Multi-station composite valve hexagonal milling cutter

Abstract

The utility model discloses a multi-station composite valve hexagonal milling cutter which comprises a cutter handle body and is characterized in that a drilling reamer, a chamfering cutter and a hexagonal milling cutter are arranged at the front end of the cutter handle body, the drilling reamer is coaxial with the cutter handle body, the chamfering cutter is fixedly connected to the cutter handle body through a bolt, and the hexagonal milling cutter is arranged on the cutter handle body. The hexagonal milling cutter is composed of a hexagonal milling cutter head and a cutter bar shaft which are fixedly connected, the cutter bar shaft is rotationally connected to a cutter handle body through a first bearing, meanwhile, the tail end of the cutter bar shaft is in key connection with a gear, the cutter handle body is connected to a main shaft, and the main shaft is rotationally connected into a main shaft shell through a second bearing. The end face of the spindle shell is fixedly connected with an inner gear ring through a bolt, the gear is meshed with the inner gear ring, the section of the hexagonal milling cutter head is in a regular hexagon shape, and three blade parts evenly distributed in the circumferential direction are further arranged on the outer wall of the hexagonal milling cutter head.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining, especially a multi-station composite valve hexagonal milling cutter. BACKGROUND

[0002] When machining certain valve workpieces (such as the valve shown in the figure), the workpiece has a through hole in the center and a protruding outer hexagon at the end, and the edge of the outer hexagon needs to be chamfered. Figure 1 The traditional machining method for such workpieces is to perform machining operations in multiple steps, i.e., first drilling, then using a milling cutter to mill an outer hexagonal end at the end after the drill is withdrawn, and finally using a chamfering tool to chamfer the edge of the outer hexagon.

[0003] Therefore, a method or device is needed to solve the above problems. SUMMARY

[0004] The utility model discloses in order to solve the above insufficient of prior art, propose a simple structure, clever design, layout is reasonable, can complete drilling, milling outer hexagon and chamfering multiple machining operations in one operation multi-station composite valve hexagonal milling cutter.

[0005] The technical solution of the utility model is as follows: a multi-station composite valve hexagonal milling cutter, comprising a handle body 1, characterized in that: the front end of the handle body 1 is provided with a drill 2, a chamfering tool 3 and a hexagonal milling cutter 4, wherein the drill 2 is coaxial with the handle body 1, the chamfering tool 3 is fixedly connected on the handle body 1 through bolts, the hexagonal milling cutter 4 is composed of a hexagonal milling cutter head 5 and a cutter bar shaft 6 fixedly connected, wherein the cutter bar shaft 6 is rotatably connected on the handle body 1 through a first bearing 7, and a gear 8 is also keyed connected on the tail end of the cutter bar shaft 6,

[0006] The handle body 1 is connected on a main shaft 9, the main shaft 9 is rotatably connected in a main shaft shell 11 through a second bearing 10, an inner ring gear 12 is fixedly connected on the end face of the main shaft shell 11 through bolts, the gear 8 and the inner ring gear 12 are meshed with each other,

[0007] The section of the hexagonal milling cutter head 5 is a regular hexagon, and three blade parts 13 are also arranged on the outer wall in the circumferential direction.

[0008] The reduction ratio between the gear 8 and the inner ring gear 12 is 1:2.

[0009] Compared with the prior art, the utility model has the following advantages:

[0010] The multi-station composite valve hexagonal milling cutter has the advantages that the three kinds of cutters are organically integrated on the shank, the drill reamer coaxial with the main shaft can rotate along the axis thereof to perform drilling, the chamfering cutter can rotate along a circular track under the driving of the main shaft to perform chamfering, and the hexagonal milling cutter can rotate around the axis and revolve under the driving of the main shaft and the gear inner ring gear transmission pair, so that the outer wall of the bar material is processed into a hexagonal shape, the drilling, hexagonal machining and chamfering can be completed in one machining, the machining process is simple, the manufacturing cost is low, the multi-station composite valve hexagonal milling cutter has multiple advantages, is especially suitable for popularization and application in the field, and has a very broad market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structure schematic view of a valve workpiece to be machined in the embodiment of the utility model.

[0012] Figure 2 is a structure schematic view of the embodiment of the utility model.

[0013] Figure 3 is a structure schematic view of a hexagonal milling cutter head part in the embodiment of the utility model. DETAILED DESCRIPTION

[0014] The specific implementation of the utility model will be described below with reference to the drawings. Figure 1 , Figure 2 , Figure 3 A multi-station composite valve hexagonal milling cutter comprises a shank body 1 as a base, a drill reamer 2, a chamfering cutter 3 and a hexagonal milling cutter 4 are arranged at the front end of the shank body 1, the drill reamer 2 is coaxial with the shank body 1, the chamfering cutter 3 is fixedly connected to the shank body 1 through bolts, the hexagonal milling cutter 4 is composed of a hexagonal milling cutter head 5 and a cutter bar shaft 6, the cutter bar shaft 6 is rotatably connected to the shank body 1 through a first bearing 7, and a gear 8 is also keyed to the tail end of the cutter bar shaft 6,

[0015] the shank body 1 is connected to a main shaft 9, the main shaft 9 is rotatably connected to a main shaft shell 11 through a second bearing 10, an inner ring gear 12 is fixedly connected to the end face of the main shaft shell 11 through bolts, the gear 8 is in mesh with the inner ring gear 12,

[0016] the cross section of the hexagonal milling cutter head 5 is a regular hexagon, and three blade parts 13 are arranged on the outer wall of the hexagonal milling cutter head 5 and are uniformly distributed in the circumferential direction.

[0017] The reduction ratio between the gear and the inner ring gear 12 is 1:2.

[0018] The working process of the multi-station composite valve hexagonal milling cutter is as follows: firstly, the inner ring gear 12 is fixedly connected on the end face of the main shaft shell 11 through bolts and other fasteners, then the shank body 1 is clamped through the main shaft 9, and it is required to ensure that the gear 8 and the teeth on the inner ring gear 12 are engaged with each other;

[0019] The blank 15 to be machined is clamped and fixed by the clamp 14, then the main shaft 9 rotates relative to the main shaft shell 11, drives the shank body 1 to rotate, and the main shaft 9 rotates and feeds at the same time, and the drill reamer 2 drills holes on the blank 15;

[0020] After feeding to a certain extent, the hexagonal milling cutter head 5 begins to contact the outer wall of the blank 15, since the shank body 1 rotates along the axial direction at the same time, the gear 8 rotates (revolution) together, the gear 8 is engaged with the relatively fixed inner ring gear 12, therefore the gear 8 rotates (revolution) along the axial direction under the action of the inner ring gear 12, that is to say, the hexagonal milling cutter head 5 revolves around the blank 15 while rotating, in the above movement process, the cutting edge part 13 arranged on the hexagonal milling cutter head 5 mills the end part of the blank 15, and finally forms an outer hexagonal shape;

[0021] Continue to feed, the cutting edge of the chamfering cutter 3 contacts the edge of the hexagonal protruding part just machined, and processes a smooth chamfer thereon,

[0022] After reaching the set feed amount, the main shaft 9 retreats, that is, the machining of the workpiece is completed.

[0023] It should be noted that the hexagonal end machined by the tool has a large radius arc side wall (approximating to a plane), and since the purpose of the hexagonal end is only to cooperate with a wrench to tighten or loosen, the flatness requirement of the side wall is not high, therefore the tool can fully meet the machining requirement.

Claims

1. A multi-station complex valve hexagonal milling cutter comprising a shank body (1), characterized in that: The front end of the tool shank body (1) is provided with a drill reamer (2), a chamfering tool (3) and a hexagonal milling cutter (4), wherein the drill reamer (2) is coaxial with the tool shank body (1), the chamfering tool (3) is fixedly connected on the tool shank body (1) by bolts, and the hexagonal milling cutter (4) is composed of a fixedly connected hexagonal milling cutter head (5) and a tool shank shaft (6), wherein the tool shank shaft (6) is rotatably connected on the tool shank body (1) by a first bearing (7), and a gear (8) is also keyed on the tail end of the tool shank shaft (6), The tool shank body (1) is connected on a main shaft (9), the main shaft (9) is rotatably connected in a main shaft shell (11) by a second bearing (10), an inner ring gear (12) is fixedly connected on the end face of the main shaft shell (11) by bolts, and the gear (8) and the inner ring gear (12) are in meshing engagement with each other, The cross section of the hexagonal milling cutter head (5) is a regular hexagon, and three blade parts (13) are uniformly distributed on the outer wall of the hexagonal milling cutter head (5) in the circumferential direction.

2. The multi-station composite valve hexagonal mill cutter according to claim 1, wherein: The reduction ratio between the gear (8) and the inner ring gear (12) is 1:2.

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