CN113118569A - Milling method for one-step formed internal thread - Google Patents
Milling method for one-step formed internal thread Download PDFInfo
- Publication number
- CN113118569A CN113118569A CN201911404534.XA CN201911404534A CN113118569A CN 113118569 A CN113118569 A CN 113118569A CN 201911404534 A CN201911404534 A CN 201911404534A CN 113118569 A CN113118569 A CN 113118569A
- Authority
- CN
- China
- Prior art keywords
- internal thread
- axis
- thread
- main shaft
- rotary table
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/32—Thread cutting; Automatic machines specially designed therefor by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G2210/00—Details of threads produced
- B23G2210/04—Internal threads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a milling method for a one-time forming internal thread, which is used for machining the internal thread by a multi-axis numerical control machine tool, and comprises the following steps: installing a rotary table on the numerical control machine tool; installing an angle head on a main shaft of the numerical control machine tool, adjusting the axis of the angle head to form a preset swing angle with the axis of the main shaft according to the type of the internal thread, and locking the angle head; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path. The milling processing method for the once-formed internal thread provided by the embodiment of the invention can realize once-forming, can improve the processing precision and the surface finish of the internal thread, reduces the processing cost of the internal thread and has obvious economic benefit.
Description
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a milling machining method for an internal thread formed in one step.
Background
The traditional thread processing mode comprises the following steps: turning, tapping, etc. However, these machining methods have disadvantages of low thread machining accuracy and poor thread surface finish. In addition, the turning process also has the problems that chips are not easy to break, chips are easy to wind around the tool, or the chips are left in the threaded hole, the processing quality of the threaded hole is greatly reduced, meanwhile, the abrasion of the tool is also increased, and particularly, the turning process is not suitable for processing asymmetric parts and large parts. The tapping process also has the defects of easy breakage of a screw tap, low processing efficiency, large cutting force and the like, and is not suitable for processing difficult-to-process materials. At present, the machining of the conical thread with the thread tooth form angle bisector perpendicular to the cone generatrix is mainly turned.
Disclosure of Invention
The embodiment of the invention provides a milling method for an internal thread formed at one time, which aims to improve the processing quality of the internal thread and reduce the processing cost.
Specifically, the invention provides a milling method for an internal thread formed at one time, which is used for a numerical control machine tool to process the internal thread, and the milling method for the internal thread comprises the following steps: installing a rotary table on the numerical control machine tool; installing an angle head on a main shaft of the numerical control machine tool, adjusting the axis of the angle head and the axis of the main shaft to form a preset swing angle according to the type of the internal thread, and locking the angle head, wherein the preset swing angle theta is equal to a taper half angle of the internal thread when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a cone generatrix, and the preset swing angle theta is zero when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a thread axis or cylindrical internal thread; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
On the other hand, the invention also provides a milling method for the once-formed internal thread, which is used for machining the internal thread by a multi-axis machine tool, wherein the multi-axis machine tool comprises a main shaft and is provided with a rotary table, and the milling method for the internal thread is characterized by comprising the following steps: installing an angle head on the main shaft, adjusting the axis of the angle head to form a preset swing angle with the axis of the main shaft, and locking the angle head; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
Compared with the prior art, the invention has the advantages and positive effects that: a rotary table and an angle head are configured on a three-axis or four-axis numerical control machine tool, then a corresponding preset swing angle theta of the angle head is set according to the type of the internal thread to be machined and related parameters, and the rotary table is matched with the rotary table to complete machining of the internal thread according to a preset feed path. The internal thread milling method provided by the invention can improve the processing precision and the surface finish of the internal thread, reduce the processing cost of the internal thread and has obvious economic benefit.
Detailed Description
A milling method for a one-time forming internal thread is used for a numerical control machine tool to process the internal thread, and is characterized by comprising the following steps: installing a rotary table on the numerical control machine tool; installing an angle head on a main shaft of the numerical control machine tool, adjusting the axis of the angle head and the axis of the main shaft to form a preset swing angle according to the type of the internal thread, and locking the angle head, wherein the preset swing angle theta is equal to a taper half angle of the internal thread when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a cone generatrix, and the preset swing angle theta is zero when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a thread axis or cylindrical internal thread; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
A milling method for an internal thread formed in one step is used for a multi-shaft machine tool to machine the internal thread, the multi-shaft machine tool comprises a main shaft and is provided with a rotary table, and the milling method for the internal thread is characterized by comprising the following steps: installing an angle head on the main shaft, adjusting the axis of the angle head to form a preset swing angle with the axis of the main shaft, and locking the angle head; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
The above examples are only a few of the several preferred embodiments of the present invention, and it should be noted that the present invention is not limited to the above examples; for a person skilled in the art, modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (2)
1. A milling method for a one-time forming internal thread is used for a numerical control machine tool to process the internal thread, and is characterized by comprising the following steps: installing a rotary table on the numerical control machine tool; installing an angle head on a main shaft of the numerical control machine tool, adjusting the axis of the angle head and the axis of the main shaft to form a preset swing angle according to the type of the internal thread, and locking the angle head, wherein the preset swing angle theta is equal to a taper half angle of the internal thread when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a cone generatrix, and the preset swing angle theta is zero when the type of the internal thread is a conical internal thread with a tooth type angular bisector perpendicular to a thread axis or cylindrical internal thread; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
2. A milling method for an internal thread formed in one step is used for a multi-shaft machine tool to machine the internal thread, the multi-shaft machine tool comprises a main shaft and is provided with a rotary table, and the milling method for the internal thread is characterized by comprising the following steps: installing an angle head on the main shaft, adjusting the axis of the angle head to form a preset swing angle with the axis of the main shaft, and locking the angle head; clamping a workpiece to be machined and enabling the axis of a bottom hole on the workpiece to be machined to coincide with the axis of the rotary table; installing a thread milling cutter on the angle head; controlling the rotary table to rotate at a constant speed and starting the main shaft; and controlling the thread milling cutter to machine the internal thread on the bottom hole at a preset feed speed according to a preset feed path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404534.XA CN113118569A (en) | 2019-12-30 | 2019-12-30 | Milling method for one-step formed internal thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404534.XA CN113118569A (en) | 2019-12-30 | 2019-12-30 | Milling method for one-step formed internal thread |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113118569A true CN113118569A (en) | 2021-07-16 |
Family
ID=76768452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911404534.XA Withdrawn CN113118569A (en) | 2019-12-30 | 2019-12-30 | Milling method for one-step formed internal thread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113118569A (en) |
-
2019
- 2019-12-30 CN CN201911404534.XA patent/CN113118569A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210716 |