Workpiece automatic clamping device for machining center

Abstract

The utility model provides a kind of machining center automatic clamping workpiece device, including base plate and automatically clamping mechanism movably set on base plate, clamping station is equipped on base plate, clamping station is equipped with multiple positioning surface for supporting and limiting workpiece, automatically clamping mechanism includes power drive assembly, force transmission mechanism and multidirectional clamping assembly;Power drive assembly movably set on base plate;Force transmission mechanism is rotatably connected on base plate, and is linked with power drive assembly;Multidirectional clamping assembly includes first clamping component and second clamping component, first clamping component is linked with force transmission mechanism, and is cooperated with one of positioning surface to realize the clamping positioning of workpiece vertical direction;Second clamping component is slidably arranged in base plate and is linked with first clamping component, and is cooperated with another one of positioning surface to realize the clamping positioning of workpiece lateral direction.The utility model realizes workpiece fast and stable automatic chucking, improves overall machining efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically to an automatic workpiece clamping device for machining centers. Background Technology

[0002] With the rapid development of the 3C industry (computers, communications, 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] In the mass production process of CNC machining centers, the workpiece clamping method directly affects the production cycle, machining quality, and product yield. Currently, manual clamping is commonly used for workpiece positioning and fixation. However, this method has revealed many drawbacks in large-scale automated production: 1. Low clamping efficiency: Manual clamping requires manual operation one by one, which is time-consuming and difficult to meet the production rhythm under fast cycles, affecting the overall line efficiency; 2. High human resource consumption: A large number of operators are required, resulting in high labor intensity and hindering the company's control of labor costs; 3. Poor consistency and reliability: Manual operation is easily affected by the operator's skill level and work status, leading to problems such as incomplete clamping, insufficient or excessive clamping force, resulting in product positioning errors, and even quality defects such as crushing and scratching; 4. High risk of misoperation: Human factors can easily lead to misjudgment of clamping, increasing rework and defect rates, and reducing the overall production yield.

[0004] Based on the above, this utility model proposes an automatic workpiece clamping device for machining centers, which can effectively solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide an automatic workpiece clamping device for machining centers. This invention achieves rapid and stable automatic workpiece clamping, improving overall machining efficiency and product quality, reducing reliance on manual labor and the risk of errors, and providing strong support for CNC automated mass production.

[0006] This utility model provides an automatic workpiece clamping device for a machining center, including a base plate and an automatic clamping mechanism movably disposed on the base plate. The base plate is provided with a clamping station, and the clamping station has multiple positioning surfaces for supporting and limiting the workpiece. The automatic clamping mechanism includes a power drive component, a force transmission mechanism, and a multi-directional clamping component. The power drive component is movably disposed on the base plate. The force transmission mechanism is rotatably connected to the base plate and is linked with the power drive component. The multi-directional clamping component includes a first clamping component and a second clamping component. The first clamping component is linked with the force transmission mechanism and cooperates with one of the positioning surfaces to achieve vertical clamping and positioning of the workpiece. The second clamping component is slidably disposed in the base plate and is linked with the first clamping component, and cooperates with another positioning surface to achieve lateral clamping and positioning of the workpiece.

[0007] In one embodiment, the force transmission mechanism is a lever mechanism, including a fulcrum portion rotatably connected to the substrate via a support shaft, a power input end hinged to a power drive component, and a power output end hinged to a first clamping component; both ends of the support shaft are fixed to the substrate, and the lever mechanism is centered on the support shaft.

[0008] In one embodiment, the power drive assembly includes a cylinder rod with a hinge joint at the top. The power input end of the force transmission mechanism is hinged to the hinge joint to transmit the driving force of the power drive assembly to the force transmission mechanism.

[0009] In one embodiment, a vertical guide channel is provided on the substrate, and the cylinder rod is vertically movable within the guide channel.

[0010] In one embodiment, the first clamping component includes a pressing head that engages with the bottom surface of the clamping station to vertically clamp and position the workpiece placed on the clamping station.

[0011] In one embodiment, the first clamping component is provided with a slot, and a shaft is fixedly provided between the two side walls of the slot. The shaft is rotatably connected to the power output end of the force transmission mechanism, so that the lever mechanism can rotate relative to the shaft.

[0012] In one embodiment, the second clamping component includes at least a pair of side clamping assemblies, which are respectively disposed on both sides of the pressing head and are linked with the pressing head.

[0013] In one embodiment, the side clamp assembly includes a slider, an elastic element, and a connecting block. The connecting block is fixedly disposed within the substrate. The slider can slide horizontally within the substrate, and its first end is connected to the connecting block via the elastic element.

[0014] In one embodiment, the second end of the slider engages with one side of the clamping station to achieve lateral clamping and positioning of the workpiece placed on the clamping station.

[0015] In one embodiment, the head of the slider abuts against the side of the first clamping member away from the workpiece, and an inclined surface is provided on the abutting surface; the side of the first clamping member is provided with a guide inclined surface that cooperates with the inclined surface.

[0016] The advantages of the automatic workpiece clamping device for machining centers provided by this utility model are as follows:

[0017] This device can be widely used in CNC automation equipment, and is especially suitable for the efficient clamping and processing of components for 3C products such as mobile phones, computers, and watches. Through the design of the automated clamping structure, clamping time is effectively shortened, operator dependence is reduced, and production efficiency is significantly improved.

[0018] Compared to traditional pneumatic clamps that rely on a single cylinder to apply pressure and have limited clamping direction, this invention uses a mechanical linkage method to optimize the force transmission path, making the clamping action more stable and energy consumption lower.

[0019] Traditional clamp reset often relies on manual intervention or step-by-step execution, which is inefficient and prone to errors. However, this device achieves automatic retraction of the clamping components in the released state by setting up a guide ramp and elastic mechanism, and the overall structure has a higher level of automation and response efficiency.

[0020] Compared to traditional clamps that rely on manual operation and human judgment for positioning accuracy, this invention achieves automatic clamping and positioning in both vertical and lateral directions, improving positioning accuracy and reducing quality risks caused by human error. Attached Figure Description

[0021] 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.

[0022] Figure 1 A three-dimensional structural schematic diagram of the automatic workpiece clamping device for a machining center provided in this embodiment of the utility model;

[0023] Figure 2 A three-dimensional structural diagram of the automatic clamping mechanism provided in an embodiment of this utility model;

[0024] Figure 3 A partial three-dimensional structural schematic diagram of the automatic workpiece clamping device for a machining center provided in this embodiment of the utility model;

[0025] Figure 4 A top view of the automatic clamping mechanism in the clamping state provided in an embodiment of the utility model;

[0026] Figure 5 for Figure 4 Sectional view of AA;

[0027] Figure 6 for Figure 4 Sectional view of BB;

[0028] Figure 7 A top view of the automatic clamping mechanism in its non-clamping state, provided in an embodiment of this utility model;

[0029] Figure 8 for Figure 7 Sectional view of A1-A1;

[0030] Figure 9 for Figure 7 Sectional view of B1-B1.

[0031] Reference numerals: 1-Base plate; 2-Automatic clamping mechanism; 3-Clamping station; 4-First clamping component; 5-Second clamping component; 6-Support shaft; 7-Fulcrum; 8-Power input end; 9-Power output end; 10-Force transmission mechanism; 11-Cylinder rod; 12-Hinge joint; 13-Guide channel; 14-Pressing head; 15-Bottom surface; 16-Slot; 17-Shaft; 18-Slider; 19-Elastic element; 20-Connecting block; 21-One side of the clamping station; 22-Head; 23-Inclined surface; 24-Side of the first clamping component; 25-Guide inclined surface; 26-Workpiece; 27-Pivot; 28-Guide groove. Detailed Implementation

[0032] 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.

[0033] 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.

[0034] like Figures 1 to 3As shown, an automatic workpiece clamping device for a machining center includes a base plate 1 and an automatic clamping mechanism 2 movably disposed on the base plate 1. The base plate 1 is provided with a clamping station 3, which has multiple positioning surfaces for supporting and limiting workpieces 26. The automatic clamping mechanism 2 includes a power drive component, a force transmission mechanism 10, and a multi-directional clamping component. The power drive component is movably disposed on the base plate 1. The force transmission mechanism 10 is rotatably connected to the base plate 1 and is linked with the power drive component. The multi-directional clamping component includes a first clamping component 4 and a second clamping component 5. The first clamping component 4 is linked with the force transmission mechanism 10 and cooperates with one of the positioning surfaces to achieve clamping and positioning of the workpiece 26 in the vertical direction (Z-axis). The second clamping component 5 is slidably disposed in the base plate 1 and is linked with the first clamping component 4. It also cooperates with another positioning surface to achieve clamping and positioning of the workpiece 26 in the lateral direction (X-axis direction). The power drive component drives the multi-directional clamping component through the force transmission mechanism 10 to achieve multi-directional synchronous clamping action.

[0035] In this embodiment, the substrate 1 is provided with 4 clamping stations 3, and each clamping station 3 is provided with an automatic clamping mechanism 2.

[0036] The force transmission mechanism 10 is a lever mechanism, including a fulcrum 7 rotatably connected to the base plate 1 via a support shaft 6, a power input end 8 hinged to the power drive component, and a power output end 9 hinged to the first clamping component 4; both ends of the support shaft 6 are fixed to the base plate 1, and the lever mechanism is centered on the support shaft 6.

[0037] The power drive assembly includes a cylinder rod 11, with a hinge joint 12 at its top. The power input end 8 of the force transmission mechanism 10 is hinged to the hinge joint 12 to transmit the driving force of the power drive assembly to the force transmission mechanism 10. Specifically, the hinge joint 12 has a U-shaped structure with a transversely penetrating pivot 27 in its top groove. The two ends of the pivot 27 are fixedly connected to the two side walls of the U-shaped groove. The power input end 8 of the force transmission mechanism 10 has a racetrack-shaped guide groove 28 that cooperates with the pivot 27. When the automatic clamping mechanism 2 transitions between the clamping state and the non-clamping state, the pivot 27 can move along the groove wall within the guide groove 28, giving the force transmission mechanism 10 a motion compensation range during the lifting / lowering motion.

[0038] The base plate 1 is provided with a vertical guide channel 13, and the cylinder rod 11 is vertically movable in the guide channel 13. The cylinder rod 11 can reciprocate in the vertical direction in the guide channel 13 to achieve linear guidance.

[0039] The first clamping component 4 includes a pressing head 14, which moves vertically under the action of the driving mechanism and cooperates with the bottom surface 15 of the clamping station 3 to achieve vertical (Z-axis) clamping and positioning of the workpiece 26 placed on the clamping station 3.

[0040] The first clamping component 4 is provided with a slot 16, and a shaft 17 is fixedly provided between the two side walls of the slot 16. The shaft 17 is rotatably connected to the power output end 9 of the force transmission mechanism 10, so that the lever mechanism can rotate relative to the shaft 17.

[0041] The second clamping component 5 includes at least one pair of side clamping assemblies, which are respectively disposed on both sides of the pressing head 14 and are linked with the pressing head 14.

[0042] The side clamp assembly includes a slider 18, an elastic element 19, and a connecting block 20. The elastic element 19 is a spring. The connecting block 20 is fixedly disposed in the substrate 1. The slider 18 can slide in the horizontal direction in the substrate 1, and its first end is connected to the connecting block 20 through the elastic element 19.

[0043] The second end of the slider 18 cooperates with one side 21 of the clamping station to achieve lateral (X-axis) clamping and positioning of the workpiece 26 placed on the clamping station 3.

[0044] The slider 18 is T-shaped, with its head 22 abutting against the side of the first clamping member 4 away from the workpiece 26, and an inclined surface 23 is provided on this abutting surface; the side 24 of the first clamping member is provided with a guide inclined surface 25 that cooperates with the inclined surface 23. When the first clamping member 4 moves upward to release the workpiece 26, the guide inclined surface 25 contacts the inclined surface 23 of the slider 18 and pushes the slider 18 away from the workpiece 26, so as to realize the automatic retraction of the slider 18.

[0045] The clamping station 3 is provided with two positioning surfaces for clamping and positioning the workpiece 26 in another lateral direction. The first clamping component 4 cooperates with the bottom surface 15 of the clamping station 3 to achieve vertical (Z-axis) positioning, and the second clamping component 5 cooperates with one side of the clamping station 3 to achieve horizontal (X-axis) positioning. Combined with the restriction of the two positioning surfaces of the clamping station 3 in the other horizontal (Y-axis) direction, the workpiece 26 is stably clamped and accurately positioned in the X, Y and Z axes.

[0046] The clamping and releasing process of the workpiece in this utility model is as follows:

[0047] 1. The clamping process (e.g.) Figures 4-6As shown): ① The cylinder rod 11 moves upward → ② It drives the lever mechanism to rotate counterclockwise around the support shaft 6 as the rotation center at a fixed angle → ③ The power output end 9 drives the first clamping component 4 to move downward → ④ The guide slope 25 disengages from the slope 23 of the slider 18, and the two sliders 18 move towards the workpiece 26 through the elastic force of the corresponding elastic element 19.

[0048] 1. The release process (e.g.) Figures 7-9 As shown): ① The cylinder rod 11 moves downward → ② It drives the lever mechanism to rotate clockwise around the support shaft 6 as the rotation center at a fixed angle → ③ It drives the first clamping component 4 to move upward → ④ The guide slope 25 contacts the slope 23 of the slider 18, and the slider 18 is driven by the guide slope 25 of the first clamping component 4 to move away from the workpiece 26.

[0049] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the automatic workpiece clamping device for machining centers of this utility model, and can produce the positive effects described in this utility model.

[0050] 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.

[0051] 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.

[0052] 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. An automatic workpiece clamping device for a machining center, characterized in that: The device includes a base plate and an automatic clamping mechanism movably mounted on the base plate. The base plate has clamping stations with multiple positioning surfaces for supporting and limiting workpieces. The automatic clamping mechanism includes a power drive assembly, a force transmission mechanism, and a multi-directional clamping assembly. The power drive assembly is movably mounted on the base plate. The force transmission mechanism is rotatably connected to the base plate and linked with the power drive assembly. The multi-directional clamping assembly includes a first clamping component and a second clamping component. The first clamping component is linked with the force transmission mechanism and cooperates with one of the positioning surfaces to achieve vertical clamping and positioning of the workpiece. The second clamping component is slidably mounted within the base plate and is linked with the first clamping component, and cooperates with another positioning surface to achieve lateral clamping and positioning of the workpiece.

2. The automatic workpiece clamping device for machining centers according to claim 1, characterized in that: The force transmission mechanism is a lever mechanism, including a fulcrum portion rotatably connected to the substrate via a support shaft, a power input end hinged to the power drive component, and a power output end hinged to the first clamping component; both ends of the support shaft are fixed to the substrate, and the lever mechanism is centered on the support shaft.

3. The automatic workpiece clamping device for machining centers according to claim 2, characterized in that: The power drive assembly includes a cylinder rod, the top of which is provided with a hinge joint. The power input end of the force transmission mechanism is hinged to the hinge joint to transmit the driving force of the power drive assembly to the force transmission mechanism.

4. The automatic workpiece clamping device for machining centers according to claim 3, characterized in that: The base plate is provided with a vertical guide channel, and the cylinder rod is vertically movable and located in the guide channel.

5. The automatic workpiece clamping device for machining centers according to claim 1, characterized in that: The first clamping component includes a pressing head, which engages with the bottom surface of the clamping station to vertically clamp and position the workpiece placed on the clamping station.

6. The automatic workpiece clamping device for a machining center according to claim 2, characterized in that: The first clamping component has a slot, and a shaft is fixedly arranged between the two sides of the slot. The shaft is rotatably connected to the power output end of the force transmission mechanism, so that the lever mechanism can rotate relative to the shaft.

7. The automatic workpiece clamping device for machining centers according to claim 1, characterized in that: The second clamping component includes at least one pair of side clamping assemblies, which are respectively disposed on both sides of the lower pressure head and are linked with the lower pressure head.

8. The automatic workpiece clamping device for a machining center according to claim 7, characterized in that: The side clamp assembly includes a slider, an elastic element, and a connecting block. The connecting block is fixedly disposed within the substrate. The slider can slide horizontally within the substrate, and its first end is connected to the connecting block through the elastic element.

9. The automatic workpiece clamping device for a machining center according to claim 8, characterized in that: The second end of the slider engages with one side of the clamping station to achieve lateral clamping and positioning of the workpiece placed on the clamping station.

10. The automatic workpiece clamping device for a machining center according to claim 8, characterized in that: The head of the slider abuts against the side of the first clamping component away from the workpiece, and an inclined surface is provided on the abutting surface; the side of the first clamping component is provided with a guide inclined surface that cooperates with the inclined surface.

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