CN203375975U - Novel high-precision shaft-angle-encoding coupling device - Google Patents
Novel high-precision shaft-angle-encoding coupling device Download PDFInfo
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- CN203375975U CN203375975U CN201320456495.XU CN201320456495U CN203375975U CN 203375975 U CN203375975 U CN 203375975U CN 201320456495 U CN201320456495 U CN 201320456495U CN 203375975 U CN203375975 U CN 203375975U
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- shaft
- circular groove
- precision
- rotation axis
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Abstract
The utility model discloses a novel high-precision shaft-angle-encoding coupling device which comprises a rotating shaft body, a reference plate and an independent encoder. A circular groove is formed at one end of the rotating shaft body, the center line of the circular groove is superposed with the axis of a rotating shaft, the bottom of the circular groove is aligned with a bearing middle vertical plane of a support bearing of the rotating shaft, the reference plate is fixedly connected with the bottom of the circular groove, and a transmission shaft of the independent encoder is coupled with the reference plate via a flexible coupling shaft. The novel high-precision shaft-angle-encoding coupling device reduces or eliminates most influence of deformation of the rotating shaft on shaft angle transmission; and within the rotation scope of the rotating shaft, and error amount of angle transmission is stable, which is helpful for system error correction, improves precision of shaft angle transmission, and can be widely applied to fields of large-aperture antennae and high-precision heavy machinery.
Description
Technical field
The utility model relates to a kind of novel high-precision shaft encode coupling arrangement, is applicable to bearing span more greatly and, again to the exigent equipment of shaft angle transmission precision, can be widely used in the fields such as high precision heavy-duty machinery and large-scale antenna.
Background technology
The shaft encode of large aperture antenna and most big machineries all adopts shaft-position encoder is connected with rotation axis 2 axle heads at present, as shown in Figure 1.Adopt this connection, when rotation axis bearings A, B point span are very large and axle load W when very heavy again, rotation axis will occur bending and deformation, thereby produce radial displacement b and corner α at axle head.For main equipment, 50 meters above antennas of bore for example, approximately 30～40 meters or larger of its bearings spans, the radial displacement b that bending shaft produces can reach several millimeters; In most cases simultaneously, structure that this kind of equipment forms rotation axis is not all directions symmetry, so radially displacement b and corner α change with the axle stiffness variation in the rotation axis rotary course.Therefore, when shaft-position encoder is connected with the rotation axis axle head, radial displacement b and corner α will bring error to the shaft angle transmission, and are difficult to adopt machinery and data correcting method significantly to reduce, and cause the shaft angle transmission precision not meet the demands.
The utility model content
The purpose of this utility model is to avoid the weak point in the above-mentioned background technology and a kind of high precise shaft-angle coding coupling arrangement that the shaft angle transmission precision requires needs that meets is provided.
The purpose of this utility model is achieved in that
A kind of novel high-precision shaft encode coupling arrangement, comprise rotation axis body, datum plate and absolute coding device, it is characterized in that: the end at the rotation axis body offers circular groove, the center line of circular groove and the axis of rotation axis coincide, and the stressed middle vertical plane of the bottom land of circular groove and rotation axis spring bearing flushes; Datum plate is fixedly connected at the bottom land of circular groove, and the transmission shaft of absolute coding device is connected with datum plate by flexible coupling spindle.
Wherein, described datum plate is fixedly connected at the bottom land of circular groove by levelling bolt and gib screw.
Described flexible coupling spindle comprises tubular shaft and reed-type shaft coupling, and the reed-type shaft coupling is packed in an end of tubular shaft.
Described absolute coding device comprises shaft-position encoder, and output shaft and the transmission shaft of shaft-position encoder link.
The utility model is compared with background technology has following advantage:
1. the utility model has solved the shortcoming and defect that background technology reflects, when the shaft-position encoder tie point is placed in bearing middle vertical plane place (Fig. 1 A point), radial deformation is almost eliminated, adopt flexible coupling spindle again decrease pivot angle distortion α to the disturbance of absolute coding device, adopt again accurately machined absolute coding device (containing shaft-position encoder), just can realize that between rotation axis and shaft-position encoder, the high precision corner transmits.Reduction or major part have been eliminated the impact of rotation axis distortion on the shaft angle transmission, and in the rotation axis slewing area, angle transmission error value is steady simultaneously, and this will be conducive to the systematic error correction and improve the shaft angle transmission precision.
2. produce in the moderate finite deformation situation at rotation axis, adopt the utility model, scrambler installation, easy to adjust.
3. adopt the utility model to reduce or major part has been eliminated the rotation axis distortion, almost eliminated the radial force acted on scrambler, can improve scrambler serviceable life.
The accompanying drawing explanation
Fig. 1 is rotation axis distortion schematic diagram.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is flexible coupling spindle structural representation of the present utility model.
Fig. 4 is absolute coding apparatus structure schematic diagram of the present utility model.
In Fig. 2: 1 is the bearing seat combination, and 2 is rotation axis, and 3 is datum plate, and 4 is that rotation axis spring bearing, 5 is flexible coupling spindle, and 6 is the adjusting process cover, and 7 is fixed cover, and 8 is the absolute coding device, and 9 is levelling bolt, and 10 is gib screw.
In Fig. 3: 11 is tubular shaft, and 12 is the reed-type shaft coupling.
In Fig. 4: 13 is transmission shaft, and 16 is the axle sleeve combination, and 14 is that shaft coupling, 15 is shaft-position encoder.
Embodiment
With reference to Fig. 2, Fig. 3 and Fig. 4, the utility model is described in further detail.
The utility model comprises rotation axis body, datum plate 3 and absolute coding device 8, an end at the rotation axis body offers and circular groove, the center line of circular groove and the axis of rotation axis coincide, and the stressed middle vertical plane of the bottom land of circular groove and rotation axis spring bearing 4 flushes; Datum plate 3 is fixedly connected at the bottom land of circular groove, and the transmission shaft 13 of absolute coding device 8 is connected with datum plate 3 by flexible coupling spindle 5.Described datum plate 3 is fixedly connected at the bottom land of circular groove by levelling bolt 9 and gib screw 10.
Flexible coupling spindle 5 comprises tubular shaft 11 and reed-type shaft coupling 12, and reed-type shaft coupling 12 is packed in an end of tubular shaft 11.Described absolute coding device comprises shaft-position encoder 15, and the output shaft of shaft-position encoder 15 and transmission shaft 13 link.
In embodiment, reed-type shaft coupling 12 is at circumferencial direction and radially have larger rigidity, only allows axially to produce deflection angle.
In embodiment, shaft-position encoder 15 is installed on absolute coding device 8, and in absolute coding device 8, transmission shaft 13, axle sleeve combination 16 and shaft coupling 14 all need the high precision manufacture.Shaft-position encoder 15 can connect by shaft coupling 14 according to its structure difference, also can directly be sleeved on transmission shaft 13.
Embodiment specifically installs, adjustment process is as follows:
(1) first will datum plate 3 bottom lands that just are loaded on the circular groove on rotation axis 2, more flexible coupling spindle 5 is loaded on datum plate to 3;
(2) with adjusting process cover 6, datum plate 3 is connected with flexible coupling spindle 5;
(3) under the rotation axis rotary state, surveying process sleeve external diameter end points F footpath with clock gauge jumps, by adjusting levelling bolt and the gib screw adjustment on datum plate, (this error amount depends on system accuracy requirement and spindle deformation situation to make the external diameter end points F footpath jumping of adjusting process cover be less than the specification error value, this example is for being less than the 0.05mm left and right), the fixed reference plate;
(4) fixed cover 7 is installed, clock gauge is fixed on to adjusting process and puts, measure and adjust fixed cover 7 installation seam E footpaths jumpings and be less than specification error value (situation is with (3));
(5) will adjust qualified absolute coding device (containing scrambler) and be arranged on fixed cover, and its output shaft will be docked with flexible coupling spindle;
(6) remove adjusting process cover, installation;
(7) detect the shaft encode precision;
(8) inspection is surveyed result and is repeated (3)～(6) step, until system accuracy meets the demands.
Claims (4)
1. a novel high-precision shaft encode coupling arrangement, comprise rotation axis body, datum plate (3) and absolute coding device (8), it is characterized in that: the end at the rotation axis body offers circular groove, the center line of circular groove and the axis of rotation axis coincide, and the stressed middle vertical plane of the bottom land of circular groove and rotation axis spring bearing flushes; Datum plate (3) is fixedly connected at the bottom land of circular groove, and the transmission shaft of absolute coding device (8) is connected with datum plate (3) by flexible coupling spindle (5).
2. a kind of novel high-precision shaft encode coupling arrangement according to claim 1, it is characterized in that: described datum plate (3) is fixedly connected at the bottom land of circular groove by levelling bolt (9) and gib screw (10).
3. a kind of novel high-precision shaft encode coupling arrangement according to claim 1, it is characterized in that: described flexible coupling spindle (5) comprises tubular shaft (11) and reed-type shaft coupling (12), and reed-type shaft coupling (12) is packed in an end of tubular shaft (11).
4. a kind of novel high-precision shaft encode coupling arrangement according to claim 1, it is characterized in that: described absolute coding device (8) comprises shaft-position encoder (15), the output shaft of shaft-position encoder (15) and transmission shaft (13) link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456495.XU CN203375975U (en) | 2013-07-30 | 2013-07-30 | Novel high-precision shaft-angle-encoding coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456495.XU CN203375975U (en) | 2013-07-30 | 2013-07-30 | Novel high-precision shaft-angle-encoding coupling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203375975U true CN203375975U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320456495.XU Expired - Fee Related CN203375975U (en) | 2013-07-30 | 2013-07-30 | Novel high-precision shaft-angle-encoding coupling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203375975U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092154A (en) * | 2016-05-31 | 2016-11-09 | 中航光电科技股份有限公司 | A kind of deep water rotary connector |
| CN106092155A (en) * | 2016-05-31 | 2016-11-09 | 中航光电科技股份有限公司 | A kind of rotary connector |
-
2013
- 2013-07-30 CN CN201320456495.XU patent/CN203375975U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092154A (en) * | 2016-05-31 | 2016-11-09 | 中航光电科技股份有限公司 | A kind of deep water rotary connector |
| CN106092155A (en) * | 2016-05-31 | 2016-11-09 | 中航光电科技股份有限公司 | A kind of rotary connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140101 Termination date: 20200730 |