CN114472940B - Mechanism for installing and supporting spindle unit of numerical control vertical turning center - Google Patents
Mechanism for installing and supporting spindle unit of numerical control vertical turning center Download PDFInfo
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- CN114472940B CN114472940B CN202210303382.XA CN202210303382A CN114472940B CN 114472940 B CN114472940 B CN 114472940B CN 202210303382 A CN202210303382 A CN 202210303382A CN 114472940 B CN114472940 B CN 114472940B
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- inner hexagonal
- eccentric
- turning center
- spindle
- vertical turning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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Abstract
The invention discloses a mechanism for installing and supporting a spindle unit of a numerical control vertical turning center, which relates to the technical field of numerical control machining and comprises a spindle sleeve and a vertical turning center lathe bed. The invention solves the problems of obtaining an operating space and ensuring reliable assembly and optimal efficiency by means of a mechanical structure which, by radially supporting the structure, enables the spindle unit to be firmly mounted in the correct position on the machine bed.
Description
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a mechanism for installing and supporting a spindle unit of a numerical control vertical turning center.
Background
The numerical control vertical turning center is a high value-added processing device, is suitable for processing parts with complex short shafts, discs and shapes and large weight with high precision, and the selection of the self structure of a machine tool and a main shaft unit is a basic precondition for ensuring the realization of functions.
The spindle units of vertical turning centers often work under large cutting loads, for which reason the rotating spindle usually employs high-stiffness support bearings, while the spindle sleeve housing is also of sufficient thickness to accommodate such large loads, and the spindle units are mounted to ensure that the spindle sleeve remains in firm coupling relationship with the machine bed, in horizontal turning centers, the dimension of the box is not so great due to the use of separate spindle boxes, which are easily kept parallel in front and rear end face machining. In addition, the spindle box is arranged at the upper part of the lathe bed, so that the installation and operation space of the spindle unit is basically not limited; the adjustment of the rotation axis of the main shaft is realized through scraping between the joint surfaces of the main shaft box and the lathe bed, so that the main shaft unit is provided with various choices, namely, the front end surface and the rear end surface are connected by flanges, and the radial screw thread jackscrew can be selected to jack up at the rear part, so that the main shaft unit of the horizontal turning center is usually installed without special consideration.
However, the vertical turning center is different from the vertical turning center in that the main shaft unit mounting hole is arranged on the lathe bed, the structural size of the lathe bed is large, and the parallelism between flange mounting surfaces is not easy to ensure; in order to improve the rigidity of the machine tool, the rib spacing in the machine tool body is arranged densely, and a sufficient operation space is difficult to obtain by adopting direct radial support; in addition, if the rear end of the main shaft unit is also fixed by adopting a flange, the outer diameter of the belt wheel of the main shaft is usually larger than that of the inner hole of the rear flange, the main shaft must be disassembled first, and then the main shaft unit is reloaded after the flange is fixed.
Disclosure of Invention
The invention aims to provide a mechanism for installing and supporting a spindle unit of a numerical control vertical turning center, and provides a supporting structure of the spindle unit of the numerical control vertical turning center, namely a mechanical device which can change the operation direction, easily obtain the operation space and ensure reliable assembly and optimal efficiency.
The aim of the invention can be achieved by the following technical scheme:
the mechanism for installing and supporting the spindle unit of the numerical control vertical turning center comprises a vertical turning center lathe bed, wherein the top end of the vertical turning center lathe bed is provided with an installation end face, a spindle sleeve extending to the upper side of the vertical turning center lathe bed is installed in the vertical turning center lathe bed, a flange connected with the installation end face is arranged on the outer side of the spindle sleeve and used for assembling the spindle sleeve and the vertical turning center lathe bed, and a belt pulley is installed at the bottom of the spindle sleeve;
the side of the main shaft sleeve is provided with a plurality of matching holes positioned on one side of the vertical turning center lathe bed, brass rods are arranged in the plurality of matching holes, and when the main shaft sleeve is assembled, the brass rods cannot exceed the outer wall of the main shaft sleeve, the tail end of the main shaft sleeve is provided with a plurality of inner hexagonal eccentric screws corresponding to the brass rods, the bottom end of the main shaft sleeve is provided with a plurality of inner hexagonal flat end set screws locking the inner hexagonal eccentric screws so as to prevent unexpected loosening, and the inner hexagonal eccentric screws rotate to drive the brass rods to be radially ejected out and press the brass rods on the installation hole wall of the vertical turning center lathe bed.
As a further scheme of the invention: the eccentric screw of hexagon in be provided with the deflection section, and the deflection section side of eccentric screw of hexagon in is provided with the bottom opening that is located the main shaft sleeve lateral wall, and when using, the one end roof pressure of brass rod is in the eccentric screw of hexagon in the side of deflection section, when the eccentric screw of hexagon rotates, drives its deflection section rotation to with brass rod ejecting to the outside of main shaft sleeve's lateral wall.
As a further scheme of the invention: the diameter of the brass rod is the same as that of a bottom hole of the inner hexagonal eccentric screw positioned at the bottom of the main shaft sleeve.
As a further scheme of the invention: the inner hexagonal eccentric screw is a fine thread, the eccentric quantity e determines the expansion quantity of the brass rod, the eccentric shaft diameter m and the eccentric quantity e jointly determine the rotation range of the eccentric shaft, and the rotation range cannot exceed the diameter of a thread bottom hole of the inner hexagonal eccentric screw so as to ensure the screwing operation of the inner hexagonal eccentric screw.
As a further scheme of the invention: the head of the inner hexagonal eccentric screw is carved with a mark which can prompt the relative position of the eccentric shaft part of the inner hexagonal eccentric screw relative to the inner hexagonal eccentric screw, and the mark can be in the form of pits, score lines or any information which can be expressed and corresponds to the maximum or minimum eccentric position of the eccentric shaft;
as a further scheme of the invention: and a gap is formed between the main shaft sleeve and the belt pulley, so that a spanner operation space is obtained, and the belt pulley is not required to be detached.
As a further scheme of the invention: the eccentric screw of the inner hexagon is provided with a deflection section, the screwing depth and the screwing direction of the eccentric screw of the inner hexagon are adjusted before the main shaft sleeve is installed in the installation hole of the vertical turning center lathe bed, then the brass rod is inserted, the brass rod is integrally installed in the matching hole of the main shaft sleeve, and one end of the brass rod, which is positioned in the main shaft sleeve, is abutted against one side of the deflection section of the eccentric screw of the inner hexagon.
As a further scheme of the invention: the number of the inner hexagon eccentric screws and the number of the inner hexagon flat end set screws are even, the number of the supporting points are uniformly distributed on the circumference of the tail part of the main shaft sleeve, and in the process of applying pressure, two spatially opposite screws are in a group, and the pretightening force is added to the target value for multiple times according to the group.
The invention has the beneficial effects that:
the invention solves the problems of obtaining an operation space and ensuring reliable assembly and optimized efficiency through a mechanical structure, and the structure comprises a main shaft sleeve, a plurality of supporting copper bars, a corresponding number of inner hexagonal eccentric screws and inner hexagonal flat end fastening screws, and can firmly mount the main shaft unit at the correct position on a machine tool body through radially supporting the structure, and the influence of scraping the front flange mounting surface of the main shaft unit on the perpendicularity of the flange mounting surface and the main shaft unit mounting hole and the parallelism of the flange mounting surface and the rear end surface is avoided.
When the mechanical structure is used, the support rod is made of copper materials, so that the support rod can have sufficient support strength on the premise of enough propping force so as to meet the requirement of heavy cutting of the main shaft; in addition, when the copper material is in contact with the eccentric cylindrical surface of the outer sleeve of the main shaft unit and the eccentric cylindrical surface of the inner hexagonal eccentric screw, slight deformation is easy to occur, so that the action effect of line contact of the copper material is improved, the stress area is increased, and even the eccentric screw has certain self-locking capability.
More advantageously, the mechanical structure uses the axial space between the pulley and the sleeve of the main shaft unit when in operation, and the main shaft unit can be conveniently installed and fixed without disassembling the pulley or changing the rib plate arrangement of the lathe bed, especially in the case that the main shaft needs to be disassembled and maintained, the effect of convenience is obvious.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a cross-sectional view of a spindle unit mounting support structure in accordance with the present invention;
FIG. 2 is a perspective view of a hexagon socket head cap screw according to the present invention;
FIG. 3 is a schematic illustration of the internal hexagonal eccentric screw marking of the present invention;
FIG. 4 is a diagram illustrating the circumferential arrangement and locking sequence of the support structure of the present invention;
fig. 5 is a cross-sectional view of a headstock of a horizontal turning center.
In the figure: 1. the device comprises a main shaft sleeve 2, a brass rod 3, an inner hexagonal eccentric screw 4, an inner hexagonal flat end set screw 5, a belt pulley 6, a vertical turning center lathe bed 7 and a horizontal turning center main shaft box; 8. and (5) marking.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
During machining, the spindle with the chuck interface is arranged in the spindle sleeve 1 through the support of the cylindrical roller bearing and the angular contact ball bearing, and drives the workpiece to rotate at a high speed to perform turning main movement, so that the workpiece with high precision and complex shape can be obtained. In the turning process, the cutting force is very large, if the spindle sleeve 1 is not stably supported, that is, the spindle unit cannot be correctly installed and fixed, on one hand, the excessive deformation of the sleeve is caused, the machining precision is caused to exceed the allowable error, and on the other hand, the cutting vibration is also possibly caused, so that the damage to the parts of the cutting system is caused.
Referring to fig. 1-5, the invention discloses a mechanism for installing and supporting a spindle unit of a numerical control vertical turning center, which comprises a vertical turning center lathe bed 6, wherein the top end of the vertical turning center lathe bed 6 is provided with an installation end face, a spindle sleeve 1 extending to the upper side of the vertical turning center lathe bed 6 is installed inside the vertical turning center lathe bed 6, a flange connected with the installation end face is arranged on the outer side of the spindle sleeve 1 and used for assembling the spindle sleeve 1 and the vertical turning center lathe bed 6, a belt pulley 5 is installed at the bottom of the spindle sleeve 1, a gap is formed between the spindle sleeve 1 and the belt pulley 5 and used for obtaining a spanner operation space, and the belt pulley 5 is not required to be detached;
the side of the main shaft sleeve 1 is provided with a plurality of matching holes positioned on one side of the vertical turning center lathe bed 6, brass rods 2 are arranged in the plurality of matching holes, and when the main shaft sleeve 1 is assembled, the brass rods 2 cannot exceed the outer wall of the main shaft sleeve 1, the tail end of the main shaft sleeve 1 is provided with a plurality of inner hexagonal eccentric screws 3 corresponding to the brass rods 2, the bottom end of the main shaft sleeve 1 is provided with a plurality of inner hexagonal flat end fastening screws 4 which lock the inner hexagonal eccentric screws 3 to prevent unexpected loosening, the inner hexagonal eccentric screws 3 rotate to drive the brass rods 2 to be radially ejected, and the brass rods 2 are propped against the installation hole wall of the vertical turning center lathe bed 6.
Referring to fig. 2, the eccentric screw 3 has a deflection section, and a bottom hole is formed on a side surface of the deflection section of the eccentric screw 3, and when in use, one end of the brass rod 2 is pressed against a side surface of the deflection section of the eccentric screw 3, and when the eccentric screw 3 rotates, the deflection section is driven to rotate, so that the brass rod 2 is ejected out of the side wall of the main shaft sleeve 1.
The diameter of the brass rod 2 is the same as the diameter of a bottom hole of the inner hexagonal eccentric screw 3 positioned at the bottom of the main shaft sleeve 1.
The inner hexagonal eccentric screw 3 is a fine thread, the eccentric quantity e determines the expansion quantity of the brass rod 2, and the eccentric shaft diameter m and the eccentric quantity e jointly determine the rotation range of the eccentric shaft, and the rotation range cannot exceed the diameter of a thread bottom hole of the inner hexagonal eccentric screw so as to ensure the screwing operation of the inner hexagonal eccentric screw;
the threaded portion of the internal hexagonal eccentric screw 3 takes M12X1, the eccentric e takes 0.3, the diameter M of the eccentric shaft takes 9, and the corresponding threaded bottom hole of the corresponding spindle sleeve 1 is 10.2mm.
Referring to fig. 3, the head of the inner hexagonal eccentric screw 3 is engraved with a mark 8 to indicate the relative position of the eccentric shaft portion of the inner hexagonal eccentric screw 3 with respect to the inner hexagonal eccentric screw 3, and the mark 8 may be in the form of a pit, a scribe line or any information and corresponds to the maximum or minimum eccentric position of the eccentric shaft;
in this embodiment, the mark 8 is a circular pit, and corresponds to the largest position of the eccentric shaft in the hexagonal eccentric screw 3, so that an operator can conveniently control the screwing depth and the position prescribed by the eccentric of the hexagonal eccentric screw 3, so that the brass rod 2 is retracted into the matching hole, and after the spindle unit has penetrated into the bed seat hole, the mark 8 does not need to be observed, and the tightening is performed through torque control.
Referring to fig. 4, the eccentric screw 3 is provided with a deflection section, the screwing depth and direction of the eccentric screw 3 are adjusted before the spindle sleeve 1 is installed into the installation hole of the lathe bed 6 of the vertical lathe center, the brass rod 2 is inserted, the brass rod 2 is integrally installed into the matching hole of the spindle sleeve 1, and one end of the brass rod 2 located inside the spindle sleeve 1 abuts against one side of the deflection section of the eccentric screw 3.
Referring to fig. 5, in the horizontal turning center headstock 7, the number of the inner hexagonal eccentric screws 3 and the inner hexagonal flat end set screws 4 is even, the number of the supporting points is uniformly distributed on the circumference of the tail portion of the headstock 1, and in the process of applying pressure, two spatially opposite pairs are in a group, and the pretightening force is applied to the target value for multiple times according to the group.
The working principle of the invention is as follows:
as shown in fig. 1, after the front end flange of the spindle sleeve 1 is correctly fixed, the rear end of the spindle sleeve 1 needs to be supported by the mechanical structure according to the present patent.
Before the spindle unit penetrates into the numerical control vertical turning center lathe bed 6, the inner hexagonal eccentric screw 3 and the brass rod 2 need to be installed first, and the brass rod 2 is ensured to be integrally positioned in a matched hole on the spindle sleeve 1 and cannot exceed the outer wall of the spindle sleeve 1; and then, sequentially carrying out step-by-step boosting on the a, the a ', the b ', the c and the c ' according to the grouping sequence shown in the figure 4 until the pretightening force meets the use requirement. In this embodiment, the circumference is supported at 6 points and therefore divided into three groups. Finally, the locking is carried out through the inner hexagonal flat end set screw 4 so as to prevent unexpected loosening;
in the whole installation process, the belt pulley 5 of the main shaft unit does not need to be assembled and disassembled, for example, the rear end of the unit adopts a flange mode and the like, the influence of the flange installation end on the perpendicularity of the main shaft axis does not need to be considered, and the operation is easy and the economy is good.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (8)
1. The mechanism for installing and supporting the spindle unit of the numerical control vertical turning center comprises a spindle sleeve (1) and is characterized in that a plurality of brass rods (2) are installed on the rear end face of the spindle sleeve (1), and a plurality of inner hexagonal eccentric screws (3) corresponding to the brass rods (2) are installed at the tail end of the spindle sleeve (1);
the inner hexagonal eccentric screw (3) rotates to drive the brass rod (2) to be radially ejected out;
the bottom end of the main shaft sleeve (1) is provided with a plurality of inner hexagonal flat end set screws (4) for locking the inner hexagonal eccentric screws (3);
the eccentric quantity e determines the expansion and contraction quantity of the brass rod (2), and the eccentric shaft diameter m and the eccentric quantity e jointly determine the rotation range of the eccentric shaft, and the rotation range is not more than the diameter of a threaded bottom hole of the hexagonal eccentric screw positioned at the bottom of the main shaft sleeve (1) so as to ensure the screwing operation of the hexagonal eccentric screw.
2. The mechanism for installing and supporting a spindle unit of a numerical control vertical turning center according to claim 1, wherein the inner hexagonal eccentric screw (3) is provided with a deflection section, and a bottom hole positioned on the side wall of the spindle sleeve (1) is arranged on the side surface of the deflection section of the inner hexagonal eccentric screw (3), and when in use, one end of the brass rod (2) is pressed against the side surface of the deflection section in the inner hexagonal eccentric screw (3), and when the inner hexagonal eccentric screw (3) rotates, the deflection section of the brass rod (2) is driven to rotate, so that the brass rod (2) is ejected out of the side wall of the spindle sleeve (1).
3. The mechanism for mounting and supporting a spindle unit of a numerical control vertical turning center according to claim 2, wherein the diameter of the brass rod (2) is the same as the diameter of a bottom hole of an inner hexagonal eccentric screw (3) positioned at the bottom of a spindle sleeve (1).
4. A mechanism for the mounting support of a spindle unit of a numerically controlled vertical turning center according to claim 3, characterized in that the internal hexagonal eccentric screw (3) is a fine thread.
5. The mechanism for the installation support of a spindle unit of a numerically controlled vertical turning center according to claim 4, characterized in that the head of the internal hexagonal eccentric screw (3) is engraved with a mark (8).
6. The mechanism for mounting and supporting a spindle unit of a numerically controlled vertical turning center according to claim 1, characterized in that a pulley (5) is mounted at the bottom of the spindle sleeve (1), and a gap for operation is provided between the spindle sleeve (1) and the pulley (5).
7. The mechanism for mounting and supporting the spindle unit of the numerical control vertical turning center according to claim 1, wherein the number of the inner hexagonal eccentric screws (3) and the inner hexagonal flat end set screws (4) is even, and the inner hexagonal eccentric screws (3) and the inner hexagonal flat end set screws (4) are uniformly distributed on the circumference of the tail of the spindle sleeve (1).
8. The mechanism for mounting and supporting a spindle unit of a numerical control vertical turning center according to claim 7, wherein a plurality of the inner hexagonal eccentric screws (3) and the inner hexagonal flat end set screws (4) are divided into a plurality of groups, each group comprises two groups of the inner hexagonal eccentric screws (3) and the inner hexagonal flat end set screws (4), and each group of the inner hexagonal eccentric screws (3) and the inner hexagonal flat end set screws (4) are symmetrically distributed on two sides of the tail end of the spindle sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210303382.XA CN114472940B (en) | 2022-03-24 | 2022-03-24 | Mechanism for installing and supporting spindle unit of numerical control vertical turning center |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210303382.XA CN114472940B (en) | 2022-03-24 | 2022-03-24 | Mechanism for installing and supporting spindle unit of numerical control vertical turning center |
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| Publication Number | Publication Date |
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| CN114472940A CN114472940A (en) | 2022-05-13 |
| CN114472940B true CN114472940B (en) | 2023-04-28 |
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| CN202210303382.XA Active CN114472940B (en) | 2022-03-24 | 2022-03-24 | Mechanism for installing and supporting spindle unit of numerical control vertical turning center |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3779527D1 (en) * | 1986-08-13 | 1992-07-09 | Brotschi & Co Ag Geb | DURING AND ADJUSTABLE DOOR AND WINDOW TAPE. |
| DE102004013014A1 (en) * | 2004-03-16 | 2005-10-06 | Reishauer Ag | Device for fastening a tool carrier |
| CN201275626Y (en) * | 2008-09-27 | 2009-07-22 | 宝鸡忠诚机床股份有限公司 | Vertical lathe main spindle box mounting structure |
| EP2567778B1 (en) * | 2011-09-08 | 2014-05-14 | Tornos SA | Method and system for adjusting the spindles of a multi-spindles machine-tool |
| CN202356635U (en) * | 2011-11-22 | 2012-08-01 | 北京星航机电设备厂 | Spindle locking device of horizontal boring machine |
| CN204353490U (en) * | 2014-12-29 | 2015-05-27 | 朱桂林 | A kind of high accuracy plain spindle structure |
| DE102015101352A1 (en) * | 2015-01-29 | 2016-08-04 | Netzsch Pumpen & Systeme Gmbh | Stator-rotor system and method for adjusting a stator in a stator-rotor system |
| CN206028746U (en) * | 2016-08-08 | 2017-03-22 | 纽威数控装备（苏州）有限公司 | Vertical lathe spindle unit structure |
| CN213702620U (en) * | 2020-10-29 | 2021-07-16 | 齐齐哈尔齐一机工业产品有限公司 | Propeller plane tool rest retainer |
| CN112338215B (en) * | 2020-11-10 | 2024-05-03 | 井冈山大学 | High-speed main shaft adjusting method convenient for realizing secondary dynamic balance |
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- 2022-03-24 CN CN202210303382.XA patent/CN114472940B/en active Active
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