CN113102958B - Remanufacturing and using method of waste planar spline broach - Google Patents
Remanufacturing and using method of waste planar spline broach Download PDFInfo
- Publication number
- CN113102958B CN113102958B CN202110372371.2A CN202110372371A CN113102958B CN 113102958 B CN113102958 B CN 113102958B CN 202110372371 A CN202110372371 A CN 202110372371A CN 113102958 B CN113102958 B CN 113102958B
- Authority
- CN
- China
- Prior art keywords
- broach
- waste
- grinding
- remanufacturing
- spline
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
- B23P15/42—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools broaching tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D43/00—Broaching tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention provides a remanufacturing and using method of a waste planar spline broach, and aims to solve the technical problems that when the existing planar spline broach is used for polishing, only a front edge surface is reground, so that the polishing times are limited, and only scrapping treatment can be performed when the requirements of workpieces cannot be met, so that the manufacturing cost of the workpieces is high. The remanufacturing method comprises the following steps: calculating the top edge grinding amount Ld according to the top edge grinding loss depth S, and grinding the top edge of the broach; calculating the side edge grinding amount Lc ═ Ld × sin α, and grinding the side edge of the broaching tool; grinding the front edge surface of the broach; marking the thinning amount Ld on the cutter body to finish the remanufacturing of the broach; when the broach is used, a copper sheet with the thickness H ═ Ld is added between the broach box and the broach main body; or after grinding, directly fixing a copper sheet with the thickness of H ═ Ld at the bottom of the broach body, and then putting the broach into a broach box. The method can greatly reduce the purchase cost of the cutter and the cost of a single cutter of a workpiece.
Description
Technical Field
The invention relates to a grinding method of a broaching tool, in particular to a remanufacturing method of a waste planar spline broach, a remanufactured broach and a using method.
Background
Broaching machining is an efficient machining process integrating gear hobbing, gear shaving and milling and sharpening, has high machining precision, is widely applied to various industrial fields including the automobile industry, and is also used for high-precision machining of difficult-to-cut materials such as turbine discs used in the generator industry and the aviation industry, so that the broaching machining process becomes an unavailable machining process in the modern industry. The broach is a large-scale forming tool, the material consumption of which is large, the price is high, the broaching service life is short, and the cost of a single tool is high, but after the broach is used at present, only the front edge surface is reground to improve the sharpness of the cutting edge of the broach, and after the front edge surface is ground for many times on a broach sharpening machine, when a workpiece machined by broaching cannot meet the requirement, the broach can only be scrapped, and the manufacturing cost of the workpiece is greatly increased.
The Chinese patent with the publication number of CN103203666A discloses a high-efficiency sharpening method for a sharp edge of a side-edge-free rough broach, which achieves the effects of small sharpening amount and uniform sharpening without changing the original overall enveloping line type of the broach. Chinese patent publication No. CN109822404A discloses a method for determining the grinding amount of special grinding of a rough broach for turbine race broaching, which is to determine the grinding amount of the resultant amount, reasonably grind the broach, and reuse new processing parameters. The two methods prolong the service life of the broach through grinding, but mainly aim at grinding the rough broach, and have complex grinding amount calculation and high processing cost.
Disclosure of Invention
The invention aims to solve the technical problems that when the existing planar spline broach is ground, only the front edge surface is reground, so that the grinding times are limited, and when the requirements of workpieces cannot be met, only the workpiece can be scrapped, so that the manufacturing cost of the workpieces is high.
In order to achieve the purpose, the invention adopts the technical scheme that:
the remanufacturing method of the waste flat spline broach is characterized by being manufactured in an equal contour mode and comprising the following steps of:
a) when the broach reaches the rated service life or the broaching is abnormal, the broach needs to be repaired;
b) the broach has no fracture and no continuous gear punching or has less than 4 continuous gear punching;
c) the thickness of the tooth back of the broach is more than or equal to 2 mm;
d) the side of the broach key is manufactured in a lifting grinding mode;
Ld＝S+0.2mm；
if the top edge grinding amount Ld is less than or equal to 0.6mm, grinding the broach top edge 2 according to the top edge grinding amount Ld; otherwise, the waste planar spline broach is discarded;
and 3, obtaining a side edge grinding amount Lc by utilizing the top edge grinding amount Ld according to the following formula:
Lc＝Ld*sinα
wherein α is a pressure angle;
grinding the side edge 4 of the broach according to the side edge grinding amount Lc;
and 5, marking the thinning amount Ld and a remanufacturing mark on the thinned broach body 1 to complete remanufacturing of the broach.
Further, the step 1 also comprises the steps of cleaning the waste flat spline broach and removing greasy stains.
The invention also provides a remanufactured broach based on the waste planar spline broach, which is characterized in that: the remanufacturing method of the waste planar spline broach is adopted for remanufacturing.
In addition, the invention also provides a using method of the waste planar spline broach, which is characterized by comprising the following steps:
and 3, mounting the cutter box 5 on a machine tool for broaching.
Further, in step 2, adding a metal sheet with a thickness H between the tool box 5 and the broach body 1 is specifically: directly cushioning a metal sheet with the thickness of H between the knife box 5 and the broach body 1; or, fixing a metal sheet with the thickness of H on the bottom surface of the broach body 1 in a bonding or welding mode, and then putting the broach into the tool box 5.
Further, in step 2, the metal sheet is a copper sheet 6.
The invention has the beneficial effects that:
1) the remanufacturing method of the waste planar spline broach aims at the remanufacturing of the discarded planar spline broach with equal contour, the top edge, the side edge and the front edge surface of the planar spline broach are reground, the calculation of the regrinding amount is simple, the process method is effective, and the remanufacturing efficiency is high.
2) The service life of the remanufactured planar spline broach adopting the method can reach 70 percent of that of a new cutter, the remanufacturing cost is 15 percent of the value of the original new cutter, the purchasing cost of the cutter can be greatly reduced, and the cost of a single cutter of a workpiece can be reduced.
Drawings
FIG. 1 is a schematic view showing the relationship between the thinning amount of the top edge and the side edge of the broach according to the method of the present invention;
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a view showing an assembly relationship between a sharpened body and a box of the broach according to an embodiment of the present invention;
fig. 4 is a right side view of fig. 3.
Description of reference numerals:
1-cutter body, 2-top blade, 3-front blade surface, 4-side blade, 5-cutter box, 6-copper sheet, 7-tooth shape before grinding and 8-tooth shape after grinding.
Detailed Description
In order to more clearly explain the technical solution of the present invention, the following detailed description of the present invention is made with reference to the accompanying drawings and specific examples.
The plane spline broach is mainly a triangle spline broach, and the main state of old and useless plane spline broach is:
a. the full height of the cutter tooth can not meet the use requirement due to repeated grinding;
b. the tool is seriously broken, and the tip cutting edge of the broach is seriously worn and loses the grinding value;
c. improper use of the tool results in breakage.
In order to save cost, the collection, remanufacture and use method and the working process of the waste planar spline broach are as follows:
1. collecting waste planar spline broaches, classifying according to remanufacturing requirements, and cleaning;
2. the waste flat spline broach is remanufactured according to the method for remanufacturing the waste flat spline broach;
3. marking the remanufactured planar spline broach;
4. installing the remanufactured planar spline broach in a broach box according to the use scheme;
5. and (4) mounting the knife box on a corresponding broaching machine for processing.
The remanufacturing method of the waste planar spline broach is adopted to remanufacture the scrapped planar spline broach, and the main process steps are as follows:
(1) collection and classification of waste planar spline broaches
The waste planar spline broaches are collected and classified according to the scrap reasons, and the invention provides four feasible conditions for remanufacturing:
a. the broach which needs to be repaired after reaching the rated service life or abnormal broaching;
b. no continuous gear punching, no fracture or less than 4 broaches for continuous gear punching;
c. the thickness of the tooth back of the broach is more than or equal to 2 mm;
d. the key side of the broach adopts a lifting grinding mode during manufacturing.
And selecting the remanufacturable waste planar spline broach according to the 4 conditions, and cleaning the selected broach to remove stains such as grease and the like.
(2) Remanufacturing method of waste planar spline broach
As shown in fig. 1 and 2, the remanufacturing method of the waste flat spline broach is equal-profile manufacturing, the tooth form 7 before grinding is the same as the tooth form 8 after grinding in width, and the specific method is as follows:
a. and (3) repairing and grinding the broach top edge 2 again: under general conditions, the tooth tops of the planar spline broaches are torn and worn, and through measurement, the wear depth S of the top edges 2 of the broaches is generally 0.1-0.3 mm, so that the broaches need to be completely worn according to the wear degree of each broaches. The higher the strength of the edge of the broach is, the more times the broach can be polished. However, the larger the sharpening amount of the broach top blade 2 is, the larger the broach tooth back thickness is, and the sharpening amount of the broach top blade 2 is large, which increases the sharpening amount of the side blade 4, and increases the sharpening cost. Therefore, considering comprehensively, the tip sharpening amount Ld is generally:
Ld＝S+0.2
meanwhile, the depth of a carburized layer on the surface of the broach is generally about 1mm, so that the maximum top edge grinding quantity Lmax of the waste broach is 0.6 mm.
b. Reconditioning the broach side edge 4: the broaching tool is required to do not change the width of the tooth groove of the spline after broaching the workpiece, so the grinding amount required by the side edge 4 can be calculated according to a related conversion formula; for a commonly used triangular spline broach, the side edge thinning Lc is:
Lc＝Ld*sinα
wherein: alpha is the pressure angle of the triangular spline.
c. Reconditioning the broach front facet 3: the broach chip pocket continues to use the original broach chip pocket, and only the front edge surface 3 needs to be polished normally.
d. Characters such as top edge grinding amount Ld and remanufacturing are printed on the ground planar spline broach body 1 to distinguish the flat spline broach from a new broach.
(3) Use method of waste planar spline broach
When the planar spline broach is normally used, the planar spline broach is directly mounted on the corresponding tool box 5, and the tool box 5 is mounted on a machine tool to be broached for use. However, when the remanufactured planar spline broach is used, as shown in fig. 3 and 4, a metal sheet with a certain thickness is added in the cutter box 5 and the broach body 1, for example, a copper sheet 6 with the thickness of H is placed between the remanufactured broach body 1 and the cutter box 5, the thickness of the copper sheet 6 is the same as the top edge grinding amount of the remanufactured broach, that is, H ═ Ld, and then the cutter box 5 is mounted on a machine tool, so that the remanufactured planar spline broach can be normally used.
Or the H-thick copper sheet 6 can be fixed at the bottom of the broach body 1 by adopting bonding and other modes, then the broach is installed in the corresponding knife box 5, and the knife box 5 is installed on a machine tool to be normally used.
The waste planar spline broach is remanufactured by the method, so that waste materials are changed into valuable materials, the tool becomes a brand new tool, the service life of the remanufactured broach can reach 70% of that of the original broach which is newly manufactured, the remanufacturing cost is 15% of that of the original new tool, and therefore the purchasing cost of the tool of an enterprise can be greatly reduced, and the cost of a single tool of a workpiece is reduced. Meanwhile, the cutter material can be fully utilized, and metal resources are saved.
The above description is only for the purpose of describing the preferred embodiments of the present invention and is not intended to limit the technical solutions of the present invention, and any known modifications made by those skilled in the art based on the main technical concepts of the present invention are within the technical scope of the present invention.
Claims (4)
1. The remanufacturing method of the waste flat spline broach is characterized by being manufactured in an equal contour mode and comprising the following steps of:
step 1, remanufacturing a waste planar spline broach to obtain a remanufactured broach;
1.1, collecting the waste planar spline broach according to the remanufacturable condition of the waste planar spline broach; the remanufacturable conditions are such that the following requirements are simultaneously satisfied:
a) when the broach reaches the rated service life or the broaching is abnormal, the broach needs to be repaired;
b) the broach has no fracture and no continuous gear punching or has less than 4 continuous gear punching;
c) the thickness of the tooth back of the broach is more than or equal to 2 mm;
d) the side of the broach key is manufactured in a lifting grinding mode;
1.2, measuring the wear depth S of the top blade (2) of the waste planar spline broach, and obtaining the top blade grinding amount Ld according to the following formula:
Ld= S + 0.2mm；
if the top edge grinding amount Ld is less than or equal to 0.6mm, grinding the broach top edge (2) according to the top edge grinding amount Ld; otherwise, the waste planar spline broach is discarded;
1.3, utilizing the top edge grinding amount Ld to obtain a side edge grinding amount Lc according to the following formula:
Lc= Ld*sinα
wherein α is a pressure angle;
grinding the side edge (4) of the broach according to the side edge grinding amount Lc;
1.4, grinding the front edge surface (3) of the broach to ensure that the sharpness of the cutting edge of the front edge surface (3) meets the design index requirement of the original broach and the shape and the size of a broach chip pocket are kept unchanged;
1.5, marking the thinning amount Ld and a remanufacturing mark on the thinned broach body (1) to complete remanufacturing of the broach;
step 2, when the broach is remanufactured for use, a metal sheet with the thickness of H is added between the tool box (5) and the broach body (1), and H = Ld;
and step 3, mounting the cutter box (5) on a machine tool for broaching.
2. The remanufacturing method of the waste flat spline broach according to claim 1, wherein in the step 2, the metal sheet with the thickness H added between the broach case (5) and the broach body (1) is specifically: directly cushioning a metal sheet with the thickness of H between a knife box (5) and a broach body (1); or fixing a metal sheet with the thickness of H on the bottom surface of the broach body (1) in a bonding or welding mode, and then installing the broach into the broach box (5).
3. The remanufacturing method of the waste flat spline broach according to claim 1 or 2, characterized in that: in the step 2, the metal sheet is a copper sheet (6).
4. The remanufacturing method of the waste flat spline broach according to claim 3, characterized in that: the step 1.1 also comprises the steps of cleaning the waste flat spline broach and removing greasy stains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372371.2A CN113102958B (en) | 2021-04-07 | 2021-04-07 | Remanufacturing and using method of waste planar spline broach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110372371.2A CN113102958B (en) | 2021-04-07 | 2021-04-07 | Remanufacturing and using method of waste planar spline broach |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113102958A CN113102958A (en) | 2021-07-13 |
| CN113102958B true CN113102958B (en) | 2022-06-10 |
Family
ID=76714307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110372371.2A Active CN113102958B (en) | 2021-04-07 | 2021-04-07 | Remanufacturing and using method of waste planar spline broach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113102958B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209509B1 (en) * | 1999-04-29 | 2001-04-03 | K-Line Industries, Inc. | Bearing insert for supporting rotatable shafts, method of repair, and related broach tool |
| CN101670536A (en) * | 2009-10-13 | 2010-03-17 | 六安江淮永达机械制造有限公司 | Special circular broach numerical control cutter-sharpening machine tool |
| CN102009228A (en) * | 2010-10-21 | 2011-04-13 | 江苏盐城市建民工具有限公司 | Involute spline broach and broaching method thereof |
| CN104669077A (en) * | 2015-03-11 | 2015-06-03 | 成都格润特高新材料有限公司 | Method for processing back angle of side edge of broach |
| CN207026601U (en) * | 2017-07-01 | 2018-02-23 | 天津市恒兴致业机械制造有限公司 | A kind of broaching machine of holder for regulating tool holder height |
| CN109822404A (en) * | 2019-03-18 | 2019-05-31 | 哈尔滨汽轮机厂有限责任公司 | A kind of steam turbine concave-groove broaching special reconditioning reconditioning method for determination of amount of roughing broach |
-
2021
- 2021-04-07 CN CN202110372371.2A patent/CN113102958B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6209509B1 (en) * | 1999-04-29 | 2001-04-03 | K-Line Industries, Inc. | Bearing insert for supporting rotatable shafts, method of repair, and related broach tool |
| US6470846B1 (en) * | 1999-04-29 | 2002-10-29 | K-Line Industries, Inc. | Broach tool and method of repair |
| CN101670536A (en) * | 2009-10-13 | 2010-03-17 | 六安江淮永达机械制造有限公司 | Special circular broach numerical control cutter-sharpening machine tool |
| CN102009228A (en) * | 2010-10-21 | 2011-04-13 | 江苏盐城市建民工具有限公司 | Involute spline broach and broaching method thereof |
| CN104669077A (en) * | 2015-03-11 | 2015-06-03 | 成都格润特高新材料有限公司 | Method for processing back angle of side edge of broach |
| CN207026601U (en) * | 2017-07-01 | 2018-02-23 | 天津市恒兴致业机械制造有限公司 | A kind of broaching machine of holder for regulating tool holder height |
| CN109822404A (en) * | 2019-03-18 | 2019-05-31 | 哈尔滨汽轮机厂有限责任公司 | A kind of steam turbine concave-groove broaching special reconditioning reconditioning method for determination of amount of roughing broach |
Non-Patent Citations (1)
| Title |
|---|
| 榫槽组合拉刀的修磨方法;王瑞兰;《工具技术》;19961231;第24-27页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113102958A (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2011285540B2 (en) | Abrasive tool and a method for finishing complex shapes in workpieces | |
| JP5641204B2 (en) | Christmas cutter and turbine blade root cutting method using the same | |
| CN113102958B (en) | Remanufacturing and using method of waste planar spline broach | |
| CN102990086A (en) | Integrated deburring finish machining turning method and cutter | |
| CN214980174U (en) | Numerical control honing cutter | |
| CN214321958U (en) | Composite milling cutter | |
| CN113649633A (en) | Corrugated spiral milling cutter for finish machining of aerospace materials | |
| CN201455308U (en) | Moveable machine clamp turning tool | |
| CN108581401A (en) | A kind of R10 arc lathe tools processing method | |
| CN214417750U (en) | Large-feed high-speed precise CBN face milling blade | |
| CN218341148U (en) | Alloy cutter block blank | |
| CN109551045A (en) | A kind of reusable carbide broach | |
| CN209830374U (en) | Polycrystalline diamond drill bit with W-shaped drill tip cutting edge | |
| CN214023701U (en) | Automatic precision machining part with long service life for metal product | |
| CN219275326U (en) | Tool for sharpening scraping hob | |
| CN218016037U (en) | Cutter without feed trace | |
| CN203076610U (en) | Cutter for cylindrical turning surface finishing | |
| CN210173343U (en) | High-efficiency cutting blade of grinding wheel machine | |
| CN111940885B (en) | Split type welding electrode coping cutter | |
| CN113601265B (en) | Method for estimating energy consumption ratio of front tool face and rear tool face of cutter in machining | |
| CN217529507U (en) | Thread milling cutter with deburring function based on aircraft engine | |
| CN115401431B (en) | Processing technology of waste milling cutter | |
| CN112355583B (en) | Method for recycling waste alloy cutter | |
| CN214108954U (en) | Milling cutter with high wear resistance | |
| CN214134173U (en) | Milling cutter with smoothing edge |
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 |