CN203751343U - Sliding sleeve structure of machine tool spindle - Google Patents

Sliding sleeve structure of machine tool spindle Download PDF

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Publication number
CN203751343U
CN203751343U CN201420036953.9U CN201420036953U CN203751343U CN 203751343 U CN203751343 U CN 203751343U CN 201420036953 U CN201420036953 U CN 201420036953U CN 203751343 U CN203751343 U CN 203751343U
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CN
China
Prior art keywords
bearing
sliding sleeve
ring
chute
handle
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.)
Withdrawn - After Issue
Application number
CN201420036953.9U
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Chinese (zh)
Inventor
王建飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Jian Ke Machinery Co Ltd
Original Assignee
Nanjing Jian Ke Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Jian Ke Machinery Co Ltd filed Critical Nanjing Jian Ke Machinery Co Ltd
Priority to CN201420036953.9U priority Critical patent/CN203751343U/en
Application granted granted Critical
Publication of CN203751343U publication Critical patent/CN203751343U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a sliding sleeve structure of a machine tool spindle. The structure comprises a spindle, a sliding sleeve and a cutter handle. The sliding sleeve is sleeved on the spindle and rotates along with the spindle and moves back and forth along the spindle according to a key groove, a circle of sliding groove is formed in the outer side of the sliding groove, two opposite side arms are arranged on the cutter handle, a shaft stem is mounted on each of the two side arms, the shaft stems are opposite and point to the axis of the sliding sleeve, and the opposite ends of the shaft stems stretch into the sliding groove of the sliding sleeve. The structure is capable of preventing abrasion to a bearing effectively and convenient to maintain.

Description

A kind of shift sleeve structure of machine tool chief axis
Technical field
The utility model relates to a kind of shift sleeve structure, especially a kind of shift sleeve structure for machine-tool spindle system.
Background technology
At present in machine-tool spindle system, what great majority adopted is all by the inner ring of bearing is directly installed in the chute on sliding sleeve, by the movement outer ring that handle promotes bearing of forging a knife, then by bearing inner race promotion sliding sleeve.The shift sleeve structure of this machine tool chief axis is simple and practical, be widely used, and still, this structure exists some inevitable hidden danger, because the speed of mainshaft is very high, cause the rotating speed of sliding sleeve also very high, so this is very high to the requirement of bearing, long-term High Rotation Speed will cause bearing life very short, need to often change like this bearing, not only affect machine tooling efficiency, and can affect machining accuracy, in addition, the installation of bearing is also inconvenient, has also brought trouble to machine upkeep.And forge a knife handle in the time promoting, what mainly lean on is the outer ring that promotes bearing, has so just increased the damage of bearing side direction.
Summary of the invention
The technical problems to be solved in the utility model is the shift sleeve structure of a kind of machine tool chief axis of design, can avoid the wearing and tearing of bearing, and can convenient for maintaining.
In order to solve the problems of the technologies described above, the utility model provides a kind of shift sleeve structure of machine tool chief axis, comprise main shaft, sliding sleeve and the handle of forging a knife, described sliding sleeve is enclosed within on main shaft, rotate with main shaft, and slidably reciprocate along main shaft by the keyway on main shaft, the lateral surface of sliding sleeve is provided with a circle chute, the described handle of forging a knife is provided with two relative side arms, it is characterized in that: a footstalk is installed respectively on described two side arms relatively, described footstalk points to the axle center of sliding sleeve, and the opposite end of footstalk extend in the chute of sliding sleeve.
Adopt footstalk directly to stir sliding sleeve, not only avoided use bearing, and only need to change footstalk when repair and replacement, more convenient, simple and practical, cost is lower.
As further improvement of the utility model scheme, bearing is equipped with in the opposite end of footstalk, and bearing is positioned at the chute of sliding sleeve, and the race diameter of bearing is less than the width of chute.Adopt in the opposite end of footstalk bearing is installed, promote the side of chute by the outer ring of bearing, thereby realize the promotion of handle to sliding sleeve of forging a knife, avoided the damage of bearing side direction; The race diameter of bearing is arranged to be less than to the width of chute, after the handle of forging a knife completes the impetus of sliding sleeve, the outer ring of bearing separates certain interval with the side of chute, can not follow sliding sleeve and rotate together, thereby avoid the long-term High Rotation Speed of bearing; In the time of bearing damage, only footstalk need to be separated from the handle of forging a knife is replaceable type bearing, has facilitated the replacing of bearing.
As further improvement of the utility model scheme, the outer ring sleeve of bearing has bearing ring, and the overall diameter of bearing ring is less than the width of chute.Adopt, on the outer ring of bearing, bearing ring be set, the outer ring of having avoided bearing directly with the contacting of the side of the sliding sleeve of high speed rotating, reduced the wearing and tearing of the outer ring of bearing.
As further improvement of the utility model scheme, on footstalk, also cover has a spacer ring, and spacer ring, between the side arm and bearing of the handle of forging a knife, and coordinates with side arm and the bearing clearance of the handle of forging a knife.Adopt spacer ring to fill up the gap between side arm and the bearing of the handle of forging a knife, reduced rocking of course of work medial axis handle, the thickness of spacer ring is set according to the gap of forging a knife between handle and bearing.
As further restriction scheme of the present utility model, bearing is needle bearing.Needle bearing diameter is relatively little, has reduced the width of chute, and the mutual interference between the workpiece of having avoided causing because sliding sleeve is excessive has also ensured rigidity when sliding sleeve fluctuates back and forth.
As further restriction scheme of the present utility model, the monolateral distance of the outer ring of bearing and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm.The distance of the side of the outer ring of bearing and chute is arranged in the scope of 0.5mm to 1mm, the promotion precision of handle to sliding sleeve not only can ensure to forge a knife, and can ensure after the handle of forging a knife completes the impetus of sliding sleeve, the outer ring of bearing not with the contacts side surfaces of sliding sleeve.
As further restriction scheme of the present utility model, when at the sheathed bearing ring in the outer ring of bearing, the distance of the outer ring of bearing ring and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm.The monolateral distance of the side of the lateral surface of bearing ring and chute is arranged in the scope of 0.5mm to 1mm, the promotion precision of handle to sliding sleeve not only can ensure to forge a knife, and can ensure after the handle of forging a knife completes the impetus of sliding sleeve, the lateral surface of bearing ring not with the contacts side surfaces of sliding sleeve.
As further restriction scheme of the present utility model, the distance of the end of footstalk and the bottom surface of chute is more than or equal to 0.5mm and is less than or equal to 1mm.The distance of the bottom surface of the end of footstalk and chute is arranged in the scope of 0.5mm to 1mm, while having avoided sliding over high speed rotating, contact with the end of footstalk, improve the service life of sliding sleeve, while also having avoided sliding sleeve to contact with footstalk end, produced friction, affected spindle operation stationarity.
The beneficial effects of the utility model are: (1) adopts footstalk directly to stir sliding sleeve, not only avoided use bearing, and repair and replacement is more convenient; (2) side that adopts the outer ring of bearing to promote chute, thus realize the promotion of handle to sliding sleeve of forging a knife, avoid the damage of bearing side direction, while also having avoided footstalk to contact with sliding sleeve side, produce sliding friction; (3) race diameter of bearing is arranged to be less than the width of chute, has avoided the long-term High Rotation Speed of bearing and chute wall; (4), in the time of bearing damage, only footstalk need to be separated from the handle of forging a knife is replaceable type bearing, has facilitated the replacing of bearing; (5) adopt, on the outer ring of bearing, bearing ring be set, the outer ring of having avoided bearing directly with the contacting of the side of the sliding sleeve of high speed rotating, reduced the wearing and tearing of the outer ring of bearing; (6) adopt spacer ring to fill up gapped between the side arm of the handle of forging a knife and bearing, reduced rocking of course of work medial axis handle.
Brief description of the drawings
Fig. 1 is existing shift sleeve structure schematic diagram;
Fig. 2 is shift sleeve structure schematic diagram of the present utility model;
Fig. 3 is shift sleeve structure cutaway view of the present utility model;
Fig. 4 is bearing scheme of installation of the present utility model.
Detailed description of the invention
As shown in Figure 1, in existing shift sleeve structure, the inner ring of bearing 8 is arranged on the chute of sliding sleeve 2, again by the Internal and external cycle of two interior outer nut rigid bearings 8, the handle 6 of forging a knife completes the promotion to sliding sleeve 2 by promoting 12 with the cooperation that pushes away circle 13, sliding sleeve 2 clamps claw 1 and unclamps control under the promotion of the handle 6 of forging a knife, the clamping by claw 1 and unclamp and stir push rod 11, then realize the clamping to chuck and unclamp and control by push rod 11.There are some inevitable hidden danger in this structure, because main shaft 10 rotating speeds are very high, cause the rotating speed of sliding sleeve 2 also very high, so this is very high to the requirement of bearing 8, long-term High Rotation Speed will cause 8 life-spans of bearing very short, need to often change like this bearing 8, not only affect the working (machining) efficiency of lathe, and can affect machining accuracy, in addition, the installation of bearing 8 is also inconvenient, also brought trouble to machine upkeep, and, forge a knife handle 6 in the time promoting, what mainly lean on is the outer ring that promotes bearing 8, has so just increased the damage of bearing 8 side direction.
As shown in Figure 2, the shift sleeve structure of the machine tool chief axis that the utility model provides, comprise main shaft 10, sliding sleeve 2 and the handle 6 of forging a knife, sliding sleeve 2 is enclosed within on main shaft 10, keyway in sliding sleeve is inserted in the square key on main shaft, rotate with main shaft 10, and slidably reciprocate along main shaft 10 by the square key on main shaft, the lateral surface of sliding sleeve 2 is provided with a circle chute, the handle 6 of forging a knife is provided with two relative side arms, a footstalk 3 is installed respectively on two side arms relatively, can footstalk 3 be arranged on the side arm of the handle 6 of forging a knife by lock screw 4 and nut 5, footstalk points to the axle center of sliding sleeve 2, and the opposite end of footstalk 3 extend in the chute of sliding sleeve 2.Directly stir sliding sleeve 2 by footstalk 3, not only avoided use bearing, and repair and replacement are more convenient.
As shown in Figure 3, in the opposite end of two footstalks 3, bearing 8 is all housed, bearing 8 can be needle bearing, and bearing 8 is positioned at the chute of sliding sleeve 2, and the race diameter of bearing 8 is less than the width of chute.Adopt a footstalk 3 is relatively installed respectively on two side arms of the handle 6 of forging a knife, in the opposite end of footstalk 3, bearing 8 is installed, promote the side of chute by the outer ring of bearing 8, thereby realize the promotion of handle 6 to sliding sleeve 2 of forging a knife, avoided the damage of bearing 8 side direction; The race diameter of bearing 8 is arranged to be less than to the width of chute, after the handle 6 of forging a knife completes the impetus of sliding sleeve 2, the outer ring of bearing 8 separates certain interval with the side of chute, can not follow sliding sleeve 2 and rotate together, thereby avoid the long-term High Rotation Speed of bearing 8; In the time that bearing 8 damages, only footstalk 3 need to be separated from the handle 6 of forging a knife is replaceable type bearing 8, has facilitated the replacing of bearing 8.
In the course of work of lathe, the handle 6 of forging a knife promotes bearing 8 by footstalk 3, then is promoted the side of sliding sleeve 2 by bearing 8, and sliding sleeve 2 is slidably reciprocated along main shaft 10, and sliding sleeve 2 is controlled claw 1 and clamped or unclamp push rod 11 by stirring claw 1.
As shown in Figures 3 and 4, on the outer ring of bearing 8, cover has bearing ring 9, and the overall diameter of bearing ring 9 is less than the width of chute.Adopt bearing ring 9 be set on the outer ring of bearing 8, the outer ring of having avoided bearing 8 directly with the contacting of the side of the sliding sleeve 2 of high speed rotating, reduced the wearing and tearing of the outer ring of bearing 8.
As shown in Figure 3, on footstalk 3, also cover has a spacer ring 7, spacer ring 7 between the side arm and bearing 8 of the handle 6 of forging a knife, and with side arm and bearing 8 matched in clearance of the handle 6 of forging a knife.Adopt spacer ring 7 to fill up the gap between side arm and the bearing 8 of the handle 6 of forging a knife, reduced rocking of course of work medial axis handle 3, the thickness of spacer ring 7 is set according to the gap of forging a knife between handle 6 and bearing 8.
In the time choosing bearing 8, the monolateral distance that ensures the outer ring of bearing 8 and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm, the distance of the side of the outer ring of bearing 8 and chute is arranged in the scope of 0.5mm to 1mm, the promotion precision of handle 6 to sliding sleeve 2 not only can ensure to forge a knife, and can ensure after the handle 6 of forging a knife completes the impetus of sliding sleeve 2, the outer ring of bearing 8 not with the contacts side surfaces of sliding sleeve 2.
When at the sheathed bearing ring 9 in the outer ring of bearing 8, the monolateral distance of the outer ring of bearing ring 9 and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm, by bearing holder (housing, cover), the distance of 9 lateral surface and the side of chute is arranged in the scope of 0.5mm to 1mm, the promotion precision of handle 6 to sliding sleeve 2 not only can ensure to forge a knife, and can ensure after the handle 6 of forging a knife completes the impetus of sliding sleeve 2, the lateral surface of bearing ring 9 not with the contacts side surfaces of sliding sleeve 2.
In the time that footstalk 3 is installed, the distance of the end of footstalk 3 and the bottom surface of chute is more than or equal to 0.5mm and is less than or equal to 1mm, the distance of the bottom surface of the end of axle 3 and chute is arranged in the scope of 0.5mm to 1mm, avoid sliding sleeve 2 to contact with the end of footstalk 3 in the time of high speed rotating, improved the service life of sliding sleeve 2.

Claims (8)

1. the shift sleeve structure of a machine tool chief axis, comprise main shaft, sliding sleeve and the handle of forging a knife, described sliding sleeve is enclosed within on main shaft, rotate with main shaft, and slidably reciprocate along main shaft by the keyway on main shaft, the lateral surface of sliding sleeve is provided with a circle chute, the described handle of forging a knife is provided with two relative side arms, it is characterized in that: a footstalk is installed respectively on described two side arms relatively, and described footstalk points to the axle center of sliding sleeve, and the opposite end of footstalk extend in the chute of sliding sleeve.
2. the shift sleeve structure of machine tool chief axis according to claim 1, is characterized in that: bearing is equipped with in the opposite end of described footstalk, and described bearing is positioned at the chute of sliding sleeve, and the race diameter of bearing is less than the width of chute.
3. the shift sleeve structure of machine tool chief axis according to claim 2, is characterized in that: the outer ring sleeve of described bearing has bearing ring, and the overall diameter of described bearing ring is less than the width of chute.
4. the shift sleeve structure of machine tool chief axis according to claim 2, is characterized in that: on described footstalk, also cover has a spacer ring, and described spacer ring, between the side arm and bearing of the handle of forging a knife, and coordinates with side arm and the bearing clearance of the handle of forging a knife.
5. according to the shift sleeve structure of the machine tool chief axis described in claim 2,3 or 4, it is characterized in that: described bearing is needle bearing.
6. the shift sleeve structure of machine tool chief axis according to claim 2, is characterized in that: the monolateral distance of the outer ring of described bearing and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm.
7. the shift sleeve structure of machine tool chief axis according to claim 3, is characterized in that: the monolateral distance of the outer ring of described bearing ring and the side of chute is more than or equal to 0.5mm and is less than or equal to 1mm.
8. according to the shift sleeve structure of the machine tool chief axis described in any one in claim 1 to 4, it is characterized in that: the distance of the end of described footstalk and the bottom surface of chute is more than or equal to 0.5mm and is less than or equal to 1mm.
CN201420036953.9U 2014-01-21 2014-01-21 Sliding sleeve structure of machine tool spindle Withdrawn - After Issue CN203751343U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420036953.9U CN203751343U (en) 2014-01-21 2014-01-21 Sliding sleeve structure of machine tool spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420036953.9U CN203751343U (en) 2014-01-21 2014-01-21 Sliding sleeve structure of machine tool spindle

Publications (1)

Publication Number Publication Date
CN203751343U true CN203751343U (en) 2014-08-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420036953.9U Withdrawn - After Issue CN203751343U (en) 2014-01-21 2014-01-21 Sliding sleeve structure of machine tool spindle

Country Status (1)

Country Link
CN (1) CN203751343U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737028A (en) * 2014-01-21 2014-04-23 南京建克机械有限公司 Slide bushing structure of machine tool spindle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103737028A (en) * 2014-01-21 2014-04-23 南京建克机械有限公司 Slide bushing structure of machine tool spindle
CN103737028B (en) * 2014-01-21 2016-09-28 南京建克机械有限公司 A kind of shift sleeve structure of machine tool chief axis

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C14 Grant of patent or utility model
GR01 Patent grant
C25 Abandonment of patent right or utility model to avoid double patenting
AV01 Patent right actively abandoned

Granted publication date: 20140806

Effective date of abandoning: 20160928