Combined pre-milling cutter

Abstract

The utility model belongs to the technical field of combined type pre-milling cutters, and discloses a combined type pre-milling cutter which comprises a pre-milling cutter body, a groove is formed in the top end of the pre-milling cutter body, the groove penetrates through the top end and the bottom end of the pre-milling cutter body, a connecting cylinder is movably arranged in the groove of the pre-milling cutter body, and the connecting cylinder is connected with the pre-milling cutter body. A first threaded groove is formed in the bottom end of the connecting cylinder, the connecting cylinder is in threaded connection with a threaded rod through the first threaded groove, a tool base is fixedly connected to the top end of the threaded rod, and a pair of movable grooves are formed in the positions, located at the bottom end of the pre-milling cutter body, of the outer side of the connecting cylinder; and the pair of movable grooves are movably connected with limiting blocks. According to the device, through cooperative use of a movable groove, a limiting block and a limiting piece, the pre-milling cutter can be conveniently replaced, through use of a compression spring, the limiting piece can be conveniently driven to move, and through arrangement of heat dissipation holes, heat of a pre-milling cutter body can be effectively dissipated during machining.

Description

TECHNICAL FIELD

[0001] The utility model belongs to combined pre-milling cutter technical field, more specifically, it is a kind of combined pre-milling cutter. BACKGROUND

[0002] Milling cutter is a rotating tool with one or more teeth used for milling, and each tooth cuts off the excess of workpiece intermittently during work, which is mainly used for processing plane, step, groove, shaped surface and cutting off workpiece on milling machine.

[0003] Most of the pre-milling cutters are integrated with the cutter now, and a cutter can only process workpieces in one specification, so when multiple specifications of single workpiece need to be processed, multiple cutters need to be prepared for use, which is time-consuming and laborious, and a large number of cutters also occupy a large amount of space, which has a certain impact on workpiece processing.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and a combined pre-milling cutter is provided to achieve a more practical purpose. INVENTION CONTENTS

[0005] To solve the above technical problems, the utility model provides a combined pre-milling cutter, which is achieved by the following specific technical means:

[0006] A combined pre-milling cutter, comprising a pre-milling cutter body, a recess is formed in the top end of the pre-milling cutter body, the recess penetrates the top end and the bottom end of the pre-milling cutter body, a connecting barrel is movably arranged in the recess, a first threaded groove is formed in the bottom end of the connecting barrel, a threaded rod is threadedly connected to the connecting barrel through the first threaded groove, a cutter seat is fixedly connected to the top end of the threaded rod, a pair of movable grooves are formed in the outer side of the connecting barrel at the bottom end of the pre-milling cutter body, and a pair of limit blocks are movably connected to the movable grooves.

[0007] Further, a pair of limit pieces are fixedly connected to the adjacent sides of the limit blocks.

[0008] Further, a pair of compression springs are arranged on the two sides of the first threaded groove corresponding to the pair of movable grooves, and the other ends of the pair of compression springs are fixedly connected to the limit pieces.

[0009] Further, a second threaded groove is formed in the adjacent side of the limit piece, and the second threaded groove is matched with the threaded rod.

[0010] Further, a plurality of heat dissipation holes are formed in the outer side of the pre-milling cutter body.

[0011] Further, the connecting barrel is made of aluminum alloy.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] In the utility model, through the cooperation of the movable groove, the limiting block and the limiting sheet, the pre-milling cutter can be conveniently replaced, through the use of the compression spring, the limiting sheet can be conveniently moved, and through the setting of the heat dissipation hole, the heat of the pre-milling cutter body can be effectively dissipated during processing. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall side view schematic diagram of the utility model.

[0015] Figure 2 It is the connecting cylinder side view schematic diagram of the utility model.

[0016] Figure 3 It is the A structure enlarged schematic diagram of the utility model. Figure 2

[0017] Figure 4 It is the connecting cylinder front view schematic diagram of the utility model.

[0018] In the drawing, the corresponding relationship of component name and drawing number is as follows:

[0019] 1, pre-milling cutter body;2, groove;3, connecting cylinder;4, first threaded groove;5, threaded rod;6, cutter seat;7, movable groove;8, limiting block;9, limiting sheet;10, compression spring;11, second threaded groove;12, heat dissipation hole. DETAILED DESCRIPTION

[0020] The embodiment of the utility model is further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0021] Example:

[0022] As shown in the accompanying drawings: Figure 1 to the accompanying drawings: Figure 4 As shown in the accompanying drawings:

[0023] The utility model provides a combined pre-milling cutter, including pre-milling cutter body 1, the top of pre-milling cutter body 1 is provided with groove 2, groove 2 is through the top and bottom of pre-milling cutter body, and the connecting cylinder 3 is movably arranged in the groove 2 of pre-milling cutter body 1, the bottom of connecting cylinder 3 is provided with first threaded groove 4, and the threaded rod 5 is connected with the first threaded groove 4 of connecting cylinder 3 by screwing, the top of threaded rod 5 is fixedly connected with cutter seat 6, a pair of movable grooves 7 are formed on the outside of connecting cylinder 3 at the bottom of pre-milling cutter body, and the pair of movable grooves 7 are movably connected with limiting block 8.

[0024] ​One pair of limit blocks 8 are fixedly connected with a limiting sheet 9 on both sides of the adjacent two sides, and the limiting sheet 9 can effectively drive the limit block 8 to move.

[0025] The first threaded groove is provided with a pair of compression springs 10 on both sides corresponding to the pair of movable grooves 7, and the other end of the pair of compression springs 10 is fixedly connected with the limiting sheet 9, and the compression spring 10 can drive the limit block 8 to reset.

[0026] The limiting sheet 9 is provided with a second threaded groove 11 on the adjacent side, and the second threaded groove 11 is matched with the threaded rod 5.

[0027] The outer side of the pre-milling cutter body 1 is provided with a plurality of heat dissipation holes 12, and the heat dissipation holes 12 can effectively dissipate the heat of the pre-milling cutter body 1 during machining.

[0028] The connecting barrel 3 is made of aluminum alloy material, and the aluminum alloy material is light in quality and durable.

[0029] The working principle of the embodiment is that when the utility model is used, the user selects the appropriate pre-milling cutter body 1 according to the workpiece to be machined, then inserts the connecting barrel 3 into the groove 2, and then installs the pre-milling cutter body 1 on the tool holder 6, so that the threaded rod 5 of the tool holder 6 is aligned with the first threaded groove 4 of the connecting barrel 3 and is threadedly connected, when the threaded rod 5 enters the position of the second threaded rod 5, the threaded rod 5 will push the limiting sheet 9, so that the limiting sheet 9 drives the limit block 8 to move out of the movable groove 7, so that the limit block 8 clamps the pre-milling cutter body 1 and fixes it at the tool holder 6, when the pre-milling cutter is working, the heat dissipation hole 12 can effectively discharge the heat generated during work, when it is necessary to replace the pre-milling cutter body 1 of different sizes, the user rotates and takes out the threaded rod 5 from the first threaded groove 4, the limiting sheet 9 loses the limiting of the threaded rod 5, so that the compression spring 10 drives the limit block 8 to move away from the movable groove 7, so that the pre-milling cutter body 1 can be conveniently taken out and replaced.

[0030] The embodiments of the utility model are given for example and description, and are not exhaustive or limit the utility model to the disclosed forms. Many modifications and changes are obvious to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model so as to design various embodiments with various modifications suitable for specific purposes.

Claims

1. A combined pre-mill, comprising a pre-mill body (1), characterized in that: The top end of the pre-milling cutter body (1) is provided with a groove (2), the groove (2) penetrates the top end and the bottom end of the pre-milling cutter body (1), the pre-milling cutter body (1) is movably provided with a connecting barrel (3) in the groove (2), the bottom end of the connecting barrel (3) is provided with a first threaded groove (4), the connecting barrel (3) is threadedly connected with a threaded rod (5) through the first threaded groove (4), the top end of the threaded rod (5) is fixedly connected with a tool seat (6), the outer side of the connecting barrel (3) is provided with a pair of movable grooves (7) at the bottom end position of the pre-milling cutter body (1), and the pair of movable grooves (7) are movably connected with a limiting block (8).

2. The modular pre-mill as set forth in claim 1, wherein: A pair of the limiting blocks (8) are fixedly connected with a limiting sheet (9) on the adjacent two sides.

3. The modular pre-mill as defined in claim 2, wherein: The first threaded groove (4) is provided with a pair of compression springs (10) on the two sides corresponding to the pair of movable grooves (7), and the other ends of the pair of compression springs (10) are fixedly connected with the limiting sheet (9).

4. The modular pre-mill cutter according to claim 3, wherein: The limiting sheet (9) is provided with a second threaded groove (11) on the adjacent side, and the second threaded groove (11) is matched with the threaded rod (5).

5. The modular pre-mill as defined in claim 1 wherein: The outer side of the pre-milling cutter body (1) is provided with a plurality of heat dissipation holes (12).

6. The modular pre-mill as defined in claim 1 wherein: The connecting barrel (3) is made of aluminum alloy.

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