Assembly type high-precision inner-cooling forming milling cutter structure

Abstract

The utility model relates to the field of milling cutter bodies, in particular to an assembly type high-precision inner-cooling forming milling cutter structure which comprises a milling cutter body, the cutting portion of the cutter body is designed to be in a stepped mode, when the cutter head cuts a to-be-machined product, waste chips can be rapidly discharged upwards through the curvature of the multiple stepped portions, cooling liquid is sprayed outwards through a circulation groove formed in the cutter body, the inner cooling effect is achieved, local overheating of the cutter head is prevented, and the service life of the cutter head is prolonged. A plurality of spraying holes with different sizes are formed in the surface of the step part, cooling liquid can be sprayed outwards to cool a tool bit and a workpiece, meanwhile, sweeps can be rapidly discharged through the outward spraying angle, the cleaning effect of the sweeps is improved, cutting force can be dispersed through the sawtooth shape formed by the step part of the cutting part of the tool body, and the cutting efficiency is improved. The surface stress of the milling cutter body is balanced, the stability of the milling cutter body during operation is improved, and meanwhile the vibration phenomenon of the milling cutter body is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of milling cutter, especially a kind of assembled high-precision internal cooling forming milling cutter structure. BACKGROUND

[0002] Milling cutter is a rotary cutter with one or more teeth used for milling. Each tooth cuts off the excess of the workpiece intermittently in turn during work. Milling cutter is mainly used for machining plane, step, groove, shaped surface and cutting off workpiece on milling machine. With the continuous development of machining technology, the form of milling cutter is also constantly innovated and evolved. Modern milling cutter design tends to be high efficiency, high precision and multifunctional to meet the complex processing requirements.

[0003] However, under extreme working conditions such as high-speed cutting and high-hardness material machining, milling cutter is often affected by large cutting force and vibration, resulting in serious wear and vibration during use. Although the traditional milling cutter design improves wear resistance by increasing hardness and coating, the accumulation of chips on the tool surface due to poor chip removal exacerbates tool wear and heat accumulation. In addition, due to the traditional milling cutter blade angle of ninety degrees, resonance phenomenon occurs during cutting, affecting the stability and precision of machining.

[0004] Therefore, an assembled high-precision internal cooling forming milling cutter structure is proposed to solve the above problems. SUMMARY

[0005] The purpose of the utility model is to provide an assembled high-precision internal cooling forming milling cutter structure to solve the above problems and improve the anti-shock, heat dissipation and poor chip removal effect of traditional milling cutter.

[0006] The utility model realizes the above-mentioned purpose through the following technical scheme, an assembled high-precision internal cooling forming milling cutter structure, comprising: a milling cutter body, a connecting seat is assembled on the top end of the milling cutter body and connected to the output end of the machine;

[0007] The milling cutter body is mainly composed of a tool shank and a tool head;

[0008] The tool shank includes a rod body in the connecting seat, a flow-through hole is formed in the middle part of the rod body, and the flow-through hole is in communication with the connecting seat;

[0009] The tool head includes a tool body arranged at the bottom end of the rod body, a flow-through groove is formed on the surface of the tool body, and the flow-through groove is in communication with the flow-through hole.

[0010] Preferably, the cutting parts on both sides of the cutter body are designed in a stepped manner as a whole, wherein each step is staggered, and through the above description, the serrated structure formed by the steps of the cutter body can effectively disperse the cutting force when the cutter body is machined, so that the surface of the cutter body is balanced, thereby improving the stability of the cutter body during operation.

[0011] Preferably, the steps of the cutter body are provided with spray holes, and the number of the spray holes is consistent with the number of the steps of the cutter body. Through the spray holes, the cooling liquid can be quickly discharged during machining to prevent overheating of the workpiece surface.

[0012] Preferably, the spray holes are vertically arranged, and the diameters of the plurality of spray holes are arranged from small to large from top to bottom. Through the above description, the appropriate amount of cooling liquid can be sprayed through the spray holes at different positions to maintain the temperature of the cutter body during machining.

[0013] Preferably, the topmost spray hole is circular in plan view, and the bottommost spray hole is vertically elliptical in plan view.

[0014] Preferably, the spray holes are in communication with the flow grooves, and the spray directions of the plurality of spray holes are outward. Through the above description, the cutting waste during machining of the workpiece can be quickly discharged and cleaned by the outwardly sprayed cooling liquid.

[0015] Preferably, the steps of the cutter body are designed in a recessed manner, and the bottom end of the step of the cutter body is designed in a protruding manner. Through the above description, the cutting effect of the cutter body can be improved by the protruding part.

[0016] Preferably, the surface of the cutter body is provided with a spiral groove, and the curvature of the spiral groove is consistent with the arrangement curvature of the steps of the cutter body.

[0017] Preferably, both sides of the cutter body are provided with steps, and the included angle of the two steps in plan view is sixty degrees. Through the above description, the anti-shock effect of the cutter body during operation can be improved.

[0018] Preferably, the inner bottom height of the flow groove is aligned with the spray hole of the last step, and the flow hole is fan-shaped in plan view.

[0019] The beneficial effects of the utility model are:

[0020] 1. By designing the cutting section of the tool body with a stepped structure, the curvature of multiple steps allows for rapid chip removal during cutting. Simultaneously, flow channels within the tool body allow coolant to spray outwards during machining, achieving internal cooling and effectively preventing localized overheating of the tool head. Furthermore, multiple nozzles of varying sizes are positioned on the surface of the stepped sections, spraying coolant to cool both the tool head and workpiece while simultaneously removing chips rapidly at an outward angle, improving chip removal efficiency. The vertically arranged nozzles of different diameters further enhance the chip removal effect. The nozzles, with their varying diameters, can spray appropriate amounts of coolant to maintain the cutting temperature of the milling cutter body during machining at different depths. The protruding design at the bottom of the stepped section of the cutting body allows for multiple cutting edges, making it suitable for machining parts of various shapes and improving the overall practicality of the milling cutter. The serrated shape formed by the stepped section effectively disperses cutting forces during cutting, ensuring even force distribution on the surface of the milling cutter body and improving its stability during operation, while also preventing vibration. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the connecting seat of this utility model;

[0023] Figure 3 This is a cross-sectional structural diagram of the rod body of this utility model;

[0024] Figure 4 This is a schematic diagram of the cutter head of this utility model;

[0025] Figure 5 This is a side view of the blade head structure of this utility model;

[0026] Figure 6 This is a front-view structural diagram of the blade head of this utility model;

[0027] Figure 7 For the present utility model Figure 6 Enlarged structural diagram at point A;

[0028] Figure 8 This is a top view of the blade of this utility model.

[0029] In the diagram: 1. Milling cutter body; 11. Cutter shank; 111. Shank body; 112. Flow hole; 12. Cutter head; 121. Cutter body; 122. Flow groove; 123. Spray hole; 124. Spiral groove; 2. Connecting seat. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In practical implementation: such as Figures 1-8 As shown, an assembled high-precision internal cooling forming milling cutter structure includes: a milling cutter body 1, with a connecting seat 2 mounted on the machine output end at the top of the milling cutter body 1; the milling cutter body 1 is mainly composed of a cutter shank 11 and a cutter head 12; wherein, the cutter shank 11 includes a rod 111 located in the connecting seat 2, and a flow hole 112 is opened in the middle of the rod 111, the flow hole 112 communicating with the connecting seat 2;

[0032] like Figure 1 - Figure 8 As shown, the cutter head 12 includes a cutter body 121 disposed at the bottom end of the rod body 111. A flow groove 122 is formed on the surface of the cutter body 121, and the flow groove 122 communicates with the flow hole 112. Spray holes 123 are formed on the stepped surface of the cutter body 121, and the number of spray holes 123 is the same as the number of stepped parts of the cutter body 121.

[0033] like Figure 4 As shown, the nozzles 123 are arranged vertically, and the diameter of the multiple nozzles 123 is arranged from small to large from top to bottom; the top nozzle 123 has a circular shape when viewed from the front, and the bottom nozzle 123 has a vertical ellipse shape when viewed from the front; the nozzles 123 are connected to the flow channel 122, and the spray direction of the multiple nozzles 123 is all outward.

[0034] When the milling cutter body 1 is cutting the workpiece, the spray holes 123 arranged vertically with different diameters can spray out an appropriate amount of coolant water by using the nozzle diameters of the spray holes 123 at different positions when the milling cutter body is machining the workpiece at different depths, so as to maintain the temperature of the milling cutter body during machining.

[0035] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the cutting portions on both sides of the cutter body 121 are designed in a stepped manner, with each stepped portion being staggered; the stepped portions of the cutter body 121 are recessed, and the bottom of the stepped portions of the cutter body 121 is protruding.

[0036] When the milling cutter body is running at high speed and in contact with the workpiece, the serration formed by the stepped portion of the cutter body 121 can effectively disperse the cutting force during specific cutting, balance the surface stress of the milling cutter body, thereby improving the stability of the milling cutter body during operation, and avoiding the vibration phenomenon of the milling cutter body. Meanwhile, the protruding arrangement of the stepped portion can also improve the cutting precision of the milling cutter body 1.

[0037] As shown in Figure 8 The two sides of the cutter body 121 are provided with stepped portions, and the included angle of the two stepped portions in plan view is sixty degrees.

[0038] By adjusting the blade angle of the conventional milling cutter body from ninety degrees to sixty degrees, the cutting force can be dispersed, the local stress concentration can be reduced, and the local vibration of the cutter can be reduced, which helps to improve the stability of the milling cutter body 1, especially during high-speed cutting, which can effectively reduce the resonance phenomenon caused by vibration.

[0039] The surface of the cutter body 121 is provided with a spiral groove 124, and the curvature of the spiral groove 124 is consistent with the arrangement curvature of the stepped portion of the cutter body 121. The inner bottom height of the flow-through groove 122 is aligned with the last stepped portion of the jet hole 123, and the plan view shape of the flow-through hole 112 is fan-shaped.

[0040] During the cutting process, the workpiece will generate waste chips, which can be spirally discharged outward through the spiral groove 124. At the same time, by using the outward jet angle, the waste chips can also be washed away from the surface of the milling cutter body 1, improving the cleaning effect of the waste chips.

[0041] The utility model discloses a cutting head 12 is provided with the flow through groove 122, can be in the concrete processing, make the cooling liquid through the flow through groove 122 and spray outward, reach the effect of internal cooling, can effectively prevent the local overheating of cutting head 12, and the surface of the ladder part is provided with a plurality of different size jet orifice 123, can spray cooling liquid to the cutting head 12 and workpiece cooling while, still can utilize the spray angle of outward to the waste chip fast discharge, improve the cleaning effect of waste chip, and through the vertical arrangement and the caliber different jet orifice 123, can when milling cutter body carries out different depth processing to workpiece, utilize the caliber of different position jet orifice 123 to spray the cooling liquid water volume of suitable, keep the temperature of milling cutter body processing, set up the convex design at the ladder part bottom end of cutting body 121 cutting part, can reach the effect of multiple cutting edges, can be applicable to the processing of different shape parts, improve the overall practicality of milling cutter body, utilize the sawtooth of the ladder part of cutting body 121 cutting part, can in the concrete cutting, effectively disperse the cutting force, make the surface stress of milling cutter body balanced, thereby improve the stability of milling cutter body operation, also avoided the vibration phenomenon of milling cutter body.

[0042] Furthermore, it should be understood that although the present specification describes only one independent technical solution for each embodiment, the specification is described only for the sake of clarity, and each embodiment contains only one independent technical solution. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-precision internally-cooled assembled milling cutter structure, characterized in that, Include: The milling cutter body (1), the top end of the milling cutter body (1) is provided with a connecting seat (2) assembled to the machine output end; The milling cutter body (1) is mainly composed of a cutter bar (11) and a cutter head (12); Wherein, the cutter bar (11) includes a rod body (111) located in the connecting seat (2), a flow-through hole (112) is opened in the middle part of the rod body (111), and the flow-through hole (112) is in communication with the connecting seat (2); Wherein, the cutter head (12) includes a cutter body (121) arranged at the bottom end of the rod body (111), a flow-through groove (122) is opened on the surface of the cutter body (121), and the flow-through groove (122) is in communication with the flow-through hole (112).

2. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: The cutting part on both sides of the cutter body (121) is designed in a stepped manner, wherein each step part is arranged in a staggered manner.

3. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: The surface of the step part of the cutter body (121) is provided with a spray hole (123), and the number of the spray hole (123) is consistent with the number of the step part of the cutter body (121).

4. The assembled high-precision inner-cooled forming milling cutter structure according to claim 3, characterized in that: The spray holes (123) are arranged vertically, and the hole diameters of the plurality of spray holes (123) are arranged from small to large from top to bottom.

5. The assembled high-precision inner-cooled forming milling cutter structure according to claim 4, wherein, The plan view shape of the topmost spray hole (123) is circular, and the plan view shape of the bottommost spray hole (123) is vertical ellipse.

6. The assembled high-precision inner-cooled forming milling cutter structure according to claim 5, characterized in that: The spray holes (123) are in communication with the flow-through groove (122), and the spray directions of the plurality of spray holes (123) are all outwardly arranged.

7. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: The step part of the cutter body (121) is designed in a recessed manner, and the bottom end of the step part of the cutter body (121) is arranged in a protruding manner.

8. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: The surface of the cutter body (121) is provided with a spiral groove (124), and the curvature of the spiral groove (124) is consistent with the curvature of the step part of the cutter body (121).

9. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: Both sides of the cutter body (121) are provided with step parts, and the included angle of the two step parts is sixty degrees.

10. The assembled high-precision inner-cooled forming milling cutter structure according to claim 1, characterized in that: The inner bottom height of the flow-through groove (122) is aligned with the spray hole (123) of the last step part, and the plan view shape of the flow-through hole (112) is arranged in a fan shape.

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