CN221882430U - Spacing detection device - Google Patents

Abstract

The present application discloses a spacing detection device, which belongs to the technical field of detection devices. The spacing detection device includes a base and a measuring assembly. The base is provided with a positioning part for positioning the workpiece to be detected. The measuring assembly includes a housing, a lever, a return member and a measuring meter. The measuring meter is mounted on the housing. The middle part of the lever is rotatably connected to the housing. The return member connects the lever and the housing. Under the restoring force of the return member, the two ends of the lever are in contact with the measuring head of the measuring meter and the workpiece to be detected respectively. The spacing detection device of the present application has high detection efficiency and helps to improve the production efficiency of the enterprise.

Description

A spacing detection device

Technical Field

The present application belongs to the technical field of detection devices, and in particular, relates to a spacing detection device.

Background Art

With the increasingly sophisticated technical requirements for new energy vehicle components, especially the drive motor spindle, which is crucial in the electric drive system, it is necessary to ensure the stability of its production process and meet the technical requirements. The position and size between the bearing mounting surface and the reference surface in the structure are very important. The inspection frequency must be tightened during the processing to ensure the customer's first-time pass rate.

In the related art, a digital height gauge is used to measure the distance between the bearing mounting surface on the main shaft of the drive motor and the reference surface, and the measured value is used to determine whether the distance meets the specified requirements. The measurement process is cumbersome and inefficient.

Utility Model Content

The present application aims to at least to some extent solve the technical problem of low efficiency in determining whether the spacing between the bearing mounting surface of the main shaft of the driving motor and the reference surface is qualified in the related art. To this end, the present application provides a spacing detection device.

An embodiment of the present application provides a spacing detection device, comprising:

A base, provided with a positioning portion for positioning a workpiece to be inspected;

The measuring assembly comprises a shell, a lever, a restoring member and a measuring scale, wherein the shell is mounted on the base, the measuring scale is mounted on the shell, the middle portion of the lever is rotatably connected to the shell, and the restoring member is connected to the lever and the shell; under the restoring force of the restoring member, one end of the lever contacts the measuring head of the measuring scale, and the other end is used to contact the workpiece to be detected.

In some embodiments, the base includes a pedestal, a mounting platform and a positioning seat, the mounting platform is mounted on the pedestal, the positioning seat and the shell are both mounted on the mounting platform, and the positioning portion is disposed on the positioning seat.

In some embodiments, the positioning seat is movably connected to the mounting platform.

In some embodiments, the base is provided with a plurality of the positioning seats, and the plurality of the positioning seats are all movably connected to the mounting platform.

In some embodiments, the installation platform is tilted, and a plurality of the positioning seats are arranged in sequence along the tilt direction of the installation platform.

In some embodiments, the positioning portion is a positioning groove.

In some embodiments, the spacing detection device further includes a rolling element rotatably connected to the base, and at least a portion of the rolling element is located in the positioning groove.

In some embodiments, a plurality of measuring components are provided, and the plurality of measuring components are arranged sequentially along the length direction of the workpiece to be inspected.

In some embodiments, the return member is a torsion spring, and two ends of the torsion spring are fixedly connected to the housing and the lever respectively.

In some embodiments, an end of the lever for contacting the workpiece to be inspected is provided with an alloy head, and the lever contacts the workpiece to be inspected through the alloy head.

The utility model has at least the following beneficial effects:

The spacing detection device of the present application includes a base and a measuring component. The base is provided with a positioning portion for positioning the workpiece to be detected. The measuring component includes a shell, a lever, a return member and a measuring table. The measuring table is mounted on the shell. The middle part of the lever is rotatably connected to the shell. The return member connects the lever and the shell. Under the restoring force of the return member, the two ends of the lever are in contact with the measuring head of the measuring table and the workpiece to be detected respectively.

In this way, during the inspection, the workpiece to be inspected is positioned on the base through the positioning part, and under the action of the return member, one end of the lever contacts the surface to be inspected of the workpiece to be inspected. When the spacing between the surface to be inspected of the workpiece to be inspected and the reference surface of the workpiece to be inspected does not meet the specified requirements, the position of the lever after contacting the workpiece to be inspected will change compared with the reference position of the lever determined by the reference workpiece during zeroing. Once the position of the lever changes, the telescopic size of the measuring head of the measuring table will also change accordingly, so that the measuring table can measure the error value between the workpiece to be inspected and the reference workpiece. The measurement personnel read the error value and compare whether the error value is within the error range to make a judgment on the qualification of the workpiece to be inspected. The detection efficiency is high, which helps to improve the production efficiency of the enterprise.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG. 1 shows a side view of a spacing detection device after a workpiece to be detected is installed in one or more embodiments of the present application.

FIG. 2 shows a top view of a spacing detection device in one or more embodiments of the present application.

FIG3 shows a front view of the spacing detection device after the workpiece to be detected is installed in one or more embodiments of the present application.

FIG. 4 is a simplified diagram showing the structure of a measuring component of a spacing detection device in one or more embodiments of the present application.

Figure markings: 100-spacing detection device, 110-base, 111-base, 112-installing platform, 1121-slide rail, 113-positioning seat, 1131-slide groove, 113a-positioning part, 120-measuring component, 121-housing, 122-lever, 123-return member, 124-measuring table, 1241-measuring head, 130-rolling member, 200-workpiece to be detected, 200a-reference surface, 200b-surface to be detected.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

With the increasingly sophisticated technical requirements for new energy vehicle components, especially the drive motor spindle, which is crucial in the electric drive system, it is necessary to ensure the stability of its production process and meet the technical requirements. The position and size between the bearing mounting surface and the reference surface in the structure are very important. The inspection frequency must be tightened during the processing to ensure the customer's first-time pass rate.

In the related art, a digital height gauge is used to measure the distance between the bearing mounting surface on the main shaft of the drive motor and the reference surface, and the measured value is used to determine whether the distance meets the specified requirements. The measurement process is cumbersome and inefficient.

In the related art, the machined drive motor spindle is first removed from the machine tool and placed on the base of the digital height gauge. Then the measuring foot of the digital height gauge is moved to make the measuring foot contact the reference surface of the drive motor spindle. Then the value of the digital height gauge is reset to zero. Then the measuring foot is moved to the bearing mounting surface. Finally, the value of the measuring scale is read. This value is the distance between the reference surface and the bearing mounting surface. The distance from the bearing mounting surface to the reference surface is judged based on this value. If there are multiple bearing mounting surfaces in the same drive motor spindle, the measuring foot is moved multiple times so that the measuring foot contacts each bearing mounting surface respectively, and the values are read and judged respectively.

Therefore, in the related art, when judging whether the distance between the bearing mounting surface of the drive motor main shaft and the reference surface is qualified, there is a technical problem of low efficiency. The embodiment of the present application provides a distance detection device, which can at least solve the above technical problem to a certain extent.

The present application is described below with reference to the accompanying drawings and specific embodiments:

As shown in FIG. 1 and FIG. 2 , the spacing detection device 100 of the present application includes a base 110 and a measurement component 120 .

The base 110 is provided with a positioning portion 113 a for positioning the workpiece 200 to be inspected.

The base 110 is the foundation for installing the measuring assembly 120 and the workpiece 200 to be inspected, and provides support for the workpiece 200 to be inspected and the measuring assembly 120. Its specific structure, shape, etc. are various and are not limited in this application. The positioning portion 113a can be a positioning protrusion, a positioning groove, etc., which are not limited in this application. The function of the positioning portion 113a is to fix the position of the workpiece 200 to be inspected during measurement and prevent it from moving freely.

As shown in FIG. 1 and FIG. 4 , the measuring assembly 120 includes a housing 121 , a lever 122 , a return member 123 and a measuring gauge 124 .

The shell 121 is installed on the base 110. The shell 121 is the installation base of the lever 122, the return member 123 and the measuring meter 124. It supports and positions each component. Its specific structure, shape, etc. are diverse and are not limited in this application.

The measuring gauge 124 is mounted on the housing 121 and is used to measure and display the error between the workpiece 200 to be tested and the reference workpiece. The measuring gauge 124 may be a dial gauge, a micrometer, etc. In some embodiments, the measuring gauge 124 is a digital dial gauge, and the sleeve of the dial gauge is fixedly connected to the housing 121. The structure of the dial gauge is known to those skilled in the art and will not be described in detail herein.

As shown in FIG4 , the middle part of the lever 122 is rotatably connected to the housing 121, and the lever 122 can rotate around the rotation axis. The return member 123 is connected to the lever 122 and the housing 121. Under the action of the return member 123, one end of the lever 122 contacts the measuring head 1241 of the measuring gauge 124, and the other end contacts the workpiece 200 to be detected. The return member 123 can make the lever 122 contact the surface 200b to be detected within the possible error range of the surface 200b to be detected of the workpiece to be measured.

Before using the spacing detection device 100 of the present application, it is necessary to perform a zeroing operation, and the specific method is as follows: prepare a workpiece that has the same structure as the workpiece 200 to be detected, has precise dimensions, and meets the requirements as a reference workpiece for zeroing; position the reference workpiece on the base 110 through the positioning portion 113a, and the lever 122 contacts the surface to be detected of the reference workpiece under the action of the return member 123, and the value of the measuring meter 124 is adjusted to zero at this time; then remove the reference workpiece, and the zeroing operation is completed.

After the zeroing operation is completed, the spacing detection device 100 can be used to detect the workpiece: the workpiece 200 to be detected is positioned on the base 110 through the positioning part 113a (after positioning, the reference surface 200a of the workpiece 200 to be detected and the reference surface of the reference workpiece are located at the same place on the base 110), and the lever 122 contacts the surface 200b to be detected of the workpiece 200 to be detected under the action of the return member 123. If the spacing H1 from the surface 200b to be detected of the workpiece 200 to be detected to the reference surface 200a is inconsistent with the spacing H2 from the surface to be detected of the reference workpiece to the reference surface, then the position of the lever 122 at this time is inconsistent with the position when the reference workpiece is zeroed, which will cause the distance of the measuring head 1241 of the measuring table 124 to be inconsistent. At this time, the value displayed on the measuring table 124 is the difference △H between H1 and H2, that is, the error value; at this time, the measurement staff determines whether the error value △H is within the error range. If it is within the required range, the workpiece is qualified.

Compared with the related art, which uses a digital height gauge for measurement, the measurement steps of the spacing measurement device 100 of the present application are simpler, and the error value can be directly obtained. The detection speed is fast and the efficiency is high, which helps to improve the production efficiency of the enterprise.

In some embodiments, the base 110 includes a base 111 , a mounting platform 112 and a positioning seat 113 , the mounting platform 112 is mounted on the base 111 , the positioning seat 113 and the housing 121 are both mounted on the mounting platform 112 , and the positioning portion 113 a is disposed on the positioning seat 113 .

The base 110 is composed of a base 111, a mounting platform 112 and a positioning seat 113, and is a split structure design, which can facilitate the processing and molding of the base 110 and reduce the difficulty of processing and manufacturing. In addition, after such a design, the base 111, the mounting platform 112 and the positioning seat 113 can be made of different materials, which helps to reduce the manufacturing cost of the spacing detection device 100.

In some embodiments, the positioning seat 113 is movably connected to the mounting platform 112 .

The movable connection means that the phase position between the positioning seat 113 and the mounting base 110 is not unique but can be changed, and the positioning seat 113 can be installed at different positions of the mounting platform 112 .

The positioning seat 113 and the mounting platform 112 are movably connected, so that the relative position of the positioning seat 113 with respect to the measuring component 120 can be changed, so that the spacing detection device 100 can adapt to workpieces of different structures or sizes, and can detect more diverse objects, which is more convenient for the use of the spacing detection device 100 of the present application.

In some embodiments, the base 110 is provided with a plurality of positioning seats 113 , and the plurality of positioning seats 113 are all movably connected to the mounting platform 112 .

The design of multiple positioning seats 113 can provide positioning and support for various parts of the workpiece, which helps to ensure the accuracy of workpiece positioning. The multiple positioning seats 113 are all movably connected to the mounting platform 112, so that the relative positions between the multiple positioning seats 113 can be changed, and the spacing between the multiple positioning seats 113 can be adjusted, so that the positioning seats 113 can be applied to workpieces of different structures or sizes, which is more convenient for the spacing detection device 100 to use.

In some embodiments, as shown in FIG. 1 , two positioning seats 113 are provided, a slide groove 1131 is provided on the positioning seat 113, a slide rail 1121 is provided on the mounting platform 112, and the positioning seat 113 and the mounting platform 112 are slidably connected through the slide rail 1121 and the slide groove 1131. A bolt (not shown in the figure) is threadedly connected to the positioning seat 113, and the bolt passes through the positioning seat 113 and is located in the slide groove 1131. After tightening the bolt, the bolt abuts against the slide rail 1121, so that the positioning seat 113 is fixed and cannot slide further; after loosening the bolt, the bolt does not abut against the slide rail, and the positioning seat 113 can slide along the slide rail 1121. When the positioning seat 113 slides to a suitable position, the bolt can be loosened to make the positioning seat 113 movably connected to the mounting platform 112.

In some embodiments, the installation platform 112 is tilted, and the base 110 is provided with a plurality of positioning seats 113 , and the plurality of positioning seats 113 are sequentially arranged along the tilting direction of the installation platform 112 .

The measuring assembly 120 is installed on the mounting platform 112 . The mounting platform 112 is tilted so that the measuring meter 124 is tilted, which can facilitate the measuring personnel to observe the values displayed on the measuring meter 124 to a certain extent.

The positioning seat 113 is installed on the mounting platform 112 and multiple positioning seats 113 are arranged in sequence along the inclined direction, so that the workpiece 200 to be detected installed thereon is also arranged in an inclined manner. This design, on the one hand, can facilitate the installation of the workpiece 200 to be detected; on the other hand, the workpiece 200 to be detected is arranged in an inclined manner, and under the action of gravity, it has a tendency to move downward, which helps to make the reference surface 200a always in contact with the base 110, so that the workpiece 200 to be detected is accurately positioned to reduce the measurement error. As shown in Figure 1, in some embodiments, the workpiece 200 to be measured is a drive motor spindle. After the drive motor spindle is installed on the positioning portion 113a, under the action of gravity, the reference surface 200a of the drive motor spindle is always in contact with the end face of the positioning seat 113 located below toward the upper positioning seat 113.

In some embodiments, as shown in FIG. 1 and FIG. 2 , the positioning portion 113 a is a positioning groove, and the spacing detection device 100 further includes a rolling member 130 rotatably connected to the base 110 , and at least a portion of the rolling member 130 is located in the positioning groove.

After the rolling element 130 is set, the workpiece 200 to be inspected is located in the positioning groove and will contact the rolling element 130. If the workpiece 200 to be inspected is a rotating body, such as a driving motor spindle, the operator can rotate the workpiece 200 to be inspected around its axis to detect the dimensional error of the surface 200b to be inspected around one circle, so that more detection data can be obtained and the detection results can be more accurate and comprehensive.

As shown in FIG. 4 , in some implementations, two rolling members 130 are disposed opposite to each other in the positioning groove. The rolling member 130 is cylindrical, and its axis is parallel to the axis of the workpiece 200 to be detected. When the workpiece 200 to be detected rotates, its circumferential surface contacts the workpiece 200 to be detected.

In some embodiments, as shown in FIG1 , a plurality of measuring assemblies 120 are provided, and the plurality of measuring assemblies 120 are sequentially arranged along the length direction of the workpiece 200 to be inspected. For workpieces such as the main shaft of a driving motor, they have a plurality of surfaces 200 b to be inspected, and by providing a plurality of measuring assemblies 120 to respectively inspect these surfaces 200 b to be inspected, the inspection efficiency of the spacing inspection device 100 is further improved.

For example, in some implementations, as shown in FIG. 1 , the workpiece 200 to be inspected is a main shaft of a driving motor, which has three surfaces 200 b to be inspected. In these embodiments, three measuring components 120 are disposed on the spacing detection device 100 .

The types of the restoring member 123 are various, and it can be an elastic rubber block, a torsion spring, etc. In some embodiments, the restoring member 123 is a torsion spring, and the two ends of the torsion spring are respectively fixedly connected to the housing 121 and the lever 122. Under the action of the torsion spring, the lever 122 abuts against the workpiece 200 to be detected.

In some embodiments, as shown in Figure 4, the lever 122 and the bottom wall of the shell 121 are rotatably connected, and the return member is a torsion spring, which is sleeved on the rotation axis of the lever 122 and the shell 121, the upper end of the torsion spring is fixedly connected to the lever 122, and the lower end of the torsion spring is fixedly connected to the bottom wall of the shell 121.

In some embodiments, an alloy head is disposed at one end of the lever 122 for contacting the workpiece 200 to be inspected, and the lever 122 contacts the workpiece 200 to be inspected through the alloy head.

During the detection of the workpiece, the lever 122 contacts the workpiece 200 to be detected. Over time, the lever will gradually wear out, resulting in inaccurate detection. The alloy head is set to replace the lever 122 to contact the workpiece 200 to be detected. The alloy has the characteristics of high wear resistance, which helps to reduce the wear rate and increase the service life of the spacing detection device 100.

The following describes the detection principle of the spacing detection device 100 of the present application by taking the workpiece 200 to be detected as a driving motor spindle as an example:

Place the main shaft of the driving motor in the positioning groove, specifically, its upper side is located in the positioning groove of the upper positioning seat 113, and its lower side is located in the positioning groove of the lower positioning seat 113. Since the mounting platform 112 is tilted, the reference surface 200a of the main shaft of the driving motor on the lower side will fit with the end surface of the positioning seat 113 located at the lower side facing the upper positioning seat 113 to achieve precise positioning; under the action of the return member 123, the levers 122 of the three measuring components are respectively fitted with the three surfaces 200b to be detected on the upper side of the main shaft of the driving motor; read the values displayed on the three measuring tables 124 respectively, and judge whether the values meet the required range.

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims (10)

1. A pitch detection apparatus, comprising:

a base (110) provided with a positioning portion (113 a) for positioning the workpiece (200) to be inspected;

The measuring assembly (120) comprises a shell (121), a lever (122), a restoring piece (123) and a measuring meter (124), wherein the shell (121) is installed on the base (110), the measuring meter (124) is installed on the shell (121), the middle part of the lever (122) is rotationally connected with the shell (121), and the restoring piece (123) is connected with the lever (122) and the shell (121); one end of the lever (122) is contacted with a measuring head (1241) of the measuring meter (124) under the action of restoring force of the restoring piece (123), and the other end is used for being contacted with the workpiece (200) to be detected.

2. The distance detecting device according to claim 1, wherein the base (110) includes a base (111), a mounting platform (112) and a positioning seat (113), the mounting platform (112) is mounted on the base (111), the positioning seat (113) and the housing (121) are both mounted on the mounting platform (112), and the positioning portion (113 a) is disposed on the positioning seat (113).

3. The spacing detection device according to claim 2, characterized in that the positioning seat (113) is movably connected to the mounting platform (112).

4. The distance detecting device according to claim 2, wherein the base (110) is provided with a plurality of positioning seats (113), and a plurality of positioning seats (113) are movably connected to the mounting platform (112).

5. The pitch detection apparatus as defined in claim 4, wherein the mounting platform (112) is disposed obliquely, and a plurality of the positioning seats (113) are disposed sequentially along a direction in which the mounting platform (112) is inclined.

6. The pitch detection apparatus according to any one of claims 1 to 5, wherein the positioning portion (113 a) is a positioning groove.

7. The spacing detection device of claim 6, wherein the spacing detection device (100) further comprises a rolling element (130) rotatably coupled to the base (110), at least a portion of the rolling element (130) being located within the detent.

8. The pitch detection device according to any one of claims 1 to 5, wherein a plurality of measurement assemblies (120) are provided, the plurality of measurement assemblies (120) being disposed in order along a length direction of the workpiece (200) to be detected.

9. The distance detecting device according to any one of claims 1 to 5, wherein the return member (123) is a torsion spring, and both ends of the torsion spring are fixedly connected with the housing (121) and the lever (122), respectively.

10. The pitch detection apparatus according to any one of claims 1 to 5, wherein an end of the lever (122) for contacting the workpiece (200) to be detected is provided with an alloy head, and the lever (122) contacts the workpiece (200) to be detected through the alloy head.