Composite forming PCD (Poly Crystal Diamond) milling cutter

Abstract

The utility model relates to the technical field of cutters, and discloses a composite forming PCD milling cutter which comprises a cutter bar, a cutter head is arranged at the top of the cutter bar, a blade is fixedly installed at the top of the cutter head, the lower end of the cutter bar and the lower end of the cutter head are both cavities with openings in the bottoms, and connecting blocks are fixedly connected to the positions, close to the openings, in the cavities of the cutter head. A bayonet socket is fixedly mounted at the top of the cutter bar, a fixed connecting device is arranged in the cutter bar, and a mounting threaded groove is formed in the lower end of the outer side of the cutter bar. The special connecting mode of the cutter bar and the cutter head is adopted, so that not only is the connection firm and the operation simple and quick, but also the cutting edge can be ensured to be in a correct position.

Description

Technical Field

[0001] The utility model relates to the technical field of cutters, in particular to a composite formed PCD milling cutter. Background Art

[0002] Composite PCD milling cutter is a kind of cutting tool, which usually consists of two parts: blade and arbor. The blade is the part that performs cutting work, usually made of cemented carbide, high-speed steel, PCD (polycrystalline diamond) and other materials. Since PCD has very high hardness and good wear resistance, it can be used to process various materials, including hardened steel, hard aluminum alloy and other difficult-to-process materials; the arbor is used to install the blade, usually made of carbon tool steel or alloy steel. There is generally a cutting edge hole and a blade screw hole on the arbor, through which the blade can be installed on the arbor.

[0003] When using a PCD milling cutter to cut objects, different blades are often needed to cut different shapes. However, the position of the cutter head needs to be accurately determined after replacement to ensure that the cutting edge is in the correct position. If the position of the cutter head is incorrect, it may cause the cutting edge to deviate, which not only makes the cutter head replacement process difficult, but also affects the processing quality and efficiency. For this reason, we proposed a composite molding PCD milling cutter. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a composite formed PCD milling cutter to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a composite molded PCD milling cutter, comprising a tool rod, a tool head is arranged on the top of the tool rod, a blade is fixedly installed on the top of the tool head, the lower ends of the tool rod and the tool head are cavities with bottom openings, a connecting block is fixedly connected to a position near the opening in the cavity of the tool head, a socket is fixedly installed on the top of the tool rod, a fixed connecting device is arranged inside the tool rod, and a mounting thread groove is opened at the lower end of the outer side of the tool rod.

[0008] Preferably, a cylindrical groove is provided at the center of the upper surface of the connection block, and a square through groove perpendicular to the cylindrical groove is provided at the center of the upper surface of the connection block.

[0009] Preferably, a square groove is formed on the upper surface of the socket.

[0010] Preferably, the fixed connection device includes a rotating rod, a first limiting rod and a second limiting rod. The rotating rod is movably inserted at the center of the upper surface of the knife rod, the first limiting rod is fixedly connected to the upper end of the side surface of the rotating rod, and the second limiting rod is fixedly connected to the upper end of the side surface of the rotating rod corresponding to the bottom of the first limiting rod, and the second limiting rod is movably inserted in the square groove.

[0011] Preferably, the upper end of the rotating rod is movably inserted in the connecting block and extends to the upper surface of the connecting block.

[0012] Preferably, the fixed connection device further comprises a knob and a thread groove, the thread groove is provided at the lower end of the side of the rotating rod, and the lower end of the rotating rod extends to the bottom cavity of the knife rod and is threadedly connected with a knob.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a composite formed PCD milling cutter, which has the following beneficial effects:

[0015] The composite formed PCD milling cutter is designed to be detachable through the tool rod and the tool head, so that the tool head can be easily replaced. The tool head can be replaced by rotating the knob to drive the rotating rod to move up and down, and after the tool head is fixed, the tool head and the tool rod are tightly connected, so the operation is simple and fast. By tightly clamping the components in the fixed connection device, the position of the rear tool head is accurately determined after the rear tool head is replaced, so that the cutting edge can always be ensured to be in the correct position. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional schematic diagram of the cutter head of the utility model;

[0018] Figure 3 This is a schematic diagram of the lower end structure of the cutter head of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the tool bar of the utility model;

[0020] Figure 5 This is a schematic diagram of the cutter bar structure of the utility model.

[0021] In the figure: 1. knife bar; 2. knife head; 3. blade; 4. mounting thread groove; 5. connecting block; 6. socket; 7. fixed connection device; 8. cylindrical groove; 9. square through groove; 10. square groove; 11. rotating rod; 12. first limit rod; 13. second limit rod; 14. knob; 15. thread groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 A composite formed PCD milling cutter comprises a tool rod, a tool head is arranged on the top of the tool rod, a blade is fixedly installed on the top of the tool head, the lower ends of the tool rod and the tool head are both cavities with bottom openings, a connecting block is fixedly connected to a position near the opening in the cavity of the tool head, a socket is fixedly installed on the top of the tool rod, a fixed connecting device is arranged inside the tool rod, and a mounting thread groove is opened at the lower end of the outer side of the tool rod.

[0024] Furthermore, a cylindrical groove 8 is provided at the center of the upper surface of the connecting block 5 , and a square through groove 9 perpendicular to the cylindrical groove 8 is provided at the center of the upper surface of the connecting block 5 .

[0025] Furthermore, a square groove 10 is formed on the upper surface of the socket 6 .

[0026] Furthermore, the fixed connection device 7 includes a rotating rod 11, a first limiting rod 12 and a second limiting rod 13. The rotating rod 11 is movably inserted at the center of the upper surface of the knife rod 1, the upper end of the side surface of the rotating rod 11 is fixedly connected to the first limiting rod 12, and the upper end of the side surface of the rotating rod 11 is fixedly connected to the second limiting rod 13 corresponding to the lower side of the first limiting rod 12, and the second limiting rod 13 is movably inserted in the square groove 10.

[0027] Furthermore, the upper end of the rotating rod 11 is movably inserted into the connecting block 5 and extends to the upper surface of the connecting block 5 .

[0028] Furthermore, the fixed connection device 7 also includes a knob 14 and a thread groove 15. The thread groove 15 is provided at the lower end of the side of the rotating rod 11. The lower end of the rotating rod 11 extends to the bottom cavity of the knife rod 1 and is threadedly connected with the knob 14.

[0029] Working principle: When using the utility model, first rotate the knob 14 in the bottom cavity of the knife rod 1, and by rotating the knob 14, the rotating rod 11 moves upward, and the upper part of the rotating rod 11 drives the first limiting rod 12 to move above the plug-in seat 6, and drives the second limiting rod 13 to move to the upper end of the inner wall of the square groove 10. The second limiting rod 13 is clamped in the square groove 10 so that when the rotating rod 11 moves up and down, it will not rotate left and right. Then, the rotating rod 11 is inserted into the connecting block 5 in the inner cavity of the cutter head 2, so that the first limiting rod 12 passes through the square through-slot 9 and moves to the top of the connecting block 5, and then the cutter head 2 is rotated 90 degrees, and the connecting block is driven by the rotating cutter head 2. The cylindrical groove 8 on 5 is rotated to the bottom of the first limit rod 12, and then the rotating rod 11 is moved downward by rotating the knob 14 in the opposite direction, so that the first limit rod 12 at the top of the rotating rod 11 is clamped in the cylindrical groove 8, and the part between the lower end of the cutter head 2 and the connecting block 5 is clamped and connected to the socket 6, that is, the fixation of the tool rod 1 and the cutter head 2 as a whole is completed, and the positioning of the blade 3 is also completed; after the above operation is completed, the tool rod 1 is connected to the milling machine through the installation thread groove 4, and the cutting work can be carried out. When a different cutter head 2 needs to be replaced, it only needs to be disassembled and then replaced through the above operation. The operation is simple and quick, and the fixation of the tool rod 1 to the cutter head 2 is very tight.

[0030] 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 composite PCD milling cutter, comprising a cutter bar (1), characterized in that: A cutter head (2) is arranged at the top of the cutter rod (1), a blade (3) is fixedly mounted at the top of the cutter head (2), the lower ends of the cutter rod (1) and the cutter head (2) are both cavities with bottom openings, a connecting block (5) is fixedly connected to a position near the opening in the cavity of the cutter head (2), a socket (6) is fixedly mounted at the top of the cutter rod (1), a fixed connecting device (7) is arranged inside the cutter rod (1), and a mounting thread groove (4) is provided at the lower end of the outer side of the cutter rod (1).

2. The composite molded PCD milling cutter according to claim 1, characterized in that: A cylindrical groove (8) is provided at the centre of the upper surface of the connection block (5), and a square through groove (9) perpendicular to the cylindrical groove (8) is provided at the centre of the upper surface of the connection block (5).

3. The composite molded PCD milling cutter according to claim 1, characterized in that: A square groove (10) is provided on the upper surface of the socket (6).

4. The composite PCD milling cutter according to claim 3, characterized in that: The fixed connection device (7) comprises a rotating rod (11), a first limiting rod (12) and a second limiting rod (13); the rotating rod (11) is movably inserted at the center of the upper surface of the knife rod (1); the first limiting rod (12) is fixedly connected to the upper end of the side surface of the rotating rod (11); the second limiting rod (13) is fixedly connected to the upper end of the side surface of the rotating rod (11) corresponding to the lower side of the first limiting rod (12); and the second limiting rod (13) is movably inserted in the square groove (10).

5. The composite PCD milling cutter according to claim 4, characterized in that: The upper end of the rotating rod (11) is movably inserted into the connecting block (5) and extends to the upper surface of the connecting block (5).

6. The composite molded PCD milling cutter according to claim 5, characterized in that: The fixed connection device (7) further comprises a knob (14) and a thread groove (15); the thread groove (15) is provided at the lower end of the side surface of the rotating rod (11); the lower end of the rotating rod (11) extends to the bottom cavity of the knife rod (1) and is threadedly connected to the knob (14).

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