Distance-adjustable milling cutter

Abstract

The distance-adjustable milling cutter comprises a drill bit seat, milling cutter flaps, an expansion sleeve seat and an inner expansion block, an inner expansion cavity is formed in the inner side of the expansion sleeve seat, a plurality of expansion lug flaps are arranged on the surface of the expansion sleeve seat, the inner expansion block is connected to the inner side of the inner expansion cavity in a sliding and sleeved mode, a screw sleeve pipe is arranged on the bottom face of the expansion sleeve seat, and an adjusting screw rod matched with the screw sleeve pipe is arranged at the bottom end of the inner expansion block. A plurality of sliding grooves are formed in the bottom face of the drill bit base, and sliding strip rods slidably installed on the inner sides of the sliding grooves are fixedly installed on the top faces of the milling cutter petals. According to the utility model, the inner expansion block enters the inner side of the inner expansion cavity under the screwing-in action of the adjusting screw rod and pushes the expansion lug petals to deform, so that the distance between the milling cutter petals is accurately adjusted, and the distance adjusting function of the milling cutter is realized. The distance adjusting mechanism can flexibly adjust the distance between the milling cutter petals according to different working condition requirements, the adaptability of the milling cutter is enhanced, the frequency of replacing the cutter is reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of milling cutters, in particular to a milling cutter with adjustable distance. Background Art

[0002] In traditional milling processes, milling cutters usually use a fixed-spacing milling cutter flap structure, and the spacing of the milling cutter flaps cannot be flexibly adjusted according to different working conditions. This type of fixed design is suitable for standard working conditions, but when faced with different materials or different processing requirements, it is often necessary to replace milling cutters of different specifications to meet processing requirements. This method not only increases the frequency of tool replacement, but may also lead to a decrease in processing efficiency. In addition, the installation of the milling cutter flap and the tool holder usually relies on rigid fixation, which may be offset due to centrifugal force during rotation. Especially in the case of high-speed rotation, it is easy to cause the milling cutter to be eccentric or detached, affecting the processing accuracy and stability.

[0003] In the prior art, some designs have attempted to adopt different fixing methods or add additional clamping devices to enhance the stability of the milling cutter. However, this type of fixing method may increase the weight or complexity of the tool, and it is still difficult to completely avoid the offset problem caused by centrifugal force when running at high speeds. At the same time, the traditional tool structure lacks the function of adjustable distance and cannot meet the changing processing requirements. Therefore, the prior art still has significant deficiencies in the adjustment of tool spacing, tool stability and tool adaptability. In view of this, research and improvement are carried out on the existing problems, and an adjustable distance milling cutter is provided to solve the current problems. The purpose is to achieve the purpose of solving problems and improving practical value through this technology. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the prior art or related technologies.

[0005] The utility model relates to an adjustable-distance milling cutter, comprising a drill seat, a milling cutter flap, an expansion sleeve seat and an internal expansion block. By rotating the adjusting screw, the internal expansion block enters the inner side of the internal expansion cavity and pushes the expansion ear flap to deform, thereby adjusting the spacing between the various milling cutter flaps and realizing the distance adjustment function of the milling cutter. This design can flexibly adjust the milling cutter flap spacing according to different working conditions, enhance the adaptability of the milling cutter, and improve processing efficiency. In addition, the use of sliding-mounted milling cutter flaps and internal expansion blocks with magnetic properties ensures that the milling cutter flaps fit closely with the surface of the drill seat, avoiding separation due to centrifugal force, thereby improving the stability of the milling cutter and processing safety.

[0006] An adjustable-pitch milling cutter comprises a drill bit holder, a milling cutter flap, an expansion sleeve holder, and an internal expansion block. The expansion sleeve holder has an internal expansion cavity on its inner side, and a plurality of expansion tabs on its surface. The internal expansion block is slidably sleeved within the internal expansion cavity. The bottom surface of the expansion sleeve holder is provided with a screw sleeve, and the bottom end of the internal expansion block is provided with an adjustment screw that matches the screw sleeve. The bottom surface of the drill bit holder has a plurality of slide grooves. The top surface of the milling cutter flap is fixedly mounted with a slide bar that slides within the inner side of the slide groove. The surface of the milling cutter flap is provided with an alloy tool, and the outer side of the expansion tab abuts against the surface of the milling cutter flap. The screwing action of the adjustment screw causes the internal expansion block to enter the inner side of the internal expansion cavity, pushing the expansion tabs to deform, thereby achieving precise adjustment of the spacing between the milling cutter flaps to meet the processing requirements under different working conditions.

[0007] In a preferred embodiment, the present invention can be further configured such that a magnetic member is provided inside the internal expansion block to magnetically attract and maintain the cutter flaps in contact with the expansion sleeve. This magnetic attraction ensures a tight fit between the cutter flaps and the expansion sleeve, effectively preventing separation due to centrifugal forces, enhancing the stability of the milling cutter and improving machining accuracy and safety.

[0008] In a preferred embodiment, the present invention can be further configured such that the grooves on the bottom surface of the drill bit holder are evenly distributed circumferentially and arranged one-to-one with the milling cutter blades, and the grooves are arranged tangentially. The evenly distributed grooves on the circumferential surface improve cutting uniformity, making the milling process smoother and more efficient.

[0009] In a preferred embodiment, the present invention can further be configured such that the outer expansion tab of the expansion sleeve is polygonal and prism-shaped, with each side of the expansion sleeve corresponding to the outer circumference of the milling cutter tab. This polygonal and prism-shaped expansion tab ensures a secure support for the milling cutter tab during milling, enhancing overall durability.

[0010] In a preferred embodiment of the present invention, the inner expansion block can be further configured as follows: the inner expansion block is a conical cylindrical structure, and the diameter of the inner expansion block gradually increases from top to bottom. The conical cylindrical inner expansion block with gradually increasing diameter provides greater support force during the adjustment process, ensuring a stable and smooth distance adjustment process.

[0011] In a preferred example, the present invention can be further configured as follows: the inner expansion block and the screw sleeve are located at the axis of the expansion sleeve seat and the drill bit seat, and the adjusting screw is adapted to the screw sleeve thread.

[0012] The beneficial effects achieved by the utility model are:

[0013] 1. In this utility model, the expansion block enters the inner expansion cavity through the screw advance action, pushing the expansion tabs to deform, achieving precise adjustment of the spacing between the individual milling tabs and realizing the milling cutter pitch adjustment function. This spacing adjustment mechanism can flexibly adjust the milling cutter tab spacing according to different working conditions, enhancing the adaptability of the milling cutter, reducing the frequency of tool changes, and improving processing efficiency.

[0014] 2. This utility model utilizes a sliding cutter flap and a magnetic internal expansion block to ensure a tight fit between the cutter flap and the drill bit holder surface, preventing the cutter flap from detaching due to centrifugal force during rotation. This design enhances the stability of the cutter, effectively preventing it from shifting or falling off due to centrifugal force during milling, and improving machining accuracy and safety. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the milling cutter flap on the bottom surface of the drill bit seat according to one embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the expansion sleeve and the inner expansion block according to one embodiment of the present invention;

[0019] Figure 5 This is a schematic structural diagram of an expansion sleeve and an inner expansion block according to an embodiment of the present invention.

[0020] Reference numerals:

[0021] 100, drill bit holder; 110, slide groove; 200, milling cutter flap; 210, alloy tool; 220, slide bar; 300, expansion sleeve seat; 310, inner expansion cavity; 320, ear expansion flap; 330, screw sleeve; 400, inner expansion block; 410, adjusting screw. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0023] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0024] The following is combined with Figure 1-Figure 5Some embodiments of the present invention provide an adjustable-pitch milling cutter. Example 1

[0025] The present invention provides an adjustable-distance milling cutter, comprising a drill bit holder 100, a milling cutter flap 200, an expansion sleeve holder 300, and an internal expansion block 400. An internal expansion cavity 310 is provided on the inner side of the expansion sleeve holder 300 for accommodating the sliding adjustment of the internal expansion block 400. A plurality of expansion tabs 320 are provided on the outer side of the expansion sleeve holder 300, and can be deformed under the push of the internal expansion block 400, thereby adjusting the spacing between the milling cutter flaps 200. The internal expansion block 400 is slidably mounted on the inner side of the internal expansion cavity 310, and its bottom end is threadedly connected to the screw sleeve 330, and an adjusting screw 410 is provided at its bottom end for screwing in and adjusting. By rotating the adjusting screw 410, the internal expansion block 400 enters the inner side of the internal expansion cavity 310, pushing the expansion tabs 320 to deform, adjusting the spacing between the milling cutter flaps 200, and realizing the distance adjustment function of the milling cutter.

[0026] In this embodiment, the bottom surface of the drill bit holder 100 is equipped with several slots 110, evenly distributed along the circumference, for mounting the milling cutter flaps 200 and ensuring their stability. A slide bar 220 is fixed to the top surface of each milling cutter flap 200, which slides within the slots 110. Several alloy cutting tools 210 are also mounted on its surface. Furthermore, the inner expansion block 400 contains a magnetic material component, which allows the milling cutter flap 200 to conform to the surface of the expansion sleeve 300, enhancing the milling cutter's ability to resist centrifugal forces during rotation and preventing it from dislodging.

[0027] During operation, the depth of the screw 410 is adjusted to gradually insert the internal expansion block 400 into the internal expansion cavity 310. As the internal expansion block 400 enters, it gradually deforms the expansion tabs 320, thereby controlling the spacing between the milling cutter tabs 200. This adjustment mechanism can meet the needs of different working conditions, improving the adaptability and processing efficiency of the milling cutter. Example 2

[0028] In another embodiment, the expansion flaps 320 on the outside of the expansion sleeve 300 are polygonal prisms to ensure stability and alignment of the cutter flap 200 during adjustment. Each expansion flap 320 abuts the outer circumference of the cutter flap 200, providing multi-point support. This prevents the cutter from shaking during high-speed rotation and improves machining accuracy. Furthermore, the gradually increasing conical cylindrical structure on the inner expansion block 400 facilitates smoother adjustment and provides increased support for the expansion flaps 320 during adjustment.

[0029] In this embodiment, the bottom grooves 110 of the drill bit holder 100 are arranged tangentially, further enhancing the stability of the milling cutter lobes 200 during rotation. Furthermore, adjacent grooves 110 and milling cutter lobes 200 are evenly distributed circumferentially, ensuring a uniform distribution of the cutting load, improving milling stability and machining quality. By adjusting the precession of the adjustment screw 410, the spacing between the milling cutter lobes 200 can be precisely controlled to accommodate varying milling requirements.

[0030] Furthermore, to enhance spacing accuracy, the expansion sleeve 300 and expansion tabs 320 are integrally formed, with gaps between adjacent expansion tabs 320 to allow for appropriate elastic deformation during adjustment. This design allows the expansion tabs 320 to deform evenly when pushed by the internal expansion block 400, resulting in more precise adjustment of the spacing between each milling cutter tab 200.

[0031] The working principle and use process of this utility model:

[0032] During the distance adjustment process, a dedicated tool is used to rotate the adjustment screw 410, pushing the internal expansion block 400 gradually into the interior of the internal expansion cavity 310. As the internal expansion block 400 advances, the expansion tabs 320 gradually expand outward, pushing them forward, changing the distance between the milling cutter tabs 200. The depth of the internal expansion block 400 is adjusted according to specific machining requirements until the desired spacing between the milling cutter tabs 200 is achieved. After the distance adjustment is complete, the milling cutter assembly is installed on the milling machine, the machine is started, and the milling operation begins.

[0033] During the milling process, the magnetic material inside the internal expansion block 400 ensures that the milling disc 200 is in close contact with the surface of the drill bit holder 100, preventing the milling disc 200 from separating due to high-speed rotation. The adjustable distance function flexibly adjusts the distance between the milling discs under different working conditions to meet different processing requirements, improving processing efficiency and quality.

[0034] Throughout this specification, terms such as "one embodiment," "some embodiments," or "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative uses of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An adjustable pitch milling cutter, characterized in that: include: The drill bit seat (100), the milling cutter flap (200), the expansion sleeve seat (300) and the inner expansion block (400), the inner side of the expansion sleeve seat (300) is provided with an inner expansion cavity (310) and the surface of the expansion sleeve seat (300) is provided with a plurality of expansion ear flaps (320), the inner expansion block (400) is slidably sleeved on the inner side of the inner expansion cavity (310), the bottom surface of the expansion sleeve seat (300) is provided with a screw sleeve (330), and the bottom of the inner expansion block (400) is provided with a screw sleeve (330). An adjusting screw (410) is provided at the end thereof and is adapted to the screw sleeve (330); a plurality of slide grooves (110) are provided on the bottom surface of the drill bit seat (100); a slide bar (220) is fixedly installed on the top surface of the milling cutter flap (200) and is slidably mounted on the inner side of the slide groove (110); an alloy tool (210) is provided on the surface of the milling cutter flap (200), and the outer side of the bulging ear flap (320) is in contact with the surface of the milling cutter flap (200).

2. The adjustable pitch milling cutter according to claim 1, characterized in that: A magnetic material component is provided on the inner side of the inner expansion block (400), which is used for magnetic attraction of the milling cutter flap (200) to keep the milling cutter flap (200) in contact with the surface of the expansion sleeve seat (300).

3. The adjustable pitch milling cutter according to claim 1, characterized in that: The bottom surface sliding grooves (110) of the drill bit seat (100) are evenly distributed in the circumferential direction and are arranged in a one-to-one correspondence with the milling cutter flaps (200), and the sliding grooves (110) are arranged in a tangential direction.

4. The adjustable pitch milling cutter according to claim 1, characterized in that: The outer expansion ear flap (320) of the expansion sleeve seat (300) is in the shape of a polygonal prism, and each side of the expansion sleeve seat (300) is arranged corresponding to the outer peripheral surface of the milling cutter flap (200).

5. The adjustable pitch milling cutter according to claim 1, characterized in that: The inner expansion block (400) is a conical cylindrical structure, and the diameter of the inner expansion block (400) increases gradually from top to bottom.

6. The adjustable pitch milling cutter according to claim 1, characterized in that: The inner expansion block (400) and the screw sleeve (330) are located at the axis of the expansion sleeve seat (300) and the drill bit seat (100), and the adjusting screw (410) is threadably adapted to the screw sleeve (330).

7. The adjustable pitch milling cutter according to claim 1, characterized in that: The expansion sleeve seat (300) and the ear-expanding flap (320) are an integrally formed structure, and a separation gap is provided between adjacent ear-expanding flaps (320) for deformation and bending of the ear-expanding flaps (320).

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