Workpiece clamping mechanism
By designing the slot on the spline shaft and inserting the slot with a cylinder drive clamping plate, the problem that existing clamping mechanisms are difficult to stably clamp complex workpieces is solved, and workpiece handling with high precision and high reliability is achieved.
Patent Information
- Application Number
- CN202422376937.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-09-27
AI Technical Summary
Existing clamping mechanisms are difficult to stably and reliably clamp workpieces of irregular shapes or complex structures, such as clutches with spline shafts, resulting in the risk of loosening or falling off during handling.
The design includes a mounting plate, a fixing plate, a clamping device and a spline shaft card slot is adopted. The clamping plate is inserted into the spline shaft card slot through a cylinder drive, and the clamping device is limited by the clamping groove, and precise clamping is achieved through the arc matching between the clamping plate and the card slot.
It improves the stability and accuracy of clamping, ensures the safety and reliability of the workpiece during handling, and can effectively avoid loosening or falling off.
Smart Images
Figure CN223199044U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of workpiece clamping, and in particular to a workpiece clamping mechanism. Background Art
[0002] In the field of mechanical manufacturing, the widespread use of automated equipment has greatly improved production efficiency and machining accuracy. In particular, gripping mechanisms, as key components in workpiece handling and assembly, not only impact operational efficiency but also directly impact final product quality. With the promotion and development of Industry 4.0, the demand for fast and precise gripping and release of complex workpieces has increased significantly, making efficient and reliable gripping mechanisms an indispensable component of modern production lines. For example, in clutch manufacturing, workpieces with splined shafts must be precisely handled.
[0003] Currently, the clamping mechanisms used in such workpiece handling applications primarily include pneumatic clamps, hydraulic clamps, and electric clamps. However, a common problem with these traditional clamping mechanisms is that they struggle to achieve stable and reliable gripping when gripping irregularly shaped or complex workpieces (such as clutches with spline shafts), leading to the risk of the workpiece loosening or falling off during handling. In particular, in clutch production, since no part of the clutch being processed, aside from the spline shaft, can come into hard contact with the mechanical device, achieving precise and secure gripping of the spline shaft using a simple mechanical structure presents an urgent challenge. Utility Model Content
[0004] In order to smoothly clamp a spline shaft and drive a workpiece to move, the utility model provides a workpiece clamping mechanism.
[0005] The utility model provides a workpiece clamping mechanism adopting the following technical solutions:
[0006] A workpiece clamping mechanism includes: a mounting plate connected to a robotic arm, with fixed plates connected to both ends of the mounting plate; a first clamping device and a second clamping device, the first clamping device being connected to the fixed plate at the first end of the mounting plate, and the second clamping device being connected to the fixed plate at the second end of the mounting plate; a slot is provided on the spline shaft, the slot is located below the spline, and the first clamping device and the second clamping device are both inserted into the slot, so as to achieve clamping of the workpiece through the spline shaft.
[0007] By adopting the above technical solution, the first clamping device and the second clamping device are started, and both are inserted into the slots on the spline shaft. The slots limit the clamping positions of the first clamping device and the second clamping device, and improve the clamping stability, thereby achieving effective clamping of the workpiece through the spline shaft and being able to drive the workpiece to move.
[0008] Preferably, the first clamping device and the second clamping device have the same structure, both including a cylinder, a clamping plate and a connecting piece. The cylinder is connected to the corresponding fixed plate, the driving shaft of the cylinder passes through the fixed plate, the clamping plate is arranged between the two fixed plates, and the clamping plate is connected to the cylinder through the connecting piece. The ends of the two clamping plates away from the cylinder are inserted into the slot to achieve clamping of the spline shaft.
[0009] By adopting the above technical solution, the cylinder is started, and the cylinder drives the clamping plate to move, so that the two clamping plates approach each other until the clamping plates are inserted into the slots, thereby achieving effective clamping of the spline shaft.
[0010] Preferably, the groove ring is arranged on the circumferential wall of the spline shaft, and the end surface of the clamping plate away from the cylinder is recessed inward to form a clamping portion, and the clamping portion abuts against the groove of the spline shaft, and the two clamping portions match the curvature of the groove.
[0011] By adopting the above technical solution, the clamping part is a recessed part, and the two clamping parts match the arc of the slot. When clamping the spline shaft, the workpiece clamping mechanism can clamp the spline shaft more stably, thereby improving the clamping accuracy and reliability.
[0012] Preferably, the fixing plate is fixedly connected to a guide plate, and the guide plate is in sliding contact with the bottom of the clamping plate to guide the clamping plate.
[0013] By adopting the above technical solution, effective guidance of the clamping plate is achieved, and the stability and precision of the movement of the clamping plate during the clamping process are improved.
[0014] Preferably, the first clamping device and the second clamping device also include a slider, which is arranged between the clamping plate and the cylinder, the side wall of the slider is connected to the cylinder through a connecting piece, the bottom of the slider is connected to the clamping plate, and the end of the clamping plate away from the cylinder protrudes from the slider, and the top of the slider slides and abuts against the bottom of the mounting plate.
[0015] By adopting this technical solution, the slider increases the contact area between the cylinder and the clamping plate, thereby enhancing the stability of the clamping plate's movement. Furthermore, the end of the clamping plate, which is away from the cylinder, protrudes from the slider, without affecting the clamping plate's grip on the spline shaft. The top of the slider slides against the bottom of the mounting plate, allowing the mounting plate to guide the slider. Since the guide plate also guides the clamping plate, the spline shaft clamping action is smoother and more precise.
[0016] Preferably, a groove is provided on the clamping plate, and the slider is inserted into the groove.
[0017] By adopting the above technical solution, the groove opened on the clamping plate matches the bottom of the slider, so that the slider can be inserted into the groove, thereby ensuring that the clamping plate can move stably along the slider under the drive of the cylinder, thereby improving the stability and reliability of the clamping process.
[0018] Preferably, baffles are provided on both sides of the slider perpendicular to the direction in which the cylinder drives the slider, the baffles are connected to both the mounting plate and the fixing plate, and the baffles are in sliding contact with both the slider and the clamping plate.
[0019] By adopting the above technical solution, the baffles set on both sides of the slider not only enhance the stability of the entire clamping mechanism, but also improve the guiding accuracy and structural rigidity during the clamping process through connection with the mounting plate and the fixed plate, ensuring the smoothness and accuracy of the clamping action.
[0020] Preferably, a containing chamber is formed between the slider, the clamping plate, the mounting plate and the baffle, and when the spline shaft is clamped, the containing chamber can contain the splines of the spline shaft.
[0021] By adopting the above technical solution, the clamping mechanism can clamp the spline shaft without causing interference, effectively improving the clamping stability, and reducing the possibility of the spline shaft shifting or falling during the clamping process, ensuring the safety and reliability of the clamping operation.
[0022] Preferably, the connecting member is a bolt.
[0023] By adopting the above technical solution, the connecting member adopts a bolt, which facilitates the assembly and maintenance of the first clamping device and the second clamping device, and improves the convenience and stability of the clamping mechanism.
[0024] In summary, the present invention has the following beneficial effects:
[0025] 1. Start the first clamping device and the second clamping device. Both are inserted into the slots on the spline shaft. The slots limit the clamping positions of the first clamping device and the second clamping device, and improve the clamping stability, so that the workpiece can be effectively clamped by the spline shaft and can be driven to move the workpiece.
[0026] 2. The clamping plate is driven into the slot by a pneumatic cylinder to achieve precise clamping of the spline shaft. The clamping portion at the end of the clamping plate matches the arc of the slot, further increasing the clamping stability and adapting to the handling needs of more complex workpieces.
[0027] 3. The mounting plate, guide plate and baffle cooperate with each other to further limit the movement of the clamping plate, thereby further increasing the clamping accuracy of the spline shaft. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of a workpiece clamping mechanism.
[0029] Figure 2 It is a schematic diagram of the positions of the first clamping device and the second clamping device.
[0030] Figure 3 It is a schematic diagram of the overall structure of the first clamping device and the second clamping device.
[0031] Figure 4 It is a schematic diagram of the connection between the slider and the clamping plate.
[0032] Description of reference numerals:
[0033] 1. Mounting plate; 11. Movable groove; 2. Fixed plate; 3. First clamping device; 31. Cylinder; 32. Slider; 321. Fixing hole; 33. Clamping plate; 331. Clamping portion; 332. Groove; 34. Connector; 4. Second clamping device; 5. Guide plate; 6. Baffle; 7. Receiving chamber; 8. Spline shaft; 81. Slot. DETAILED DESCRIPTION
[0034] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments.
[0035] In the description of the embodiments of this application, words such as "for example" or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "for example" or "for instance" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "for example" or "for instance" is intended to present the relevant concepts in a concrete manner.
[0036] In the description of the embodiments of the present application, the term "multiple" means two or more. For example, multiple systems refer to two or more systems, and multiple screen terminals refer to two or more screen terminals. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized.
[0037] A workpiece clamping mechanism, referring to Figure 1 and Figure 2 , including a mounting plate 1, a first clamping device 3 and a second clamping device 4. The mounting plate 1 is fixedly connected to the robot arm. Both ends of the mounting plate 1 are fixedly connected to a fixed plate 2. The first clamping device 3 is connected to the fixed plate 2 at the first end of the mounting plate 1, and the second clamping device 4 is connected to the fixed plate 2 at the second end of the mounting plate 1. A slot 81 is provided on the spline shaft 8, and the slot 81 is located below the spline. The first clamping device 3 and the second clamping device 4 are both inserted into the slot 81, which can realize the clamping of the workpiece through the spline shaft 8.
[0038] The first clamping device 3 and the second clamping device 4 are started, and both are inserted into the slot 81 on the spline shaft 8. The slot 81 limits the clamping position of the first clamping device 3 and the second clamping device 4, and improves the clamping stability, thereby realizing effective clamping of the workpiece through the spline shaft 8 and being able to drive the workpiece to move.
[0039] Reference Figure 1 , the mounting plate 1 is set horizontally and the fixing plate 2 is set vertically.
[0040] Reference Figure 2 and Figure 3 The first clamping device 3 and the second clamping device 4 have the same structure, each comprising a cylinder 31, a slider 32, a clamping plate 33, and a connector 34. The cylinder 31 is fixedly connected to the fixed plate 2, and the drive shaft of the cylinder 31 passes through the fixed plate 2. The slider 32 and the clamping plate 33 are both arranged between the two fixed plates 2.
[0041] Reference Figure 3 and Figure 4 The slider 32 includes a first portion and a second portion, the first portion and the second portion are integrally formed, wherein the first portion is arranged close to the cylinder 31. The thickness of the first portion is less than the thickness of the second portion, and the top surfaces of the first portion and the second portion are flush.
[0042] Reference Figure 3 and Figure 4 The top surface of the first portion defines a T-shaped fixing hole 321. A connector 34 is a bolt, with the head of the connector 34 snapping into the fixing hole 321 and the tail of the connector 34 threadedly connected to the drive shaft of the cylinder 31, securing the slider 32 to the cylinder 31. The diameter of the connector 34 is greater than the thickness of the first portion, facilitating adjustment of the connector 34.
[0043] Reference Figure 4 The top of the slider 32 is in sliding contact with the top of the mounting plate 1 , and the mounting plate 1 is provided with a movable groove 11 for the connector 34 to move.
[0044] Reference Figure 3 and Figure 4The top surface of the clamping plate 33 is provided with a groove 332, the groove 332 matches the bottom of the second part, and the bottom of the second part is inserted into the groove 332. The slider 32 and the clamping plate 33 are fixed by a plurality of bolts.
[0045] The cylinder 31 is started, and the cylinder 31 drives the clamping plates 33 to move, so that the two clamping plates 33 approach each other until the clamping plates 33 are inserted into the clamping grooves 81, thereby achieving effective clamping of the spline shaft 8.
[0046] Reference Figure 1 and Figure 3 The end surface of the clamping plate 33 facing away from the cylinder 31 is recessed inward to form a clamping portion 331, which is chamfered. A clamping groove 81 is formed around the circumferential wall of the spline shaft 8, and both clamping portions 331 match the curvature of the clamping groove 81. When clamping the spline shaft 8, the clamping portions 331 abut against the clamping groove 81.
[0047] The clamping portion 331 is a recessed portion, and the two clamping portions 331 match the arc of the clamping slot 81. When clamping the spline shaft 8, the workpiece clamping mechanism can clamp the spline shaft 8 more stably, thereby improving the clamping accuracy and reliability.
[0048] Reference Figure 2 and Figure 4 The fixed plate 2 is fixedly connected to a guide plate 5, which is arranged horizontally. The guide plate 5 is arranged between the two fixed plates 2. The fixed plate 2 abuts against the bottom of the clamping plate 33, effectively guiding the clamping plate 33 and improving the stability and accuracy of the movement of the clamping plate 33 during the clamping process.
[0049] Reference Figure 2 and Figure 4 Baffles 6 are provided on both sides of the slider 32 perpendicular to the direction in which the cylinder 31 drives the slider 32. The baffles 6 are arranged vertically, and the top of the baffle 6 is fixedly connected to the mounting plate 1. The two ends of the baffle 6 are arranged corresponding to the positions of the two fixed plates 2, and the side walls of the baffle 6 are fixedly connected to the corresponding fixed plates 2.
[0050] The baffles 6 provided on both sides of the slider 32 not only enhance the stability of the entire clamping mechanism, but also improve the guiding accuracy and structural rigidity during the clamping process through connection with the mounting plate 1 and the fixing plate 2, thereby ensuring the smoothness and accuracy of the clamping action.
[0051] Reference Figure 2 and Figure 4 When clamping the spline shaft 8 , the mounting plate 1 , the two sliders 32 , the two clamping plates 33 and the two baffles 6 form a receiving chamber 7 , which can receive the splines of the spline shaft 8 .
[0052] The clamping mechanism can clamp the spline shaft 8 without causing interference, effectively improving the clamping stability and reducing the possibility of the spline shaft 8 being offset or falling during the clamping process, thereby ensuring the safety and reliability of the clamping operation.
[0053] The operating principle of this application is as follows: during use, the robot arm drives the clamping mechanism close to the workpiece, activating the first clamping device 3 and the second clamping device 4. The cylinder 31 drives the slider 32 to move, and the slider 32 drives the clamping plate 33 to move. The two clamping plates 33 approach each other, and the two clamping parts 331 are inserted into the slots 81 on the spline shaft 8, thereby effectively clamping the spline shaft 8 and driving the workpiece to move.
[0054] The embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.
Claims
1. A workpiece clamping mechanism, characterized in that: include: A mounting plate (1) is connected to the robotic arm, and both ends of the mounting plate (1) are connected to fixing plates (2); a first clamping device (3) and a second clamping device (4), wherein the first clamping device (3) is connected to the fixing plate (2) at the first end of the mounting plate (1), and the second clamping device (4) is connected to the fixing plate (2) at the second end of the mounting plate (1); A clamping groove (81) is provided on the spline shaft (8), and the clamping groove (81) is located below the spline. The first clamping device (3) and the second clamping device (4) are both inserted into the clamping groove (81), so that the spline shaft (8) can clamp the workpiece.
2. A workpiece clamping mechanism according to claim 1, characterized in that: The first clamping device (3) and the second clamping device (4) have the same structure, and both include a cylinder (31), a clamping plate (33) and a connecting piece (34). The cylinder (31) is connected to the corresponding fixed plate (2), and the driving shaft of the cylinder (31) passes through the fixed plate (2). The clamping plate (33) is arranged between the two fixed plates (2). The clamping plate (33) is connected to the cylinder (31) through the connecting piece (34). The ends of the two clamping plates (33) away from the cylinder (31) are inserted into the clamping groove (81) to achieve clamping of the spline shaft (8).
3. A workpiece clamping mechanism according to claim 2, characterized in that: The clamping groove (81) is arranged on the circumferential wall of the spline shaft (8), and the end surface of the clamping plate (33) away from the cylinder (31) is recessed inward to form a clamping portion (331). The clamping portion (331) abuts against the clamping groove (81) of the spline shaft (8), and the arcs of the two clamping portions (331) match those of the clamping groove (81).
4. A workpiece clamping mechanism according to claim 2, characterized in that: The fixed plate (2) is fixedly connected to a guide plate (5), and the guide plate (5) is in sliding contact with the bottom of the clamping plate (33) to guide the clamping plate (33).
5. A workpiece clamping mechanism according to any one of claims 2 to 4, characterized in that: The first clamping device (3) and the second clamping device (4) further include a slider (32), the slider (32) being arranged between the clamping plate (33) and the cylinder (31), the side wall of the slider (32) being connected to the cylinder (31) via a connecting member (34), the bottom of the slider (32) being connected to the clamping plate (33), and one end of the clamping plate (33) away from the cylinder (31) protruding from the slider (32), and the slider (32) being in sliding contact with the mounting plate (1).
6. A workpiece clamping mechanism according to claim 5, characterized in that: The clamping plate (33) is provided with a groove (332), and the sliding block (32) is inserted into the groove (332).
7. The workpiece clamping mechanism according to claim 5, characterized in that: Baffles (6) are provided on both sides of the slider (32) perpendicular to the direction in which the cylinder (31) drives the slider (32); the baffles (6) are connected to both the mounting plate (1) and the fixing plate (2); and the baffles (6) are in sliding contact with both the slider (32) and the clamping plate (33).
8. A workpiece clamping mechanism according to claim 7, characterized in that: A holding chamber (7) is formed between the slider (32), the clamping plate (33), the mounting plate (1) and the baffle (6); when the spline shaft (8) is clamped, the holding chamber (7) can hold the splines of the spline shaft (8).
9. The workpiece clamping mechanism according to claim 2, characterized in that: The connecting member (34) is a bolt.