CN207344264U - Cylinder zooms cam machining precision detection device - Google Patents
Cylinder zooms cam machining precision detection device Download PDFInfo
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- CN207344264U CN207344264U CN201721085069.4U CN201721085069U CN207344264U CN 207344264 U CN207344264 U CN 207344264U CN 201721085069 U CN201721085069 U CN 201721085069U CN 207344264 U CN207344264 U CN 207344264U
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- 238000001514 detection method Methods 0.000 title abstract description 17
- 238000003754 machining Methods 0.000 title abstract description 3
- 238000005259 measurement Methods 0.000 claims description 46
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 3
- 239000000523 sample Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000036461 convulsion Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to a cylinder zooms cam machining precision detection device. The device comprises a lathe, a six-degree-of-freedom adjusting tool, an indexing dial, a measuring shaft and a measuring gauge; the six-degree-of-freedom adjusting tool is arranged on the three-jaw chuck, and the indexing dial is sleeved on the six-degree-of-freedom adjusting tool; the cylinder zoom cam to be measured is arranged on the six-degree-of-freedom adjusting tool; the six-degree-of-freedom adjusting tool and the to-be-detected cylindrical zooming cam are coaxially arranged with the rotating main shaft; the measuring shaft and the measuring gauge are both arranged on the tool rest and are arranged side by side; the outer diameter of the measuring shaft is matched with the width of a spiral groove on the cylindrical zoom cam to be measured. The device can be realized after being adjusted by one-time clamping: the method comprises the steps of measuring the straightness of the cylindrical zoom cam, measuring the roundness, measuring the distance error between the spiral grooves and measuring the average division error of the multi-line spiral grooves. The detection precision and cost are greatly improved, and the detection operation steps are simplified.
Description
Technical field
The utility model belongs to the detection field of optical instrument, and in particular to a kind of cylinder zoom cam cutting precision inspection
Survey device.
Background technology
Zoom cam is the vital part that varifocal optical system is used for realization optical zoom, and the operation principle of zoom cam is
Drive the driven part being attached thereto to reciprocatingly move using the curved profile of the part in itself, i.e., transported by the revolution of the part
Turn is melted into the linear motion of driven part.So the part machine after cylinder straightness, cylinder circularity, spiral
The indexing etc. of the machining accuracy of groove curve and multi-thread helicla flute on the cylinder directly affects the image quality of optical system.
It is approximate that traditional detection method can only rely on the three coordinate measuring machine for being configured with high-precision rotary mechanism on a small quantity to carry out
Measurement, the result of three-dimensional coordinates measurement machine testing because the shape of measuring probe, contacting points position, helicla flute curvature, contact angle and
The influence of many factors such as depth, knee of curve round and smooth degree is contacted, causes testing result inaccurate and unstable, there are difference
The erroneous judgement of degree, while whole process is cumbersome, time-consuming, uncertain big, the testing cost height of detection.
Utility model content
In order to solve the problems, such as in background technology, the utility model provides a kind of cylinder zoom cam cutting precision inspection
Device is surveyed, can realize that zoom cam cylinder straightness, cylinder circularity, helicla flute curve are sat after being adjusted by clamped one time
Mark and the detection indexed of multi-thread helicla flute on the cylinder, substantially increase the precision and testing cost of detection, while greatly
Operating procedure during detection is simplified greatly.
The concrete technical scheme of the utility model is：
A kind of cylinder zoom cam cutting accuracy detecting device, including lathe；The head installation rotation master of the lathe
Installed on axis, live spindle scroll chuck, mobile pallet is installed in the middle part of lathe, the afterbody of lathe is provided with tailstock；It is mobile
Knife rest is installed on pallet；
It is characterized in that：Further include six degree of freedom adjustment frock, calibrated dial, measurement axis and measurement table tool；
Six degree of freedom adjustment frock is installed on scroll chuck, and calibrated dial is sleeved in six degree of freedom adjustment frock；
Cylinder zoom cam to be measured is installed in six degree of freedom adjustment frock；Six degree of freedom adjustment frock, cylinder zoom to be measured are convex
Wheel is coaxially disposed with the live spindle；
Measurement axis and measurement table tool are installed on knife rest, and are arranged side by side；The outside diameter and circle to be measured of the measurement axis
The width of helicla flute matches on cylinder zoom cam.
Specifically, six degree of freedom adjustment frock includes being used to adjust cylinder zoom cam six-freedom degree to be measured
Whole its cylinder geometric center lines of guarantee are coaxial with the rotation centerline of lathe live spindle.
Further, the outside diameter of axis and helicla flute clearance fit on cylinder zoom cam to be measured are measured；Gap value is
0.03~0.06mm；
Specifically, measurement table tool is amesdial or dial gauge.
The utility model has the advantage of：
1st, using the measuring device of the utility model, zoom cam cylinder straight line can be realized after clamped one time adjustment
The measurement of degree, the equal error of division of cylinder circularity, helicla flute range error and multi-thread helicla flute on the cylinder, greatly improves
The precision and testing cost of detection, while operating procedure when enormously simplify detection.
2nd, using the method for the utility model, avoid conventional method measure helix apart from when can be subject to helix liter
The error that angle influences and brings, measurement accuracy higher.
3rd, the utility model corresponds measurement distance and cylinder zoom cam rotation angle to be measured, each angle
A range error, precision higher can be measured.
4th, the utility model can increase six degree of freedom adjustment frock on machine tool, cylinder to be measured can be achieved in measurement axis
The measurement of four aspect parameters of body zoom cam, without special lathe again or purchases a whole set of detection device, cost is low.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model device；
Fig. 2 is schematic diagram of the utility model when measuring helicla flute range error；
Fig. 3 is schematic diagram of the utility model in the equal error of division of the multi-thread helicla flute of measurement.
Reference numeral is as follows：
1. 2. scroll chuck of lathe, 3. six degree of freedom adjustment frock, 4. calibrated dial, 5. cylinder zooms to be measured are convex
The measurement of wheel 6. axis, 7. knife rest, 8. dial gauge or amesdial, 9. live spindles, 10. movement pallets, 11. tailstocks.
Embodiment
First, detection device forms
Detection device composition is as shown in Figure 1.
The device includes lathe 1；The head installation live spindle 9 of the lathe 1, install scroll chuck in live spindle 9
2nd, the middle part of lathe 1 is provided with mobile pallet 10, the afterbody of lathe 1 is provided with tailstock 11；Knife rest is installed on mobile pallet 10
7；Further include six degree of freedom adjustment frock 3, calibrated dial 4, measurement axis 6 and measurement table tool；
Six degree of freedom adjustment frock 3 is installed on scroll chuck 2, and it is convex that calibrated dial 4 is sleeved on cylinder zoom to be measured
On wheel 5；Cylinder zoom cam 5 to be measured is installed in six degree of freedom adjustment frock 3；Six degree of freedom adjustment frock 3, cylinder to be measured
Body zoom cam 5 is coaxially disposed with the live spindle 9；
Wherein, six degree of freedom adjustment frock 3 is used to be adjusted guarantee to cylinder zoom cam six-freedom degree to be measured
Its cylindrical geometry center line is coaxial with the rotation centerline of lathe live spindle.
Measurement axis 6 and measurement table tool are installed on knife rest 7, and are arranged side by side；It is described measurement axis 6 outside diameter with it is to be measured
The width of helicla flute, which matches, on cylinder zoom cam 5 (specifically, measures the outside diameter of axis and cylinder zoom cam to be measured
Upper helicla flute clearance fit；Gap value is 0.03~0.06mm).
Particularly, measurement table tool is amesdial or dial gauge 8.
2nd, the installation and adjustment of cylinder zoom cam to be measured
1st, six degree of freedom adjustment frock 3 is installed on the scroll chuck 2 of lathe 1；
2nd, the calibrated dial 4 for being provided with cylinder zoom cam 5 to be measured is fixed in six degree of freedom adjustment frock 3；
3rd, the translation of six degree of freedom adjustment frock 3 is adjusted in 1 live spindle rotary course of lathe and tilts constraint so that
The cylindrical geometry center of cylinder zoom cam 5 to be measured is overlapped with the pivot of the live spindle of lathe 1, during adjustment
Centering is calibrated using dial gauge or amesdial 8 fixed on mobile pallet 10；
4th, the cylindrical geometry center of cylinder zoom cam 5 to be measured is with the standard that the main shaft pivot of lathe 1 overlaps
The installation of cylinder zoom cam 5 to be measured or positioning reference plane are without bounce；
If the 5, cylinder zoom cam 5 to be measured is long or rigidity is inadequate, auxiliary branch is provided using lathe tailstock 11
Support.
3rd, cylinder zoom cam Linearity surveying
A1：Dial gauge or amesdial are fixed on mobile pallet, the probe height of dial gauge or amesdial is adjusted, makes it
It is contour with lathe live spindle, ensure that the probe telescoping direction of dial gauge or amesdial is overlapped with contact surface normal；
A2：Locking lathe live spindle, avoid its rotation；
A3：By from left to right or from right to left adjusting mobile tray position, circle can be measured by dial gauge or amesdial
Cylinder zoom cam face jerk value, straightness can be calculated by jerk value.
4th, the roundness measurement of cylinder zoom cam
B1：Dial gauge or amesdial are fixed on lathe movement pallet, adjust dial gauge or amesdial probe height, with
Lathe live spindle is contour, ensures that dial gauge or amesdial probe telescoping direction are overlapped with contact surface normal；
B2：Choose and the section is measured in one week by boring-and-turning mill live spindle behind the section of cylinder zoom cam to be measured
Jerk value, circularity can be calculated by jerk value.
5th, the detection of cylinder zoom cam helical slot distance error
Referring to Fig. 2：
C1：Measurement axis is fixed on knife rest, axial line and the lathe live spindle axial line of adjustment measurement axis it is contour and
It is coplanar, while ensure to measure and be mutually perpendicular between the axial line of axis and lathe live spindle；
C2：Cylinder zoom cam to be measured is adjusted to measurement position, lathe live spindle is locked, avoids its rotation；It is logical
Knife rest is crossed to move so that measurement axis is contacted with any point A of first helicla flute in cylinder zoom cam to be measured, at the same time
Will mobile tray position show value clear 0；
C3：Knife rest is retracted into home position, measurement axis is separated with A points；Then move pallet make measurement axis advance away from
From d；Needing to ensure during displacement distance d, measurement axis can contact under the drive of knife rest with any point B of the second helicla flute, this
Shi Yidong tray positions show value is d；
C4：Read after mobile pallet show value d adds the gap value of measurement axis outside diameter and cam helical well width and draw A
Actual measurement dimension D between point and B points；
D=d+ gap values；
C5：According to the difference between actual measurement dimension D and theoretical size D1, determine cylinder zoom cam in initial angle
Range error between multi-thread helicla flute；
C6：Lathe live spindle is set to drive the rotation of cylinder zoom cam, repeat step C2 is to step C4, in helicla flute
All match points measure, and draw the range error value sequence of all match points.
6th, the detection of the equal error of division of the multi-thread helicla flute of cylinder zoom cam
Referring to Fig. 3：
D1：Measurement axis is fixed on knife rest, axial line and the lathe live spindle axial line of adjustment measurement axis it is contour and
It is coplanar, while ensure to measure and be mutually perpendicular between the axial line of axis and lathe live spindle；
D2：Cylinder zoom cam to be measured is adjusted to measurement position, lathe live spindle is locked, avoids its rotation；It is logical
Cross knife rest movement and contacted so that measuring axis with any point A of a helicla flute in cylinder zoom cam to be measured, at the same time will
Clear 0 ° of calibrated dial angle show value；
D3：Knife rest is retracted into home position, measurement axis is separated with A points；Then rotating calibrated dial makes measurement axis
Rotation alpha °；Need to ensure that measurement axis can be with any point B of another helicla flute under the drive of lathe live spindle during rotation alpha °
Contact, calibrated dial angle show value is α ° at this time；
D4：It is α ° to read calibrated dial angle show value, and theoretical indexing makes the difference between multi-thread helicla flute by it,
It can draw the equal error of division of multi-thread helicla flute.
It should be noted that when measurement indexes, when helicla flute is 2, theoretical indexing is 180 °, works as measurement
When going out ︱ ° of ︱ alpha-betas=179.99 °, then the equal error of division on the H of cross section is 0.01 °；
When helicla flute is 3, theoretical indexing is 120 °, when measuring ︱ ° of ︱ alpha-betas=120.02 °, then in cross section
The equal error of division on H is 0.02 °.
Claims (4)
1. a kind of cylinder zoom cam cutting accuracy detecting device, including lathe；The head installation live spindle of the lathe,
Installed in live spindle scroll chuck, mobile pallet is installed in the middle part of lathe, the afterbody of lathe is provided with tailstock；Mobile pallet
On knife rest is installed；
It is characterized in that：Further include six degree of freedom adjustment frock, calibrated dial, measurement axis and measurement table tool；
Six degree of freedom adjustment frock is installed on scroll chuck, and calibrated dial is sleeved in six degree of freedom adjustment frock；It is to be measured
Cylinder zoom cam is installed in six degree of freedom adjustment frock；Six degree of freedom adjustment frock, cylinder zoom cam to be measured are equal
It is coaxially disposed with the live spindle；
Measurement axis and measurement table tool are installed on knife rest, and are arranged side by side；The outside diameter and cylinder to be measured of the measurement axis
The width of helicla flute matches on zoom cam.
2. cylinder zoom cam cutting accuracy detecting device according to claim 1, it is characterised in that：Described six freely
Degree adjustment frock includes being used to be adjusted cylinder zoom cam six-freedom degree to be measured ensureing its cylindrical geometry center line
It is coaxial with the rotation centerline of lathe live spindle.
3. cylinder zoom cam cutting accuracy detecting device according to claim 2, it is characterised in that：Measure the outer of axis
Footpath and helicla flute clearance fit on cylinder zoom cam to be measured；Gap value is 0.03~0.06mm.
4. cylinder zoom cam cutting accuracy detecting device according to claim 3, it is characterised in that：Measurement table has
Amesdial or dial gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085069.4U CN207344264U (en) | 2017-08-28 | 2017-08-28 | Cylinder zooms cam machining precision detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085069.4U CN207344264U (en) | 2017-08-28 | 2017-08-28 | Cylinder zooms cam machining precision detection device |
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| Publication Number | Publication Date |
|---|---|
| CN207344264U true CN207344264U (en) | 2018-05-11 |
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ID=62412856
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721085069.4U Active CN207344264U (en) | 2017-08-28 | 2017-08-28 | Cylinder zooms cam machining precision detection device |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107529473A (en) * | 2017-08-28 | 2018-01-02 | 中国科学院西安光学精密机械研究所 | Cylinder zoom cam machining precision detection device and application method thereof |
| CN109877651A (en) * | 2019-01-28 | 2019-06-14 | 苏州凯雷特精密机械有限公司 | A kind of space flight fastener numerical control turning measurement feedback device |
-
2017
- 2017-08-28 CN CN201721085069.4U patent/CN207344264U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107529473A (en) * | 2017-08-28 | 2018-01-02 | 中国科学院西安光学精密机械研究所 | Cylinder zoom cam machining precision detection device and application method thereof |
| CN107529473B (en) * | 2017-08-28 | 2023-12-08 | 中国科学院西安光学精密机械研究所 | Cylinder zoom cam machining precision detection device and application method thereof |
| CN109877651A (en) * | 2019-01-28 | 2019-06-14 | 苏州凯雷特精密机械有限公司 | A kind of space flight fastener numerical control turning measurement feedback device |
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