Robot polishing fixture for connecting rod type forgings

Abstract

The utility model discloses a connecting rod class forging robot polishing fixture, its characterized by: including the connecting frame and the multiple adsorption components of setting in the connecting frame bottom, and each adsorption component all includes electromagnet and hinged shaft, the hinged shaft includes the connecting shaft of elevating type cooperation in the bottom of connecting plate, the connecting plate of hinged in the lower end position on connecting shaft and the elastic member of being sleeved on connecting shaft and will connecting shaft press down, electromagnet is connected on the lower surface of connecting plate for adsorbing forge piece. The utility model has the characteristics of high polishing quality and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of workpiece processing, and more particularly to a robotic grinding fixture for connecting rod forgings. Background Technology

[0002] The seam line, also known as the die parting line or overflow line, is an unavoidable phenomenon in the die forging process. In order to ensure the appearance quality of the forging, eliminate stress concentration, and ensure the assembly dimensional accuracy of the forging and facilitate subsequent processing, the seam line needs to be ground using tools such as grinding wheels or abrasive belts during the production of forgings.

[0003] like Figure 1 The slender connecting rod forging 3 shown has its seam located around the perimeter of the connecting rod. When using a belt sander to grind the seam, the workpiece needs to be driven to move and rotate along the seam direction. As the sanding surface and the seam of the workpiece gradually approach each other, the abrasive on the sanding surface rubs against the seam, thus grinding away the seam. In the above-mentioned production process, one existing technology uses manual hand-held grinding of the workpiece. Because the workpiece is large and long, it is difficult to maintain a uniform speed and grinding force when grinding manually. When the speed and force are uneven, the workpiece surface will be uneven due to inconsistent material removal, which may result in substandard production quality or even scrapped parts. In addition, since the belt sander is a high-speed rotating machine and the operator is in the same workspace as the equipment, improper operation can easily lead to production safety accidents. Another existing technology is to use upper and lower jaws to hold the workpiece for grinding. Since the workpiece needs to be ground in all 360° directions, this method cannot be completed in one go. It is necessary to perform a second clamping to complete the grinding of all the seams of the workpiece. Due to the second positioning and clamping, the overall cycle efficiency is low, and the second clamping is prone to slight misalignment, which affects the final grinding quality of the parts. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a robotic grinding fixture for linkage forgings, which features high grinding quality and efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A robotic grinding fixture for rod-type forgings, characterized in that it includes a connecting frame and multiple adsorption components disposed at the bottom of the connecting frame, each adsorption component including an electromagnet and a hinge shaft;

[0007] The hinge shaft includes a connecting shaft that is lifted and fitted at the bottom of the connecting plate, a connecting plate hinged to the lower end of the connecting shaft, and an elastic element fitted on the connecting shaft and pressing the connecting shaft down.

[0008] The electromagnet is connected to the lower surface of the connecting plate and is used to attract the forging.

[0009] Preferably, the bottom of the connecting frame has a connecting part perpendicular to the connecting frame, and the connecting part has a connecting hole for the connecting shaft to move up and down.

[0010] Preferably, a limiting plate is connected to the top of the connecting shaft. The first end of the limiting plate is connected to the connecting shaft, and the second end extends to the edge of the connecting part and bends downward to cooperate with the side wall of the connecting part to form a limiting structure.

[0011] Preferably, a bushing is provided on the lower surface of the connecting part at the position corresponding to the connecting hole, and the connecting shaft is located in the bushing.

[0012] Preferably, the multiple adsorption components are arranged in a straight line, and in a natural state, the height of the electromagnets in the adsorption components on both sides is higher than the height of the electromagnet in the adsorption component in the middle.

[0013] Preferably, the elastic coefficient of the elastic element located in the adsorption components on both sides is greater than that of the elastic element located in the adsorption component in the middle.

[0014] Preferably, an elastic plunger is provided on the electromagnet located in the adsorption components on both sides.

[0015] The advantages of this utility model are as follows: It can be used in conjunction with a robot. The connecting frame is installed on the robotic arm, and the forging to be ground is attracted by an electromagnet. Then, the forging is transferred to the grinding equipment for grinding. This can save labor costs and avoid the precision control problems of manual operation. Secondly, by using an electromagnet to hold the forging, the gripping surface and the grinding surface of the forging do not interfere with each other, so as to complete the grinding in one gripping, which significantly improves grinding efficiency and grinding quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the robot grinding fixture for link-type forgings provided in this embodiment;

[0017] Figure 2 This is a front view of the robot grinding fixture for link-type forgings provided in this embodiment;

[0018] Figure 3 This is a schematic diagram of the elastic plunger provided in this embodiment. Detailed Implementation

[0019] Combination Figures 1 to 3 The present invention provides a further description of the robotic grinding fixture for connecting rod forgings.

[0020] A linkage-type forging robot grinding fixture is characterized by comprising a connecting frame 1 and multiple adsorption components 2 disposed at the bottom of the connecting frame 1, each adsorption component 2 comprising an electromagnet 21 and a hinge shaft 22.

[0021] The hinge shaft 22 includes a connecting shaft 221 that is vertically fitted to the bottom of the connecting frame 1, a connecting plate 222 hinged to the lower end of the connecting shaft 221, and an elastic element, which is a spring, fitted onto the connecting shaft 221 and pressing it down. The upper end of the spring abuts against the lower surface of the connecting part 11, and the lower end abuts against the outer step of the connecting shaft 221. The lower end of the connecting shaft 221 has an inverted U-shaped seat 2211. The upper surface of the connecting plate 222 has a connecting piece 2221. This connecting piece extends into the U-shaped seat 2211, and a pin is inserted to achieve a rotatable connection between the connecting plate 222 and the connecting shaft 221. The electromagnet 21 is a cuboid structure, bolted to the lower surface of the connecting plate 222, and is used to attract the forging 3.

[0022] When in use, this utility model can be used in conjunction with a robotic arm. The upper end of the connecting plate 222 is installed on the robotic arm, and the forging 3 to be ground is attracted by the electromagnet 21. Then, the forging 3 is transferred to the grinding equipment for grinding. This can save labor costs, and the mechanical control of the forging movement can significantly improve the accuracy of the forging movement. Secondly, by using the electromagnet 21 to attract and hold the forging 3, the gripping surface of the forging 3 and the grinding surface can be made to not interfere with each other, thereby realizing the completion of the entire grinding in one gripping, which significantly improves the grinding efficiency and grinding quality.

[0023] With the above structural design, when the grinding fixture holds and grinds the forging 3, the electromagnet 21 has a degree of freedom of vertical translation and a degree of freedom of rotation in one direction. The vertical degree of freedom can avoid rigid collisions when the robot grasps the forging, and the rotational degree of freedom can compensate for the bending deformation generated during the forging of the forging 3, so as to achieve stable grasping of the forging 3.

[0024] The bottom of the connecting frame 1 has a connecting part 11 perpendicular to the connecting frame 1. The connecting part 11 has a connecting hole 111 for the connecting shaft 221 to move up and down. A guide sleeve is provided in the connecting hole 111.

[0025] A limiting plate 4 is connected to the top of the connecting shaft 221. The first end of the limiting plate 4 is bolted to the top wall of the connecting shaft 221, and the second end extends to the edge of the connecting part 11 and bends downward to fit against the side wall of the connecting part 11 to form a limiting structure, thereby restricting the circumferential rotation of the connecting shaft 221 in the connecting hole 111.

[0026] A bushing 6 is provided on the lower surface of the connecting part 11 at the position corresponding to the connecting hole 111. The connecting shaft 221 is located in the bushing 6. The bushing 6 can increase the stability of the connecting shaft 221 and improve the stability of clamping the forging 3.

[0027] In this embodiment, six sets of adsorption components 2 are arranged in a straight line. In the natural state, the height of the electromagnets 21 in the adsorption components 2 on both sides is higher than the height of the electromagnets 21 in the four adsorption components 2 in the middle. The height difference in the free state allows the electromagnets 21 to effectively adsorb and clamp the forging 3 whether it is bent upwards or downwards.

[0028] The elastic coefficient of the elastic element in the adsorption components 2 on both sides is greater than that of the elastic element in the adsorption component 2 in the middle. The springs with larger elastic coefficients at both ends can ensure that the workpiece maintains a certain rigidity after being clamped, thus avoiding the problem of vibration during the grinding process.

[0029] An elastic plunger 5 is connected to the electromagnet 21 located in the adsorption components 2 on both sides via a Z-shaped plate. The plunger 5 includes an outer sleeve 51, a push rod 52, and a spring 53. The outer sleeve 51 is fixed to the plate, the push rod 52 is movably fitted in the outer sleeve 51, and the spring 53 is assembled between the outer sleeve 51 and the push rod 52. The upper end of the spring 53 abuts against the inner top wall of the outer sleeve 51, and the lower end abuts against the outer step of the push rod 52, pressing the push rod 52 down so that the lower end of the push rod 52 is lower than the bottom surface of the electromagnet 21. The plunger 5 can provide the elastic force for separation during the blanking process after the forging is ground, preventing the forging from failing to fall off due to residual magnetism after the electromagnet 21 is de-energized.

[0030] Unless otherwise specified, in this utility model, terms such as "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 patent. 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.

[0031] 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.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A robotic grinding fixture for linkage-type forgings, characterized in that: It includes a connecting frame and multiple adsorption components disposed at the bottom of the connecting frame, each adsorption component including an electromagnet and a hinge shaft; The hinge shaft includes a connecting shaft that is lifted and fitted at the bottom of the connecting plate, a connecting plate hinged to the lower end of the connecting shaft, and an elastic element fitted on the connecting shaft and pressing the connecting shaft down. The electromagnet is connected to the lower surface of the connecting plate and is used to attract the forging.

2. The robotic grinding fixture for linkage forgings according to claim 1, characterized in that: The bottom of the connecting frame has a connecting part perpendicular to the connecting frame, and the connecting part has a connecting hole for the connecting shaft to move up and down.

3. The robotic grinding fixture for linkage forgings according to claim 2, characterized in that: A limiting plate is connected to the top of the connecting shaft. The first end of the limiting plate is connected to the connecting shaft, and the second end extends to the edge of the connecting part and bends downward to cooperate with the side wall of the connecting part to form a limiting structure.

4. The robotic grinding fixture for linkage forgings according to claim 3, characterized in that: A bushing is provided on the lower surface of the connecting part at the position corresponding to the connecting hole, and the connecting shaft is located in the bushing.

5. The robotic grinding fixture for linkage forgings according to claim 1, characterized in that: multiple sets The adsorption components are arranged in a straight line. In their natural state, the height of the electromagnets in the adsorption components on both sides is higher than the height of the electromagnet in the adsorption component in the middle.

6. The robotic grinding fixture for linkage forgings according to claim 1, characterized in that: The elastic coefficient of the elastic element located in the adsorption components on both sides is greater than that of the elastic element located in the adsorption component in the middle.

7. The robotic grinding fixture for linkage forgings according to claim 1, characterized in that: Elastic plungers are installed on the electromagnets located in the adsorption components on both sides.

Images