Equal-height adjustable finish-milling three-side blade

Abstract

The equal-height adjustable finish-milling three-side edge comprises a cutter head body, a finish-milling cutter seat, a blade and an eccentric pin, the eccentric pin used for adjusting the blade is installed between the cutter head body and the finish-milling cutter seat, the blade is installed on the cutter head body through the finish-milling cutter seat, one end of the blade extends out of the finish-milling cutter seat, and the other end of the blade is connected with the eccentric pin. According to the utility model, radial fine adjustment can be carried out on the fine milling cutter seat by rotating the eccentric pin, so that the blades on the same surface can be radially adjusted, and the stability and the machining precision of the cutter in the milling process are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a precision three-edge milling cutter with adjustable equal height. Background Art

[0002] The three-edge milling cutter, abbreviated as three-edge cutter. In addition to the main cutting edge on the circumferential surface, the three-edge milling cutter also has secondary cutting edges on both sides, thus improving the cutting conditions, increasing the cutting efficiency and reducing the surface roughness. It is mainly used for milling the stepped surfaces and groove-shaped surfaces of metal materials with medium hardness and strength, and can also be used for processing non-metallic materials. The three-edge milling cutter for superhard materials is used for milling the stepped surfaces and groove-shaped surfaces of difficult-to-cut materials. When in use, the cutter is installed on the cutter bar of a horizontal milling machine, and of course it can also be installed on other machine tools.

[0003] Most of the existing three-edge milling cutter blades cannot be adjusted. When the tip of the blade wears, the blade cannot perform effective cutting. Secondly, if the blade can be adjusted, the requirements for the flatness and perpendicularity of the blade are also very high, and it is difficult for the blade to meet the specified requirements.

[0004] In order to solve the above problems, it is urgent to design a precision three-edge milling cutter with adjustable equal height, whose blade can be adjusted to adapt to the cutting of the workpiece to be processed. Secondly, the blade adjustment is stable to ensure the flatness and perpendicularity of the blade after adjustment. Content of the Utility Model

[0005] The utility model aims to overcome the above defects in the prior art and provides a precision three-edge milling cutter with adjustable equal height, whose blade can be adjusted to adapt to the cutting of the workpiece to be processed. Secondly, the blade adjustment is stable to ensure the flatness and perpendicularity of the blade after adjustment.

[0006] In order to achieve the above object, the technical solution adopted by the utility model is: a precision three-edge milling cutter with adjustable equal height, including a cutter disc body, a precision milling cutter seat, a blade and an eccentric pin. An eccentric pin for adjusting the blade is installed between the cutter disc body and the precision milling cutter seat. The blade is installed on the cutter disc body through the precision milling cutter seat, and one end of the blade extends out of the precision milling cutter seat.

[0007] As a preferred embodiment of the utility model, it includes a disc spring, and the disc spring is located between the cutter disc body and the eccentric pin.

[0008] As a preferred embodiment of the utility model, the eccentric pin includes a head and a rod portion, and an external thread is formed on the rod portion.

[0009] As a preferred embodiment of the utility model, the cutter disc body includes a mounting threaded hole, a fixing threaded hole and a mounting groove, and the precision milling cutter seat is installed in the mounting groove.

[0010] As a preferred embodiment of the present utility model, the finish milling cutter holder includes a positioning groove, a mounting hole and a limiting groove. The head of the eccentric pin is located in the positioning groove, and the rod portion of the eccentric pin enters the mounting threaded hole.

[0011] As a preferred embodiment of the present utility model, the positioning groove penetrates through the finish milling cutter holder.

[0012] As a preferred embodiment of the present utility model, it includes a cutter holder locking bolt. The cutter holder locking bolt passes through the mounting hole and the fixing threaded hole to realize the connection of the finish milling cutter holder on the cutter head body.

[0013] As a preferred embodiment of the present utility model, the cutting blade is arranged in the limiting groove and fixed on the limiting groove by bolts.

[0014] As a preferred embodiment of the present utility model, the cutter head body is made of an aluminum matrix composite material.

[0015] As a preferred embodiment of the present utility model, at least 3 finish milling cutter holders are arranged circumferentially and equiangularly on the cutter head body.

[0016] The beneficial effects of the present utility model are as follows:

[0017] 1. By rotating the eccentric pin, the present utility model can perform radial fine adjustment on the finish milling cutter holder, and further can perform radial adjustment on the cutting edges of the cutting blades on the same surface, ensuring the stability and machining accuracy of the tool during the milling process.

[0018] 2. The eccentric pin of the present utility model is hidden between the cutter head body and the finish milling cutter holder, and there will be no problem of the eccentric pin loosening and falling out. It is safe and reliable during use, easy, simple and fast to adjust, reducing the operation difficulty of the tool and the risk of tool scrapping.

[0019] 3. The cutter head body of the present utility model is made of an aluminum matrix composite material, making the tool relatively light. During use, the cutting speed of the tool can be appropriately increased, and multi-edge machining can be adopted to effectively improve the machining efficiency. Moreover, the cutting edges can all be adjusted, enabling each cutting edge to effectively perform cutting, reducing the wear time of the cutting edges, and reducing the tool cost.

[0020] 4. The eccentric pin of the present utility model can only be screwed into or out of the cutter head body to control the radial movement of the finish milling cutter holder. The adjustment of the finish milling cutter holder is single. Secondly, the cutting blade is installed on the finish milling cutter holder and is adjusted only through the finish milling cutter holder. Therefore, the adjustment of the cutting blade is stable and can ensure the flatness and perpendicularity of the cutting blade after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2This is the front view of the utility model;

[0023] Figure 3 This is the side view of the utility model;

[0024] Reference numerals in the figure: 1, cutter head body; 2, finish milling cutter holder; 3, cutting blade; 4, disc spring; 5, eccentric pin; 6, cutter holder locking bolt; 11, mounting threaded hole; 12, fixing threaded hole; 13, mounting groove; 21, positioning groove; 22, mounting hole; 23, limiting groove; 51, head; 52, rod part. Detailed implementation manners

[0025] The following will describe the embodiments of the utility model in detail with reference to the accompanying drawings.

[0026] As Figures 1-3 shown, a finish milling three-edge cutter with adjustable equal height includes a cutter head body 1, a finish milling cutter holder 2, a cutting blade 3 and an eccentric pin 5. An eccentric pin 5 for adjusting the cutting blade 3 is installed between the cutter head body 1 and the finish milling cutter holder 2. The cutting blade 3 is installed on the cutter head body 1 through the finish milling cutter holder 2, and one end of the cutting blade 3 extends out of the finish milling cutter holder 2.

[0027] A disc spring 4 is also arranged between the cutter head body 1 and the eccentric pin 5.

[0028] Specifically, a disc spring 4 and an eccentric pin 5 are installed between the cutter head body 1 and the finish milling cutter holder 2. The cutting blade 3 is installed on the finish milling cutter holder 2 through a cutting blade bolt, and the finish milling cutter holder 2 is locked on the cutter head body 1 through a cutter holder locking bolt 6;

[0029] When the cutter holder locking bolt 6 is not locked, by screwing out the eccentric pin 5, the finish milling cutter holder 2 in contact with the eccentric pin 5 can be extended towards the side away from the cutter head body 1, and further control the cutting blade 3 fixedly connected to the finish milling cutter holder 2 to extend outwards. After the adjustment of the cutting blade 3 is completed, tighten the cutter holder locking bolt 6 to ensure that the cutting blade 3 can be used normally;

[0030] The disc spring 4 between the eccentric pin 5 and the cutter head body 1 keeps the eccentric pin 5 in a stressed state at all times, so that there is an appropriate torque when it rotates and adjusts.

[0031] The height error of the tip of the above-mentioned adjusted cutting blade 3 is within 0.005 mm.

[0032] The eccentric pin 5 can only be screwed into or out of the cutter head body 1 to control the radial movement of the finish milling cutter holder 2. The adjustment of the finish milling cutter holder 2 is single. Secondly, the cutting blade 3 is installed on the finish milling cutter holder 2 and is adjusted only through the finish milling cutter holder 2. Therefore, the adjustment of the cutting blade 3 is stable and can ensure the flatness and perpendicularity of the cutting blade 3 after adjustment.

[0033] The utility model can perform radial fine adjustment on the fine milling cutter holder 2 by rotating the eccentric pin 5, and further can perform radial adjustment on the cutting blades 3 on the same surface, ensuring the stability and machining accuracy of the tool during the milling process.

[0034] The eccentric pin 5 includes a head 51 and a rod portion 52, and an external thread is formed on the rod portion 52.

[0035] The cutter head body 1 includes a mounting threaded hole 11, a fixing threaded hole 12 and a mounting groove 13. The fine milling cutter holder 2 is installed in the mounting groove 13. The mounting groove 13 facilitates the positioning and installation of the fine milling cutter holder 2 therein. At the same time, it restricts the fine milling cutter holder 2 from coming out of the cutter head body 1.

[0036] The fine milling cutter holder 2 includes a positioning groove 21, a mounting hole 22 and a limiting groove 23. The head 51 of the eccentric pin 5 is located in the positioning groove 21, and the rod portion 52 of the eccentric pin 5 enters the mounting threaded hole 11.

[0037] The cutting blade 3 is arranged in the limiting groove 23 and is fixed to the limiting groove 23 by bolts. The limiting groove 23 facilitates the positioning and installation of the cutting blade 3 therein. At the same time, it restricts the cutting blade 3 from coming out of the limiting groove 23.

[0038] The positioning groove 21 penetrates through the fine milling cutter holder 2, facilitating a tool to extend into the positioning groove 21 to rotate the eccentric pin 5.

[0039] The cutter holder locking bolt 6 passes through the mounting hole 22 and the fixing threaded hole 12 to realize the connection of the fine milling cutter holder 2 to the cutter head body 1.

[0040] Specifically, the head 51 of the eccentric pin 5 is located in the positioning groove 21 and is limited by the positioning groove 21. The tool rotates the eccentric pin 5 through the positioning groove 21, and further rotates the rod portion 52 of the eccentric pin 5. The rod portion 52 of the eccentric pin 5 is threadedly connected to the threaded hole 11. The screwing in or screwing out of the rod portion 52 in the threaded hole 11 controls the approach and separation of the fine milling cutter holder 2 from the cutter head body 1, thereby adjusting the cutting blade 3. After the adjustment is completed, the fine milling cutter holder 2 is fixed to the cutter head body 1 through the cutter holder locking bolt 6.

[0041] The eccentric pin 5 of the utility model is hidden between the cutter head body 1 and the fine milling cutter holder 2, and there will be no problem of the eccentric pin 5 loosening and coming out. It is safe and reliable in use, convenient, simple and fast to adjust, reducing the operation difficulty of the tool and the risk of tool scrapping.

[0042] The cutter head body 1 is made of an aluminum matrix composite material, effectively reducing the weight of the tool.

[0043] At least three fine milling cutter holders 2 are arranged circumferentially and equiangularly on the cutter head body 1.

[0044] Since the cutter head body 1 is made of aluminum matrix composite material, the cutting tools are relatively light. During use, the linear speed of the cutting tools can be appropriately increased, and multi-edge machining is adopted, which can effectively improve the machining efficiency. Moreover, the tool tips can be adjusted, enabling each tool tip to effectively perform cutting, reducing the wear time of the tool tips, and being very helpful for reducing the tool cost.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0046] Although the following terms are used more frequently in this text: 1, cutter head body; 2, fine milling cutter holder; 3, blade; 4, disc spring; 5, eccentric pin; 6, cutter holder locking bolt; 11, mounting threaded hole; 12, fixing threaded hole; 13, mounting groove; 21, positioning groove; 22, mounting hole; 23, limiting groove; 51, head; 52, rod portion, etc., the possibility of using other terms is not excluded; these terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A three-sided fine milling blade with adjustable height, characterized in that: The invention comprises a cutter disc body (1), a fine milling cutter seat (2), a blade (3) and an eccentric pin (5); an eccentric pin (5) for adjusting the blade (3) is installed between the cutter disc body (1) and the fine milling cutter seat (2); the blade (3) is installed on the cutter disc body (1) via the fine milling cutter seat (2); one end of the blade (3) extends out of the fine milling cutter seat (2).

2. The three-sided fine milling blade with equal height adjustment according to claim 1, characterized in that: It comprises a butterfly spring (4), wherein the butterfly spring (4) is located between the cutter disc body (1) and the eccentric pin (5).

3. The three-sided fine milling blade with adjustable height according to claim 1, characterized in that: The eccentric pin (5) comprises a head portion (51) and a rod portion (52), wherein the rod portion (52) is formed with an external thread.

4. The three-sided fine milling cutting edge with adjustable height according to claim 1, characterized in that: The cutter disc body (1) comprises a mounting threaded hole (11), a fixing threaded hole (12) and a mounting groove (13), and a fine milling cutter seat (2) is mounted in the mounting groove (13).

5. The three-sided fine milling cutting edge with adjustable height according to claim 1, characterized in that: The fine milling cutter seat (2) comprises a positioning groove (21), a mounting hole (22) and a limiting groove (23); the head (51) of the eccentric pin (5) is located in the positioning groove (21), and the rod (52) of the eccentric pin (5) enters the mounting threaded hole (11).

6. The three-sided fine milling cutting edge with adjustable height according to claim 5, characterized in that: The positioning groove (21) passes through the fine milling cutter seat (2).

7. The three-sided fine milling cutting edge with adjustable height according to claim 1, characterized in that: It comprises a cutter seat locking bolt (6), wherein the cutter seat locking bolt (6) passes through a mounting hole (22) and a fixing threaded hole (12) to achieve connection of the fine milling cutter seat (2) to the cutter disc body (1).

8. The equal height adjustable three-sided finishing cutting edge according to claim 1, characterized in that: The blade (3) is disposed in the limiting groove (23) and is fixed to the limiting groove (23) by means of bolts.

9. The equal height adjustable three-sided finishing cutting edge according to claim 1, characterized in that: The cutter disc body (1) is made of an aluminum-based composite material.

10. The equal height adjustable three-sided finishing cutting edge according to claim 7, characterized in that: At least three of the fine milling cutter seats (2) are arranged at equal angles in a circumferential direction on the cutter disc body (1).

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