SU927520A1

SU927520A1 - Machine for cutting flash off threaded plastic articles

Info

Publication number: SU927520A1
Application number: SU802986042A
Authority: SU
Inventors: Анатолий Федорович Беляев; Николай Юрьевич Волчанский
Original assignee: Куйбышевское производственное объединение "Завод им.Масленникова"
Priority date: 1980-09-25
Filing date: 1980-09-25
Publication date: 1982-05-15

Description

(5) УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ ОБЛОЯ С РЕЗЬБОВЫХ ПЛАСТМАССОВЫХ ДЕТАЛЕЙ(5) DEVICE TO REMOVE A WALL WITH THREAD PLASTIC PARTS

II

Устройство относитс к переработке полимерных материалов и может быть использовано при обработке резьбы на пластмассовых детал х.The device relates to the processing of polymeric materials and can be used in machining threads on plastic parts.

Известен инструмент дл обрезки выступов, заусенцев и других дефектов с поверхности выполненный в виде держател со съемным лезвием (jj.A tool for trimming protrusions, burrs and other surface defects made in the form of a holder with a removable blade (jj.

Однако этот инструмент может быть использован дл обработки изделий только из эластичных материалов, например , резин и при этом обработка производитс вручную.However, this tool can be used to process products only from elastic materials, for example, rubber, and at the same time the processing is done manually.

Наиболее близким к изобретению вл етс устройство дл удалени обло с рерьбовых пластмассовых деталей , включающее оправку с закрепленными на ней обрабатывающими элементами , режущие кромки которых расположены с шагом, соответствующим шагу обрабатываемой резьбы i2..The closest to the invention is a device for removing oblo from ribbed plastic parts, including a mandrel with machining elements attached to it, the cutting edges of which are arranged in a pitch corresponding to the pitch of the thread i2 being machined.

К недостаткам данного устройства относитс то, что сн тие обло производитс вручную дл качественногоThe disadvantages of this device include the fact that removing the device is performed manually for quality

СНЯТИЯ обло необходимо плотно поджимать инструмент к обрабатываемой резьбовой поверхности пластмассовой детали , режущие кромки инструмента быстро туп тс , это приводит к тому, что режуща кромка инструмента сминает облой на резьбовой поверхности и не полностью удал ет его, если де тали изготовлены из термореактивных пластмасс, таких как АГ-4, В, ДСВ, фенопласты, облой, получающийс на резьбе детали, обладает достаточно высокой прочностью и к инструменту необходимо прикладывать значительные усили , что может привести к срыву инструмента с детали и повреждению . резьбовой поверхности детали,REMOVAL blade must tightly press the tool to the machined threaded surface of the plastic part, the cutting edges of the tool quickly blunt, this leads to the fact that the cutting edge of the tool crushes the scrap on the threaded surface and does not completely remove it if the details are made of thermosetting plastics such as AG-4, V, DSV, phenoplasts, a burr obtained on the part's thread has a sufficiently high strength and considerable effort must be made to the tool, which can lead to a breakdown of the tool nta with parts and damage. threaded surface of the part

Цель изобретени вл етс повышение производительности труда и улучшение качества обработки.The purpose of the invention is to increase productivity and improve processing quality.

Claims

The goal is achieved by the fact that the device for removing the plume from threaded plastic parts, including the mandrel with machining elements attached to it, the cutting edges of which are arranged in increments corresponding to the thread to be machined, is provided with a housing and a spring-loaded bar above it, having a window in the center and longitudinal grooves on the upper surface along the thread of the part, while the machining elements are made in the form of a set of cutters placed in the housing under the window of the strip. In FIG. 1 shows the proposed device, a top view, in FIG. 2 a section A-A in FIG. 1. A device for removing oblo from threaded plastic parts includes a mandrel 1 with machining elements fixed on it as a set of milling cutters 2, the cutting edges of which are arranged in steps corresponding to the pitch of the thread being machined. The mandrel 1 is mounted in the housing 3 and fixed in the spindle horizontal milling machine (not shown). A bar 4 is installed above the body 3 on the columns 5 and spring 6 is loaded. In the upper position, the bar k is fixed with screws 7. The bar 4 has a through window 8 in the center and longitudinal grooves 9 for the part to be threaded. A bracket 11 is attached to the housing 3 with screws 10, which serves to enclose the working area. To attach the device to the table of the horizontal milling machine, there is a groove 12 at the base of the body 1. The device on the machine table is positioned so that the grooves on the upper surface of the bar A coincide with the grooves on the assembled package of mills

2. Removal of the flush from the threaded surface of the part is performed as follows. The part is mounted on the film k so that the protrusions on the threaded surface of the part fall into the grooves on the bar A and the splinter on the threaded surface of the part along the connector line of the mold die placed in the window 8 of the bar. The part presses against the plan 9 04 ke 4 and at the same time moves along with it vertically downwards in the direction of the rotating packet of the milling cutter 2, thus the reciprocating rotational movement of the part around the axis of the threaded surface is performed. A package of cutters 2 cuts burr on the threaded surface of the part. The processed part is removed from the strip 4, and the strip t is returned to its original position by the action of the springs 6. The use of the invention makes it possible to mechanize the operation of removing the flush from the threaded surface of plastic parts, to improve the quality of treatment of the threaded surface. Making the top bar, on which the workpiece is being mounted, flat, allows the strip to be removed from parts of different diameters with the same thread pitch. Apparatus of the Invention A device for removing oblo from threaded plastic parts, comprising a mandrel with machining elements attached to it, the cutting edges of which are arranged in increments corresponding to the pitch of the thread being machined, characterized in that, in order to increase labor productivity and improve the quality of machining, the device is provided with a housing and a spring-loaded plate located above it, having a window in the center and longitudinal grooves on the upper surface under the thread of the part, while the machining elements of Designed in the form of a set of cutters placed in the housing under the slat window. Sources of information taken into account in the examination 1. UK patent number 1 81903, cl. In 29 of 17/12, published. 19772. USSR author's certificate ff, cl. B 29 C 17/12, 1975 (prototype).

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