CN208313263U - The axial clearance detection device of ball screw assembly, - Google Patents
The axial clearance detection device of ball screw assembly, Download PDFInfo
- Publication number
- CN208313263U CN208313263U CN201820925704.3U CN201820925704U CN208313263U CN 208313263 U CN208313263 U CN 208313263U CN 201820925704 U CN201820925704 U CN 201820925704U CN 208313263 U CN208313263 U CN 208313263U
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- measured
- pedestal
- gland
- axle journal
- lead screw
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Abstract
The utility model discloses a kind of axial clearance detection devices of ball screw assembly, including the pedestal (1) for fixing lead screw to be measured, the gland (2) for fixing ball nut to be measured, the circumferential positioning pin (3) for limiting the pedestal (1) and the gland (2)；A pressure spring (4) are cased between the bottom surface (1.1) and the lower end surface of ball nut to be measured of the pedestal (1) on the lead screw to be measured；The pedestal (1) is equipped with through its bottom for installing and fixing the axle journal mounting hole (1.2) of lead screw axle journal to be measured；The hole axle of the axle journal mounting hole (1.2) is vertical with the bottom surface (1.1)；The utility model can assist detection to obtain the axial gap of ball screw assembly,.
Description
Technical field
The utility model relates to ball screw assembly, transmission technical fields, are especially a kind of axial gap of ball screw assembly,
Detection device.
Background technique
Ball screw assembly, is as actuated element efficiently, accurate.With ensuring smooth transmission, transmission efficiency height, high transmission accuracy
And the series of advantages such as long service life.Wherein high transmission accuracy be since its coefficient of rolling friction is small, can by nut with
Gap between lead screw is eliminated, and realizes that precompressed improved its contact rigidity later, to reach high-precision transmission.And in precompressed
Before, need effectively to control the gap between each single nut and lead screw, including radial clearance and axial gap, the survey of radial clearance
Amount can be obtained simply using the prior art, but the measurement of axial gap is convenient not as radial clearance to be easy, between axial direction
Gap refer to nut relative to lead screw the in axial direction small displacement of play back and forth in no any rotation, in industry or
In the field also it is not ready-made dedicated for detect axial gap measuring instrument or device.
Utility model content
The shortcomings that technical problem to be solved in the utility model is, overcomes the above prior art: a kind of user is provided
Just, the axial clearance detection device of accurate ball screw assembly, is measured.
The technical solution of the utility model is as follows: a kind of axial clearance detection device of ball screw assembly, including with
In the pedestal of fixation lead screw to be measured, the gland for fixing ball nut to be measured, the circumferential limit pedestal and the gland
Positioning pin；
A pressure spring is cased between the bottom surface of the pedestal and the lower end surface of ball nut to be measured on the lead screw to be measured；
The pedestal is equipped with through its bottom for installing and fixing the axle journal mounting hole of lead screw axle journal to be measured；It is described
The hole axle of axle journal mounting hole and the plane perpendicular；
Between the lead screw to be measured and the pedestal by be set to the lead screw axle journal to be measured end thread segment and locking
Nut is spirally connected fixation；
The roof of the gland is equipped with the threaded hole through end face thereon；The threaded hole and the axle journal mounting hole are same
Axis；
External thread section and the gland with the corresponding threaded holes of the ball nut to be measured by being provided thereon end
It is fixed.
The lower end surface of the pedestal is equipped with the counterbore for accommodating the lock nut；
The counterbore end face is vertical with the axis of the axle journal mounting hole；
The upper end of the pedestal and the gland are socketed；
The roof of the upper surface of the pedestal and the gland is equipped with the pin hole to match with the positioning pin；The pin hole
Axis is parallel with the axle journal mounting hole axis.
The bottom surface of the pedestal is parallel with its lower end surface.
The beneficial effects of the utility model are: between the utility model can assist detection to obtain the axial direction of ball screw assembly,
Gap, as the device manufacturers for using ball screw assembly, what is generally required is axial gap, so as in ball screw turns, spiral shell
When female commutation of linear motion back and forth, it can effectively be compensated, at present in the industry of professional production ball screw assembly, not had
Dedicated for detecting the measuring device or instrument of axial gap, therefore the utility model is not only contributed in production process to axial direction
The control in gap also has certain directive significance to client.
Detailed description of the invention
Fig. 1 is the schematic cross-sectional view of the utility model.
Specific embodiment
The utility model is described in further details with specific embodiment below, but the utility model be not only limited to
Lower specific embodiment.
Embodiment
As shown in Figure 1, a kind of axial clearance detection device of ball screw assembly, including the pedestal for fixing lead screw to be measured
1, for fixing gland 2, the circumferential positioning pin 3 for limiting the pedestal 1 and the gland 2 of ball nut to be measured；It is described to be measured
A pressure spring 4 is cased between the bottom surface 1.1 of the pedestal 1 and the lower end surface of ball nut to be measured on lead screw；On the pedestal 1
Equipped with the axle journal mounting hole 1.2 for being used to install and fix lead screw axle journal to be measured through its bottom；The axle journal mounting hole 1.2
Hole axle is vertical with the bottom surface 1.1；By being set to the lead screw axle journal to be measured end between the lead screw to be measured and the pedestal 1
Thread segment and lock nut 5 be spirally connected fixation；The roof of the gland 2 is equipped with the threaded hole 2.1 through end face thereon；It is described
Threaded hole 2.1 and 1.2 coaxial line of axle journal mounting hole；
The ball nut to be measured passes through the external thread section to match with the threaded hole 2.1 for being provided thereon end and the pressure
Lid 2 is fixed.The lower end surface of the pedestal 1 is equipped with the counterbore 1.3 for accommodating the lock nut 5；1.3 end face of counterbore with
The axis of the axle journal mounting hole 1.2 is vertical；The upper end of the pedestal 1 and the gland 2 are socketed, the 2 lower part inner hole of gland
It is covered in the upper end outer circle of the pedestal 1 after mounting and keeps coaxial, may be implemented to slide up and down cooperation；The pedestal 1
The roof of upper surface and the gland 2 is equipped with the coaxial pin hole to match with the positioning pin 3；The axis of the pin hole and the axis
1.2 axis of neck mounting hole is parallel；In order to improve precision, the pin hole and 3 size of positioning pin match, and positioning pin 3 is made to be inserted into pin hole
It can slide up and down, but gapless；Corresponding pin hole is settable multipair on the pedestal 1 and the gland 2, and simultaneously using more
A positioning pin 3 realizes that the pedestal 1 and the circumferential of the gland 2 limit, are axially directed.Under the bottom surface 1.1 of the pedestal 1 and its
End face is parallel.
When the utility model is used, after one end set compression spring 4 that lead screw to be measured is had to axle journal first, the axis of inserted base 1
In neck mounting hole 1.2, the axle journal end thread section of lead screw to be measured, into the counterbore 1.3, is sunk through the bottom of pedestal 1 described
Threads of lead screw section to be measured in hole 1.3 screws on the lock nut 5, and tightening fixes lead screw to be measured；Again will it is described to
It surveys ball nut and tightens fixation by being provided thereon the external thread section and the gland 2 to match with the threaded hole 2.1 at end；It will
The ball nut and gland 2 to be measured being fixed to each other rotates together and to lead screw moved beneath to be measured, until pressure spring 4 is pressurized slightly, it is right
Level is inserted into positioning pin 3 in the pin hole up and down on gland 2 and pedestal 1, at this moment completes assembling；Both by positioning pin 3 limit to
The relative rotation between ball nut and lead screw to be measured is surveyed, in turn ensures ball nut to be measured under the spring-force driven dual of pressure spring 4
Always it is in highest order；And ball nut to be measured can generate micro vertically downward together with gland 2 when by downward pressure
Displacement.
Detection 1:
Dial test indicator is beaten on 2 end face of gland, and reading is made to be zeroed, then with two hands pressing gland 2 together with rolling to be measured
Pearl nut, so that it is in lowest order, at this moment the amesdial on 2 end face of gland just has a reading A, when hand release, ball to be measured
Nut and gland 2 are returned to highest order, the reading zero of amesdial, then it is to be somebody's turn to do that the variation that amesdial is reflected, which reads A,
The axial gap of ball screw assembly, presses if not having to hand, but changes the counterweight of 100N, the reading of result and table all with it is upper
It states and is consistent with hand pressing, i.e., axial gap is A.
Detection 2:
The detection device is placed on regulatable press machine, dial test indicator is equally placed in end face and is zeroed, at this moment
Press pressure is adjusted to 500N, and is downwardly against on gland 2, at this moment the reading of table becomes B, when press machine is up lifted, table
Reading zero, then apply 500N responsive to axial force when ball nut and steel ball to be measured and lead screw to be measured between produced by
Flexible deformation be B-A.
Detection 3:
After similarly the pressure of press machine is adjusted to 2000N and is pressed with preceding detection 2, the reading for obtaining table is C, then C-A
The flexible deformation exactly generated under 2000N responsive to axial force.
Axial gap A=0.04, B=0.08, C=0.11. of this set ball screw assembly, of this detection
That is: the flexible deformation of 500N: 0.08-0.04=0.04 < 0.070；
The flexible deformation of 2000N: 0.11-0.04=0.07 < 0.3.
The above is only the feature implementation examples of the utility model, are not limited in any way to scope of protection of the utility model.
All technical solutions formed using same exchange or equivalence replacement, are all fallen within the utility model rights protection scope.
Claims (5)
1. a kind of axial clearance detection device of ball screw assembly, it is characterised in that: including the bottom for fixing lead screw to be measured
Seat (1), the gland (2) for fixing ball nut to be measured, the circumferential positioning pin for limiting the pedestal (1) and the gland (2)
(3)；One is cased between the bottom surface (1.1) and the lower end surface of ball nut to be measured of the pedestal (1) on the lead screw to be measured
Pressure spring (4)；The pedestal (1) is equipped with through its bottom for installing and fixing the axle journal mounting hole of lead screw axle journal to be measured
(1.2)；The hole axle of the axle journal mounting hole (1.2) is vertical with the bottom surface (1.1)；The lead screw to be measured and the pedestal (1)
Between be spirally connected fixation by the thread segment and lock nut (5) that are set to the lead screw axle journal to be measured end；The top of the gland (2)
Wall is equipped with the threaded hole (2.1) through end face thereon；The threaded hole (2.1) and axle journal mounting hole (1.2) coaxial line；
The ball nut to be measured passes through the external thread section to match with the threaded hole (2.1) for being provided thereon end and the gland (2)
It is fixed.
2. the axial clearance detection device of ball screw assembly, according to claim 1, it is characterised in that: the pedestal (1)
Lower end surface be equipped with counterbore (1.3) for accommodating the lock nut (5)；Counterbore (1.3) end face and the axle journal are pacified
The axis for filling hole (1.2) is vertical.
3. the axial clearance detection device of ball screw assembly, according to claim 1, it is characterised in that: the pedestal (1)
Upper end and the gland (2) be socketed.
4. the axial clearance detection device of ball screw assembly, according to claim 1, it is characterised in that: the pedestal (1)
Upper surface and the roof of the gland (2) be equipped with the pin hole that matches with the positioning pin (3)；The axis of the pin hole with it is described
Axle journal mounting hole (1.2) axis is parallel.
5. the axial clearance detection device of ball screw assembly, according to claim 1, it is characterised in that: the pedestal (1)
Bottom surface (1.1) it is parallel with its lower end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925704.3U CN208313263U (en) | 2018-06-14 | 2018-06-14 | The axial clearance detection device of ball screw assembly, |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820925704.3U CN208313263U (en) | 2018-06-14 | 2018-06-14 | The axial clearance detection device of ball screw assembly, |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208313263U true CN208313263U (en) | 2019-01-01 |
Family
ID=64707887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820925704.3U Active CN208313263U (en) | 2018-06-14 | 2018-06-14 | The axial clearance detection device of ball screw assembly, |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208313263U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11105604B2 (en) * | 2017-10-26 | 2021-08-31 | Nsk Ltd. | Method and apparatus of measuring axial clearance of ball screw device, and methods of manufacturing ball screw device, vehicle, and mechanical device |
| CN114234884A (en) * | 2021-11-22 | 2022-03-25 | 河南航天液压气动技术有限公司 | Trapezoidal screw pair gap detection equipment and detection method |
-
2018
- 2018-06-14 CN CN201820925704.3U patent/CN208313263U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11105604B2 (en) * | 2017-10-26 | 2021-08-31 | Nsk Ltd. | Method and apparatus of measuring axial clearance of ball screw device, and methods of manufacturing ball screw device, vehicle, and mechanical device |
| CN114234884A (en) * | 2021-11-22 | 2022-03-25 | 河南航天液压气动技术有限公司 | Trapezoidal screw pair gap detection equipment and detection method |
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