CN114378379B

CN114378379B - Novel drill bit for high-precision internal thread and using method thereof

Info

Publication number: CN114378379B
Application number: CN202210079474.4A
Authority: CN
Inventors: 胡祥
Original assignee: JIANGSU ZHENGKAI ELECTRONIC TECHNOLOGY CO LTD
Current assignee: JIANGSU ZHENGKAI ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-12-27
Anticipated expiration: 2042-01-24
Also published as: CN114378379A

Abstract

The invention discloses a novel drill bit for high-precision internal threads and a using method thereof, wherein the novel drill bit comprises a supporting rod inserted at a machine tool control end, and a cutter for forming the high-precision internal threads is arranged on one side of the supporting rod, which is far away from the machine tool control end; the cutter is including seting up the lateral wall cutting edge that machine tool control end one side was kept away from to the bracing piece, has seted up a plurality of side milling blade around lateral wall cutting edge a week equidistance interval, lateral wall cutting edge is kept away from bracing piece one side and is provided with end milling cutter, a plurality of end milling blade have been seted up on the end milling cutter surface. The combined end face milling cutter is innovatively combined with the side wall cutting edge, cutting power is formed by radial rotation of a novel milling cutter, meanwhile, a machine tool controls radial feeding and radial track movement, radial feeding utilizes the end face milling cutting edge to realize processing of a workpiece surface hole, the side wall single milling cutting edge is optimally increased to be more than 2 edges, and milling resistance of each single edge is reduced; the two types of combination can realize one-time processing of threads, and the efficiency is improved by more than one time.

Description

Novel drill bit for high-precision internal thread and using method thereof

Technical Field

The invention belongs to the technical field of internal thread machining, and particularly relates to a novel drill bit for high-precision internal threads and a using method thereof.

Background

The internal thread is not exposed, typically on the side of the rotating fastener being rotated. The bottom of the internal thread tooth-shaped groove can be in an arc shape, if the shape of the bottom of the internal thread tooth-shaped groove is not specified, the internal thread tooth-shaped groove can be flattened or rounded during turning, and a screw tap is adopted for extrusion cutting or a single-edge milling cutter is adopted for cutting during thread processing, so that the required thread is achieved.

The existing screw tap is used for extrusion cutting, the size and the precision of a cut thread are obtained by manufacturing the screw tap, and meanwhile, the influence of the material property of a processed workpiece is received, so that high precision is difficult to obtain.

Disclosure of Invention

The invention aims to provide a novel drill bit for high-precision internal threads and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a novel drill bit for high-precision internal threads comprises a supporting rod inserted in a machine tool control end, wherein a cutter for forming the high-precision internal threads is arranged on one side of the supporting rod, which is far away from the machine tool control end;

the cutter is including seting up the lateral wall cutting edge that machine tool control end one side was kept away from to the bracing piece, has seted up a plurality of side milling blade around lateral wall cutting edge a week equidistance interval, lateral wall cutting edge is kept away from bracing piece one side and is provided with end milling cutter, a plurality of end milling blade have been seted up on the end milling cutter surface.

Preferably, the bracing piece is close to the lathe control end and is provided with the installation component that increases stability when the cutter seted up the internal thread, the installation component is including cup jointing the thread plate on the bracing piece, the bracing piece surface set up with the thread plate on the screw thread looks adaptation screw thread, the thread plate is kept away from bracing piece one end and is provided with the casing, the cavity that supplies the bracing piece to peg graft is seted up at the middle part in the casing, set up flutedly in the casing, the recess is provided with the second backup pad, the second backup pad outside is connected with the stopper, the second backup pad outside is provided with the drive plate that is used for driving the stopper, the stopper is the T type form, still be provided with the first backup pad that parallels with the second backup pad in the recess, first backup pad is close to second backup pad one side and is provided with drive assembly, drive assembly is including setting up two riser in the first backup pad outside, two the riser is the symmetry setting, two install the slide bar between the riser, the cover is equipped with reset spring on the slide bar, reset spring one end is connected with the riser, and reset spring keeps away from riser one end and is connected with the slider, be provided with the connecting rod on the slider, the slider keep away from slider one end and be connected with the stopper, first backup pad, second backup pad and drive assembly sets up two and set up to be the cavity as the stopper, and be the mirror image for the stopper.

Preferably, the shell outside is provided with two fixed plates that are symmetrical, the fixed plate is the L type, two the fixed plate outside all pegs graft and is had spacing bolt, and spacing bolt extends to in the shell.

Preferably, the inserting ports matched with the limiting blocks are formed in the two ends of the inner wall of the cavity, the limiting rods are inserted in the outer side of the shell, and the end, far away from the shell, of each limiting rod is provided with a threaded knob.

A method for using a novel drill bit for high-precision internal threads comprises the following steps,

step A, inserting one end of a supporting rod, far away from a cutter, into a cavity, and installing the supporting rod on a machine control end when the supporting rod penetrates through the cavity and extends to the outside of a shell;

step B, after the supporting rod is positioned on one side of the machine control end and fixed, the thread plate is rotated to move towards one side close to the machine control end, so that the thread plate can drive the driving plate to move towards the right side and press and hold the limiting block;

step C, as the limiting block moves towards the direction of the supporting rod, the limiting block can drive the sliding block to slide on the sliding rod along the length direction of the sliding rod through the connecting rod, so that the sliding block can extrude the return spring;

d, when the right side wall of the driving plate moves to be in contact with a limiting block, the limiting block is clamped into the inserting port and abutted against the supporting rod, then a limiting bolt is screwed to penetrate through the fixing plate and extend into the shell, then the threaded knob is rotated to drive the limiting rod to rotate, and the limiting rod also extends into the shell and is abutted against the supporting rod;

and E, finally combining the end face milling cutter with the side wall cutting edge to enable the side wall cutting edge to rotate radially to form cutting power, controlling radial feeding and radial track motion by the machine tool, and realizing the processing of the surface hole of the workpiece by using the end face milling cutting edge through the radial feeding.

The invention has the technical effects and advantages that: the novel drill bit for the high-precision internal thread and the use method thereof are characterized in that a combined end face milling cutter is innovatively combined with a side wall cutting edge, cutting power is formed by radial rotation of the novel milling cutter, a machine tool controls radial feeding and radial track movement, the radial feeding utilizes the end face milling cutting edge to realize processing of a workpiece surface hole, the side wall single milling cutting edge is optimally increased to be more than 2 edges, and the milling resistance of each single edge is reduced; the two types of combination realize one-time processing completion of threads, the efficiency is improved by more than one time, the deviation of secondary clamping positioning can be completely avoided to be 0 by one-time clamping and processing forming of large holes and milling threads, the radial and axial movement tracks are adjusted by utilizing the program of a machine tool, the basic conditions of implementation adjustment and program realization of high-precision processing of abrasion and deviation of the cutter are realized, the side faces of multiple cutting edges are milled, the load of a single cutter is improved, the abrasion can be reduced, and the precision is improved at the same time.

Drawings

FIG. 1 is a schematic overall structure of the present invention;

FIG. 2 is a cross-sectional view of the housing of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at A according to the present invention;

FIG. 4 is a schematic view of the axial feed of the tool of the present invention;

fig. 5 is a schematic view of the radial trajectory of the tool of the present invention.

In the figure: 1. a support bar; 2. milling a cutting edge on the side surface; 3. end face milling cutting edges; 4. mounting the component; 401. a housing; 402. a fixing plate; 403. a limit bolt; 404. a threaded knob; 405. a limiting rod; 406. a cavity; 407. a first support plate; 408. a second support plate; 409. a drive plate; 410. a limiting block; 411. a groove; 412. an interface; 413. a thread plate; 5. a drive assembly; 501. a vertical block; 502. a slide bar; 503. a connecting rod; 504. a slider; 505. a return spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In order to realize that the disposable processing of internal screw thread is accomplished, promote machining efficiency, it is shown with reference to fig. 1, fig. 4 and fig. 5, including pegging graft in the bracing piece 1 of lathe control end, bracing piece 1 is kept away from lathe control end one side and is provided with and is used for seting up the high accuracy internal screw thread cutter, the cutter is including seting up the lateral wall cutting edge that lathe control end one side was kept away from to bracing piece 1, has seted up a plurality of side milling cutting edges 2 around lateral wall cutting edge a week equidistance interval, the lateral wall cutting edge is kept away from bracing piece 1 one side and is provided with the end mill, a plurality of end milling cutting edges 3 have been seted up on the end mill surface, creatively will combine together side milling cutting edge and end milling cutting edge, form cutting power at its novel milling cutter radial rotation, machine tool control radial feed and radial trajectory motion simultaneously, radial feed utilizes the end milling cutting edge to realize the processing in work piece surface hole, and is specific, can increase the side milling cutting edge more than 2 edges, reduces the milling resistance of every single-edge, through the disposable processing that combines the side milling edge and the edge to realize the screw thread is accomplished, improves efficiency more than one time.

In order to fix the support rod 1 and achieve the purpose of convenient installation, referring to fig. 1, 2 and 3, the support rod 1 is provided with an installation component 4 near the control end of the machine tool for increasing the stability of the cutter when the cutter is provided with internal threads, the installation component 4 comprises a thread plate 413 sleeved on the support rod 1, the surface of the support rod 1 is provided with threads matched with the threads on the thread plate 413, one end of the thread plate 413 far away from the support rod 1 is provided with a shell 401, the middle part in the shell 401 is provided with a cavity 406 for the support rod 1 to be inserted, the shell 401 is internally provided with a groove 411, the groove 411 is provided with a second support plate 408, the outer side of the second support plate 408 is connected with a limit block 410, the limit block 410 is in a T shape, the groove 411 is further provided with a first support plate 407 parallel to the second support plate 408, the side, close to the second support plate 408, of the first support plate 407 is provided with a driving assembly 5, the driving assembly 5 includes two vertical blocks 501 arranged outside the first support plate 407, the two vertical blocks 501 are symmetrically arranged, a sliding rod 502 is installed between the two vertical blocks 501, a return spring 505 is sleeved on the sliding rod 502, one end of the return spring 505 is connected with the vertical block 501, one end of the return spring 505, far from the vertical block 501, is connected with a sliding block 504, a connecting rod 503 is arranged on the sliding block 504, one end of the connecting rod 503, far from the sliding block 504, is connected with a limiting block 410, the first support plate 407, the second support plate 408 and the driving assembly 5 are arranged in two numbers, the cavity 406 is used as a center and is arranged in a mirror image manner, two symmetrical fixing plates 402 are arranged outside the housing 401, the fixing plates 402 are L-shaped, and limiting bolts 403 are inserted outside the two fixing plates 402, the limit bolt 403 extends into the housing 401, the two ends of the inner wall of the cavity 406 are both provided with insertion ports 412 matched with the limit block 410, the outer side of the housing 401 is inserted with the limit rod 405, one end of the limit rod 405, which is far away from the housing 401, is provided with a threaded knob 404, the threaded plate 413 is rotated to move the threaded plate 413 to the right side, the threaded plate 413 can drive the drive plate 409 to move to the right side and press the limit block 410, the limit block 410 can move to the direction of the support rod 1, the limit block 410 can drive the slide rod 502 of the slide block 504 to slide through the connecting rod 503, the slide block 504 can extrude the return spring 505, when the right side wall of the drive plate 409 moves to be in contact with the limit block 410, the limit block 410 can be clamped into the insertion ports 412, so that the support rod 1 is fixed to achieve the purpose of convenient installation, then the L-shaped fixing plate 402 and the threaded plate 413 are fixed through the limit bolt 403, the purpose of convenient fixation can be effectively improved, and the purpose of shock absorption can be achieved through the cooperation of the slide rod 502 and the return spring 505 in the working process of the support rod.

step A, firstly, inserting one end of a support rod 1, which is far away from a cutter, into a cavity 406, and installing the support rod 1 on a machine control end after penetrating through the cavity 406 and extending to the outside of a shell 401;

step B, after the support rod is fixed on one side of the machine control end, the thread plate 413 is rotated, the thread plate 413 is moved to one side close to the machine control end, and the thread plate 413 can drive the drive plate 409 to move to the right side and press and hold the limiting block 410;

step C, along with the movement of the limiting block 410 towards the direction of the supporting rod 1, the limiting block 410 can drive the sliding block 504 to slide on the sliding rod 502 along the length direction of the sliding rod 502 through the connecting rod 503, so that the sliding block 504 extrudes the return spring 505;

step D, when the right side wall of the driving plate 409 moves to be in contact with the limiting block 410, the limiting block 410 is clamped into the plug-in port 412 and abuts against the supporting rod 1, then the limiting bolt 403 is screwed to penetrate through the fixing plate 402 and extend into the shell 401, then the threaded knob 404 is rotated to drive the limiting rod 405 to rotate, and the limiting rod 405 also extends into the shell 401 and abuts against the supporting rod 1;

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high accuracy is novel drill bit for internal thread which characterized in that: the tool comprises a supporting rod (1) inserted at the control end of a machine tool, wherein a tool for forming high-precision internal threads is arranged on one side of the supporting rod (1) far away from the control end of the machine tool;

the cutter comprises a side wall cutting edge arranged on one side of a support rod (1) far away from a machine tool control end, a plurality of side milling cutting edges (2) are arranged around the side wall cutting edge at equal intervals, an end milling cutter is arranged on one side of the side wall cutting edge far away from the support rod (1), a plurality of end milling cutting edges (3) are arranged on the surface of the end milling cutter, a mounting component (4) for increasing the stability of the cutter when the cutter is used for arranging internal threads is arranged near the machine tool control end, the mounting component (4) comprises a thread plate (413) sleeved on the support rod (1), the surface of the support rod (1) is provided with a thread matched with the thread on the thread plate (413), one end of the thread plate (413) far away from the support rod (1) is provided with a shell (401), a cavity (406) for inserting the support rod (1) is arranged in the middle part of the shell (401), a groove (411) is arranged in the shell (401), a second support plate (408) is arranged in the groove (411), a limit block (409) is connected with a limit block (410), a limit block (409) arranged outside the second support plate (408), and a limit block (410) for driving the limit block (409) for driving the limit block (410) is arranged in the T-shaped support plate (408), and is arranged in parallel to the second support plate (411) and is arranged in the groove (411), first backup pad (407) are close to second backup pad (408) one side and are provided with drive assembly (5), drive assembly (5) are including setting up two riser (501) in first backup pad (407) outside, two riser (501) are the symmetry and set up, two install slide bar (502) between riser (501), the cover is equipped with reset spring (505) on slide bar (502), reset spring (505) one end is connected with riser (501), and reset spring (505) keep away from riser (501) one end and be connected with slider (504), be provided with connecting rod (503) on slider (504), slider (504) one end is kept away from in connecting rod (503) and stopper (410) are connected, stopper (410), first backup pad (407), second backup pad (408) and drive assembly (5) all set up to two, and are the mirror image setting with cavity (406) as the center.

2. The novel drill bit for high-precision internal threads as claimed in claim 1, characterized in that: the outer side of the shell (401) is provided with two symmetrical fixing plates (402), the fixing plates (402) are L-shaped, the outer sides of the fixing plates (402) are all inserted with limiting bolts (403), and the limiting bolts (403) extend into the shell (401).

3. The novel drill bit for high-precision internal threads as claimed in claim 2, characterized in that: the cavity (406) inner wall both ends all set up interface (412) with stopper (410) looks adaptation, the casing (401) outside is pegged graft and is had gag lever post (405), gag lever post (405) keep away from casing (401) one end and be provided with screw thread knob (404).

4. The use method of the novel drill bit for the high-precision internal thread based on the claim 3 is characterized in that: comprises the following steps of (a) carrying out,

step (A), firstly, inserting one end of the support rod (1) far away from the cutter into the cavity (406), and installing the support rod (1) on a machine control end after penetrating through the cavity (406) and extending to the outside of the shell (401);

step (B), after the support rod (1) is positioned at one side of the machine control end and fixed, the threaded plate (413) is rotated, the threaded plate (413) is moved to one side close to the machine control end, and the threaded plate (413) can drive the drive plate (409) to move to the right side and press and hold the limiting block (410);

step (C), the limiting block (410) can drive the sliding block (504) to slide on the sliding rod (502) along the length direction of the sliding rod (502) through the connecting rod (503) along with the movement of the limiting block (410) towards the direction of the supporting rod (1), so that the sliding block (504) can extrude the return spring (505);

step (D), when the right side wall of the driving plate (409) moves to be in contact with the limiting block (410), the limiting block (410) is clamped into the inserting port (412) and is abutted against the supporting rod (1), then the limiting bolt (403) is screwed to penetrate through the fixing plate (402) and extend into the shell (401), then the threaded knob (404) is rotated to drive the limiting rod (405) to rotate, and the limiting rod (405) also extends into the shell (401) and is abutted against the supporting rod (1);

and (E) finally combining the end face milling cutter with the side wall cutting edge to enable the side wall cutting edge to rotate radially to form cutting power, controlling radial feeding and radial track motion by the machine tool, and realizing the processing of the surface hole of the workpiece by using the end face milling cutting edge through the radial feeding.