CN217786055U

CN217786055U - Device for rapidly and accurately detecting depth of inner surface of object

Info

Publication number: CN217786055U
Application number: CN202221179670.0U
Authority: CN
Inventors: 荣洪霞; 霍永清; 陈一进; 巫志伟; 赵水蓉; 罗卫; 张忠虎; 高树华; 邱宏彬; 王法灵; 王建辉
Original assignee: Chongqing Jialing Special Equipment Co ltd
Current assignee: Chongqing Jialing Special Equipment Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-11-11
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a device for rapidly and accurately detecting the depth of the inner surface of an object, which comprises a dial indicator (6), an indicator seat (3) and a locking screw (5); the measuring rod of percentage table (6) inserts in the through-hole of gauge stand (3), and terminal surface is for measuring reference plane under gauge stand (3), and locking screw (5) set up in gauge stand (3) upper portion cylinder section for fasten gauge stand (3) on the measuring rod of percentage table (6). Because the utility model is provided with the gauge stand, the problem that the bottom plane of the outer shell is not parallel to the measuring reference plane of the inner shell of the dial indicator is effectively solved, and the measuring error is reduced; and the retraction length of the probe of the inner shell is measured only once to complete detection, repeated measurement is not needed, and the detection efficiency is improved.

Description

Device for rapidly and accurately detecting depth of inner surface of object

Technical Field

The utility model belongs to the technical field of machining, concretely relates to object internal surface degree of depth detection device.

Background

As shown in fig. 1, the press-fitting housing includes an outer housing 101 and an inner housing 102, and the inner housing 102 is fitted inside the outer housing 101. The inner housing press-fitting depth L is a depth at which the inner housing bottom plane is lower than the outer housing bottom plane after the inner housing 102 is press-fitted into the outer housing 101.

The press fitting process of the shell is a key process in shell assembly, the press-in depth size of the inner shell is a key size, and whether the press-in depth is qualified or not can influence the technical index of a product to a great extent, so that the accuracy of the press-in depth detection of the inner shell is particularly important. Usually, the press-in depth of the inner shell is detected by adopting a dial indicator depth gauge, and the detection mode mainly has the following defects:

1. manual detection is carried out by using a dial indicator depth gauge, and a measuring reference surface of a dial indicator base is attached to a reference surface of a bottom plane of the outer shell in parallel, so that the efficiency is low;

2. install traditional percentage table depth gauge on equipment and detect, because of there is normal dimensional tolerance in the shell body, the direction precision of percentage table base is poor, and percentage table base reference surface can not the parallel laminating with shell body baseplane reference surface during the measurement, has the gap, causes the location inaccurate, causes measuring error big.

3. The existing dial gauge depth gauge base does not completely absorb shock and do work; the influence of inertia effect and equipment vibration is utilized, and the measurement of the radial runout and vibration of the outer shell at the moment is large in initial disturbance on the measured value.

Based on the above disadvantages, the existing inner shell press-in depth detection device is not suitable for automatic press-in depth detection, and in order to improve the accuracy, rapidity and convenience of the press-in depth measurement of the inner shell of the object, it is necessary to develop an object inner surface depth detection device for use in a special device.

SUMMERY OF THE UTILITY MODEL

The problem to current interior casing degree of depth detection technique, the utility model aims to solve the technical problem that a device of the interior surface depth of object is exactly provided to quick accurate detection, and it can reduce to measure product runout and vibration in the twinkling of an eye, reduces the initial disturbance of measured value. The other purpose is to overcome the problem that the measuring reference surface of the base of the dial indicator cannot be parallel to the surface of the shell, so that the positioning is inaccurate, and the measuring error is large.

The technical scheme of the utility model is like this: the utility model provides a device for rapidly and accurately detecting the depth of the inner surface of an object, which comprises a dial indicator, an indicator seat and a locking screw; the measuring rod of the dial indicator is inserted into the through hole of the gauge stand, the lower end face of the gauge stand is a measuring reference plane, and the locking screw is arranged on the cylindrical section of the upper portion of the gauge stand.

Preferably, the periphery of the gauge stand is provided with a floating coupling structure, the floating coupling structure comprises a buffer spring and a positioning nut, the positioning nut is sleeved on an external thread section below a locking screw of the gauge stand in a rotating mode, the buffer spring is sleeved on a cylindrical section at the middle lower part of the gauge stand, the bottom end of the spring is pressed on a fixed connection body of the fixed connection equipment, and the top end of the spring is pressed on the lower part of the positioning nut.

Preferably, the solid connector is a spherical washer, the spherical washer is sleeved outside the inverted cone spherical surface at the lower part of the gauge stand, and the spherical washer is in sliding fit with the inverted cone spherical surface of the gauge stand.

The technical effects of the utility model are that:

1. because the utility model discloses installed buffer spring, the detection device who takes the percentage table is the floating body, and buffer spring plays the cushioning effect, has reduced and has measured product runout and vibration in the twinkling of an eye, has reduced the initial disturbance of measured value.

2. Because the utility model is provided with the gauge stand, the problem that the surface of the outer shell is not parallel to the measuring reference surface of the inner shell of the dial indicator is effectively solved, and the measuring error is reduced; and the retraction length of the probe on the inner surface is measured only once to complete the detection, repeated measurement is not needed, and the detection efficiency is improved.

Drawings

The drawings of the utility model are explained as follows:

FIG. 1 is a schematic illustration of detecting product location;

FIG. 2 is a schematic structural view of the utility model;

FIG. 3 is a schematic view of a watch base;

FIG. 4 is a schematic view of a spherical washer;

fig. 5 is an installation and use diagram of the present invention.

In the figure: 101. a housing; 102. primer; 1. a support; 2. a spherical washer; 3. a gauge stand; 4. positioning a nut; 5. locking the screw; 6. a dial indicator; 7. a buffer spring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, but it should not be understood that the scope of the present invention is limited to the following examples. Various substitutions and modifications can be made without departing from the technical spirit of the invention and according to the common technical knowledge and conventional means in the field, and all shall be included in the scope of the invention.

As shown in fig. 2 and 3, the utility model comprises a dial indicator 6, a gauge stand 3 and a locking screw 5; the measuring stick of percentage table 6 inserts in the through-hole of gauge stand 3, and the terminal surface is the measuring datum plane under the gauge stand 3, and locking screw 5 sets up in 3 upper portion cylinder sections of gauge stand for fasten gauge stand 3 on the measuring stick of percentage table 6. The probe of the measuring rod of the dial indicator 6 is a cylinder.

The utility model discloses a measuring method is: the gauge stand 3 is adjusted so that the probe of the measuring rod is exposed from the measuring reference plane of the gauge stand 3 by a length L1. Before measurement, a standard sample plate (a straight plate) is attached to a measuring reference plane tightly abutting against the gauge stand 3, and the probe of the dial indicator retracts to be L1.

As shown in fig. 5, during the measurement, the utility model discloses a measuring device wholly moves down and compresses tightly shell body 101 baseplane, and 3 measurement reference planes of gauge stand laminate with shell body 101 baseplane this moment, and the probe inserts interior casing 102 baseplane this moment, and it contracts length note L2, then can calculate out interior casing depth of impressing L = L1-L2.

The dial indicator 6 is preferably a digital display dial indicator. The digital display dial indicator 6 can visually observe the detection value, when the head of the digital display dial indicator contacts the inner shell, the compression distance of the probe accurately judges whether the pressing depth of the inner shell meets the specified requirement, and the detection result is recorded into a system for recording and analyzing.

As shown in fig. 3, the gauge stand 3 is composed of an upper cylindrical section, a middle large cylindrical section and a lower inverted cone section, the upper cylindrical section is provided with a mounting hole for a locking screw 5, a thread for a positioning nut 4 to be sleeved is arranged above the middle large cylindrical section, the bottom surface of the lower inverted cone is a measurement reference plane, and the central part is provided with a through hole for inserting a measuring rod.

As shown in fig. 2 and 3, a floating coupling structure is installed on the periphery of the gauge stand 3, the floating coupling structure includes a buffer spring 7 and a positioning nut 4, the positioning nut 4 is screwed on an external thread section below the locking screw 5 of the gauge stand 3, the buffer spring 7 is sleeved on a large cylindrical section in the middle of the gauge stand 3, the bottom end of the spring is pressed against a fixed body of the fixed connection device, and the top end of the spring is pressed against the lower part of the positioning nut 4.

Because the buffer spring 7 is additionally arranged, the detection device with the dial indicator 6 is a floating body, the buffer spring has a damping effect, the radial runout and vibration of a product in the moment of measurement are weakened, and the initial disturbance of a measured value is eliminated.

As shown in fig. 2, 4 and 5, the solid connection body is a spherical washer 2, the spherical washer 2 is fixedly connected to the support 1 through threads, the spherical washer 2 is sleeved outside the inverted cone spherical surface at the lower part of the gauge stand 3, the spherical washer 2 is in sliding fit with the inverted cone spherical surface of the gauge stand 3, and the contact rate is greater than 80%. The spherical surface matching is adopted for the following functions: when the bottom plane of the gauge stand 3 contacts the product plane, the measuring reference plane can be adjusted along with the product plane, and the problem that the measuring reference plane of the dial indicator on the traditional equipment is not parallel to the bottom plane of the product can be solved through the spherical rotation of the gauge stand 3.

Because the gauge stand 3 is in sliding fit with the spherical washer 2, the detection device for detecting the press-in depth of the inner shell can rotate to adjust the reference surface, thereby effectively solving the problem that the bottom plane of the outer shell 101 is not parallel to the inner shell measurement reference surface of the dial indicator and reducing the size misjudgment rate; and the retraction length L2 of the probe of the inner shell 102 is measured only once to complete detection, repeated measurement is not needed, the detection efficiency is improved, and the operation is simple.

As shown in fig. 5, the support 1 is fixed on the detection equipment of the production line, and the spherical washer 2 is fixed in the bottom through hole of the support 1. Press downwards the utility model discloses a measuring device can detect the degree of depth of impressing of 1 below transmission product internal surface of support. And automatic detection is realized through linkage control.

The utility model has the advantages that:

1. the problem that the bottom plane of the outer shell is not parallel to the inner shell detection reference plane of the dial indicator is effectively solved, and the size misjudgment rate (the qualified product is measured to be unqualified) is reduced.

2. Simple structure, low cost and high cost-effectiveness ratio.

3. Compared with the prior art, the detection device is positioned in a floating mode, the buffer spring absorbs shock and energy, radial runout and vibration of the cartridge case at the moment of measurement are weakened, and initial disturbance of the measured value is eliminated.

4. The detection efficiency is improved, the operation is simple, the detection is completed once, and repeated measurement is not needed.

5. The accuracy, stability and reliability of the depth dimension detection of the inner surface of the object are improved, the depth dimension detection device can be widely used for detecting the depth dimensions of various parts, and the universality is good.

Claims

1. The utility model provides a device of quick accurate detection object internal surface degree of depth, includes percentage table (6), characterized by: the watch also comprises a watch seat (3) and a locking screw (5); the measuring rod of percentage table (6) inserts in the through-hole of gauge stand (3), and terminal surface is for measuring reference plane under gauge stand (3), and locking screw (5) set up in gauge stand (3) upper portion cylinder section for fasten gauge stand (3) on the measuring rod of percentage table (6).

2. The apparatus for detecting the depth of an inner surface of an object according to claim 1, wherein: the gauge stand (3) is composed of an upper cylindrical section, a middle large cylindrical section and a lower inverted cone section, the upper cylindrical section is provided with a mounting hole for a locking screw (5), a thread sleeved with a positioning nut (4) is arranged above the middle large cylindrical section, the bottom surface of the lower inverted cone is a measuring reference plane, and the central part of the lower inverted cone is provided with a through hole for inserting a measuring rod.

3. The apparatus of claim 2, wherein the apparatus further comprises: the periphery of gauge stand (3) is equipped with unsteady coupling structure, unsteady coupling structure includes buffer spring (7) and set nut (4), and set nut (4) are revolved the external screw thread section of cover in the locking screw (5) below of gauge stand (3), and buffer spring (7) suit is in the big cylinder section in gauge stand (3) middle part, and the spring bottom supports and presses on the solid conjuncted body of fixed connection equipment, and the spring top is pressed in set nut (4) lower part.

4. The apparatus of claim 3, wherein the apparatus further comprises: the solid connector is a spherical gasket (2), the spherical gasket (2) is sleeved outside an inverted cone spherical surface at the lower part of the gauge stand (3), and the spherical gasket (2) is in sliding fit with the inverted cone spherical surface of the gauge stand (3).

5. The apparatus for detecting the depth of the inner surface of an object according to any one of claims 1 to 4, wherein: the probe of the measuring rod of the dial indicator (6) is a cylinder, and the dial indicator (6) is a digital display dial indicator.