CN114001615B - Rapid detection device and detection method for automobile differential mechanism shell - Google Patents
Rapid detection device and detection method for automobile differential mechanism shell Download PDFInfo
- Publication number
- CN114001615B CN114001615B CN202111327542.6A CN202111327542A CN114001615B CN 114001615 B CN114001615 B CN 114001615B CN 202111327542 A CN202111327542 A CN 202111327542A CN 114001615 B CN114001615 B CN 114001615B
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- detection
- dial indicator
- ball head
- differential case
- ring
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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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
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a rapid detection device and a detection method for an automobile differential case, wherein the rapid detection device comprises a detection tool with a ball head positioning pin, a rotating shaft and a detection ring and a calibration detection block; ball head positioning pins are uniformly distributed on the detection ring; the dial indicator fixing frame is arranged above the ball head locating pin, and the dial indicator is arranged on the rotating shaft arranged in the middle of the detection ring. The step of detecting the automobile differential case by using the device comprises the following steps: (1) Adjusting the detection zero position of each dial indicator by using a calibration detection block; (2) Placing 4 ball head positioning pins of the gauge into a cross shaft groove of the differential case to finish automatic centering of the gauge; (3) The dial indicator on the rotary shaft moves on the spherical surface on the inner side of the differential case; (4) And acquiring the difference between the reading change of the dial indicator on the ball head locating pin and the rotary shaft and the zero position, namely detecting the change data of the position of the cross shaft groove and the position of the spherical surface. The invention can solve the problems of quick detection of the end face, the center of the cross shaft hole, the center of the spherical surface and the like of the differential mechanism shell.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a device and a method for rapidly detecting an automobile differential case.
Background
The automobile differential mechanism makes the main part of the driving axle, and has the functions of transmitting power to the two half shafts, allowing the two half shafts to rotate at different rotation speeds, meeting the requirement that the wheels at two sides do not equidistant running in a pure rolling mode as far as possible, and reducing the friction between the tires and the ground.
The track of the wheels is an arc when the automobile turns, if the automobile turns leftwards, the center point of the arc is on the left side, the arc of the right side wheels is longer than that of the left side wheels in the same time, the left side wheels are slower, the right side wheels are faster, and the difference in short distance is made up by different rotating speeds in order to balance the difference.
In short, the differential mechanism has the function of enabling the tires to rotate at different rotation speeds when the vehicle turns, and eliminating the wheel slip caused by various factors so as to keep consistency and smoothly turn.
On the differential case, the position of the cross shaft is mainly that a fixed planetary gear is concentric with the axle center of the differential case, and the upper spherical surface of the differential is that the space positions of the fixed planetary gear and the half shaft gear;
if the center position and the end surface position of the cross shaft deviate to the outer side of the end surface, the meshing gap between the planetary gear and the half shaft gear is bigger, and the problem of abnormal sound is generated;
if the center position and the end face position of the cross shaft deviate to the inner side of the end face, the meshing clearance between the planetary gear and the side gear is smaller, and the problem of locking possibly occurs;
if the center position of the spherical surface and the end surface position are offset towards the inner side relatively, the meshing gap between the planetary gear and the half shaft gear is larger, and the problem of abnormal sound can be generated;
if the center position of the spherical surface and the end surface position are offset outwards relatively, the meshing clearance between the planetary gear and the side gear is small, and the problem of locking can be generated;
in theory, the center of the cross shaft hole, the center of the end face and the center of the spherical surface of the differential case should be positioned at the same position; however, in actual processing, the center of the cross shaft hole, the center of the end face and the center of the spherical surface of the differential case are not at one position due to factors such as equipment, a cutter, a process method and the like; how to realize the effective detection of the end face, the center of the cross shaft hole and the center of the spherical surface of the differential case by a combined detection tool is a difficult problem in the industry.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rapid detection device and a detection method for an automobile differential case, which can rapidly realize effective detection of the end face, the center of a cross shaft hole and the center of a spherical surface of the differential case and solve the problem of rapid detection of the end face, the center of the cross shaft hole and the center of the spherical surface of the differential case.
In order to solve the problems, the technical scheme of the invention is as follows: the rapid detection device for the automobile differential case comprises a gauge and a calibration detection block for calibrating the gauge; the gauge comprises a ball head locating pin, a rotating shaft, a dial indicator and a detection ring; the detection ring is uniformly provided with a plurality of ball head positioning pins for determining the position of the cross shaft of the differential case and the center of the cross shaft hole; a dial indicator fixing frame for supporting and fixing a dial indicator is correspondingly arranged above each ball head locating pin, and one end of the dial indicator fixing frame is connected with the detection ring; each dial indicator fixing frame is provided with one dial indicator for detecting actual machining values; the rotary shaft is arranged in the middle of the inner side of the detection ring, the rotary shaft rotates around the center of the detection ring, and the dial indicator for detecting the spherical surface of the inner side of the differential case is arranged on the rotary shaft. When the dial indicator is used, the gauge head of the dial indicator fixed on the dial indicator fixing frame is abutted to the center of the top plane of the ball head locating pin, the ball head spherical surface of the ball head locating pin is abutted to the differential shell, and the ball head locating pin shaft can move up and down by a certain stroke relative to the detection ring and push the dial indicator to move.
Among the above technical schemes, the more specific scheme is: the ball diameter of the ball head positioning pin; the width dimension of the cross axle groove of the part to be detected is consistent.
The calibration detection block 1 is in a stepped shape of an inner ring with high, medium and smooth planes on the bottom surface corresponding to the detection tool, and the height difference is the theoretical difference between the sizes of the detected parts; the calibration detection block 1 is used for calibrating a front adjustment reference, namely a zero adjustment reference.
The method for rapidly detecting the automobile differential case by adopting the rapid detection device for the automobile differential case comprises the following steps:
(1) Before detection, placing the gauge on a calibration detection block, flatly attaching the bottom surface of a detection ring to the high-order top surface of the calibration detection block, flatly attaching the spherical surfaces of 4 ball head positioning pins to the middle-order top surface of the calibration detection block, rotating a rotating shaft rotating around the center of the detection ring to enable the dial indicator head on the rotating shaft to be in contact with the inner bottom surface of the calibration detection block, and then respectively adjusting 5 dial indicators to a numerical value to serve as a detection zero position of the gauge;
(2) During detection, four ball head positioning pins of the detection tool are placed into a cross shaft groove of the differential mechanism shell, and automatic centering of the detection tool is completed; simultaneously observing whether the surface of the detection ring is in contact with the end face of the differential case; observing whether the ball heads of the 4 ball head positioning pins are contacted with the bottom surface of the cross shaft groove, and adjusting the positions of the ball head positioning pins so that the end surface of the detection ring is flatly attached to the end surface of the differential shell and the ball heads of the ball head positioning pins are contacted with the bottom surface of the cross shaft groove;
3. rotating a rotating shaft rotating around the center of the detection ring, so that the dial indicator on the rotating shaft rotating around the center of the detection ring moves a certain distance on the spherical surface on the inner side of the differential case;
4. the difference between the reading change of the dial indicator on the rotary shaft rotating around the center of the detection ring and the zero position is observed respectively to judge whether the cross shaft groove of the differential case and the inner spherical surface meet the design requirement; the change conditions of the positions of the cross shaft grooves and the spherical surfaces can be obtained rapidly and clearly through the change conditions between the readings of each dial indicator and the zero position; therefore, the processing parameters are quickly adjusted, and the production efficiency and the processing quality are effectively ensured.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
in the actual production process of the differential case part, in order to ensure that the center of the cross shaft hole, the center of the end face and the center of the spherical surface of the differential case are positioned at the same position, a production enterprise can detect whether the center of the cross shaft hole, the center of the end face and the center of the spherical surface of the differential case are positioned at the same position or not when adopting various production processes, and data assurance is provided for qualified products; when the invention is used for detection, the change conditions of the position of the cross shaft groove and the position of the spherical surface can be obtained rapidly and clearly through the change conditions between the reading of the dial indicator and the zero position; therefore, the processing parameters are quickly adjusted, and the production efficiency and the processing quality are effectively ensured.
Drawings
FIG. 1 is a schematic illustration of a differential carrier structure to be tested;
FIG. 2 is a schematic diagram of the structure of the quick test device and calibration test block of the present invention;
FIG. 3 is a schematic top view of the rapid detection apparatus of the present invention;
FIG. 4 is a schematic illustration of a standard assay of the rapid assay device of the present invention;
FIG. 5 is a schematic diagram of the rapid test device of the present invention in use.
The reference numerals in the figures are: 1. calibrating the detection block; 2. Ball head locating pin; 3. A rotation shaft; 4. a dial indicator; 5. A detection ring; 6. a dial indicator fixing frame; 7. a differential case.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural diagram of a differential case 7 to be detected, and the parts to be detected and the problems are described in the background art, and are not described herein.
The rapid detection device for the automobile differential case of fig. 2, 3 and 4 comprises a detection tool and a calibration detection block 1 for calibrating the detection tool; the gauge comprises a ball head locating pin 2, a rotating shaft 3, a dial indicator 4 and a detection ring 5. The detection ring 5 is uniformly distributed with a cross shaft for determining the position of the differential case and the center of the cross shaft hole
The dial indicator comprises 4 ball head locating pins 2, wherein a dial indicator fixing frame 6 for supporting and fixing the dial indicator 4 is correspondingly arranged right above each ball head locating pin 2, and one end of the dial indicator fixing frame 6 is connected with a detection ring 5; each dial indicator fixing frame 6 is provided with a dial indicator 4 for detecting actual machining values; when in use, the dial indicator 4 fixed on the dial indicator fixing frame 6 is abutted to the center of the top plane of the ball head locating pin 2, the ball head spherical surface of the ball head locating pin 2 is abutted against the differential shell 7, and the ball head spherical diameter of the ball head locating pin 2 is consistent with the width dimension of the cross shaft groove of the part to be detected; the ball positioning pin shaft 2 can move up and down with a certain stroke relative to the detection ring 5, and meanwhile pushes the dial indicator 4 to move; the rotating shaft 3 is arranged in the middle of the ring of the detection ring 5, the rotating shaft 3 rotates around the center of the detection ring, and the rotating shaft 3 is provided with a dial indicator 4 for detecting the spherical surface on the inner side of the differential case 7; the structure of the calibration detection block 1 is made into a smooth plane inner ladder shape corresponding to the detection tool, and the height difference is the theoretical difference between the sizes of the detected parts; the calibration detection block 1 is used for calibrating a front adjustment reference, namely a zero adjustment reference.
The automobile differential case rapid detection method adopting the automobile differential case rapid detection device comprises the following steps:
1. before detection, placing the detection tool on a calibration detection block, as shown in fig. 4, flatly attaching the bottom surface of a detection ring 5 to the high-order top surface of the calibration detection block, flatly attaching the spherical surfaces of 4 ball head positioning pins to the middle-order top surface of the calibration detection block, rotating a rotating shaft rotating around the center of the detection ring to enable the dial indicator head on the rotating shaft to be in contact with the inner bottom surface of the calibration detection block, and then respectively adjusting the 5 dial indicators to a numerical value to serve as a detection zero position of the detection tool;
2. during detection, four ball head positioning pins of the detection tool are placed into a cross shaft groove of the differential case, and automatic centering of the detection tool is completed, as shown in fig. 5; simultaneously observing whether the surface of the detection ring is in contact with the end face of the differential case; observing whether the ball heads of the 4 ball head positioning pins are contacted with the bottom surface of the cross shaft groove, and adjusting the positions of the ball head positioning pins so that the end surface of the detection ring is flatly attached to the end surface of the differential shell and the ball heads of the ball head positioning pins are contacted with the bottom surface of the cross shaft groove;
3. rotating a rotating shaft rotating around the center of the detection ring, so that the dial indicator on the rotating shaft rotating around the center of the detection ring moves a certain distance on the spherical surface on the inner side of the differential case;
4. the difference between the reading change of the dial indicator on the rotary shaft rotating around the center of the detection ring and the zero position is observed respectively to judge whether the cross shaft groove of the differential case and the inner spherical surface meet the design requirement; the change conditions of the positions of the cross shaft grooves and the spherical surfaces can be obtained rapidly and clearly through the change conditions between the readings of each dial indicator and the zero position; therefore, the processing parameters are quickly adjusted, and the production efficiency and the processing quality are effectively ensured.
Claims (4)
1. The utility model provides a quick detection device of automobile differential shell which characterized in that: the device comprises a gauge and a calibration detection block for calibrating the gauge; the gauge comprises a ball head locating pin, a rotating shaft, a dial indicator and a detection ring; four ball head positioning pins are uniformly distributed on the detection ring; a dial indicator fixing frame is correspondingly arranged above each ball head locating pin, and one end of the dial indicator fixing frame is connected with the detection ring; each dial indicator fixing frame is provided with one dial indicator; the rotary shaft is arranged in the middle of the detection ring, and one dial indicator is arranged on the rotary shaft.
2. The automotive differential case rapid detection apparatus according to claim 1, wherein: the ball diameter of the ball head positioning pin is consistent with the width of the cross shaft groove of the part to be detected.
3. The automotive differential case rapid detection apparatus according to claim 1 or 2, characterized in that: the calibration detection block is in a stepped shape of an inner ring with a smooth plane of a high, medium and bottom surface corresponding to the gauge.
4. A method for rapidly detecting an automotive differential case according to any one of claims 1 to 3, characterized by comprising the steps of:
(1) Before detection, placing the detection tool on the calibration detection block, and then respectively adjusting each dial indicator to a numerical value to serve as a detection zero position of the detection tool;
(2) During detection, the four ball head positioning pins of the detection tool are placed into the cross shaft groove of the differential mechanism shell, and automatic centering of the detection tool is completed; simultaneously observing whether the surface of the detection ring is in contact with the end face of the differential case; observing whether the ball heads of the four ball head positioning pins are in contact with the bottom surface of the cross shaft groove, and adjusting the positions of the ball head positioning pins so that the end surface of the detection ring is flatly attached to the end surface of the differential shell, and the ball heads of the ball head positioning pins are in contact with the bottom surface of the cross shaft groove;
(3) Rotating the rotating shaft rotating around the center of the detecting ring, so that the dial indicator on the rotating shaft rotating around the center of the detecting ring moves a certain distance on the spherical surface inside the differential case;
(4) The difference between the reading change and zero position of the dial indicator on the four ball head locating pins and the rotating shaft rotating around the center of the detection ring is observed, so that whether the cross shaft groove of the differential case and the inner spherical surface meet the design requirement can be judged; the change data of the position of the cross shaft groove and the position of the spherical surface can be rapidly detected through the change condition between the readings of the dial indicator and the zero position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327542.6A CN114001615B (en) | 2021-11-10 | 2021-11-10 | Rapid detection device and detection method for automobile differential mechanism shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111327542.6A CN114001615B (en) | 2021-11-10 | 2021-11-10 | Rapid detection device and detection method for automobile differential mechanism shell |
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| Publication Number | Publication Date |
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| CN114001615A CN114001615A (en) | 2022-02-01 |
| CN114001615B true CN114001615B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111327542.6A Active CN114001615B (en) | 2021-11-10 | 2021-11-10 | Rapid detection device and detection method for automobile differential mechanism shell |
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| JPH0363809U (en) * | 1989-10-25 | 1991-06-21 | ||
| CN102052887A (en) * | 2010-11-04 | 2011-05-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Special detection tool for measuring inner arc radius of coupler knuckle cavity of transition coupler body |
| CN202083332U (en) * | 2011-03-17 | 2011-12-21 | 宁波永信汽车部件制造有限公司 | Ball concentricity measurement device for casing of ball pin chain |
| CN202204426U (en) * | 2011-09-09 | 2012-04-25 | 江苏飞船股份有限公司 | Measuring device for spherical surface of planetary gear |
| CN206330509U (en) * | 2016-12-30 | 2017-07-14 | 北京中科奥倍超声波技术研究院 | Spherical surface of differential mechanism casing size checking device |
| CN207894358U (en) * | 2018-02-10 | 2018-09-21 | 上海汽车齿轮一厂 | Simple stylus percentage tabular form differential casing Internal Spherical Surface coaxality measuring mechanism |
| CN208458607U (en) * | 2018-08-03 | 2019-02-01 | 杭州杰途传动部件有限公司 | A kind of measuring tool beated for measuring differential casing Internal Spherical Surface |
| CN209355851U (en) * | 2019-03-22 | 2019-09-06 | 长春一汽四环金仑汽车零部件有限公司 | A kind of hole Internal Spherical Surface coaxiality check fixture for automobile differential shell |
| CN210981077U (en) * | 2020-01-09 | 2020-07-10 | 江西江铃底盘股份有限公司 | Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole |
-
2021
- 2021-11-10 CN CN202111327542.6A patent/CN114001615B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0363809U (en) * | 1989-10-25 | 1991-06-21 | ||
| CN102052887A (en) * | 2010-11-04 | 2011-05-11 | 南车戚墅堰机车车辆工艺研究所有限公司 | Special detection tool for measuring inner arc radius of coupler knuckle cavity of transition coupler body |
| CN202083332U (en) * | 2011-03-17 | 2011-12-21 | 宁波永信汽车部件制造有限公司 | Ball concentricity measurement device for casing of ball pin chain |
| CN202204426U (en) * | 2011-09-09 | 2012-04-25 | 江苏飞船股份有限公司 | Measuring device for spherical surface of planetary gear |
| CN206330509U (en) * | 2016-12-30 | 2017-07-14 | 北京中科奥倍超声波技术研究院 | Spherical surface of differential mechanism casing size checking device |
| CN207894358U (en) * | 2018-02-10 | 2018-09-21 | 上海汽车齿轮一厂 | Simple stylus percentage tabular form differential casing Internal Spherical Surface coaxality measuring mechanism |
| CN208458607U (en) * | 2018-08-03 | 2019-02-01 | 杭州杰途传动部件有限公司 | A kind of measuring tool beated for measuring differential casing Internal Spherical Surface |
| CN209355851U (en) * | 2019-03-22 | 2019-09-06 | 长春一汽四环金仑汽车零部件有限公司 | A kind of hole Internal Spherical Surface coaxiality check fixture for automobile differential shell |
| CN210981077U (en) * | 2020-01-09 | 2020-07-10 | 江西江铃底盘股份有限公司 | Checking fixture for position degree of inner spherical surface of differential shell to reference straight hole |
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| CN114001615A (en) | 2022-02-01 |
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