CN201439124U - Lathe spindle box device - Google Patents
Lathe spindle box device Download PDFInfo
- Publication number
- CN201439124U CN201439124U CN 200920124282 CN200920124282U CN201439124U CN 201439124 U CN201439124 U CN 201439124U CN 200920124282 CN200920124282 CN 200920124282 CN 200920124282 U CN200920124282 U CN 200920124282U CN 201439124 U CN201439124 U CN 201439124U
- Authority
- CN
- China
- Prior art keywords
- bearing group
- main shaft
- spindle
- shoulder
- inner ring
- 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
Links
Images
Landscapes
- Turning (AREA)
Abstract
The utility model relaters to a lathe spindle box device, belonging to the lathe components field. The existing lathe spindle box has the technical problem that the machining accuracy is affected after a spindle is deformed after being heated. The device comprises a box body, a spindle, a belt pulley and two bearing packs, wherein the spindle is penetrated through a front spindle mounting hole and a rear spindle mounting hole on the box body by the front and the rear bearing packs; the belt pulley is sheathed at the rear end of the spindle; the front bearing pack is formed by combining two parallel bearings and one bearing back to back, and the inner rings and the outer rings are fixed axially; the rear bearing pack is formed by sticking and combining two angular contact ball bearings in sequence back to back in set, the inner rings are axially fixed, and the outer rings are not fixed axially, thereby avoiding that the spindle is bent and deformed due to the increased temperature and keeping the high machining accuracy.
Description
Technical field
The utility model belongs to the machine tool element field, and is especially relevant with a kind of lathe spindle case apparatus.
Background technology
After lathe spindle ran up, bearing caused main shaft temperature to raise because the spin friction temperature can raise, and the main shaft temperature meeting of rising is expanded and produced thermal deformation.Traditional vehicle tool spindle box device main shaft is installed on the spindle mounting hole of main shaft casing by bearing, bearing inner race and main shaft are fixed, bearing outer ring and spindle mounting hole hole wall are fixed, main shaft temperature will extend after raising and expanding, though elongation is very little, but also can cause main shaft to produce the axial and circular runout of slight curves deformation effect main shaft, thereby cause the machining accuracy of lathe to change.
The utility model content
The purpose of this utility model is exactly to solve the technical problem that influences machining accuracy after the main shaft temperature distortion, and a kind of lathe spindle case apparatus that can still can keep high manufacturing accuracy after the main shaft temperature distortion is provided.For this reason, the utility model is by the following technical solutions:
A kind of lathe spindle case apparatus, comprise casing, main shaft and belt pulley, before casing is provided with, the spindle mounting hole that latter two is coaxial, before main shaft is threaded onto this, back spindle mounting hole, belt pulley is set in rear-end of spindle, it is characterized in that: be provided with the fore bearing group between described main shaft and the described forward spindle installing hole hole wall, the fore bearing group adopts the complete combination that closely reclines successively of three angular contact ball bearings, has higher axial and radial rigidity, the front-end of spindle outer round surface is provided with first step by shoulder, the inner ring of fore bearing group is set in main shaft and an end is resisted against first step by shoulder, main shaft outer round surface suit first locking nut carries out axial limiting to three bearing inner races of fore bearing group, described forward spindle installing hole inboard is provided with step by shoulder, the outer ring of fore bearing group is resisted against this step by shoulder, be installed with drive end bearing bracket on the casing in the forward spindle installing hole outside, drive end bearing bracket is pressed against the outer ring of fore bearing group axial limiting is made in the outer ring, and drive end bearing bracket also plays dustproof effect to the fore bearing group; Be provided with the rear bearing group between described main shaft and the described back spindle mounting hole hole wall, the rear bearing group adopts the complete combination that reclines successively of two angular contact ball bearings, the main shaft outer round surface is provided with second step by shoulder, rear bearing group inner ring one side by second step by the shoulder axial limiting, be set with second locking nut on the main shaft in the described belt pulley outside, rear bearing group inner ring opposite side passes through the belt pulley axial limiting by second locking nut, the outer ring of rear bearing group forms interference fits with back spindle mounting hole hole wall, be installed with rear end cap on the casing in the back spindle mounting hole outside, have the gap between rear end cap and the rear bearing group outer ring.After main shaft temperature rising expansion causes the small elongation of main shaft, will produce the trend that moves to two ends, but the axial location of fore bearing group inner ring on main shaft fixed, the outer ring is axially also fixed in the forward spindle installing hole, main shaft can't forward end extend so, the axial restraint of rear bearing group inner ring on main shaft, and the outer ring axially is unfixed in the spindle mounting hole of back, so the elongation of main shaft can discharge backward, main shaft temperature raises can not cause main shaft flexural deformation, thereby can not influence the axial and circular runout of front-end of spindle, can guarantee the machined into precision.
As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature:
Described fore bearing group combining form adopts two bearings arranged side by side and the back-to-back combination of another bearing.
Be provided with the preceding sealing spacer that is set in main shaft between described first locking nut and the fore bearing group inner ring, sealing function is played in the ball rolling chamber of fore bearing group.
Described rear bearing group adopts back-to-back combining form.
Described rear bearing group inner ring and described second step are by being provided with back sealing spacer between the shoulder, back sealing spacer is resisted against described second step and reaches axial limiting by shoulder, rear bearing group inner ring is resisted against back sealing spacer and reaches axial limiting, and back sealing spacer seals to rear bearing group ball rolling chamber.
Be provided with spacer between described belt pulley and the rear bearing group inner ring.
Use the utility model can reach following beneficial effect: by rare formula structure of putting behind first three back two back-to-back layout structure of angular contact ball bearing and the main shaft, can make main shaft have higher axial and radial rigidity, and crooked deformation effect machining accuracy after can avoiding main shaft temperature to raise.
Description of drawings
Fig. 1 is the profile of the utility model master apparent direction.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in detail.
As shown in Figure 1, the utility model comprises casing 15, main shaft 3, belt pulley 10, fore bearing group 1 and rear bearing group 12, before casing 15 is provided with, the spindle mounting hole that latter two is coaxial, before main shaft 3 is threaded onto this, back spindle mounting hole, belt pulley 10 is set in the rear end of main shaft 3, fore bearing group 1 is arranged between main shaft 3 and the forward spindle installing hole hole wall, rear bearing group 12 is arranged between main shaft 3 and the back spindle mounting hole hole wall, fore bearing group 1 adopts the complete combination that closely reclines successively of three angular contact ball bearings, compound mode is the arranged side by side and back-to-back combinations of another bearing of two bearings, rear bearing group 12 adopts two back-to-back complete combinations that recline successively of angular contact ball bearing, main shaft 3 front end outer round surface are provided with first step by shoulder 14, the inner ring of fore bearing group 1 is set in main shaft 3 and an end is resisted against first step by shoulder 14, three bearing inner races of 6 pairs of fore bearing groups 1 of outer round surface suit first locking nut of main shaft 3 carry out axial limiting, be provided with the preceding sealing spacer 5 that is set in main shaft 3 between the inner ring of first locking nut 6 and fore bearing group 1, forward spindle installing hole inboard is provided with step by shoulder 4, the outer ring of fore bearing group 1 is resisted against step by shoulder 4, be installed with drive end bearing bracket 2 on the casing 15 in the forward spindle installing hole outside, drive end bearing bracket 2 is pressed against the outer ring of fore bearing group 1 axial limiting is made in the outer ring, main shaft 3 outer round surface are provided with second step by shoulder 13, the inner ring of rear bearing group 12 and second step are by being provided with back sealing spacer 7 between the shoulder 13, the inner ring of rear bearing group 12 is resisted against back sealing spacer 7, back sealing spacer 7 is resisted against second step and reaches axial limiting by shoulder 13, be provided with spacer 8 between the inner ring of belt pulley 10 and rear bearing group 12, be set with second locking nut 9 on the main shaft 3 in belt pulley 10 outsides by second locking nut, 9 axial limitings, the outer ring of rear bearing group 12 forms interference fits with back spindle mounting hole hole wall, be installed with rear end cap 11 on the casing 15 in the back spindle mounting hole outside, have the gap between the outer ring of rear end cap 11 and rear bearing group 12.
Claims (6)
1. lathe spindle case apparatus, comprise casing (15), main shaft (3) and belt pulley (10), casing (15) is provided with coaxial forward spindle installing hole and back spindle mounting hole, main shaft (3) is threaded onto forward spindle installing hole and back spindle mounting hole, belt pulley (10) is set in main shaft (3) rear end, it is characterized in that: be provided with fore bearing group (1) between described main shaft (3) and the described forward spindle installing hole hole wall, fore bearing group (1) adopts the complete combination that closely reclines successively of three angular contact ball bearings, main shaft (3) front end outer round surface is provided with first step by shoulder (4), the inner ring of fore bearing group (1) is set in main shaft (3) and an end is resisted against first step by shoulder (4), main shaft (3) outer round surface suit first locking nut (6) carries out axial limiting to the inner ring of fore bearing group (1), described forward spindle installing hole inboard is provided with step by shoulder (14), the outer ring of fore bearing group (1) is resisted against step by shoulder (14), be installed with drive end bearing bracket (2) on the casing (15) in the forward spindle installing hole outside, drive end bearing bracket (2) is pressed against the outer ring of fore bearing group (1); Be provided with rear bearing group (12) between described main shaft (3) and the described back spindle mounting hole hole wall, rear bearing group (12) adopts the complete combination that reclines successively of two angular contact ball bearings, main shaft (3) outer round surface is provided with second step by shoulder (13), rear bearing group (12) inner ring one side by second step by the shoulder (13) axial limiting, be set with second locking nut (9) on the main shaft (3) in described belt pulley (10) outside, rear bearing group (12) inner ring opposite side passes through belt pulley (10) axial limiting by second locking nut (9), the outer ring of rear bearing group (12) forms interference fits with back spindle mounting hole hole wall, be installed with rear end cap (11) on the casing (15) in the back spindle mounting hole outside, have the gap between rear end cap (11) and rear bearing group (12) outer ring.
2. a kind of lathe spindle case apparatus according to claim 1 is characterized in that: described fore bearing group (1) combining form adopts two bearings arranged side by side and the back-to-back combination of another bearing.
3. a kind of lathe spindle case apparatus according to claim 2 is characterized in that: be provided with the preceding sealing spacer (5) that is set in main shaft (3) between the inner ring of described first locking nut (6) and fore bearing group (1).
4. a kind of lathe spindle case apparatus according to claim 2 is characterized in that: described rear bearing group (12) adopts back-to-back combining form.
5. a kind of lathe spindle case apparatus according to claim 4, it is characterized in that: described rear bearing group (12) inner ring and described second step are by being provided with back sealing spacer (7) between the shoulder (13), back sealing spacer (7) is resisted against described second step by shoulder (13), and rear bearing group (12) inner ring is resisted against back sealing spacer (7).
6. a kind of lathe spindle case apparatus according to claim 5 is characterized in that: be provided with spacer (8) between described belt pulley (10) and rear bearing group (12) inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920124282 CN201439124U (en) | 2009-07-13 | 2009-07-13 | Lathe spindle box device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920124282 CN201439124U (en) | 2009-07-13 | 2009-07-13 | Lathe spindle box device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439124U true CN201439124U (en) | 2010-04-21 |
Family
ID=42543796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920124282 Expired - Fee Related CN201439124U (en) | 2009-07-13 | 2009-07-13 | Lathe spindle box device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439124U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607847A (en) * | 2012-03-08 | 2012-07-25 | 北京工业大学 | Dynamic stiffness test device of main shaft bearing combination part |
| CN102729080A (en) * | 2012-07-09 | 2012-10-17 | 上海三一精机有限公司 | Workpiece clamping device and roller scraper |
| CN103350237A (en) * | 2013-07-31 | 2013-10-16 | 苏州大学 | Oil-gas lubrication pipeline in main shaft structure |
| CN107381220A (en) * | 2017-09-14 | 2017-11-24 | 厦门宏发工业机器人有限公司 | A kind of coil winding machine mainshaft mechanism |
| CN108672725A (en) * | 2018-08-03 | 2018-10-19 | 隆昌精机有限公司 | Milling machine spindle |
| CN109366203A (en) * | 2018-11-29 | 2019-02-22 | 济南第机床有限公司 | A kind of high rigidity lathe spindle box device |
-
2009
- 2009-07-13 CN CN 200920124282 patent/CN201439124U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607847A (en) * | 2012-03-08 | 2012-07-25 | 北京工业大学 | Dynamic stiffness test device of main shaft bearing combination part |
| CN102729080A (en) * | 2012-07-09 | 2012-10-17 | 上海三一精机有限公司 | Workpiece clamping device and roller scraper |
| CN102729080B (en) * | 2012-07-09 | 2015-12-09 | 三一集团有限公司上海分公司 | Workpiece clamping device and scrape roller |
| CN103350237A (en) * | 2013-07-31 | 2013-10-16 | 苏州大学 | Oil-gas lubrication pipeline in main shaft structure |
| CN103350237B (en) * | 2013-07-31 | 2016-03-23 | 苏州大学 | A kind of oil-air lubrication pipeline of main axle structure |
| CN107381220A (en) * | 2017-09-14 | 2017-11-24 | 厦门宏发工业机器人有限公司 | A kind of coil winding machine mainshaft mechanism |
| CN107381220B (en) * | 2017-09-14 | 2023-09-15 | 厦门宏发工业机器人有限公司 | Main shaft mechanism of winding machine |
| CN108672725A (en) * | 2018-08-03 | 2018-10-19 | 隆昌精机有限公司 | Milling machine spindle |
| CN109366203A (en) * | 2018-11-29 | 2019-02-22 | 济南第机床有限公司 | A kind of high rigidity lathe spindle box device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201439124U (en) | Lathe spindle box device | |
| CN103302575B (en) | Third generation automotive hub ball bearing outward flange method for grinding | |
| CN202539585U (en) | Mechanism realizing adjustable radial play for lathe spindle | |
| CN204381418U (en) | A kind of new-type air-floatation main shaft | |
| CN102384192B (en) | Clearance self-regulating mechanism in automobile air pressure disc brake | |
| CN202702011U (en) | Vertical double-end face high-precision grinding machine main shaft | |
| CN204747524U (en) | Be applied to high -speed moving mechanism of main shaft | |
| CN201541172U (en) | High speed electric spindle | |
| CN102500996A (en) | Assembling method for three-fulcrum bearing of aircraft engine | |
| CN104942313A (en) | Mechanism for main shaft high-speed operation and assembling method and using method thereof | |
| CN201880924U (en) | Spindle box suitable for numerically controlled lathe to adopt in-built electrical spindle | |
| CN101123376A (en) | A high-speed woodworker power principle axis | |
| CN202074014U (en) | Novel ball screw transmission cooling device | |
| CN103302576B (en) | Third generation automotive hub ball bearing inner flange method for grinding | |
| CN201190770Y (en) | Hollow high speed precision ball screw | |
| CN203917954U (en) | A kind of high-revolving lathe spindle mechanism that realizes | |
| CN203176288U (en) | Support structure for support end of ball screw | |
| CN201320609Y (en) | Case type sliding-bearing motorized spindle assembled in motor | |
| CN201113625Y (en) | Automobile generator back end cover bearing base | |
| CN2915365Y (en) | Grinding head of high precision paralled surface grinding machine | |
| CN204262368U (en) | A kind of machining center electric main shaft structure | |
| CN201774356U (en) | Constant pressure preloading device for main shaft bearings of high-speed built-in motor | |
| CN201950533U (en) | Main shaft system for coreless grinding machine | |
| CN203599970U (en) | Dust cover assembly for rolling ball high-speed motorized spindle | |
| CN203542348U (en) | Axial movement-type dynamic and hydrostatic electric main shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20180713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |