A surface polishing device for steel castings

Abstract

The utility model belongs to the field of polishing equipment, and discloses a surface polishing device for steel castings, including an operating table, a gear box fixed to the bottom of the operating table, a polishing belt device and a polishing wheel device installed on the top of the gear box, the polishing belt device and the polishing wheel device are located above the operating table, and a motor is installed at the bottom of the gear box; the gear box includes a box body, a central gear is arranged in the box body, two large gears and two small gears are respectively meshed outside the central gear, and the motor output shaft is coaxially connected with the central gear and the polishing wheel device; the polishing belt device includes a large gear rotating wheel, a large gear rotating wheel is coaxially fixed to the top of the large gear, a small gear rotating wheel is coaxially fixed to the top of the small gear, two large gear rotating wheels are equipped with slow polishing belts, and two small gear rotating wheels are equipped with fast polishing belts. The utility model solves the problems of single function and low polishing efficiency of the polishing machine, and has the characteristics of diverse functions and multiple function options.

Description

Technical Field

[0001] The utility model belongs to the field of polishing equipment, in particular to a surface polishing device for steel castings. Background Art

[0002] Surface polishing of steel castings is a key surface treatment step, which aims to improve the smoothness, glossiness, corrosion resistance, wear resistance and pollution resistance of the casting surface. The high and low speeds of the polishing machine have different functions. The low speed increases the friction between the grinding disc and the material, which helps to quickly reduce the uneven points on the surface of the material. The high speed can quickly process a large area of ​​material and improve production efficiency. The existing polishing machine has a relatively single function, and it is not convenient to quickly switch between high and low speed polishing functions, which affects the polishing efficiency of the workpiece.

[0003] The utility model patent with the publication number CN216228699U discloses a surface polishing device for steel castings, including an operating table, a plurality of supporting legs are fixedly connected to the bottom side wall of the operating table, a sliding mechanism is provided on the upper side wall of the operating table, a first polishing mechanism is provided on the upper side wall of the operating table, a connecting plate is fixedly connected to the upper side wall of the operating table, and a second polishing mechanism is provided on the side wall of the connecting plate. The rotation of the large turntable and the small turntable of the utility model both drive the connecting rod and the grinding disc to rotate, and the workpiece is polished. Polishing tools with different rotation speeds can be selected according to the polishing requirements, or rough polishing can be performed on the polishing tool of the small turntable with a faster rotation speed first, and then fine polishing can be performed on the polishing tool where the large turntable is located, so as to improve the polishing quality of the workpiece, meet more polishing requirements, and do not need to replace the polishing machine, which saves time and effort, and improves work efficiency and polishing speed. However, the large turntable and the small turntable are not efficient in the polishing process of large planes of steel castings. Utility Model Content

[0004] The utility model aims to provide a surface polishing device for steel castings, so as to solve the problems of single polishing function and low polishing efficiency of steel castings in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A surface polishing device for steel castings comprises an operating table, a gear box is fixed to the bottom surface of the operating table, a polishing belt device and a polishing wheel device are installed on the top of the gear box, the polishing belt device and the polishing wheel device are located above the operating table, and a motor is installed at the bottom of the gear box; the gear box comprises a box body, a central gear, a large gear, and a small gear, the box body is fixed to the bottom surface of the operating table, a central gear is arranged in the box body, two large gears and two small gears are respectively meshed outside the central gear, the motor is fixed to the bottom surface of the box body with bolts, and the motor output shaft is coaxially connected with the central gear and the polishing wheel device; the polishing belt device comprises a large gear rotating wheel, a small gear rotating wheel, a slow polishing belt, and a fast polishing belt, a large gear rotating wheel is coaxially fixed to the top of the large gear, a small gear rotating wheel is coaxially fixed to the top of the small gear, the two large gear rotating wheels are equipped with slow polishing belts, and the two small gear rotating wheels are equipped with fast polishing belts.

[0007] Preferably, the polishing wheel device includes a central shaft, a guide strip, a telescopic polishing wheel, a guide groove, a wave ring, a fixed column, and a fixed ball. The central shaft rotates synchronously with the central gear and the motor output shaft. A guide strip is axially fixed to the outer wall of the central shaft. A guide groove runs through the telescopic polishing wheel. The telescopic polishing wheel cooperates with the guide strip via the guide groove and rotates synchronously with the central shaft. A wave ring is fixed on the bottom circumference of the telescopic polishing wheel. The fixed column is fixed to the operating table and a fixed ball is integrally formed on the top. The fixed ball slides along the bottom surface contour of the wave ring, and the telescopic polishing wheel is slidably connected along the direction of the guide strip via the guide groove.

[0008] Preferably, a top plate is fixed by bolts on the top of the central shaft, and a spring is installed between the top plate and the telescopic polishing wheel to apply a downward elastic force to the telescopic polishing wheel.

[0009] Preferably, an upper operating table is fixed on the top of the operating table, a center opening is opened in the center of the upper operating table, the telescopic polishing wheel is located in the center opening and is raised and lowered, a measuring port groove is passed through the front and back of the upper operating table, and the fast polishing belt and the slow polishing belt are located in front and back of the measuring port groove.

[0010] Preferably, the center opening is consistent with the contour of the telescopic polishing wheel and is a circular hole.

[0011] Preferably, the distance between the center opening and the telescopic polishing wheel is 2-5 mm.

[0012] Preferably, the fixing column and the fixing ball are made of stainless steel.

[0013] The utility model has the following beneficial effects:

[0014] 1. The slow polishing belt can be equipped with a rougher abrasive belt for rough polishing to make the workpiece smooth. The fast polishing belt can be equipped with a rougher abrasive belt for fine polishing to increase the brightness of the workpiece. In addition, the slow polishing belt and the fast polishing belt can polish a large area of ​​a large-volume steel casting with a large surface to speed up the polishing efficiency. The polishing wheel device can polish the designated position on the surface of a small-volume steel casting. It has various functions and many options.

[0015] 2. The telescopic polishing wheel has a telescopic function, which replaces the manual swing workpiece polishing effect, speeds up the workpiece surface polishing efficiency, makes the polishing more uniform, and saves manual labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the connection between the gear box and the polishing belt device of the utility model;

[0019] Figure 4 It is a side view of the polishing wheel device of the utility model;

[0020] Figure 5 This is a schematic diagram of the assembly of the polishing wheel device of the utility model;

[0021] Icons: 1. Operating table; 2. Gear box; 201. Box body; 202. Center gear; 203. Large gear; 204. Small gear; 3. Polishing belt device; 301. Large gear wheel; 302. Small gear wheel; 303. Slow polishing belt; 304. Fast polishing belt; 4. Polishing wheel device; 401. Center axis; 402. Guide strip; 403. Telescopic polishing wheel; 404. Guide groove; 405. Wave ring; 406. Fixed column; 407. Fixed ball; 408. Top plate; 409. Spring; 5. Motor; 6. Upper operating table; 601. Center mouth; 602. Side mouth groove. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-5 As shown, in this embodiment, a surface polishing device for a steel casting includes an operating table 1, a gear box 2 is fixed to the bottom surface of the operating table 1, a polishing belt device 3 and a polishing wheel device 4 are installed on the top of the gear box 2, the polishing belt device 3 and the polishing wheel device 4 are located above the operating table 1, the polishing belt and the polishing wheel have a multifunctional polishing selection mode, and a motor 5 is installed at the bottom of the gear box 2; the gear box 2 includes a box body 201, a central gear 202, a large gear 203, and a small gear 204, and the box body 201 and the operating table 1 are fixed to the bottom surface of the gear box 2. The bottom surface of the table 1 is fixed, and a central gear 202 is arranged in the box 201. Two large gears 203 and two small gears 204 are respectively meshed outside the central gear 202. The rotation speed of the large gear 203 and the small gear 204 is changed by the gear connection mode. The motor 5 is bolted to the bottom surface of the box 201, and the output shaft of the motor 5 is coaxially connected with the central gear 202 and the polishing wheel device 4; the polishing belt device 3 includes a large gear rotating wheel 301, a small gear rotating wheel 302, a slow polishing belt 303, and a fast polishing belt 304. A large gear wheel 301 is coaxially fixed on the top of the large gear 203, and a small gear wheel 302 is coaxially fixed on the top of the small gear 204. The two large gear wheels 301 are equipped with a slow polishing belt 303. The slow polishing belt 303 can be equipped with a rougher abrasive belt. The rougher abrasive belt has a large friction force on the surface of the workpiece, and the workpiece with more depressions is roughly polished. Due to the slow speed and strong controllability, the workpiece is prevented from being sunken due to excessive speed and being unable to be repaired. The two small gear wheels 302 are equipped with a fast polishing belt 304 for fast polishing. Belt 304 can be equipped with a rougher abrasive belt. The rougher abrasive belt has less friction on the workpiece surface, and can be used to finely polish the workpiece with a smoother surface. The speed is fast, so the workpiece polishing efficiency is high and the brightening effect is quickly achieved. Through the large gear 203 and the small gear 204 with different speeds, the slow polishing belt 303 and the fast polishing belt 304 can have different speeds, which increases the selectivity of workpiece polishing. In addition, the slow polishing belt 303 and the fast polishing belt 304 are more suitable for large-area polishing of large flat surfaces of workpieces, and have higher flat surface polishing efficiency than polishing wheels.

[0025] Specifically, the polishing wheel device 4 includes a central shaft 401, a guide strip 402, a telescopic polishing wheel 403, a guide groove 404, a wave ring 405, a fixed column 406, and a fixed ball 407. The central shaft 401 rotates synchronously with the central gear 202 and the output shaft of the motor 5. The outer wall of the central shaft 401 is axially fixed with a guide strip 402. The telescopic polishing wheel 403 is penetrated by a guide groove 404. The telescopic polishing wheel 403 cooperates with the guide strip 402 through the guide groove 404 and rotates synchronously with the central shaft 401 to achieve the polishing effect of the telescopic polishing wheel 403, and can selectively polish the surface of a small workpiece or the curved surface of a large workpiece. A wave ring 405 is fixed on the bottom circumference of the polishing wheel 403, the fixed column 406 is fixed to the operating table 1, and a fixed ball 407 is integrally formed on the top, the fixed column 406 and the fixed ball 407 are made of stainless steel, and the fixed ball 407 slides along the bottom surface contour of the wave ring 405. The stainless steel fixed ball 407 has rigidity and wear resistance, so that the fixed ball 407 is smoother when contacting and sliding with the wave ring 405. The telescopic polishing wheel 403 is slidably connected along the direction of the guide bar 402 through the guide groove 404, so as to realize the up and down telescopic function of the telescopic polishing wheel 403, replace the role of manual sliding of the workpiece, so as to polish the workpiece evenly and save manual labor.

[0026] A top plate 408 is bolted to the top of the central axis 401, and a spring 409 is installed between the top plate 408 and the telescopic polishing wheel 403 to apply a downward elastic force to the telescopic polishing wheel 403, so that the fixed ball 407 can slide close to the bottom surface contour of the wave ring 405, thereby preventing the wave ring 405 from being separated from the fixed ball 407 due to the telescopic polishing wheel 403 rotating too fast.

[0027] Specifically, an upper operating table 6 is fixed on the top of the operating table 1, and a center opening 601 is opened in the center of the upper operating table 6. The telescopic polishing wheel 403 is located in the center opening 601 and is raised and lowered, so that when the workpiece is polished using the telescopic polishing wheel 403, it can be done on the upper operating table 6, which plays a role in supporting the workpiece and also avoids the contact between the hands of the staff and the fast polishing belt 304 and the slow polishing belt 303, thereby increasing the safety of operation. The upper operating table 6 is penetrated by a side opening groove 602 at the front and back, and the fast polishing belt 304 and the slow polishing belt 303 are located at the front and back positions of the side opening groove 602 to meet the polishing conditions of the workpiece.

[0028] Specifically, the center opening 601 is consistent with the outline of the telescopic polishing wheel 403 and is a circular hole. The spacing between the center opening 601 and the telescopic polishing wheel 403 is 2-5 mm to avoid excessive gap between the center opening 601 and the telescopic polishing wheel 403, thereby preventing the upper operating table 6 from losing the function of carrying the workpiece.

[0029] When in use, the motor 5 is started to drive the central gear 202 to rotate. The central gear 202 causes the large gear 203 and the small gear 204 to rotate synchronously respectively, and drives the slow polishing belt 303 and the fast polishing belt 304 to run. The workpiece with more large planes and more surface depressions or particles is placed on the rear side of the operating table 1. The workpiece is first roughly polished on the slow polishing belt 303 to make the surface smooth, and then finely polished on the front side of the fast polishing belt 304 to make the surface bright; the central axis 401 is coaxially driven by the motor 5. During the rotation of the telescopic polishing wheel 403, the wave ring 405 is supported by the fixed ball 407 and is compressed by the spring 409, so that the telescopic polishing wheel 403 can stably reciprocate up and down. Small workpieces can be placed on the upper operating table 6 and their surfaces are polished using the telescopic polishing wheel 403.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface polishing device for steel castings, comprising an operating table (1), characterized in that: A gear box (2) is fixed to the bottom surface of the operating table (1); a polishing belt device (3) and a polishing wheel device (4) are installed on the top of the gear box (2); the polishing belt device (3) and the polishing wheel device (4) are located above the operating table (1); and a motor (5) is installed at the bottom of the gear box (2); The gear box (2) comprises a box body (201), a central gear (202), a large gear (203), and a small gear (204); the box body (201) is fixed to the bottom surface of the operating table (1); the box body (201) is provided with a central gear (202); two large gears (203) and two small gears (204) are respectively meshed outside the central gear (202); the motor (5) is fixed to the bottom surface of the box body (201) by bolts; and the output shaft of the motor (5) is coaxially connected to the central gear (202) and the polishing wheel device (4); The polishing belt device (3) comprises a large gear rotating wheel (301), a small gear rotating wheel (302), a slow polishing belt (303), and a fast polishing belt (304); the large gear rotating wheel (301) is coaxially fixed on the top of the large gear (203); the small gear rotating wheel (302) is coaxially fixed on the top of the small gear (204); the two large gear rotating wheels (301) are equipped with the slow polishing belts (303); and the two small gear rotating wheels (302) are equipped with the fast polishing belts (304).

2. A steel casting surface polishing device according to claim 1, characterized in that: The polishing wheel device (4) comprises a central shaft (401), a guide strip (402), a telescopic polishing wheel (403), a guide groove (404), a wave ring (405), a fixing column (406), and a fixing ball (407); the central shaft (401) rotates synchronously with the central gear (202) and the output shaft of the motor (5); the guide strip (402) is axially fixed to the outer wall of the central shaft (401); the guide groove (404) runs through the telescopic polishing wheel (403); (403) cooperates with the guide bar (402) through the guide groove (404) and rotates synchronously with the central axis (401); a wave ring (405) is fixed on the bottom circumference of the telescopic polishing wheel (403); the fixed column (406) is fixed to the operating table (1), and a fixed ball (407) is integrally formed on the top; the fixed ball (407) slides along the bottom surface contour of the wave ring (405); the telescopic polishing wheel (403) is slidably connected along the direction of the guide bar (402) through the guide groove (404).

3. A steel casting surface polishing device according to claim 2, characterized in that: A top plate (408) is bolted to the top of the central shaft (401), and a spring (409) is installed between the top plate (408) and the telescopic polishing wheel (403) to apply a downward elastic force to the telescopic polishing wheel (403).

4. A steel casting surface polishing device according to claim 3, characterized in that: An upper operating platform (6) is fixed on the top of the operating platform (1), a central opening (601) is opened in the center of the upper operating platform (6), the telescopic polishing wheel (403) is located in the central opening (601) and is lifted and lowered, a side opening groove (602) is passed through the front and rear of the upper operating platform (6), and the fast polishing belt (304) and the slow polishing belt (303) are located in front and rear positions of the side opening groove (602).

5. A steel casting surface polishing device according to claim 4, characterized in that: The central opening (601) is consistent with the outline of the telescopic polishing wheel (403) and is a circular hole.

6. A steel casting surface polishing device according to claim 5, characterized in that: The distance between the central opening (601) and the telescopic polishing wheel (403) is 2-5 mm.

7. A steel casting surface polishing device according to claim 2, characterized in that: The fixing column (406) and the fixing ball (407) are made of stainless steel.

Images