CN115971545A - Method for machining oil groove in central hole of roller - Google Patents

Method for machining oil groove in central hole of roller Download PDF

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Publication number
CN115971545A
CN115971545A CN202211664329.9A CN202211664329A CN115971545A CN 115971545 A CN115971545 A CN 115971545A CN 202211664329 A CN202211664329 A CN 202211664329A CN 115971545 A CN115971545 A CN 115971545A
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machining
roller
oil groove
degrees
oil
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CN202211664329.9A
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CN115971545B (en
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郭立辉
冯冰钰
葛晓红
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Sinosteel Xingtai Machinery and Mill Roll Co Ltd
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Sinosteel Xingtai Machinery and Mill Roll Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse 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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Abstract

The invention discloses a method for processing an oil groove in a central hole of a roller, which belongs to the technical field of metallurgical processing, wherein conical surfaces of central holes at two ends of the roller which is horizontally placed are subjected to profile milling, so that 3 curved lines of an inner conical surface of the central hole of the roller with a plurality of angles and a small-diameter bottom hole and 120-degree even oil groove processing are realized, the sizes of various parts such as the taper, the width and the depth of an oil storage tank completely accord with the technical standard, the processing consistency is good, and the characteristics of high speed and high efficiency are realized.

Description

Method for machining oil groove in central hole of roller
Technical Field
The invention relates to the technical field of metallurgical processing, in particular to a method for processing an oil groove in a central hole of a roller.
Background
The center holes at two ends of the roller are used as the positioning reference for grinding the roller, and the precision of the center holes directly influences the form and position dimensional tolerance such as the roundness, the coaxiality and the like of a final product. 3 curved lines designed on the taper surface in the central hole and oil grooves evenly distributed according to 120 degrees are used for storing lubricating grease in the grinding process of the roller, a wedge-shaped oil film can be established between the tip and the central hole to play the roles of lubricating and reducing friction, and the phenomenon that the accuracy loss of the central hole is caused by heat deformation, grinding and the like to influence the dimensional tolerance control of a product is prevented. Due to the fact that the size and the weight of the roller are large, the types of central hole angles are many (60 degrees, 70 degrees, 75 degrees and 90 degrees), the diameters of bottom holes with small taper ends are small (8 mm), and the like, the difficulty in processing the central hole oil groove in the conventional turning, milling and grinding process is large, the central hole oil groove is processed in the manual carving and grinding mode, and the oil groove is large in size deviation and poor in consistency.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method for machining the oil grooves in the central holes of the rollers, which realizes high-speed and high-efficiency machining of 3 curved lines on the inner conical surfaces of the central holes with different angles and sizes and evenly distributing the oil grooves at 120 degrees.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for machining the oil grooves in the central hole of roller includes such steps as copying and milling the conic surfaces of central holes at both ends of roller to obtain 3 oil grooves with 120 deg. curvature.
The technical scheme of the invention is further improved as follows: the oil grooves are semicircular curves, 3mm in width and 2mm in depth, the starting points of the three oil grooves are on the same circumference, and the end points of the three oil grooves are on the end face of the roller.
The technical scheme of the invention is further improved as follows: the method comprises the following specific steps:
s1, horizontally placing a roller on a bracket;
s2, using a trademark engraving machine to clamp the spherical taper milling cutter, and aligning and coinciding the rotation center of the cutter with the central axis of the roller horizontally placed on the bracket;
s3, utilizing the three-axis linkage function of the trademark engraving machine, automatically determining a program starting point during machining according to parameters such as a spigot diameter, a bottom hole diameter and a cutter diameter after inputting machining parameters of an oil groove part in a module interface and selecting a machining angle, uniformly dividing three oil grooves in the direction of 360 degrees of the circumference, and calculating the depth during machining;
s4, each line is equally rotated according to 120 degrees in real time according to the machining depth, and is transformed in the vertical and horizontal directions in real time according to the polar coordinate axis on the corresponding plane according to the feeding depth, namely the coordinate value in the vertical direction is the reference circle R x sin (theta) of the current diameter, and the coordinate value in the vertical direction is the reference circle R x cos (theta) of the current diameter, so that the circumferential rotation is carried out on the corresponding plane while feeding in the depth direction, and the spiral machining effect is achieved on the whole conical surface;
and S5, after the first line is machined, retreating to a safe position, starting to mill the second line from the starting point of the second line, and finally carrying out the third line to complete the machining of the 3 curved oil grooves.
The technical scheme of the invention is further improved as follows: the spherical taper milling cutter comprises a cylindrical clamping handle, a conical transition part and a spherical cutting edge.
The technical scheme of the invention is further improved as follows: the spherical cutting edge is in an R2 spherical design and has a helix angle of 55 degrees.
The technical scheme of the invention is further improved as follows: the specification of the clamping handles is 6mm, the length of the conical transition part between the spherical cutting edge of R2 and the clamping handle of 6mm is 85mm, and the conicity is 30 degrees.
Due to the adoption of the technical scheme, the invention has the technical progress that:
by utilizing the processing method, the processing of 3 curved inner conical surfaces and 120-degree equipartition oil grooves of the roller central hole of multi-angle (60 degrees, 70 degrees, 75 degrees and 90 degrees) and small-diameter bottom holes (8 mm hot) is realized. The dimensions of the taper, the width, the depth and the like of the oil storage tank completely meet the technical standard, the processing consistency is good, the high-speed and high-efficiency characteristics are realized, and the processing time of the oil grooves in the central holes at the two ends of the single roller is 9min.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic view of the process of the present invention;
FIG. 2 is a schematic plan view of the sump of the present invention;
FIG. 3 is a schematic side view of the sump of the present invention;
FIG. 4 is a schematic view of the spherical taper milling cutter of the present invention;
the device comprises a trademark engraving machine 1, a spherical taper milling cutter 2, a roller 3, a bracket 4, a bracket 5 and an oil groove.
Detailed Description
The present invention is further illustrated in detail below with reference to examples:
a method for processing an oil groove in a central hole of a roller is disclosed, as shown in figure 1, the conical surfaces of the central holes at two ends of the roller which is horizontally placed are subjected to profile milling, and high-speed and high-efficiency processing of 3 curved lines on the inner conical surface of the central hole with different angles and sizes and evenly distributing the oil groove 5 at 120 degrees is realized.
Wherein, oil groove 5 is the semicircle curve, as shown in fig. 2, 3, and wide 3mm, dark 2mm can be at the most inside cylindrical space that sets up of roll centre bore, and the starting point of three oil groove 5 is on same circumference in inferior cylindrical space, and oil groove 5 terminal point is on 3 terminal surfaces of roll.
The spherical taper milling cutter 2 used in the machining method is structurally optimized, as shown in fig. 4, the optimized specific structure is that the spherical taper milling cutter 2 comprises a cylindrical clamping handle, a conical transition part and a spherical cutting edge. The spherical cutting edge at the front end of the milling cutter is designed into an R2 spherical shape, and the helical angle is 55 degrees, so that the milling cutter is light and quick to cut and reduces cutting resistance. The length of the conical transition part between the R2 spherical cutting edge and the 6mm clamping handle is 85mm, and the conical transition part is 30 degrees conical for enhancing the integral rigidity of the milling cutter, avoiding the interference with the conical surface of the central hole and simultaneously reducing the vibration.
The machining method of the oil groove in the center hole of the roller comprises the following specific steps:
s1, horizontally placing a roller 3 on a bracket 4;
s2, the spherical taper milling cutter 2 is clamped by the trademark engraving machine 1, and the rotation center of the cutter is aligned and superposed with the central axis of the roller 3 horizontally placed on the bracket 4;
s3, utilizing the three-axis linkage function of the trademark engraving machine 1, automatically determining a program starting point during machining according to parameters such as spigot diameter, bottom hole diameter and cutter diameter after inputting machining parameters of an oil groove part in a module interface and selecting a machining angle, equally dividing three oil grooves in the 360-degree direction of the circumference, and calculating the depth during machining;
s4, each line is equally rotated according to 120 degrees in real time according to the machining depth, and is transformed in the vertical and horizontal directions in real time according to the polar coordinate axis on the corresponding plane according to the feeding depth, namely the coordinate value in the vertical direction is the reference circle R x sin (theta) of the current diameter, and the coordinate value in the vertical direction is the reference circle R x cos (theta) of the current diameter, so that the circumferential rotation is carried out on the corresponding plane while feeding in the depth direction, and the spiral machining effect is achieved on the whole conical surface;
and S5, after the first line is machined, the machining process is returned to a safe position, the second line is milled from the starting point of the second line, and finally, the third line is machined to finish the machining of the 3 curved oil grooves 5.
By utilizing the processing method, 3 curved lines of the inner conical surface of the roller center hole with the small-diameter bottom hole at multiple angles and 120-degree uniform oil groove processing are realized. The oil storage tank has the characteristics of high speed and high efficiency, the sizes of the taper, the width, the depth and other parts of the oil storage tank completely accord with the technical standard, and the processing consistency is good.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention made by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims (6)

1. A method for processing an oil groove in a central hole of a roller is characterized by comprising the following steps: the conical surfaces of the central holes at the two ends of the horizontally placed roller are subjected to profile milling, and 3 curved oil grooves (5) which are uniformly distributed at 120 degrees are processed.
2. The method for machining the oil groove in the central hole of the roller according to claim 1, wherein the method comprises the following steps: the oil grooves (5) are semicircular curves, the width of each oil groove is 3mm, the depth of each oil groove is 2mm, the starting points of the three oil grooves (5) are located on the same circumference, and the end points of the three oil grooves are located on the end faces of the rollers (3).
3. The roll center hole oil groove machining method according to claim 1, characterized by comprising the following specific steps:
s1, horizontally placing a roller (3) on a bracket (4);
s2, a spherical taper milling cutter (2) is added by a trademark engraving machine (1), and the rotation center of the cutter is aligned and superposed with the central axis of a roller (3) horizontally placed on a bracket (4);
s3, utilizing the three-axis linkage function of the trademark engraving machine (1), automatically determining a program starting point during machining according to parameters such as a spigot diameter, a bottom hole diameter and a cutter diameter after inputting machining parameters of an oil groove part in a module interface and selecting a machining angle, and uniformly dividing three oil grooves in the direction of 360 degrees of the circumference and calculating the machining depth;
s4, performing equipartition rotation on each line according to the machining depth by 120 degrees in real time, and performing real-time transformation in the vertical and left-right directions on a corresponding plane according to the feeding depth, namely, the coordinate value in the vertical direction is a reference circle R x sin (theta) of the current diameter, and the coordinate value in the vertical direction is a reference circle R x cos (theta) of the current diameter, so that the circumferential rotation is performed on the corresponding plane while feeding in the depth direction, and the spiral machining effect is achieved on the whole conical surface;
and S5, after the first line is machined, the machining process is returned to a safe position, the second line is milled from the starting point of the second line, and finally, the third line is machined to finish the machining of the 3 curve-shaped oil grooves (5).
4. The method for machining the oil groove in the central hole of the roller as claimed in claim 3, wherein the method comprises the following steps: the spherical taper milling cutter (2) comprises a cylindrical clamping handle, a conical transition part and a spherical cutting edge.
5. The roll center hole oil groove machining method according to claim 4, characterized in that: the spherical cutting edge is in an R2 spherical design and has a helix angle of 55 degrees.
6. The roll center hole oil groove machining method according to claim 5, characterized in that: the specification of the clamping handles is 6mm wide, the length of a conical transition part between a spherical cutting edge of Rou 2 and 6mm clamping handles is 85mm, and the conicity is 30 degrees.
CN202211664329.9A 2022-12-23 2022-12-23 Roller center hole oil groove processing method Active CN115971545B (en)

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Application Number Priority Date Filing Date Title
CN202211664329.9A CN115971545B (en) 2022-12-23 2022-12-23 Roller center hole oil groove processing method

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Application Number Priority Date Filing Date Title
CN202211664329.9A CN115971545B (en) 2022-12-23 2022-12-23 Roller center hole oil groove processing method

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CN115971545B CN115971545B (en) 2024-10-29

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742815A (en) * 1969-10-18 1973-07-03 I Sukhov Method of machining grooves in rolls of hot pilger mills
SU1227375A1 (en) * 1984-05-21 1986-04-30 Всесоюзный Научно-Исследовательский Конструкторско-Технологический Институт Подшипниковой Промышленности Method and apparatus for working the helical groove of roll for cross-wedge rolling of work
CN2284663Y (en) * 1997-05-19 1998-06-24 唐山市自动焊接设备有限公司 Machine tool for grooving two ends of shaft
CN1389322A (en) * 2001-06-01 2003-01-08 万向钱潮股份有限公司 Cross shaft face sump cutter
CN102107363A (en) * 2009-12-25 2011-06-29 浙江艾默樱零部件有限公司 Automatic indexing circular milling flute fixture
CN102773537A (en) * 2012-07-31 2012-11-14 重庆歇马机械曲轴有限公司 Crank shaft crank lever keyway processing device and processing method
CN102814540A (en) * 2011-06-08 2012-12-12 马永 Pneumatic machine tool mechanism for milling oil grooves on universal joint
CN211218849U (en) * 2019-07-19 2020-08-11 江苏华兴通讯科技有限公司 Automatic groove milling equipment of biax
CN214817086U (en) * 2021-02-03 2021-11-23 江西同欣机械制造股份有限公司 Indexing oil groove milling clamp

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742815A (en) * 1969-10-18 1973-07-03 I Sukhov Method of machining grooves in rolls of hot pilger mills
SU1227375A1 (en) * 1984-05-21 1986-04-30 Всесоюзный Научно-Исследовательский Конструкторско-Технологический Институт Подшипниковой Промышленности Method and apparatus for working the helical groove of roll for cross-wedge rolling of work
CN2284663Y (en) * 1997-05-19 1998-06-24 唐山市自动焊接设备有限公司 Machine tool for grooving two ends of shaft
CN1389322A (en) * 2001-06-01 2003-01-08 万向钱潮股份有限公司 Cross shaft face sump cutter
CN102107363A (en) * 2009-12-25 2011-06-29 浙江艾默樱零部件有限公司 Automatic indexing circular milling flute fixture
CN102814540A (en) * 2011-06-08 2012-12-12 马永 Pneumatic machine tool mechanism for milling oil grooves on universal joint
CN102773537A (en) * 2012-07-31 2012-11-14 重庆歇马机械曲轴有限公司 Crank shaft crank lever keyway processing device and processing method
CN211218849U (en) * 2019-07-19 2020-08-11 江苏华兴通讯科技有限公司 Automatic groove milling equipment of biax
CN214817086U (en) * 2021-02-03 2021-11-23 江西同欣机械制造股份有限公司 Indexing oil groove milling clamp

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