Aluminum profile combined processing machine tool for window frame production

Abstract

This invention relates to the field of multi-functional CNC cutting machine tools, and in particular to a combined aluminum profile processing machine tool for window frame production. It includes a rotary support, and further includes: an external frame for mounting components; a swing bracket coaxially fixed to the outer ring of the rotary support, the bottom of which is rotatably connected to the external frame, and a pair of actively controlled telescopic rods ball-connected to both sides of the swing bracket. This invention provides a function for cutting aluminum profiles using a small-sized circular saw blade, and the circular saw blade has edge-finding cutting capabilities, which is superior to traditional circular saw cutting machine tools that rely on large-sized saw blades. It features lower cutting resistance, lower cutting vibration, less workpiece cutting loss, smoother cuts, and a smaller equipment size, and can be fully automated with CNC control. This invention also has the function of changing the cutting direction and the angle between the workpiece and the machine tool, with a stable structure and simple control, meeting the needs of different bevel angles for window and door aluminum profiles.

Description

Technical Field

[0001] This invention relates to the field of multi-functional CNC cutting machine tools, and in particular to a combined processing machine tool for aluminum profiles used in window frame production. Background Technology

[0002] Cutting machine tools with large-sized circular saw blades are commonly used in the market to cut aluminum profiles for door and window frames. This type of equipment offers a more direct cutting method, and the structure and control logic of the cutting section are relatively simple. However, such equipment also has performance limits. The main reason for the limitation in processing performance is the contradiction between the increasingly complex and diverse profile structures and sizes brought about by market development and the size limits of the circular saw blades on the cutting machine tools. Traditional circular saw cutting covers the cross-sectional dimensions of the profile by using the radius of the saw blade, and it is also necessary to remove the circular saw blade shaft and clamping parts, further reducing the processing range of the circular saw blade. Moreover, increasing the size of the circular saw blade means greater self-weight, more difficult dynamic balancing, larger saw teeth due to the thickness of the saw blade, and higher cutting losses and processing vibrations. The production safety of the equipment will also be reduced. In short, the size of the circular saw blade cannot be simply increased, as it will bring a series of technical challenges and increased costs to the cutting machine tool.

[0003] To address the technical limitations of circular saw blade processing machines, a combined processing machine tool for aluminum profiles produced by CNC machining of window frames using a small saw blade is proposed. Summary of the Invention

[0004] In view of the problems that traditional circular saw blade cutting machine tools mentioned above or in the prior art are prone to reduced processing quality and reduced processing safety due to the increase of saw blade size, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a machine tool for processing aluminum profiles in window frame production.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: an aluminum profile assembly processing machine tool for window frame production, comprising a rotary support, and further comprising: an external frame for mounting components; a swing bracket coaxially fixed to the outer ring of the rotary support, the bottom of the swing bracket being rotatably connected to the external frame, a pair of actively controlled telescopic rods being ball-jointed on both sides of the swing bracket, the telescopic rods being parallel to each other, and a guide rod being vertically fixedly connected to the cylindrical shell of the telescopic rod, the guide rod being slidably inserted into the external frame in the horizontal direction; a rotating bracket coaxially fixed to the inner ring of the rotary support, a CNC motor being fixedly connected to the rotating bracket, and the CNC motor being drivenly connected to the outer ring of the rotary support, the rotating bracket also being hinged to a swing arm and a second telescopic rod, a cutting motor being fixedly connected to the end of the swing arm, and the housing of the cutting motor being hinged to the second telescopic rod.

[0007] As a preferred embodiment of the aluminum profile assembly processing machine tool for window frame production according to the present invention, wherein: the rotation axis between the swing bracket and the outer frame is vertically arranged along the radial direction of the circular structure of the swing bracket, the hinge axis between the swing arm and the rotating bracket is parallel to the axial direction of the circular structure of the rotating bracket, and both the rotation axis of the swing bracket and the hinge axis of the swing arm are connected to an angle encoder.

[0008] As a preferred embodiment of the present invention for aluminum profile assembly processing machine tool for window frame production, wherein: the outer peripheral wall of the swing bracket is provided with four fixed ears in a circular array, each of the fixed ears is equipped with a ball head connector and connected to the telescopic rod one, the telescopic rod one is horizontally arranged, and the two guide rods located above the axis of the swing bracket are coaxial.

[0009] As a preferred embodiment of the aluminum profile assembly processing machine tool for window frame production according to the present invention, a reinforcing arm is fixedly connected between the connecting telescopic rod and the guide rod, and a reinforcing plate is connected between the two reinforcing arms located on one side of the swing bracket.

[0010] As a preferred embodiment of the aluminum profile assembly processing machine tool for window frame production according to the present invention, wherein: the outer peripheral wall of the outer ring of the rotary support is machined with toothed grooves, and the output shaft of the CNC motor is driven by meshing with the toothed grooves of the rotary support through a connecting gear.

[0011] As a preferred embodiment of the aluminum profile combined processing machine tool for window frame production according to the present invention, wherein: the cutting motor is connected to a reduction gearbox, and the reduction gearbox extends into the rotary support ring with a cantilever, the end of the cantilever is rotatably connected to a circular saw blade, the rotation axis of the circular saw blade is parallel to the axis of the rotary support, and the rotation axis of the circular saw blade is belt driven connected to the reduction gearbox through a pulley and a belt.

[0012] As a preferred embodiment of the aluminum profile combined processing machine tool for window frame production according to the present invention, wherein: rollers are rotatably connected to both sides of the pulley inside the swing arm, and the rollers are rotatably supported by the outer side of the belt, so that the wrap angle between the belt and the pulley is greater than 180 degrees.

[0013] As a preferred embodiment of the aluminum profile assembly processing machine tool for window frame production according to the present invention, wherein: in the circular arc motion trajectory of the circular saw blade, there exists a vertical line connecting the hinge axis of the swing arm and the axis of the circular saw blade, and a vertical line connecting the hinge axis of the swing arm and the axis of the slewing bearing, with the included angle between the two lines being zero.

[0014] As a preferred embodiment of the present invention for aluminum profile assembly processing machine tool for window frame production, wherein: the first telescopic rod and the second telescopic rod are both hydraulic cylinders, each driven by an independent servo hydraulic pump, the two first telescopic rods located on one side of the swing bracket form a group, and the oil circuits are connected in parallel, the oil circuits between the two groups of first telescopic rods are connected in series, and the servo hydraulic pump is connected in series between the two groups of first telescopic rods.

[0015] As a preferred embodiment of the aluminum profile combined processing machine tool for window frame production according to the present invention, wherein: the CNC motor and the cutting motor are arranged on the side of the rotary support away from the telescopic rod.

[0016] The beneficial effects of the aluminum profile assembly processing machine tool for window frame production of the present invention are as follows: This invention provides a function for cutting aluminum profiles using a small-sized circular saw blade, and the circular saw blade has the ability to find the edge for cutting. It is superior to traditional circular saw cutting machine tools that rely on large-sized saw blades. It has lower cutting resistance, lower cutting vibration, less workpiece cutting loss, smoother cut and smaller equipment size, and can be fully automated by numerical control. This invention also has the function of changing the cutting direction and the included angle between the workpiece. The structure is stable and the control is simple, which meets the needs of different bevel cutting angles for aluminum profiles for doors and windows. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a machine tool for processing aluminum profiles used in window frame production.

[0019] Figure 2 for Figure 1 A structural diagram from another perspective.

[0020] Figure 3 This is a schematic diagram of the swing structure of an aluminum profile assembly processing machine tool used for window frame production.

[0021] Figure 4 This is a schematic diagram of the rotary cutting structure of an aluminum profile assembly processing machine tool used for window frame production.

[0022] Figure 5 for Figure 4 A structural diagram from another perspective.

[0023] Figure 6 for Figure 5The structural breakdown diagram.

[0024] Figure 7 This is a cross-sectional view of the cantilever structure.

[0025] In the diagram: 100, slewing support; 101, swing bracket; 1011, fixed lug; 102, telescopic rod one; 103, guide rod; 104, rotating bracket; 105, CNC motor; 106, swing arm; 107, telescopic rod two; 108, cutting motor; 1081, gearbox; 1082, pulley; 1083, belt; 1084, roller; 109, angle encoder; 110, ball joint connector; 111, reinforcing arm; 112, reinforcing plate; 113, gear; 114, circular saw blade; 200, external frame. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Example, refer to Figures 1-7 This embodiment provides an aluminum profile combination processing machine tool for window frame production, which can achieve stable and efficient cutting of large-sized irregular aluminum profiles, thin-walled aluminum profiles or aluminum tubes.

[0028] like Figure 1 and Figure 2 As shown, the present invention includes a slewing support 100, an external frame 200 for mounting components, a swing bracket 101 coaxially fixed to the outer ring of the slewing support 100, and a rotating bracket 104 coaxially fixed to the inner ring of the slewing support 100, as shown. Figure 3 As shown, the bottom of the swing bracket 101 is rotatably connected to the outer frame 200. A pair of actively controlled telescopic rods 102 are ball-jointed on both sides of the swing bracket 101. The telescopic rods 102 are parallel to each other, and a guide rod 103 is vertically fixedly connected to the cylindrical shell of the telescopic rods 102. The guide rod 103 is slidably inserted into the outer frame 200 in the horizontal direction. Figure 4 As shown, a CNC motor 105 is fixedly connected to the rotating bracket 104, and the CNC motor 105 is connected to the outer ring of the rotary support 100 through transmission. The rotating bracket 104 is also hinged to a swing arm 106 and a telescopic rod 107. A cutting motor 108 is fixedly connected to the end of the swing arm 106, and the housing of the cutting motor 108 is hinged to the telescopic rod 107. Specifically, the rotation axis between the swing bracket 101 and the outer frame 200 is vertically arranged along the radial direction of the annular structure of the swing bracket 101. The hinge axis between the swing arm 106 and the rotating bracket 104 is parallel to the axial direction of the annular structure of the rotating bracket 104. An angle encoder 109 is connected to both the rotation axis of the swing bracket 101 and the hinge axis of the swing arm 106. The outer peripheral wall of the outer ring of the rotary support 100 is machined with tooth grooves. The output shaft of the CNC motor 105 is driven by meshing with the tooth grooves of the rotary support 100 through the connecting gear 113.

[0029] This invention provides a function of using a small-sized circular saw blade 114 to cut around aluminum profiles. The circular saw blade 114 has the ability to find edges and cut, and can perform contour cutting along the cross-sectional contour of irregular thin-walled aluminum profiles or along the outer wall of tubular aluminum profiles. This is a new type of cutting process that is completely different from traditional circular saw cutting that relies on the radius size of the circular saw.

[0030] First refer to Figure 4 and Figure 5 The telescopic rod 107 extends and pulls the cutting motor 108, and the swing arm 106 provides deflection support for the cutting motor 108. This controls the distance between the circular saw blade 114 at the end of the cutting motor 108 and the center of the rotary support 100. The CNC motor 105 drives the gear 113, which meshes with the outer ring of the rotary support 100. With the outer ring of the rotary support 100 and the outer frame 200 fixed and their relative positions unchanged, the rotating bracket 104 and its components, including the cutting motor 108 and the circular saw blade 114, can rotate. Figure 4 Taking a perspective example, when the circular saw blade 114 swings upward along the arc path, its direction of movement is a combination of two directions: upward and leftward. Therefore, when the rotating support 104 is rotated clockwise to counteract the leftward movement of the circular saw blade 114, under proper coordination, the circular saw blade 114 can move in a straight line or a curve, enabling it to move in any direction except along the axis of the rotary support 100. This allows the circular saw blade 114 to conform to the surface of the irregular aluminum profile for contour cutting, instead of using a circular saw with a large radius to directly cover the irregular aluminum profile to complete the cutting. The processing method of this invention has significant advantages, especially the use of a smaller circular saw blade 114, which can be thinner, resulting in lower cutting resistance, lower cutting vibration, less workpiece cutting loss, smoother cuts, and smaller equipment size, and can be fully automated by numerical control.

[0031] In addition to contour cutting with the small-sized circular saw blade 114, this invention also provides the function of changing the cutting direction of the circular saw blade 114 and the included angle between it and the workpiece. (Refer to...) Figure 1The swing bracket 101 is used to fix the slewing support 100. Its bottom is inserted into the outer frame 200 to support its rotation. The swing bracket 101 is deflected by the staggered pushing and pulling of the telescopic rods 102 on both sides of the swing bracket 101. Structural combination Figure 1 and Figure 3 The outer peripheral wall of the swing bracket 101 is arranged in a ring array with four fixing ears 1011. Each fixing ear 1011 is equipped with a ball connector 110 to connect with the first telescopic rod 102. The first telescopic rod 102 is horizontally arranged and coaxial with two guide rods 103 located on the axis of the swing bracket 101. A reinforcing arm 111 is also fixedly connected between the connected first telescopic rod 102 and guide rod 103. A reinforcing plate 112 is also connected between the two reinforcing arms 111 on one side of the swing bracket 101. The first telescopic rod 102 and the second telescopic rod 107 are both hydraulic cylinders, each driven by an independent servo hydraulic pump. The two first telescopic rods 102 on one side of the swing bracket 101 form a group, and the oil circuits are connected in parallel. The oil circuits between the two groups of first telescopic rods 102 are connected in series. The servo hydraulic pump is connected in series between the two groups of first telescopic rods 102. The CNC motor 105 and the cutting motor 108 are located on the side of the rotary support 100 away from the first telescopic rod 102.

[0032] In theory, the above two conditions have achieved the purpose of changing the cutting angle of the circular saw blade 114. However, in actual processing experience, the requirements of machine tools for structural rigidity are very high. Therefore, the telescopic rod 102 is used to push and pull the two sides of the swing bracket 101. The swing bracket 101 is driven to deflect from the pivot point of the swing bracket 101, which can obtain a longer driving arm. Thus, it can provide an effective static torque during the processing to fix the angle between the cutting direction of the circular saw blade 114 and the workpiece. Based on the above principle, the necessity of telescopic rod 102 can be understood. When telescopic rod 102 exists, in addition to driving the swing bracket 101 to deflect, it is also desirable for telescopic rod 102 to provide structural support for the swing bracket 101. Therefore, telescopic rod 102 cannot be simply connected to the swing bracket 101 through a hinge structure. Instead, the telescopic direction of telescopic rod 102 is fixed, and its axial direction is restricted by the external frame 200 and cannot be changed. Therefore, even after the rotational support connection between the swing bracket 101 and the external frame 200 is disconnected, the swing bracket 101 is still firmly fixed to the ends of the four telescopic rods 102. The telescopic rod 102 becomes a strong structural support in addition to the pivot point of the swing bracket 101. Based on the above principle, it can be further concluded that the telescopic rod 102 must both drive the swing bracket 101 to deflect and maintain its own axial direction. Therefore, when the swing bracket 101 deflects, causing the telescopic rod 102 to no longer be perpendicular to the swing bracket 101, the distance between the two pairs of telescopic rods 102 on both sides of the swing bracket 101 will also decrease. Figure 3 As shown, all telescopic rods 102 can slide through guide rods 103, and the distance between the two pairs of telescopic rods 102 changes adaptively with the deflection of the swing bracket 101. At the same time, due to the pivot point connection between the swing bracket 101 and the outer frame 200, the phenomenon of all telescopic rods 102 and the swing bracket 101 shifting to the same side together will not occur. Based on the above principle, the posture and motion constraints of the swing bracket 101 result in a characteristic: during the deflection of the swing bracket 101, the hydraulic oil flow rate of a pair of telescopic rods 102 on one side is equal to the hydraulic oil flow rate of a pair of telescopic rods 102 on the other side. This characteristic greatly reduces the control difficulty of the telescopic rods 102. It is not necessary to precisely control the hydraulic oil flow rate of the telescopic rods 102 on both sides of the swing bracket 101; it is only necessary to simply pump the hydraulic oil from one side of the swing bracket 101 into the telescopic rods 102 on the other side.

[0033] The two main functions of contour cutting and corner control provided by this invention both involve hydraulic control. The swing angle of the circular saw blade 114 and the swing arm 106 in contour cutting needs to be fed back to the CNC system in real time. This value is not set as the extension length of the telescopic rod 102, but is directly detected by the angle encoder 109 on the hinge shaft of the swing arm 106. When the swing arm 106 swings to a certain angle, the telescopic rod 102 extends or shortens until the value detected by the angle encoder 109 reaches the set value. The swing angle of the swing bracket 101 is the same. In the circular arc motion trajectory of the circular saw blade 114, there exists a perpendicular line connecting the hinge axis of the swing arm 106 and the axis of the circular saw blade 114, and a perpendicular line connecting the hinge axis of the swing arm 106 and the axis of the slewing bearing. The angle between these two lines is zero. Calculating the swing angle of the swing arm 106 and its relationship to the distance between the saw blade and the rotation center point of the slewing bearing 100, we can deduce that: Let the pivot point of the swing arm 106 be P, the line segment connecting the pivot point of the swing arm 106 to the axis of the slewing bearing 100 be A, the center of the circular saw blade 114 be S, the line segment connecting the pivot point of the swing arm 106 to the axis of the saw blade be B, and the rotation center of the slewing bearing 100 be O. The swing angle of the swing arm 106 relative to the reference position, and the distance from the center S of the circular saw blade 114 to the center point O of the rotary support 100 when the swing arm 106 swings. With swing angle It exhibits a cosine function relationship and shows periodic fluctuations: It can be used as a calculation method for contour movement control of the circular saw blade 114 in a CNC system.

[0034] refer to Figure 7 The cutting motor 108 is connected to a reduction gearbox 1081, and the reduction gearbox 1081 extends into the slewing support 100 ring with a cantilever. The end of the cantilever is rotatably connected to a circular saw blade 114. The rotation axis of the circular saw blade 114 is parallel to the axis of the slewing support, and the rotation axis of the circular saw blade 114 is belt driven to the reduction gearbox 1081 through a pulley 1082 and a belt 1083. Inside the swing arm 106, rollers 1084 are rotatably connected on both sides of the pulley 1082. The rollers 1084 rotatably support the belt 1083 from the outside of the belt 1083, so that the wrap angle between the belt 1083 and the pulley 1082 is greater than 180 degrees.

[0035] In summary, this invention provides a function for cutting aluminum profiles using a small-sized circular saw blade 114. The circular saw blade 114 has the ability to find edges for cutting, which is superior to traditional circular saw cutting machine tools that rely on large-sized saw blades. It has lower cutting resistance, lower cutting vibration, less workpiece cutting loss, smoother cuts, and smaller equipment size, and can be fully automated by CNC. This invention also has the function of changing the cutting direction and the angle between the workpiece and the cutting material. The structure is stable and the control is simple, meeting the needs of different bevel cutting angles for aluminum profiles for doors and windows.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A machine tool for processing aluminum profiles in window frame production, comprising a slewing support (100), characterized in that, Also includes: External frame (200) for mounting components; A swing bracket (101) is coaxially fixed to the outer ring of the rotary support (100). The bottom of the swing bracket (101) is rotatably connected to the outer frame (200). A pair of actively controlled telescopic rods (102) are ball-connected to both sides of the swing bracket (101). The telescopic rods (102) are parallel to each other, and a guide rod (103) is vertically fixed to the cylindrical shell of the telescopic rods (102). The guide rod (103) is slidably inserted into the outer frame (200) in the horizontal direction. A rotating bracket (104) is coaxially fixed to the inner ring of the slewing support (100). A CNC motor (105) is fixedly connected to the rotating bracket (104), and the CNC motor (105) is connected to the outer ring of the slewing support (100) in a transmission connection. The rotating bracket (104) is also hinged to a swing arm (106) and a telescopic rod (107). A cutting motor (108) is fixedly connected to the end of the swing arm (106), and the housing of the cutting motor (108) is hinged to the telescopic rod (107).

2. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: The rotation axis between the swing bracket (101) and the outer frame (200) is vertically arranged along the radial direction of the annular structure of the swing bracket (101). The hinge axis between the swing arm (106) and the rotating bracket (104) is parallel to the axial direction of the annular structure of the rotating bracket (104). An angle encoder (109) is connected to both the rotation axis of the swing bracket (101) and the hinge axis of the swing arm (106).

3. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: The outer peripheral wall of the swing bracket (101) is provided with four fixed ears (1011) arranged in a ring array. Each fixed ear (1011) is equipped with a ball head connector (110) and connected to the first telescopic rod (102). The first telescopic rod (102) is horizontally arranged and is coaxial between two guide rods (103) located on the axis of the swing bracket (101).

4. The aluminum profile assembly processing machine tool for window frame production as described in claim 3, characterized in that: A reinforcing arm (111) is fixedly connected between the telescopic rod (102) and the guide rod (103), and a reinforcing plate (112) is also connected between the two reinforcing arms (111) on one side of the swing bracket (101).

5. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: The outer peripheral wall of the outer ring of the slewing support (100) is machined with tooth grooves, and the output shaft of the CNC motor (105) is driven by meshing with the tooth grooves of the slewing support (100) through a connecting gear (113).

6. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: The cutting motor (108) is connected to a reduction gearbox (1081), and the reduction gearbox (1081) extends into the slewing support (100) ring with a cantilever. The end of the cantilever is rotatably connected to a circular saw blade (114). The rotation axis of the circular saw blade (114) is parallel to the axis of the slewing support, and the rotation axis of the circular saw blade (114) is belt driven to the reduction gearbox (1081) through a pulley (1082) and a belt (1083).

7. The aluminum profile assembly processing machine tool for window frame production as described in claim 6, characterized in that: Inside the swing arm (106), rollers (1084) are rotatably connected to both sides of the pulley (1082). The rollers (1084) are rotatably supported by the outer side of the belt (1083), so that the wrap angle between the belt (1083) and the pulley (1082) is greater than 180 degrees.

8. The aluminum profile assembly processing machine tool for window frame production as described in claim 6, characterized in that: In the circular arc motion trajectory of the circular saw blade (114), there exists a vertical line connecting the hinge axis of the swing arm (106) and the axis of the circular saw blade (114), and a vertical line connecting the hinge axis of the swing arm (106) and the axis of the slewing bearing, with the included angle between the two lines being zero.

9. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: Both telescopic rod one (102) and telescopic rod two (107) are hydraulic cylinders, each driven by an independent servo hydraulic pump. The two telescopic rods one (102) located on one side of the swing bracket (101) are a group, and the oil circuits are connected in parallel. The oil circuits between the two groups of telescopic rods one (102) are connected in series, and the servo hydraulic pump is connected in series between the two groups of telescopic rods one (102).

10. The aluminum profile assembly processing machine tool for window frame production as described in claim 1, characterized in that: The CNC motor (105) and the cutting motor (108) are located on the side of the slewing support (100) away from the telescopic rod (102).

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