Double-row ball bearing clearance verification device and method
阅读说明：本技术 一种双列球轴承游隙验证装置及方法 (Double-row ball bearing clearance verification device and method ) 是由 葛海岸 梅松 郑为 葛志华 陈校雨 于 2020-06-18 设计创作，主要内容包括：本发明涉及一种双列球轴承游隙验证装置,包括一个双层测试平台,所述双层测试平台的下层设有轮毂总成工装,使用时轮毂总成固定安装在轮毂总成工装上；所述双层测试平台的上层设有轴向加载装置,所述轴向加载装置位于轮毂总成中轮毂的正上方,使用时与所述轮毂端面固定连接用于对轮毂施加轴向的载荷；还包括钢球,使用时所述钢球放置在轮毂总成的轮毂尾孔处,所述钢球直径大于轮毂尾孔直径；还包括千分表,所述千分表通过支架安装在双层测试平台上,使用时所述千分表的探针垂直指在钢球的顶部位置,且与轮毂总成的双列球轴承的轴线重合。本发明不需对转向节和轮毂加工,提供一种快捷且准确的双列球轴承游隙验证方式。(The invention relates to a double-row ball bearing clearance verification device, which comprises a double-layer test platform, wherein a hub assembly tool is arranged on the lower layer of the double-layer test platform, and the hub assembly is fixedly arranged on the hub assembly tool when in use; the upper layer of the double-layer test platform is provided with an axial loading device, the axial loading device is positioned right above a hub in the hub assembly and is fixedly connected with the end face of the hub to apply axial load to the hub when in use; the steel ball is placed at the hub tail hole of the hub assembly when the steel ball is used, and the diameter of the steel ball is larger than that of the hub tail hole; the testing device is characterized by further comprising a dial indicator, wherein the dial indicator is installed on the double-layer testing platform through a support, and when the testing device is used, a probe of the dial indicator vertically points to the top position of the steel ball and coincides with the axis of a double-row ball bearing of the hub assembly. The invention provides a quick and accurate double-row ball bearing clearance verification method without processing a steering knuckle and a hub.)
1. The utility model provides a double-row ball bearing play verification device which characterized in that: comprises a double-layer test platform which is provided with a test platform,
a hub assembly tool (11) is arranged on the lower layer of the double-layer test platform, and the hub assembly (7) is fixedly arranged on the hub assembly tool (11) when the double-layer test platform is used;
the upper layer of the double-layer test platform is provided with an axial loading device, the axial loading device is positioned right above a hub (72) in the hub assembly (7), and is fixedly connected with the end face of the hub (72) during use and used for applying axial load to the hub (72);
the steel ball bearing is characterized by further comprising a steel ball (6), wherein the steel ball (6) is placed at the tail hole of the hub (72) of the hub assembly (7) in use, and the diameter of the steel ball (6) is larger than that of the tail hole of the hub (72);
the testing device is characterized by further comprising a dial indicator (5), wherein the dial indicator (5) is installed on the double-layer testing platform through a support, and when the testing device is used, a probe of the dial indicator (5) vertically points to the top position of the steel ball (6) and coincides with the axis of a double-row ball bearing (71) of the hub assembly (7).
2. The double row ball bearing play verification device according to claim 1, characterized in that: the double-layer test platform comprises a loading platform (2) and a device platform (9) which are arranged from top to bottom, wherein the loading platform (2) and the device platform (9) are connected in a supporting mode through a plurality of stand columns (3).
3. The double row ball bearing play verification device according to claim 2, characterized in that: the loading platform (2) is rectangular, and four corners of the loading platform are connected with the device platform (9) through the upright posts (3).
4. The double row ball bearing play verification device according to claim 2, characterized in that: the dial indicator (5) is installed on the device platform (9) through the magnetic support (4) in an adsorption mode.
5. The double row ball bearing play verification device according to claim 1, characterized in that: the axial loading device comprises a loading cylinder (1), a loading sleeve (8) is arranged at the end of the loading cylinder (1), and the loading sleeve (8) is fixedly mounted on the end face of the hub (72) through a bolt and exposes the steel ball (6) when the axial loading device is used.
6. The double row ball bearing play verification device according to claim 5, characterized in that: a loading cylinder (1) in the axial loading device can be replaced by a loading motor, and a screw rod mechanism is arranged on an output shaft of the loading motor and is used for being connected with a loading sleeve (8).
7. The double row ball bearing play verification device according to claim 5, characterized in that: the loading sleeve (8) comprises a flange plate (81) matched with the end face of the hub (72), the left side and the right side of the flange plate (81) are respectively provided with a supporting plate (82), and the upper ends of the supporting plates (82) are connected through a connecting plate (83).
8. The double row ball bearing play verification device according to claim 1, characterized in that: the hub assembly tool (11) comprises a fixing piece matched with a connection point on the steering knuckle (73), the fixing piece is connected with the corresponding connection point on the steering knuckle (73) through a bolt, and the fixing piece is fixed on the double-layer test platform.
9. The double row ball bearing play verification device according to claim 8, characterized in that: the fixing piece is a fixing column (13) or a fixing block (14), wherein a bolt hole is formed in the top of the fixing column (13), and a bolt hole is formed in the side face of the fixing block (14).
10. A play verification method of a double row ball bearing play verification apparatus according to any one of claims 1 to 9, characterized by comprising the steps of:
s1, installing the measured hub assembly (7) on a double-row ball bearing clearance verification device, wherein the measured hub assembly (7) is a clearance test sample piece with the original clearance larger than that of the currently designed double-row ball bearing standard piece;
s2, placing a steel ball (6) at the tail hole position of a hub (72), pointing a probe of a dial indicator (5) at the top position of the steel ball (6) and coinciding with the axis of a double-row ball bearing (71);
s3, setting the load of the axial loading device as the load required by the play of the measured hub assembly (7), and setting the loading rate and the dwell time;
s4, after the axial loading device is started to load downwards, the numerical value c1 of the dial indicator (5) at the moment is recorded, and the loading is stopped;
s5, after the axial loading device is started to load upwards, the numerical value c2 of the dial indicator (5) at the moment is recorded, and the loading is stopped;
s6, the residual play value of the measured hub assembly (7) is c-c 2-c 1;
and S7, the consumed play amount e in the press fitting process is a-c, wherein a is the original play of the tested hub assembly (7).
Technical Field
The invention relates to the technical field of automobile hub bearing units, in particular to a double-row ball bearing clearance verification device and method.
Background
At present, the play verification is widely applied to the field of design and manufacture of double-row ball bearings. However, the existing play verification method has the problems of long period and large measurement error. Technical staff is when doing the play verification, can use the play detector to measure after knuckle and HUB (wheel HUB) are impressed in order to guarantee the bearing, need process knuckle and HUB in advance, prevent knuckle goat's horn and HUB ring flange and examine test table and interfere. Because generally adopt the wire-electrode cutting mode during cutting knuckle and HUB, need the car processing plastic after the cutting is accomplished, used cycle is generally about a week, and the cycle overlength that consumes and process are comparatively loaded down with trivial details. After the knuckle is cut, the rigidity of the knuckle and the HUB is reduced due to the removal of the cut area, and a large error exists in the play measurement.
Disclosure of Invention
The invention aims to provide a double-row ball bearing play verification device and a double-row ball bearing play verification method, which do not need to process a steering knuckle and a hub and provide a quick and accurate double-row ball bearing play verification mode.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a double-row ball bearing play verification device which characterized in that: comprises a double-layer test platform which is provided with a test platform,
the lower layer of the double-layer test platform is provided with a hub assembly tool 11, and the hub assembly 7 is fixedly arranged on the hub assembly tool 11 when the double-layer test platform is used;
the upper layer of the double-layer test platform is provided with an axial loading device, the axial loading device is positioned right above a hub 72 in the hub assembly 7, and is fixedly connected with the end face of the hub 72 to apply axial load to the hub 72 when in use;
the
the testing device further comprises a
Further, the double-layer test platform comprises a loading platform 2 and a device platform 9 which are arranged up and down, and the loading platform 2 and the device platform 9 are connected through a plurality of stand columns 3 in a supporting mode.
Furthermore, the loading platform 2 is rectangular, and four corners of the loading platform are connected with the device platform 9 through the upright posts 3.
Further, the
Further, the axial loading device comprises a loading cylinder 1, a loading sleeve 8 is arranged at the end of the loading cylinder 1, and when the axial loading device is used, the loading sleeve 8 is fixedly installed on the end face of the hub 72 through a bolt and exposes the
Further, the loading cylinder 1 in the axial loading device can be replaced by a loading motor, and a screw mechanism is arranged on an output shaft of the loading motor and is used for being connected with the loading sleeve 8.
Furthermore, the loading sleeve 8 comprises a
Further, wheel hub assembly frock 11 includes with knuckle 73 go up tie point assorted mounting, the mounting passes through bolted connection with the corresponding tie point on the knuckle 73, the mounting is fixed on double-deck test platform.
Further, the fixing piece is a fixing column 13 or a fixing block 14, wherein a bolt hole is formed in the top of the fixing column 13, and a bolt hole is formed in the side face of the fixing block 14.
A clearance verification method of a double-row ball bearing clearance verification device is characterized by comprising the following steps:
s1, installing the measured hub assembly 7 on a double-row ball bearing clearance verification device, wherein the measured hub assembly 7 is a clearance test sample piece with the original clearance larger than that of the currently designed double-row ball bearing standard piece;
s2, placing the
s3, setting the load of the axial loading device as the load required by the play of the measured hub assembly 7, and setting the loading rate and the dwell time;
s4, after the axial loading device is started to load downwards, recording the numerical value c1 of the
s5, after the axial loading device is started to load upwards, recording the numerical value c2 of the
s6, the residual play value of the measured hub assembly 7 is c 2-c 1;
and S7, the consumed play amount e in the press fitting process is a-c, wherein a is the original play of the measured hub assembly 7.
The invention has the beneficial effects that: starting from the actual use and assembly of the double-row ball bearing, the device can be used for intuitively measuring the working clearance value (residual clearance value) of the double-row ball assembly after the press mounting of the large-clearance bearing sample piece by simulating the press mounting process of the double-row ball bearing loading, and evaluating the original clearance design of the bearing. The method is simple and has high accuracy because the steering knuckle and the HUB do not need to be processed. The device required by the method is simple in structure, convenient to operate and high in detection efficiency, and can realize clearance verification of the double-row ball assembly, so that the accuracy and efficiency of the designed clearance verification of the product are improved.
Drawings
Fig. 1 is a schematic perspective view of a double-row ball bearing play verification device in an embodiment.
Fig. 2 is a schematic side view of the double-row ball bearing play verification device in the embodiment.
Fig. 3 is a schematic view of a portion a in fig. 1.
Fig. 4 is a schematic diagram of the use principle of the double-row ball bearing play verification device in the embodiment.
Fig. 5 is a schematic plan view of a hub assembly (large-play bearing sample) under test in the example.
FIG. 6 is a schematic sectional view of a hub assembly (large-play bearing sample) under test in the example.
In the figure: 1. the device comprises a loading cylinder, a loading platform, a column 3, a magnetic support 4, a
Detailed Description
In order to better understand the present invention, the following embodiments are further described.
The utility model provides a double-row ball bearing play verifying attachment, includes a double-deck test platform, double-deck test platform is including the loading platform 2 and the device platform 9 of arranging from top to bottom, loading platform 2 is the rectangle, and its four angles department is connected with device platform 9 through stand 3.
The device platform 9 is provided with a hub assembly tool 11, and the hub assembly 7 is fixedly arranged on the hub assembly tool 11 when in use.
The hub assembly tool 11 comprises a fixing piece matched with a connection point on the steering knuckle 73, the fixing piece is connected with the corresponding connection point on the steering knuckle 73 through a bolt, and the fixing piece is fixed on the device platform 9. The fixing piece is a fixing column 13 or a fixing block 14, wherein a bolt hole is formed in the top of the fixing column 13, and a bolt hole is formed in the side face of the fixing block 14. As shown in fig. 4, two fixing posts 13 and a fixing block 14 are provided in the present embodiment.
The loading platform 2 is provided with an axial loading device, the axial loading device is positioned right above a hub 72 in the hub assembly 7, and is fixedly connected with the end face of the hub 72 in use and used for applying axial load to the hub 72. As shown in fig. 4, arrows on both sides.
The axial loading device comprises a loading cylinder 1, a loading sleeve 8 is arranged at the end of the loading cylinder 1, and the loading sleeve 8 is fixedly mounted on the end face of the hub 72 through a bolt and exposes the
The loading cylinder 1 in the axial loading device can be replaced by a loading motor, and a screw rod mechanism is arranged on an output shaft of the loading motor and is used for being connected with the loading sleeve 8.
The
the device is characterized by further comprising a
The principle that this embodiment is based on, the play is verified mainly to whether suitable a kind of verification class work of double-row ball bearing standard component play that the design was accomplished, specifically as follows:
(1) firstly, a large-clearance bearing sample (namely the measured hub assembly 7 in the embodiment and formed by press mounting of the double-row ball bearing 71, the hub 72 and the knuckle 73) which is larger than the specified original clearance (clearance before press mounting) of the double-row ball bearing standard component is manufactured, and the original clearance of the large-clearance bearing sample is a (clearance before press mounting);
(2) after the knuckle 73 and the hub 72 are pressed and mounted on the large-clearance bearing sample, measuring a residual clearance value c (clearance after pressing and mounting);
(3) and (4) calculating the clearance value consumed in the press mounting process by measuring the residual clearance value after press mounting, wherein the clearance amount e is a clearance amount a-c in the press mounting process.
The original clearance value and the residual clearance value of the large-clearance bearing sample piece are measured, so that the clearance quantity e consumed in the whole press fitting process can be calculated, and the appropriate original clearance of the existing double-row ball bearing standard piece can be designed according to the consumed clearance quantity.
A clearance verification method of a double-row ball bearing clearance verification device comprises the following steps:
s1, installing the measured hub assembly 7 on a double-row ball bearing play verification device, wherein the measured hub assembly 7 is a play test sample (namely a large-play bearing sample, wherein the play refers to the play of a double-row ball bearing 71 in the measured hub assembly 7) of which the original play is larger than the original play of the currently designed double-row ball bearing standard component;
s2, placing the
S3, setting the load of the axial loading device as the load required by the play of the measured hub assembly 7, and setting the loading rate and the dwell time; the parameters of the embodiment are that the loading force rate is 100N/min, the pressure maintaining time is 10S and the load is 300N; the output load error of the axial motor is less than or equal to 10N;
s4, after the axial loading device is started to load downwards, recording the numerical value c1 of the
s5, after the axial loading device is started to load upwards, recording the numerical value c2 of the
s6, the residual play value of the measured hub assembly 7 is c 2-c 1;
and S7, the consumed play amount e in the press fitting process is a-c, wherein a is the original play of the measured hub assembly 7.
And e is compared with the original clearance value e1 of the double-row ball bearing 71 currently designed in the drawing, and if the clearance value is more than-0.04 mm and less than e1-e and less than 0mm, the clearance value of the double-row ball bearing 71 designed in the drawing can be verified to meet the requirement.
The above description is only an application example of the present invention, and certainly, the present invention should not be limited by this application, and therefore, the present invention is still within the protection scope of the present invention by equivalent changes made in the claims of the present invention.