CN119910211B - A machine tool structure with avoidance fixed spindle - Google Patents
A machine tool structure with avoidance fixed spindle Download PDFInfo
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- CN119910211B CN119910211B CN202510409124.3A CN202510409124A CN119910211B CN 119910211 B CN119910211 B CN 119910211B CN 202510409124 A CN202510409124 A CN 202510409124A CN 119910211 B CN119910211 B CN 119910211B
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Abstract
本发明涉及机床辅助结构的技术领域，特别是涉及一种避让式固定主轴的机床结构，包括固定单元，对所述主轴的一端进行夹持，包括盘体和若干压组，若干所述压组围绕所述盘体轴线分布于所述盘体端面上，若干所述压组能够相互靠近或分离，所述压组包括若干辊体；通过利用若干含有辊体的压组来对主轴进行固定，可以保证压组在静止的情况下允许主轴进行旋转运动，从而满足加工要求，同时这种方式可以利用相邻两个压组之间的空隙来允许机床上的刀具穿过，从而对多组压组之间遮挡的部分主轴进行加工，实现压组与刀具的相互避让方式，而不必如传统方式需要将主轴调换方位来进行加工，简化加工方式，提高加工便利性。
The present invention relates to the technical field of machine tool auxiliary structures, and in particular to a machine tool structure with an avoidance-type fixed spindle, comprising a fixing unit for clamping one end of the spindle, comprising a disc body and a plurality of pressing groups, wherein the plurality of pressing groups are distributed on the end surface of the disc body around the axis of the disc body, and the plurality of pressing groups can be close to or separated from each other, and the pressing group comprises a plurality of roller bodies; by using a plurality of pressing groups containing roller bodies to fix the spindle, it can be ensured that the pressing group allows the spindle to rotate when it is stationary, thereby meeting the processing requirements, and at the same time, this method can utilize the gap between two adjacent pressing groups to allow the tool on the machine tool to pass through, thereby processing the part of the spindle blocked between the plurality of pressing groups, realizing the mutual avoidance method between the pressing group and the tool, without having to change the orientation of the spindle for processing as in the traditional method, thereby simplifying the processing method and improving the processing convenience.
Description
Technical Field
The invention relates to the technical field of auxiliary structures of machine tools, in particular to a machine tool structure with an avoidance type fixed main shaft.
Background
The main shaft is a key component in a machine tool or similar equipment, is a core component used for installing workpieces or cutters and can drive the workpieces or cutters to rotate, and in machining, the quality of the main shaft directly affects important indexes such as machining precision, efficiency, surface quality and the like.
The spindle is usually manufactured from high strength alloy steel, and is subjected to precision machining and heat treatment under constant temperature and constant humidity conditions to ensure sufficient rigidity and precision, and the design and configuration of the spindle are different according to different application requirements, for example, the spindle may need to support high-speed operation on a numerical control machine tool, and meanwhile, the spindle also has good dynamic response performance and thermal stability so as to ensure long-time working reliability.
At present, the processing of a main shaft is finished on a high-precision machine tool, the main shaft is clamped and fixed through a chuck or other structures on the machine tool, the main shaft is rotated, the main shaft is processed by matching with a cutter on the machine tool, and the existing chuck structure on the market has a plurality of defects in practical application, for example, when the chuck clamps the main shaft in real time, the cutter cannot move to the clamping position due to the shielding and synchronous rotation of the chuck, so that the cutter cannot process the position of the main shaft, the main shaft needs to be overturned and clamped by utilizing other positions on the main shaft, the original clamping position is exposed, and the main shaft is processed, so that the processing is extremely inconvenient.
Disclosure of Invention
In view of the above technical problems, the invention provides a machine tool structure for fixing a spindle in an avoidance manner, which adopts the following specific technical scheme:
according to a first aspect of the present invention, there is provided a machine tool structure for fixing a spindle by avoiding, the machine tool structure being mounted on a machine tool and fixing the spindle, the machine tool structure comprising:
The fixing unit is used for clamping one end of the main shaft and comprises a disc body and a plurality of pressing groups, the pressing groups are distributed on the end face of the disc body around the axis of the disc body, the pressing groups can be mutually close to or separated from each other, the pressing groups comprise a plurality of roller bodies, the roller bodies are used for fixing the main shaft in an extrusion mode, and the roller bodies rotate at least in a part of the moving section of the roller bodies and drive the main shaft to rotate;
A lifting unit for lifting the other end of the main shaft;
the power unit is used for providing power for the movement of the roller body;
Wherein, the disk body with lift the unit all is fixed on the lathe, power unit sets up on the disk body.
In some embodiments of the present invention, the number of the press groups is at least three, the coverage area in the circumferential direction of the disc body is larger than a semicircle, the number of the roller bodies in the press groups is at least two, and the axes of the roller bodies are parallel to each other.
In some embodiments of the invention, the press set moves in a radial direction along the end face of the disc.
In some embodiments of the invention, the press set further includes a side press portion that positions the spindle in a self-axial direction;
The side pressure part comprises two supporting bodies, and a plurality of rolling bodies which are in contact with the main shaft are arranged on the supporting bodies.
In some embodiments of the invention, the rolling bodies are in a frustum shape, and when the roller bodies are in the working position, the conical tips of the rolling bodies are coincident with the axis of the disc body.
In some embodiments of the invention, the press set further comprises a moving seat;
one supporting body in the side pressure part is fixed on the corresponding moving seat, and the other supporting body moves along the vertical connecting line direction between the two supporting bodies and limits the position of the main shaft in the self axis direction.
In some embodiments of the present invention, a plurality of tubes are inserted into one of the support bodies fixed on the moving seat in the side pressure portion, each of the rollers is correspondingly fixed at an end of the tube, the power unit drives the roller to rotate through the tube, a pull column is inserted into each of the tubes in a sliding manner, and the pull column passes through the corresponding roller and is fixed on the other support body, and the power unit drives the corresponding support body to move through the pull column.
In some embodiments of the invention, the tray is hollow;
The power unit comprises a movable ring which is positioned on the inner side of the disc body in a sliding manner and an oil cylinder which is positioned on the inner side of the disc body and provides power for the movement of the movable ring, the movable ring is in transmission connection with each movable seat, and when the movable ring moves, a plurality of movable seats are mutually close to or separated;
The movable ring is coaxial with the disc body, the movable ring moves along the axis direction of the movable ring, the end face of the movable ring, which faces the movable seat, is set to be a conical surface, and the end face of the movable seat, which faces the movable ring, is set to be a sloping surface matched with the conical surface of the movable ring.
In some embodiments of the present invention, the power unit further includes a pull ring located inside the moving ring and connected to each pull post, the pull ring is connected to the fixed end of each cylinder through a connection frame, the fixed end of each cylinder is connected to the disc through an elastomer, the elastomer provides elastic supporting force for the cylinder, and the connection frame is slidably disposed in the disc.
In some embodiments of the present invention, a frame for supporting the tray body is disposed outside the tray body, the tray body is relatively fixed on a machine tool through the frame, the tray body rotates on the frame, and a main motor and a power wheel for providing power for rotation of the tray body are disposed on the frame.
The beneficial effects of the invention are as follows:
Through utilizing a plurality of press groups that contain the roll body to fix the main shaft, can guarantee to press the group and allow the main shaft to carry out rotary motion under stationary condition to satisfy the processing requirement, this kind of mode can utilize the space between two adjacent press groups to allow the cutter on the lathe to pass simultaneously, thereby press the partial main shaft that shelters from between the group to the multiunit to press and carry out processing, realize pressing the mutual mode of dodging of group and cutter, and need not to change the main shaft and carry out processing as traditional mode, simplify the processing mode, improve the processing convenience, and this kind of mode has avoided producing indentation and the risk of damage on the clamping position of main shaft.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;
FIG. 3 is a schematic view of an exploded structure of a fixing unit according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an exploded construction of a power unit in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a movable base according to an embodiment of the present invention;
fig. 6 is a schematic view of the structure of the cylinder and the supply and discharge passage in the embodiment of the present invention.
Reference numerals:
100. A main shaft;
200. the device comprises a fixing unit, a disc body, 202, a long hole, 203, a movable seat, 204, a roller body, 205, a support body, 206, a rolling body, 207, a clamping plate I, 208, a clamping plate II, 209, a pipe body and 210 and a pull column;
300. a lifting unit;
400. The power unit, 401, the movable ring, 402, the oil cylinder, 403, the pull ring, 404, the connecting frame, 405, the elastomer, 406, the oil supply and discharge path, 407, the transmission ring, 408, the power motor, 409, the first transmission wheel, 410 and the second transmission wheel;
500. the device comprises a frame, 501 a main motor, 502 and a power wheel.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples illustrate the invention but are not intended to limit the scope thereof.
As shown in fig. 1 to 5, a machine tool structure for fixing a spindle by avoiding, according to the present invention, is mounted on a machine tool, fixes a spindle 100, and includes:
The fixing unit 200 clamps one end of the main shaft 100 and comprises a disc body 201 and a plurality of press groups, wherein the plurality of press groups are distributed on the end face of the disc body 201 around the axis of the disc body 201 and can be mutually close to or separated from each other, each press group comprises a plurality of roller bodies 204, the roller bodies 204 extrude and fix the main shaft 100, and the roller bodies 204 rotate at least in a part of the section where the roller bodies 204 move and drive the main shaft 100 to rotate;
A lifting unit 300 for lifting the other end of the spindle 100;
a power unit 400 for powering the movement of the roller 204;
wherein, the tray 201 and the lifting unit 300 are both fixed on the machine tool, and the power unit 400 is disposed on the tray 201.
The fixing unit 200 and the lifting unit 300 are utilized to support and fix two ends of the spindle 100, and of course, the lifting unit 300 mainly plays an auxiliary role, in some embodiments, the lifting unit 300 may not be provided, or directly lift the end of the spindle 100 by using tugboats, or adopt a mode that a plurality of tugboats are annularly distributed around the end of the spindle 100 and clamp the spindle 100, etc., which is not described herein;
the fixing unit 200 and the lifting unit 300 are required to be mounted on a machine tool and used in cooperation with a cutter and other structures on the machine tool;
When the main shaft 100 is fixed, the power unit 400 can push the multiple groups of press groups to be close to each other, the multiple groups of press groups clamp and fix one end of the main shaft 100 between the multiple groups of press groups, the main shaft 100 is driven to rotate by utilizing the rotation motion of the roller body 204, and the purpose of machining is realized, at the moment, the position of the roller body 204 is unchanged, namely, the gap position between two adjacent groups of press groups is unchanged, and a cutter on a machine tool can extend to the outer wall of the main shaft 100 through the gap and realize the purpose of machining, so that the avoidance work between the cutter and the press groups is realized, the stability and the firmness of clamping are ensured, and the purpose of exposing and machining a clamping position or a shielding part of the clamping position close to one side of the disc 201 is realized;
In actual use, the size of the gap between two adjacent groups of pressing groups, the distribution position relation between a plurality of groups of pressing groups, the position of the gap for a cutter to pass through and the like can be set according to the requirements, and as the gap is provided with a plurality of positions, the cutter can be allowed to realize the purpose of processing the gap at different positions, and as the pressing groups are unchanged in position when clamping the main shaft 100, the phenomenon that the pressing groups collide with the cutter is avoided, the avoidance effect is realized, the setting of the disc body 201 mainly aims at providing the installation position and the axis reference for a plurality of groups of pressing groups, namely, in order to improve the processing precision, the positions of the main shaft 100 can be limited by the axis position of the disc body 201, so that the axis of the disc body 201 coincides with the axis of the main shaft 100 when clamping the main shaft 100, namely, the movement form of the pressing groups on the end surface of the disc body 201 can adopt synchronous movement or asynchronous movement, namely, as long as the main shaft 100 can be clamped at the position coaxial with the disc body 201, the movement form when approaching or far from the axis of the disc body 201 can adopt the radial direction of the end surface of the disc body 201, the radial direction of the disc body 201 can be realized, and the movement form of the disc body can be bent in the radial direction of the disc body 201 can be realized, and the radial direction of the disc body is bent in the radial direction of the disc 201, and the movement form can be more than the radial movement form of the disc 201 is more than the case, and the movement form of the disc 201 can be more convenient in the case when the disc body is positioned in the radial direction of the axial direction of the disc 201 and has the movement mode and the movement mode is in the axial direction of the disc is in the case;
The main shaft 100 is assembled to the main shaft box and other positions, the flange on the main shaft 100 is required to be assembled, a certain distance exists between the flange and the end face of the main shaft 100, and the area is blocked by the chuck in the traditional machining mode, so that the main shaft 100 is not easy to machine;
It should be noted that, because the roller 204 needs to drive the spindle 100 to rotate, the axis of the roller 204 is parallel to the axis of the spindle 100, and multiple groups of press sets are distributed annularly around the axis of the disc 201;
Through utilizing a plurality of press packs that contain roll body 204 to fix main shaft 100, can guarantee to press the group and allow main shaft 100 to carry out rotary motion under the stationary condition to satisfy the processing requirement, simultaneously this kind of mode can utilize the space between two adjacent press groups to allow the cutter on the lathe to pass, thereby press the partial main shaft 100 that shelters from between the group to the multiunit press group to process, realize press group and cutter dodge each other the mode, and need not to change the position with main shaft 100 and process like traditional mode, simplify the mode of processing, improve the processing convenience, and this kind of mode has avoided producing indentation and damage risk on the clamping position of main shaft 100.
The number of press sets is at least three, the coverage area in the circumferential direction is larger than that of a semicircle, the number of the roller bodies 204 in the press sets is at least two, the axes of the roller bodies 204 are parallel to each other, the stable and centered clamping work of the spindle 100 can be realized by setting the number of the press sets and the coverage area, of course, the press sets can be uniformly or unevenly distributed in the circumferential direction, as long as enough gaps can be provided for the cutter to pass through, and if the gaps between two adjacent press sets are larger, the positions with larger gaps can be set to be common or basic processing positions when other gaps are smaller, the number of the roller bodies 204 can be set to enable more contact positions to exist between the press sets and the spindle 100, so that the clamping stability can be improved, acting force between each roller body 204 and the spindle 100 can be reduced, the spindle 100 can be conveniently protected, and of course, the number of the roller bodies 204 cannot influence the size of the gaps between the two adjacent press sets, and the axes of the roller bodies 204 can be parallel, so that at least one roller body 204 can be allowed to provide power for the spindle 100.
Further, the pressing groups move along the radial direction of the end face of the disc 201, and by enabling each pressing group to move along the radial direction of the end face of the disc 201, the moving position, speed and the like of the disc 201 can be conveniently and synchronously controlled, so that the axis of the spindle 100 can be conveniently positioned, meanwhile, the pressing groups move in a manner that the disc 201 is more conveniently machined, and compared with the problems of large machining difficulty and high cost of the disc 201 caused by other movement manners such as curves, arcs, inclinations and the like, the advantages of the manner are more outstanding and obvious.
Since the roller 204 in the press set can only fix the circumferential direction of the spindle 100 and the roller 204 rotates relative to the spindle 100, it cannot limit the axial direction of the spindle 100, and some special arrangements are added here to achieve the limiting function, as shown in fig. 5, the press set further includes a side press part, which positions the spindle 100 in its own axial direction;
The side pressure part comprises two supporting bodies 205, and a plurality of rolling bodies 206 which are contacted with the main shaft 100 are arranged on the supporting bodies 205;
The side pressure part limits the axial direction of the main shaft 100 through the rolling bodies 206, and the specific limiting positions are generally positioned on two end surfaces of a flange on the main shaft 100, so that the interference to the processing position of the main shaft 100 is avoided, the supporting bodies 205 mainly support a plurality of the rolling bodies 206, the supporting bodies 205 can adopt structural modes such as plates, frames and frames, the rolling bodies 206 can adopt structural modes such as balls, columns and cones, and the structural modes are all in the protection range;
It should be noted that, the rolling elements 206 may be specifically mounted on the supporting body 205 through a bearing, a copper sleeve, a clamping wheel, etc., so long as the rolling elements 206 can rotate on the supporting body 205, and the rolling elements 206 have an anti-friction effect, and the specific mounting manner is within the protection scope of the present disclosure.
As shown in fig. 5, the shape of the rolling element 206 is a frustum, when the roller 204 is at the working position, the conical tip of the rolling element 206 is coincident with the axis of the disc 201, and the above structural mode is directly related to the layout mode of the rolling elements 206, so the layout mode of the rolling elements 206 on the supporting body 205 is not limited, namely, any layout mode meeting the above requirements is only limited, and the rotational linear speed of each part on the outer wall of the rolling element 206 can be limited by the structural mode, namely, when the roller 204 fixes the spindle 100, the rotational linear speed of any part on the spindle 100 in contact with the outer wall of the rolling element 206 can be the same as the rotational linear speed of the rolling element 206, so that the rolling element 206 and the spindle 100 can synchronously move relatively without generating relative friction with the position on the rolling element 206, and the layout limitation of the rolling elements 206 on the supporting body 205 can be reduced, namely, if the layout mode of the rolling elements 206 is allowed to be misplaced, the arc layout mode and the like can not meet the relative friction;
It should be noted that, except for the arrangement that the plurality of rolling bodies 206 on the supporting body 205 are in an arc shape, and the center of the arc is coincident with the axis of the disc 201, other arrangements may cause the shapes and sizes of the plurality of rolling bodies 206 to be inconsistent, in some cases, the shapes and sizes of the plurality of rolling bodies 206 may be allowed to be different, and in a common manner, the plurality of rolling bodies 206 may be processed in a manner of the same structure and size for convenience of processing and cost reduction, which is not described herein.
The specific assembly mode of the support body 205 and the rolling body 206 is shown in fig. 5, the support body 205 comprises a clamp plate I207 and a clamp plate II 208, the center of the rolling body 206 is positioned between the clamp plate I207 and the clamp plate II 208, the clamp plate I207 and the clamp plate II 208 are provided with openings, at least part of the outer wall of the rolling body 206 is exposed out of the support body 205 through the openings, the clamp plate I207 and the clamp plate II 208 are in fastening connection, the rolling body 206 can be supported and fixed by the clamp plate I207 and the clamp plate II 208, the rolling body 206 can be ensured to rotate stably on the support body 205, in particular, in order to limit the clamping position of the rolling body 206, the openings need to be formed into an arc shape, namely, the arc is used for wrapping and limiting the outer wall of the rolling body 206, only part of the outer wall of the rolling body 206 is allowed to be exposed out of the support body 205, and the butt joint wrapping and fixing mode can limit most of the rolling body 206, so that a firmer fastening effect can be provided for the rolling body 206, the stability of rotation of the rolling body 206 is stronger, and the assembly is more convenient.
In order to realize the fastening connection between the first clamping plate 207 and the second clamping plate 208, specifically, the first clamping plate 207 and the second clamping plate 208 are relatively fixed by at least one mode of bolts, welding, connecting pieces, clamping joints and the like.
Since the two supporting bodies 205 in the side pressure part need to limit the axial direction of the spindle 100, the two supporting bodies 205 need to be capable of approaching to or separating from each other, as shown in fig. 5, the pressing group further comprises a moving seat 203, one supporting body 205 in the side pressure part is fixed on the corresponding moving seat 203, the other supporting body 205 moves along the vertical connecting line direction between the two supporting bodies 205 and limits the position of the spindle 100 in the axial direction thereof, thus when the spindle 100 starts to clamp, the flange position of the spindle 100 is positioned between the two supporting bodies 205, the supporting bodies 205 which allow the movement can be close to the supporting bodies 205 on the moving seat 203, so that the spindle 100 can be clamped by the two supporting bodies 205, and when the spindle 100 needs to be unclamped, the two supporting bodies 205 can be separated;
as shown in fig. 3 and fig. 5, a plurality of long holes 202 are formed on the end surface of the tray 201, the moving seat 203 passes through the long holes 202, and when the moving seat 203 moves in the long holes 202, the moving seat 203 moves along the radial direction of the end surface of the tray 201, and the power unit 400 is located inside the tray 201, so that the power unit 400 can drive the roller 204 to move through the moving seat 203, and other modes can be adopted to achieve the above purpose except for this mode, which is not repeated here.
Since both the roller body 204 and the rolling body 206 act on the flange position of the main shaft 100, the roller body 204 in the press group is located between two supporting bodies 205 in the corresponding side press portion as shown in fig. 5.
As shown in fig. 5, a plurality of tube bodies 209 are inserted into one support body 205 fixed on the movable seat 203 in the side pressure part, each roller body 204 is correspondingly fixed at the end part of the tube body 209, the power unit 400 drives the roller bodies 204 to rotate through the tube bodies 209, pull columns 210 are inserted into each tube body 209 in a sliding manner, the pull columns 210 penetrate through the corresponding roller bodies 204 and are fixed on the other support body 205, and the power unit 400 drives the corresponding support body 205 to move through the pull columns 210; the movable supporting body 205 is supported by utilizing the forms of a plurality of pipe bodies 209 and a plurality of pull columns 210, so that the rotation of the supporting body 205 can be synchronously limited, namely, only the supporting body 205 is allowed to move linearly, but other forms of movement can not be performed, the effect of providing power for the movement of the supporting body 205 is realized, and the effect of limiting the alignment movement mode is also realized;
It should be noted that, the tube 209 is in a rotational connection with at least one of the first clamping plate 207 and the second clamping plate 208 on the corresponding support 205, and the pull column 210 may be in a fixed connection with the first clamping plate 207 or the second clamping plate 208 on the movable support 205.
Further, as shown in FIG. 4, the power unit 400 comprises a moving ring 401 positioned on the inner side of the tray 201 and an oil cylinder 402 positioned on the inner side of the tray 201 and used for providing power for the movement of the moving ring 401, the moving ring 401 is in transmission connection with each moving seat 203, when the moving ring 401 moves, the plurality of moving seats 203 are mutually close to or separated from each other, the oil cylinder 402 is used for providing power for the movement of the moving ring 401 so as to synchronously provide power for the movement of the plurality of moving seats 203, thus the plurality of moving seats 203 can be conveniently synchronously controlled, the purpose of the movement of the plurality of moving seats 203 can be realized through one power source, the complicated operation of the power source is not needed to be arranged for each moving seat 203, and meanwhile, the synchronous movement of the plurality of moving seats 203 can be improved by adopting the structural mode, and the positioning precision of the axis of the spindle 100 is further improved;
It should be noted that the transmission relationship between the moving ring 401 and each moving seat 203 may be any form of lever transmission, hydraulic transmission, gear/rack transmission, slope transmission, etc., which are all within the scope of protection as long as the present disclosure can be achieved.
In order to simplify the structure, the movable ring 401 is coaxial with the disc 201, the movable ring 401 moves along the axis direction of the movable ring 401, the end surface of the movable ring 401 facing the movable seat 203 is set to be a conical surface, the end surface of the movable seat 203 facing the movable ring 401 is set to be a slope surface matched with the conical surface of the movable ring 401, when the movable ring 401 moves, the movable seat 203 can be pushed to be close to or far away from the axis of the disc 201 by utilizing the conical surface and the slope surface between the movable ring 401 and the movable seat 203, so that the purpose of driving a plurality of movable seats 203 to move is achieved, and as the movable ring 401 needs to drive the movable seat 203 to move in two directions, the movable ring 401 and the movable seat 203 need to keep a connection state, a plurality of sliding grooves can be formed in the direction of the conical surface of the movable ring 401, sliding edges are arranged on the slope surface of the movable seat 203, and the sliding grooves and the sliding edges can be connected in a sliding manner, and the movable ring 401 and the movable seat 203 can be connected in other manners, so long as the purpose can be achieved.
As shown in fig. 4 and 6, the power unit 400 further includes a pull ring 403 located inside the moving ring 401 and connected to each pull column 210, the pull ring 403 is connected to the fixed end of each oil cylinder 402 through a connecting frame 404, the fixed end of the oil cylinder 402 is connected to the tray 201 through an elastomer 405, the elastomer 405 provides elastic supporting force for the oil cylinder 402, and the connecting frame 404 is slidably disposed in the tray 201; the sliding direction of the connecting frame 404 can be seen along the axial direction of the disc 201 through the movement modes of the moving ring 401 and the oil cylinder 402, the connecting frame 404 can provide support for the oil cylinder 402, the moving ring 401 and the pull ring 403 to ensure that the structure operates normally, the moving ring 401 can be installed on the inner wall of the disc 201 in a sliding manner to enhance the stability of the structure operation, when the oil cylinder 402 stretches, the moving ring 401 can be directly pushed to move so as to drive a plurality of moving seats 203 and the roller body 204 to approach each other and fix the main shaft 100, when the roller body 204 finishes fixing the main shaft 100, the roller body 204 does not move any more, at the moment, the moving ring 401 stops moving, the oil cylinder 402 can continue to stretch, then the fixed end of the oil cylinder 402 can move in a manner of compressing the elastomer 405, namely, the fixed end of the oil cylinder 402 can move and the pull ring 403 can move in the opposite direction to the movement direction of the oil cylinder 402, and the pull ring 403 pulls the pull column 210 and the corresponding support 205, so that a power source can be directly pushed by the oil cylinder 402 to provide power for the movement of the roller body 204 and the movement of the support 205, and the roller body 205 can only move in a differential time, therefore, the purpose of the roller body is realized by the simple structure, and the invention can be realized by the simple structure, the functionality is strong;
It should be noted that the number of the oil cylinders 402 and the matched structures thereof is not limited, and the oil cylinders can be set and assembled according to practical situations, and detailed description is omitted herein;
A supply and drain oil path 406 may be assembled on the disc 201 to provide power for the telescopic movement of the oil cylinder 402, and a specific structure of the supply and drain oil path 406 may be a conventional structure.
As shown in fig. 4 and 6, the power unit 400 further includes a driving ring 407 and a power motor 408 disposed in the disc 201, a first driving wheel 409 meshed with the driving ring 407 is disposed at an output end of the power motor 408, a second driving wheel 410 meshed with the driving ring 407 is disposed on each tube 209, the driving ring 407 rotates in the disc 201, the driving ring 407 can be driven to rotate by using the power motor 408 and the first driving wheel 409, and then a plurality of second driving wheels 410 are driven to rotate by the driving ring 407, so that rotational power is provided for each roller 204, and the spindle 100 can perform rotational motion.
In the above embodiment, since the moving seat 203 and the roller 204 can only move along the specified direction, the gap between the two adjacent pressing groups is fixed, and in actual production, the cutter processing position is movable, so that in order to adapt to production, the gap position needs to be set in an adjustable form, specifically, as shown in fig. 1, a frame 500 for supporting the tray 201 is arranged on the outer side of the tray 201, the tray 201 is relatively fixed on a machine tool through the frame 500, the tray 201 rotates on the frame 500, a main motor 501 and a power wheel 502 for providing power for rotation of the tray 201 are arranged on the frame 500, specifically, the main motor 501 can be mounted on the frame 500, the power wheel 502 is mounted on the output end of the main motor 501, and the power wheel 502 is in transmission connection with the outer wall of the main motor 501.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. The utility model provides a machine tool structure of fixed main shaft of dodging which characterized in that installs on the lathe, fixes the main shaft, includes:
The fixing unit is used for clamping one end of the main shaft and comprises a disc body and a plurality of pressing groups, the pressing groups are distributed on the end face of the disc body around the axis of the disc body, the pressing groups can be mutually close to or separated from each other, the pressing groups comprise a plurality of roller bodies, the roller bodies are used for fixing the main shaft in an extrusion mode, and the roller bodies rotate at least in a part of the moving section of the roller bodies and drive the main shaft to rotate;
A lifting unit for lifting the other end of the main shaft;
the power unit is used for providing power for the movement of the roller body;
Wherein the tray body and the lifting unit are both fixed on a machine tool, and the power unit is arranged on the tray body;
the pressing group moves along the radial direction of the end face of the disc body;
the pressing group further comprises a side pressing part, and the side pressing part positions the main shaft in the axis direction of the main shaft;
the side pressure part comprises two supporting bodies, and a plurality of rolling bodies contacted with the main shaft are arranged on the supporting bodies;
The pressing group further comprises a movable seat;
One supporting body in the side pressure part is fixed on the corresponding moving seat, and the other supporting body moves along the vertical connecting line direction between the two supporting bodies and limits the position of the main shaft in the self axis direction;
The side pressure portion is fixed on one support body on the movable seat and is provided with a plurality of tube bodies in an inserting mode, each roller body is correspondingly fixed at the end portion of each tube body, the power unit drives the roller bodies to rotate through the tube bodies, pull columns are inserted in each tube body in a sliding mode, the pull columns penetrate through the corresponding roller bodies and are fixed on the other support body, and the power unit drives the corresponding support body to move through the pull columns.
2. The machine tool structure of claim 1, wherein the number of press groups is at least three, the coverage area of the press groups in the circumferential direction of the disc body is larger than a semicircle, the number of the roller bodies in the press groups is at least two, and the axes of the roller bodies are parallel to each other.
3. The machine tool structure of claim 1, wherein the rolling bodies are in a truncated cone shape, and when the rolling bodies are in the working position, the conical tips of the rolling bodies coincide with the axis of the disc body.
4. The machine tool structure for fixing a spindle in a dodge manner according to claim 1, wherein the disc body is hollow;
The power unit comprises a movable ring which is positioned on the inner side of the disc body in a sliding manner and an oil cylinder which is positioned on the inner side of the disc body and provides power for the movement of the movable ring, the movable ring is in transmission connection with each movable seat, and when the movable ring moves, a plurality of movable seats are mutually close to or separated;
The movable ring is coaxial with the disc body, the movable ring moves along the axis direction of the movable ring, the end face of the movable ring, which faces the movable seat, is set to be a conical surface, and the end face of the movable seat, which faces the movable ring, is set to be a sloping surface matched with the conical surface of the movable ring.
5. The machine tool structure of claim 4, wherein the power unit further comprises a pull ring located inside the moving ring and connected with each pull column, the pull ring is connected with the fixed end of each oil cylinder through a connecting frame, the fixed end of each oil cylinder is connected with the disc body through an elastomer, the elastomer provides elastic supporting force for the oil cylinder, and the connecting frame is slidably arranged in the disc body.
6. The machine tool structure of an avoidance type fixed spindle according to claim 1, wherein a frame for supporting the disc body is arranged on the outer side of the disc body, the disc body is relatively fixed on the machine tool through the frame, the disc body rotates on the frame, and a main motor and a power wheel for providing power for rotation of the disc body are arranged on the frame.
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| CN202510409124.3A CN119910211B (en) | 2025-04-02 | 2025-04-02 | A machine tool structure with avoidance fixed spindle |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212191293U (en) * | 2020-05-15 | 2020-12-22 | 莱芜双林机械制造有限公司 | Roll lathe processing frock |
| CN219310120U (en) * | 2022-12-21 | 2023-07-07 | 济南文文数控机械有限公司 | Adjustable claw head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214814931U (en) * | 2021-05-11 | 2021-11-23 | 东莞奥嘉德精密金属科技有限公司 | A clamping device for machining shaft parts |
| CN217570914U (en) * | 2022-05-18 | 2022-10-14 | 嘉兴市智刃机械设备有限公司 | Special lathe for machining flange plate |
| CN219925215U (en) * | 2023-05-04 | 2023-10-31 | 昆山成源丰机电设备有限公司 | Machining center fixture |
| CN220312543U (en) * | 2023-07-12 | 2024-01-09 | 山东顺发重工有限公司 | Vertical drilling machine supporting seat for flange drilling |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212191293U (en) * | 2020-05-15 | 2020-12-22 | 莱芜双林机械制造有限公司 | Roll lathe processing frock |
| CN219310120U (en) * | 2022-12-21 | 2023-07-07 | 济南文文数控机械有限公司 | Adjustable claw head |
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