A machining center main shaft with a grabbing device and a machining center

Abstract

The utility model provides a kind of machining center main shaft and machining center of additional gripping device, including the main shaft body movable along height direction, the side wall of main shaft body is provided with first installation site, and the first installation site is fixedly installed with processing object gripping device, and processing object gripping device displaces with main shaft body synchronously;The processing object gripping device includes processing object clamping mechanism and its lifting device, and processing object clamping mechanism is driven by lifting device and moves along height direction, and the lifting device is fixed on the first installation site.The workpiece of the utility model is grabbed without depending on external manipulator, and without changing the internal structure of main shaft body, effectively solve the problems, such as complex system structure, cost escalation and maintenance difficulty caused by adding special gripping device in prior art, improve equipment utilization, so as to reduce manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a machining center spindle and machining center equipped with a gripping device. Background Technology

[0002] With the rapid development of the 3C industry (computer, communication, and consumer electronics), electronic products such as mobile phones, laptops, and smartwatches are placing increasingly higher demands on the processing precision and production efficiency of their components. CNC (Computer Numerical Control) machining technology, due to its high degree of automation, precision machining capabilities, and excellent flexible manufacturing characteristics, has been widely applied in the precision machining of 3C product components.

[0003] Traditional machining centers use spindles solely to drive cutting tools, requiring external robotic arms or manual operation for workpiece gripping, which is insufficient for mass production needs. Manual external clamping during the initial trial phase was time-consuming, labor-intensive, and consumed significant human resources. Adding dedicated gripping devices (such as hydraulic or electric drive mechanisms) introduces new challenges, including system complexity, increased costs, and maintenance difficulties. While some existing improvement solutions attempt to integrate clamping functionality into the spindle, these often require structural modifications, potentially affecting the spindle's original cutting rigidity and dynamic performance, posing risks to machining quality.

[0004] Based on the above, this utility model proposes a machining center spindle and machining center equipped with a gripping device, which can effectively solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the first objective of this invention is to provide a machining center spindle equipped with a gripping device. This invention allows for workpiece gripping without relying on an external robotic arm and without requiring modifications to the internal structure of the spindle body. It effectively solves the problems of complex system structure, increased costs, and maintenance difficulties caused by adding a dedicated gripping device in existing technologies, thereby improving equipment utilization and reducing manufacturing costs.

[0006] This utility model provides a machining center spindle equipped with a gripping device, including a spindle body movable along the height direction, a first mounting position provided on the side wall of the spindle body, and a workpiece gripping device fixedly mounted on the first mounting position. The workpiece gripping device moves synchronously with the spindle body. The workpiece gripping device includes a workpiece clamping mechanism and a lifting device. The workpiece clamping mechanism is driven by the lifting device to move along the height direction, and the lifting device is fixed on the first mounting position.

[0007] In one embodiment, a fixed bracket is installed on the first mounting position, and the object gripping device is mounted on the spindle body via the fixed bracket.

[0008] In one embodiment, the fixed bracket includes a spindle connecting plate and a fixing plate arranged perpendicularly to each other; a first end of the spindle connecting plate is connected to the bottom of the spindle body, and a second end extends outward beyond the bottom of the spindle body; the fixing plate is vertically connected to the second end of the spindle connecting plate, its back side is attached to and fixed to the side wall of the spindle body, and its front side is used to install the processing object gripping device.

[0009] In one embodiment, the lifting device includes a linear drive device and a linear guide structure; wherein the output end of the linear drive device is drivenly connected to the workpiece clamping mechanism, and the workpiece clamping mechanism is simultaneously connected to the linear guide structure, thereby realizing the constrained linear motion of the workpiece clamping mechanism.

[0010] In one embodiment, the linear guide structure includes a slide rail and a slider, which are slidably connected and arranged vertically; the workpiece clamping mechanism is fixedly connected to the slide rail, and the slider is fixed to the side wall of the spindle body.

[0011] In one embodiment, the workpiece clamping mechanism includes a guide structure connecting plate, a workpiece clamping and fixing block, and a clamping drive device; a first side of the guide structure connecting plate is connected to the lifting device, and a second side is connected to the clamping drive device; the output end of the clamping drive device is drivenly connected to the workpiece clamping and fixing block.

[0012] In one embodiment, the workpiece clamping mechanism is configured such that, when driven to the maximum extension position by the lifting device, it is lower than the lowest machining end face of the spindle body in the height direction; and when driven to the minimum extension position by the lifting device, it is higher than the lowest machining end face of the spindle body in the height direction.

[0013] The second objective of this utility model is to provide a machining center, including a workpiece clamping fixture and a four-axis device. The workpiece clamping fixture is mounted on the four-axis device. The machining center also includes a machining center spindle equipped with a gripping device as described above. The four-axis device is mounted on a movable machine base. A second mounting position is provided on the four-axis device, and a storage tray is fixedly mounted on the second mounting position. The workpiece gripping device is located on the upper part of the storage tray and the workpiece clamping fixture.

[0014] In one embodiment, the four-axis device is configured to have a first working position and a second working position; the first working position positions the workpiece in the storage tray directly below the workpiece gripping device; the second working position positions the workpiece fixing position of the workpiece clamping fixture directly below the workpiece gripping device.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention is particularly suitable for the automation transformation of CNC machining equipment and can be widely applied to the processing of components for 3C electronic products (such as mobile phones, computers, and watches). The workpiece gripping of this invention does not rely on an external robotic arm and requires no modification to the internal structure of the spindle body. It effectively solves the problems of complex system structure, increased costs, and difficult maintenance caused by adding a dedicated gripping device in existing technologies, thereby improving equipment utilization and reducing manufacturing costs.

[0017] This invention cleverly utilizes the spindle body's own movement characteristics in the Z-axis direction, enabling the gripping device to move synchronously with the spindle body. This eliminates the need for an additional lifting system, effectively simplifying the overall structure and improving system integration. Furthermore, the gripping device is mounted on the side wall of the spindle body via an external rigid support, without altering the spindle body's internal structure or affecting its transmission system. This preserves the spindle body's original rotation and machining functions, ensuring its machining performance remains unaffected. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional schematic diagram of the workpiece gripping device provided in this embodiment of the present invention gripping a workpiece from a storage tray;

[0020] Figure 2 A three-dimensional schematic diagram of the workpiece being transferred to the clamping fixture by the workpiece gripping device provided in this embodiment of the utility model;

[0021] Figure 3 A three-dimensional schematic diagram of milling machining performed by switching spindle tools according to an embodiment of this utility model;

[0022] Figure 4 A three-dimensional structural schematic diagram of the spindle provided in an embodiment of this utility model;

[0023] Figure 5 A bottom view of the spindle provided in an embodiment of this utility model;

[0024] Figure 6 Exploded view of the object-grabbing device provided in the embodiment of this utility model;

[0025] Figure 7 A three-dimensional schematic diagram of the movable machine provided in the embodiment of this utility model.

[0026] Reference numerals: 1-Spindle body; 2-Workpiece gripping device; 3-Lifting device; 4-Workpiece clamping mechanism; 5-Fixed bracket; 6-Spindle connecting plate; 7-Fixed plate; 8-Linear drive device; 9-Slide rail; 10-Slider; 11-Guide structure connecting plate; 12-Workpiece clamping fixing block; 13-Clamping drive device; 14-Workpiece clamping fixture; 15-Four-axis equipment; 16-Workpiece; 17-Storage tray; 18-Bolt; 19-Movable machine base; 20-Machine base X-axis moving device; 21-Machine base X-axis moving device; 22-Machining center spindle Z-axis moving device. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting the present utility model. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting the present utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0029] like Figure 4 and Figure 5 As shown, a machining center spindle equipped with a gripping device includes a spindle body 1 movable along the height direction. The spindle body 1 is connected to a machining center spindle Z-axis moving device 22 to achieve displacement in the height direction. A first mounting position is provided on the side wall of the spindle body 1, and a machining object gripping device 2 is fixedly installed on the first mounting position. The machining object gripping device 2 moves synchronously with the spindle body 1. The machining object gripping device 2 includes a machining object clamping mechanism 4 and a lifting device 3. The machining object clamping mechanism 4 is driven by the lifting device 3 to move along the height direction. The lifting device 3 is fixed on the first mounting position.

[0030] like Figure 6 As shown, a fixed bracket 5 is installed on the first mounting position, and the processing object gripping device 2 is installed on the spindle body 1 through the fixed bracket 5. The fixed bracket 5 is rigidly connected to the side wall of the spindle body 1 and does not interfere with the rotation of the spindle body 1.

[0031] The object gripping device 2 of this utility model is rigidly fixedly connected to the spindle body 1 to ensure absolute synchronization of the two in spatial movement, and to ensure that the repeatability of the workpiece 16 during gripping and placement can be controlled within ±0.005mm, thus meeting the requirements of high-precision clamping.

[0032] Furthermore, the fixed bracket 5 includes a spindle connecting plate 6 and a fixing plate 7 arranged perpendicularly to each other; the first end of the spindle connecting plate 6 is connected to the bottom of the spindle body 1, and the second end extends outward beyond the bottom of the spindle body 1; the fixing plate 7 is vertically connected to the second end of the spindle connecting plate 6, its back side is attached to and fixed to the side wall of the spindle body 1, and its front side is used to install the processing object gripping device 2. In this embodiment, the spindle connecting plate 6 and the bottom of the spindle body 1 are fixedly connected by bolts 18.

[0033] The lifting device 3 includes a linear drive device 8 and a linear guide structure. The output end of the linear drive device 8 is connected to the workpiece clamping mechanism 4, which is simultaneously connected to the linear guide structure, thereby achieving constrained linear motion of the workpiece clamping mechanism 4. In this embodiment, the linear drive device 8 can be a pen-shaped cylinder, installed vertically with its piston rod pointing downwards in a linear reciprocating motion, driving the workpiece clamping mechanism 4 to achieve vertical displacement.

[0034] The linear guide structure includes a slide rail 9 and a slider 10, which are slidably connected and arranged vertically. The workpiece clamping mechanism 4 is fixedly connected to the slide rail 9, and the slider 10 is fixed to the side wall of the spindle body 1 by a fixing plate 7.

[0035] The workpiece clamping mechanism 4 includes a guide structure connecting plate 11, a workpiece clamping and fixing block 12, and a clamping drive device 13. The first side of the guide structure connecting plate 11 is connected to the lifting device 3, and the second side is connected to the clamping drive device 13. The output end of the clamping drive device 13 is drivenly connected to the workpiece clamping and fixing block 12. The clamping drive device 13 is configured to drive the workpiece clamping and fixing block 12 to perform clamping / releasing actions.

[0036] The workpiece clamping mechanism 4 is configured such that when driven to the maximum extension position by the lifting device 3, it is lower than the lowest processing end face of the spindle body 1 in the height direction; and when driven to the minimum extension position by the lifting device 3, it is higher than the lowest processing end face of the spindle body 1 in the height direction.

[0037] A machining center, such as Figures 1-3As shown, the machining center includes a workpiece clamping fixture 14 and a four-axis device 15. The workpiece clamping fixture 14 is mounted on the four-axis device 15. The machining center also includes a machining center spindle equipped with a gripping device. The four-axis device is mounted on a movable machine base 19. A second mounting position is provided on the four-axis device 15, and a storage tray 17 is fixedly mounted on the second mounting position. The workpiece gripping device 2 is located on the upper part of the storage tray and the workpiece clamping fixture 14.

[0038] The four-axis device 15 is configured with a first working position and a second working position; the first working position positions the workpiece in the storage tray 17 directly below the workpiece gripping device 2; the second working position positions the workpiece fixing position of the workpiece clamping fixture 14 directly below the workpiece gripping device 2. The four-axis device 15 also has a third working position, which positions the workpiece fixing position of the workpiece clamping fixture 14 directly below the spindle body 1. Figure 7 As shown, the movable machine tool 19 is equipped with a machine tool X-axis moving device 20 and a machine tool X-axis moving device 21. The four-axis device 15 is connected to the X-axis moving device 20 and further connected to the machine tool X-axis moving device 21 through the X-axis moving device 20. The first working position, the second working position and the third working position of the four-axis device 15 are switched by the translation of the movable machine tool 19 in the XY plane.

[0039] The following section, in conjunction with the working process of the machining center, further illustrates the structure and technical effects of this utility model.

[0040] Positioning and material handling stage: The four-axis device 15 moves to the first working position, so that the workpiece in the storage tray 17 is directly below the processing object gripping device 2; the pen-shaped cylinder is activated, the piston rod extends downward, and drives the processing object clamping mechanism 4 to descend to the material handling position; the clamping drive device 13 controls the clamping fixing block 12 to perform the clamping action and pick up the workpiece 16 from the storage tray 17.

[0041] Transfer to the processing position: The four-axis device 15 moves to the second working position, so that the workpiece fixing position of the workpiece clamping fixture 14 is directly below the workpiece gripping device 2; the piston rod continues to move down, and the clamping drive device 13 controls the workpiece clamping fixing block 12 to release the workpiece, and place the workpiece 16 in the workpiece fixing position of the workpiece clamping fixture 14.

[0042] Machining and Reset Stage: The pen-shaped cylinder retracts, and the piston rod drives the workpiece clamping mechanism 4 to rise above the lowest machining end face of the spindle body 1; the four-axis device 15 moves to the third working position, so that the workpiece fixing position of the workpiece clamping fixture 14 is directly below the spindle body 1, and then the spindle tool is switched to perform milling machining on the workpiece. After machining is completed, the four-axis device 15 moves to the second working position, the piston rod extends downward for the second time, and the workpiece clamping fixing block 12 re-grabs the workpiece; the four-axis device 15 returns to the first working position, and the workpiece clamping mechanism 4 puts the workpiece back into the storage tray 17, completing a single operation cycle.

[0043] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use a machining center spindle and machining center equipped with a gripping device according to this utility model, and can produce the positive effects described in this utility model.

[0044] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0045] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A machining center spindle equipped with a gripping device, characterized in that: The device includes a spindle body that is movable along the height direction. A first mounting position is provided on the side wall of the spindle body. A workpiece gripping device is fixedly installed on the first mounting position. The workpiece gripping device moves synchronously with the spindle body. The workpiece gripping device includes a workpiece holding mechanism and a lifting device. The workpiece holding mechanism is driven by the lifting device to move along the height direction. The lifting device is fixed on the first mounting position.

2. The machining center spindle equipped with a gripping device according to claim 1, characterized in that: A fixed bracket is installed at the first mounting position, and the object gripping device is mounted on the spindle body through the fixed bracket.

3. The machining center spindle equipped with a gripping device according to claim 2, characterized in that: The fixed bracket includes a spindle connecting plate and a fixing plate arranged perpendicularly to each other; the first end of the spindle connecting plate is connected to the bottom of the spindle body, and the second end extends outward beyond the bottom of the spindle body; the fixing plate is vertically connected to the second end of the spindle connecting plate, its back is attached to and fixed to the side wall of the spindle body, and its front is used to install the processing object gripping device.

4. The machining center spindle equipped with a gripping device according to claim 1, characterized in that: The lifting device includes a linear drive device and a linear guide structure; wherein, the output end of the linear drive device is driven to the workpiece clamping mechanism, and the workpiece clamping mechanism is simultaneously connected to the linear guide structure, thereby realizing the constrained linear motion of the workpiece clamping mechanism.

5. The machining center spindle equipped with a gripping device according to claim 4, characterized in that: The linear guide structure includes a slide rail and a slider, which are slidably connected and arranged vertically; the workpiece clamping mechanism is fixedly connected to the slide rail, and the slider is fixed to the side wall of the spindle body.

6. The machining center spindle equipped with a gripping device according to claim 1, characterized in that: The workpiece clamping mechanism includes a guide structure connecting plate, a workpiece clamping and fixing block, and a clamping drive device; the first side of the guide structure connecting plate is connected to the lifting device, and the second side is connected to the clamping drive device; the output end of the clamping drive device is drivenly connected to the workpiece clamping and fixing block.

7. The machining center spindle equipped with a gripping device according to claim 1, characterized in that: The workpiece clamping mechanism is configured such that, when driven to the maximum extension position by the lifting device, it is lower than the lowest machining end face of the spindle body in the height direction; and when driven to the minimum extension position by the lifting device, it is higher than the lowest machining end face of the spindle body in the height direction.

8. A machining center, comprising a workpiece clamping fixture and a four-axis device, wherein the workpiece clamping fixture is mounted on the four-axis device, characterized in that: The machining center includes a machining center spindle equipped with a gripping device as described in any one of claims 1-7. The four-axis device is mounted on a movable machine base. A second mounting position is provided on the four-axis device, and a storage tray is fixedly mounted on the second mounting position. The object gripping device is located on the upper part of the storage tray and the workpiece clamping fixture.

9. The machining center according to claim 8, characterized in that: The four-axis device is configured to have a first working position and a second working position; the first working position positions the workpiece in the storage tray directly below the workpiece gripping device; the second working position positions the workpiece fixing position of the workpiece clamping fixture directly below the workpiece gripping device.

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