A positioning structure for automobile parts of a numerical control grinding machine

Abstract

The present disclosure relates to the technical field of automobile part processing, and one embodiment of the present disclosure provides an automobile part positioning structure for a numerical control grinding machine, which comprises a main frame and a pair of rectangular openings, the rectangular openings are arranged at two ends of the surface of the main frame, a clamping assembly is arranged on the main frame, two pairs of circular holes are arranged at two ends of the surface of the main frame, a support height adjusting assembly is arranged at the circular hole and the bottom of the main frame, the clamping assembly comprises a pair of fixed sleeve frames, the fixed sleeve frames are horizontally fixed at two ends of the surface of the main frame, the surface of the main frame is provided with a fixed block, the fixed block is located at the center position of the surface of the main frame, a pair of first connecting rods are arranged on the end faces of the two sides of the fixed block, and the one end of the pair of first connecting rods is movably sleeved with a movable sleeve frame. Through the above technical scheme, the technical problem that the positioning device of most numerical control grinding machines in the prior art can only clamp one disc-shaped workpiece for processing at a time is solved.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of automotive parts processing, and more specifically, to an automotive parts positioning structure for a CNC grinding machine. Background Technology

[0002] In the mass production of automotive parts, the machining efficiency of CNC grinding machines for disc-shaped workpieces such as brake discs and flanges is crucial. To increase production capacity, it is necessary to grind multiple disc-shaped workpieces simultaneously, but existing positioning structures have significant limitations when clamping multiple workpieces in the horizontal direction.

[0003] Currently, most CNC grinding machines' positioning devices can only clamp one disc-shaped workpiece at a time. If multiple workpieces are stacked, traditional radial or axial clamping methods can easily lead to uneven force distribution between the workpieces, causing misalignment or deformation, and failing to guarantee machining accuracy. Although some machines have added multiple independent chucks, their positions are fixed and adjustments are cumbersome, making it difficult to adapt to workpieces of different diameters. Furthermore, the poor synchronization of multiple chucks can easily cause positional deviations due to vibration during grinding.

[0004] Furthermore, the traditional structure lacks a unified horizontal reference surface, and the inconsistent installation heights of multiple workpieces lead to differences in grinding amounts, increasing the workload of subsequent sorting processes. This single-workpiece processing mode results in low equipment utilization and cannot meet the timeliness requirements of mass production. There is an urgent need for a positioning structure that can stably clamp multiple disc-shaped workpieces in the horizontal direction and facilitate simultaneous processing. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a positioning structure for automotive parts for CNC grinding machines, which solves the technical problem that the positioning devices of most existing CNC grinding machines can only clamp one disc-shaped workpiece at a time for processing.

[0006] According to one aspect, at least one embodiment of this disclosure provides a positioning structure for automotive parts in a CNC grinding machine, comprising: The main frame and a pair of rectangular openings, the rectangular openings being formed at both ends of the surface of the main frame; A clamping assembly is disposed on the main frame; Two pairs of circular holes and a support height adjustment component are provided. The two pairs of circular holes are respectively opened at both ends of the surface of the main frame, and the support height adjustment component is disposed between the circular holes and the bottom of the main frame. The clamping assembly includes a pair of fixed sleeves, which are horizontally fixed at both ends of the main frame surface. A fixing block is provided on the main frame surface, and the fixing block is located at the center of the main frame surface. A pair of first connecting rods are provided on both ends of the fixing block, and a movable sleeve is movably connected to one end of each pair of first connecting rods.

[0007] As a further technical solution, springs are fitted on the first connecting rods, a pair of guide rods are provided in the rectangular opening, and a moving block is slidably connected to the guide rods. Telescopic cylinders are provided on both sides of the main frame.

[0008] As a further technical solution, the output end of the telescopic cylinder is fixedly connected to the moving block, and both sides of the moving block are rotatably connected to the movable sleeves on both sides via pins.

[0009] As a further technical solution, the support height adjustment assembly includes two pairs of fixed rods, which are respectively fixed to the bottom ends of the main frame, and a connecting plate is movably fitted on each pair of fixed rods.

[0010] As a further technical solution, both ends of the main frame are connected to studs by threaded engagement. The lower end of the stud is connected to the connecting plate by threaded engagement. Both ends of the surface of the connecting plate are provided with columns, and the upper end of the columns is provided with a support plate, which is located in the circular hole.

[0011] As a further technical solution, several support legs are provided at both ends of the bottom of the main frame, and a pair of fixing holes are opened at the bottom of the support legs.

[0012] As a further technical solution, a second connecting rod is provided at both ends of the side surface of the fixed sleeve, and one end of the second connecting rod is connected to the movable sleeve in a movable assembly.

[0013] As a further technical solution, both the fixed sleeve and the movable sleeve have a double-segment arc transition structure on their surfaces.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the clamping assembly solves the problem of clamping multiple workpieces simultaneously through a synchronous linkage design. A telescopic cylinder drives a moving block, which, via a connecting rod, moves a movable sleeve closer to a fixed sleeve. A spring provides cushioning to prevent workpiece deformation. The double-segment arc surface increases the contact area, ensuring uniform force distribution across multiple workpieces. This structure enables the clamping of multiple workpieces at once and is adaptable to different diameter specifications, improving processing efficiency, reducing time wasted on frequent clamping, and meeting the needs of mass production. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; In the diagram: 1. Main frame; 2. Rectangular opening; 3. Round hole; 4. Clamping assembly; 4-1. Fixed sleeve; 4-2. Fixed block; 4-3. First connecting rod; 4-4. Movable sleeve; 4-5. Spring; 4-6. Guide rod; 4-7. Moving block; 4-8. Telescopic cylinder; 4-9. Connecting rod; 5. Support height adjustment assembly; 5-1. Fixed rod; 5-2. Connecting plate; 5-3. Stud; 5-4. Column; 5-5. Support plate; 6. Support leg; 7. Fixed hole; 8. Second connecting rod. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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, they should not be construed as limitations on this disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-3 As shown, it illustrates a positioning structure for automotive parts in a CNC grinding machine according to an embodiment of the present disclosure, comprising: The main frame 1 and a pair of rectangular openings 2 are formed at both ends of the surface of the main frame 1; Clamping assembly 4, which is disposed on the main frame 1; Two pairs of circular holes 3 and a support height adjustment component 5 are provided. The two pairs of circular holes 3 are respectively opened at both ends of the surface of the main frame 1, and the support height adjustment component 5 is provided at the circular holes 3 and the bottom of the main frame 1. The clamping assembly 4 includes a pair of fixed sleeves 4-1, which are horizontally fixed at both ends of the surface of the main frame 1. A fixing block 4-2 is provided on the surface of the main frame 1, and the fixing block 4-2 is located at the center of the surface of the main frame 1. A pair of first connecting rods 4-3 are provided on both ends of the fixing block 4-2. One end of the pair of first connecting rods 4-3 is movably connected to a movable sleeve 4-4. A spring 4-5 is installed on each of the first connecting rods 4-3. A pair of guide rods 4-6 are provided in the rectangular opening 2. A moving block 4-7 is slidably connected to the guide rods 4-6. Telescopic cylinders 4-8 are provided on both sides of the surface of the main frame 1. The output end of the telescopic cylinder 4-8 is fixedly connected to the moving block 4-7. Both sides of the moving block 4-7 are rotatably connected to the movable sleeves 4-4 on both sides by a pin shaft with a connecting rod 4-9.

[0024] In some examples, to achieve synchronous clamping and positioning of multiple disc-shaped workpieces, a clamping assembly 4 is designed. This assembly includes fixed sleeves 4-1 at both ends of the surface of the main frame 1, which are horizontally fixed by welding. A fixed block 4-2 at the center of the surface of the main frame 1 is welded to the frame body. First connecting rods 4-3 on both sides are horizontally distributed and movably fitted with movable sleeves 4-4. A spring 4-5 on the rod body abuts against the fixed block 4-2 at one end and against the movable sleeve 4-4 at the other end, always applying an outward elastic force to the movable sleeve 4-4. A guide rod 4-6 inside the rectangular opening 2 is horizontally fixed. A moving block 4-7 is slidably fitted onto the guide rod 4-6 via a sliding sleeve. Telescopic cylinders 4-8 on both sides of the main frame 1 are fixed by brackets, and their output ends are welded to the moving block 4-7, which can push the moving block 4-7 to slide along the guide rod 4-6. Connecting rods 4-9 on both sides of the moving block 4-7 are rotatably connected to the moving block 4-7 and the movable sleeve 4-4 respectively via pins, forming a linkage transmission structure.

[0025] During operation, multiple disc-shaped workpieces are placed sequentially between the fixed sleeve 4-1 and the movable sleeve 4-4. The telescopic cylinder 4-8 is activated to retract, pulling the moving block 4-7 along the guide rod 4-6 towards the center of the main frame 1. The connecting rod 4-9 pushes the movable sleeve 4-4 to compress the spring 4-5, bringing it closer to the fixed sleeve 4-1 until the fixed sleeve 4-1 and the movable sleeve 4-4 clamp the workpieces. The elasticity of the spring 4-5 buffers the clamping force, preventing over-clamping and workpiece deformation. When releasing, the telescopic cylinder 4-8 extends, and the spring 4-5 pushes the movable sleeve 4-4 back to its original position, facilitating workpiece loading and unloading. The drive mechanism of the telescopic cylinder 4-8 automates the clamping action, improving operational efficiency. The guide rod 4-6 provides a smooth sliding guide for the moving block 4-7, ensuring synchronous movement of the movable sleeves 4-4 on both sides. The elastic support of the spring 4-5 allows the clamping force to adapt to differences in workpiece size, simultaneously clamping multiple workpieces and protecting the workpiece surface from damage. This component combines pneumatic drive with elastic linkage to achieve stable clamping of multiple disc-shaped workpieces, adapting to batch processing needs.

[0026] like Figures 1-3 As shown in the figure, the support height adjustment component 5 proposed in this embodiment includes two pairs of fixing rods 5-1. The two pairs of fixing rods 5-1 are respectively fixed at both ends of the bottom of the main frame 1. A connecting plate 5-2 is movably fitted on each pair of fixing rods 5-1. The two ends of the main frame 1 are connected to the studs 5-3 by threaded engagement. The lower end of the stud 5-3 is connected to the connecting plate 5-2 by threaded engagement. The two ends of the surface of the connecting plate 5-2 are provided with columns 5-4. The upper end of the column 5-4 is provided with a support plate 5-5. The support plate 5-5 is located in the circular hole 3.

[0027] In some examples, to achieve height adjustment and stable support for disc-shaped workpieces, a support height adjustment component 5 is designed. This component includes vertically welded fixing rods 5-1 at both ends of the bottom of the main frame 1. A connecting plate 5-2 is movably fitted onto the fixing rods 5-1 through through holes, allowing it to slide vertically along the rods. Studs 5-3 at both ends inside the main frame 1 are connected by threads, extending to the bottom of the main frame 1 and engaging with threaded holes on the surface of the connecting plate 5-2 to form a spiral lifting structure. Vertical columns 5-4 at both ends of the connecting plate 5-2 are vertically welded, and a support plate 5-5 at the upper end is welded to the columns 5-4 and located within a circular hole 3 on the surface of the main frame 1, supporting the workpiece from below. The cooperation between the fixing rods 5-1 and the connecting plate 5-2 ensures that the support plate 5-5 remains horizontal during lifting, preventing the workpiece from tilting.

[0028] During operation, the handwheel is rotated to drive the stud 5-3 to rotate according to the workpiece thickness and processing requirements. Under the action of the thread, the connecting plate 5-2 rises and falls vertically along the fixed rod 5-1, and the column 5-4 drives the support plate 5-5 to rise and fall synchronously. After adjusting to the appropriate height, the support plate 5-5 extends from the round hole 3, supporting the bottom of the disc-shaped workpiece. The coordinated action of multiple support plates 5-5 ensures that the workpiece remains horizontal in the clamped state, avoiding deformation due to gravity during processing. The threaded transmission structure allows for precise and controllable height adjustment, adapting to disc-shaped workpieces of different thicknesses. The guiding action of the fixed rod 5-1 ensures smooth lifting and lowering of the support plate 5-5, improving positioning accuracy. The anti-slip texture of the support plate 5-5 enhances friction with the workpiece, preventing workpiece slippage during processing. The handwheel design makes adjustment convenient and can be completed without additional tools. This component, through the combination of threaded adjustment and synchronous support, achieves flexible adjustment and stable support of the workpiece height, ensuring the processing accuracy of the CNC grinding machine.

[0029] For example, such as Figure 1 As shown, the main frame 1 has several support legs 6 at both ends of its bottom, and the support legs 6 have a pair of fixing holes 7 at their bottom.

[0030] In some examples, several support legs 6 at both ends of the bottom of the main frame 1 are welded and fixed to the main frame 1, and the fixing holes 7 at the bottom can be bolted to the ground or equipment table. The support legs 6 can raise the main frame 1, preventing the bottom components from being corroded by ground moisture, and at the same time enhancing the overall stability. The fixing holes 7 can firmly fix the main frame 1, preventing positional displacement due to vibration during processing, ensuring workpiece positioning accuracy, and meeting the stable operation requirements of CNC grinding machines.

[0031] For example, such as Figure 1 As shown, a second connecting rod 8 is provided at both ends of the side surface of the fixed sleeve 4-1, and one end of the second connecting rod 8 is connected to the movable sleeve 4-4 in a movable assembly.

[0032] In some examples, the second connecting rods 8 at both ends of the side surface of the fixed sleeve 4-1 extend horizontally and are connected to the movable sleeve 4-4 in a movable assembly. The second connecting rods 8 and the first connecting rod 4-3 form a double guide, ensuring that the movable sleeve 4-4 slides smoothly in the horizontal direction during movement, avoiding tilting or jamming. The double guide structure enhances the movement stability of the movable sleeve 4-4, ensures its precise alignment with the fixed sleeve 4-1, improves the clamping effect on the workpiece, and adapts to the stable clamping of batches of workpieces.

[0033] For example, such as Figure 1 As shown, both the fixed sleeve 4-1 and the movable sleeve 4-4 have a double-segment arc transition structure on their surfaces.

[0034] In some examples, the double-segment arc-shaped transition structure on the surfaces of the fixed sleeve 4-1 and the movable sleeve 4-4 is adapted to the outer circumference of the disc-shaped workpiece. This structure increases the contact area with the workpiece, disperses the clamping force, and avoids excessive local stress on the workpiece, which could lead to deformation. At the same time, the arc-shaped transition reduces scratches on the workpiece surface, ensures workpiece machining quality, and adapts to the clamping requirements of disc-shaped workpieces of different diameters.

[0035] In practical use: Multiple disc-shaped workpieces are placed sequentially between the fixed sleeve 4-1 and the movable sleeve 4-4. The rotating stud 5-3, via the connecting plate 5-2, causes the column 5-4 and support plate 5-5 to rise from the circular hole 3, adjusting to a suitable height to lift the workpieces. The telescopic cylinder 4-8 retracts, pulling the moving block 4-7 along the guide rod 4-6. The connecting rod 4-9 pushes the movable sleeve 4-4 to compress the spring 4-5, bringing it closer to the fixed sleeve 4-1. The double-section arc-shaped surface fits against the workpiece, achieving synchronous clamping, while the spring 4-5 provides cushioning to prevent over-clamping. After processing, the telescopic cylinder 4-8 extends, the spring 4-5 pushes the movable sleeve 4-4 back to its original position, and the reverse rotation of the stud 5-3 lowers the support plate 5-5, allowing the workpiece to be removed. This process achieves stable positioning and synchronous processing of multiple workpieces throughout.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A positioning structure for automotive parts used in a CNC grinding machine, characterized in that, include: The main frame (1) and a pair of rectangular openings (2) are formed at both ends of the surface of the main frame (1); Clamping assembly (4) is disposed on the main frame (1); Two pairs of round holes (3) and a support height adjustment component (5), the two pairs of round holes (3) are respectively opened at both ends of the surface of the main frame (1), and the support height adjustment component (5) is set at the round holes (3) and the bottom of the main frame (1); The clamping assembly (4) includes a pair of fixed sleeves (4-1), which are horizontally fixed at both ends of the surface of the main frame (1). A fixing block (4-2) is provided on the surface of the main frame (1). The fixing block (4-2) is located at the center of the surface of the main frame (1). A pair of first connecting rods (4-3) are provided on both ends of the fixing block (4-2). A movable sleeve (4-4) is movably connected to one end of the pair of first connecting rods (4-3).

2. The automotive parts positioning structure for a CNC grinding machine according to claim 1, characterized in that, Springs (4-5) are fitted on the first connecting rod (4-3). A pair of guide rods (4-6) are provided in the rectangular opening (2). A moving block (4-7) is slidably fitted on the guide rod (4-6). Telescopic cylinders (4-8) are provided on both sides of the main frame (1).

3. The automotive parts positioning structure for a CNC grinding machine according to claim 2, characterized in that, The output end of the telescopic cylinder (4-8) is fixedly connected to the movable block (4-7), and both sides of the movable block (4-7) are rotatably connected to the movable sleeves (4-4) on both sides via pins with connecting rods (4-9).

4. The automotive parts positioning structure for a CNC grinding machine according to claim 1, characterized in that, The support height adjustment assembly (5) includes two pairs of fixing rods (5-1), which are respectively fixed at both ends of the bottom of the main frame (1). Each pair of fixing rods (5-1) is movably fitted with a connecting plate (5-2).

5. A positioning structure for automotive parts in a CNC grinding machine according to claim 4, characterized in that, Both ends of the main frame (1) are connected to studs (5-3) by threaded engagement. The lower end of the studs (5-3) is connected to the connecting plate (5-2) by threaded engagement. Both ends of the surface of the connecting plate (5-2) are provided with columns (5-4). The upper end of the columns (5-4) is provided with a support plate (5-5). The support plate (5-5) is located in the circular hole (3).

6. The automotive parts positioning structure for a CNC grinding machine according to claim 1, characterized in that, The main frame (1) has several support legs (6) at both ends of its bottom, and a pair of fixing holes (7) are provided at the bottom of the support legs (6).

7. A positioning structure for automotive parts in a CNC grinding machine according to claim 1, characterized in that, The fixed sleeve (4-1) has a second connecting rod (8) at both ends of its side surface, and one end of the second connecting rod (8) is connected to the movable sleeve (4-4) in a movable fit.

8. A positioning structure for automotive parts in a CNC grinding machine according to claim 7, characterized in that, Both the fixed sleeve (4-1) and the movable sleeve (4-4) have a double-segment arc transition structure on their surfaces.

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