A heavy-duty carbon fiber t-shaped milling cutter with step-by-step cutting force optimization

Abstract

The utility model discloses a heavy -duty carbon fiber T type milling cutter of step cutting force optimization, including base, support rod, support ring, tool bar, tool bit and clamping mechanism, support rod is fixed on the base, and support ring is fixed on the support rod, and with base coaxial arrangement, tool bar is locked in the support ring through clamping mechanism, and tool bit is fixed in the tool bar top, and clamping mechanism sets up on the support ring. The utility model has the beneficial effect that: in the utility model, through setting up clamping mechanism, and then through the linkage rod drive gear movement, through gear drive rack meshing linkage, and promote the movement of the clamping plate, make two clamping plates on the same fixed seat when with tool bar abut, can self -adaptation slip, the synchronous clamping of tool bar and tool body step surface, effectively eliminate the stress concentration phenomenon caused by traditional single point clamping, and through the taper surface structure of synchronous cylinder promotes the synchronous slip of multiple linkage rods, and then make multiple clamping plates can synchronous to the wall of tool bar clamping locking.

Description

Technical Field

[0001] This utility model relates to a T-slot cutter, specifically a heavy-duty carbon fiber T-slot cutter with optimized stepped cutting force, belonging to the technical field of T-slot cutters. Background Technology

[0002] T-slot cutters are tools mounted on milling machines for milling T-shaped grooves and side grooves on workpieces. T-slot cutters are also called T-slot end mills, half-circle end mills, or keyway end mills. They can perfectly machine T-shaped grooves and side grooves and maintain their cutting performance at high temperatures. In the use of T-slot cutters, the material of the T-slot cutter will also change according to the requirements. Carbon fiber has the characteristics of strong wear resistance and is therefore used to make T-slot cutters.

[0003] However, most existing T-slots have various problems. For example, in a wear-resistant carbon fiber T-slot disclosed in announcement number CN220295953U, although the tool holder is fixed by a limiting rod with a fixed structure, in this technical solution and most current T-slots, due to the limitations of processing technology and functional requirements, the tool holder (shank) and the tool body (cutting part) are usually designed with different diameters. This difference results in a stepped concave-convex structure at the connection. The current clamping mechanism can only apply radial pressure to a single cylindrical surface. When the clamping position is in the transition area between the tool holder and the tool body, the contact surface is discontinuous due to the concave-convex structure. The clamping force will form stress concentration at the step, resulting in a decrease in clamping force. During milling, non-uniform clamping will cause the radial runout of the tool to exceed the standard, which will lead to problems such as carbon fiber delamination cutting and tool chatter. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing technologies are too simplistic. Specifically, the purpose of this utility model is to solve the aforementioned shortcomings of existing technologies by proposing a heavy-duty carbon fiber T-slot end mill with optimized step-cutting force.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A heavy-duty carbon fiber T-slot end mill with optimized step-cutting force includes a base, a support rod, a support ring, a cutter shank, a cutter head, and a clamping mechanism. The support rod is fixed on the base, the support ring is fixed on the support rod and coaxially arranged with the base, the cutter shank is locked in the support ring by the clamping mechanism, the cutter head is fixed at the top of the cutter shank, and the clamping mechanism is arranged on the support ring.

[0007] The clamping mechanism includes a fixed base, a card slot, a clamping plate, a linkage rod, a connecting seat, a gear, and a rack. The fixed base, with its U-shaped structure, is fixed on the supporting ring. Two card slots are symmetrically arranged on the upper and lower sides of the fixed base. The clamping plate is slidably engaged in the card slot. The linkage rod is slidably connected at the center of the fixed base. The connecting seat is fixed to one end of the linkage rod. The gear is rotatably connected in the connecting seat. The rack is fixed on the clamping plate, and the gear meshes between the racks of two adjacent clamping plates.

[0008] As a further embodiment of this utility model: the clamping mechanism further includes a synchronizing cylinder and a cylinder. One end of the synchronizing cylinder is slidably connected to the support rod, and the synchronizing cylinder has a conical structure. The end of the linkage rod away from the connecting seat slides against the conical inner wall of the synchronizing cylinder. The fixed part of the cylinder is fixed to the base, and the telescopic part is connected to the axis of the synchronizing cylinder.

[0009] As a further embodiment of this utility model: a positioning plate is coaxially fixed at one end of the linkage rod away from the connecting seat, and a return spring is sleeved on the outside of the linkage rod. One end of the return spring abuts against the positioning plate, and the other end abuts against the fixed seat.

[0010] As a further embodiment of this utility model: the contact end between the linkage rod and the synchronizing cylinder is provided with embedded ball bearings, which are rolled between the linkage rod and the synchronizing cylinder.

[0011] As a further improvement of this utility model: a limiting protrusion is provided on the outer wall of the linkage rod, and the limiting protrusion is slidably engaged with the fixed seat.

[0012] As a further improvement of this utility model, the main cutting edge of the cutter head adopts a stepped tooth pitch distribution of "sparse-dense-sparse".

[0013] The beneficial effects of this utility model are:

[0014] In this invention, a clamping mechanism is set up, which drives the gear to move through the linkage rod. The gear drives the rack to mesh and move, and pushes the clamping plate to move. When the two clamping plates on the same fixed seat come into contact with the tool holder, they can slide adaptively. The synchronous clamping of the tool holder and the stepped surface of the tool body effectively eliminates the stress concentration phenomenon caused by traditional single-point clamping. The conical structure of the synchronous cylinder pushes multiple linkage rods to slide synchronously, so that multiple clamping plates can synchronously clamp and lock the peripheral wall of the tool holder. At the same time, the diameter can be automatically matched. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the synchronous cylinder and its connection structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the support ring connection structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the clamping mechanism of this utility model.

[0019] In the diagram: 1. Base, 2. Support rod, 3. Support ring, 4. Tool bar, 5. Tool head, 6. Clamping mechanism, 61. Fixed seat, 62. Card seat, 63. Clamping plate, 64. Linkage rod, 65. Connecting seat, 66. Gear, 67. Rack, 68. Synchronizing cylinder, 69. Cylinder, 610. Positioning plate, 611. Return spring, 7. Limiting protrusion, 8. Ball bearing. Detailed Implementation

[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. 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. Example 1

[0021] like Figures 1 to 4 As shown, a heavy-duty carbon fiber T-slot end mill with optimized step-cutting force includes a base 1, a support rod 2, a support ring 3, a cutter shank 4, a cutter head 5, and a clamping mechanism 6. The support rod 2 is fixed on the base 1, the support ring 3 is fixed on the support rod 2 and coaxially arranged with the base 1, the cutter shank 4 is locked in the support ring 3 by the clamping mechanism 6, the cutter head 5 is fixed on the top of the cutter shank 4, and the clamping mechanism 6 is arranged on the support ring 3.

[0022] The clamping mechanism 6 includes a fixed base 61, a card holder 62, a clamping plate 63, a linkage rod 64, a connecting seat 65, a gear 66, and a rack 67. The fixed base 61 with a U-shaped structure is fixed on the supporting ring 3. Two card holders 62 are symmetrically arranged on the upper and lower sides of the fixed base 61. The clamping plate 63 is slidably engaged in the card holder 62. The linkage rod 64 is slidably connected at the center of the fixed base 61. The connecting seat 65 is fixed to one end of the linkage rod 64. The gear 66 is rotatably connected in the connecting seat 65. The rack 67 is fixed on the clamping plate 63, and the gear 66 meshes between the racks 67 of the two adjacent clamping plates 63.

[0023] The clamping mechanism 6 also includes a synchronizing cylinder 68 and a cylinder 69. One end of the synchronizing cylinder 68 is slidably connected to the support rod 2, and the synchronizing cylinder 68 has a conical structure. The end of the linkage rod 64 away from the connecting seat 65 slides against the conical inner wall of the synchronizing cylinder 68. The fixed part of the cylinder 69 is fixed to the base 1, and the telescopic part is connected to the axis of the synchronizing cylinder 68.

[0024] In this utility model, by setting a clamping mechanism 6, the linkage rod 64 drives the gear 66 to move, the gear 66 drives the rack 67 to mesh and move, and pushes the clamping plate 63 to move. When the two clamping plates 63 on the same fixed seat 61 abut against the tool bar 4, they can slide adaptively, and synchronously clamp the tool bar 4 and the stepped surface of the tool body. This effectively eliminates the stress concentration phenomenon caused by traditional single-point clamping. Furthermore, the conical structure of the synchronous cylinder 68 pushes multiple linkage rods 64 to slide synchronously, so that multiple clamping plates 63 can synchronously clamp and lock the peripheral wall of the tool bar 4, and also achieve an automatic diameter matching effect. Example 2

[0025] like Figures 1 to 4 As shown, in addition to all the technical features included in Embodiment 1, this embodiment also includes:

[0026] A positioning plate 610 is coaxially fixed to one end of the linkage rod 64 away from the connecting seat 65, and a return spring 611 is sleeved on the outside of the linkage rod 64. One end of the return spring 611 abuts against the positioning plate 610 and the other end abuts against the fixed seat 61. The linkage rod 64 can be quickly reset by the elastic force of the return spring 611.

[0027] The contact end of the linkage rod 64 and the synchronizing cylinder 68 is embedded with a ball bearing 8. The ball bearing 8 is rolled between the linkage rod 64 and the synchronizing cylinder 68, and the rolling of the ball bearing 8 reduces the frictional resistance between the linkage rod 64 and the synchronizing cylinder 68.

[0028] The outer wall of the linkage rod 64 is provided with a limiting protrusion 7, which is slidably engaged with the fixed seat 61. The limiting protrusion 7 limits the linkage rod 64 to prevent it from driving the gear 66 to deflect on the fixed seat 61.

[0029] The main cutting edge of the cutter head 5 adopts a stepped tooth pitch distribution of "sparse-dense-sparse". The large tooth pitch in the roughing section reduces the load, while the dense tooth pitch in the finishing section improves the surface quality and optimizes the cutting edge.

[0030] Working principle: When using this T-type milling cutter, first place the cutter bar 4 at the center of the support ring 3, and then drive the synchronous cylinder 68 to move through the cylinder 69. At this time, multiple linkage rods 64 slide under the conical extrusion force of the synchronous cylinder 68, and drive the clamping plate 63 to move until it abuts against the cutter bar 4. When abutting, the gear 66 and rack 67 enable the two clamping plates 63 on the same fixed seat 61 to slide adaptively and clamp the cutter bar 4.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heavy-duty carbon fiber T-shaped end mill with optimized stepped cutting force, comprising a base (1), a support rod (2), a support ring (3), a tool holder (4), a tool head (5), and a clamping mechanism (6), characterized in that, The support rod (2) is fixed on the base (1), the support ring (3) is fixed on the support rod (2) and is coaxial with the base (1), the knife bar (4) is locked in the support ring (3) by the clamping mechanism (6), the knife head (5) is fixed on the top of the knife bar (4), and the clamping mechanism (6) is set on the support ring (3); The clamping mechanism (6) includes a fixed seat (61), a card seat (62), a clamping plate (63), a linkage rod (64), a connecting seat (65), a gear (66), and a rack (67). The fixed seat (61) with an inverted shape is fixed on the supporting ring (3). The two card seats (62) are symmetrically arranged on the upper and lower sides of the fixed seat (61). The clamping plate (63) is slidably engaged in the card seat (62). The linkage rod (64) is slidably connected at the center of the fixed seat (61). The connecting seat (65) is fixed at one end of the linkage rod (64). The gear (66) is rotatably connected in the connecting seat (65). The rack (67) is fixed on the clamping plate (63), and the gear (66) meshes between the racks (67) of the two adjacent clamping plates (63).

2. The heavy-duty carbon fiber T-slot end mill with optimized stepped cutting force according to claim 1, characterized in that: The clamping mechanism (6) further includes a synchronizing cylinder (68) and a cylinder (69). One end of the synchronizing cylinder (68) is slidably connected to the support rod (2), and the synchronizing cylinder (68) has a conical structure. The end of the linkage rod (64) away from the connecting seat (65) slides against the conical inner wall of the synchronizing cylinder (68). The fixed part of the cylinder (69) is fixed on the base (1), and the telescopic part is connected to the axis of the synchronizing cylinder (68).

3. The heavy-duty carbon fiber T-slot end mill with optimized stepped cutting force according to claim 1, characterized in that: A positioning plate (610) is coaxially fixed at one end of the linkage rod (64) away from the connecting seat (65), and a return spring (611) is sleeved on the outside of the linkage rod (64). One end of the return spring (611) abuts against the positioning plate (610), and the other end abuts against the fixed seat (61).

4. A heavy-duty carbon fiber T-slot end mill with optimized stepped cutting force according to claim 2, characterized in that: The connecting end of the linkage rod (64) and the synchronizing cylinder (68) is embedded with a ball bearing (8), which is rolled between the linkage rod (64) and the synchronizing cylinder (68).

5. A heavy-duty carbon fiber T-slot end mill with optimized stepped cutting force according to claim 1, characterized in that: The outer wall of the linkage rod (64) is provided with a limiting protrusion (7), and the limiting protrusion (7) is slidably engaged with the fixed seat (61).

6. A heavy-duty carbon fiber T-slot end mill with optimized stepped cutting force according to claim 1, characterized in that: The main cutting edge of the cutter head (5) adopts a stepped tooth pitch distribution of "sparse-dense-sparse".

Images