CN214868818U

CN214868818U - Variable outer diameter positioning tool for drilling

Info

Publication number: CN214868818U
Application number: CN202120499389.4U
Authority: CN
Inventors: 韩祥安; 李毅杰; 孙路
Original assignee: Jiangsu Taizhou Middle School; Nanjing Leiboster Biotechnology Co ltd
Current assignee: Jiangsu Taizhou Middle School; Nanjing Leiboster Biotechnology Co ltd
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-11-26
Anticipated expiration: 2031-03-09

Abstract

The utility model relates to the technical field of machining, in particular to a variable outer diameter positioning tool for drilling, which comprises a rotating part, a fixing part and a positioning pin, wherein the upper part of the outer side of the fixing part is provided with a plurality of through grooves around the circumference of the fixing part, and each through groove is internally connected with the positioning pin in a sliding way; the fixing piece is vertically penetrated and a threaded hole is formed in the fixing piece; the rotating piece comprises an abutting section and a threaded section, the threaded section is in threaded connection with the threaded hole, the outer wall of the abutting section is non-vertical, and the abutting section can rotate along with the whole rotating piece to generate outward thrust on the positioning pin; the utility model discloses a rotate the piece and cooperate with the locating pin, at the in-process of rotating the piece tilting, the locating pin is contradicted on the hole of product work piece to there is the hole of slight difference in the adaptation internal diameter, it is variable to realize the external diameter, has improved the adaptability of frock to the product, has improved product quality, has improved the qualification rate.

Description

Variable outer diameter positioning tool for drilling

Technical Field

The utility model relates to a machining technology field, concretely relates to variable external diameter location frock for drilling.

Background

The drilling positioning tool is suitable for batch application of the same product to perform accurate drilling positioning. The existing drilling often has a little difference because of the internal diameter of the inner hole of the positioning tool of the same batch, and the eccentric quality problem can occur, so that the positioning tool fails.

SUMMERY OF THE UTILITY MODEL

First, technical problem to be solved

The utility model aims to provide a variable outer diameter positioning tool for drilling, which can adapt to inner hole positioning products with slightly different inner diameters; the tool is simple in structure, low in manufacturing cost and high in practicability.

Second, technical scheme

The utility model discloses a realize through following technical scheme: the utility model provides a variable external diameter positioning tool for drilling, which comprises a rotating part, a fixing part and a positioning pin, wherein a plurality of through grooves are arranged on the upper part of the outer side of the fixing part around the circumference of the fixing part, and the positioning pin is connected in each through groove in a sliding manner; the fixing piece is vertically communicated and is internally provided with a threaded hole; the rotation piece is including conflict section and screw thread section, screw thread section and screw hole threaded connection, the outer wall of conflict section is non-vertical form, the conflict section can be along with the whole rotation of rotating the piece and produce outside thrust to the locating pin.

Further, the collision section is inclined with a large upper part and a small lower part, and the inner end face of the positioning pin is in contact with the collision section and has the same inclination angle with the collision section.

Further, the thread transmission between the thread section and the threaded hole adopts a fine thread and a non-standard fine pitch thread.

Further, the cross section of the positioning pin is circular or rectangular, and both ends of the positioning pin are curved surfaces consistent with the contact surface.

Further, the rotating member further comprises a flange section for facilitating gripping.

Further, the outer end face of the rotating part is provided with a through hole matched with the outer diameter of the drill bit.

Further, the through grooves are four and are uniformly arranged around the circumferential direction of the fixing piece.

Third, beneficial effect

Compared with the prior art, the utility model, following beneficial effect has:

the utility model provides a variable external diameter location frock for drilling cooperatees through rotating a piece and locating pin, and at the in-process of rotating a tilting, the locating pin is contradicted on the hole of product work piece to there is the hole of slight difference in the adaptation internal diameter, it is variable to realize the external diameter, has improved the adaptability of frock to the product, has improved product quality, has improved the qualification rate, has reduced the rate of reprocessing, has saved manufacturing cost.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front cross-sectional view of the present invention in cooperation with a work piece;

fig. 3 is a bottom view of the present invention;

1-a rotating member; 2-a fixing piece; 3-positioning pins; 4-product workpiece; 11-a collision section; 12-a thread segment; 13-a through hole; 14-a flange section; 21-a through groove; 22-threaded hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, the present invention provides a variable outer diameter positioning tool for drilling, including a rotating member 1, a fixing member 2 and a positioning pin 3, wherein a plurality of through grooves 21 are formed on the upper portion of the outer side of the fixing member 2 around the circumferential direction thereof, and the positioning pin 3 is slidably connected in each through groove 21; the fixing piece 2 is vertically penetrated and is provided with a threaded hole 22; rotate piece 1 including conflict section 11 and screw thread section 12, screw thread section 12 and screw hole 22 threaded connection, the outer wall of conflict section 11 is non-vertical form, conflict section 11 can be along with the rotation of the whole of rotating piece 1 and produce outside thrust to locating pin 3.

The working principle is as follows: the up-and-down movement of the rotating part 1 is realized through the thread engagement transmission of the thread section 12 of the rotating part 1 and the thread hole 22 of the fixed part 2; the conflict section 11 of rotating piece 1 is non-vertical form, so at the in-process that reciprocates, can push up locating pin 3 and move to the outside of mounting 2, until the outer end of locating pin 3 is fixed in the hole of product work piece 4, realizes the location.

The above constitutes the basic structure of the present invention.

The invention will be further described with reference to specific examples:

as an embodiment of the present invention, the collision section 11 is a large-end-up inclined shape, and the inner end surface of the positioning pin 3 is in contact with the collision section 11 and has the same inclination angle as the collision section 11.

In this embodiment, the collision section 11 and the inner end surface of the positioning pin 3 can be tightly attached to each other due to the same inclination angle, so that the local stress concentration is reduced, and the positioning pin 3 is smoothly pushed to move outwards; in the embodiment, when the rotating member 1 is rotated to move downwards, the rotating member 1 props against the positioning pin 3 until the outer end of the positioning pin 3 is tightly abutted against the inner hole of the product workpiece 4, so that positioning is realized; during actual operation, generally earlier with rotate piece 1 and upwards remove for the location external diameter of locating pin 3 diminishes, makes things convenient for whole location frock to put into the hole of product work piece 4, puts into the back, rotates piece 1 screwing up, makes locating pin 3 move, realizes the location.

As an embodiment of the present invention, the thread transmission between the thread section 12 and the threaded hole 22 adopts a fine thread non-standard fine pitch thread to improve the positioning accuracy.

As an embodiment of the utility model, the cross section of locating pin 3 is circular or rectangle, the both ends of locating pin 3 are the curved surface unanimous with the contact surface to can not produce stress concentration, reduce life between the contact surface of the inner of assurance locating pin 3 and conflict section 11 and the outer end of locating

3 and 4 holes of product work piece.

As an embodiment of the present invention, the rotating member 1 further comprises a flange section 14 for easy grip.

As an embodiment of the utility model, rotate 1 outer terminal surface and offer the through-hole 13 that matches with drill bit external diameter size, there is strict matching relation between through-hole 13 and the drill bit, facilitate the use. Wherein the rotation direction of the drill bit needs to be consistent with the screwing direction of the screw thread, and the accuracy of tool positioning in the drilling process is ensured.

As an embodiment of the present invention, the through grooves 21 are four and are uniformly arranged around the circumference of the fixing member 2. When the device is used, the rotating piece 1 and the four positioning pins 3 are matched and positioned together, so that balance and stability are realized in the circumferential direction.

In each embodiment, the positioning tool can be quenched so as to prolong the service life.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.

Claims

1. The utility model provides a variable external diameter location frock for drilling which characterized in that: the positioning device comprises a rotating piece (1), a fixing piece (2) and positioning pins (3), wherein a plurality of through grooves (21) are formed in the upper part of the outer side of the fixing piece (2) in the circumferential direction of the fixing piece, and the positioning pins (3) are connected in each through groove (21) in a sliding manner; the fixing piece (2) is vertically penetrated and is internally provided with a threaded hole (22); rotate piece (1) including conflict section (11) and screw thread section (12), screw thread section (12) and screw hole (22) threaded connection, the outer wall of conflict section (11) is non-vertical form, conflict section (11) can be along with the whole rotation of rotating piece (1) and produce outside thrust to locating pin (3).

2. The variable outer diameter positioning tool for drilling according to claim 1, characterized in that: the collision section (11) is inclined with a large upper part and a small lower part, and the inner end face of the positioning pin (3) is in contact with the collision section (11) and has the same inclination angle with the collision section (11).

3. The variable outer diameter positioning tool for drilling according to claim 2, characterized in that: the thread transmission between the thread section (12) and the threaded hole (22) adopts fine-thread non-standard small-pitch threads.

4. The variable outer diameter positioning tool for drilling according to claim 1, characterized in that: the cross section of the positioning pin (3) is circular or rectangular, and both ends of the positioning pin (3) are curved surfaces consistent with the contact surface.

5. The variable outer diameter positioning tool for drilling according to any one of claims 1 to 4, wherein: the rotor (1) also comprises a flange section (14) which is convenient to hold.

6. The variable outer diameter positioning tool for drilling according to claim 5, characterized in that: the outer end face of the rotating piece (1) is provided with a through hole (13) matched with the outer diameter of the drill bit.

7. The variable outer diameter positioning tool for drilling according to claim 5, characterized in that: the number of the through grooves (21) is four, and the through grooves are uniformly arranged around the circumferential direction of the fixing piece (2).