CN201803733U

CN201803733U - Coder with double-bearing mounting structure

Info

Publication number: CN201803733U
Application number: CN2010205561086U
Authority: CN
Inventors: 李鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-10-11
Filing date: 2010-10-11
Publication date: 2011-04-20
Anticipated expiration: 2020-10-11

Abstract

The utility model discloses a coder with a double-bearing mounting structure, which comprises a shaft, bearings, a mounting flange, a locking ring, a code disc base, a code disc and a locking screw, wherein, the mounting flange is a mounting substrate. The shaft is mounted on the mounting flange through bearings. The locking ring is annularly locked to the bearings for compressing the bearings. The code disc plate is matched with the shaft, and the edge of the code disc plate is compressed to an inner ring of the bearing. The code disc is adhibited on the code disc base. Furthermore the locking screw is adopted for being mounted at a tail end of the shaft through a dovetail groove on the shaft for pressurizing the shaft. The coder has a compact mounting structure and can minimize the dimension in the products with same performance. Simultaneously, under a precondition that a reliable mounting precision is ensured, the rigid mechanical structure can resist larger axial force and radial force so the compression resistance of the shaft is remarkably improved. The service life of the coder is prolonged and the sensing precision of the coder is improved.

Description

A kind of duplex bearing mounting structure scrambler

Technical field

The present invention relates to a kind of scrambler, relate in particular to the scrambler of a kind of duplex bearing, compact mounting structure.

Background technology

Scrambler can convert angular displacement or straight-line displacement to electric signal.For example, in automatic control system, scrambler is as the location positioning sensor, uses extremely extensively, and it has contactless, and the life-span is long, the bearing accuracy advantages of higher.

At present, the mounting means of conventional coders is not high to the requirement of strength of shafting structure, generally is to adopt industrial glue that axle and bearing directly are bonded to together.But in actual applications, if environment is abominable or the colloid poor quality, then occurs crackle easily and come off, it is badly damaged that the internal optics parts are produced, and influences optical sensibility, and then can't reach the requirement of high drag, accurate positioning and high life.

The scrambler that also has a kind of axial arranged structure, as position transducer, it comprises camshaft, CMPS Camshaft Position Sensor signal wheel, CMPS Camshaft Position Sensor and lid.CMPS Camshaft Position Sensor signal wheel is installed in the camshaft rear end, and camshaft and CMPS Camshaft Position Sensor signal wheel assembly are installed on the lid, and CMPS Camshaft Position Sensor is installed in the lid rear end.Because the tolerance clearance between CMPS Camshaft Position Sensor and the CMPS Camshaft Position Sensor signal wheel guarantees easily, reads the precision height of signal.In addition, this layout can make compact conformation.But there is following shortcoming in this mounting structure: 1, sensor and signal wheel still can be done radial motion along camshaft, causes sensing station generation deviation, and signal accuracy still can not be guaranteed; 2, camshaft is not strong to the resistant function of applied stress; 3, anti-environment capacity is poor, under the environment harsh conditions, can't reach infringement and the dust that the water yield of defence billow or strong jetting access arrangement causes and enter the structural infringement that causes, causes serviceable life short.

Summary of the invention

Deficiency at existing structure of installing encoders the purpose of this invention is to provide a kind of scrambler that adopts dual bearing structure, wherein comprises retaining ring and lock-screw bidirectional locking, makes axle and bearing be in the state of rigidity combination.On the one hand, guaranteeing under the prerequisite of reliable installation accuracy, can resist stronger axle (X-axis) to power and directly (Y-axis) to power; On the other hand, its compact conformation possesses the protective capacities of IP66, and size is almost minimum in similar performance product.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of duplex bearing mounting structure scrambler comprises axle, bearing, mounting flange, retaining ring, code-disc, lock-screw, encoder basement, and wherein, described mounting flange is for installing matrix, described axle by Bearing Installation on mounting flange; The retaining ring ring is fixed in bearing, is used for bearing is compressed; Encoder basement cooperates with axle, and the edge is pressed on bearing inner ring; Code-disc is bonded on the encoder basement; Described lock-screw is installed on shaft tail end, by the dovetail groove on the axle axle is exerted pressure.

Further preferably, described duplex bearing mounting structure scrambler also comprises a seal, and described sealing ring is fixed between described retaining ring and the bearing, is used to seal the slit between retaining ring and the bearing.

Further preferably, described code-disc is bonded on the encoder basement by seccotine.

Further preferably, described scrambler also comprises a shell and an electronic processing circuit, and described shell and electronic processing circuit are connected on the described mounting flange by the copper post.

Mounting structure of the present invention utilizes retaining ring and encoder basement to make and forms the mechanical rigid syndeton between bearing, axle, mounting flange, can not produce the parts of relative slip, and axle can only carry out circular motion.So mechanical connection makes axle obviously strengthen the resistivity of compelling force.Size reduces simultaneously, only needs the tolerance on fit of strict control encoder basement, just can obtain good precision.Moving components such as bearing all are enclosed in enclosure interior, and anti-environment capacity is strong, and increase serviceable life.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples:

Fig. 1 is the section of structure of the embodiment of the invention;

Fig. 2 is each ingredient schematic perspective view of the embodiment of the invention;

Fig. 3 is the scrambler stereographic map of the embodiment of the invention;

Fig. 4 is the scrambler rear view of the embodiment of the invention;

Fig. 5 is the coder side view of the embodiment of the invention;

Fig. 6 is the synoptic diagram of embodiment of the invention encoder applies in industrial control system.

The number in the figure explanation:

1. axle 2. bearings 3. mounting flanges 4. retaining rings 5. code-discs 6. seals

7. lock-screw 8. encoder basements 9. bronze medal posts 10. shells 11. electronic processing circuits

12. cable

Embodiment

As Fig. 1 is the section of structure of the embodiment of the invention.

A kind of duplex bearing mounting structure scrambler comprises axle 1, bearing 2, mounting flange 3, retaining ring 4, code-disc 5, lock-screw 7, encoder basement 8, and wherein, described mounting flange 3 is for installing matrix, and described axle 1 is installed on the mounting flange 3 by bearing 2; Simultaneously, retaining ring 4 rings are fixed in bearing 2, and the retaining ring 4 here is the threaded ring bodies of a circumference, is used for bearing 2 is compressed, and reduces the gap; And adopt a code-disc 5, and described code-disc is bonded on the encoder basement 8, and encoder basement 8 cooperates with axle 1, and the edge is pressed on ring in the bearing 2, adopts a lock-screw 7 simultaneously, and it is installed on axle 1 tail end by the dovetail groove on the axle 1, and axle is exerted pressure.

Thus, utilize retaining ring 4 and encoder basement 8, bearing 2, axle 1,3 of mounting flanges are formed the mechanical rigid syndeton, retaining ring 4 has been locked bearing 2 head ends, encoder basement 8 and lock-screw 7 and has further been locked axle 1 tail end, make and firmly connect between axle 1, mounting flange 3 and the bearing 2, do not have movable relatively space, axle 1 can only carry out circular motion.Compact conformation in the same performance product, can keep the size minimum; Simultaneously, guaranteeing that this rigid mechanical structure can be resisted stronger axial force and radial force under the reliable installation accuracy prerequisite, making the external compressive resistance of axle significantly strengthen, increasing the serviceable life and the sensing accuracy of encoding device.

Wherein, code-disc 5 is bonded on the encoder basement 8 by seccotine, further increases cement strength.

As shown in Figure 2, for scrambler each building block stereographic map is installed.Described scrambler also comprises a shell 10 and an electronic processing circuit 11, and described shell and electronic processing circuit are connected on the described mounting flange 3 by copper post 9.

As when retaining ring 7 compresses bearing 2, as gapped existence, also can pass through a seal 6, as oil sealing, seal 6 is placed retaining ring and bearing clearance, with closing gap.Make moving component such as bearing all be enclosed in enclosure interior, anti-environment capacity is strong, and increase serviceable life.Such structure has been guaranteed more, under rugged environment, under the environment as powerful entry and dust pollution, current also can't access arrangement in, and solid dust also can't enter, pollute the scrambler internals, has further improved sensing accuracy, has also increased the serviceable life of scrambler.

At industrial control field, scrambler extensively exists as position transducer, generally is used for detecting revolution or straight-line absolute position in control system, and its data generally are used to the feedback calculation controlled.

As shown in Figure 6, the embodiment of the invention is introduced embodiment 1 application of described scrambler in industrial control system.Equipment according to Fig. 6 connects, and scrambler links to each other with controller by cable 12, and its communication flow is as follows:

During initialization, system can carry out the parameter self check, by obtaining the initialization configuration information behind the reading external memory, if self check is not by then carrying out the fault processing that reports an error.After controller collects scrambler angle and number of turns information by the serial data circuit, by the user rule is set angle and number of turns information data are carried out logical process and integration.Controller changes into the standard external agreement with the data result of handling well, and whether monitoring bus is in busy state, after satisfying idle condition data is sent to bus by driver.

In the working control process, controller receives human-machine interaction data by external input devices such as intelligent display or handles; Obtain the scrambler current location data by bus; And calculate control information such as controlled quentity controlled variable by pre-set programs, control information is transferred to performance element such as driver by data line and constitutes feedback.

Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; be in order to make those skilled in the art can better understand this patent content; should not be construed as is restriction to this patent protection domain; change or modify so long as disclose spiritual any being equal to of being done, all fall into this patent protection domain according to this patent.

Claims

1. duplex bearing mounting structure scrambler, it is characterized in that: described scrambler comprises axle, bearing, mounting flange, retaining ring, encoder basement, code-disc and lock-screw, wherein, described mounting flange is for installing matrix, described axle by Bearing Installation on mounting flange, described retaining ring ring is fixed in bearing, is used for bearing is compressed; Described encoder basement cooperates with axle, and the edge is pressed on bearing inner ring, and described code-disc is bonded on the described encoder basement, and adopts described lock-screw, is installed on shaft tail end by the dovetail groove on the axle.

2. duplex bearing mounting structure scrambler according to claim 1, it is characterized in that: described scrambler also comprises a seal, described seal is installed between described retaining ring and the bearing, is used to seal the slit between retaining ring and the bearing.

3. duplex bearing mounting structure scrambler according to claim 2, it is characterized in that: described code-disc is bonded on the described encoder basement by seccotine.

4. according to any described duplex bearing mounting structure scrambler of claim 1 to 3, it is characterized in that: described scrambler also comprises a shell and an electronic processing circuit, and described shell and electronic processing circuit are connected on the described mounting flange by the copper post.