阅读说明：本技术 一种汽车零件平面检具 (Automobile part plane checking fixture ) 是由 尤丹雷 于 2019-10-17 设计创作，主要内容包括：本发明公开了一种汽车零件平面检具,包括基台和设置在基台上的探针,基台的底部设有读数发生装置和读数显示装置,所述读数发生装置包括由探针驱动的动触头、能够与动触头接触的静触头,静触头设置在第一双金属片上,第一双金属片上绕有第一线圈,第一线圈与静触头连接,动触头与电源负极连接,第一线圈与读数显示装置连接,读数显示装置与电源正极连接。本发明的各读数显示装置能够根据探针的下行位移量显示大小不同的读数,进而使检测者知晓零件平面各处平整的程度,以评判零件平面是否符合要求。检测者将汽车零件放置在基台上,即可获取零件平面各处的读数,方便快捷。(The invention discloses a plane gauge for automobile parts, which comprises a base platform and a probe arranged on the base platform, wherein the bottom of the base platform is provided with a reading generation device and a reading display device, the reading generation device comprises a moving contact driven by the probe and a static contact capable of contacting with the moving contact, the static contact is arranged on a first bimetal sheet, a first coil is wound on the first bimetal sheet, the first coil is connected with the static contact, the moving contact is connected with the negative pole of a power supply, the first coil is connected with the reading display device, and the reading display device is connected with the positive pole of the power supply. The reading display devices can display readings with different sizes according to the downward displacement of the probe, so that a detector can know the leveling degree of each part plane, and whether the part plane meets the requirements or not can be judged. The inspector places auto parts on the base station, can acquire the reading of part plane each department, convenient and fast.)

1. The utility model provides an auto parts plane examines utensil, includes base station (10) and probe (20) of setting on the base station, its characterized in that: the reading generation device (30) and the reading display device (40) are arranged at the bottom of the base platform, the reading generation device comprises a moving contact (31) driven by a probe and a static contact (32) capable of contacting with the moving contact, the static contact is arranged on a first bimetal sheet (33), a first coil (34) is wound on the first bimetal sheet, the first coil is connected with the static contact, the moving contact is connected with a power supply cathode, the first coil is connected with the reading display device, and the reading display device is connected with a power supply anode.

2. The automotive parts level gauge of claim 1, wherein: the reading display device (40) comprises a second bimetal sheet (41) and a pointer (42), a second coil (43) is wound on the second bimetal sheet, the first coil (34) is connected with the second coil in series, the second bimetal sheet is connected with the pointer, and the second coil is connected with the positive pole of the power supply.

3. The automotive parts level gauge of claim 2, wherein: the pointer (42) is pivoted on the pointer shaft (44), one end of the second bimetallic strip (41) is provided with a driving piece (45), the other end of the second bimetallic strip is fixedly arranged, one end of the pointer pivoted with the pointer shaft is provided with a connecting hole, and the driving piece is matched in the connecting hole.

4. The automotive parts level gauge of claim 2, wherein: the reading generation device (30) is provided with a support (35), the support is installed on the side wall of a shell (36) of the reading generation device and comprises a first branch (351), a second branch (352) and a third branch (353), the first branch is installed on the side wall of the shell and connected with a metal elastic sheet (37), the movable contact (31) is installed on the metal elastic sheet, and the metal elastic sheet abuts against the probe (20); first bimetal piece (33) is installed on the second branch, and the third branch supports to press on insulating joint (38), and insulating joint installs in the bottom of casing, is equipped with terminal (380) in the insulating joint, and first coil (34) are connected with the terminal through the wire, and second coil (43) are connected with the terminal through the wire.

5. The automotive parts level gauge of claim 4, wherein: the probe (20) is installed on the base platform (10) through the elastic component, the top end of the probe protrudes upwards out of the base platform, the bottom end of the probe extends downwards into a shell (36) of the reading generation device (30) and abuts against the metal elastic sheet (37), and the shell is installed at the bottom of the base platform.

6. The automotive parts level gauge of claim 1, wherein: the number of probes (20) is several, and each probe is matched with a reading generation device (30), a reading display device (40) and a power supply.

Technical Field

The invention relates to a checking fixture for automobile parts.

Background

The part of car, the precision requirement is high, needs to carry out the detection in the aspect of the form and position error to judge whether the part accords with the loading requirement.

Disclosure of Invention

The technical problems solved by the invention are as follows: how to conveniently know the flatness of the plane of the part.

In order to solve the technical problems, the invention provides the following technical scheme: a plane gauge for automobile parts comprises a base platform and a probe arranged on the base platform, wherein a reading generation device and a reading display device are arranged at the bottom of the base platform, the reading generation device comprises a moving contact driven by the probe and a static contact capable of contacting with the moving contact, the static contact is arranged on a first bimetal sheet, a first coil is wound on the first bimetal sheet and connected with the static contact, the moving contact is connected with a negative pole of a power supply, the first coil is connected with the reading display device, and the reading display device is connected with a positive pole of the power supply.

The plane of the automobile part is uneven and is provided with a depression and a protrusion, the plane of the part is placed on the upper surface of the base station, the downward displacement of the probe pressed by the protrusion is larger than that of the probe pressed by the depression.

The probe with large descending displacement drives the moving contact to have large descending displacement, the pressure of the moving contact to the static contact is large, the first coil is electrified, and the moving contact and the static contact can be separated only by enabling the first bimetallic strip to have large deformation for a long time. After the two contacts are separated, the two contacts are contacted again only by short cooling time. Therefore, the contact time of the two contacts is long, the separation time is short, the average value of the current of the reading display device connected with the first coil is large, and the reading display device can display a large numerical value.

The probe with small descending displacement drives the moving contact driven by the probe to have small descending displacement, the pressure of the moving contact on the static contact is small, the first coil is electrified, and the first bimetallic strip needs to be subjected to small deformation in short time, so that the moving contact and the static contact can be separated. After the two contacts are separated, a longer cooling time is needed, and the two contacts can be contacted again. Therefore, the contact time of the two contacts is short, the separation time is long, the average value of the current of the reading display device connected with the first coil is small, and the reading display device can display a small value.

The quantity of the probes is several, and each probe is matched with a reading generation device, a reading display device and a power supply, namely, the probes work independently.

The reading display devices can display readings with different sizes according to the downward displacement of the probe, so that a detector can know the flatness degree of each part (the position contacted with the probe) on the plane of the part, know the maximum value and the minimum value of the flatness degree, calculate an average value according to the readings of the reading display devices, and judge whether the plane of the part meets the requirement according to the maximum value and the minimum value of the flatness degree and the average value.

The checking fixture is fixedly arranged on the base station, and a detector can obtain readings of all parts of the plane of the part by placing the automobile part on the base station, so that the checking fixture is convenient and quick.

Drawings

The invention is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic view of an automotive part plane gauge;

FIG. 2 is a schematic view of the combination of the reading generation device 30 and the reading display device 40 shown in FIG. 1;

fig. 3 is an enlarged view of a portion a in fig. 1.

The symbols in the drawings illustrate that:

10. a base station;

20. a probe; 21. an annular flange; 22. a locking member; 23. a spring;

30. a reading generation device; 31. a moving contact; 32. static contact; 33. a first bimetal sheet; 34. a first coil; 35. a support; 351. a first branch; 352. a second branch; 353. a third branch; 36. a housing; 37. a metal spring sheet; 38. an insulated joint; 380. a binding post;

40. a reading display device; 41. a second bimetallic strip; 42. a pointer; 43. a second coil; 44. a pointer shaft; 45. a drive member;

50. an automobile part.

Detailed Description

Referring to fig. 1, the plane gauge for the automobile parts comprises a base 10 and a probe 20 arranged on the base, wherein a reading generation device 30 and a reading display device 40 are arranged at the bottom of the base.

The number of the probes 20 is several, the several probes are distributed at the position where the plane of the automobile part can contact, and can be set according to the actual situation, for example, the several probes are distributed along the circumferential direction to detect the cylindrical part; or detecting square parts according to square distribution.

Each probe 20 is provided with a reading generation device 30, a reading display device 40 and a power supply, the reading generation device is installed at the bottom of the base station, and the reading display device can be installed on the outer side wall of the counting generation device or directly installed at the bottom of the base station. The power supply may be mounted directly to the bottom of the base station. The connections of the reading generation means 30, the reading display means 40 and the power supply are realized by wires.

With reference to fig. 1 and 2, the reading generation device 30 includes a movable contact 31 driven by a probe, and a fixed contact 32 capable of contacting with the movable contact, the fixed contact is disposed on a first bimetal 33, a first coil 34 is wound on the first bimetal, the first coil is connected to the fixed contact, the movable contact is connected to a negative electrode of a power supply, the first coil is connected to a reading display device, and the reading display device is connected to a positive electrode of the power supply.

The auto parts that need detect are placed on base station 10, and the probe of the planar protruding department oppression of auto parts, its down displacement volume is great, and the probe of the planar sunken department oppression of auto parts, down displacement volume are less. The probe with large downward displacement drives the moving contact 31 to have large downward displacement, the moving contact has large pressure on the static contact 32, the first coil 34 is electrified, and the first bimetal sheet 33 needs to be deformed for a long time to separate the moving contact from the static contact. After the two contacts are separated, the two contacts are contacted again only by short cooling time. In this way, the contact time of the two contacts is long, the separation time is short, the average value of the current of the reading display device connected with the first coil is large, and the reading display device 40 can display a large value. The probe with small descending displacement amount has the advantages that the descending displacement amount of the moving contact driven by the probe is small, the pressure of the moving contact on the static contact is small, the first coil is electrified, and the moving contact and the static contact can be separated by enabling the first bimetal sheet to generate small deformation amount in short time. After the two contacts are separated, a longer cooling time is needed, and the two contacts can be contacted again. Therefore, the contact time of the two contacts is short, the separation time is long, the average value of the current of the reading display device connected with the first coil is small, and the reading display device can display a small value.

The reading display device 40 comprises a second bimetallic strip 41 and a pointer 42, wherein a second coil 43 is wound on the second bimetallic strip, the first coil 34 is connected with the second coil in series, the second bimetallic strip is connected with the pointer, and the second coil is connected with the positive pole of the power supply. The trend of the current is as follows: the power supply positive pole-the second coil-the first coil-the static contact-the moving contact-the power supply negative pole. When the second coil has a current with a larger average value, the second bimetal 41 has a larger deformation, the angle of the second bimetal for driving the pointer to rotate is larger, and the numerical value pointed by the pointer is larger. When the current with a smaller average value exists in the second coil, the deformation amount of the second bimetal sheet 41 is small, the angle of the second bimetal sheet for driving the pointer to rotate is small, and the numerical value pointed by the pointer is small.

The pointer 42 is pivoted on the pointer shaft 44, one end of the second bimetallic strip 41 is provided with a driving part 45, the other end is fixedly arranged, one end of the pointer pivoted with the pointer shaft is provided with a connecting hole, and the driving part is matched in the connecting hole. The deformation of the second bimetallic strip drives the pointer via the drive member 45, which rotates about the pointer axis. The reading display device 40 also has a housing, one end of the second bimetallic strip is fixedly mounted on the inner side wall of the housing, and the pointer shaft 44 is mounted on the inner side wall of the housing.

The reading generation device 30 is provided with a support 35, the support is mounted on the side wall of a shell 36 of the reading generation device, the support comprises a first branch 351, a second branch 352 and a third branch 353, the first branch is mounted on the side wall of the shell, the first branch is connected with a metal elastic sheet 37, the movable contact 31 is mounted on the metal elastic sheet, and the metal elastic sheet abuts against the probe 20; the first bimetal piece 33 is installed on the second branch, the third branch is pressed against the insulating joint 38, the insulating joint is installed at the bottom of the shell, a binding post 380 is arranged in the insulating joint, the first coil 34 is connected with the binding post through a wire, and the second coil 43 is connected with the binding post through a wire. The wire connecting the first coil and the terminal is arranged on the third branch, and the moving contact 31 and the wire of the power supply are distributed on the metal elastic sheet.

The probe 20 is installed on the base station 10 through an elastic component, the top end of the probe protrudes upwards from the base station, the bottom end of the probe extends downwards into the shell 36 of the reading generation device 30 and abuts against the metal elastic sheet 37, and the shell is installed at the bottom of the base station. The elastic component has the functions of: the automobile parts are placed on the base station, the probe is pressed, the elastic component accumulates elastic potential energy, the automobile parts leave the base station, the elastic potential energy is released, and the probe resets. As shown in fig. 3, specifically, the probe is provided with an annular flange 21, the bottom of the base is provided with a mounting hole site, the annular flange is located in the mounting hole site, a locking member 22 is screwed in the mounting hole site, a spring 23 is arranged between the locking member and the annular flange, and the bottom end of the probe protrudes out of the locking member and extends into a shell 36 of the reading generation device 30 to abut against a metal elastic sheet 37.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.