JP2014237185A5

JP2014237185A5 -

Info

Publication number: JP2014237185A5
Application number: JP2013120531A
Authority: JP
Filing date: 2013-06-07
Publication date: 2016-10-13
Anticipated expiration: 2033-06-07

Description

（請求項４）好ましくは、前記切削力算出手段は、前記領域ΔＰ（ｉ，ｉ＋１）による前記切込ベクトルＬ（ｉ）を含み、かつ、前記隣り合う２つの定義点Ｐ（ｉ），Ｐ（ｉ＋１）を結ぶ定義点間ベクトルＢ（ｉ）に直交する平面Ｇ（ｉ）についての２次元切削モデルを適用することにより、前記領域ΔＰ（ｉ，ｉ＋１）による切削力Ｆ_Ｈ（ｉ）を算出する。平面Ｇ（ｉ）についての２次元切削モデルを適用することで、切削力Ｆ_Ｈ（ｉ）を容易に算出できる。 (Claim 4) Preferably, the cutting force calculating means includes the cut vector L (i) by the region ΔP (i, i + 1) and the two adjacent definition points P (i), P By applying a two-dimensional cutting model for the plane G (i) orthogonal to the defined point vector B (i) connecting (i + 1), the cutting force F _H (i) by the region ΔP (i, i + 1) is obtained. calculate. The cutting force F _H (i) can be easily calculated by applying the two-dimensional cutting model for the plane G (i).

（請求項５）好ましくは、前記すくい角算出手段は、前記定義点間ベクトルＢ（ｉ）を算出し、前記平面Ｇ（ｉ）を算出し、前記隣り合う２つの定義点Ｐ（ｉ），Ｐ（ｉ＋１）を含む隣り合う３つ以上の定義点Ｐ（ｋ）に基づいて、前記隣り合う２つの定義点Ｐ（ｉ），Ｐ（ｉ＋１）の中点Ｐｃ（ｉ，ｉ＋１）における刃面法線ベクトルＮ（ｉ）を算出し、前記刃面法線ベクトルＮ（ｉ）を前記平面Ｇ（ｉ）に投影した場合の投影法線ベクトルＮｇ（ｉ）を算出し、前記平面Ｇ（ｉ）において、前記切込ベクトルＬ（ｉ）と前記投影法線ベクトルＮｇ（ｉ）とのなす角度である投影すくい角αｇ（ｉ）を前記すくい角α（ｉ）として算出する。投影すくい角αｇ（ｉ）をすくい角α（ｉ）とみなすことにより、平面Ｇについての２次元切削モデルを適用した場合に、切削力Ｆ_Ｈ（ｉ）を確実に算出できる。 (Claim 5) Preferably, the rake angle calculating means, said calculating a defined point between the vectors B (i), and calculates the plane G (i), the two defining points adjacent P (i), Based on three or more adjacent definition points P (k) including P (i + 1), the blade surface at the midpoint Pc (i, i + 1) of the two adjacent definition points P (i) and P (i + 1) A normal vector N (i) is calculated, a projection normal vector Ng (i) when the blade surface normal vector N (i) is projected onto the plane G (i) is calculated, and the plane G (i ), A projection rake angle αg (i) which is an angle formed by the cut vector L (i) and the projection normal vector Ng (i) is calculated as the rake angle α (i). By regarding the projected rake angle αg (i) as the rake angle α (i), the cutting force F _H (i) can be reliably calculated when the two-dimensional cutting model for the plane G is applied.

Claims

The center axis of the workpiece and the center axis of the machining tool having a plurality of tool blades on the outer periphery are inclined and twisted,
While synchronizing the rotation of the workpiece about the center axis of the workpiece and the rotation of the processing tool about the center axis of the processing tool,
A gear machining simulation device for machining a gear on the workpiece by causing the machining tool to advance straight toward the center axis of the workpiece with respect to the workpiece,
The boundary line between the end surface and the side surface of each tool blade is defined by a plurality of definition points P (k) (where k = 1 to n),
A cutting vector L in which the region ΔP (i, i + 1) moves in the cutting direction at a predetermined time for each region ΔP (i, i + 1) between two adjacent definition points P (i) and P (i + 1). A cutting vector calculation means for calculating (i);
Rake angle calculating means for calculating a rake angle α (i) by the region ΔP (i, i + 1) based on the cut vector L (i);
Cutting force calculating means for calculating a cutting force F _H (i) by the region ΔP (i, i + 1) for each region ΔP (i, i + 1) based on the rake angle α (i);
A gear machining simulation device comprising:

The gear machining simulation device
Based on the cutting force F _H (i) by the respective regions ΔP (i, i + 1) and the cut vector L (i), the torque Tw generated in the workpiece or the torque Tt generated in the processing tool The gear machining simulation device according to claim 1, further comprising torque calculating means for calculating

The cut vector calculation means uses the vector Lc (i) in which the midpoint Pc (i, i + 1) of the two adjacent definition points P (i) and P (i + 1) moves in the cut direction at a predetermined time. The gear machining simulation device according to claim 1 or 2, wherein the gear machining simulation device calculates the cut vector L (i).

The cutting force calculation means includes the cut vector L (i) based on the region ΔP (i, i + 1), and between the definition points connecting the two adjacent definition points P (i) and P (i + 1). The cutting force F _H (i) by the region ΔP (i, i + 1) is calculated by applying a two-dimensional cutting model for a plane G (i) orthogonal to the vector B (i). The gear machining simulation device according to any one of the above.

The rake angle calculating means includes:
Calculates a vector B (i) between the defining points,
Calculating the plane G (i);
Based on three or more adjacent definition points P (k) including the two adjacent definition points P (i) and P (i + 1), the two adjacent definition points P (i) and P (i + 1) Blade surface normal vector N (i) at the midpoint Pc (i, i + 1) of
A projection normal vector Ng (i) when the blade surface normal vector N (i) is projected onto the plane G (i);
In the plane G (i), a projection rake angle αg (i) that is an angle formed by the cut vector L (i) and the projection normal vector Ng (i) is calculated as the rake angle α (i). ,
The gear machining simulation device according to claim 4.

The cutting force calculation means includes
The cutting force F _H (i) is calculated using the cutting amount d1 (i) based on the region ΔP (i, i + 1) calculated based on the shape change of the workpiece in a predetermined time.
The gear machining simulation device according to any one of claims 1 to 5.