WO2015112037A2 - Machine automatique de polissage de segments - Google Patents

Machine automatique de polissage de segments Download PDF

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Publication number
WO2015112037A2
WO2015112037A2 PCT/PT2015/000010 PT2015000010W WO2015112037A2 WO 2015112037 A2 WO2015112037 A2 WO 2015112037A2 PT 2015000010 W PT2015000010 W PT 2015000010W WO 2015112037 A2 WO2015112037 A2 WO 2015112037A2
Authority
WO
WIPO (PCT)
Prior art keywords
segments
polishing
machine according
polishing machine
segment
Prior art date
Application number
PCT/PT2015/000010
Other languages
English (en)
Other versions
WO2015112037A3 (fr
Inventor
Custódio PEREIRA RAMOS
Vitor Gaspar CAÇADOR
Sérgio CAÇADOR RAMOS
Dário CAÇADOR RAMOS
Original Assignee
Rari - Construções Metálicas, Engenharia,Projectos E Soluções Industriais, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rari - Construções Metálicas, Engenharia,Projectos E Soluções Industriais, S.A. filed Critical Rari - Construções Metálicas, Engenharia,Projectos E Soluções Industriais, S.A.
Publication of WO2015112037A2 publication Critical patent/WO2015112037A2/fr
Publication of WO2015112037A3 publication Critical patent/WO2015112037A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
    • B24B5/02—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work
    • B24B5/12—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor involving centres or chucks for holding work for grinding cylindrical surfaces both externally and internally with several grinding wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece

Definitions

  • This invention concerns a machine for polishing piston segments for internal combustion engines.
  • This polish is part of the finishing process of the segments, which are polished to standardize their characteristics and prepare the surface so they can be mounted on a motor .
  • the segments polishing process is performed manually because of the criticality of the process. This polishing is performed on the outer and inner surface (the internal thread is dependent on the shape) , and the control operation is done by the operator controlling the strength and polishing process time and adjust it according to the needs of the product.
  • this invention makes this process fully automated, allowing the internal and external grinding segments, which ensures a wide range of sizes and shapes.
  • a major advantage of this invention is that with this invention, it is possible to make a quantum leap in performance of this kind of process that is highly susceptible to variations due to human intervention in the process. In addition to the quality increase, we intend to achieve to improve interoperability and reduce process costs. In addition it is also possible to increase substantially over the process control and recording characteristics of the finished product. Until to the present day, never had managed to industrialize this process due to its characteristics, since the phase state of the present technique there is no system that could be applied to the resolution of operational problems noted.
  • this invention allows polishing of several segments materials or coatings .
  • This invention relates to the manufacturing processes of the equipment, such as handling, machining, loading and unloading .
  • the manual process segments are stacked, sealed and compressed into a cylindrical block, tight on the tops. Clamping force keeps the block closed and grouped segments as follows for a machine that puts the run, where the operator has with the abrasive for polishing. With regard to this process are not known any more variant as to give the same performance .
  • This process has a lot of manual adjustment, which is what gives the system viability, since great care is necessary in handling of the segments, beginning with the task of placing and positioning the block, and passing through the sensitive operation to polish the segments having the desired surface quality.
  • the external polishing operation of the segments is very important because it is the surface that will scrape on the engine, shirts, care that it effectively isolate without creating excessive friction to damage the engine.
  • the segments are generally coated, for example with chromium, whereby the polishing must be carried out with extreme care to avoid damage .
  • segments there are several types of segments, particularly with regard to shape, size and material.
  • the segments must be attached in a block and closed only on the basis of clamping force on block tops. This process is highly susceptible to the conditions of the segments. For example, in the case of triangular cross -section segments, the contact surface between segments is only one line, making the process highly susceptible to interference.
  • Another problem is the cleanliness of the segments, which may contain traces of oil and even impurities. In the case of oils or fats that may affect the adhesion of the segments and have come out of position or even if they cannot find the operating position.
  • the concentricity of the segment block is critical to the process, because even though the equipment provides a power compensation system, the specific differences between the polishing material, and the segments (originated by profile segments block) can cause irregularities that condition their quality. As such, it is important to ensure that both the block and is concentric with the same shape, and that the system has a polishing action accurately and fast enough to compensate for any deviations .
  • the control of the polishing operation is critical.
  • the polishing process is different from other mechanisms (for example boot chip) it controls accurately the cutting operation.
  • performance varies due to the state of wear of the abrasive material, strength, rotation and vibration, and even due to the cleanliness of the segments .
  • abrasive materials affects the repeatability of the process, mainly because it was not fully control the state of the equipment. In this case, the wear and clogging of abrasive materials which affects the process. If the operating parameters are equal, the differences in abrasive materials cause large differences in quality. These differences are so high that cannot point to an average.
  • the fastening system and fixing segments is one of the biggest unknowns of this project due to technical requirement that is demanded from you.
  • This component should enable support a given set of closed concentric segments and throughout the polishing operation, which requires to exert a high force in the closing and tightening movement, ensuring very demanding levels of accuracy.
  • the present invention concerns a fully automated machine for grinding segments, which has the structure manufactured in stainless steel and aluminum, and at its bottom part will be located command and control, and the exhaust chamber by suction particles while the top will be located polishing the drive elements and encapsulated by a cover in transparent acrylic provided with a door for maintenance and inlet and outlet segments.
  • the equipment is prepared for connection to the general ventilation system of the plant, or to a dedicated exhaust.
  • the equipment is designed and manufactured to work 22 hours per day, 6 days a week.
  • the machine will comprise the following main elements: segment fixation device; gripper system; polish system; power system; discharge system; security systems
  • Figure 1 - is the general view of the invention and its constituents .
  • FIG. 2 Overview of the bench that supports the machine;
  • Figure 3 view of the protection structure;
  • Figure 4 detail of the polish system;
  • the invention consists of the following main elements: fixing device segments; system of pinchers,- polish system; power system; exhaust system; security systems .
  • the segments (10) are fixed on a centering system (8) point and tailstock, one fixed and one movable, to grip and support the segments in the polish assembly up to 130 mm wide.
  • This system moves through a motor reducer (13) with two output shafts.
  • the drive of the geared motor (13) is controlled by a frequency converter (14) , which allows controlling the clamping force of the segments (10) .
  • the rotational movement is programmable from 400 rpm to 1000 rpm, in both directions (clockwise and counterclockwise) being controlled by a frequency converter (14) .
  • the placement and removal of segments (10) is carried out by two sets of jaws (3) .
  • the pinchers (3) placed has a minimum closing force 1200 N, which is achieved by a geared motor (13) controlled by a frequency inverter (14) so that force can be controlled.
  • the pinchers (3) removal does not require closing force and will therefore be actuated by a pneumatic cylinder (11) .
  • pinchers (3) are aggregated into a horizontal movement system for automatic feeding, food stick (12) to the fastening device (15) and to the output of the rod.
  • Each jaw (3) performs a vertical movement so that it can leave the set of segments (10) at the height of the clamping device (15) .
  • the pinchers (3) allow the tool change (necklaces) for each type of diameter, allowing close the segment with nominal diameter 60-160 mm.
  • the polishing system (4) comprises a polish (9); segments one machine (39) ; a holder for the polish of 200 mm diameter and 130 mm in width, with oscillatory movement in the longitudinal direction (X-axis) of the shuttle type with a stroke of 150mm, adjustable so as to be controlled by two movements of the function polishing time; a pneumatic actuator (37); an electric linear actuator (35); a parallelogram (26) system; a guide to the parallelogram system (32) ; a load cell (27) ; a soldier collector (28) ; a suction box (40) ; two lateral collectors (29) ; a modified collector; a frequency inverter (14) .
  • the polish's rotation (9) is possible in both directions (clockwise and counter-clockwise) with programmable duration and speed up to 1500 rpm.
  • the segments machine (39) one of the essential components of the invention consists of a system screwdriver (41) having a central plate (31) , a profiled guide (32) , a skid (33), one screwdriver (30 ) and support respective screwdriver (34) , respective support and an actuator (35) , a socket wrench (36) and pneumatic actuators and respective adapters (37) ; a print head (38) with a sensor (42) ; a motor with a brake (43) ; a fastener segments (44) ; a gantry manipulation (45) ; wherein the polishing is carried segments .
  • a system screwdriver (41) having a central plate (31) , a profiled guide (32) , a skid (33), one screwdriver (30 ) and support respective screwdriver (34) , respective support and an actuator (35) , a socket wrench (36) and pneumatic actuators and respective adapters (37) ; a print head (38) with a sensor (42) ; a motor with a brake (43)
  • the support (17) of the rod segments is carried out for feeding a movement back and forth (X-axis) so that the segments (10) can be withdrawn from the feed rod (12) .
  • a pneumatic cylinder (11) that pushes the segments along the -.rod (X axis) .
  • the discharge of the segments (10) after polish support (17) of the rod is held by a gripper system (18) that discharges over an aligner (7) so that the segments (10) can be removed from the machine already aligned.
  • Suction system (19) In order to make the segments (10) free of any residue from the polishing process, the equipment will consist of a vacuum system by compressed air, controlled by a solenoid valve (20) and an air pressure regulator (21) .
  • This system also permits, in case of need to vacuuming during the polishing process to reduce the temperature of the segments (10) .
  • the invention is protected by a personal accident cover (23), preferably, acrylic, just having inlet and outlet of the segments (10) .
  • the system will be controlled by a programmable logic controller (24) connected to the frequency inverters (14) and bracket (25) touch interface for PROFIBUS communication protocol .
  • the desired operation is selected, namely the movement, direction, pressure, velocity, and time required for polishing the threads;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)

Abstract

La présente invention concerne une machine pour polir des segments de piston pour moteurs à combustion interne, et son procédé d'utilisation par l'intermédiaire d'un programme informatique. Cette machine est entièrement automatique. L'invention est constituée des éléments principaux suivants : un dispositif de serrage (5) de segments; un système à griffes (3); un système de polissage (4); une alimentation électrique (16); un système de sortie (6), un système d'aspiration (19), un système de sécurité, un établi (1) avec élément de recouvrement (23) et un ordinateur (25) destiné à mettre en œuvre le polissage des segments (10) à l'aide d'un programme informatique.
PCT/PT2015/000010 2014-01-21 2015-01-21 Machine automatique de polissage de segments WO2015112037A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT107423A PT107423B (pt) 2014-01-21 2014-01-21 Escovadora de anéis automática e seu método de funcionamento
PT107423 2014-01-21

Publications (2)

Publication Number Publication Date
WO2015112037A2 true WO2015112037A2 (fr) 2015-07-30
WO2015112037A3 WO2015112037A3 (fr) 2015-12-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PT2015/000010 WO2015112037A2 (fr) 2014-01-21 2015-01-21 Machine automatique de polissage de segments

Country Status (2)

Country Link
PT (1) PT107423B (fr)
WO (1) WO2015112037A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109277918A (zh) * 2018-11-05 2019-01-29 王�华 一种全自动打磨抛光设备及方法
CN113021088A (zh) * 2021-04-20 2021-06-25 张义 一种微型发动机的制造加工方法
CN114851007A (zh) * 2022-05-27 2022-08-05 维格斯(上海)流体技术有限公司 一种不锈钢管端口去毛刺设备
CN115284126A (zh) * 2022-07-19 2022-11-04 常州航空工模具有限公司 一种单向电机生产用外壳打磨装置
CN118143770A (zh) * 2024-05-13 2024-06-07 胜利油田金岛实业有限责任公司 一种废旧油管修复方法及修复设备

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DE10137314A1 (de) * 2001-07-24 2003-02-13 Minitec For Better Gears Gmbh Vorrichtung zum Glätten von Zahnrädern
US7241200B2 (en) * 2005-03-23 2007-07-10 Control Systems Technologies, Llc Control system and method for processing jewelry and the like
DE102008027050A1 (de) * 2008-06-06 2009-12-10 Grenzebach Maschinenbau Gmbh Verfahren und Vorrichtung zum automatischen Kanten - Schleifen von Glasplatten unter Reinraumbedingungen
DE102012006502A1 (de) * 2012-03-29 2013-10-02 Dula-Werke Dustmann & Co. Gmbh Verfahren zum mehrstufigen Schleifen von Werkstücken, sowie Vakuumtisch, Vorratsbehälter, Abstreifeinrichtung und Anlage zur Durchführung des Verfahrens

Non-Patent Citations (1)

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Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109277918A (zh) * 2018-11-05 2019-01-29 王�华 一种全自动打磨抛光设备及方法
CN113021088A (zh) * 2021-04-20 2021-06-25 张义 一种微型发动机的制造加工方法
CN113021088B (zh) * 2021-04-20 2023-12-29 重庆卓普精密机械(集团)股份有限公司 一种微型发动机的制造加工方法
CN114851007A (zh) * 2022-05-27 2022-08-05 维格斯(上海)流体技术有限公司 一种不锈钢管端口去毛刺设备
CN115284126A (zh) * 2022-07-19 2022-11-04 常州航空工模具有限公司 一种单向电机生产用外壳打磨装置
CN115284126B (zh) * 2022-07-19 2024-05-14 常州航空工模具有限公司 一种单向电机生产用外壳打磨装置
CN118143770A (zh) * 2024-05-13 2024-06-07 胜利油田金岛实业有限责任公司 一种废旧油管修复方法及修复设备

Also Published As

Publication number Publication date
WO2015112037A3 (fr) 2015-12-03
PT107423A (pt) 2015-08-27
PT107423B (pt) 2021-08-27

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