A polishing device for finishing of metal castings

Abstract

The utility model discloses a polishing device for metal casting finish machining relates to metal casting polishing technical field, the utility model discloses a grinding stock storage cylinder, pressing material square tube and side pipe, the vertical sliding sleeve of grinding stock storage cylinder is connected with the output of hydraulic device in pressing material piston, and the lower end export of grinding stock storage cylinder is fixedly sleeved in pressing material square tube, and the one side wall of pressing material square tube is opened to have the article groove, and the opening one side side of side pipe is pasted in the one side outer side wall of the article groove of pressing material square tube and is opened. The utility model discloses a metal casting is put into pressing material square tube from the article groove of pressing material square tube side by the utility model discloses, and the grinding stock flow abrasive is extruded to the downward by the hydraulic press and pushes the pressing material piston, makes the grinding stock flow abrasive be extruded into pressing material square tube, and the metal casting is polished, avoids the edge and corner of wearing metal casting, and the grinding stock flow abrasive is flowed into the side pipe after making the grinding stock flow abrasive flow out from the article groove, and the downward flow along the side pipe, avoids the abrasion of grinding stock flow abrasive.

Description

Technical Field

[0001] This utility model belongs to the field of metal casting polishing technology, and in particular relates to a polishing device for precision machining of metal castings. Background Technology

[0002] After casting and cooling, metal castings will have traces left by the casting mold on their surface, requiring polishing to make the surface smooth. When using vibratory grinding and polishing to polish precision-machined metal castings, the abrasive may cause scratches on the surface, and the surface of the metal castings after vibratory grinding and polishing will still have obvious textures. In addition, the continuous collision and friction between the metal casting and the medium, and between metal castings themselves, during the vibratory grinding and polishing process will inevitably wear away sharp edges and corners, leading to dimensional changes and loss of geometric features. This is a major defect for metal castings that need to maintain sharp edges or specific ridge designs.

[0003] To address these issues, we provide a polishing apparatus for the finishing of metal castings. Utility Model Content

[0004] The purpose of this invention is to provide a polishing device for the precision machining of metal castings. A pressure tube is connected to the lower opening of an abrasive storage cylinder, allowing the abrasive stream to be loaded into the cylinder. The metal casting to be polished is placed into the pressure tube from a workpiece groove on the side of the pressure tube. A hydraulic press pushes a pressure piston inside the abrasive storage cylinder downwards to squeeze the abrasive stream into the pressure tube, polishing the metal casting and preventing wear on the edges and corners of the casting surface. A side tube is provided on one side of the pressure tube, with its open end fitting against the side of the pressure tube. This allows the abrasive stream flowing over the metal casting to exit from the workpiece groove and enter the side tube, flowing downwards along the side tube, thus preventing abrasive stream loss.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a polishing device for precision machining of metal castings, including an abrasive storage cylinder, a pressure square tube, and a side tube. A pressure piston is vertically slidably sleeved inside the abrasive storage cylinder. The upper end of the pressure piston is connected to the output end of a hydraulic device. The pressure square tube is fixedly sleeved at the lower outlet of the abrasive storage cylinder. One side of the side tube is open, and a workpiece groove is formed through one side wall of the pressure square tube. The side of the side tube with the opening is attached to the outer side wall of the pressure square tube with the workpiece groove.

[0006] A further feature of this invention is that a placement sleeve is provided on the side of the side tube away from the pressure square tube, and a pressure plate is detachably fixedly installed on the end face of the placement sleeve.

[0007] A further feature of this invention is that a ball bearing seat is fixedly installed on the side of the pressure plate near the side tube. A set of ball bearing seats is vertically arrayed and slidably sleeved on the surface of the ball bearing seat. A hemispherical ball groove is opened on the end face of the ball bearing seat near the pressure square tube. Rubber balls are rolled in the ball bearing groove on the end face of the ball bearing seat. A ball bearing sleeve is sleeved on the end face of the ball bearing seat near the pressure square tube, and the rubber balls pass through the ball bearing sleeve.

[0008] A further feature of this invention is that a guide rod is fixedly provided at the end of the ball bearing seat away from the rubber ball, the guide rod passes through the pressure plate, and a compression spring is sleeved on the outside of the guide rod, with the two ends of the compression spring respectively fixedly connected to the plate surface of the pressure plate and the end face of the ball bearing seat.

[0009] A further feature of this invention is that another set of ball bearing seats is vertically arrayed and slidably sleeved on the side wall of the pressing square tube away from the object groove. A U-shaped plate is fixedly installed on the outer side wall of the pressing square tube away from the object groove. The guide rod at the rear end of the ball bearing seat sleeved on the side wall of the pressing square tube passes through the surface of the U-shaped plate. The two ends of the compression spring sleeved on the outer side of the guide rod sleeved through the surface of the U-shaped plate are respectively fixedly connected to the inner side surface of the U-shaped plate and the outer side wall of the pressing square tube.

[0010] A further feature of this invention is that a bundle sleeve is fixedly sleeved at the lower end of the pressing square tube and the side tube, and a discharge tube is fixedly provided at the lower end of the bundle sleeve.

[0011] A further feature of this invention is that a pipe end cap is fixedly sleeved at the lower end of the discharge pipe, and an adjusting screw is threaded through the cap surface of the pipe end cap. A discharge piston is vertically slidably sleeved inside the discharge pipe, and a pressure spring is fixedly connected to the lower end of the discharge piston. A pressure spring piston is rotatably installed at the upper end of the adjusting screw. The pressure spring piston is sleeved inside the discharge pipe, and the lower end of the pressure spring is fixedly connected to the upper end face of the pressure spring piston. A return pipe is connected to the side wall of the discharge pipe.

[0012] This utility model has the following beneficial effects: 1. This utility model connects a pressure tube to the opening at the lower end of the abrasive storage cylinder, loads the abrasive stream into the abrasive storage cylinder, and places the metal casting to be polished into the pressure tube from the object groove on the side of the pressure tube. The hydraulic press pushes the pressure piston in the abrasive storage cylinder downward to squeeze the abrasive stream, so that the abrasive stream is squeezed into the pressure tube and polishes the metal casting in the pressure tube, thereby avoiding wear on the edges and corners of the metal casting surface.

[0013] 2. This utility model provides a side tube on one side of the pressure square tube, with the open end of the side tube attached to one side of the pressure square tube. This allows the abrasive material flowing through the metal casting to enter the side tube after flowing out of the workpiece groove and flow downward along the side tube, thereby avoiding the loss of the abrasive material. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a polishing device used for the precision machining of metal castings.

[0016] Figure 2 This is an exploded view of the press-fit square tube and the side tube.

[0017] Figure 3 This is a top view of the pressure square tube and the ball bearing seat.

[0018] Figure 4 This is an exploded view of the press-fit square tube and the bundled sleeve.

[0019] Figure 5 This is a cross-sectional view of the bundled sleeve.

[0020] The attached diagram lists the components represented by each number as follows: 1-Abrasive storage cylinder, 101-Pressure piston, 2-Pressure square tube, 201-Object slot, 202-U-shaped plate, 3-Side tube, 301-Placement sleeve, 301a-Pressure plate, 301b-Ball bearing seat sleeve, 301b-1-Ball bearing seat, 301b-2-Rubber ball bearing, 301b-3-Ball bearing sleeve, 301b-4-Guide rod, 301b-5-Compression spring, 302-Bundle sleeve, 302a-Discharge pipe, 302a-1-Pipe end cap, 302a-2-Adjusting screw, 302a-3-Discharge piston, 302a-4-Pressure spring, 302a-5-Compression spring piston, 302b-Return pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1, please refer to Figures 1 to 3This utility model is a polishing device for precision machining of metal castings, including an abrasive storage cylinder 1, a pressure square tube 2, and a side tube 3. The pressure square tube 2 is connected to the lower opening of the abrasive storage cylinder 1, allowing the abrasive flow to be loaded into the abrasive storage cylinder 1. The metal casting to be polished is placed into the pressure square tube 2 through the object groove 201 on the side of the pressure square tube 2. A hydraulic press pushes the pressure piston 101 inside the abrasive storage cylinder 1 downwards to squeeze the abrasive flow into the pressure square tube 2, polishing the metal casting and thus avoiding wear on the edges and corners of the metal casting surface. A side tube 3 is provided on one side of the pressure square tube 2, with the open end of the side tube 3 attached to one side of the pressure square tube 2. This allows the abrasive flow passing through the metal casting to flow out of the object groove 201 and into the side tube 3, flowing downwards along the side tube 3, thus preventing abrasive flow loss.

[0023] Specifically, a pressure piston 101 is vertically slidably sleeved inside the abrasive storage cylinder 1. The upper end of the pressure piston 101 is connected to the output end of the hydraulic device. The pressure square tube 2 is fixedly sleeved at the lower end outlet of the abrasive storage cylinder 1. One side of the side tube 3 is open. An object groove 201 is opened through one side of the tube wall of the pressure square tube 2. The side of the opening of the side tube 3 is attached to the outer side wall of the pressure square tube 2 where the object groove 201 is opened.

[0024] Furthermore, a placement sleeve 301 is provided on the side of the side tube 3 away from the pressure square tube 2. A pressure plate 301a is detachably fixed to the end face of the placement sleeve 301. The metal casting to be polished is placed into the placement sleeve 301 and the pressure plate 301a is installed on one side of the placement sleeve 301.

[0025] Furthermore, a ball bearing seat 301b is fixedly installed on the side of the pressure plate 301a near the side tube 3. A set of ball bearing seats 301b-1 are vertically arrayed and slidably sleeved on the surface of the ball bearing seat 301b. A hemispherical ball groove is opened on the end face of the ball bearing seat 301b-1 near the pressure square tube 2. Rubber balls 301b-2 are rolled in the ball bearing groove on the end face of the ball bearing seat 301b-1. A ball bearing sleeve 301b-3 is sleeved on the end face of the ball bearing seat 301b-1 near the pressure square tube 2. The rubber balls 301b-2 pass through the ball bearing sleeve 301b-3. After the pressure plate 301a is installed, the ball bearing seat 301b pushes the metal casting into the pressure square tube 2.

[0026] Furthermore, a guide rod 301b-4 is fixedly provided at the end of the ball bearing seat 301b-1 away from the rubber ball 301b-2. The guide rod 301b-4 passes through the pressure plate 301a. A compression spring 301b-5 is sleeved on the outside of the guide rod 301b-4. The two ends of the compression spring 301b-5 are respectively fixedly connected to the plate surface of the pressure plate 301a and the end face of the ball bearing seat 301b-1.

[0027] Furthermore, another set of ball bearing seats 301b-1 is vertically arrayed and slidably sleeved on the side wall of the pressure square tube 2 away from the object groove 201. A U-shaped plate 202 is fixedly installed on the outer side wall of the pressure square tube 2 away from the object groove 201. The guide rod 301b-4 at the rear end of the ball bearing seat 301b-1 sleeved on the side wall of the pressure square tube 2 passes through the plate surface of the U-shaped plate 202. The compression spring 301b-5 sleeved on the outer side of the guide rod 301b-4 sleeved through the plate surface of the U-shaped plate 202 is fixedly connected at both ends to the inner plate surface of the U-shaped plate 202 and the outer wall of the pressure square tube 2, respectively. The rubber ball 301b-2 at one end of the ball bearing seats 301b-1 on both sides clamps the metal casting in the pressure square tube 2.

[0028] The operation process in this embodiment is as follows: The metal casting to be polished is placed into the placement sleeve 301, and the pressure plate 301a is installed on one side of the placement sleeve 301. The ball bearing seat 301b pushes the metal casting into the pressure tube 2. The rubber balls 301b-2 at one end of the ball bearing seats 301b-1 on both sides hold the metal casting in the pressure tube 2. The hydraulic press pushes the pressure piston 101 in the abrasive storage cylinder 1 to squeeze the abrasive flow downward, so that the abrasive flow is squeezed into the pressure tube 2 and polishes the metal casting in the pressure tube 2, thereby avoiding wear on the edges and corners of the metal casting surface.

[0029] Example 2, please refer to Figures 1 to 5 Based on Example 1, a bundled material sleeve 302 is fixedly connected to the lower end of the pressure square tube 2 and the side tube 3. The extruded grinding flow abrasive is bundled and squeezed through the bundled material sleeve 302, so that the grinding flow abrasive polishes the metal casting in the pressure square tube 2.

[0030] Specifically, a material bundle sleeve 302 is fixedly sleeved at the lower end of the pressing square tube 2 and the side tube 3, and a discharge pipe 302a is fixedly provided at the lower end of the material bundle sleeve 302.

[0031] Furthermore, a pipe end cap 302a-1 is fixedly sleeved at the lower end of the discharge pipe 302a. An adjusting screw 302a-2 is threaded through the cap surface of the pipe end cap 302a-1. A discharge piston 302a-3 is vertically slidably sleeved inside the discharge pipe 302a. A pressure spring 302a-4 is fixedly connected to the lower end of the discharge piston 302a-3. A pressure spring piston 302a-5 is rotatably installed at the upper end of the adjusting screw 302a-2. The pressure spring piston 302a-5 is sleeved inside the discharge pipe 302a. The lower end of the pressure spring 302a-4 is fixedly connected to the upper end face of the pressure spring piston 302a-5. A return pipe 302b is connected to the side wall of the discharge pipe 302a.

[0032] The operation process in this embodiment is as follows: Rotating the adjusting screw 302a-2 causes the spring piston 302a-5 to squeeze the pressure spring 302a-4, thereby increasing the preload of the pressure spring 302a-4. This increases the pressure required for the abrasive flow to be extruded from the pressure square tube 2 and the side tube 3, thus adjusting the pressure of the abrasive flow in the pressure square tube 2.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A polishing apparatus for finishing metal castings, comprising an abrasive storage cylinder (1), a pressure square tube (2), and a side tube (3), characterized in that: A pressure piston (101) is vertically slidably sleeved inside the abrasive storage cylinder (1). The upper end of the pressure piston (101) is connected to the output end of the hydraulic device. The pressure square tube (2) is fixedly sleeved at the lower end outlet of the abrasive storage cylinder (1). One side of the side tube (3) is open. A groove (201) is opened through one side of the pressure square tube (2). The side of the opening of the side tube (3) is attached to the outer side wall of the pressure square tube (2) where the groove (201) is opened.

2. The polishing device for finishing metal castings according to claim 1, characterized in that: A placement sleeve (301) is provided on the side of the side tube (3) away from the pressure square tube (2), and a pressure plate (301a) is detachably fixed on the end face of the placement sleeve (301).

3. A polishing device for finishing metal castings according to claim 2, characterized in that: A ball bearing seat (301b) is fixedly installed on the side of the pressure plate (301a) near the side tube (3). A set of ball bearing seats (301b-1) is vertically arrayed and slidably sleeved on the surface of the ball bearing seat (301b). A hemispherical ball groove is opened on the end face of the ball bearing seat (301b-1) near the pressure square tube (2). A rubber ball (301b-2) is rolled in the ball bearing groove on the end face of the ball bearing seat (301b-1). A ball bearing sleeve (301b-3) is sleeved on the end face of the ball bearing seat (301b-1) near the pressure square tube (2). The rubber ball (301b-2) passes through the ball bearing sleeve (301b-3).

4. A polishing device for finishing metal castings according to claim 3, characterized in that: A guide rod (301b-4) is fixedly provided at one end of the ball bearing seat (301b-1) away from the rubber ball (301b-2). The guide rod (301b-4) passes through the pressure plate (301a). A compression spring (301b-5) is sleeved on the outside of the guide rod (301b-4). The two ends of the compression spring (301b-5) are respectively fixedly connected to the plate surface of the pressure plate (301a) and the end face of the ball bearing seat (301b-1).

5. A polishing device for finishing metal castings according to claim 4, characterized in that: Another set of ball bearing seats (301b-1) is vertically arrayed and slidably sleeved on the side wall of the pressing square tube (2) away from the object groove (201). A U-shaped plate (202) is fixedly installed on the outer side wall of the pressing square tube (2) away from the object groove (201). The guide rod (301b-4) at the rear end of the ball bearing seat (301b-1) sleeved on the side wall of the pressing square tube (2) penetrates the surface of the U-shaped plate (202). The compression spring (301b-5) sleeved on the outer side of the guide rod (301b-4) sleeved through the surface of the U-shaped plate (202) is fixedly connected at both ends to the inner side surface of the U-shaped plate (202) and the outer wall of the pressing square tube (2).

6. A polishing device for finishing metal castings according to claim 1, characterized in that: The lower ends of the pressing square tube (2) and the side tube (3) are fixedly sleeved with a bundle sleeve (302), and the lower end of the bundle sleeve (302) is fixedly provided with a discharge pipe (302a).

7. A polishing apparatus for finishing metal castings according to claim 6, characterized in that: The lower end of the discharge pipe (302a) is fixedly fitted with a pipe end cap (302a-1). An adjusting screw (302a-2) is threaded through the cover surface of the pipe end cap (302a-1). A discharge piston (302a-3) is vertically slidably fitted inside the discharge pipe (302a). A pressure spring (302a-4) is fixedly connected to the lower end of the discharge piston (302a-3). A pressure spring piston (302a-5) is rotatably installed on the upper end of the adjusting screw (302a-2). The pressure spring piston (302a-5) is fitted inside the discharge pipe (302a). The lower end of the pressure spring (302a-4) is fixedly connected to the upper end face of the pressure spring piston (302a-5). The side wall of the discharge pipe (302a) is connected to a return pipe (302b).

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