SU1342700A1 - Arrangement for chamfering piston circlips - Google Patents

Abstract

The invention relates to the field of machine tools. The goal is to increase chamfering performance in the piston ring lock. The device comprises a frame on which a composite cantilever support beam 13 is fixed, a grinding head 5, guides 8. A wedge 14 is located in front of the supporting beam. A guide carriage 6 with a pusher 1 1 is installed on the guides 8. The carrying beam has a cross section in the form of an iso-lateral trapezium. The spindle of the grinding head is located in the plane of symmetry of the carrier beam above the smaller base of its cross section. Chamfering in the lock of piston rings is carried out when the pusher 11 moves along the supporting beam 13. 6 sludge. (L J V / V .1

Description

The invention relates to a machine tool industry and can be used to create equipment for the manufacture of piston rings of internal combustion engines.

The purpose of the invention is to increase the chamfering performance in the piston ring lock by combining them with transporting it through the treatment zone by using a wedge installed in front of the support beam, through which the rings move to the grinding head, and the conveyor with the supplied pusher.

Figure 1 shows the proposed device, a General view; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1; figure 4 - section bb In figure 2; on fig.Z - the position of the ring at the beginning of processing; figure 6 is the same at the end of processing.

The device for chamfering in the piston ring lock has a frame 1 on which a feeder 2 is located, designed to deliver a metered number of rings 3, a conveyor 4 transmitting axial movement to the ring package, a grinding head 5.

The conveyor belt of the 4 rings is made in its upward movement and is held by de-carriages 6 with rollers 7, envelopes 16, expanding, two guides 8, friction drive 9 with elastic roller 10, In the carriage body there is a push rod

6 mounted with 11 pneumatic actuator 1 2.

A base cantilever beam 13 is fastened on the frame 1, in front of which a wedge 14 is placed. The beam has guide elements 15 with 16 unclamping stops with a bevel L on the upper edges intended to keep the piston rings from further approaching the lock branches. The guide elements 15 together with the pusher 11 form a mechanism for expanding the rings.

The grinding head 5 is equipped with an I7 drive and a tool spindle 18, the guide elements 15 are made in the form of plates fixed symmetrically with respect to the axis of the carrier beam 13, having a cross section in 35

40

Moving along the guide elements 15, the rings run over the edges of the lock onto the tapered portion of the rotating tool 19 and move downward, acquiring a new support in the quality and structure. Chamfering on the cylindrical section of the tool. as the rings move along the tool, the chamfer size increases until contact with the unclamping clamps of the guide elements 1 is restored. The chamfer size C is always equal to 45 Hz. Further sliding of the rings and guiding elements 15 along the tool does not increase the chamfer, but ensures their grinding in The grinding area, the length of which is determined by the carriage speed and the number of revolutions of the drive 17, ensures a high purity of the chamfer surface, their symmetry and dimensional accuracy even with a significant output of 50

de equiparated trapezium, smaller than the base gg of the instrument. The rings of which are facing the spindle 18 are moved by the conveyor 4 to the outgoing-chip-grinding head 5 carrying the tool 19 in the form of, for example, grinding them out of the working area and slide off the guide elements 15. Thereafter, the pusher 11 is retracted.

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The piston rings 3 supplied for processing are delivered by the feeder in the form of a package of several pieces and stop at the lead-in portion of the wedge 14. Then the pneumatic actuator 12 of the pusher 11 is turned on, which covers the package of rings on both sides with a small clearance at the ends. In this case, the rings do not lose the possibility of plane-parallel movement in the vertical plane and are in a free state along the diameter.

The conveyor 4 begins to move the ring rings to the treatment area. The movement of the carriage 6 occurs under the action of the friction drive 9 with (1 elastic roller 10 due to rolling along the guides 8. At the same time, the rings, run over the wedge 14, spread the locking branches to a value sufficient for entering the guiding elements 15, 5 Because the latter are located symmetrically with respect to the axis of the tool 19, the piston rings have the ability, due to elastic forces compressing the branches of the lock, to slide off when

five

its movement upwards and held by the unclenders 16,

Moving along the guide elements 15, the rings run over the edges of the lock on the tapered portion of the rotating tool 19 and move downward, acquiring a new support as a tool. On the cylindrical section of the tool is chamfering. As the rings move along the tool, the size of the chamfer increases until contact with limiters expanding the guide elements 15 is restored. The chamfer amount C is always equal to the gap H, Further sliding of the rings along the guide elements 15 along the tool does not increase the chamfer, but ensures their grinding. The grinding area, the length of which is determined by the carriage speed and the number of revolutions of the drive 17, guarantees a high purity of the chamfer surface, their symmetry and dimensional accuracy, even with a significant output of

the initial part of the instrument. The rings are moved by conveyor 4 to the exit

yes, they are out of the machining area and slide off the guide elements 15. Thereafter, the pusher 11 is retracted.

and the carriage 6 returns to its original position. The cycle resumes.

Thus, due to the presence in the proposed device of a wedge and a conveyor with an actuator installed in front of the support beam, the expansion of the rings with their movement is achieved and, as a result, the chamfering performance in the lock is increased.

Claims (1)

Invention Formula A device for chamfering in a lock of piston rings, comprising a composite cantilever support beam mounted on a frame with a cross section in five ipaBaGoKoii trapezium, mechanisms for unclamping rings, unclamping guards and grinding head with tool spindle, characterized in that it is equipped with a wedge located in front of the bottom of the hole by combining unclamping and transporting the rings, and there is a wedge located in front of the core, and wedge opening and transporting the rings; made in the form of guides arranged parallel to the carrier beam and connected with the carriage drive mounted on the guides and fitted with a feed pusher, while the clamping head of the grinding head olozhen supporting beam in the plane of symmetry of its smaller base section. 12 FIG. g 1 i / 4 7 (l () 6-5 6-6 teJ // 1415 (Puzm Figb Editor I.Gorn Compiled by N. Ermakova Tehred A. Kravchuk Order 4584/14 Circulation 714 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 FIG. b Proofreader M. Pojo