An automatic polishing apparatus for a mounting surface of a structural member

Abstract

The application discloses a kind of structural member mounting surface automatic grinding equipment, including bottom plate and top plate, stepper motor driver is provided on bottom plate and X-axis linear displacement translation guide rail, Y-axis linear displacement translation guide rail is provided on X-axis linear displacement translation guide rail, electric rotary table is provided on Y-axis linear displacement translation guide rail, cast iron grinding table is provided on electric rotary table, counterweight is provided above cast iron grinding table, the top plate is provided with the circular opening opposite cast iron grinding table, the opening edge is provided with the radial limit slot;The application is set to stepper motor driver and electric rotary table, without manual intervention in the whole process implementation process, can effectively improve the high-efficiency grinding of special-shaped structural member mounting surface, reduce the operation time of process, reduce the labor intensity of production personnel, also reduces the requirement to personnel quality.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of optical component processing, and particularly relates to an automatic polishing device for mounting surfaces of structural components. BACKGROUND

[0002] In the assembly process of a precise optical-mechanical system, the flatness and roughness of the mounting surfaces of structural components will affect the stress distribution, heat dissipation efficiency and temperature uniformity of the optical-mechanical system, thereby affecting the dynamic performance of the optical-mechanical system in the full temperature range. In order to minimize the influence of the mounting surfaces on the optical-mechanical system, eliminate local stress, improve assembly consistency and ensure the performance of the system after assembly, the mounting surfaces of the structural components need to be finely polished.

[0003] A common polishing method is to apply a layer of diamond polishing paste on the mounting surface of a workpiece, and an operator holds a special cast iron block and reciprocally pushes the polishing block to make the cast iron block and the mounting surface of the workpiece slide in contact, thereby generating a polishing effect. However, this method has the following disadvantages: 1) one person can only polish one mounting surface at the same time, and the efficiency is low; 2) the angle of polishing needs to be controlled manually to ensure that the angle of the mounting surface meets the requirements of the drawing, and the skill level of the operator is required to be high. SUMMARY

[0004] The present application provides a low-cost automatic polishing tool for mounting surfaces of structural components to overcome the shortcomings of the prior art.

[0005] The technical scheme adopted by the present application to solve the technical problems is as follows: an automatic polishing device for mounting surfaces of structural components, comprising a bottom plate and a top plate arranged in parallel above the bottom plate through support columns, wherein the bottom plate is provided with a stepper motor driver and an X-axis linear displacement translation guide connected with the stepper motor driver, the X-axis linear displacement translation guide is provided with a Y-axis linear displacement translation guide, the Y-axis linear displacement translation guide is provided with an electric rotary table, the X-axis linear displacement translation guide or / and the Y-axis linear displacement translation guide is provided with a position sensor, the electric rotary table is provided with a cast iron polishing table, and a counterweight is arranged above the cast iron polishing table; the top plate is provided with a circular opening opposite to the cast iron polishing table, and a radial limiting slot is arranged at the edge of the opening.

[0006] The automatic polishing device for mounting surfaces of structural components has a 28-step stepper motor for the stepper motor driver, and the X-axis linear displacement translation guide and the Y-axis linear displacement translation guide adopt cross roller guides.

[0007] The automatic polishing device for mounting surfaces of structural components has a 42-step stepper motor for the electric rotary table, which is driven through a worm and gear structure.

[0008] The counterweight is a cylinder processed from a cast iron block.

[0009] The position sensor of the structural member mounting surface automatic grinding device is an Omron photoelectric sensor.

[0010] The present application has the beneficial effects that: the movement trajectory of the X-axis linear displacement translation guide rail, the Y-axis linear displacement translation guide rail and the electric rotary table realizes the relative sliding of the workpiece to be ground and the grinding table, so that the workpiece mounting surface is effectively ground, through the setting of the stepping motor driver and the electric rotary table, manual intervention is not needed in the whole process implementation process, the high-efficiency grinding of the mounting surface of the special-shaped structural member can be effectively improved, the operation time of the process is reduced, the labor intensity of the production personnel is reduced, meanwhile, the requirement for the personnel quality is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The present application has the beneficial effects that: the movement trajectory of the X-axis linear displacement translation guide rail, the Y-axis linear displacement translation guide rail and the electric rotary table realizes the relative sliding of the workpiece to be ground and the grinding table, so that the workpiece mounting surface is effectively ground, through the setting of the stepping motor driver and the electric rotary table, manual intervention is not needed in the whole process implementation process, the high-efficiency grinding of the mounting surface of the special-shaped structural member can be effectively improved, the operation time of the process is reduced, the labor intensity of the production personnel is reduced, meanwhile, the requirement for the personnel quality is also reduced.

[0012] The reference signs are: 11 - bottom plate, 12 - top plate, 13 - support column, 20 - stepping motor driver, 21 - X-axis linear displacement translation guide rail, 22 - Y-axis linear displacement translation guide rail, 23 - electric rotary table, 24 - cast iron grinding table, 3 - limiting clamping groove, 4 - counterweight. DETAILED DESCRIPTION

[0013] In order to further explain the purpose and technical scheme of the present application, the present application will be further described in detail below by combining the specific embodiments of the accompanying drawings. The following embodiments are only used to explain the present application, and do not constitute the limitation to the present application.

[0014] REFERENCE Figure 1The application discloses a kind of structural member mounting surface automatic grinding equipment, including bottom plate 11 and top plate 12 being arranged in parallel on the bottom plate 11 by support column 13, the bottom plate 11 is provided with stepper motor driver 20 and X-axis linear displacement translation guide rail 21 connected with stepper motor driver 20, X-axis linear displacement translation guide rail 21 is provided with Y-axis linear displacement translation guide rail 22, Y-axis linear displacement translation guide rail 22 is provided with electric rotary table 23, electric rotary table 23 uses 42 step stepper motor, is driven by worm gear structure, center carries maximum 100kg, maximum speed is 50 ° / s, repeat positioning accuracy 0.005 °, absolute positioning accuracy 0.01 °, end face run-out <5 μ, parallelism 10 μ, stepper motor is connected 24V power supply and control machine case, X-axis linear displacement translation guide rail 21 and Y-axis linear displacement translation guide rail 22 use cross roller guide, ensure that its ability can bear heavy load, also ensure its displacement accuracy, straightness and flatness in horizontal direction.The maximum carrying capacity of the guide rail is 100kg, and the positioning accuracy can reach 2 μ.The position sensor is an Omron photoelectric sensor, and the working principle is to detect the position of the metal sheet on the X-axis linear displacement translation guide rail 21 or the Y-axis linear displacement translation guide rail 22.When the metal sheet reaches the specified position, the sensor outputs an electrical level signal, which can quickly help the electric linear displacement translation guide rail return to the initial origin.The cast iron grinding table 24 is provided on the electric rotary table 23, and is specially designed and processed according to the position structure of the workpiece mounting surface to be machined.The mounting surface of the structural member to be machined is completely attached to the grinding surface of the cast iron grinding table 24, and a position space for grinding sliding is reserved, so that high-efficiency grinding of multiple mounting surfaces of special-shaped structural members can be completed in the shortest time.The counterweight 4 is provided above the cast iron grinding table 24, and is a cylindrical metal block with a weight of 5kg.The cast iron block is placed above the structural member to be machined, and is used to compact the structural member and the cast iron grinding table 24.The grinding surface and the diamond polishing paste are in full contact during grinding, which improves the grinding efficiency.The top plate 12 is provided with a circular opening opposite the cast iron grinding table 24, and the edge of the opening is provided with a radial limiting slot 3.The limiting slot 3 is specially designed and processed, and its shape matches the outer dimensions of the structural member to be machined.The structure of the boss or limiting groove on the slot enables the structural member to be placed in the slot without deviation or rotation.

[0015] The patent grinding device can be connected with a programmable control panel. The controller of the linear displacement translation guide rail and the electric rotary table 23 is controlled through the programmable control panel. The control panel has a fast motion speed limit of 9000 mm / min, a maximum pulse output frequency of 150 KHz, and can control up to 4-axis motion (X / Y / Z / C) at the same time. The programmable control panel can realize automatic, manual, program, parameter, IO and other functions.

[0016] The whole grinding process steps are as follows:

[0017] 1) Uniformly point 5um diamond grinding paste on the grinding surface.

[0018] 2) Place the workpiece to be ground on the cast iron grinding table 24, and place the counterweight above the workpiece and press it tightly.

[0019] 3) The programmable control panel selects the corresponding control program, and grinds at a speed of 0.2mm / s of the X-axis linear displacement translation guide rail 21 and the Y-axis linear displacement translation guide rail 22, and 5 revolutions per minute of the C-axis electric rotary table 23, for a total of 20 minutes.

[0020] 4) After grinding, the counterweight 4 and the workpiece are taken off in turn.

[0021] Use the profilometer to detect the installation surface of the ground workpiece. The roughness of the installation surface is less than 0.085um. It meets the process requirements.

[0022] Those skilled in the art can easily understand that the above description is only a preferred use case of the present application, and is not used to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic grinding device for the mounting surface of structural components, characterized in that: The system includes a base plate (11) and a top plate (12) arranged parallel to the base plate (11) via support columns (13). The base plate (11) is equipped with a stepper motor driver (20) and an X-axis linear displacement guide rail (21) connected to the stepper motor driver (20). A Y-axis linear displacement guide rail (22) is provided on the X-axis linear displacement guide rail (21). The stepper motor driver (20) is a 28-step stepper motor. The X-axis linear displacement guide rail (21) and the Y-axis linear displacement guide rail (22) are cross roller guides. An electric rotary table (23) is provided on the Y-axis linear displacement guide rail (22). The turntable (23) is driven by a 42-step stepper motor and a worm gear structure. Photoelectric position sensors are installed on the X-axis linear displacement guide rail (21) or / and the Y-axis linear displacement guide rail (22). A cast iron grinding table (24) is installed on the electric turntable (23). A cast iron cylindrical counterweight (4) is installed above the cast iron grinding table (24) to press the structural parts against the cast iron grinding table (24). A circular opening is provided on the top plate (12) facing the cast iron grinding table (24). A radial limiting groove (3) with a shape that fits the structural parts is provided at the edge of the circular opening. The boss or limiting groove prevents the structural parts in the groove from shifting or rotating.

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