CN205600393U - Transmission shaft structure and vertical machining center who has this transmission shaft structure - Google Patents
Transmission shaft structure and vertical machining center who has this transmission shaft structure Download PDFInfo
- Publication number
- CN205600393U CN205600393U CN201620321479.3U CN201620321479U CN205600393U CN 205600393 U CN205600393 U CN 205600393U CN 201620321479 U CN201620321479 U CN 201620321479U CN 205600393 U CN205600393 U CN 205600393U
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- screw mandrel
- transmission shaft
- shaft structure
- bearing
- tailstock
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Abstract
The utility model relates to a transmission shaft structure and vertical machining center who has this transmission shaft structure, wherein, the transmission shaft structure includes lead screw, nut and lead screw tailstock, nut and lead screw threaded connection, the lead screw is worn to establish in the lead screw tailstock, and is equipped with the bearing between lead screw and the lead screw tailstock, the bearing has inner circle and outer lane, the outer lane of bearing is fixed with the lead screw tailstock, the inner circle of bearing is fixed with the lead screw, spring and lead screw assembly are passed through to the at least one end of inner circle. Vertical machining center has the transmission shaft structure, still include straight -line motion mechanism, straight -line motion mechanism passes through transmission shaft structure drive. The utility model discloses a transmission shaft structure adopts bearing inner race to kill and mode that the inner circle utilized a pair of disc spring preset bearing to be stressed, has effectively eliminated the phenomenon of bearing because of the too big damage of lead screw extension atress to kept bearing inner race to have suitable packing force.
Description
Technical field
This utility model relates to a kind of transmission shaft structure and the vertical machining centre with this transmission shaft structure.
Background technology
Traditional screw mandrel prestretching, uses the structure that all kills of bearing internal external circle, when screw mandrel heat up elongated exceed prestretching amount time, screw mandrel can be caused to extrude bearing, make shaft strength excessive and damage.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome existing screw mandrel easily to extrude bearing, makes shaft strength excessive and the deficiency damaged, and this utility model provides a kind of transmission shaft structure and the vertical machining centre with this transmission shaft structure.
This utility model solves its technical problem and be the technical scheme is that a kind of transmission shaft structure, including screw mandrel, nut and screw mandrel tailstock, described nut is connected with wire rod thread, described screw mandrel is located in screw mandrel tailstock, and between screw mandrel and screw mandrel tailstock, it being provided with bearing, described bearing has inner ring and outer ring, and the outer ring of described bearing is fixed with screw mandrel tailstock, the inner ring of described bearing is fixed with screw mandrel, and at least one end of described inner ring is assembled with screw mandrel by spring.
Described spring is disk spring.
One end away from screw mandrel afterbody of described inner ring is provided with the first disk spring, there is on described screw mandrel a screw mandrel step surface, described screw mandrel tailstock has a tailstock step surface, one end of described first disk spring is against one end away from screw mandrel afterbody of bearing inner race, and the other end of the first disk spring is against screw mandrel step surface and tailstock step surface.Tailstock step surface can give the first disk spring one support so that one end of the first disk spring obtains the support of two step surfaces, Stability Analysis of Structures.
One end of the close screw mandrel afterbody of described inner ring is provided with the second disk spring, and one end of described second disk spring is against one end of the close screw mandrel afterbody of bearing inner race.
One end away from screw mandrel afterbody of described inner ring is provided with radially oil sealing, and one end of the close screw mandrel afterbody of described inner ring is provided with dust-proof spacer ring, and the other end of described second disk spring is against described dust-proof spacer ring.
Motor-driven rotation is passed through in one end away from screw mandrel tailstock of described screw mandrel, and described motor is fixed by motor cabinet.
Described bearing is angular contact ball bearing.
A kind of vertical machining centre with described transmission shaft structure, including straight-line motion mechanism, described straight-line motion mechanism is driven by described transmission shaft structure.
Described straight-line motion mechanism includes X-axis drive mechanism, Y-axis drive mechanism and Z-axis transmission mechanism, the direction of motion of described X-axis drive mechanism, Y-axis drive mechanism and Z-axis transmission mechanism is mutually perpendicular to two-by-two, and X-axis drive mechanism, Y-axis drive mechanism and Z-axis transmission mechanism are driven by a described transmission shaft structure respectively.
Also include tool magazine and for placing the rotary oscillation workbench of workpiece to be processed, described tool magazine is fixed with described straight-line motion mechanism, described rotary oscillation workbench has rotation mechanism in vertical shaft and vertical rotating mechaism, described straight-line motion mechanism and rotary oscillation workbench and is each attached on a base.
The beneficial effects of the utility model are, transmission shaft structure of the present utility model and the vertical machining centre with this transmission shaft structure, bearing outer ring is used to kill and mode that inner ring utilizes the presetting bearing of spring to be stressed, effectively eliminate bearing because screw mandrel elongation the phenomenon of the excessive damage of stress, and maintain bearing inner race and have suitable thrust；Wherein, when screw mandrel is by thermal stretching, at the first disk spring, gap reduces, and at corresponding second pair of butterfly spring, gap increases.This change can cause screw mandrel pretension to be slightly changed, but can ensure that pretension is in claimed range.Without the first disk spring, bearing inner race directly bears against on the shaft shoulder of screw mandrel, during screw mandrel thermal stretching, bearing can be caused to bear excessive axial force and damage.Without the second disk spring, during screw mandrel thermal stretching, can cause occurring between the locking nut of bearing and fixing screw mandrel gap, screw mandrel pretension disappears, and affects transmission accuracy.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of transmission shaft structure embodiment 1 of the present utility model.
Fig. 2 is the partial enlarged drawing in Fig. 1 at A.
Fig. 3 is the structural representation of transmission shaft structure embodiment 2 of the present utility model.
Fig. 4 is the partial enlarged drawing in Fig. 3 at B.
Fig. 5 is the structural representation of vertical machining centre optimum embodiment of the present utility model.
In figure 1, screw mandrel, 1-1, screw mandrel step surface, 2, nut, 3, screw mandrel tailstock, 3-1, tailstock step surface, the 4, first disk spring, 5, bearing, 5-1, inner ring, 5-2, outer ring, 6, radially oil sealing, 7, dust-proof spacer ring, 8, motor, 9, motor cabinet, 10, tool magazine, 11, rotary oscillation workbench, 12, X-axis drive mechanism, 13, Y-axis drive mechanism, 14, Z-axis transmission mechanism, 15, base, 16, planker, the 17, second disk spring, 18, locking nut.
Detailed description of the invention
Presently in connection with accompanying drawing, this utility model is described in further detail.These accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is described the most in a schematic way, and therefore it only shows the composition relevant with this utility model.
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of transmission shaft structure of the present utility model, including screw mandrel 1, nut 2, screw mandrel tailstock 3 and the first disk spring 4, described nut 2 is threadeded with screw mandrel 1, described screw mandrel 1 is located in screw mandrel tailstock 3, and between screw mandrel 1 and screw mandrel tailstock 3, it being provided with bearing 5, described bearing 5 is angular contact ball bearing.Described bearing 5 has inner ring 5-1 and outer ring 5-2, the outer ring 5-2 of described bearing 5 to be fixed with screw mandrel tailstock 3, and the inner ring 5-1 of described bearing 5 fixes with screw mandrel 1.One end away from screw mandrel tailstock 3 of described screw mandrel 1 is driven by motor 8 and rotates, and described motor 8 is fixed by motor cabinet 9.
There is on described screw mandrel 1 a screw mandrel step surface 1-1, described screw mandrel tailstock 3 has a tailstock step surface 3-1, one end of described first disk spring 4 is against one end away from screw mandrel 1 afterbody of bearing 5 inner ring 5-1, and the other end of the first disk spring 4 is against screw mandrel step surface 1-1 and tailstock step surface 3-1.Tailstock step surface 3-1 can give the first disk spring 4 one support so that one end of the first disk spring 4 obtains the support of two step surfaces, Stability Analysis of Structures.
One end away from screw mandrel 1 afterbody of described inner ring 5-1 is provided with radially oil sealing 6, and one end of close screw mandrel 1 afterbody of described inner ring 5-1 is provided with dust-proof spacer ring 7.
The transmission shaft structure of the present embodiment, it is possible to eliminate screw mandrel and produce extruding because temperature rise is elongated.The present embodiment uses the mode that bearing outer ring 5-2 kills and inner ring 5-1 utilizes a pair first presetting bearings of butterfly spring 4 to be stressed, offset the screw mandrel elongation from the motor side of screw mandrel 1 to screw mandrel tailstock 3, effectively eliminate bearing because screw mandrel elongation the phenomenon of the excessive damage of stress, and maintain bearing inner race 5-1 and have suitable thrust.
Embodiment 2
As shown in Figure 3, Figure 4, the transmission shaft structure of the present embodiment is roughly the same with the structure of embodiment 1, difference is, one end of close screw mandrel 1 afterbody of inner ring 5-1 is additionally provided with the second disk spring 17, one end of described second disk spring 17 is against one end of close screw mandrel 1 afterbody of bearing 5 inner ring 5-1, and the other end of described second disk spring 17 is against described dust-proof spacer ring 7.
The present embodiment uses the mode that bearing outer ring 5-2 kills and inner ring 5-1 utilizes a pair first disk springs 4 and a pair second presetting bearings of butterfly spring 17 to be stressed, the motor side offsetting screw mandrel 1 extends to the screw mandrel between screw mandrel tailstock 3, and extend from screw mandrel tailstock 3 to the screw mandrel of screw mandrel 1 afterbody, effectively eliminate bearing because screw mandrel elongation the phenomenon of the excessive damage of stress, and maintain bearing inner race 5-1 and have suitable thrust.Without the first disk spring 4, bearing 5 inner ring 5-1 directly bears against on the shaft shoulder of screw mandrel 1, during screw mandrel 1 thermal stretching, bearing 5 can be caused to bear excessive axial force and damage.Without the second disk spring 17, the spacer ring 7 before locking nut directly bears against on bearing 5, during screw mandrel 1 thermal stretching, can cause bearing 5, occur gap between spacer ring 7 and locking nut, and screw mandrel 1 pretension disappears, and affects transmission accuracy.
The installation steps of the present embodiment are as follows:
1, assembling screw mandrel tailstock 3, now the screw mandrel tailstock 3 of outmost turns is not fixed, and can move axially along screw mandrel 1.
2, rotation tail end locking nut 18 to predeterminated position 1 (determining with screw mandrel 1 breech face distance by measuring locking nut 18), this position makes the first disk spring 4 and the second disk spring 17 all produce compression, bears default pressure A.In the process, outmost turns screw mandrel tailstock 3 can axially move to the direction of locking nut 18 precession along screw mandrel 1 accordingly.
3, fixing screw mandrel tailstock 3, fixing front verification installed surface gap need to be in claimed range.
4, continue to screw locking nut 18 to predeterminated position 2 (determining by measuring locking nut 18) with screw mandrel 1 breech face distance.Now, the second disk spring 17 compression is relatively large, it is possible to provide meet the screw mandrel pretension required.
As shown in Figure 5, a kind of vertical machining centre with described transmission shaft structure of the present utility model, including straight-line motion mechanism, described straight-line motion mechanism is driven by described transmission shaft structure, in Fig. 3, transmission shaft structure is fixed with straight-line motion mechanism by planker 16.Also include tool magazine 10 and for placing the rotary oscillation workbench 11 of workpiece to be processed, described straight-line motion mechanism includes X-axis drive mechanism 12, Y-axis drive mechanism 13 and Z-axis transmission mechanism 14, the direction of motion of described X-axis drive mechanism 12, Y-axis drive mechanism 13 and Z-axis transmission mechanism 14 is mutually perpendicular to two-by-two, and X-axis drive mechanism 12, Y-axis drive mechanism 13 and Z-axis transmission mechanism 14 are driven by a described transmission shaft structure respectively；Described tool magazine 10 is fixed with described straight-line motion mechanism, and described rotary oscillation workbench 11 has rotation mechanism in vertical shaft and vertical rotating mechaism, described straight-line motion mechanism and rotary oscillation workbench 11 and is each attached on a base 15.Straight-line motion mechanism the most of the present utility model and rotary oscillation workbench 11 form five axle drive mechanisms.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff can carry out various change and amendment completely in the range of without departing from this utility model technological thought.The content that the technical scope of this utility model is not limited in description, it is necessary to determine its technical scope according to right.
Claims (10)
1. a transmission shaft structure, it is characterised in that: include screw mandrel (1), nut (2) and screw mandrel tailstock (3),
Described nut (2) is threadeded with screw mandrel (1), and described screw mandrel (1) is located in screw mandrel tailstock (3),
And between screw mandrel (1) and screw mandrel tailstock (3), it being provided with bearing (5), described bearing (5) has inner ring (5-1)
With outer ring (5-2), the outer ring (5-2) of described bearing (5) is fixing with screw mandrel tailstock (3), described bearing
(5) inner ring (5-1) is fixed with screw mandrel (1), and spring is passed through at least one end of described inner ring (5-1)
Assemble with screw mandrel.
2. transmission shaft structure as claimed in claim 1, it is characterised in that: described spring is disk spring.
3. transmission shaft structure as claimed in claim 1, it is characterised in that: described inner ring (5-1) away from
One end of screw mandrel (1) afterbody is provided with the first disk spring (4), and described screw mandrel has a screw mandrel on (1)
Step surface (1-1), described screw mandrel tailstock (3) has a tailstock step surface (3-1), described first dish bullet
One end of spring (4) against one end away from screw mandrel (1) afterbody of bearing (5) inner ring (5-1), first
The other end of disk spring (4) is against screw mandrel step surface (1-1) and tailstock step surface (3-1).
4. the transmission shaft structure as according to any one of claim 1-3, it is characterised in that: described inner ring (5-1)
One end of close screw mandrel (1) afterbody be provided with the second disk spring (17), described second disk spring (17)
One end against one end of close screw mandrel (1) afterbody of bearing (5) inner ring (5-1).
5. transmission shaft structure as claimed in claim 4, it is characterised in that: described inner ring (5-1) away from
One end of screw mandrel (1) afterbody is provided with radially oil sealing (6), close screw mandrel (1) tail of described inner ring (5-1)
The one end in portion is provided with dust-proof spacer ring (7), and the other end of described second disk spring (17) is against described dust-proof
Spacer ring (7).
6. transmission shaft structure as claimed in claim 4, it is characterised in that: described screw mandrel (1) away from silk
One end of bar tailstock (3) is driven by motor (8) and rotates, and described motor (8) passes through motor cabinet (9)
Fixing.
7. transmission shaft structure as claimed in claim 1, it is characterised in that: described bearing (5) is angular contact
Ball bearing.
8. band is just like a vertical machining centre for the transmission shaft structure according to any one of claim 1-7,
It is characterized in that: include that straight-line motion mechanism, described straight-line motion mechanism are driven by described transmission shaft structure.
9. vertical machining centre as claimed in claim 8, it is characterised in that: described straight-line motion mechanism bag
Including X-axis drive mechanism (12), Y-axis drive mechanism (13) and Z-axis transmission mechanism (14), described X-axis passes
The direction of motion of motivation structure (12), Y-axis drive mechanism (13) and Z-axis transmission mechanism (14) is the most mutual
Vertically, X-axis drive mechanism (12), Y-axis drive mechanism (13) and Z-axis transmission mechanism (14) lead to respectively
Cross a described transmission shaft structure to drive.
10. vertical machining centre as claimed in claim 9, it is characterised in that: also include tool magazine (10) and
For placing the rotary oscillation workbench (11) of workpiece to be processed, described tool magazine (10) and described linear motion
Mechanism is fixed, and described rotary oscillation workbench (11) has rotation mechanism in vertical shaft and vertical rotating mechaism, institute
State straight-line motion mechanism and rotary oscillation workbench (11) is each attached on a base (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321479.3U CN205600393U (en) | 2016-04-15 | 2016-04-15 | Transmission shaft structure and vertical machining center who has this transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620321479.3U CN205600393U (en) | 2016-04-15 | 2016-04-15 | Transmission shaft structure and vertical machining center who has this transmission shaft structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205600393U true CN205600393U (en) | 2016-09-28 |
Family
ID=56973326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620321479.3U Expired - Fee Related CN205600393U (en) | 2016-04-15 | 2016-04-15 | Transmission shaft structure and vertical machining center who has this transmission shaft structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205600393U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817939A (en) * | 2016-04-15 | 2016-08-03 | 江苏润德精密机械有限公司 | Transmission shaft structure and vertical machining center with transmission shaft structure |
-
2016
- 2016-04-15 CN CN201620321479.3U patent/CN205600393U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105817939A (en) * | 2016-04-15 | 2016-08-03 | 江苏润德精密机械有限公司 | Transmission shaft structure and vertical machining center with transmission shaft structure |
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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 |
Granted publication date: 20160928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |