CN113385702B - Combined cutter for finish machining of flange hollow pipe - Google Patents
Combined cutter for finish machining of flange hollow pipe Download PDFInfo
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- CN113385702B CN113385702B CN202110780557.1A CN202110780557A CN113385702B CN 113385702 B CN113385702 B CN 113385702B CN 202110780557 A CN202110780557 A CN 202110780557A CN 113385702 B CN113385702 B CN 113385702B
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention relates to the technical field of machining and provides a flange hollow tube finish machining combined cutter which comprises a cutter head, a connecting part and a cutter bar which are sequentially connected, wherein a first blade is arranged at the left rear corner of the cutter head, a second blade is arranged at the left front corner of the cutter head, the first blade is used for machining the end faces of all outer circles of a flange hollow tube, and the second blade is used for boring holes with all sizes in the flange hollow tube. According to the finish machining combined cutter, double cutting blades are designed on the finish turning cutter, one blade is used for machining the end faces of all outer circles of the flange hollow tube, and the other blade is used for boring holes with all sizes in the flange hollow tube; in the processing process, the invention does not need to rotate a tool rest, and the inner hole and the outer circle of the end face are processed at one time. The invention not only improves the processing efficiency, but also ensures the processing precision, and the product percent of pass reaches 100 percent.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a finish machining combined cutter for a flange hollow pipe.
Background
At present, in the lathe cutting industry, a cutter head of a turning tool is provided with a blade, one turning tool can only finish one group of size processing at one turning tool indexing, when the other group of size processing is performed, the tool is required to be quickly retracted, after the tool rest is far away from a workpiece, the tool rest is turned to the other turning tool position, then the tool is quickly fed to the vicinity of the workpiece, and the other group of size processing is performed.
When the lathe is used for processing disc parts with planes and inner holes, the defects of the lathe tool bit for installing a single blade are that: 1. the machining precision is low, and the efficiency is low: the tool rest rotates frequently, and although the tool rest rotates, the tool rest still has errors, the precision of the numerical control lathe can only reach 0.05mm, and when the tool rest positioning device is worn seriously, the error reaches more than 0.15mm, so that the product quality is seriously affected; and the long distance rapid movement and the tool rest rotation require additional time, which seriously affects the machining efficiency. The error is larger after the tool rest of the common lathe rotates, the finish machining can be carried out only by re-aligning the tool, and the efficiency is low; 2. the tool rest is seriously damaged: the tool rest rotates frequently, has protective measures but is more serious in abrasion and is often damaged, and the tool rest cannot be repaired infinitely, so that accessories are replaced or scrapped to a certain extent; 3. the guide rail is severely worn: the abrasion of the guide rail for feeding the cutter rapidly at the same distance is 4 times of that of the guide rail for feeding the cutter slowly, and the abrasion of the guide rail can also cause the loss of precision of the numerical control lathe; 4. shortens the service life of the synchronous motor and the ball screw: the tool rest moves fast in long distance, and the ball screw is driven to finish through the fast rotation of the synchronous motor, so that the tool rest frequently and fast retreats and feeds, the service life of the synchronous motor is influenced, and the abrasion of the ball screw is accelerated.
Disclosure of Invention
The invention aims to overcome at least one of the defects and shortcomings in the prior art and provides a flange hollow tube finish machining combined cutter which improves work efficiency and ensures precision. The invention is realized based on the following technical scheme:
the invention provides a flange hollow tube finish machining combined cutter, which comprises a cutter head, a connecting part and a cutter bar which are sequentially connected, wherein a first cutter blade is arranged at the left rear corner of the cutter head, a second cutter blade is arranged at the left front corner of the cutter head, the first cutter blade is used for machining all outer circular end faces of a flange hollow tube, the second cutter blade is used for boring holes with all sizes in the flange hollow tube, a left cutter blade is arranged on the first cutter blade, an inclined first chip rolling groove is arranged on the upper surface of the first cutter blade in parallel at a certain distance from the left cutter blade, the distance from the left rear corner alpha of the first cutter blade to the front side surface of the cutter head is 1-3 mm, the left rear corner alpha of the first cutter blade is 84-88 DEG, and the included angles between two sides forming the left rear corner alpha and two sides corresponding to the cutter head are all 1-3 DEG; the second blade is provided with a front blade, a second chip winding groove is formed in parallel at a position, which is a certain distance away from the front blade, of the upper surface of the second blade, the left front angle beta of the second blade exceeds the cutter head, the left front angle beta of the second blade is 81-85 degrees, the included angles between two sides forming the left front angle beta and two corresponding sides of the cutter head are respectively 3-5 degrees in the longitudinal direction and 2-4 degrees in the transverse direction, and the left blade and the front blade are located on the same plane.
Preferably, the first and second inserts are welded to the cutter head by brazing.
Preferably, the Y-axis longitudinal cross-sectional structure of the first chip pocket includes a first straight line segment inclined downward from the left rear corner of the first blade upper surface and a first circular arc segment extending from the bottom of the straight line segment to the first blade upper surface, and/or the X-axis longitudinal cross-sectional structure of the second chip pocket includes a second straight line segment inclined downward from the left front corner of the second blade upper surface and a second circular arc segment extending from the bottom of the straight line segment to the second blade upper surface.
Preferably, the maximum depth of the first chip winding groove is 0.4-0.8 mm and the width is 3-5 mm, and/or the maximum depth of the second chip winding groove is 0.4-0.8 mm and the width is 3-5 mm.
Preferably, the included angle between the first straight line segment and the upper surface of the first blade is 15-22 degrees, and/or the included angle between the second straight line segment and the upper surface of the second blade is 15-22 degrees.
Preferably, the first chip winding groove is arranged 0.05-0.2 mm away from the left cutting edge, and/or the second chip winding groove is arranged 0.05-0.2 mm away from the front cutting edge.
Preferably, a third arc part is arranged between the side surface and the bottom surface of the cutter head, the curvature radius of the third arc part is 18-22 mm, and/or the left side surface of the cutter bar is arc-shaped, and the curvature radius of the left side surface is 18-22 mm.
Preferably, the included angle between the lower cutter surface of the left cutter edge and the vertical direction is 5-10 degrees, the included angle between the upper cutter surface and the horizontal direction is 3-8 degrees, and/or the included angle between the lower cutter surface of the front cutter edge and the vertical direction is 5-10 degrees, and the included angle between the upper cutter surface and the horizontal direction is 3-8 degrees.
Preferably, the diameter of the connecting portion is smaller than the width of the cutter head and the width of the cutter bar.
Preferably, the combined cutter is not chamfered at 1.5×45 °.
The invention can at least obtain one of the following beneficial effects:
according to the finish machining combined cutter, double cutting blades are designed on the finish turning cutter, one blade is used for machining the end faces of all outer circles of the flange hollow tube, and the other blade is used for boring holes with all sizes in the flange hollow tube; in the processing process, the invention does not need to rotate a tool rest, and the inner hole and the outer circle of the end face are processed at one time. The device of the invention not only improves the processing efficiency, but also ensures the processing precision, and the product percent of pass reaches 100 percent.
The invention also prolongs the service life of related equipment such as a lathe upper tool rest, a guide rail, a synchronous motor, a ball screw and the like, reduces the production cost, reduces the abrasion of the related equipment, reduces the machining positioning error, improves the machining precision, and has simple operation and high efficiency.
Drawings
FIG. 1 is a top view of a finish machining combination tool for a flanged hollow tube in accordance with a preferred embodiment of the invention;
FIG. 2 is a front view of the finish machining combined cutter structure for the flange hollow tube in the preferred embodiment of the invention;
FIG. 3 is a left side view of the structure of the combined tool for finish machining of the flange hollow tube according to the preferred embodiment of the present invention;
FIG. 4 is a schematic view of a partial enlarged structure at A in FIG. 2;
FIG. 5 is a schematic view of a partial enlarged structure at B in FIG. 3;
FIG. 6 is a schematic view of a partial enlarged structure at C in FIG. 4;
fig. 7 is a schematic view of a partial enlarged structure at D in fig. 5.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 7, a preferred embodiment of the present invention provides a flange hollow tube finishing combined tool, comprising a tool bit 1, a connecting part 2 and a tool bar 3 which are sequentially connected, wherein a first blade 4 is arranged at the left rear corner of the tool bit 1, a second blade 5 is arranged at the left front corner of the tool bit, the first blade 4 is used for processing each outer circular end face of the flange hollow tube, the second blade 5 is used for boring holes with each size in the flange hollow tube, a left cutting edge 44 is arranged on the first blade 4, inclined first chip rolling grooves 41 are arranged in parallel at a certain distance from the left cutting edge 44 on the upper surface of the first blade 4, the distance from the left rear angle alpha of the first blade 4 to the front side of the tool bit 1 is 1-3 mm, the left rear angle alpha of the first blade 4 is 84-88 DEG, and the included angles between two sides forming the left rear angle alpha and the two sides corresponding to the tool bit 1 are 1-3 DEG, so that the travel of the first blade 4 is not blocked by the outer circular structure of the flange hollow tube so as to process each outer circular end face thereof; the front blade 54 is arranged on the second blade 5, the second chip winding groove 51 is arranged on the upper surface of the second blade 5 in parallel at a certain distance from the front blade 54, the left front angle beta of the second blade 5 exceeds the cutter head 1, the left front angle beta of the second blade 5 is 81-85 degrees, the included angles between the two sides forming the left front angle beta and the two corresponding sides of the cutter head 1 are respectively 3-5 degrees in the longitudinal direction and 2-4 degrees in the transverse direction, so that the travel of the second blade 5 is not blocked by the inner structure of the flange hollow tube, and holes with various sizes of all parts of the flange hollow tube can be processed. The left blade 44 is coplanar with the front blade 54 and does not affect other internal structures when machining the internal bore. The cut chips are discharged by the first chip pocket 41 and the second chip pocket 51.
In this embodiment, the first and second blades 4, 5 are welded to the cutter head 1 by brazing, and the joint strength is high, the joint is free from leakage, and the highest temperature limit condition can be endured.
In the present embodiment, the Y-axis longitudinal cross-sectional structure of the first chip pocket 41 includes a first straight line segment 42 inclined downward from the left rear corner of the upper surface of the first blade 4 and a first circular arc segment 43 extending from the bottom of the straight line segment to the upper surface of the first blade 4, and/or the X-axis longitudinal cross-sectional structure of the second chip pocket 51 includes a second straight line segment 52 inclined downward from the left front corner of the upper surface of the second blade 5 and a second circular arc segment 53 extending from the bottom of the straight line segment to the upper surface of the second blade 5. The chip guiding effect is good, the chip is guided out along the inclined plane, and the chip is bent and deformed in the guiding process so as to be broken.
In the present embodiment, the maximum depth of the first chip groove 41 is 0.4 to 0.8mm and the width is 3 to 5mm, and/or the maximum depth of the second chip groove 51 is 0.4 to 0.8mm and the width is 3 to 5mm.
In this embodiment, the included angle between the first straight line segment 42 and the upper surface of the first blade 4 is 15-22 °, and/or the included angle between the second straight line segment 52 and the upper surface of the second blade 5 is 15-22 °, which is beneficial for guiding chips along an inclined plane, so that the guiding process is smoother.
In this embodiment, the first chip pocket 41 is located 0.05-0.2 mm from the left edge 44 and/or the second chip pocket 51 is located 0.05-0.2 mm from the front edge 54. The chip can enter the chip rolling groove, and the chip is prevented from being accumulated and blocked on the cutter head.
In the embodiment, a third arc part 11 is arranged between the side surface and the bottom surface of the tool bit 1, and the curvature radius of the third arc part 11 is 18-22 mm so as to adapt to the shape of the inner hole of the flange hollow tube. The left side face 31 of the cutter bar 3 is arc-shaped, and the curvature radius of the left side face 31 is 18-22 mm so as to adapt to the shape of the inner hole of the flange hollow tube.
In this embodiment, the angle between the lower blade surface 45 of the left blade 44 and the vertical direction is 5 to 10 °, the angle between the upper blade surface 46 and the horizontal direction is 3 to 8 °, and/or the angle between the lower blade surface 55 of the front blade 54 and the vertical direction is 5 to 10 °, and the angle between the upper blade surface 56 and the horizontal direction is 3 to 8 °. The left blade 44 and the front blade 54 have strong cutting action, and can efficiently process the flange hollow tube.
In this embodiment, the diameter of the connecting portion 2 is smaller than the width of the cutter head 1 and the width of the cutter bar 3, facilitating the mounting of the cutter head 1 and the cutter bar 3.
In this embodiment, the composite cutter is not chamfered at 1.5×45 °. On the one hand, the burrs are removed, so that the appearance is attractive; on the other hand, the stress concentration can be reduced, and the strength of the cutter can be enhanced.
According to the finish machining combined cutter, double cutting blades are designed on the finish turning cutter, one blade is used for machining the end faces of all outer circles of the flange hollow tube, and the other blade is used for boring holes with all sizes in the flange hollow tube; in the processing process, the invention does not need to rotate a tool rest, and the inner hole and the outer circle of the end face are processed at one time. The device can be directly additionally arranged on the tool rest of a common CA6140 lathe to process the inner hole and the end face outer circle of the hollow pipe of the flange, and the tool rest is not required to be rotated, so that the processing efficiency is improved, the processing precision is ensured, and the product percent of pass reaches 100%. The invention also prolongs the service life of related equipment such as a lathe upper tool rest, a guide rail, a synchronous motor, a ball screw and the like, reduces the production cost, reduces the abrasion of the related equipment, reduces the machining positioning error, improves the machining precision, and has simple operation and high efficiency.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, it will be apparent to those skilled in the art that the foregoing description of the preferred embodiments of the present invention can be modified or equivalents can be substituted for some of the features thereof, and any modification, equivalent substitution, improvement or the like that is within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (9)
1. The flange hollow tube finish machining combined cutter is characterized by comprising a cutter head (1), a connecting part (2) and a cutter bar (3) which are sequentially connected, wherein a first cutter blade (4) and a second cutter blade (5) are arranged at the left rear corner of the cutter head (1), the first cutter blade (4) is used for machining all outer circular end faces of a flange hollow tube, the second cutter blade (5) is used for boring holes with all sizes in the flange hollow tube, a left cutter blade (44) is arranged on the first cutter blade (4), inclined first chip rolling grooves (41) are formed in parallel at a certain distance from the upper surface of the first cutter blade (4) to the left cutter blade (44), the distance from the left rear angle alpha of the first cutter blade (4) to the front side of the cutter head (1) is 1-3 mm, and the included angles between the two sides of the left rear angle alpha of the first cutter blade (4) and the two sides of the cutter head (1) are 1-3 degrees; the second blade (5) is provided with a front blade (54), a second chip rolling groove (51) is formed in parallel at a certain distance from the front blade (54) on the upper surface of the second blade (5), the left front angle beta of the second blade (5) exceeds the cutter head (1), the left front angle beta of the second blade (5) is 81-85 degrees, the included angles between two sides forming the left front angle beta and two sides corresponding to the cutter head (1) are respectively 3-5 degrees in the longitudinal direction and 2-4 degrees in the transverse direction, and the left blade (44) and the front blade (54) are located on the same plane;
the Y-axis longitudinal section structure of the first chip reeling groove (41) comprises a first straight line section (42) which is inclined downwards from the left rear corner of the upper surface of the first blade (4) and a first circular arc section (43) which is extended from the bottom of the straight line section to the upper surface of the first blade (4), and/or the X-axis longitudinal section structure of the second chip reeling groove (51) comprises a second straight line section (52) which is inclined downwards from the left front corner of the upper surface of the second blade (5) and a second circular arc section (53) which is extended from the bottom of the straight line section to the upper surface of the second blade (5).
2. A flanged hollow tube finishing combined tool according to claim 1, characterized in that the first blade (4) and the second blade (5) are welded to the tool head (1) by brazing.
3. A flanged hollow tube finishing gang tool according to claim 1, characterized in that the maximum depth of the first chip-rolling groove (41) is 0.4-0.8 mm, the width is 3-5 mm, and/or the maximum depth of the second chip-rolling groove (51) is 0.4-0.8 mm, the width is 3-5 mm.
4. A flanged hollow tube finishing cutter assembly according to claim 1, characterized in that the angle between the first straight line section (42) and the upper surface of the first blade (4) is 15-22 ° and/or the angle between the second straight line section (52) and the upper surface of the second blade (5) is 15-22 °.
5. A flanged hollow tube finishing gang tool according to claim 1, characterized in that the first chip-rolling groove (41) is arranged 0.05-0.2 mm from the left blade (44) and/or the second chip-rolling groove (51) is arranged 0.05-0.2 mm from the front blade (54).
6. A flange hollow tube finishing combined tool as claimed in claim 1, characterized in that a third arc part (11) is arranged between the side surface and the bottom surface of the tool bit (1), the radius of curvature of the third arc part (11) is 18-22 mm, and/or the left side surface (31) of the tool bar (3) is arc-shaped, and the radius of curvature of the left side surface (31) is 18-22 mm.
7. A flanged hollow tube finishing combined cutter according to claim 1, characterized in that the angle between the lower cutter surface (45) of the left cutting edge (44) and the vertical direction is 5-10 °, the angle between the upper cutter surface (46) and the horizontal direction is 3-8 °, and/or the angle between the lower cutter surface (55) of the front cutting edge (54) and the vertical direction is 5-10 °, and the angle between the upper cutter surface (56) and the horizontal direction is 3-8 °.
8. A flanged hollow tube finishing combined tool according to claim 1, characterized in that the diameter of the connecting portion (2) is smaller than the width of the tool head (1) and the width of the tool shank (3).
9. A flanged hollow tube finishing gang tool of claim 1, wherein the gang tool has a no-chamfer angle of 1.5 x 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780557.1A CN113385702B (en) | 2021-07-09 | 2021-07-09 | Combined cutter for finish machining of flange hollow pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110780557.1A CN113385702B (en) | 2021-07-09 | 2021-07-09 | Combined cutter for finish machining of flange hollow pipe |
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| Publication Number | Publication Date |
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| CN113385702A CN113385702A (en) | 2021-09-14 |
| CN113385702B true CN113385702B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110780557.1A Active CN113385702B (en) | 2021-07-09 | 2021-07-09 | Combined cutter for finish machining of flange hollow pipe |
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Families Citing this family (1)
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| WO2023132322A1 (en) * | 2022-01-05 | 2023-07-13 | 京セラ株式会社 | Cutting insert, cutting tool, and method for manufacturing cut workpiece |
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| CN113385702A (en) | 2021-09-14 |
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