Milling cutter positioning frame

Abstract

The utility model belongs to the technical field of milling cutters, and particularly relates to a milling cutter positioning frame, the lower side of a drill chuck is fixedly connected with a fixing ring located on the outer side of a milling cutter body, a shielding unit is arranged in the fixing ring, the shielding unit comprises an annular expansion ring installed in the fixing ring, and the annular expansion ring is of an inflatable hollow structure; an inflation set communicated with the annular expansion ring is assembled on the outer side of the drill chuck, the annular expansion ring is made of latex or butyl rubber, the inflation set comprises an air storage box fixedly connected to the outer side of the drill chuck, the air storage box is communicated with the annular expansion ring through an air guide pipe, and an air pushing plate is installed in the air guide pipe. And an adjusting piece connected with the gas pushing plate is assembled on the gas storage tank. Dust and chippings entering the drill chuck through a gap in the clamping position of the drill chuck when the milling cutter body works can be reduced, and the fault rate of the drill chuck is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of milling cutters, and particularly relates to a milling cutter positioning frame. Background Art

[0002] The milling cutter is used to process planes, steps, grooves, forming surfaces and cut off workpieces on the milling machine. It needs to be installed on a positioning frame when working;

[0003] For example, the Chinese patent with the authorization announcement number CN211889180U discloses a milling cutter positioning frame, which can complete the debugging operation of the processing position by moving the slide on the surface of the transmission rod during the mobile positioning. When replacing the milling cutter, the loosening ring at one end of the drill chuck is used to loosen the fixed end of the milling cutter to quickly complete the separation and facilitate the subsequent assembly operation, and the use effect is good;

[0004] However, when processing some materials such as graphite, ceramics, glass, etc., dust and debris are easily generated. Some of the debris generated during processing may fly into the inside of the drill chuck, causing the drill chuck to get stuck during use. Utility Model Content

[0005] The utility model aims to provide a milling cutter positioning frame, which can reduce the dust and debris entering the inside of the drill chuck through the gap of the drill chuck clamping position when the milling cutter body is working, and reduce the failure rate of the drill chuck.

[0006] The technical solutions adopted in this utility are as follows:

[0007] The milling cutter positioning frame comprises a drill chuck, the lower side of the drill chuck is fixedly connected with a fixing ring located outside the milling cutter body, and a shielding unit is arranged inside the fixing ring.

[0008] Furthermore, the shielding unit comprises an annular expansion ring installed inside the fixing ring, the annular expansion ring is an inflatable hollow structure, and the outer side of the drill chuck is equipped with an inflation group connected to the annular expansion ring.

[0009] Furthermore, the inflation group includes an air storage box fixedly connected to the outside of the drill chuck, the air storage box and the annular expansion ring are connected through an air guide pipe, an air push plate is installed inside the air guide pipe, and the air storage box is equipped with an adjustment part connected to the air push plate.

[0010] Furthermore, the adjusting part includes a return spring and a pull rod, the return spring is installed between the upper end of the air pushing plate and the inner wall of the upper side of the air storage box, the lower end of the pull rod is connected to the air pushing plate, and a slot is provided at the upper end of the air storage box, and the upper end of the pull rod extends to the upper side of the air storage box through the slot of the air storage box.

[0011] Furthermore, the pull rod is made of a flexible material.

[0012] Furthermore, a pull ring is fixedly connected to the upper end of the pull rod, and a positioning button is fixedly connected to the outside of the drill chuck and located on the upper side of the air storage box. When the air push plate is pulled to the upper end inside the air storage box, the pull ring can be sleeved on the outside of the positioning button.

[0013] The technical effects achieved by this utility model are:

[0014] The practical milling cutter positioning frame blocks and shields the space between the milling cutter body and the fixing ring by arranging a shielding unit, which can reduce dust and debris that enter the drill chuck through the gap at the drill chuck clamping position when the milling cutter body is working, thereby reducing the failure rate of the drill chuck. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the structure of the utility model when disassembling and assembling the milling cutter body;

[0017] Figure 3 It is a partially cut-away side view of the utility model;

[0018] Figure 4 It is a cut-away side view of the practical gas storage box.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Drill chuck; 2. Milling cutter body; 3. Fixed ring; 4. Annular expansion ring; 5. Air storage box; 6. Air push plate; 7. Pull rod; 8. Pull ring; 9. Positioning button; 10. Return spring; 11. Air guide tube. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0022] like Figure 1-4 As shown, the milling cutter positioning frame includes a drill chuck 1, the upper end of the milling cutter body 2 is installed inside the drill chuck 1 for clamping, the lower side of the drill chuck 1 is fixedly connected with a fixing ring 3 located outside the milling cutter body 2, and a shielding unit is provided inside the fixing ring 3 for sealing and shielding the space between the milling cutter body 2 and the fixing ring 3, so as to reduce the dust and debris that enter the drill chuck 1 through the gap at the clamping position of the drill chuck 1 when the milling cutter body 2 is working, thereby reducing the failure rate of the drill chuck 1.

[0023] Among them, the shielding unit can be shielding plates of different models, which are compatible with different models of milling cutter bodies 2. Different models of shielding plates can be installed inside the fixing ring 3, and a mounting hole is opened in the middle position of the shielding plate, and the milling cutter body 2 is inserted into the inside of the mounting hole.

[0024] In order to reduce the number of spare parts of the shielding unit and make it applicable to different types of milling cutter bodies 2, the present technical solution selects another structure of the shielding unit, which is specifically as follows: Figure 1-3 As shown, the shielding unit includes an annular expansion ring 4 installed inside the fixing ring 3. The annular expansion ring 4 is an inflatable hollow structure. When the annular expansion ring 4 is inflated, it gradually expands until the annular expansion ring 4 completely fills the gap between the milling cutter body 2 and the fixing ring 3.

[0025] Here, the annular expansion ring 4 may be made of latex or butyl rubber, which has good airtightness and deformation properties.

[0026] In order to inflate the annular expansion ring 4, an inflation group connected to the annular expansion ring 4 is installed on the outer side of the drill chuck 1. The inflation group can be an electric air pump or a mechanical inflation structure. The electric air pump is a mature prior art and will not be described in detail in this technical solution. The mechanical inflation structure can be as follows Figure 3-4 As shown, the inflation group includes an air storage box 5 fixedly connected to the outside of the drill chuck 1, and the lower end of the air storage box 5 is equipped with an air guide pipe 11, and the other end of the air guide pipe 11 is connected to the annular expansion ring 4, so that the air storage box 5 and the annular expansion ring 4 are connected through the air guide pipe 11, and an air push plate 6 is installed inside the air guide pipe 11. When the air push plate 6 moves downward, the gas inside the air storage box 5 can be pushed into the inside of the annular expansion ring 4 through the air guide pipe 11. When the air push plate 6 moves upward, the gas inside the annular expansion ring 4 can be sucked into the inside of the air storage box 5.

[0027] The air storage box 5 is equipped with an adjusting member connected to the air push plate 6. The adjusting member can be a threaded rod installed inside the air storage box 5. When the threaded rod rotates, the air push plate 6 threadedly connected to it can be driven to move by the threaded rod.

[0028] In order to operate the adjusting member more simply, the present technical solution selects another structure of the adjusting member, namely Figure 2-3As shown, the adjusting part includes a return spring 10 and a pull rod 7. The return spring 10 is installed between the upper end of the push plate 6 and the inner wall on the upper side of the air storage box 5. The elastic force of the return spring 10 can make the push plate 6 automatically reset to the lower end inside the air storage box 5, so that the annular expansion ring 4 can automatically expand to block the space inside the fixed ring 3. The lower end of the pull rod 7 is connected to the push plate 6, and a slot is provided at the upper end of the air storage box 5. The upper end of the pull rod 7 extends to the upper side of the air storage box 5 through the slot of the air storage box 5, and is fixedly connected with a pull ring 8, which is used to pull the pull ring 8 or the upper end of the pull rod 7 to drive the push plate 6 to move upward.

[0029] In order to facilitate the user's pulling and adapt to different types of equipment, the material of the pull strip 7 can be flexible materials such as plastic, rubber, fiber, etc., so that the shape of the pull strip 7 can be changed for the user to pull in different directions.

[0030] like Figure 1-2 As shown, a positioning button 9 can also be fixedly connected to the outer side of the drill chuck 1 and located on the upper side of the air storage box 5. When the air pushing plate 6 is pulled to the upper end inside the air storage box 5, the pull ring 8 can be sleeved on the outer side of the positioning button 9 to complete the locking of the air pushing plate 6 on the upper side inside the air storage box 5, so that the annular expansion ring 4 is locked to the contracted state, which facilitates the installation of the milling cutter body 2 inside the drill chuck 1.

[0031] The working principle of the utility model is as follows: the pull ring 8 is pulled upwards, and the pull ring 8 is sleeved on the outside of the positioning button 9, so as to complete the locking of the air push plate 6 on the upper side of the air storage box 5, so that the annular expansion ring 4 is locked to the contracted state;

[0032] Then the milling cutter body 2 is installed inside the drill chuck 1, and the upper part of the air storage box 5 is clamped by the drill chuck 1. After the clamping is completed, the pull ring 8 is taken out from the outer side of the positioning button 9, so that the air pushing plate 6 can be pushed downward under the elastic force of the return spring 10, and the gas inside the air storage box 5 is pushed into the inside of the annular expansion ring 4, so that the annular expansion ring 4 expands, and the space between the milling cutter body 2 and the fixed ring 3 is blocked and shielded, thereby reducing the dust and debris that enter the drill chuck 1 through the gap at the clamping position of the drill chuck 1 when the milling cutter body 2 is working, thereby reducing the failure rate of the drill chuck 1.

[0033] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A milling cutter positioning frame, comprising a drill chuck (1), characterized in that: The lower side of the drill chuck (1) is fixedly connected to a fixing ring (3) located outside the milling cutter body (2), and a shielding unit is provided inside the fixing ring (3); The shielding unit comprises an annular expansion ring (4) installed inside the fixing ring (3); the annular expansion ring (4) is an inflatable hollow structure; and an inflatable group connected to the annular expansion ring (4) is mounted on the outside of the drill chuck (1).

2. A milling cutter positioning frame according to claim 1, characterized in that: The annular expansion ring (4) is made of latex or butyl rubber.

3. A milling cutter positioning frame according to claim 1, characterized in that: The inflation group comprises an air storage box (5) fixedly connected to the outside of the drill chuck (1); the air storage box (5) and the annular expansion ring (4) are connected via an air guide pipe (11); an air push plate (6) is installed inside the air guide pipe (11); and an adjusting member connected to the air push plate (6) is mounted on the air storage box (5).

4. A milling cutter positioning frame according to claim 3, characterized in that: The adjusting member comprises a return spring (10) and a pull rod (7); the return spring (10) is installed between the upper end of the air pushing plate (6) and the inner wall of the upper side of the air storage box (5); the lower end of the pull rod (7) is connected to the air pushing plate (6); a notch is provided at the upper end of the air storage box (5); and the upper end of the pull rod (7) extends to the upper side of the air storage box (5) through the notch of the air storage box (5).

5. A milling cutter positioning frame according to claim 4, characterized in that: The material of the pull strip (7) is a flexible material.

6. A milling cutter positioning frame according to claim 5, characterized in that: A pull ring (8) is fixedly connected to the upper end of the pull rod (7), and a positioning button (9) is fixedly connected to the outer side of the drill chuck (1) and located on the upper side of the air storage box (5). When the air push plate (6) is pulled to the upper end inside the air storage box (5), the pull ring (8) can be sleeved on the outer side of the positioning button (9).

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