CN214135189U - Detection pin for aligning quadrant hole of drill jig - Google Patents

Abstract

The invention relates to a detection pin for aligning a quadrant hole of a drill jig, belonging to the field of mechanical manufacturing; the detection pin is a hollow cylinder with an opening at one end, the closed end of the cylinder takes an axial section as a dividing surface, one side of the dividing surface is a half cone, the half cone is coaxial with the cylinder, and the cone angle is 45-60 degrees; the other side is a notch which is communicated with the inner hole of the cylinder and can visually observe the vertex of the half cone along the inner hole from the opening end of the cylinder; the heat treatment hardness of the detection pin is HRC 60-65. The detection pin can be used for processing end surface holes of shells with different specifications, the distance between the drill point and a quadrant line can be visually observed, the precision can reach 0.2mm, the technical requirement can be met, the use is convenient, the efficiency is high, and the requirement on the skill level of an operator is low.

Description

Detection pin for aligning quadrant hole of drill jig

Technical Field

The invention belongs to the field of machine manufacturing, and particularly relates to a detection pin for aligning a quadrant hole of a drill jig.

Background

In recent years, with the rapid increase of the task amount of shells in our company, the shells need to be processed by using a drill jig, at present, in the processing and production, a drill jig is used for aligning in a way that a drill matched with a drill jig pin hole is used for pre-drilling a central hole with the diameter of about 0.5mm on a product, and whether the center of the hole is positioned on a quadrant line is observed, the method requires that the skill level of an operator is higher, the drill jig is aligned for multiple times and adjusted, the method is not beneficial to batch production, only the precision of 0.4mm can be ensured, and the requirement that the distance between the central hole drilled by the drill jig and the quadrant line is not more than 0.2mm cannot be met.

Disclosure of Invention

The technical problem to be solved is as follows:

in order to avoid the defects of the prior art, the invention provides the detection pin for aligning the quadrant holes of the drill jig, and the defects of low processing efficiency and poor alignment precision of the alignment method in the prior art are overcome.

The technical scheme of the invention is as follows: a check pin for aligning a quadrant hole of a drill jig, comprising: the detection pin is a hollow cylinder with an opening at one end, the closed end of the cylinder takes an axial section as a dividing surface, one side of the dividing surface is a half cone, the half cone is coaxial with the cylinder, and the cone angle is 45-60 degrees; the other side is a notch which is communicated with the inner hole of the cylinder and can visually observe the vertex of the half cone along the inner hole from the opening end of the cylinder;

the heat treatment hardness of the detection pin is HRC 60-65.

The further technical scheme of the invention is as follows: the detection pin is made of high-strength steel tool steel T10A.

The further technical scheme of the invention is as follows: the diameter of the inner hole of the detection pin is 10-18 mm.

The further technical scheme of the invention is as follows: the axial height of the detection pin is 30-70 mm.

The further technical scheme of the invention is as follows: the detection pin is matched with a drill jig for processing the end face of the shell, the detection pin is in clearance fit with a quadrant hole of the drill jig, and the clearance is 0.01-0.02 mm.

Advantageous effects

The invention has the beneficial effects that: the detection pin can be used for processing end surface holes of shells with different specifications, the gap between the excircle of the detection pin and a pin hole of a drilling jig is 0.01-0.02mm, one half of a 60-degree conical surface at the tail part is reserved for cutting as a positioning reference, the 60-degree conical surface forms a sharp point, the distance between a drill point and a quadrant line can be visually observed through the hollow inner circle of the detection pin, the precision can reach 0.2mm, the process requirement can be met, the use is convenient, the efficiency is high, and the requirement on the skill level of an operator is low.

Drawings

FIG. 1 is a schematic view of the use of the detection pin of the present invention;

FIG. 2 is a partial structural schematic view of a drill jig;

FIG. 3 is a schematic diagram of a quadrant detection pin configuration;

FIG. 4 is an isometric view of a quadrant detector pin;

FIG. 5 is a partial structural view of the drill jig;

FIG. 6 is a schematic view of the position of the jig alignment line;

FIG. 7 is an assembly schematic of a jig set screw;

FIG. 8 is a schematic view of the housing;

FIG. 9 is a top view of FIG. 8;

FIG. 10 is a schematic view of the alignment jig and the skirt groove;

description of reference numerals: 1. a detection pin; 2. producing a product; 3. drilling a mold; 4. drilling a sleeve; 5. tightening the screw; 6. a housing.

Detailed Description

The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The first embodiment is as follows:

the embodiment is a detection pin for aligning a quadrant hole of a drill jig, wherein the detection pin 1 is a hollow cylinder, the excircle of the cylinder is in clearance fit with the drill jig hole, and the clearance is 0.01-0.02 mm; the tail part is a 60-degree conical surface, the inner circle at the position of the 60-degree conical surface is solid, the conical surface is partially cut and kept by one half, and the 60-degree conical surface forms a sharp point.

During the use, place jig 3 on product 2, tentatively adjust product 2 on I quadrant line and jig I quadrant pinhole in 1-2mm, will detect round pin 1 and put into the jig pinhole, rotatory detection round pin 1 repeatedly, follow the interior cylinder observation of hollow, the distance of 1 sharp point of inspection round pin and 2 terminal surface quadrant lines of product, adjust jig 3 simultaneously, the range estimation is examined until the distance of detecting 1 sharp point of round pin and 2 terminal surface quadrant lines of product is not more than 0.2mm, and the side can process.

In the embodiment, the product 2 to be processed is a shell skirt end surface hole, and the quadrant detection pin has an outer diameter phi of 14mm, a length of 70mm and an inner hole diameter phi of 10 mm.

The invention realizes high-efficiency and high-quality production and has the characteristics of reliability and low production cost.

Example two:

the embodiment is a detection pin 1 for aligning a quadrant hole of a drill jig, wherein the detection pin 1 is a hollow cylinder, the excircle of the cylinder is in clearance fit with the hole of the drill jig, and the clearance is 0.01-0.02 mm; the tail part is a 60-degree conical surface, the inner circle at the position of the 60-degree conical surface is solid, the conical surface is partially cut and kept by one half, and the 60-degree conical surface forms a sharp point.

During the use, place jig 3 on the product, tentatively adjust I quadrant line on the product and I quadrant pinhole of jig in 1-2mm, will detect round pin 1 and put into the jig pinhole, rotatory detection round pin repeatedly, follow the interior cylinder observation of hollow, the inspection is detected the distance of round pin point and product terminal surface quadrant line, adjusts jig 3 simultaneously, when the distance of detecting round pin point and product terminal surface quadrant line is not more than 0.2mm, can process.

In the embodiment, the product to be processed is a shell joint end surface hole, and the quadrant detection pin has the diameter phi of 18mm, the length of 50mm and the inner circle diameter phi of 14 mm.

The invention realizes high-efficiency and high-quality production and has the characteristics of reliability and low production cost. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (5)

1. A check pin for aligning a quadrant hole of a drill jig, comprising: the detection pin is a hollow cylinder with an opening at one end, the closed end of the cylinder takes an axial section as a dividing surface, one side of the dividing surface is a half cone, the half cone is coaxial with the cylinder, and the cone angle is 45-60 degrees; the other side is a notch which is communicated with the inner hole of the cylinder and can visually observe the vertex of the half cone along the inner hole from the opening end of the cylinder;

the heat treatment hardness of the detection pin is HRC 60-65.

2. The inspection pin for use in aligning a die quadrant hole of a drill as defined in claim 1, wherein: the detection pin is made of high-strength steel tool steel T10A.

3. The inspection pin for use in aligning a die quadrant hole of a drill as defined in claim 1, wherein: the diameter of the inner hole of the detection pin is 10-18 mm.

4. The inspection pin for use in aligning a die quadrant hole of a drill as defined in claim 1, wherein: the axial height of the detection pin is 30-70 mm.

5. The inspection pin for use in aligning a die quadrant hole of a drill as defined in claim 1, wherein: the detection pin is matched with a drill jig for processing the end face of the shell, the detection pin is in clearance fit with a quadrant hole of the drill jig, and the clearance is 0.01-0.02 mm.

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