CN201220347Y - Axle end centre hole superimposing structure - Google Patents
Axle end centre hole superimposing structure Download PDFInfo
- Publication number
- CN201220347Y CN201220347Y CNU2008200403322U CN200820040332U CN201220347Y CN 201220347 Y CN201220347 Y CN 201220347Y CN U2008200403322 U CNU2008200403322 U CN U2008200403322U CN 200820040332 U CN200820040332 U CN 200820040332U CN 201220347 Y CN201220347 Y CN 201220347Y
- Authority
- CN
- China
- Prior art keywords
- center hole
- cushion
- shaft end
- centre bore
- axle head
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a shaft end center hole superposition structure, which is composed of a shaft end, a bolt and a cushion, wherein a tapered lug boss which is matched with the shaft end center hole is formed on the right end surface of the cushion, and a center hole which has the same nominal size as the shaft tip is formed in the center of the left end surface thereof; the tapered lug boss and the center hole have a coaxial structure; a screwed hole formed in the shaft end center hole is matched with a screw arranged at the top of the taper lug boss at the right end of the cushion; and the cushion is in bolted connection with the shaft end so as to stabilize the position of the cushion. During the process of rough machining, the positioning tip of a machine tool is propped against the center hole part of the left end of the cushion, and the center hole part is adopted as the location datum. During the process of finish machining, the bolt is removed, and then the cushion is screwed off, since the center hole of the shaft end is not worn down and still keeps the original accuracy, the center hole part of the shaft end can be directly adopted as the location datum to carry out the finish machining, therefore, the shaft end center hole superposition structure has the advantages of high positioning accuracy and good processing quality. The structure is particularly suitable for the center hole structure for processing high-precision shafts.
Description
Technical field
The utility model relates to a kind of axle head centre bore, and particularly the rotor axle head is provided with the centre bore of overlaying structure.
Background technology
Rotor axis of electric is a kind of high-precision axial workpiece, and prior art serves as that the location benchmark carries out machined and check with axle two ends centre bore.Because the centre bore of rotor axle head is with respect to the top rotation in location during machined, centre bore must cause certain wearing and tearing and reduce the machined precision, particularly the armature spindle of heavy-duty motor is heavier because of own wt, centre bore is subject to gravity and the cutting force influence produces uneven wear, the centre bore of distortion influences subsequent fine processing and product inspection quality.Although can suitably improve the positioning accuracy of centre bore to the grinding of centre bore reparation property, can not recover due positioning accuracy.
The utility model content
The utility model is primarily aimed at the deficiencies in the prior art, proposes a kind of axle head centre bore overlaying structure, and this structure is by setting up the process pad, is not worn when the roughing with protection axle head centre bore.
The utility model is achieved through the following technical solutions technical goal.
Axle head centre bore overlaying structure, it is made of axle head, bolt and pad, its improvements are: described pad right side is provided with the tapering boss that matches with the axle head centre bore, the center, left side is provided with the centre bore with the identical nominal dimension of axle head, and pad connects into demountable structure with axle head by bolt.
Pad in the said structure is the process pad, and the centre bore of its left side is coaxial with the tapering boss of right side, pad divided by tapering boss and axle head centre bore match locate outside, also be provided with screw connection structure and determine cooperation position.Pad is made of the good steel of wearability, and after heat treatment has very strong anti-wear performance, and the roughing stage is made the centering benchmark with the centre bore of pad, and fine finishining stage and testing stage are benchmark with the axle head centre bore then.
The utility model compared with prior art has following good effect:
1, to set up mat structure simple, easy to manufacture for axle head;
2, pad and axle head stack and coaxial can satisfy the roughing location, also are beneficial to subsequent fine processing;
3, lay down pad, the axle head centre bore is intact, makes fine finishining and check benchmark, precision height with the axle head centre bore.
Description of drawings
Accompanying drawing is the utility model structural representation.
The specific embodiment
Embodiment shown in reference to the accompanying drawings further specifies the utility model below.
Axle head centre bore overlaying structure shown in the drawings, it is by axle head 1, bolt 2 and fill up 3 and constitute.Described pad 3 right sides are provided with the tapering boss that matches with axle head 1 centre bore, and the center, left side is provided with the centre bore with axle head 1 identical nominal dimension, and both are coaxial configuration.Establishing screwed hole in the centre bore of described axle head 1 matches with the screw rod that pad 3 right-hand member tapering boss push up.Described pad 3 also is connected by bolt 2 with axle head 1.Present embodiment is the 200KW rotor axis of electric, and its axle head 1 diameter is φ 150mm, is provided with φ 25mm centre bore, and the screw in the centre bore is M12mm.To fill up the 3 tapering boss with the right side during roughing and match with the centre bore of axle head 1, and be integral by being threaded of top, and also be connected by bolt 2 between pad 3 and the axle head 1, with stable 3 the position of filling up, lathe is located top directly withstanding on and is filled up 3 central hole.During fine finishining, first demounting bolt 2 screws off pad 3 again, because the centre bore end of axle head is worn, still keeps original precision, and directly the centre bore with axle head 1 is that benchmark carries out fine finishining, the positioning accuracy height, and crudy is good.
Claims (3)
1, a kind of axle head centre bore overlaying structure, it is made of axle head (1), bolt (2) and pad (3), it is characterized in that: described pad (3) right side is provided with the tapering boss that matches with axle head (1) centre bore, the center, left side is provided with the centre bore with the identical nominal dimension of axle head (1), and pad (3) connects into demountable structure with axle head (1) by bolt (2).
2, axle head centre bore overlaying structure according to claim 1 is characterized in that: the centre bore of described pad (3) left side is coaxial with the tapering boss of right side.
3, axle head centre bore overlaying structure according to claim 1 is characterized in that: the threaded shank of establishing screw and pad (3) right-hand member tapering boss top in described axle head (1) centre bore matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200403322U CN201220347Y (en) | 2008-07-14 | 2008-07-14 | Axle end centre hole superimposing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200403322U CN201220347Y (en) | 2008-07-14 | 2008-07-14 | Axle end centre hole superimposing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201220347Y true CN201220347Y (en) | 2009-04-15 |
Family
ID=40573866
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200403322U Expired - Fee Related CN201220347Y (en) | 2008-07-14 | 2008-07-14 | Axle end centre hole superimposing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201220347Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363220A (en) * | 2011-11-21 | 2012-02-29 | 南车成都机车车辆有限公司 | Device for protecting center hole of axle |
| CN102581649A (en) * | 2012-03-30 | 2012-07-18 | 江苏常牵庞巴迪牵引系统有限公司 | Machining fixture for outer circles of rotary shafts of motors |
| CN107186431A (en) * | 2017-06-29 | 2017-09-22 | 上海运城制版有限公司 | A kind of roller of shaft end with centre bore silk tooth repaiies aperture apparatus and method |
-
2008
- 2008-07-14 CN CNU2008200403322U patent/CN201220347Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102363220A (en) * | 2011-11-21 | 2012-02-29 | 南车成都机车车辆有限公司 | Device for protecting center hole of axle |
| CN102581649A (en) * | 2012-03-30 | 2012-07-18 | 江苏常牵庞巴迪牵引系统有限公司 | Machining fixture for outer circles of rotary shafts of motors |
| CN107186431A (en) * | 2017-06-29 | 2017-09-22 | 上海运城制版有限公司 | A kind of roller of shaft end with centre bore silk tooth repaiies aperture apparatus and method |
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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: 20090415 Termination date: 20110714 |