Automatic special-shaped contour burr grinding device

Abstract

The invention discloses an automatic special-shaped contour burr grinding device. The automatic special-shaped contour burr grinding device comprises an equipment frame, an electric control power system, a main shaft module, a workpiece positioning module, an inner chamfering module, an outer chamfering module and a feeding and discharging supporting module, the main shaft module is used for clamping and driving a workpiece to rotate; the workpiece positioning module is used for determining the workpiece clamping height; the inner chamfering module and the outer chamfering module enable an inner polishing gun and an outer polishing gun to be tightly attached to the inner cavity and the outer contour of a workpiece to do profiling movement through mechanisms comprising profiling dies, profiling rods and multi-axis movement assemblies correspondingly so as to synchronously remove inner burrs and outer burrs. The feeding and discharging supporting module drives the inner chamfering module and the outer chamfering module to move between the working position and the avoiding position. Full-automatic and high-precision profiling grinding of the inner contour and the outer contour of the annular workpiece under one-time clamping is achieved, and the device has the advantages of being high in efficiency, good in consistency, suitable for complex contours and convenient to change.

Description

Technical Field

[0001] This invention relates to the field of automotive parts processing technology, and more specifically to an automatic burr removal device for irregular contours. Background Technology

[0002] The three-pin housing, as the external support component of the telescopic constant velocity universal joint (hereinafter referred to as the inner and outer wheels), has irregularly shaped inner and outer diameters at the cup end. The burrs generated during machining cannot be removed by adding a chamfering process. These burrs not only affect the appearance quality and dimensional accuracy of the workpiece, but if not removed, they may also lead to accelerated wear, stress concentration, and even safety hazards during subsequent assembly and use.

[0003] Currently, common methods for deburring such workpieces include manual grinding, semi-automatic grinding using fixed tools, and some specialized machine processing. Manual grinding is inefficient, labor-intensive, and the grinding quality depends entirely on the operator's experience and skill level, resulting in poor consistency. Furthermore, it poses a risk of injury from dust and debris. While semi-automatic or specialized equipment improves efficiency to some extent, it often has limited functionality, typically only processing one side of the outer or inner contour. For workpieces requiring simultaneous processing of both inner and outer contours, multiple clamping or transfer between different machines is necessary, leading to complex processes, extended production cycles, and accumulated positioning errors. In addition, existing equipment lacks the contour-following ability of its grinding tools when dealing with irregularly shaped cavities, easily causing uneven grinding, over-grinding, or under-grinding, making it difficult to ensure uniform removal of burrs from complex contour edges.

[0004] Therefore, there is an urgent practical need to develop an automated device that integrates automatic workpiece clamping, positioning, and synchronous high-efficiency contour grinding of inner and outer contours. This device is essential for improving the processing quality, production efficiency, and automation level of such parts, while reducing labor costs and occupational health risks. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an automatic burr removal device for irregular contours, which integrates automatic workpiece clamping, positioning, and simultaneous and efficient contour grinding of inner and outer contours. It achieves efficient, precise, and automated removal of burrs from ring-shaped workpieces with complex inner and outer contours, and has significant advantages in improving product quality, production efficiency, and automation.

[0006] The technical solution adopted by this invention to solve the technical problem is: an automatic grinding device for irregular contour burrs, comprising: a device frame; a spindle module, which is mounted on the device frame for fastening and driving the workpiece to rotate; a workpiece positioning module, which is mounted on the device frame for positioning the clamping height of the workpiece; an inner chamfering module, which is mounted on the device frame for moving along the inner contour of the workpiece to remove inner cavity burrs; an outer chamfering module, which is mounted on the device frame for moving along the outer contour of the workpiece to remove outer burrs; a loading and unloading support module, which is mounted on the device frame for cooperating with the loading and unloading of workpieces; and an electric control power system, which provides drive for each module.

[0007] Furthermore, the spindle module includes a spindle base, a spindle turntable mounted on the spindle base, a Z1 axis power disk locked to the spindle turntable, and a three-jaw pneumatic chuck connected to the Z1 axis power disk; the upper surface of the Z1 axis power disk is evenly distributed with three V-shaped grooves, which are used to provide lifting power for the inner chamfer module.

[0008] Furthermore, the workpiece positioning module includes a main base fixed to the equipment frame, a radial adjustment block movably connected to the main base, an L-shaped base fixed to the radial adjustment block, an elastic positioning mechanism installed on the L-shaped base, and a lever lever linked to the elastic positioning mechanism.

[0009] Furthermore, the elastic positioning mechanism includes a housing, a positioning rod disposed within the housing, a self-lubricating copper sleeve fitted over the positioning rod, and a pressure spring acting on the positioning rod; moving the lever can cause the positioning rod to extend and retract within the self-lubricating copper sleeve, and the pressure spring is used to reset the positioning rod.

[0010] Furthermore, the inner chamfering module includes an inner grinding gun, and an inner X-axis motion component, an inner Y-axis motion component, and an inner Z-axis motion component for driving the movement of the inner grinding gun.

[0011] Furthermore, the inner X-axis motion assembly includes an inner X1-axis motion assembly, an inner X2-axis motion assembly, and an inner X3-axis motion assembly; the inner X1-axis motion assembly includes an inner X1-axis horizontal plate, an inner X1-axis template that cooperates with the inner X1-axis horizontal plate, and a return spring acting on the inner X1-axis horizontal plate; the inner X2-axis motion assembly includes an inner X2-axis horizontal plate and an adjusting screw for adjusting the radial position of the inner X2-axis horizontal plate, which is fixed to the inner X1-axis horizontal plate; the inner X3-axis motion assembly includes a turntable, an inner grinding gun mounting base, and an angle-adjustable inner X3-axis template, which is used to drive the inner grinding gun to swing laterally and grind the concave and convex contours of the workpiece's inner cavity.

[0012] Furthermore, the inner chamfering module also includes a torque balancing device, which includes a balance bar, a balance bar seat, and a counterweight bar, fixed to the inner X2 axis horizontal plate; used to balance the torque of the inner grinding gun and its drive assembly, and to equalize the force of the inner grinding gun contacting different positions of the workpiece cavity.

[0013] Furthermore, the inner Z-axis motion assembly includes an inner Z1-axis motion assembly and an inner Z2-axis motion assembly; the inner Z1-axis motion assembly includes an inner Z1-axis vertical plate, an inner Z1-axis horizontal plate, a vertical push rod, a horizontal push rod, an inner Z1-axis cylinder push rod, and a power plate push rod that contacts the Z1-axis power plate of the main spindle module; the inner Z2-axis motion assembly includes an inner Z2-axis vertical plate, a torque balance fulcrum, and a linear guide slider, which is fixed on the inner Z2-axis vertical plate and is responsible for the longitudinal movement of the inner grinding gun to remove burrs from the chamfered edges of the inner cavity.

[0014] Furthermore, the external chamfering module includes an external grinding gun, and an external X-axis motion assembly and an external Z-axis motion assembly for driving the external grinding gun. When the workpiece rotates, the external X-axis motion assembly uses a contour rod to conform to the workpiece, driving the external X-axis motion assembly to move laterally, and the external Z-axis motion assembly drives the external grinding gun to move longitudinally, thereby removing burrs from the outer edge of the workpiece end face.

[0015] Furthermore, the outer X-axis motion assembly includes an outer X1-axis motion assembly, an outer X2-axis motion assembly, and an outer X3-axis motion assembly. The outer X1-axis motion assembly is fixed to the base plate of the equipment frame. The outer X1-axis reciprocating motion of the outer chamfering module is achieved by the cylinder of the loading and unloading support module in conjunction with the outer X1-axis release spring. The outer X2-axis motion assembly is fixed to the outer X1-axis horizontal plate. When changing workpieces, the outer grinding gun is moved radially by adjusting the screw to adapt to the size of various workpieces. The outer X3-axis motion assembly is fixed to the outer Z1-axis horizontal plate. The outer X3-axis contour rod is in contact with the workpiece, driving the outer X3-axis motion assembly to move laterally. This, in conjunction with the outer Z-axis motion assembly, drives the outer grinding gun to move longitudinally, thereby removing burrs from the outer edge of the workpiece end face.

[0016] Furthermore, the outer Z-axis motion assembly includes an outer Z1-axis motion assembly and an outer Z2-axis motion assembly; the outer Z1-axis motion assembly is fixed to the outer Z2-axis vertical plate; during model change and debugging, the outer grinding gun is moved longitudinally by adjusting the screw to adjust the grinding angle to a suitable size; the outer Z2-axis motion assembly is fixed to the outer Z1-axis vertical plate; the weight of the outer Z2-axis motion assembly itself causes the outer Z2-axis template to press against the outer Z2-axis template push rod; when the workpiece rotates, it will drive the outer Z2-axis template push rod to move laterally; according to the tilt angle of the outer Z2-axis template, the outer Z2-axis motion assembly and the outer grinding gun will move longitudinally simultaneously.

[0017] Furthermore, the loading and unloading support module includes a double-rod cylinder, a cylinder connecting block and a cylinder connecting rod connected to the double-rod cylinder, a Y-axis horizontal plate connected to the cylinder connecting rod, and an inner module push rod and an outer module push rod fixed to both sides of the Y-axis horizontal plate.

[0018] The beneficial effects of this invention are as follows: Compared with the prior art, the automatic burr removal device for irregular contours provided by this invention has the following advantages: 1) Fully automated and efficient grinding is achieved: By integrating the spindle module, workpiece positioning module, loading and unloading support module and electrical control system, the automatic positioning, clamping, rotation of workpiece and automatic advance and retreat of modules are realized, freeing manual labor from heavy and repetitive grinding operations and greatly improving production efficiency and operational safety.

[0019] 2) Ensures synchronized and precise machining of inner and outer contours: Independently driven yet collaborative inner and outer chamfering modules are incorporated. On the inner side, the V-shaped groove of the Z1-axis power plate engages with the inner Z1-axis assembly, converting the spindle's rotational motion into periodic longitudinal feed of the inner grinding gun, achieving multi-point contact grinding of the workpiece's inner ring. In the X-axis direction, multi-layered templates (such as the inner X1-axis template and inner X3-axis template) and an elastic reset design ensure the inner grinding gun closely conforms to the uneven inner cavity contour. On the outer side, a contouring rod (outer X3-axis contouring rod) directly contacts the workpiece's outer edge, converting the workpiece's outer contour shape into the outer grinding gun's lateral movement trajectory in real time. Combined with the outer Z2-axis template, this lateral movement is converted into longitudinal compensation movement, achieving precise tracking grinding of the outer contour. Synchronous inner and outer operation, completed in a single clamping setup, ensures machining accuracy and consistency.

[0020] 3) Improved grinding quality and adaptability for complex internal cavities: The unique torque balancing device of the internal chamfering module balances the self-weight torque of the internal grinding gun and its moving components through the counterweight rod, so that the internal grinding gun can maintain a stable and balanced contact pressure when it contacts different positions in the inner cavity of the workpiece (especially horizontal or inclined surfaces), avoiding the problem of uneven grinding force caused by self-weight, and is particularly suitable for homogeneous grinding of deep cavity and irregular cavity workpieces.

[0021] 4) Enhanced equipment versatility and ease of changeover: The design of radial adjustment blocks for the workpiece positioning module, inner X2 axis radial adjustment blocks for the inner chamfering module, outer X2 axis radial adjustment blocks for the outer chamfering module, and longitudinal adjustment blocks for the outer Z1 axis enable quick changeover settings through simple mechanical adjustments when dealing with workpieces of different sizes and specifications, thereby improving equipment utilization and production flexibility.

[0022] 5) Compact structure and stable and reliable operation: Each module adopts linear guide slider guidance, which has high motion accuracy; key transmission components such as templates and push rods are reasonably designed and the force flow is clearly transmitted; through positive and negative limit blocks and return springs, the movement of each component is guaranteed to be safe and reliable within the predetermined stroke, the overall device has good rigidity and long service life. Attached Figure Description

[0023] Figures 1-2 This is a schematic diagram of the overall structure of the automatic polishing device provided by the present invention.

[0024] Figure 3 This is a schematic diagram of the spindle module in this invention.

[0025] Figure 4 This is a schematic diagram of the Z1 axis power disk in this invention.

[0026] Figure 5 This is a schematic diagram of the workpiece positioning module in this invention.

[0027] Figure 6 This is a schematic diagram of the elastic positioning mechanism in this invention.

[0028] Figures 7-9 This is a schematic diagram of the inner chamfer module in this invention.

[0029] Figures 10-11 This is a schematic diagram of the outer chamfer module in this invention.

[0030] Figures 12-13 This is a schematic diagram of the loading and unloading support module in this invention.

[0031] Among them, 1-spindle module; 101-three-jaw pneumatic chuck; 102-Z1 axis power plate; 103-spindle turntable; 104-spindle base; 105-anti-loosening lock cap; 106-sensor contact plate; 107-synchronous belt flange; 108-synchronous belt lock cap; 109-V-shaped groove; 2-Workpiece positioning module; 201-Main base; 202-Radial adjustment block; 203-L-shaped base; 204-Elastic positioning mechanism; 204-1-Outer shell; 204-2-Positioning rod; 204-3-Self-lubricating copper sleeve; 204-4-Compression spring; 204-5-Pull rod; 204-6-Thrust bearing; 205-Lever lever; 3-Inner chamfer module; 301-Inner Y-axis horizontal plate; 302-Inner Y-axis vertical plate; 303-Inner Z1-axis vertical plate; 304-Inner Z1-axis horizontal plate; 305-Inner X1-axis horizontal plate; 306-Inner X2-axis horizontal plate; 307-Inner X2-axis vertical plate; 308-Inner Z2-axis vertical plate; 309-Inner X3-axis vertical plate; 310-Vertical push rod; 311-Horizontal push rod; 312-Power plate push rod; 313-Inner Z1-axis cylinder push rod; 314-Inner Y-axis positive limit block; 315-Inner Y-axis negative force block; 316-Inner Y-axis negative limit block; 317-Inner Y-axis Return spring support rod; 318-Balance bar; 319-Balance bar seat; 320-Counterweight bar; 321-Torque balance fulcrum; 322-Inner X1 axis template; 323-Inner X3 axis template; 324-Inner X1 axis template angle adjustment block; 325-Inner X1 axis spring force block; 326-Inner X2 axis spring force block; 327-Inner X2 axis radial adjustment block; 330-Turntable; 331-Inner X3 axis negative limit; 332-Inner grinding gun fixing seat; 333-Inner grinding gun; 334-Inner Y-axis positive force block; 335-Inner X1 axis template push rod; 4-Outer chamfer module; 401-Outer X1 axis horizontal plate; 402-Outer X1 axis positive limiting block; 403-Outer X1 axis return spring support rod; 404-Outer X1 axis positive force-bearing block; 405-Outer X1 axis negative limiting block; 406-Outer X1 axis cylinder push rod; 407-Outer X2 axis horizontal plate; 408-Outer X2 axis vertical plate; 409-Outer X2 axis base; 410-Horizontal plate positioning; 411-Outer X2 axis Radial adjusting block; 412-Outer Z1 axis horizontal plate; 413-Outer Z1 axis vertical plate; 414-Longitudinal adjusting block; 415-Outer Z2 axis vertical plate; 416-Outer Z2 axis horizontal plate; 417-Outer Z2 axis template; 418-Outer Z2 axis template push rod; 419-Outer grinding gun fixing seat; 420-Outer X3 axis horizontal plate; 421-Outer X3 axis contouring rod; 422-Outer X3 axis negative limit; 423-Outer grinding gun; 5-Loading / unloading support module; 501-Y-axis horizontal plate; 502-Cylinder connecting rod; 503-Inner module push rod; 504-Outer module push rod; 505-Cylinder connecting block; 6-Equipment frame; 7-Electrical control power system; 8-Workpiece. Detailed Implementation

[0032] The present invention will be further illustrated below with specific embodiments. However, these examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0033] Example like Figures 1-6As shown, an automatic deburring device for irregular contours mainly includes a spindle module 1, a workpiece positioning module 2, an inner chamfering module 3, an outer chamfering module 4, a loading / unloading support module 5, a device frame 6 for fixing and installing each module, and an electronically controlled power system 7 for driving each module. The spindle module 1 is used to fasten the workpiece, and in conjunction with the electronically controlled power system 7, it ensures stable rotation of the workpiece so that the chamfering module can perform its work. The workpiece positioning module 2 is used to position the clamping height of the workpiece. The inner chamfering module 3 moves along the contour of the workpiece's inner cavity to remove burrs from the inner cavity. The outer chamfering module 4 moves along the contour of the workpiece's outer cavity to remove burrs from the outer surface. The loading / unloading support module 5 is used to assist in loading and unloading the workpiece.

[0034] The spindle module 1 includes a three-jaw pneumatic chuck 101, a Z1-axis power disk 102, a spindle turntable 103, and a spindle base 104. The three-jaw pneumatic chuck 101 is locked to the Z1-axis power disk 102 and the spindle turntable 103, and is mounted on the spindle base 104, forming a rotation structure through bearings and anti-loosening caps 105. A sensor contact disk 106 is fixed below the spindle turntable 103 and provides spindle rotation position data to the electronically controlled power system 7. A synchronous belt flange 107 and a synchronous belt lock cap 108 are used to connect to a synchronous belt pulley so that the spindle turntable 103 can receive rotational kinetic energy transmitted by the electronically controlled power system 7.

[0035] In one embodiment, three V-shaped grooves 109 are evenly distributed on the upper surface of the Z1 axis power disk 102. When the Z1 axis power disk 102 rotates synchronously with the spindle turntable 103, the V-shaped grooves 109 provide lifting kinetic energy to the Z1 axis of the inner chamfering module 3, realizing multi-point contact between the workpiece and the grinding gun of the inner chamfering module, and improving the service life of the alloy rotary file.

[0036] The workpiece positioning module 2 includes a main base 201, a radial adjustment block 202, an L-shaped base 203, an elastic positioning mechanism 204, and a lever 205. The main base 201 is fixed to the equipment frame 6. The radial adjustment block 202 is movably connected to the main base 201. One end of the L-shaped base 203 is fixed to the radial adjustment block 202, and the other end of the L-shaped base 203 is connected to the elastic positioning mechanism 204. The lever 205 is used to adjust the telescopic movement of the elastic positioning mechanism 204. The workpiece positioning module 2 is directly positioned on the workpiece surface to be processed, which helps improve positioning accuracy and changeover efficiency.

[0037] In one embodiment, the elastic positioning mechanism 204 includes a housing 204-1, a positioning rod 204-2, a self-lubricating copper sleeve 204-3, a pressure spring 204-4, a pull rod 204-5, and a thrust bearing 204-6. Moving the lever 205 causes the positioning rod 204-2 to extend and retract within the self-lubricating copper sleeve 204-3, ensuring that the positioning rod 204-2 does not interfere with the workpiece during clamping. When the workpiece rotates, the positioning rod 204-2 rotates accordingly, reducing friction with the workpiece. The pressure spring 204-4 is used to reset the positioning rod 204-2. The end of the positioning rod 204-2 rests against the workpiece surface to be processed, used to position the clamping height of the workpiece.

[0038] The internal chamfering module 3 includes an internal X-axis motion assembly, an internal Y-axis motion assembly, an internal Z-axis motion assembly, and an internal grinding gun 333. The internal X-axis motion assembly enables the internal grinding gun 333 to contact the workpiece in the X-axis direction. The internal Y-axis motion assembly, coordinated with the cylinder movement of the loading / unloading support module 5, enables the internal chamfering module 3 to reciprocate between the working position and the clearance position along the Y-axis. The internal Z-axis motion assembly enables the internal grinding gun 333 to move longitudinally, including moving longitudinally away from or closer to the workpiece, and also including longitudinal movement within the workpiece cavity to remove burrs from the chamfered edges.

[0039] In one embodiment, the inner X-axis motion assembly includes an inner X1-axis motion assembly, an inner X2-axis motion assembly, and an inner X3-axis motion assembly. The inner X1-axis motion assembly includes an inner X1-axis horizontal plate 305, an inner X1-axis template 322, an inner X1-axis template angle adjustment block 324, an inner X1-axis template push rod 335, an inner X1-axis spring force block 325, a return spring, and a linear guide slider, all fixed to the inner Z1-axis horizontal plate 304. When the inner Z1-axis motion assembly performs longitudinal lifting and lowering movement, the inner X1-axis horizontal plate 305, influenced by the inner X1-axis template 322 and the return spring, performs transverse reciprocating movement, achieving multi-point contact between the inner grinding gun 333 and the workpiece, thus improving the service life of the alloy rotary file. The inner X2 axis motion assembly includes an inner X2 axis horizontal plate 306, an inner X2 axis vertical plate 307, an inner X2 axis spring force block 326, an inner X2 axis radial adjustment block 327, an adjusting screw, an anti-loosening spring, and a linear guide slider, which are fixed on the inner X1 axis horizontal plate 305. When changing workpieces, the inner X2 axis horizontal plate 306 can be moved radially by adjusting the screw to accommodate the size of various workpieces. The inner X3 axis motion assembly includes a turntable 330, an inner X3 axis vertical plate 309, an inner X3 axis negative limit 331, an inner grinding gun fixing seat 332, an inner X3 axis template 323, and an inner X3 axis template angle adjustment block, which are fixed on the inner Z2 axis vertical plate 308 and are responsible for the lateral swing of the inner grinding gun 333 to grind the concave and convex contours of the workpiece's inner cavity.

[0040] The inner chamfering module 3 also includes a torque balancing device, which applies a suitable torque to the inner grinding gun 333, causing it to move along the contour of the workpiece's inner cavity. The torque balancing device includes a balance rod 318, a balance rod seat 319, and a counterweight rod 320, fixed to the inner X2 axis horizontal plate 306. One end of the balance rod 318 is supported in the torque balancing fulcrum 321, and the other end is connected to the counterweight rod 320. By adjusting the counterweight rod 320, a relative balance is achieved with the weight of the inner Z2 axis motion assembly and the inner X3 axis motion assembly, balancing the force exerted by the inner grinding gun 333 on different positions within the workpiece's inner cavity. The chamfer of the workpiece's inner cavity is a convex contour extending deep into the cavity. When the inner grinding gun 333 is working, the inner X3 axis template 323 drives the inner grinding gun 333 to move longitudinally, achieving the function of removing burrs from the workpiece's inner cavity chamfer. The torque balancing device drives the inner X3 axis motion assembly to move in the negative direction, which can improve the sensitivity of the inner grinding gun 333 to fit the irregular contour of the workpiece cavity, and realize the form grinding method that fits the irregular contour of the workpiece cavity.

[0041] The inner Y-axis motion assembly includes an inner Y-axis horizontal plate 301, an inner Y-axis vertical plate 302, an inner Y-axis positive limiting block 314, an inner Y-axis negative force-bearing block 315, an inner Y-axis negative limiting block 316, an inner Y-axis return spring support rod 317, an inner Y-axis positive force-bearing block 334, a return spring, and a linear guide slider, all fixed to the base plate of the equipment frame 6. Through the cylinder movement of the loading / unloading support module 5 in conjunction with the return spring, the Y-axis of the inner chamfering module 3 reciprocates between the working position and the clearance position, facilitating smooth workpiece loading and unloading.

[0042] The inner Z-axis motion assembly includes an inner Z1-axis motion assembly and an inner Z2-axis motion assembly. The inner Z1-axis motion assembly includes an inner Z1-axis vertical plate 303, an inner Z1-axis horizontal plate 304, a vertical push rod 310, a horizontal push rod 311, a power plate push rod 312, an inner Z1-axis cylinder push rod 313, and a linear guide slider, fixed to the inner Y-axis vertical plate 302 and supported on the Z1-axis power plate 102 by the power plate push rod 312. When the Z1-axis power plate 102 rotates, influenced by the three V-shaped grooves 109, the inner Z1-axis motion assembly performs longitudinal lifting and lowering motion. Simultaneously, the inner X1-axis horizontal plate 305, influenced by the inner X1-axis template 322 and the inner X1-axis return spring, performs transverse reciprocating motion, achieving multi-point contact between the inner grinding gun 333 and the workpiece, thus improving the service life of the alloy rotary file. After processing, the loading / unloading support module 5 uses a cylinder to push the inner Z1 axis cylinder push rod 313, driving the inner Z1 axis motion assembly to rise longitudinally, causing the inner grinding gun 333, located inside the workpiece cavity, to rise and leave the workpiece without affecting the forward movement of the inner Y axis motion assembly to the clearance position. The inner Z2 axis motion assembly includes an inner Z2 axis vertical plate 308, a torque balance fulcrum 321, and a linear guide slider, fixed on the inner X2 axis vertical plate 307, responsible for the longitudinal movement of the inner grinding gun 333 to remove burrs from the chamfered edges of the inner cavity.

[0043] The outer chamfering module 4 includes an outer X-axis motion component, an outer Z-axis motion component, and an outer grinding gun 423. The grinding gun 423 is mounted on the outer Z-axis motion component. When the workpiece rotates, the outer X-axis motion component uses a contour rod to conform to the workpiece, driving the outer X-axis motion component to move laterally. The outer Z-axis motion component drives the outer grinding gun 423 to move longitudinally, thereby removing burrs from the outer edge of the workpiece end face.

[0044] The outer X-axis motion assembly includes an outer X1-axis motion assembly, an outer X2-axis motion assembly, and an outer X3-axis motion assembly. The outer X1-axis motion assembly includes an outer X1-axis horizontal plate 401, an outer X1-axis positive limiting block 402, an outer X1-axis return spring support rod 403, an outer X1-axis positive force-bearing block 404, an outer X1-axis negative limiting block 405, an outer X1-axis cylinder push rod 406, an outer X1-axis release spring, and a linear guide slider, all fixed to the base plate of the equipment frame 6. The outer X1-axis reciprocating motion of the outer chamfering module 4 is achieved by the cylinder push of the loading / unloading support module 5 in conjunction with the outer X1-axis release spring, facilitating smooth workpiece loading and unloading. The outer X2 axis motion assembly includes an outer X2 axis horizontal plate 407, an outer X2 axis vertical plate 408, an outer X2 axis base 409, a horizontal plate positioning 410, and an outer X2 axis radial adjustment block 411, which are fixed on the outer X1 axis horizontal plate 401. When changing workpieces, the outer grinding gun 423 is moved radially by adjusting screws to adapt to the size of various workpieces. The outer X3 axis motion assembly includes an outer X3 axis horizontal plate 420, an outer X3 axis contouring rod 421, an outer X3 axis negative limit 422, and a linear guide slider, which are fixed on the outer Z1 axis horizontal plate 412. The outer X3 axis contouring rod 421 fits against the workpiece, driving the outer X3 axis motion assembly to move laterally. This, in conjunction with the outer Z1 axis motion assembly, drives the outer grinding gun 423 to move longitudinally, achieving the function of removing burrs from the outer edge of the workpiece end face. The longitudinal movement of the outer grinding gun 423 causes the alloy rotary file to make multi-point contact with the workpiece, improving its service life.

[0045] The outer Z-axis motion assembly includes an outer Z1-axis motion assembly and an outer Z2-axis motion assembly. The outer Z1-axis motion assembly includes an outer Z1-axis horizontal plate 412, an outer Z1-axis vertical plate 413, a longitudinal adjustment block 414, and a linear guide slider, fixed to the outer Z2-axis vertical plate 408. During model changeover and debugging, the outer grinding gun 423 is moved longitudinally by adjusting screws to adjust the grinding angle to a suitable size. The outer Z2-axis motion assembly includes an outer Z2-axis vertical plate 415, an outer Z2-axis horizontal plate 416, an outer Z2-axis template 417, an outer Z2-axis template push rod 418, an outer grinding gun fixing seat 419, and a linear guide slider, fixed to the outer Z1-axis vertical plate 413. The outer Z2 axis motion assembly uses its own weight to press the outer Z2 axis template 417 onto the outer Z2 axis template push rod 418. When the workpiece rotates, it drives the outer Z2 axis template push rod 418 to move laterally. According to the tilt angle of the outer Z2 axis template 417, the outer Z2 axis motion assembly and the outer grinding gun 423 will move longitudinally at the same time, so that the alloy rotary file can achieve multi-point contact with the workpiece and improve its service life.

[0046] The loading / unloading support module 5 includes a Y-axis horizontal plate 501, a cylinder connecting rod 502, an inner module pushing rod 503, an outer module pushing rod 504, a cylinder connecting block 505, a double-rod cylinder, and a linear guide slider. The double-rod cylinder is fixed below the bottom plate of the equipment frame 6 and is connected to the Y-axis horizontal plate 501 through the cylinder connecting block 505 and the cylinder connecting rod 502. The Y-axis horizontal plate 501 is fixed to the bottom plate of the equipment frame 6 through the linear guide slider. The inner module pushing rod 503 and the outer module pushing rod 504 are fixed on both sides of the Y-axis horizontal plate 501. When the double-rod cylinder is pushed out, the slope of the upper surface of the inner module pushing rod 503 cooperates with the inner Z1 axis cylinder push rod 313 to provide positive upward force on the Z-axis of the inner chamfering module 3. After rising to the top, it provides positive movement force on the Y-axis, so that the inner chamfering module 3 can be displaced to a non-interference area during workpiece loading and unloading. When the double-rod cylinder returns to its original position, the slope of the side surface of the outer module push rod 504, in conjunction with the outer X1 axis cylinder push rod 406, provides negative X-axis movement power to the outer chamfering module 4, causing the outer chamfering module 4 to move to the working position to perform work.

[0047] In addition, the equipment frame 6 consists of a set of square tube steel frame and a base plate, with all functional modules mounted on the base plate, forming the main frame of the equipment. The electric control power system 7 consists of a geared motor, synchronous pulley and synchronous belt transmission device, electrical control components, and other parts.

[0048] The electric control power system 7 is responsible for controlling the execution of each functional module according to the PLC programming instructions in automatic mode. The action steps are as follows: ① Clamping the workpiece: The workpiece is placed into the three-jaw pneumatic chuck 101, and clamping is controlled by a foot switch. ② Processing the workpiece: Pressing the start button activates the double-rod cylinder of the loading / unloading support module 5 to return to its original position, driving the inner and outer chamfering modules to move to the processing position. This triggers the position information sensor, and the inner grinding gun 333, outer grinding gun 423, and spindle start synchronously to begin the workpiece chamfering process. ③ Processing is completed: After the spindle rotates one revolution to the origin, the spindle position information sensor is triggered, and the spindle motor, inner grinding gun 333, and outer grinding gun 423 stop synchronously. The double-rod cylinder of the loading / unloading support module 5 initiates the push-out action, driving the inner and outer chamfering modules away from the workpiece. This triggers the position information sensor, and the three-jaw pneumatic chuck 101 automatically releases, completing one action cycle. The electric control power system 7 is also responsible for starting and stopping each functional action in manual mode for easy debugging. The electric control power system 7 is equipped with functions such as abnormal air pressure protection and safety light curtain detection, which improves the safety of equipment operation.

[0049] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the present invention, and the patent protection scope of the present invention should be defined by the claims.

Claims

1. An automatic burr removal device for irregular contours, characterized in that, include: Equipment frame; A spindle module, which is mounted on the equipment frame, is used to fasten and drive the workpiece to rotate; A workpiece positioning module, which is installed on the equipment frame, is used to position the clamping height of the workpiece. An internal chamfering module, which is mounted on the equipment frame, is used to move along the contour of the workpiece's inner cavity to remove burrs from the inner cavity. An external chamfering module, which is mounted on the equipment frame, is used to perform contouring motion along the outer contour of the workpiece to remove external burrs; A loading and unloading support module is installed on the equipment frame and is used to assist in loading and unloading workpieces. And the electric power system, which provides drive for each module.

2. The automatic burr removal device for irregular contours as described in claim 1, characterized in that: The spindle module includes a spindle base, a spindle turntable mounted on the spindle base, a Z1 axis power disk locked to the spindle turntable, and a three-jaw pneumatic chuck connected to the Z1 axis power disk; the upper surface of the Z1 axis power disk has three V-shaped grooves evenly distributed to provide lifting power for the inner chamfer module.

3. The automatic burr removal device for irregular contours as described in claim 1, characterized in that: The workpiece positioning module includes a main base fixed to the equipment frame, a radial adjustment block movably connected to the main base, an L-shaped base fixed to the radial adjustment block, an elastic positioning mechanism mounted on the L-shaped base, and a lever linkage linked to the elastic positioning mechanism. The elastic positioning mechanism includes a housing, a positioning rod disposed within the housing, a self-lubricating copper sleeve sleeved outside the positioning rod, and a pressure spring acting on the positioning rod. Moving the lever allows the positioning rod to extend and retract within the self-lubricating copper sleeve, and the pressure spring is used to reset the positioning rod.

4. The automatic burr removal device for irregular contours as described in claim 1, characterized in that: The inner chamfering module includes an inner grinding gun, and an inner X-axis motion component, an inner Y-axis motion component, and an inner Z-axis motion component for driving the movement of the inner grinding gun.

5. The automatic burr removal device for irregular contours as described in claim 4, characterized in that: The inner X-axis motion assembly includes an inner X1-axis motion assembly, an inner X2-axis motion assembly, and an inner X3-axis motion assembly; The inner X1 axis motion assembly includes an inner X1 axis horizontal plate, an inner X1 axis template that cooperates with the inner X1 axis horizontal plate, and a return spring that acts on the inner X1 axis horizontal plate. The inner X2 axis motion assembly includes an inner X2 axis cross plate and an adjusting screw for adjusting the radial position of the inner X2 axis cross plate, which is fixed to the inner X1 axis cross plate. The inner X3 axis motion assembly includes a turntable, an inner grinding gun mounting base, and an angle-adjustable inner X3 axis template, which is used to drive the inner grinding gun to swing laterally and grind the concave and convex contours of the workpiece's inner cavity. The inner chamfering module also includes a torque balancing device, which includes a balance bar, a balance bar seat, and a counterweight bar, fixed to the inner X2 axis horizontal plate; used to balance the torque of the inner grinding gun and its drive assembly, and to equalize the force of the inner grinding gun contacting different positions of the workpiece cavity.

6. The automatic burr removal device for irregular contours as described in claim 4, characterized in that: The inner Z-axis motion assembly includes an inner Z1-axis motion assembly and an inner Z2-axis motion assembly; The inner Z1 axis motion assembly includes an inner Z1 axis vertical plate, an inner Z1 axis horizontal plate, a vertical push rod, a horizontal push rod, an inner Z1 axis cylinder push rod, and a power disk push rod that contacts the Z1 axis power disk of the main spindle module. The inner Z2 axis motion assembly includes an inner Z2 axis vertical plate, a torque balance fulcrum, and a linear guide slider, which are fixed on the inner X2 axis vertical plate and are responsible for the longitudinal movement of the inner grinding gun to remove burrs from the chamfered edges of the inner cavity.

7. The automatic burr removal device for irregular contours as described in claim 1, characterized in that: The external chamfering module includes an external grinding gun, an external X-axis motion assembly and an external Z-axis motion assembly that drive the external grinding gun to move. When the workpiece rotates, the external X-axis motion assembly uses a contour rod to fit the workpiece, driving the external X-axis motion assembly to move laterally. The external Z-axis motion assembly drives the external grinding gun to move longitudinally, thereby removing burrs from the outer edge of the workpiece end face.

8. The automatic burr removal device for irregular contours as described in claim 7, characterized in that: The outer X-axis motion assembly includes an outer X1-axis motion assembly, an outer X2-axis motion assembly, and an outer X3-axis motion assembly; The outer X1 axis motion assembly is fixed to the base plate of the equipment frame; the outer chamfering module reciprocates along the X-axis by being pushed by the cylinder of the loading and unloading support module in conjunction with the outer X1 axis displacement spring. The outer X2 axis motion assembly is fixed to the outer X1 axis horizontal plate. When changing the workpiece, the outer grinding gun is moved radially by adjusting the screw to adapt to the size of various workpieces. The outer X3 axis motion assembly is fixed to the outer Z1 axis horizontal plate. The outer X3 axis contour rod is attached to the workpiece, and the outer X3 axis motion assembly is driven to move laterally. In conjunction with the outer Z axis motion assembly, the outer grinding gun is driven to move longitudinally, thereby realizing the function of removing burrs from the outer edge of the workpiece end face.

9. The automatic burr removal device for irregular contours as described in claim 7, characterized in that: The outer Z-axis motion assembly includes an outer Z1-axis motion assembly and an outer Z2-axis motion assembly; The outer Z1 axis motion assembly is fixed to the outer X2 axis vertical plate; during model change and debugging, the outer grinding gun is moved longitudinally by adjusting the screw to adjust the grinding angle to a suitable size; The outer Z2 axis motion assembly is fixed to the outer Z1 axis vertical plate; the weight of the outer Z2 axis motion assembly itself causes the outer Z2 axis template to press against the outer Z2 axis template push rod. When the workpiece rotates, it will drive the outer Z2 axis template push rod to move laterally. According to the tilt angle of the outer Z2 axis template, the outer Z2 axis motion assembly and the outer grinding gun will move longitudinally at the same time.

10. The automatic burr removal device for irregular contours as described in claim 1, characterized in that: The loading and unloading support module includes a double-rod cylinder, a cylinder connecting block and a cylinder connecting rod connected to the double-rod cylinder, a Y-axis horizontal plate connected to the cylinder connecting rod, and an inner module push rod and an outer module push rod fixed on both sides of the Y-axis horizontal plate.

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