Gear milling cutter mounting and fixing structure of gear milling machine

Abstract

A gear milling cutter installing and fixing structure of a gear milling machine comprises a rotating rod, the rotating rod is used for installing a gear milling cutter, a limiting device used for fixing the gear milling cutter is further installed on the rotating rod, a limiting hole is formed in the rotating rod, the limiting device comprises a fixing sleeve, a pressing nut and a limiting pin, the fixing sleeve is installed on the rotating rod, and the pressing nut is installed on the fixing sleeve. The limiting pin is inserted into the limiting hole so as to limit the fixing sleeve, and the pressing nut is screwed on the fixing sleeve. According to the utility model, the compression nut abuts against the gear milling cutter in the circumferential direction, the supporting stability is good, when the gear milling cutter is disassembled, the gear milling cutter can be disassembled as long as the compression nut is unscrewed, and the gear milling cutter is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of gear milling machines, in particular to a gear milling cutter installation and fixing structure of a gear milling machine. Background Art

[0002] Chinese patent document CN210231787U, publication (announcement) date: 2020.04.03, discloses a milling machine with easy-to-disassemble cutting tools disclosed by our company, which discloses the installation structure of the milling cutter barrel. Specifically, a slide groove is provided at the lower end of the outer wall of the rotating rod, and transverse grooves are provided on the left and right sides of the slot of the slide groove. The outer wall of the rotating rod is slidably connected to the milling cutter barrel through the slide groove, and a milling opening is provided on the outer wall of the milling cutter barrel. A threaded hole is provided in the slot of the slide groove, and a second threaded support is threadedly connected in the slot of the threaded hole. A through-threaded hole is provided at the upper end of the outer wall of the second threaded support, and the threaded end of the first threaded support extends to the bottom end of the milling cutter barrel through the through-threaded hole. Its feature is that the milling cutter barrel can be easily disassembled by loosening the first threaded support and the second threaded support. Its disadvantage is that since the second threaded support is subjected to radial force and also supports the milling cutter barrel through point contact with the first threaded support, the installation stability of the milling cutter barrel is poor. In addition, when disassembling and assembling the milling cutter barrel, the first threaded support and the second threaded support must be disassembled or installed respectively, and the disassembly and assembly of the milling cutter barrel is still inconvenient. Utility Model Content

[0003] The technical problem to be solved by the utility model is: to solve the problems existing in the above-mentioned background technology, and to provide a milling tool installation and fixing structure of a milling machine. The milling tool is supported circumferentially by a clamping nut, and has good support stability. When disassembling, the milling tool can be disassembled by simply loosening the clamping nut, and the disassembly and installation of the milling tool is more convenient.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a milling tool installation and fixing structure of a milling machine, including a rotating rod, the rotating rod is used to install the milling tool, and a limiting device for fixing the milling tool is also installed on the rotating rod. A limiting hole is set on the rotating rod, and the limiting device includes a fixing sleeve, a clamping nut and a limiting pin. The fixing sleeve is installed on the rotating rod, and the limiting pin is inserted into the limiting hole to limit the fixing sleeve, and the clamping nut is screwed on the fixing sleeve; in use, the clamping nut is pressed against and fixed to the milling tool.

[0005] The rotating rod is provided with a milling tool installation position, a keyway is axially provided on the milling tool installation position, a flat key is installed in the keyway, and the milling tool is sleeved on the milling tool installation position and cooperates with the flat key to limit the position.

[0006] The fixing sleeve comprises a limiting ring and an extending ring. The extending ring is arranged at one end of the limiting ring. The extending ring is provided with an external thread. The clamping nut is screwed onto the extending ring.

[0007] The limiting ring is radially provided with a through hole, and the fixing sleeve is limited after the limiting pin penetrates the through hole and the limiting hole.

[0008] A limit block is axially arranged on the inner wall of the fixing sleeve, and the limit block is slidably matched with the key slot on the rotating rod.

[0009] The utility model has the following beneficial effects:

[0010] The fixing sleeve of the limit device of the utility model is installed and positioned by the limit pin and the rotating rod, and then the clamping nut on the fixing sleeve is screwed to fix the milling tool by the clamping nut. When disassembling, the clamping nut is loosened and the limit pin is pulled out, and the milling tool can be removed. The clamping nut is pressed against the milling tool in the circumferential direction, and the support stability is good. When disassembling the milling tool, the milling tool can be disassembled by loosening the clamping nut, and the disassembly and installation of the milling tool are more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0013] Figure 2 for Figure 1 Schematic diagram of the AA section structure.

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the rotating rod of the utility model.

[0015] Figure 4 It is a three-dimensional structural schematic diagram of the fixing sleeve of the utility model.

[0016] Figure 5 It is an exploded view of the utility model.

[0017] In the figure:

[0018] Rotating rod 10, gear milling tool mounting position 11, keyway 12, limiting hole 13;

[0019] Gear milling cutter 20;

[0020] Flat key 30;

[0021] The limiting device 40 , the fixing sleeve 41 , the limiting ring 411 , the extending ring 412 , the through hole 413 , the limiting block 414 , the pressing nut 42 , and the limiting pin 43 . DETAILED DESCRIPTION

[0022] like Figure 1-5 As shown, a milling tool installation and fixing structure of a gear milling machine includes a rotating rod 10, the rotating rod 10 is used to install the milling tool 20, and a limiting device 40 for fixing the milling tool 20 is also installed on the rotating rod 10. A limiting hole 13 is set on the rotating rod 10. The limiting device 40 includes a fixing sleeve 41, a clamping nut 42 and a limiting pin 43. The fixing sleeve 41 is installed on the rotating rod 10, and the limiting pin 43 is inserted into the limiting hole 13 to limit the fixing sleeve 41. The clamping nut 42 is screwed on the fixing sleeve 41; in the use state, the clamping nut 42 abuts against and fixes the milling tool 20. The fixing sleeve 41 of the limiting device 40 is installed and positioned with the rotating rod 10 through the limiting pin 43, and then the clamping nut 42 on the fixing sleeve 41 is screwed to fix the milling tool 20 through the clamping nut 42. When disassembling, loosen the clamping nut 42 and pull out the limit pin 43, then the gear milling tool 20 can be removed. The clamping nut 42 circumferentially abuts against the gear milling tool 20, and the support stability is good. When disassembling the gear milling tool 20, just loosen the clamping nut 42 to disassemble the gear milling tool 20, and the disassembly and installation of the gear milling tool 20 is more convenient.

[0023] See also Figure 3 The rotating rod 10 is provided with a gear milling tool installation position 11, a keyway 12 is axially provided on the gear milling tool installation position 11, a flat key 30 is installed in the keyway 12, and the gear milling tool 20 is sleeved on the gear milling tool installation position 11 and cooperates with the flat key 30 to limit the position. By setting the gear milling tool installation position 11, it is convenient to position and install the gear milling tool 20. Specifically, the diameter of the gear milling tool installation position 11 is smaller than the diameter of the rotating rod 10, so that the connection between the gear milling tool installation position 11 and the rotating rod 10 forms a limiting step.

[0024] See also Figure 4 In one embodiment, the fixing sleeve 41 includes a limiting ring 411 and an extension ring 412. The extension ring 412 is arranged at one end of the limiting ring 411. The extension ring 412 is provided with an external thread, and the clamping nut 42 is screwed onto the extension ring 412. Through the above structure, the positioning of the fixing sleeve 41 and the installation of the clamping nut 42 are achieved. In this embodiment, the fixing sleeve 41 is located between the limiting pin 43 and the gear milling cutter 20, that is, one end of the fixing sleeve 41 abuts against the limiting pin 43, and the other end is installed with the clamping nut 42 through the extension ring 412.

[0025] Further, in another embodiment, a through hole 413 is radially provided on the limiting ring 411, and the limiting pin 43 penetrates the through hole 413 and the limiting hole 13 to limit the fixing sleeve 41. By providing the through hole 413 on the limiting ring 411, and the limiting pin 43 penetrates the through hole 413 and the limiting hole 13 to limit the fixing sleeve 41, when the clamping nut 42 is screwed, the fixing sleeve 41 will not rotate.

[0026] Furthermore, a limit block 414 is axially arranged on the inner wall of the fixed sleeve 41, and the limit block 414 is slidably matched with the key slot 12 on the rotating rod 10. Through the slidable match between the limit block 414 and the key slot 12, when the limit ring 411 is not provided with a through hole 413, the fixed sleeve 41 is limited by the limit block 414 to prevent rotation; when the limit ring 411 is provided with a through hole 413, the limit pin 43 can be prevented from being deformed due to the tightening nut 42 being turned.

[0027] The use process or principle of the utility model is as follows:

[0028] See also Figure 5 When installing the gear milling tool 20, first insert the flat key 30 into the keyway 12, install the gear milling tool 20 on the gear milling tool installation position 11, then screw the clamping nut 42 to get close to the limiting ring 411 of the fixing sleeve 41, put the fixing sleeve 41 on the gear milling tool installation position 11, align the through hole 413 with the limiting hole 13, and insert the limiting pin 43 into the through hole 413 and the limiting hole 13, as shown in FIG. Figure 1 At this time, there is a gap between the clamping nut 42 and the gear milling cutter 20 , and the clamping nut 42 is screwed with a wrench so that the clamping nut 42 clamps the gear milling cutter 20 , thereby completing the installation and fixation of the gear milling cutter 20 .

[0029] When disassembling the gear milling tool 20 , the clamping nut 42 is loosened by a wrench, and then the limiting pin 43 can be pulled out, thereby taking out the fixing sleeve 41 and the gear milling tool 20 .

Claims

1. A gear milling tool mounting and fixing structure for a gear milling machine, comprising a rotating rod (10), the rotating rod (10) being used to mount the gear milling tool (20), the rotating rod (10) being further provided with a limiting device (40) for fixing the gear milling tool (20), characterized in that: The rotating rod (10) is provided with a limiting hole (13), and the limiting device (40) comprises a fixing sleeve (41), a clamping nut (42) and a limiting pin (43). The fixing sleeve (41) is mounted on the rotating rod (10), and the limiting pin (43) is inserted into the limiting hole (13) to limit the fixing sleeve (41). The clamping nut (42) is screwed onto the fixing sleeve (41); in a use state, the clamping nut (42) abuts against and fixes the milling tool (20).

2. The gear milling tool installation and fixing structure of a gear milling machine according to claim 1, characterized in that: The rotating rod (10) is provided with a gear milling tool mounting position (11), a keyway (12) is axially provided on the gear milling tool mounting position (11), a flat key (30) is installed in the keyway (12), and the gear milling tool (20) is sleeved on the gear milling tool mounting position (11) and cooperates with the flat key (30) to limit the position.

3. The gear milling tool installation and fixing structure of a gear milling machine according to claim 1, characterized in that: The fixing sleeve (41) comprises a limiting ring (411) and an extension ring (412); the extension ring (412) is arranged at one end of the limiting ring (411); an external thread is arranged on the extension ring (412); and the clamping nut (42) is screwed onto the extension ring (412).

4. The gear milling tool installation and fixing structure of a gear milling machine according to claim 3, characterized in that: The limiting ring (411) is provided with a through hole (413) in the radial direction, and the limiting pin (43) is inserted into the through hole (413) and the limiting hole (13) to limit the fixing sleeve (41).

5. A gear milling cutter installation and fixing structure for a gear milling machine according to claim 3 or 4, characterized in that: A limit block (414) is axially arranged on the inner wall of the fixed sleeve (41), and the limit block (414) is slidably engaged with the key slot (12) on the rotating rod (10).

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