RU2489245C1 - Method of assembling flexible hose tips - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to machine-assembly processes, particularly, to assembly of flexible hose tips. Insert is inserted in tip case. Punch with annular ledge is used to form annular groove of (1.2-1.6)D in diameter where D is insert diameter inside the case, at its bottom. Then, punch with stepped ledge is used to calk insert in tip case, ledge diameter being equal to that of annular groove just made.

EFFECT: higher quality of assembly and better tightness.

1 dwg

Description

The invention relates to mechanical assembly production, and in particular to devices for assembling the tips of flexible brake hoses in the automotive industry.

A known method of assembling the tips of flexible hoses, which consists in pressing the liner into the body of the tip and subsequent caulking, while at the bottom of the blind cavity of the body of the tip there is an annular protrusion that is jammed when caulking the liner. The liner is also performed with a chamfer on the end face for orientation during mounting (see application US 2003/0090107, nki 285/256).

The disadvantage of this method is:

- the need for prefabrication of the tip body with an annular protrusion at the bottom of the blind cavity;

- the need for a chamfer at the end of the liner to facilitate its orientation during press fitting.

The need for a chamfer to facilitate orientation is caused by the fact that an annular protrusion is formed at the bottom of the blind cavity of the tip body, forming a sharp edge when the blind cavity passes into the cavity intended to press in the liner.

The closest technical solution is the method of assembling the tips of flexible hoses, which consists in pressing the insert into the body of the tip and subsequent caulking, while pressing the insert into the tip is carried out in two stages, the first of which is pressed with the minimum allowable force, and the second with the maximum allowable, performing at each stage control of the pressing-in force, rejecting at the first stage details, forces whose pressing-in is less than the minimum allowable, and at the second more than the maximum about admissible (see.with. No. 1266700 SU cl. B23P 19/02).

The disadvantage of this method is the need for additional steps during the operation of pressing the liner into the body of the tip of the flexible hoses, and at each stage it is necessary to control the pressing force, which is time-consuming and does not guarantee high quality assembly, and, therefore, the tightness of the finished product.

The technical problem solved by the invention is to improve the quality of assembly of the tips of the flexible hoses and ensure the tightness of the finished connection by forming an annular groove during assembly and caulking the insert into the tip body with a punch with a stepped protrusion equal to the diameter of the annular groove

The technical problem is solved in that in the method of assembling the tips of the flexible hoses, including pressing the liner into the tip body and subsequently chasing it, according to the invention, the assembly is carried out in three positions, while at the first position the liner is pressed into the tip body, and at the second position, at the bottom of the blind cavity of the above-mentioned case, by means of a punch with an annular protrusion, an annular groove with a diameter of (1.2 ÷ 1.6) D is formed, where D is the diameter of the insert, and in the last third position with the next punch with upenchatym protrusion having a diameter approximately equal to the diameter of the annular groove obtained previously zachekanivayut liner handpiece housing.

The invention is illustrated in the drawing, which shows the technological process of assembling the tips of flexible hoses.

The method of assembly of the tips of the flexible hoses is as follows. Tip body 1 and liner 2 are fed separately to the assembly by means of automatic hopper-loading orienting devices (not shown), while the liner, with its smaller diameter, is installed in the hole of the pusher 3, and the body is mounted on a turntable. When moving the turntable, the casing is fed to the insertion position, where the pusher 3, translationally moving along the axis of the blind cavity of the tip body 1, presses the insert into the aforementioned casing, then the pusher 3 moves back. Then, when moving the rotary table, the housing with the pressed-in liner is fed to the position where the punch 4 with an annular protrusion forms an annular groove. Next, the rotary table moves the tip body with the pressed-in liner to the next position, where, by means of a punch 5 with a stepped protrusion and with a step diameter equal to the diameter of the annular groove, the insert is chased into the tip body for a more tight connection.

Using the proposed method allows to obtain a hermetically pressed liner without violating the geometry of the inner surface of the blind cavity of the tip body.

Claims (1)

A method of assembling tips of flexible hoses, including pressing the liner into the tip body and subsequent caulking, characterized in that the assembly is carried out in three positions, while at the first position, the liner is pressed into the tip body, at the second position, at the bottom of the blind cavity of the body by means of a punch with an annular protrusion form an annular groove with a diameter of (1.2 ... 1.6) D, where D is the diameter of the liner, and at the last position with the next punch with a stepped protrusion, the diameter of which is equal to the diameter earlier than the floor nennogo ring grooves, embed the liner in the body of the tip.