CN112518258A - Preparation process of outer table and application of outer table - Google Patents

Preparation process of outer table and application of outer table Download PDF

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Publication number
CN112518258A
CN112518258A CN202011454290.9A CN202011454290A CN112518258A CN 112518258 A CN112518258 A CN 112518258A CN 202011454290 A CN202011454290 A CN 202011454290A CN 112518258 A CN112518258 A CN 112518258A
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CN
China
Prior art keywords
grinding
ball table
taper
ball
outer diameter
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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.)
Pending
Application number
CN202011454290.9A
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Chinese (zh)
Inventor
严惠明
罗廷银
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Hangzhou Mingren Machinery Co ltd
Original Assignee
Hangzhou Mingren Machinery Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hangzhou Mingren Machinery Co ltd filed Critical Hangzhou Mingren Machinery Co ltd
Priority to CN202011454290.9A priority Critical patent/CN112518258A/en
Publication of CN112518258A publication Critical patent/CN112518258A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/02Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring length, width, or thickness
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/10Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring diameters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/22Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring angles or tapers; for testing the alignment of axes

Abstract

The invention discloses a preparation process of an outer table and application of the outer table, relating to the technical field of universal joints; the preparation process comprises the following steps: cold extruding blank, turning, heat treatment, grinding, light channeling treatment, flaw detection, cleaning and packaging. In the invention, because the inventor adopts a special detection method, the taper of the inner hole of the outer ball table can be accurately measured, so that the taper of the inner hole of the outer ball table can be accurately controlled, and the detection method has the characteristics of simple operation, high precision, low use cost and the like; in addition, the outer ball table with certain inner hole taper obtained by the preparation process can be matched with the inner ball table for use, the ball table assembly used in a matched mode is very flexible in service performance after being assembled with the ball cage, and the traditional direct sliding friction type contact of the single inner ball table and the ball cage slideway is replaced.

Description

Preparation process of outer table and application of outer table
Technical Field
The invention relates to the technical field of universal joints, in particular to a preparation process of an outer table and application of the outer table.
Background
A universal joint is a mechanism that connects two shafts, whose axes do not coincide, and causes the two shafts to transmit motion at the same angular velocity. The position of the force transmission point is always on the bisection plane of the included angle of the two shafts, so that the constant-speed motion is ensured. The transmission is an important part in an automobile transmission system, and has the functions of transmitting the power of an engine from a transmission to the driving wheels of an automobile, meeting the requirement of the outer end corner of an automobile transmission shaft, stably and reliably transmitting the power of the engine to wheels, compensating the bounce of a suspension at the inner end of the automobile and driving the automobile to run at a high speed.
The constant velocity universal joint used for the automobile has a plurality of types, wherein the universal joint is a three-fork constant velocity universal joint which is of a differential end sliding type, can axially slide and stretch and can compensate the change of the axial length. Because the constant velocity universal joint transmits heavy-load driving torque, has high transmission precision and large demand and is a safety part, the main parts of the constant velocity universal joint are processed by adopting a precision forging part. The common three-fork constant velocity universal joint adopts an inner ball table, and the structure has large frictional resistance when in use.
The invention aims to provide a preparation process and a detection method of an outer ball table. In addition, the outer ball table and the inner ball table are matched for use, and the traditional direct sliding friction type contact between a single inner ball table and a ball cage slideway is replaced, so that the movement energy consumption generated by starting friction resistance can be reduced, and the driving comfort is improved.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present invention provides a manufacturing process of an outer ball table, including: cold extruding blank, turning, heat treatment, grinding, light channeling treatment, flaw detection, cleaning and packaging.
As a preferred technical scheme, the cold extrusion blank comprises blanking, annealing, sand blasting, phosphorus saponification, forming and burr removing.
As a preferred technical scheme, the turning comprises outer diameter eccentric turning and inner hole taper turning.
As a preferable technical scheme, the grinding comprises plane grinding, outer diameter eccentric grinding and inner hole taper grinding.
As a preferred technical solution, the step of the outer diameter eccentric grinding comprises: and during the outer diameter eccentric grinding, the grinding wheel is adjusted to be eccentric, the eccentricity is determined by the difference value between the workpiece and the standard part after the initial grinding, and the outer diameter eccentric grinding can be carried out after the eccentricity is determined.
As a preferable technical scheme, the outer diameter eccentric grinding further comprises an outer diameter detection process of the outer ball table.
As a preferred technical scheme, the inner bore taper grinding processing further comprises inner bore taper detection.
As a preferred technical scheme, the detection of the taper of the inner hole comprises the following specific steps:
s1, adjusting the grinding wheel spindle to enable the outer ball table to be perpendicular to the outer diameter of the grinding wheel;
s2, placing a small rigid ball at the bottom of the inner hole taper of the outer ball table;
s3, placing a large steel ball on the upper part of the internal control taper of the outer ball table;
and S4, setting a calculation formula on a computer, and calculating the conicity value by using the computer.
As a preferable technical scheme, the diameter difference value of the large steel ball and the small steel ball is more than or equal to 1 mm.
The invention provides an application of the outer billiard table in a second aspect, and the outer billiard table can be applied to a universal joint of an automobile.
Advantageous effects
In the invention, because the inventor adopts a special detection method, the taper of the inner hole of the outer ball table can be accurately measured, so that the taper of the inner hole of the outer ball table can be accurately controlled, and the detection method has the characteristics of simple operation, high precision, low use cost and the like; in addition, the outer ball table with certain inner hole taper obtained by the preparation process can be matched with the inner ball table for use, the ball table assembly used in a matched mode is very flexible in service performance after being assembled with the ball cage, and the traditional direct sliding friction type contact of the single inner ball table and the ball cage slideway is replaced. The automobile starting friction resistance is reduced, and the automobile energy-saving emission-reducing system has certain effects on energy conservation and emission reduction of the automobile.
Drawings
FIG. 1 is a schematic diagram of the measurement when large and small steel balls are placed in the outer ball table taper hole.
Detailed Description
The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
In order to solve the above problems, a first aspect of the present invention provides a manufacturing process of an outer ball table, including: cold extruding blank, turning, heat treatment, grinding, light channeling treatment, flaw detection, cleaning and packaging.
In some preferred embodiments, the cold extruded blank comprises blanking, annealing, sand blasting, phosphidosaponification, forming, and deburring.
In some preferred embodiments, the turning comprises outer diameter eccentric turning and inner bore tapered turning.
In some preferred embodiments, the grinding process includes a plane grinding process, an outer diameter eccentric grinding process, and an inner bore taper grinding process.
In some preferred embodiments, the step of outer diameter eccentric grinding comprises: and during the outer diameter eccentric grinding, the grinding wheel is adjusted to be eccentric, the eccentricity is determined by the difference value between the workpiece and the standard part after the initial grinding, and the outer diameter eccentric grinding can be carried out after the eccentricity is determined.
In some preferred embodiments, the outer diameter eccentric grinding process further comprises an outer table outer diameter detection process.
In some preferred embodiments, the bore taper milling further comprises bore taper detection.
In some preferred embodiments, the detecting the bore taper comprises the following specific steps:
s1, adjusting the grinding wheel spindle to enable the outer ball table to be perpendicular to the outer diameter of the grinding wheel;
s2, placing a small rigid ball at the bottom of the inner hole taper of the outer ball table;
s3, placing a large steel ball on the upper part of the internal control taper of the outer ball table;
and S4, setting a calculation formula on a computer, and calculating the conicity value by using the computer.
In some preferred embodiments, the difference between the diameters of the large steel ball and the small steel ball is larger than or equal to 1 mm.
In some preferred embodiments, the preparation process of the outer table specifically comprises the following steps:
1. cold extruding a blank: the method comprises the steps of shearing raw materials into material sections, then carrying out annealing treatment, wherein the annealing process comprises the steps of heating the material sections to 860 +/-10 ℃, preserving heat for 4-6 hours, cooling to 400-600 ℃, discharging, cooling to room temperature, carrying out sand blasting, phosphorization and saponification treatment to obtain formed material sections, and removing burrs.
2. Turning: and (3) roughly turning the workpiece obtained in the step (1) according to drawing requirements, wherein the turning comprises outer diameter eccentric turning and inner hole taper turning.
3. And (3) heat treatment: heating the workpiece obtained in the step 2 to 825-.
4. Grinding: carrying out plane grinding on the workpiece obtained in the step (3), then carrying out eccentric grinding on the outer diameter of the workpiece, and finally carrying out inner hole taper grinding;
the outer diameter eccentric grinding processing method specifically comprises the following steps: the grinding wheel is adjusted to be eccentric during grinding, the special shaft instrument is used for comparison and measurement after the verification of the eccentric amount is performed through preliminary adjustment and preliminary grinding, the standard component is calibrated through a three-coordinate length measuring instrument, and the eccentric amount and the grinding precision of the grinding wheel of a preliminary grinding product are adjusted through data obtained through comparison and measurement of the shaft instrument.
The taper grinding processing of the inner hole comprises the following specific steps: firstly, adjusting a grinding wheel spindle to 9 degrees, correcting and adjusting to enable the grinding wheel spindle to be perpendicular to the outer diameter of the grinding wheel, then correcting the grinding wheel, performing preset primary grinding after the grinding wheel is corrected, and performing detection after the primary grinding, firstly, putting 1 small steel ball to be detected into the bottom of the taper of an inner hole, measuring the height of the small steel ball by using a sensor measuring pin, recording by a computer, then putting a 2 nd large steel ball to be detected into the upper part of the taper of the inner hole, measuring the height of the large steel ball by using the sensor measuring pin, recording by the computer, and calculating the taper value and the position size of the large steel ball by. And if the size has deviation, adjusting the angle of the grinding wheel spindle of the grinding machine, and performing the operation again until the product meets the requirements. The calculation formula is as follows:
wherein, R, r- -is the radius of the big and small rigid balls respectively;
h. h, the distances between the big and small steel balls according to the hole edges are shown in the figure 1 in detail;
wherein the taper angle is 2 α.
5. Carrying out fleeing light treatment, flaw detection inspection, cleaning and packaging: and (4) performing burr removal and finishing treatment on the surface of the workpiece after the step (4), then checking whether the workpiece has crack defects, removing unqualified workpieces, and cleaning and packaging the rest workpieces.
The invention provides an application of the outer billiard table in a second aspect, and the outer billiard table can be applied to a universal joint of an automobile.
Examples
The technical solution of the present invention is described in detail by the following examples, but the scope of the present invention is not limited to the examples. Unless otherwise specified, all the raw materials in the present invention are commercially available.
Example 1
Example 1 provides a process for preparing an outer ball table,
the preparation process of the outer table comprises the following steps:
1. cold extruding a blank: shearing the raw material into sections, then carrying out annealing treatment, wherein the annealing process comprises the steps of heating the sections to 860 ℃, preserving heat for 5 hours, cooling to 400 ℃, discharging, cooling to room temperature, then carrying out sand blasting, phosphorization and saponification treatment to obtain formed sections, and removing burrs.
2. Turning: and (3) roughly turning the workpiece obtained in the step (1) according to drawing requirements, wherein the turning comprises outer diameter eccentric turning and inner hole taper turning.
3. And (3) heat treatment: and (3) heating the workpiece obtained in the step (2) to 835 ℃, preserving heat for 40min, quenching the workpiece into an oil solution with the temperature of 70 ℃ for 30min, tempering the workpiece to 170 ℃, preserving heat for 40min, and cooling the workpiece to room temperature.
4. Grinding: carrying out plane grinding on the workpiece obtained in the step (3), then carrying out eccentric grinding on the outer diameter of the workpiece, and finally carrying out inner hole taper grinding;
the outer diameter eccentric grinding processing method specifically comprises the following steps: the grinding wheel is adjusted to be eccentric during grinding, the special shaft instrument is used for comparison and measurement after the verification of the eccentric amount is performed through preliminary adjustment and preliminary grinding, the standard component is calibrated through a three-coordinate length measuring instrument, and the eccentric amount and the grinding precision of the grinding wheel of a preliminary grinding product are adjusted through data obtained through comparison and measurement of the shaft instrument.
The taper grinding processing of the inner hole comprises the following specific steps: firstly, adjusting a grinding wheel spindle to 9 degrees, correcting and adjusting to enable the grinding wheel spindle to be perpendicular to the outer diameter of the grinding wheel, then correcting the grinding wheel, performing preset primary grinding after the grinding wheel is corrected, and performing detection after the primary grinding, firstly, putting 1 small steel ball to be detected into the bottom of the taper of an inner hole, measuring the height of the small steel ball by using a sensor measuring pin, recording by a computer, then putting a 2 nd large steel ball to be detected into the upper part of the taper of the inner hole, measuring the height of the large steel ball by using the sensor measuring pin, recording by the computer, and calculating the taper value and the position size of the large steel ball by. And if the size has deviation, adjusting the angle of the grinding wheel spindle of the grinding machine, and performing the operation again until the product meets the requirements. The calculation formula is as follows:
wherein, R, r- -is the radius of the big and small rigid balls respectively;
h. h, the distances between the big and small steel balls according to the hole edges are shown in the figure 1 in detail;
wherein the taper angle is 2 α.
5. Carrying out fleeing light treatment, flaw detection inspection, cleaning and packaging: and (4) performing burr removal and finishing treatment on the surface of the workpiece after the step (4), then checking whether the workpiece has crack defects, removing unqualified workpieces, and cleaning and packaging the rest workpieces.
Example 2
Embodiment 2 provides a three-pin universal joint including an outer ball table obtained by the manufacturing process described in embodiment 1, where the three-pin universal joint includes a three-pin body and three cylindrical pins, the three cylindrical pins are uniformly distributed on the outer circle side of the three-pin body at intervals of 120 °, the three cylindrical pins are all perpendicular to the center of the three-pin body and are located on the same circumferential plane, an inner ball table is nested on the cylindrical pins, a roller pin is arranged on the surface of an inner hole of the inner ball table, the roller pin is simultaneously matched with the bottom of the outer ball table, a retainer ring is arranged at one end of the outer ball table, and a snap spring is arranged at the other end of the retainer ring.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The preparation process of the outer ball table is characterized by comprising the following steps: cold extruding blank, turning, heat treatment, grinding, light channeling treatment, flaw detection, cleaning and packaging.
2. The process of claim 1, wherein the cold-extruded blank comprises blanking, annealing, sand blasting, phosphorus saponification, forming, and burr removing.
3. The manufacturing process of the outer ball table according to claim 1, wherein the turning comprises outer diameter eccentric turning and inner hole taper turning.
4. The process for preparing an outer ball table according to claim 1, wherein the grinding comprises a plane grinding, an outer diameter eccentric grinding and an inner bore taper grinding.
5. The manufacturing process of the outer ball table according to claim 4, wherein the outer diameter eccentric grinding process comprises the following steps: and during the outer diameter eccentric grinding, the grinding wheel is adjusted to be eccentric, the eccentricity is determined by the difference value between the workpiece and the standard part after the initial grinding, and the outer diameter eccentric grinding can be carried out after the eccentricity is determined.
6. The process according to claim 5, wherein the outer diameter eccentric grinding process further comprises an outer diameter detection process of the outer ball table.
7. The process of claim 4, wherein the bore taper milling further comprises bore taper detection.
8. The preparation process of the outer ball table according to claim 1, wherein the detection of the taper of the inner hole comprises the following specific steps:
s1, adjusting the grinding wheel spindle to enable the outer ball table to be perpendicular to the outer diameter of the grinding wheel;
s2, placing a small rigid ball at the bottom of the inner hole taper of the outer ball table;
s3, placing a large steel ball on the upper part of the internal control taper of the outer ball table;
and S4, setting a calculation formula on a computer, and calculating the conicity value by using the computer.
9. The preparation process of the outer ball table as claimed in claim 8, wherein the difference between the diameters of the large steel ball and the small steel ball is not less than 1 mm.
10. Use of an outer cue ball obtained by a process for the manufacture of an outer cue ball table according to any one of claims 1 to 9 in an automotive universal joint.
CN202011454290.9A 2020-12-10 2020-12-10 Preparation process of outer table and application of outer table Pending CN112518258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011454290.9A CN112518258A (en) 2020-12-10 2020-12-10 Preparation process of outer table and application of outer table

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Application Number Priority Date Filing Date Title
CN202011454290.9A CN112518258A (en) 2020-12-10 2020-12-10 Preparation process of outer table and application of outer table

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310310A (en) * 2010-07-08 2012-01-11 襄阳汽车轴承股份有限公司 Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings
CN102601733A (en) * 2012-03-28 2012-07-25 南车戚墅堰机车车辆工艺研究所有限公司 Online conical hole grinding, machining and measuring method for workpieces with large conical holes
CN105840659A (en) * 2016-05-24 2016-08-10 武汉理工大学 Bearing ball machining method
CN108284304A (en) * 2017-12-27 2018-07-17 杭州新世纪万向节有限公司 Universal-joint cross trunnion blank cold-extruded processing technology
CN109352288A (en) * 2018-12-11 2019-02-19 岑重英 A kind of automobile gimbal fork single piece cold extrusion compression moulding technique
CN110877237A (en) * 2019-12-10 2020-03-13 辽宁科技大学 Compensation method based on eccentricity of rotation center of main shaft of grinding machine and rotation center of workpiece

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102310310A (en) * 2010-07-08 2012-01-11 襄阳汽车轴承股份有限公司 Composite machining process for inner and outer rings of narrow-series thin-walled high-precision conical thin-walled bearings
CN102601733A (en) * 2012-03-28 2012-07-25 南车戚墅堰机车车辆工艺研究所有限公司 Online conical hole grinding, machining and measuring method for workpieces with large conical holes
CN105840659A (en) * 2016-05-24 2016-08-10 武汉理工大学 Bearing ball machining method
CN108284304A (en) * 2017-12-27 2018-07-17 杭州新世纪万向节有限公司 Universal-joint cross trunnion blank cold-extruded processing technology
CN109352288A (en) * 2018-12-11 2019-02-19 岑重英 A kind of automobile gimbal fork single piece cold extrusion compression moulding technique
CN110877237A (en) * 2019-12-10 2020-03-13 辽宁科技大学 Compensation method based on eccentricity of rotation center of main shaft of grinding machine and rotation center of workpiece

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