A special fixture for clamping a cutter on a milling machine for milling square blanks

Abstract

The utility model relates to a milling machine special machine clamping cutter of milling square blank, including cylindrical tool bar, the pole front end is provided with the tool body, is provided with the cylindrical accommodating cavity in the tool body center axis direction, is provided with the evenly distributed tool bit and the chip flute of the circumferential direction on the tool body of the cylindrical accommodating cavity periphery, the tool bit and the chip flute interval arrangement, one side of tool bit is the cutting face, the cutting face all installs the blade, the upper surface of the blade is basically flush with the tool bit, the side of the blade to the cylindrical accommodating cavity is provided with the cutting edge. The milling machine special machine clamping cutter of milling square blank of the utility model structure design scientific and reasonable, realizes square blank piece end part cylinder piece's high -efficient, high quality processing, provides a machining cutter and processing equipment innovative train of thought and method.

Description

Technical Field

[0001] This utility model belongs to the field of milling machine tool technology, and specifically relates to a special clamping tool for milling square blanks. Background Technology

[0002] Most existing shaft parts are machined using lathes, where the cutting tool is fixed and the workpiece rotates. Milling machines are mostly used for machining flat surfaces or holes and grooves in special workpieces, where the workpiece is fixed and the cutting tool rotates. Currently, when machining special parts that combine cylindrical and non-cylindrical components, the raw material structure of the square blank is as follows: Figure 1 As shown, the clamping part is not cylindrical, and a cylindrical shape needs to be machined at the other end. There are usually two machining methods: one is to turn it on a lathe using a four-jaw chuck or a special fixture, which can achieve an accuracy of 1.6 or even higher. However, the clamping is complicated and requires the special manufacture of fixtures or four-jaw chucks for clamping. The preparation time for the initial process is long, which is not conducive to improving production efficiency. The other is to mill it on a milling machine. The clamping process is simple, but there are no special tools, and the milling efficiency of using traditional milling cutters is not high, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a special clamped tool for milling square blanks. It can realize a simple clamping process for milling machines. By rotating the spindle and feeding the Z-axis, this tool can directly turn the outer surface of the cylinder, making full use of the clamping process of the milling machine and the milling quality and efficiency of turning, and greatly improving the production efficiency of cylindrical parts at the end of square blanks.

[0004] The technical problem solved by this utility model is achieved through the following technical solution:

[0005] A special clamped tool for milling square blanks includes a cylindrical tool holder, characterized in that: a tool body is formed at the front end of the tool holder, and a cylindrical receiving cavity is formed axially at the center of the tool body. The tool body has circumferentially distributed tool tips and chip removal grooves on the outer periphery of the cylindrical receiving cavity. The tool tips and chip removal grooves are arranged at intervals. One side of the tool tip is a cutting surface, and an insert is installed on the upper end of the cutting surface. The upper surface of the insert is basically flush with the tool tip, and the side of the insert facing the cylindrical receiving cavity has a cutting edge.

[0006] Furthermore, the cutter head and chip removal groove are arranged in 3-4 sets at intervals.

[0007] Furthermore, the cutting surface of the cutter head has a blade mounting position, and a screw fixing hole is formed in the blade mounting position. The blade is positioned and installed in the blade mounting position by fixing screws. The outer surface of the blade is flush with the outer surface of the cutting surface of the cutter head, and the radial position of the cutting edge of the blade is consistent with the diameter of the cylindrical part to be processed.

[0008] Moreover, the blade is a triangular blade, with two to three corners forming the cutting edge.

[0009] Moreover, the blade is a square blade, with 2-4 corners serving as cutting edges.

[0010] Moreover, the depth of the cylindrical receiving cavity is consistent with the height of the cylindrical workpiece to be processed.

[0011] Furthermore, the other side of the cutter head is the cutting back side, and the bottom of the chip removal groove and the bottom of the cutting back side are provided with an arc-shaped guide groove.

[0012] Moreover, the cutting surface of the cutter head is perpendicular to the axis, the cutting back surface is inclined at a 30-60 degree angle to the axis, and the cutting back surface is tangent to the outer edge of the cylindrical receiving cavity in cross-section, which facilitates chip removal.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] 1. The present invention relates to a special clamped tool for milling square blanks. The tool holder can be installed on the milling machine tool holder. The square blank is clamped in the workpiece holder of the milling machine. By rotating the tool spindle and feeding the Z-axis, the upper part of the square blank is directly machined into a cylindrical part. This invention makes full use of the clamping process of the milling machine and the milling quality and efficiency of turning, and greatly improves the production efficiency of the cylindrical part at the end of the square blank.

[0015] 2. The milling machine-clamped tool of this utility model for milling square blanks has 3-4 sets of cutter heads and chip removal grooves arranged at intervals, which can be set according to actual processing needs. The structure is simple and easy to manufacture.

[0016] 3. The milling machine clamping tool of this utility model for milling square blanks has a cutting tool mounting position on the cutting surface of the tool head. The cutting tool is positioned and installed on the cutting tool mounting position by fixing screws. The outer surface of the cutting tool is flush with the outer surface of the cutting surface of the tool head. The radial position of the cutting edge of the cutting tool is consistent with the diameter of the cylindrical part to be machined, which facilitates the replacement of the cutting tool. The cutting edge of the cutting tool realizes the rotary milling of the outer edge of the cylindrical part during the milling process.

[0017] 4. The milling machine clamping tool of this utility model for milling square blanks has a triangular insert with 2-3 corners as cutting edges. The insert can also be a square insert with 2-4 corners as cutting edges, thus maximizing the utilization rate of the insert.

[0018] 5. The milling machine clamping tool of this utility model for milling square blanks has a cutting back side on the other side of the tool head. The bottom end of the chip removal groove and the bottom of the cutting back side are provided with an arc-shaped guide groove to facilitate chip removal. The cutting surface of the tool head is perpendicular to the axis, and the cutting back side is inclined at a 30-60 degree angle to the axis. The cutting back side is tangent to the outer edge of the cylindrical receiving cavity in cross-section, which further improves the chip removal effect, effectively reduces the temperature, and improves the tool service life.

[0019] 6. The structure design of the special clamping tool for milling square blanks of this utility model is scientific and reasonable, realizing efficient and high-quality machining of the cylindrical part at the end of the square blank, and providing an innovative idea and method for machining tools and machining equipment. Attached Figure Description

[0020] Figure 1 This is the outline drawing of the square blank to be processed according to this utility model;

[0021] Figure 2 This is a drawing of the finished cylindrical part of this utility model.

[0022] Figure 3 This is a schematic diagram of the structure of the milling machine-specific clamped tool of Example 1;

[0023] Figure 4 This is a schematic diagram of the structure of the milling machine-specific clamped tool of Example 1 (with one insert removed).

[0024] Figure 5 This is a top view of the structure of the milling machine-specific clamped tool in Example 1;

[0025] Figure 6 This is a schematic diagram of the structure of the milling machine-specific clamped tool in Example 2.

[0026] Attached image annotations:

[0027] 1-Square blank, 2-Cylindrical part, 3-Insert tool, 4-Cylindrical receiving cavity, 5-Tool head, 6-Chip removal groove, 7-Tool holder, 8-Screw fixing hole, 9-Insert tool mounting position, 10-Cutting surface, 11-Cutting edge, 12-Cutting back side, 13-Arc-shaped guide groove, 14-Square insert. Detailed Implementation

[0028] Example 1

[0029] A special clampable milling tool for milling square blanks, used to mill a square blank 1 into an irregularly shaped workpiece 2 with a square lower part and a cylindrical upper part, such as... Figure 1 , Figure 2 As shown, the special clamped tool for this milling machine includes a cylindrical tool holder 7, a tool body at the front end of the tool holder, and a cylindrical receiving cavity 4 axially formed at the center of the tool body. The depth of the cylindrical receiving cavity is consistent with the height of the cylindrical workpiece to be machined.

[0030] The cylindrical receiving cavity has circumferentially distributed cutting heads 5 and chip removal grooves 6 on its outer periphery, with the cutting heads and chip removal grooves spaced apart. There are 3-4 sets of cutting heads and chip removal grooves arranged at intervals. In this embodiment, there are 3 sets of cutting heads and chip removal grooves arranged at intervals. One side of the cutting head is a cutting surface 10, on which a cutting insert 3 is mounted. The upper surface of the cutting insert is basically flush with the cutting head, and a cutting edge 11 is formed on the side of the cutting insert facing the cylindrical receiving cavity. A cutting insert mounting position 9 is formed on the cutting surface of the cutting head, and a screw fixing hole 8 is formed in the mounting position. The cutting insert is positioned and mounted on the mounting position 9 by fixing screws. The outer surface of the cutting insert is flush with the outer surface of the cutting surface of the cutting head, and the radial position of the cutting edge of the cutting insert is consistent with the diameter of the cylindrical workpiece to be machined. In this embodiment, the cutting insert is a triangular cutting insert, with 2-3 corners of the triangular cutting insert serving as cutting edges. This facilitates cutting insert replacement, and the cutting edge of the cutting insert enables rotary milling of the outer edge of the cylindrical workpiece during milling.

[0031] The other side of the cutter head is the cutting back surface 12. An arc-shaped guide groove 13 is formed at the bottom of the chip removal groove and the bottom of the cutting back surface to facilitate the removal of metal chips after milling. The cutting surface of the cutter head is perpendicular to the axis, and the cutting back surface is inclined at a 30-60 degree angle to the axis. The cutting back surface is tangent to the outer edge of the cylindrical receiving cavity in cross-section, which further improves the chip removal effect, effectively reduces temperature, and increases the tool life.

[0032] Example 2

[0033] In this embodiment, a special clamped milling tool for milling square blanks uses a square insert 14, with 2-4 corners serving as cutting edges. Mounting positions for the square insert are formed on the cutting surface of the cutter head, and screw holes are formed at these mounting positions. The square insert is then fixed to the cutting surface of the cutter head using screws. Everything else is the same as in Embodiment 1.

[0034] Its tool holder can be installed on the milling machine tool holder, and the square blank is clamped in the workpiece holder of the milling machine. By rotating the tool spindle and feeding the Z-axis, the upper part of the square blank is directly machined into a cylindrical part. This makes full use of the clamping process of the milling machine and the milling quality and efficiency of turning, and greatly improves the production efficiency of the cylindrical part at the end of the square blank.

[0035] In this embodiment, the tool holder is 120mm long and 34mm in diameter; the internal machining diameter is 12mm, the cylindrical receiving cavity diameter is 16mm, and the interior is a through hole. The dimensions of this utility model can be adjusted according to the actual size of the workpiece to machine a cylindrical shape from a square blank. The machining accuracy can reach above 0.02. This utility model's milling machine-specific indexable tool for milling square blanks greatly simplifies the machining process for mass production, offering a simple and universal method, a simple feed method, and high machining efficiency.

[0036] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A special clamped tool for milling square blanks, comprising a cylindrical tool holder (7), characterized in that: The tool holder (7) has a tool body at its front end and a cylindrical receiving cavity (4) is formed in the central axis of the tool body. The tool body has circumferentially distributed tool heads (5) and chip removal grooves (6) on the outer periphery of the cylindrical receiving cavity (4). The tool heads (5) and chip removal grooves (6) are arranged at intervals. One side of the tool head (5) is a cutting surface (10). The upper end of the cutting surface (10) is equipped with a blade (3). The upper surface of the blade (3) is basically flush with the tool head (5). The side of the blade (3) facing the cylindrical receiving cavity (4) has a cutting edge (11).

2. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The cutter head (5) and chip removal groove (6) are arranged in 3-4 sets at intervals.

3. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The cutting surface (10) of the cutter head (5) has a blade mounting position (9), and a screw fixing hole (8) is made in the blade mounting position (9). The blade (3) is positioned and installed in the blade mounting position (9) by fixing screws. The outer surface of the blade (3) is flush with the outer surface of the cutting surface (10) of the cutter head (5). The radial position of the cutting edge (11) of the blade (3) is consistent with the diameter of the cylindrical part (2) to be processed.

4. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The blade (3) is a triangular blade, and the two or three corners of the triangular blade are cutting edges (11).

5. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The blade (3) is a square blade (14), and the two to four corners of the square blade (14) are cutting edges (11).

6. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The depth of the cylindrical cavity (4) is consistent with the height of the cylindrical workpiece (2) to be processed.

7. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The other side of the cutter head (5) is the cutting back side (12), and the bottom of the chip removal groove (6) and the bottom of the cutting back side (12) are provided with an arc-shaped guide groove (13).

8. The milling machine-clamped tool for milling square blanks according to claim 1, characterized in that: The cutting surface (10) of the cutter head (5) is perpendicular to the axis, and the cutting back surface (12) is inclined at a 30-60 degree angle to the axis. The cutting back surface (12) is tangent to the outer edge of the cylindrical receiving cavity (4) in cross-section, which facilitates discharge.

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