A clamping fixture for preventing deformation of circular plastic profiles in CNC machining

Abstract

This utility model relates to a clamping fixture for preventing deformation of circular plastic profiles in CNC machining. It includes a fixed plate and a mandrel. One end of the mandrel is mounted on the fixed plate, and the other end is disposed inside the circular plastic profile. The fixed plate has a positioning groove adapted to a pre-machined boss on the circular plastic profile. This utility model provides a secure clamping solution without causing deformation or indentation, and can be used for large plastic profiles of various sizes and shapes.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining, specifically a clamping fixture for preventing deformation of circular plastic profiles during CNC machining. Background Technology

[0002] Clamping round plastic profiles is a critical issue in CNC lathe machining. Because plastic is relatively soft, and round profiles need to remain coaxial and concentric during machining, clamping must ensure the profile remains stable while avoiding deformation or indentations. Currently, traditional clamping methods often fail to meet both requirements simultaneously. Clamping too tightly can cause product deformation or even leave clamping marks, affecting the product's appearance and performance; while clamping too loosely leads to inaccurate machining, impacting processing quality and efficiency. Utility Model Content

[0003] The present invention aims to overcome the defects of the prior art and provide a clamping fixture for preventing deformation of circular plastic profiles in CNC machining, thereby solving the problem of difficult clamping of circular plastic profiles.

[0004] To solve the above-mentioned technical problems, this utility model is implemented as follows:

[0005] A clamping fixture for preventing deformation of circular plastic profiles in CNC machining is characterized in that: it includes a fixed plate and a mandrel, one end of the mandrel is mounted on the fixed plate, and the other end of the mandrel is located inside the circular plastic profile, and the fixed plate is provided with a positioning groove that matches the pre-processed boss of the circular plastic profile.

[0006] The clamping fixture for preventing deformation of circular plastic profiles in CNC machining is characterized in that: the mandrel is installed on the fixed plate by means of threaded connection, snap-fit ​​connection, plug-in fit or detachable fastener connection.

[0007] The clamping fixture for preventing deformation of circular plastic profiles in CNC machining is characterized in that: it further includes double-sided adhesive, and the surface of the fixing plate is provided with an adhesive area for sticking the double-sided adhesive, and the shape and size of the adhesive area match the bottom surface of the circular plastic profile.

[0008] The clamping fixture for preventing deformation of circular plastic profiles in CNC machining is characterized in that: the fixing plate is made of PVC or other plastic materials with high hardness.

[0009] The clamping fixture for preventing deformation of circular plastic profiles in CNC machining is characterized in that: the number and shape of the positioning grooves are designed according to the pre-processed bosses of the circular plastic profiles to ensure that the circular plastic profiles can be accurately and stably positioned on the fixed plate.

[0010] The beneficial effects of this utility model are as follows: As can be seen from the above technical solution, this application provides a clamping fixture for preventing deformation of circular plastic profiles in CNC machining. A mandrel is introduced as the rotation center to ensure that the circular plastic profile remains coaxial and concentric during machining. This not only improves machining accuracy but also avoids machining errors caused by unstable profile rotation.

[0011] This application describes a mounting plate used to support and position circular plastic profiles. Using PVC or other high-hardness plastic materials to make the mounting plate ensures it has sufficient rigidity and wear resistance, preventing deformation or damage during processing. During the pre-processing stage of the circular plastic profile, a boss that matches the positioning groove is designed and machined. This allows the boss to accurately insert into the positioning groove when the profile is placed on the fixture, achieving precise positioning of the profile.

[0012] A double-sided adhesive area is set up on the mounting plate, and the circular plastic profile is adhered to the mounting plate using Nitto 523N double-sided adhesive. Nitto 523N double-sided adhesive has strong adhesion and temperature resistance, ensuring that the profile will not detach or move due to vibration or impact during processing. At the same time, because the double-sided adhesive covers a large and evenly distributed area, it avoids causing localized indentations on the profile surface.

[0013] This invention effectively solves the problems of easy deformation of circular plastic profiles, low processing accuracy, and complex operation in traditional clamping methods. It not only has high versatility and adaptability, applicable to circular plastic profiles of different specifications and shapes, but also is simple to operate and low in cost, making it of significant practical application value. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0015] Figure 1 This is a schematic diagram of the structure of this application. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0017] like Figure 1As shown: A clamping fixture for preventing deformation of circular plastic profiles in CNC machining includes a fixed plate 1 and a mandrel 2. One end of the mandrel is mounted on the fixed plate, and the other end of the mandrel is located inside the circular plastic profile. The fixed plate is provided with a positioning groove 5 that is adapted to the pre-processed boss of the circular plastic profile.

[0018] The mandrel is mounted on the fixed plate by means of threaded connection, snap-fit ​​connection, plug-in connection or detachable fastener connection.

[0019] It also includes Nitto 523N double-sided tape 4, the surface of the fixing plate is provided with a pasting area for pasting the double-sided tape, and the shape and size of the pasting area match the bottom surface of the circular plastic profile 3.

[0020] The fixing plate is made of PVC or other plastic materials with high hardness.

[0021] The number and shape of the positioning grooves are designed according to the pre-processed bosses of the circular plastic profile to ensure that the circular plastic profile can be accurately and stably positioned on the fixing plate.

[0022] The specific steps are as follows:

[0023] First, place the round plastic profile on the fixing plate, ensuring that its pre-machined boss matches the positioning groove on the fixing plate.

[0024] Then, use Nitto 523N double-sided tape to further secure the round plastic profile to the mounting plate to ensure a tight clamping and avoid leaving clamp marks or causing deformation on the product surface.

[0025] Finally, the mandrel is connected to the fixed plate by a connecting structure to ensure that the circular plastic profile is coaxial and concentric during rotary processing.

[0026] When machining on a CNC lathe, the clamped circular plastic profile is placed into the lathe, and the lathe parameters are adjusted according to the machining requirements. Thanks to the mandrel and the fixed plate, the circular plastic profile maintains stability and accuracy during machining, avoiding problems such as clamping deformation and inaccurate machining.

[0027] After processing, the pre-processed bosses for positioning and shaping of the round plastic profile can be easily removed without affecting the overall shape, size, and aesthetics of the product.

[0028] The clamping fixture provided in this embodiment has a simple structure and is easy to operate, effectively solving the problems of difficulty in clamping and easy deformation of large plastic parts during lathe finishing. At the same time, this clamping fixture also has versatility and flexibility, and can adapt to the processing needs of circular plastic profiles of different sizes and shapes.

[0029] The above are merely embodiments provided in this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping fixture for preventing deformation of circular plastic profiles during CNC machining, characterized in that: It includes a fixed plate and a mandrel. One end of the mandrel is mounted on the fixed plate, and the other end of the mandrel is located inside a circular plastic profile. The fixed plate is provided with a positioning groove that matches the pre-processed boss of the circular plastic profile.

2. The clamping fixture for preventing deformation of circular plastic profiles in CNC machining according to claim 1, characterized in that: The mandrel is mounted on the fixed plate by means of threaded connection, snap-fit ​​connection, plug-in connection or detachable fastener connection.

3. The clamping fixture for preventing deformation of circular plastic profiles in CNC machining according to claim 1, characterized in that: It also includes double-sided adhesive, and the surface of the fixing plate is provided with an adhesive area for sticking the double-sided adhesive, and the shape and size of the adhesive area match the bottom surface of the circular plastic profile.

4. A clamping fixture for preventing deformation of circular plastic profiles in CNC machining according to claim 1, characterized in that: The mounting plate is made of PVC.

5. A clamping fixture for preventing deformation of circular plastic profiles in CNC machining according to claim 1, characterized in that: The number and shape of the positioning grooves are designed according to the pre-processed bosses of the circular plastic profile to ensure that the circular plastic profile can be accurately and stably positioned on the fixing plate.

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