High-precision limiting mechanism for aluminum profile cutting machining

Abstract

The utility model belongs to the technical field of profile machining, and particularly relates to a high-precision limiting mechanism for aluminum profile cutting machining. A width limiting assembly used for clamping the left side wall and the right side wall of a workpiece and a length limiting assembly used for blocking the front end of the workpiece are arranged on a clamping table of a cutting machine; the angle limiting assembly is used for rotationally adjusting the horizontal angle of the workpiece; the width limiting assembly comprises a positive and negative tooth two-way lead screw and a pair of clamping blocks arranged on the lead screw in an opening and closing mode. The length limiting assembly comprises an extending guide rod fixedly connected to the front portion of the clamping table and a limiting block arranged above the extending guide rod in a sliding mode. The angle limiting assembly comprises an annular tooth surface fixedly arranged on the circumferential edge of the lower surface of the clamping table and a driving gear used for driving the clamping table to rotate, and the driving gear is in meshing transmission with the annular tooth surface. According to the limiting mechanism, the accuracy of the blanking length and the beveling angle of the profile can be improved, so that the assembled door and window frame is tightly seamed.

Description

Technical Field

[0001] The utility model belongs to the technical field of profile processing, and in particular relates to a high-precision limiting mechanism for aluminum profile cutting. Background Art

[0002] Profile refers to a frame material with a certain geometric shape of cross section made of metal or plastic through rolling, extrusion, casting and other processes. Among them, aluminum profile is more common and is mainly used to manufacture main support structures such as door and window frames or equipment skeletons. Before using aluminum profiles, it is generally necessary to use a cutting machine to cut them into a specific length. For example, when manufacturing door and window frames, it is even necessary to cut a certain angle of bevel at the corners of the doors and windows to facilitate the docking of the corners of the profiles. Most profile cutting machines use a downward pressure grinding wheel cutting machine, which mainly includes a machine base, a clamping table and a cutting head. During processing, the profile is first placed on the clamping table above the machine base. After clamping and limiting, the grinding wheel cutting head is slowly pressed down to cut the profile. The existing profile cutting machine clamping table structure is relatively simple, and the limiting accuracy after the profile is clamped is not high, resulting in the profile length and bevel angle of the cut material being not accurate enough, which in turn causes the joint gap of the assembled door and window frames to be too large, affecting the stability and aesthetics of the door and window frame structure. Utility Model Content

[0003] In view of the above situation, the utility model provides a high-precision limit mechanism for cutting aluminum profiles, which can improve the accuracy of the cutting length and groove angle of the cut profiles.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A high-precision limiting mechanism for aluminum profile cutting processing comprises a machine base, a clamping table and a cutting head. The clamping table can be rotatably arranged above the machine base for clamping and limiting the workpiece to be cut. The cutting head can be raised and lowered and suspended above the clamping table. The clamping table is provided with a width limiting component for clamping the left and right side walls of the workpiece, a length limiting component for blocking the front end of the workpiece, and an angle limiting component for rotating and adjusting the horizontal angle of the workpiece.

[0006] The width limiting assembly includes two sets of clamping devices arranged in parallel at the front and rear of the clamping table. Each set of clamping devices includes a pair of clamping blocks that can be opened and closed and symmetrically arranged on the left and right sides of the workpiece, and a forward and reverse bidirectional screw rod for driving the two clamping blocks to tighten or loosen.

[0007] The length limiting assembly comprises an extension guide rod fixedly connected to the front of the clamping platform along the front-back direction, and a limiting block slidably arranged above the extension guide rod, and the limiting block is located directly in front of the front end of the workpiece.

[0008] The angle limiting assembly comprises an annular tooth surface fixedly arranged on the circumferential edge of the lower surface of the clamping platform, and a driving gear for driving the clamping platform to rotate, and the driving gear is meshed with the annular tooth surface for transmission.

[0009] Furthermore, forward threads and reverse threads are respectively arranged on the outer walls at both ends of the forward and reverse bidirectional screw rod, and threaded sleeves are respectively provided at both ends of the forward and reverse bidirectional screw rod, and the two clamping blocks of the same group of clamping devices are correspondingly connected to the two threaded sleeves on the same forward and reverse bidirectional screw rod.

[0010] Furthermore, the front and rear parts of the clamping platform are respectively provided with two linear grooves in the left and right directions, and two positive and negative bidirectional screw rods are correspondingly and movably embedded in the two linear grooves. The two ends of the positive and negative bidirectional screw rods are rotatably connected to the clamping platform through rolling bearings, and synchronous wheels are respectively fixed on the right ends of the two positive and negative bidirectional screw rods, and a synchronous belt is wound around the two synchronous wheels. A clamping handwheel is also provided on one of the positive and negative bidirectional screw rods.

[0011] Furthermore, a width scale is provided on one side of the two straight grooves to indicate the distance between the two clamping blocks of the same set of clamping devices. Horizontal laser lights and middle marking lines are respectively provided on the two clamping blocks corresponding to the front and rear of the two sets of clamping devices to indicate the straightness of the workpiece along the front and rear directions.

[0012] Furthermore, a gear groove for accommodating the driving gear is provided on the clamping table, and an adjusting wheel shaft is coaxially fixed to the center of the driving gear. Both ends of the adjusting wheel shaft are rotatably connected to the clamping table through rotating bearings, and one end of the adjusting wheel shaft is through a hole extending to the outside of the clamping table, and a rotating handwheel is also provided on the protruding end of the adjusting wheel shaft.

[0013] Furthermore, an arc-shaped angle scale is arranged on the machine base outside the clamping table, and an angle pointer is fixedly arranged on the side wall of the clamping table for cooperating with the angle scale to indicate the rotation angle of the clamping table.

[0014] Furthermore, the extension guide rod is made of a hollow square tube, and an adjustment slot extending in the front-to-back direction is provided on the upper side of the extension guide rod, and the bottom of the limit block can be loosely connected to the adjustment slot through an adjustment bolt, and a length scale is provided on one side of the adjustment slot to indicate the locking position of the limit block on the extension guide rod. Preferably, two adjustment bolts are provided to prevent the limit block from rotating or moving.

[0015] Furthermore, a support frame is vertically arranged above the machine base, and a lifting swing arm is rotatably hinged at the top of the support frame, and the cutting head is installed at the swing end of the lifting swing arm; the cutting head includes a protective cover, a cutting blade, an operating handle and a cutting motor, the protective cover is fixedly connected to the lifting swing arm, the cutting motor is fixedly installed on the outside of the protective cover, the motor shaft of the cutting motor is through-hole extended into the inside of the protective cover, the cutting blade is placed in the protective cover, and is detachably installed on the motor shaft of the cutting motor, and the operating handle is fixedly connected to the protective cover.

[0016] Furthermore, the clamping table is a horizontally arranged disc-shaped structure, and a rotating shaft is coaxially fixed to the central part of the lower surface of the clamping table. The upper surface of the machine base is provided with a rotating shaft groove, and the rotating shaft can be rotatably embedded in the rotating shaft groove through a rotating bearing; a circular storage groove is coaxially provided at the central part of the upper surface of the clamping table, which is used for cutting and making way when the cutting head is pressed down and for collecting and accommodating cutting debris, and a cleaning notch for cleaning the cutting debris is connected to the left side of the storage groove.

[0017] The utility model also includes other components that enable it to be used normally, which are all conventional means in the field. In addition, devices or components not limited in the utility model, such as: the base of the cutting machine, the protective cover, the cutting blade, the cutting motor, the operating handle, as well as the forward and reverse bidirectional screw rod, the threaded sleeve, the horizontal laser light, etc., all adopt the existing technology in the field.

[0018] The beneficial effects of the utility model are as follows:

[0019] The high-precision limit mechanism for aluminum profile cutting provided by the utility model can greatly improve the accuracy of profile cutting length and bevel angle, so that the joints of assembled door and window frames are tightly fitted, which helps to improve the stability and aesthetics of the door and window profile frame structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the high-precision limit mechanism for aluminum profile cutting in the embodiment.

[0021] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the lower surface of the middle clamping table. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, rather than all embodiments.

[0024] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and the like indicating directions or positional relationships are based on the accompanying drawings and are for the convenience of description only.

[0025] Example

[0026] like Figure 1-3 As shown, a high-precision limiting mechanism for aluminum profile cutting processing includes a machine base 1, a clamping table 2 and a cutting head. The clamping table can be rotatably arranged above the machine base to clamp and limit the workpiece 3 to be cut. The cutting head can be raised and lowered and suspended above the clamping table. The clamping table is provided with a width limiting component for clamping the left and right side walls of the workpiece, a length limiting component for blocking the front end of the workpiece, and an angle limiting component for rotating and adjusting the horizontal angle of the workpiece.

[0027] The width limiting assembly includes two sets of clamping devices arranged in parallel at the front and rear of the clamping table, each set of clamping devices includes a pair of clamping blocks 4 that can be opened and closed and symmetrically arranged on the left and right sides of the workpiece, and a forward and reverse bidirectional screw rod 5 for driving the two clamping blocks to tighten or loosen.

[0028] The length limiting assembly comprises an extension guide rod 6 fixedly connected to the front of the clamping platform along the front-back direction, and a limiting block 7 slidably arranged above the extension guide rod, and the limiting block is located directly in front of the front end of the workpiece.

[0029] The angle limiting assembly includes an annular tooth surface 8 fixedly arranged on the circumferential edge of the lower surface of the clamping platform, and a driving gear 9 for driving the clamping platform to rotate, and the driving gear is meshed with the annular tooth surface for transmission.

[0030] The outer walls at both ends of the forward and reverse bidirectional screw rod are respectively provided with forward threads and reverse threads, and the two ends of the forward and reverse bidirectional screw rod are respectively provided with threaded sleeves, and the two clamping blocks of the same clamping device are correspondingly connected with the two threaded sleeves on the same forward and reverse bidirectional screw rod. When the forward and reverse bidirectional screw rod rotates forward, the two corresponding clamping blocks simultaneously tighten and clamp the workpiece toward the middle; when the forward and reverse bidirectional screw rod rotates reversely, the two corresponding clamping blocks simultaneously retreat to both ends to loosen the workpiece.

[0031] The front and rear parts of the clamping platform are respectively provided with two linear grooves 10 in the left and right directions, and two positive and negative thread bidirectional screws are movably embedded in the two linear grooves. The two ends of the positive and negative thread bidirectional screws are rotatably connected to the clamping platform through rolling bearings 11, and the right ends of the two positive and negative thread bidirectional screws are respectively fixed with synchronous wheels 12, and a synchronous belt 13 is wound between the two synchronous wheels. A clamping handwheel 14 is also provided on one of the positive and negative thread bidirectional screws. A screw top screw 15 for preventing the positive and negative thread bidirectional screw from rotating is provided on the side wall of the clamping platform on one side of the positive and negative thread bidirectional screw, so as to ensure stable clamping of the workpiece and cutting accuracy.

[0032] A width scale 16 is provided on one side of the two straight grooves to indicate the distance between the two clamping blocks of the same set of clamping devices. A horizontal laser light 17 and a middle marking line 18 are provided on the two corresponding clamping blocks of the two sets of clamping devices to indicate the straightness of the workpiece in the front and rear directions. The horizontal laser light emits a straight visible light beam, and when it hits the middle marking line on the opposite side, it indicates that the front and rear clamping blocks are in one line, thereby ensuring that the workpiece is also straight in the front and rear directions.

[0033] The clamping table is provided with a gear groove 19 for accommodating the driving gear, and an adjusting wheel shaft 20 is coaxially fixed with the center of the driving gear. Both ends of the adjusting wheel shaft are rotatably connected to the clamping table through rotating bearings 21, and one end of the adjusting wheel shaft is through a hole extending to the outside of the clamping table, and a rotating handwheel 22 is also provided on the protruding end of the adjusting wheel shaft. A wheel shaft top screw 23 for preventing the adjusting wheel shaft from rotating is provided on the machine base directly above the adjusting wheel shaft, thereby ensuring the accuracy of the rotation angle of the clamping table and the workpiece.

[0034] An arc-shaped angle scale 24 is arranged on the base outside the clamping platform, and an angle pointer 25 is fixedly arranged on the side wall of the clamping platform to cooperate with the angle scale to indicate the rotation angle of the clamping platform. One end of the angle pointer is fixedly connected to the clamping platform, and the other end is provided with a triangular cone tip.

[0035] The extension guide rod is made of a hollow square tube, and an adjustment long hole 26 extending in the front-to-back direction is provided on the upper side of the extension guide rod. The bottom of the limit block can be loosely connected to the adjustment long hole through two adjustment bolts 27 to ensure the accuracy of the cutting length of the workpiece in the front-to-back extension direction. A length scale 28 is provided on one side of the adjustment long hole to indicate the locking position of the limit block on the extension guide rod.

[0036] A support frame 29 is vertically arranged above the machine base, and a lifting swing arm 30 is rotatably hinged on the top of the support frame, and the cutting head is installed at the swing end of the lifting swing arm.

[0037] The cutting head includes a protective cover 31, a cutting blade 32, an operating handle 33 and a cutting motor 34. The protective cover is fixedly connected to the lifting swing arm, the cutting motor is fixedly installed on the outside of the protective cover, the motor shaft of the cutting motor is through a hole and extends into the inside of the protective cover, the cutting blade is placed in the protective cover and can be detachably installed on the motor shaft of the cutting motor, and the operating handle is fixedly connected to the protective cover.

[0038] The clamping platform is a horizontally arranged disc-shaped structure, a rotating shaft 35 is coaxially fixedly connected to the center of the lower surface of the clamping platform, and a rotating shaft groove is formed on the upper surface of the base, and the rotating shaft is rotatably embedded in the rotating shaft groove through a rotating bearing 36.

[0039] A circular receiving groove 37 is coaxially provided at the center of the upper surface of the clamping table for making way for cutting when the cutting head is pressed down and collecting and accommodating cutting debris. A cleaning notch 38 for cleaning cutting debris is provided on the left side of the receiving groove. A cleaning brush can be used for cleaning the debris.

[0040] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to ordinary technicians in this technical field. Any technical deformation made within the spirit and principles of the present invention falls within the protection scope of the present invention.

Claims

1. A high-precision limit mechanism for aluminum profile cutting, comprising a machine base, a clamping table and a cutting head, characterized in that: The clamping table can be rotatably arranged above the machine base for clamping and limiting the workpiece. The cutting head can be raised and lowered and suspended above the clamping table. The clamping table is provided with a width limiting component for clamping the left and right side walls of the workpiece, a length limiting component for blocking the front end of the workpiece, and an angle limiting component for rotating and adjusting the horizontal angle of the workpiece. The width limiting assembly comprises two sets of clamping devices arranged in parallel at the front and rear of the clamping table, each set of clamping devices comprises a pair of clamping blocks which can be opened and closed and symmetrically arranged on the left and right sides of the workpiece, and a forward and reverse thread bidirectional screw rod for driving the two clamping blocks to tighten or loosen; The length limiting assembly includes an extension guide rod fixedly connected to the front of the clamping table along the front-back direction, and a limit block slidably arranged above the extension guide rod, and the limit block is located directly in front of the front end of the workpiece; The angle limiting assembly comprises an annular tooth surface fixedly arranged on the circumferential edge of the lower surface of the clamping platform, and a driving gear for driving the clamping platform to rotate, and the driving gear is meshed with the annular tooth surface for transmission.

2. The high-precision limiting mechanism for aluminum profile cutting according to claim 1 is characterized in that: The outer walls at both ends of the forward and reverse bidirectional screw rod are respectively provided with forward threads and reverse threads, and the two ends of the forward and reverse bidirectional screw rod are respectively provided with threaded sleeves, and the two clamping blocks of the same group of clamping devices are correspondingly connected with the two threaded sleeves on the same forward and reverse bidirectional screw rod.

3. The high-precision limiting mechanism for aluminum profile cutting according to claim 2 is characterized in that: The front and rear parts of the clamping platform are respectively provided with two linear grooves in the left and right directions, and two positive and negative bidirectional screw rods are correspondingly and movably embedded in the two linear grooves. The two ends of the positive and negative bidirectional screw rods are rotatably connected to the clamping platform through rolling bearings, and the right ends of the two positive and negative bidirectional screw rods are respectively fixed with synchronous wheels, and a synchronous belt is wound around the two synchronous wheels. A clamping handwheel is also provided on one of the positive and negative bidirectional screw rods.

4. The high-precision limiting mechanism for aluminum profile cutting according to claim 3 is characterized in that: A width scale is provided on one side of the two straight grooves to indicate the distance between the two clamping blocks of the same set of clamping devices. Horizontal laser lights and middle marking lines are provided on the two clamping blocks corresponding to the front and rear of the two sets of clamping devices to indicate the straightness of the workpiece along the front and rear directions.

5. The high-precision limiting mechanism for aluminum profile cutting according to claim 1 is characterized in that: The clamping platform is provided with a gear groove for accommodating the driving gear, and an adjusting wheel shaft is coaxially fixed to the center of the driving gear. Both ends of the adjusting wheel shaft are rotatably connected to the clamping platform through rotating bearings, and one end of the adjusting wheel shaft is through a hole extending to the outside of the clamping platform, and a rotating hand wheel is also provided on the protruding end of the adjusting wheel shaft.

6. The high-precision limiting mechanism for aluminum profile cutting according to claim 5 is characterized in that: An arc-shaped angle scale is arranged on the machine base outside the clamping platform, and an angle pointer is fixedly arranged on the side wall of the clamping platform for cooperating with the angle scale to indicate the rotation angle of the clamping platform.

7. The high-precision limiting mechanism for aluminum profile cutting according to claim 1 is characterized in that: The extension guide rod is made of a hollow square tube, and an adjustment long hole extending in the front-to-back direction is opened on the upper side of the extension guide rod. The bottom of the limit block can be loosely connected to the adjustment long hole through an adjusting bolt, and a length scale is set on one side of the adjustment long hole to indicate the locking position of the limit block on the extension guide rod.

8. The high-precision limit mechanism for aluminum profile cutting according to claim 1, characterized in that: A support frame is vertically arranged above the machine base, and a lifting swing arm is rotatably hinged on the top of the support frame, and the cutting head is installed at the swinging end of the lifting swing arm; the cutting head includes a protective cover, a cutting blade, an operating handle and a cutting motor, the protective cover is fixedly connected to the lifting swing arm, the cutting motor is fixedly installed on the outside of the protective cover, the motor shaft of the cutting motor is through-hole extended into the inside of the protective cover, the cutting blade is placed in the protective cover, and is detachably installed on the motor shaft of the cutting motor, and the operating handle is fixedly connected to the protective cover.

9. The high-precision limit mechanism for aluminum profile cutting according to claim 1, characterized in that: The clamping table is a horizontally arranged disc-shaped structure, with a rotating shaft coaxially fixedly connected to the central part of the lower surface of the clamping table, and a rotating shaft groove is provided on the upper surface of the machine base, and the rotating shaft is rotatably embedded in the rotating shaft groove through a rotating bearing; a circular storage groove is coaxially provided at the central part of the upper surface of the clamping table, which is used for cutting and making way when the cutting head is pressed down and for collecting and accommodating cutting debris, and a cleaning notch is provided on the left side of the storage groove for cleaning the cutting debris.

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