Patent US3651947A successfully refreshed from Google Patents.
EP0437168A2
Expired / Lapsed
EP
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Cutting head for waterjet cutting machine
Assignee: Possis Corp
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Filing: 1990-12-21
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Granted: —
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Expires: 2010-12-21
Abstract
Abstract A cutting head (13) for a water jet cutting machine has a body (37) supporting a holder (62) carrying an orifice element (63) having an orifice (64). The holder (62) has a cone-shaped surface that fits into a cone-shaped recess in the body (37) to align the orifice (64) with the longitudinal axis (35) of the body (37). An annular member (71) surrounds the holder (62) to seal and retain the holder (62) on the body (37). A collet (93) holds a nozzle (87) having a passage (89) on the body (37). The body (37) has a diverging cone-shaped wall (92) cooperating with tapered surfaces of the collet (93) to align the passage (89) of the nozzle (87) with the longitudinal axis (35). An insert (72) is located in a bore (61) in the body (37) between the holder (62) and nozzle (87). The insert (72) has a chamber (78) aligned with the axis (35) and a passage (79) for allowing abrasive material to be introduced into the stream of water flowing through the chamber (78).
Inventors
- 👤 Eric J. Chalmers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:26
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/02; B24C5/04; B05; B05B; B05B15/00; B05B15/14; B05B15/18; Y; Y10; Y10T; Y10T83/00; Y10T83/364
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
232 words
A cutting head for a water jet cutting machine a body (37) with a longitudinal axis (35) extended through a water chamber (38) in the body for receiving water under pressure, an orifice element (63) having an orifice (64) aligned with the axis (35) open to the chamber (38), a holder (62) supporting the orifice element (62), an elongated nozzle (87) having a passage (89) open to the orifice (64) and aligned with the axis (35), a collet (93) for holding the nozzle (87) on the body (37), and a cap (96) holding the collet (93) on the body (37) characterized by the body (37) having a recess with a converging cone-shaped surface (69), the holder (62) having a cone-shaped surface (59) that fits into the recess to align the orifice (64) with the axis (35), an annular member (71) surrounding the holder (62) to seal and retain the holder (62) relative to an inside wall of the body forming the water chamber (38), the body (37) having a cone-shaped diverging wall (92) with an axis aligned with the longitudinal axis (35) of the body (37) and the collet (93) having tapered surface means engageable with the cone-shaped diverging wall (92) to align the passage (89) of the nozzle (87) with the longitudinal axis (35) so that the orifice (64) and passage (89) in the nozzle (87) are located in longitudinal alignment.
Claim 2
Dependent Claim
29 words
The cutting head according to Claim 1 characterized by the cone-shaped surface (69) of the recess and cone-shaped surface (59) of the holder (62) are located in surface engagement.
Claim 3
Dependent Claim
49 words
The cutting head according to Claim 1 or Claim 2 characterized by the annular member (71) comprising a ring (71) of compressible material surrounding the holder (62) and compressed into sealing engagement with the holder (62) and inside wall of the body (37) forming the water inlet chamber (38).
Claim 4
Dependent Claim
42 words
The cutting head according to any preceding claim characterized by the collet (93) having a plurality of fingers (94) having inside surfaces engageable with the nozzle (87) and tapered outside surfaces engageable with the cone-shaped diverging wall (92) of the body (37).
Claim 5
Dependent Claim
66 words
The cutting head according to Claim 4 characterized by the cap (96) having a hole (98) accommodating the nozzle (87), a wall (97) engageable with the collet (93) and means (90, 91) releasably connecting the cap (97) to the body (37) whereby the cap (97) can be removed from the body (37) to release the collet (93) and remove the nozzle (87) from the body (37).
Claim 6
Dependent Claim
73 words
The cutting head according to any preceding claim characterized by the body (37) having an internal chamber (78) between the holder (62) and nozzle (87) aligned with said axis and a passage (79) for accommodating abrasive material open to the internal chamber (78) whereby abrasive material is introduced into the internal chamber (78) for entrainment with the stream of water flowing through said internal chamber into the passage (89) of the nozzle (87).
Claim 7
Dependent Claim
85 words
The cutting head according to any preceding claim characterized by the body (37) having a transverse bore (61) extended across said axis, and an insert (78) located in said bore (61) having a chamber (78) with an insert (72) axis aligned with said longitudinal axis (35) of the body (37) whereby water under pressure flows through said orifice (64), insert chamber (78), and passage (89) of the nozzle (87) along said longitudinal axis (35), and means (82) holding the insert (72) in the bore (61).
Claim 8
Dependent Claim
69 words
The cutting head according to Claim 7 wherein the body (37) has a first passage (79) for accommodating abrasive material open to the bore (61), the insert (72) having a second passage open to the chamber (78) in the insert (72) and the first passage (79) whereby abrasive material is introduced into the insert chamber (78) for entrainment with the stream of water flowing through the insert chamber (78).
Claim 9
Dependent Claim
74 words
The cutting head according to Claim 7 or Claim 8 characterized by the means (82) holding the insert (72) in the bore (61) includes a releasable member (82) mounted on the body (37) and engageable with the insert (72) to fix the position of the insert (72) on the body (37), the member (82) being movable out of engagement with the insert (72) whereby the insert (72) can be removed from the body (37).
Claim 10
Dependent Claim
66 words
The cutting head according to any of the preceding claims including a member (42) having a cylindrical pilot surface (51) and a water inlet passage (44) concentric with the longitudinal axis (35), the body (37) having a cylindrical surface (55) engageable with the pilot surface (51) to align the body (37) on the member (42), and means (41) connecting the body (37) to the member (42).
References Cited (Backward Citations)
No citation records indexed.
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