CN206029231U - Lead screw pre -stretching mounting structure - Google Patents
Lead screw pre -stretching mounting structure Download PDFInfo
- Publication number
- CN206029231U CN206029231U CN201620673865.9U CN201620673865U CN206029231U CN 206029231 U CN206029231 U CN 206029231U CN 201620673865 U CN201620673865 U CN 201620673865U CN 206029231 U CN206029231 U CN 206029231U
- Authority
- CN
- China
- Prior art keywords
- bearing
- screw mandrel
- motor cabinet
- housing
- cover
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a lead screw pre -stretching mounting structure, the one end of its lead screw is fixed, other end freedom, all install the bearing at stiff end and free end, the bearing of stiff end is arranged in the bearing frame of fixing with the machine tool main body structure, free end at the lead screw, the bearing housing is installed outward to the bearing, set up motor cabinet flange outside the bearing housing, motor cabinet flange connects firmly with the motor cabinet, set up the through -hole on the motor cabinet flange, the bearing housing sets up vertical spout with the position that the through -hole corresponds, set up the screw thread section outside the bearing housing, screw thread section part is located motor cabinet flange's downside, the part is stretched out outside motor cabinet flange, there is bearing housing adjusting nut at this screw thread section top spin. Since its bearing housing adjusting nut can be in the screw section of bearing housing the certain distance of precession, the event pre -stretching volume of steerable lead screw, therefore to the control convenience very of lead screw pre -stretching volume, the operation very simply.
Description
Technical field
This utility model is related to the mounting structure of lathe feed screw, and knot is installed in the pre-stretching of particularly a kind of lathe feed screw
Structure.
Background technology
In the feeding transmission system of lathe, Jing, as actuated element the rotation of servomotor is transported frequently with screw mandrel
It is dynamic to be converted into Motor execution part（Knife rest or workbench etc.）Rectilinear movement.But screw mandrel by thermal stretching is in the course of the work cannot
Avoid, because of the mobile accuracy that can be affected the executive item for moving thereon by thermal stretching of screw mandrel, so as to the processing of lathe essence can be given
Degree brings harmful effect.In the case of required precision height, in order to reduce the shadow that screw mandrel thermal expansion deformation is brought to machining accuracy
Ring, need to compensate the thermal expansion of screw mandrel, the pre-stretching of screw mandrel is exactly conventional compensation method.Which is by elongating to leading screw
One pre-stretching amount, makes threads of lead screw part to nominal length.During work, thermal expansion amount offsets pre-stretching amount, and drawing leading screw should
Power declines, but length is constant, so as to ensure that pitch precision is not influenced by thermal expansion, it is ensured that the positioning precision of screw mandrel, so as to protect
The machining accuracy of card lathe.
The pre-stretching structure that existing lathe feed screw is installed, the bearing both sides at the two ends of its screw mandrel are respectively provided with dottle pin, lead to
Cross tightening nut and compress dottle pin, realize the pre-stretching of screw mandrel, its pre-stretching amount is determined by the thickness of dottle pin, by adjusting dottle pin
Thickness adjusts the pre-stretching amount of screw mandrel, after screw mandrel is installed, the more difficult adjustment of pre-stretching amount.And due to dottle pin, screw mandrel, screw spiral shell
The work difference problem of the parts such as mother, bearing, bearing holder (housing, cover) processing, and in assembly precision problem, the actual pre- of final screw mandrel can be caused
There is deviation with the pre-stretching amount of design in amount of tension, it is difficult to ensure pretensioning effect.And once pre-stretching is unable to reach requirement, its
Need to be dismounted to be adjusted again, its need adjust pretightning force when operation it is very loaded down with trivial details, and repeat assembly and disassembly bearing every
Pad can also affect the precision of bearing.
Utility model content
This utility model type is directed to one kind and can very easily control pre-stretching amount meet resetting needs, guarantor
The screw mandrel of card ball screw accuracy and stretching mounting structure；And one kind carries out screw mandrel prestretching using above-mentioned screw mandrel pre-stretching mounting structure
The method stretched.
Screw mandrel described in the utility model is pre-stretched mounting structure, and one end of its screw mandrel is fixed, and other end freedom is being fixed
End and free end are mounted on bearing, and the bearing of fixing end is placed in the bearing block fixed with machine tool main body structure, in the bearing
The inside and outside both sides of seat, are respectively arranged with gland and inner ring spacer, and gland is connected firmly with bearing block, offseted with bearing outer ring from inner side
Tightly, inner ring spacer is then offseted from outside with bearing inner race, also sets thread segment, locking nut on the screw mandrel on the outside of inner ring spacer
It is threaded onto thereon, inner ring spacer, bearing inner race is compressed；In the free end of screw mandrel, bearing holder (housing, cover) is installed outside bearing, bearing holder (housing, cover)
Inside and outside both sides are respectively mounted inner ring spacer, and inner ring of the two inner ring spacers from both sides with bearing is pushed against, the outer ring of bearing then with bearing holder (housing, cover)
Offset in inner side；Motor cabinet adpting flange is set, and motor cabinet adpting flange is connected firmly with motor cabinet, motor cabinet connection outside bearing holder (housing, cover)
Through hole is set on flange, and bearing holder (housing, cover) position corresponding with through hole arranges longitudinal chute, and keeper is arranged in through hole, and its bottom is embedding
Enter in longitudinal chute of bearing holder (housing, cover), motor cabinet adpting flange is engaged by keeper and longitudinal chute with bearing holder (housing, cover), is formed
Can the relative assembling structure slided；Section is threaded on the outside of bearing holder (housing, cover), and thread segment part is located under motor cabinet adpting flange
Side, partly stretch out from the outside of motor cabinet adpting flange, be rotary with bearing holder (housing, cover) adjusting nut on the thread segment.
Screw mandrel described in the utility model is pre-stretched mounting structure, the fixing end of its screw mandrel, respectively by gland and inner ring every
Set pushes against bearing inner race and bearing outer ring from both sides, and its gland is fixed with bearing block and machine body structure, by locking nut
Inner ring spacer, bearing inner race and bearing outer ring are pressed on gland side, fixation and the positioning of fixing end is realized.Screw mandrel
Free end, the bearing inner race spacer of inside and outside both sides push against bearing inner race from both sides, screw mandrel is fixed with bearing inner race；And bearing
It is enclosed within inner side to offset with bearing outer ring, bearing holder (housing, cover) is then threaded section in outside, stretches out from the bottom of motor cabinet adpting flange（Portion
Divide positioned at downside, partly stretch out）, bearing holder (housing, cover) adjusting nut is installed on thread segment, motor cabinet adpting flange is passed through with bearing holder (housing, cover)
Keeper and longitudinal chute are engaged, and being formed can the relative assembling structure slided；By screwing bearing holder (housing, cover) adjusting nut, axle can be made
Bearing sleeve is vertical with respect to motor connecting base flange to be displaced outwardly, and makes to follow bearing holder (housing, cover) together outer with the bearing outer ring that bearing holder (housing, cover) offsets
Draw, so as to realize the pre-stretching of screw mandrel.
The screw mandrel is pre-stretched mounting structure, and its screw mandrel free end is fixed with bearing inner race, and bearing outer ring is supported with bearing holder (housing, cover)
Tightly, bearing holder (housing, cover) can be moved in longitudinal chute relative to motor cabinet adpting flange, thus the end position of screw mandrel, bearing, bearing holder (housing, cover)
Relatively freely, can freely stretch in the range of the license of longitudinal chute.And as its bearing holder (housing, cover) adjusting nut can be in bearing holder (housing, cover)
Precession a certain distance on thread segment, therefore which can pull the relative motor fixed with motor cabinet of bearing holder (housing, cover) to make to move one outside adpting flange
Set a distance, therefore by controlling precession distance of the bearing holder (housing, cover) adjusting nut on thread segment, you can the pre-stretching amount of control screw mandrel, because
And the control to screw mandrel pre-stretching amount is very convenient, operation is very simple.
Description of the drawings
Fig. 1 is the schematic diagram that screw mandrel described in the utility model is pre-stretched mounting structure.
Fig. 2 is partial enlarged drawings of the Fig. 1 at screw mandrel fixing end.
Fig. 3 is partial enlarged drawings of the Fig. 1 in screw mandrel free end.
Specific embodiment
A kind of screw mandrel is pre-stretched mounting structure, and such as Fig. 1, one end of screw mandrel 1 are fixed, other end freedom, in fixing end and certainly
Bearing 2 is mounted on by end.Fixing end, such as Fig. 2, are placed in the bearing block 3 fixed with machine tool main body structure by bearing 2,
The inside and outside both sides of bearing block 3, are respectively arranged with gland 4 and inner ring spacer 5, and gland 4 is connected firmly with bearing block 3, from inner side and bearing
Outer ring 21 offsets, and inner ring spacer 5 is then offseted from outside with bearing inner race 22, also sets on the screw mandrel on the outside of inner ring spacer 5
Thread segment 6, locking nut 7 are threaded onto thereon, and inner ring spacer 5, bearing inner race 22 are compressed.In the free end of screw mandrel 1, such as Fig. 3, its
Bearing 2 is outer to install bearing holder (housing, cover) 8, and the inside and outside both sides of bearing holder (housing, cover) 8 are respectively mounted inner ring spacer 5, and two inner ring spacers 5 are from both sides and bearing
Inner ring 22 push against, the outer ring 21 of bearing is then offseted in inner side with bearing holder (housing, cover) 8；Motor cabinet adpting flange 9 is set outside bearing holder (housing, cover),
Motor cabinet adpting flange 9 is connected firmly with motor cabinet 10, is such as schemed, and which passes through screw 13 and is fixedly connected position one.In motor cabinet connection method
Through hole 91 is set on blue 9, and bearing holder (housing, cover) 8 is arranging longitudinal chute 81 with 91 corresponding position of through hole, in the insertion through hole of keeper 11,
In longitudinal chute of the embedded bearing holder (housing, cover) in bottom, motor cabinet adpting flange is engaged by keeper and longitudinal chute with bearing holder (housing, cover),
Being formed can the relative assembling structure slided；The through hole of the motor cabinet adpting flange can be tapered unthreaded hole, and keeper is positioning
Pin, alignment pin are inserted in through hole, and bottom is inserted in longitudinal chute；Also can motor cabinet adpting flange through hole be screwed hole,
Keeper is holding screw, and holding screw is threaded onto in screwed hole, and bottom is inserted in longitudinal chute.Set in the outside of bearing holder (housing, cover) 8
Thread segment 82 is equipped with, thread segment part is located at the downside of motor cabinet adpting flange 9, partly stretches from the outside of motor cabinet adpting flange
Go out, be rotary with bearing holder (housing, cover) adjusting nut 12 on the thread segment.
For making the inner ring spacer on the outside of free end mutually fix with screw mandrel, screw mandrel is threaded section on the outside of the inner ring spacer,
Fixing nut 14 is threaded onto thereon, by inner ring spacer spacing fixation.
The bearing that screw mandrel fixing end is installed can have two, with back-to-back（DB）The mode of combination is arranged side by side.Screw mandrel is fixed
The bearing that end is installed can also have three, be arranged side by side in the way of DBD is combined.
The bearing that screw mandrel free end is installed has two, with side by side（DT）The mode of combination is arranged side by side.Or screw mandrel freedom
The bearing that end is installed has three, is arranged side by side in the way of DTD is combined.
Claims (5)
1. a kind of screw mandrel is pre-stretched mounting structure, it is characterised in that：One end of screw mandrel is fixed, other end freedom, in fixing end and
Free end is mounted on bearing, and the bearing of fixing end is placed in the bearing block fixed with machine tool main body structure, in the bearing block
Inside and outside both sides, are respectively arranged with gland and inner ring spacer, and gland is connected firmly with bearing block, offseted with bearing outer ring from inner side, interior
Circle spacer is then offseted from outside with bearing inner race, also sets thread segment on the screw mandrel on the outside of inner ring spacer, and locking nut is threaded onto
Thereon, inner ring spacer, bearing inner race are compressed；In the free end of screw mandrel, bearing holder (housing, cover) is installed outside bearing, bearing holder (housing, cover) it is inside and outside
Both sides are respectively mounted inner ring spacer, and inner ring of the two inner ring spacers from both sides with bearing is pushed against, the outer ring of bearing then with bearing holder (housing, cover) including
Side offsets；Motor cabinet adpting flange is set outside bearing holder (housing, cover), and motor cabinet adpting flange is connected firmly with motor cabinet, motor cabinet adpting flange
Upper setting through hole, bearing holder (housing, cover) position corresponding with through hole arrange longitudinal chute, and keeper is arranged in through hole, and its bottom is embedded in
In longitudinal chute of bearing holder (housing, cover), motor cabinet adpting flange is engaged by keeper and longitudinal chute with bearing holder (housing, cover), and formation can phase
To the assembling structure slided；Section is threaded on the outside of bearing holder (housing, cover), and thread segment part is located at the downside of motor cabinet adpting flange, portion
Divide and stretch out from the outside of motor cabinet adpting flange, be rotary with bearing holder (housing, cover) adjusting nut on the thread segment.
2. a kind of screw mandrel according to claim 1 is pre-stretched mounting structure, it is characterised in that：The axle that screw mandrel fixing end is installed
Two are held, two bearings are arranged side by side in the way of back-to-back combination.
3. a kind of screw mandrel according to claim 1 is pre-stretched mounting structure, it is characterised in that：The axle that screw mandrel fixing end is installed
Three are held, three bearings are arranged side by side in the way of the combination of back-to-back opposite.
4. a kind of screw mandrel according to claim 1 is pre-stretched mounting structure, it is characterised in that：The axle that screw mandrel free end is installed
Hold two modes back to face combination to be arranged side by side.
5. a kind of screw mandrel according to claim 1 is pre-stretched mounting structure, it is characterised in that：The axle that screw mandrel free end is installed
Hold three modes back to face combination to be arranged side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620673865.9U CN206029231U (en) | 2016-06-30 | 2016-06-30 | Lead screw pre -stretching mounting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620673865.9U CN206029231U (en) | 2016-06-30 | 2016-06-30 | Lead screw pre -stretching mounting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206029231U true CN206029231U (en) | 2017-03-22 |
Family
ID=58309782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620673865.9U Withdrawn - After Issue CN206029231U (en) | 2016-06-30 | 2016-06-30 | Lead screw pre -stretching mounting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206029231U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078176A (en) * | 2016-06-30 | 2016-11-09 | 广州市高品机床有限公司 | A kind of screw mandrel prestretched mounting structure |
| CN107420504A (en) * | 2017-08-29 | 2017-12-01 | 万安衡源智能装备有限公司 | Leading screw pre-tension method and the device for leading screw pre-tension method |
| CN110250532A (en) * | 2019-07-26 | 2019-09-20 | 张建勇 | It is a kind of to rush shell machine Chong Ke mechanism and its rush shell side method |
| CN110814833A (en) * | 2019-11-18 | 2020-02-21 | 广州佳盟子机床有限公司 | Screw rod pre-stretching mechanism for numerical control machine tool |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
-
2016
- 2016-06-30 CN CN201620673865.9U patent/CN206029231U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106078176A (en) * | 2016-06-30 | 2016-11-09 | 广州市高品机床有限公司 | A kind of screw mandrel prestretched mounting structure |
| CN106078176B (en) * | 2016-06-30 | 2018-03-30 | 广州市高品机床有限公司 | A kind of screw mandrel is pre-stretched mounting structure |
| CN107420504A (en) * | 2017-08-29 | 2017-12-01 | 万安衡源智能装备有限公司 | Leading screw pre-tension method and the device for leading screw pre-tension method |
| CN110250532A (en) * | 2019-07-26 | 2019-09-20 | 张建勇 | It is a kind of to rush shell machine Chong Ke mechanism and its rush shell side method |
| CN110814833A (en) * | 2019-11-18 | 2020-02-21 | 广州佳盟子机床有限公司 | Screw rod pre-stretching mechanism for numerical control machine tool |
| CN113560933A (en) * | 2021-07-22 | 2021-10-29 | 上海诺倬力机电科技有限公司 | Screw rod stretching support structure and mounting method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170322 Effective date of abandoning: 20180330 |
|
| AV01 | Patent right actively abandoned |