SU1706847A1 - Device for mandreling pipe hole - Google Patents

Description

The invention relates to metal processing with a combined dorning tool of billet parts with holes of complex curvilinear or rectilinear shape with simultaneous machining, plastic deformation and polishing.

317068 7 l

A device for calibers is known. The goal is reached for pipelines and pipelines, which consists of estimating that a device for a dornr-Gz Normalizing element, a cable, a pipe orifice containing a single mechanism, a flexible obolis press with a combination drive mounted on it. by the meridian 5 dorniruyushchy tool in

KI Prosperity of the device. - impossible with a spring hollow holder, straining the simultaneous machining of the cutting-blocking, cutting and deforming deforming using the elements installed inside G0; Avals with through 10 of the flexible shaft holder with fixed-hole due to the absence of a special drive that performs simultaneous translational and rotational movements.

It is known a device for roading a hole in a tubular billet.

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polishing wheel at the end, as well as a drive for moving the tool with two supporting rollers and a device for fixing the pipe, is additionally equipped with a rolling bearing mounted in the end face

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"" -GVRPGTY pipe billet, rolling bag, mounted - - QUALIFICATION of the neck of the tool for the spring-and-holder holder with the possibility of consistency of the contact arm with the flexible and retainer

H ° B1 of the tool and the drive with its ring fixed on the said

Feasting instrument Nedo-rvolu with the ability to interact with

Forward movement of the device of the same device is made in the form of an elastic bone device for distributing the split sleeve with a petalfirnleolmee press equipment and shoulders to grip the toolmaker. The movement mechanism of the port is 25t, inside which there is a hydraulic tool and tool and an adapter. and tapered direction

“s11uN1 1” (; 6J), with swallow-shaped slots

for Replica IT; the previous tail and high-speed electro-T6G; device for dor-engine with rubber-coated roller, also known in the morning surface of the petals

A new bushing hole of the sleeve 30 is made with a configuration of the control, control unit, in the appropriate radio set, horse grooves

Wherein, the deR "" ka dor plastic possibility of contact with the said

as e ;; mTrUnBeKdIostat0k device-lobes, while in the last high-protective previous ones. 35 complete windows for accommodating rollers

STVAi3Tvesten KOMBINI ROVARNN2 dorniruyu-a electric motor and rollers uniform tool containing flexibly placed on the outer surface

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reztsoy.polirovylokru ,. , and, the tool, the drive of it by the protective sleeve SPRING U At figure 3 - section А-А on

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The disadvantage of this device is owner. is low e HOCTbeMT KeeC% dorniering tool BJ due to the absence of an -g of g nid da. rotation of the polishing edge of the tool G to secure the attachment of the fastener On a high-speed, pair-wise, high-speed rotational drive of a flexible shaft from a poly holder 1, inside the rotary wheel. - -.--- -.Uo ,,. U

The purpose of the invention is to increase the reliability of the device, for s, simplify the drive nf-m-value.

Let us talk about uwviv r ,,., ", .... completed in the form of a flexible spring of a spherical tube of two parts of different diameters. The front part 2 of the larger diizing element is installed inside the flexible shaft holder with a fixed

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polishing wheel at the end, as well as a tool moving drive with two supporting rollers and a device for fixing the tube are additionally equipped with a rolling bearing mounted in the end

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Roller set, installed - spring-loaded holder with the possibility of clamping and fixing on the pressing tool holder 1, vn---.--- -.Uo ,,. u

Let us talk about uwviv r ,,., ", .... completed in the form of a flexible spring of a spherical tube of two parts of different diameters. The front part 2 of a larger diameter has an annular groove 3 and the front bead A with a chamfer in contact with the tool drive grip 5 of the tool G, the back suit 6 of the holder 1 is rigidly attached to the front part -2 after installation on the rear part 6 of the flexible protective sleeve 7, compression spring 8, a spherical chip breaker element 9, a cup-shaped cutter 10, a spherical deforming element 11, the bore of which posteriorly a flange 12 of the rear end of the part 6 abuts against the back bearing 13, a inner ring to torogo rigidly mounted on a flexible shaft extending through the opening springs conductive tube holder 1,

Behind the bearing 13, an elastic polishing wheel 15 is rigidly mounted on the flexible shaft, a washer 16 with a seal 17 of the flexible shaft 1 in the washer 16 (for example, threaded, to be able to replace polishing wheels). A flexible protective sleeve 18 is installed on the cylindrical surface of the front part 2 of the holder. At the front end of the spring holder there is an additional rolling bearing 19 supporting the flexible shaft, and a retaining ring 20 on the flexible shaft. In addition, figure 1 shows the workpiece 21, the mounting part window 22 in part 21 and chipping 23 removed by a cutter. The part to be machined is a half-turn-out hydraulic motor body with a curved bore for displacing the pistons, welded from half.

The rotation drive of the polishing wheel of tool G consists of a gripped device 5 made in the form of an elastic conical split sleeve with shoulders to grip the tool holder for the VH groove 3 °. Inside the sleeve 5 there is an integrated hydraulic cylinder 25, on the rod 26 of which there is a conical guide piece 27 sec. three slots 2Y in the form of a dovetail, in which, with the possibility of reciprocating reciprocal movement, the internal projections 29 of the petals 30 are divided by cutting slots 31 of the bushings 5, having (projections), with a configuration corresponding to the grooves 28, and on the outer surface of the sleeve -. fastened high-speed

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an electric motor 32 with a trimming roller 33 and a pair of supporting rubberized rollers 3 for rotating the flexible shaft 1A with a polishing wheel 15, all the rollers being evenly placed around the petals 30 of the split sleeve 5 and in the petals there are windows for accommodating the rollers 33 and Sleeve 5 rigidly installed in the frame 35, which with the help of quick-release checks 36 is attached to the holder 37 mounted on the top plate 38 of the press E.

On the bottom plate 39 of press E, a device for securing pipe billet D, which consists of two sliding sections with matrix parts (not shown), is installed. Fastening parts 21 shown schematically,

In the initial position (FIG. 1), the part 21 of the device is installed and fixed in the adaptation D, which is installed on the bottom plate 39 of the press E, the hole of the part is lubricated with technological lubricant, a combined dorning tool B is inserted into the assembly window 22 of the part 21, the holder 1 of which The right edge of the mounting window 22 is in a vertical, comfortable to grip position. The drive of tool G with the aid of checks 36 is secured in the holder 37 attached to the top plate 38 of the press E. The shoulders for the grip of the tool holder 1 are unclenched.

The device works as follows.

The operator drives the top plate of the press E and moves it down until the gripper 2k of the gripping device is not aligned in height with the annular groove 3 of the tool holder 1, after which the drive of the upper plate of the press is turned off. Then the drive of the gripping jaw is turned on devices 5. The piston of the hydraulic cylinder 25 with the rod 26 moves downwards and moves the conical guide piece 27, in the grooves 28 of which the protrusions 29 are located. The surfaces of the grooves 26 slide along the projections 29, which cause the petals 30 to move closer labor (by making the sleeve 5 and the part 27 conical). When the petals 30 move to the central axis, the shoulders of the 2 petals grip the tool holder 1 for the groove 3 and the drill 71706814

tick 4, and rubber-coated rings 33 and C 4 compresses the flexible shaft And with a guaranteed pressing due to the spring-loaded properties of the petals 30 of the sleeve 5. (the position of the rollers in FIG. 3 is shown with a dotted line). After the tool holder has been gripped, the working fluid of the hydraulic cylinder 25 is cut off (the hydraulic cylinder is locked).

A high-speed electric motor 32 is turned on, which drives the rubberized roller 33, the flexible shaft I1 of the polishing wheel 15 and the supporting rollers 3. Thereafter, the drive of the upper plate 38 of the press E is turned up. When moving up the top plate of the press through the gripping device 5 displacement10

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Increase tool reliability and quality of the surface. At the same time, the hole is polished with a polishing wheel 15, which gets fast rotation through the flexible shaft 1 from the roller 33 of the electric motor 32. The polishing wheel is fixed rigidly on the hard portion of the rear end of the flexible shaft AND with the support on the inner ring of the rolling bearing 13.

The front end of the flexible shaft I is mounted in another roller bearing 19, which allows friction forces between the flexible shaft 1 and the holder 1 to be reduced, and the retaining ring 20 limits the possible (if the

There is a combined dorning tool-20 bearing rings on a flexible shaft) axial displacement of the flexible shaft AND relative to the holder 1, i.e. ensures the prevention of unauthorized disassembly of tools during operation, storage and transportation, therefore, increases the reliability of the device. Polishing paste is applied to the periphery of the polishing wheel.

ment: the front end of the holder 1 is vertically up, and the rest, cutting, dorniruyu and polishing first along the arc of the circumference of the opening of the pipe 21, and when exiting the mounting window - vertically up.

Combined doorway tool In this works as follows.

The compression spring 8 presses through the chip breaker spherical element 9 the cup-shaped cutter 10 to the spherical surface of the deforming element 11, thereby having carried out the preliminary orientation of the cutter 10 relative. but the axis of the hole of the workpiece. Under the influence of traction force transmitted by the flexible holder 1 to the deforming element 11 and the cutter 10, the latter self-aligns itself in the hole of the workpiece under the influence of cutting and pressing forces from the deforming element 11 and cuts off the internal reinforcement of the welds. Chip breaking element crushes chips, spherical deformation -. The reinforcing element 11 performs plastic deformation, smoothing and hardening of the treated surface with

Technological lubrication reduces the cutting force and backing force, eliminates thermal deformations and reduces the force of friction of flexible protective arms against the part, which reduces the wear of the sleeve and reduces the required traction force. Flexible protective sleeves 7 and 18 protect the holder 1 from wear at the points of contact, i.e. method8

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Increase tool reliability and quality of the surface. At the same time, the hole is polished with a polishing wheel 15, which gets fast rotation through the flexible shaft 1 from the roller 33 of the electric motor 32. The polishing wheel is fixed rigidly on the hard portion of the rear end of the flexible shaft AND with the support on the inner ring of the rolling bearing 13.

The front end of the flexible shaft I is mounted in another roller bearing 19, which allows friction forces between the flexible shaft 1 and the holder 1 to be reduced, and the retaining ring 20 limits the possible (if the

bearing rings on a flexible shaft) os5

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The total displacement of the flexible shaft AND relative to the holder 1, i.e. ensures the prevention of unauthorized disassembly of tools during operation, storage and transportation, therefore, increases the reliability of the device. Polishing paste is applied to the periphery of the polishing wheel.

The polishing wheel 15 moves progressively behind the deforming element 11, copying its trajectory of movement and at the same time rotating at high speed, polishes the surface of the hole of the workpiece to a mirror finish. The chips are removed from the part with the aid of a bowl-shaped cutter 10. After the polishing wheel, the tool and the mandrel exit the assembly window, the electric motor 32 and the drive of the upper plate of the press are turned off.

The design of the device allows, if necessary, the replacement of cutters, polishing wheels, deforming and chip breaking elements on the tool. The presence of an additional bearing 19 makes it possible to increase the reliability of the tool and, consequently, the device as a whole, by reducing frictional forces and, consequently, overheating and wear.

The retaining ring 20 ensures that the flexible shaft does not axially move relative to the tool holder, which contributes to increased reliability by eliminating the possibility of unauthorized disassembly of the tool.

The design of the tool drive with a gripping device is simplified due to the fact that the function of the translational movement of the tool is performed by a press, and compact due to the use of new elements to grip the tool holder and drive the rotation of the flexible shaft with a polishing wheel. The spring lobes 30 of the bushings 5 simultaneously perform the function of gripping the holder with their shoulders using the built-in hydraulic drive and, due to the elasticity, the pressure of the rollers 33 and 3 against the flexible shaft f is guaranteed even if the periphery of these wheels is worn and the rotation of the flexible shaft is simultaneously polishing wheel from the electric motor. In addition, one of the petals 30 of the sleeve 5 is the carrier of the electric drive 32 of the roller 33.

Claims (1)

The application of the proposed device makes it possible to increase the reliability of the drive device by performing a drive of rotation of the flexible shaft with a high-speed polishing wheel. Claims Device for mandrel pipe hole containing connected with. press combined dorning tool in the form of a spring hollow holder, chip breaker, cutting and deforming elements, installed $ 0 five a flexible shaft with a polishing wheel fixed at the end, as well as a tool driving drive with two supporting rollers and a pipe fixing device, characterized in that, in order to increase reliability by simplifying the movement drive, it is equipped with a rolling bearing spring holder with the possibility of contact with a flexible shaft, and a retaining ring attached to the shaft with the possibility of interaction with the hem, while the drive movement of the tool It is made in the form of an elastic conical split bushing with petals and shoulders for gripping a tool, inside of which a hydraulic cylinder with a rod and a conical guide with grooves in the form of a dovetail, is placed, and a high-speed electric motor with a rubberized roller, and the inner surface of the petals of the split bushing is configured as corresponding to the grooves of the conical guide, which is in contact with the said petals, while in the latter there are windows for accommodating the rollers, and The motor and rollers are evenly placed on the outer surface of the bush petals. lit L / & ///V/V./V/ 9 I1 "aa 21 / Ii. IS 13 P 11 Yu 23 YES SO 35 3 f, 36 2538