CN102303266B - Special protractor for taper hole - Google Patents
Special protractor for taper hole Download PDFInfo
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- CN102303266B CN102303266B CN 201110152918 CN201110152918A CN102303266B CN 102303266 B CN102303266 B CN 102303266B CN 201110152918 CN201110152918 CN 201110152918 CN 201110152918 A CN201110152918 A CN 201110152918A CN 102303266 B CN102303266 B CN 102303266B
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- hole
- plate
- end plate
- guide post
- measuring stick
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Abstract
The invention relates to special measuring tools for taper, in particular to a special protractor for a taper hole. The special protractor comprises a guide rod, a guide sleeve, measuring rods, connecting rods, a main graduated disc and a secondary graduated disc, wherein run-through through holes are arranged on the guide rod; a pin shaft which can rotate and move relative to a first through hole is arranged in the first through hole; a push rod is arranged in a second through hole; one end of the push rod is hinged with the connecting rods; the other end of the push rod is provided with an adjusting screw nut; the other end of each of the connecting rods is hinged with the measuring rods; the other end of a second measuring rod is provided with the secondary graduated disc; the lower surface of the secondary graduated disc is in contact with the upper surface of the main graduated disc; the main graduated disc is arranged at a lower end part of the guide rod; and the measuring faces of the measuring rods are all circular-arc structures. Compared with the prior art, the measuring faces of the measuring rods are the circular-arc structures, the measuring faces are in line contact with a surface to be measured, and the graduation value can be read from corresponding graduation lines on the secondary graduated disc and the main graduated disc, thus the graduation value is more accurate than that obtained by using the traditional common angle rulers and protractors; and in addition, the special protractor for the taper hole is convenient, more timesaving and more laborsaving.
Description
Technical field:
The present invention relates to a kind of tapering special measuring tool, particularly a kind of Special protractor for taper hole.
Background technology:
In plant equipment, often use the cover parts that endoporus is taper hole.This type of part for precision and surface roughness are had relatively high expectations except with the Digit Control Machine Tool processing, generally all is first turning on engine lathe, and stays grinding allowance, then grinding on grinding machine.Method at lathe processing conical bore is at first will rotate a respective angles to small tool.The method of grinding conical bore is at first will be corresponding angle of worktable rotary on grinding machine.Because scale and the scale on the Grinder bench on the lathe saddle all are the number of degrees, and the precision of workpiece taper hole generally all requires to be accurate to minute or second, so when turning or grinding conical bore, the tapering of measuring workpieces repeatedly, compare with the tapering that the tapering of measuring and detail drawing require, adjust again the angle of knife rest or workbench according to error.Therefore, want to process qualified conical bore, can not lean on separately the scale of lathe saddle or Grinder bench to guarantee, a kind of protractor that can accurately measure the conical bore tapering must be arranged.And existing various bevel protractor and protractor are difficult to even can accurately not measure the tapering of conical bore.Its reason has two: first, the measure portion of existing various bevel protractor and protractor generally all is a rectangular planes (because measure portion has certain thickness), this part is that two lines contact (should be a line contact in theory) with taper hole during measurement, it is unequal along the circular arc in each cross section of axis direction to add taper hole, so measure error is very large, second, during measurement, the plane that two slotted lines that are used for taking measurement of an angle on bevel protractor or the protractor in theory form should overlap with the axial section of taper hole, eye and hand that this point is depended the operator alone are to be difficult to guarantee, therefore also can produce measure error.Owing to use existing bevel protractor and protractor can not accurately measure the tapering of taper hole to be processed, therefore, when engine lathe or grinding machine processing taper hole, the workman commonly uses the method that manufactures at present.For the less taper hole of diameter, generally manufacture with the standard taper gage.Its method is, lead oxide red on gauge is touched at first inserts gauge in the taper hole and to rotate, and then gauge is pulled out, and the vestige of observing the lead oxide red on the gauge is judged the size of taper hole tapering.After adjusting the angle of lathe saddle or Grinder bench with this, process again.For the larger taper hole of diameter, the standard taper gage that does not match with it generally all is first the axle that assembles mutually with it to be processed, and then manufactures.Do like this, not only hard, and trouble.
Summary of the invention:
Goal of the invention of the present invention is to overcome the deficiency of background technology and a kind of Special protractor for taper hole that can accurately measure easily cover parts epicone orifice angle is provided.
The present invention adopts following technical scheme:
A kind of Special protractor for taper hole comprises guide post, fairlead, the first measuring stick, the second measuring stick, first connecting rod, second connecting rod, the master calibration dish, secondary dial, described guide post places in the fairlead, and described guide post is provided with the first through hole, the second through hole and the third through-hole of perforation, this first through hole is through the front and rear end of described guide post, and described the second through hole and third through-hole are through the left and right end face of described guide post; Be provided with in described the first through hole and its first bearing pin that can produce relative rotation and move, this first bearing pin and with an end Joint of the first measuring stick; Be provided with described push rod in described the second through hole, the two ends of this push rod extend to respectively the outside of described fairlead, and an end of this push rod is hinged with an end of symmetrically arranged first connecting rod and second connecting rod respectively; The other end of this push rod is provided with screw thread, and this end of thread is equipped with adjusting nut; The middle part bearing of the other end of described first connecting rod and described the first measuring stick is hinged; First bearing at the middle part of the other end of described second connecting rod and described the second measuring stick is hinged; Be hinged with the second bearing pin in the second bearing of this second measuring stick, the two ends of this second bearing pin place in the guide post and with the guide post interference fit; The other end of described the second measuring stick is equipped with secondary scale plate, and the lower surface of this pair scale plate contacts with the upper surface of described master calibration plate; This master calibration plate places the bottom of guide post; The measurement limit of described the first measuring stick and the second measuring stick all is arc-shaped structure.
Adopt the present invention of technique scheme compared with prior art, measure the tapering of cover parts, the tapering of the cover parts taper hole of clamping on lathe particularly, push rod is connected with symmetrically arranged the first measuring stick, the measurement face of the first measuring stick and the second measuring stick is arc-shaped structure, it is line with measured surface and contacts, and can read scale division value from the secondary scale plate graduation mark corresponding with the master calibration plate; Present bevel protractor commonly used and protractor are many accurately than using, and convenient, more save time, and be laborsaving.
As a preferred embodiment of the present invention, be connected with guide plate on the described master calibration plate, consist of groove between the elongated end of this guide plate and the master calibration plate, an end of described secondary scale plate places in this groove.
As a preferred embodiment of the present invention, described fairlead is made of first side, second side, the first end plate, the second end plate and the 3rd end plate; Described first side and second side are symmetrical arranged, described the first end plate be connected end plate and connect the two ends of first side and second side, described the 3rd end plate connects first side and second side and close the first end plate setting, the space that the 3rd end plate, the first end plate and first side and second side surround consists of pilot hole, and the space that the 3rd end plate, first side, second side and the second end plate surround consists of handle hole; Be equipped with coaxial hole on this first end plate, the second end plate and the 3rd end plate.
As a preferred embodiment of the present invention, described the first end plate and the 3rd end plate are provided with square hole, and the second end plate is provided with circular hole.
As a preferred embodiment of the present invention, be embedded with guide post in the described pilot hole, this guide post and pilot hole are slidingly matched.
As a preferred embodiment of the present invention, an end cross section of the described push rod structure that is square is inlaid in the square hole of described fairlead.
As a preferred embodiment of the present invention, the adjusting nut of the described push rod end of thread places the handle hole of fairlead inner.
As a preferred embodiment of the present invention, the top of described the second through hole is provided with reinforcement.
As a preferred embodiment of the present invention, the link interference fit of described the first bearing pin and the first measuring stick.
As a preferred embodiment of the present invention, the length of described first side and second side is all greater than the length of the first end plate and the second end plate.
Description of drawings:
Fig. 1 is assembly structure figure of the present invention.
Fig. 2 is the A-A cutaway view among Fig. 1.
Fig. 3 is the B-B cutaway view among Fig. 2.
Part-structure figure when Fig. 4 is master calibration plate and the alignment of secondary scale plate zero degree.
Fig. 5 is the C-C cutaway view among Fig. 4.
Fig. 6 is that K among Fig. 5 is to view.
Fig. 7 is the D-D profile among Fig. 1.
Fig. 8 is the E-E cutaway view Amplified image among Fig. 1.
Fig. 9 is the structural representation of first connecting rod.
Figure 10 is the side view of Fig. 9.
Figure 11 is the structural representation of second connecting rod.
Figure 12 is the side view of Figure 11.
The specific embodiment:
Below in conjunction with drawings and Examples in detail the present invention is described in detail:
A kind of Special protractor for taper hole, referring to accompanying drawing 1 to accompanying drawing 12, among the figure: guide post 1, measured workpiece 2, push rod 3, the first bolts 4, the first measuring sticks 5, middle part bearing 6, first connecting rod 7, the second bearings 8, second connecting rod 9, the second measuring sticks 10, the second bolts 11, the first bearing 12, the second bearing pins 13, the first screws 14, the first pin 15, master calibration plate 16, secondary scale plate 17, the second pin 18, the second screws 19, guide plate 20, the 3rd pin 21, the end of thread 22, adjusting nut 23, fairlead 24, the first bearing pins 25, the first through holes 26, front end face 27, right side 28, left side 29; Reinforcement 30, the second through holes 31, third through-hole 32; Elongated end 33; Groove 34; The first nut 35; First side 36, circular hole 37, the second end plates 38, handle hole 39, the three end plates 40, second side 41, pilot hole 42, the first end plates 43, square hole 44.
In the present embodiment, guide post 1 is provided with first through hole 26, the second through hole 31, third through-hole 32, the first through holes 26 of perforation through guide post 1 front end face 27 and rear end face; The second through hole 31 and third through-hole 32 are through left side 29 and the right side 28 of guide post 1; The left side 29 of guide post 1 is and the contact-making surface of measured workpiece 2 end faces that the rear end face of guide post 1 is and the front end face 27 forward and backward corresponding faces that be arranged in parallel.
Be provided with in the first through hole 26 with its first bearing pin 25, the first bearing pins 25 that can produce relative rotation and move and with an end Joint of the first measuring stick 5; Be provided with push rod 3 in the second through hole 31, the two ends of push rod 3 extend to respectively the outside of fairlead 24, and an end of push rod 3 is hinged with an end of symmetrically arranged first connecting rod 7 and second connecting rod 9 respectively; The other end of push rod 3 is provided with screw thread, and the end of thread 22 is equipped with the adjusting nut 23 that places fairlead 24 inside.
The middle part bearing 6 of the other end of first connecting rod 7 and the first measuring stick 5 is hinged; First bearing 12 at the middle part of the other end of second connecting rod 9 and the second measuring stick 10 is hinged; Be hinged with the second bearing pin 13, the second bearing pins 13 in the second bearing 8 of the second measuring stick 10 and in the second bearing 8, can rotate, the two ends of the second bearing pin 13 place in the guide post 1 and with guide post 1 interference fit.
The other end of the second measuring stick 10 is equipped with secondary scale plate 17, and the lower surface of secondary scale plate 17 contacts with the upper surface of master calibration plate 16; The measurement limit of the first measuring stick 5 and the second measuring stick 10 all is arc-shaped structure; Be line with the measurement limit of measured workpiece 2 and contact, be beneficial to the raising certainty of measurement.
Third through-hole 32 should be able to guarantee that the second measuring stick 10 has enough rotation spaces around the second bearing pin 13.
As a kind of preferred structure of the present invention, be connected with guide plate 20 on the master calibration plate 16, consist of groove 34 between the elongated end of guide plate 20 and the master calibration plate 16, an end of secondary scale plate 17 places in the groove 34.
As a kind of preferred structure of the present invention, fairlead 24 is made of first side 36, second side 41, the first end plate 43, the second end plate 38 and the 3rd end plate 40; First side 36 and second side 41 are symmetrical arranged, the first end plate 43 be connected end plate 38 and connect the two ends of first sides 36 and second side 41, the 3rd end plate 40 connects first side 36 and second side 41 and close the first end plate 43 and arranges, the 3rd end plate 40, the first end plate 43 consist of the space formation handle hole 39 that pilot hole 42, the three end plates 40, first side 36, second side 41 and the second end plate 38 surround with the space that first side 36 and second side 41 surround; Be equipped with coaxial aperture on the first end plate 43, the second end plate 38 and the 3rd end plate 40.
As a kind of preferred structure of the present invention, the first end plate 43 and the 3rd end plate 40 are provided with square hole 44, the second end plates 38 and are provided with circular hole 37; First side 36 and second side 41 are the polyline shaped structure, shown in accompanying drawing 7.
As a kind of preferred structure of the present invention, the cross section of pilot hole 42 and guide post 1 structure that all is square is embedded with guide post 1 in the pilot hole 42, and guide post 1 is slidingly matched with pilot hole 42.
As a kind of preferred structure of the present invention, an end cross section of push rod 3 structure that is square is inlaid in the square hole 44 of fairlead 24; Anti-throw-out lever 3 produces relative rotation.
As a kind of preferred structure of the present invention, the adjusting nut 23 of the end of thread 22 of push rod 3 places handle hole 39 inside of fairlead 24.Adjusting nut 23 can make the end of thread 22 of push rod 3 relatively move with its generation, is beneficial to adjustment the first measuring stick 5 and the second measuring stick 10 with respect to the measurement contact wire of measuring the surface.
As a kind of preferred structure of the present invention, the link interference fit of the first bearing pin 25 and the first measuring stick 5.
As a kind of preferred structure of the present invention, the top of the second through hole 31 is provided with reinforcement 30.The part of the second through hole 31 has reinforcement in the prerequisite of not interfering fairlead 24 and the first measuring stick 5, the body of guide post 1 is played the effect of reinforcement; More be conducive to guarantee the precision measured.
As a kind of preferred structure of the present invention, the length of first side 36 and second side 41 is all greater than the length of the first end plate 43 and the second end plate 38.
The front and rear end of running through on the guide post 1 is provided with the first through hole 26, the first through holes 26 and is strip structure, runs through left side 29 and right side 28 and is provided with the second through hole 31 and third through-hole 32.
Rotate adjusting nut 23 can make push rod 3 along square hole 44 with respect to fairlead 24 move left and right, push rod 3 can also move up and down with fairlead 24 in the second through hole 31 of guide post 1.
The other end of first connecting rod 7 is hinged with the middle part bearing 6 of the first measuring stick 5 by the non-threaded part of the first bolt 4, shown in accompanying drawing 8.Non-threaded end parts and first bearing 12 of second measuring stick 10 of the other end of second connecting rod 9 by the second bolt 11 is hinged.
The equal in length of first connecting rod 7 and second connecting rod 9 is one group.When using this product of a kind of specification, first connecting rod 7 and second connecting rod 9 can have many groups, and every group of length is unequal, to adapt to the tapering of different-diameter taper hole.This product is the same with micrometer also can to produce several specifications, and every kind of specification is measured the tapering in certain diameter range.For example: the scope that the Special protractor for taper hole of certain specification is measured the taper hole diameter is 60 millimeters to 110 millimeters, it is furnished with five groups of first connecting rods 7 and second connecting rod 9, use first group, can measure 60 millimeters to the tapering of 70 millimeters taper hole diameters, use second group, can measure 70 millimeters to the tapering of 80 millimeters taper hole diameters, by that analogy.
Use Special protractor for taper hole to measure method and the step of clamping cover parts taper hole tapering on lathe or grinding machine:
First, choose the Special protractor for taper hole of dimension according to the diameter of part taper hole, and then choose corresponding one group of first connecting rod 7 and second connecting rod 9, and the end that first connecting rod 7 is connected with second connecting rod respectively by the first bolt 4 be connected bolt 11 and the first measuring stick 5 be connected measuring stick 10 and be connected, the other end that first connecting rod 7 is connected with second connecting rod also is connected with an end of push rod 3 by bolt.
Second, the first measuring stick 5 and the second measuring stick 10 are put into the conical bore of tested part, then mobile guide overlaps 24 on one side, rotate adjusting nut 23 on one side, make push rod 3 promote first connecting rod 7 and second connecting rod 9, first connecting rod 7 and second connecting rod 9 withstand respectively the first measuring stick 5 and the second measuring stick 10, and the left side 29 of guide post 1 is close on the end face of part, and measurement limit and the taper hole bus of the first measuring stick 5 and the second measuring stick 10 are close to.
The 3rd, read the number of degrees at master calibration plate 16, read mark at secondary scale plate 17.It namely is the tapering (general tapered sleeve end face and taper hole center line have perpendicularity to require) of measured circle tapered sleeve taper hole that this angle multiply by 2 again.
Utilize the present invention to measure the tapering of tapering, the particularly clamping cover parts taper hole on lathe of cover parts taper hole, present bevel protractor commonly used and protractor are much accurate than using, and convenient, save time, and be laborsaving.
Protection scope of the present invention is not limited to above-mentioned cited, the front end face 27 of guide post 1, rear end face, left side 29 and right side 28 are not limited to claims and describe, in this explanation for example, also can be defined as front end face to guide post 1 with the end face that contacts of measured workpiece 2; The face that the first through hole 26 connects is defined as left and right end face etc.Expressed structure during the version of the miscellaneous part among the present invention such as fairlead 24 also can be not limited to implement or in the accompanying drawing; As long as can realize above-mentioned measurement function, and structure belongs to the structure that is equal to replacement and all is considered as within protection scope of the present invention.
Claims (10)
1. Special protractor for taper hole, comprise guide post, fairlead, the first measuring stick, the second measuring stick, first connecting rod, second connecting rod, master calibration dish, secondary dial, described guide post places in the fairlead, and an end of described the second measuring stick is equipped with secondary scale plate, and the lower surface of this pair scale plate contacts with the upper surface of described master calibration plate; This master calibration plate places the bottom of guide post; It is characterized in that:
Described guide post is provided with the first through hole, the second through hole and the third through-hole of perforation, and this first through hole is through the front and rear end of described guide post, and described the second through hole and third through-hole are through the left and right end face of described guide post;
Be provided with in described the first through hole and its first bearing pin that can produce relative rotation and move, this first bearing pin and with an end Joint of the first measuring stick;
Be provided with push rod in described the second through hole, the two ends of this push rod extend to respectively the outside of described fairlead, and an end of this push rod is hinged with an end of symmetrically arranged first connecting rod and second connecting rod respectively; The other end of this push rod is provided with screw thread, and this end of thread is equipped with adjusting nut;
The middle part bearing of the other end of described first connecting rod and described the first measuring stick is hinged;
First bearing at the middle part of the other end of described second connecting rod and described the second measuring stick is hinged; Be hinged with the second bearing pin in the second bearing of this second measuring stick, the two ends of this second bearing pin place in the guide post and with the guide post interference fit;
The measurement face of described the first measuring stick and the second measuring stick all is arc-shaped structure.
2. Special protractor for taper hole according to claim 1, it is characterized in that: be connected with guide plate on the described master calibration plate, consist of groove between the elongated end of this guide plate and the master calibration plate, an end of described secondary scale plate places in this groove.
3. Special protractor for taper hole according to claim 1, it is characterized in that: described fairlead is made of first side, second side, the first end plate, the second end plate and the 3rd end plate; Described first side and second side are symmetrical arranged, described the first end plate be connected end plate and connect the two ends of first side and second side, described the 3rd end plate connects first side and second side and close the first end plate setting, the space that the 3rd end plate, the first end plate and first side and second side surround consists of pilot hole, and the space that the 3rd end plate, first side, second side and the second end plate surround consists of handle hole; Be equipped with coaxial hole on this first end plate, the second end plate and the 3rd end plate.
4. Special protractor for taper hole according to claim 3, it is characterized in that: described the first end plate and the 3rd end plate are provided with square hole, and the second end plate is provided with circular hole.
5. Special protractor for taper hole according to claim 3, it is characterized in that: be embedded with guide post in the described pilot hole, this guide post and pilot hole are slidingly matched.
6. Special protractor for taper hole according to claim 1 is characterized in that: an end cross section of the described push rod structure that is square is inlaid in the square hole of described fairlead.
7. Special protractor for taper hole according to claim 1 is characterized in that: the adjusting nut of the described push rod end of thread places the handle hole of fairlead inner.
8. Special protractor for taper hole according to claim 1, it is characterized in that: the top of described the second through hole is provided with reinforcement.
9. Special protractor for taper hole according to claim 1 is characterized in that: the link interference fit of described the first bearing pin and the first measuring stick.
10. Special protractor for taper hole according to claim 3 is characterized in that: the length of described first side and second side is all greater than the length of the first end plate and the second end plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110152918 CN102303266B (en) | 2011-06-09 | 2011-06-09 | Special protractor for taper hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110152918 CN102303266B (en) | 2011-06-09 | 2011-06-09 | Special protractor for taper hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102303266A CN102303266A (en) | 2012-01-04 |
| CN102303266B true CN102303266B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110152918 Expired - Fee Related CN102303266B (en) | 2011-06-09 | 2011-06-09 | Special protractor for taper hole |
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| CN (1) | CN102303266B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868497A (en) * | 2012-12-11 | 2014-06-18 | 上海昌吉地质仪器有限公司 | High-precision angle measuring device |
| CN104697423B (en) * | 2015-04-01 | 2017-07-18 | 航天精工股份有限公司 | The gauge and measuring method of counterbore angle |
| CN106181582A (en) * | 2016-08-25 | 2016-12-07 | 芜湖恒隆汽车转向系统有限公司 | A kind of oblique plate angle of bevel measurement apparatus |
| CN106403758B (en) * | 2016-11-23 | 2018-12-25 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of conical surface dimension measuring implement and its application method |
| CN106940161A (en) * | 2017-04-14 | 2017-07-11 | 实用动力(中国)工业有限公司 | A kind of taper measurer and its application method |
| CN109798823A (en) * | 2018-11-22 | 2019-05-24 | 中国航发贵州红林航空动力控制科技有限公司 | It is a kind of for measuring the device of plane inclined hole depth |
| CN110514167B (en) * | 2019-08-09 | 2021-04-20 | 江苏理工学院 | Taper and major diameter detection tool for taper hole |
| CN110617762B (en) * | 2019-10-30 | 2021-04-13 | 江苏理工学院 | Taper hole angle and angular deviation measuring instrument |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1411911A (en) * | 1919-07-01 | 1922-04-04 | Desbains Antoine | Measuring device |
| DE946483C (en) * | 1953-08-13 | 1956-08-02 | Fritz Georg Benkendorf | Cone knife |
| DE19961232C1 (en) * | 1999-12-18 | 2001-05-03 | Krupp Bilstein Gmbh | Chamfer angle measurer for chamfered bore has rail pivoted to end of measuring finger inserted in bore and contacted by measuring sensor coupled to measuring dial |
| US6457248B1 (en) * | 2000-07-10 | 2002-10-01 | John E. Rishton | Measurement of inclination between spaced-apart workpiece surfaces |
| CN101556131B (en) * | 2009-05-22 | 2011-02-02 | 河北理工大学 | Special angle gauge for outer cone |
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2011
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Granted publication date: 20130424 Termination date: 20140609 |