CN209399931U - A kind of straight line rotating grating ruler - Google Patents
A kind of straight line rotating grating ruler Download PDFInfo
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- CN209399931U CN209399931U CN201920093159.0U CN201920093159U CN209399931U CN 209399931 U CN209399931 U CN 209399931U CN 201920093159 U CN201920093159 U CN 201920093159U CN 209399931 U CN209399931 U CN 209399931U
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- grating ruler
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Abstract
The utility model relates to measuring tool technical fields, and in particular to a kind of straight line rotating grating ruler is mounted on linear rotating motor.The straight line rotating grating ruler improves the structure of grating scale while retaining and carrying out high-precision position and angle measurement to linear rotating motor, it does not need linear guide and swivel bearing and disposes linear grating ruler item and code-disc grating ruler reading head respectively, it is arranged using linear grating ruler item and code-disc grating scale item in sphere of movements for the elephants type and integrates the outer surface for being integrally attached to mounting shell, make linear grating ruler item and code-disc grating scale item simultaneously as rotor and mounting shell move synchronously, simplify the mechanical structure of linear rotating motor, reduce the size of linear rotating motor, the straight line rotating grating ruler runs straight line positioning resolution and is not less than 0.1 micron order, operation rotation angular resolution is not less than 0.1 degree of grade, it can be applied in high-precision product manufacturing equipment.
Description
Technical field
The utility model relates to measuring tool technical fields, and in particular to a kind of straight line rotating grating ruler.
Background technique
Traditional linear rotating motor internal structure is complicated comprising: stator, rotor, straight line rotary liner, rotation spline
Bearing, linear guide, stator are fixedly connected with motor shaft, and straight line rotary liner is fixedly connected with motor shaft, and rotor and straight line revolve
Shaft, which is held, to be fixedly connected, and linear guide is fixedly connected with linear grating ruler item, and linear grating ruler item detects the linear motion of rotor
Displacement, rotation spline bearing are fixedly connected with code-disc grating scale item, and code-disc grating scale item detects the rotary motion angle of rotor；
In addition, traditional linear rotating motor, using linear grating ruler item and code-disc grating scale separate arrangement, separate arrangement needs
Linear grating ruler item is disposed using linear guide, swivel bearing and the support of bearing dispose code-disc grating scale reading head, and structure is multiple
Miscellaneous, the volume of linear rotating motor is larger.Traditional line rotating electric machine is limited to complicated mechanical structure, biggish volumetric constraint
It is unfavorable for linear rotating motor answering extensively in industrial high-precision product process equipment in the usage range of industrial circle
With.
In consideration of it, overcoming the above defect in the prior art, providing the new straight line rotating grating ruler of one kind becomes this field
Technical problem urgently to be resolved.
Summary of the invention
The purpose of this utility model is that in view of the above drawbacks of the prior art, providing a kind of straight line rotating grating ruler.
The purpose of this utility model can be realized by technical measures below:
The utility model provides a kind of straight line rotating grating ruler, which is mounted on linear rotating motor
On,
The linear rotating motor includes: motor housing, rotor and electric machine main shaft in the motor housing,
The electric machine main shaft is fixedly connected with the motor housing, and the rotor is sheathed on the outside of the electric machine main shaft；
The straight line rotating grating ruler include: between the motor housing and the rotor and with the motor
Mounting shell that the outer diameter of rotor is fixedly connected, is mounted on the motor at the grating scale item for being fixed at the mounting shell outer surface
The linear grating ruler reading head and code-disc grating ruler reading head of inner surface of outer cover, the linear grating ruler reading head and code-disc grating
Ruler reading head is oppositely arranged with the grating scale item and inductively measures to the scale on the grating scale item；
When the rotor is for linear motion along the axial direction of the electric machine main shaft, the mounting shell drives the grating scale
Item is moved synchronously with the rotor, the phase of the linear motion of the linear grating ruler reading head measurement linear rotating motor
To displacement；When the rotor rotates along the circumferential direction of the electric machine main shaft, the mounting shell drives the grating
Ruler item is moved synchronously with the rotor, the rotary motion of the code-disc grating ruler reading head measurement linear rotating motor
Relatively rotate angle.
Preferably, the section of the mounting shell is rounded.
Preferably, what the inner surface of the motor housing was offered for accommodating the linear grating ruler reading head is first recessed
Slot and the second groove for accommodating the code-disc grating ruler reading head.
Preferably, the grating scale item includes multiple ruler modules in sphere of movements for the elephants type.
Preferably, the ruler module includes: the linear grating ruler item being axially arranged along the mounting shell and along the peace
The code-disc grating scale item that dress shell is circumferentially arranged.
Preferably, the linear grating ruler reading head and the linear grating ruler item are oppositely arranged and to the linear grating
Scale on ruler item is inductively measured, and the code-disc grating ruler reading head and the code-disc grating scale item are oppositely arranged and to institute
The scale stated on code-disc grating scale item is inductively measured.
Preferably, the linear rotating motor is equipped with connector, and the connector is sheathed on the outer of the electric machine main shaft
It is connect on diameter and respectively with the rotor, the mounting shell.
Preferably, the connector includes: channel for wearing for the electric machine main shaft, first connecting portion and along described
The second connecting portion that first connecting portion periphery extends outward, one end of the rotor and the first connecting portion are fixed to be connected
It connects, one end of the mounting shell is fixedly connected with the second connecting portion.
Preferably, the straight line rotating grating ruler further includes the control module on the motor housing, the control
Module is communicated to connect with the linear grating ruler reading head, the code-disc grating ruler reading head respectively, and the linear grating ruler is read
Several are given data transfer to the control module respectively with the code-disc grating ruler reading head, and the control module is according to institute
State the motion state of rotor described in measurement data Real-time Feedback.
Preferably, the control module includes processing unit, and the processing unit is according to the measurement data and prediction number
It is compensated and corrected according to matching, the control module carries out real according to motion state of the compensating approach result to the rotor
When control.
The straight line rotating grating ruler of the utility model is retaining to the high-precision position of linear rotating motor progress and angle
The structure that grating scale is improved while measurement, does not need setting linear guide and swivel bearing, grating scale item are integrally attached to
The outer surface of mounting shell, and as rotor and mounting shell move synchronously, the mechanical structure of linear rotating motor is simplified,
Reduce the size of linear rotating motor.
Detailed description of the invention
Fig. 1 is that the straight line rotating grating ruler of the utility model is mounted on the schematic perspective view on linear rotating motor.
Fig. 2 is that the straight line rotating grating ruler of the utility model is mounted on the side view on linear rotating motor.
Fig. 3 is that the straight line rotating grating ruler of the utility model is mounted on the top view on linear rotating motor.
Fig. 4 is the schematic perspective view of the straight line rotating grating ruler of the utility model.
Fig. 5 is the side view of the straight line rotating grating ruler of the utility model.
Fig. 6 is the top view of the straight line rotating grating ruler of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
Embodiment is described in further detail the utility model.It should be appreciated that specific embodiment described herein is only used to solve
The utility model is released, is not used to limit the utility model.
Hereinafter, many aspects of the utility model will be more fully understood with reference to attached drawing.Component in attached drawing may not
It is drawn to scale.Alternatively, it is preferred that emphasis is clearly demonstrate the component of the utility model.In addition, several views in the accompanying drawings
In figure, identical appended drawing reference indicates corresponding part.
Word " exemplary " as used herein or " illustrative " expression are used as example, example or explanation.It retouches herein
Stating any embodiment for " exemplary " or " illustrative " to be not necessarily to be construed as is preferred relative to other embodiment or has
Benefit.All embodiments described below are illustrative embodiments, and providing these illustrative embodiments is to make
Those skilled in the art are obtained to make and use embodiment of the disclosure and be expected to be not intended to limit the scope of the present disclosure, the disclosure
Range is defined by the claims.In other embodiments, well known feature and method is described in detail so as not to obscure this
Utility model.For purpose described herein, term " on ", "lower", "left", "right", "front", "rear", "vertical", "horizontal" and
Its derivative words is related by the utility model oriented with such as Fig. 1.Moreover, have no intent to by above technical field, background technique,
Any theoretical limitation expressed or implied provided in summary of the invention or detailed description below.It should also be clear that being shown in the accompanying drawings
It is that the utility model limited in the following claims is conceived with specific device described in following discussion book and process
Simple examples embodiment.Therefore, specific size relevant to presently disclosed embodiment and other physical features should not be by
It is construed as limiting, unless claims are separately clearly stated.
The embodiments of the present invention provide a kind of straight line rotating grating ruler, which is retaining to straight
Line rotating electric machine carries out the structure that grating scale is improved while high-precision position and angle measurement, traditional separate arrangement
Grating scale installs linear grating ruler item using linear guide, and swivel bearing and the support of bearing install code-disc grating ruler reading head；This
Straight line rotating grating ruler in utility model embodiment does not need linear guide and swivel bearing and disposes linear grating ruler item respectively
With code-disc grating ruler reading head, it is arranged using linear grating ruler item and code-disc grating scale item in sphere of movements for the elephants type and integrates an entirety
It is fixed on the outer surface of mounting shell, makes linear grating ruler item and code-disc grating scale item simultaneously as rotor and mounting shell are made together
Step movement, simplifies the mechanical structure of linear rotating motor, reduces the size of linear rotating motor, the straight line rotating grating ruler
It runs straight line positioning resolution and is not less than 0.1 micron order, operation rotation angular resolution is not less than 0.1 degree of grade, can be applied to height
In precision products manufacturing equipment.
Fig. 1 to Fig. 3 shows a kind of straight line rotating grating ruler, and referring to Figure 1 to Fig. 3, straight line rotating grating ruler 20 is installed
On linear rotating motor 10.
Wherein, referring to Figure 1 and Fig. 2, linear rotating motor 10 include: motor housing 101, rotor 102 and motor
Main shaft 103, wherein rotor 102 and electric machine main shaft 103 are set in motor housing 101, electric machine main shaft 103 and motor housing
101 are fixedly connected, and rotor 102 is sheathed on the outside of electric machine main shaft 103；Linear rotating motor 10 is two-freedom motor,
Rotor 102 can be achieved at the same time to be rotated along the axial direction of electric machine main shaft 103 circumferential direction for linear motion and along electric machine main shaft 103
Movement.
Referring to Figure 1 to Fig. 6, straight line rotating grating ruler 20 includes: mounting shell 201, grating scale item 202, linear grating ruler
Reading head 203 and code-disc grating ruler reading head 204, wherein mounting shell 201 is set between motor housing 101 and rotor 102
And be fixedly connected with the outer diameter of rotor 102, grating scale item 202 is fixed at 201 outer surface of mounting shell, 201 band of mounting shell
Dynamic grating scale item 202 is acted as with rotor 102 to move synchronously, linear grating ruler reading head 203 and code-disc grating scale reading
First 204 are installed in 101 inner surface of motor housing and are oppositely arranged with grating scale item 202, for the quarter on grating scale item 202
Degree is inductively measured, and in the present embodiment, linear grating ruler reading head 203 and code-disc grating ruler reading head 204 are relative to electricity
Machine rotor 102 is in stationary state, does not move with mounting shell 201, and straight line rotating grating ruler 20 can measure motor simultaneously
The rotational angle of displacement and rotary motion that rotor 102 moves along a straight line.
When rotor 102 is for linear motion along the axial direction of electric machine main shaft 103, grating scale item 202 is with rotor 102
It is moved synchronously with mounting shell 201, linear grating ruler reading head 203 measures the opposite position of the linear motion of linear rotating motor 10
Shifting amount；When rotor 102 rotates along the circumferential direction of electric machine main shaft 103, grating scale item 202 with rotor 102 with
Mounting shell 201 moves synchronously, and rotating grating ruler reading head 204 measures the relative rotation of the rotary motion of linear rotating motor 10
Angle.
Further, fig. 4 to fig. 6 is referred to, the section of mounting shell 201 is rounded, and grating scale item 202 is in sphere of movements for the elephants type,
It is fixed on the outer surface of mounting shell 201；Further, grating scale item 202 includes multiple ruler modules in sphere of movements for the elephants type, ruler item
Module includes: the linear grating ruler (not shown) being axially arranged along mounting shell 201 and is circumferentially arranged along mounting shell 201
Code-disc grating scale (not shown).In the present embodiment, linear grating ruler item and the integrated entirety of code-disc grating scale item are solid
It is scheduled on the outer surface of mounting shell 201, makes linear grating ruler item and code-disc grating scale item simultaneously with rotor 102 and mounting shell
201 move synchronously, and simplify the mechanical structure of linear rotating motor 10, reduce the size of linear rotating motor 10.
Further, referring to Figure 1 and Fig. 3, it is recessed that the inner surface of motor housing 101 offers the first groove 1010 and second
Slot 1011, the first groove 1010 is for accommodating linear grating ruler reading head 203, and the second groove 1011 is for accommodating code-disc grating scale
Reading head 204；Linear grating ruler reading head 203 and linear grating ruler item be oppositely arranged and to the scale on linear grating ruler item into
Row inductively measures, and code-disc grating ruler reading head 204 and code-disc grating scale item are oppositely arranged and to the scale on code-disc grating scale item
It is inductively measured.
Further, linear grating ruler reading head 203 and code-disc grating ruler reading head 204 by light source, convergent lens, refer to
Show grating, photoelectric cell and adjustment mechanism composition.Light source is irradiated on grating scale item 202, each ruler module is by light pair
Linear grating ruler reading head 203 and code-disc grating ruler reading head 204, linear grating ruler reading head 203 and code-disc light should be reflected back
Relative shift and rotary motion of the grid ruler reading head 204 according to the linear motion of the corresponding measurement rotor 102 of reflection light
Relative rotation angle.
On the basis of the above embodiments, in the present embodiment, referring to Figure 1 to Fig. 3, linear rotating motor 10, which is equipped with, to be connected
Fitting 30, connector 30 are sheathed on the outer diameter of electric machine main shaft 103 and connect respectively with rotor 102, mounting shell 201.
Further, referring to Figure 1 and Fig. 2, connector 30 include: the channel 301 worn for power supply machine main shaft 103,
First connecting portion 302 and the second connecting portion 303 extended outward along 302 periphery of first connecting portion, one end of electric machine main shaft 103
It is fixed in motor housing 101, the other end of electric machine main shaft 103 is successively arranged in the channel of rotor 102, connector 30
301, one end of rotor 102 is fixedly connected with first connecting portion 302, and one end of mounting shell 201 and second connecting portion 303 are solid
Fixed connection, connector 30 are used to mounting shell 201 being fixed on rotor 102, further strengthen mounting shell 201 and motor turns
The stability of 102 connection of son, it is ensured that mounting shell 201 drives grating scale item 202 that can steadily synchronize with rotor 102
Movement, to guarantee the stability and accuracy of measurement.
Further, Fig. 2 is referred to, the inner wall of motor housing 101 is formed with from inner wall along 103 axial direction of electric machine main shaft
The fixing groove 1012 that part extends, fixing groove 1012 are used to accommodate one end of electric machine main shaft 103, and keep electric machine main shaft 103 fixed
In motor housing 101.
On the basis of the above embodiments, in the present embodiment, straight line rotating grating ruler 20 further includes being set to motor housing 101
On control module (not shown), further, control module be set to motor housing 101 inner surface on, control module
It establishes and communicates to connect with linear grating ruler reading head 203, code-disc grating ruler reading head 204 respectively, linear grating ruler reading head 203
With code-disc grating ruler reading head 204 by data transfer to control module, control module is according to measurement data Real-time Feedback electricity
The motion state of machine rotor 102.
Specifically, the relative shift that linear grating ruler reading head 203 moves along a straight line the rotor 102 of measurement transmits
To control module, the case where control module Real-time Feedback rotor 102 moves along a straight line, code-disc grating ruler reading head 204 will be surveyed
The relative rotation angle of 102 rotary motion of rotor of amount is transferred to control module, control module Real-time Feedback rotor
The case where 102 rotary motion.
Further, control module includes processing unit (not shown), and processing unit is according to measurement data and prediction
Data Matching compensates and corrects, and control module carries out real-time according to motion state of the compensating approach result to rotor 102
Control, further increases the measurement accuracy of straight line rotating grating ruler 20.
Specifically, the relative shift and the opposite of rotary motion that processing unit moves along a straight line according to rotor 102 turn
Dynamic angle, is matched and is compensated with the relative rotation angle of the relative shift of the linear motion of prediction and rotary motion and repaired
Just, control module carries out real-time control according to linear motion and rotary motion situation of the compensating approach result to rotor 102.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of straight line rotating grating ruler, is mounted on linear rotating motor, which is characterized in that
The linear rotating motor includes: motor housing, rotor and electric machine main shaft in the motor housing, described
Electric machine main shaft is fixedly connected with the motor housing, and the rotor is sheathed on the outside of the electric machine main shaft；
The straight line rotating grating ruler include: between the motor housing and the rotor and with the rotor
Outer diameter be fixedly connected mounting shell, be fixed at the mounting shell outer surface grating scale item, be mounted on the motor housing
The linear grating ruler reading head and code-disc grating ruler reading head of inner surface, the linear grating ruler reading head and code-disc grating scale are read
Several are oppositely arranged with the grating scale item and inductively measure to the scale on the grating scale item；
When the rotor is for linear motion along the axial direction of the electric machine main shaft, the mounting shell drive the grating scale item with
The rotor moves synchronously, the opposite position of the linear motion of the linear grating ruler reading head measurement linear rotating motor
Shifting amount；When the rotor rotates along the circumferential direction of the electric machine main shaft, the mounting shell drives the grating scale item
It is moved synchronously with the rotor, the code-disc grating ruler reading head measures the opposite of the rotary motion of linear rotating motor
Rotational angle.
2. straight line rotating grating ruler according to claim 1, which is characterized in that the section of the mounting shell is rounded.
3. straight line rotating grating ruler according to claim 1, which is characterized in that the inner surface of the motor housing offers
Second for accommodating the first groove of the linear grating ruler reading head and for accommodating the code-disc grating ruler reading head is recessed
Slot.
4. straight line rotating grating ruler according to claim 1, which is characterized in that the grating scale item includes multiple in " field "
The ruler module of font.
5. straight line rotating grating ruler according to claim 4, which is characterized in that the ruler module includes: along the peace
Columella is filled to the linear grating ruler item of setting and the code-disc grating scale item being circumferentially arranged along the mounting shell.
6. straight line rotating grating ruler according to claim 5, which is characterized in that the linear grating ruler reading head with it is described
Linear grating ruler item is oppositely arranged and inductively measures to the scale on the linear grating ruler item, and the code-disc grating scale is read
Several are oppositely arranged with the code-disc grating scale item and inductively measure to the scale on the code-disc grating scale item.
7. straight line rotating grating ruler according to claim 1, which is characterized in that the linear rotating motor is equipped with connection
Part, the connector are sheathed on the outer diameter of the electric machine main shaft and connect respectively with the rotor, the mounting shell.
8. straight line rotating grating ruler according to claim 7, which is characterized in that the connector includes: for described in confession
Channel, first connecting portion and the second connecting portion extended outward along the first connecting portion periphery that electric machine main shaft is worn, institute
The one end for stating rotor is fixedly connected with the first connecting portion, and one end of the mounting shell is fixed with the second connecting portion
Connection.
9. according to claim 1 to straight line rotating grating ruler described in 8 any one, which is characterized in that the straight line rotates light
Grid ruler further includes the control module on the motor housing, and the control module is read with the linear grating ruler respectively
Head, code-disc grating ruler reading head communication connection, the linear grating ruler reading head and the code-disc grating ruler reading head point
Data transfer is not given to the control module, control module motor according to the measurement data Real-time Feedback turns
The motion state of son.
10. straight line rotating grating ruler according to claim 9, which is characterized in that the control module includes processing unit,
The processing unit is matched with prediction data according to the measurement data and is compensated and corrected, and the control module is repaired according to compensation
Positive result carries out real-time control to the motion state of the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093159.0U CN209399931U (en) | 2019-01-18 | 2019-01-18 | A kind of straight line rotating grating ruler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920093159.0U CN209399931U (en) | 2019-01-18 | 2019-01-18 | A kind of straight line rotating grating ruler |
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| CN209399931U true CN209399931U (en) | 2019-09-17 |
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| CN201920093159.0U Active CN209399931U (en) | 2019-01-18 | 2019-01-18 | A kind of straight line rotating grating ruler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668513A (en) * | 2019-01-18 | 2019-04-23 | 国奥科技(深圳)有限公司 | A kind of straight line rotating grating ruler |
-
2019
- 2019-01-18 CN CN201920093159.0U patent/CN209399931U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668513A (en) * | 2019-01-18 | 2019-04-23 | 国奥科技(深圳)有限公司 | A kind of straight line rotating grating ruler |
| CN109668513B (en) * | 2019-01-18 | 2024-01-12 | 国奥科技(深圳)有限公司 | Linear rotation grating ruler |
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