CN204004260U - A kind ofly regulate and control lead screw shaft to the device of pretightening force - Google Patents
A kind ofly regulate and control lead screw shaft to the device of pretightening force Download PDFInfo
- Publication number
- CN204004260U CN204004260U CN201420386368.1U CN201420386368U CN204004260U CN 204004260 U CN204004260 U CN 204004260U CN 201420386368 U CN201420386368 U CN 201420386368U CN 204004260 U CN204004260 U CN 204004260U
- Authority
- CN
- China
- Prior art keywords
- leading screw
- electromagnet
- pretightening force
- free end
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A kind ofly regulate and control lead screw shaft to the device of pretightening force, relate to a kind of mechanical device, described device comprises axle end baffle plate (1), joint bolt (2), shaft end nut (3), back to back angle contact bearing (4), leading screw (5), nut (6), bearing (7), position detector (8) and electromagnet (9); Axle end baffle plate (1), joint bolt (2), shaft end nut (3), back to back angle contact bearing (4), leading screw left end supports two axial restraints, at leading screw free end, electromagnet (9) is set; Leading screw free end arranges electromagnet (9), at leading screw free end setting position detector (8).During work, electromagnet is given electricity, produces magnetic field, attracts the axle head of leading screw 5, thereby axial pre tightening force is provided, and adjusts in real time pretightening force size, and compensation external environment changes and usage requirement changes the impact on lead screw transmission, improves transmission accuracy.The utility model is applicable in the high-accuracy mechanical transmissions such as numerical control machine tool.
Description
Technical field
The utility model relates to a kind of mechanical device, particularly relates to a kind ofly regulating and controlling lead screw shaft to the device of pretightening force.
Background technique
On numerical control machine tool or accurate mechanical equipment, axial tension pretightening force can improve rigidity, reduces the impact of leading screw thermal distortion and improve leading screw dynamic characteristic, but the common unadjustable control of axial force of pre-tightening apparatus, can not make drive characteristic be optimized at present.
Summary of the invention
The purpose of this utility model is to provide a kind of and regulates and controls lead screw shaft to the device of pretightening force, this device leading screw free end arranges electromagnet, during work, electromagnet is given electricity, produce magnetic field, attract the axle head of leading screw, thereby axial pre tightening force is provided, can improves axial rigidity, reduce the impact of leading screw thermal distortion and improve leading screw dynamic characteristic.
The purpose of this utility model is achieved through the following technical solutions:
Regulate and control lead screw shaft to a device for pretightening force, described device comprises axle end baffle plate, joint bolt, shaft end nut, back to back angle contact bearing, leading screw, nut, bearing, position detector and electromagnet; Axle end baffle plate, joint bolt, shaft end nut, back to back angle contact bearing, leading screw left end supports two axial restraints, at leading screw free end, electromagnet is set; Leading screw free end arranges electromagnet, at leading screw free end setting position detector.
Described a kind ofly regulate and control lead screw shaft to the device of pretightening force, described position detector is comprised of scale and slide rule.
Advantage of the present utility model and effect are:
1. the utility model leading screw free end arranges electromagnet, and during work, electromagnet is given electricity, produces magnetic field, attracts the axle head of leading screw, thereby axial pre tightening force is provided, and can improve axial rigidity, reduces the impact of leading screw thermal distortion and improve leading screw dynamic characteristic.And can change according to external environment condition, as temperature variation etc., the variation of use work fact, as external load changes, adjusts pretightening force size in real time, and compensation external environment changes and usage requirement changes the impact on lead screw transmission, raising transmission accuracy.And simple in structure, be easy to realize, with low cost.
2. this device is at leading screw free end setting position detector, position detector is comprised of scale and slide rule, axle head position is the Comprehensive Control amount of external environment and applying working condition, by detecting axle head position, (testing signal is through comparator, digital to analog converter, pass to servoamplifier) thus electromagnet current controlled, then control pretightening force, compensate and improve leading screw impact on the dynamic characteristic of Leadscrew drive system in external environment and applying working condition variation, can control in real time according to job requirement the solid thermal coupling characteristic of transmission system.Have gap and compensate at any time, the feature that rigidity is large, reduces driving error thereby reach, and reduces vibratory impulse noise contributions.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure schematic diagram;
Fig. 2 is the utility model pretightening force regulating and controlling schematic diagram.
Embodiment
Below in conjunction with accompanying drawing illustrated embodiment, the utility model is described in further detail.
The utility model is by axle end baffle plate 1, joint bolt 2, and shaft end nut 3, back to back angle contact bearing 4 guarantee that left end supports two axial restraints, and right-hand member supports and is free to slide.At free end, electromagnet 9 is set axial pre tightening force is provided, position detector 8 detects axle head position.During work, electromagnet 9 is given electricity, produces magnetic field, attracts leading screw 5, and axial pre tightening force is provided, and can improve rigidity, reduces the impact of leading screw thermal distortion and improve leading screw dynamic characteristic.Thereby reach, reduce driving error, improve transmission accuracy.During work, position detector 8, detects axle head position, and testing signal is processed by analysis, for controlling electromagnet current, then controls pretightening force, improves dynamic characteristic.Can, by changing electromagnet current size, adjust in real time pretightening force size.
Embodiment 1:
The utility model, on numerical control machine tool or accurate mechanical equipment, improves leading screw dynamic characteristic thereby axial tension pretightening force can improve the impact of rigidity, the thermal distortion of minimizing leading screw.
This device is by axle end baffle plate 1, joint bolt 2, and shaft end nut 3, back to back angle contact bearing 4, leading screw 5, nut 6, bearing 7, position detector 8 and electromagnet 9 form.By axle end baffle plate 1, joint bolt 2, shaft end nut 3, back to back angle contact bearing 4 guarantee that leading screw left end supports two axial restraints, and right-hand member supports and is free to slide.At leading screw free end, electromagnet 9 is set axial pre tightening force is provided, position detector 8 detects axle head position.Thereby reach, reduce driving error, improve transmission accuracy.Leading screw free end arranges electromagnet 9, and during work, electromagnet 9 is given electricity, produces magnetic field, attracts the axle head of leading screw 5, thereby axial pre tightening force is provided, and can improve rigidity, reduces the impact of leading screw thermal distortion and improve leading screw dynamic characteristic.And can change according to external environment condition, as temperature variation etc., the variation of use work fact, as external load changes, adjusts pretightening force size in real time, and compensation external environment changes and usage requirement changes the impact on lead screw transmission, raising transmission accuracy.This device is at leading screw free end setting position detector 8, position detector 8 is comprised of scale and slide rule, axle head position is the Comprehensive Control amount of external environment and applying working condition, by detecting axle head position, (testing signal is through comparator, digital to analog converter, pass to servoamplifier) thus electromagnet current controlled, then control pretightening force, compensate and improve leading screw impact on the dynamic characteristic of Leadscrew drive system in external environment and applying working condition variation, can control in real time according to job requirement the solid thermal coupling characteristic of transmission system.
The utility model is applicable in the high-accuracy mechanical transmissions such as numerical control machine tool.
Claims (2)
1. one kind can regulate and control lead screw shaft to the device of pretightening force, it is characterized in that, described device comprises axle end baffle plate (1), joint bolt (2), shaft end nut (3), back to back angle contact bearing (4), leading screw (5), nut (6), bearing (7), position detector (8) and electromagnet (9); Axle end baffle plate (1), joint bolt (2), shaft end nut (3), back to back angle contact bearing (4), leading screw left end supports two axial restraints, at leading screw free end, electromagnet (9) is set; Leading screw free end arranges electromagnet (9), at leading screw free end setting position detector (8).
2. according to claim 1ly a kind ofly regulate and control lead screw shaft to the device of pretightening force, it is characterized in that, described position detector (8) is comprised of scale and slide rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386368.1U CN204004260U (en) | 2014-07-14 | 2014-07-14 | A kind ofly regulate and control lead screw shaft to the device of pretightening force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420386368.1U CN204004260U (en) | 2014-07-14 | 2014-07-14 | A kind ofly regulate and control lead screw shaft to the device of pretightening force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204004260U true CN204004260U (en) | 2014-12-10 |
Family
ID=52044263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420386368.1U Expired - Fee Related CN204004260U (en) | 2014-07-14 | 2014-07-14 | A kind ofly regulate and control lead screw shaft to the device of pretightening force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204004260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141758A (en) * | 2014-07-14 | 2014-11-12 | 沈阳化工大学 | Device capable of regulating and controlling axial pre-tightening force of screw rod |
| CN104551837A (en) * | 2015-01-04 | 2015-04-29 | 沈阳化工大学 | Ball screw axial pre-compression device with controllable pre-stretching force |
-
2014
- 2014-07-14 CN CN201420386368.1U patent/CN204004260U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141758A (en) * | 2014-07-14 | 2014-11-12 | 沈阳化工大学 | Device capable of regulating and controlling axial pre-tightening force of screw rod |
| CN104551837A (en) * | 2015-01-04 | 2015-04-29 | 沈阳化工大学 | Ball screw axial pre-compression device with controllable pre-stretching force |
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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: 20141210 Termination date: 20170714 |