A T-type milling cutter for processing the volume key slot on the side wall of a mobile phone housing

Abstract

The utility model relates to the technical field of machining tools, and specifically discloses a T-type milling cutter for machining a volume key slot on a side wall of a mobile phone housing, comprising: a cutter disc, a connecting column is arranged on the upper surface of the cutter disc, a cutter rod is arranged on the top of the connecting column, a locking mechanism is installed between the connecting column and the cutter rod, and the locking mechanism can fix the connecting column and the cutter rod along the forward and reverse directions of the cutter disc axis, the locking mechanism comprises a stud arranged on the top of the connecting column, a screw barrel arranged outside the connecting column, and a screw sleeve sleeved on the outer wall of the cutter rod and matched with the screw barrel, wherein a threaded installation groove matched with the stud is opened at the bottom of the cutter rod, and the utility model can quickly install the cutter disc and the cutter rod through two threaded structures in opposite directions, and no matter whether the cutter disc rotates forward or reversely due to shaking during long-term work, the cutter disc and the cutter rod will become tighter and tighter, thereby improving the installation stability of the cutter disc and the cutter rod.

Description

Technical Field

[0001] The utility model relates to the technical field of machining cutters, in particular to a T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone shell. Background Art

[0002] A milling cutter is a rotary tool with one or more teeth used for milling. Each tooth cuts off the workpiece's excess in sequence and intermittently during operation. Milling cutters are mainly used to process planes, steps, grooves, molding surfaces, and cut off workpieces on milling machines. In this era of highly developed electronic products, high-end smartphones have become the most sought-after hot-selling products on the market, so the requirements for the processing of mobile phone shells are getting higher and higher. Among them, the processing of the volume key groove on the side wall requires the use of a T-type milling cutter.

[0003] At present, in order to facilitate the milling of key slots of different specifications for the volume key on the side wall of the mobile phone case, the cutter disc and the cutter bar of the T-type milling cutter can be disassembled and replaced. However, the current installation method generally uses screws to lock and fix the cutter disc and the cutter bar. When the milling cutter is milling, large vibration will occur. Therefore, after the milling cutter has worked for a long time, the screws between the cutter disc and the cutter bar are prone to loosening due to shaking. For this reason, we propose a T-type milling cutter for processing the volume key slot on the side wall of the mobile phone case. Utility Model Content

[0004] The utility model aims to provide a T-shaped milling cutter for processing a volume key slot on a side wall of a mobile phone housing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a T-shaped milling cutter for processing a volume key slot on the side wall of a mobile phone housing, comprising:

[0006] A cutter disc, wherein a connecting column is provided on the upper surface of the cutter disc, and a cutter rod is provided on the top of the connecting column;

[0007] The locking mechanism is installed between the connecting column and the knife rod, and the locking mechanism can fix the connecting column and the knife rod in both positive and negative directions along the axis of the knife disc.

[0008] Preferably, the locking mechanism includes a stud arranged on the top of the connecting column, a screw barrel arranged outside the connecting column, and a screw sleeve sleeved on the outer wall of the tool rod and matched with the screw barrel, wherein a threaded mounting groove matching with the stud is opened at the bottom of the tool rod.

[0009] Preferably, a limiting ring for blocking the screw sleeve is fixedly connected to the bottom edge of the tool rod.

[0010] Preferably, a sealing ring is provided on the inner wall of the screw sleeve in contact with the cutter rod.

[0011] Preferably, the cutter disc and the connecting column are integrally formed, and a plurality of reinforcing ribs are provided at the contact end between the connecting column and the cutter disc.

[0012] Preferably, a plurality of equally spaced heat dissipation holes are provided on the surface of the cutter disc.

[0013] Preferably, the outer wall of the cutter disc is provided with a plurality of equally spaced cutter heads, and the connection between the cutter heads and the cutter disc is provided with prefabricated fracture marks.

[0014] The utility model has at least the following beneficial effects:

[0015] The locking mechanism is set up, and when the cutter disc and the cutter rod need to be installed, the stud on the top of the connecting column is first screwed into the threaded installation groove at the bottom of the guide rod, and then the reverse screw sleeve is installed on the screw barrel outside the connecting column, and the connecting column and the cutter rod are threadedly installed through two threaded structures in opposite directions. Compared with the prior art that only threadedly connects the cutter disc and the cutter rod through a threaded structure in one direction, the cutter disc will shake during long-term work, which may easily cause the cutter disc and the cutter rod to loosen. Regardless of whether the cutter disc rotates forward or reversely due to shaking during long-term work, the utility model will become tighter and tighter, thereby improving the stability of the threaded connection between the connecting column and the cutter rod on the cutter disc, which can not only avoid the cutter disc and the cutter rod from loosening due to shaking during long-term work and affecting the milling effect, but also improve the safety of the milling cutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a partial cross-sectional view of the utility model;

[0018] Figure 3 This is a sectional view of the split layout of the utility model;

[0019] Figure 4 For this utility model Figure 2 The structure diagram at A is enlarged;

[0020] Figure 5 For this utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0021] In the figure: 1-cutter disc; 101-cutter head; 102-heat dissipation hole; 2-connecting column; 201-reinforcement rib; 3-cutter rod; 301-threaded mounting groove; 302-limiting ring; 4-locking mechanism; 401-stud; 402-screw barrel; 403-screw sleeve; 5-sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , the utility model provides a technical solution:

[0024] Embodiment 1,

[0025] A T-shaped milling cutter for processing a volume key slot on a side wall of a mobile phone housing, comprising:

[0026] The cutter disc 1 has a connecting column 2 on its upper surface, and a cutter bar 3 on its top. Each cutter disc 1 is stamped with an integrally formed connecting column 2 during production. When installing the cutter disc 1 and the cutter bar 3, it is only necessary to install the connecting column 2 and the cutter bar 3.

[0027] The locking mechanism 4 is installed between the connecting column 2 and the knife rod 3. The locking mechanism 4 can fix the connecting column 2 and the knife rod 3 in both positive and negative directions along the axis of the cutter disc 1; the connecting column 2 and the knife rod 3 can be quickly installed through the locking assembly 4, which not only saves installation time but also improves the stability of the installation of the cutter disc 1 and the knife rod 3.

[0028] The locking mechanism 4 includes a stud 401 arranged on the top of the connecting column 2, a screw barrel 402 arranged outside the connecting column 2, and a screw sleeve 403 sleeved on the outer wall of the tool rod 3 and matched with the screw barrel 402, wherein a threaded mounting groove 301 matching with the stud 401 is opened at the bottom of the tool rod 3.

[0029] When the cutter head 1 and the cutter bar 3 need to be installed, it is only necessary to first thread the stud 401 on the top of the connecting column 2 into the threaded installation groove 301 at the bottom of the cutter bar 3, and then reverse the screw sleeve 403 on the outside of the cutter bar 3 so that the screw sleeve 403 is threadedly installed on the screw barrel 402 in the opposite direction relative to the stud 401, so that the connecting column 2 and the cutter bar 3 can be threadedly connected through the threaded structure in two directions. Therefore, when the cutter head 1 is shaken during long-term work, whether it is forward or reverse rotation, the stud 401 and the screw sleeve can be used to connect the connecting column 2 and the cutter bar 3. The cooperation of 403 will make the connecting column 2 and the tool rod 3 tighter and tighter. Compared with the prior art, the cutter disc 1 and the tool rod 3 are threadedly connected in one direction using screws. Not only does it not need to use installation tools such as screwdrivers, saving time, but it can also improve the installation stability of the cutter disc 1 and the tool rod 3. When the cutter disc 1 needs to be disassembled, replaced or maintained, it is only necessary to first rotate the screw sleeve 403 to disengage the screw barrel 402, and then reverse the stud 401 to screw out the threaded installation groove 301 at the bottom of the tool rod 3 to quickly complete the disassembly of the cutter disc 1.

[0030] Among them, a limiting ring 302 for blocking the screw sleeve 403 is fixedly connected to the bottom edge of the tool rod 3; when the screw sleeve 403 is rotated so that it is completely threaded on the outside of the screw barrel 402, the limiting ring 302 can block the screw sleeve 403 to prevent the screw sleeve 403 from detaching from the tool rod 3.

[0031] In addition, a sealing ring 5 is provided on the inner wall where the screw sleeve 403 contacts the tool rod 3; the sealing ring 5 can increase the friction between the screw sleeve 403 and the tool rod 3. When the cutter disc 1 and the tool rod 3 are disassembled, the screw sleeve 403 is rotated to separate from the screw barrel 402. At this time, after the screw sleeve 403 is loosened, the screw sleeve 403 will be suspended on the tool rod 3 through the sealing ring 5, thereby preventing the screw sleeve 403 from sliding freely on the tool rod 3 and affecting the storage of the tool rod 3.

[0032] According to the above embodiment, embodiment 2,

[0033] The cutter disc 1 and the connecting column 2 are integrally formed, and a plurality of reinforcing ribs 201 are provided at the contact end between the connecting column 2 and the cutter disc 1 .

[0034] The outer wall of the cutter disc 1 is provided with a plurality of cutter heads 101 which are distributed at equal intervals, and the connection between the cutter head 101 and the cutter disc 1 is provided with a prefabricated fracture mark.

[0035] The reinforcement ribs 201 provided can improve the stability of the cutter disc 1 and the connecting column 2, thereby improving the stability of the high-speed rotation of the cutter disc 1 during operation. The cutter head 1 will wear out after long-term milling. After reaching a certain degree of friction, the cutter head 101 will break along the prefabricated fracture mark, thereby preventing the cutter head 101 from breaking directly with the cutter disc 1 and causing the entire cutter disc 1 to collapse, thereby improving safety.

[0036] According to the above-mentioned embodiment, embodiment three, a plurality of equally spaced heat dissipation holes 102 are provided on the surface of the cutter disc 1; when the cutter disc 1 rotates at a high speed to perform groove milling, the temperature of the cutter disc 1 increases due to friction. At this time, the heat dissipation of the surface of the cutter disc 1 can be improved by providing the heat dissipation holes 102 on the surface of the cutter disc 1, thereby improving the service life of the cutter disc 1.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A T-type milling cutter for processing a volume key slot on a side wall of a mobile phone housing, comprising: A cutter disc (1), wherein a connecting column (2) is arranged on the upper surface of the cutter disc (1), and a cutter rod (3) is arranged on the top of the connecting column (2); Features: A locking mechanism (4), wherein the locking mechanism (4) is installed between the connecting column (2) and the knife rod (3), and the locking mechanism (4) can fix the connecting column (2) and the knife rod (3) in both positive and negative directions along the axis of the knife disc (1); The locking mechanism (4) comprises a stud (401) arranged at the top of the connecting column (2), a screw barrel (402) arranged outside the connecting column (2), and a screw sleeve (403) sleeved on the outer wall of the knife rod (3) and matched with the screw barrel (402), wherein the bottom of the knife rod (3) is provided with a threaded installation groove (301) matched with the stud (401).

2. A T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone housing according to claim 1, characterized in that: A limiting ring (302) for blocking the screw sleeve (403) is fixedly connected to the bottom edge of the knife rod (3).

3. A T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone housing according to claim 1, characterized in that: A sealing ring (5) is provided on the inner wall of the screw sleeve (403) which contacts the knife rod (3).

4. A T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone housing according to claim 1, characterized in that: The cutter disc (1) and the connecting column (2) are integrally formed, and a plurality of reinforcing ribs (201) are provided at the contact ends of the connecting column (2) and the cutter disc (1).

5. A T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone housing according to claim 1, characterized in that: The surface of the blade disc (1) is provided with a plurality of heat dissipation holes (102) distributed at equal intervals.

6. A T-shaped milling cutter for machining a volume key slot on a side wall of a mobile phone housing according to claim 1, characterized in that: The outer wall of the cutter disc (1) is provided with a plurality of cutter heads (101) distributed at equal intervals, and a prefabricated fracture mark is provided at the connection between the cutter head (101) and the cutter disc (1).

Images