Crankshaft machining and polishing device

Abstract

The utility model discloses a crankshaft machining and polishing device. The crankshaft machining and polishing device comprises a workbench, a moving mechanism and a rotating mechanism are arranged at the upper end of the workbench, a fixing frame is arranged at the upper end of the moving mechanism, the fixing frame is fixed to a polishing mechanism, the polishing mechanism comprises a rotating motor, the output end of the rotating motor is connected with a rotating wheel, the rotating wheel is connected with an abrasive belt, and the abrasive belt is connected with the rotating motor. A downward pressing assembly is arranged on the upper end face of the fixing frame and comprises a threaded rotating rod, and a pushing plate is installed at the lower end of the threaded rotating rod. According to the crankshaft machining and polishing device, local abrasive belts can be tightly attached to the crankshaft through the downward pressing assembly, gaps are prevented from being formed between the abrasive belts and the crankshaft, in the actual use process, the threaded rotating rod is rotated to drive the pushing plate to press downwards, and compared with manual handheld pressure adjustment, the polishing efficiency is greatly improved. In this way, the abrasive belt can be better attached to the crankshaft, and therefore the better polishing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing processing, in particular to a crankshaft processing and polishing device. Background Art

[0002] The crankshaft processing and polishing device is a device used for crankshaft processing. It is mainly used to process the crankshaft to the final size and position size, remove the processing allowance after grinding, and meet the requirements of the crankshaft on roundness and roughness.

[0003] When processing some special crankshafts, manual polishing is required. The staff fixes the crankshaft on the workbench, then turns on the motor, lets the sanding belt start rotating, places the sanding machine on the crankshaft, and polishes it.

[0004] However, when polishing the crankshaft, the crankshaft is polished by the sanding belt in the sanding machine. During the polishing process, the staff needs to apply a certain amount of pressure to the sanding machine to make the sanding belt at the polishing point closely contact with the crankshaft. When the sanding machine is working, it is difficult for the staff to keep the sanding machine balanced due to the uneven center of gravity of the sanding machine itself. If there is a gap between the sanding belt and the crankshaft, some areas on the crankshaft surface may not be fully polished, thus affecting the polishing effect.

[0005] Therefore, it is necessary to provide a crankshaft processing and polishing device to solve the above-mentioned technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a crankshaft processing and polishing device that can maintain the balance of the sanding belt when working, so that the sanding belt is close to the crankshaft, ensuring uniform fit between them, thereby achieving better polishing effect.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The crankshaft processing and polishing device comprises: a workbench, a moving mechanism and a rotating mechanism are provided at the upper end of the workbench, a fixed frame is provided at the upper end of the moving mechanism, the fixed frame is fixed to the polishing mechanism, the polishing mechanism comprises: a rotating motor, the output end of the rotating motor is connected to a rotating wheel, the rotating wheel is connected to an abrasive belt, and a pressing assembly is provided on the upper end surface of the fixed frame, the pressing assembly comprises: a threaded rotating rod, and a pushing plate is installed at the lower end of the threaded rotating rod.

[0009] Preferably, a protective frame is fixedly provided on the upper end of the threaded rotating rod, and the protective frame is located at the lower end of the upper sanding belt.

[0010] Preferably, a spring block is provided at the lower end of the threaded rotating rod, a pressure detector is provided at the lower end of the spring block, and the pressure detector is fixed inside the frame.

[0011] Preferably, the fixing frame comprises: a limiting frame, a threaded bolt is provided at the lower end of the limiting frame, the limiting frame can be extended up and down, and the limiting frame is embedded and fixed at the upper end of the moving mechanism.

[0012] Preferably, the moving mechanism comprises: a moving platform, the moving platform is connected to the screw rod, and the moving platform is connected to guide rods at both ends, and a carrier is provided at both ends of the moving platform.

[0013] Preferably, the rotating mechanism comprises: an output end of the rotating motor is connected to a transfer bearing, and one end of the transfer bearing is provided with a limiting recessed hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model can achieve the local sanding belt close to the crankshaft by setting a downward pressing component to prevent the gap between the sanding belt and the crankshaft. In actual use, the pushing plate can be pressed down by rotating the threaded rotating rod. Compared with manual hand-held pressure adjustment, this method can better fit the sanding belt to the crankshaft, thereby achieving a better polishing effect;

[0016] (2) The utility model can effectively prevent work-related injuries by providing a protective frame. When a worker adjusts the threaded rotating rod, the protective frame can prevent the upper sanding belt from scratching the worker's hands, thereby avoiding safety hazards during work;

[0017] (3) The utility model can detect the downward pressure by setting a pressure detector. In actual use, a better pressure range can be calculated by comparing multiple downward pressure data, which provides great convenience for the process of pushing the push block backward. At the same time, through the accurate downward pressure value, the sanding belt and the crankshaft are in perfect contact, avoiding the hidden danger of poor polishing effect due to the existence of a gap between them. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the crankshaft processing and polishing device provided by the utility model;

[0019] Figure 2 A schematic diagram of the structure of the crankshaft machining and polishing device provided by the utility model from a first perspective;

[0020] Figure 3 A schematic diagram of the connection structure between the moving platform and the polishing mechanism of the crankshaft processing and polishing device provided by the utility model;

[0021] Figure 4 This is a schematic structural diagram of a pressing assembly of a crankshaft machining and polishing device provided by the utility model.

[0022] Among them, the names corresponding to the figure numbers are: 100, workbench; 200, moving mechanism; 210, carrier; 220, screw; 230, guide rod; 240, moving platform; 300, rotating mechanism; 310, rotating motor; 320, adapter bearing; 400, fixed frame; 410, limit frame; 420, threaded bolt; 500, polishing mechanism; 510, rotating motor; 520, rotating wheel; 530, sanding belt; 600, pressing assembly; 610, protective frame; 620, threaded rotating rod; 630, spring block; 631, pressure detector. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0024] First embodiment:

[0025] like Figure 1-4 As shown, the crankshaft processing and polishing device provided by the utility model includes: a workbench 100, a moving mechanism 200 and a rotating mechanism 300 are provided at the upper end of the workbench 100, a fixing frame 400 is provided at the upper end of the moving mechanism 200, and the fixing frame 400 is fixed to the polishing mechanism 500, and the polishing mechanism 500 includes: a rotating motor 510, the output end of the rotating motor 510 is connected to a rotating wheel 520, and the rotating wheel 520 is connected to an abrasive belt 530, and a pressing assembly 600 is provided on the upper end surface of the fixing frame 400, and the pressing assembly 600 includes: a threaded rotating rod 620, a threaded rotating rod A push plate 640 is installed at the lower end of 620. Since the handheld belt sander will shake during operation, it is difficult for the staff to maintain a balanced angle when holding the belt sander. In actual use, the staff places the crankshaft to be processed on the limiting recessed hole on the rotating mechanism 300 for fixation. After fixation, the power supply is started by controlling the switch, and the rotating motor 310 and the rotating motor 510 are started at the same time. When the crankshaft and the sanding belt rotate at the same time, the push plate 640 at the lower end is moved downward by rotating the threaded rotating rod 620 until the push plate 640 drives the sanding belt to fully fit the crankshaft.

[0026] The setting of the downward pressing component 600 can achieve the local sanding belt close to the crankshaft to prevent gaps between the sanding belt and the crankshaft. In actual use, the push plate 640 can be pressed down by rotating the threaded rotating rod 620. Compared with manual hand-held pressure adjustment, this method can better fit the sanding belt to the crankshaft, thereby achieving a better polishing effect.

[0027] Second embodiment:

[0028] like Figure 4As shown, a protective frame 610 is fixedly provided at the upper end of the threaded rotating rod 620, and the protective frame 610 is at the lower end of the upper sanding belt. In actual use, since the pressing assembly 600 is in the middle of the sanding belt strip, there is a safety hazard when the staff adjusts the threaded rotating rod 620. In order to prevent the staff from being scratched by the sanding belt when adjusting the threaded rotating rod 620, the protective frame 610 provided at the upper end of the threaded rotating rod 620 can protect the hands of the staff, thereby reducing safety hazards at work.

[0029] Third example:

[0030] like Figure 4 As shown, a spring block 630 is provided at the lower end of the threaded rotating rod 620, and a pressure detector 631 is provided at the lower end of the spring block 630. The pressure detector 631 is fixed inside the frame. Since the crankshafts in the batch have the same model, during the long-term polishing process, the staff can push the push plate 640 downward to make the crankshaft and the sanding belt contact better. The pressure value during the downward pressure can be measured by the set spring block 630 and the pressure detector 631. The pressure detector 631 is an existing device, and its model is MS54 series pressure detector 631. In actual use, when the threaded rotating rod 620 rotates downward, due to the downward movement of the rotating rod, the spring block 630 will follow the downward movement, and the lower end of the spring block 630 will press on the pressure detector 631 until the push plate 640 fits the crankshaft.

[0031] The pressure detector 631 can be used to detect the downward pressure. In actual use, a better pressure range can be calculated by comparing multiple downward pressure data, which provides great convenience for the process of pushing the push block 640 backward. At the same time, the accurate downward pressure value can make the sanding belt and the crankshaft in perfect contact, avoiding the hidden danger of poor polishing effect due to the gap between them.

[0032] Fourth embodiment:

[0033] like Figure 1-3 As shown, the fixed frame 400 includes: a limit frame 410, a threaded bolt 420 is provided at the lower end of the limit frame 410, the limit frame 410 can be extended and retracted up and down, and the limit frame 410 is embedded and fixed at the upper end of the moving mechanism 200. In actual use, if the height of the sanding belt is too high or too low, it will cause uneven contact between the crankshaft and the sanding belt, which can affect the polishing effect and efficiency. By setting a retractable limit frame 410, the sanding belt height can be adjusted according to different types of crankshafts, avoiding the sanding belt height being too high or too low, resulting in uneven contact between the crankshaft and the sanding belt, so that better effect can be achieved during the crankshaft polishing process.

[0034] Fifth embodiment:

[0035] like Figure 1-3As shown, the moving mechanism 200 includes: a moving platform 240, the moving platform 240 is connected to the screw rod 220, and the moving platform 240 is connected to the guide rods 230 at both ends. A carrier 210 is provided at both ends of the moving platform 240. When the handheld belt sander is polishing, the staff will move left and right to grind the crankshaft. Since the center of gravity of the handheld belt sander is offset and the belt sander has a certain recoil when working, it is difficult for the staff to control the speed of the left and right movement when moving left and right, thereby affecting the polishing accuracy of the crankshaft. The set moving mechanism 200 can make it possible to move left and right at a uniform speed during the polishing of the crankshaft. In actual use, when the motor drives the screw rod 220 to rotate, the nut will move accordingly, and a certain friction force is formed between the nut and the screw rod 220 to ensure the stable movement of the moving platform 240. Since the polishing mechanism 500 is fixed on the upper end of the moving platform 240, the polishing mechanism 500 can be moved more smoothly when moving left and right.

[0036] By providing the moving mechanism 200, during the crankshaft polishing process, the grinding belt is moved left and right at a uniform speed, so that the machining allowance on the crankshaft surface can be removed more evenly, thereby improving the roundness and roughness of the crankshaft.

[0037] Working principle: The staff places the crankshaft to be processed on the limiting recessed hole of the adapter bearing 320 on the rotating mechanism 300 for fixing. After fixing, start the power supply through the control switch, and start the rotating motor 310 and the rotating motor 510 at the same time. When the crankshaft and the abrasive belt rotate at the same time, the push plate 640 at the lower end is moved downward by rotating the threaded rotating rod 620 until the push plate 640 drives the abrasive belt to fit completely with the crankshaft, and the downward pressure is detected by the set pressure detector 631. By comparing multiple downward pressure data, a better pressure range can be calculated, which provides a precise pressure value for adjusting the downward pressure of the push block 640, so that the crankshaft and the abrasive belt fit better.

[0038] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A crankshaft processing and polishing device, characterized in that: include: A workbench (100), wherein a moving mechanism (200) and a rotating mechanism (300) are provided at the upper end of the workbench (100), a fixing frame (400) is provided at the upper end of the moving mechanism (200), the fixing frame (400) is fixed to a polishing mechanism (500), the polishing mechanism (500) comprises: a rotating motor (510), the output end of the rotating motor (510) is connected to a rotating wheel (520), the rotating wheel (520) is connected to an abrasive belt (530), and a pressing assembly (600) is provided on the upper end surface of the fixing frame (400), the pressing assembly (600) comprises: a threaded rotating rod (620), and a pushing plate (640) is installed at the lower end of the threaded rotating rod (620).

2. A crankshaft machining and polishing device according to claim 1, characterized in that: A protective frame (610) is fixedly provided on the upper end of the threaded rotating rod (620), and the protective frame (610) is located at the lower end of the upper sanding belt.

3. A crankshaft machining and polishing device according to claim 2, characterized in that: A spring block (630) is provided at the lower end of the threaded rotating rod (620), and a pressure detector (631) is provided at the lower end of the spring block (630). The pressure detector (631) is fixed inside the frame.

4. A crankshaft machining and polishing device according to claim 1, characterized in that: The fixing frame (400) comprises a limiting frame (410), a threaded bolt (420) is provided at the lower end of the limiting frame (410), the limiting frame (410) can be telescoped up and down, and the limiting frame (410) is embedded and fixed at the upper end of the moving mechanism (200).

5. A crankshaft machining and polishing device according to claim 4, characterized in that: The moving mechanism (200) comprises a moving platform (240), the moving platform (240) being connected to a screw rod (220), and the moving platform (240) being connected to guide rods (230) at both ends, and a carrier (210) being provided at both ends of the moving platform (240).

6. A crankshaft machining and polishing device according to claim 1, characterized in that: The rotating mechanism (300) comprises: an output end of a rotating motor (310) connected to a transfer bearing (320), and a limiting recessed hole is provided at one end of the transfer bearing (320).

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