Robot joint fixture

Abstract

Provided in the present utility model is a robot joint fixture, comprising: a positioning mechanism, which is fixed to a bottom plate and has a portion where the shape matches that of a part of a machined robot joint; clamping cylinders, wherein three or more clamping cylinders are spaced apart on the bottom plate around the positioning mechanism; and side ejecting cylinders, which are also arranged on the bottom plate around the positioning mechanism, wherein the ejection direction of the side ejecting cylinders is parallel to the bottom plate, and the side ejecting cylinders are in a direction other than the positioning mechanism. After being activated, the clamping cylinders can act in a direction perpendicular to the bottom plate and hold the robot joint on the positioning mechanism; and after being activated, the side ejecting cylinders eject to hold the portion of the robot joint that is not positioned at the positioning device. The robot joint is fixed to the positioning device in various different directions by the clamping cylinders, thereby achieving multi-point clamping, such that each clamping cylinder does not need to apply excessive pressure, which otherwise would cause the machined robot joint to deform.

Description

Robot joint fixture Technical Field

[0001] The utility model relates to mechanical manufacturing, in particular to a robot joint clamp. Background Art

[0002] With the continuous advancement of robotics technology, the application of lightweight robotic joints in industrial automation and service robotics is increasing. Lightweight design not only improves robot movement speed and precision, but also reduces energy consumption and improves operational efficiency. However, this lightweight design also presents a series of challenges in the processing and manufacturing of robotic joints.

[0003] On the one hand, due to the weaker structure of lightweight products, traditional clamping and fixing methods may no longer be applicable. During processing, excessive clamping force may cause product deformation or instability, affecting the processing quality and precision. On the other hand, when processing thin-walled products, excessive clamping force can also cause deformation or stress concentration, which in turn affects product performance and lifespan.

[0004] In addition, the traditional clamping method has become more problematic, causing rebound and stress deformation when the product is released after clamping. This not only places higher demands on the precision and stability of the product, but also may lead to safety hazards during the processing.

[0005] Therefore, the manufacturing needs of lightweight robotic joint products necessitate a rethink of clamping and fixturing solutions. New fixture designs must consider the lightweight nature of the product structure, providing sufficient support and stability while avoiding excessive pressure or stress on the product. Furthermore, a reliable clamping method must be found that ensures product stability during processing while preventing rebound or stress deformation.

[0006] In summary, the manufacturing of lightweight robotic joints faces numerous challenges, requiring comprehensive consideration and resolution from various perspectives, including clamping, fixation, and mounting methods. This requires not only optimizing fixture design and processing techniques, but also identifying appropriate solutions based on actual application scenarios to meet market demand for lightweight robotic joints. Utility Model Content

[0007] The purpose of the utility model is to overcome the defect in the prior art that the deformation of the processed parts and the clamping stability cannot be taken into account when thin-walled lightweight robot joints are processed, and to provide a robot joint clamp that can maintain clamping stability while preventing defects such as deformation.

[0008] The utility model solves the above technical problems through the following technical solutions:

[0009] A robot joint fixture is characterized by comprising: a positioning mechanism, the positioning mechanism being fixed to a base plate and having a portion that matches the shape of a portion of the robot joint being processed; a clamping cylinder, three or more of which are spaced apart on the base plate around the positioning mechanism; and a side push cylinder, the side push cylinder also being arranged on the base plate around the positioning mechanism, the side push cylinders ejecting in a direction parallel to the base plate and facing away from the positioning mechanism. When the robot joint is placed on the positioning mechanism, the clamping cylinder can be turned on and move in a direction perpendicular to the base plate to hold the robot joint on the positioning mechanism. The side push cylinders eject after being turned on to hold the robot joint in a position not positioned on the positioning device. Here, when the robot joint is performing thin-wall processing, the clamping cylinders are fixed to the positioning device from different directions, achieving multi-point clamping, so that each clamping cylinder does not need to apply excessive pressure, which would cause deformation of the robot joint being processed. At the same time, the side cylinder can hold the part of the robot joint that extends beyond the positioning mechanism after it is fixed. Therefore, even if the clamping cylinder does not apply a greater holding force to the robot joint, it can ensure that the robot joint is not easily rotated during thin-wall processing.

[0010] Preferably, the robot joint fixture further includes a floating support cylinder, which is disposed on the base plate within the stroke range of the side ejection cylinder and can be ejected perpendicularly to the base plate. The floating support cylinder allows the height of the robot joint outside the positioning mechanism to be adjusted and maintained after positioning, thereby preventing the robot joint being processed from tipping over.

[0011] Preferably, the positioning mechanism includes a hollow cylindrical portion. In this way, a part of the robot joint can rotate according to the angle required during the positioning process to cooperate with the action of the side push cylinder.

[0012] Preferably, the base plate around the positioning mechanism is further provided with a plurality of support pins perpendicular to the base plate, thereby enabling the robot joints and the processing height thereof to be maintained and adjusted through the support pins.

[0013] Preferably, the base plate is also provided with a chip blower for supplying air to the processed robot joint to remove debris generated during processing. In other words, after processing, the robot joint can be transported to a position directly opposite the chip blower. The chip blower then supplies air to remove the debris. Here, another compression cylinder can be used to hold the robot joint in place in the air supply path directly opposite the chip blower.

[0014] In summary, by providing multiple clamping cylinders and side-lift cylinders that cooperate with each other to hold the robot joint to be machined on the positioning mechanism, the robot joint is fixed to the positioning device from different directions by the clamping cylinders, achieving multi-point clamping. This eliminates the need for each clamping cylinder to apply excessive pressure, which could cause deformation of the robot joint being machined. Furthermore, the side-lift cylinders can maintain the portion of the robot joint that extends beyond the positioning mechanism after being fixed. Therefore, even if the clamping cylinders do not apply a greater holding force to the robot joint, the robot joint is prevented from rotating and displacing during thin-wall machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] FIG1 is a schematic diagram of the three-dimensional structure of a robot joint clamp according to one embodiment of the present invention.

[0016] FIG2 is a schematic top view of the structure of a robot joint fixture according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings.

[0018] FIG1 is a schematic diagram of the three-dimensional structure of a robot joint fixture according to an embodiment of the present invention, and FIG2 is a schematic diagram of the top view of the robot joint fixture according to an embodiment of the present invention. As shown in FIG1 and FIG2, the robot joint fixture involved in the present invention includes: a positioning mechanism 1, which is fixed to a base plate 2 and has a portion that matches the shape of a portion of a robot joint to be processed (not shown in the figure); a clamping cylinder 3, wherein three or more clamping cylinders 3 are arranged on the base plate 2 around the positioning mechanism 1 at intervals; and a side push cylinder 4, which is also arranged on the base plate 2 around the positioning mechanism 1. The ejection direction of the side push cylinder 4 is parallel to the base plate 2 and faces the direction outside the positioning mechanism 1. When the robot joint is placed on the positioning mechanism 1, the clamping cylinder 3 can be opened and moved in a direction perpendicular to the base plate 2 to keep the robot joint on the positioning mechanism 1. The side push cylinder 4 is pushed out after opening to keep the robot joint not positioned in the position of the positioning device. Here, when the robot joint is performing thin-wall machining, the clamping cylinders 3 are fixed to the positioning device from various directions, achieving multi-point clamping. This prevents each clamping cylinder 3 from applying excessive pressure, which could cause deformation of the robot joint being machined. Simultaneously, the side-supporting cylinders 4 can maintain the portion of the robot joint that extends beyond the positioning mechanism 1 after being fixed. Therefore, even if the clamping cylinders 3 do not apply a greater holding force to the robot joint, the robot joint is prevented from rotating during thin-wall machining. In this embodiment, the clamping cylinders 3 can position the robot joint by extending and retracting.

[0019] Furthermore, the robot joint fixture includes a floating support cylinder 5, which is positioned on the base plate 2 within the stroke range of the side ejection cylinder 4 and can be ejected perpendicularly to the base plate 2. The provision of the floating support cylinder 5 allows the height of the robot joint outside the positioning mechanism 1 to be adjusted and maintained after positioning, making it less likely that the robot joint being processed will flip over.

[0020] Furthermore, the positioning mechanism 1 includes a hollow cylindrical portion. In this way, a portion of the robot joint can rotate according to the angle required during the positioning process to cooperate with the action of the side push cylinder 4.

[0021] Furthermore, a plurality of support pins 6 perpendicular to the bottom plate 2 are provided on the bottom plate 2 around the positioning mechanism 1. Thus, the robot joint and its processing height can be maintained and adjusted through the support pins 6.

[0022] Furthermore, a chip blower 7 is provided on the base plate 2. This blower 7 is used to blow air to the processed robot joints to remove debris generated during processing. In other words, after processing, the robot joints can be transported to a position directly opposite the chip blower 7. The chip blower 7 then blows air to remove the debris. Here, additional clamping cylinders 3 can be used to hold the robot joints in place in the air supply path directly opposite the chip blower 7.

[0023] The unique design of this robot joint fixture lies in its innovative structure and functionality. First, it employs a multi-point clamping design, using three or more clamping cylinders (3) to secure the robot joint to the positioning device from different directions. This avoids the excessive pressure and product deformation that can result from single-point clamping. Furthermore, the presence of side-lift cylinders (4) ensures the stability of the robot joint after clamping, preventing rotation during thin-wall machining.

[0024] Furthermore, by adding a floating support cylinder 5, vertical ejection can be achieved within the ejection stroke range to adjust and maintain the height of the robot joint after positioning, preventing the robot joint from tipping over. Furthermore, the hollow cylindrical portion of the positioning mechanism 1 allows the robot joint to rotate as needed during positioning to coordinate with the movement of the side ejection cylinder 4.

[0025] The support pins 6 perpendicular to the base plate 2 are provided on the base plate 2 to further enhance the support and adjustment function of the robot joint and its processing height. These support pins 6 can effectively maintain the stability and accuracy of the robot joint during the processing.

[0026] Finally, the chip blowing device 7 allows the robot joint to remove the generated debris in time after processing, keeping the processing environment clean. The synergistic effect of the other compression cylinders 3 ensures that the robot joint remains stable during the chip blowing process and does not move unexpectedly due to air supply.

[0027] To sum up, the robot joint clamp of the present invention is not only innovative in clamping and fixing, but also fully considered and realized in terms of functionality and practicality, providing reliable support and guarantee for the processing and manufacturing of robot joint products.

[0028] The above content is only a preferred embodiment of the present invention and cannot limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope defined by the claims of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A robot joint fixture, characterized in that: include: A positioning mechanism, fixed to a base plate, having a portion matching the shape of a portion of a robot joint to be processed, A pressing cylinder, wherein three or more pressing cylinders are arranged at intervals on the base plate around the positioning mechanism. A side push cylinder is also provided on the bottom plate around the positioning mechanism, and the ejection direction of the side push cylinder is parallel to the bottom plate and faces the direction outside the positioning mechanism. When the robot joint is placed on the positioning mechanism, the pressing cylinder can be turned on and move in a direction perpendicular to the base plate to keep the robot joint on the positioning mechanism. The side push cylinder is pushed out after being turned on to keep the robot joint from being positioned at the position of the positioning device.

2. The robot joint fixture according to claim 1, characterized in that: The robot joint fixture also includes a floating support cylinder, The floating support cylinder is arranged on the bottom plate within the stroke range of the side ejection cylinder and can be ejected perpendicularly to the bottom plate.

3. The robot joint fixture according to claim 2, characterized in that: The positioning mechanism includes a hollow cylindrical portion.

4. The robot joint fixture according to claim 2, characterized in that: A plurality of support pins perpendicular to the bottom plate are also provided on the bottom plate around the positioning mechanism.

5. The robot joint fixture according to claim 4, characterized in that: The bottom plate is also provided with a chip blowing device, which is used to blow air to the robot joint after processing to remove debris generated during processing.

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