CN109201980B - Partitioned use method of thread rolling wheel - Google Patents
Partitioned use method of thread rolling wheel Download PDFInfo
- Publication number
- CN109201980B CN109201980B CN201811085237.9A CN201811085237A CN109201980B CN 109201980 B CN109201980 B CN 109201980B CN 201811085237 A CN201811085237 A CN 201811085237A CN 109201980 B CN109201980 B CN 109201980B
- Authority
- CN
- China
- Prior art keywords
- rolling
- thread
- area
- processing
- thread rolling
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H3/00—Making helical bodies or bodies having parts of helical shape
- B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
- B21H3/04—Making by means of profiled-rolls or die rolls
- B21H3/042—Thread-rolling heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention relates to a partitioned use method of a thread rolling wheel. The method comprises the following steps: the method comprises the steps of dividing a thread rolling wheel into a plurality of rolling areas from a first rolling area to an S-th rolling area according to an actual bearing area; and the circular rolling processing method is characterized in that the thread rolling wheel is controlled to adopt a first rolling processing area, the surface to be processed of the fastener is rolled, when the adopted first rolling processing area is damaged, a second rolling processing area on the thread rolling wheel is adopted to continue rolling processing, and the process is circulated until the last S-th rolling processing area on the thread rolling wheel is damaged, and the thread rolling wheel is scrapped and is not used any more.
Description
Technical Field
The invention relates to the technical field of external thread machining, in particular to a partitioned use method of a thread rolling wheel.
Background
In order to improve the thread strength and the fatigue load resistance of the external thread, the continuity of a metal streamline is required to be maintained in the processing, the thread root of the thread is in arc transition, and the stress concentration is reduced. In production and processing, the large-diameter run-out of the thread rolling wheel is directly related to the large-diameter fluctuation range and the consistency of the product threads, strict requirements on the large-diameter consistency of the product threads are met in the field of aviation, and the large-diameter fluctuation range is low in requirement. In addition, when the external thread is formed by rolling, the thread rolling wheel can be damaged due to factors such as fatigue along with the increase of the number of processed products, and the service life of the single-width thread rolling wheel can be prolonged relatively by the method.
The load curve of the thread roller during the thread rolling process is shown in figure 1. Wherein, the area 1 is a single rolling circulation process, the area 2 is a rolling forming process, the area 3 is a sizing rolling process, and the area 4 is a thread rolling wheel withdrawing and feeding process. The whole rolling process is recycled according to 360 degrees of the thread rolling wheel.
Under the condition of the existing use technology, the large diameter run-out of the thread rolling wheel is directly transmitted to the large diameter of the thread of a product, so that the large diameter run-out of the thread of the product batch is out of tolerance and the consistency is poor. Moreover, when the thread form on the surface of the thread rolling wheel is damaged a little, in order to prevent the damage point from influencing the thread form of the part, the thread rolling wheel is scrapped and can not be used any more, and the use cost of the thread rolling wheel is higher.
In addition, in order to ensure the consistency of the external diameters of the threads during the thread rolling processing of the whole batch of fasteners, the circumferential runout of the external diameter of the thread rolling wheel is extremely high, the thread rolling wheel needs to be processed in a special mode, and the cost of the thread rolling wheel is extremely high.
Therefore, the inventor creatively provides a partitioned use method of the thread rolling wheel.
Disclosure of Invention
The embodiment of the invention provides a partition use method of a thread rolling wheel, which reduces the influence of large-diameter jumping of the thread rolling wheel on the large diameter of the thread of a product, improves the quality of the product, can fully and reasonably effectively use the thread rolling wheel and prolongs the service life of a single-width thread rolling wheel by partitioning the thread rolling wheel.
The embodiment of the invention provides a partitioned use method of a thread rolling wheel, which comprises the following steps:
dividing the thread rolling wheel into a plurality of rolling areas from a first rolling area to an S rolling area in sequence according to an actual bearing area;
and circularly rolling, namely controlling the thread rolling wheel to adopt a first rolling processing area, rolling the surface to be processed of the fastener, and when the adopted first rolling processing area is damaged, adopting a second rolling processing area on the thread rolling wheel to continue rolling processing, and circularly performing the rolling processing until the last S-th rolling processing area on the thread rolling wheel is damaged, so that the thread rolling wheel is scrapped and is not used any more.
Further, each rolling processing area comprises a rolling forming area, a correction type rolling area, a thread rolling wheel withdrawing area and a thread rolling wheel feeding area.
Further, the method for partitioning the thread rolling wheel further comprises the step of calculating and obtaining the angle of each rolling area on the circumference of the thread rolling wheel and the number of the rolling areas on the basis of the diameter parameter of the external thread, the external diameter of the thread rolling wheel and the rolling operation parameter.
Further, from the first rolling area to the S-th rolling area, the single-area angle of each rolling area is the same.
Further, the angle calculation formula of the rolling area is that a is 360 ° × [ (D2-D3)/V +1] × D3/D, where a is a single-zone angle, D2 is a thread pitch diameter, D3 is a thread minor diameter, D is a thread rolling wheel outer diameter, and V is a feeding speed of a main shaft of the thread rolling machine driving the thread rolling wheel.
Further, the number of the rolling areas is calculated as S ═ D/{ [ (D2-D3)/V +1] × D3}, where S is the number of divisions of the rolling areas.
Further, the method for circular rolling processing further comprises the step of controlling the initial position angle of the thread rolling wheel during rolling processing by using a numerical control machine, namely setting the initial position angle of rolling processing of the first rolling processing area on the numerical control machine as a, controlling the initial position angle of rolling processing of the second rolling processing area as a + A by using the numerical control machine after the first rolling processing area is damaged, and so on, wherein the initial position angle of rolling processing of the S-th rolling processing area is a + (S-1) A.
Further, the angle range of a is 1 to 10 °.
Further, after each rolling area completes single rolling, a feeding and discharging gap is formed in the fastener, and the numerical control machine tool enables the rolling areas to return to corresponding initial position angles by controlling the main shaft for driving the thread rolling wheel to rotate forwards or reversely continuously.
Further, in the single rolling process of each rolling process area, the actual bearing area is the rolling forming area and the calibration rolling area.
In conclusion, the thread rolling wheel is divided into a plurality of rolling processing areas for respective recycling use by the concept of partitioning the thread rolling wheel according to the processing parameters of the external threads based on reasonable and rigorous calculation, the circumferential size jump of the thread rolling wheel is reduced to single-area jump, the influence of the large-diameter jump of the thread rolling wheel on the large-diameter fluctuation of a product is reduced, and the processing quality of threads is improved. In addition, in the single rolling process of each rolling process area, the actual bearing area can be fully and effectively utilized, the number of the threads which can be processed by the whole thread rolling wheel is increased, the service life of the thread rolling wheel is further prolonged, and therefore the production and processing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the load curve of a thread rolling die during the thread rolling process of external threads.
FIG. 2 is a flow chart of a sectional application method of a thread rolling wheel according to an embodiment of the present invention.
In the figure:
1-single rolling cycle process; 2-rolling and forming process; 3-shape correction rolling process; 4-thread roller exit and feed process.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a schematic view of a load-time curve of a thread rolling wheel in the process of external thread rolling, as shown in fig. 1, a region 1 is a single rolling cycle process, a region 2 is a roll forming process, a region 3 is a sizing rolling process, and a region 4 is a thread rolling wheel withdrawing and feeding process. The whole rolling process is recycled according to 360 degrees of the thread rolling wheel. The embodiment of the invention sets up and fully uses all areas of the circumference of the thread rolling wheel, divides the thread rolling wheel into a plurality of areas for thread rolling processing, each thread rolling processing area can be fully recycled, and the service life of the thread rolling wheel is effectively prolonged.
FIG. 2 is a flow chart of a sectional application method of a thread rolling wheel according to an embodiment of the present invention. The partition using method is used for the external thread rolling processing of the fastener, and the specific using method comprises the following steps of S110-S120:
step S110 is to divide the thread rolling wheel into a plurality of rolling areas, which are sequentially from the first rolling area to the S-th rolling area, according to the actual bearing area.
And step S120, performing circular rolling processing, namely controlling the thread rolling wheel to adopt a first rolling processing area, performing rolling processing on the surface to be processed of the fastener, and when the adopted first rolling processing area is damaged, adopting a second rolling processing area on the thread rolling wheel to continue rolling processing, and circulating the steps until the last S-th rolling processing area on the thread rolling wheel is damaged, wherein all rolling processing for thread rolling processing on the thread rolling wheel is completely and fully used, and the thread rolling wheel is scrapped and is not used any more.
Specifically, each roll forming area comprises a roll forming area, a sizing roll area, a thread rolling wheel withdrawing area and a thread rolling wheel feeding area. Each region on the roll-formed region corresponds to a respective process.
The method for partitioning the thread rolling wheel in step S110 further includes calculating an angle of each rolling area on the circumference of the thread rolling wheel and the number of rolling areas within the circumferential range of one thread rolling wheel based on data such as a diameter parameter of the external thread, an outer diameter of the thread rolling wheel, and rolling operation parameters. And the single-area angles of each rolling area are the same from the first rolling area to the S-th rolling area on the thread rolling wheel.
Specifically, the angle calculation formula of the rolling area is that a is 360 ° × [ (D2-D3)/V +1] × 3/D, where a is a single-zone angle, D2 is a thread pitch diameter, D3 is a thread minor diameter, D is a thread rolling wheel outer diameter, and V is a thread rolling machine spindle feed speed for driving the thread rolling wheel.
The number of the rolling areas is calculated as S ═ D/{ [ (D2-D3)/V +1] × D3}, where S is the number of divisions of the rolling area.
Further, the circular rolling processing method in step S120 further includes controlling an initial position angle of the thread rolling wheel to perform rolling processing by using a numerical control machine, that is, setting an initial position angle of rolling processing of a first rolling processing area on the numerical control machine as a, controlling an initial position angle of rolling processing of a second rolling processing area by using the numerical control machine as a + a after the first rolling processing area is damaged, and so on, where the initial position angle of rolling processing of the S-th rolling processing area is a + (S-1) a.
As an alternative, the angle of a ranges from 1 ° to 10 °.
As another alternative embodiment, after each rolling area completes a single rolling process, the numerical control machine tool controls the main shaft for driving the thread rolling wheel to rotate forward or backward continuously in the loading and unloading gap of the fastener, so that the rolling area used in the process returns to the corresponding initial position angle.
It should be noted that, in the single rolling process of each rolling process area, the actual bearing area is a roll forming area and a calibration roll area. The roll forming area and the shape correcting roll area are respectively applied to the corresponding roll forming process and the shape correcting roll process.
Taking the rolling process of the MJ 6X 1-4h6h external thread as an example for specific explanation, the parameters of the MJ 6X 1-4h6h external thread are as follows:
thread pitch diameter d 2: 5.30 mm;
thread minor diameter d 3: 4.70 mm;
external diameter D of the thread rolling wheel: 178 mm;
feed speed V of the main shaft of the thread rolling machine: 0.12 mm/rev;
according to the zoning method of the invention, the corresponding parameters can be substituted into the formula A of 360 DEG X [ (D2-D3)/V +1] × D3/D, the calculation result A is 57 DEG, the parameters are substituted into the formula S of D/{ [ (D2-D3)/V +1] × D3}, and the calculation result S is 6, namely the thread rolling wheel can be divided into 6 rolling processing areas for use. Then, the 6 rolling processing areas on the thread rolling wheel are sequentially and respectively recycled according to the use method provided by the invention until each rolling processing area is damaged and scrapped, and the major diameter of the thread can be strictly ensured to be within the range of standard requirements.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above description is only an example of the present application and is not limited to the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (5)
1. A method for using a thread rolling die in a partitioned manner for the external thread rolling of fasteners is characterized by comprising the following steps:
dividing the thread rolling wheel into a plurality of rolling areas from a first rolling area to an S rolling area in sequence according to an actual bearing area;
the quantity calculation formula of the rolling processing areas is S ═ D/{ [ (D2-D3)/V +1] × D3}, wherein S is the number of the partitions of the rolling processing areas, D2 is the pitch diameter of the threads, D3 is the minor diameter of the threads, D is the outer diameter of the thread rolling wheel, and V is the feeding speed of the main shaft of the thread rolling machine for driving the thread rolling wheel;
performing circular rolling processing, namely controlling the thread rolling wheel to adopt a first rolling processing area, performing rolling processing on the surface to be processed of the fastener, and when the adopted first rolling processing area is damaged, adopting a second rolling processing area on the thread rolling wheel to continue performing rolling processing, and circulating the steps until the last S-shaped rolling processing area on the thread rolling wheel is damaged, and the thread rolling wheel is scrapped and is not used any more;
the method for circularly rolling and processing the thread roller comprises the steps of controlling the initial position angle of the thread roller to perform rolling and processing by a numerical control machine, namely setting the initial position angle of the first rolling and processing area on the numerical control machine as a, controlling the initial position angle of the second rolling and processing area as a + A by the numerical control machine after the first rolling and processing area is damaged, wherein the single-area angle of each rolling and processing area is the same from the first rolling and processing area to the S rolling and processing area, and repeating the steps, wherein the initial position angle of the S rolling and processing area is a + (S-1) A, and A is 360 degrees x [ (D2-D3)/V +1] x D3/D.
2. The method of claim 1 wherein each of said roll forming zones comprises a roll forming zone, a sizing and rolling zone, and a roll wheel exit zone and a feed zone.
3. The sectional application method of a thread rolling die according to claim 1, wherein the angle of a is in the range of 1 ° to 10 °.
4. The method for using the thread rolling wheel in the subareas according to claim 1, wherein after each thread rolling area completes a single thread rolling process, the numerical control machine tool controls the main shaft for driving the thread rolling wheel to rotate forward or backward continuously to return the thread rolling area to the corresponding initial position angle after the fastener is subjected to a feeding and discharging gap.
5. The method of claim 2 wherein during a single pass of said rolling process in each of said roll forming zones, the actual load carrying zones are said roll forming zone and said sizing rolling zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085237.9A CN109201980B (en) | 2018-09-18 | 2018-09-18 | Partitioned use method of thread rolling wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811085237.9A CN109201980B (en) | 2018-09-18 | 2018-09-18 | Partitioned use method of thread rolling wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109201980A CN109201980A (en) | 2019-01-15 |
| CN109201980B true CN109201980B (en) | 2020-04-17 |
Family
ID=64984558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811085237.9A Active CN109201980B (en) | 2018-09-18 | 2018-09-18 | Partitioned use method of thread rolling wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109201980B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001349313A (en) * | 2000-06-08 | 2001-12-21 | Tomikawa Seisakusho:Kk | Male screw and rolling method for it |
| CN201361668Y (en) * | 2008-11-17 | 2009-12-16 | 浙江正达模具有限公司 | Ring-type axial-fed thread rolling die for double-circular-arc progressive thread form |
| CN201558922U (en) * | 2009-10-27 | 2010-08-25 | 杜鸣 | Thread rolling wheel for machining high-intensity and high-precision screw rod |
| CN103611856A (en) * | 2013-11-13 | 2014-03-05 | 四川柯世达汽车制动系统集团有限公司 | Rolling tool for axial external threads |
| CN106424492A (en) * | 2016-10-31 | 2017-02-22 | 洛阳中岩工程材料有限公司 | Method for rolling threads of different screwing directions through same cylindrical die roll |
-
2018
- 2018-09-18 CN CN201811085237.9A patent/CN109201980B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109201980A (en) | 2019-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107335868B (en) | Method for machining teeth on a workpiece | |
| US8113915B2 (en) | Grinding worm, profiling gear and process for the profiling of the grinding worm | |
| CN104582879B (en) | Method for turning and truning fixture | |
| CN103042469A (en) | Method for dressing a multi-thread grinding worm and a method for grinding and a grinding worm | |
| CN110586730A (en) | Finished product of cylindrical part with inner wall longitudinal ribs and forming method thereof | |
| CN104707924B (en) | Master roller and core roller active-active twist-roll forming method for bearing outer ring for aviation main shaft cylindrical roller | |
| CN111420992A (en) | Sizing rolling forming method for axial inner rib cylindrical part | |
| CN109201980B (en) | Partitioned use method of thread rolling wheel | |
| CN106862273A (en) | A kind of milling method of cold rolled tube | |
| JPS59163029A (en) | Flange forming head of thin walled metallic cylinder | |
| CN102933873B (en) | Nut for a planetary roller screw drive and method for producing such a nut | |
| CN1267662C (en) | Rolling die of ballscrew | |
| CN106424985A (en) | Machining tool and process of large-lead multi-roller-way ball nut circular spiral groove | |
| CN104668412A (en) | Thread rolling machine | |
| US20170341205A1 (en) | Method for the dressing of a multi-thread grinding worm by means of a dressing roll | |
| CN114515872A (en) | Grinding wheel cutter fleeing method for anti-distortion gear grinding machining | |
| JP6318808B2 (en) | Ball screw | |
| CN109794534B (en) | Multi-pass spinning forming method for cylinder with inner ring reinforcing ribs | |
| CN106514161B (en) | The processing method and engine crankshaft of engine crankshaft | |
| JP5311901B2 (en) | Screw rolling dies | |
| CN202639181U (en) | Cold forging die | |
| JP2011115799A (en) | Method of form-rolling rolled body or screw body, working device and formed body | |
| CN202571115U (en) | Tool for processing fastener thread | |
| CN205605651U (en) | System race ring is rolled up to dysmorphism with lead oil groove | |
| CN107848046A (en) | For mach method and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |