CN202655856U - Constant temperature difference pre-stretching device for screw - Google Patents
Constant temperature difference pre-stretching device for screw Download PDFInfo
- Publication number
- CN202655856U CN202655856U CN 201220178600 CN201220178600U CN202655856U CN 202655856 U CN202655856 U CN 202655856U CN 201220178600 CN201220178600 CN 201220178600 CN 201220178600 U CN201220178600 U CN 201220178600U CN 202655856 U CN202655856 U CN 202655856U
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- temperature
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- leading screw
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Abstract
The utility model discloses a constant temperature difference pre-stretching device for a screw. A bearing is fastened outside a ball screw through a fixed locking nut. A screw temperature sensor is arranged on the lower part of the ball screw. A dial indicator and a screw temperature controller are arranged on the upper part of the ball screw. A heater power socket is arranged on the end part of the ball screw. A pre-stretching nut is arranged on the right end part of the ball screw. A pedestal is arranged on the lower part of the ball screw. A pedestal temperature sensor is arranged on the upper part of the pedestal. The screw temperature sensor, the screw temperature controller and the pedestal temperature sensor are connected to a constant temperature difference compensator. A heating controller and a computer are connected to the constant temperature difference compensator, and are connected together. The heater power socket is connected with the heating controller. A pre-stretching amount can be accurately controlled, and manpower is not required to regulate and control an assembly process.
Description
Technical field
The utility model relates to plant equipment, is specially leading screw fixed difference difference pre-stretching device.
Background technology
Leading screw, the title screw mandrel is also arranged, the fixed difference difference pre-stretching device mainly applies to pre-(stress) stretching installation exercise (also claiming the leading screw pretension to stretch) of leading screw, so that the amount of deflection of decrease leading screw, strengthen its rigidity, reduce influence of thermal deformation, reach the purpose that the prolongation leading screw increases the service life, improves Machine Tool Feeding System sensitivity, transmission speed and positioning accuracy.Simultaneously, this device and technology also can be widely used in other axial workpiece prestressing force stretching installation exercise.
At present, in lathe and machinery industry, particularly the ball-screw of precise numerical control machine is installed, for the adverse effect that reduces the guide screw movement temperature rise extensively adopts leading screw pretension stretching assembly technology, namely when leading screw is installed, by applying axial force, make the distortion of leading screw generation axial elongation, in use raise because of the friction of motion temperature with convenient leading screw, when elongation strain occurring, can utilize this prestressing force distortion to reach counteracting (or reduction) and the purpose of elongation strain amount, thereby make the transmission transmission accuracy of lathe can corresponding decline not occur because of the motion temperature rise in the use procedure.Adopt leading screw pretension stretching mounting process, can reduce the thermal deformation of leading screw, improve rigidity and the response speed of transmission system; Prolong the service life of leading screw; Improve positioning accuracy and the precision stability of feed system.Existing leading screw pretension drawing process mainly contains two class modes: the first, and pad is adjusted method; The second, moment method.These two kinds of methods all are to adopt some general hand tools, take the artificial by rule of thumb mode of control to operate.The deficiency of current mode is: pad is adjusted method and only amount of tension is controlled, amount of tension control to the 0.01mm precision grade, axially preload value error is large, might cause the leading screw bearing to bear the axial preload of excessive (or too small), simultaneously, leading screw need to carry out machining when installing, and is unfavorable for organization of production.Moment method is conducive to the axial pre tightening force of leading screw is controlled, but the pretightning force of leading screw bearing is difficult to control, when adopting simultaneously moment method that leading screw is carried out pretension, the one-way shaft that may manufacture lead screw shaft was transshipped to moment, thus the service life of reducing bearing.Adopt leading screw fixed difference difference pre-stretching device to carry out the assembling work of leading screw, can accurately control the prestretched amount, need not manually assembling process to be adjusted control, significantly eliminate artificial rigging error, simultaneously also need not to carry out machining, can once finishing of fast accurate set.
The utility model content
The technical problem that the utility model solves is to provide leading screw fixed difference difference pre-stretching device, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
Leading screw fixed difference difference pre-stretching device; comprise the stiff end locking nut; bearing; ball-screw; the leading screw temperature sensor; amesdial; the screw mandrel temperature controller; the base-plate temp sensor; the warmer supply socket; the prestretching nut; pedestal; fixed difference difference is mended device; temperature adding controller; computer; the temperature control measuring point; heat-barrier coating; binder; heat-conducting layer and zone of heating; described stiff end locking nut is fastened on bearing in the outside of ball-screw; described ball-screw bottom is equipped with the leading screw temperature sensor; described ball-screw top is equipped with amesdial and screw mandrel temperature controller; the end of described ball-screw is equipped with the warmer supply socket; described prestretching nut is installed in the right-hand end of ball-screw; described pedestal is installed in the bottom of ball-screw; described pedestal top is equipped with the base-plate temp sensor; described leading screw temperature sensor; the screw mandrel temperature controller; the base-plate temp sensor all is connected to fixed difference difference and mends on the device; described fixed difference difference is mended on the device and is connected with temperature adding controller and computer; described temperature adding controller and computer link together, and described warmer supply socket and temperature adding controller link together.
In the utility model, be enclosed with binder on the described ball-screw, ball-screw is enclosed with heat-conducting layer, zone of heating and heat-barrier coating from inside to outside successively, and described temperature control measuring point is positioned on the heat-barrier coating.
Beneficial effect
The utility model can accurately be controlled the prestretched amount, need not manually assembling process to be adjusted control, significantly eliminates artificial rigging error, also need not to carry out machining simultaneously, can once finishing of fast accurate set.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is partial structurtes schematic diagram of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1; the structural representation of leading screw fixed difference difference pre-stretching device; leading screw fixed difference difference pre-stretching device; comprise stiff end locking nut 1; bearing 2; ball-screw 3; leading screw temperature sensor 4; amesdial 5; screw mandrel temperature controller 6; base-plate temp sensor 7; warmer supply socket 8; prestretching nut 9; pedestal 10; fixed difference difference is mended device 11; temperature adding controller 12; computer 13; temperature control measuring point 14; heat-barrier coating 15; binder 16; heat-conducting layer 17 and zone of heating 18; described stiff end locking nut 1 is fastened on bearing 2 in the outside of ball-screw 3; described ball-screw 3 bottoms are equipped with leading screw temperature sensor 4; described ball-screw 3 tops are equipped with amesdial 5 and screw mandrel temperature controller 6; the end of described ball-screw 3 is equipped with warmer supply socket 8; described prestretching nut 9 is installed in the right-hand end of ball-screw 3; described pedestal 10 is installed in the bottom of ball-screw 3; described pedestal 10 tops are equipped with base-plate temp sensor 7; described leading screw temperature sensor 4; screw mandrel temperature controller 6; base-plate temp sensor 7 all is connected to fixed difference difference and mends on the device 11; described fixed difference difference is mended on the device 11 and is connected with temperature adding controller 12 and computer 13; described temperature adding controller 12 and computer 13 link together, and described warmer supply socket 8 and temperature adding controller 12 link together.
Referring to Fig. 2; the partial structurtes schematic diagram of leading screw fixed difference difference pre-stretching device; be enclosed with binder 16 on the described ball-screw 3, ball-screw 3 is enclosed with heat-conducting layer 17, zone of heating 18 and heat-barrier coating 15 from inside to outside successively, and described temperature control measuring point 14 is positioned on the heat-barrier coating 15.
Leading screw fixed difference difference pre-stretching device mainly is comprised of leading screw fixed difference difference prestretched heat tracing heat-proof device and leading screw fixed difference difference prestretched fixed difference difference temperature regulating device, it is a kind of device of finishing leading screw prestretched installation exercise, it is the base attribute of utilizing the metal material expanded by heating, namely in-20 ℃ to 75 ℃ scopes, have specific linear corresponding relation between leading screw length dimension and its temperature, simultaneously the distance between the two leading screw bearing mounting bases also has intrinsic linear corresponding relation with himself temperature.By using suitable heating (also comprising the mode of taking cooling down) insulation temperature regulating device, make and occur specific required temperature difference between leading screw and its mounting base, during general leading screw prestretched, the leading screw temperature is higher, and the temperature of leading screw mounting base is lower.When if the special circumstances leading screw requires to carry out the precommpression installation, can take the mode of cooling down.Because the existence of temperature difference, leading screw will be heated and be elongated to the required size of mounting design, and need not to apply mechanical external force, thereby can reach the purpose of prestretched, adopt simultaneously conventional leading screw erection code to carry out corresponding installation.After the leading screw installation, remove heat tracing heat insulation and controlling temperature device, slow rotational lead screw is until leading screw and leading screw mounting base reach equalized temperature.
Using method is as follows: the first step: leading screw install required material on deck after, the heat tracing heat-proof device is installed on the leading screw, then the observing and controlling sensor that connects the fixed difference difference temperature regulating device, gather assembly environment temperature, humidity and atmospheric pressure data, comprehensive leading screw specification and material category, leading screw mounting base material category, assembly environment temperature humidity atmospheric pressure data and leading screw prestretched design objective, demarcate the running parameter of temperature regulating device, so that it is poor to realize that required specified temp is installed in the leading screw prestretched.
Second step: heat tracing heat-proof device and fixed difference difference temperature regulating device are installed on the leading screw, carrying out corresponding observing and controlling wire connects, after finishing the running parameter setting of fixed difference difference temperature regulating device, starting drive heats leading screw, until device reaches the duty of setting and keeps stable (can take status indicator lamp).
The 3rd step: according to the preload Technique requirement of leading screw bearing, utilize accurate torque wrench that block bearing is carried out pretension and locking.
The 4th step: be fixed in advance the lead screw transmission unit on the lathe base, then branch detects the depth of parallelism of leading screw Up Highway UHW, side bus and guide rail, suitably adjust until after the depth of parallelism between leading screw Up Highway UHW, side bus and the guide rail reaches designing requirement, fixedly lead screw shaft bearing and locating taper pin is installed.
The 5th step: remove heat tracing heat-proof device and fixed difference difference temperature regulating device, slow rotational lead screw is until leading screw and leading screw mounting base reach equalized temperature.And then the depth of parallelism of detection leading screw Up Highway UHW, side bus and guide rail, confirm to install whether meet designing requirement.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model; the technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. leading screw fixed difference difference pre-stretching device; comprise the stiff end locking nut; bearing; ball-screw; the leading screw temperature sensor; amesdial; the screw mandrel temperature controller; the base-plate temp sensor; the warmer supply socket; the prestretching nut; pedestal; fixed difference difference is mended device; temperature adding controller; computer; the temperature control measuring point; heat-barrier coating; binder; heat-conducting layer and zone of heating; it is characterized in that; described stiff end locking nut is fastened on bearing in the outside of ball-screw; described ball-screw bottom is equipped with the leading screw temperature sensor; described ball-screw top is equipped with amesdial and screw mandrel temperature controller; the end of described ball-screw is equipped with the warmer supply socket; described prestretching nut is installed in the right-hand end of ball-screw; described pedestal is installed in the bottom of ball-screw; described pedestal top is equipped with the base-plate temp sensor; described leading screw temperature sensor; the screw mandrel temperature controller; the base-plate temp sensor all is connected to fixed difference difference and mends on the device; described fixed difference difference is mended on the device and is connected with temperature adding controller and computer; described temperature adding controller and computer link together, and described warmer supply socket and temperature adding controller link together.
2. leading screw fixed difference difference pre-stretching device according to claim 1; it is characterized in that; be enclosed with binder on the described ball-screw, ball-screw is enclosed with heat-conducting layer, zone of heating and heat-barrier coating from inside to outside successively, and described temperature control measuring point is positioned on the heat-barrier coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178600 CN202655856U (en) | 2012-04-25 | 2012-04-25 | Constant temperature difference pre-stretching device for screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220178600 CN202655856U (en) | 2012-04-25 | 2012-04-25 | Constant temperature difference pre-stretching device for screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202655856U true CN202655856U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220178600 Expired - Fee Related CN202655856U (en) | 2012-04-25 | 2012-04-25 | Constant temperature difference pre-stretching device for screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202655856U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581583A (en) * | 2018-07-28 | 2018-09-28 | 重庆宏钢数控机床有限公司 | Ball-screw pre-stretching amount controllable adjustment device |
-
2012
- 2012-04-25 CN CN 201220178600 patent/CN202655856U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108581583A (en) * | 2018-07-28 | 2018-09-28 | 重庆宏钢数控机床有限公司 | Ball-screw pre-stretching amount controllable adjustment device |
| CN108581583B (en) * | 2018-07-28 | 2019-08-20 | 重庆宏钢数控机床有限公司 | Ball-screw pre-stretching amount controllable adjustment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130425 |