本文選題：螺旋平面齒輪 + 剃齒加工�。� 參考：《西安工業(yè)大學(xué)》2017年碩士論文

【摘要】：螺旋平面齒輪傳動是由漸開線螺旋小齒輪和螺旋平面齒輪嚙合構(gòu)成的一種新型的空逡逑間交錯軸齒輪傳動。由于螺旋平面齒輪傳動具有重合度大、結(jié)構(gòu)緊湊、較高的傳動比、逡逑噪聲低、小齒輪制造工藝成熟簡單、承載能力強(qiáng)和傳動平穩(wěn)等優(yōu)點(diǎn),因此在不同工程領(lǐng)逡逑域中的應(yīng)用越來越廣泛。本文研宄的螺旋平面齒輪是應(yīng)用于漁線輪內(nèi)部的核心部件,經(jīng)逡逑壓鑄制造而成,由于受模具的加工精度和熱變形的影響,壓鑄制造的螺旋平面齒輪的表逡逑面質(zhì)量不高。因此,本文提出了螺旋平面齒輪的剃齒加工方法,主要的研究內(nèi)容包括以逡逑下幾個方面:逡逑推導(dǎo)了假想的小齒輪刀具的齒面方程,根據(jù)微分幾何與齒輪嚙合原理,創(chuàng)建了螺旋逡逑平面齒輪的范成加工坐標(biāo)系,通過坐標(biāo)變換,求解了螺旋平面齒輪的齒面方程。根據(jù)螺逡逑旋平面齒輪齒根不產(chǎn)生根切和齒頂不變尖的條件,確定了螺旋平面齒輪的最小內(nèi)半徑和逡逑最大外半徑。根據(jù)螺旋平面齒輪和漸開線螺旋小齒輪的齒面方程,通過數(shù)值計(jì)算求解了逡逑齒面上的離散點(diǎn)數(shù)據(jù),將齒面離散點(diǎn)數(shù)據(jù)導(dǎo)入三維CAD軟件中,建立了螺旋平面齒輪逡逑和漸開線螺旋小齒輪的精確的三維幾何模型。逡逑根據(jù)空間交錯軸嚙合原理,提出了螺旋平面齒輪的剃齒加工方法。研宄了螺旋平面逡逑齒輪的剃齒加工原理,建立了螺旋平面齒輪的剃齒加工運(yùn)動學(xué)模型。由漸開線螺旋小齒逡逑的齒面方程,給出了剃齒刀具的齒面方程。創(chuàng)建了螺旋平面齒輪的剃齒加工坐標(biāo)系,逡逑求解了剃齒加工中切削點(diǎn)的相對運(yùn)動速度,推導(dǎo)了剃齒加工螺旋平面齒輪的嚙合方程和逡逑齒面方程。在漸開線螺旋小齒輪的齒面上開槽形成剃齒刀,研宄了剃齒刀容屑槽的開槽逡逑方式,設(shè)計(jì)了剃齒刀容屑槽的結(jié)構(gòu),實(shí)際加工制造出了剃齒刀。逡逑根據(jù)螺旋平面齒輪的剃齒加工原理,利用VERICUT軟件進(jìn)行了螺旋平面齒輪的剃齒加工仿真。設(shè)計(jì)了完整的螺旋平面齒輪剃齒加工仿真流程,利用三維CAD軟件建立了加工仿真的剃齒機(jī)床模型、剃齒刀具模型和齒坯模型,并將其導(dǎo)入到VERICUT軟件中。根據(jù)螺旋平面齒輪的剃齒加工運(yùn)動關(guān)系,計(jì)算了剃齒加工仿真所需的刀位點(diǎn)軌跡,編寫了相應(yīng)的數(shù)控程序,加工仿真得到了螺旋平面齒輪的幾何模型。仿真模型與理論模型相比較,工作齒面的偏差不超過9.8μm。根據(jù)設(shè)計(jì)的軸向開槽的剃齒刀,在CNC數(shù)控加工機(jī)床上進(jìn)行了螺旋平面齒輪的剃齒加工實(shí)驗(yàn)。利用Infinite Focus光學(xué)3D測量儀,測量了壓鑄制造的螺旋平面齒輪和剃齒后的螺旋平面齒輪的表面粗糙度,實(shí)驗(yàn)結(jié)果表明剃齒后螺旋平面齒輪凹面的表面粗糙度降低到0.6311μm,證明了螺旋平面齒輪剃齒加工方法的正確性與可行性。
[Abstract]:Helical plane gear transmission is a new type of gear transmission with interlaced shaft between involute helical pinion gear and helical plane gear which is composed of involute helical pinion gear and helical plane gear. The helical plane gear transmission has the advantages of high coincidence, compact structure, high transmission ratio, low matching noise, mature and simple manufacturing technology of pinion gear, strong bearing capacity and stable transmission, etc. Therefore, the application in different engineering fields is more and more extensive. The helical plane gear studied in this paper is the core component used in the fishing line wheel. It is made by die-casting. Due to the influence of the machining precision and hot deformation of the die, the surface quality of the helical plane gear manufactured by die-casting is not high. Therefore, this paper puts forward the method of shaving helical plane gear. The main research contents include the following aspects: the equation of tooth surface of the hypothetical pinion cutter is deduced according to the principle of differential geometry and gear meshing. The machining coordinate system of spiral knuckle plane gear is established, and the tooth surface equation of helical plane gear is solved by coordinate transformation. The minimum inner radius and maximum outer radius of spiral plane gear are determined according to the condition that the root of spiral plane gear does not produce the root cutting and the top of the tooth is invariant. According to the tooth surface equation of spiral plane gear and involute spiral pinion gear, the discrete point data on tooth surface are solved by numerical calculation, and the discrete point data of tooth surface are imported into 3D CAD software. An accurate three-dimensional geometric model of helical plane gear and involute helical pinion is established. According to the meshing principle of spatial staggered axis, the gear shaving method of helical plane gear is put forward. In this paper, the principle of gear shaving is studied, and the kinematic model of gear shaving is established. Based on the tooth surface equation of involute helical small tooth, the tooth surface equation of gear shaving cutter is given. The shaving coordinate system of helical plane gear is established, and the relative velocity of cutting point in gear shaving is solved, and the meshing equation and the matching tooth surface equation of shaving helical plane gear are derived. A shaving cutter is formed by slotting on the tooth surface of involute spiral pinion gear. The grooving method of shaving cutter is studied, the structure of shaving cutter is designed, and the shaving cutter is manufactured. According to the gear shaving principle of helical plane gear, the gear shaving simulation of helical plane gear is carried out by using VERICUT software. A complete simulation flow of helical planar gear shaving is designed. The machine model of shaving machine, shaving tool model and tooth blank model are established by using 3D CAD software, and they are imported into Vericut software. According to the kinematic relationship of gear shaving, the cutter locus of gear shaving simulation is calculated, the corresponding numerical control program is compiled, and the geometric model of helical plane gear is obtained by machining simulation. Compared with the theoretical model, the deviation of the working tooth surface is not more than 9.8 渭 m. According to the axial slotted shaving cutter, the experiment of shaving helical plane gear was carried out on CNC NC machine tool. Using Infinite focus optical 3D measuring instrument, the surface roughness of spiral plane gear and shaved spiral plane gear made by die casting were measured. The experimental results show that the surface roughness of helical plane gear is reduced to 0.6311 渭 m after shaving, which proves the correctness and feasibility of the machining method of helical plane gear shaving.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG618.1

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