阅读说明：本技术 汽车变速器输入轴垫片的选配方法 (Matching method for input shaft gasket of automobile transmission ) 是由 王朔林 时李杰 于 2019-11-22 设计创作，主要内容包括：本发明公开了一种汽车变速器输入轴垫片的选配方法,涉及汽车变速器设备制造技术领域；变速器包括离合器壳体、轴承箱、输入轴总成和中间轴总成；选配方法包括如下步骤：测量所述第一轴承安装位到所述离合器壳体的上端面的实际高度h1；测量所述轴承箱的实际高度h2；测量所述输入轴轴承的下端面到所述输入轴内孔的底面的实际高度h3；测量所述中间轴的下端面到所述中间轴轴承的上端面的实际高度h4；计算修正值△L1；计算应选配的垫片厚度δ；与现有技术相比,本发明可以解决现有选配方法在使用高度尺和深度尺等测量工具进行大长度的高度测量,容易造成较大误差的问题。(The invention discloses an optional method for an input shaft gasket of an automobile transmission, which relates to the technical field of automobile transmission equipment manufacturing, wherein the transmission comprises a clutch shell, a bearing box, an input shaft assembly and an intermediate shaft assembly, and comprises the following steps of measuring the actual height h1 from a first bearing installation position to the upper end face of the clutch shell, measuring the actual height h2 of the bearing box, measuring the actual height h3 from the lower end face of an input shaft bearing to the bottom face of an inner hole of an input shaft, measuring the actual height h4 from the lower end face of the intermediate shaft to the upper end face of the intermediate shaft bearing, calculating a corrected value △ L1, and calculating the thickness delta of the gasket to be selected.)

1. A method for matching an input shaft gasket of an automobile transmission comprises the steps that the transmission comprises a clutch shell, a bearing box, an input shaft assembly and an intermediate shaft assembly; the clutch shell is fixedly connected with the bearing box through a connecting piece, the input shaft assembly comprises an input shaft and an input shaft bearing, and the input shaft assembly is arranged at a first bearing mounting position of the clutch shell through the input shaft bearing; the intermediate shaft assembly comprises an intermediate shaft and an intermediate shaft bearing, and the intermediate shaft assembly is arranged at a second bearing mounting position of the bearing box through the intermediate shaft bearing; the input shaft front end is equipped with the input shaft hole, input shaft hole bottom is equipped with the input shaft gasket, the jackshaft bottom stretches into the axle goes into the axle hole, and with input shaft gasket looks butt, its characterized in that: the matching method comprises the following steps:

(1) measuring an actual height h1 of the first bearing mounting location to the upper end surface of the clutch housing: the method comprises the steps that a measurement test is conducted, the clutch shell is placed on a standard plane before measurement, the height standard block of the clutch shell is made according to design requirements, the dial indicator is reset to zero by using the height standard block of the clutch shell, then the actual height from a first bearing to the upper end face of the clutch shell is measured by taking the first bearing installation position as a reference plane, and h1 is obtained;

(2) measuring the actual height h2 of the bearing housing: the method comprises the steps that a measurement test is provided with a dial indicator and a bearing box height standard block manufactured according to design requirements, the bearing box is placed on a standard plane before measurement, the dial indicator is reset to zero by using the bearing box height standard block, and then the actual height of the bearing box is measured by taking the lower end face of the bearing box as a reference plane to obtain h 2;

(3) measuring the actual height h3 from the lower end surface of the input shaft bearing to the bottom surface of the input shaft inner hole: the measuring and checking tool comprises a dial indicator, a first measuring flat plate, an input shaft assembly height standard block and an input shaft inner hole measuring block, wherein the input shaft assembly height standard block and the input shaft inner hole measuring block are manufactured according to design requirements; before measurement, the input shaft assembly is clamped into the first open slot to be fixed, a dial indicator is reset to zero by using the input shaft assembly height standard block, then the input shaft inner hole measuring block is placed into the input shaft inner hole, the actual depth of the input shaft inner hole is obtained through measurement, finally the distance from the lower end face of the input shaft bearing to the upper end face of the input shaft is measured by taking the lower end face of the input shaft bearing as a datum plane, the actual depth of the input shaft inner hole is subtracted, and the actual height h3 from the lower end face of the input shaft bearing to the bottom face of the input shaft inner hole is obtained through calculation;

(4) measuring the actual height h4 from the lower end face of the intermediate shaft to the upper end face of the intermediate shaft bearing: the measuring and checking tool comprises a dial indicator, an intermediate shaft measuring tool assembly and an intermediate shaft assembly height standard block manufactured according to design requirements; the middle shaft measuring tool assembly comprises a second measuring flat plate and an upright post fixed on the second measuring flat plate, wherein a boss for placing a dial indicator seat is arranged at the top of the upright post, the dial indicator seat can rotate on the boss, and the second measuring flat plate is provided with a second open slot; before measurement, the intermediate shaft assembly is clamped into the first open slot for fixing, a dial indicator is reset to zero by using the intermediate shaft assembly height standard block, and then the actual height from the lower end face of the intermediate shaft to the upper end face of the intermediate shaft bearing is measured by taking the lower end face of the intermediate shaft as a reference face, so that h4 is obtained;

(5) calculating a correction value △ L1, wherein the standard height from the installation position of the first bearing to the upper end surface of the clutch shell is H1, the standard height of the bearing box is H2, the standard height from the lower end surface of the input shaft bearing to the bottom surface of the inner hole of the input shaft is H3, the standard height from the lower end surface of the intermediate shaft to the upper end surface of the intermediate shaft bearing is H4 according to the design requirement, and the correction value △ L1 can be obtained according to the principle of a size chain and a correction value formula:

△L1=（H1+ H2- H3- H4）-（h1+ h2- h3- h4）；

(6) calculating the thickness δ of the gasket to be selected: because the technical requirement of the gap between the upper end surface of the intermediate shaft bearing and the upper end surface of the bearing box is H, H is more than or equal to 0.2mm and less than or equal to 0.5mm, the following can be obtained:

△L1+ h1+ h2- h3- h4-0.5≤δ≤△L1+ h1+ h2- h3- h4-0.2。

2. the method of matching an input shaft spacer for an automotive transmission of claim 1, wherein: and positioning steps are arranged in the first opening groove and the second opening groove.

3. The method of fitting an input shaft washer for an automotive transmission according to claim 1 or 2, characterized in that: and flat plate fixing frames are arranged below the first measuring flat plate and the second measuring flat plate and used for lifting the horizontal heights of the first measuring flat plate and the second measuring flat plate.

Technical Field

The invention relates to the technical field of automobile transmission equipment manufacturing, in particular to a matching method of an automobile transmission input shaft gasket.

Background

The transmission is one of important parts of an automobile, and in the assembly of the transmission assembly, the technical requirement of the clearance from the upper end face of a middle shaft bearing to the upper end face of a bearing box is as follows: 0.2 mm-0.5 mm, the axial clearance is ensured by the selection and matching of the input shaft gasket; the transmission comprises a clutch shell, a bearing box, an input shaft assembly and an intermediate shaft assembly; the clutch shell is fixedly connected with the bearing box through a connecting piece, the input shaft assembly comprises an input shaft and an input shaft bearing, and the input shaft assembly is arranged at a bearing mounting position of the clutch shell through the input shaft bearing; the intermediate shaft assembly comprises an intermediate shaft and an intermediate shaft bearing, and the intermediate shaft assembly is arranged at a bearing mounting position of the bearing box through the intermediate shaft bearing; the input shaft front end is equipped with the input shaft hole, and input shaft hole bottom is equipped with the input shaft gasket, and the jackshaft bottom stretches into axle entry shaft hole to with input shaft gasket looks butt.

The parts related to the matching of the input shaft gasket comprise a clutch shell, a bearing box, an input shaft assembly and an intermediate shaft assembly, and the conventional matching method for the input shaft gasket is that universal measuring tools such as a height gauge, a depth gauge and the like are used for measuring the parts, and the thickness of the input shaft gasket needing to be matched is calculated through a corresponding formula by combining the technical requirement of the gap between the upper end surface of the intermediate shaft bearing and the upper end surface of the bearing box; however, the size of the part involved in the measurement is large, and the height measurement of large length is carried out by using measuring tools such as a height gauge, a depth gauge and the like, so that large errors are easily caused, the accuracy is low, the production and assembly work is influenced, and the quality of the transmission cannot be ensured.

Disclosure of Invention

The invention aims to provide a matching method of an input shaft gasket of an automobile transmission, which can solve the problem that the existing matching method is easy to cause larger errors when a height gauge, a depth gauge and other measuring tools are used for measuring the height with large length.

In order to solve the problems, the invention adopts the technical scheme that: a method for matching an input shaft gasket of an automobile transmission comprises the steps that the transmission comprises a clutch shell, a bearing box, an input shaft assembly and an intermediate shaft assembly; the clutch shell is fixedly connected with the bearing box through a connecting piece, the input shaft assembly comprises an input shaft and an input shaft bearing, and the input shaft assembly is arranged at a first bearing mounting position of the clutch shell through the input shaft bearing; the intermediate shaft assembly comprises an intermediate shaft and an intermediate shaft bearing, and the intermediate shaft assembly is arranged at a second bearing mounting position of the bearing box through the intermediate shaft bearing; the input shaft front end is equipped with the input shaft hole, input shaft hole bottom is equipped with the input shaft gasket, the jackshaft bottom stretches into the axle goes into the axle hole to with the butt of input shaft gasket looks, the selection matches the method and includes the following step:

(1) measuring an actual height h1 of the first bearing mounting location to the upper end surface of the clutch housing: the method comprises the steps that a measurement test is conducted, the clutch shell is placed on a standard plane before measurement, the height standard block of the clutch shell is made according to design requirements, the dial indicator is reset to zero by using the height standard block of the clutch shell, then the actual height from a first bearing to the upper end face of the clutch shell is measured by taking the first bearing installation position as a reference plane, and h1 is obtained;

(2) measuring the actual height h2 of the bearing housing: the method comprises the steps that a measurement test is provided with a dial indicator and a bearing box height standard block manufactured according to design requirements, the bearing box is placed on a standard plane before measurement, the dial indicator is reset to zero by using the bearing box height standard block, and then the actual height of the bearing box is measured by taking the lower end face of the bearing box as a reference plane to obtain h 2;

(3) measuring the actual height h3 from the lower end surface of the input shaft bearing to the bottom surface of the input shaft inner hole: the measuring and checking tool comprises a dial indicator, a first measuring flat plate, an input shaft assembly height standard block and an input shaft inner hole measuring block, wherein the input shaft assembly height standard block and the input shaft inner hole measuring block are manufactured according to design requirements; before measurement, the input shaft assembly is clamped into the first open slot to be fixed, a dial indicator is reset to zero by using the input shaft assembly height standard block, then the input shaft inner hole measuring block is placed into the input shaft inner hole, the actual depth of the input shaft inner hole is obtained through measurement, finally the distance from the lower end face of the input shaft bearing to the upper end face of the input shaft is measured by taking the lower end face of the input shaft bearing as a datum plane, the actual depth of the input shaft inner hole is subtracted, and the actual height h3 from the lower end face of the input shaft bearing to the bottom face of the input shaft inner hole is obtained through calculation;

(4) measuring the actual height h4 from the lower end face of the intermediate shaft to the upper end face of the intermediate shaft bearing: the measuring and checking tool comprises a dial indicator, an intermediate shaft measuring tool assembly and an intermediate shaft assembly height standard block manufactured according to design requirements; the middle shaft measuring tool assembly comprises a second measuring flat plate and an upright post fixed on the second measuring flat plate, wherein a boss for placing a dial indicator seat is arranged at the top of the upright post, the dial indicator seat can rotate on the boss, and the second measuring flat plate is provided with a second open slot; before measurement, the intermediate shaft assembly is clamped into the first open slot for fixing, a dial indicator is reset to zero by using the intermediate shaft assembly height standard block, and then the actual height from the lower end face of the intermediate shaft to the upper end face of the intermediate shaft bearing is measured by taking the lower end face of the intermediate shaft as a reference face, so that h4 is obtained;

(5) calculating a correction value △ L1, wherein the standard height from the installation position of the first bearing to the upper end surface of the clutch shell is H1, the standard height of the bearing box is H2, the standard height from the lower end surface of the input shaft bearing to the bottom surface of the inner hole of the input shaft is H3, the standard height from the lower end surface of the intermediate shaft to the upper end surface of the intermediate shaft bearing is H4 according to the design requirement, and the correction value △ L1 can be obtained according to the principle of a size chain and a correction value formula:

△L1=（H1+ H2- H3- H4）-（h1+ h2- h3- h4）；

(6) calculating the thickness δ of the gasket to be selected: because the technical requirement of the gap between the upper end surface of the intermediate shaft bearing and the upper end surface of the bearing box is H, H is more than or equal to 0.2mm and less than or equal to 0.5mm, the following can be obtained:

△L1+ h1+ h2- h3- h4-0.5≤δ≤△L1+ h1+ h2- h3- h4-0.2。

in the above technical solution, a more specific technical solution may also be: and positioning steps are arranged in the first opening groove and the second opening groove.

Furthermore, a flat plate fixing frame is arranged below the first measuring flat plate and the second measuring flat plate and used for lifting the horizontal heights of the first measuring flat plate and the second measuring flat plate.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

in the process of selecting and matching the input shaft gasket, the parts such as the clutch shell, the bearing box, the input shaft assembly, the intermediate shaft assembly and the like are measured by using the dial indicator, the measurement accuracy is high, the gasket selection accuracy is high, the quality of the transmission is ensured, the measurement process has the advantages of simplicity, rapidness and the like, the requirements of production and assembly work are met, and the problem of large errors easily caused by the fact that the height measurement with a height gauge, a depth gauge and other measurement tools is carried out is solved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a first measurement plate according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a schematic structural view of an intermediate shaft gauge assembly in an embodiment of the present invention;

fig. 5 is a schematic top view of the second measurement plate of fig. 4.

Detailed Description

The invention will be further described in detail with reference to the following examples:

1-5, the transmission comprises a clutch housing 1, a bearing box 2, an input shaft assembly and an intermediate shaft assembly; the clutch shell 1 and the bearing box 2 are fixedly connected through a connecting piece, the input shaft assembly comprises an input shaft 3 and an input shaft bearing 4, and the input shaft assembly is arranged at a first bearing mounting position of the clutch shell 1 through the input shaft bearing 4; the intermediate shaft assembly comprises an intermediate shaft 5 and an intermediate shaft bearing 6, and the intermediate shaft assembly is arranged at a second bearing mounting position of the bearing box 2 through the intermediate shaft bearing 6; the front end of the input shaft 3 is provided with an input shaft inner hole 3-1, the bottom of the input shaft inner hole 3-1 is provided with an input shaft gasket 7, the bottom end of the intermediate shaft 5 extends into the shaft inner hole 3-1 and is abutted against the input shaft gasket 7, and the matching method comprises the following steps:

(1) the actual height h1 of the first bearing mounting site to the upper end face of the clutch housing 1 is measured: the method comprises the following steps of measuring and checking a clutch housing height standard block which is provided with a dial indicator and manufactured according to design requirements, placing the clutch housing 1 on a standard plane before measurement, zeroing the dial indicator by using the clutch housing height standard block, and measuring the actual height from a first bearing to the upper end face of the clutch housing 1 by using a first bearing installation position as a reference plane to obtain h 1;

(2) measuring the actual height h2 of the bearing housing 2: the measuring device is provided with a dial indicator and a bearing box height standard block manufactured according to design requirements, the bearing box 2 is placed on a standard plane before measurement, the dial indicator is reset to zero by using the bearing box height standard block, and then the actual height of the bearing box 2 is measured by taking the lower end face of the bearing box 2 as a reference plane to obtain h 2;

(3) measuring the actual height h3 from the lower end surface of the input shaft bearing 4 to the bottom surface of the input shaft inner bore 3-1: the measuring and checking tool comprises a dial indicator, a first measuring flat plate 8, an input shaft assembly height standard block and an input shaft inner hole measuring block, wherein the input shaft assembly height standard block and the input shaft inner hole measuring block are manufactured according to design requirements, and the first measuring flat plate 8 is provided with a first open slot; before measurement, an input shaft assembly is clamped into a first open slot for fixation, an input shaft assembly height standard block is used for zeroing a dial indicator, then an input shaft inner hole measuring block is placed into an input shaft inner hole 3-1, the actual depth of the input shaft inner hole 3-1 is obtained through measurement, finally the lower end face of an input shaft bearing 4 is used as a datum plane, the distance from the lower end face of the input shaft bearing 4 to the upper end face of the input shaft 3 is measured, the actual depth of the input shaft inner hole 3-1 is subtracted, the actual height h3 from the lower end face of the input shaft bearing 4 to the bottom face of the input shaft inner hole 3-1 is obtained through calculation, and the input shaft inner hole measuring block is used as an indirect measurement means for avoiding the situation that the input shaft inner hole 3-1 is too deep and the dial indicator cannot be measured;

(4) measuring the actual height h4 from the lower end face of the intermediate shaft 5 to the upper end face of the intermediate shaft bearing 6: the measuring and checking tool comprises a dial indicator, an intermediate shaft measuring tool assembly and an intermediate shaft assembly height standard block manufactured according to design requirements; the middle shaft measuring tool assembly comprises a second measuring flat plate 9 and an upright post 10 fixed on the second measuring flat plate 9, wherein a boss 10-1 for placing a dial indicator seat 11 is arranged at the top of the upright post 10, the dial indicator seat 11 can rotate on the boss 10-1, the dial indicator seat 11 moves through rotation so as to reduce the working strength and improve the measuring convenience, and the second measuring flat plate 9 is provided with a second open slot; before measurement, the intermediate shaft assembly is clamped into the first open slot for fixing, a dial indicator is reset to zero by using an intermediate shaft assembly height standard block, then the lower end face of the intermediate shaft 5 is used as a reference face, and the actual height from the lower end face of the intermediate shaft 5 to the upper end face of the intermediate shaft bearing 6 is measured to obtain h 4;

(5) calculating a correction value △ L1, wherein the standard height from the installation position of the first bearing to the upper end surface of the clutch shell is H1, the standard height of the bearing box is H2, the standard height from the lower end surface of the input shaft bearing to the bottom surface of the inner hole of the input shaft is H3, the standard height from the lower end surface of the intermediate shaft to the upper end surface of the intermediate shaft bearing is H4 according to the design requirement, and the correction value △ L1 can be obtained according to the principle of a size chain and a correction value formula:

△L1=（H1+ H2- H3- H4）-（h1+ h2- h3- h4）；

(6) calculating the thickness δ of the gasket to be selected: because the technical requirement of the gap between the upper end surface of the intermediate shaft bearing and the upper end surface of the bearing box is H, H is more than or equal to 0.2mm and less than or equal to 0.5mm, the following can be obtained:

△L1+ h1+ h2- h3- h4-0.5≤δ≤△L1+ h1+ h2- h3- h4-0.2。

positioning steps are arranged in the first open slot and the second open slot; because the length of the input shaft assembly and the middle shaft assembly is longer, flat plate fixing frames are arranged below the first measuring flat plate 8 and the second measuring flat plate 9 and used for lifting the horizontal heights of the first measuring flat plate 8 and the second measuring flat plate 9, so that the input shaft assembly and the middle shaft assembly are respectively clamped into the first open slot and fixed in the first open slot; since the actual height h4 from the lower end surface of the intermediate shaft 5 to the upper end surface of the intermediate shaft bearing 6 is long, it is necessary to provide the upright post 10 on the second measuring flat plate 9 for raising the level of the dial gauge stand 11 so that the dial gauge can measure.

In the process of selecting and matching the input shaft gasket, the parts such as the clutch shell, the bearing box, the input shaft assembly, the intermediate shaft assembly and the like are measured by using the dial indicator, the measurement accuracy is high, the gasket selection accuracy is high, the quality of the transmission is ensured, the measurement process has the advantages of simplicity, rapidness and the like, the requirements of production and assembly work are met, and the problem of large errors easily caused by the fact that the height measurement with a height gauge, a depth gauge and other measurement tools is carried out is solved.