CN216544448U

CN216544448U - A divide well stick for precision mold processing

Info

Publication number: CN216544448U
Application number: CN202122992600.9U
Authority: CN
Inventors: 赵威; 邓兴国
Original assignee: Sichuan Kesi Precision Mould Co ltd
Current assignee: Sichuan Kesi Precision Mould Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-17
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a centering rod for machining a precision die, and belongs to the technical field of machining auxiliary tools. A centering bar for precision mold processing, comprising: the base, the extension bar and the center dividing head are connected in sequence; the center-dividing head comprises: the round head and the square head are concentrically arranged, and the cross sectional area of the round head is larger than that of the square head. The base is used for being connected with the positioning plate and is convenient to fix on a machine tool spindle. The extension bar enables the center-dividing head to be close to the workpiece, and the axial moving length of the machine tool spindle is reduced. When the workpiece needs to be placed at an angle for machining, one corner of the workpiece can be contacted with the square head, and the other corner of the workpiece is contacted with the round head, so that the machining reference of the inclined workpiece is determined; when a boss is arranged at the top of the processing base to block a workpiece of the processing base, the edge of the round head can be in contact with the surface of the workpiece below the boss, so that the boss is avoided, and the function of determining the reference is achieved.

Description

A divide stick in for precision mold processing

Technical Field

The utility model relates to the technical field of machining auxiliary tools, in particular to a centering rod for machining a precision die.

Background

In the production of injection mold workpieces, a common centering rod is a 5MM ball head-shaped centering rod when the workpiece is set to be in a reference state in electric spark machining, the centering rod is limited to touch a plane only, the reference is difficult to accurately find when the workpiece needs to swing the angle and needs to touch a workpiece edge point, and positioning and centering can be completed by means of other tools. And when the reference is blocked on a special workpiece below, the reference cannot be found by the centering rod. Therefore, the prior art centering rod has the problem of large use limitation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a centering rod for machining a precision die, and aims to solve the problem that the centering rod in the prior art is high in use limitation.

The technical scheme for solving the technical problems is as follows:

a centering bar for precision mold processing, comprising: the base, the extension bar and the center dividing head are connected in sequence;

the center dividing head comprises: connect the bulb at extension rod tip and keep away from extension rod and the square head of being connected with the bulb terminal surface, square head and extension rod set up with one heart, and the cross sectional area of bulb head is greater than the cross sectional area of square head.

The base is used for being connected with the positioning plate and is convenient to fix on a machine tool spindle. The extension bar enables the center-dividing head to be close to the workpiece, and the axial moving length of the machine tool spindle is reduced. When the workpiece needs to be placed at an angle for machining, one corner of the workpiece can be contacted with the square head, and the other corner of the workpiece is contacted with the round head, so that the machining reference of the inclined workpiece is determined; when a boss is arranged at the top of the processing base to block a workpiece of the processing base, the edge of the round head can be in contact with the surface of the workpiece below the boss, so that the boss is avoided, and the function of determining the reference is achieved.

Further, the extension bar includes: the base is provided with a conical section connected with the base and a cylindrical section connected between the conical section and the round head, and the sectional area of the conical section is gradually reduced along the direction far away from the base.

The extension bar provided by the utility model has the advantages that the conical section is arranged, the function of extending the center-dividing head is achieved, meanwhile, the connection strength between the extension bar and the base is increased, and therefore, the change of the coaxiality of the center-dividing head after long-term use is avoided.

Further, the cross-sectional area of the cylindrical section is smaller than that of the square head.

The cross section of the cylindrical section is smaller than that of the square head, so that the interference possibly generated when the square head is contacted with a workpiece is conveniently reduced.

Furthermore, the edge of the top surface of the base is provided with a plurality of U-shaped grooves.

The U-shaped groove is matched with the convex block on the positioning piece, so that a better connecting and positioning effect is achieved.

Furthermore, a plurality of screw holes are formed in the top surface of the base, and the extending direction of the screw holes is consistent with the extending direction of the lengthening rod.

The positioning piece is convenient to connect and fix with the positioning piece through the screw holes, the threaded connection is convenient to disassemble, and meanwhile, the self-locking function is achieved, and the relative rotation between the base and the positioning piece is avoided.

Furthermore, the edges of the base are of a chamfer structure respectively.

Furthermore, the top surface edge and the bottom surface edge of the round head are respectively in a circular arc structure.

The utility model has the advantages that the edge of the round head is inverted into a circular arc, and the workpiece is prevented from being damaged when being contacted with the edge of the workpiece.

The utility model has the following beneficial effects:

the base is used for being connected with the positioning plate and is convenient to fix on a machine tool spindle. The extension bar enables the center-dividing head to be close to the workpiece, and the axial moving length of the machine tool spindle is reduced. When the workpiece needs to be placed at an angle for machining, one corner of the workpiece can be contacted with the square head, and the other corner of the workpiece is contacted with the round head, so that the machining reference of the inclined workpiece is determined; when a workpiece with a boss at the top for blocking the processing base is encountered, the edge of the round head can be contacted with the surface of the workpiece below the boss, so that the boss is avoided, and the function of determining the reference is achieved.

Drawings

FIG. 1 is a schematic structural view of a centering bar for precision mold processing according to the present invention;

FIG. 2 is a schematic front view of a centering bar for precision mold tooling of the present invention;

FIG. 3 is a schematic top view of a centering bar for precision mold tooling of the present invention;

FIG. 4 is a first schematic view of the present invention of a centering bar for precision mold machining;

FIG. 5 is a second schematic view of the present invention for a centering bar for precision mold processing.

In the figure: 10-a base; 11-U-shaped groove; 12-a screw hole; 20-extension bar; 21-a conical section; 22-a cylindrical section; 30-centering head; 31-round head; 32-square head; 41-workpiece one; 42-workpiece two.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Examples

Referring to fig. 1, a centering bar for precision mold processing, comprising: a base 10, an extension bar 20 and a center-dividing head 30 which are connected in sequence.

Referring to fig. 1 and 3, one end surface of the base 10 is connected to the extension bar 20, a plurality of U-shaped grooves 11 are formed in an edge of the other end surface, and a U-shaped bottom surface of each U-shaped groove 11 faces a direction perpendicular to an extending direction of the extension bar 20. A plurality of screw holes 12 are further formed in the same end face of the U-shaped groove 11, the base 10 is connected and matched with the positioning piece through the U-shaped groove 11 and the screw holes 12, the self-locking function is achieved when the screw thread connection is convenient to detach, and relative rotation between the base 10 and the positioning piece can be avoided. And the edges of the base 10 are respectively chamfered, the side length of the end surface of the base 10 is respectively 52mm, and the thickness is 40 mm.

Referring to fig. 1 and 2, an extension bar 20 is used to connect a base 10 and a centering head 30, and the centering head 30 can access a workpiece without a large range of movement of a spindle when the base 10 is attached to the spindle of a machine tool by a spacer. The extension bar 20 includes: a conical section 21 connected with the base 10 and a cylindrical section 22 connected with the centering head 30, wherein the cross-sectional area of the conical section 21 is gradually reduced along the direction far away from the base 10 until the cross-sectional area is consistent with that of the cylindrical section 22. The taper angle of the tapered section 21 is 40 °, and the cross-sectional diameter of the cylindrical section 22 is 5 mm. The conical section 21 is arranged to play a role of extending the centering head 30, and meanwhile, the connection strength between the extension rod 20 and the base 10 is increased, so that the coaxiality of the centering head 30 is prevented from being changed after long-term use.

Referring to fig. 1 and 2, the centering head 30 includes: connect the round head 31 of the tip of keeping away from the toper section 21 at cylindrical section 22 and with the square head 32 that the terminal surface that cylindrical section 22 was kept away from to round head 31 is connected, square head 32 and cylindrical section 22 communication setting to the cross sectional area of round head 31 is greater than the cross sectional area of square head 32. And the cross-sectional area of the square head 32 is larger than the cross-sectional area of the cylindrical section 22, thereby avoiding unnecessary interference of the cylindrical section 22 when the square head 32 is in contact with the workpiece. The square head 32 has a square cross section and a side length of 6 mm. The round head 31 has a thickness of 5mm and a diameter of 20 mm. And the top surface edge and the bottom surface edge of the round head 31 are respectively subjected to arc chamfering treatment, the size of an edge fillet is 2.5mm, and the workpiece is prevented from being damaged when the round head is in contact with the edge of the workpiece.

Referring to fig. 4 and 5, when a first workpiece 41 requiring angular processing is encountered, one corner of the first workpiece 41 is in contact with the square head 32, and the other corner is in contact with the round head 31, so that the processing reference of the first workpiece 41 which is obliquely arranged can be determined. When the second workpiece 42 with the boss at the top for blocking the machining datum is met, the edge of the round head 31 can be in contact with the surface below the boss of the second workpiece 42, so that the boss is avoided, and the datum determination function is achieved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A rod in branch for precision mold processing, its characterized in that includes: a base (10), an extension bar (20) and a center dividing head (30) which are connected in sequence;

the centering head (30) comprises: the square head is connected with the round head (31) at the end part of the extension bar (20) and is far away from the extension bar (20) and connected with the end surface of the round head (31); the square head (32) and the extension bar (20) are concentrically arranged, and the section area of the round head (31) is larger than that of the square head (32).

2. The centering rod for precision mold processing according to claim 1, wherein the extension bar (20) comprises: a conical section (21) connected with the base (10) and a cylindrical section (22) connected between the conical section (21) and the round head (31), wherein the cross-sectional area of the conical section (21) is gradually reduced along the direction far away from the base (10).

3. The centering rod for precision mold machining according to claim 2, wherein the cross-sectional area of the cylindrical section (22) is smaller than the cross-sectional area of the square head (32).

4. The centering rod for precision mold machining according to claim 1, wherein the top surface edge of the base (10) is provided with a plurality of U-shaped grooves (11).

5. The centering rod for precision mold machining according to claim 4, wherein the top surface of the base (10) is formed with a plurality of screw holes (12), and the extension direction of the screw holes (12) coincides with the extension direction of the extension bar (20).

6. The centering rod for precision mold machining according to claim 5, wherein the edges of the base (10) are each chamfered.

7. The centering rod for precision mold machining according to any one of claims 1 to 6, wherein the rounded head (31) has a top surface edge and a bottom surface edge each having a circular arc structure.