CN209078346U - Mandrel device is used in hollow shaft processing - Google Patents
Mandrel device is used in hollow shaft processing Download PDFInfo
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- CN209078346U CN209078346U CN201821983017.3U CN201821983017U CN209078346U CN 209078346 U CN209078346 U CN 209078346U CN 201821983017 U CN201821983017 U CN 201821983017U CN 209078346 U CN209078346 U CN 209078346U
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Abstract
The utility model relates to hollow shaft processing technique fields, provide a kind of hollow shaft processing mandrel device, including mandrel, two support plates being arranged on mandrel；Circumference is provided with N number of radial adjustment device on the outer peripheral surface of each support plate, and each radial adjustment device includes the accommodation groove, screw rod and adjusting nut being radially arranged on support plate outer peripheral surface；An external thread section is provided on screw rod, adjusting nut is threaded on the external thread section of screw rod；Screw rod one end insertion accommodation groove in, so that adjusting nut and support plate periphery face contact；Screw rod can be in accommodation groove along the axial movement of screw rod.When carrying out secondary process to hollow shaft using the mandrel device, clamped one time is only needed, the processing of hollow shaft outer circle, end face and both ends seam allowance can be completed, guarantees the unification of layout design benchmark and machining benchmark；Reduce clamping times, reduce non-cutting time, improves processing efficiency；The abrasion for avoiding hollow shaft outer circle improves the presentation quality of product.
Description
Technical field
The utility model relates to hollow shaft processing technique field, in particular to mandrel device is used in a kind of hollow shaft processing.
Background technique
In the finishing of the middle empty class main shaft of hydropower industry, hollow shaft should meet claimed below: the outer circle of main shaft and end
Face is relative to both ends seam allowance total run-out≤0.02mm, the bounce of both ends seam allowance and end face run-out≤0.02mm；Above-mentioned requirements connect substantially
It is bordering on the lathe limit.
Currently, the processing method of hollow shaft is: firstly, using first Double Tops processing excircles, after the completion of outer circle finishing, then
Using the supporting way of " one support of folder ", the processing of both ends seam allowance is completed.In the above method, outer circle is to separate to add with both ends seam allowance
Work, in order to meet the finishing requirements of hollow shaft, frame mouth is required high, while frame mouth work in-process is easy to appear abrasion,
Influence the presentation quality of workpiece.After the completion of the outer circle finishing of hollow shaft, it is also necessary to change the supporting way of hollow shaft, realization pair
The processing of hollow shaft both ends seam allowance, and during the support of hollow shaft, in order to avoid damaging outer circle, brought to subsequent centering
It is greatly difficult, greatly reduce the processing efficiency of hollow shaft.In process, various unstable factors, example are easy to appear
Such as workpiece spins, play, and hollow shaft is caused not to be able to satisfy finishing requirements.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of hollow shaft processing for improving hollow shaft processing efficiency
Use mandrel device.
The technical scheme adopted by the utility model to solve the technical problem is as follows: hollow shaft processing mandrel device, including
Mandrel, two support plates being arranged on mandrel；The support plate and mandrel are coaxially disposed；Circle on the outer peripheral surface of each support plate
It is provided with N number of radial adjustment device week, wherein N is the positive integer more than or equal to 2；Between two neighboring radial adjustment device
Central angle be less than or equal to 180o；Each radial adjustment device includes the accommodating being radially arranged on support plate outer peripheral surface
Slot, screw rod and adjusting nut；An external thread section is provided on the screw rod, adjusting nut is threaded in the external thread section of screw rod
On；One end of screw rod is inserted into the accommodation groove, so that adjusting nut and support plate periphery face contact；The screw rod can hold
Set the axial movement in slot along screw rod.
Further, the inner end of the accommodation groove is provided with the radial sliding eye extended to support disk center；The screw rod
Inner end be provided with the sliding bar being slidably matched with sliding eye；The sliding bar is arranged in sliding eye and can be along sliding eye
It slides axially.
Further, the sliding eye and sliding bar are cylinder, are additionally provided between the sliding eye and sliding bar
Anti-rotation device.
Further, the anti-rotation device includes the sliding slot being axially disposed on sliding bar outer wall along sliding bar；Institute
It states position corresponding with sliding slot on the inner wall of sliding eye and is provided with sliding block；The sliding block protrudes into the sliding slot and can be in cunning
It is slidably matched in slot.
It further, further include ball ring, connector and locating part；The ball ring includes first end face and second end
Face；The outer end face of the screw rod is the first spherical surface of evagination；The second spherical surface of indent is provided in the first end face；The company
One end of fitting is connect with screw rod, and the other end of connector passes through the through-hole on ball ring and connect with locating part, so that first
Spherical surface and the second spheric are at mating spherical surfaces；Position corresponding with locating part is provided with receiving locating part in the second end face
Accommodating cavity；The locating part is arranged in the accommodating cavity.
Further, the second end face of the ball ring is arcwall face.
It further, further include end cap；The end cap is detachably connected in the second end face of ball ring；The end cap
It is upper that there is bearing surface.
Further, the bearing surface of the end cap is arcwall face.
It further, further include locking nut；The locking nut is threaded on the external thread section of screw rod.
Further, the mandrel is hollow shaft.
The beneficial effects of the utility model are: the hollow shaft processing mandrel device of the utility model, structure is simple, operation
It is convenient；When carrying out secondary process to hollow shaft using the mandrel device, clamped one time is only needed, hollow shaft outer circle, end can be completed
The processing in face and both ends seam allowance guarantees the unification of layout design benchmark and machining benchmark；Reduce clamping times, reduces auxiliary
Time improves processing efficiency；The abrasion for avoiding hollow shaft outer circle simultaneously, improves the presentation quality of product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the cross-sectional view of the accommodation groove and sliding eye in the utility model in support plate；
Fig. 4 is the attachment structure schematic diagram of sliding bar in the utility model, screw rod, ball ring and end cap；
Fig. 5 is A-A cross-sectional view in Fig. 4；
Fig. 6 is the explosive view of the connection structure of screw rod in the utility model, ball ring and end cap；
Fig. 7 is the structural schematic diagram that the utility model is mounted on hollow shaft inner hole.
Appended drawing reference in figure are as follows: 1- mandrel, 2- support plate, 3- radial adjustment device, 4- accommodation groove, 5- screw rod, 6- are adjusted
Nut, 7- sliding eye, 8- sliding bar, 9- sliding slot, 10- sliding block, 11- ball ring, 12- connector, 13- locating part, 14- first end
Face, 15- second end face, the first spherical surface of 16-, the second spherical surface of 17-, 18- through-hole, 19- accommodating cavity, 20- end cap, 21- bearing surface,
22- locking nut, 23- hollow shaft.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples:
As shown in Figures 1 to 6, hollow shaft processing mandrel device described in the utility model, including mandrel 1, setting exist
Two support plates 2 on mandrel 1；The support plate 2 is coaxially disposed with mandrel 1；Circumference is arranged on the outer peripheral surface of each support plate 2
There is N number of radial adjustment device 3, wherein N is the positive integer more than or equal to 2；Circle between two neighboring radial adjustment device 3
Heart angle is less than or equal to 180o；Each radial adjustment device 3 include be radially arranged on 2 outer peripheral surface of support plate accommodation groove 4,
Screw rod 5 and adjusting nut 6；An external thread section is provided on the screw rod 5, adjusting nut 6 is threaded in the external screw thread of screw rod 5
Duan Shang；One end of screw rod 5 is inserted into the accommodation groove 4, so that adjusting nut 6 and support plate 2 periphery face contact；The screw rod
5 can be in accommodation groove 4 along the axial movement of screw rod 5.
As shown in Figure 1, the mandrel 1 can be solid shafting, it is also possible to hollow shaft；The support plate 2 is annular in shape, branch
Support plate 2 is fixed on mandrel 1 and is coaxially disposed with mandrel 1.The support plate 2 can be by being welded and fixed with mandrel 1, can also
To realize connection by interference fit, it can be made into and be detachably connected according to the size of magnitude of interference, may be alternatively configured non-dismountable connection.
Two radial adjustment devices 3 at least can be set in each support plate 2, the central angle between two radial adjustment devices 3 is
180o.Preferably, as shown in Fig. 2, circumference uniform distribution is provided with 8 radial adjustment devices 3 on the outer peripheral surface of each support plate 2,
Central angle between two neighboring radial adjustment device 3 is 45o.An external thread section, adjusting nut 6 are provided on the screw rod 5
It is threaded on the external thread section；The length of the external thread section need to only be able to satisfy the practically necessary adjustment length of screw rod 5 i.e.
Can, the length of screw rod 5 can be equal to, might be less that the length of screw rod 5.
Fig. 1 and Fig. 2 show the state diagram that screw rod 5 is in initial position, at this point, adjusting nut 6 is located at outer spiral shell on screw rod 5
At the outer end of line section, the inner end of screw rod 5 is located in accommodation groove 4 and adjusting nut 6 is abutted with the outer peripheral surface of support plate 2.Work as needs
When being processed to hollow shaft 23, as shown in fig. 7, the mandrel device for being suitable for the hollow shaft 23 is selected, then by mandrel device
It is inserted into the inner hole of hollow shaft 23, the both ends of mandrel 1 are located at the outside of hollow shaft 23, and two support plates 2 are located at hollow shaft 23
Inside；The adjusting nut 6 on each radial adjustment device 3 is rotated, the outwardly directed length of adjusting screw rod 5 makes each screw rod 5
Outer end contacted with the inner wall of hollow shaft 23, continue to rotate adjusting nut 6 and tighten, hollow shaft 23 is mounted on mandrel device
On, the concentricity of the inner hole and mandrel 1 that guarantee hollow shaft 23 meets drawing requirement；Then by the fixture on lathe by mandrel 1
Both ends clamp, so that it may the outer circle of hollow shaft 23, end face and both ends seam allowance are processed.
The hollow shaft processing mandrel device of the utility model, structure is simple, easy to operate；Using the mandrel device centering
When empty axis 23 carries out secondary process, clamped one time is only needed, the processing of hollow shaft 23 outer circle, end face and both ends seam allowance can be completed,
Guarantee the unification of layout design benchmark and machining benchmark；Reduce clamping times, reduce non-cutting time, improves processing effect
Rate；The abrasion for avoiding 23 outer circle of hollow shaft simultaneously, improves the presentation quality of product.
In above-described embodiment, the size of accommodation groove 4 can be greater than the outer diameter of 5 external thread section of screw rod, and screw rod 5 is in accommodation groove 4
During the interior radial direction along support plate 2 moves, screw rod 5 is easy to happen skew or offset, causes the external screw thread on screw rod 5
It contacts and rubs with the inner wall of accommodation groove 4, will cause externally threaded damage on screw rod 5 when serious.Therefore, in order to guarantee spiral shell
Stability of the bar 5 in moving process, avoids the inner wall of external screw thread and accommodation groove 4 on screw rod 5 from rubbing, such as Fig. 2 to Fig. 4 institute
Show, the inner end of the accommodation groove 4 is provided with the radial sliding eye 7 extended to 2 center of support plate；The inner end of the screw rod 5 is arranged
There is the sliding bar 8 being slidably matched with sliding eye 7；The sliding bar 8 is arranged in sliding eye 7 and can slide along the axial direction of sliding eye 7
It is dynamic.The sliding bar 8 is coaxially disposed and is integrally formed with screw rod 5；By the way that the cooperation of sliding eye 7 and sliding bar 8 is arranged, to spiral shell
Bar 5 play the guiding role.When passing through the extension elongation of 6 adjusting screw rod 5 of adjusting nut, sliding bar 8 is in sliding eye 7 along support plate
2 radial direction is moved, and is oriented to the moving direction of screw rod 5, is avoided screw rod 5 that skew or offset occurs, be ensure that screw rod 5
Mobile stability.
The sliding bar 8 can be rectangular, rectangle, polygon, parallelogram along cross sectional shape perpendicular to its axial direction
Or irregular shape etc..Preferably, as shown in Figures 2 to 4, the sliding eye 7 and sliding bar 8 are the cylinder matched
Shape.When being installed by the mandrel device to hollow shaft 23, realized by the pretightning force between adjusting nut 6 and screw rod 5
Hollow shaft 23 is fixedly connected with mandrel device, when the weight of hollow shaft 23 is bigger, to guarantee hollow shaft 23 in process
Stability, required pretightning force is bigger.And since sliding bar 8 and sliding eye 7 are cylinder, tightening adjusting nut 6
During, it may occur that the phenomenon that sliding bar 8 rotates in sliding groove 7, serious person will cause between adjusting nut 6 and screw rod 5
Pretightning force be not further added by.Therefore, in order to avoid during tightening adjusting nut 6 sliding bar 8 rotated in sliding groove 7,
Preferably, anti-rotation device is additionally provided between the sliding eye 7 and sliding bar 8.By the way that anti-rotation device is arranged, protect
Under any circumstance, the sliding bar 8 cannot all rotate card in sliding eye 7, improve the stability of whole device.
The anti-rotation device includes the sliding slot 9 being axially disposed on 8 outer wall of sliding bar along sliding bar 8；The sliding
Position corresponding with sliding slot 9 is provided with sliding block 10 on the inner wall in hole 7；The sliding block 10 protrudes into the sliding slot 9 and can be in cunning
It is slidably matched in slot 9.During the extension of adjusting screw rod 5, the sliding block 10 is slidably matched with sliding slot 9 always.Such as
Shown in Fig. 5, multiple sliding slots 9 can be provided on the outer wall of the sliding bar 8 with circumference；Preferably, the outer wall of the sliding bar 8
Upper circumference uniform distribution is there are three sliding slot 9, and there are three sliding blocks 10 for position setting corresponding with sliding slot 9 on the inner wall of the sliding eye 7.
The anti-rotation device can also be the sliding block 10 being arranged on sliding bar 8 and be arranged in sliding with sliding block 10 on sliding eye 7
The sliding slot 9 of dynamic cooperation.
As shown in Figure 4 and Figure 6, the hollow shaft processing mandrel device of the utility model further includes ball ring 11, connector
12 and locating part 13；The ball ring 11 includes first end face 14 and second end face 15；The outer end face of the screw rod 5 is evagination
First spherical surface 16；The second spherical surface 17 of indent is provided in the first end face 14；One end of the connector 12 and screw rod 5 connect
It connects, the other end of connector 12 passes through the through-hole 18 on ball ring 11 and connect with locating part 13, so that the first spherical surface 16 and the
Two spherical surfaces 17 form mating spherical surfaces；Position corresponding with locating part 13, which is provided with, in the second end face 15 accommodates locating part 13
Accommodating cavity 19；The locating part 13 is arranged in the accommodating cavity 19.The radius of a ball of first spherical surface 16 and the second spherical surface 17
It is equal, realize mating spherical surfaces.Preferably, the second end face 15 of the ball ring 11 is arcwall face, the radius of arcwall face is in
The internal diameter of empty axis 23 is equal.Arcwall face is set by second end face 15, increases the contact surface of second end face 15 Yu hollow shaft 23
Product, improves the stability of whole device.By setting connector 12 and locating part 13, ball ring 11 is made to be connected to screw rod 5
End.The connector 12 can be connecting rod, and the locating part 13 can be gag lever post.Preferably, the connector 12
It is integrated with locating part 13, which is screw or bolt, and connector 12 is that screw or bolt have externally threaded bar
Portion, connector 12 are threadedly coupled with screw rod 5, and locating part 13 is the head of screw or bolt.
In use, by rotation adjusting nut 6, the outwardly directed length of adjusting screw rod 5, and then make the second of ball ring 11
End face 15 is contacted with the inner surface of hollow shaft 23, and hollow shaft 23 is mounted on mandrel device by realization.Due to the hollow shaft 23
Inner surface be arcwall face and be non-polished surface, therefore, when the second end on the inner surface of hollow shaft 23 with ball ring 11
When the position that face 23 contacts is uneven, the inner surface of hollow shaft 23 can generate non-radial reaction force to ball ring 11；It is logical
The mating spherical surfaces of the first spherical surface 16 and the second spherical surface 17 of ball ring 11 of 5 end of screw rod are crossed, automatic adjustable balance guarantees entire
The stress balance of device.By the way that accommodating cavity 19 is arranged, it is located at locating part 13 in the accommodating cavity 19, when the second end of ball ring 11
When the inner surface of face 15 and hollow shaft 23 contacts, locating part 13 and the inner surface of hollow shaft 23 is avoided to contact.
The hollow shaft processing mandrel device of the utility model further includes end cap 20；The end cap 20 is detachably connected to
In the second end face 15 of ball ring 11；There is bearing surface 21 on the end cap 20.The bearing surface 21 of the end cap 20 is arcwall face.
The end cap 20 can be detachably connected to the second end face of ball ring 11 by helicitic texture, buckle structure, bolt arrangement
On 15, by the way that detachably connected structure is arranged, it is convenient for changing.The bearing surface 21 of the end cap 20 is the interior table with hollow shaft 23
The face of face contact；By setting arcwall face for bearing surface 21, the contact area of itself and hollow shaft 23 is increased.Preferably,
A set of end-cap assembly is formed by least two end caps 20, the radius of the arc bearing surface 21 of each end cap 20 is all different；It uses
When, it not only can guarantee for the hollow shaft 23 of different dimensions in the end cap 20 of the end of ball ring 11 setting dimension
The stability of whole device, moreover it is possible to save the cost.
After on the hollow shaft processing mandrel device for be installed to hollow shaft 23 the utility model, whole device is being rotated
In the process, it is loosened will cause adjusting nut 6 due to vibrating, impact etc., influences the tightness and reliability being threadedly coupled.Cause
This, in order to guarantee the tightness and reliability that are threadedly coupled, preferably, hollow shaft processing mandrel device further includes locking screw
Mother 22；The locking nut 22 is threaded on the external thread section of screw rod 5.In use, tightening adjusting nut 6 and locking respectively
Nut 22, the axial force generated between two nuts, increase the frictional force between nut pitch and bolt tooth and prevent nut from
It is dynamic to loosen, increase the reliability of threaded connection.
Claims (10)
1. hollow shaft processing mandrel device, it is characterised in that: including mandrel (1), two support plates being arranged on mandrel (1)
(2)；The support plate (2) and mandrel (1) are coaxially disposed；Circumference is provided with N number of radial tune on the outer peripheral surface of each support plate (2)
Regulating device (3), wherein N is the positive integer more than or equal to 2；Central angle between two neighboring radial adjustment device (3) is small
In or equal to 180 °；
Each radial adjustment device (3) includes the accommodation groove (4) being radially arranged on support plate (2) outer peripheral surface, screw rod (5) and adjusts
It saves nut (6)；An external thread section is provided on the screw rod (5), adjusting nut (6) is threaded in the external screw thread of screw rod (5)
Duan Shang；One end of screw rod (5) is inserted into the accommodation groove (4), so that adjusting nut (6) and support plate (2) periphery face contact；
The screw rod (5) can be in accommodation groove (4) along the axial movement of screw rod (5).
2. hollow shaft processing mandrel device according to claim 1, it is characterised in that: the inner end of the accommodation groove (4)
It is provided with the radial sliding eye (7) extended to support plate (2) center；The inner end of the screw rod (5) is provided with sliding with sliding eye (7)
The sliding bar (8) of dynamic cooperation；Sliding bar (8) setting is interior in sliding eye (7) and can sliding axially along sliding eye (7).
3. hollow shaft processing mandrel device according to claim 2, it is characterised in that: the sliding eye (7) and sliding
Bar (8) is cylinder, is additionally provided with anti-rotation device between the sliding eye (7) and sliding bar (8).
4. hollow shaft processing mandrel device according to claim 3, it is characterised in that: the anti-rotation device includes edge
The sliding slot (9) of sliding bar (8) being axially disposed on sliding bar (8) outer wall；On the inner wall of the sliding eye (7) with sliding slot (9)
Corresponding position is provided with sliding block (10)；The sliding block (10) is protruded into the sliding slot (9) and can be slided in sliding slot (9)
Cooperation.
5. hollow shaft processing mandrel device according to claim 1, it is characterised in that: further include ball ring (11), connect
Fitting (12) and locating part (13)；The ball ring (11) includes first end face (14) and second end face (15)；The screw rod (5)
Outer end face be evagination the first spherical surface (16)；The second spherical surface (17) of indent is provided on the first end face (14)；It is described
One end of connector (12) is connect with screw rod (5), and the other end of connector (12) passes through through-hole (18) on ball ring (11), simultaneously
It is connect with locating part (13), so that the first spherical surface (16) and the second spherical surface (17) form mating spherical surfaces；The second end face (15)
Upper position corresponding with locating part (13) is provided with the accommodating cavity (19) for accommodating locating part (13)；Locating part (13) setting
In the accommodating cavity (19).
6. hollow shaft processing mandrel device according to claim 5, it is characterised in that: the second of the ball ring (11)
End face (15) is arcwall face.
7. hollow shaft processing mandrel device according to claim 5 or 6, it is characterised in that: further include end cap (20)；Institute
End cap (20) is stated to be detachably connected in the second end face (15) of ball ring (11)；There is bearing surface on the end cap (20)
(21)。
8. hollow shaft processing mandrel device according to claim 7, it is characterised in that: the bearing surface of the end cap (20)
It (21) is arcwall face.
9. hollow shaft processing mandrel device according to any one of claims 1 to 6, it is characterised in that: also
Including locking nut (22)；The locking nut (22) is threaded on the external thread section of screw rod (5).
10. hollow shaft processing mandrel device according to any one of claims 1 to 6, it is characterised in that: institute
Stating mandrel (1) is hollow shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821983017.3U CN209078346U (en) | 2018-11-28 | 2018-11-28 | Mandrel device is used in hollow shaft processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821983017.3U CN209078346U (en) | 2018-11-28 | 2018-11-28 | Mandrel device is used in hollow shaft processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209078346U true CN209078346U (en) | 2019-07-09 |
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ID=67125914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821983017.3U Active CN209078346U (en) | 2018-11-28 | 2018-11-28 | Mandrel device is used in hollow shaft processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209078346U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705977A (en) * | 2021-01-28 | 2021-04-27 | 江苏鹏飞集团股份有限公司 | Machining tool for guaranteeing roundness and end face machining quality of large-diameter cylinder |
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
| CN113319345A (en) * | 2021-05-31 | 2021-08-31 | 二重（德阳）重型装备有限公司 | Dovetail groove machining method for large barrel parts |
-
2018
- 2018-11-28 CN CN201821983017.3U patent/CN209078346U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112705977A (en) * | 2021-01-28 | 2021-04-27 | 江苏鹏飞集团股份有限公司 | Machining tool for guaranteeing roundness and end face machining quality of large-diameter cylinder |
| CN113059490A (en) * | 2021-03-09 | 2021-07-02 | 广东今科机床有限公司 | Adjustable shaft core grinding clamp |
| CN113319345A (en) * | 2021-05-31 | 2021-08-31 | 二重（德阳）重型装备有限公司 | Dovetail groove machining method for large barrel parts |
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