CN113124729A - A verifying attachment for work piece bottom surface discrepancy in elevation inspection - Google Patents
A verifying attachment for work piece bottom surface discrepancy in elevation inspection Download PDFInfo
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- CN113124729A CN113124729A CN201911395198.7A CN201911395198A CN113124729A CN 113124729 A CN113124729 A CN 113124729A CN 201911395198 A CN201911395198 A CN 201911395198A CN 113124729 A CN113124729 A CN 113124729A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- General Physics & Mathematics (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention relates to a checking device for checking the height difference of the bottom surface of a workpiece, which comprises a bottom plate, wherein a fixed block is vertically and fixedly arranged in the middle of the bottom plate, and dial indicators are movably arranged on two sides of the bottom plate; a plurality of limit cavities which are symmetrical across the middle are formed in the inspection table, and inspection units are axially and slidably connected in the limit cavities; the two ends of the inspection unit axially penetrate through the inspection table, the bottom of the inspection unit is pressed against the detection end of the dial indicator, and the tops of the inspection units elastically support the workpiece to be inspected. The checking device can conveniently and quickly check the height difference between the workpiece reference plane and the workpiece protruding part, the detection precision is high, and the detection efficiency is obviously improved compared with the manual detection by adopting a vernier caliper or a micrometer.
Description
Technical Field
The invention relates to the technical field of mechanical tools, in particular to a detection device for detecting the height difference of the bottom surface of a workpiece.
Background
In the field of workpiece machining with high precision requirements, the dimensional precision of each part of a workpiece needs to be checked after machining is finished, particularly the relative height difference between a certain plane of the workpiece and a certain protruding part of the workpiece is commonly checked, a reference plane of the workpiece or the highest point of the protruding part of the workpiece needs to be fixed in the detection process, and the height difference distance between the reference plane and the protruding part of the workpiece is measured by a vernier caliper or a micrometer after the reference plane and the protruding part of the workpiece are fixed.
However, due to different manual experiences, height difference data detected by a vernier caliper or a micrometer often has a large error, and under the condition that whether a workpiece reference plane is a standard plane is unknown, the reliability of the data detected by the vernier caliper or the micrometer often cannot meet the precision requirement of the workpiece, and the detection efficiency of the vernier caliper or the micrometer is low, so that the method is not suitable for large-batch height difference detection of the workpiece.
Through published patent search, no relevant comparison documents are found.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the inspection device for inspecting the height difference of the bottom surface of the workpiece, the inspection device can conveniently and quickly inspect the height difference between the reference plane of the workpiece and the protruding part of the workpiece, the inspection precision is high, and the inspection efficiency is obviously improved compared with that of manual inspection by adopting a vernier caliper or a micrometer.
The utility model provides an inspection device for work piece bottom surface discrepancy in elevation inspection which characterized in that: the device comprises a bottom plate, wherein a fixed block is vertically and fixedly arranged in the middle of the bottom plate, and dial indicators are movably arranged on two sides of the bottom plate; a plurality of limit cavities which are symmetrical across the middle are formed in the inspection table, and inspection units are axially and slidably connected in the limit cavities; the two ends of the inspection unit axially penetrate through the inspection table, the bottom of the inspection unit is pressed against the detection end of the dial indicator, and the tops of the inspection units elastically support the workpiece to be inspected.
The inspection unit comprises an inspection rod and a return spring, wherein the inspection rod axially penetrates and is connected to the inspection table in a sliding manner, and the middle part of the inspection rod is provided with a limit ring which is axially matched with the inner wall of the limit cavity in a sliding manner; the reset spring is sleeved on the check rod, and two ends of the reset spring are respectively and elastically supported on the bottom surface of the limiting ring and the inner wall of the limiting cavity.
And a plurality of bottom limiting rods are fixedly arranged on the bottom plate below the inspection platform, and the bottom limiting rods are respectively and coaxially arranged with the inspection unit.
And the middle top surface of the inspection table is provided with a yielding blind hole for providing a descending space for the protruding part of the bottom surface of the workpiece.
The invention has the advantages and technical effects that:
1. the inspection device for inspecting the bottom surface height difference of the workpiece supports an inspection unit through a bottom plate, a fixing block and an inspection bench, provides an inspection position for the workpiece to be inspected, measures the downlink displacement of the inspection unit through a dial indicator, limits the maximum downlink displacement of the inspection unit through a bottom limiting rod, positions a protruding part of the workpiece to be inspected through an abdicating blind hole, limits the axial maximum displacement of the protruding part, and avoids the radial swing of the workpiece to be inspected; and finally, the top of the check rod of the check unit supports the workpiece to be checked, the bottom of the check rod is pressed against the check end of the dial indicator, the downward displacement of the check rod is convenient to measure, the radial displacement of the check rod is limited by the limiting cavity and is axially and slidably connected with the check rod, and the check rod is supported by the reset spring in a buffering manner and provides reset supporting force for the check rod.
2. This an inspection device for work piece bottom surface discrepancy in elevation inspection has effectively reduced the location degree of difficulty of the inspection of work piece bottom surface discrepancy in elevation, has avoided the artificial measuring error that adopts slide caliper or micrometer to cause, only need the handheld work piece of examining of people to push down the work piece to extreme position on the checkout stand top surface, then observe the percentage table reading can, detection efficiency and detection precision all obviously are higher than the detection method who adopts slide caliper or micrometer, are the inspection device who is used for work piece bottom surface discrepancy in elevation inspection who has higher creativity.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a side view of the present invention;
fig. 3 is a partially enlarged view of a portion a in fig. 2.
Description of the reference numerals
1-dial indicator; 2-dial indicator support; 3, fixing blocks; 4-a workpiece to be detected; 5-a test bench; 6-a bottom limiting rod; 7-a bottom plate; 8-abdicating the blind hole; 9-a check rod; 10-a spacing ring; 11-a limiting cavity; 12-a return spring.
Detailed Description
For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are to be considered in conjunction with the accompanying drawings. It should be noted that the present embodiment is illustrative, not restrictive, and the scope of the invention should not be limited thereby.
The utility model provides an inspection device for work piece bottom surface discrepancy in elevation inspection which innovation lies in: the device comprises a bottom plate 7, wherein a fixed block 3 is vertically and fixedly arranged in the middle of the bottom plate, and dial indicators 1 are movably arranged on two sides of the bottom plate; a test bench 5 extends out of one side of the fixed block, a plurality of limit cavities 11 which are symmetrical across the middle are formed in the test bench, and test units are axially connected in the limit cavities in a sliding manner; the two ends of the inspection unit axially penetrate through the inspection table, the bottom of the inspection unit is pressed against the detection end of the dial indicator, and the tops of the inspection units elastically support the workpiece to be inspected.
The inspection unit comprises an inspection rod 9 and a return spring 12, wherein the inspection rod axially penetrates and is connected to the inspection table in a sliding manner, and the middle part of the inspection rod is provided with a limit ring 10 which is axially matched with the inner wall of the limit cavity in a sliding manner; the reset spring is sleeved on the check rod, and two ends of the reset spring are respectively and elastically supported on the bottom surface of the limiting ring and the inner wall of the limiting cavity.
A plurality of bottom limiting rods 6 are fixedly arranged on the bottom plate below the inspection table, and the bottom limiting rods are respectively and coaxially arranged with the inspection units.
And an abdicating blind hole 8 for providing a descending space for the protruding part of the bottom surface of the workpiece is formed on the top surface of the middle part of the inspection table.
In addition, the invention is preferable that the dial indicator bracket 2 in the prior art is rotatably arranged on two sides of the top surface of the bottom plate, the inspection end of the dial indicator bracket is supported on the bottom surface of the inspection rod in a matching way, and the dial indicator is fixedly arranged on the dial indicator bracket.
In addition, the invention is preferable that the middle part of the bottom surface of the workpiece 4 to be detected is provided with a protruding part which is in clearance fit with the inside of the abdicating blind hole, and the height of the protruding part is consistent with the depth of the abdicating blind hole.
To more clearly illustrate the embodiments of the present invention, an example is provided below:
according to the inspection device for inspecting the height difference of the bottom surface of the workpiece, the workpiece to be inspected only needs to be manually held in the inspection process, the protruding portion of the workpiece to be inspected is limited and pressed downwards into the abdicating blind hole, the reference planes on the two sides of the protruding portion are pressed on the top surface of the inspection rod and provide a downward force for the inspection rod, after the bottom surface of the protruding portion is pressed on the inner wall of the hole bottom of the abdicating hole, the downward displacement of the inspection rod is respectively detected by the two dial indicators, and at the moment, whether the degrees of the two dial indicators are consistent and are both designed displacement values is respectively observed; after the inspection of one workpiece is finished, taking the workpiece out of the abdicating hole; at the moment, the return spring supports the inspection rod to move upwards until the top end of the inspection rod extends out of the inspection table, and the top surface of a limiting ring on the inspection rod is attached to the inside of the top of the limiting cavity; it should be noted that the bottom limit rod uses a limit rod which can be adjusted up and down in the prior art, and the bottom limit rod is used for controlling the maximum downward displacement of the check rod. The inspection device for inspecting the height difference of the bottom surface of the workpiece has high inspection speed, and the inspection precision is obviously higher than that of vernier caliper and micrometer caliper inspection.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (4)
1. The utility model provides an inspection device for work piece bottom surface discrepancy in elevation inspection which characterized in that: the device comprises a bottom plate, wherein a fixed block is vertically and fixedly arranged in the middle of the bottom plate, and dial indicators are movably arranged on two sides of the bottom plate; a plurality of limit cavities which are symmetrical in span are formed in the inspection table, and the limit cavities are axially and slidably connected with inspection units; the two ends of the inspection unit axially penetrate through the inspection table, the bottom of the inspection unit is pressed against the detection end of the dial indicator, and the tops of the inspection units elastically support the workpiece to be inspected.
2. An inspection apparatus for inspection of the elevation difference of the bottom surface of a workpiece according to claim 1, wherein: the inspection unit comprises an inspection rod and a return spring, wherein the inspection rod axially penetrates and is connected to the inspection table in a sliding mode, and a limit ring in axial sliding fit with the inner wall of the limit cavity is arranged in the middle of the inspection rod; the reset spring is sleeved on the check rod, and two ends of the reset spring are respectively and elastically supported on the bottom surface of the limiting ring and the inner wall of the limiting cavity.
3. An inspection apparatus for inspection of the elevation difference of the bottom surface of a workpiece according to claim 1, wherein: and a plurality of bottom limiting rods are fixedly arranged on the bottom plate below the inspection platform, and the bottom limiting rods are respectively and coaxially arranged with the inspection unit.
4. An inspection apparatus for inspection of the elevation difference of the bottom surface of a workpiece according to claim 1, wherein: and an abdicating blind hole for providing a descending space for the protruding part of the bottom surface of the workpiece is formed in the top surface of the middle part of the inspection table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395198.7A CN113124729A (en) | 2019-12-30 | 2019-12-30 | A verifying attachment for work piece bottom surface discrepancy in elevation inspection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395198.7A CN113124729A (en) | 2019-12-30 | 2019-12-30 | A verifying attachment for work piece bottom surface discrepancy in elevation inspection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113124729A true CN113124729A (en) | 2021-07-16 |
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ID=76767675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911395198.7A Pending CN113124729A (en) | 2019-12-30 | 2019-12-30 | A verifying attachment for work piece bottom surface discrepancy in elevation inspection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113124729A (en) |
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2019
- 2019-12-30 CN CN201911395198.7A patent/CN113124729A/en active Pending
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