Rotary grinding head for plane mirror polishing of flat die head of extrusion die

Abstract

The utility model discloses an extrusion die flat die head plane mirror surface polishing rotary grinding head which comprises a fixing plate and a machine tool spindle, a polishing fixing rod is fixedly installed in the bottom end of the machine tool spindle, the fixing plate is arranged at the bottom end of the polishing fixing rod, polishing materials are fixed at the bottom end of the fixing plate, and the polishing materials are fixed at the bottom end of the machine tool spindle. And an empty groove is formed in the middle position of the bottom end of the polishing material. The rotary grinding head assembly of the plane mirror polishing rotary grinding head for the flat die head of the extrusion die is composed of the reasonable fixing plate and the polishing material in a special shape, the polishing process is changed from manual work to mechanical drive of the rotary die head for semi-finish and finish polishing, on the one hand, manual work is replaced by mechanization, the automation degree can be improved, the second form and location tolerance precision is high, the plane is 0.01, the roughness is 0.02 microns, and the polishing effect is good. The die flat die head polishing device is simple in structure and good in consistency, after the die flat die head is polished, the quality of the die flat die head during die assembly can be improved, and the problem that the mirror polishing effect on the flat die head plane of a long-strip-shaped extrusion die is poor manually is solved.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, specifically to a planar mirror polishing rotary grinding head for extrusion mold flat die head. Background Technology

[0002] In the mold manufacturing process, in order to improve the quality of the mold, surface grinding and polishing equipment is used to smooth and mirror the surface of the mold workpiece after the shape is processed.

[0003] Currently, the mirror polishing of the flat die head of long strip extrusion molds is mainly done manually. First, sandpaper, oilstone and oil are used for initial polishing, and then oilstone polishing paste is used for semi-finish polishing and fine polishing. The surface shape and position tolerance of the polished surface is poor. Generally, the flatness is about 0.01 and the roughness is 0.06um. The quality of the assembled product after mold closing is poor and there are shortcomings.

[0004] Now, a novel extrusion die flat head planar mirror polishing rotary grinding head is proposed to solve the above-mentioned shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a rotary grinding head for polishing the flat surface of an extrusion die head to solve the problem mentioned in the background art of poor polishing effect of manual polishing of the flat surface of a long strip extrusion die head.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a planar mirror polishing rotary grinding head for extrusion die flat head, comprising a fixed plate and a machine tool spindle, wherein a polishing fixing rod is installed and fixed inside the bottom end of the machine tool spindle, and a fixed plate is provided at the bottom end of the polishing fixing rod, wherein polishing material is fixed at the bottom end of the fixed plate, and a hollow groove is formed at the middle position of the bottom end of the polishing material, and a slot is formed inside the polishing material.

[0007] Preferably, the cavity is hollowed out at the middle position of the bottom end of the polishing material.

[0008] Preferably, the groove is a horizontal and vertical groove that penetrates the interior of the polishing material horizontally and vertically.

[0009] Preferably, a connecting plate is welded and fixed to the bottom of the outer side of the polishing fixing rod, and a connecting bolt is provided at the top of the connecting plate. A reserved hole is opened inside the connecting plate, a first washer is provided outside the connecting bolt, and a first screw hole is opened inside the top of the fixing plate.

[0010] Preferably, four sets of reserved holes are arranged in a ring at equal intervals inside the connecting plate, and the reserved holes penetrate the interior of the connecting plate.

[0011] Preferably, four sets of connecting bolts and first screw holes are provided in an annular pattern at equal intervals inside the top of the connecting plate and the top of the fixing plate, respectively, and the connecting bolts penetrate the interior of the reserved holes.

[0012] Preferably, the fixing plate is fitted with an outer ring, and a wire brush is fixed on each side of the bottom end of the outer ring. Mounting bolts are respectively installed through the interior of the two sides of the fixing plate, and a second washer is fitted on the exterior of the mounting bolts. A second screw hole is respectively opened in the interior of the two sides of the fixing plate.

[0013] Preferably, multiple sets of the filament brushes are arranged at equal intervals on both sides of the bottom end of the outer ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the flat die head of the extrusion mold and the planar mirror polishing rotary grinding head not only improve the polishing accuracy and automation, but also facilitate the disassembly and assembly of the grinding head assembly, and facilitate the auxiliary cleaning of debris at the mold polishing position;

[0015] (1) By setting up a machine tool spindle, polishing fixing rod, fixing plate, polishing material, slots and empty slots, the rotary grinding head assembly is composed of a reasonable fixing plate and a polishing material with a special shape. The polishing process is changed from manual to mechanically driven rotary die head semi-finishing and fine polishing. On the one hand, mechanization can improve the degree of automation by replacing manual labor. On the other hand, the form and position tolerance accuracy is high, with a plane of 0.01 and a roughness of 0.02um, and good consistency. After polishing the mold flat die head, the quality of the mold flat die head during mold closing assembly can be improved. By setting up slots and empty slots, firstly, it ensures that there is a plane contact between the bottom surface of the polishing material and the workpiece being polished, so that the bottom contact surface is less than 2 / 3 to avoid resonance of the machine tool spindle. Secondly, the polishing fluid can pass through the slots to remove the polishing abrasive. Wear particles are promptly removed, increasing the precision of the polished surface. The polishing material is fixed on the fixed plate, and the fixed rod is polished on the rotating grinding head. After the fixed plate and polishing material are assembled and fixed together, dynamic balancing is performed to ensure the accuracy of the rotating grinding head assembly when it is mounted on the machine tool spindle and rotates with the machine tool spindle. Its outer circle and bottom surface runout are within 0.005. The machine tool spindle on the CNC polishing machine drives the polishing rotating grinding head to rotate. At the same time, the equipment automatically moves up and down to the designated position and moves left and right on the workpiece surface to polish the workpiece surface. This type of polishing rotating die head produces a high degree of surface roughness, high automation, fewer defective products, high efficiency, and extremely high form and position tolerance accuracy, which cannot be achieved manually, thus improving the product yield.

[0016] (2) By setting a polishing fixing rod, fixing plate, connecting plate, connecting bolt, first washer, reserved hole and first screw hole, when the rotating grinding head is used, after the polishing material at the bottom of the fixing plate is worn out, the connecting bolts set on both sides and both ends of the top of the connecting plate can be screwed out from the inside of the first screw hole, and the polishing material and fixing plate can be removed from the polishing fixing rod. New polishing material and fixing plate can be replaced and reinstalled for use, which is convenient for disassembling and replacing the grinding head assembly.

[0017] (3) By setting a fixed plate, polishing material, outer ring, mounting bolts, second washer, wire brush and second screw hole, when the rotary grinding head is installed and used, the outer ring with wire brush can be fixed on the outside of the fixed plate with mounting bolts. When the machine tool spindle rotates and drives the rotary grinding head to grind and polish the workpiece surface, multiple sets of wire brushes can be driven to rotate at the same time. During the polishing process of the fixed plate and polishing material moving, the wire brush can assist in sweeping away the debris during the polishing process, which is convenient for assisting in cleaning the debris at the mold polishing position. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the polishing material of this utility model;

[0020] Figure 3 This is a bottom view schematic diagram of the polishing material of this utility model;

[0021] Figure 4 This is a top-view enlarged structural diagram of the fixing plate of this utility model.

[0022] In the diagram: 1. Polishing material; 2. Fixing plate; 3. Connecting plate; 4. Polishing fixing rod; 5. Machine tool spindle; 6. Connecting bolt; 7. First washer; 8. Outer ring; 9. Mounting bolt; 10. Second washer; 11. Wire brush; 12. Groove; 13. Empty groove; 14. Reserved hole; 15. Second screw hole; 16. First screw hole. Detailed Implementation

[0023] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1: Please refer to Figure 1-4A rotary grinding head for polishing the surface of an extrusion die flat die head includes a fixed plate 2 and a machine tool spindle 5. A polishing fixing rod 4 is installed and fixed inside the bottom end of the machine tool spindle 5, and a fixed plate 2 is provided at the bottom end of the polishing fixing rod 4. A polishing material 1 is fixed at the bottom end of the fixed plate 2. A hollow groove 13 is opened at the middle position of the bottom end of the polishing material 1, and a groove 12 is opened inside the polishing material 1.

[0025] The cavity 13 hollows out the interior of the middle position at the bottom of the polishing material 1, and the groove 12 is a horizontal and vertical groove that penetrates the interior of the polishing material 1 horizontally and vertically.

[0026] Specifically, such as Figures 1-3 As shown, the rotary grinding head assembly consists of a reasonable fixed plate 2 and a specially shaped polishing material 1. The polishing process is changed to semi-finishing and fine polishing of the rotary mold head. On the one hand, mechanization can replace manual labor and improve the degree of automation. On the other hand, the dimensional and positional tolerance accuracy is high, with a flatness of 0.01 and a roughness of 0.02um, and good consistency. After polishing the mold flat mold head, the quality of the mold flat mold head during mold closing assembly can be improved.

[0027] Example 2: A connecting plate 3 is welded and fixed to the bottom of the polishing fixing rod 4, and a connecting bolt 6 is provided at the top of the connecting plate 3. A reserved hole 14 is opened inside the connecting plate 3. A first washer 7 is provided outside the connecting bolt 6. A first screw hole 16 is opened inside the top of the fixing plate 2. Four sets of reserved holes 14 are arranged in a ring at equal intervals inside the connecting plate 3. The reserved holes 14 penetrate the interior of the connecting plate 3. The connecting bolt 6 and the first screw hole 16 are arranged in a ring at equal intervals inside the top of the connecting plate 3 and the top of the fixing plate 2, respectively. The connecting bolt 6 penetrates the interior of the reserved hole 14.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, after the polishing material 1 at the bottom of the fixed plate 2 is worn out, the connecting bolts 6 can be screwed out from the inside of the first screw hole 16 on both sides and both ends of the top of the connecting plate 3. Then the polishing material 1 and the fixed plate 2 can be removed from the polishing fixing rod 4, and new polishing material 1 and fixed plate 2 can be replaced and reinstalled.

[0029] Example 3: An outer ring 8 is sleeved on the outside of the fixing plate 2, and a wire brush 11 is fixed on both sides of the bottom end of the outer ring 8. Mounting bolts 9 are respectively installed through the inside of both sides of the fixing plate 2, and a second washer 10 is sleeved on the outside of the mounting bolts 9. A second screw hole 15 is respectively opened in the inside of both sides of the fixing plate 2. Multiple sets of wire brushes 11 are equally spaced on both sides of the bottom end of the outer ring 8.

[0030] Specifically, such as Figure 1 and Figure 4As shown, an outer ring 8 with wire brush 11 can be fixedly installed on the outside of the fixed plate 2 using mounting bolts 9. When the machine tool spindle 5 rotates and drives the rotary grinding head to grind and polish the workpiece surface, multiple sets of wire brushes 11 can be driven to rotate at the same time. During the polishing process of the fixed plate 2 and the polishing material 1, the wire brushes 11 can assist in removing the debris during the polishing process.

[0031] Working Principle: The rotary grinding head assembly of this utility model consists of a reasonably fixed plate 2 and a specially shaped polishing material 1. The polishing process is changed to semi-finishing and fine polishing of the rotary mold head. On the one hand, mechanization replaces manual labor, which can improve the degree of automation. On the other hand, the dimensional and positional tolerance accuracy is high, with a flatness of 0.01 μm and a roughness of 0.02 μm, resulting in good consistency. After polishing the mold flat mold head, the quality of the mold flat mold head during assembly can be improved. At the same time, when the rotary grinding head is in use, after the polishing material 1 at the bottom of the fixed plate 2 is worn out, the connecting bolts 6 set on both sides and both ends of the top of the connecting plate 3 can be turned upwards from the first screw. After unscrewing the inside of hole 16, the polishing material 1 and the fixing plate 2 can be removed from the polishing fixing rod 4, and new polishing material 1 and fixing plate 2 can be replaced and reinstalled. When the rotary grinding head is installed and used, the outer ring 8 with the wire brush 11 can be fixed to the outside of the fixing plate 2 with the mounting bolt 9. When the machine tool spindle 5 rotates and drives the rotary grinding head to polish the surface of the workpiece, multiple sets of wire brushes 11 can be driven to rotate at the same time. During the polishing process of the fixing plate 2 and the polishing material 1, the wire brushes 11 can help sweep away and clean the debris during the polishing process.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A planar mirror polishing rotary grinding head for extrusion die flat head, comprising a fixed plate (2) and a machine tool spindle (5), characterized in that: A polishing fixing rod (4) is installed and fixed inside the bottom end of the machine tool spindle (5), and a fixing plate (2) is provided at the bottom end of the polishing fixing rod (4). A polishing material (1) is fixed at the bottom end of the fixing plate (2). A slot (13) is opened at the middle position of the bottom end of the polishing material (1), and a slot (12) is opened inside the polishing material (1).

2. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 1, characterized in that: The groove (13) hollows out the interior of the bottom middle position of the polishing material (1).

3. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 1, characterized in that: The groove (12) is a horizontal and vertical groove that penetrates the interior of the polishing material (1) horizontally and vertically.

4. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 1, characterized in that: A connecting plate (3) is welded to the bottom of the polishing fixing rod (4), and a connecting bolt (6) is provided at the top of the connecting plate (3). A reserved hole (14) is provided inside the connecting plate (3), and a first washer (7) is provided outside the connecting bolt (6). A first screw hole (16) is provided inside the top of the fixing plate (2).

5. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 4, characterized in that: The reserved holes (14) are arranged in four sets at equal intervals in a ring inside the connecting plate (3), and the reserved holes (14) penetrate the interior of the connecting plate (3).

6. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 4, characterized in that: The connecting bolts (6) and the first screw holes (16) are respectively arranged in four sets at equal intervals in a ring at the top of the connecting plate (3) and the top of the fixing plate (2). The connecting bolts (6) penetrate the interior of the reserved hole (14).

7. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 1, characterized in that: The fixing plate (2) is fitted with an outer ring (8), and a wire brush (11) is fixed on both sides of the bottom end of the outer ring (8). Mounting bolts (9) are respectively installed through the interior of both sides of the fixing plate (2), and a second washer (10) is fitted on the outside of the mounting bolts (9). A second screw hole (15) is respectively opened in the interior of both sides of the fixing plate (2).

8. The rotary grinding head for polishing a flat surface of an extrusion die according to claim 7, characterized in that: The filament brushes (11) are arranged in multiple sets at equal intervals on both sides of the bottom end of the outer ring (8).

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