Kusarudzwa kwePositive/Negative Focus Munguva yekucheka neLaser

Pakucheka nelaser, sarudzo pakati pe positive defocus (positive focus) uye negative defocus (negative focus) inonyanya kuenderana nerudzi rwechinhu, ukobvu hweplate, uye zvinodiwa pakuita. Pazasi pane gwara rakajeka uye rakajeka rekuita sarudzo.

Nheyo Dzepfungwa

In-focus (zero defocus):Simba ndiro rinonyanya kuunganidzwa, zvichikonzera kuti kerf ive yakatetepa zvakanyanya. Yakakodzera kucheka mapepa matete nemazvo uye nekumhanya kwakanyanya, inonyanya kukosha "kugadziriswa".

Kutarisa zvisina kunaka (kusatarisa zvisina kunaka):Simba racho rinopararira zvakanyanya, zvichiita kuti pave nemusono wakakura wekucheka. Yakakodzera maplate akakora, inowedzera kubviswa kwetsvina uye inodzivirira lenzi, ichinyanya kutarisisa "simba rekupinda uye mhando."

Unofanira kushandisa rini nzira yekucheka inonzi in-focus (zero defocus)?

Mamiriro ezvinhu anoshanda: Kucheka maplate matete (kazhinji pasi pe3 mm), kunyanya mumashandisirwo ane zvinodiwa zvakanyanya pakunyatsorongeka uye kumhanya.

1. Kucheka nemazvo ndiro dzakatetepa:

• Mienzaniso yezvinhu: jira resimbi rakatetepa rekabhoni, jira resimbi risingapisi, brass, jira rearuminiyamu, nezvimwewo.
• Chikonzero: Maplate matete anogadzira tsvina shoma yakanyungudutswa, saka hapana chikonzero chekuibvisa. Kushandisa positive focus kunogona kuwana nzvimbo diki uye simba rakawanda, kuitira kuti ikwanise kuchekwa nekukurumidza uye chikamu chakatsetseka, chakamira.

2. Kunyatsojeka uye mukaha wakamanikana:

• Mienzaniso yekushandisa: zvikamu zvakanyatsonaka, zvikamu zvemagetsi, zvishongo, mapatani asina chinhu, nezvimwewo.
• Chikonzero: Kerf inogadzirwa nekutarisa kwakanaka ndiyo yakamanikana, ine kurasikirwa kushoma kwezvinhu, uye inogona kucheka magadzirirwo akapfava uye makona akapinza kudzivirira kunyunguduka kwakanyanya.

3. Kutsvaga kukurumidza kwekucheka:

• Pakucheka maplate matete, huwandu hwakawanda hwesimba mu positive focus mode hunoreva kuti kumhanya kwekudya kunogona kushandiswa, nokudaro zvichivandudza kushanda zvakanaka kwekugadzira.

Pfupiso:Pakucheka zvinhu zvitete, uye chinangwa chikuru chiri kumhanya, kururama uye mucheto wakamanikana, chinhu chikuru ndechekusarudza kutarisa kwakanaka.

Ndirini paunofanira kucheka ne negative focus (negative defocus)?

Mamiriro ekushandisa: kucheka ndiro yepakati nepakati nekobvu (kazhinji ≥ 3mm), kunyanya kana zvichidikanwa kuti pave nekubuda kwetsvina yakanaka uye mhando yechikamu.

1. Kucheka ndiro:

• Mienzaniso yezvinhu: simbi yekabhoni, simbi isingatsvi, ndiro yearuminiyamu, nezvimwewo pamusoro pe3mm.
• Chikonzero: Maplate akakora anogadzira simbi yakanyungudutswa yakawanda (slag). Coke isina kunaka inopa mukana wakakura, zvichibvumira gasi rekubatsira (senge oxygen kana nitrogen) kuti ribvise slag kubva pasi, zvichidzivirira slag kurembera nekucheka.

2. Unoda chikamu chemhando yepamusoro:

• Chikonzero: Pamapuleti akakora, kana pakashandiswa positive focus, simba rinoiswa pamusoro, izvo zvinoita kuti chikamu chepamusoro chive chakatsetseka uye chikamu chepazasi chive chakakombama. Negative focus inoita kuti kugoverwa kwesimba kuenzane mugwara replate, kuitira kuti pave nenzvimbo yakatsetseka uye yakapfava yekucheka kubva kumusoro kusvika pasi.

3. Dzivirira girazi rinotarisisa:

• Chikonzero: Pakucheka maplate akakora, kunyanya maplate esimbi ane ngura kana zvinhu zvinowanzo pwanyika zvakanyanya, kupatsanurwa kwekutarisa kwakashata kunoita kuti kutarisika kuve mukati me workpiece, izvo zvinowedzera daro kubva pamusoro pe workpiece kuenda kugirazi rinotarisisa uye zvinoderedza kupwanyika kwesimbi. Njodzi yekurova nekukuvadza girazi rinotarisisa rinodhura.

4. Maitiro chaiwo (akadai sekucheka nitrogen nearuminiyamu):

• Chikonzero: Nitrogen inowanzo shandiswa segasi rekubatsira pakucheka alloys dzearuminiyamu. Kuyerera kwemhepo ine simba guru kunodiwa kuti aruminiyamu yakanyungudutswa ipukute. Kerf yakafara inopihwa ne negative coke yakakosha zvikuru pakuyerera uye kubuda kwe nitrogen ine simba guru, uye ndiyo kiyi yekuona kuti kucheka kwacho hakuna maburrs uye kupenya kwepamusoro.

Pfupiso:Pakucheka zvinhu zvakakora uye chinangwa chikuru ndechekuona kuti kucheka, kuderedza tsvina, kuwana mativi akafanana uye kuchengetedza michina, negative coke ndiyo inonyanya kufarirwa.

Chati Yekufamba Kwesarudzo Nekukurumidza

Mazano ari kushanda

1. Huwandu hwakakwana hwe defocus hunoedzwa:Mitemo iri pamusoro apa ndiyo gwara rinowanzo shandiswa. Huwandu hwakakwana hwekubvisa focus yemudziyo wemuchina uye zvinhu zvinofanirwa kutariswa nekuyedza maitiro. Mushandi achaita "slit test" kuti awane maparamita akakodzera nekutarisa mhando yechikamu uye huremu hwekurembera.

2. Kuisa pfungwa dzisina kunaka:huwandu hwekutarisa kusina kunaka kazhinji hausi huwandu hwakagadzika, asi huwandu hune chekuita nekukora kweplate. Nzvimbo yekutanga inowanzo shandiswa i1/4 kusvika 1/3 yeukobvu hwepepa. Semuenzaniso, kucheka 12mm yesimbi yekabhoni, bvunzo inogona kutanga kubva -2mm kusvika -3mm.

3. Zvinhu zvinokosha:Zvinhu zvakasiyana-siyana zvine kunzwisiswa kwakasiyana pakuisa pfungwa pachinhu chimwe chete. Semuenzaniso, simbi isingasvibi inonzwa zvakanyanya pakuisa pfungwa pane simbi yekabhoni.