Engraving and milling cutter head capable of being matched with cutter handles of different sizes and used for non-traditional machining

Abstract

The utility model belongs to the technical field of machining, particularly relates to an engraving and milling cutter head capable of being matched with cutter handles of different sizes for non-traditional machining, and aims to solve the problem that an existing device cannot be matched with machine tools of the cutter handles of different sizes for use. The other end of the tool bit body is fixedly connected with a connecting shaft; the elastic clamping piece has the advantages that the elastic clamping pieces which are annularly distributed and are of the conical structure can adapt to cutter handles with different diameters and evenly contract inwards under the action of the abutting sleeve, so that the cutter handles are tightly wrapped, and reliable connection can be achieved through self-adaptive deformation of the elastic clamping pieces; the adjacent elastic clamping pieces can be properly deformed through the gaps between the elastic clamping pieces so as to adapt to knife handles with different diameters, so that the adaptation range of the knife head to the sizes of the knife handles is widened, the knife head can be used for the knife handles with different specifications, and the universality of the knife head is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a carving and milling tool bit, specifically to a special machining carving and milling tool bit capable of adapting to different sizes of tool shanks, and belongs to the technical field of machining. BACKGROUND

[0002] In the field of special machining, such as precision mold manufacturing and small complex part machining, the carving and milling process is widely used. As a key component of the carving and milling process, the performance and versatility of the carving and milling tool bit have an important influence on the machining efficiency and quality.

[0003] In the prior art, such as the special machining carving and milling tool bit disclosed in the announcement No. CN202321170809.X, the tool head is threadedly connected with the tool body through a second connecting column, and the tool shank is threadedly connected with the tool body through a first connecting column. The tool head and the tool shank are detachably connected with the tool body, so as to facilitate the user to replace the damaged tool head. However, the prior technical solution has the following disadvantages: when the carving and milling tool bit is used, the carving and milling tool bit is usually fixedly connected with a tool shank of a specific size. When a machine tool with a tool shank of a different size needs to be replaced for machining, the entire carving and milling tool needs to be replaced, which not only increases the tool cost, but also causes clamping errors due to frequent replacement of the tool, affecting the machining precision and efficiency. UTILITY MODEL CONTENT

[0004] The utility model aims to solve the problem that the above-mentioned device cannot be used in adaptation with machine tools with tool shanks of different sizes, and provides a special machining carving and milling tool bit capable of adapting to tool shanks of different sizes.

[0005] The utility model realizes the above-mentioned purpose through the following technical solution: a special machining carving and milling tool bit capable of adapting to tool shanks of different sizes, comprising a tool head body, one end of the tool head body is integrally formed with a cutting edge, and the other end of the tool head body is fixedly connected with a connecting shaft.

[0006] A fixing sleeve is sleeved outside the connecting shaft, one end of the fixing sleeve is fixedly connected with the tool head body, the fixing sleeve is internally provided with an elastic clamping piece of a conical structure, one end of the elastic clamping piece extends out of the fixing sleeve, and the outside of the fixing sleeve is provided with an abutting sleeve, and an inner wall of one end of the abutting sleeve is integrally formed with a guide conical surface.

[0007] As a further scheme of the utility model, the elastic clamping piece has a plurality of elastic clamping pieces, the plurality of elastic clamping pieces are uniformly distributed in the circumferential direction, a gap is arranged between the adjacent two elastic clamping pieces, and the inner surface of the elastic clamping piece is provided with an anti-skid pattern.

[0008] As a further scheme of the utility model: the inner surface of the elastic clamping sheet is integrally formed with an insertion block, a blind groove that is matched with the insertion block is formed on the outer surface of one end of the connecting shaft, and the elastic clamping sheet is slidably connected to the outer side of the connecting shaft through the insertion block and the blind groove.

[0009] As a further scheme of the utility model: a spring is installed in the blind groove formed on the outer surface of one end of the connecting shaft, and one end of the spring abuts against one end of the insertion block.

[0010] As a further scheme of the utility model: a limiting convex is integrally formed on the inner side surface of the abutting sleeve, a limiting concave that is matched with the limiting convex is formed on the outer surface of the fixing sleeve, and the abutting sleeve is slidably connected to the outer side of the fixing sleeve through the limiting convex and the limiting concave.

[0011] As a further scheme of the utility model: a fastening screw sleeve is threadedly connected to the outer surface of the fixing sleeve, an anti-skid rib is integrally formed on the outer surface of the fastening screw sleeve, and the fastening screw sleeve abuts against the bottom of the abutting sleeve.

[0012] As a further scheme of the utility model: a limiting screw hole is formed on the outer side of the abutting sleeve, a one-word external thread limiting nail is threadedly connected in the limiting screw hole, a slotted sleeve is integrally formed on the surface of the fastening screw sleeve, and a groove that is matched with the one-word external thread limiting nail is uniformly formed in the surface of the slotted sleeve in a ring shape.

[0013] The utility model discloses the beneficial effect is:

[0014] The utility model discloses the cooperation of the structure of the knife head body, the fixed sleeve, the elastic clamping sheet, the anti -skid line, the insertion block, the spring, the abutting sleeve, the guide taper, the anti -skid rib, the limiting convex and the slotted sleeve etc.

[0015] The cooperation of the guide taper and the elastic clamping sheet makes the clamping force evenly distribute on the circumferential surface of the shank, compared with some non -tapered structure's clamping mode, this kind of even clamping force can effectively avoid local stress concentration, reduce the damage to the shank surface, can also more stably transmit the torque simultaneously, in the engraving and milling process, ensure the reliability of the connection of the cutter head and the shank, reduce the risk such as the decline of processing accuracy or tool damage caused by loose connection.

[0016] The gaps between the adjacent elastic clamping pieces make the elastic clamping pieces have better elasticity and self-adaptability, and when the size of the tool shank changes, the elastic clamping pieces can be deformed through the gaps to adapt to tool shanks of different diameters, thereby widening the adaptation range of the tool bit to the size of the tool shank, enabling the tool bit to be used for tool shanks of various specifications, and improving the universality of the tool bit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the elastic clamping piece, the fixing sleeve and the connecting shaft in the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the abutting sleeve, the guide conical surface and the limiting boss in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the limiting screw hole, the anti-skid rib and the fastening screw sleeve in the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the utility model Figure 2 A structure in the utility model is enlarged and shown;

[0022] In the figure: 1, tool bit body; 2, cutting edge; 3, fixing sleeve; 4, elastic clamping piece; 5, anti-skid rib; 6, insertion block; 7, spring; 8, abutting sleeve; 9, guide conical surface; 10, fastening screw sleeve; 11, anti-skid rib; 12, connecting shaft; 13, limiting groove; 14, limiting boss; 15, slotted sleeve; 16, one-dot external thread limiting pin; 17, limiting screw hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0024] As shown in Figures 1 to 5 A special machining engraving tool bit capable of adapting to tool shanks of different sizes, comprising a tool bit body 1, the tool bit body 1 is integrally formed with a cutting edge 2 at one end, and the other end of the tool bit body 1 is fixedly connected with a connecting shaft 12;

[0025] The outer side of the connecting shaft 12 is sleeved with a fixed sleeve 3, one end of the fixed sleeve 3 is fixedly connected with the cutter head body 1, the inside of the fixed sleeve 3 is provided with a tapered structure elastic clamping piece 4, one end of the elastic clamping piece 4 extends out of the fixed sleeve 3, the outer side of the fixed sleeve 3 is provided with a abutting sleeve 8, one end of the inner wall of the abutting sleeve 8 is integrally formed with a guide taper surface 9.

[0026] The plurality of annularly distributed tapered structure elastic clamping pieces 4 can adapt to different diameters of the shank, and the elastic clamping pieces 4 uniformly shrink inward under the action of the abutting sleeve 8, thereby tightly wrapping the shank. Whether the shank is small in diameter or large in diameter (as long as it is within the designed adaptation range), reliable connection can be achieved through the self-adaptive deformation of the elastic clamping pieces 4, greatly improving the universality of the engraving and milling cutter head for different sizes of shanks. The cooperation of the guide taper surface 9 and the elastic clamping piece 4 makes the clamping force uniformly distributed on the circumferential surface of the shank. Compared with some non-tapered structure clamping methods, this uniform clamping force can effectively avoid local stress concentration and reduce damage to the surface of the shank, while also more stably transmitting torque, ensuring the reliability of the connection between the cutter head and the shank during engraving and milling processing, and reducing the risk of decreased processing accuracy or tool damage due to loose connection.

[0027] Further, the elastic clamping piece 4 has a plurality of elastic clamping pieces 4, and the plurality of elastic clamping pieces 4 are uniformly distributed in the circumferential direction, and a gap is provided between adjacent two elastic clamping pieces 4, and the inner surface of the elastic clamping piece 4 is provided with an anti-skid pattern 5.

[0028] The plurality of elastic clamping pieces 4 are uniformly distributed in the circumferential direction, and these elastic clamping pieces 4 can uniformly shrink towards the center to tightly hold the shank. This uniform holding force can ensure that the shank is stably clamped at each point in the circumferential direction, avoiding the installation of the shank to be skewed or vibration during processing due to uneven local stress, improving the processing accuracy. The gap between adjacent elastic clamping pieces 4 enables the elastic clamping piece 4 to have better elasticity and self-adaptive ability. When the size of the shank changes, the elastic clamping piece 4 can deform appropriately through the gap to adapt to different diameters of the shank (as long as it is within the designed adaptation range), thereby widening the adaptation range of the cutter head to the size of the shank, enabling the cutter head to be used for a variety of different specifications of shanks, and improving the universality of the cutter head. The anti-skid pattern 5 on the inner surface of the elastic clamping piece 4 can significantly enhance the friction between the cutter head and the shank. The anti-skid pattern 5 can effectively prevent the shank from slipping relative to the elastic clamping piece 4, ensuring that the connection between the cutter head and the shank is firm and reliable.

[0029] Further, the inner surface of the elastic clamping piece 4 is integrally formed with an insertion block 6, one end of the outer surface of the connecting shaft 12 is provided with a blind groove matched with the insertion block 6, the elastic clamping piece 4 is slidably connected to the outer side of the connecting shaft 12 through the insertion block 6 and the blind groove, a spring 7 is installed in the blind groove opened on one end of the outer surface of the connecting shaft 12, and one end of the spring 7 abuts against one end of the insertion block 6.

[0030] The cooperation of the plug-in block 6 and the blind groove provides accurate positioning for the elastic clamping piece 4, ensures that the elastic clamping piece 4 is accurately positioned in the circumferential direction and the axial direction outside the connecting shaft 12, helps the installation of tool shanks of different sizes, improves the assembly efficiency, and the matched spring 7 is compressed when the tool shank is connected, and under the elastic action of the spring 7, the plug-in block 6 can drive the elastic clamping piece 4 to move away from the tool shank, which is beneficial to the maintenance and replacement of the tool head; Embodiment two

[0031] On the basis of embodiment one, the improvements are as follows:

[0032] Further, the inner side surface of the abutting sleeve 8 is integrally formed with a limiting boss 14, the outer surface of the fixed sleeve 3 is provided with a limiting groove 13 matched with the limiting boss 14, and the abutting sleeve 8 is slidably connected to the outer side of the fixed sleeve 3 through the limiting boss 14 and the limiting groove 13.

[0033] The movement of the abutting sleeve 8 can be limited to prevent the abutting sleeve 8 from falling off.

[0034] Further, the outer surface of the fixed sleeve 3 is threadedly connected with a fastening nut 10, the outer surface of the fastening nut 10 is integrally formed with an anti-skid rib 11, and the fastening nut 10 abuts against the bottom of the abutting sleeve 8.

[0035] The anti-skid rib 11 is arranged to facilitate the disassembly and assembly of the fastening nut 10 by the worker.

[0036] Further, the outer side of the abutting sleeve 8 is provided with a limiting screw hole 17, a one-way external thread limiting pin 16 is threadedly connected in the limiting screw hole 17, the surface of the fastening nut 10 is integrally formed with a slotted sleeve 15, and the surface of the slotted sleeve 15 is annularly and uniformly provided with a groove matched with the one-way external thread limiting pin 16.

[0037] During the engraving and milling process, the fastening nut 10 may be loose due to the high-speed rotation of the cutter and the cutting force, the limiting screw hole 17 is arranged on the outer side of the abutting sleeve 8, and the one-way external thread limiting pin 16 is matched with the groove of the slotted sleeve 15 on the fastening nut 10, which can effectively limit the rotation of the fastening nut 10, thereby avoiding accidental loosening during work, ensuring that the clamping force of the elastic clamping piece 4 on the tool shank does not change due to vibration, ensuring the stability of the connection between the tool head and the tool shank, and being beneficial to improving the machining precision and the service life of the cutter.

[0038] Working principle: in use, according to the actual processing needs to select the corresponding size of the handle, then the handle is inserted into the elastic clamping piece 4 extending from one end of the fixed sleeve 3, and then the fastening nut 10 outside the fixed sleeve 3 is tightened, which promotes the movement of the fastening nut 10 on the fixed sleeve 3 and pushes the abutting sleeve 8, which in turn makes the multiple elastic clamping pieces 4 shrink inward at the same time, and cooperates with the anti-skid line 5 to tightly hold the handle, so as to realize the connection of the engraving and milling cutter head and the handle. When different sizes of handles need to be replaced, only the fastening nut 10 needs to be loosened, and then it can be tightened again after replacing the handle.

[0039] The multiple annularly distributed conical structure elastic clamping pieces 4 can uniformly shrink inward under the action of the abutting sleeve 8, thereby tightly wrapping the handle. Whether the handle is small in diameter or large in diameter (as long as it is within the designed adaptation range), reliable connection can be achieved through the self-adaptive deformation of the elastic clamping pieces 4, greatly improving the versatility of the engraving and milling cutter head for different sizes of handles. The cooperation of the lead cone surface 9 and the elastic clamping piece 4 makes the clamping force uniformly distributed on the circumferential surface of the handle. Compared with some non-conical structure clamping methods, this uniform clamping force can effectively avoid local stress concentration, reduce damage to the handle surface, and more stably transmit torque, ensuring the reliability of the connection between the cutter head and the handle during engraving and milling processing, and reducing the risk of processing precision decline or tool damage due to loose connection.

[0040] The multiple elastic clamping pieces 4 are uniformly distributed in the circumferential direction, which can uniformly shrink to the center and tightly hold the handle. This uniform clamping force can ensure that the handle is stably clamped at each point in the circumferential direction, avoiding the installation of the handle to be skewed or vibrating during processing due to uneven local stress, improving processing accuracy. The gap between adjacent elastic clamping pieces 4 makes the elastic clamping pieces 4 have better elasticity and self-adaptive ability. When the size of the handle changes, the elastic clamping pieces 4 can deform appropriately through the gaps to adapt to different diameters of the handle (as long as it is within the designed adaptation range), thereby widening the adaptation range of the cutter head to the handle size, making the cutter head can be used for multiple different specifications of the handle, improving the versatility of the cutter head. The anti-skid line 5 on the inner surface of the elastic clamping piece 4 can significantly enhance the friction between the cutter head and the handle. The anti-skid line 5 can effectively prevent the handle from slipping inside the elastic clamping piece 4, ensuring the firm and reliable connection between the cutter head and the handle.

[0041] The cooperation of the plug 6 and the blind slot provides accurate positioning for the elastic clamping piece 4, ensures that the elastic clamping piece 4 is accurately positioned in the circumferential direction and the axial position outside the connecting shaft 12, helps the installation of the tool shank of different sizes, improves the assembly efficiency, and the matched spring 7 is compressed when the tool shank is connected, and when the tool shank is disassembled, the spring 7 can move the plug 6 to drive the elastic clamping piece 4 to move away from the tool shank under the elasticity of the spring 7, which is beneficial to the maintenance and replacement of the tool bit;

[0042] During the engraving and milling process, the fastening screw sleeve 10 may be loose due to the high-speed rotation of the cutter and the cutting force. By arranging the limiting screw hole 17 outside the abutting sleeve 8 and cooperating the slot sleeve 15 on the fastening screw sleeve 10 with the one-word external thread limiting pin 16, the rotation of the fastening screw sleeve 10 can be effectively limited, so as to avoid accidental loosening during work, so that the clamping force of the elastic clamping piece 4 on the tool shank will not change due to vibration, ensuring the stability of the connection between the tool bit and the tool shank, and being beneficial to improving the machining precision and the service life of the cutter.

[0043] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0044] In addition, it should be understood that although the present application is described in the specification, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A special processing engraving cutter head that can adapt to different sizes of tool shanks, comprising a cutter head body (1), characterized in that: One end of the cutter head body (1) is integrally formed with a cutting edge (2), and the other end of the cutter head body (1) is fixedly connected with a connecting shaft (12); The outer side of the connecting shaft (12) is sleeved with a fixed sleeve (3), one end of the fixed sleeve (3) is fixedly connected with the cutter head body (1), the inside of the fixed sleeve (3) is provided with a tapered elastic clamping piece (4), one end of the elastic clamping piece (4) extends out of the fixed sleeve (3), and the outer side of the fixed sleeve (3) is provided with a abutting sleeve (8), and one end of the abutting sleeve (8) is integrally formed with a guide taper surface (9).

2. The special machining engraving cutter head of claim 1, wherein: The elastic clamping piece (4) has a plurality of elastic clamping pieces (4), and the plurality of elastic clamping pieces (4) are uniformly distributed in the circumferential direction, and a gap is arranged between the two adjacent elastic clamping pieces (4), and the inner surface of the elastic clamping piece (4) is provided with anti-skid lines (5).

3. The special machining engraving cutter head of claim 1, wherein: The inner surface of the elastic clamping piece (4) is integrally formed with an insertion block (6), and the outer surface of one end of the connecting shaft (12) is provided with a blind groove matched with the insertion block (6), and the elastic clamping piece (4) is slidably connected to the outer side of the connecting shaft (12) through the insertion block (6) and the blind groove.

4. The special machining engraving cutter head of claim 1, wherein: The blind groove opened on the outer surface of one end of the connecting shaft (12) is provided with a spring (7), and one end of the spring (7) abuts against one end of the insertion block (6).

5. The special machining engraving cutter head of claim 1, wherein: The inner surface of the abutting sleeve (8) is integrally formed with a limiting boss (14), and the outer surface of the fixed sleeve (3) is provided with a limiting groove (13) matched with the limiting boss (14), and the abutting sleeve (8) is slidably connected to the outer side of the fixed sleeve (3) through the limiting boss (14) and the limiting groove (13).

6. The special machining engraving cutter head of claim 1, wherein: The outer surface of the fixed sleeve (3) is threadedly connected with a fastening sleeve (10), the outer surface of the fastening sleeve (10) is integrally formed with an anti-skid rib (11), and the fastening sleeve (10) abuts against the bottom of the abutting sleeve (8).

7. The special machining engraving cutter head of claim 6, wherein: The outer side of the abutting sleeve (8) is provided with a limiting screw hole (17), and the limiting screw hole (17) is threadedly connected with a one-way external thread limiting pin (16), the surface of the fastening sleeve (10) is integrally formed with a slotted sleeve (15), and the surface of the slotted sleeve (15) is annularly and uniformly provided with a groove matched with the one-way external thread limiting pin (16).

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