CN106382901A - Measuring fixture and measuring method - Google Patents

Abstract

The present invention relates to a measuring jig and a measuring method, wherein the measuring jig comprises a support table, wherein the support table is used to carry a workpiece to be measured; a first movable block and a second movable block, wherein the first movable block and the second movable block are respectively movably arranged on two adjacent side walls of the support table, and the first movable block and the second movable block can respectively adjust the distance between the first movable block and the support table in the horizontal direction; and a plurality of limit members are arranged on the top surfaces of the support table, the first movable block and the second movable block, and are used to clamp and position the workpiece to be measured. The above-mentioned measuring jig, since the side walls of the support table are movably provided with the first movable block and the second movable block with an adjustable distance, can measure products of different sizes and specifications on the support table, has a simple overall structure, is convenient to clamp, has high measuring efficiency, is low in cost, can meet the requirements of rapid measurement of different products, and has high versatility.

Description

Measuring fixture and measuring method

technical field

The invention relates to the field of measuring tooling, in particular to a measuring fixture and a measuring method.

Background technique

The traditional measurement fixture is equipped with a workbench, and a station is set on the workbench. When performing projection measurement on the product, the workpiece is stuck in the station for measurement. With the increasing demand for 3C products, such as mobile phones, tablets, navigation Instruments, e-books, learning machines, etc. require the development cycle of various 3C products to be shorter and shorter, resulting in heavier and heavier measurement tasks, and the specifications of various 3C products are different, and their shell shapes and sizes are also different. The overall measurement efficiency is low and the cost is increased by using different fixtures. The traditional measurement fixtures have poor versatility and are difficult to meet the measurement requirements for different 3C products.

Contents of the invention

Based on this, it is necessary to provide a measurement fixture and a measurement method with low cost, high measurement efficiency and high versatility.

A measuring fixture, comprising:

a support platform, the support platform is used to carry the workpiece to be measured;

The first movable block and the second movable block, the first movable block and the second movable block are movably arranged on the two adjacent side walls of the support platform respectively, and the first movable block and the second movable block can respectively be adjusting the distance from the support platform in the horizontal direction;

A plurality of limit pieces are arranged on the top surfaces of the support table, the first movable block and the second movable block, and are used for clamping and positioning the workpiece to be measured.

In one of the embodiments, the limiting member is a positioning pin, and the positioning pin on the support platform is arranged on a side opposite to the first movable block and the second movable block respectively.

In one of the embodiments, at least one guide hole is horizontally provided on the side walls of the support table opposite to the first movable block and the second movable block, and the guide hole is connected to the first movable block and the second movable block. The blocks are respectively connected with springs, and the corresponding positions of the first movable block and the second movable block are respectively provided with connecting rods movably inserted in the guide holes, and the springs are sleeved on the connecting rods. The first movable block and the second movable block are in contact with the side wall of the support platform respectively by the tension of the spring in a natural state.

In one of the embodiments, guide rods are provided on the side walls of the first movable block and the second movable block opposite to the supporting platform, and the guide rods are inserted into one of the guide holes.

In one of the embodiments, the top surface of the support platform is provided with a plurality of positioning holes along the vertical direction, and positioning support columns for supporting the workpiece to be measured are movably inserted in the positioning holes.

In one of the embodiments, the positioning support column includes a straight rod part and a head arranged coaxially, and the straight rod part is movably inserted into the positioning hole on the top surface of the support table. The diameter of the straight rod part smaller than the diameter of the head, the head is in abutting contact with the bottom surface of the workpiece to be measured.

In one of the embodiments, the top surface of the support platform is located at the same level as the top surfaces of the first movable block and the second movable block.

In one of the embodiments, it further includes a turntable, the turntable is uniformly provided with a plurality of the support platforms along the circumference, and the turntable can drive the plurality of support platforms to rotate.

A kind of measuring method utilizing above-mentioned measuring fixture, the step comprises:

providing a workpiece to be measured, the bottom surface of the workpiece to be measured is a plane;

Pull the first movable block and the second movable block in a direction away from the support table, place the workpiece to be measured on the top surface of the support table, and make the workpiece to be measured and the support table The top surface fits together and the side walls are against the surrounding positioning pins;

Turn on the detector, measure the workpiece to be measured on the support platform, and obtain the contour data or internal structure dimension data or the combination of contour contour data and internal structure dimension data of the workpiece to be measured.

A kind of measuring method utilizing above-mentioned measuring fixture, the step comprises:

providing a workpiece to be measured, the front and back surfaces of the workpiece to be measured respectively have concavo-convex parts;

Inserting a plurality of positioning support columns on the support table according to the distribution of the concave-convex part on the reverse surface of the workpiece to be measured;

Pulling the first movable block and the second movable block in a direction away from the support table, placing the workpiece to be measured on a plurality of positioning support columns, so that the bottom surface of the workpiece to be measured is aligned with the positioning The support column is in contact with each other, and the workpiece to be measured is attached to the top surface of the support table and the side wall is opposed to the surrounding positioning pins;

Turn on the detector, measure the workpiece to be measured on the support platform, and obtain the contour data or internal structure dimension data or the combination of contour contour data and internal structure dimension data of the workpiece to be measured.

The above-mentioned measuring fixture, because the side wall of the support platform is provided with the first movable block and the second movable block with an adjustable distance, can measure products of different sizes and specifications on the support platform, the overall structure is simple, and the clamping is convenient. The measurement efficiency is high, the cost is low, and it can adapt to the requirements for rapid measurement of different products, and has high versatility.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the measuring jig embodiment of the present invention;

Fig. 2 is a top view structural schematic diagram of an embodiment of the measuring fixture of the present invention;

Fig. 3 is a side view structural schematic diagram of an embodiment of the measuring fixture of the present invention;

Fig. 4 is a schematic diagram of the exploded structure of an embodiment of the measuring fixture of the present invention;

Fig. 5 is a top view structural schematic diagram of a turntable provided with multiple support platforms;

Fig. 6 is a block flow diagram of an embodiment of a measuring method of a measuring fixture of the present invention;

FIG. 7 is a flowchart of another embodiment of the measuring method of the measuring fixture of the present invention.

detailed description

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intervening elements at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only and are not intended to represent the only embodiments.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to Fig. 1 and Fig. 2, the measuring fixture 10 provided by the present invention includes a support platform 100, a first movable block 200, a second movable block 300 and a plurality of spacers; the top surface of the support platform 100 is a plane, and For carrying the workpiece to be measured, the workpiece to be measured can be but not limited to 3C products, such as the shell of mobile phones, tablet computers, navigators, e-books, and learning machines; the first movable block 200 and the second movable block 300 are movable respectively. The two adjacent side walls of the support platform 100, that is, the two movable blocks are arranged perpendicular to each other; a plurality of position limiting members are arranged on the top surfaces of the support platform 100, the first movable block 200 and the second movable block 300 for Hold and position the workpiece to be measured. Due to the adjustable movable block, it is possible to measure products of different sizes and specifications on the support table 100. The measuring fixture 10 has a simple overall structure, convenient clamping, high measurement efficiency, low cost, and can adapt to different types of products. The product is required for rapid measurement and has high versatility.

The bottom of the support table 100 can be a support base 150 , and the bottom of the support base 150 is provided with a plurality of screw holes for easy fixing.

As shown in Figures 1 to 4, in a specific embodiment, the position-limiting member adopts a positioning pin 110, and one end of the positioning pin 110 has a thread, and the positioning pin 110 can be connected to the support table 100 and the first movable block through the thread respectively. 200 and the second movable block 300 are screwed and fixed. The positioning pins 110 on the support table 100 are arranged on the side opposite to the first movable block 200 and the second movable block 300, respectively, that is to say, a plurality of positioning pins 110 are surrounded by a rectangular or approximately rectangular shape, so as to facilitate the workpiece to be measured. For positioning and clamping.

As shown in FIG. 4 , at least one guide hole 130 is respectively provided on the side walls of the supporting platform 100 opposite to the first movable block 200 and the second movable block 300 , and the guide hole 130 may be, but not limited to, a circular hole. For example, the side wall corresponding to the longer side of the supporting platform 100 is provided with four guide holes 130 at intervals, and the other adjacent side wall is provided with two guide holes 130, and the guide holes 130 are connected to the first movable block 200 and the second movable block 300. Springs 410 are respectively connected between them. The corresponding positions of the first movable block 200 and the second movable block 300 are respectively provided with connecting rods 400 that are movably inserted in the guide holes 130. The connecting rods 400 can be screw rods, and the springs 410 are sleeved on The connecting rod 400 , the first movable block 200 , and the second movable block 300 are in contact with the side walls of the supporting platform 100 respectively under the tension of the spring 410 in a natural state. That is to say, in the original state without external force, the spring 410 in the guide hole 130 is in a stretched state. Due to the pulling force of the spring 410, the first movable block 200 and the second movable block 300 are respectively abutted against the supporting platform 100, After the first movable block 200 or the second movable block 300 is pulled apart, due to the pulling force of the spring 410, the positioning pins 110 on the two movable blocks are respectively in contact with the two side walls of the workpiece to be measured, and the clamping operation is very convenient .

Preferably, guide rods 500 are provided on the side walls of the first movable block 200 and the second movable block 300 opposite to the supporting platform 100 respectively, and the guide rods 500 are inserted into one of the guide holes 130 . The aperture of the guide hole 130 corresponding to the guide rod 500 can be set larger than the apertures of other guide holes 130, and the diameter of the guide rod 500 is also set to be larger than the diameter of the connecting rod 400, so that the guide rod 500 also plays a supporting role. function, so that the measuring jig 10 is not easily damaged.

As shown in Figure 4, in one embodiment, in order to increase the versatility of the measuring jig 10, a plurality of positioning holes 140 can be provided in the vertical direction on the top surface of the support table 100, and the positioning holes 140 are movably inserted for A positioning support column 120 supporting the workpiece to be measured. The structure provided with the positioning support column 120 can be used for clamping and measuring the workpiece to be measured with concave-convex features on the front and back sides.

As shown in Figure 4, in more detail, the positioning support column 120 includes a straight rod part and a head arranged coaxially, and the straight rod part is movably inserted into the positioning hole 140 on the top surface of the support table 100, and the diameter of the straight rod part is The diameter of the head, the head is in contact with the bottom surface of the workpiece to be measured, and the head avoids the concave and convex parts of the workpiece to be measured.

In order to facilitate the clamping operation, the top surface of the support table 100 is located on the same level as the top surfaces of the first movable block 200 and the second movable block 300 , that is to say, the three are located on the same horizontal plane.

Of course, the positioning pin 110 may not be provided on the two movable blocks, and the top surfaces of the first movable block 200 and the second movable block 300 may be set higher than the top surface of the support table 100. When clamping, the workpiece to be measured The side walls of the first movable block 200 and the second movable block 300 directly abut against the side walls.

As shown in Figure 5, in one embodiment, in order to further improve the measurement efficiency, a turntable 11 can be added, and the turntable 11 is evenly provided with a plurality of support platforms 100 along the circumference, and the turntable 11 can drive a plurality of support platforms 100 to rotate, measure After finishing a workpiece to be measured, the turntable 11 is rotated to the initial measurement station. Setting the structure of the turntable 11 can greatly improve measurement efficiency and save time and cost.

As shown in Fig. 1, Fig. 4, Fig. 6, the present invention also provides the measuring method utilizing above-mentioned measuring jig 10, and the steps include:

S10. Provide the workpiece to be measured, the bottom surface of the workpiece to be measured is a plane, for example, the back shell of a mobile phone processed by CNC.

S20. Pull the first movable block 200 and the second movable block 300 in a direction away from the support table 100, place the workpiece to be measured on the top surface of the support table 100, make the workpiece to be measured fit the top surface of the support table 100 and The side walls resist against the surrounding positioning pins 110 .

S30, turn on the detector, measure the workpiece to be measured on the support table 100, and obtain the contour data or the internal structure dimension data or the combination of the contour contour data and the internal structure dimension data of the workpiece to be measured.

As shown in Figure 5, similarly, before step S10, a plurality of support tables 100 can be arranged on the turntable 11, and the turntable 11 is used to drive the workpieces to be measured that are clamped on the plurality of support stations 100 to measure one by one, which can greatly improve the Overall measurement efficiency.

As shown in Fig. 1, Fig. 4, Fig. 7, the present invention also provides another kind of measuring method utilizing the above-mentioned measuring fixture 10, and the steps include:

S11. Provide the workpiece to be measured. The front and back sides of the workpiece to be measured have concave and convex parts respectively, such as the middle frame of a mobile phone processed by CNC.

S21. According to the distribution of concave and convex parts on the back surface of the workpiece to be measured, a plurality of positioning support columns 120 are inserted on the support table 100 to avoid the concave and convex parts on the back surface of the workpiece to be measured and ensure the flatness during measurement.

S31. Pull the first movable block 200 and the second movable block 300 away from the support table 100, place the workpiece to be measured on a plurality of positioning support columns 120, so that the bottom surface of the workpiece to be measured is in contact with the positioning support columns 120 , and make the workpiece to be measured adhere to the top surface of the support table 100 and the side walls to abut against the surrounding positioning pins 110 . In actual operation, the positioning pins 110 on the two movable blocks can be respectively pulled apart to adjust the distance between the movable block and the support table 100 so that it is suitable for placing and clamping the workpiece to be measured.

S41. Turn on the detector, measure the workpiece to be measured on the support table 100, and obtain the contour data or the internal structure dimension data or the combination of the contour contour data and the internal structure dimension data of the workpiece to be measured.

As shown in Figure 5, before step S11, a plurality of support platforms 100 can be arranged on the turntable 11, and the turntable 11 is used to drive the workpieces to be measured clamped on the plurality of support platforms 100 to measure one by one, which can greatly improve the overall measurement efficiency.

The above-mentioned measuring fixture, because the side wall of the support platform is provided with the first movable block and the second movable block with an adjustable distance, can measure products of different sizes and specifications on the support platform, the overall structure is simple, and the clamping is convenient. The measurement efficiency is high, the cost is low, and it can adapt to the requirements for rapid measurement of different products, and has high versatility.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. For the sake of concise description, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a kind of measurement tool is it is characterised in that include：

Supporting table, described supporting table is used for carrying workpiece to be measured；

First movable block and the second movable block, described first movable block, the second movable block are movably arranged on described supporting table respectively Adjacent two side wall, described first movable block, the second movable block can adjust in the horizontal direction respectively with described supporting table it Between distance；

Multiple locating parts, are arranged on the top surface of described supporting table, the first movable block and the second movable block, for described to be measured Workpiece clamping positions.

2. measurement tool according to claim 1 is it is characterised in that described locating part is alignment pin, in described supporting table Alignment pin be arranged at one side relative with described first movable block, the second movable block respectively.

3. according to claim 1 measurement tool it is characterised in that described supporting table respectively with described first movable block, The relative sidewall horizontal of second movable block is provided with least one pilot hole, described guiding in the hole and the first movable block, the second work It is connected with spring respectively, described first movable block, the correspondence position of the second movable block are respectively arranged with activity between motion block It is inserted in the connecting rod of described pilot hole, described spring housing exists located at described connecting rod, described first movable block, the second movable block Supported with the side wall of described supporting table respectively by the pulling force of described spring under naturalness and contact.

4. according to claim 3 measurement tool it is characterised in that described first movable block, the second movable block respectively with The relative side wall of described supporting table is provided with guide post, and described guide post is inserted in one of described guiding in the hole.

5. measurement tool according to claim 1 is it is characterised in that the top surface of described supporting table is vertically provided with Multiple location holes, described location hole activity is inserted with the positioning support column for supporting described workpiece to be measured.

6. measurement tool according to claim 5 is it is characterised in that described positioning support column includes the straight-bar being coaxially disposed Portion and head, described straight-bar portion activity is inserted in the described location hole supporting countertop, and the diameter in described straight-bar portion is less than described The diameter of head, described head is supported with the bottom surface of described workpiece to be measured and contacts.

7. measurement tool according to claim 1 is it is characterised in that the top surface of described supporting table is movable with described first Block, the top surface of the second movable block are located at same level.

8., it is characterised in that it also includes rotating disk, described rotating disk is circumferentially uniform for measurement tool according to claim 7 It is provided with multiple described supporting tables, described rotating disk can drive multiple described supporting tables to rotate.

9. a kind of measuring method using the arbitrary described measurement tool of such as claim 1～8 is it is characterised in that step includes：

There is provided workpiece to be measured, the bottom surface of described workpiece to be measured is plane；

Described first movable block, the second movable block are pulled to the direction away from described supporting table, described workpiece to be measured is put Be placed in the top surface of described supporting table, so that described workpiece to be measured is fitted with the top surface of described supporting table and side wall and surrounding positioning Pin supports；

Open detection instrument, measures to the workpiece to be measured in described supporting table, obtains the appearance profile number of workpiece to be measured According to or inner structure size data or profile data and inner structure size data combination.

10. a kind of measuring method using described measurement tool as arbitrary in claim 1～8 is it is characterised in that step bag Include：

There is provided workpiece to be measured, the positive and negative of described workpiece to be measured are respectively provided with jog；

According to the distribution of described workpiece reverse side jog to be measured, multiple described positioning support columns are plugged on described supporting table；

Described first movable block, the second movable block are pulled to the direction away from described supporting table, described workpiece to be measured is put It is placed in multiple described positioning support columns, so that the bottom surface of described workpiece to be measured is conflicted with described positioning support column and contact, and make institute State that workpiece to be measured is fitted with the top surface of described supporting table and side wall is supported with the alignment pin of surrounding；

Open detection instrument, measures to the workpiece to be measured in described supporting table, obtains the appearance profile number of workpiece to be measured According to or inner structure size data or profile data and inner structure size data combination.