A polishing fixture for aluminum product extrusion die

Abstract

The present invention provides a polishing fixture for an aluminum extrusion die, which includes: a workbench, a lower spring, a movable push plate, a die base, a movable fixed rod, a die fixing seat, an upper die seat, an abrasive inlet, an upper sealing ring, an outlet handle, a die, a rotating bottom cover plate, a lower sealing ring, an upper spring, a rotating cone, a connecting stepped shaft, a conical washer, a spherical washer, a cone rotating disk, a driving motor, and a transmission gear. The fixture is easy to install. When working, it only needs to rotate the cone rotating disk to achieve clamping. The cone rotating disk is rotated in the opposite direction, and the device automatically returns to the initial state. The rotating bottom cover plate is provided with four blades. Under the action of the driving motor, the rotating bottom cover plate rotates, so that the abrasive particles are in more complete contact with the inner surface of the die.

Description

Technical Field

[0001] The invention relates to the technical field of abrasive flow processing, in particular to a polishing fixture for an aluminum product extrusion die. Background Art

[0002] Aluminum products are widely used. Among metal varieties, it is the second largest type of metal after steel. Pure aluminum is very soft, not very strong, and has good ductility. It can be drawn into filaments and rolled into foils. It is widely used in the manufacture of wires, cables, radio industry and packaging industry. Due to the excellent physical properties of aluminum, extrusion molding has become an important method for aluminum product processing. Under the action of thrust, the heated aluminum product is passed through the mold to form a continuous profile. Therefore, the polishing of the inner surface of the aluminum product mold is particularly important.

[0003] Abrasive flow machining is a new type of mechanical processing method, which uses abrasive media (a flowable mixture mixed with abrasive particles) to flow over the surface of the workpiece under pressure to remove burrs, flash, and round corners to reduce the waviness and roughness of the workpiece surface and achieve precision machining finish. Some complex internal surfaces or curved surfaces are difficult to polish through conventional processing, and abrasive flow machining can solve the above problems. Summary of the invention

[0004] The purpose of the invention is to solve the problem of difficulty in processing the inner surface of an aluminum product extrusion die.

[0005] The present invention provides the following technical solution: a polishing fixture for aluminum extrusion mold, characterized in that: the fixture is composed of a workbench, a lower spring, a movable push plate, a mold base, a movable fixed rod, a mold fixed base, an upper mold seat, an upper cover plate, an abrasive inlet, an upper sealing ring, an outlet handle, a mold, a rotating bottom cover plate, a lower sealing ring, an upper spring, a rotating cone, a connecting stepped shaft, a conical washer, a spherical washer, a cone rotating disk, a driving motor, and a transmission gear; the workbench is fixed on the ground; the rotating cone has one end with a conical surface facing upwards, and its lower end has a screw The cylindrical body with a thread passes through the threaded through hole of the workbench; the horizontal end of the conical washer faces upward, the conical surface faces downward, and is sleeved on the cylindrical body of the rotating cone, and the horizontal end is tightly attached to the bottom surface of the workbench; the convex surface of the spherical washer faces upward, and is complementary to the conical washer; the cone rotating disk is fixed to the lower end surface of the cylinder of the rotating cone by two slotted cylindrical head screws; the conical surface of the movable push plate matches the conical surface of the rotating cone, and the lower spring is sleeved on the cylinder of the movable push plate and fixed on one side of the larger end surface of the cylinder; the movable fixed The rod has a conical surface on one side facing downward, and its conical surface part matches the conical surface of the movable push plate; the lower end surface of the mold base is connected to the upper side of the upper spring; the middle part of the mold base has a convex end surface on one side facing upward, and the rotating bottom cover plate is fixed at a specified position of the central through hole of the mold base, cannot be moved, and can be rotatably installed; the large end surface of the connecting stepped shaft faces upward and is fixed to the lower end surface of the rotating bottom cover plate; the long axis of the connecting stepped shaft passes through the through hole of the rotating cone; the two protruding cone worktables of the mold base cooperate with each other; the movable fixed rod Through the through hole of the mold base, the movable fixing rod can move up and down, but cannot move left and right; the lower sealing ring is embedded in the annular groove on the upper end face of the mold base, the large end face of the mold fixing base faces upward, and its lower end face has two protruding cones, which cooperate with the conical groove of the mold base, and the mold is placed in the through hole of the mold fixing seat; the large end face of the upper mold seat faces downward and is fixed to the mold fixing base through hexagonal bolts; the upper sealing ring is embedded in the groove on the large end face of the upper cover plate, and the large end face of the upper cover plate faces downward and is fixed to the upper end face of the upper mold seat through hexagonal bolts. The abrasive inlet is fixed to the upper end face of the upper cover plate through hexagonal bolts, the outlet handle is fixed to the through hole of the upper mold seat, and the transmission gear is installed on the side of the long axis of the connecting step shaft through a key connection. The driving motor transmits the rotation energy to the connecting step shaft through the transmission gear, thereby driving the rotating bottom cover plate to rotate.

[0006] Further, as a preference, when the lower end surface of the cone head portion of the rotating cone contacts the upper surface of the workbench, the spring is at its original length, and when the rotating cone rotates the rotating disk, the rotating cone moves upward, pushing the movable push plate to move to both sides, and the spring is clamped; when the cone rotating disk rotates in the opposite direction, the rotating cone moves downward, and the compressed lower spring pushes the movable push plate to move inward.

[0007] Further, as a preference, the movable push plate pushes the movable fixed rod to move upward, the upper spring is in a compressed state, and when the cone rotating disk rotates in the opposite direction, the rotating cone moves downward, and the movable fixed rod moves downward under the action of the compressed upper spring.

[0008] Furthermore, as a preference, the rotating bottom cover plate has four blades on its upper end. When the driving motor is working, the two transmission gears drive the connecting step shaft to rotate, the connecting step shaft drives the rotating bottom cover plate to rotate, and the impeller on the upper end of the rotating bottom cover plate rotates, so that the abrasive flow contacts the inner surface of the mold more fully.

[0009] Furthermore, preferably, the upper end of the movable fixing rod is elastic, and when the movable fixing rod moves upward, the convex surface of the mold fixing base will squeeze the upper end of the movable fixing rod, forcing the movable fixing rod to squeeze the mold inward, thereby achieving a clamping effect.

[0010] Further, as a preference, the outlet handle controls the release of the abrasive flow; the abrasive flow enters from the inlet, and after polishing is completed, the outlet handle is opened, and the abrasive flow flows out from the through hole of the upper mold seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of an assembly diagram of the present invention.

[0012] Figure 1 Middle: 1. Workbench, 2. Lower spring, 3. Moving push plate, 4. Mold base, 5. Moving fixed rod, 6. Mold fixing seat, 7. Upper mold seat, 8. Upper cover plate, 9. Abrasive inlet, 10. Upper sealing ring, 11. Outlet handle, 12. Mold, 13. Rotating bottom cover plate, 14. Lower sealing ring, 15. Upper spring, 16. Rotating cone, 17. Connecting stepped shaft, 18. Conical washer, 19. Spherical washer, 20. Conical rotating disk, 21. Driving motor, 22. Transmission gear. DETAILED DESCRIPTION

[0013] The workbench (1) is fixed on the ground. The rotating cone (16) has a cylindrical body with a conical surface facing upward and a threaded bottom end, which passes through a threaded through hole of the workbench (1). The conical washer (18) has a horizontal end facing upward and a conical surface facing downward, and is sleeved on the cylindrical body of the rotating cone (16), and the horizontal end is tightly attached to the bottom surface of the workbench (1). The convex surface of the spherical washer (19) faces upward and complements the conical washer (18). The cone rotating disk (20) is fixed to the lower end surface of the cylindrical body of the rotating cone (16) by two slotted cylindrical head screws. The conical surface of the movable push plate (3) matches the conical surface of the rotating cone (16); the lower spring (2) is sleeved on the cylinder of the movable push plate (3) and fixed on one side of the large end face of the cylinder; the movable fixed rod (5) has a conical surface on one side facing downward, and the conical surface portion matches the conical surface of the movable push plate (3). The mold base (4) is connected to the upper side of the upper spring (15). The mold base (4) has a raised end surface on one side facing upward in the middle part, and the rotating bottom cover plate (13) is fixed at a specified position of the central through hole of the mold base (4), and is immovable and rotatable. The connecting stepped shaft (17) has a large end surface facing upward and is fixed to the lower end face of the rotating bottom cover plate (3). The long axis of the connecting stepped shaft (17) passes through the through hole of the rotating cone (16); the two protruding cones of the mold base (4) cooperate with the conical groove of the workbench (1); the movable fixing rod (5) passes through the through hole of the mold base (4), and the movable fixing rod (5) can move up and down but cannot move left and right; the lower sealing ring (14) is embedded in the annular groove of the upper end surface of the mold base (4), the large end surface of the mold fixing seat (6) faces upward, and its lower end surface has two protruding cones that cooperate with the conical groove of the mold base (4), and the mold (12) is placed in the through hole of the mold fixing seat (6). The large end surface of the upper mold seat (7) faces downward and is fixed to the mold fixing base (4) by hexagonal bolts; the upper sealing ring (10) is embedded in the groove of the large end surface of the upper cover plate (8), and the large end surface of the upper cover plate (8) faces downward and is fixed to the upper end surface of the upper mold seat (7) by hexagonal bolts. The abrasive inlet (9) is fixed to the upper end surface of the upper cover plate (8) by means of hexagonal bolts, the outlet handle (11) passes through the through hole of the upper mold base (7), the transmission gear (22) is connected by a key and is installed on one side of the long axis of the connecting stepped shaft (17), and the driving motor (21) transmits the rotational energy to the connecting stepped shaft (17) through the transmission gear, thereby driving the rotating bottom cover plate (13) to rotate.

[0014] When working, it is only necessary to rotate the cone rotating disk (20), and the rotating cone (16) moves upward, pushing the movable push plate (3) to move to both sides. The lower spring (2) is compressed. The movable push plate (3) pushes the movable fixed rod (5) to move upward, and the upper spring (15) is in a compressed state. The upper end of the movable fixed rod (5) is elastic. When the movable fixed rod (5) moves upward, the convex surface of the mold fixing base (6) will squeeze the upper end of the movable fixed rod (5), forcing the movable fixed rod (5) to squeeze the mold (12) inward, playing a clamping role. The cone rotating disk (20) is rotated in the opposite direction, and the compressed upper spring (15) pushes the movable fixed rod (5) to move downward, and the compressed lower spring (2) pushes the movable push plate (3) to move inward, and the device automatically returns to the initial state. The rotating bottom cover plate (13) is provided with four blades. When the driving motor (21) is working, the two transmission gears (22) drive the connecting step shaft (17) to rotate, and the connecting step shaft (17) drives the rotating bottom cover plate (13) to rotate, and the impeller at the upper end of the rotating bottom cover plate (13) rotates, so that the abrasive flow contacts the inner surface of the mold more fully.

[0015] 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 polishing fixture for an aluminum extrusion die, characterized in that: The polishing fixture is composed of a workbench, a lower spring, a movable push plate, a mold base, a movable fixed rod, a mold fixed base, an upper mold seat, an upper cover plate, an abrasive inlet, an upper sealing ring, an outlet handle, a mold, a rotating bottom cover plate, a lower sealing ring, an upper spring, a rotating cone, a connecting stepped shaft, a conical washer, a spherical washer, a cone rotating disk, a driving motor, and a transmission gear; the workbench is fixed on the ground; the rotating cone is a cylindrical body with one end of the cone facing upward and a threaded cylinder at the lower end passing through the threaded through hole of the workbench; the horizontal end of the conical washer faces upward and the conical surface faces downward, and is sleeved on the cylinder of the rotating cone, The horizontal end is tightly attached to the bottom surface of the workbench; the convex surface of the spherical washer faces upward and complements the conical washer; the cone rotating disk is fixed to the lower end surface of the cylinder of the rotating cone by two slotted cylindrical head screws; the conical surface of the movable push plate matches the conical surface of the rotating cone, and the lower spring is sleeved on the cylinder of the movable push plate and fixed on one side of the larger end surface of the cylinder; the side with the conical surface of the movable fixed rod faces downward, and its conical surface part matches the conical surface of the movable push plate; the lower end surface of the mold base is connected to the upper side of the upper spring; the middle part of the mold base has a raised end surface on one side facing upward, The rotating bottom cover is fixed at a designated position of the central through hole of the mold base, cannot be moved, and can be rotatably installed; the large end face of the connecting step shaft faces upward and is fixed to the lower end face of the rotating bottom cover; the long axis of the connecting step shaft passes through the through hole of the rotating cone; the two protruding cones of the mold base cooperate with the conical groove of the workbench; the movable fixing rod passes through the through hole of the mold base, and the movable fixing rod can move up and down but cannot move left and right; the lower sealing ring is embedded in the annular groove on the upper end face of the mold base, the large end face of the mold fixed base faces upward, and its lower end face has two protruding cones, which cooperate with the conical groove of the mold base. The mold is placed in the through hole of the mold fixing base; the large end face of the upper mold base is downward and fixed to the mold fixing base by a hexagonal bolt; the upper sealing ring is embedded in the groove of the large end face of the upper cover plate, the large end face of the upper cover plate is downward and fixed to the upper end face of the upper mold base by a hexagonal bolt, the abrasive inlet is fixed to the upper end face of the upper cover plate by a hexagonal bolt, the outlet handle is fixed to the through hole of the upper mold base, the transmission gear is installed on one side of the long shaft of the connecting step shaft through a key connection, and the driving motor transmits the rotational energy to the connecting step shaft through the transmission gear, thereby driving the rotating bottom cover plate to rotate.

2. The polishing fixture for aluminum extrusion die according to claim 1, characterized in that: When the lower end surface of the cone head part of the rotating cone contacts the upper surface of the workbench, the upper spring is at its original length. When the rotating cone rotates the rotating disk, the rotating cone moves upward, pushing the movable push plate to move to both sides, and the upper spring is clamped; when the cone rotating disk rotates in the opposite direction, the rotating cone moves downward, and the compressed lower spring pushes the movable push plate to move inward.

3. The polishing fixture for an aluminum extrusion die according to claim 1, characterized in that: The moving push plate pushes the moving fixed rod to move upward, and the upper spring is in a compressed state. When the cone rotating disk rotates in the opposite direction, the rotating cone moves downward, and the moving fixed rod moves downward under the action of the compressed upper spring.

4. The polishing fixture for aluminum extrusion die according to claim 1, characterized in that: The rotating bottom cover plate has four blades on its upper end. When the driving motor is working, two transmission gears drive the connecting step shaft to rotate, and the connecting step shaft drives the rotating bottom cover plate to rotate, and the impeller on the upper end of the rotating bottom cover plate rotates, so that the abrasive flow contacts the inner surface of the mold more fully.

5. The polishing fixture for aluminum product extrusion die according to claim 1, characterized in that: The upper end of the movable fixing rod is elastic. When the movable fixing rod moves upward, the convex surface of the mold fixing base will squeeze the upper end of the movable fixing rod, forcing the movable fixing rod to squeeze the mold inward to achieve a clamping effect.

6. The polishing fixture for aluminum product extrusion die according to claim 1, characterized in that: The outlet handle controls the release of the abrasive flow; the abrasive flow enters from the inlet, and after polishing is completed, the outlet handle is opened, and the abrasive flow flows out from the through hole of the upper mold seat.

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