阅读说明：本技术 一种汽车后盖铰链总成的检具及其应用方法 (Detection tool for automobile rear cover hinge assembly and application method thereof ) 是由 顾金凤 于 2019-09-24 设计创作，主要内容包括：本发明涉及一种汽车后盖铰链总成的检具,汽车后盖铰链总成包括通过铰链连接的车身件和车盖件,车盖件包括弯管和固定与弯管端部的L连接件,检具包括底盘基座和检测机构,底盘基座上设有第一检测基座、第二检测基座、车身件定位机构、L连接件定位机构和弯管夹紧机构,第一检测基座上设有与L连接件侧面平行的第一检测基准面,第二检测基座上设有与L连接件侧面平行的第二检测基准面；L连接件定位机构包括第一定位面、第二定位面；检测机构包括仪表基座和设于仪表基座上的百分表,百分表的检测头接触L连接件侧面。与现有技术相比,本发明具有操作简单快速、提高生产效率、检测精度高等优点。(The invention relates to a checking fixture of an automobile rear cover hinge assembly, wherein the automobile rear cover hinge assembly comprises an automobile body part and an automobile cover part which are connected through a hinge, the automobile cover part comprises a bent pipe and an L-shaped connecting part fixed at the end part of the bent pipe, the checking fixture comprises a chassis base and a detecting mechanism, the chassis base is provided with a first detecting base, a second detecting base, an automobile body part positioning mechanism, an L-shaped connecting part positioning mechanism and a bent pipe clamping mechanism, the first detecting base is provided with a first detecting reference surface parallel to the side surface of the L-shaped connecting part, and the second detecting base is provided with a second detecting reference surface parallel to the side surface of the L-shaped connecting part; the L-shaped connecting piece positioning mechanism comprises a first positioning surface and a second positioning surface; the detection mechanism comprises an instrument base and a dial indicator arranged on the instrument base, and a detection head of the dial indicator contacts the side face of the L-shaped connecting piece. Compared with the prior art, the invention has the advantages of simple and quick operation, high production efficiency, high detection precision and the like.)

1. A checking fixture for an automobile rear cover hinge assembly comprises an automobile body part (1) and an automobile cover part (4) which are connected through a hinge, wherein the automobile cover part (4) comprises a bent pipe (2) and an L connecting piece (3) which is fixed at the end part of the bent pipe (2), the checking fixture comprises a chassis base (5) and a detection mechanism, the chassis base (5) is provided with a first detection base (8), a second detection base (10), an automobile body part (1) positioning mechanism, an L connecting piece (3) positioning mechanism and a bent pipe (2) clamping mechanism,

it is characterized in that the preparation method is characterized in that,

a first detection reference surface (9) parallel to the side face of the L-shaped connecting piece (3) is arranged on the first detection base (8), and a second detection reference surface (11) parallel to the side face of the L-shaped connecting piece (3) is arranged on the second detection base (10);

the positioning mechanism of the L-shaped connecting piece (3) comprises a first positioning surface which is in contact joint with the upper surface of the L-shaped connecting piece (3) of the automobile rear cover hinge assembly in an opening state, and a second positioning surface which is in contact joint with the upper surface of the L-shaped connecting piece (3) of the automobile rear cover hinge assembly in the opening state;

the detection mechanism comprises an instrument base (6) and a dial indicator (7) arranged on the instrument base (6), and a detection head of the dial indicator (7) is in contact with the side surface of the L-shaped connecting piece (3).

2. The checking fixture for the hinge assembly of the rear cover of the automobile according to claim 1, wherein the first detection reference surface (9) and the second detection reference surface (11) are located on the same plane.

3. The checking fixture for the hinge assembly of the rear cover of the automobile according to claim 1, wherein the positioning mechanism of the L-shaped connecting member (3) further comprises a positioning base (13) and a positioning plate (14) rotatably connected to the positioning base (13), and the first positioning surface is arranged on the bottom surface of the positioning plate (14).

4. The checking fixture for the hinge assembly of the rear cover of the automobile according to claim 1, wherein a positioning block (15) is arranged on the second detection base (10), an end face of the positioning block (15) parallel to the side face of the L-shaped connecting member (3) is the first detection reference surface (9), and a side face of the positioning block (15) in contact with the upper surface of the L-shaped connecting member (3) in an attaching manner is the second positioning surface.

5. The checking fixture for the hinge assembly of the rear cover of the automobile according to claim 1, characterized in that the dial indicator (7) is a dial indicator (7) to be digitally displayed.

6. The detection tool for the hinge assembly of the rear cover of the automobile as claimed in claim 1, wherein the positioning mechanism for the body part (1) is arranged on the second detection base (10) and comprises a positioning shaft pin (12) matched with the connecting mounting hole on the body part (1) and a quick clamp for pressing the body part (1).

7. The testing fixture of the hinge assembly of the rear cover of the automobile according to claim 1, wherein the elbow (2) clamping mechanism comprises a first elbow clamping mechanism (16) and a second elbow clamping mechanism (17), the first elbow clamping mechanism (16) clamps the portion of the elbow (2) close to the automobile body part (1) when the automobile cover part (4) is in the closed state, and the first elbow clamping mechanism (16) clamps the portion of the elbow (2) close to the automobile body part (1) when the automobile cover is in the open state.

8. The testing fixture of the automobile rear cover hinge assembly according to claim 7, characterized in that the first elbow clamping mechanism (16) is arranged on the first testing base (8); the second bent pipe clamping mechanism (17) is fixed on the chassis base (5) through a connecting column.

9. The application method of the detection tool for the automobile rear cover hinge assembly as claimed in claim 1 is characterized by comprising the following steps:

(a) fixing the automobile body part (1) of the automobile rear cover hinge assembly on the checking fixture through an automobile body part (1) positioning mechanism, adjusting the position of an automobile cover part (4) to be in a closed state, enabling the upper surface of the L-shaped connecting part (3) to be attached to the first positioning surface, and fixing the position of the bent pipe (2) by adopting a bent pipe (2) clamping mechanism;

(b) attaching the bottom surface of the instrument base (6) to the first detection reference surface (9), contacting the detection head of the dial indicator (7) with the side surface of the L-shaped connecting piece (3), and returning the dial indicator (7) to zero;

(c) adjusting the position of the car cover part (4) to be in an opening state, enabling the upper surface of the L-shaped connecting piece (3) to be attached to the second positioning surface, and fixing the position of the bent pipe (2) by adopting a bent pipe (2) clamping mechanism;

(d) and (3) attaching the bottom surface of the instrument base (6) to the second detection reference surface (11), contacting the detection head of the dial indicator (7) with the side surface of the L connecting piece (3), reading data of the dial indicator (7), and detecting the deformation of the automobile rear cover hinge assembly from a closed state to an open state.

10. The application method of the gauge for the hinge assembly of the rear cover of the automobile according to claim 9, wherein the first detection reference surface (9) and the second detection reference surface (11) are located on the same plane, and the read data of the dial indicator (7) is deformation.

Technical Field

The invention relates to the technical field of automobile part detection, in particular to a detection tool for an automobile rear cover hinge assembly and an application method thereof.

Background

In the automobile metal structural part, generally, the check tool is used for checking after each rear cover hinge is produced, but once the product quantity is large, if the check tool is operated inconveniently, the production efficiency is influenced, whether the rear cover hinge is qualified or not can be accurately detected, the reliability of the assembled automobile is guaranteed, and the method is very important.

The checking fixture is used for positioning and clamping the rear cover hinge assembly, and no other external force is allowed to change the geometric shape and parameters of the product, so that the correct reliability of the product to be detected is ensured. However, the traditional checking fixture can only detect the mounting hole position of the rear cover hinge assembly, the axial offset parameter of the rear cover hinge assembly cannot be detected, the mounting precision of the rear cover hinge assembly can be seriously influenced if the axial offset of the rear cover hinge assembly exceeds a certain range, reworking can be caused after mounting, the workload is increased, and manpower is wasted.

At present, axial deformation of an opening state and a closing state can only be measured by three coordinates, the positions of the detection planes of the car cover members in the opening state and the closing state need to be detected respectively, and then the deformation is calculated.

Chinese patent CN 204269003U discloses an inspection device for a hinge assembly of a rear cover of an automobile, wherein the hinge assembly of the rear cover comprises an automobile body and a cover member, the automobile body is hinged with the cover member, the inspection device comprises a chassis base, the chassis base is respectively provided with a first detection base, a second detection base, a simulation block, a detection sleeve, a positioning base and a positioning clamping mechanism, the first detection base is respectively provided with a first detection pin, a first clamping mechanism and a second detection pin, the second detection base is respectively provided with a third detection pin and a second clamping mechanism, the positioning base is provided with an automobile body positioning mechanism, the simulation block is provided with a groove, the number and the position of the first detection pin and the third detection pin are consistent with the number and the position of mounting holes of waist-shaped parts of the automobile cover member, the number and the position of the second detection pin are consistent with the number and the position of mounting holes of spherical shafts of the automobile cover member, The positions are consistent, but the detection device mainly detects the number and the positions of the mounting holes and does not relate to the detection of the axial deformation.

Therefore, a checking fixture which is simple and rapid to operate, capable of improving production efficiency and high in detection precision is urgently needed to solve the problems.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a detection tool for an automobile rear cover hinge assembly and an application method thereof.

The purpose of the invention can be realized by the following technical scheme:

a checking fixture for an automobile rear cover hinge assembly comprises an automobile body part and an automobile cover part which are connected through a hinge, wherein the automobile cover part comprises a bent pipe and an L-shaped connecting part fixed at the end part of the bent pipe, the checking fixture comprises a chassis base and a detection mechanism, the chassis base is provided with a first detection base, a second detection base, an automobile body part positioning mechanism, an L-shaped connecting part positioning mechanism and a bent pipe clamping mechanism,

a first detection reference surface parallel to the side face of the L-shaped connecting piece is arranged on the first detection base, and a second detection reference surface parallel to the side face of the L-shaped connecting piece is arranged on the second detection base;

the L-shaped connecting piece positioning mechanism comprises a first positioning surface which is in contact joint with the upper surface of the L-shaped connecting piece of the automobile rear cover hinge assembly in an opening state, and a second positioning surface which is in contact joint with the upper surface of the L-shaped connecting piece of the automobile rear cover hinge assembly in an opening state;

the detection mechanism comprises an instrument base and a dial indicator arranged on the instrument base, and a detection head of the dial indicator is in contact with the side face of the L-shaped connecting piece.

The first detection reference surface and the second detection reference surface are located on the same plane.

The L-shaped connecting piece positioning mechanism further comprises a positioning base and a positioning plate which is rotatably connected to the positioning base, and the bottom surface of the positioning plate is provided with the first positioning surface.

The second detection base is provided with a positioning block, the end face of the positioning block, which is parallel to the side face of the L-shaped connecting piece, is the first detection reference surface, and the side face, which is in contact connection with the upper surface of the L-shaped connecting piece in an attaching mode, is the second positioning surface.

The dial indicator is a dial indicator to be digitally displayed.

The vehicle body part positioning mechanism is arranged on the second detection base and comprises a positioning shaft pin matched with the connecting mounting hole on the vehicle body part and a quick clamp for pressing the vehicle body part.

The elbow clamping mechanism comprises a first elbow clamping mechanism and a second elbow clamping mechanism, when the vehicle cover piece is in a closed state, the first elbow clamping mechanism clamps the position of the elbow close to the vehicle body piece, and when the vehicle cover is in an open state, the first elbow clamping mechanism clamps the position of the elbow close to the vehicle body piece.

The first elbow clamping mechanism is arranged on the first detection base; and the second bent pipe clamping mechanism is fixed on the chassis base through a connecting column.

The invention also provides an application method of the gauge for the automobile rear cover hinge assembly, which comprises the following steps:

(a) fixing the automobile body part of the automobile rear cover hinge assembly on the checking fixture through an automobile body part positioning mechanism, adjusting the position of the automobile cover part to be in a closed state, enabling the upper surface of the L-shaped connecting part to be attached to the first positioning surface, and fixing the position of a bent pipe by adopting a bent pipe clamping mechanism;

(b) attaching the bottom surface of the instrument base to the first detection reference surface, and enabling a detection head of the dial indicator to contact the side surface of the L-shaped connecting piece to reset the dial indicator to zero;

(c) adjusting the position of the cover part to be in an opening state, enabling the upper surface of the L-shaped connecting piece to be attached to the second positioning surface, and fixing the position of the bent pipe by adopting a bent pipe clamping mechanism;

(d) and attaching the bottom surface of the instrument base to the second detection reference surface, contacting a detection head of the dial indicator with the side surface of the L-shaped connecting piece, reading data of the dial indicator, and detecting the deformation of the automobile rear cover hinge assembly from a closed state to an open state.

The working principle of the invention is as follows:

the hinge assembly of the rear cover of the automobile comprises a body part and a cover part which are connected through a hinge, the body part is fixed, the cover part rotates in a plane, if axial deformation or offset exists, the position of the side surface of the L connecting piece on the elbow, which is parallel to the rotating plane, is changed relative to the rotating plane, the invention arranges a first detection reference surface and a second detection reference surface at the position of the L connecting piece when the vehicle cover piece is in a closed state and an open state, the positions of the side surfaces of the L-shaped connecting piece relative to the first detection reference surface and the second detection reference surface are detected through the dial indicator, if the product is not deformed axially, the value detected by the dial indicator is the same, if the product is deformed axially in the opening state and the closing state, the positions of the side surfaces of the L-shaped connecting member with respect to the first detection reference surface and the second detection reference surface are different, and the difference between the two is the deformation amount.

In the detection method, in order to further perform rapid detection and improve efficiency, the dial indicator may be zeroed at the first detection reference surface, and the position detection data at the second detection reference surface is corrected by the position offset of the first detection reference surface and the second detection reference surface, that is, is a difference.

Furthermore, the first detection reference surface and the second detection reference surface are designed to be positioned on the same plane, so that the position deviation amount of the first detection reference surface and the second detection reference surface is 0, and the reading of the dial indicator obtained by detecting the position of the second detection reference surface is the deformation amount.

Compared with the prior art, the invention has the following advantages:

(1) the original gauge and three-coordinate combined measurement are removed, the deformation can be obtained only by respectively carrying out contact measurement on two detection positions by a dial indicator, the requirement on an operator is not high, the operation is simple, and the operation is easy to operate;

(2) the device can be combined with the existing detection die, and can be matched with other items such as mounting holes for detection when the deformation is measured, so that the detection and judgment are quick and effective, the detection efficiency is greatly improved, and manpower and material resources are saved;

(3) the detection precision is high, the measurement precision of the dial indicator is high, and the final detection precision is improved.

Drawings

FIG. 1 is a schematic view of a checking fixture of the present invention in a closed state of a lid member;

FIG. 2 is a schematic view of a checking fixture in an open state of the hood part;

in the drawing, 1 is a vehicle body part, 2 is a bent pipe, 3 is an L-shaped connecting part, 4 is a vehicle cover part, 5 is a chassis base, 6 is an instrument base, 7 is a dial indicator, 8 is a first detection base, 9 is a first detection reference surface, 10 is a second detection base, 11 is a second detection reference surface, 12 is a positioning shaft pin, 13 is a positioning base, 14 is a positioning plate, 15 is a positioning block, 16 is a first bent pipe clamping mechanism, and 17 is a second bent pipe clamping mechanism.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.