RU78717U1 - Workpiece Promotion Limiter - Google Patents

Abstract

The workpiece advance limiter, made in the form of an abutment mounted for movement along a guide and a latch, characterized in that the abutment on the side of the blanks is equipped with a hinged plate mounted pivotally with the possibility of release from contact with the billet.

Description

Application area

The utility model relates to mechanical engineering and can be used in the machine tool industry, in particular in metalworking machines, mainly cut-offs [В23В 45/00].

State of the art

The workpiece limiters are widely known in the art in the form of a spring-loaded stop installed in the housing, which moves along the measuring rod when adjusted to a specific length of the cut workpiece and is fixed in this position. The plane of rotation of the stop when it is removed from the line of advancement of the workpieces is perpendicular to the direction of movement of the workpieces. The spring-loaded stop, which is part of the command device, interacts with a limit switch mounted in the housing of the spring-loaded stop. Installation and removal of the stop is carried out by turning the stop body and the measuring rod. Using the above analogue, to which there is a link in A.C. No. 522922 of the USSR dated 08.08.74 rubles., IPC class V23V 45/00 to "Procurement advancement limiter", confirmed positive qualities, but during operation, shortcomings were identified, the main of which is as follows. When the emphasis is removed from the movement line of the workpieces, it is mandatory to friction on the stop surface with the workpiece, and when the workpiece is not perpendicular to the longitudinal axis relative to it, even jamming of the stop is not excluded, which may ultimately lead to breakage.

As a prototype of the claimed utility model in terms of technical nature, as well as for most of the matching essential features, a workpiece advancement limiter was selected as shown in the industrial catalog of Irlen Ros Concern (RF) for metalworking equipment (www.irlensb.ru).

In the section of the console-mounted machines catalog of this catalog, the band-mounted console machine ARG200 plus M is provided, equipped with a restriction on the progress of workpieces - a prototype of the claimed utility model. The prototype consists of an emphasis mounted with the possibility of movement along the guide and the latch.

In this case, an emphasis made in the form of a bracket, in the upper part of which a rod with a mounting surface is fixed for interaction with the workpiece, and in the lower part there is an opening for mounting the bracket on a guide made in the form of a rod. In addition, the emphasis is equipped with a screw lock relative to the guide.

The operation of the prototype over a long period confirmed the positive properties of simplicity of design and maintenance, but also revealed a number of disadvantages. The main one is the possibility of jamming the cutting tool at the end of the technological cutting operation. Indeed, firstly, if the cantilever scheme of its fastening in a vise was used to fix the workpiece, then at the moment of cutting the body of the workpiece, the latter is "pulled" by the cutting tool into the cutting zone. This causes a skew of the part between the plane of the cutting tool and the mating plane of the stop. Secondly, if a quick-cutting tool is used, for example, an abrasive cutting disc, temperature deformation (increase in length) of the workpiece is possible, which also causes jamming of the cutting tool.

EFFECT: improvement of the limiter of advancement of workpieces is provided by reducing the likelihood of jamming of the cutting tool at the time of completion of cutting the body of the workpiece, the productivity of the technological process is increased.

Utility Model Implementation

The claimed technical result is achieved by the fact that in the known limiter for the advancement of workpieces, made in the form of an emphasis mounted with the possibility of movement along the guide and the latch, according to a useful model, the emphasis on the side of the blanks is equipped with a plate pivotally mounted with the possibility of release from contact with the workpiece.

To clarify the work and essence of the claimed utility model of the limiter for the advancement of workpieces, as well as evidence of the possibility of its industrial use, a drawing is given: FIG. 1 - appearance; FIG. 2 is a view A of FIG. one.

Workpiece advancement limiter is designed for use as attachments of an abrasive cutting machine and consists of a stop 1,

installed with the possibility of moving along the guide 2 and the latch 3. The stop 1 is made of metal corners in the plan in the form of an I-beam, in the central part of which the latch is mounted 3. On the end faces of the stop 1, from the side of the blanks, on the axes 4, hinged plates 5 are mounted that allows you to remove the plate 5 from the line of the longitudinal axis of the workpiece, eliminating their contact with the workpiece. The guide 2 is structurally made in the form of a table 6 closed in a transverse section with a longitudinal groove 7. For mounting the workpiece advance limiter on the machine at the end of the table 6, holes 8 are made for fastening parts. In addition, table 6 is equipped with a length-adjustable spacer 9 and bracket 10 for the rigidity of mounting table 6 to the machine. The latch 3 is made in the form of a screw 11 with a nut 12 and a handle 13, which allows the machine operator to conveniently adjust the position of the stop 1 of the workpiece advance limiter relative to the table 6 with the latch 3 to a predetermined length of the cut workpieces. For the convenience of controlling the position of the hinged plates 5, they are equipped with handles 14.

In this particular case, the use of the claimed utility model, in the stop 1, there are hinged plates 5 at both ends, which makes it possible to use either of them with a 180 ° turn. The proposed limiter for the promotion of blanks is used as follows:

- using the bracket 9 and the holes 8, the guide 2 is fixed on the machine;

- set the stop 1 to the position of the specified length of the cut workpiece by moving the stop 1 by the operator relative to the table 6 in the groove 7 and fixing the position with the latch 3;

- feeding the workpiece to the contact with the hinged plate 5, which is located in the plane of the end face of the abutment 1, we fix its position with a vice of the machine and tilt the plate 5 by 180 °.

Thus, the probability of jamming of the cutting tool by the end face of the workpiece in case of its temperature deformation is reduced. The proposed restriction on the promotion of blanks allows you to:

- reduce the likelihood of jamming of the cutting tool by removing from the contact of the hinged plate with the workpiece during cutting;

- to increase the productivity of the process due to the equipment of the stop with hinged plates from both ends;

- reduce injuries and improve its culture.

Claims (1)

The workpiece advance limiter, made in the form of an abutment mounted for movement along a guide and a latch, characterized in that the abutment on the side of the blanks is equipped with a hinged plate mounted pivotally with the possibility of release from contact with the billet.