CN203657656U - Detection device capable of eliminating shaft and hole positioning clearance - Google Patents
Detection device capable of eliminating shaft and hole positioning clearance Download PDFInfo
- Publication number
- CN203657656U CN203657656U CN201320809508.7U CN201320809508U CN203657656U CN 203657656 U CN203657656 U CN 203657656U CN 201320809508 U CN201320809508 U CN 201320809508U CN 203657656 U CN203657656 U CN 203657656U
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- Prior art keywords
- positioning key
- positioning
- mandrel body
- hole
- core shaft
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- Expired - Lifetime
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- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 238000003754 machining Methods 0.000 claims description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a detection device capable of eliminating a shaft and hole positioning clearance. According to the structure, a groove is arranged on one side of the axis of a cylindrical part at the lower part of a core shaft body; two positioning pins are arranged in the groove; the top and the bottom of a positioning key are respectively provided with a long horizontal round hole; the positioning key is placed into the groove and are assembled with the core shaft body through the positioning pins; and the positioning key can move along the radial direction of the core shaft body. The bottom of the positioning key is jacked up by two piece springs, so that the positioning key is close to a detection positioning hole. A dial indicator is inserted into the upper end of the core shaft body through an open bush, and is fastened with the core shaft body through a jackscrew. A steel ball is adhered and fixed on the bottom end of the core shaft body as a fulcrum of the rotating of a gauge. When detection is carried out, the detection device is placed into a race of a cylinder head; the lower end of the core shaft body is inserted into a reference hole of the race; a pointer of the dial indicator contacts a cone face of the race; through two piece springs at the bottom of the positioning key, the positioning key is close to the detection positioning hole; the uniqueness of error detection is ensured; and the time for an operator to frequently replace and select the core shaft is reduced.
Description
Technical field
The utility model belongs to engine component cubing, is specifically related to a kind of pick-up unit that can eliminate axle and hole positioning gap.
Background technology
The seat ring conical surface in engine cylinder cap and the relative positional accuracy of valve guide hole are very large to the performance impact of engine.In process of production, need to detect rapidly and accurately this site error, to guarantee cylinder head product quality.The seat ring conical surface to different runout errors detects, the mandrel that the locating shaft of cubing adopts one group of different gap to coordinate conventionally, and select the mandrel adapting to detect the runout error of seat ring by actual valve guide hole footpath.When detection, mandrel is inserted in hole motionless, the test bench on mandrel and mandrel relative motion.The detection gauge head being fixed on test bench contacts with the conical surface, the tiltedly upper end in contact dial gauge (gauge head) of test bench.The size that detects gauge head displacement on test bench can reflect indirectly by dial gauge, realizes thus the detection that the counter race conical surface is beated.Owing to still having gap between the mandrel of selecting and pilot hole, so often because the positioning gap of locating shaft and the linearity problem of axle, cause measuring inaccurate, duplicate measurements error is more than 2 times.This detection mode causes larger impact to the quality of product, and therefore measuring exactly beating of the seat ring conical surface and valve guide hole becomes a difficult problem for quality control.
Summary of the invention
The purpose of this utility model is, the pick-up unit that provides one can eliminate (the ring of cylinder head conical surface beat cause) axle and hole positioning gap guarantees the consistance of measuring error.
For realizing the technical scheme that the utility model object takes be: a side of mandrel body lower cylindrical segment axis has a groove, in groove, be provided with two register pins, positioning key respectively has the circular hole of growing crosswise up and down, positioning key is inserted in groove and is fitted together by register pin and mandrel body, and positioning key can move radially along mandrel body.The bottom of positioning key, by two flat spring jack-up, makes positioning key be close to detection and location hole.Dial gauge inserts mandrel body upper end by broached bushing, fastening by jackscrew and mandrel body, the bottom of the mandrel body fulcrum of a steel ball while rotating as cubing that be adhesively fixed.
This pick-up unit is installed a positioning key on mandrel body, and the bottom of positioning key is promoted by two flat springs respectively, guarantees to be close to detection and location hole, eliminates the gap in mandrel body and detection and location hole.
The beneficial effect of feature of the present utility model and generation is: simple in structure, location is reliable, two flat springs by positioning key bottom make positioning key be close to detection and location hole, guarantee the uniqueness of error-detecting, also alleviated frequent labour intensity and the working time of changing and selecting mandrel of operator simultaneously.
Accompanying drawing explanation
Fig. 1 is the utility model theory structure sketch.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is example structure schematic diagram of the present utility model.
Embodiment
Referring to accompanying drawing and by specific embodiment, principle of the present utility model and structure are further described.The pick-up unit that can eliminate axle and pilot hole gap comprises: mandrel body, register pin, positioning key, flat spring, dial gauge, broached bushing, jackscrew and steel ball etc.Its structure is: a side of mandrel body 1 lower cylindrical segment axis has a groove, in groove, be provided with two register pins 2, positioning key 3 respectively has the circular hole of growing crosswise up and down, and positioning key is inserted in groove and fitted together by register pin and mandrel body, and positioning key can move radially along mandrel body.The bottom of positioning key, by two flat spring 4 jack-up, makes positioning key be close to detection and location hole.Dial gauge 5 inserts mandrel body upper end by broached bushing 6, fastening by jackscrew 7 and mandrel body, the bottom of the mandrel body fulcrum (as Fig. 1 Fig. 2) of a steel ball 8 while rotating as cubing that be adhesively fixed.For make cubing rotate time anti-skidding, in mandrel body upper end, Excircle machining has annular knurl.
When detection, this pick-up unit is put into the seat ring 9 of engine cylinder cap, the lower end of mandrel body is inserted to the datum hole of seat ring, the indicator of dial gauge contacts with the seat ring conical surface just.Take the steel ball of mandrel body bottom as fulcrum, mandrel body is rotated a circle, maximum and minimal difference that dial gauge shows, be the runout error of the conical surface to datum hole.
The detection that this pick-up unit is beated to the QD32 type diesel engine cylinder cover seat ring conical surface, due to the gap of substantially having eliminated between axle and pilot hole, so guaranteed the uniqueness of measuring error, effect is very good, has also saved the running time simultaneously.
Claims (2)
1. can eliminate the pick-up unit of axle and hole positioning gap, comprise mandrel body, register pin, positioning key, flat spring, dial gauge, broached bushing, jackscrew and steel ball, it is characterized in that: a side of mandrel body (1) lower cylindrical segment axis has a groove, in groove, be provided with two register pins (2), positioning key (3) respectively has the circular hole of growing crosswise up and down, positioning key is inserted in groove and is fitted together by register pin and mandrel body, positioning key can move radially along mandrel body, the bottom of positioning key is by two flat springs (4) jack-up, make positioning key be close to detection and location hole, dial gauge (5) inserts mandrel body upper end by broached bushing (6), fastening by jackscrew (7) and mandrel body, the bottom of the mandrel body fulcrum of a steel ball (8) while rotating as cubing that be adhesively fixed.
2. according to the pick-up unit that can eliminate axle and hole positioning gap claimed in claim 1, it is characterized in that described mandrel body (1) upper end Excircle machining has annular knurl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809508.7U CN203657656U (en) | 2013-12-10 | 2013-12-10 | Detection device capable of eliminating shaft and hole positioning clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320809508.7U CN203657656U (en) | 2013-12-10 | 2013-12-10 | Detection device capable of eliminating shaft and hole positioning clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203657656U true CN203657656U (en) | 2014-06-18 |
Family
ID=50924034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320809508.7U Expired - Lifetime CN203657656U (en) | 2013-12-10 | 2013-12-10 | Detection device capable of eliminating shaft and hole positioning clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203657656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607698A (en) * | 2017-10-18 | 2018-01-19 | 深圳乐普智能医疗器械有限公司 | A kind of image collecting device and there is its body fluid cell analyzer |
-
2013
- 2013-12-10 CN CN201320809508.7U patent/CN203657656U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607698A (en) * | 2017-10-18 | 2018-01-19 | 深圳乐普智能医疗器械有限公司 | A kind of image collecting device and there is its body fluid cell analyzer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Detection device capable of eliminating shaft and hole positioning clearance Effective date of registration: 20190612 Granted publication date: 20140618 Pledgee: LINGYUAN IRON & STEEL GROUP CO.,LTD. Pledgor: DONGFENG CHAOYANG DIESEL Co.,Ltd. Registration number: 2019210000021 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |