Four-edge round nose cutter convenient to position and install for numerical control machining

Abstract

The utility model relates to the technical field of numerical control machining, and provides a numerical control machining four-blade round nose knife convenient to position and install, which comprises a knife handle, a knife holder base and a cutting part, the cutting part is fixedly connected to the head of the knife handle, and a limiting groove is formed in the outer wall of the knife handle; a clamping block is slidably connected to the interior of the tool apron, a moving rod is fixedly connected to the outer wall of the clamping block, a spring is fixedly connected to the outer wall of the clamping block, and the other end of the spring is fixedly connected to the inner wall of the tool apron; the outer wall of the moving rod is sleeved with the spring, and the lower surface of the tool apron is fixedly connected with a base. Through the arrangement of the limiting groove and the clamping block, fixation of the limiting groove and the clamping block is firmer after installation, installation is smoother through the arrangement of cutting off one corner on one side, stress at the groove is dispersed to the bottom of the cutter handle through the arrangement of the dent and the cross-shaped base, and the torque resistance of the cutter handle is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of numerical control machining, and in particular relates to a four-edged round nose cutter for numerical control machining which is easy to position and install. Background Art

[0002] The four-edge round nose cutter is a common milling tool that combines the features of an end mill and a flat bottom cutter, with four cutting edges and a rounded tip. This tool design allows it to perform both small radius arc cutting on the edge and flat cutting on the bottom, making it very suitable for machining workpieces with complex curved surfaces and bottom surfaces.

[0003] The authorized patent with known application number: 202123448690.1 discloses a four-edged round nose knife that is easy to position and install for CNC machining: it includes a round nose knife body and an auxiliary component; the auxiliary component is movably connected to the round nose knife body; symmetrically arranged grooves are provided on the surface of the round nose knife body, and the auxiliary component is movably connected in the groove; the auxiliary component consists of an auxiliary plate, a tight part and a clamping block; the tight part is fixed to the bottom of the auxiliary plate, and the clamping block is fixed to the side wall of the auxiliary plate; by setting the auxiliary component, when the round nose knife body is installed, the round nose knife body can be limited to the fixed part by the auxiliary component that is movable on the surface of the round nose knife body, and then as the fixed part rotates, the round nose knife body between the auxiliary components can be clamped, thereby realizing the limiting effect of the round nose knife.

[0004] However, in the implementation of related technologies, it was found that the above technical solution has the following problems: the groove is set too long, resulting in a decrease in the torque resistance of the knife body, and the shape of the groove is trapezoidal, which can easily cause errors after fixing.

[0005] Therefore, a four-edged round nose cutter for numerical control machining that is easy to position and install is proposed to solve the above problems. Utility Model Content

[0006] The utility model provides a four-edged round nose cutter for CNC machining which is easy to position and install, and solves the problem in the related art that the groove is too long, resulting in reduced torque resistance of the cutter body, and the shape of the groove is trapezoidal, which easily causes errors after fixing.

[0007] The technical solution of the utility model is as follows: a four-edged round nose knife for CNC machining that is easy to position and install, comprising: a knife handle, a knife seat base and a cutting portion, wherein the cutting portion is fixedly connected to the head of the knife handle, and a limiting groove is opened on the outer wall of the knife handle;

[0008] The interior of the knife seat is slidably connected to a clamping block, the outer wall of the clamping block is fixedly connected to a moving rod, the outer wall of the clamping block is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the knife seat;

[0009] The spring is sleeved on the outer wall of the moving rod, and the lower surface of the knife seat is fixedly connected with a base.

[0010] Preferably, the clamping block is fitted into the limiting groove, the end of the movable rod is fixedly connected with the limiting block, and the outer wall of the limiting block is fixedly connected with a handle.

[0011] Preferably, a recess is provided at the bottom of the handle, and a cross seat is provided inside the base, and the recess fits with the cross seat.

[0012] Preferably, the bottom of the knife holder is fixedly connected to a base, and a fixing hole is opened inside the base.

[0013] Preferably, the clamping block, limiting block and handle are all hollow.

[0014] Preferably, the clamping block and the limiting groove are both symmetrically arranged.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] By setting the limiting groove and the clamping block, the two are fixed more securely after installation, and the setting of cutting off a corner on one side makes installation smoother. In addition, the setting of the indentation and the cross seat disperses the force at the groove to the bottom of the handle, making it more resistant to torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the knife handle proposed in the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure proposed by the utility model;

[0021] Figure 4 This is a schematic diagram of the cutaway three-dimensional structure of the tool holder proposed in the utility model;

[0022] Figure 5 The utility model proposed Figure 3 Enlarged view of point A.

[0023] In the figure: 1. Tool handle; 2. Cutting part; 3. Limiting groove; 4. Indentation; 5. Tool holder; 6. Moving rod; 7. Spring; 8. Block; 9. Limiting block; 10. Handle; 11. Cross seat; 12. Base; 13. Fixing hole. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Implementation Method

[0026] See also Figure 1 -5, a four-edged round nose cutter for CNC machining that is easy to position and install, comprising: a shank 1, a base 12 of a tool holder 5, and a cutting portion 2, wherein the cutting portion 2 is fixedly connected to the head of the shank 1, and a limiting groove 3 is formed on the outer wall of the shank 1;

[0027] The inside of the knife seat 5 is slidably connected to a clamping block 8, the outer wall of the clamping block 8 is fixedly connected to a moving rod 6, the outer wall of the clamping block 8 is fixedly connected to a spring 7, and the other end of the spring 7 is fixedly connected to the inner wall of the knife seat 5;

[0028] The spring 7 is sleeved on the outer wall of the moving rod 6 , and the lower surface of the knife holder 5 is fixedly connected with the base 12 .

[0029] The technical solution provided by this embodiment is: first, install the base 12 on the milling machine through the fixing hole 13, then insert the milling cutter, rotate it appropriately after insertion, so that it can be correctly installed in the tool holder 5, and when installed, the clamping block 8 will be pushed into the limiting groove 3 under the action of the spring 7, and the indentation 4 at the bottom will be engaged with the cross seat 11. After installation, the operation can be carried out. After the operation is completed, the clamping block 8 is disengaged from the limiting groove 3 through the handle 10, and then the tool handle 1 is pulled out. When resetting, the limiting block 9 can prevent the clamping block 8 from excessively extending and causing it to fall off and be restricted in installation.

[0030] Furthermore, the clamping block 8 is fitted into the limiting groove 3 , the end of the movable rod 6 is fixedly connected to the limiting block 9 , and the outer wall of the limiting block 9 is fixedly connected to the handle 10 .

[0031] Specifically, the handle 10 provides a convenient way for the knife handle 1 to be removed.

[0032] Furthermore, a recess 4 is provided at the bottom of the handle 1 , and a cross seat 11 is provided inside the base 12 , and the recess 4 fits in with the cross seat 11 .

[0033] Specifically, the arrangement of the indentation 4 and the cross seat 11 increases the stress points of the tool handle 1, thereby preventing the tool from breaking due to excessive torque.

[0034] Furthermore, the bottom of the knife holder 5 is fixedly connected to a base 12 , and a fixing hole 13 is formed inside the base 12 .

[0035] Specifically, the base 12 and the fixing holes 13 are provided so that the device can be adapted to more milling machines when installed in the milling machine.

[0036] Furthermore, the clamping block 8, the limiting block 9 and the handle 10 are all hollow.

[0037] Specifically, the hollow setting makes the weight of both lighter and the centrifugal force smaller, thus preventing the block 8 from accidentally falling out.

[0038] Furthermore, the clamping block 8 and the limiting groove 3 are both symmetrically arranged.

[0039] Specifically, the symmetrical setting makes the dynamic balance of the device higher, avoiding weight imbalance during operation, which may lead to unexpected situations and reduced accuracy.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A four-edged round nose cutter for CNC machining that is easy to position and install, comprising: A knife handle (1), a knife seat (5) base (12) and a cutting portion (2), characterized in that the cutting portion (2) is fixedly connected to the head of the knife handle (1), and a limiting groove (3) is provided on the outer wall of the knife handle (1); The knife seat (5) is internally slidably connected to a clamping block (8), the outer wall of the clamping block (8) is fixedly connected to a moving rod (6), the outer wall of the clamping block (8) is fixedly connected to a spring (7), and the other end of the spring (7) is fixedly connected to the inner wall of the knife seat (5); The spring (7) is sleeved on the outer wall of the moving rod (6), and the lower surface of the knife seat (5) is fixedly connected to the base (12).

2. A four-edged round nose cutter for CNC machining that is easy to position and install according to claim 1, characterized in that: The clamping block (8) is fitted into the limiting groove (3); the end of the moving rod (6) is fixedly connected to a limiting block (9); and the outer wall of the limiting block (9) is fixedly connected to a handle (10).

3. The four-edged round nose cutter for CNC machining that is easy to position and install according to claim 1, characterized in that: The bottom of the knife handle (1) is provided with a recess (4), and a cross seat (11) is provided inside the base (12), and the recess (4) is fitted with the cross seat (11).

4. The four-edged round nose cutter for CNC machining that is easy to position and install according to claim 1, characterized in that: The bottom of the knife seat (5) is fixedly connected to a base (12), and a fixing hole (13) is provided inside the base (12).

5. The four-edged round nose cutter for CNC machining that is easy to position and install according to claim 2, characterized in that: The clamping block (8), limiting block (9) and handle (10) are all hollow.

6. The four-edged round nose cutter for CNC machining that is easy to position and install according to claim 1, characterized in that: The clamping block (8) and the limiting groove (3) are both symmetrically arranged.

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