CN208231379U - Vertical machining centre lead screw is pre-stretched tail end floating support structure - Google Patents
Vertical machining centre lead screw is pre-stretched tail end floating support structure Download PDFInfo
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- CN208231379U CN208231379U CN201820824649.9U CN201820824649U CN208231379U CN 208231379 U CN208231379 U CN 208231379U CN 201820824649 U CN201820824649 U CN 201820824649U CN 208231379 U CN208231379 U CN 208231379U
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Abstract
The utility model relates to a kind of vertical machining centre lead screws to be pre-stretched tail end floating support structure, belong to numerical control machine tool technique field, including lead screw, angular contact ball bearing is sequentially installed on lead screw from top to bottom, spacer and locking nut, spacer upper surface is in contact with the inner ring of angular contact ball bearing, it is characterized by: being equipped with bearing holder (housing, cover) outside angular contact ball bearing, bearing block is installed outside bearing holder (housing, cover), slide mass is equipped between bearing block and bearing holder (housing, cover), there are gaps between bearing block and bearing holder (housing, cover), bearing holder (housing, cover) lower end is equipped with gland by screw, gland upper surface is in contact with the outer ring of angular contact ball bearing.The utility model structure is simple, easy to implement, be applicable in area it is wide, it is cheap, can effectively solve vertical machining centre lead screw because temperature rise or frictional heat generation caused by thermal stretching problem on deformation, improve the machining accuracy of lathe.
Description
Technical field
The utility model relates to a kind of vertical machining centre lead screws to be pre-stretched tail end floating support structure, belong to numerically-controlled machine tool
Technical field.
Background technique
The general support construction of vertical machining centre lead screw transmission uses fixation-fixation, fixation-support, fixation-certainly at present
By structure.Fixation-fixed structure is chiefly used in high-accuracy machining tool, machining accuracy and assembly precision is required high；Fixed-
Free structure, since tail end is completely free, temperature change or lead screw friction rise heat, cause the thermal stretching phenomenon of lead screw extremely tight
Weight, is generally fitted with linear grid ruler and is used together, price is higher；Fixation-support construction is usually widely used, usual situation
Under complete lead screw assembly after, need to carry out lead screw pre-stretching work, offset lead screw thermal stretching generate loss of significance.For angle
Contact ball bearing can bear axis radial force, only do revolution and use, and lead screw prestretching generally moves axially, therefore under normal conditions
Angular contact ball bearing combination, be unable to complete axial movement, that is, be unable to complete lead screw prestretching.Using thrust bearing or centration axis
Holding may be implemented lead screw and axially moves after assembling bearing, but the class bearing is subjected only to one direction radial force, unbearable axis again
Xiang Li is unable to satisfy normal working condition requirement, therefore in this case, designs description scheme in this patent.
Utility model content
The purpose of this utility model is to solve that deficiency exists in the prior art, and vertical processing can effectively be solved by providing one kind
Center lead screw because temperature rise or frictional heat generation caused by thermal stretching problem on deformation vertical machining centre lead screw be pre-stretched tail end
Floating support structure,
The utility model is achieved through the following technical solutions:
That is a kind of vertical machining centre lead screw is pre-stretched tail end floating support structure, including lead screw, on lead screw from top to bottom
It is sequentially installed with angular contact ball bearing, spacer and locking nut, spacer upper surface is in contact with the inner ring of angular contact ball bearing,
It is characterized by: being equipped with bearing holder (housing, cover) outside angular contact ball bearing, bearing block is installed outside bearing holder (housing, cover), between bearing block and bearing holder (housing, cover)
Equipped with slide mass, there are gap between bearing block and bearing holder (housing, cover), bearing holder (housing, cover) lower end is equipped with gland, gland upper surface by screw
It is in contact with the outer ring of angular contact ball bearing.
The utility model structure is simple, easy to implement, and applicable area is wide, cheap, can effectively solve in vertical processing
Heart lead screw because temperature rise or frictional heat generation caused by thermal stretching problem on deformation, improve the machining accuracy of lathe.
Further preferably, slide mass is made of wear-resistant material.
Compared with prior art, beneficial effect possessed by the utility model is:
The utility model structure is simple, easy to implement, and applicable area is wide, cheap, can effectively solve in vertical processing
Heart lead screw because temperature rise or frictional heat generation caused by thermal stretching problem on deformation, improve the machining accuracy of lathe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: 1, bearing block；2, bearing holder (housing, cover)；3, angular contact ball bearing；4, locking nut；5, lead screw；6, spacer；7, it presses
Lid；8, slide mass；9, screw.
Specific embodiment
Below against attached drawing, specific embodiment of the present utility model is described in further detail.
A kind of vertical machining centre lead screw as shown in Figure 1 is pre-stretched tail end floating support structure, including lead screw 5, lead screw 5
On be sequentially installed with angular contact ball bearing 3, spacer 6 and locking nut 4 from top to bottom, 6 upper surface of spacer and angular contact ball axis
Hold 3 inner ring to be in contact, bearing holder (housing, cover) 2 be installed outside angular contact ball bearing 3, bearing block 1 is installed outside bearing holder (housing, cover) 2, bearing block 1 with
Slide mass 8 is equipped between bearing holder (housing, cover) 2, slide mass 8 is made of wear-resistant material, and there are gap, axis between bearing block 1 and bearing holder (housing, cover) 2
2 lower end of bearing sleeve is equipped with gland 7 by screw 9, and 7 upper surface of gland is in contact with the outer ring of angular contact ball bearing 3.
The course of work:
Angular contact ball bearing 3 can bear axial force and radial force, during 5 prestretching of lead screw, angular contact ball bearing 3, pressure
Lid 7 and bearing holder (housing, cover) 2 are structure as a whole, and can move under the action of pretension, and are set between bearing holder (housing, cover) 2 and bearing block 1
Slide mass 8 can effectively reduce frictional resistance, make entirely act it is more smooth, lead screw 5 can effectively reduce after prestretching because of temperature
Rise or the friction of lead screw 5 rises caused loss of significance after thermally-induced 5 thermal stretching of lead screw.
The orientation or positional relationship of the instructions such as term "inner", "outside", "upper", "lower" is in the description of the present invention,
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the utility model rather than requires the utility model must
It must be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
Claims (2)
1. a kind of vertical machining centre lead screw is pre-stretched tail end floating support structure, including lead screw (5), lead screw are arrived on (5) from above
Under be sequentially installed with angular contact ball bearing (3), spacer (6) and locking nut (4), spacer (6) upper surface and angular contact ball axis
The inner ring for holding (3) is in contact, it is characterised in that: is equipped with bearing holder (housing, cover) (2) outside angular contact ball bearing (3), bearing holder (housing, cover) (2) is installed outside
Have bearing block (1), is equipped with slide mass (8) between bearing block (1) and bearing holder (housing, cover) (2), is deposited between bearing block (1) and bearing holder (housing, cover) (2)
In gap, bearing holder (housing, cover) (2) lower end is equipped with gland (7) by screw (9), gland (7) upper surface and angular contact ball bearing (3)
Outer ring is in contact.
2. vertical machining centre lead screw according to claim 1 is pre-stretched tail end floating support structure, it is characterised in that: sliding
Kinetoplast (8) is made of wear-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820824649.9U CN208231379U (en) | 2018-05-30 | 2018-05-30 | Vertical machining centre lead screw is pre-stretched tail end floating support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820824649.9U CN208231379U (en) | 2018-05-30 | 2018-05-30 | Vertical machining centre lead screw is pre-stretched tail end floating support structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208231379U true CN208231379U (en) | 2018-12-14 |
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ID=64576020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820824649.9U Active CN208231379U (en) | 2018-05-30 | 2018-05-30 | Vertical machining centre lead screw is pre-stretched tail end floating support structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208231379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116021322A (en) * | 2023-03-29 | 2023-04-28 | 湖南中大创远数控装备有限公司 | Ball screw prestretching structure convenient for secondary assembly, machine tool and method |
-
2018
- 2018-05-30 CN CN201820824649.9U patent/CN208231379U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116021322A (en) * | 2023-03-29 | 2023-04-28 | 湖南中大创远数控装备有限公司 | Ball screw prestretching structure convenient for secondary assembly, machine tool and method |
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