CN204413704U - A kind of spindle floating is forged a knife structure - Google Patents
A kind of spindle floating is forged a knife structure Download PDFInfo
- Publication number
- CN204413704U CN204413704U CN201420783811.9U CN201420783811U CN204413704U CN 204413704 U CN204413704 U CN 204413704U CN 201420783811 U CN201420783811 U CN 201420783811U CN 204413704 U CN204413704 U CN 204413704U
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- cylinder body
- end cap
- supporting seat
- main shaft
- piston
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of spindle floating to forge a knife structure, its knife machining mechanism comprises cylinder body, piston and cylinder body end cap, the baffle ring stretched in the inwall of supporting seat is wholely set, baffle ring is arranged on the front of cylinder body, cylinder body end cap is coaxially fixed on the rear end of cylinder body, the rear end of piston is through cylinder body end cap, the front end of piston is through cylinder body, the integral middle of piston is provided with the first radial convex loop, the outside of the first radial convex loop and the inwall of cylinder body fit, first radial convex loop will be divided into the first seal chamber and the second seal chamber before and after the inner chamber of cylinder body, cylinder body is arranged and is connected with spindle locking mechanism, when cylinder body slides backward certain distance in supporting seat, spindle locking mechanism locking main shaft, pulling force is backward imposed to main shaft.The utility model, while the floating function of forging a knife of realization, can be eliminated the trend that main shaft moves downward, improve the stressing conditions of main shaft bearing, improve its service life.
Description
Technical field
The utility model relates to the structure of forging a knife of main shaft in high-speed cutting manufacture field, and specifically a kind of spindle floating is forged a knife structure.
Background technology
The rotary speed of main shaft is higher, and especially the rotating speed of electro spindle generally can reach 20000 revolutions per seconds, and therefore its bearing is more prone to high speed, and in bearing load ability relative deficiency.Oil cylinder of forging a knife pushes away the broaching tool bar of main shaft inside forward in hydraulic oil injection situation; Have disk spring to exist between broaching tool bar and main shaft, when broaching tool bar is toward protracting, when main shaft is motionless, disk spring is compressed, and produces spring force; The trend that this spring force will make main shaft have to move forward, but main shaft is maintained static by main shaft bearing, this spring force is finally applied on main shaft bearing, therefore oil cylinder of forging a knife in main shaft exchanging knives process will affect the service condition of main shaft bearing to the active force of main shaft, and this active force is much larger than the cutting force of main shaft, damage can be caused to bearing, affect bearing service life.
Summary of the invention
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, provides a kind of spindle floating improving shaft strength situation to forge a knife structure.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of spindle floating is forged a knife structure, comprise knife machining mechanism, described knife machining mechanism is arranged in the supporting seat of the tubular of a both ends open, main axle unit rear end is fixed in the rear end of described supporting seat, the rear end of main shaft and broaching tool bar is stretched in described supporting seat, between described main shaft and described broaching tool bar, butterfly spring is installed, the front end of described supporting seat is provided with supporting seat end cap, described knife machining mechanism comprises cylinder body, piston and cylinder body end cap, described cylinder body can slide in described supporting seat, the baffle ring stretched in the inwall of described supporting seat is wholely set, described baffle ring is arranged on the front of described cylinder body, described cylinder body end cap is coaxially fixed on the rear end of described cylinder body, the rear end of described piston is through described cylinder body end cap, the front end of described piston is through described cylinder body, described piston can in described cylinder body slide anteroposterior, the integral middle of described piston is provided with the first radial convex loop, the outside of the first described radial convex loop and the inwall of described cylinder body fit, the first described radial convex loop will be divided into the first seal chamber and the second seal chamber before and after the inner chamber of described cylinder body, the first described seal chamber is connected with the oil return opening be arranged on described cylinder body sidewall, the second described seal chamber is connected with the oil-in be arranged on described cylinder body sidewall, described cylinder body is arranged and is connected with spindle locking mechanism, when cylinder body slides backward certain distance in supporting seat, spindle locking mechanism locking main shaft, pulling force is backward imposed to main shaft.
In the course of work, hydraulic oil is when oil-in enters the second seal chamber, and piston and cylinder body end cap are all subject to the active force of oil pressure, simultaneously piston advances forward promote broaching tool bar and move forward, thus realize the releasing orientation of pulling claw, meanwhile, main shaft is also subject to a thrust forward, and while piston advances forward, cylinder body end cap can move backward, cylinder body is driven to slide backward together with spindle locking mechanism, until spindle locking mechanism locking main shaft impose pulling force backward to main shaft, this pulling force backward suffered by main shaft is contrary with the thrust direction forward suffered by it, and by design in advance, above-mentioned pulling force can be made close with thrust size, almost offset therefore, it is possible to realize this both direction opposite effect power acted on main shaft, to the trend moved downward be there is not in the main shaft like this as hard parts, the impact of this active force correspondingly also can not be subject to for the main shaft bearing of fixed main shaft, thus while the floating function of forging a knife of realization, the stressing conditions of main shaft bearing can be improved, improve its service life.Contrary with said process, by oil return opening in the first seal chamber during oiling, the active force of oil pressure will make piston move backward and cylinder body travelled forward and resets, and baffle ring, for limiting the proal displacement of cylinder body, is avoided because cylinder body travels forward excessively and damages broaching tool bar.
Described spindle locking mechanism comprises left-hand thread pawl, left-hand thread ring and some back-moving springs, described left-hand thread pawl is arranged on the front end of described cylinder body, described left-hand thread pawl is spacing by described baffle ring, the second radial convex loop stretched in described left-hand thread pawl is wholely set, described left-hand thread ring is fastened on the rear end of described main shaft, described left-hand thread ring is wholely set the 3rd overhanging radial convex loop, the second described radial convex loop is positioned at directly over the 3rd described radial convex loop, between the second described radial convex loop and the 3rd described radial convex loop, there is the first gap, described some back-moving springs are arranged between described supporting seat end cap and described cylinder body end cap, described some back-moving springs are in compressive state, between described supporting seat end cap and described cylinder body end cap, there is the second gap, when described left-hand thread pawl abuts on described baffle ring, the second described gap is greater than the first described gap.After adopting the spindle locking mechanism of said structure, continuous oiling in the second seal chamber, when the active force of the oil pressure in the second seal chamber exceedes the pretightning force of back-moving spring, cylinder body end cap just starts to move backward, and drive left-hand thread pawl to move backward with cylinder body together, and left-hand thread ring maintains static, therefore the first gap will reduce gradually, second gap also can reduce gradually simultaneously, because the initial size in the second gap is larger than the initial size in the first gap, therefore left-hand thread ring first contacts with left-hand thread pawl; After left-hand thread ring contacts with left-hand thread pawl, oil pressure in second seal chamber exists always, therefore the 3rd radial convex loop on left-hand thread ring will pull back the second radial convex loop on left-hand thread pawl, and left-hand thread ring and main shaft are fastenedly connected, therefore main shaft will be subject to a pulling force backward, and this pulling force and above-mentioned thrust all act on main shaft, and size is close, direction is contrary, after two active forces are offset, main shaft no longer has the trend moved downward.
Above-mentioned structure of forging a knife also comprises guiding mechanism, described guiding mechanism comprises some guide posts, first wear ring and the second wear ring, guide post described in every root is fixed on described supporting seat end cap by the first locking nut, guide post described in every root reaches in described cylinder body end cap through described supporting seat end cap, guide post described in every root is arranged with the back-moving spring described in, the first described wear ring is arranged on the contact site of the rear end of described cylinder body end cap and described piston, the second described wear ring is arranged on the contact position of the front end of described cylinder body and described piston.Guiding mechanism plays guiding and supporting role to cylinder body along sliding up and down of supporting seat, improves the reliability of mechanism action.
The sidewall of described supporting seat is provided with the position detecting mechanism of the location status for detecting described broaching tool bar, to improve the controllability of the process of forging a knife.
Described position detecting mechanism comprises some position detection unit, each described position detection unit comprises position sensor, extension rod and adjustment block, described adjustment block is provided with U-shaped hole, described adjustment block is fixed on the sidewall of described supporting seat through described U-shaped hole by described some second locking nuts, one end of described extension rod is arranged in described adjustment block, the other end is provided with the position sensor described in, and described broaching tool bar is provided with the induction bulge loop corresponding to described position sensor position.The position of up-down adjustment adjustment block is convenient in the design in U-shaped hole, selects corresponding second locking nut locking adjustment block, make position sensor be adjusted to optimum position, ensure the accuracy of testing result according to the position of adjustment block.
The quantity of described position detection unit is three.By the unlike signal of the position sensor in three position detection unit, the location status of broaching tool bar can be detected, thus accurate judgement is made to the state of main spindle broach.
Described supporting seat end cap is provided with the reseting sensor of the size for detecting the second described gap.The design of reseting sensor can further improve the controllability of the process of forging a knife, and is conducive to raising and forges a knife precision.
The first seal is provided with between described cylinder body end cap and the rear end of described piston, the second seal is provided with between the front end of described cylinder body and described piston, be provided with the 3rd seal between described cylinder body and the first described radial convex loop, between described cylinder body end cap and described cylinder body, be provided with sealing ring.First seal, the second seal, the 3rd seal and sealing ring can improve the sealing of structure of forging a knife, and prevent hydraulic fluid leak.
Compared with prior art, the utility model has the advantage of: spindle floating disclosed in the utility model is forged a knife in arrangement works process, hydraulic oil is when oil-in enters the second seal chamber, piston and cylinder body end cap are all subject to the active force of oil pressure, simultaneously piston advances forward promote broaching tool bar and move forward, thus realize the releasing orientation of pulling claw, meanwhile, main shaft is also subject to a thrust forward, and while piston advances forward, cylinder body end cap can move backward, cylinder body is driven to slide backward together with spindle locking mechanism, until spindle locking mechanism locking main shaft impose pulling force backward to main shaft, this pulling force backward suffered by main shaft is contrary with the thrust direction forward suffered by it, and by design in advance, above-mentioned pulling force can be made close with thrust size, almost offset therefore, it is possible to realize this both direction opposite effect power acted on main shaft, to the trend moved downward be there is not in the main shaft like this as hard parts, the impact of this active force correspondingly also can not be subject to for the main shaft bearing of fixed main shaft, thus while the floating function of forging a knife of realization, the trend that main shaft moves downward can be eliminated, improve the stressing conditions of main shaft bearing, improve its service life.
Accompanying drawing explanation
Fig. 1 is that embodiment main shaft is forged a knife the structural representation of oil cylinder.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.
Spindle floating is as shown in the figure forged a knife structure, comprise knife machining mechanism, guiding mechanism and position detecting mechanism, knife machining mechanism is arranged in the supporting seat 1 of the tubular of a both ends open, main axle unit rear end is fixed in the rear end of supporting seat 1, the rear end of main shaft 61 and broaching tool bar 62 is stretched in supporting seat 1, butterfly spring (not shown) is installed between main shaft 61 and broaching tool bar 62, the front end of supporting seat 1 is provided with supporting seat end cap 11, knife machining mechanism comprises cylinder body 21, piston 22 and cylinder body end cap 23, cylinder body 21 can slide in supporting seat 1, the baffle ring 12 stretched in the inwall of supporting seat 1 is wholely set, baffle ring 12 is arranged on the front of cylinder body 21, cylinder body end cap 23 is coaxially fixed on the rear end of cylinder body 21, sealing ring 231 is provided with between cylinder body end cap 23 and cylinder body 21, the rear end of piston 22 is through cylinder body end cap 23, 22 front ends of piston are through cylinder body 21, piston 22 can in cylinder body 21 slide anteroposterior, the first seal 232 is provided with between the rear end of cylinder body end cap 23 and piston 22, the second seal 211 is provided with between the front end of cylinder body 21 and piston 22, the integral middle of piston 22 is provided with the first radial convex loop 221, the outside of the first radial convex loop 221 and the inwall of cylinder body 21 fit, the 3rd seal 212 is provided with between cylinder body 21 and the first radial convex loop 221, first radial convex loop 221 will be divided into the first seal chamber 24 and the second seal chamber 25 before and after the inner chamber of cylinder body 21, first seal chamber 24 is connected with the oil return opening 241 be arranged on cylinder body 21 sidewall, second seal chamber 25 is connected with the oil-in 251 be arranged on cylinder body 21 sidewall, cylinder body 21 is arranged and is connected with spindle locking mechanism, when cylinder body 21 slides backward certain distance in supporting seat 1, spindle locking mechanism locking main shaft 61, pulling force is backward imposed to main shaft 61.
Spindle locking mechanism comprises left-hand thread pawl 31, left-hand thread ring 32 and some back-moving springs 33, left-hand thread pawl 31 is arranged on the front end of cylinder body 21, left-hand thread pawl 31 is spacing by baffle ring 12, the second radial convex loop 311 stretched in left-hand thread pawl 31 is wholely set, left-hand thread ring 32 is fastened on the rear end of main shaft 61, left-hand thread ring 32 is wholely set the 3rd overhanging radial convex loop 321, second radial convex loop 311 is positioned at directly over the 3rd radial convex loop 321, there is between second radial convex loop 311 and the 3rd radial convex loop 321 first gap 34, some back-moving springs 33 are arranged between supporting seat end cap 11 and cylinder body end cap 23, some back-moving springs 33 are in compressive state, there is between supporting seat end cap 11 and cylinder body end cap 23 second gap 26, when left-hand thread pawl 31 abuts on baffle ring 12, second gap 26 is greater than the first gap 34, supporting seat end cap 11 is provided with the reseting sensor 13 of the size for detecting the second gap 26.
Guiding mechanism comprises some guide post 43, first wear rings 41 and the second wear ring 42, every root guide post 43 is fixed on supporting seat end cap 11 by the first locking nut 44, every root guide post 43 reaches in cylinder body end cap 23 through supporting seat end cap 11, every root guide post 43 is arranged with a back-moving spring 33, first wear ring 41 is arranged on the contact site of the rear end of cylinder body end cap 23 and piston 22, and the second wear ring 42 is arranged on the contact position of the front end of cylinder body 21 and piston 22.
Position detecting mechanism is for detecting the location status of broaching tool bar 62, position detecting mechanism comprises some position detection unit, each position detection unit comprises position sensor 55, extension rod 54 and adjustment block 51, adjustment block 51 is provided with U-shaped hole 53, adjustment block 51 is fixed on the sidewall of supporting seat 1 through U-shaped hole 53 by some second locking nuts 52, one end of extension rod 54 is arranged in adjustment block 51, the other end is provided with a position sensor 55, broaching tool bar 62 is provided with the induction bulge loop 621 corresponding to position sensor 55 position.
In the course of work, continuous oiling in the second seal chamber 25, piston 22 and cylinder body end cap 23 are all subject to the active force of oil pressure, piston 22 travels forward and promotes broaching tool bar 62 and moves forward, thus realize the releasing orientation of pulling claw (not shown), meanwhile, main shaft 61 is also subject to a thrust forward, when the active force of the oil pressure in the second seal chamber 25 exceedes the pretightning force of back-moving spring 33, cylinder body end cap 23 just starts to move backward, and drive left-hand thread pawl 31 to move backward with cylinder body 21 together, and left-hand thread ring 32 maintains static, therefore the first gap 34 will reduce gradually, second gap 26 also can reduce gradually simultaneously, and because the initial size in the second gap 26 is larger than the initial size in the first gap 34, therefore left-hand thread ring 32 first contacts with left-hand thread pawl 31, after left-hand thread ring 32 contacts with left-hand thread pawl 31, oil pressure in second seal chamber 25 exists always, therefore the 3rd radial convex loop 321 on left-hand thread ring 32 will pull back the second radial convex loop 311 on left-hand thread pawl 31, and left-hand thread ring 32 and main shaft 61 are fastenedly connected, therefore main shaft 61 will be subject to a pulling force backward, this pulling force and above-mentioned thrust all act on main shaft 61, size is close, direction is contrary, after two active forces are offset, main shaft 61 no longer has the trend moved downward, the impact of this active force correspondingly also can not be subject to for the main shaft bearing (not shown) of fixed main shaft 61, thus while the floating function of forging a knife of realization, the stressing conditions of main shaft bearing can be improved, improve its service life.Contrary with said process, by oil return opening 241 in the first seal chamber 24 during oiling, the active force of oil pressure will make piston 22 move backward and make cylinder body 21 travel forward and reset, baffle ring 12, for limiting the proal displacement of cylinder body 21, is avoided because cylinder body 21 travels forward excessively and damages broaching tool bar 62.
Claims (8)
1. a spindle floating is forged a knife structure, comprise knife machining mechanism, described knife machining mechanism is arranged in the supporting seat of the tubular of a both ends open, main axle unit rear end is fixed in the rear end of described supporting seat, the rear end of main shaft and broaching tool bar is stretched in described supporting seat, between described main shaft and described broaching tool bar, butterfly spring is installed, the front end of described supporting seat is provided with supporting seat end cap, it is characterized in that described knife machining mechanism comprises cylinder body, piston and cylinder body end cap, described cylinder body can slide in described supporting seat, the baffle ring stretched in the inwall of described supporting seat is wholely set, described baffle ring is arranged on the front of described cylinder body, described cylinder body end cap is coaxially fixed on the rear end of described cylinder body, the rear end of described piston is through described cylinder body end cap, the front end of described piston is through described cylinder body, described piston can in described cylinder body slide anteroposterior, the integral middle of described piston is provided with the first radial convex loop, the outside of the first described radial convex loop and the inwall of described cylinder body fit, the first described radial convex loop will be divided into the first seal chamber and the second seal chamber before and after the inner chamber of described cylinder body, the first described seal chamber is connected with the oil return opening be arranged on described cylinder body sidewall, the second described seal chamber is connected with the oil-in be arranged on described cylinder body sidewall, described cylinder body is arranged and is connected with spindle locking mechanism, when cylinder body slides backward certain distance in supporting seat, spindle locking mechanism locking main shaft, pulling force is backward imposed to main shaft.
2. a kind of spindle floating according to claim 1 is forged a knife structure, it is characterized in that described spindle locking mechanism comprises left-hand thread pawl, left-hand thread ring and some back-moving springs, described left-hand thread pawl is arranged on the front end of described cylinder body, described left-hand thread pawl is spacing by described baffle ring, the second radial convex loop stretched in described left-hand thread pawl is wholely set, described left-hand thread ring is fastened on the rear end of described main shaft, described left-hand thread ring is wholely set the 3rd overhanging radial convex loop, the second described radial convex loop is positioned at directly over the 3rd described radial convex loop, between the second described radial convex loop and the 3rd described radial convex loop, there is the first gap, described some back-moving springs are arranged between described supporting seat end cap and described cylinder body end cap, described some back-moving springs are in compressive state, between described supporting seat end cap and described cylinder body end cap, there is the second gap, when described left-hand thread pawl abuts on described baffle ring, the second described gap is greater than the first described gap.
3. a kind of spindle floating according to claim 2 is forged a knife structure, characterized by further comprising guiding mechanism, described guiding mechanism comprises some guide posts, first wear ring and the second wear ring, guide post described in every root is fixed on described supporting seat end cap by the first locking nut, guide post described in every root reaches in described cylinder body end cap through described supporting seat end cap, guide post described in every root is arranged with the back-moving spring described in, the first described wear ring is arranged on the contact site of the rear end of described cylinder body end cap and described piston, the second described wear ring is arranged on the contact position of the front end of described cylinder body and described piston.
4. a kind of spindle floating according to any one of claim 2-3 is forged a knife structure, the sidewall that it is characterized in that described supporting seat is provided with the position detecting mechanism of the location status for detecting described broaching tool bar.
5. a kind of spindle floating according to claim 4 is forged a knife structure, it is characterized in that described position detecting mechanism comprises some position detection unit, each described position detection unit comprises position sensor, extension rod and adjustment block, described adjustment block is provided with U-shaped hole, described adjustment block is fixed on the sidewall of described supporting seat through described U-shaped hole by described some second locking nuts, one end of described extension rod is arranged in described adjustment block, the other end is provided with the position sensor described in, described broaching tool bar is provided with the induction bulge loop corresponding to described position sensor position.
6. a kind of spindle floating according to claim 5 is forged a knife structure, it is characterized in that the quantity of described position detection unit is three.
7. a kind of spindle floating according to claim 5 is forged a knife structure, it is characterized in that the reseting sensor of the size described supporting seat end cap is provided with for detecting the second described gap.
8. a kind of spindle floating according to claim 1 is forged a knife structure, it is characterized in that being provided with the first seal between described cylinder body end cap and the rear end of described piston, the second seal is provided with between the front end of described cylinder body and described piston, be provided with the 3rd seal between described cylinder body and the first described radial convex loop, between described cylinder body end cap and described cylinder body, be provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783811.9U CN204413704U (en) | 2014-12-11 | 2014-12-11 | A kind of spindle floating is forged a knife structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420783811.9U CN204413704U (en) | 2014-12-11 | 2014-12-11 | A kind of spindle floating is forged a knife structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204413704U true CN204413704U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420783811.9U Withdrawn - After Issue CN204413704U (en) | 2014-12-11 | 2014-12-11 | A kind of spindle floating is forged a knife structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204413704U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493603B (en) * | 2014-12-11 | 2016-09-14 | 宁波海天精工股份有限公司 | A kind of spindle floating is forged a knife structure |
| CN108941624A (en) * | 2018-08-31 | 2018-12-07 | 佛山善能机电科技有限公司 | A kind of floating cylinder device |
| CN111673097A (en) * | 2020-06-23 | 2020-09-18 | 北京东方精益机械设备有限公司 | Milling and turning composite electric spindle assembly and corresponding numerical control machining equipment |
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
-
2014
- 2014-12-11 CN CN201420783811.9U patent/CN204413704U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104493603B (en) * | 2014-12-11 | 2016-09-14 | 宁波海天精工股份有限公司 | A kind of spindle floating is forged a knife structure |
| CN108941624A (en) * | 2018-08-31 | 2018-12-07 | 佛山善能机电科技有限公司 | A kind of floating cylinder device |
| CN108941624B (en) * | 2018-08-31 | 2024-03-26 | 佛山善能机电科技有限公司 | Floating cylinder device |
| CN111673097A (en) * | 2020-06-23 | 2020-09-18 | 北京东方精益机械设备有限公司 | Milling and turning composite electric spindle assembly and corresponding numerical control machining equipment |
| CN114147245A (en) * | 2021-11-22 | 2022-03-08 | 深圳市爱贝科精密工业股份有限公司 | Built-in brake mechanism for lathe spindle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20160914 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |