CN102759423A - Gear ring of non-contactable torque sensor and processing method thereof - Google Patents
Gear ring of non-contactable torque sensor and processing method thereof Download PDFInfo
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- CN102759423A CN102759423A CN2012102750592A CN201210275059A CN102759423A CN 102759423 A CN102759423 A CN 102759423A CN 2012102750592 A CN2012102750592 A CN 2012102750592A CN 201210275059 A CN201210275059 A CN 201210275059A CN 102759423 A CN102759423 A CN 102759423A
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- gear ring
- torque sensor
- contact torque
- teeth groove
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- 239000000463 material Substances 0.000 claims abstract description 10
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- 238000000227 grinding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000012545 processing Methods 0.000 abstract description 11
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- 238000013461 design Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000006698 induction Effects 0.000 description 6
- 230000005294 ferromagnetic effect Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000005498 polishing Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
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Abstract
The invention provides a gear ring of a non-contactable torque sensor and a processing method thereof and belongs to the technical field of automobile manufacturing. The gear ring non-contactable torque sensor solves the problem that the existing non-contactable torque sensor is complicated in the processing technology and high in manufacturing cost. The gear ring of the non-contactable torque sensor comprises a tubular body, wherein arc-shaped gear grooves are circumferentially arranged on the end surface of the body, the direction of the arc-shaped axes of the gear grooves is identical to the radial direction of the tubular body, and the gear grooves are evenly distributed on the lateral wall of the body. The processing method of the gear ring includes: A, material choosing and blanking; B, clamping: enabling the end surfaces of two blank materials to be adhered with each other and coaxially fixed on a drilling bed, and enabling the lateral walls of the blank materials to face to a drilling head; and C, drilling: drilling holes by using the adhering border line of the two blank materials as the drilling central line. By means of the processing method, manufacture cost is effectively reduced, and processing accuracy of the gear grooves is ensured.
Description
Technical field
The invention belongs to field of automobile, relate to the gear ring and the job operation thereof of a kind of gear ring and gear ring job operation, particularly a kind of non-contact torque sensor.
Background technology
Automobile electric booster steering system is called for short EPS; Since the proposition eighties in last century and using; With its fuel-efficient energy-saving and environmental protection, safe, simple in structure, be convenient to device and maintenance; Reach evident characteristics such as power steering is provided as required, improved the static state and the dynamic property of automobile significantly, replacing the automobile hydraulic electric power steering system has gradually become a kind of trend.
Since 21 century, widespread use EPS servo steering systems such as domestic and international car, little car, commercial car, new-energy automobile.What popularize is to turn to pillar, pinion wheel booster type, tooth bar booster type, the up-to-date circulating ball type of releasing again.But the EPS electric boosting steering system that is any pattern all must the configuration torque sensor.Torque sensor is vital parts in the EPS system, the distortion of torque signal, hysteresis, discrete stability and the security that directly influences the automobile steering manipulation.
Along with the technology of EPS electric boosting steering system is gradually improved and promotes, the torque sensor of this system configuration is also brought in constant renewal in thereupon and is promoted.The EPS torque sensor has following four kinds of patterns both at home and abroad at present: potentiometric transducer, Pierre's disc type sensor, aluminium magnetism-isolating loop formula sensor, gear ring magnetic induction sensor; Wherein potentiometric transducer and Pierre's disc type sensor are touch sensor, and magnetism-isolating loop formula sensor and gear ring magnetic induction sensor then belong to non-contacting sensor.Non-contacting sensor is simple in structure because of it, adopts the contactless form of magnetic induction, and performance is superior to touch sensor.And the gear ring magnetic induction sensor is to popularize the most at present and technological precedence, and Japanese EPS takes the lead in releasing and extensively being adopted by the Japanese car of Japanese car and homemade joint production.
Contactless gear ring magnetic induction sensor comprises: plate and a middle gear ring and two heel teeth circles are sent in output shaft, intermediate shaft, torque arm, inductive coil assembly, change; The technological requirement of these three gear rings is high; Make and processing difficulties, processing cost is high, has increased the manufacturing cost of torque sensor.By traditional design method, two heel teeth circle tooth Shape Design are trapezoidal, and middle gear ring tooth Shape Design is trapezoidal or rectangle.This design has brought great difficulty to processing.Under this design conditions, three gear rings can only be used two kinds of method moulding: one, cold extrusion or powder metallurgy sintering; Two, the pipe material is machined to trapezoidal or rectangle.The former manufacturing accuracy is low, causes material and position error not to reach technical requirement.The latter causes processing cost high, and is difficult for reaching the technical requirement that profile of tooth is uniformly distributed with.
Summary of the invention
The objective of the invention is to have the problems referred to above, proposed the gear ring and the job operation thereof of the very easy non-contact torque sensor of a kind of processing to existing technology.
The object of the invention can be realized through following technical proposal: a kind of gear ring of non-contact torque sensor; Comprise body in a tubular form; Circumferentially offer curved teeth groove on the end face of said body, the arc axle center of described teeth groove overlaps and is distributed on the sidewall of body with the radial direction of body.
For solving the gear ring difficult processing, the problem that precision is low at first will be understood gear ring role in sensor construction.Non-contact torque sensor has three gear rings: heel teeth circle I, heel teeth circle II, middle gear ring; Be fixed on heel teeth circle I on the output shaft; Middle gear ring is fixed on (intermediate shaft is connected with input shaft bottom rigidity) on the intermediate shaft with heel teeth circle II, gets into coil block magnetic field I during assembling and forms medium magnetic field (magnetic field II).The magnetic field temperature of this kind magnetic induction sensor equals the magnetic field I and adds the magnetic field II, and the center line of two groups of coils of inductive coil assembly distributes the center line of two groups of gear rings of alignment.Formed preceding moving-coil inductance value design load and the quiet circle inductance value design load in back respectively, and two-value equates.All ferromagnetic mediums all are nonlinear mediums, and air or polypropylene are non-ferromagnetic mediums.Have only non-ferromagnetic medium to be linear,, stipulated to keep in two groups of gear rings the designed distance of non-ferromagnetic medium in the design so will keep the stable of magnetic field inductance value with consistent.The magnetic hysteresis of non-ferromagnetic medium and area have the corresponding linear relation.So flute profile is the trapezoidal or rectangle that standard is uniformly distributed with in three former designs of gear ring.So; Make the teeth groove of three gear rings into from trapezoidal or rectangle the camber of standard; In the linear relationship that does not change medium, keep original media area and teeth groove under the condition that is uniformly distributed with characteristic of gear ring, the gear ring of arc shaped groove also is on the non-contact torque sensor that can be useful in.
In the gear ring of above-mentioned non-contact torque sensor, described teeth groove is semicircular arc.Semicircular arc is easy to process, and size is controlled easily.
In the gear ring of above-mentioned non-contact torque sensor, the spacing between the described two adjacent teeth groove equal teeth groove A/F 1.5-2 doubly.
In the gear ring of above-mentioned non-contact torque sensor, the material of described body is the 20CrMnTi steel.The 20CrMnTi steel is well behaved cemented steel, and quenching degree is high.Behind carburizing and quenching, have hard and wear-resisting surface and tough and tensile heart portion.Have higher low-temperature impact toughness, weldability is medium.The machinable performance is good after the normalizing, and special machining deformation is small.Be used to make the cross section less than the bearing at a high speed of 30mm, medium or heavy load impacts and the strength member of friction, like gear, gear ring, gear shaft cross etc.
A kind of gear ring job operation of non-contact torque sensor is characterized in that it comprises the steps:
A, selection, blanking: choose with gear ring in the identical tubing of external diameter, tubing is cut into the blank of predetermined length; Can use cutting machine that tubing is cut off, and reserve process redundancy.
B, clamping: the end face of two sections blanks is fitted and coaxial being fixed on the drilling machine, and the sidewall of blank is over against drill bit; Anchor clamps require and can coaxial fixing and two end faces of two semi-manufacture can be fitted tightly together, and fit tightly is the degree of accuracy of guaranteeing to improve in the subsequent processing teeth groove processing together.
C, boring: the boundary line of fitting with two blanks is the center line of boring; Hole, drill a hole after, two sections blanks are rotated equal angular in the same way; Institute's gyration equals the number in 360 °/hole, and it is porose until having bored with boring to be rotated further blank by specification.With the boundary line is the center line of boring, and the teeth groove that processes so symmetry is consistent, and equal portions boring on semi-manufacture are circumferential, makes teeth groove circumferentially to be uniformly distributed with.
In the gear ring job operation of above-mentioned non-contact torque sensor, the tubing in the described steps A is cold drawn tubing.The stability of material of cold drawn tubing is high, can guarantee machining precision.
In the gear ring job operation of above-mentioned non-contact torque sensor, carry out the grinding end face after the described steps A.Needs are processed end face flat and polishing of teeth groove, the end face of two tubing that process can be fit together better with the lathe car.
In the gear ring job operation of above-mentioned non-contact torque sensor, technology reams after the described step C.The edge of boring back Hui Zaikong stays more burr, removes burr through fraising technology.
In the gear ring job operation of above-mentioned non-contact torque sensor, the product after the described blank machine-shaping can be heel teeth circle or middle gear ring.Because the teeth groove of heel teeth circle and middle gear ring is identical, so can once accomplish the manufacturing of heel teeth circle and middle gear ring simultaneously.
In the gear ring job operation of above-mentioned non-contact torque sensor, the axial line of the axial line of drill bit and blank is perpendicular among the described step C.
Compared with prior art, the gear ring quality of this non-contact torque sensor is high, and size is controlled easily; Its job operation can effectively reduce manufacturing cost; Guarantee the machining precision of teeth groove, reach the technical requirement of non-contacting sensor, make its serviceability stable more and reliable.
Description of drawings
Fig. 1 is the structural representation of gear ring.
Fig. 2 is two structural representations after the gear ring match-drill.
Among the figure, 1, body; 2, teeth groove; 3, boundary line.
Embodiment
As shown in Figure 1, the gear ring of non-contact torque sensor comprises body 1 in a tubular form, radially offers curved teeth groove 2 on the end of body 1, and teeth groove 2 has 8 and circumference uniform distribution on end face.
Specifically, as shown in Figure 2, teeth groove 2 is semicircular arc, and the material of gear ring is the 20CrMnTi steel.Teeth groove 2 numbers are 8 and are circumference uniform distribution that the spacing between the two adjacent teeth groove 2 equals A/F 1.5-2 times of teeth groove 2.
The gear ring job operation of this non-contact torque sensor comprises the steps:
A, employing cutting off machine cut cold drawn tubing;
B, employing lathe carry out the turning processing to the end face of blank;
B, the end face after adopting grinding machine to turning polish;
D, the anchor clamps of standard have been designed and produced;
E, two blanks are fixed on the anchor clamps of drilling machine, make its coaxial fixing and end face tightly paste dead mutually;
F, be the circumferentially some equally borings of center line with the boundary line of both ends of the surface, the axial line of drill bit and the axial line of body are perpendicular;
The burr that g, cleaning boring back produce, teeth groove machines, and obtains the finished product gear ring.
This gear ring job operation cost is low, and manufacturing procedure is simple, and controllability is high, and the gear ring dimensional accuracy that processes through above-mentioned steps is high, and teeth groove is evenly distributed.During assembling, a heel teeth circle and middle gear ring are fixed on the intermediate shaft, and another heel teeth circle is fixed on the output shaft.The advantage of this non-contacting sensor is contactless, not wearing and tearing, long service life.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used terms such as body 1, teeth groove 2, boundary line 3 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. the gear ring of a non-contact torque sensor; Comprise body (1) in a tubular form; Circumferentially offer curved teeth groove (2) on the end face of said body (1), the arc axle center of described teeth groove (2) overlaps and is distributed on the sidewall of body (1) with the radial direction of body (1).
2. the gear ring of non-contact torque sensor according to claim 1 is characterized in that, described teeth groove (2) is semicircular arc.
3. the gear ring of non-contact torque sensor according to claim 2 is characterized in that, the spacing between the described two adjacent teeth groove (2) equal teeth groove (2) A/F 1.5-2 doubly.
4. according to the gear ring of claim 1 or 2 or 3 described non-contact torque sensors, it is characterized in that the material of described body (1) is a 20CrMnT i steel.
5. the gear ring job operation of a non-contact torque sensor is characterized in that it comprises the steps:
A, selection, blanking: choose with gear ring in the identical tubing of external diameter, tubing is cut into the blank of predetermined length;
B, clamping: the end face of two sections blanks is fitted and coaxial being fixed on the drilling machine, and the sidewall of blank is over against drill bit;
C, boring: the boundary line (3) of fitting with two blanks is the center line of boring; Hole, drill a hole after, two sections blanks are rotated equal angular in the same way; Said angle equals the number in 360 °/hole, and it is porose until having bored with boring to be rotated further blank by specification.
6. the gear ring job operation of non-contact torque sensor according to claim 5 is characterized in that, the tubing in the described steps A is cold drawn tubing.
7. the gear ring job operation of non-contact torque sensor according to claim 6 is characterized in that, carries out the grinding end face after the described steps A.
8. according to the gear ring job operation of claim 5 or 6 or 7 described non-contact torque sensors, it is characterized in that technology reams after the described step C.
9. the gear ring job operation of non-contact torque sensor according to claim 8 is characterized in that, the product after the described blank machine-shaping can be heel teeth circle or middle gear ring.
10. the gear ring job operation of non-contact torque sensor according to claim 9 is characterized in that, the axial line of the axial line of drill bit and blank is perpendicular among the described step C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275059.2A CN102759423B (en) | 2012-08-04 | 2012-08-04 | Gear ring of non-contactable torque sensor and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275059.2A CN102759423B (en) | 2012-08-04 | 2012-08-04 | Gear ring of non-contactable torque sensor and processing method thereof |
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| Publication Number | Publication Date |
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| CN102759423A true CN102759423A (en) | 2012-10-31 |
| CN102759423B CN102759423B (en) | 2015-02-18 |
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| CN201210275059.2A Expired - Fee Related CN102759423B (en) | 2012-08-04 | 2012-08-04 | Gear ring of non-contactable torque sensor and processing method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020073757A1 (en) * | 2000-09-21 | 2002-06-20 | Takahiro Sanada | Method of manufacturing a crown-shaped component |
| CN2709710Y (en) * | 2004-02-19 | 2005-07-13 | 刘运武 | Drive gear capable of changing gear and without noise |
| CN101844306A (en) * | 2010-06-17 | 2010-09-29 | 株洲齿轮有限责任公司 | Processing method of annular gear of thin-wall member |
| CN202165474U (en) * | 2011-06-30 | 2012-03-14 | 陈义明 | Movable gear coupling |
| CN102528387A (en) * | 2010-12-31 | 2012-07-04 | 大连冶金轴承股份有限公司 | Method for machining yawing gear ring |
| CN102528406A (en) * | 2012-03-13 | 2012-07-04 | 江国辉 | Method for processing automobile synchronizer gear ring blank |
| CN102581579A (en) * | 2012-03-30 | 2012-07-18 | 湖南衡利重工机械有限公司 | Process for producing standard sections of tower cranes |
-
2012
- 2012-08-04 CN CN201210275059.2A patent/CN102759423B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020073757A1 (en) * | 2000-09-21 | 2002-06-20 | Takahiro Sanada | Method of manufacturing a crown-shaped component |
| CN2709710Y (en) * | 2004-02-19 | 2005-07-13 | 刘运武 | Drive gear capable of changing gear and without noise |
| CN101844306A (en) * | 2010-06-17 | 2010-09-29 | 株洲齿轮有限责任公司 | Processing method of annular gear of thin-wall member |
| CN102528387A (en) * | 2010-12-31 | 2012-07-04 | 大连冶金轴承股份有限公司 | Method for machining yawing gear ring |
| CN202165474U (en) * | 2011-06-30 | 2012-03-14 | 陈义明 | Movable gear coupling |
| CN102528406A (en) * | 2012-03-13 | 2012-07-04 | 江国辉 | Method for processing automobile synchronizer gear ring blank |
| CN102581579A (en) * | 2012-03-30 | 2012-07-18 | 湖南衡利重工机械有限公司 | Process for producing standard sections of tower cranes |
Non-Patent Citations (1)
| Title |
|---|
| 江西省农业机械管理局: "《拖拉机修理工读本》", 31 January 1983, article "拖拉机修理工读本", pages: 157-158 * |
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| CN102759423B (en) | 2015-02-18 |
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Granted publication date: 20150218 |