CN106289022B - The measurement method of minor diameter of internal thread - Google Patents
The measurement method of minor diameter of internal thread Download PDFInfo
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- CN106289022B CN106289022B CN201510321241.0A CN201510321241A CN106289022B CN 106289022 B CN106289022 B CN 106289022B CN 201510321241 A CN201510321241 A CN 201510321241A CN 106289022 B CN106289022 B CN 106289022B
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- internal thread
- minor diameter
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Abstract
The present invention discloses a kind of measurement method of minor diameter of internal thread, is used to measure the minor diameter of internal thread of motion module.The measurement method of minor diameter of internal thread comprises the steps of：Hollow retainer is provided, hollow retainer is equipped with multiple holding holes, multiple steel balls are embedded at such holding hole respectively；Hollow retainer and motion module are screwed togather, such steel ball is made to engage with the internal thread of motion module；And multiple metallic rods are provided, select one of such metallic rod to be inserted into hollow retainer.
Description
Technical field
The present invention relates to a kind of measurement method of minor diameter of internal thread, it is specifically for use in the internal thread for measuring motion module
Diameter.
Background technology
Ball screw is that one kind being widely used in the essences such as toolroom machine, optoelectronic device, semiconductor equipment or accurate Medical Devices
Motion module in close equipment, actually important transmission component, setting are designed to provide accurate transmission agency, by
Rotary motion in mechanically actuated and linear motion, so make carrying board or object in carrying out start in rectilinear direction.
With the development of technology, requirement of the action of ball screw in precision is also higher, wherein is directly related to spiral shell
Bar and the connection of other components are exactly nut, through screwing togather for nut internal thread, so that groove of the ball on screw thread is rolled, reach
To the purpose of connection and transmission.
But in the manufacturing process of nut, if minor diameter of internal thread is unable to reach default precision or interior path length differs
It causes, other than causing screw rod to can not be successfully with the connection of other components, will also result in ball and can not be successfully in the groove of screw thread
It rolls, influences the transmission function of ball screw, so how to detect whether bottom diameter reaches default precision, whether is internal diameter
Project that is uniform, being actually concerned about in industry.
It please refers to shown in Fig. 1, is the method schematic diagram for measuring its minor diameter of internal thread of nut in known technology, measuring appliance
There are graduated scale 11, adjustable spring 12, the body of rod 13, knob 14 and measures folder 15.The body of rod 13 has mobile bar 131 and fixed link 132,
Mobile bar 131 is socketed in fixed link 132, and graduated scale 11 is connect with mobile bar 131.Measure folder 15 have the first folder portion 151 with
Second folder portion 152, and the second folder portion 152 is fixedly arranged in fixed link 132, and the first folder portion 151 is then fixedly arranged in mobile bar 131.
When measurement, makes both the first folder portion 151 and second folder portion 152 of measurement folder 15 first and close, and observe the scale of graduated scale 11
Whether value is zeroed, and knob 14 is screwed on if being zeroed, and fixed mobile bar 13 makes the first folder portion 151 and the second folder portion 152 keep simultaneously
Conjunction state, and adjustable spring 12 is in confined state.Then, the measurement of the first folder portion 151 and the second folder portion 152 and conjunction is pressed from both sides
15 stretch into the inside of nut S to be measured, then unscrew knob 14, are discharged after being stretched by confined state by adjustable spring 12
Elastic force pushes mobile bar 13, makes the first folder portion 151 far from the second folder portion 152, and graduated scale 11 is also because of the movement of mobile bar 131
And related movement.It waits for that the first folder portion 151 is flared to the second folder portion 152 to resist the surfaces internal thread S1 of nut S to be measured just and be
Only, then knob 14 is locked to fix graduated scale 11 and measure folder 15, the reading on graduated scale 11 is nut S to be measured in it at this time
The minor diameter of internal thread L1 of screw thread S1.
However, this measuring appliance is under permanent use, adjustable spring 12 can be because be repeated compression and stretching
Reason, other than causing a degree of abrasion, the movement of mobile bar 131 when also will produce elastic fatigue, and then influencing to measure
Level allows measurement accuracy to be greatly reduced, simultaneously as the component that measuring appliance has adjustable spring 12, knob 14 etc. accurate, structure
Complexity, the technology for needing in production process input complicated and other precision manufactureing instruments, have certain manufacture difficulty, cause to survey
The cost of measuring device improves, and usually maintenance is difficult.Further, the range that measuring appliance can measure depends on the rule of adjustable spring 12
Lattice can not neatly correspond to the bottom diameter of certain special requirements, and the interior electrical path length that can not be also directed to more thin portion again is finely tuned.
Therefore, how a kind of measurement method of minor diameter of internal thread is provided, other than it can simply and accurately measure,
The various female products of tool are easily applied to, and manufactures easy, low production cost, simple structure with component and is easy
The effect of maintenance, while various bottom diameter length can also be neatly corresponded to, it can be also directed to the fine tuning that thin portion is done needed for measuring,
As important project.
Invention content
In view of the above subject, the purpose of the present invention is to provide a kind of measurement method of minor diameter of internal thread, and it is suitable for surveying
The minor diameter of internal thread for measuring motion module, without using the component that composition is complicated, and dimensions is simple, therefore can reduce correlative measurement
Measure whole production and the assembly cost of component, and the minor diameter of internal thread suitable for measuring each kenel and specification.
In order to achieve the above object, a kind of measurement method of minor diameter of internal thread according to the present invention, is used to measure motion module
Minor diameter of internal thread, the measurement method of minor diameter of internal thread comprises the steps of：Hollow retainer is provided, hollow retainer is equipped with more
Multiple steel balls are embedded at such holding hole by a holding hole respectively；Hollow retainer and motion module are screwed togather, such steel ball is made
Engage with the internal thread of motion module；And multiple metallic rods are provided, select one of such metallic rod to be inserted into hollow guarantor
Holder.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, motion module are the nut of ball screw.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, the only turn in each holding hole of each steel ball.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, such holding hole is in corresponding on hollow retainer
The internal thread arranges.
The measurement method of the minor diameter of internal thread of the present invention also comprises the steps of in embodiment：When selected metal
When bar is only capable of partial insertion hollow retainer, another metallic rod is selected to be inserted into hollow retainer.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, the diameter of such metallic rod is relatively equal difference
Relationship.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, the diameter of such metallic rod differs at least each other
0.001mm。
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, such steel ball diameter having the same.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, hollow retainer is made with 3D printer.
The measurement method of the minor diameter of internal thread of the present invention, in embodiment, minor diameter of internal thread be equal to twice diameter of the steel ball with
The sum of metal shank diameter.
From the above, the measurement method of minor diameter of internal thread of the invention, is constituted by the above embodiments, can it is simple and
Accurately measure minor diameter of internal thread.Since measurement method only needs, using components such as hollow retainer, steel ball, metallic rods, to survey
It is also therefore reduced using the complexity of component in amount method, is also easy to apply in the various female associated components of tool, example
The nut in ball screw is applied in this way.Meanwhile because the composed structure using component is simple, dimensions is relatively simple, removes
Manufacture is easy, except low production cost, is also beneficial to maintenance on ordinary days.Further, since the present invention uses multiple
The metallic rod of different-diameter size measures, therefore can neatly correspond to the minor diameter of internal thread for measuring various default precision, root
The case where factually border measures carries out corresponding thin portion adjustment, achievees the purpose that accurately to measure.
Description of the drawings
Fig. 1 is the schematic diagram that its minor diameter of internal thread of nut is measured in known technology.
Fig. 2 is the step flow chart of the embodiment of the present invention.
Fig. 3 is that component diagram is measured used in the embodiment of the present invention.
Fig. 4 is the process schematic of hollow retainer threading movement module shown in Fig. 3.
Fig. 5 is the enlarged cross-sectional view of A-A tangent lines in Fig. 3.
Fig. 6 is the stereoscopic schematic diagram that metallic rod shown in Fig. 3 is inserted into hollow retainer.
Fig. 7 to Fig. 8 is the diagrammatic cross-section that metallic rod shown in Fig. 3 is inserted into hollow retainer.
Specific implementation mode
Hereinafter with reference to correlative type, illustrate a kind of measurement method of minor diameter of internal thread according to the preferred embodiment of the present invention,
Wherein identical component will be illustrated with identical reference marks.
Referring to Fig. 2 and Fig. 3, wherein Fig. 2 is the step flow chart of the embodiment of the present invention, and Fig. 3 is of the invention
Component diagram is measured used in embodiment.When measuring the minor diameter of internal thread of motion module 31, in step S01, carry first
For hollow retainer 32, there is hollow retainer 32 outer surface 321 and inner surface 322, hollow retainer 32 to be provided with multiple
Holding hole 323, such holding hole 323 run through outer surface 321 and inner surface 322.Hollow retainer 32 can be by ejection formation, gold
Belong to cutting, or is formed through the mode of 3D printing.Then, multiple a steel balls 33 are provided, such steel ball 33 is respectively embedding
It is located in such holding hole 323.
It must be noted that in the present embodiment, hollow retainer 32 is by taking columned hollow frame as an example, however this hair
It is bright to be not limited thereto.Hollow retainer 32 can do corresponding variation according to the shape of the motion module 31 of measurement, e.g. round
The polygonal columns such as column, triangle column, quadrangle column or hexagonal column, corresponding collocation is appropriate to be arranged or inserts
Enter mode, subsequently to be measured, the present embodiment selects columned hollow frame explanation.In addition, the movement mould of the present embodiment
By taking the nut of ball screw as an example, the present invention is also not limited block 31, i.e., motion module 31 can be various other with interior
The component of screw thread, the e.g. mobile ontology of linear transmission module.
Then, in step S02, by hollow retainer 32 toward the opening of motion module 31, that is, toward motion module 31
Be axially inserted into, so that hollow retainer 32 is screwed togather with motion module 31.The process screwed togather is as shown in Figure 4.Fig. 4 is hollow retainer
The process schematic of 32 threading movement modules 31.Wherein it should be noted that, the holding hole 323 on hollow retainer 32 is designed as
The hand of spiral of 31 its internal thread of corresponding motion module.In other words, it is arranged on hollow retainer 32 and runs through outer surface 321
And such holding hole 323 of inner surface 322, orientation correspond to the hand of spiral of internal thread 311.Through corresponding pass above-mentioned
System, after so that hollow retainer 32 is screwed togather with motion module 31, such steel ball 33 is able to thereby be sticked in the interior spiral shell of motion module 31
In line 311.
It is noted that each steel ball 33 is embedded the state in each holding hole 323 as shown in figure 5, Fig. 5 is that A-A is cut in Fig. 3
The enlarged cross-sectional view of line.Wherein, the steel ball 33 being embedded in holding hole 323 can only the turn in holding hole 323.In other words,
Steel ball 33 can not do the laterally movement with axial direction relative to holding hole 323 and hollow retainer 32.By aforementioned composition, it is different from
In general ball screw, ball can carry out loopy moving with thread groove.32 threading movement module 31 of above-mentioned hollow retainer
During, it is to enable hollow retainer 32 toward the inside spiral shell of motion module 31 by the turn in holding hole 323 of steel ball 33
It closes and screws in.
Then, in step S03, one of multiple a metallic rods 34 is provided, and select such metallic rod 34 and be inserted into
Hollow retainer 32, that is, by metallic rod 34 towards the hollow space of hollow retainer 32 toward the axial direction side of hollow retainer 32
To insertion.The state that metallic rod 34 is completed after insert action is as shown in FIG. 6 and 7, and Fig. 6 is that metallic rod 34 is inserted into hollow retainer
32 stereoscopic schematic diagram, Fig. 7 are the diagrammatic cross-section that metallic rod 34 is not yet fully inserted into hollow retainer 32.
Metallic rod 34 is completed after being inserted into, as shown in fig. 7, the length of its minor diameter of internal thread of motion module 31 L is that is, steel
Twice of the diameter B of pearl 33 with the diameter of metallic rod 34 D's and.Also, since the diameter B of such steel ball 33 is known number
Value, simultaneous selection are inserted into its diameter of the metallic rod 34 of hollow retainer 32 D and are equally also intended to by it is known that can thereby calculate
The length of the minor diameter of internal thread L of measurement.
The measurement method of the minor diameter of internal thread of the present invention may further include step S04, in step S04, if working as
Selected metallic rod 34 is only capable of partial insertion hollow retainer 32, that is, the state such as Fig. 8 is presented, and metallic rod 34 can not be complete
When site preparation is inserted into hollow retainer 32, that is, stop insert action, takes out metallic rod 34, the metallic rod for selecting another diameter smaller
34 are inserted into hollow retainer 32, aforementioned activities are repeated, until selected metallic rod 34 can be inserted entirely into hollow retainer
In 32, until the state such as Fig. 7 is presented.
It must remind, be not selection diameter in the metallic rod 34 that selection is inserted into step S03 and step S04
It is significantly less than the metallic rod 34 of minor diameter of internal thread in appearance, but selects diameter in appearance close to the metallic rod of minor diameter of internal thread
34.Meanwhile when being inserted into metallic rod 34, above-mentioned so-called metallic rod 34 is only capable of the state of partial insertion hollow retainer 32, refers to
Be gauger in the case where bestowing general propulsive force, metallic rod 34 has advanced into the case where can not being inserted into, and does not mean that
The case where gauger excessively forces force to be inserted into metallic rod 34.
In addition, the quantity of multiple metallic rods 34 used in the measurement method of the minor diameter of internal thread of the present embodiment can be 8,
The diameter of such metallic rod 34 is relatively equal difference relationship, and the numerical value of equal difference relationship preferably differs 0.001 millimeter (mm) extremely
Any number between 0.2 millimeter.For example, when etc. differences be 0.001 millimeter when, by the diameter of each metallic rod 34 by greatly extremely
After minispread, the metallic rod 34 that diameter first is grown and the metallic rod 34 that diameter second is grown can differ 0.001 milli on diameter length
Rice (1 micron, 1 μm).Similarly, the metallic rod 34 that the metallic rod 34 that diameter second is grown is grown with diameter third is on diameter length
0.001 millimeter can be differed, and so on.However the diameter equal difference numerical value of metallic rod 34 can be according to the motion module to be measured
The specification that internal thread either metallic rod makes mold properly selects, e.g. 0.005 millimeter (5 microns), 0.01 millimeter
(10 microns), 0.05 millimeter (50 microns), 0.1 millimeter (100 microns), 0.2 millimeter of (200 microns) equal length.
It is noted that when the metallic rod of selection measurement, it can also be to use the metallic rod of different diameter specifications with, change
Sentence is talked about, and selected its diameter of multiple metallic rods is each other not at equal difference relationship.Such as the metallic rod grown of diameter first with it is straight
The metallic rod difference that diameter second is grown is 1 micron, but the metallic rod of the length of diameter second differs with the metallic rod that diameter third is grown and is
10 microns, the numerical value of difference is equally that can be properly selected according to the internal thread of the motion module of measurement, only gold in the present invention
The specification that the greatest measure of category shank diameter difference is as exemplified above is preferably 200 microns.Also, in the above-described embodiments, metallic rod
34 quantity is for 8, and but not limited to this.The quantity of metallic rod 34 can be in the internal thread according to the motion module 31 of measurement
Diameter preset precision change or respective production during the quantity that molds of mold do and accordingly change, e.g. 4,6
Branch or the quantity such as 10.
And when actually measuring, it can sequentially be tested since the metallic rod 34 with maximum gauge.Also that is, being held in step S02
After row finishes (hollow retainer 32 is with axial direction threading movement module 31), when executing step S03, first select with maximum
The metallic rod 34 of diameter is inserted into hollow retainer 32, if should can not be inserted into the metallic rod 34 of maximum gauge, (including can not be complete
The case where whole insertion) hollow retainer 32, then take out the metallic rod 34 of the maximum gauge, and change the gold with vice-minister's diameter
Belonging to bar 34, row is inserted into again.Time metallic rod 34 of diameter length is so sequentially selected, until hollow retainer can be completely inserted by choosing
32 metallic rod 34 then can calculate the length of minor diameter of internal thread L in the foregoing manner using the diameter D of the metallic rod 34 at this time
Degree, and judge whether the minor diameter of internal thread L of motion module 31 reaches default precision.
In addition, the hollow retainer 32 of the present embodiment in addition to can be used general mold injection forming method make other than,
Can also be to be made using the mode that 3D printer prints, mode that only the present invention is not limited thereto can be according to actual measurement
Cost either equipment demand, to do variation appropriate.The hollow retainer 32 of the present embodiment is in such a way that 3D printer prints
It explains, is easy with reaching manufacture, the target of low production cost.In addition, the producer of the steel ball 33 of the present invention, metallic rod 34
Formula does not do the limitation of any mode equally, and only the manufacture of steel ball and metallic rod is the known normal of those skilled in the art
Know, therefore repeats no more herein.
Referring once again to Fig. 7 and Fig. 8, the measurement method of minor diameter of internal thread according to the present embodiment, when metallic rod 34 can be complete
When site preparation is inserted into hollow retainer 32, the length of its minor diameter of internal thread of metallic rod 34 L that is, twice of 33 diameter B of steel ball with
The sum of 34 diameter D of metallic rod.On the other hand, when metallic rod 34 can not be inserted entirely into hollow retainer 32, that is, such as Fig. 8
Shown in state, when metallic rod 34 is only capable of partial insertion hollow retainer 32, prevent metallic rod 34 be inserted into prevention point P i.e. represent
Flaw point possessed by internal thread 311.In other words, the measurement method of the minor diameter of internal thread of the present embodiment can not only be measured
The length of minor diameter of internal thread L, while can also detect the flaw location of internal thread 311 possessed by motion module 31, it can be into one
Step helps the production yield of lifter motion module.
In conclusion the measurement method of the minor diameter of internal thread of the present invention, by using each amount described in above-described embodiment
Component is surveyed, the length of minor diameter of internal thread can be simply and accurately measured.Also that is, since measurement method only uses hollow guarantor
The components such as holder, steel ball, metallic rod, therefore also therefore reduced using the complexity of component in measurement method, it is also easy to apply each
Kind has in female associated component, e.g. applies the nut in ball screw.Meanwhile because using component composition knot
Structure is simple, and dimensions is relatively simple, is easy, other than low production cost in addition to manufacturing, is also beneficial to maintenance on ordinary days.More into
It is each can neatly to correspond to measurement since the present invention is measured using the metallic rod of multiple a different-diameter sizes for one step
The minor diameter of internal thread of the default precision of kind carries out corresponding thin portion adjustment according to practical the case where measuring, reaches the mesh accurately measured
's.In addition, during being inserted into test, through the prevention point for finding that metallic rod is prevented to be inserted into, moreover it is possible to detect fortune to be measured
The internal thread flaw location of dynamic model block, can further lifter motion module production yield.
The foregoing is merely illustrative, rather than it is restrictive.It is any without departing from spirit and scope of the invention, and to it
The equivalent modifications of progress or change are intended to be limited solely by appended claims range.
Claims (10)
1. a kind of measurement method of minor diameter of internal thread is used to measure the minor diameter of internal thread of motion module, the minor diameter of internal thread
Measurement method comprise the steps of：
Hollow retainer is provided, the hollow retainer is equipped with multiple holding holes, multiple steel balls is embedded at respectively the multiple
Holding hole；
The hollow retainer and the motion module are screwed togather, the internal thread card of the multiple steel ball and the motion module is made
It closes；And
Multiple metallic rods are provided, one of the multiple metallic rod is selected to be inserted into the hollow retainer.
2. the measurement method of minor diameter of internal thread according to claim 1, wherein the motion module is the spiral shell of ball screw
Cap.
3. the measurement method of minor diameter of internal thread according to claim 1, wherein each steel ball is only in each holding hole
Middle turn.
4. the measurement method of minor diameter of internal thread according to claim 1, wherein the multiple holding hole is in the hollow guarantor
The internal thread arrangement is corresponded in holder.
5. the measurement method of minor diameter of internal thread according to claim 1, also comprises the steps of：
When the selected metallic rod is only capable of hollow retainer described in partial insertion, in selecting another metallic rod insertion described
Empty retainer.
6. the measurement method of minor diameter of internal thread according to claim 5, wherein the diameter of the multiple metallic rod is mutually
For equal difference relationship.
7. the measurement method of minor diameter of internal thread according to claim 6, wherein the diameter of the multiple metallic rod phase each other
At least 0.001 millimeter of difference.
8. the measurement method of minor diameter of internal thread according to claim 1, wherein the multiple steel ball diameter having the same.
9. the measurement method of minor diameter of internal thread according to claim 1, wherein the hollow retainer is with 3D printing mechanism
Make.
10. the measurement method of minor diameter of internal thread according to claim 1, wherein the minor diameter of internal thread is equal to described in twice
Diameter of the steel ball and the metal shank diameter and.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510321241.0A CN106289022B (en) | 2015-06-12 | 2015-06-12 | The measurement method of minor diameter of internal thread |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510321241.0A CN106289022B (en) | 2015-06-12 | 2015-06-12 | The measurement method of minor diameter of internal thread |
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| CN106289022A CN106289022A (en) | 2017-01-04 |
| CN106289022B true CN106289022B (en) | 2018-09-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110434793A (en) * | 2018-05-02 | 2019-11-12 | 兰州兰石重型装备股份有限公司 | Spacing location adjusting device and its application method between jacketed vessel cylinder |
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| CN102278931A (en) * | 2010-12-10 | 2011-12-14 | 东南大学 | Device and method for measuring pitch diameter of extra-large straight thread with high precision in upper-limit-free way |
| CN202812032U (en) * | 2012-08-30 | 2013-03-20 | 全球传动科技股份有限公司 | Ball screw device |
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| TW201331491A (en) * | 2011-10-12 | 2013-08-01 | Nsk Ltd | Method for manufacturing ball screw, and ball screw |
| CN203132480U (en) * | 2013-03-09 | 2013-08-14 | 黑龙江科技学院 | Measuring instrument for internal gear with circular-arc tooth profile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5158449B2 (en) * | 2007-05-28 | 2013-03-06 | 株式会社東京精密 | Arm moving device for measurement |
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|---|---|---|---|---|
| US4547970A (en) * | 1984-08-03 | 1985-10-22 | Brewster Albert L | Thread anvils for inside micrometer |
| CN102278931A (en) * | 2010-12-10 | 2011-12-14 | 东南大学 | Device and method for measuring pitch diameter of extra-large straight thread with high precision in upper-limit-free way |
| TW201331491A (en) * | 2011-10-12 | 2013-08-01 | Nsk Ltd | Method for manufacturing ball screw, and ball screw |
| CN202812032U (en) * | 2012-08-30 | 2013-03-20 | 全球传动科技股份有限公司 | Ball screw device |
| CN202867560U (en) * | 2012-09-28 | 2013-04-10 | 全球传动科技股份有限公司 | Rolling ball spline assembly and outer tube thereof |
| CN203132480U (en) * | 2013-03-09 | 2013-08-14 | 黑龙江科技学院 | Measuring instrument for internal gear with circular-arc tooth profile |
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