CN219511451U

CN219511451U - Symmetry detection device for rod pin punching

Info

Publication number: CN219511451U
Application number: CN202320060628.5U
Authority: CN
Inventors: 赵勇
Original assignee: Tianjin Putian Isolator Co ltd
Current assignee: Tianjin Putian Isolator Co ltd
Priority date: 2023-01-10
Filing date: 2023-01-10
Publication date: 2023-08-11
Anticipated expiration: 2033-01-10

Abstract

The utility model provides a rod pin punching symmetry detection device which comprises a bottom plate, a dial indicator fixing support arranged on one side of the bottom plate, two dial indicators arranged on the dial indicator fixing support in parallel and a positioning pin arranged on the bottom plate and used for positioning a rod pin, wherein the bottom plate is obliquely arranged, the positioning pin adopts a quadrangular structure, the top of the positioning pin is in a frustum-shaped design, the punching hole is sleeved on the positioning pin, and a lower ejector rod used for supporting the rod pin is arranged at the bottom of the rod pin. The utility model has simple structural design and simple manufacturing process, and the portable gauge can be applied to on-site on-line detection, can prevent the continuous occurrence of defective products and stop damage in time; the bidirectional limiting is adopted, so that the position with the largest error can be accurately judged, and the inspection operation is convenient and quick.

Description

Symmetry detection device for rod pin punching

Technical Field

The utility model relates to the technical field of detection devices, in particular to a device for detecting symmetry of rod pin punching.

Background

In the processing process of the rod pin, because the positioning of the punching tool is unreliable, the center lines of the two holes are easily misaligned with the center line of the product, the phenomenon is uncertain, and the rod pin has various forms such as symmetrical rotation offset, unilateral rotation offset, center line translation and the like, and no effective means is provided for on-site detection of the rod pin.

The full calipers of the inspector are used for measuring and judging that the labor intensity is high, and the fatigue pain serious by hands is measured. The inspection efficiency is low.

The center lines of the two holes are coincident with the center line of the shaft body of the product, which is the most ideal state. However, some deviation can occur in the punching process of the product, the drawing requires that the symmetry degree is not more than 0.4, namely, the two hole axes and the middle shaft body axis cannot occur unidirectional deviation exceeding 0.2.

Because the appearance and the shape of the product determine that no good detection method exists, the detection method at the present stage can only judge by measuring the wall thickness after punching, and the judgment method does not really meet the requirement of the design standard of the product, namely the detection standard is not coincident with the design standard, the detection method is unreasonable, and misjudgment is easy to cause. The shape is a natural shape, is not a regular shape, and cannot be used as an inspection standard.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a rod pin punching symmetry detection device, which can realize accurate measurement of the physical state, reduce the inspection cost and improve the inspection efficiency.

Based on the problems, the technical scheme provided by the utility model is that the rod pin punching symmetry detection device comprises a bottom plate and a positioning pin arranged on the bottom plate and used for positioning the rod pin, wherein the bottom plate is obliquely arranged, the positioning pin adopts a quadrangular structure, the top part of the positioning pin is designed as a conical head, the punching pin is sleeved with the positioning pin, and the bottom of the rod pin is provided with a lower ejector rod used for supporting the rod pin.

The four edges of the locating pin are cut into small-area planes along the length direction of the edges to form small edge surfaces, and the small edge surfaces of the locating pin control the axial and radial degrees of freedom of the product.

When the metering type detection is selected, the metering type detection device further comprises a dial indicator support arranged on one side of the bottom plate and two dial indicators arranged on the dial indicator fixing support in parallel, wherein the dial indicator points to two sides of the intermediate shaft body of the product.

Further, the inclination angle of the bottom plate and the horizontal plane is 45 degrees.

Further, a supporting rod is vertically arranged at the bottom of the bottom plate, and the supporting rod and the dial indicator fixing support are located on the same plane.

When the counting type detection is selected, the counting type detection device comprises four limit posts positioned on two sides of a product intermediate shaft body.

Further, the spacing dimension between the limit posts is set by the maximum asymmetry value of the two hole axes and the intermediate shaft axis.

The utility model has the advantages and beneficial effects that:

the utility model has simple structure, easy manufacture, reduced volume of the detection body, light weight and more convenient use; the structure is slightly adjusted to perform two modes of counting type or metering type detection, so that the maximum physical deviation size of the product can be accurately measured, and specific data can be measured; in the design of the detection device, double-position measurement is adopted, namely, two holes are used as measurement positioning references, and 2 dial indicators are adopted to measure the physical dimension of the product, so that the position with the largest error can be accurately judged, and the data acquisition required by the capacity analysis applied to the production process can be met; the oblique angle placement is more advantageous for handling and visual observation of the meter reading.

Drawings

Fig. 1 is a side view of a detection device according to embodiment 1 of the present utility model.

Fig. 2 is a plan view of the detection device of embodiment 1 of the present utility model.

Fig. 3 is a schematic view illustrating a usage state of the detecting device according to embodiment 1 of the present utility model.

Fig. 4 is a schematic structural diagram of a detection device in embodiment 2 of the present utility model.

In the figure: 1. a bottom plate; 2. a positioning pin; 3. a lower ejector rod; 4. a dial indicator fixing bracket; 5. a dial indicator; 6. a support rod; 7. and a limit column.

Detailed Description

The following detailed description of specific embodiments of the utility model refers to the accompanying drawings.

Example 1

As shown in fig. 1-3, the rod pin punching symmetry detection device belongs to a metering type detection device, and comprises a bottom plate 1, a dial indicator fixing support 4 arranged on one side of the bottom plate 1, two dial indicators 5 arranged on the dial indicator fixing support 4 in parallel and a positioning pin 2 arranged on the bottom plate 1 and used for positioning the rod pin, wherein the bottom plate 1 is obliquely arranged, the positioning pin 2 adopts a quadrangular structure, the top part is designed as a conical head, the product is conveniently put in and taken out, and scratches in a product hole during measurement can be avoided; the punching sleeve is sleeved on the positioning pin 2, and a lower ejector rod 3 which is convenient for taking and supports the product is arranged at the bottom of the rod pin.

The four edges of the locating pin 2 are cut into small-area planes along the length direction of the edges to form small edges, the locating pin 2 is selected to be small in locating clearance as far as possible, the small edges of the locating pin 2 control the axial and radial freedom degrees of a product and reduce the contact area with the inside of a product hole, and preferably, two opposite small edges and a transverse central shaft of the product are located on the same straight line, and two opposite edges and a longitudinal central shaft of a punched hole are located on the same straight line.

The bottom of the bottom plate 1 is provided with a sinking groove, a fastening screw is arranged in the sinking groove, and the bottom of the dial indicator fixing bracket 4 is fixed on the bottom plate 1 through the fastening screw.

Wherein, set up on the bottom plate 1 with lower ejector pin 3 matched with at least one connecting hole, connecting hole degree of depth can extend to bottom plate 1 bottom surface to guarantee lower ejector pin 3's steadiness.

Wherein, locating pin 2 bottom body coupling diameter is less than locating pin 2 upper end diameter's connecting portion, sets up on the bottom plate 1 with connecting portion matched with fixed round hole, and the size of fixed round hole needs to guarantee locating pin 2 rotatable.

Preferably, the inclination angle between the bottom plate 1 and the horizontal plane is 45 degrees, which is beneficial to operation and visual observation.

Further, a supporting rod 6 is vertically arranged at the bottom of the bottom plate 1, and the supporting rod 6 and the dial indicator fixing support 4 are located on the same plane.

During measurement, two holes are used as measurement positioning references, the small prism surface of the quadrangular positioning pin 2 is used for controlling the axial and radial degrees of freedom of the product, 2 dial indicators 5 are used for measuring the physical appearance size of the product, and the single-side size is controlled within < + -0.2 to judge whether the product is qualified or not, and the single-side size exceeds 0.2 to judge whether the product is unqualified. Meanwhile, the specific value of the product offset can be judged, and the metering type measurement is realized.

Example 2

As shown in fig. 4, the rod pin punching symmetry detection device belongs to a counting type detection device, and comprises a bottom plate 1 and a positioning pin 2 arranged on the bottom plate 1 and used for positioning the rod pin, wherein the bottom plate 1 is obliquely arranged, the positioning pin 2 adopts a quadrangular structure, the top part is designed into a conical head, the product is conveniently put in and taken out, and the scratch in a product hole during measurement can be avoided; the punching sleeve is sleeved on the positioning pin 2, and a lower ejector rod 3 which is convenient for taking and supports the product is arranged at the bottom of the rod pin. And the device also comprises four limit posts 7 positioned on two sides of the intermediate shaft body of the product.

Wherein, the distance between two spacing posts 7 in the width direction of the product is equal to the width of the intermediate shaft body of the product.

Wherein, locating pin 2 bottom body coupling diameter is less than locating pin 2 upper end diameter's connecting portion, sets up on the bottom plate 1 with connecting portion matched with fixed round hole, and the size of fixed round hole needs to guarantee locating pin 2 rotatable. The connection mode of the limit column 7 and the bottom plate 1 is the same as the connection mode of the locating pin 2 and the bottom plate 1.

During measurement, 1) two holes are used as measurement positioning references; 2) The positioning gap is reduced as much as possible by the proper size of the positioning pin 2. The quadrangular locating pin 2 is adopted, and the small prismatic surface is used for controlling the axial and radial (deflection displacement) degrees of freedom of the product, and reducing the contact area with the inside of a product hole;

3) The space size of the 4 limit pins 7 is set according to the maximum asymmetry value of the axes of the two holes and the axis of the intermediate shaft body, so that unqualified products are prevented, the physical dimension of the products is controlled, if the products can be smoothly put in the products, the products are judged to be qualified, and if the products cannot be put in the products, the interference clamping stagnation occurs, and the products are judged to be unqualified.

The foregoing describes several embodiments of the present utility model in detail, but the description is merely a preferred embodiment of the utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a symmetry detection device that punches a hole of pole round pin, includes the bottom plate and sets up the locating pin that is used for the locating lever round pin on the bottom plate, its characterized in that: the bottom plate is placed in an inclined mode, the positioning pin adopts a quadrangular structure, the top of the positioning pin is provided with a conical head, the positioning pin is sleeved with the punching hole, and the bottom of the rod pin is provided with a lower ejector rod for supporting the rod pin.

2. The bar pin punch symmetry detection device of claim 1, wherein: the four edges of the locating pin are cut into small-area planes along the length direction of the edges to form small edge surfaces, and the small edge surfaces of the locating pin control the axial and radial degrees of freedom of the product.

3. The bar pin punch symmetry detection device of claim 2, wherein: the dial indicator comprises a dial indicator bracket arranged on one side of a bottom plate and two dial indicators arranged on the dial indicator fixed bracket in parallel, wherein the dial indicator points to the two sides of a middle shaft body of a product.

4. A bar pin punch symmetry detection device according to claim 3, wherein: the inclination angle of the bottom plate and the horizontal plane is 45 degrees.

5. The bar pin punch symmetry detection device of claim 4, wherein: the bottom of the bottom plate is vertically provided with a supporting rod, and the supporting rod and the dial indicator fixing support are positioned on the same plane.

6. The bar pin punch symmetry detection device of claim 2, wherein: comprises four limit posts positioned at two sides of a middle shaft body of the product.

7. The bar pin punch symmetry detection device of claim 6, wherein: the spacing dimension between the limiting columns is set by the maximum asymmetry value of the axes of the two holes and the axis of the intermediate shaft body.