CN111112698A - Wear-resisting mould steel twist drill - Google Patents
Wear-resisting mould steel twist drill Download PDFInfo
- Publication number
- CN111112698A CN111112698A CN201911341812.1A CN201911341812A CN111112698A CN 111112698 A CN111112698 A CN 111112698A CN 201911341812 A CN201911341812 A CN 201911341812A CN 111112698 A CN111112698 A CN 111112698A
- Authority
- CN
- China
- Prior art keywords
- grinding
- groove
- excircle
- drill
- blade
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 12
- 239000010959 steel Substances 0.000 title claims abstract description 12
- 238000000227 grinding Methods 0.000 claims abstract description 49
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 238000003801 milling Methods 0.000 claims abstract description 5
- 238000000137 annealing Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000005488 sandblasting Methods 0.000 claims abstract description 4
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
-
- 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
- B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling Tools (AREA)
Abstract
The invention discloses a wear-resistant die steel twist drill, and the processing technology comprises the following steps: cutting the edge part and the handle part → flat end face → welding → annealing → turning welding → turning drill tip → drilling end process hole → turning blank excircle → grinding excircle → cleaning → rolling groove and the back of the blade → cutting tip → grinding tip → straightening → turning handle part → rough grinding edge excircle → heat treatment → sand blasting straightening → polishing groove → grinding center hole → grinding handle part excircle → grinding edge part excircle → cutting edge → marking → antirust packaging. The adjusting difficulty of the four-high mill is reduced, the precision of the symmetry degree of the drill core is improved, the production efficiency is greatly improved, and the cost is saved. When the groove milling and back grinding process is adopted, the blade back sector plate has no blade groove, and the drill bit is simple in section, so that the generation of cracks at the blade area is avoided.
Description
Technical Field
The invention relates to the field of twist drill processing, in particular to a wear-resistant die steel twist drill.
Background
Twist drills are tools that drill round holes in a workpiece by rotary cutting thereof about a fixed axis. The flute is spiral and shaped like twist. The helical groove has 2, 3 or more grooves, but 2 grooves are most common. Twist drills can be used with hand twist drill-held drilling tools, drilling machines, milling machines, lathes and even machining centers, both manual and electric. The bit material is typically high speed tool steel or cemented carbide. However, the hardness of the stainless steel processed by the conventional twist drill is insufficient, the stainless steel belongs to a material difficult to process, the stainless steel processed by the conventional twist drill is subjected to work hardening and cutter sticking to disturb normal processing, and the conventional cutter cannot meet the requirements of the conventional cutter.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the wear-resistant die steel twist drill, which overcomes the problems of difficult chip removal, tool breakage caused by machining hardening and the like during the machining of stainless steel, greatly improves the production efficiency and saves the cost.
In order to achieve the aim of the invention, the invention adopts the specific scheme that:
a wear-resistant die steel twist drill comprises the following processing steps: cutting the edge part and the handle part → flat end face → welding → annealing → turning welding → turning drill tip → drilling end process hole → turning blank excircle → grinding excircle → cleaning → rolling groove and the back of the blade → cutting tip → grinding tip → straightening → turning handle part → rough grinding edge excircle → heat treatment → sand blasting straightening → polishing groove → grinding center hole → grinding handle part excircle → grinding edge part excircle → cutting edge → marking → antirust packaging.
Further, the technical scheme that the edge groove and the edge zone are respectively formed is as follows: rolling out a blade groove of the drill bit on a four-roller mill, and then grinding out a blade back excircle (a blade zone is formed at the same time) of the drill bit on a special grinding machine; the process route is as follows: rolling a groove → passing through grinding an excircle → cutting a tip and chamfering → heat treatment → passing through grinding the excircle → finely grinding the excircle → grinding a back → grinding a drill tip.
Further, when the groove rolling and back grinding process principle adopts the groove rolling and back grinding process to roll the groove, the original four-roller rolling mill is adopted, only the section shape of the two blade back sector plates is changed, namely no blade groove is formed, the two blade back sector plates only fix the section shape of the drill bit, and the blade back filling amount is adjusted.
Furthermore, the width and the depth of the blade groove on the blade back sector plate are different, the width is 0.45-0.95 mm, the depth is 0.55-1.15 mm, when the drill bit blank is hot-rolled, the drill bit blank is heated to be close to a melting state under the rolling action of the sector plate, the drill bit blank flows and extends along the hole pattern of the rolling mill, and the metal flowing into the blade groove forms a drill bit blade.
Furthermore, the groove is rolled by adopting a groove rolling and back grinding process, and the blade zone is formed independently, so that the adjustment difficulty of a four-high mill is reduced, and the precision of the symmetry degree of the drill core is improved.
The invention has the beneficial effects that:
the problems that a cutter is broken due to difficult chip removal and work hardening during the processing of stainless steel are solved, the required hole can be smoothly drilled on the stainless steel, the adjusting difficulty of a four-high mill is reduced, the precision of the symmetry degree of a drill core is improved, the production efficiency is greatly improved, and the cost is saved. When the groove milling and back grinding process is adopted, the blade back sector plate has no blade groove, and the drill bit is simple in section, so that the generation of cracks at the blade area is avoided.
Detailed Description
The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.
A wear-resistant die steel twist drill comprises the following processing steps: cutting the edge part and the handle part → flat end face → welding → annealing → turning welding → turning drill tip → drilling end process hole → turning blank excircle → grinding excircle → cleaning → rolling groove and the back of the blade → cutting tip → grinding tip → straightening → turning handle part → rough grinding edge excircle → heat treatment → sand blasting straightening → polishing groove → grinding center hole → grinding handle part excircle → grinding edge part excircle → cutting edge → marking → antirust packaging.
The technical scheme for respectively forming the blade groove and the blade zone is as follows: rolling out a blade groove of the drill bit on a four-roller mill, and then grinding out a blade back excircle (a blade zone is formed at the same time) of the drill bit on a special grinding machine; the process route is as follows: rolling a groove → passing through grinding an excircle → cutting a tip and chamfering → heat treatment → passing through grinding the excircle → finely grinding the excircle → grinding a back → grinding a drill tip.
When the groove is rolled by adopting the groove-rolling back-grinding process principle, the original four-roller rolling mill is adopted, only the section shape of the two back-of-edge sector plates is changed, namely no edge groove is formed, the section shape of the drill bit is fixed only by the two back-of-edge sector plates, and the filling amount of the back-of-edge is adjusted.
The width and the depth of the blade groove on the blade back sector plate are different, the width is 0.45-0.95 mm, the depth is 0.55-1.15 mm, when hot rolling is carried out, the drill bit blank is heated to be close to a melting state under the rolling action of the sector plate, the drill bit blank flows and extends along the hole pattern of the rolling mill, and metal flowing into the blade groove forms a drill bit blade.
The groove is rolled by adopting the groove back grinding process, and the blade zone is formed independently, so that the adjustment difficulty of a four-roller rolling mill is reduced, and the precision of the symmetry degree of the drill core is improved.
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 present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. The wear-resistant die steel twist drill is characterized by comprising the following steps: cutting the edge part and the handle part → flat end face → welding → annealing → turning welding → turning drill tip → drilling end process hole → turning blank excircle → grinding excircle → cleaning → rolling groove and the back of the blade → cutting tip → grinding tip → straightening → turning handle part → rough grinding edge excircle → heat treatment → sand blasting straightening → polishing groove → grinding center hole → grinding handle part excircle → grinding edge part excircle → cutting edge → marking → antirust packaging.
2. A wear-resistant die steel twist drill according to claim 1, characterized by the process scheme that the flute and the land are formed separately: rolling out a blade groove of the drill bit on a four-roller mill, and then grinding out a blade back excircle (a blade zone is formed at the same time) of the drill bit on a special grinding machine; the process route is as follows: rolling a groove → passing through grinding an excircle → cutting a tip and chamfering → heat treatment → passing through grinding the excircle → finely grinding the excircle → grinding a back → grinding a drill tip.
3. The wear-resistant die steel twist drill according to claim 1, wherein when the groove is milled by the groove milling and back milling process, the original four-roll mill is adopted, only the section shape of the two back-of-edge sector plates is changed, namely no edge groove is formed, the two back-of-edge sector plates only serve to fix the section shape of the drill bit, and the filling amount of the back-of-edge is adjusted.
4. A wear-resistant die steel twist drill as claimed in claim 1, wherein the land on the land sector plate has a groove of varying width and depth, 0.45 to 0.95mm in width and 0.55 to 1.15mm in depth, and the drill blank is heated by rolling of the sector plate to a temperature close to melting and flows along the pass of the rolling mill to form a drill land in the metal flowing into the groove.
5. The wear-resistant die steel twist drill according to claim 1, wherein a groove rolling and back grinding process is adopted for groove rolling, and the blade zone is formed independently, so that the adjustment difficulty of a four-roller mill is reduced, and the precision of the symmetry degree of the drill core is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341812.1A CN111112698A (en) | 2019-12-24 | 2019-12-24 | Wear-resisting mould steel twist drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341812.1A CN111112698A (en) | 2019-12-24 | 2019-12-24 | Wear-resisting mould steel twist drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111112698A true CN111112698A (en) | 2020-05-08 |
Family
ID=70501461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911341812.1A Pending CN111112698A (en) | 2019-12-24 | 2019-12-24 | Wear-resisting mould steel twist drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111112698A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590492A (en) * | 2008-05-30 | 2009-12-02 | 成都成量工具集团有限公司 | Straight shank twist drill φ 1.35-1.95 rolls ditch mill back of the body technological method for processing |
| CN103639851A (en) * | 2013-12-25 | 2014-03-19 | 江苏晶工工具有限公司 | Drill bit cutting and grinding integrated machine |
| CN103707089A (en) * | 2013-12-25 | 2014-04-09 | 江苏晶工工具有限公司 | Drill bit clamping tool |
| CN108620837A (en) * | 2018-05-10 | 2018-10-09 | 河南工钻业有限公司 | It is a kind of first to roll the processing method for grinding fluted drill afterwards |
| CN109773437A (en) * | 2019-03-26 | 2019-05-21 | 丹阳市丹鹰工具制造有限公司 | A kind of processing technology of drill |
-
2019
- 2019-12-24 CN CN201911341812.1A patent/CN111112698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590492A (en) * | 2008-05-30 | 2009-12-02 | 成都成量工具集团有限公司 | Straight shank twist drill φ 1.35-1.95 rolls ditch mill back of the body technological method for processing |
| CN103639851A (en) * | 2013-12-25 | 2014-03-19 | 江苏晶工工具有限公司 | Drill bit cutting and grinding integrated machine |
| CN103707089A (en) * | 2013-12-25 | 2014-04-09 | 江苏晶工工具有限公司 | Drill bit clamping tool |
| CN108620837A (en) * | 2018-05-10 | 2018-10-09 | 河南工钻业有限公司 | It is a kind of first to roll the processing method for grinding fluted drill afterwards |
| CN109773437A (en) * | 2019-03-26 | 2019-05-21 | 丹阳市丹鹰工具制造有限公司 | A kind of processing technology of drill |
Non-Patent Citations (1)
| Title |
|---|
| 李兆江等: "直柄麻花钻的轧沟磨背工艺", 《工具技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111805185A (en) | A method for machining tubular parts with cavity | |
| CN112453508B (en) | A PCD drilling, milling and chamfering tool for machining composite material holes | |
| CN101234467A (en) | QS-4 elastic body processing technique for sensor | |
| CN101439557B (en) | Method for producing diamond circular saw film base body for mine | |
| CN201168805Y (en) | Soft metal super long deep hole processing tool | |
| CN101733452A (en) | Drilling and reaming powerful drill | |
| CN107042329A (en) | For the milling method of chill product | |
| CN100406179C (en) | Cutting saw blade production process | |
| CN105525230A (en) | Method for manufacturing cutting tools from high-speed W18Cr4Nb material | |
| CN201609781U (en) | Drilling-reaming type powerful drill | |
| CN105665805A (en) | Indexable crown ball-end milling cutter special for quenched steel die | |
| CN103128520B (en) | Machining method of deep-hole alloy reamer | |
| CN108032047B (en) | A kind of processing installation method of scrap cutter | |
| CN100445024C (en) | Processing method of high speed steel tap | |
| CN105478925A (en) | Improved technology for machining thread ring gages | |
| CN104827244A (en) | Conical screw rod processing method | |
| CN108176959B (en) | A kind of processing method of scrap cutter tool apron | |
| CN109773437A (en) | A kind of processing technology of drill | |
| CN105014125B (en) | A kind of double-sided blade fluting chit drill suitable for rotating processing | |
| CN108620837A (en) | It is a kind of first to roll the processing method for grinding fluted drill afterwards | |
| CN215698058U (en) | Welding tool assembly | |
| CN201168811Y (en) | Staggered Deep Hole Machining Tool | |
| CN101134249A (en) | Hard alloy accurately-processed finger-type milling tool and process technique | |
| CN101134255B (en) | Cemented carbide finishing comb cutter and processing method | |
| CN115740999A (en) | Improved process for process hole of extrusion die |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
|
| RJ01 | Rejection of invention patent application after publication |