CN203917966U - A kind of knife bar tailstock with tapered sleeve clamping - Google Patents
A kind of knife bar tailstock with tapered sleeve clamping Download PDFInfo
- Publication number
- CN203917966U CN203917966U CN201420393585.3U CN201420393585U CN203917966U CN 203917966 U CN203917966 U CN 203917966U CN 201420393585 U CN201420393585 U CN 201420393585U CN 203917966 U CN203917966 U CN 203917966U
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- CN
- China
- Prior art keywords
- tapered sleeve
- knife bar
- tailstock
- bearing
- hole
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- Withdrawn - After Issue
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Abstract
The utility model provides a kind of knife bar tailstock with tapered sleeve clamping, tailstock adopts the two accurate elastic conical drogues of installing in opposite directions and a pair of Biserial cylindrical roller bearing precision-fit with internal taper hole to be clamped in and on knife bar, is assembled into rotary body, after the integral structure tailstock that this type of knife bar runs through is in place, rigidity and precision while having guaranteed knife bar work, the installation and removal of tapered sleeve, tailstock are convenient and swift, be applicable to grow roll, the tail end supporting of milling rotation class cutter.
Description
Technical field
The utility model relates to the knife bar tailstock of the accurate elastic conical drogue clamping of a kind of use, particularly a kind ofly for installing, long rolls, the knife bar tailstock of milling class rotary cutting tool.
Background technology
Rolling, in some stock-removing machines of milling processing, hobboing cutter, milling cutter are installed on knife bar and carry out rotary cutting processing, and the front end of knife bar is connected with machine tool spindle, obtains precision and the rigidity of cutting required power and transmission cutting movement.If cutter is shorter, this of knife bar kind of cantilever beam mode is installed, its kinematic accuracy and rigidity generally can meet processing job requirements, if but cutter is longer, under the effect of resistance to cutting, the kinematic accuracy of knife bar tailstock and rigidity are geometric progression compared with front end and decline, and obviously can not meet the requirement of processing operation.At this moment, just need to add a supporting tailstock at knife bar tail end, make knife bar become simply supported beam mounting means.Cutter is in process, need often take off and carry out sharpening, tailstock must be removed, therefore general tailstock and knife bar are made split-type structural, be that knife bar tail end is connected with taper seat or face of cylinder form with the rotating shaft of knife rest, make it to be easy to separation, although knife bar tail end has been played to certain supporting role to such tailstock and handling are simple, but due to split-type structural, the precision of its connection and rigidity are still not enough.When cutter is longer, larger, the required precision of resistance to cutting is when higher, this split type knife bar tailstock just can not satisfy the demands.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is to overcome deficiency of the prior art, the accurate elastic conical drogue of a kind of use is provided and with internal taper hole precision bearing, coordinates the knife bar tailstock of clamping, make knife bar front end, tail end substantially realize etc. precision, etc. rigidity, meet that cutter is longer, resistance to cutting is larger, required precision rolling when higher, milling processing request.
(2) technical scheme
For solving the problems of the technologies described above, the utility model provides a kind of knife bar tailstock with tapered sleeve clamping, comprise the tailstock body 2 for the supporting of knife bar tail end, and the knife bar 5 of cutter 14 is installed, on described tailstock body 2, offer tailstock body installing hole, wherein, it is clutch shaft bearing 91 and second bearing 92 of taper hole that endoporus is installed in described tailstock body installing hole, and the small-bore end of the taper hole of described clutch shaft bearing 91 and described the second bearing 92 is installed in opposite directions, the two ends of described tailstock body installing hole are fixed with respectively the rear end cap 3 that described clutch shaft bearing 91 is carried out to axial location, and described the second bearing 92 is carried out to the drive end bearing bracket 17 of axial location, in described clutch shaft bearing 91, be arranged with the first tapered sleeve 4, in described the second bearing 92, be arranged with the second tapered sleeve 12, described knife bar 5 is successively through described the second tapered sleeve 12 and described the first tapered sleeve 4, on described knife bar 15, be formed with the shaft shoulder, the end contact of the described shaft shoulder and described the second tapered sleeve 12, the tail end of described knife bar 15 locking nut 6 that has been threaded, the end contact of described locking nut 6 and described the first tapered sleeve 4.
Further, the inner face of described rear end cap 3 offers first step hole, and the diameter in described first step hole is greater than the external diameter of the inner ring of described clutch shaft bearing 91.
Further, the inner face of described drive end bearing bracket 17 offers second step hole 10, and the diameter in described second step hole is greater than the external diameter of the inner ring of described the second bearing 92.
Further, the degree of depth in described first step hole and/or described second step hole is more than or equal to 0.5mm and is less than or equal to 1mm.
Further, the end of described the first tapered sleeve 4 extends radially outwardly and forms stopper section 18, the end contact of described locking nut 6 and described stopper section 18.
Further, on described knife bar 5, threaded engagement has end face seal nut 11, between described end face seal nut 11 and the contact-making surface of described drive end bearing bracket 17, is provided with sealing ring 16.
Further, the end face of described drive end bearing bracket 17 offers annular groove, and described sealing ring 16 is arranged in described annular groove.
Further, described the first tapered sleeve sidewall is provided with the first hole 20-1, described the first hole is connected to the smaller diameter end end face of described the first tapered sleeve by the first groove 19-1, or by the second groove 19-2, being connected to the larger diameter end end face of described the first tapered sleeve, described the first groove and described the second groove are circumferentially arranged alternately the jacket wall at described the first tapered sleeve.
Further, described the second tapered sleeve sidewall is provided with the second hole 20-2, described the second hole is connected to the smaller diameter end end face of described the second tapered sleeve by three-flute 19-3, or by the 4th groove 19-4, being connected to the larger diameter end end face of described the second tapered sleeve, described three-flute and described the 4th groove are circumferentially arranged alternately the jacket wall at described the second tapered sleeve.
Further, described clutch shaft bearing and described the second bearing are Biserial cylindrical roller bearing.
(3) beneficial effect
The knife bar tailstock of tapered sleeve clamping for the utility model, adopts integral structure, and knife bar and bearing inner race adopt accurate elastic conical drogue to realize gapless clamping, and the precision of knife bar and rigidity all promote greatly; Tailstock bearing adopts the biserial cylinder precise roller bearing with internal taper hole, has high rigidity, high accuracy, high-revolving advantage, regulates the pretightning force of tapered sleeve to regulate bearing clearance by trace, reaches better service precision and life-span.Tailstock bearing is free end structure, the requirement of expanding with heat and contract with cold while meeting knife bar work completely.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of the knife bar tailstock of tapered sleeve clamping for the utility model;
Fig. 2 is the front view of the first tapered sleeve of the knife bar tailstock of tapered sleeve clamping for the utility model;
Fig. 3 is the left schematic diagram of the first tapered sleeve of the knife bar tailstock of tapered sleeve clamping for the utility model;
Fig. 4 is the front view of the second tapered sleeve of the knife bar tailstock of tapered sleeve clamping for the utility model;
Fig. 5 is the left view of the second tapered sleeve of the knife bar tailstock of tapered sleeve clamping for the utility model.
The specific embodiment
Consult Fig. 1～Fig. 5, the utility model provides a kind of knife bar tailstock with tapered sleeve clamping, comprise the tailstock body 2 for the supporting of knife bar tail end, and the knife bar 5 of cutter 14 is installed, on tailstock body 2, offer tailstock body installing hole, wherein, it is clutch shaft bearing 91 and second bearing 92 of taper hole that endoporus is installed in tailstock body installing hole, and the small-bore end of the taper hole of this clutch shaft bearing 91 and the second bearing 92 is installed in opposite directions, at the two ends of tailstock body installing hole, be fixed with respectively the rear end cap 3 that clutch shaft bearing 91 is carried out to axial location, and the second bearing 92 is carried out to the drive end bearing bracket 17 of axial location, in clutch shaft bearing 91, be arranged with the first tapered sleeve 4, in the second bearing 92, be arranged with the second tapered sleeve 12, (between the opposite face of the first tapered sleeve and the second tapered sleeve, having gap), knife bar 5 is successively through the second tapered sleeve 12 and the first tapered sleeve 4, on knife bar 15, be formed with the shaft shoulder, the end contact of this shaft shoulder and the second tapered sleeve 12, at the tail end of knife bar 15 locking nut 6 that has been threaded, the end contact of this locking nut 6 and the first tapered sleeve 4, for bearing inner race is moved axially within the specific limits, to meet the effect of expanding with heat and contract with cold of knife bar, inner face at rear end cap 3 offers first step hole, the diameter in this first step hole is greater than the external diameter of the inner ring of clutch shaft bearing 91, inner face at drive end bearing bracket 17 offers second step hole 10 simultaneously, and the diameter in this second step hole is greater than the external diameter of the inner ring of the second bearing 92, the degree of depth in preferred first step hole and/or second step hole is more than or equal to 0.5mm and is less than or equal to 1mm, for the ease of installing and location, in the present embodiment, the end of the first tapered sleeve 4 extends radially outwardly and forms stopper section 18, the end contact of locking nut 6 and stopper section 18, in order to improve assembly precision, between locking nut 6 and stopper section 18, be provided with packing ring 7, in order to improve sealing property, avoid dust, steam etc. to enter, on knife bar 5, threaded engagement has end face seal nut 11, is provided with sealing ring 16 between this end face seal nut 11 and the contact-making surface of drive end bearing bracket 17, in the present embodiment, at the end face of drive end bearing bracket 17, offer annular groove, sealing ring 16 is arranged in this annular groove, in order to make axle sleeve homogeneous deformation, at the first tapered sleeve sidewall, be provided with the first hole 20-1, this first hole is connected to the smaller diameter end end face of the first tapered sleeve by the first groove 19-1, or by the second groove 19-2, be connected to the larger diameter end end face of the first tapered sleeve, and the first groove and the second groove are circumferentially arranged alternately the jacket wall at the first tapered sleeve, in like manner, at the second tapered sleeve sidewall, be provided with the second hole 20-2, this second hole is connected to the smaller diameter end end face of the second tapered sleeve by three-flute 19-3, or by the 4th groove 19-4, be connected to the larger diameter end end face of the second tapered sleeve, and this three-flute and the 4th groove are circumferentially arranged alternately the jacket wall at the second tapered sleeve, in order to improve running accuracy and rigidity, the clutch shaft bearing in the present embodiment and the second bearing all adopt Biserial cylindrical roller bearing.
Below the utility model is elaborated by the installation steps of the knife bar tailstock of tapered sleeve clamping;
First, the small-bore end of a pair of Biserial cylindrical roller bearing internal taper hole is arranged in opposite directions in the tailstock body installing hole of tailstock body 2, with drive end bearing bracket and rear end cap, by screw 8, the outer ring axial limiting of bearing is fixed again, inner face at drive end bearing bracket and rear end cap is processed with respectively the stepped hole that the degree of depth is 0.5mm to 1mm, to allow bearing inner race to move axially within the scope of this.Annular groove at drive end bearing bracket has been embedded in sealing ring 16, and now, tailstock body has been assembled.During work, first cutter 14 is installed on knife bar 5, with accurate lock-nut 15, pass through seal washer 13 by cutter locking, end face seal nut 11 is screwed on knife bar screw thread, at knife bar front end, being inserted in inwall is that face of cylinder outer wall is the second tapered sleeve 12 of taper seat, axial limiting is on the knife bar shaft shoulder, on the second tapered sleeve, be processed with the staggered hole of decile and groove, then by pushing away forward for tailstock body is inserted in knife bar of assembling, at this moment, the internal conical surface of front end the second bearing inner race contacts with the outer conical surface of the second tapered sleeve and promotes and moves in the female parts stepped hole being somebody's turn to do rear end after clutch shaft bearing inner ring, on knife bar, be inserted in again the first tapered sleeve 4 and packing ring 7 with stopper section, on the first tapered sleeve, be also processed with the staggered hole of decile and groove, the first tapered sleeve 4 promotes the second bearing inner race and moves axially forward, the precision-fit of dependence brearing bore and tapered sleeve size clamps completely bearing inner race is mediated, and before and after forming 0.5mm to 1mm move axially distance, the effect of expanding with heat and contract with cold when adapting to knife bar work.The gap of adjusting end face seal nut and sealing ring, forms rational end face seal, last, and tailstock is fixed on the matrix 1 with main spindle box one, relies on to process installation accuracy and makes tailstock body endoporus and main shaft coaxial, and both ends of the surface are vertical with main-shaft axis.When needs sharpening or replacing cutter, first screw off locking nut 6, take off packing ring 7, with specific purpose tool, the first tapered sleeve with stopper section is exited, tailstock body and installation matrix are departed from after fixed relationship, strike in right amount coda pedestal, the second bearing inner race and the second tapered sleeve are departed from, take off tailstock body, and by the inverse number order of mounting cutter, cutter is taken off.
The knife bar tailstock of tapered sleeve clamping for the utility model, adopts integral structure, and knife bar and bearing inner race adopt accurate elastic conical drogue to realize gapless clamping, and the precision of knife bar and rigidity all promote greatly; Tailstock bearing adopts the biserial cylinder precise roller bearing with internal taper hole, has high rigidity, high accuracy, high-revolving advantage, regulates the pretightning force of tapered sleeve to regulate bearing clearance by trace, reaches better service precision and life-span.Tailstock bearing is free end structure, the requirement of expanding with heat and contract with cold while meeting knife bar work completely.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. the knife bar tailstock with tapered sleeve clamping, comprise the tailstock body (2) for the supporting of knife bar tail end, and the knife bar (5) of cutter (14) is installed, described tailstock body offers tailstock body installing hole on (2), it is characterized in that: the clutch shaft bearing that endoporus is taper hole (91) and the second bearing (92) are installed in described tailstock body installing hole, and the small-bore end of the taper hole of described clutch shaft bearing (91) and described the second bearing (92) is installed in opposite directions, the two ends of described tailstock body installing hole are fixed with respectively the rear end cap (3) that described clutch shaft bearing (91) is carried out to axial location, and described the second bearing (92) is carried out to the drive end bearing bracket (17) of axial location, in described clutch shaft bearing (91), be arranged with the first tapered sleeve (4), in described the second bearing (92), be arranged with the second tapered sleeve (12), described knife bar (5) is successively through described the second tapered sleeve (12) and described the first tapered sleeve (4), described knife bar is formed with the shaft shoulder on (15), the end contact of the described shaft shoulder and described the second tapered sleeve (12), the tail end of described knife bar (15) locking nut (6) that has been threaded, the end contact of described locking nut (6) and described the first tapered sleeve (4).
2. the knife bar tailstock with tapered sleeve clamping as claimed in claim 1, is characterized in that: the inner face of described rear end cap (3) offers first step hole, and the diameter in described first step hole is greater than the external diameter of the inner ring of described clutch shaft bearing (91).
3. the knife bar tailstock with tapered sleeve clamping as claimed in claim 2, it is characterized in that: the inner face of described drive end bearing bracket (17) offers second step hole (10), the diameter in described second step hole is greater than the external diameter of the inner ring of described the second bearing (92).
4. the knife bar tailstock with tapered sleeve clamping as claimed in claim 3, is characterized in that: the degree of depth in described first step hole and/or described second step hole is more than or equal to 0.5mm and is less than or equal to 1mm.
5. the knife bar tailstock with tapered sleeve clamping as claimed in claim 1, it is characterized in that: the end of described the first tapered sleeve (4) extends radially outwardly and forms stopper section (18), the end contact of described locking nut (6) and described stopper section (18).
6. the knife bar tailstock with tapered sleeve clamping as claimed in claim 1, it is characterized in that: the upper threaded engagement of described knife bar (5) has end face seal nut (11), between described end face seal nut (11) and the contact-making surface of described drive end bearing bracket (17), is provided with sealing ring (16).
7. the knife bar tailstock with tapered sleeve clamping as claimed in claim 6, is characterized in that: the end face of described drive end bearing bracket (17) offers annular groove, and described sealing ring (16) is arranged in described annular groove.
8. the knife bar tailstock with tapered sleeve clamping as claimed in claim 1, it is characterized in that: described the first tapered sleeve sidewall is provided with the first hole (20-1), described the first hole is connected to the smaller diameter end end face of described the first tapered sleeve by the first groove (19-1), or by the second groove (19-2), being connected to the larger diameter end end face of described the first tapered sleeve, described the first groove and described the second groove are circumferentially arranged alternately the jacket wall at described the first tapered sleeve.
9. the knife bar tailstock with tapered sleeve clamping as claimed in claim 1, it is characterized in that: described the second tapered sleeve sidewall is provided with the second hole (20-2), described the second hole is connected to the smaller diameter end end face of described the second tapered sleeve by three-flute (19-3), or by the 4th groove (19-4), being connected to the larger diameter end end face of described the second tapered sleeve, described three-flute and described the 4th groove are circumferentially arranged alternately the jacket wall at described the second tapered sleeve.
10. the knife bar tailstock with tapered sleeve clamping as described in claim 1 to 9 any one, is characterized in that: described clutch shaft bearing and described the second bearing are Biserial cylindrical roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393585.3U CN203917966U (en) | 2014-07-16 | 2014-07-16 | A kind of knife bar tailstock with tapered sleeve clamping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393585.3U CN203917966U (en) | 2014-07-16 | 2014-07-16 | A kind of knife bar tailstock with tapered sleeve clamping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203917966U true CN203917966U (en) | 2014-11-05 |
Family
ID=51813847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420393585.3U Withdrawn - After Issue CN203917966U (en) | 2014-07-16 | 2014-07-16 | A kind of knife bar tailstock with tapered sleeve clamping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203917966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117696A (en) * | 2014-07-16 | 2014-10-29 | 宁波夏拓机械装备有限公司 | Cutter bar tailstock for clamping taper sleeves |
-
2014
- 2014-07-16 CN CN201420393585.3U patent/CN203917966U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104117696A (en) * | 2014-07-16 | 2014-10-29 | 宁波夏拓机械装备有限公司 | Cutter bar tailstock for clamping taper sleeves |
| CN104117696B (en) * | 2014-07-16 | 2016-05-18 | 宁波夏拓机械装备有限公司 | A kind of knife bar tailstock with tapered sleeve clamping |
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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 |
Granted publication date: 20141105 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |