Double-edge spherical milling cutter with damping function

Abstract

The utility model discloses a double-edged spherical milling cutter with a shock absorption function, which relates to the field of milling cutters and comprises a cutter handle and a cutter head, one end of the cutter handle is connected with the cutter head, the other end of the cutter handle is provided with an annular groove, a connecting seat is slidably sleeved on the outer side of the top end of the cutter handle, ball blocks are slidably connected in the connecting seat at equal intervals, and one side of each ball block is embedded in the annular groove. A connecting seat is arranged on the knife handle, threads are arranged on the outer side of the connecting seat, the connecting seat is in threaded connection with an adjusting cylinder through the threads on the outer side, and the distance between the inner wall of the adjusting cylinder and the outer wall of the connecting seat is gradually increased in a stepped mode from bottom to top. The ball block is tightly embedded into the annular groove of the cutter handle, firm and stable connection is achieved, the stability of the milling cutter in the milling process is enhanced, the milling precision can be improved, and it is guaranteed that a machined workpiece is accurate in size and smooth in surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of milling cutter, especially a double-edge spherical milling cutter with damping function. BACKGROUND

[0002] The spherical milling cutter is a kind of milling cutter with a spherical blade, which is assembled on a milling machine and used for milling various curved surfaces and circular arc grooves. In the milling process of the existing double-edge spherical milling cutter, vibration and impact are easily generated due to the interaction between the cutter and the workpiece. The deficiencies in the damping design of the traditional milling cutter result in that these vibration and impact cannot be effectively absorbed and dispersed, thereby affecting the machining precision and the service life of the cutter.

[0003] Secondly, the connection design between the shank and the connecting seat of the existing double-edge spherical milling cutter is often relatively simple, lacking sufficient stability and reliability. In long-time or high-load milling operations, this connection design is prone to looseness or wear, resulting in a decrease in machining precision and damage to the cutter. SUMMARY

[0004] To make up for the deficiencies of the prior art, the utility model aims to provide a double-edge spherical milling cutter with damping function, which solves the following technical problems: how to effectively absorb and disperse the vibration and impact force in the milling process, and how to realize stable and reliable connection between the shank and the connecting seat.

[0005] To solve the problems of the prior art, the technical scheme of the utility model is as follows:

[0006] A double-edge spherical milling cutter with damping function, comprising a shank and a cutter head, one end of the shank is connected with the cutter head, the other end of the shank is provided with an annular groove, the top end of the shank is slidably sleeved with a connecting seat, a spherical block is slidably connected inside the connecting seat at equal intervals, one side of the spherical block is embedded in the annular groove, a thread is provided on the outside of the connecting seat, the connecting seat is threadedly connected with an adjusting cylinder through the thread on the outside, the distance between the inner wall of the adjusting cylinder and the outer wall of the connecting seat increases step by step from bottom to top, and the other side of the spherical block is in contact with the inner wall of the adjusting cylinder.

[0007] Preferably, the inner wall of the adjusting cylinder is provided with an inclined surface, which can guide the spherical block to move along the inclined surface more smoothly when the adjusting cylinder rotates, thereby realizing fine adjustment of the connection between the shank and the connecting seat.

[0008] Preferably, horizontal surfaces are symmetrically provided on both sides of the bottom of the adjusting cylinder, which provide a stable support surface, facilitating the rotation adjustment of the adjusting cylinder by a wrench or other tools, so that the torque can be more easily applied when the adjusting cylinder is rotated, thereby realizing accurate adjustment of the connection.

[0009] Preferably, the inner cavity of the connecting seat is provided with a pressing piece and a spring, the pressing piece is elastically connected with the top of the inner cavity of the connecting seat through the spring, the top end of the shank is in extrusion contact with the pressing piece, and the pressing piece absorbs and disperses the impact force received by the shank during milling.

[0010] Preferably, the top of the pressing piece is provided with a protrusion, the protrusion is slidably inserted into the spring, and the presence of the protrusion prevents the pressing piece from deviating or being stuck in the spring, thereby guaranteeing the reliability and stability of the damping structure.

[0011] Preferably, a connecting hole is formed in the top of the connecting seat, the connecting seat is allowed to be connected with other components or devices, a threaded hole is formed in one side of the connecting seat and communicates with the connecting hole, and the connecting seat is allowed to be fixedly connected with other components or devices by using a fastener.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The utility model discloses a connecting design between the shank and the connecting seat, i.e. using the stepped inner wall of the adjusting cylinder to guide and extrude the ball block, so that the ball block is tightly embedded in the annular groove of the shank, firm and stable connection is realized, the stability of the milling cutter during milling is enhanced, the milling precision is also improved, and the size accuracy and surface smoothness of the processed workpiece are ensured.

[0014] 2、The damping structure formed by the pressing piece and the spring arranged in the inner cavity of the connecting seat can effectively absorb and disperse the impact force received by the shank during milling, the tool wear and workpiece damage caused by vibration and impact are reduced, the service life of the milling cutter is prolonged, and the processing quality and efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model.

[0016] Figure 2 It is a connecting seat structure schematic view of the utility model.

[0017] Figure 3 It is a connecting seat and adjusting cylinder structure sectional view of the utility model.

[0018] Figure 4 It is a pressing piece structure schematic view of the utility model.

[0019] The drawings show that: 1, shank;2, tool bit;3, annular groove;4, connecting seat;5, ball block;6, adjusting cylinder;7, inclined plane;8, horizontal plane;9, pressing piece;10, spring;11, protrusion;12, connecting hole;13, threaded hole. DETAILED DESCRIPTION

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] A double-edged ball end mill with shock absorption has a shank 1 and a cutter head 2;

[0022] like Figures 1 to 4 As shown, one end of the tool holder 1 is connected to the tool head 2. The double-edged ball tool head 2 is used for milling various curved surfaces, arc grooves and other complex shapes. The other end of the tool holder 1 is provided with an annular groove 3. A connecting seat 4 is slidably sleeved on the outer side of the top of the tool holder 1. Ball blocks 5 are equidistantly connected inside the connecting seat 4. One side of the ball block 5 is embedded in the annular groove 3. The outer side of the connecting seat 4 is provided with threads. The connecting seat 4 is connected to an adjusting cylinder 6 through the outer thread. The distance between the inner wall of the adjusting cylinder 6 and the outer wall of the connecting seat 4 increases stepwise from bottom to top. The other side of the ball block 5 is in contact with the inner wall of the adjusting cylinder 6.

[0023] When it is necessary to connect the tool holder 1 and the connecting seat 4, insert the corresponding end of the tool holder 1 into the inner cavity of the connecting seat 4, and rotate the adjusting cylinder 6 to move it to the outside of the connecting seat 4. As the adjusting cylinder 6 moves, its stepped inner wall will guide and squeeze the ball block 5, making the ball block 5 more tightly embedded in the annular groove 3. In this way, the connection between the tool holder 1 and the connecting seat 4 becomes more firm and stable.

[0024] like Figures 1 to 4 As shown, the inner wall of the adjusting cylinder 6 is provided with an inclined surface 7, which allows the adjusting cylinder 6 to guide the ball block 5 to move along the inclined surface 7 more smoothly during rotation, thereby realizing fine adjustment of the connection between the tool holder 1 and the connecting seat 4.

[0025] like Figures 1 to 4 As shown, horizontal surfaces 8 are symmetrically provided on both sides of the bottom of the adjusting cylinder 6, which facilitates the rotation of the adjusting cylinder 6 using tools such as wrenches.

[0026] like Figures 1 to 4 As shown, the inner cavity of the connecting seat 4 is provided with a pressing plate 9 and a spring 10. The pressing plate 9 is elastically connected to the top of the inner cavity of the connecting seat 4 through the spring 10. The top of the tool holder 1 is pressed and contacted with the pressing plate 9. When the tool holder 1 is subjected to the impact force during the milling process, the pressing plate 9 and the spring 10 can absorb part of the impact force and play a role in shock absorption.

[0027] like Figures 1 to 4 As shown, the top of the extrusion plate 9 is provided with a protrusion 11, which is slidably inserted into the inside of the spring 10, which can ensure that the extrusion plate 9 can move and reset smoothly when subjected to impact force.

[0028] like Figures 1 to 4As shown, the connecting seat 4 is provided with a connecting hole 12 at the top, allowing the connecting seat 4 to be connected with other components or devices, thereby expanding the use function and application range of the milling cutter.

[0029] As shown, the connecting seat 4 is provided with a threaded hole 13 at one side, and the threaded hole 13 is in communication with the connecting hole 12, allowing the connecting seat 4 to be fixedly connected with other components or devices by using fasteners such as screws or bolts. Figures 1 to 4

[0030] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.​

Claims

1. A double-edge ball cutter with damping function, comprising a cutter handle (1) and a cutter head (2), one end of the cutter handle (1) is connected with the cutter head (2), characterized in that, The other end of the tool shank (1) is provided with an annular groove (3), the top end of the tool shank (1) is slidably sleeved with a connecting seat (4), the connecting seat (4) is slidably connected with a ball block (5) at equal intervals, the ball block (5) is embedded in the annular groove (3) on one side, the outer side of the connecting seat (4) is provided with a thread, the connecting seat (4) is threadedly connected with an adjusting cylinder (6) through the outer thread, the inner wall of the adjusting cylinder (6) is steppedly increased from bottom to top between the distance of the outer wall of the connecting seat (4), and the other side of the ball block (5) is in contact with the inner wall of the adjusting cylinder (6).

2. The double-edge ball nose cutter with a shock absorbing function according to claim 1, characterized in that, The inner wall of the adjusting cylinder (6) is provided with an inclined surface (7).

3. The double-edge ball nose cutter with a shock absorbing function according to claim 1, wherein The bottom of the adjusting cylinder (6) is symmetrically provided with a horizontal surface (8).

4. The double-edge ball nose cutter with a shock absorbing function according to claim 1, wherein The inner cavity of the connecting seat (4) is provided with a pressing piece (9) and a spring (10), the pressing piece (9) is elastically connected with the inner cavity of the connecting seat (4) through the spring (10), and the top end of the tool shank (1) is in extrusion contact with the pressing piece (9).

5. The double-end ball nose cutter with a damping function according to claim 4, characterized in that, The top of the pressing piece (9) is provided with a protrusion (11), and the protrusion (11) is slidably inserted into the spring (10).

6. The double-edge ball nose cutter with a shock absorbing function according to claim 1, wherein The top of the connecting seat (4) is provided with a connecting hole (12).

7. The double-end ball nose cutter with a damping function according to claim 6, characterized in that, The side of the connecting seat (4) is provided with a threaded hole (13), and the threaded hole (13) is in communication with the connecting hole (12).

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