Light and small force control mechanism for workpiece polishing

Abstract

The utility model relates to a light and small force control mechanism for workpiece polishing. The light and small force control mechanism is characterized in that a box body is composed of a box body main body, a head end plate and a tail end plate; the mounting plate is fixed in the box body, and the front end part of the mounting plate penetrates through the central through hole in the head end plate; the attitude sensor is fixedly mounted on the front surface of the mounting plate close to the tail end plate; the air cylinder is fixedly installed on the front face of the installation plate and located on one side of the attitude sensor and the guide rail, the control panel is fixedly installed on the back face of the installation plate, and the distance sensor is fixedly installed on the back face of the installation plate and close to the front end of the installation plate. The long side of the connecting frame is fixedly connected with the sliding block, and the short side is connected with the cylinder rod end through a floating joint; the rear end of the power output disc is fixedly connected with the short edge; the front end of the power output disc is a polisher mounting end; the reversing electromagnetic valve and the gas proportional valve are connected to an outer pipeline for supplying gas to the air cylinder; the tail end of the corrugated protective sleeve is fixedly connected with a fixing ring on the front side of the head end plate, and the head end is fixedly connected with the rear side face of the power output disc. The mechanism is small in size and suitable for operation in narrow space.

Description

Technical Field

[0001] This utility model belongs to machine tool processing auxiliary equipment, and relates to grinding processing equipment, and more particularly to a lightweight force control mechanism for workpiece grinding. Background Technology

[0002] Force-controlled grinding equipment is a processing device that enables floating control of the grinder, thereby ensuring constant control of the grinding force on the workpiece surface. The grinder is installed at the output end of the force control mechanism, which controls the floating of the grinder. Existing force control mechanisms come in various structural forms, such as box-shaped and cylindrical box-shaped. Inside the box, there is a mounting plate, on which are mounted cylinders, gas proportional valves, reversing solenoid valves, attitude sensors, distance sensors, etc. The power output component is located outside the box and is driven by the cylinders. Due to the large volume of the gas proportional valves and reversing solenoid valves, existing force control mechanisms are relatively large and cannot be used for grinding surfaces in confined spaces. Furthermore, during the grinding process, the floating status of the grinder cannot be directly observed. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model proposes a compact and lightweight force control mechanism for workpiece grinding that is suitable for operation in confined spaces.

[0004] The above-mentioned objective of this utility model is achieved through the following technical solution:

[0005] A lightweight force control mechanism for workpiece grinding includes a housing, a power output plate, a mounting plate, a linear guide pair, a connecting frame, a cylinder, an attitude sensor, a control board, a distance sensor, a corrugated protective sleeve, a reversing solenoid valve, and a gas proportional valve.

[0006] The housing is generally rectangular in shape, consisting of a main body and front and rear end plates fixed to both ends of the main body. A central through-hole is provided on the front end plate. A mounting plate is fixedly installed inside the housing, with its front end passing through the central through-hole on the front end plate. An attitude sensor is installed inside the housing, fixedly mounted on the front of the mounting plate near the rear end plate. The linear guide rail is fixedly mounted on the front of the mounting plate, located in front of the attitude sensor, with its direction aligned with the line connecting the front and rear end plates. A cylinder is fixedly mounted on the front of the mounting plate via a cylinder bracket, located to one side of the attitude sensor and guide rail, with its cylinder rod extending in the same direction as the line connecting the centers of the front and rear end plates. A control board is installed inside the housing, fixedly mounted on the back of the mounting plate. A distance sensor is fixedly mounted on the back of the mounting plate via a sensor bracket, near the front end of the mounting plate.

[0007] The connecting frame is L-shaped, with its long side fixedly connected to the slider of the linear guide pair, and its short side fixedly connected to the cylinder rod end of the cylinder through a floating joint; the power output plate is arranged parallel to the front side of the head end plate, the rear end of the power output plate is fixedly connected to the short side of the connecting frame, and the front end of the power output plate is the grinding end.

[0008] Two air pipe connectors are fixedly installed on the side wall of the main body of the housing. The inner ends of the two air pipe connectors are connected to the air inlet and air outlet of the cylinder respectively through pipes. The outer ends of the two air pipe connectors are connected to the air source through external pipes. A reversing solenoid valve and a gas proportional valve are connected to the external pipes. An electrical connector is fixedly installed on the side wall of the main body of the housing. The inner end of the electrical connector is electrically connected to the control board. The attitude sensor and distance sensor are electrically connected to the control board.

[0009] A fixing ring is fixedly installed on the front side of the head plate. The corrugated protective sleeve is fitted over the mounting plate, linear guide pair, connecting frame, and distance sensor. The tail end of the corrugated protective sleeve is fixedly connected to the fixing ring, and the head end of the corrugated protective sleeve is fixedly connected to the rear side of the power output disc.

[0010] Furthermore, it also includes a gear seat and a slide rule; the gear seat is disposed outside the corrugated protective sleeve, and the rear end of the gear seat is fixedly connected to the front side of the head end plate. A guide groove is provided on the gear seat, and the guide groove is arranged in the same direction as the extension and retraction direction of the cylinder rod. Scale lines are marked on both sides of the guide groove; the slide rule is a long strip ruler, the front end of the slide rule is fixedly connected to the edge of the power output disc, and the rear end of the slide rule is inserted into the guide groove on the gear seat in a clearance fit manner, and a pointer is provided at the rear end of the slide rule.

[0011] Furthermore, it also includes a tailstock, which is integrally formed with the tail end plate; the tailstock consists of a transition cylinder connected to the tail end plate, a flange connecting the transition cylinder, and a cylindrical positioning platform connecting the flange; a connection hole is provided on the edge of the flange, and the connection port is an open hole.

[0012] The advantages and positive effects of this utility model are as follows:

[0013] 1. This utility model places large-volume pneumatic control components such as gas proportional valves and reversing solenoid valves outside the force control mechanism housing, which can significantly reduce the space occupied inside the housing. This allows for the miniaturization and weight reduction of the main body of the force control mechanism (excluding the solenoid reversing valve and gas proportional valve), thus meeting the requirements for operation in confined spaces.

[0014] 2. The present invention adopts a rectangular box shape for the rear and a cylindrical corrugated protective sleeve for the front. This facilitates the reasonable arrangement and installation of the internal structural components of the box and meets the floating requirements of the power output disc.

[0015] 3. This utility model has a tail seat at the rear end of the box. The tail seat adopts a flange structure, which facilitates the connection and fixation of the force control mechanism and the mechanical arm set for grinding, and has the advantage of convenient installation.

[0016] 4. The corrugated protective sleeve of this utility model is equipped with a floating measurement structure consisting of a toothed seat and a sliding ruler on the outside. The floating stroke of the force control mechanism can be directly observed during the grinding process, and the floating stroke can be used to determine whether the force control mechanism is in normal working condition. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model. Detailed Implementation

[0019] The structure of this utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0020] A lightweight force control mechanism, please see Figures 1-2 The invention comprises a housing 3, a tailstock 1, a power output disc 5, a mounting plate 15, a linear guide pair 10, a connecting frame 11, a cylinder 9, an attitude sensor 16, a control board 14, a distance sensor 12, a gear seat 7, a slide ruler 6, a corrugated protective sleeve 4, a reversing solenoid valve, and a gas proportional valve. The reversing solenoid valve and the gas proportional valve are not shown in the attached drawings.

[0021] The box body is rectangular in shape and consists of a main body and a front end plate 3.2 and a rear end plate 3.1 fixed to both ends of the main body. A central through hole is provided on the front end plate.

[0022] The mounting plate is placed inside the box, and the two sides of the mounting plate are fixedly connected to the two side walls of the box body by screws. The front end of the mounting plate passes through the central through hole on the end plate.

[0023] The attitude sensor is housed within the housing and is fixedly mounted on the front of the mounting plate near the tail end plate. The linear guide rail is fixedly mounted on the front of the mounting plate, located in front of the attitude sensor, and its direction aligns with the line connecting the head and tail end plates. The cylinder is fixedly mounted on the front of the mounting plate via a cylinder bracket, located to one side of the attitude sensor and guide rail, and its cylinder rod's extension / retraction direction aligns with the line connecting the centers of the head and tail end plates. The control board is housed within the housing and fixedly mounted on the back of the mounting plate. The distance sensor is fixedly mounted on the back of the mounting plate near the front end via a sensor bracket.

[0024] The connecting frame is L-shaped, with its long side fixedly connected to the slider of the linear guide pair, and its short side fixedly connected perpendicularly to the cylinder rod end of the cylinder via a floating joint. The power output plate is arranged parallel to the front side of the head end plate, with its rear end fixedly connected to the short side of the connecting frame, and its front end serving as the grinding tool mounting end.

[0025] A fixing ring 13 is fixedly installed on the front side of the first end plate. The corrugated protective sleeve is fitted over the outside of the mounting plate, linear guide pair, connecting frame, and distance sensor. The tail end of the corrugated protective sleeve is fixedly connected to the fixing ring by screws, and the head end of the corrugated protective sleeve is fixedly connected to the rear side of the power output disc by screws.

[0026] The gear seat is located outside the corrugated protective sleeve. The rear end of the gear seat is fixedly connected to the front side of the head end plate. A guide groove is provided on the gear seat, and the guide groove is arranged in the same direction as the extension and retraction direction of the cylinder rod. Scale lines are marked on both sides of the guide groove. The slide ruler is a long strip ruler. The front end of the slide ruler is fixedly connected to the edge of the power output disc by screws. The rear end of the slide ruler is inserted into the guide groove on the gear seat with a clearance fit. A pointer 6.1 is provided at the rear end of the slide ruler. The pointer may be, but is not limited to, the raised diamond shape shown in the attached figure.

[0027] The tailstock is located on the rear side of the tail end plate. The tailstock can be integrally formed with the tail end plate, or it can be a separate structure, fixed to the corresponding end with screws. In this invention, the tailstock and tail end plate are preferably integrally formed. The tailstock consists of a transition cylinder connected to the tail end plate, a flange connecting the transition cylinder, and a cylindrical positioning platform connecting the flange. A connection hole is provided on the edge of the flange; the connection port can be the opening shown in the attached drawing, for installing screws and connecting to the end of the force-controlled grinding robotic arm.

[0028] Two air pipe connectors 2 are fixedly installed on the side wall of the main body of the aforementioned housing. The inner ends of the two air pipe connectors are connected to the air inlet and air outlet of the cylinder respectively through pipelines. The outer ends of the two air pipe connectors are connected to the air source through external pipelines, and a reversing solenoid valve and a gas proportional valve are connected to the external pipelines.

[0029] An electrical connector 8 (aviation plug) is fixedly installed on the side wall of the main body of the aforementioned housing, and the inner end of the electrical connector is electrically connected to the control board; the attitude sensor and the distance sensor are electrically connected to the control board.

[0030] The working principle of this lightweight force control mechanism is as follows:

[0031] The grinder is fixedly installed at the front end of the power output plate to form a force-controlled grinding mechanism. The grinding mechanism is driven by a robotic arm to grind the surface of the workpiece. During the grinding process, the attitude sensor and distance sensor can detect the position and attitude of the current mechanism in real time and feed the position and attitude information back to the control system built into the control board. The control system outputs control signals in real time. The control signals are used to control the gas to control the gas pressure and flow rate, thereby accurately controlling the output force of the drive mechanism. The slider drives the power output plate and the grinder to float axially, so as to achieve constant force grinding on the surface of the workpiece.

[0032] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A lightweight force control mechanism for workpiece grinding, comprising a housing, a power output plate, a mounting plate, a linear guide pair, a connecting frame, a cylinder, an attitude sensor, a control board, a distance sensor, a corrugated protective sleeve, a reversing solenoid valve, and a gas proportional valve; characterized in that: The housing is generally rectangular in shape, consisting of a main body and front and rear end plates fixed to both ends of the main body. A central through hole is provided on the front end plate. The mounting plate is fixedly installed inside the housing, with its front end passing through the central through hole on the front end plate. The attitude sensor is installed inside the housing and is fixedly mounted on the front of the mounting plate near the rear end plate. The linear guide rail is fixedly mounted on the front of the mounting plate and located in front of the attitude sensor. The direction of the guide rail is consistent with the direction of the line connecting the front and rear end plates. The cylinder is fixedly mounted on the front of the mounting plate via a cylinder bracket and located on one side of the attitude sensor and the guide rail. The extension and retraction direction of the cylinder rod is consistent with the direction of the line connecting the centers of the front and rear end plates. The control board is installed inside the housing and is fixedly mounted on the back of the mounting plate. The distance sensor is fixedly mounted on the back of the mounting plate near the front end via a sensor bracket. The connecting frame is L-shaped, with its long side fixedly connected to the slider of the linear guide pair, and its short side fixedly connected to the cylinder rod end of the cylinder through a floating joint; the power output plate is arranged parallel to the front side of the head end plate, the rear end of the power output plate is fixedly connected to the short side of the connecting frame, and the front end of the power output plate is the grinding end. Two air pipe connectors are fixedly installed on the side wall of the main body of the housing. The inner ends of the two air pipe connectors are connected to the air inlet and air outlet of the cylinder respectively through pipes. The outer ends of the two air pipe connectors are connected to the air source through external pipes. A reversing solenoid valve and a gas proportional valve are connected to the external pipes. An electrical connector is fixedly installed on the side wall of the main body of the housing. The inner end of the electrical connector is electrically connected to the control board. The attitude sensor and distance sensor are electrically connected to the control board. A fixing ring is fixedly installed on the front side of the head plate. The corrugated protective sleeve is fitted over the mounting plate, linear guide pair, connecting frame, and distance sensor. The tail end of the corrugated protective sleeve is fixedly connected to the fixing ring, and the head end of the corrugated protective sleeve is fixedly connected to the rear side of the power output disc.

2. The lightweight force control mechanism for workpiece grinding according to claim 1, characterized in that: It also includes a gear seat and a slide rule; the gear seat is disposed outside the corrugated protective sleeve, and the rear end of the gear seat is fixedly connected to the front side of the head end plate. A guide groove is provided on the gear seat, and the guide groove is arranged in the same direction as the extension and retraction direction of the cylinder rod. Scale lines are marked on both sides of the guide groove; the slide rule is a long strip ruler, the front end of the slide rule is fixedly connected to the edge of the power output plate, and the rear end of the slide rule is inserted into the guide groove on the gear seat in a clearance fit manner. A pointer is provided at the rear end of the slide rule.

3. The lightweight force control mechanism for workpiece grinding according to claim 1, characterized in that: It also includes a tailstock, which is integrally formed with the tail end plate; the tailstock consists of a transition cylinder connected to the tail end plate, a flange connecting the transition cylinder, and a cylindrical positioning platform connecting the flange; a connection hole is provided on the edge of the flange, and the connection port is an open hole.

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