CN205190664U - Driving screw of ball type terminal surface is easily assembled to high accuracy - Google Patents
Driving screw of ball type terminal surface is easily assembled to high accuracy Download PDFInfo
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- CN205190664U CN205190664U CN201520881698.2U CN201520881698U CN205190664U CN 205190664 U CN205190664 U CN 205190664U CN 201520881698 U CN201520881698 U CN 201520881698U CN 205190664 U CN205190664 U CN 205190664U
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- driving screw
- sunk structure
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- face
- circular arc
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Abstract
The utility model provides a driving screw of ball type terminal surface is easily assembled to high accuracy, the terminal surface at the both ends of driving screw is equipped with the sunk structure, inside the directional driving screw of sunken direction of the sunk structure of every terminal surface of driving screw, the driving screw still includes two balls, two balls are arranged in respectively in the sunk structure of two terminal surfaces of driving screw, it is specific, every the diameter of ball is greater than the intermural distance in the biggest both sides of sunk structure. Adopt the utility model discloses, the circular arc of having solved current driving screw both ends is accomplished by machinery vehicle processing, because the restriction of processing principle, the sphericity of this circular arc is difficult to the guarantee to and the material of driving screw itself is easy cutting stainless steel, and this hardness that makes two circular arc is difficult to improve, finally causes the circular arc to wear and tear, the problem of motor life -span decline.
Description
Technical field
The utility model relates to micro-step motor field, particularly relates to the driving screw in micro-step motor, is specifically related to the driving screw of a kind of highi degree of accuracy easy component location guide ball-type end face.
Background technique
Today of life is entered at precision type instrument, micro-step motor is very universal in the utilization of every field, and driving screw is the critical component of micro-step motor, stepper motor rotarily drives driving screw screw thread rotation by rotor, again by screw-driven, the final straight line motion forming screw thread upper cap nut.
Due to above principle, driving screw needs to keep concentric with motor stator in stepper motor.In the prior art scheme, concentric with motor stator for ensureing driving screw, how driving screw two ends are processed as arc-shaped.When mounted, driving screw two ends are installed on two with in the axial concentric circular arc mounting hole of motor stator.
But these class methods have two shortcomings to be difficult to overcome completely: 1, the circular arc at driving screw two ends is machined by mechanical car, due to process principle restriction, the sphericity of this circular arc is difficult to ensure.2, consider working environment and difficulty of processing, the material of driving screw itself is free cutting stainless steel, and this makes the hardness of two circular arc be difficult to improve, and finally cause circular arc to wear and tear, electrical machinery life declines.
Model utility content
For solving the defect of driving screw in existing micro-step motor, the utility model provides the driving screw of a kind of highi degree of accuracy easy component location guide ball-type end face, the circular arc that can solve existing driving screw two ends is machined by mechanical car, due to process principle restriction, the sphericity of this circular arc is difficult to ensure, and the material of driving screw itself is free cutting stainless steel, and this makes the hardness of two circular arc be difficult to improve, circular arc is finally caused to wear and tear, the problem that electrical machinery life declines.
For solving the problems of the technologies described above, the utility model provides the driving screw of a kind of highi degree of accuracy easy component location guide ball-type end face, the end face at the two ends of described driving screw is provided with sunk structure, driving screw inside is pointed in the depression direction of the sunk structure of each end face of described driving screw, described driving screw also comprises two balls, described two balls are placed in the sunk structure of described driving screw two end faces respectively, concrete, and the diameter of each described ball is greater than the distance between the maximum two side of described sunk structure.
Further, each described sunk structure adopts brill Milling Machining mode to make.
Further, each described sunk structure is cone shape hole, and the taper head end of described cone shape hole points to the inside of driving screw.
Further, the diameter of the bottom surface of described cone shape hole is less than the diameter of described ball.
Further, described ball is wolfram steel ball.
Employing the beneficial effects of the utility model are:
A kind of needle shield that the utility model provides comprises: the end face at the two ends of described driving screw is provided with sunk structure, driving screw inside is pointed in the depression direction of the sunk structure of each end face of described driving screw, described driving screw also comprises two balls, described two balls are placed in the sunk structure of described driving screw two end faces respectively, concrete, the diameter of each described ball is greater than the distance between the maximum two side of described sunk structure, because ball is for process separately, thus the circular arc solving driving screw two ends is machined by mechanical car, due to process principle restriction, the sphericity of this circular arc is difficult to the problem ensured, further, ball can adopt the material different from driving screw material to process, wolfram steel preferably can be adopted to make, thus the material solving driving screw itself is free cutting stainless steel, this makes the hardness of two circular arc be difficult to improve, circular arc is finally caused to wear and tear, the problem that electrical machinery life declines.
Accompanying drawing explanation
The structural representation of the driving screw of a kind of highi degree of accuracy easy component location guide ball-type end face that Fig. 1 provides for the utility model;
Fig. 2 is the partial enlarged drawing of driving screw head end in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments, clear, complete explanation is carried out to the utility model.
As shown in Figure 1 and Figure 2, the utility model provides the driving screw of a kind of highi degree of accuracy easy component location guide ball-type end face, the end face at the two ends of driving screw 1 is provided with sunk structure, driving screw 1 inside is pointed in the depression direction of the sunk structure of each end face of driving screw 1, driving screw also comprises two balls 2, two balls 2 are placed in the sunk structure of driving screw 1 two end faces respectively, concrete, and the diameter of each ball 2 is greater than the distance between the maximum two side of sunk structure.
Further, on driving screw 1, each sunk structure all adopts brill Milling Machining mode to make, concrete, sunk structure is cone shape hole, and wherein, the taper head end of cone shape hole points to the inside of driving screw, ball is placed in cone shape hole by conical head ground, in order to prevent ball from embedding completely in cone shape hole, further, the diameter of the bottom surface of cone shape hole is less than the diameter of ball.
In order to improve the hardness of ball 2, preventing the hardness because of ball 2 not high, finally causing circular arc to wear and tear, the problem that electrical machinery life declines, further, the material of ball 2 adopts wolfram steel to make.
Although the utility model with preferred embodiment openly as above; but it is not for limiting the utility model; any those skilled in the art are not departing from spirit and scope of the present utility model; the Method and Technology content of above-mentioned announcement can be utilized to make possible variation and amendment to technical solutions of the utility model; therefore; every content not departing from technical solutions of the utility model; the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.
Claims (5)
1. the driving screw of a highi degree of accuracy easy component location guide ball-type end face, it is characterized in that, the end face at the two ends of described driving screw is provided with sunk structure, driving screw inside is pointed in the depression direction of the sunk structure of each end face of described driving screw, described driving screw also comprises two balls, described two balls are placed in the sunk structure of described driving screw two end faces respectively, concrete, and the diameter of each described ball is greater than the distance between the maximum two side of described sunk structure.
2. the driving screw of a kind of highi degree of accuracy as claimed in claim 1 easy component location guide ball-type end face, is characterized in that, each described sunk structure adopts brill Milling Machining mode to make.
3. the driving screw of a kind of highi degree of accuracy as claimed in claim 2 easy component location guide ball-type end face, is characterized in that, each described sunk structure is cone shape hole, and the taper head end of described cone shape hole points to the inside of driving screw.
4. the driving screw of a kind of highi degree of accuracy as claimed in claim 3 easy component location guide ball-type end face, is characterized in that, the diameter of the bottom surface of described cone shape hole is less than the diameter of described ball.
5. the driving screw of a kind of highi degree of accuracy as claimed in claim 1 easy component location guide ball-type end face, is characterized in that, described ball is wolfram steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520881698.2U CN205190664U (en) | 2015-11-06 | 2015-11-06 | Driving screw of ball type terminal surface is easily assembled to high accuracy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520881698.2U CN205190664U (en) | 2015-11-06 | 2015-11-06 | Driving screw of ball type terminal surface is easily assembled to high accuracy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205190664U true CN205190664U (en) | 2016-04-27 |
Family
ID=55783657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520881698.2U Active CN205190664U (en) | 2015-11-06 | 2015-11-06 | Driving screw of ball type terminal surface is easily assembled to high accuracy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205190664U (en) |
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2015
- 2015-11-06 CN CN201520881698.2U patent/CN205190664U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |