CN101726234A - Precise detector for center hole at shaft end - Google Patents
Precise detector for center hole at shaft end Download PDFInfo
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- CN101726234A CN101726234A CN200810155652A CN200810155652A CN101726234A CN 101726234 A CN101726234 A CN 101726234A CN 200810155652 A CN200810155652 A CN 200810155652A CN 200810155652 A CN200810155652 A CN 200810155652A CN 101726234 A CN101726234 A CN 101726234A
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- hole
- dial gauge
- positioning seat
- place kick
- measuring head
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a precise detector for a center hole at a shaft end, which comprises an expanded screw plug, a positioning seat, an end cover, a dial gauge, a measuring head, positioning balls and steel balls, wherein an axial through hole at the middle part of the expanded screw plug is inserted into a gauge rod of the dial gauge; external taper threads of the expanded screw plug and internal taper threads of the positioning seat are used for locking the gauge rod of the dial gauge; the measuring head is fixed on the gauge rod; the downward end part of the measuring head is a plane; after the positioning balls are put in taper through holes which are uniformly distributed on the end cover, the end cover is fixedly connected with the bottom end of the positioning seat; and the bottom end of the measuring head is positioned in the through hole at the middle part of the end cover. In the measuring process, the positioning balls are used as the reference, the measuring head is directly in point contact with the steel balls arranged in the center hole at the shaft end, the measuring head which moves upwards enables the pointer of the dial gauge to deflect, and then, the error value can be judged by reading the difference of the indicated value and the normal value of the dial gauge. The precise detector of the invention has simple, quick and precise detection processes and is suitable for on-line detection.
Description
Technical field
The present invention relates to a kind of length class cubing, particularly a kind of cubing of online precision measurement axle head center pit.
Background technology
Center pit is the axial reference of axial workpiece machine cut processing.Before machine cut working shaft-like part, to process center pit at axle head earlier, center pit depth dimensions precision directly influences the machining precision of axle, is the axle of positioning reference with the center pit particularly, relies on the precision of center pit in following process fully.Prior art adopts height vernier calliper or depth vernier gage to cooperate steel ball to make axle head center pit depth dimensions accuracy detection, and the general cubing of this kind can accurately be measured, but detection efficiency is low, and the online cubing of using is produced in uncomfortable cooperation in batches.
Summary of the invention
The present invention is primarily aimed at the deficiencies in the prior art, proposes the accurate cubing of a kind of axle head center pit simple in structure, that detection efficiency is high, and this cubing is easy to detect, accurate, is particularly suitable for producing in batches the cubing of on-line measurement axle head center pit depth dimensions.
The present invention is achieved through the following technical solutions technical goal.
The accurate cubing of axle head center pit, it comprises swelling plug screw, positioning seat, end cap, dial gauge, amount head, place kick and steel ball.Its improvements are: described swelling plug screw is a flange-like, flange periphery annular knurl, and the taper thread section is provided with shaft orientation opening groove down, and the middle part axially extending bore inserts the table bar of dial gauge.Described positioning seat is the pipe box structure, and inside tapered thread hole, upper end and swelling plug screw lock dial gauge, and the amount head directly is fixedly set on the table bar of dial gauge.Described end cap is a plate-like, and the middle part is provided with through hole, and the uniform through hole of end face is fixedlyed connected with the positioning seat bottom after the uniform through hole enclosure place kick of end cap end face again.
Measure in the said structure upside down that the end is the plane, contact with axle head with the place kick of the end cap enclosure, move on the steel ball pushing tow amount head in the axle head center pit, the amount of movement of amount head is indicated by dial gauge, and the difference of dial gauge indicating value and design load is error amount.
The present invention compared with prior art has following good effect:
1, by the direct value indication measurement of dial gauge value, intuitive measurement results;
2, the amount head contacts with steel ball point with the plane, and measurement sensitivity is good, the efficiency of measurement height;
3, be positioning reference with uniform place kick, measuring basis is unified, and measuring error is little;
4, simple in structure, easy to manufacture.
Description of drawings
Accompanying drawing is a structural profile synoptic diagram of the present invention.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
Axle head center pit precision cubing shown in the drawings, it comprises swelling plug screw 1, positioning seat 2, end cap 3, dial gauge 4, amount 5, place kick 6 and steel ball 7.Described swelling plug screw 1 middle part axially extending bore inserts the table bar of dial gauge 4, cooperates with positioning seat 2 inside tapered thread holes with the outer cone thread of swelling plug screw 1, owing to swelling plug screw 1 thread segment is provided with shaft orientation opening groove, screws the table bar of promptly locking dial gauge 4.Amount 5 directly is fixedly set on the table bar of dial gauge 4, and amount 5 is the plane towards the bottom.Described end cap 3 thickness are less than the diameter of place kick 6, and the middle part is provided with the through hole greater than amount 5 a bottom diameter, the uniform tapering through hole of the end face of end cap 3, and the hole upper end diameter is greater than the diameter of place kick 6, and the hole lower end diameter is less than place kick 6 diameters.After in the uniform tapering through hole of end cap 3, putting place kick 6, fixedly connected with positioning seat 2 bottoms again.In the present embodiment, uniform 3 the tapering through holes of end cap 3 end faces that 4mm is thick are put φ 5mm place kick 6 respectively, and tapering through hole upper end diameter is φ 6mm, and lower end diameter is φ 4mm, and place kick 6 is by free to rotate behind the enclosure.The axle head center pit of actual measurement is φ 4mm, in center pit, put φ 8mm steel ball 7, contact formation plane surveying benchmark with axle head with 3 place kick 6, by steel ball 7 direct pushing tow amounts 5, on an amount of moving 5 make dial gauge 4 be in the pointer generation equivalent deflection of zero-bit, the indicated value by reading dial gauge 4 and the difference of standard value are come the decision errors value.
The present invention forms a measuring basis plane with 3 place kick 6, and throughput 5 contact with the point of steel ball 7 and makes the dial gauge 4 indicators indication measurement result that deflects, and quantizes indication and detects data, and is directly perceived, whole testing process is simple, fast, accurate.
Claims (3)
1. the accurate cubing of an axle head center pit, it comprises swelling plug screw (1), positioning seat (2), end cap (3), dial gauge (4), amount head (5), place kick (6) and steel ball (7); It is characterized in that: described swelling plug screw (1) is flange-like, flange periphery annular knurl, and the taper thread section is provided with shaft orientation opening groove down, and the middle part axially extending bore inserts the table bar of dial gauge (4); Described positioning seat (2) is the pipe box structure, and inside tapered thread hole, upper end and swelling plug screw (1) lock dial gauge (4), and amount head (5) directly is fixedly set on the table bar of dial gauge (4); Described end cap (3) is a plate-like, and the middle part is provided with through hole, and the uniform through hole of end face is fixedlyed connected with positioning seat (2) bottom after the uniform through hole enclosure place kick (6) of end cap (3) end face again.
2. the accurate cubing of axle head center pit according to claim 1, it is characterized in that: described amount head (5) is the plane towards the bottom.
3. the accurate cubing of axle head center pit according to claim 1, it is characterized in that: described end cap (3) thickness is less than the diameter of place kick (6), uniform 3～5 through holes of end face are taper hole, and the hole upper end diameter is greater than the diameter of place kick (6), and the hole lower end diameter is less than place kick 6 diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155652A CN101726234A (en) | 2008-10-10 | 2008-10-10 | Precise detector for center hole at shaft end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810155652A CN101726234A (en) | 2008-10-10 | 2008-10-10 | Precise detector for center hole at shaft end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101726234A true CN101726234A (en) | 2010-06-09 |
Family
ID=42447482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810155652A Pending CN101726234A (en) | 2008-10-10 | 2008-10-10 | Precise detector for center hole at shaft end |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101726234A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305584A (en) * | 2011-08-25 | 2012-01-04 | 芜湖禾田汽车工业有限公司 | Spherical center depth detection apparatus of automobile control arm ball and detection method thereof |
| CN102679849A (en) * | 2012-06-06 | 2012-09-19 | 芜湖永裕汽车工业有限公司 | Depth detection device of valve spring seat holes of engine cylinder covers and detection method thereof |
| CN102829700A (en) * | 2012-08-30 | 2012-12-19 | 无锡易通精密机械股份有限公司 | Measuring tool for checking central hole of roller |
| CN103486943A (en) * | 2013-09-12 | 2014-01-01 | 浙江吉利控股集团有限公司 | Taper hole depth detecting device |
-
2008
- 2008-10-10 CN CN200810155652A patent/CN101726234A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305584A (en) * | 2011-08-25 | 2012-01-04 | 芜湖禾田汽车工业有限公司 | Spherical center depth detection apparatus of automobile control arm ball and detection method thereof |
| CN102679849A (en) * | 2012-06-06 | 2012-09-19 | 芜湖永裕汽车工业有限公司 | Depth detection device of valve spring seat holes of engine cylinder covers and detection method thereof |
| CN102829700A (en) * | 2012-08-30 | 2012-12-19 | 无锡易通精密机械股份有限公司 | Measuring tool for checking central hole of roller |
| CN103486943A (en) * | 2013-09-12 | 2014-01-01 | 浙江吉利控股集团有限公司 | Taper hole depth detecting device |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100609 |