CN111879271A - Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars - Google Patents

Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars Download PDF

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Publication number
CN111879271A
CN111879271A CN202010550312.5A CN202010550312A CN111879271A CN 111879271 A CN111879271 A CN 111879271A CN 202010550312 A CN202010550312 A CN 202010550312A CN 111879271 A CN111879271 A CN 111879271A
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CN
China
Prior art keywords
sleeve
male die
face
tile
value
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
Application number
CN202010550312.5A
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Chinese (zh)
Inventor
游国祥
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Automotive Wheel Suizhou Co ltd
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Dongfeng Automotive Wheel Suizhou Co ltd
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Publication date
Application filed by Dongfeng Automotive Wheel Suizhou Co ltd filed Critical Dongfeng Automotive Wheel Suizhou Co ltd
Priority to CN202010550312.5A priority Critical patent/CN111879271A/en
Publication of CN111879271A publication Critical patent/CN111879271A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
    • G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
    • G01B21/047—Accessories, e.g. for positioning, for tool-setting, for measuring probes

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)

Abstract

The invention provides a method for keeping the size consistency of bolt holes of a nut seat of a steel wheel of a passenger car, which can effectively ensure the size consistency of conical surfaces or spherical surfaces of the bolt holes and improve the production quality of the wheel, and the technical scheme of the invention is that the method comprises the following steps: s1, selecting the surface of each punching die with the same diameter at the same position of the conical surface or spherical surface of the male die; s2, measuring height values H1, H2. cndot. Hn from the surface of the selected diameter on each male die to the mounting and fixing surface of the male die, wherein n is a natural number; s3, taking the minimum value of H1 and H2. cndot. Hn, taking the punch corresponding to the minimum value as a reference punch, and calculating to obtain a difference value delta H between other height values and the minimum value; and S4, grinding the mounting and fixing surfaces of the punches other than the reference punch by a grinding process, wherein the grinding height value is a corresponding delta H value.

Description

Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars
Technical Field
The invention relates to the technical field of automobile part processing, in particular to a method for keeping the size consistency of bolt holes of nut seats of steel wheels of passenger cars.
Background
The wheel nut seat is an important part of the wheel. The screw nut seat has several screw holes, and during the punching of steel wheel, the size consistency of the screw nut seat has great influence on the performance of the wheel (the contact surface of the screw holes of the wheel nut seat is divided into two types, i.e. conical surface and spherical surface). 1. The size of the conical surface or the spherical surface is different, so that the joint state and the joint depth of each bolt are influenced. Especially with small trim covers, this can lead to a broken trim cover. 2. Affecting the degree of location of several holes, resulting in false wheel runout detection and dynamic balance detection. 3. The atress of influence bolt hole, the yield strength that every hole can bear differs, and the difference is great, can not effective control.
The existing wheel standard has strict requirements on the jumping and dynamic balance of the wheel, the strength and the position degree of the nut seat, and the dimensional tolerance of the opening part is specified in the requirements of a host factory.
The consistency (variation) of the prior art to the conical surface (spherical surface) of the bolt hole is fuzzy, the prior art has clear requirements on the conical angle of the bolt hole, but the diameter of the opening part has only lower limit requirements (>17,5), and the problem that the sizes of the punched nut seats are inconsistent occurs.
In the prior art, the height of the conical surface of the bolt hole is difficult to accurately measure, only the height can be roughly measured by a caliper, the problem is also brought to punch processing, repeated debugging and repeated repair are carried out, and the size cannot be accurately determined when male die spare parts are replaced in production.
These aspects all relate to the consistency of the size of the nut seat. It is particularly important how to control the uniformity of the size of the nut seat.
When the problem of size consistency of nut seats is solved in the past, a plurality of nut seats are usually manufactured at one time through numerical control machining. The repair quantity is not easy to detect after the wear and tear, and the spare parts can only be replaced once. The processing cycle is long, the cost is high, and spare parts are not easy to manage.
Disclosure of Invention
The invention provides a method for detecting and processing the size consistency of bolt holes of a nut seat of a steel wheel of a passenger car, which can effectively ensure the size consistency of conical surfaces or spherical surfaces of the bolt holes and improve the production quality of wheels.
The technical scheme of the invention is that the method comprises the following steps: s1, selecting the surface of each punching die with the same diameter at the same position of the conical surface or spherical surface of the male die;
s2, measuring height values H1, H2. cndot. Hn from the surface of the selected diameter on each male die to the mounting and fixing surface of the male die, wherein n is a natural number;
s3, taking the minimum value of H1 and H2. cndot. Hn, taking the punch corresponding to the minimum value as a reference punch, and calculating to obtain a difference value delta H between other height values and the minimum value;
and S4, grinding the mounting and fixing surfaces of the punches other than the reference punch by a grinding process, wherein the grinding height value is a corresponding delta H value.
Preferably, in step S1, the method for selecting the surface having the same diameter as the conical surface or spherical surface of the punch includes: and a first sleeve is arranged below the male die, the conical surface or the spherical surface of the male die is arranged on the upper port of the first sleeve, and the plane where the upper end surface of the first sleeve is located is the plane where the diameter is located.
Preferably, the upper end surface and the lower end surface of the first sleeve are perpendicular to the central axis of the first sleeve, and the lower end surface of the first sleeve is placed on the working table.
As a preferable mode of the above, in step S2, the method of measuring the height value includes: the second sleeve is sleeved outside the section of the male die cylinder, the inner side face of the second sleeve is a cylindrical face and can be attached to the section of the male die cylinder, and the lower end face of the second sleeve is placed on the working table.
Preferably, the second sleeve is composed of a plurality of tile-shaped structures and a strapping tape, the inner side surfaces of the tile-shaped structures are cylindrical surfaces, the upper portion and the lower portion of the outer side surfaces are provided with clamping grooves along the circumferential direction, the plurality of tile-shaped structures surround the cylindrical section capable of wrapping the male die, and the strapping tape is arranged in the clamping grooves outside the second sleeve and used for strapping and fixing the plurality of tile-shaped structures outside the male die.
Preferably, the lower end faces of the tile-shaped structures of the second sleeve are flush and located on the same working table, and the upper end face and the lower end face of the second sleeve are perpendicular to the central axis of the second sleeve.
The invention has the beneficial effects that: the device in the technical scheme is simple in structure, the method is convenient to operate, the size of the male die of each stamping die can be rapidly and effectively detected, the size deviation value is eliminated by adopting a corresponding process, the product quality of the pressed nut seat is effectively improved, and the driving safety of the wheel is ensured.
Drawings
Fig. 1 is a partial structural schematic view of a nut seat on a wheel spoke according to the invention.
FIG. 2 is a schematic view of the assembly of the present invention using a first and second sleeve for measuring the male die of the die.
Fig. 3 is a schematic top view of the second sleeve of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings.
First, the structure of the inspection tool used in this embodiment will be described.
The detection tool comprises a first sleeve 4 and a second sleeve 5, wherein the first sleeve 4 is of an integrated structure, the upper end surface and the lower end surface of the integrated structure are perpendicular to the central axis of the first sleeve 4, the inner edge of the upper port of the first sleeve 4 is of a right-angle structure, and chamfering is not performed.
The second sleeve 5 is composed of a plurality of tile-shaped structures (three tile-shaped structures in this embodiment) 52 and a strapping tape 51, wherein the inner side surfaces of the tile-shaped structures 52 are cylindrical surfaces, the upper part and the lower part of the outer side surfaces are respectively provided with a clamping groove along the circumferential direction, the tile-shaped structures 52 surround a cylindrical section capable of wrapping the male die, the strapping tape 51 is arranged in the clamping groove outside the second sleeve 5 and used for strapping and fixing the tile-shaped structures 52 outside the male die, and when the second sleeve 5 is installed, the lower end surfaces of the tile-shaped structures 52 are flush.
As shown in fig. 1, in the present embodiment, a spoke with 5 bolt holes is taken as an example, and the method for detecting and processing the size consistency of the bolt holes 2 of the nut seat 1 comprises the following steps:
s1, selecting the surface 311 with the same diameter at the same position of the conical surface 31 (or spherical surface) of the punch 3 of each punching die;
s2, measuring height values H1, H2, H3, H4 and H5 from the surface 311 with the selected diameter on each punch 3 to the punch mounting and fixing surface 32;
s3, taking the minimum value of H1, H2, H3, H4 and H5, taking the punch corresponding to the minimum value as a reference punch, and calculating to obtain a difference value delta H between other height values and the minimum value;
and S4, grinding the mounting and fixing surfaces of the punches other than the reference punch by a grinding process, wherein the grinding height value is a corresponding delta H value.
In step S1, the method for selecting the surface 311 with the same diameter as the conical surface or spherical surface of the male die includes: the first sleeve 4 is placed below the male die, the conical surface or the spherical surface of the male die is placed on the upper end port of the first sleeve 4, the plane where the upper end surface of the first sleeve 4 is located is the diameter located surface 311, and the lower end surface of the first sleeve 4 is placed on the working table.
In step S2, the method of measuring the height value is: the second sleeve 5 is sleeved outside the section of the male die cylinder, the inner side face of the second sleeve 5 is a cylindrical face and can be attached to the section of the male die cylinder, and the lower end face of the second sleeve 5 is placed on the working table. The lower end faces of the tile-shaped structures 52 of the second sleeve 5 are flush and are located on the same working table, and the upper end face and the lower end face of the second sleeve 5 are perpendicular to the central axis of the second sleeve 5.
The core of the technical scheme in the embodiment is that the problem of the size consistency of the effective part of the punch for pressing the nut seat is conveniently and quickly solved, so that the consistency of the conical surface or the spherical surface of the bolt hole is ensured. Therefore, the determination of the height H in the above-mentioned embodiment is the key to the present embodiment. In order to achieve the aim, a set of detection tool is provided in the technical scheme. Two sleeve members are divided, and the center of each sleeve member is perpendicular to the end face. The first sleeve 4 supports the conical surface or spherical surface on the male die of the die, the second sleeve 5 tightly clamps the cylindrical section fixing surface of the male die (preventing the male die from being inclined, breaking the sleeve into three or more parts, and locking the male die by a binding tape 51 after fixing), and the height dimension H is easily and accurately measured by a height gauge or a three-coordinate device.
According to the scheme, the problem that the sizes of the conical surfaces or the spherical surfaces of the male dies of the stamping bolt holes are inconsistent is solved to a certain extent, so that the sizes of the bolt holes of the nut seats of the steel wheels of the passenger cars can effectively keep consistent, and the production quality of the wheels is improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A method for keeping the sizes of bolt holes of a nut seat of a steel wheel of a passenger car consistent is characterized by comprising the following steps:
s1, selecting the surface of each punching die with the same diameter at the same position of the conical surface or spherical surface of the male die;
s2, measuring the height value H from the surface of the selected diameter on each punch to the punch mounting and fixing surface1、H2···HnN is a natural number;
s3, taking H1、H2···HnThe terrace die corresponding to the minimum value is a reference terrace die, and the difference value delta H between other height values and the minimum value is calculated;
and S4, grinding the mounting and fixing surfaces of the punches other than the reference punch by a grinding process, wherein the grinding height value is a corresponding delta H value.
2. The method of claim 1, wherein: in step S1, the method for selecting the surface of the same position of the conical surface or spherical surface of the male die with the same diameter is as follows:
and a first sleeve is arranged below the male die, the conical surface or the spherical surface of the male die is arranged on the upper port of the first sleeve, and the plane where the upper end surface of the first sleeve is located is the plane where the diameter is located.
3. The method of claim 2, wherein: the upper end face and the lower end face of the first sleeve are perpendicular to the central shaft of the first sleeve, and the lower end face of the first sleeve is placed on the working table.
4. The method of claim 3, wherein: in step S2, the method of measuring the height value is:
the second sleeve is sleeved outside the section of the male die cylinder, the inner side face of the second sleeve is a cylindrical face and can be attached to the section of the male die cylinder, and the lower end face of the second sleeve is placed on the working table.
5. The method of claim 4, wherein: the second sleeve is composed of a plurality of tile-shaped structures and strapping tapes, the inner side faces of the tile-shaped structures are cylindrical surfaces, clamping grooves along the circumferential direction are formed in the upper portion and the lower portion of the outer side faces, the tile-shaped structures surround the cylindrical section capable of wrapping the male die, and the strapping tapes are arranged in the clamping grooves in the outer portion of the second sleeve and used for strapping and fixing the tile-shaped structures outside the male die.
6. The method of claim 5, wherein: the lower end faces of the tile-shaped structures of the second sleeve are parallel and level and are positioned on the same working table, and the upper end face and the lower end face of the second sleeve are perpendicular to the central shaft of the second sleeve.
CN202010550312.5A 2020-06-16 2020-06-16 Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars Pending CN111879271A (en)

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CN202010550312.5A CN111879271A (en) 2020-06-16 2020-06-16 Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars

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CN202010550312.5A CN111879271A (en) 2020-06-16 2020-06-16 Method for keeping consistency of sizes of bolt holes of nut seats of steel wheels of passenger cars

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261883A (en) * 2010-05-28 2011-11-30 中国航空工业标准件制造有限责任公司 Detecting tool for measuring distance between two parallel surfaces
RU2460035C1 (en) * 2011-05-31 2012-08-27 Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" Apparatus for measuring deviation of planes from centre of outer spherical surface
CN202582445U (en) * 2011-12-30 2012-12-05 众泰控股集团有限公司 Measuring tool applied to gearbox assembly
CN102878967A (en) * 2012-07-27 2013-01-16 中国航空工业集团公司北京航空精密机械研究所 Method for accurately measuring sphere diameter dimension of incomplete concave spherical surface
CN105423877A (en) * 2015-12-15 2016-03-23 营口镁质材料研究院有限公司 Concentricity detection method for ceramic mold

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102261883A (en) * 2010-05-28 2011-11-30 中国航空工业标准件制造有限责任公司 Detecting tool for measuring distance between two parallel surfaces
RU2460035C1 (en) * 2011-05-31 2012-08-27 Государственное образовательное учреждение высшего профессионального образования "Тверской государственный технический университет" Apparatus for measuring deviation of planes from centre of outer spherical surface
CN202582445U (en) * 2011-12-30 2012-12-05 众泰控股集团有限公司 Measuring tool applied to gearbox assembly
CN102878967A (en) * 2012-07-27 2013-01-16 中国航空工业集团公司北京航空精密机械研究所 Method for accurately measuring sphere diameter dimension of incomplete concave spherical surface
CN105423877A (en) * 2015-12-15 2016-03-23 营口镁质材料研究院有限公司 Concentricity detection method for ceramic mold

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Application publication date: 20201103