CN201950506U - Spindle cutter releasing and unloading mechanism - Google Patents
Spindle cutter releasing and unloading mechanism Download PDFInfo
- Publication number
- CN201950506U CN201950506U CN2010206863134U CN201020686313U CN201950506U CN 201950506 U CN201950506 U CN 201950506U CN 2010206863134 U CN2010206863134 U CN 2010206863134U CN 201020686313 U CN201020686313 U CN 201020686313U CN 201950506 U CN201950506 U CN 201950506U
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- China
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- cylinder body
- piston
- spindle
- unloading mechanism
- bearing
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- Expired - Lifetime
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Abstract
The utility model discloses a structure of a spindle cutter releasing and unloading mechanism, which is characterized in that a pressure cover is coaxially fixed and installed on the back end surface of a spindle, a nut is fixed and installed on a cutter pull rod, a thrust bearing of a cutter releasing structure is fixed at the front end of a piston, the piston is arranged in a cylinder body, an unloading disc which is fixed with the cylinder body is arranged on the upper surface of a boss of the pressure cover to form lapping, a cylinder sleeve is fixed and installed on a spindle box and is arranged in a same installation hole with the cylinder body, a spring is installed between the periphery of the tail end of the piston and the cylinder body, the unloading mechanism installation holes of the cylinder body, the cylinder sleeve and the spindle box together form a negative closed oil cavity, an axial oil injection hole is processed at the back part of the cylinder body and forms a positive closed oil cavity with the piston, and a radial oil injection hole is processed at the tail end of the cylinder sleeve. With the adoption of the utility model, the spindle bearing does not bear the impact of the axial force when a cutter is released, therefore, the stress condition of the spindle bearing is improved, the retentivity of the rotary accuracy of the spindle bearing is promoted, and the service life of the bearing is prolonged.
Description
Technical field
When the utility model relates to machining center, CNC milling machine main shaft pine cutter, improve the stressing conditions of main shaft bearing, improve the retentivity of main shaft bearing rotating accuracy, prolong the service life of bearing.
Background technology
At present, the main shaft cutter-removing mechanism of domestic machining center, CNC milling machine does not adopt the unloading mechanism design, the axial force that produces during the frequent pine folder of main shaft cutter acts directly on (about 15000N～20000N), destroyed the rotating accuracy of main shaft bearing, the service life of reduction bearing on the bearing.
Along with market is more and more higher to the requirement in Digit Control Machine Tool precision, reliability and service life, main shaft is as the lathe vitals, the retentivity of its rotating accuracy and also become service life more and more important.Therefore must be noted that loose cutter power to the influence in main shaft bearing rotating accuracy and service life when the design main shaft, the design relief arrangement improves the stressing conditions of main shaft bearing, improves the retentivity of main shaft bearing rotating accuracy, prolongs the service life of bearing.
Summary of the invention
The purpose of this utility model provides a kind of main shaft pine cutter unloading mechanism of CNC milling machine, and the axial force that produces when solving main shaft pine cutter is to the influence in main shaft bearing rotating accuracy and life-span.
A kind of structure of main shaft pine cutter unloading mechanism, it is characterized in that at the coaxial fixed installation gland of rear-end of spindle face, nut is fixedly mounted on the broaching tool bar, the thrust bearing of pine knife structure is fixed on piston nose, piston places in the cylinder body, and the off-load dish fixing with cylinder body places the boss upper surface of gland to form overlap joint, and cylinder sleeve is fixedly mounted on the main spindle box, and be in the same installing hole with cylinder body, between piston tail end periphery and the cylinder body spring is installed; The anti-closed oil pocket of the common formation of unloading mechanism installing hole on cylinder body, cylinder sleeve and the main spindle box, the cylinder body rear portion is processed with axial pouring orifice, and forms positive closed oil pocket with piston, and the cylinder sleeve tail end is processed with radially pouring orifice.
This novel beneficial effect is:
This equipment that the design relates to is mainly used in the main shaft pine folder cutter of machining center, CNC milling machine.The main shaft unloading mechanism is carried out the transmission of motion available hydraulic.It can eliminate main shaft bearing because the axial force that main shaft pine cutter is born, pine cutter power is to the harmful effect in bearing rotating accuracy and service life when having solved frequent pine folder cutter, the axial force that makes main shaft bearing no longer bear Song Daoshi is impacted, improve the stressing conditions of main shaft bearing, improve the retentivity of main shaft bearing rotating accuracy, prolong the service life of bearing.
Description of drawings
Fig. 1 is the structural representation of this novel main shaft pine cutter unloading mechanism.
The specific embodiment
The structure of main shaft pine cutter unloading mechanism, as shown in Figure 1, it is characterized in that the rear-end of spindle face fixes the gland 2 that an off-load is used, nut 1 is fixedly mounted on the broaching tool bar, the thrust bearing 3 of pine knife structure is fixed on piston 7 front ends, and piston 7 places in the cylinder body 4, and the off-load dish of fixing with cylinder body 4 13 places the boss upper surface of gland 2 to form overlap joint, cylinder sleeve 5 is fixedly mounted on the main spindle box 14, and is in the same unloading mechanism installing hole with cylinder body 4.Process unloading mechanism installing hole and spindle mounting hole on main spindle box 14 bodies; Cylinder body 4, cylinder sleeve 5 and the anti-closed oil pocket 6 of the common formation of the unloading mechanism installing hole on the main spindle box 14 are equipped with spring 12 between piston 7 tail end peripheries and the cylinder body 4; Cylinder body 4 rear portions are processed with axial pouring orifice 10, and form positive closed oil pocket 8 with piston 7.Cylinder sleeve 5 tail ends are processed with radially pouring orifice 9.
The installing hole of unloading mechanism cylinder body 4 and spindle mounting hole are the hole that processes on main spindle box 14, guarantee two axialities that the hole is good by reasonably adding technology, help when off-load, guaranteeing the good contact of off-load dish 13 and gland 2, and then the load of improving between the two distributes the reliability of raising unloading mechanism.
Under the main spindle clamp tool state, the gap of 2～3mm is arranged between gland 2 and the off-load dish 13 during operation, assurance main shaft gland 2 in the running can not interfere with off-load dish 13.When main shaft pine cutter, cylinder body 4 moves backward, drives off-load dish 13 and hooks with gland 2, plays the effect of off-load.Behind the main spindle clamp tool, piston 7 moves backward under the effect of dish spring 11 and spring 12 and resets, and hydraulic oil injects anti-closed oil pocket 6 from pouring orifice 9 simultaneously, and promotion cylinder body 4 moves forward and resets, and recovers the gap of 2～3mm between gland 2 and the off-load dish 13.
Claims (2)
1. main shaft pine cutter unloading mechanism, it is characterized in that at the coaxial fixed installation gland of rear-end of spindle face (2), nut (1) is fixedly mounted on the broaching tool bar, the thrust bearing (3) of pine knife structure is fixed on piston (7) front end, piston (7) places in the cylinder body (4), the off-load dish (13) fixing with cylinder body (4) places the boss upper surface of gland (2) to form overlap joint, cylinder sleeve (5) is fixedly mounted on the main spindle box (14), and be in the same installing hole with cylinder body (4), between piston (7) tail end periphery and the cylinder body (4) spring (12) is installed; Cylinder body (4), cylinder sleeve (5) and the common anti-closed oil pocket (6) that forms of the unloading mechanism installing hole on the main spindle box (14), cylinder body (4) rear portion is processed with axial pouring orifice (10), and forming positive closed oil pocket (8) with piston (7), cylinder sleeve (5) tail end is processed with radially pouring orifice (9).
2. main shaft pine cutter unloading mechanism according to claim 1 is characterized in that piston (7) resets by dish spring (11) and spring (12) when main spindle clamp tool, cylinder body (4) promotes to reset by hydraulic oil when main spindle clamp tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206863134U CN201950506U (en) | 2010-12-29 | 2010-12-29 | Spindle cutter releasing and unloading mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206863134U CN201950506U (en) | 2010-12-29 | 2010-12-29 | Spindle cutter releasing and unloading mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201950506U true CN201950506U (en) | 2011-08-31 |
Family
ID=44494633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206863134U Expired - Lifetime CN201950506U (en) | 2010-12-29 | 2010-12-29 | Spindle cutter releasing and unloading mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201950506U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126150A (en) * | 2010-12-29 | 2011-07-20 | 中捷机床有限公司 | Main shaft knife loosening and unloading mechanism |
| CN104625826A (en) * | 2015-02-13 | 2015-05-20 | 广州市昊志机电股份有限公司 | Reset cylinder mechanism of electric spindle cam tool loosening system |
-
2010
- 2010-12-29 CN CN2010206863134U patent/CN201950506U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102126150A (en) * | 2010-12-29 | 2011-07-20 | 中捷机床有限公司 | Main shaft knife loosening and unloading mechanism |
| CN104625826A (en) * | 2015-02-13 | 2015-05-20 | 广州市昊志机电股份有限公司 | Reset cylinder mechanism of electric spindle cam tool loosening system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110831 |