Surface polishing device for hub casting production

Abstract

The invention discloses a surface polishing device for hub casting production. Belongs to the technical field of casting production. According to the technical key points, the device comprises a machine table arranged between two sections of roller type conveyors, a rotating platform is arranged on the machine table, and a one-way material pushing assembly is arranged above the roller type conveyor located on one side of the feeding direction of the machine table; a positioning and clamping assembly matched with a hub is arranged on the side, perpendicular to the conveying direction of the roller conveyor, of the machine table, and a movable grinding wheel assembly is arranged on the side, opposite to the positioning and clamping assembly, of the machine table. A lifting positioning assembly matched with an inner hole of the hub is arranged above the rotating platform, and a rotating grinding assembly used for taking out burrs at the upper end of the hub is arranged on the lifting positioning assembly. The surface polishing device for hub casting production is compact in structure and capable of achieving automatic polishing. The device is used for cleaning surface burrs and water gaps after demolding in hub casting production.

Description

Technical Field

[0001] The invention relates to a grinding device, and more specifically, to a surface grinding device for hub casting production. Background Art

[0002] Die casting is a kind of pressure-cast parts. It uses a pressure casting machine equipped with a casting mold to pour heated liquid metals such as copper, zinc, aluminum or aluminum alloy into the inlet of the casting machine. The casting machine is used to cast parts of the shape and size limited by the mold.

[0003] After casting, casting parts need to remove the sprue and grind the burr to make the surface relatively smooth. In the current traditional process, manual stamping of sprue and grinding of burr are generally adopted. This operation mode has high workload and dangerous operation, which may easily cause hand injuries to workers. It also has high requirements on the technical proficiency and attention of personnel at work, which may easily cause the product to be scrapped due to over-grinding. Summary of the invention

[0004] The purpose of the present invention is to provide a surface grinding device for wheel hub casting production with compact structure and automatic grinding to overcome the above-mentioned deficiencies in the prior art.

[0005] The technical solution of the present invention is implemented as follows: a surface grinding device for wheel hub casting production, including a machine table arranged between two roller conveyors, a rotating platform is provided on the machine table, and a one-way pushing assembly is provided above the roller conveyor on the side of the machine table where the material is fed in; a positioning clamping assembly matching the wheel hub is provided on the machine table on the side perpendicular to the conveying direction of the roller conveyor, and a movable grinding wheel assembly is provided on the machine table on the side opposite to the positioning clamping assembly; a lifting and positioning assembly matching the inner hole of the wheel hub is provided above the rotating platform, and a rotating grinding assembly for removing the burr on the upper end of the wheel hub is provided on the lifting and positioning assembly.

[0006] In the above-mentioned surface grinding device for wheel hub casting production, the one-way pushing assembly includes a guide rail arranged above the roller conveyor, a first horizontal cylinder is provided on the guide rail, and a sliding seat matching the guide rail is connected to the piston rod of the first horizontal cylinder.

[0007] The front end of the sliding seat is hinged with a one-way push rod that rotates upward. In the initial state, the free end of the one-way push rod is vertically downward. The free end of the one-way push rod is close to the incoming material direction and is provided with an inclined push surface that cooperates with the upper end of the wheel hub. When the one-way push rod rotates to a horizontal state, the inclined push surface fits with the upper end of the wheel hub.

[0008] In the above-mentioned surface grinding device for wheel hub casting production, the positioning and clamping assembly includes a second horizontal cylinder hinged on a machine platform on one side perpendicular to the conveying direction of the roller conveyor, and an arc-shaped push plate is connected to the piston rod of the second horizontal cylinder; a sliding wheel is provided at the bottom of the arc-shaped push plate, and a guide groove matching the sliding wheel is provided on the machine platform; two guide rollers are provided at both ends of the arc-shaped push plate.

[0009] In the above-mentioned surface grinding device for wheel hub casting production, a limit assembly is provided on the machine platform at one end of the rotating platform in the discharge direction; the limit assembly includes a clearance hole arranged on the machine platform, and a first lifting cylinder is provided on the machine platform below the clearance hole, and a positioning block matching the clearance hole is provided on the piston rod of the first lifting cylinder.

[0010] In the above-mentioned surface grinding device for wheel hub casting production, the grinding wheel assembly includes a mounting seat hinged on a machine platform, a first drive motor is provided on the mounting seat, and the first drive motor is connected to a grinding wheel; a connecting rod is provided at the free end of the mounting seat, a third horizontal cylinder is hinged on the machine platform, and the piston rod of the third horizontal cylinder is hinged to the connecting rod.

[0011] In the above-mentioned surface grinding device for wheel hub casting production, a limiting wheel concentric with the grinding wheel is connected to the first driving motor below the grinding wheel through a bearing, and the outer diameter of the limiting wheel is smaller than the outer diameter of the grinding wheel.

[0012] In the above-mentioned surface grinding device for wheel hub casting production, the lifting and positioning assembly includes a gantry arranged on the machine platform, a second lifting cylinder is arranged on the gantry, and a positioning head is connected to the piston rod of the second lifting cylinder.

[0013] In the above-mentioned surface grinding device for wheel hub casting production, the positioning head includes a mounting plate, on which a guide rod is connected through a plurality of through holes; a positioning block in the shape of an inverted truncated cone is connected to the lower end of the guide rod, and a buffer spring is provided on the guide rod between the positioning block and the mounting plate.

[0014] In the above-mentioned surface grinding device for wheel hub casting production, the rotary grinding assembly includes a double-layer bracket arranged on the piston rod of the second lifting cylinder, and a rotating shaft is arranged on the double-layer bracket through a bearing; a second drive motor is arranged on the double-layer bracket, and a transmission unit is arranged between the second drive motor and the rotating shaft; the positioning head is arranged at the lower end of the rotating shaft, and a grinding unit that cooperates with the upper end surface of the wheel hub is arranged on the positioning head.

[0015] In the above-mentioned surface grinding device for wheel hub casting production, the grinding unit includes a mounting flange arranged on the positioning head, a grinding ring is detachably mounted on the bottom of the mounting flange, and a plurality of arc-shaped protrusions are arranged at the bottom of the grinding ring, and the inner side of the arc-shaped protrusions faces the rotational forward direction.

[0016] After the present invention adopts the above structure, after the wheel hub is transported to the rotating platform, the wheel hub is clamped by the grinding wheel assembly and the positioning clamping assembly to grind the water outlet. The entire grinding process is automated, which effectively reduces the workload of workers, improves safety, and improves removal efficiency. In addition, the equipment has high and controllable grinding accuracy, and is not likely to cause over-grinding and scrapping of products, thereby improving production quality.

[0017] The lifting and positioning assembly at the upper end cooperates with the inner hole of the wheel hub for positioning, while the rotating grinding assembly grinds the end and inner hole of the wheel hub to remove the burrs, which can effectively improve the efficiency of grinding the wheel hub surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the machine of the present invention;

[0021] Figure 3 It is a side structural schematic diagram of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the rotary grinding assembly of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the grinding unit of the present invention.

[0024] In the figure: 1, machine table; 2, rotating platform; 3, one-way push assembly; 3a, guide rail; 3b, first horizontal cylinder; 3c, sliding seat; 3d, one-way push rod; 3e, inclined push surface; 4, positioning clamping assembly; 4a, second horizontal cylinder; 4b, arc push plate; 4c, sliding wheel; 4d, guide groove; 4e, guide roller; 5, grinding wheel assembly; 5a, mounting seat; 5b, first driving motor; 5c, grinding wheel; 5d, connecting rod; 5e, third horizontal cylinder; 5f, limit wheel; 6 , lifting and positioning assembly; 6a, door frame; 6b, second lifting cylinder; 6c, positioning head; 6d, mounting plate; 6e, guide rod; 6f, positioning block; 6g, buffer spring; 7, rotary grinding assembly; 7a, double-layer bracket; 7b, bearing; 7c, rotating shaft; 7d, second drive motor; 7e, transmission unit; 8, limit assembly; 8a, clearance hole; 8b, first lifting cylinder; 8c, positioning block; 9, grinding unit; 9a, mounting flange; 9b, grinding ring; 9c, arc-shaped protrusion. DETAILED DESCRIPTION

[0025] See also Figure 1-5As shown, a surface grinding device for wheel hub casting production of the present invention comprises a machine platform 1 arranged between two roller conveyors, a rotating platform 2 is arranged on the machine platform 1, and a one-way material pushing assembly 3 is arranged above the roller conveyor located on the material feeding direction side of the machine platform 1; a positioning clamping assembly 4 matched with the wheel hub is arranged on the machine platform 1 on the side perpendicular to the conveying direction of the roller conveyor, and a movable grinding wheel assembly 5 is arranged on the machine platform 1 on the side opposite to the positioning clamping assembly 4; a lifting and positioning assembly 6 matched with the inner hole of the wheel hub is arranged above the rotating platform 2, and a rotating grinding assembly 7 for removing the flash on the upper end of the wheel hub is arranged on the lifting and positioning assembly 6. The rotating directions of the rotating platform and the grinding wheel assembly, and the rotating platform and the rotating grinding assembly are arranged in opposite directions.

[0026] After the hub is transported to the rotating platform, the hub is clamped by the grinding wheel assembly and the positioning clamping assembly to grind the sprue. The entire grinding process is automated, which effectively reduces the workload of workers, improves safety, and improves removal efficiency. The equipment has high and controllable grinding accuracy, and is not likely to cause over-grinding and scrapping of products, thereby improving production quality.

[0027] The lifting and positioning assembly at the upper end cooperates with the inner hole of the wheel hub for positioning, while the rotating grinding assembly grinds the end and inner hole of the wheel hub to remove the burrs, which can effectively improve the efficiency of grinding the wheel hub surface.

[0028] In this embodiment, the one-way pushing assembly 3 includes a guide rail 3a arranged above the roller conveyor, a first horizontal cylinder 3b is provided on the guide rail 3a, and a sliding seat 3c matching the guide rail 3a is connected to the piston rod of the first horizontal cylinder 3b.

[0029] The front end of the sliding seat 3c is hinged with a one-way push rod 3d that rotates upward. In the initial state, the free end of the one-way push rod 3d is vertically downward; the free end of the one-way push rod 3d is provided with an inclined push surface 3e that matches the upper end of the wheel hub on the side close to the incoming direction. When the one-way push rod 3d rotates to a horizontal state, the inclined push surface 3e fits with the upper end of the wheel hub. When the inclined push surface fits with the upper end of the wheel hub, the piston rod of the first horizontal cylinder extends to push the wheel hub to the rotating platform, and then the piston rod retracts to make the one-way push rod leave the upper end of the wheel hub and return to a vertical state. When the grinding is completed, the piston rod of the first horizontal cylinder extends again, and the one-way push rod pushes the wheel hub to the roller conveyor on the other side.

[0030] In this embodiment, preferably, the positioning clamping assembly 4 includes a second horizontal cylinder 4a hinged on the machine table 1 on one side perpendicular to the conveying direction of the roller conveyor, and an arc-shaped push plate 4b is connected to the piston rod of the second horizontal cylinder 4a; a sliding wheel 4c is provided at the bottom of the arc-shaped push plate 4b, and a guide groove 4d matching the sliding wheel 4c is provided on the machine table 1; two guide rollers 4e are provided at both ends of the arc-shaped push plate 4b. The second horizontal cylinder is hingedly installed and can swing in the horizontal direction to avoid the horizontal thrust generated when the wheel hub rotates and being transmitted to the second horizontal cylinder to cause damage.

[0031] By arranging the guide roller to cooperate with the wheel hub, the wheel hub can be positioned and at the same time, friction that causes wear on the wheel hub surface when the wheel hub rotates can be avoided.

[0032] Further preferably, a limiting assembly 8 is provided on the machine 1 at one end of the rotating platform 2 in the discharge direction; the limiting assembly 8 includes a clearance hole 8a provided on the machine 1, and a first lifting cylinder 8b is provided on the machine 1 below the clearance hole 8a, and a positioning block 8c matching the clearance hole 8a is provided on the piston rod of the first lifting cylinder 8b. By providing the limiting assembly, the positioning clamping assembly and the one-way pushing assembly to position in three directions outside the rotating platform, it is ensured that when the wheel hub is pushed onto the rotating platform, it can be accurately located in the center and aligned with the lifting and positioning assembly above.

[0033] In this embodiment, the grinding wheel assembly 5 includes a mounting seat 5a hinged on the machine 1, a first drive motor 5b is provided on the mounting seat 5a, and the first drive motor 5b is connected to a grinding wheel 5c; a connecting rod 5d is provided at the free end of the mounting seat 5a, a third horizontal cylinder 5e is hinged on the machine 1, and the piston rod of the third horizontal cylinder 5e is hinged to the connecting rod 5d. In the initial state, the grinding wheel is located outside the rotating platform. When the wheel hub is transported to the rotating platform, the piston rod of the third horizontal cylinder is retracted to position the grinding wheel and the opposite positioning clamping assembly to clamp the wheel hub and perform grinding.

[0034] In this embodiment, preferably, a limiting wheel 5f concentric with the grinding wheel 5c is connected to the first driving motor 5b below the grinding wheel 5c through a bearing, and the outer diameter of the limiting wheel 5f is smaller than the outer diameter of the grinding wheel 5c. The spacing between the outer diameter of the limiting wheel and the outer diameter of the grinding wheel is set according to the maximum grinding distance of the wheel hub. When the limiting wheel contacts the bottom of the wheel hub, the grinding wheel cannot continue to move toward the wheel hub, which can prevent the grinding wheel from grinding the side wall of the wheel hub excessively and causing damage to the wheel hub.

[0035] In this embodiment, the lifting and positioning assembly 6 includes a gantry 6a disposed on the machine platform 1, a second lifting cylinder 6b is disposed on the gantry 6a, and a positioning head 6c is connected to the piston rod of the second lifting cylinder 6b. The positioning head cooperates with the inner hole of the wheel hub to prevent the wheel hub from being displaced during the rotation grinding process, and at the same time, the flash on the inner hole can be ground.

[0036] Further preferably, the positioning head 6c includes a mounting plate 6d, on which a guide rod 6e is connected through a plurality of through holes; a positioning block 6f in the shape of an inverted truncated cone is connected to the lower end of the guide rod 6e, and a buffer spring 6g is provided on the guide rod 6e between the positioning block 6f and the mounting plate 6d. With this structure, there is a certain buffer when the positioning head cooperates with the inner hole of the wheel hub, so as to avoid the wheel hub being crushed by excessive downward pressure of the positioning head, and the elasticity of the spring can ensure that the positioning head and the inner hole of the wheel hub always remain stable.

[0037] In this embodiment, preferably, the rotary grinding assembly 7 includes a double-layer bracket 7a arranged on the piston rod of the second lifting cylinder 6b, and a rotating shaft 7c is arranged on the double-layer bracket 7a through a bearing 7b; a second drive motor 7d is arranged on the double-layer bracket 7a, and a transmission unit 7e is arranged between the second drive motor 7d and the rotating shaft 7c; the positioning head 6c is arranged at the lower end of the rotating shaft 7c, and a grinding unit 9 that cooperates with the upper end face of the wheel hub is arranged on the positioning head 6c. By arranging the second drive motor and the rotating shaft to make the positioning head and the wheel hub rotate in the opposite direction, the grinding effect of the inner hole of the wheel hub can be improved, and the upper end face of the wheel hub can be polished by the grinding unit, which can effectively clean the flash on the wheel hub.

[0038] Further preferably, the grinding unit 9 includes a mounting flange 9a disposed on the positioning head 6c, a grinding ring 9b is detachably mounted at the bottom of the mounting flange 9a, and a plurality of arc-shaped protrusions 9c are disposed at the bottom of the grinding ring 9b, the inner side of the arc-shaped protrusions 9c faces the rotational forward direction. With this structure, when the arc-shaped protrusions are grinding the upper end surface of the wheel hub, the scraped off cutting edges move outward along the inner curvature of the arc-shaped protrusions under the action of centrifugation, and the chips can be thrown out.

[0039] During operation, the wheel hub is transported to one side of the machine through the roller conveyor and the one-way push rod is lifted to a horizontal state, then the roller conveyor stops working. The first horizontal cylinder pushes the wheel hub onto the rotating platform and the front end of the wheel hub contacts the positioning block. The positioning head descends into the inner hole of the wheel hub for positioning. After positioning is completed, the piston rods of the first horizontal cylinder and the lifting cylinder retract at the same time.

[0040] Then the piston rod of the second horizontal cylinder extends, and the piston rod of the third horizontal cylinder contracts, so that the guide roller and the grinding wheel contact the outer surface of the hub, and the rotating platform, the grinding wheel and the positioning head start to rotate at the same time to grind the hub.

[0041] When the grinding is completed, the piston rods of the second horizontal cylinder and the third horizontal cylinder return to their initial positions, and the piston rod of the first horizontal cylinder extends to drive the one-way push rod to push the wheel hub to the roller conveyor on the other side for transportation.

[0042] The above embodiments are preferred implementation modes of the present invention and are only used to facilitate the description of the present invention. They are not intended to limit the present invention in any form. Any person with ordinary knowledge in the relevant technical field, if they do not depart from the scope of the technical features of the present invention, can make equivalent embodiments by partial changes or modifications to the technical contents disclosed in the present invention, and they still fall within the scope of the technical features of the present invention without departing from the technical features of the present invention.

Claims

1. A surface grinding device for wheel hub casting production, comprising a machine table (1) arranged between two roller conveyors, characterized in that: The machine (1) is provided with a rotating platform (2), and a one-way material pushing assembly (3) is provided above a roller conveyor located on the material feeding direction side of the machine (1); a positioning clamping assembly (4) matched with the wheel hub is provided on the machine (1) on the side perpendicular to the conveying direction of the roller conveyor, and a movable grinding wheel assembly (5) is provided on the machine (1) on the side opposite to the positioning clamping assembly (4); a lifting and positioning assembly (6) matched with the inner hole of the wheel hub is provided above the rotating platform (2), and a rotating grinding assembly (7) for removing the burr on the upper end of the wheel hub is provided on the lifting and positioning assembly (6).

2. A surface grinding device for wheel hub casting production according to claim 1, characterized in that: The one-way pushing assembly (3) comprises a guide rail (3a) arranged above the roller conveyor, a first horizontal cylinder (3b) is arranged on the guide rail (3a), and a sliding seat (3c) matching the guide rail (3a) is connected to the piston rod of the first horizontal cylinder (3b); The front end of the sliding seat (3c) is hinged with a one-way push rod (3d) that rotates upward. In the initial state, the free end of the one-way push rod (3d) is vertically downward. The free end of the one-way push rod (3d) is provided with an inclined push surface (3e) that matches the upper end of the wheel hub on the side close to the incoming direction. When the one-way push rod (3d) rotates to a horizontal state, the inclined push surface (3e) fits the upper end of the wheel hub.

3. A surface grinding device for wheel hub casting production according to claim 1, characterized in that: The positioning clamping assembly (4) comprises a second horizontal cylinder (4a) hinged on a machine platform (1) on a side perpendicular to the conveying direction of the roller conveyor, and an arc-shaped push plate (4b) is connected to the piston rod of the second horizontal cylinder (4a); a sliding wheel (4c) is provided at the bottom of the arc-shaped push plate (4b), and a guide groove (4d) matching the sliding wheel (4c) is provided on the machine platform (1); two guide rollers (4e) are provided at both ends of the arc-shaped push plate (4b).

4. A surface grinding device for wheel hub casting production according to claim 3, characterized in that: A limiting assembly (8) is provided on the machine platform (1) at one end of the rotating platform (2) in the material discharging direction; the limiting assembly (8) comprises a clearance hole (8a) arranged on the machine platform (1); a first lifting cylinder (8b) is provided on the machine platform (1) below the clearance hole (8a); and a positioning stopper (8c) matching the clearance hole (8a) is provided on the piston rod of the first lifting cylinder (8b).

5. The surface grinding device for wheel hub casting production according to claim 1, characterized in that: The grinding wheel assembly (5) comprises a mounting seat (5a) hinged on the machine platform (1), a first drive motor (5b) is provided on the mounting seat (5a), and the first drive motor (5b) is connected to a grinding wheel (5c); a connecting rod (5d) is provided at the free end of the mounting seat (5a), a third horizontal cylinder (5e) is hinged on the machine platform (1), and a piston rod of the third horizontal cylinder (5e) is hinged to the connecting rod (5d).

6. A surface grinding device for wheel hub casting production according to claim 5, characterized in that: A limiting wheel (5f) concentric with the grinding wheel (5c) is connected to the first driving motor (5b) below the grinding wheel (5c) via a bearing, and the limiting wheel (5f) has an outer diameter smaller than that of the grinding wheel (5c).

7. A surface grinding device for wheel hub casting production according to claim 1, characterized in that: The lifting and positioning assembly (6) comprises a door frame (6a) arranged on the machine platform (1), a second lifting cylinder (6b) is arranged on the door frame (6a), and a positioning head (6c) is connected to the piston rod of the second lifting cylinder (6b).

8. A surface grinding device for wheel hub casting production according to claim 7, characterized in that: The positioning head (6c) comprises a mounting plate (6d), on which a guide rod (6e) is connected via a plurality of through holes; a positioning block (6f) in the shape of an inverted truncated cone is connected to the lower end of the guide rod (6e), and a buffer spring (6g) is provided on the guide rod (6e) between the positioning block (6f) and the mounting plate (6d).

9. A surface grinding device for wheel hub casting production according to claim 7, characterized in that: The rotary grinding assembly (7) comprises a double-layer bracket (7a) arranged on the piston rod of the second lifting cylinder (6b), and a rotating shaft (7c) is arranged on the double-layer bracket (7a) through a bearing (7b); a second driving motor (7d) is arranged on the double-layer bracket (7a), and a transmission unit (7e) is arranged between the second driving motor (7d) and the rotating shaft (7c); the positioning head (6c) is arranged at the lower end of the rotating shaft (7c), and a grinding unit (9) that cooperates with the upper end surface of the wheel hub is provided on the positioning head (6c).

10. A surface grinding device for wheel hub casting production according to claim 9, characterized in that: The grinding unit (9) comprises a mounting flange (9a) arranged on the positioning head (6c), a grinding ring (9b) is detachably mounted on the bottom of the mounting flange (9a), and a plurality of arc-shaped protrusions (9c) are arranged on the bottom of the grinding ring (9b), wherein the inner sides of the arc-shaped protrusions (9c) face the rotational forward direction.

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