CN108115158B - Finish machining lathe tool - Google Patents
Finish machining lathe tool Download PDFInfo
- Publication number
- CN108115158B CN108115158B CN201611070460.7A CN201611070460A CN108115158B CN 108115158 B CN108115158 B CN 108115158B CN 201611070460 A CN201611070460 A CN 201611070460A CN 108115158 B CN108115158 B CN 108115158B
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- CN
- China
- Prior art keywords
- turning
- edge
- face
- turning tool
- tool
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- 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.)
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Links
- 238000003754 machining Methods 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- YWJQGSHYTRHJJH-UHFFFAOYSA-N [Co].[Ti].[W] Chemical group [Co].[Ti].[W] YWJQGSHYTRHJJH-UHFFFAOYSA-N 0.000 claims 1
- 230000003746 surface roughness Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000006748 scratching Methods 0.000 abstract description 2
- 230000002393 scratching effect Effects 0.000 abstract description 2
- 230000001788 irregular Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 241000251468 Actinopterygii Species 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/18—Cutting tools of which the bits or tips or cutting inserts are of special material with cutting bits or tips or cutting inserts rigidly mounted, e.g. by brazing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/005—Geometry of the chip-forming or the clearance planes, e.g. tool angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/12—Side or flank surfaces
- B23B2200/123—Side or flank surfaces curved
Abstract
The invention provides a finish machining turning tool which comprises a turning tool body and an irregular turning tool blade, wherein a main cutting edge and an auxiliary cutting edge of the irregular turning tool blade are R40-50mm circular arcs, the length of the edge is 8-10mm, a main rear tool face is an R6-R7mm circular arc face, an auxiliary rear tool face is an R6.5-R8mm circular arc face, an arc edge is arranged at the intersection between the main rear tool face and the auxiliary rear tool face of the irregular turning tool blade, and the edge is used as a cutting edge to participate in turning in the turning process. The invention can effectively improve the stress condition of the cutter and the discharge direction of the cutting chips when the cutting depth is less than 0.05mm in the finish turning process, avoids the problems of vibration, squeezing cutting and scratching of the processed surface by the cutting chips, carries out finishing processing while turning and reduces the difficulty of finish turning and the surface roughness of a workpiece.
Description
Technical Field
The invention relates to the technical field of machining tools, in particular to a finish machining turning tool.
Background
The turning tool is a necessary tool for finishing turning, and comprises an external turning tool, an internal turning tool, a grooving turning tool, a threading turning tool and the like, wherein the selection of the turning tool directly influences the turning effect, the turning comprises two parts of rough turning and finish turning, and the finish turning aims at removing finish machining allowance and simultaneously ensuring the size precision and the surface roughness of a workpiece, so the finish turning directly influences whether the processed workpiece meets the drawing requirement and the use requirement, but the size precision and the surface roughness of the workpiece are ensured due to the influence of factors such as the tool, a clamp, a machine tool, vibration, temperature and the like in the finish turning process, certain difficulty exists, especially when the finish turning allowance is less than 0.05mm, ideal surface roughness is difficult to process, in addition, a plurality of tool nose parts are frequently used in the finish turning process, the working environment is severe, and the thermal capacity is small, and effective lubrication cannot be obtained, the tool is easy to wear, the service life of the tool is influenced, and meanwhile, when the finish turning allowance is smaller than 0.05mm during finish turning, the surface roughness of a workpiece is difficult to guarantee under the influence of factors such as tool strength, blade structure and turning parameters, an operator is required to perform surface polishing treatment, the efficiency is reduced, and the cost is increased.
Disclosure of Invention
In view of the above problems, the present invention provides a turning tool with turning and trimming functions, which is specially used for finish machining of cylindrical surfaces and end faces of workpieces. The turning tool provided by the invention can solve the problem that the qualified roughness is not easy to cut on the surface of a workpiece when the finish turning allowance is less than 0.05 mm.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a finish machining lathe tool, includes lathe tool body and dysmorphism blade, and lathe tool body head is equipped with blade welding groove, and the inslot welding has special-shaped blade.
The special-shaped blade is characterized in that a main cutting edge and an auxiliary cutting edge of the special-shaped blade are circular arcs of R40-50mm, the blade length is 8-10mm, a main rear cutter face is an arc surface of R6-R7mm, an auxiliary rear cutter face is an arc surface of R6.5-R8mm, a circular arc edge is formed at the intersection of the main rear cutter face and the auxiliary rear cutter face, the shape and the space position of the circular arc edge can be controlled by changing the size of the circular arcs of the main rear cutter face and the auxiliary rear cutter face, and the height of the center line of the circular arc edge can be adjusted by adjusting the height of a turning tool body in the finish. The size of adjustment main back knife face and vice back knife face circular arc can make the lathe tool when having sufficient intensity, and convex edge is sharper, the production of effective control cutting heat and cutting vibration, the spatial position of control circular arc edge simultaneously to make tiny smear metal flow direction work piece treat machined surface one side, avoid the smear metal fish tail machined surface. The center line of the arc edge is controlled to be 0.03-0.05mm higher than the center line of the workpiece by adjusting the height of the turning tool body, so that the polishing effect of the arc edge on the surface of the workpiece can be effectively controlled.
The invention has the beneficial effects that:
through the selection to the main back knife face of lathe tool, vice back knife face shape and size, cutter structure and cutting edge position and shape have been changed to effectively improved the atress of finish turning processing and the discharge direction of smear metal, avoided vibration, crowded circumstances of cutting and smear metal fish tail machined surface, the smooth processing is carried out in the turning, the degree of difficulty and the workpiece surface roughness of finish machining turning have been reduced, the change of cutting edge position has improved the intensity and the wearability of knife tip in addition, the number of times of trading has been reduced, machining efficiency has been improved and the cutter cost has been reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the center height adjustment of the rounded edge of the present invention;
in the figure, 1 is a turning tool body, 2 is a special-shaped blade, and 3 is an equal-height cushion block.
Detailed Description
The following description of the preferred embodiments of the present invention is made with reference to the accompanying drawings and examples, and the scope of the present invention is not limited by the following examples.
As shown in fig. 1, the turning tool comprises a turning tool body 1 and a special-shaped blade 2, wherein a blade welding groove is formed in the head of the turning tool body, the special-shaped blade 2 is welded in the groove, the special-shaped blade 2 comprises a main rear blade surface a and an auxiliary rear blade surface b, and an arc-shaped edge is formed after the main rear blade surface a and the auxiliary rear blade surface b are intersected.
As shown in FIG. 2, the main cutting edge R of the profiled insert 21And a minor cutting edge R2Is R40-50mm circular arc, and has blade length L1And L2The diameter of the main relief face a is 8-10mm, the main relief face a is an arc surface from R6 to R7mm, and the auxiliary relief face b is an arc surface from R6.5 to R8 mm. Through the selection of different numerical values, the arc-shaped edges formed at the intersection of the main rear cutter face and the auxiliary rear cutter face are different, and when different workpiece materials and workpieces with different diameters are turned by finish machining, different numerical values need to be selected to achieve the optimal machining effect.
As shown in fig. 3, the arc-shaped edge formed at the intersection of the primary flank face and the secondary flank face is a cutting edge in the machining process, and the center height of the arc-shaped edge can be adjusted by adding the equal-height cushion block 3. The effect of smoothing the surface roughness of the workpiece is realized by adjusting the height of the center. According to the invention, the center height of the main cutting edge, the auxiliary cutting edge, the main rear cutter face, the auxiliary rear cutter face and the arc edge of the turning tool is selected, so that the stress of finish turning and the chip discharge direction are improved, the conditions of vibration, extrusion cutting and chip scratching of the processed surface are avoided, and the difficulty of finish turning is reduced.
Example (b):
(1) the method comprises the steps of selecting a YT15 material to finish turning an excircle turning tool, selecting a R47mm circular arc as a main cutting edge R1 and an auxiliary cutting edge R2 of a special-shaped blade 2, selecting 7mm in blade length, selecting a R6mm circular arc surface as a main rear blade surface a, selecting a R8mm circular arc surface as an auxiliary rear blade surface b, forming a circular arc edge inclined towards the main rear blade surface at the intersection of the main rear blade surface and the auxiliary rear blade surface, placing a contour cushion block 3 below a turning tool body 1, and measuring whether the center line of the circular arc edge is 0.03-0.05mm higher than the rotation axis of a workpiece through an external measuring tool, and continuously adjusting the height of the contour cushion block 3 until the center line of the circular arc edge is 0.03mm higher than the rotation axis of the.
(2) The diameter D of the outer circleOuter coverIs 35mm, and the medium carbon steel material with the length of 60mm is clamped on a numerical control lathe, extends out of a three-jaw chuck by 30mm, adopts an excircle rough turning tool to carry out rough turning processing, and is used for DOuter coverThe diameter of the steel is 35mm, the steel is processed to 30.02-30.03mm, and the allowance is 0.02-0.04mm for finish machining turning.
(3) And calculating finish machining turning parameters according to the diameter of the workpiece which is subjected to the rough machining in the previous step. And (3) performing outer circle finish machining turning by using the arc-shaped edge at the intersection of the main rear cutter face and the auxiliary rear cutter face as a cutting edge, and machining the outer circle to 30 +/-0.01 mm to obtain the workpiece with the surface roughness Ra of less than or equal to 1.6 mu m.
Claims (5)
1. The finish machining turning tool is characterized by comprising a turning tool body and a special-shaped blade, wherein a main cutting edge and an auxiliary cutting edge of the special-shaped blade are circular arcs with curvature radiuses of R40-50mm, the blade length is 8-10mm, a main rear cutter face is a circular arc face with curvature radiuses of R6-R7mm, an auxiliary rear cutter face is a circular arc face with curvature radiuses of R6.5-R8mm, the main rear cutter face and the auxiliary rear cutter face of the special-shaped blade are intersected to form a circular arc edge, and the center line of the circular arc edge is higher than the rotation axis of a workpiece by 0.03-0.05 mm.
2. A finish machining turning tool according to claim 1, wherein the turning tool body head is provided with a blade welding groove, and a special-shaped blade is welded in the groove.
3. A finishing tool as defined in claim 1 wherein said profiled insert is a tungsten-cobalt-titanium cemented carbide material.
4. A finish machining turning tool according to claim 1, characterized in that the rounded edge is involved in the turning as a cutting edge during finish machining turning and smoothes the workpiece.
5. The finish machining turning tool of claim 1, wherein the contour pads adjust the height of the center line of the rounded edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070460.7A CN108115158B (en) | 2016-11-29 | 2016-11-29 | Finish machining lathe tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611070460.7A CN108115158B (en) | 2016-11-29 | 2016-11-29 | Finish machining lathe tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108115158A CN108115158A (en) | 2018-06-05 |
| CN108115158B true CN108115158B (en) | 2020-05-19 |
Family
ID=62223810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611070460.7A Active CN108115158B (en) | 2016-11-29 | 2016-11-29 | Finish machining lathe tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108115158B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10113633B4 (en) * | 2001-03-21 | 2006-04-13 | Jakob Lach Gmbh & Co. Kg | Profile-turning tool |
| CN2761321Y (en) * | 2004-11-09 | 2006-03-01 | 株洲硬质合金集团有限公司 | Turning knife having edge smoothing blade |
| GB0907737D0 (en) * | 2009-05-06 | 2009-06-10 | Element Six Ltd | An insert for a cutting tool |
| CN202106052U (en) * | 2011-04-29 | 2012-01-11 | 天津市隆之珠模具科技有限公司 | Welding lathe tool for production of mould |
| CN103212727B (en) * | 2013-05-10 | 2015-01-07 | 吉林大学 | Integral bionic external turning tool |
-
2016
- 2016-11-29 CN CN201611070460.7A patent/CN108115158B/en active Active
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| Publication number | Publication date |
|---|---|
| CN108115158A (en) | 2018-06-05 |
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| Date | Code | Title | Description |
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| 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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20180605 Assignee: Tianjin Saixiang Technology Co.,Ltd. Assignor: TIANJIN University OF TECHNOLOGY AND EDUCATION Contract record no.: X2024980002695 Denomination of invention: A precision machining turning tool Granted publication date: 20200519 License type: Common License Record date: 20240312 |
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| EE01 | Entry into force of recordation of patent licensing contract |