surface smooth;

Fig. 3 is a three-dimensional exploded view, and first preferred embodiment of the detection tool of the utility model object under test same flatness is described;

Fig. 4 is the partial sectional view of described first preferred embodiment, and the marriage relation of each element is described;

Fig. 5 is the partial enlarged drawing of Fig. 4, and the intersection of an object under test and a reference plane is described; And

Fig. 6 is a three-dimensional exploded view, and second preferred embodiment of the detection tool of the utility model object under test same flatness is described.

Embodiment

Before the utility model is described in detail, be noted that in the following description content similar elements is to represent with identical numbering.

Consult Fig. 3, Fig. 4, Fig. 5, first preferred embodiment of the detection tool of the utility model object under test same flatness is applicable to the same flatness that detects an object under test 91, in this first preferred embodiment, described object under test 91 promptly is a cage, and the detection tool of described object under test same flatness comprises a measurement unit 3, a light emitting source 4 and a light guide 5.

Described measurement unit 3 is hollow and light tight, and comprise one be around measurement inner peripheral surface 31, be formed at described measurement unit 3 apical margins and support face 34 for reference plane 32, a supporting surface 33 and a side that described object under test 91 is placed.Described measurement inner peripheral surface 31 defines a room 35, described measurement inner peripheral surface 31, supporting surface 33, side are supported face 34 and are interconnected in regular turn with reference plane 32, described measurement inner peripheral surface 31 supports face 34 with described side and in fact all is upright, described supporting surface 33 in fact all is level with described reference plane 32, described light guide 5 bottom surfaces are supported by described supporting surface 33, and described light guide 5 sides are resisted against described side to face 34.

Described light emitting source 4 is arranged at described measurement unit 3 bottoms, and can emit beam and pass described room 35, and described light emitting source 4 comprises that one is arranged at the circuit substrate 41 of described measurement unit 3 bottom surfaces, and many light emitting diodes 42 that are arranged at described circuit substrate 41 end faces.

Described light guide 5 is positioned at described room 35 tops, and puts outside it for described object under test 91 lids.The size of the length and width of described light guide 5 is less than described object under test 91 inner edge length and widths one stand out preset value δ 2 (0.2mm), and described light guide 5 is higher than the height of described reference plane 32 less than described object under test 91 inner edge height one difference in height preset value δ 3 (0.5mm).Described light guide 5 comprises the made light-passing board of a transparent acrylic 51, an and tinfoil paper 52, described tinfoil paper 52 is affixed on described light-passing board 51 end faces, and the reflective surface of described tinfoil paper 6 is towards described light emitting source 4, make that the end face of described light guide 5 can't printing opacity, the light scattering that described light guide 5 is sent described light emitting source 4 is to the intersection 6 of described object under test 91 with described reference plane 32.

When measuring, mirror 92 can be set around the detection tool of described object under test same flatness, and a video camera 93 is set up, described video camera 93 can grasp in the described mirror 92 picture and include photo-sensitive cell (charge coupled cell: Charge Coupled Device, be called for short CCD).Whereby, described video camera 93 can grab the picture of intersection 6 light leaks of described object under test 91 and described reference plane 32, and with the picture of the described extracting of computer for analysis, whether be not more than 0.1mm so as to the spacing δ 4 that judges described object under test 91 and described reference plane 32, and described spacing δ 4 is chosen greater than the defective products of 0.1mm.Wherein, the non-pass of the robotization mode emphasis of the present utility model of " described object under test 91 is loaded onto the detection tool of described object under test same flatness, utilize the CCD capturing picture again for judging and measuring " is not so repeat them here its step and details.

As above-mentioned, the detection tool of the utility model object under test same flatness has following effect:

One, utilize the detection tool of described object under test same flatness to detect with optical mode, each part object under test 91 no longer needs repeatedly artificial insertion to detect action, change shared scale size with eye-observation spacing δ 4, or transferring to the computer software computing can determine defective products at once, therefore can reach to save the effect that detects required manpower.

Two, utilize optical mode to detect object under test 91, step few and can robotization once with regard to complete detect described object under test 91 around the bottom surface whether smooth, therefore can be used for detecting all objects under test 91 that factory produces, the change of having lacked sampling error because of, yield can promote greatly, reaches the preferable effect of yield.

Consult Fig. 6, second preferred embodiment of the detection tool of the utility model object under test same flatness is roughly identical with described first preferred embodiment, its difference is in described light guide 5 made for opaque material (metal), described light guide 5 has a light barrier 53, and a plurality of socles 54 that extend down from described light barrier bottom surface, after the light that described light emitting diode 42 sends blocks scattering through light barrier 53, pass between those socles 55, appear via the intersection 6 (as shown in Figure 3) of described object under test 91 again, reach above-mentioned effect whereby with described reference plane 32.

Claims

1, a kind of detection tool of object under test same flatness is applicable to the same flatness that detects an object under test; It is characterized in that, comprise:

Hollow and lighttight measurement unit, described measurement unit comprise one be around the measurement inner peripheral surface, an and reference plane that is formed at described measurement unit apical margin and places for described object under test, described measurement inner peripheral surface defines a room;

A light emitting source is arranged at described measurement unit, and can emit beam and pass described room; And

A light guide is arranged at described measurement unit, and is positioned at described room top, and puts outside it for described object under test lid, and described light guide is with light scattering that described light emitting source the sent intersection to described object under test and described reference plane.

2, the detection tool of object under test same flatness as claimed in claim 1, it is characterized in that: described light guide comprises a light-passing board, and a tinfoil paper that is affixed on described light-passing board end face, and the reflective surface of described tinfoil paper is towards described light emitting source.

3, the detection tool of object under test same flatness as claimed in claim 2, it is characterized in that: described light-passing board is that transparent acrylic is made, and the size of the length and width of described light guide is less than described object under test inner edge length and width one stand out preset value, and described light guide is higher than the height of described reference plane less than described object under test inner edge height one difference in height preset value.

4, the detection tool of object under test same flatness as claimed in claim 3, it is characterized in that: described measurement unit also has a supporting surface and a side is supported face, described measurement inner peripheral surface, supporting surface, side support face and reference plane interconnects in regular turn, described measurement inner peripheral surface and described side are supported face and in fact all are upright, described supporting surface and described reference plane in fact all are level, described light guide bottom surface is supported by described supporting surface, and described light guide side is resisted against described side to face.

5, the detection tool of object under test same flatness as claimed in claim 4 is characterized in that: described light emitting source comprises that one is arranged at the circuit substrate of described measurement unit bottom surface, and many light emitting diodes that are arranged at described circuit substrate end face.

6, the detection tool of object under test same flatness as claimed in claim 1, it is characterized in that: described light guide is that opaque material is made, described light guide has a light barrier, and a plurality of socles that extend down from described light barrier bottom surface, the light that described light emitting source sends passes between the described socle after blocking scattering through light barrier.

7, the detection tool of object under test same flatness as claimed in claim 6, it is characterized in that: the size of described light guide length and width is less than described object under test inner edge length and width one stand out preset value, and described light guide is higher than the height of described reference plane less than described object under test inner edge height one difference in height preset value.

8, the detection tool of object under test same flatness as claimed in claim 7, it is characterized in that: described measurement unit also has a supporting surface and a side is supported face, described measurement inner peripheral surface, supporting surface, side support face and reference plane interconnects in regular turn, described measurement inner peripheral surface and described side are supported face and in fact all are upright, described supporting surface and described reference plane in fact all are level, described light guide bottom surface is supported by described supporting surface, and described light guide side is resisted against described side to face.

9, the detection tool of object under test same flatness as claimed in claim 8 is characterized in that: described light emitting source comprises that one is arranged at the circuit substrate of described measurement unit bottom surface, and many light emitting diodes that are arranged at described circuit substrate end face.