A type of end mill with integrated tool holder

Abstract

This utility model discloses an integrated milling cutter with a cutter head and a cutter shank. The end of the cutter shank has a clamping part with a clamping groove between it and the cutter head. Multiple telescopic grooves are evenly distributed on the outside of the clamping part, and telescopic locking blocks are installed in the grooves. Multiple sets of telescopic springs connect the bottom of the locking block to the bottom of the groove, and the springs press the locking block outwards to the groove opening. A groove is provided at the top of the clamping part, and a positioning pin is installed in the groove. A positioning spring is installed between the bottom of the positioning pin and the bottom of the groove, and the springs lift the positioning pin to the groove opening. The moving surface of the telescopic locking block is inclined, and the top is arc-shaped, facilitating retraction under pressure from the inner wall of the machine tool fixture during installation. No additional tools are needed for disassembly, as the springs automatically reset the positioning pin and locking block. This design provides additional locking force through the tight contact between the telescopic locking block and the inner wall of the machine tool fixture. The positioning pin and the fixture positioning hole cooperate to achieve precise positioning, effectively preventing rotation or axial displacement of the milling cutter during machining, enhancing connection stability, and simplifying operation.

Description

Technical Field

[0001] This utility model specifically relates to a milling cutter with an integrated tool holder. Background Technology

[0002] Milling cutters, as one of the most critical cutting tools in the field of mechanical manufacturing, are widely used in CNC machine tools, machining centers, and other equipment to perform various milling operations on workpieces, including planes, grooves, steps, and shaped surfaces. Their performance directly affects machining efficiency, machining accuracy, and workpiece surface quality.

[0003] Currently, the mainstream and commonly used end mill structures on the market usually adopt a split design, that is, the cutter head part made of indexable inserts or solid carbide, and the cutter shank part made of alloy steel or other materials are combined by means of mechanical clamping, heat fitting, or threaded connection.

[0004] While split-type structures offer advantages such as manufacturing flexibility, ease of tool head replacement, and reduced user costs, they inevitably experience minor deformations and displacements at the connection point when subjected to significant cutting forces, particularly the impact loads from intermittent cutting. This leads to a decrease in the overall rigidity of the tool, making it prone to vibration. This not only affects the surface finish of the machined material but also shortens tool life and, in extreme cases, can cause connection failure. Furthermore, existing one-piece end mills have fixed-size end-clamping sections that require precise matching with the clamping mechanism during installation. However, the one-piece end mill's shank cannot accurately adapt to some fixed-size clamping structures, resulting in reduced real-time machining efficiency.

[0005] Therefore, it is necessary to invent a milling cutter with an integrated tool holder to solve the above problems. Utility Model Content

[0006] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes an integrated end mill with a tool holder.

[0007] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: a milling cutter with an integrated cutter head and a milling cutter shank, wherein the milling cutter head and the milling cutter shank are integrally formed, and a clamping part is provided at the end of the milling cutter shank, and a clamping groove is provided between the clamping part and the milling cutter shank; The clamping part is provided with multiple evenly spaced telescopic grooves on the outside. Telescopic locking blocks are installed in the multiple telescopic grooves. Multiple sets of telescopic springs are fixed between the bottom of the multiple telescopic locking blocks and the bottom of the inner side of the telescopic groove. The telescopic springs press the telescopic locking blocks outward to the opening of the telescopic groove. The clamping part has a groove at the top, and a positioning post is installed in the groove. A positioning spring is installed between the bottom of the positioning post and the bottom of the inner side of the groove. The positioning spring lifts the positioning post to the opening of the groove.

[0008] Preferably, the telescopic groove opening is provided with an inwardly extending limiting frame, the end edge of the telescopic locking block is provided with a limiting strip matching the limiting frame, the other end of the telescopic locking block is fixed with a locking pad, and one side of the moving surface of the telescopic locking block is set as an inclined surface.

[0009] Preferably, the telescopic springs are disposed within the telescopic groove, and two sets are evenly distributed therein.

[0010] Preferably, the clamping part is hexagonal in shape, and the telescopic groove and the telescopic locking block are evenly spaced on the outer wall of the clamping part, and there are three sets in total.

[0011] Preferably, a stop block is provided at the groove opening, a limiting plate matching the stop block is provided at the bottom edge of the positioning post, and a positioning block is fixed on the outer wall of the positioning post, the overall shape of the positioning block matching the cross-sectional shape of the positioning post.

[0012] Preferably, the groove matches the cross-sectional shape of the positioning post, and both are hexagonal.

[0013] Preferably, the top of the locking pad is arc-shaped.

[0014] Compared with the prior art, the beneficial effects of the above-mentioned technical solution of this utility model are: 1. The clamping part of this utility model is equipped with a telescopic locking block and a positioning pin, which can enhance the stability of the connection between the milling cutter and the machine tool. The telescopic spring presses the telescopic locking block outward, making it in close contact with the inner wall of the machine tool fixture, providing additional locking force; the positioning pin rises under the action of the positioning spring, and cooperates with the positioning hole on the machine tool fixture to achieve precise positioning and prevent the milling cutter from rotating or axially displacing during the machining process; 2. The moving surface of the telescopic locking block of this utility model is set as an inclined surface, and the top of the locking pad is arc-shaped. During installation, the inner wall of the machine tool fixture will squeeze the telescopic locking block, so that it can be smoothly retracted into the telescopic groove, making it convenient for the milling cutter to be inserted into the fixture. During disassembly, the milling cutter can be gently pulled out, and the positioning pin and the telescopic locking block will automatically reset under the action of the spring. No additional disassembly tools are required, and the operation is simple. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled clamping part of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the disassembled clamping part of the present invention. Figure 2 ; Figure 4 This is a split view of the top structure of the clamping part of this utility model.

[0017] Explanation of reference numerals in the attached figures: 1. Milling cutter head; 2. Milling cutter shank; 3. Clamping part; 31. Telescopic groove; 311. Limiting frame; 32. Telescopic locking block; 321. Limiting strip; 322. Locking pad; 33. Telescopic spring; 34. Groove; 341. Stop block; 35. Positioning pin; 351. Limiting plate; 352. Positioning block; 36. Positioning spring; 4. Clamping groove. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0019] This utility model provides, for example Figure 1-4 The milling cutter shown includes a milling cutter head 1 and a milling cutter holder 2. The milling cutter head 1 and the milling cutter holder 2 are integrally formed. The end of the milling cutter holder 2 is provided with a clamping part 3, and a clamping groove 4 is provided between the clamping part 3 and the milling cutter holder 2. Specifically, the clamping part 3 is provided with a plurality of evenly spaced telescopic grooves 31. Telescopic locking blocks 32 are installed in the plurality of telescopic grooves 31. A plurality of telescopic springs 33 are fixed between the bottom of the plurality of telescopic locking blocks 32 and the bottom of the inner side of the telescopic grooves 31. The telescopic springs 33 press the telescopic locking blocks 32 outward to the opening of the telescopic grooves 31. Specifically, the top of the clamping part 3 is provided with a groove 34, a positioning post 35 is installed in the groove 34, and a positioning spring 36 is installed between the bottom of the positioning post 35 and the bottom of the inner side of the groove 34. The positioning spring 36 lifts the positioning post 35 to the opening of the groove 34.

[0020] Specifically, the telescopic groove 31 has an inwardly extending limiting frame 311 at the groove opening, the end edge of the telescopic locking block 32 has a limiting strip 321 that matches the limiting frame 311, the other end of the telescopic locking block 32 is fixed with a locking pad 322, and one side of the moving surface of the telescopic locking block 32 is set as an inclined surface.

[0021] Specifically, the telescopic springs 33 are arranged in the telescopic grooves 31, and two sets are evenly distributed.

[0022] Specifically, the clamping part 3 is hexagonal in shape, and the telescopic groove 31 and telescopic locking block 32 are evenly spaced on the outer wall of the clamping part 3, and there are three sets in total.

[0023] Specifically, a stop block 341 is provided at the groove opening of the groove 34, a limiting plate 351 matching the stop block 341 is provided at the bottom edge of the positioning post 35, and a positioning block 352 is fixed on the outer wall of the positioning post 35. The overall shape of the positioning block 352 matches the cross-sectional shape of the positioning post 35.

[0024] Specifically, the groove 34 and the positioning post 35 have matching cross-sectional shapes, and both are hexagonal.

[0025] Specifically, the top of the locking pad 322 is curved.

[0026] In this embodiment, the integrated milling cutter is integrally formed from the cutter head 1 and the cutter shank 2. The end of the cutter shank 2 is provided with a hexagonal clamping part 3, and a clamping groove 4 is opened between the two. Three sets of telescopic grooves 31 are evenly distributed on the outer wall of the clamping part 3. Each groove is equipped with a telescopic locking block 32. Two sets of evenly distributed telescopic springs 33 are fixed between the bottom of the locking block and the bottom of the groove. The springs press the locking block outward to the groove opening. A limiting frame 311 is provided at the groove opening of the telescopic groove 31. A matching limiting strip 321 is provided at the end of the telescopic locking block 32, and a locking pad 322 with an arc-shaped top is fixed at the other end. Its moving surface is set as an inclined surface.

[0027] Specifically, the clamping part 3 has a hexagonal groove 34 at its top, and a positioning post 35 with a matching cross-section is installed in the groove. A positioning spring 36 is installed between the bottom of the positioning post and the bottom of the groove, and the spring lifts the positioning post to the groove opening. A stop block 341 is provided at the groove opening, and a matching limiting plate 351 is provided at the bottom of the positioning post 35. A positioning block 352 with a suitable shape is fixed on the outer wall. During installation, the inner wall of the machine tool fixture presses the inclined surface of the telescopic locking block 32 to make it retract. After insertion, the spring pushes the locking block to fit against the inner wall of the fixture. The positioning post 35 cooperates with the positioning hole of the fixture. During disassembly, it can be directly pulled out, and the positioning post and locking block automatically reset under the action of the spring.

[0028] In this embodiment, the connection is highly stable, the telescopic locking block provides additional locking force through the spring, and the positioning pin and positioning hole are precisely matched to prevent the milling cutter from rotating or axially displacing during machining.

[0029] In this embodiment, installation and disassembly are convenient and require no additional tools. The inclined design of the telescopic locking block facilitates insertion, and the automatic spring reset simplifies operation.

[0030] In this embodiment, the structure is reasonably designed, and the limiting frame, limiting strip and other components prevent parts from falling off. The hexagonal structure and arc-shaped locking pad improve adaptability and contact stability.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A milling cutter with an integrated shank, characterized in that: It includes a milling cutter head (1) and a milling cutter shank (2). The milling cutter head (1) and the milling cutter shank (2) are integrally formed. The end of the milling cutter shank (2) is provided with a clamping part (3). A clamping groove (4) is provided between the clamping part (3) and the milling cutter shank (2). The clamping part (3) is provided with a plurality of evenly spaced telescopic grooves (31) on the outside. Telescopic locking blocks (32) are installed in the plurality of telescopic grooves (31). A plurality of telescopic springs (33) are fixed between the bottom of the plurality of telescopic locking blocks (32) and the bottom of the inner side of the telescopic groove (31). The telescopic springs (33) press the telescopic locking blocks (32) outward to the opening of the telescopic groove (31). The clamping part (3) has a groove (34) at the top, and a positioning post (35) is installed in the groove (34). A positioning spring (36) is installed between the bottom of the positioning post (35) and the bottom of the inner side of the groove (34). The positioning spring (36) lifts the positioning post (35) to the opening of the groove (34).

2. The end mill with an integrated shank as described in claim 1, characterized in that: The telescopic groove (31) has an inwardly extending limiting frame (311) at the opening, and the end edge of the telescopic locking block (32) has a limiting strip (321) that matches the limiting frame (311). The other end of the telescopic locking block (32) is fixed with a locking pad (322), and one side of the moving surface of the telescopic locking block (32) is set as an inclined surface.

3. The end mill with an integrated shank as described in claim 1, characterized in that: The telescopic spring (33) is disposed in the telescopic groove (31) and there are two sets evenly distributed thereon.

4. The end mill with an integrated shank as described in claim 1, characterized in that: The clamping part (3) is hexagonal in shape. The telescopic groove (31) and the telescopic locking block (32) are evenly spaced on the outer wall of the clamping part (3), and there are three sets in total.

5. A milling cutter with an integrated tool holder according to claim 1, characterized in that: The groove (34) is provided with a stop block (341), and the bottom edge of the positioning post (35) is provided with a limiting plate (351) that matches the stop block (341). The outer wall of the positioning post (35) is also fixed with a positioning block (352), and the overall shape of the positioning block (352) matches the cross-sectional shape of the positioning post (35).

6. A milling cutter with an integrated tool holder according to claim 5, characterized in that: The groove (34) matches the cross-sectional shape of the positioning post (35), and both are hexagonal.

7. A milling cutter with an integrated tool holder according to claim 2, characterized in that: The top of the locking pad (322) is arc-shaped.

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