Radial adjusting structure of heavy boring head

Abstract

The utility model relates to the technical field of machining numerical control tools, in particular to a radial adjusting structure of a heavy boring head, which comprises a main body and blade seats, two seat bodies are arranged at the top of the main body, each seat body is provided with a blade seat, each blade seat is provided with a threaded hole, each blade seat is provided with a fixing hole, and a connecting block is fixed at the bottom of each blade seat. Two adjusting grooves are formed in the main body, two adjusting holes are formed in the side wall of the main body, and the adjusting holes are communicated with the adjacent adjusting grooves; when the blade seat is fixed on the seat body, the connecting block extends into the adjusting groove, an adjusting bolt is further arranged in the adjusting groove, the adjusting bolt is connected with the connecting block through threads in a matched mode, the head of the adjusting bolt is aligned with the adjusting hole, and a fastening bolt penetrates through the fixing hole and is locked into the threaded hole. The utility model has the advantages that the structure is simple, the adjustment is convenient, the condition that the cutter body is separated from the cutter body due to inevitable tiny vibration in the machining process is avoided, and the machining size is very stable.

Description

Technical Field

[0001] This utility model relates to the field of CNC cutting tool technology in machining, and in particular to a radial adjustment structure for a roughing boring head. Background Technology

[0002] In the field of hole machining in mechanical manufacturing, boring tools are very important and widely used CNC cutting tools. The main function of rough boring tools is to quickly remove excess metal during hole enlargement. With the continuous development of high-speed, high-efficiency cutting technology and cutting machine tools, higher requirements are placed on the machining efficiency and reliability of boring tools.

[0003] Existing double-edged roughing tools often have complex radial adjustment mechanisms, numerous parts, and are difficult to assemble. Furthermore, during use, there are often risks of the adjustment mechanism falling off and unstable boring hole dimensions. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a radial adjustment structure for a roughing boring head.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A radial adjustment structure for a roughing boring head includes a main body and a blade holder. The top of the main body has two bases, each with a blade holder mounted on it. Each blade holder has a threaded hole and a fixing hole (elongated oval). A connecting block is fixed to the bottom of the blade holder. The main body has two adjustment grooves located between the two bases. Two adjustment holes are located on the side wall of the main body, communicating with adjacent adjustment grooves. When the blade holder is fixed to the base, the connecting block extends into the adjustment groove. An adjustment bolt is also provided in the adjustment groove, and the adjustment bolt is threadedly connected to the connecting block. The head of the adjustment bolt is aligned with the adjustment hole, and a fastening bolt passes through the fixing hole and locks into the threaded hole.

[0007] Furthermore, the length direction of the fixing hole is parallel to the length direction of the base.

[0008] Furthermore, the length of the adjusting groove is equal to the length of the adjusting bolt.

[0009] Furthermore, the adjusting bolt is an internal hex bolt, and the head of the internal hex bolt is larger than the inner diameter of the adjusting hole.

[0010] Furthermore, the side wall of the base is provided with scale lines, and the side wall of the blade holder is provided with marking lines.

[0011] This utility model has the following advantages:

[0012] 1. Safe and reliable. After assembly, the entire adjustment mechanism is fully embedded in the tool holder and the boring tool body adjustment groove. The adjustment mechanism will not detach from the tool body due to unavoidable minor vibrations during the machining process. At the same time, the adjustment mechanism has a foolproof design, so the operator does not need to spend too much effort to install it correctly, avoiding the situation where the adjustment mechanism detaches from the main body due to assembly reasons.

[0013] 2. During the machining process, the adjusting groove on the boring bar body is used to limit the adjusting bolt, so the relative position of the insert holder will not move. This effectively suppresses the tendency of the cutting diameter to decrease during machining, making the machining dimensions very stable. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0016] Figure 3 This is a side view of the present invention.

[0017] Figure 4 This is a three-dimensional structural diagram of the main body of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the blade holder of this utility model;

[0019] Figure 6 This is a schematic diagram of the front structure of the present invention. Figure 1 ;

[0020] Figure 7 This is a schematic diagram of the front structure of the present invention. Figure 2 ;

[0021] In the diagram: 1-Main body, 11-Seat body, 111-Scale line, 12-Adjustment groove, 13-Adjustment hole, 2-Blade holder, 21-Fixing hole, 22-Connecting block, 3-Blade, 4-Fastening bolt, 5-Adjustment bolt. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figures 1 to 5As shown, a radial adjustment structure for a roughing boring head includes a main body 1 and a blade holder 2. The main body 1 is equipped with a TMG21 modular interface. Two bases 11 are located on the top of the main body 1, and the two bases 11 are centrally symmetrical about the axis of the main body 1. The bases 11 and the main body 1 are integrally formed. Each base 11 is equipped with a blade holder 2, and a blade groove is formed on the outer corner of each blade holder 2. Each blade holder 2 is equipped with a blade 3, which is made of cemented carbide. Specifically, the blade 3 is locked and fixed in the blade groove by countersunk screws. The blade holder 2 has a threaded hole and a fixing hole 21. The fixing hole 21 is an elongated hole, and its length direction is parallel to the length direction of the base 11, facilitating the adjustment of the blade holder 2 along the length direction of the base 11. The bottom of the blade holder 2 is fixed with a connecting block 22, which is also an integrally formed structure with the blade holder 2. Two adjustment grooves 12 are opened on the main body 1, which are located between the two bases 11. The two adjustment grooves 12 are centrally symmetrical about the axis of the main body 1, and the length direction of the adjustment grooves 12 is consistent with the length direction of the bases 11. Two adjustment holes 13 are opened on the side wall of the main body 1, and the adjustment holes 13 are connected to the adjacent adjustment grooves 12. When the blade holder 2 is fixed on the base 11, the connecting block 22 extends into the adjustment groove 12. An adjustment bolt 5 is also provided in the adjustment groove 12. The adjustment bolt 5 is connected to the connecting block 22 by a threaded engagement. The head of the adjustment bolt 5 is aligned with the adjustment hole 13. A fastening bolt 4 is passed through the fixing hole 21 and locked into the threaded hole. Before locking, rotate the adjusting bolt 5 so that the adjusting bolt 5 and the connecting block 22 rotate relative to each other. Since the connecting block 22 is restricted by the adjusting groove 12, the connecting block 22 moves along the length direction in the adjusting groove 11, thereby allowing the blade holder 2 to slide along the length direction of the seat body 11. When it slides to the predetermined position, it is locked with the fastening bolt 4.

[0024] Furthermore, the length of the adjusting groove 12 is equal to the length of the adjusting bolt 5, and the adjusting bolt 5 cannot move axially within the adjusting groove 12, but can only rotate.

[0025] Furthermore, the adjusting bolt 5 is a hex socket head cap screw, and the head of the hex socket head cap screw is larger than the inner diameter of the adjusting hole 13, thereby restricting the axial movement of the adjusting bolt 5 into the adjusting hole 13. It should be noted that the inner diameter of the adjusting hole 13 only needs to be slightly smaller than the head of the hex socket head cap screw to ensure that the hex wrench inserted into the adjusting hole 13 can be engaged in the hex socket groove of the hex socket head cap screw.

[0026] Furthermore, such as Figure 1As shown, the side wall of the base 11 is provided with a scale line 111, and the side wall of the blade holder 2 is provided with a marking line. When the blade holder 2 moves relative to the base 11, the marking line can move relative to the scale line 111. The reading of the marking line on the scale line 111 corresponds to the cutting diameter of the blade 3, and the cutting diameter of the blade 3 can be read intuitively.

[0027] like Figure 6 As shown, the two blade holders 2 have the same adjustment range, and the two blades 3 have the same cutting diameter, both Dc, which can be used for rapid removal of excess material. Figure 7 As shown, the two insert holders 2 have different adjustment ranges, and the two inserts 3 have different cutting diameters, Dm and Dc, respectively. The insert 3 with a cutting diameter of Dm is used to remove excess material, while Dc determines the final machining dimension.

[0028] In addition, the adjustment groove 12 is designed to prevent mistakes. Specifically, the size of the adjustment groove 12 on the side closer to the adjustment hole 13 is larger than the size on the side farther away from the adjustment hole 13. This ensures that when installing the adjustment bolt 5, the blade holder 2 can only be assembled with the main body 1 if the head of the adjustment bolt 5 is correctly facing the adjustment hole 13, thus avoiding incorrect assembly due to operational errors.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radial adjustment structure for a rough boring head, comprising a main body (1) and a blade holder (2), wherein the top of the main body (1) is provided with two seats (11), each seat (11) is respectively mounted with a blade holder (2), each blade holder (2) is mounted with a blade (3), and the blade holder (2) is provided with a threaded hole, characterized in that: The blade holder (2) has a fixing hole (21), which is an elongated hole, and a connecting block (22) is fixed to the bottom of the blade holder (2). Two adjustment slots (12) are provided on the main body (1), and the two adjustment slots (12) are located between two seats (11). Two adjustment holes (13) are provided on the side wall of the main body (1), and the adjustment holes (13) are connected to the adjacent adjustment slots (12). When the blade holder (2) is fixed on the base (11), the connecting block (22) extends into the adjusting groove (12). The adjusting groove (12) is also provided with an adjusting bolt (5). The adjusting bolt (5) is connected to the connecting block (22) by a threaded connection. The head of the adjusting bolt (5) is aligned with the adjusting hole (13). A fastening bolt (4) is passed through the fixing hole (21) and locked into the threaded hole.

2. The radial adjustment structure of a roughing boring head according to claim 1, characterized in that: The length direction of the fixing hole (21) is parallel to the length direction of the base (11).

3. The radial adjustment structure of a roughing boring head according to claim 1, characterized in that: The length of the adjusting groove (12) is equal to the length of the adjusting bolt (5).

4. The radial adjustment structure of a roughing boring head according to claim 3, characterized in that: The adjusting bolt (5) is an internal hex bolt, and the head of the internal hex bolt is larger than the inner diameter of the adjusting hole (13).

5. The radial adjustment structure of a roughing boring head according to claim 1, characterized in that: The side wall of the base (11) is provided with scale lines (111), and the side wall of the blade holder (2) is provided with marking lines.

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