US2058782A - High speed planing machine with hydraulic ram drive - Google Patents

High speed planing machine with hydraulic ram drive Download PDF

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Publication number
US2058782A
US2058782A US2710A US271035A US2058782A US 2058782 A US2058782 A US 2058782A US 2710 A US2710 A US 2710A US 271035 A US271035 A US 271035A US 2058782 A US2058782 A US 2058782A
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US
United States
Prior art keywords
piston
pump
movement
reversing
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US2710A
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English (en)
Inventor
Feilkas Heinrich
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Individual
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Individual
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Publication date
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Publication of US2058782A publication Critical patent/US2058782A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/027—Driving main working members reciprocating members
    • B23Q5/033—Driving main working members reciprocating members driven essentially by fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D7/00—Planing or slotting machines characterised only by constructional features of particular parts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/504756—Planing with means to relatively infeed cutter and work
    • Y10T409/506232—Reciprocating cutter infeed means
    • Y10T409/506396—Reciprocating cutter horizontally
    • Y10T409/506724—Reciprocating cutter horizontally with fluid-powered means to drive cutter

Definitions

  • This invention relates to a high speed planing machine with hydraulic ram drive by a pump with uniformly variable delivery quantity, which, controlled by a reversing element, acts on a piston arranged in a working cylinder and mounted on the end of a piston rod.
  • the primary object of the invention is to overcome this objection. This is attained in that the reversing element cooperating with a reversing cock controls conduits deliveringto both ends of the working cylinder so that merely by adjusting the reversing cock for roughing only the full piston side, for smoothing for the purpose of increasing the working speed both piston sides and for the accelerated return movement only the oil-set side of the piston can be subjected to pressure, whereas, when the reversing element is in its intermediate 'position, the loading of the piston is interrupted.
  • the reversing element In order to effect the return movement in any working position at the-highest possible constant speed, the reversing element is'connected with the delivery pump by clutch members which, when the reversing element is set for the return movement, adjust the pump for maximum raising.
  • the displacement of the reversing element is effected by an auxiliary pump, the pressure oil of which can be employed for pressure lubrication after the reversal.
  • the reversing element is also directly connected with a shaft effecting the travel of the table, this shaft, when disengaged, enabling a uniform driving of the table.
  • the planing machine consists substantially of a base plate serving as oil container, a ram shiftablymounted on a bed and driven by a power cylinder situated thereunder, a pressure oil pump with reversing valve and the necessary conduits, and a table with feed mechanism for carrying the'work.
  • Fig. 1 shows the hydraulicdrive and the reversin'g device fol-"the piston actuating the ram (oi. air-38) and the drive for the table travel connected therewith.
  • Fig. 2 is a section on line Iii-II of Fig. 1.
  • Figs. 3 to 6 show the reversing valve in section on line IIIIII of Fig. 1, with thecontrolling it member in different positions.
  • Fig. 7 shows in section and on a larger scale the ratchet clutch for intermittently feeding the work table.
  • Fig. 8 is a sectional view showing the other end of the driving shaft of the ratchet clutch with the neighbouring bearing parts equipped with a claw clutch, the claw clutch being completely engaged for'obtaining maximum table feed.
  • Fig. 9' shows the same arrangement as Fig. 8 with half engaged claw'clutch for obtaining smallest table feed.
  • Fig. 10 shows the arrangement of recesses in one of the bearing parts serving for accommodating the clutch teeth, viewed in the direction of the arrow I of Fig. 8.
  • Fig. 11 shows the arrangement of the teeth on the clutch part, viewed in the direction of. the arrow II of Fig. 8.
  • Fig. 12 is a horizontal part section through the control box taken at the height of the axis of I the reversing cook.
  • the planing machine is driven for example by an electric motor 0 which drives a hydraulic pump 2 with oscillatable casing 3.
  • a hydraulic pump 2 With oscillatable casing 3.
  • the casing assumes the horizontal position shown in Fig.'1,'the delivery is zero.
  • the delivering quantity can be uniformly varied up to a maximum.
  • the oil is '35 taken from an oil tank it through a suction pipev 5 supplied from. the-pressure side of the hydraulic pump through a pressure pipe 6 to a reversing element i, from which it is fed through conduits 8 and 9 respectively to the power cylinder id. In this cylinder moves a piston l i which on one side.
  • the reversing valve l3 consists of a housing I with a rotaryfyalve I! mounted therein, in the bore Bar of which valve a shaft I4 is axially shiftable.
  • the pressure conduits 8 and 9 and a discharge conduit 15 extend in the section plane III-III up to the slide valve bore Ila. At this point the valve l3 has two chambers l6 and I1 open towards the bore l3a.
  • a shut off or reversing cock I8 is fitted in the pressure conduit 9 in the housing 1 transversely to the valve l2, said cock enabling the conduit 9 to be brought into communication with a by-pass conduit [9 terminating in the slide valve bore l3a opposite the conduit 8. All channels communicating with the bore I3a are mutually displaced through an angle of 90.
  • the pressure oil is supplied through a channel 20 extending from the pressure conduit 6 and leading to the chamber IS in the valve l2. Diametrically opposite this channel 20 a bypass 2l is arranged in the housing 1, which by-pass leads from the pressure chamber It to the outer end of the housing.
  • is closed by a portion of the reversing cock l8 which is -not hollow, but is opened when the reversing cock is in a predetermined position by means of a bore 22 in this cock, so that the oil can flow off freely from the pressure chamber through this by-pass into the collecting tank 4.
  • the rotary slide valve is adjusted by hydraulic means through the intermediary of a gear driven auxiliary pump 24 driven from the shaft M by gear wheels, drawing oil out of the tank 4 through a suction pipe 25 and forcing it through a pressure pipe 26 into a chamber 21 arranged in a cover 28 placed on one side of the housing I.
  • This cover covers a semi-annular space29 in the housing 1, half filled by a blade 30 fixed on the rotary slide valve.
  • Channels 31 and 32 extend from the chamber 2'! to each end of the semi-annular space 29.
  • a stepped piston valve 33 is mounted in the chamber 21 and adjusted by adjustable abutments influenced by the piston II or the ram through the intermediary of transmission members not shown in the drawings.
  • This stepped piston valve conducts, according to its position, the pressure oil to the one or the other side of the blade 30, so that the rotary slide valve I2 is rotated through an angle of 90 in the one or other direction (Fig. 2).
  • the stroke movement is limited by the blade striking against the housing.
  • the oil delivered by the auxiliary pump 24, does not return, after every rotation of the rotary slide valve, directly into the oil tank, but is forced into tubes 34, 35 serving for lubricating the whole machine, the tubes 35 being, during the reversing movement, alternatively connected with the portion of the semi-annular space 29 actually filled with oil.
  • the table travel is derived from the shaft l4 journalled in the rotary slide valve, said shaft acting on the usual feeding mechanism of the table through the intermediary of a ratchet clutch 30 operating in one direction and of a bevel wheel gearing 31, 38.
  • the ratchet clutch comprises a sleeve 3! slidable in the hollow hub of the toothed wheel 31 and provided at one end with teeth 38' bevelled on one side which engage in the corresponding tooth gaps of a toothed ring 31' inserted and fixed in the hub bore owing to the fact that the sleeve 31 is pressed against the ring I! by the pressure of a spring 34".
  • a clutch member 39 is fitted on the shaft l4 and when the shaft I4 is shiftedfurther to the left, this member is brought into engagement with the axle of one of the wheels of the pump 24 through the intermediary of a suitable gearing.
  • the shaft is uniformly driven when the clutch between it and the rotary valve l2 has been disengaged.
  • the shaft I4 is always shifted the desired distance in longitudinal direction by hand, through the intermediary of an adjusting lever 4
  • a lever 43 is fixed on the end of the rotary slide valve I2 extending through the cover 28, and connected to the housing 3 of the hydraulic gear by a wire rope 44. Consequently,- if the rotary slide valve i2 is rotated in one direction, the lever 43 lifts the housing 3 and adjusts the main pump 2 to maximum delivery.
  • the housing 3 of the main pump can further be adjusted by a toe cam 45 to a certain delivering quantity determining the forward speed.
  • the pressure chamber it, during the forward movement, communicates with the pressure conduit 8 through which the piston face Ilia of the piston i II is loaded, so that the forward movement of the cam is effected.
  • the oil on the rear side of the piston can flow to the discharge pipe it through the conduit 9, reversing cook it, by-pass conduit it and channel ill.
  • the pump with variable. delivery may likewise be of any suitable construction.
  • High-speed planing machine with hydraulic ram drive comprising in combination a working cylinder, a piston reciprocable in said cylinder, 9. piston rod on one side of said piston reducing the operative surface on this side of the piston, a main pump with uniformly variable delivery, a pressure pipe leading from this pump, a control element at the other end of said delivery pipe, a control housing accommodating said control element, said control element rotatable in both directions in said housing, a second pump with constant speed of rotation, a blade servomotor connected with said control element, a pivot control valve between said servo-motor and said control element, said second pump in conjunction with said servo-motor adapted to alternately shift said control element into its two extreme positions through the intermediary of said pivot control valve, by-passes in said housing leading to said control element, a hand operated reversing cock arranged in the control housing and adapted to control said by-passeaa conduit leading from said control element to one end of said working cylinder, and a conduit leading from said reversing
  • coupling members connecting the rotatable selector valve with the portion of the variable main pump adjusting the delivery of the pump, said coupling members adapted to set the main pump for maximum delivery when said selector valve is set for reverse motion.
  • a high-speed planing machine as specified in claim 1, comprising abutments on the ram adapted to indirectly influence the control element, and clutch members between said element and the main pump adapted to adjust said pump for maximum delivery when said element is adjusted to return movement by said abutments, said clutch members having an idle movement to prevent the production of shocks during the reversal.
  • an oscillatable main pump casing a pull element attached at one end to said casing, a lever fixed on the control element and attached to the other end of said pull element so that during the rotation of said pull element said casing is oscillated at an angle of. rotation smaller than that of said pull element.
  • control element having a central bore, a table feed driving shaft longitudinally shiftable in said bore, a part driven by the auxiliary pump, and clutch members between said part and said shaft adapted to transmit the movement of said part to said shaft to effect the table feed.
  • control element having a central bore, a table feed driving shaft longitudinally shiftable in said bore, a part driven by the auxiliary pump, and conical, clutch-members between said part and said shaft adapted to transmit the movement of said part to said shaft to effect the Y table feed.
  • a table feeding mechanism connected to 'the control element, and a blade servo-motor connected with the auxiliary pump and adapted to adjust said control element to actuate said mechanism, and pressure lubricating conduits connectedto said motor and adapted to lead oi! the oil from the auxiliary pump to lubricate the machine.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)
US2710A 1934-01-24 1935-01-21 High speed planing machine with hydraulic ram drive Expired - Lifetime US2058782A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2058782X 1934-01-24

Publications (1)

Publication Number Publication Date
US2058782A true US2058782A (en) 1936-10-27

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ID=7982994

Family Applications (1)

Application Number Title Priority Date Filing Date
US2710A Expired - Lifetime US2058782A (en) 1934-01-24 1935-01-21 High speed planing machine with hydraulic ram drive

Country Status (2)

Country Link
US (1) US2058782A (fr)
FR (1) FR787066A (fr)

Also Published As

Publication number Publication date
FR787066A (fr) 1935-09-16

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