CN111561856A - Tool for detecting height difference between bottom surfaces of motor and impeller and detection method thereof - Google Patents
Tool for detecting height difference between bottom surfaces of motor and impeller and detection method thereof Download PDFInfo
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- CN111561856A CN111561856A CN202010426825.5A CN202010426825A CN111561856A CN 111561856 A CN111561856 A CN 111561856A CN 202010426825 A CN202010426825 A CN 202010426825A CN 111561856 A CN111561856 A CN 111561856A
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- motor
- hole
- impeller
- supporting
- pointer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
Abstract
The invention relates to the field of automobile part detection, and discloses a tool for detecting height difference between the bottom surfaces of a motor and an impeller, which comprises a fixed motor base for vertically placing the motor, a measuring block and an impeller disc installed on a motor shaft, wherein a pointer is installed on the upper surface of the impeller disc, a scale mark is arranged on the measuring block, a first through hole is formed in the middle of the fixed motor base, four second through holes are distributed around the first through hole, supporting legs are respectively arranged on four corners of the fixed motor base, a motor supporting plate is installed at the bottom of the motor, the diameter of the first through hole is larger than that of a cylindrical boss on the motor supporting plate, and the second through holes correspond to first threaded holes formed in the motor supporting plate one by one. The invention also discloses a detection method of the tool for detecting the height difference between the bottom surfaces of the motor and the impeller. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller and the detection method thereof can directly read the height, do not need conversion of the height difference, have high precision and are convenient to operate.
Description
Technical Field
The invention relates to the field of automobile part detection, in particular to a tool for detecting the height difference between the bottom surfaces of a motor and an impeller and a detection method thereof.
Background
After the motor and the impeller are assembled, the bottom surface of the motor (the bottom surface of the motor refers to a planar structure for supporting the bottom of the motor) is generally called as a motor supporting plate and is not completely parallel to the bottom surface of the impeller, sometimes, the height of one side of the motor supporting plate and the height of the bottom surface of the impeller (the specific position is the edge of the bottom surface of the impeller and is also called as the bottom surface of the impeller) are larger than the height of the other side of the motor supporting plate and the height of the bottom surface of the impeller, so that subsequent assembly operation cannot be carried out, and in production, the condition is called as abnormal clearance.
At this moment, we need to judge whether the motor problem or the impeller problem causes the clearance to be abnormal, because the impeller related dimension can not be measured in the general factory (the impeller is an injection molding, the possibility of the problem is also small), so we can measure the motor related dimension-the height between the two ends of the motor supporting plate and the horizontal plane, and calculate the height difference, and then convert the height difference into: assuming that the motor is installed with the impeller, the height difference between the bottom surface of the impeller and the plane of the motor supporting plate (calculated by the diameter of the impeller and the length of the motor supporting plate). If the converted height difference value is large, the gap abnormality is mainly caused by the motor problem, and otherwise, the gap abnormality is mainly caused by the impeller problem. Currently, our specific measurement methods are: detaching an impeller on a motor shaft, placing the motor on a three-coordinate device in an inverted manner, and measuring the height of one end of a motor supporting plate and the height of a horizontal plane by using the three-coordinate device; and then measuring the height of the other end of the motor supporting plate and the horizontal plane.
At present, a simple tool is not available for directly measuring the height between a motor supporting plate and a horizontal plane, and generally, the height is measured by a three-coordinate device. The disadvantages of this are:
1. when the three-coordinate equipment is used for measurement, the motor is inverted, but the motor is easy to topple over after being inverted, so that the motor needs to be supported on a measurement table through other tools to prevent the motor from toppling over, and the operation is very inconvenient;
2. the purchase cost of the three-coordinate equipment is very high;
3. the three-coordinate equipment needs to be operated by a special person, so that the labor cost is increased;
4. the three-coordinate equipment occupies a large space and generally needs an independent room, so that the three-coordinate equipment cannot be used at once at the production line, and the whole detection process is very long;
5. after measurement, the calculated height difference value is small, so that the height difference value cannot be directly used, and conversion is needed, so that the accuracy of a final result is poor in the process;
6. when three standard devices are used for measurement, the height of a certain point on the motor support plate and the height of the horizontal plane are actually measured. However, the motor supporting plate is curved, and the motor supporting plate is provided with a high point and a low point, so that when different points are selected for measurement, the measurement results are different, and the measurement results are not convincing and distorted.
Disclosure of Invention
The invention aims to provide a tool for detecting the height difference between the bottom surfaces of a motor and an impeller and a detection method thereof, aiming at the defects of the technology, wherein the tool is easy to read the height difference, high in precision and convenient to operate, and the height difference does not need to be converted.
In order to achieve the purpose, the tool for detecting the height difference between the bottom surfaces of the motor and the impeller comprises a fixed motor base for fixing the motor, a measuring block and an impeller disc arranged on a motor shaft, wherein a pointer is arranged on the upper surface of the impeller disc, a scale mark is arranged on the measuring block in the up-and-down floating range of the pointer, a first through hole is formed in the middle of the fixed motor base, four second through holes are distributed around the first through hole, supporting legs are arranged on four corners of the fixed motor base respectively, a motor supporting plate is arranged at the bottom of the motor, the diameter of the first through hole is 1-1.5 mm larger than that of a cylindrical boss on the motor supporting plate, and the second through holes correspond to first threaded holes formed in the motor supporting plate one to one.
Preferably, the impeller disc comprises a circular support disc, a square pressing block and a support block vertically arranged on the support disc, a fifth through hole for the motor shaft to pass through is arranged in the middle of the support disc, the distance between one surface of the support block close to the fifth through hole and the center of the fifth through hole is 1-1.5 mm smaller than the radius of the fifth through hole, when the motor shaft passes through the fifth through hole, the motor shaft can be tightly attached to the support block after being pressed by the pressing block, the support block is provided with four transverse third threaded holes, the pressing block is provided with fourth through holes matched with the four third threaded holes, the pressing block passes through the fourth through hole and the third threaded holes through four screws and is fixed on the support block, one surface of the pressing block close to the support block is provided with an arc-shaped groove matched with the motor shaft, the motor shaft is prevented from moving to both sides in the locking process by the arc-shaped grooves.
Preferably, the pointer includes square pointer body and establishes the cone of pointer body one side, be equipped with two vertical sixth through-holes on the pointer body, the edge of supporting disk be equipped with two with sixth through-hole complex fourth screw hole.
Preferably, after the pointer is installed on the impeller disc, the distance between the tip of the cone and the center point of the impeller disc is the same as the radius size of the impeller assembled on the motor.
Preferably, still include motor assembly backup pad, motor assembly backup pad is L type structure, be equipped with two third through-holes on motor assembly backup pad's the diaphragm, two the centre of a circle line of third through-hole with the connecting wire of motor assembly backup pad diaphragm and riser is parallel, the third through-hole with establish two neighbours in fixed motor base below the supporting legs phase-match is fixed during the motor, make fixed motor base places perpendicularly, two neighbours on the fixed motor base the supporting legs insert two in the third through-hole, avoid fixed motor base falls.
Preferably, the supporting legs are fixed through second threaded holes formed in four corners of the fixed motor base.
Preferably, the height of the supporting legs is larger than the length of the motor shaft extending out of the motor supporting plate, so that the motor shaft is prevented from inclining to the top of the fixed motor base, and the motor can be stably placed on the fixed motor base for measurement.
Preferably, the measuring block is of an inverted T-shaped structure, and the measuring block is provided with scale marks.
The utility model provides a detect frock of motor and impeller bottom surface difference in height, includes following step:
A) firstly, horizontally placing a vertical plate of the motor assembling support plate, then vertically placing the fixed motor base, and inserting two adjacent supporting legs into the third through hole;
B) penetrating a cylindrical boss of the motor through the first through hole in the fixed motor base, and fixing the motor through the second through hole and the first threaded hole by using at least two screws;
C) taking the fixed motor base out of the motor assembling support plate, and horizontally placing the fixed motor base;
D) the pointer penetrates through the sixth through hole and the fourth threaded hole through two screws to be installed on the supporting plate, and the conical tip of the pointer faces outwards;
E) enabling a motor shaft of the motor to penetrate through a fifth through hole of the supporting plate, and using four screws to penetrate through the fourth through hole and a third threaded hole, fixing the pressing block on the supporting block, and enabling the pressing block and the supporting block to tightly hold the motor shaft;
F) placing the measuring block on the fixed motor base, moving the measuring block, rotating the impeller disc, finding the highest point or the lowest point on the measuring block pointed by the pointer in one side direction, and finding the lowest point or the highest point on the measuring block pointed by the pointer in the other side direction, so that the rough height difference between the highest point and the lowest point can be read out, wherein the precision of the rough height difference is determined by the density of scale marks on the measuring block, and the higher the density is, the higher the precision is;
G) after the impeller disc is used, the impeller disc is detached from the motor shaft, the motor is detached from the fixed motor base, the fixed motor base is placed on the vertical plate on the motor assembly supporting plate, the supporting disc, the measuring block and the screw are placed on the fixed motor base, and the pointer and the pressing block are placed on the supporting disc for storage.
Preferably, in step F), the tip of the conical body of the pointer is coated with a pigment, the pigment is printed on the measuring block (using the side of the measuring block without the graduation line), and the distance between the highest pigment point and the lowest pigment point is measured by using other tools (such as a vernier caliper), so that the precise height difference between the highest point and the lowest point can be obtained.
Compared with the prior art, the invention has the following advantages:
1. the operation process is simple and convenient;
2. the manufacturing cost of the tool is far lower than that of the existing three-coordinate equipment;
3. the operation can be carried out after the ordinary staff are simply trained, and a special person is not needed to take charge, so that the labor cost is saved;
4. the tool is small in size and can be directly placed on a line edge for use;
5. after measurement, the height difference can be directly measured or read out without conversion, so that the measurement precision is improved;
6. when the tool is used, the real assembly state is simulated, and the measured data is real and effective.
Drawings
FIG. 1 is an exploded view of a tool for detecting a height difference between a motor and the bottom surface of an impeller according to the present invention;
fig. 2 is a schematic structural diagram of a motor (the tool is not limited to a motor with the same appearance as that shown in the figure, and can be applied to the tool as long as a planar support structure exists at the bottom of the motor);
FIG. 3 is an exploded view of the stationary motor base of FIG. 1;
FIG. 4 is a schematic structural view of the motor mounting support plate of FIG. 1;
FIG. 5 is an exploded view of the impeller disc (with pointer) of FIG. 1;
FIG. 6 is a schematic view of the support disk and support block shown in FIG. 5;
FIG. 7 is a schematic structural diagram of the pointer of FIG. 1;
FIG. 8 is a schematic diagram of the measurement block of FIG. 1;
FIG. 9 is an assembled view of the motor mounted in a stationary motor base;
FIG. 10 is a schematic view of the assembly of the pointer into the support plate;
FIG. 11 is an assembled view of the motor locked by the hold down;
FIG. 12 is a schematic view of the tool during measurement;
fig. 13 is a schematic view of the tool after disassembly for storage.
The components in the figures are numbered as follows:
the device comprises a fixed motor base 1, a motor assembling support plate 2, an impeller disc 3, a pointer 4, a measuring block 5, a screw 6, a motor 7, a motor support plate 8, a first threaded hole 9, a cylindrical boss 10, a motor shaft 11, a first through hole 12, a second through hole 13, a support leg 14, a second threaded hole 15, a third through hole 16, a support plate 17, a support block 18, a pressing block 19, a fourth through hole 20, a third threaded hole 21, a fourth threaded hole 22, a fifth through hole 23, an arc-shaped groove 24, a sixth through hole 25, a pointer body 26, a cone 27 and scale marks 28.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in figures 1 and 2, the tool for detecting the height difference between the bottom surfaces of the motor and the impeller comprises a fixed motor base 1 for fixing a motor 7, a measuring block 5 and an impeller disc 3 arranged on a motor shaft 11, wherein a pointer 4 is arranged on the edge of the upper surface of the impeller disc 3, as shown in figure 8, the measuring block 5 is of an inverted T-shaped structure, a scale mark 28 is arranged on the measuring block 5 in the up-and-down floating range of the pointer 4, as shown in figure 3, a first through hole 12 is arranged in the middle of the fixed motor base 1, four second through holes 13 are distributed around the first through hole, four corners of the fixed motor base 1 are respectively provided with a supporting leg 14, the supporting legs 14 are fixed through second threaded holes 15 arranged on the four corners of the fixed motor base, the height of the supporting leg 14 is larger than the length of the motor shaft 11 extending out of a motor supporting plate 8, the diameter of the first through hole 12 is 1-1.5 mm larger than the diameter of, the second through holes 13 correspond to the first screw holes 9 provided in the motor support plate 10 one to one.
As shown in fig. 4, the present embodiment further includes a motor assembling support plate 2, the motor assembling support plate 2 is an L-shaped structure, two third through holes 16 are disposed on a transverse plate of the motor assembling support plate 2, a circle center connecting line of the two third through holes 16 is parallel to a connecting line of the transverse plate and a vertical plate of the motor assembling support plate 2, and the third through holes 16 are matched with two adjacent supporting legs 14 disposed below the fixed motor base 2.
Referring to fig. 5 and 6, the impeller disc 3 includes a circular support disc 17, a square pressing block 19 and a support block 18 vertically disposed on the support disc 17, a fifth through hole 23 for the motor shaft 11 to pass through is disposed in the middle of the support disc 17, a distance between one surface of the support block 18 close to the fifth through hole 23 and the center of the fifth through hole 23 is 1-1.5 mm smaller than a radius of the fifth through hole 23, four transverse third threaded holes 21 are disposed on the support block 18, a fourth through hole 20 matched with the four third threaded holes 21 is disposed on the pressing block 19, the pressing block 19 passes through the fourth through hole 20 and the third threaded hole 21 through four screws and is fixed on the support block 18, and an arc-shaped groove 24 matched with the motor shaft 11 is disposed on one surface of the pressing block 19 close to the support block 18.
Referring to fig. 7, the pointer 4 includes a square pointer body 26 and a cone 27 disposed on one side of the pointer body 26, two vertical sixth through holes 25 are disposed on the pointer body 26, two fourth threaded holes 22 engaged with the sixth through holes 25 are disposed on the edge of the support plate 17, and after the pointer 4 is mounted on the impeller plate 3, the distance between the tip of the cone 27 and the center point of the impeller plate 3 is the same as the radius of the impeller assembled on the motor.
The detection method of the tool for detecting the height difference between the bottom surfaces of the motor and the impeller in the embodiment comprises the following steps:
A) as shown in fig. 9, the vertical plate of the motor assembling support plate 2 is horizontally placed, and after the fixed motor base 1 is vertically placed, two adjacent supporting feet 14 are inserted into the third through hole 16;
B) the cylindrical boss 10 of the motor 7 penetrates through the first through hole 12 on the fixed motor base 1, and at least two screws penetrate through the second through hole 13 and the first threaded hole 9 to fix the motor 7;
C) taking the fixed motor base 1 out of the motor assembling support plate 2, and then horizontally placing the fixed motor base 1;
D) as shown in fig. 10, the pointer 4 is fixed on the impeller disc 3 with the cone 27 of the pointer 4 pointing outwards by using two screws through the sixth through hole 25 and the fourth threaded hole 22;
E) referring to fig. 11, the impeller disc 3 is placed on the motor shaft 11 of the motor 7, and the pressing block 19 is fixed on the supporting block 18 by using four screws, so that the pressing block 19 and the supporting block 18 tightly hold the motor shaft 11, and the impeller disc 3 is ensured not to slide down from the motor shaft 11;
F) referring to fig. 12, the measuring block 5 is placed on the fixed motor base 1, the measuring block 5 is moved, the impeller plate 3 is rotated, the highest point or the lowest point on the measuring block 5 pointed by the pointer 4 is found in one side direction, the lowest point or the highest point on the measuring block 5 pointed by the pointer 4 is found in the other side direction, and the rough height difference between the highest point and the lowest point can be read;
G) referring to fig. 13, after use, the impeller plate 3 is removed from the motor shaft 11, the motor 7 is removed from the fixed motor base 1, the fixed motor base 1 is placed on the motor assembly support plate 2 with the vertical plate horizontally placed, the measuring block 5, the support plate 17 and the screw 6 are placed on the fixed motor base 1, and the pointer 4 and the pressing block 19 are placed on the support plate 17 for storage.
In step F), the tip of the cone 27 of the pointer 4 is painted, the paint dots are printed on the measuring block 5 (the side without the scale lines 28), and the distance between the highest paint dot and the lowest paint dot is measured (a vernier caliper can be used), so that the precise height difference between the highest point and the lowest point can be obtained.
According to the tool for detecting the height difference between the bottom surfaces of the motor and the impeller and the detection method thereof, the height difference can be directly read by measuring the scales on the measuring block 5 or measuring the distance between the highest pigment point and the lowest pigment point on the measuring block 5, the measured value does not need to be converted, the operation is convenient, the manufacturing cost is far lower than that of the existing three-coordinate equipment, in addition, the tool can be operated by staff after simple training, the special person is not needed to take charge, the labor cost is saved, the tool is small in size, can be directly placed on line for use and storage, and the space is saved. When the tool is used, the real assembly state is simulated, and the measurement result is real and effective.
Claims (10)
1. The utility model provides a detect frock of motor and impeller bottom surface difference in height, includes fixed motor base (1) of fixed motor (7), its characterized in that: also comprises a measuring block (5) and an impeller disc (3) arranged on a motor shaft (11), the upper surface of the impeller disc (3) is provided with a pointer (4), the position of the measuring block (5) which is positioned in the up-down floating range of the pointer (4) is provided with a scale mark (28), a first through hole (12) is arranged in the middle of the fixed motor base (1), four second through holes (13) are distributed around the first through hole (12), four corners of the fixed motor base (1) are respectively provided with a supporting leg (14), a motor support plate (8) is arranged at the bottom of the motor (7), the diameter of the first through hole (12) is 1-1.5 mm larger than that of the cylindrical boss (10) on the motor support plate (8), the second through holes (13) correspond to the first threaded holes (9) formed in the motor supporting plate (8) one by one.
2. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 1, characterized in that: the impeller disc (3) comprises a circular supporting disc (17), a square pressing block (19) and a supporting block (18) vertically arranged on the supporting disc (17), a fifth through hole (23) for the motor shaft (11) to pass through is formed in the middle of the supporting disc (17), the distance between one surface, close to the fifth through hole (23), of the supporting block (18) and the center of the fifth through hole (23) is 1-1.5 mm smaller than the radius of the fifth through hole (23), four transverse third threaded holes (21) are formed in the supporting block (18), fourth through holes (20) matched with the four third threaded holes (21) are formed in the pressing block (19), the pressing block (19) penetrates through the fourth through hole (20) and the third threaded holes (21) through four screws and is fixed on the supporting block (18), and an arc-shaped through hole matched with the motor shaft (11) is formed in one surface, close to the supporting block (19), of the arc-shaped through hole (20) A groove (24).
3. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 2, is characterized in that: pointer (4) include square pointer body (26) and establish cone (27) of pointer body (26) one side, be equipped with two vertical sixth through-holes (25) on pointer body (26), the edge of supporting disk (17) be equipped with two with sixth through-hole (25) complex fourth screw hole (22).
4. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 3, wherein: after the pointer (4) is installed on the impeller disc (3), the distance between the tip of the cone (27) and the center point of the impeller disc (3) is the same as the radius of the impeller assembled on the motor.
5. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 3, wherein: still include motor assembly backup pad (2), motor assembly backup pad (2) are L type structure, be equipped with two third through-holes (16), two on the diaphragm of motor assembly backup pad (2) the centre of a circle line of third through-hole (16) with the line parallel of motor assembly backup pad (2) diaphragm and riser, third through-hole (16) with establish two are adjacent in fixed motor base (1) below supporting legs (14) phase-match.
6. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 1, characterized in that: the supporting legs (14) are fixed through second threaded holes (15) formed in four corners of the fixed motor base (1).
7. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 1, characterized in that: the height of the supporting leg (14) is larger than the length of the motor shaft (11) extending out of the motor supporting plate (8).
8. The tool for detecting the height difference between the bottom surfaces of the motor and the impeller according to claim 1, characterized in that: the measuring block (5) is of an inverted T-shaped structure, and scale marks (28) are arranged on the measuring block (5).
9. A detection method when the tool for detecting the height difference between the bottom surfaces of the motor and the impeller, as claimed in claim 5, 6, 7 or 8, is used, is characterized in that: the method comprises the following steps:
A) the vertical plate of the motor assembling support plate (2) is horizontally placed, the fixed motor base (1) is vertically placed, and two adjacent support legs (14) on the fixed motor base (1) are inserted into the third through holes (16);
B) the cylindrical boss (10) of the motor (7) penetrates through the first through hole (12) in the fixed motor base (1), and at least two screws penetrate through the second through hole (13) and the first threaded hole (9) to fix the motor (7);
C) taking the fixed motor base (1) out of the motor assembling support plate (2), and horizontally placing the fixed motor base (1);
D) the pointer (4) is arranged on the supporting plate (17) through two screws matched with the sixth through hole (25) and the fourth threaded hole (22), and the tip of a cone (27) of the pointer (4) faces outwards;
E) enabling a motor shaft (11) of the motor (7) to penetrate through the fifth through hole (23) in the supporting plate (17), and fixing the pressing block (19) on the supporting block (18) by using four screws, so that the pressing block (19) and the supporting block (18) tightly hold the motor shaft (11);
F) placing the measuring block (5) on the fixed motor base (1), moving the measuring block (5), rotating the impeller disc (3), finding the highest point or the lowest point on the measuring block (5) pointed by the pointer (4) in one side direction, and finding the lowest point or the highest point on the measuring block (5) pointed by the pointer (4) in the other side direction, so that the rough height difference between the highest point and the lowest point can be read;
G) after the impeller disc (3) is used, the motor shaft (11) is detached, the motor (7) is detached from the fixed motor base (1), the fixed motor base (1) is placed on the motor assembly supporting plate (2) with the vertical plate horizontally placed, the measuring block (5), the supporting disc (17) and the screw (6) are placed on the fixed motor base (1), and the pointer (4) and the pressing block (19) are placed on the supporting disc (17) for storage.
10. The detection method of the tool for detecting the height difference between the bottom surfaces of the motor and the impeller in use according to claim 9, is characterized in that: in the step F), paint is coated on the tip of the cone (27) of the pointer (4), the paint is printed on the measuring block (5) (on the side without the scale mark (28), and the distance between the highest paint point and the lowest paint point is measured, so that the accurate height difference between the highest point and the lowest point can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426825.5A CN111561856B (en) | 2020-05-19 | 2020-05-19 | Tool for detecting height difference between bottom surfaces of motor and impeller and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010426825.5A CN111561856B (en) | 2020-05-19 | 2020-05-19 | Tool for detecting height difference between bottom surfaces of motor and impeller and detection method thereof |
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| CN111561856A true CN111561856A (en) | 2020-08-21 |
| CN111561856B CN111561856B (en) | 2021-09-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053985A (en) * | 1976-04-21 | 1977-10-18 | Spentzas Nick E | Mechanical protractor |
| CN1542404A (en) * | 2003-07-28 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN202533056U (en) * | 2011-12-26 | 2012-11-14 | 三门峡中原量仪股份有限公司 | A worm tooth surface jump and M value detecting tool |
| CN102852728A (en) * | 2012-09-12 | 2013-01-02 | 江苏中蕴风电科技有限公司 | Tower tube type narrow-pipe wind-collecting wind turbine generator |
| CN104697414A (en) * | 2015-04-02 | 2015-06-10 | 安徽江淮汽车股份有限公司 | Detecting pin for stamping part hole position accuracy |
| CN205090963U (en) * | 2015-11-11 | 2016-03-16 | 三峡大学 | Rock shear failure face border drawing apparatus |
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2020
- 2020-05-19 CN CN202010426825.5A patent/CN111561856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4053985A (en) * | 1976-04-21 | 1977-10-18 | Spentzas Nick E | Mechanical protractor |
| CN1542404A (en) * | 2003-07-28 | 2004-11-03 | 中国科学院长春光学精密机械与物理研 | Absolute type matrix coding disk for exporting thirteen bits by utilizing three circle channels |
| CN202533056U (en) * | 2011-12-26 | 2012-11-14 | 三门峡中原量仪股份有限公司 | A worm tooth surface jump and M value detecting tool |
| CN102852728A (en) * | 2012-09-12 | 2013-01-02 | 江苏中蕴风电科技有限公司 | Tower tube type narrow-pipe wind-collecting wind turbine generator |
| CN104697414A (en) * | 2015-04-02 | 2015-06-10 | 安徽江淮汽车股份有限公司 | Detecting pin for stamping part hole position accuracy |
| CN205090963U (en) * | 2015-11-11 | 2016-03-16 | 三峡大学 | Rock shear failure face border drawing apparatus |
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|---|---|
| CN111561856B (en) | 2021-09-03 |
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