CN223368761U - Automatic centering center frame for CNC machine tools - Google Patents
Automatic centering center frame for CNC machine toolsInfo
- Publication number
- CN223368761U CN223368761U CN202422831977.XU CN202422831977U CN223368761U CN 223368761 U CN223368761 U CN 223368761U CN 202422831977 U CN202422831977 U CN 202422831977U CN 223368761 U CN223368761 U CN 223368761U
- Authority
- CN
- China
- Prior art keywords
- bracket
- self
- machine tool
- center frame
- centering
- 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.)
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Abstract
本实用新型涉及一种数控机床自动定心中心架，包括支架、设置在支架上的自定心组件，支架与自定心组件之间转动连接有三个夹臂，支架上开设有孔，夹臂沿孔的边缘位置周向阵列分布，自定心组件用于带动三个夹臂同步向孔的中心靠拢或远离，支架上设有驱动装置，驱动装置用于驱动自定心组件转动，通过驱动装置驱动自定心组件转动，再通过自定心组件带动三个夹臂同步向中心靠拢或远离，从而使工件自动与主轴同心，不仅能够增强工件的刚性和切削的稳定性，减少加工误差，还减少了人工操作，降低了加工成本，大大提高了生产效率。
The utility model relates to an automatic centering center frame for a numerically controlled machine tool, comprising a bracket and a self-centering component arranged on the bracket, three clamping arms being rotatably connected between the bracket and the self-centering component, a hole being opened on the bracket, the clamping arms being distributed in a circumferential array along the edge of the hole, the self-centering component being used to drive the three clamping arms to synchronously approach or move away from the center of the hole, a driving device being provided on the bracket, the driving device being used to drive the self-centering component to rotate, the self-centering component being driven to rotate by the driving device, and then the three clamping arms being driven to synchronously approach or move away from the center by the self-centering component, thereby making the workpiece automatically concentric with the main shaft, which can not only enhance the rigidity of the workpiece and the cutting stability, reduce machining errors, but also reduce manual operations, reduce machining costs, and greatly improve production efficiency.
Description
Technical Field
The utility model relates to the technical field of center frames, in particular to an automatic centering center frame of a numerical control machine tool.
Background
The center frame is an auxiliary device for radially supporting a rotary workpiece in the machining process, is usually fixed on a machine tool body guide rail and is provided with three supporting claws which are independently moved, the supporting claws can be contacted with a workpiece supporting surface through adjustment, and the supporting claws are adjusted to be appropriate in tightness so as to increase the rigidity of the workpiece and facilitate cutting machining, and the center frame is designed to solve the problem of machining a longer workpiece, especially the machining of slender shaft parts, and reduce the bending or deformation possibly occurring in the machining process of the workpiece through increasing the rigidity of the workpiece.
The traditional center frame generally adopts two-point or three-point support, and through manual adjustment of each supporting rod, the purpose concentric with the main shaft is achieved, the adjustment precision of the center frame depends on experience and hand feeling of technical workers, the mode is unreliable, the precision and the efficiency are low, and the requirements of numerical control machine tool processing on high precision and high efficiency cannot be met.
Disclosure of utility model
Aiming at the defects existing in the prior art, the utility model aims to provide an automatic centering center frame of a numerical control machine tool.
The automatic centering center frame of the numerical control machine tool comprises a support and a self-centering assembly arranged on the support, wherein three clamping arms are rotatably connected between the support and the self-centering assembly, holes are formed in the support, the clamping arms are circumferentially distributed in an array along the edge positions of the holes, the self-centering assembly is used for driving the three clamping arms to synchronously approach or separate from the center of the holes, and a driving device is arranged on the support and is used for driving the self-centering assembly to rotate.
Preferably, the self-centering assembly comprises a support ring fixedly connected with the bracket, a synchronizing ring is rotationally connected to the support ring, a guide groove is formed in the synchronizing ring, and a pin matched with the guide groove is arranged on the clamping arm.
Preferably, the driving device comprises a hydraulic cylinder arranged on the bracket, and the output end of the hydraulic cylinder is hinged with the synchronizing ring.
Preferably, the clamping arms are of arc-shaped structures, and avoidance grooves are formed in the positions, corresponding to the clamping arms, of the supporting ring and the synchronizing ring.
Preferably, one end of the clamping arm is rotatably provided with a roller.
Preferably, the positions of the support and the support ring corresponding to the rollers are provided with accommodating grooves.
Preferably, a notch corresponding to the machine tool guide rail is formed in the bottom of the support, and a bottom plate is connected to the lower side of the support through bolts.
The self-centering device has the beneficial effects that the self-centering assembly is driven to rotate by the driving device, and the three clamping arms are driven to synchronously approach to the center or separate from the center by the self-centering assembly, so that a workpiece is automatically concentric with the main shaft, the rigidity and the cutting stability of the workpiece can be enhanced, the machining error can be reduced, the manual operation can be reduced, the machining cost can be reduced, and the production efficiency can be greatly improved.
Drawings
The utility model will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the utility model, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
Fig. 1 is a schematic structural view of an automatic centering frame of a numerical control machine tool.
Fig. 2 is a schematic diagram of a support structure of an automatic centering frame of a numerical control machine tool.
Fig. 3 is a schematic structural diagram of a self-centering assembly of the automatic centering frame of the numerical control machine tool.
Fig. 4 is a schematic diagram of a supporting ring structure of an automatic centering frame of a numerical control machine tool.
Fig. 5 is a schematic diagram of a synchronous ring structure of an automatic centering frame of a numerical control machine tool.
The reference numerals in the figure are 1, a bracket, 101, a notch, 102, a bolt, 103, a bottom plate, 2, a self-centering assembly, 201, a supporting ring, 202, a synchronizing ring, 203, a guide groove, 204, a avoiding groove, 205, a containing groove, 3, a clamping arm, 301, a pin, 302, a roller and 4, and a hydraulic cylinder.
Detailed Description
It should be noted that, if directional indications (such as up, down, left, right, front, and rear are referred to in the embodiments of the present utility model), the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The technical solutions of the present utility model will be clearly and completely described below in conjunction with specific embodiments, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
Referring to figures 1 to 5, the automatic centering frame of the numerical control machine tool comprises a bracket 1 and a self-centering assembly 2 arranged on the bracket 1, wherein three clamping arms 3 are rotationally connected between the bracket 1 and the self-centering assembly 2, holes are formed in the bracket 1, the clamping arms 3 are circumferentially distributed along the edge positions of the holes, the self-centering assembly 2 is used for driving the three clamping arms 3 to synchronously close to or separate from the centers of the holes, a driving device is arranged on the bracket 1 and is used for driving the self-centering assembly 2 to rotate, specifically, the self-centering assembly 2 is driven to rotate through the driving device, the three clamping arms 3 are synchronously close to the centers of the holes through the self-centering assembly 2, the axes of a main shaft are automatically aligned while the workpiece is clamped, the efficiency of finding the center of the workpiece is improved, the rigidity and the cutting stability of the workpiece are enhanced, and the machining error is reduced . A
As shown in fig. 2 to 5, the self-centering assembly 2 includes a support ring 201 fixedly connected with the support 1, a synchronizing ring 202 is rotatably connected to the support ring 201, a guide groove 203 is provided on the synchronizing ring 202, pins 301 matched with the guide groove 203 are provided on the clamping arms 3, specifically, three clamping arms 3 are rotatably arranged between the support ring 201 and the support 1, and the synchronizing ring 202 is rotated to cooperate with the pins 301 through the guide groove 203, so as to drive the three clamping arms 3 to rotate and synchronously approach or separate toward the center.
As shown in fig. 1 and 2, the driving device comprises a hydraulic cylinder 4 arranged on the bracket 1, wherein the output end of the hydraulic cylinder 4 is hinged with the synchronizing ring 202, and specifically, the hydraulic cylinder 4 is used for driving the synchronizing ring 202 to rotate, so as to drive the clamping arm 3 to clamp a workpiece and automatically align the workpiece.
As shown in fig. 4 and 5, the clamp arms 3 are arc-shaped structures, the positions, corresponding to the clamp arms 3, on the supporting ring 201 and the synchronizing ring 202 are provided with avoiding grooves 204, and specifically, when the three clamp arms 3 are opened, the clamp arms 3 with arc-shaped structures can be stored into the avoiding grooves 204, so that the movement of the clamp arms 3 can be prevented from being limited, and the center frame can adapt to workpieces with larger diameters.
As shown in fig. 2 and 3, a roller 302 is rotatably disposed at one end of the arm 3, and specifically, the roller 302 can reduce friction resistance with the workpiece, and prevent the surface of the workpiece from being scratched during processing.
As shown in fig. 2 and 4, the bracket 1 and the supporting ring 201 are provided with accommodating grooves 205 corresponding to the rollers 302, and specifically, the accommodating grooves 205 are used for accommodating the rollers 302 when the clamping arms 3 are opened, so that the center frame can further adapt to workpieces with larger diameters.
As shown in fig. 2, a notch 101 corresponding to a machine tool guide rail is formed at the bottom of the bracket 1, a bottom plate 103 is connected to the lower side of the bracket 1 through a bolt 102, specifically, the notch 101 on the bracket 1 is aligned with the guide rail, the installation position of the bracket 1 is adjusted and corrected through the notch 101, the stability and accuracy are ensured, and then the bolt 102 is screwed down, so that the bottom plate 103 clamps the lathe bed at the bottom of the machine tool guide rail, and the bracket 1 is firmly fixed on the machine tool.
When the automatic centering device is specifically used, the bracket 1 is arranged on the machine tool guide rail, then a workpiece passes through a hole in the bracket 1 and is clamped on a main shaft on the machine tool, the self-centering assembly 2 is driven to rotate by the driving device, the three clamping arms 3 are driven to synchronously close to the center of the hole by the self-centering assembly 2, and the workpiece is clamped and simultaneously automatically aligned with the axis of the main shaft, so that the workpiece is supported, the rigidity and the cutting stability of the workpiece are enhanced, and the machining error is reduced.
The utility model has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the utility model, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422831977.XU CN223368761U (en) | 2024-11-20 | 2024-11-20 | Automatic centering center frame for CNC machine tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422831977.XU CN223368761U (en) | 2024-11-20 | 2024-11-20 | Automatic centering center frame for CNC machine tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223368761U true CN223368761U (en) | 2025-09-23 |
Family
ID=97095684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422831977.XU Active CN223368761U (en) | 2024-11-20 | 2024-11-20 | Automatic centering center frame for CNC machine tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223368761U (en) |
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2024
- 2024-11-20 CN CN202422831977.XU patent/CN223368761U/en active Active
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