WO2023284048A1 - Multi-section shaft type product measurement device and using method therefor - Google Patents

Abstract

A multi-section shaft type product measurement device (100) for measuring the length and diameter of each section of a multi-section shaft type product (6). The multi-section shaft type product measurement device (100) comprises a horizontal guide rail (2), a detection device (3) arranged on the horizontal guide rail (2), and a support member (4) fixed relative to the horizontal guide rail (2). The detection device (3) is slidably arranged along the horizontal guide rail (2), and the detection device (3) comprises a light emitter (31) and a light receptor (32) which are oppositely and fixedly arranged, the light emitter (31) emitting light toward the light receptor (32). The support member (4) supports the multi-section shaft type product (6), the multi-section shaft type product (6) is located between the light emitter (31) and the light receptor (32) to shield light rays, and the extending direction of the horizontal guide rail (2) is perpendicular to the plane where the light rays emitted by the light emitter (31) are located. By means of the multi-section shaft type product measurement device (100) and a using method therefor, the length and diameter of each section of the multi-section shaft type product (6) can be measured with a higher precision and a high measurement efficiency.

Description

Measuring device for multi-section shaft products and method of use thereof technical field

The invention relates to a measuring device for multi-section shaft products and a method for using the same.

Background technique

Shaft products with multiple sections are widely used in mechanical systems and machining, such as crankshafts and cams in internal combustion engines and pen holder molds, etc. Since each section of multi-section shaft products has specific functions, the outer diameter and length accuracy of each section directly affect the life of the mechanical system and the quality of machining. Therefore, it is necessary to measure the outer diameter and length of each section of multi-section shaft products to meet the requirements, remove bad multi-section shaft products and feedback control the processing technology of multi-section shafts, ensure the accuracy of multi-section shaft products, and ensure Mechanical system life and machining quality of multi-section shaft products.

Traditionally, multi-section shaft products mainly use projection measurement and pixel size measurement to measure the outer diameter and length of each section. Projection measurement has high requirements for operators. The position of each section of the product is marked with the naked eye, and the purpose of measuring the outer diameter of each section is achieved through grayscale calculation. The measurement efficiency of this method is low and the measurement results are greatly affected by human factors, and it is impossible to improve the measurement accuracy through measurement error separation, which has gradually failed to meet the high-efficiency and high-precision measurement requirements of the industry. The pixel measurement method uses the area array CCD to capture the two-dimensional profile of the workpiece, and achieves the purpose of measuring the outer diameter and length by calculating the number of pixels between any two features. The micron-level pixel size determines that pixel measurement can only achieve a measurement accuracy of 10 micron level, and at the same time, the splicing measurement used in the measurement of large-sized workpieces will further reduce the accuracy of pixel measurement.

In view of this, it is necessary to improve the existing multi-section shaft product measuring device to solve the above problems.

Contents of the invention

The object of the present invention is to provide a measuring device for multi-section shaft products, so as to solve the problems of low efficiency and low measuring precision of diameter and length measurement of existing detection devices.

In order to achieve the above object, the present invention provides a measuring device for multi-section shaft products, which is used to measure the length and diameter of each joint shaft of multi-section shaft products. The detection device on the horizontal guide rail and the support relatively fixed to the horizontal guide rail, the detection device is slidably arranged along the horizontal guide rail, the detection device includes a relatively fixed light emitter and a light receiver, the light emitter The device emits light toward the light receiver, the support supports the multi-section shaft product, the multi-section shaft product is located between the light emitter and the light receiver to block light, and the horizontal guide rail extends in the direction perpendicular to the plane where the illuminator emits light.

As a further improvement of the present invention, the multi-section shaft product measuring device further includes a base, and the horizontal guide rail and the support member are fixed on the base.

As a further improvement of the present invention, the support includes a column and an electromagnet, the multi-section shaft product is made of ferromagnetic material, and the multi-section shaft product is fixed on the electromagnet.

As a further improvement of the present invention, the plane where the axis of the multi-section shaft product is located is perpendicular to the plane where the horizontal guide rail is located and the plane where the light is located.

As a further improvement of the present invention, the angle between the axis of the multi-section shaft product and the plane where the horizontal guide rail is located is 6 degrees.

As a further improvement of the present invention, the detection device includes a fixed base for fixing the light emitter and the light receiver, the horizontal guide rail includes a guide rail and a slide plate matched with the fixed base, and the slide plate can move along the The guide rail moves.

As a further improvement of the present invention, the light emitter includes a light emitting window facing the light receiver, the light receiver includes a light receiving window facing the light emitter, the light emitting window is used to generate light, and the multi-section shaft product When blocking light, the light-receiving window is divided into an upper light-transmitting area, a shielding area and a lower light-transmitting area from top to bottom.

As a further improvement of the present invention, the multi-section shaft product measuring device further includes a controller electrically connected to the light receiver, the horizontal guide rail and the support, and a host computer electrically connected to the controller.

The present invention also provides a method of using the multi-section shaft product measuring device as described above, and the use method of the multi-section shaft product measurement device includes the following steps:

S1: fixing multi-section shaft products on the support;

S2: controlling the detection device to move along the horizontal guide rail, so that the multi-section shaft product passes between the light emitter and the light receiver;

S3: Calculate and obtain the diameter and length of each section of the multi-section shaft product according to the projection of the multi-section shaft product on the light receiver.

As a further improvement of the present invention, the plane where the axis of the multi-section shaft product is located is perpendicular to the plane where the horizontal guide rail is located and the plane where the light is located, and the angle between the axis of the multi-section shaft product and the plane where the horizontal guide rail is located is α degree, the light emitter includes a light-emitting window facing the light receiver, the light receiver includes a light-receiving window facing the light emitter, the light-emitting window is used to generate light, and when the multi-section shaft product blocks the light , the light-receiving window is divided into an upper light-transmitting area, a shielding area, and a lower-edge light-transmitting area from top to bottom, then the diameter of a section in step S3 is calculated as: diameter D=corresponding shielding area width d*cosα, step The calculation method of the length of each section in S3 is: according to the width change of the upper or lower light transmission area, the distance between two adjacent end faces is detected to be l, then the length L=l/cosα.

The beneficial effect of the present invention is that: the multi-section shaft product measuring device and the use method thereof of the present invention can measure the length and diameter of each section of the multi-section shaft product with higher precision and high measurement efficiency.

Description of drawings

Fig. 1 is the schematic diagram of the three-dimensional structure of the multi-section shaft product measuring device of the present invention;

Fig. 2 is a top view structural schematic diagram of the multi-section shaft product measuring device of the present invention;

Fig. 3 is a schematic structural view of the measuring device of the multi-section shaft product measuring device of the present invention;

Fig. 4 is the front structural schematic view of the measuring device of the multi-section shaft product measuring device of the present invention;

Fig. 5 is a schematic diagram of the light-receiving window of the multi-section shaft product measuring device of the present invention;

Fig. 6 is a schematic diagram of light and multi-section shaft products when the multi-section shaft product measuring device of the present invention detects multi-section shaft products;

Fig. 7 is a schematic structural diagram of a multi-section shaft product detected by the multi-section shaft product measuring device of the present invention.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

As shown in FIGS. 1 to 7 , the multi-section shaft product measuring device 100 of the present invention is used to measure the length and diameter of each section shaft of the multi-section shaft product 6 . In this embodiment, the multi-section shaft product measuring device 100 is mainly used to detect multi-section shaft products 6 whose diameters gradually become smaller.

As shown in Figures 1 to 2, the multi-section shaft product measuring device 100 includes a base 1, a horizontal guide rail 2, a detection device 3 arranged on the horizontal guide rail 2, and a support relatively fixed to the horizontal guide rail 2 Part 4, controller 5 and upper computer 51.

The horizontal guide rail 2 and the support member 4 are fixed on the base 1 .

The support 4 supports the multi-section shaft product 6, the support part 4 includes a column 41 and an electromagnet 42, the multi-section shaft product 6 is made of ferromagnetic material, and the multi-section shaft product 6 is fixed on the electromagnet 42. After electrification, the electromagnet 42 generates magnetism, and the multi-section shaft product 6 can be fixed, and after the power is turned off, the electromagnet 42 loses magnetism, and the multi-section shaft product 6 can be removed. In this embodiment, the end of the multi-section shaft product 6 with a larger diameter is fixed to the electromagnet 42 .

As shown in Figures 3 and 4, the detection device 3 is slidably arranged along the horizontal guide rail 2, and the detection device 3 includes a relatively fixed light emitter 31 and a light receiver 32 for fixing the light emitter 31 And the fixed base 33 of the light receiver 32.

The horizontal guide rail 2 includes a guide rail 21 and a slide plate 22 matched with the fixed base 33 , and the slide plate 22 can move along the guide rail 21 .

The light emitter 31 emits light 34 toward the light receiver 32 , and the multi-section shaft product 6 is located between the light emitter 31 and the light receiver 32 to block the light 34 .

5 to 7, the light emitter 31 includes a light emitting window 311 disposed toward the light receiver 32, and the light receiver 32 includes a light receiving window 321 facing the light emitter 31, and the light emitting window 311 is used to generate Light 34, when the multi-section shaft product 6 blocks the light 34, a sensing area 35 is formed on the light-receiving window 321, and the sensing area 35 is divided into an upper edge light-transmitting area 352, a blocking area 351 and The lower edge is along the transparent area 353 . The length and diameter information of each section of the multi-section shaft product 6 can be obtained according to the occlusion data of each section of the light-receiving window 321 .

The extending direction of the horizontal guide rail 2 is perpendicular to the plane where the light emitter 31 emits the light 34 .

The plane of the axis of the multi-section shaft product 6 is perpendicular to the plane of the horizontal guide rail 2 and the plane of the light 34 . In the following calculations, the angle between the axis of the multi-section shaft product 6 and the plane where the horizontal guide rail 2 is located is set to α degrees. Preferably, the included angle between the axis of the multi-section shaft product 6 and the plane where the horizontal guide rail 2 is located is 6 degrees.

By setting the multi-section shaft product 6 obliquely, the information between the end surfaces of each section can be obtained conveniently from the upper light transmission area 352 or the lower light transmission area 353 , and the length information can be better calculated.

The controller 5 is electrically connected to the light receiver 32 , the horizontal guide rail 2 and the support 4 , and the host computer 51 is electrically connected to the controller 5 . The controller 5 is used to receive the information of the upper light transmission area 352, the shielding area 351 and the lower light transmission area 353 of the light receiver 32 and send it to the upper computer 51 for calculation, and at the same time control the detection device 3 Moving along the horizontal guide rail 2, the electromagnet 42 on the support member 4 can also be controlled to absorb or release the multi-section shaft product 6 at the same time.

Set the multi-section shaft product 6 into three sections, each section from large to small is the first section 61, the second section 62, and the third section 63, and the corresponding end faces are respectively the first end face 611 and the second end face 621. The third end face 631. According to the angle between the multi-section shaft product 6 and the horizontal guide rail 2, the data of the upper light transmission area 352 or the lower light transmission area 353 can be used, as long as the intersection point between each section and the end surface can be determined.

The method for using the above multi-section shaft product measuring device 100 includes the following steps:

S1: Fix the multi-section shaft product 6 on the support member 4, that is, place the end of the multi-section shaft product 6 with a larger diameter on the electromagnet 42, and then energize the multi-section shaft product 6 fixed;

S2: Control the detection device 3 to move along the horizontal guide rail 2, so that the multi-section shaft product 6 passes between the light emitter 31 and the light receiver 32, preferably, the multi-section shaft product Product 6 passes through at a constant speed, and the set speed is v;

S3: Calculate the diameter and length of each section of the multi-section shaft product 6 according to the projection of the multi-section shaft product 6 on the light receiver 32 .

Further, the calculation method of the diameter D is to detect the average width d of the shielding area 351 corresponding to each section, and then multiply it by the cosine value of the angle between the workpiece and the X axis, so as to eliminate the influence of the Abbe error on the measured value of the outer diameter , diameter D=width d*cosα of the corresponding shielding area 351 .

The calculation method of the length of each section in step S3 is: according to the width change of the upper light transmission area 352 or the lower light transmission area 353, it is detected that the distance between two adjacent end faces is l, then the length L=l / cos α. If the length of the first section 61 is calculated, the starting point of the first section 61 and the intersection position between the first section 61 and the end surface 611 are fitted according to the width of the upper light-transmitting area 352, and the movement between the two positions time t, the calculated distance between two adjacent end faces is l=v*t. It should be noted that the distance between two adjacent end faces is the distance along the horizontal direction. According to the length L=l/cosα, the corresponding The length of a section. Each other section is calculated in the same way.

The multi-section shaft product measuring device 100 and its usage method of the present invention can measure the length and diameter of each section of the multi-section shaft product 6 with higher precision and high measurement efficiency.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, 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 measuring device for multi-section shaft products, used to measure the length and diameter of each joint shaft of multi-section shaft products, characterized in that: the multi-section shaft product measuring device includes a horizontal guide rail, and is arranged on the horizontal guide rail detection device, a support relatively fixed to the horizontal guide rail, the detection device is slidably arranged along the horizontal guide rail, the detection device includes a relatively fixed light emitter and a light receiver, and the light emitter faces the The light receiver emits light, the support supports the multi-section shaft product, and the multi-section shaft product is located between the light emitter and the light receiver to block light, and the horizontal guide rail extends in the same direction as the light-emitting The plane in which the light is emitted by the sensor is perpendicular.
2. The device for measuring multi-section shaft products according to claim 1, wherein the device for measuring multi-section shaft products further comprises a base, and the horizontal guide rail and the support member are fixed on the base.
3. The multi-section shaft product measuring device according to claim 1, characterized in that: the support includes a column and an electromagnet, the multi-section shaft product is made of ferromagnetic material, and the multi-section shaft product fixed on the electromagnet.
4. The multi-section shaft product measuring device according to claim 1, wherein the plane where the axis of the multi-section shaft product is located is perpendicular to the plane where the horizontal guide rail is located and the plane where the light is located.
5. The multi-section shaft product measuring device according to claim 4, wherein the angle between the axis of the multi-section shaft product and the plane where the horizontal guide rail is located is 6 degrees.
6. The multi-section shaft product measuring device according to claim 5, wherein the detection device includes a fixed base for fixing the light emitter and the light receiver, and the horizontal guide rail includes a guide rail and a fixed base connected to the fixed base. Cooperating slide plate, the slide plate can move along the guide rail.
7. The multi-section shaft product measuring device according to claim 1, wherein the light emitter includes a light emitting window facing the light receiver, the light receiver includes a light receiving window facing the light emitter, and the light emitting window To generate light, when the multi-section shaft product blocks light, the light-receiving window is divided into an upper light-transmitting area, a shielding area and a lower light-transmitting area from top to bottom.
8. The multi-section shaft product measuring device according to claim 1, characterized in that: the multi-section shaft product measurement device further includes a controller electrically connected to the light receiver, the horizontal guide rail and the support, and the controller The host computer that is electrically connected.
9. A method for using the measuring device for multi-section shaft products according to any one of claims 1-8, characterized in that: the method for using the device for measuring multi-section shaft products includes the following steps:

   S1: fixing multi-section shaft products on the support;

   S2: controlling the detection device to move along the horizontal guide rail, so that the multi-section shaft product passes between the light emitter and the light receiver;

   S3: Calculate and obtain the diameter and length of each section of the multi-section shaft product according to the projection of the multi-section shaft product on the light receiver.
10. The method of using the multi-section shaft product measuring device according to claim 9, wherein the plane where the axis of the multi-section shaft product is located is perpendicular to the plane where the horizontal guide rail is located and the plane where the light is located, and the multi-section shaft product The included angle between the axis of shaft products and the plane where the horizontal guide rail is located is α degrees, the light emitter includes a light emitting window facing the light receiver, the light receiver includes a light receiving window facing the light emitter, and the light emitting window To generate light, when the multi-section shaft product blocks light, the light-receiving window is divided into an upper light transmission area, a shielding area, and a lower light transmission area from top to bottom, and the diameter of a section in step S3 The calculation is: diameter D=the width of the corresponding shielding area d*cosα, the calculation method of the length of each section in step S3 is: according to the width change of the upper or lower light transmission area, two adjacent The distance between the end faces is l, then the length L=l/cosα.

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