CN205218071U - A device that is used for vertical lathe with round nut mode pretension main shaft bearing - Google Patents
A device that is used for vertical lathe with round nut mode pretension main shaft bearing Download PDFInfo
- Publication number
- CN205218071U CN205218071U CN201520916266.0U CN201520916266U CN205218071U CN 205218071 U CN205218071 U CN 205218071U CN 201520916266 U CN201520916266 U CN 201520916266U CN 205218071 U CN205218071 U CN 205218071U
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- CN
- China
- Prior art keywords
- round nut
- main shaft
- pretension
- vertical lathe
- group
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- 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.)
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Abstract
The utility model discloses a device that is used for vertical lathe with round nut mode pretension main shaft bearing, the device include main motor, fixed cylindrical cavity, rotating cylinder shape cavity, cylindrical hollow pneumatic cylinder, rotate pull rod, chucking device, a location preloading device is a cylindrical device that is used for vertical lathe with round nut mode pretension main shaft bearing. Main motor drives the driven shaft rotation through connecting the driving shaft, the driven shaft is through big flat housing and rotating cylinder shape cavity pretension and fixed cylindrical cavity relative rotation, fixed cylindrical cavity is internal to be equipped with rotatory pull rod, rotatory pull rod is given to cylindrical hollow pneumatic cylinder through big pneumatic cylinder and is pressed and the rotatory pull rod axial motion of belleville spring group control, rotatory pull rod passes through pin group and drives chucking device axial motion, the tooth is stung on through to rotating cylinder shape cavity, stinging the tooth meshing down, to drive the chucking device radially rotatory, the radial rotation of chucking device can drive round nut along the radial screw in of desire pretension main shaft of desire pretension, desire pretension round nut stroke can be controlled in order to reach the mesh to the accurate pretension of vertical lathe main shaft bearing to rotational speed and rotation angle through controlling main motor.
Description
Technical field
The invention belongs to Modern mechanical design technical field, be specifically related to a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing.
Background technology
At present, China's vertical type numerically controlled machine development is swift and violent, more and more higher to the requirement of machine tool accuracy.Platen main shaft belongs to larger rotation shaft, and bearing moves in a circle with workbench main shaft in workbench main shaft rotation process middle (center) bearing inner ring.But because bearing exists the not enough problem that play amount is excessive or the excessive play amount caused of pretightning force is too small caused of pretightning force in workbench main shaft rotary course.Cause machine tool chief axis end face run-out precision, circular runout precision inaccurate, thus affect the assembly quality of whole lathe.
Therefore, in order to ensure the rational play amount of bearing, a kind of cod location pre-tightening apparatus need be developed to keep the reasonability of main shaft bearing play amount, thus improving machine tool workbench main shaft rotation precision.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention provides a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing.
The present invention is achieved through the following technical solutions:
A kind of for vertical lathe with the device of round nut mode pretension main shaft bearing, comprise mair motor, shaft coupling, dial plate, driving shaft, bevel pinion, holding cylindrical cavity, taper roll bearing, rotational circle cylindrical chamber, upper gripping tooth bolt group, lower biting teeth, lower biting teeth bolt group, gripping mechanism, pin group, rotating rod, upper gripping tooth, large hydraulic cylinder, driven shaft, large helical gear, disk spring group, described mair motor is that stepper motor is connected by shaft coupling with driving shaft; Described driving shaft, driven shaft, respectively by two groups of angular contact ball bearing axial location, are rotated by helical gear engagement; Described holding cylindrical cavity and described rotational circle cylindrical chamber consist of taper roll bearing relative motion; Described cylinder type hollow hydraulic cylinder is a kind of hollow hydraulic means, moves axially, and rebounded by disk spring in order to promote rotating rod along main shaft; Described gripping mechanism is cylinder shape belt cylinder shape groove, rotates to pin location by rotating rod, and biting teeth is engaged disk spring convergent force and rotational circle cylindrical chamber is fixed, and pass through the device of jackscrew connecting machine tool main shaft round nut groove.
As further prioritization scheme of the present invention, be provided with described rotating rod in described holding cylindrical cavity, described cylinder type hollow hydraulic cylinder is installed in described rotating rod end, and described gripping mechanism drives clamping by described rotating rod.
As further prioritization scheme of the present invention, described mair motor is connected with described driving shaft by described shaft coupling, and described driving shaft is provided with described bevel pinion, and described bevel pinion engages with described large helical gear and rotates; The shaft shoulder that described large helical gear is arranged on described driven shaft drive described driven shaft to rotate.
As further prioritization scheme of the present invention, described holding cylindrical cavity is sealed by described holding cylindrical chamber end cap, and described holding cylindrical chamber end cap is provided with described dial plate.
As further prioritization scheme of the present invention, described gripping mechanism there is described pin hole group, described upper gripping tooth is connected by described upper gripping tooth bolt group with described rotational circle cylindricality chamber end cap, described lower biting teeth is connected by described lower biting teeth bolt group with described gripping mechanism, and described gripping mechanism is provided with jackscrew group.
This bearing pre-tightening device is by controlling the rotating cycle of main shaft round nut, the size of moment of torsion on round nut can be calculated by main motor current and revolution and be reflected on dial plate, thus the pretightning force that bearing is fixed, and effectively ensure that the reasonability of the play amount for pretension main shaft bearing; In addition, by changing the gripping mechanism of different size, pretension can be carried out to the machine tool chief axis of different-diameter.Compared with prior art, the invention has the beneficial effects as follows: compact conformation of the present invention, easy to operate, motion accurately, effectively can alleviate manual labor, can be used for machine tool chief axis or as leading screw, the pretension of speed reduction box shaft class.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention when unclamping;
Fig. 2 is the structural representation of the present invention when being engaged;
Fig. 3 is the partial enlarged drawing of the present invention's pull bar when unclamping;
Fig. 4 is the partial enlarged drawing of the present invention's pull bar when being engaged.
In figure: 1, mair motor; 2, shaft coupling; 3, dial plate; 4, holding cylindrical chamber end cap bolt group; 5, driving shaft; 6, bevel pinion; 7, driving shaft angular contact ball bearing; 8, holding cylindrical cavity; 9, taper roll bearing; 10, rotational circle cylindrical chamber; 11, large plane bearing; 12, cylindrical adjustment pad; 13, rotational circle cylindricality chamber end cap; 14, upper gripping tooth bolt group; 15, lower biting teeth; 16, lower biting teeth bolt group; 17, gripping mechanism; 18, jackscrew group; 19, pin group; 20, cylinder plate; 21, cylinder plate set bolt; 22, rotating rod; 23, driven shaft bolt group; 24, upper gripping tooth; 25, rotational circle cylindricality chamber end cap; 26, large hydraulic cylinder; 27, driven shaft; 28, large helical gear; 29, driven shaft angular contact ball bearing; 30, hydraulic cylinder button; 31, large hydraulic cylinder pipe joint; 32, disk spring group; 33, pull bar plane bearing; 34, cylinder type hollow hydraulic cylinder; 35, driven shaft end cap; 36, cylinder type hollow hydraulic cylinder pipe joint; 37, pull bar angular contact ball bearing; 38, knob; 39, holding cylindrical chamber end cap; 40 pin hole groups.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail.
See Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, of the present invention a kind of for vertical lathe with the location pre-tightening apparatus of round nut mode pretension main shaft bearing, include and comprise mair motor 1, shaft coupling 2, dial plate 3, driving shaft 5, bevel pinion 6, holding cylindrical cavity 8, taper roll bearing 9, rotational circle cylindrical chamber 10, lower biting teeth 15, gripping mechanism 17, rotating rod 22, upper gripping tooth 24, large hydraulic cylinder 26, driven shaft 27, large helical gear 28, disk spring group 32, cylinder type hollow hydraulic cylinder 34, pin hole group 40, described mair motor 1 is connected with described driving shaft 5 by described shaft coupling 2, described driving shaft 5 is provided with described bevel pinion 6, and described pinion 6 engages with described large helical gear 28 and rotates, the shaft shoulder that described large helical gear 28 is arranged on described driven shaft 27 drive described driven shaft 27 to rotate, described driven shaft 27 is located by driven shaft angular contact ball bearing 29 described in a pair, the outer race of driven shaft angular contact ball bearing 29 described in driving shaft angular contact ball bearing 7 described in described a pair and a pair respectively with described holding cylindrical chamber end cap 39 interference fit, described holding cylindrical cavity 8 is sealed by described holding cylindrical chamber end cap 39, described holding cylindrical chamber end cap 39 is provided with described dial plate 3, described large hydraulic cylinder pipe joint 31, hydraulic cylinder button 30, described taper roll bearing 9 is connected with the inner ring of bearing in an interference fit by the described outer wall of holding cylindrical cavity 8, the outer race of described taper roll bearing 9 is connected in an interference fit with the inwall of described rotational circle cylindrical chamber 10, and provides pretightning force by described cylindrical adjustment pad 12 and described rotational circle cylindricality chamber end cap 25, described rotational circle cylindricality chamber end cap 25 is connected by described rotational circle cylindrical chamber bolt group 14 with described rotational circle cylindrical chamber 10, described rotational circle cylindricality chamber end cap 25 is connected by described driven shaft bolt group 23 with described cylindrical adjustment pad 12, described large plane bearing 11 pressed on ring is located by the straight mouth of described holding cylindrical cavity 8, described large plane bearing 11 times rings provide pretightning force by described rotational circle cylindricality chamber end cap 25 and described cylindrical adjustment pad 12, described upper gripping tooth 24 is connected by described upper gripping tooth bolt group 14 with described rotational circle cylindricality chamber end cap 25, described lower biting teeth 15 is connected by described lower biting teeth bolt group 16 with described gripping mechanism 17, described gripping mechanism 17 is provided with described jackscrew group 18, described gripping mechanism 17 there is described pin hole group 40, described gripping mechanism 17 and described cylinder plate 20 by the mode of described pin group 19 and described pin hole group 40 interference fits to being connected, when described rotating rod 22 is strained, described upper gripping tooth 24 and the occlusion of described lower biting teeth 15 drive described rotational circle cylindrical chamber 10 to rotate, described gripping mechanism 17 drives clamping by described rotating rod 22, described rotating rod 22 upper end is provided with knob 38, described rotating rod 22 lower end is connected with described cylinder plate 20, described pin group 19 interference fit is in described cylinder plate 20, described cylinder plate 20 is fixed by described cylinder plate set bolt 21 with described rotating rod 22, in described holding cylindrical cavity 8, described rotating rod 22 is installed, described cylinder type hollow hydraulic cylinder 34 is installed in described rotating rod 22 end, described disk spring group 32 is connected by the mode of welding with the bottom of described cylinder type hollow hydraulic cylinder 34, the inwall of described hollow hydraulic cylinder 34 and described rotating rod 22 are connected by the mode of interference fit and control its axial stretching, described pull bar plane bearing 32 pressed on ring and described cylinder type hollow hydraulic cylinder 34 compress, the shaft shoulder of described pull bar plane bearing 32 times rings and described rotating rod 22 compresses, described cylinder type hollow hydraulic cylinder 34 is connected by pull bar angular contact ball bearing 37 described in a group with described driven shaft 27, described rotating rod 22 is connected with described knob 38, described cylinder type hollow hydraulic cylinder pipe joint 36 is connected with described large hydraulic cylinder pipe joint 31,
Described structure installment of the present invention has mair motor, by controlling the rotating, corner etc. of mair motor, the size of be applied to machine tool mainshaft bearing pretightning force can be obtained by mathematical computations, and be reflected on dial plate by rotational circle cylindrical chamber and the relative motion of holding cylindrical cavity.Mair motor is by the effect fixedly serving double reduction of helical gear engagement and driven shaft and rotational circle cylindrical chamber on driving shaft, driven shaft.By controlling the flexible of cylinder type hollow hydraulic cylinder, rotating knob and controlling rotating rod position to reach the object of plug pin group, upper and lower biting teeth is engaged.Gripping mechanism, by jackscrew group, directly utilizes the screwed hole of the round nut for pretension to carry out radial location.Also according to different nut size, shape, different gripping mechanisms can be changed by rotating rod releasing orientation.
Claims (4)
1. one kind for vertical lathe with the device of round nut mode pretension main shaft bearing, comprise mair motor (1), shaft coupling (2), dial plate (3), driving shaft (5), bevel pinion (6), holding cylindrical cavity (8), taper roll bearing (9), rotational circle cylindrical chamber (10), upper gripping tooth bolt group (14), lower biting teeth (15), lower biting teeth bolt group (16), gripping mechanism (17), pin group (19), rotating rod (22), upper gripping tooth (24), large hydraulic cylinder (26), driven shaft (27), large helical gear (28), disk spring group (32), cylinder type hollow hydraulic cylinder (34), pin hole group (40), in described holding cylindrical cavity (8), described rotating rod (22) is installed, described cylinder type hollow hydraulic cylinder (34) is installed in described rotating rod (22) end, described gripping mechanism (17) drives clamping by described rotating rod (22).
2. according to claim 1 a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing, it is characterized in that: described mair motor (1) is connected with described driving shaft (5) by described shaft coupling (2), described driving shaft (5) is provided with described bevel pinion (6), described bevel pinion (6) engages with described large helical gear (28) and rotates; The shaft shoulder that described large helical gear (28) is arranged on described driven shaft (27) drive described driven shaft (27) to rotate.
3. according to claim 1 a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing, it is characterized in that: described holding cylindrical cavity (8) is sealed by described holding cylindrical chamber end cap (39), described holding cylindrical chamber end cap (39) is provided with described dial plate (3).
4. according to claim 1 a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing, it is characterized in that: described gripping mechanism (17) has described pin hole group (40), described upper gripping tooth (24) is connected by described upper gripping tooth bolt group (14) with described rotational circle cylindricality chamber end cap (25), described lower biting teeth (15) is connected by described lower biting teeth bolt group (16) with described gripping mechanism (17), and described gripping mechanism (17) is provided with jackscrew group (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916266.0U CN205218071U (en) | 2015-11-17 | 2015-11-17 | A device that is used for vertical lathe with round nut mode pretension main shaft bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520916266.0U CN205218071U (en) | 2015-11-17 | 2015-11-17 | A device that is used for vertical lathe with round nut mode pretension main shaft bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205218071U true CN205218071U (en) | 2016-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520916266.0U Withdrawn - After Issue CN205218071U (en) | 2015-11-17 | 2015-11-17 | A device that is used for vertical lathe with round nut mode pretension main shaft bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205218071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345040A (en) * | 2015-11-17 | 2016-02-24 | 智伯雄 | Device used for vertical lathe and used for pre-tightening main shaft bearing through round nut |
-
2015
- 2015-11-17 CN CN201520916266.0U patent/CN205218071U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345040A (en) * | 2015-11-17 | 2016-02-24 | 智伯雄 | Device used for vertical lathe and used for pre-tightening main shaft bearing through round nut |
| CN105345040B (en) * | 2015-11-17 | 2017-05-31 | 智伯雄 | It is a kind of for vertical lathe with the device of round nut mode pretension main shaft bearing |
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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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160511 Effective date of abandoning: 20170531 |