摘要:
A pneumatic hammer mechanism is disclosed. The hammer mechanism includes: a flying mass; an impact surface which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston which limits a movement of the flying mass opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; and a drive for periodically moving the hammer piston with a stroke along the impact axis. The following inequality applies for the mass (m2) of the flying mass, a cross-sectional area (A) of the pneumatic chamber, the maximum length (L) of the pneumatic chamber, the stroke (H) of the hammer piston and an impact coefficient (q), if the hammer mechanism has an impact frequency (f) during percussive operation: L κ 2 ( L - H ) κ · κ L - H + ( L κ 2 ( L - H ) κ - 1 ) · 1 - q q N 2 π H ≥ ! m 2 A · p 0 · N 2 f 2 where the parameter N is at least 4, po designates the ambient pressure and κ the isentropic coefficient of gas in the pneumatic chamber.
摘要翻译:公开了一种气动锤机构。 锤击机构包括:飞行块; 撞击表面,其限制飞行质量沿冲击轴线在冲击方向上的运动; 锤击活塞,其限制飞行物体与冲击方向相反的运动; 飞行质量块和锤式活塞之间的气动室; 以及用于沿击球轴线周期性地移动锤式活塞的行程。 以下不等式适用于飞行质量的质量(m2),气动室的横截面积(A),气动室的最大长度(L),锤式活塞的行程(H)和 冲击系数(q),如果锤击机构在冲击操作期间具有冲击频率(f):L&kgr; 2(L-H)&kgr; ·&kgr L-H +(L&Kgr; 2(L-H)&kgr; - 1)·1 - q q N 2&pgr !ㄧ m 2 A·p 0·N 2 f 2其中参数N至少为4,po表示环境压力和kgr; 气动室中气体的等熵系数。
摘要:
A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; a hammer piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and hammer piston; a drive for periodically moving the hammer piston with a stroke along the impact axis, wherein the flying mass is excited to a periodic movement between the impact surface and hammer piston. The stroke is selected as a function of a maximum length of the pneumatic chamber such that the periodic movement of the flying mass on the path between an impact on the impact surface and a minimum approach of the hammer piston intermittently has a velocity of zero.
摘要:
A pneumatic hammer mechanism is disclosed. The hammer mechanism includes: a flying mass; an impact surface which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston which limits a movement of the flying mass opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; and a drive for periodically moving the exciting piston with a stroke along the impact axis. The following inequality applies for the mass (m2) of the flying mass, a cross-sectional area (A) of the pneumatic chamber, the maximum length (L) of the pneumatic chamber, the stroke (H) of the exciting piston and an impact coefficient (q), if the hammer mechanism has an impact frequency (f) during percussive operation: L κ 2 ( L - H ) κ · κ L - H + ( L κ 2 ( L - H ) κ - 1 ) · 1 - q q N 2 π H ≥ ! m 2 A · p 0 · N 2 f 2 where the parameter N is at least 4, po designates the ambient pressure and κ the isentropic coefficient of gas in the pneumatic chamber.
摘要翻译:公开了一种气动锤机构。 锤击机构包括:飞行块; 撞击表面,其限制飞行质量沿冲击轴线在冲击方向上的运动; 一个令人兴奋的活塞,其限制飞行物体与撞击方向相反的运动; 在飞行质量块和激励活塞之间的气动室; 以及用于沿着冲击轴线周期性地沿着冲程移动激发活塞的驱动器。 以下不等式适用于飞行质量的质量(m2),气动室的横截面积(A),气动室的最大长度(L),励磁活塞的行程(H)和 冲击系数(q),如果锤击机构在冲击操作期间具有冲击频率(f):L&kgr; 2(L-H)&kgr; ·&kgr L-H +(L&Kgr; 2(L-H)&kgr; -1)·1-q q N 2&pgr; 悍H≥! m 2 A·p 0·N 2 f 2其中参数N至少为4,po表示环境压力&kgr; 气动室中气体的等熵系数。
摘要:
A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; and a drive for periodically moving the exciting piston with a stroke along the impact axis. The flying mass is excited to a periodic movement between the impact surface and a minimum approach of the exciting piston. A length ratio of the maximum length of the pneumatic chamber to the stroke is selected as less than 1.55.
摘要:
A pneumatic hammer mechanism is disclosed. The hammer mechanism features: a flying mass, which is movable along an impact axis; an impact surface, which limits a movement of the flying mass along the impact axis in the impact direction; an exciting piston, which limits a movement of the flying mass along the impact axis opposite from the impact direction; a pneumatic chamber between the flying mass and exciting piston; a drive for periodically moving the exciting piston with a stroke along the impact axis, wherein the flying mass is excited to a periodic movement between the impact surface and exciting piston. The stroke is selected as a function of a maximum length of the pneumatic chamber such that the periodic movement of the flying mass on the path between an impact on the impact surface and a minimum approach of the exciting piston intermittently has a velocity of zero.
摘要:
The invention relates to a chemically amplified negative photoresist which can be developed in aqueous alkaline media, which contains a radiation-sensitive acid generator and a compound which reduces the solubility of the resist in aqueous alkaline solutions in the presence of acid, and a polyhydroxyl compound of the formula I ##STR1## in which n is an integer between 2 and 6,R is hydrogen, halogen, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkyl, andZ is an n-valent radical which is unsubstituted or substituted by one or more substituents from the group consisting of hydroxyl, halogen and C.sub.1 -C.sub.4 alkoxy, and is selected from the group consisting of:a) aliphatic radicals having 1 to 12 carbon atoms,b) cycloaliphatic radicals having 5 to 20 carbon atoms,c) aromatic radicals having 6 to 20 carbon atoms andd) radicals having 7 to 30 carbon atoms which comprise at least two different structural units selected from aliphatic, cycloaliphatic or aromatic groups. The resists described make it possible to reduce the demands made on the focusing accuracy during imagewise exposure.
摘要:
Positive photoresist compositions comprising, in an organic solvent, at leasta) one alkali-soluble resin,b) one photosensitive quinone diazide,c) one aromatic hydroxy compound of formula I ##STR1## wherein each R is --H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, --OCH.sub.2 C.sub.6 H.sub.5, --OC.sub.6 H.sub.5 or --COOC.sub.1 -C.sub.4 alkyl, and R.sub.1 and R.sub.2 are each independently of the other H, C.sub.1 -C.sub.4 alkyl, --C.sub.6 H.sub.5 or a cycloaliphatic 5- or 6-membered ring, a is an integer from 0 to 4, and m and n are each independently of the other 0, 1 or 2, which compound enhances the photosensitivity and/or the rate of development, and optionallyd) additional customary modifiers,are eminently suitable for making relief structures.
摘要翻译:正性光致抗蚀剂组合物,其在有机溶剂中包含至少一种碱溶性树脂,b)一种光敏醌二叠氮化物,c)一种式I的芳族羟基化合物(*化学结构*)(I),其中每个R是 - H,C 1 -C 4烷基,C 1 -C 4烷氧基,-OCH 2 C 6 H 5,-OC 6 H 5或-COOC 1 -C 4烷基,R 1和R 2各自独立地为H,C 1 -C 4烷基,-C 6 H 5或脂环族五元或六元环, a是0至4的整数,m和n各自独立地为0,1或2,该化合物增强光敏性和/或显影速率,以及任选地d)另外的常规改性剂,特别适用于 做救济结构。
摘要:
Positive-working photoresist compositions containing 23-27%, based on said composition, of at least one compound of formula (I) ##STR1## wherein one of the substituents X is hydrogen or a group of formula II ##STR2## and the other substituents X are a group of formula II; and 6-11%, based on said composition, of at least one polyhydroxy compound of formula III ##STR3## wherein X is a direct bond, --O--, --S--, --SO.sub.2 --, --CO-- or C(R.sub.6 (R.sub.7)--, and R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each independently of the other hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or hydroxy, and R.sub.6 and R.sub.7 are each independently of the other hydrogen, --CH.sub.3 or --CF.sub.3.These compositions have particularly good profile contrast and exhibit insignificant fluctuations in line width.
摘要:
The invention relates to positive working photoresists for producing relief structures of high-temperature resistant polyimide prepolymers, which photoresists can be developed in aqueous-alkaline medium and which contain, in an organic solvent, essentially at leasta) one prepolymer which is convertible into a polyimide,b) one radiation-sensitive quinonediazide compound, and further optional components, said prepolymer being a completely esterified polyamic acid polymer.
摘要:
The invention relates to negative photoresists of the polyimide type essentially containing, in an organic solvent, in each case at least(a) one polyamide-acid or polyamide-acid derivative prepolymer which can be converted into a highly heat-resistant polyimide polymer,(b) a photoinitiator, and, if appropriate, further customary additives which contain, as the photoinitiator, a compound of the formula IR.sup.1 --SO.sub.2 --SO.sub.2 --R.sup.2 I in which R.sup.1 and R.sup.2 are as defined.