Edge grinding device for curved surface casting

Abstract

The invention belongs to the technical field of casting edge grinding, and particularly relates to a curved surface casting edge grinding device which comprises a curved surface casting body, an adjustable rolling supporting mechanism, a double-point alternating type automatic arc mechanism, a flywheel type arc induction mechanism and a grinding chamfering assembly. The double-point alternating type automatic arc mechanism and the flywheel type arc induction mechanism are provided, the position of the arc section can be recognized and induced through the cross flywheel body matched with the arc section of the curved surface casting body, and when the curved surface casting body is about to reach the arc section, the flywheel type arc induction mechanism is started. The positions of the flywheel type arc induction mechanism and the curved surface casting body are relatively fixed in a mode of locking an external roller, then the center of the arc section of the curved surface casting body is used as the circle center, the T-shaped support is controlled to swing, and therefore ridge grinding of the arc section is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of casting edge grinding, and in particular relates to an edge grinding device for curved castings. Background Art

[0002] Most motor housings are cast, and when the castings are just demoulded, the edges often have burrs. Therefore, in order to ensure the accuracy of the subsequent assembly process and avoid scratching the operator, deburring is required before assembly. For such parts that are not fixed on the machine tool, if the edge of the casting is a straight line, a chamferer is often used for chamfering. However, for parts with curved edges that are inconvenient to use a chamferer, the efficiency and effect of manual chamfering are difficult to guarantee. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes an edge grinding device for curved castings which is simple to operate and can automatically perform corner positioning; the outer casing of the motor is mostly composed of tangent straight line parts and arc parts; the grinding of straight line segments is generally simple, but for the grinding of arc segments, the current manual grinding devices are difficult to ensure the positioning accuracy. In order to solve this problem, the present invention proposes a double-point alternating automatic arc mechanism and a flywheel arc sensing mechanism. Through a cross flywheel body matching the arc segment of the curved casting body, the position of the arc segment can be identified and sensed. When the arc segment is about to be reached, the position between the flywheel arc sensing mechanism and the curved casting body is relatively fixed by locking the external roller, and then the center of the arc segment of the curved casting body is used as the center of the circle to control the T-shaped bracket to swing, thereby achieving the grinding of the edges of the arc segment.

[0004] Moreover, in order to simplify the steps of manual operation, the present invention also creatively proposes a trigger switch assembly, which controls the on and off of the adsorption electromagnet by the contact between contact one and contact two, thereby automatically controlling the sliding and extension of the hollow locking pin during the rotation and swinging of the T-shaped bracket relative to the cross flywheel body; thus, without the need for manual operation, the combination and separation control of the first hollow protrusion and the second slot, as well as the combination and separation control of the second hollow protrusion and the first slot are achieved only through an ingenious mechanical structure.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes an edge grinding device for a curved casting, comprising a curved casting body, an adjustable rolling support mechanism, a double-point alternating automatic arc mechanism, a flywheel arc sensing mechanism and a grinding and chamfering assembly, wherein the adjustable rolling support mechanism is rollingly arranged on the curved casting body, the double-point alternating automatic arc mechanism is arranged on the adjustable rolling support mechanism, the flywheel arc sensing mechanism can be detachably arranged on the double-point alternating automatic arc mechanism, and the grinding and chamfering assembly is arranged on the adjustable rolling support mechanism.

[0006] Furthermore, the adjustable rolling support mechanism includes a rolling support assembly, an adjusting clamping assembly and a top support assembly, the rolling support assembly is in rolling contact with the curved casting body, the adjusting clamping assembly is arranged on the rolling support assembly, and the top support assembly is arranged on the rolling support assembly.

[0007] Preferably, the rolling support assembly includes a grooved crossbeam, a T-shaped bracket, a fixed fork frame and a movable roller. The grooved crossbeam and the T-shaped bracket are fixedly connected. The grooved crossbeam is provided with a sliding adjustment groove. The sliding adjustment of the grinding and chamfering assembly is arranged in the sliding adjustment groove. A circular through hole and a countersunk circular hole are respectively provided at both ends of the T-shaped bracket. The fixed fork frame is fixedly connected to the T-shaped bracket. One of the movable rollers is rotatably arranged in the fixed fork frame.

[0008] As a further preferred embodiment of the present invention, the adjusting clamping assembly includes an adjusting base plate, a movable fork frame and an adjusting stud. The adjusting base plate is fixedly connected to the grooved crossbeam. The adjusting stud and the adjusting base plate are threadedly connected. The adjusting stud is rotatably arranged in the movable fork frame. Three of the movable rollers are rotatably arranged in the movable fork frame. By rotating the adjusting stud, the distance between the movable fork frame and the curved casting body can be adjusted.

[0009] The movable rollers located on both sides of the curved casting body can contact and squeeze the curved casting body from both sides, thereby achieving the technical purpose of guiding and limiting the movement of the device according to the contour of the curved casting body itself during linear motion.

[0010] There are four movable rollers, two of which are symmetrically distributed relative to the middle curved casting body, and the third and fourth are located outside the curved casting body and behind the movement direction. During linear motion, at least three movable rollers are in contact with the curved casting body at the same time, which can ensure that the direction of the T-shaped bracket must be perpendicular to the curved casting body of the current section. Only when the position and direction of the T-shaped bracket are guaranteed can the processing position of the grinding and chamfering component be guaranteed to be correct.

[0011] As a further preferred embodiment of the present invention, the top support assembly includes a top fork frame and a top roller, the top fork frame is fixedly connected to the bottom of the grooved crossbeam, the top roller is rotatably arranged in the top fork frame, and the top fork frame is in rolling contact with the top surface of the curved casting body.

[0012] The top of the curved casting body is in rolling contact with the top roller, which can make the movement of the T-shaped bracket smoother on the one hand, and on the other hand ensure the fixation of the relative position of the grinding chamfering component and the top surface of the curved casting body, thereby ensuring the grinding effect of the grinding chamfering component.

[0013] Furthermore, the two-point alternating automatic arc mechanism includes a temporary locking component and a trigger switch component, the temporary locking component is arranged on the rolling support component, and the trigger switch component is fixed in the rolling support component.

[0014] Preferably, the temporary locking assembly includes a first card slot, a second card slot and an adsorption-type electromagnet, the first card slot and the second card slot are fixedly connected to the bottom of the T-shaped bracket, the first card slot is located at one end where the circular through hole is located, the second card slot is located at one end where the countersunk circular hole is located, and the adsorption-type electromagnet is engaged in the second card slot.

[0015] The first card slot is made of elastic material, and the second hollow protrusion can be inserted into or separated from the first card slot when the relative pressure between the second hollow protrusion and the first card slot is relatively large. When there is no relative pressure or the relative pressure is relatively small between the second hollow protrusion and the first card slot, the second hollow protrusion will not be separated from the first card slot; The material elasticity of the second card slot is smaller than that of the first card slot. The temporary locking and releasing of the central locking assembly in the second card slot are controlled by the extension and retraction of the hollow lock pin. The movement of the trigger switch assembly can control whether the adsorption electromagnet is energized or not.

[0016] As a further preferred embodiment of the present invention, the trigger switch assembly includes a switch housing, contact one, a lifting contact head, a first return spring, contact two and a second return spring, the switch housing is fixed in a circular through hole, the contact one is fixed to the inner top of the switch housing, the lifting contact head is snap-fitted and slidably arranged in the switch housing, the first return spring is arranged between contact one and the lifting contact head, the upper and lower ends of the first return spring are respectively provided with a sleeve portion and a slope portion, the contact two is snap-fitted and slidably arranged in the sleeve portion, the second return spring is arranged between contact two and the lifting contact head, and there is a sliding resistance between contact two and the sleeve portion.

[0017] Since there is resistance to the sliding of contact 2 in the sleeve portion, when the lifting contact head slowly slides in the switch housing, contact 1 and contact 2 will remain in contact, and when the lifting contact head quickly leaves contact 1, contact 2 will temporarily follow the lifting contact head and leave contact 1, and then slowly reset and contact contact 1 again.

[0018] Furthermore, the flywheel type arc sensing mechanism includes a cross flywheel body, a flexible limiting magnet, a center locking assembly and an adaptive locking roller assembly, the flexible limiting magnet is arranged on the cross flywheel body and the rolling support assembly, the center locking assembly is arranged at the center position of the cross flywheel body, and the adaptive locking roller assembly is evenly distributed in a ring at the end of the cross flywheel body.

[0019] Preferably, one of the flexible limiting magnets is fixed to the bottom of the T-shaped bracket, and the other flexible limiting magnets are fixed to the cross flywheel body, and when the flexible limiting magnets are close to each other, magnetic repulsion will occur; Under the action of the flexible limiting magnet, when the second hollow protrusion is combined with the first slot and the first hollow protrusion is separated from the second slot, the cross flywheel body can only rotate freely within a certain range and cannot rotate in a circle completely freely, thereby avoiding the problem of jamming caused by excessive rotation angle deviation of the cross flywheel body.

[0020] As a further preferred embodiment of the present invention, the center locking assembly includes a first hollow protrusion, a first reset spring, a hollow locking pin and a hydraulic conduit, the first hollow protrusion is fixedly connected to the center position of the cross flywheel body, the first hollow protrusion is detachably engaged in the second slot, the hollow locking pin is slidably engaged in the first hollow protrusion, the first reset spring is arranged between the first hollow protrusion and the hollow locking pin, an armature part is arranged on the top of the hollow locking pin, the adsorption type electromagnet can generate an attraction to the armature part when energized, and one end of the hydraulic conduit is arranged in the first hollow protrusion.

[0021] The locking and separation between the center locking assembly and the second slot can be controlled by the telescopic sliding of the hollow locking pin. When the center locking assembly is locked in the second slot, the T-shaped bracket will move in a circle with the center of the cross flywheel body as the center, thereby achieving the limitation and guidance of the T-shaped bracket when the arc-shaped curved surface of the curved casting body is polished.

[0022] As a further preferred embodiment of the present invention, the adaptive locking roller assembly includes a second hollow convex head, a third return spring, a locking plate, a lifting roller and an external roller, the second hollow convex head is fixed to the end of the cross flywheel body, the second hollow convex head is detachably engaged in the first slot, the locking plate is fixed to the bottom of the second hollow convex head, the lifting roller is lifted and lowered in the second hollow convex head, the third return spring is arranged between the second hollow convex head and the lifting roller, the external roller is fixed to the lifting roller, and the external roller is in rolling contact with the curved casting body.

[0023] Through the hydraulic linkage of the hydraulic duct, all external rollers can be automatically locked when the center locking assembly is in a locked state. There is friction between the external rollers and the curved casting body. Therefore, when the external rollers are locked, the position of the cross flywheel body and the position of its own center point can be kept fixed, thereby ensuring that the center of the T-shaped bracket is fixed during circular motion until it is processed to the straight area again.

[0024] Furthermore, the grinding and chamfering assembly includes a grinding adjustment plate, a grinding motor and a grinding wheel, the grinding adjustment plate is snap-fitted and slidably arranged in a sliding adjustment groove, the grinding motor is fixedly connected to the grinding adjustment plate, the grinding wheel is arranged on the output shaft of the grinding motor, and the grinding adjustment plate can be slidably adjusted and locked in the sliding adjustment groove.

[0025] The beneficial effects achieved by the present invention using the above structure are as follows: (1) The movable rollers located on both sides of the curved casting body can contact and squeeze the curved casting body from both sides, thereby achieving the technical purpose of guiding and limiting the movement of the device according to the contour of the curved casting body itself during linear motion.

[0026] (2) There are four movable rollers, two of which are symmetrically distributed relative to the middle curved casting body, and the third and fourth are located outside the curved casting body and behind the direction of movement. During linear motion, at least three movable rollers are in contact with the curved casting body at the same time, which can ensure that the direction of the T-shaped bracket must be perpendicular to the curved casting body of the current section. Only when the position and direction of the T-shaped bracket are guaranteed can the processing position of the grinding and chamfering component be guaranteed to be correct.

[0027] (3) The top of the curved casting body is in rolling contact with the top roller, which can make the movement of the T-shaped bracket smoother on the one hand, and on the other hand, ensure the fixation of the relative position of the grinding chamfering component and the top surface of the curved casting body, thereby ensuring the grinding effect of the grinding chamfering component.

[0028] (4) The first card slot is made of elastic material. When the relative pressure between the second hollow protrusion and the first card slot is large, the second hollow protrusion can be inserted into the first card slot or separated from the first card slot. When there is no relative pressure or the relative pressure is small between the second hollow protrusion and the first card slot, the second hollow protrusion will not be separated from the first card slot.

[0029] (5) The material elasticity of the second card slot is smaller than that of the first card slot. The temporary locking and release of the central locking assembly in the second card slot are controlled by the extension and retraction of the hollow lock pin. The movement of the trigger switch assembly can control whether the adsorption electromagnet is energized or not.

[0030] (6) Since there is resistance to the sliding of contact 2 in the sleeve, when the lifting contact head slides slowly in the switch housing, contact 1 and contact 2 will remain in contact. When the lifting contact head quickly leaves contact 1, contact 2 will temporarily follow the lifting contact head and leave contact 1, and then slowly reset and contact contact 1 again.

[0031] (7) Under the action of the flexible limiting magnet, when the second hollow protrusion is combined with the first slot and the first hollow protrusion is separated from the second slot, the cross flywheel body can only rotate freely within a certain range and cannot rotate completely freely in a circle, thereby avoiding the problem of jamming caused by excessive deviation of the rotation angle of the cross flywheel body.

[0032] (8) The locking and separation between the center locking assembly and the second slot can be controlled by the telescopic sliding of the hollow locking pin. When the center locking assembly is locked in the second slot, the T-shaped bracket will move in a circle with the center of the cross flywheel body as the center, thereby achieving the limitation and guidance of the T-shaped bracket when the arc-shaped curved surface of the curved casting body is polished.

[0033] (9) Through the hydraulic linkage of the hydraulic guide tube, all external rollers can be automatically locked when the center locking assembly is in a locked state. There is friction between the external rollers and the curved casting body. Therefore, when the external rollers are locked, the position of the cross flywheel body and the position of its own center point can be kept fixed, thereby ensuring that the center of the T-shaped bracket is fixed during circular motion until it is processed to the straight area again. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A three-dimensional diagram of an edge grinding device for a curved casting provided by the present invention; Figure 2 A front view of an edge grinding device for a curved casting provided by the present invention; Figure 3 It is a left view of an edge grinding device for a curved casting proposed by the present invention; Figure 4A top view of an edge grinding device for a curved casting provided by the present invention; Figure 5 for Figure 3 A cross-sectional view along the cutting line AA; Figure 6 for Figure 5 A cross-sectional view along the cutting line BB; Figure 7 for Figure 2 A cross-sectional view along the cutting line CC; Figure 8 An exploded schematic diagram of an edge grinding device for a curved casting proposed by the present invention; Fig. 9 for Figure 8 A partial enlarged view of point Ⅰ in the middle; Fig.10 for Figure 5 A partial enlarged view of the middle II; Fig.11 for Figure 6 A partial enlarged view of the middle part III; Fig.12 for Figure 5 A partial enlarged view of the middle IV; Fig.13 for Figure 8 A partial enlarged view of point V in the middle.

[0035] Among them, 1. curved casting body, 2. adjustable rolling support mechanism, 3. double-point alternating automatic arc mechanism, 4. flywheel arc sensing mechanism, 5. grinding chamfering assembly, 6. rolling support assembly, 7. adjustment clamping assembly, 8. top support assembly, 9. grooved beam, 10. T-shaped bracket, 11. fixed fork frame, 12. movable roller, 13. adjustment base plate, 14. movable fork frame, 15. adjustment stud, 16. top fork frame, 17. top roller, 18. sliding adjustment groove, 19. circular through hole, 20. countersunk circular hole, 21. temporary locking assembly, 22. trigger switch assembly, 23. first card slot, 24. second card slot, 25. adsorption type Electromagnet, 26. Switch housing, 27. Contact one, 28. Lifting contact head, 29. First return spring, 30. Contact two, 31. Second return spring, 32. Ramp portion, 33. Sleeve portion, 34. Cross flywheel body, 35. Flexible limit magnet, 36. Center locking assembly, 37. Adaptive locking roller assembly, 38. First hollow convex head, 39. First return tension spring, 40. Hollow locking pin, 41. Hydraulic conduit, 42. Second hollow convex head, 43. Third return spring, 44. Locking plate, 45. Lifting roller, 46. External roller, 47. Armature portion, 48. Grinding adjustment plate, 49. Grinding motor, 50. Grinding wheel.

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0039] like Figure 1 to Figure 13 As shown, the present invention proposes an edge grinding device for a curved casting, comprising a curved casting body 1, an adjustable rolling support mechanism 2, a double-point alternating automatic arc mechanism 3, a flywheel type arc sensing mechanism 4 and a grinding and chamfering assembly 5, wherein the adjustable rolling support mechanism 2 is rollingly arranged on the curved casting body 1, the double-point alternating automatic arc mechanism 3 is arranged on the adjustable rolling support mechanism 2, the flywheel type arc sensing mechanism 4 can be detachably arranged on the double-point alternating automatic arc mechanism 3, and the grinding and chamfering assembly 5 is arranged on the adjustable rolling support mechanism 2.

[0040] The adjustable rolling support mechanism 2 includes a rolling support assembly 6, an adjusting clamping assembly 7 and a top support assembly 8. The rolling support assembly 6 is in rolling contact with the curved casting body 1. The adjusting clamping assembly 7 is arranged on the rolling support assembly 6, and the top support assembly 8 is arranged on the rolling support assembly 6.

[0041] The rolling support assembly 6 includes a grooved crossbeam 9, a T-shaped bracket 10, a fixed fork frame 11 and a movable roller 12. The grooved crossbeam 9 and the T-shaped bracket 10 are fixedly connected. The grooved crossbeam 9 is provided with a sliding adjustment groove 18. The grinding and chamfering assembly 5 is slidingly adjusted in the sliding adjustment groove 18. A circular through hole 19 and a countersunk circular hole 20 are respectively provided at both ends of the T-shaped bracket 10. The fixed fork frame 11 is fixedly connected to the T-shaped bracket 10, and one of the movable rollers 12 is rotatably arranged in the fixed fork frame 11.

[0042] The grinding and chamfering assembly 5 includes a grinding adjustment plate 48, a grinding motor 49 and a grinding wheel 50. The grinding adjustment plate 48 is slidably engaged in the sliding adjustment groove 18, the grinding motor 49 is fixedly connected to the grinding adjustment plate 48, and the grinding wheel 50 is arranged on the output shaft of the grinding motor 49. The grinding adjustment plate 48 can be slidably adjusted and locked in the sliding adjustment groove 18.

[0043] The adjusting clamping assembly 7 includes an adjusting base plate 13, a movable fork frame 14 and an adjusting stud 15. The adjusting base plate 13 is fixedly connected to the grooved cross beam 9. The adjusting stud 15 and the adjusting base plate 13 are threadedly connected. The adjusting stud 15 is rotatably arranged in the movable fork frame 14. Three of the movable rollers 12 are rotatably arranged in the movable fork frame 14. By rotating the adjusting stud 15, the distance between the movable fork frame 14 and the curved casting body 1 can be adjusted.

[0044] The movable rollers 12 located on both sides of the curved casting body 1 can contact and squeeze the curved casting body 1 from both sides, thereby achieving the technical purpose of guiding and limiting the movement of the device according to the contour of the curved casting body 1 during linear motion.

[0045] There are four movable rollers 12, two of which are symmetrically distributed relative to the middle curved casting body 1, and the third and fourth are located outside the curved casting body 1 and behind the movement direction. During linear motion, at least three movable rollers 12 are in contact with the curved casting body 1 at the same time, which can ensure that the direction of the T-shaped bracket 10 is necessarily perpendicular to the curved casting body 1 of the current section. Only when the position and direction of the T-shaped bracket 10 are guaranteed can the processing position of the grinding and chamfering component 5 be guaranteed to be correct.

[0046] The top support assembly 8 includes a top fork frame 16 and a top roller 17. The top fork frame 16 is fixedly connected to the bottom of the grooved crossbeam 9. The top roller 17 is rotatably arranged in the top fork frame 16. The top fork frame 16 is in rolling contact with the top surface of the curved casting body 1.

[0047] The top of the curved casting body 1 is in rolling contact with the top roller 17, which can make the movement of the T-shaped bracket 10 smoother on the one hand, and on the other hand ensure the fixation of the relative position of the grinding and chamfering component 5 and the top surface of the curved casting body 1, thereby ensuring the grinding effect of the grinding and chamfering component 5.

[0048] The double-point alternating automatic arc mechanism 3 comprises a temporary locking component 21 and a trigger switch component 22 . The temporary locking component 21 is arranged on the rolling support component 6 , and the trigger switch component 22 is fixed in the rolling support component 6 .

[0049] The temporary locking assembly 21 includes a first card slot 23, a second card slot 24 and an adsorption type electromagnet 25. The first card slot 23 and the second card slot 24 are fixedly connected to the bottom of the T-shaped bracket 10. The first card slot 23 is located at one end where the circular through hole 19 is located, and the second card slot 24 is located at one end where the countersunk circular hole 20 is located. The adsorption type electromagnet 25 is engaged in the second card slot 24.

[0050] The first card slot 23 is made of elastic material. When the relative pressure between the second hollow protrusion 42 and the first card slot 23 is relatively large, the second hollow protrusion 42 can be inserted into the first card slot 23 or separated from the first card slot 23. When there is no relative pressure or the relative pressure is relatively small between the second hollow protrusion 42 and the first card slot 23, the second hollow protrusion 42 will not be separated from the first card slot 23. The material elasticity of the second slot 24 is less than that of the first slot 23 , and the temporary locking and releasing of the central locking assembly 36 in the second slot 24 is controlled by the extension and retraction of the hollow lock pin 40 ; the movement of the trigger switch assembly 22 can control whether the adsorption electromagnet 25 is energized or not.

[0051] The trigger switch assembly 22 includes a switch housing 26, a contact 1 27, a lifting contact head 28, a first return spring 29, a contact 2 30 and a second return spring 31. The switch housing 26 is fixedly connected to the circular through hole 19, the contact 1 27 is fixedly connected to the inner top of the switch housing 26, the lifting contact head 28 is slidably arranged in the switch housing 26, the first return spring 29 is arranged between the contact 1 27 and the lifting contact head 28, and the upper and lower ends of the first return spring 29 are respectively provided with a sleeve portion 33 and a slope portion 32, the contact 2 30 is slidably arranged in the sleeve portion 33, the second return spring 31 is arranged between the contact 2 30 and the lifting contact head 28, and there is a sliding resistance between the contact 2 30 and the sleeve portion 33.

[0052] Since there is resistance to the sliding of contact 2 30 in the sleeve portion 33, when the lifting contact head 28 slowly slides in the switch housing 26, contact 1 27 and contact 2 30 will remain in contact, and when the lifting contact head 28 quickly leaves contact 1 27, contact 2 30 will temporarily follow the lifting contact head 28 to leave contact 1 27, and then slowly reset and contact contact 1 27 again.

[0053] The flywheel type arc sensing mechanism 4 includes a cross flywheel body 34, a flexible limiting magnet 35, a center locking assembly 36 and an adaptive locking roller assembly 37. The flexible limiting magnet 35 is arranged on the cross flywheel body 34 and the rolling support assembly 6, the center locking assembly 36 is arranged at the center position of the cross flywheel body 34, and the adaptive locking roller assembly 37 is evenly distributed in a ring at the end of the cross flywheel body 34.

[0054] One of the flexible limiting magnets 35 is fixed to the bottom of the T-shaped bracket 10, and the other flexible limiting magnets 35 are fixed to the cross flywheel body 34. When the flexible limiting magnets 35 are close to each other, there will be a magnetic repulsion force. Under the action of the flexible limiting magnet 35, when the second hollow protrusion 42 is combined with the first slot 23 and the first hollow protrusion 38 is separated from the second slot 24, the cross flywheel body 34 can only rotate freely within a certain range and cannot rotate completely freely in a circle, thereby avoiding the problem of jamming caused by excessive deviation of the rotation angle of the cross flywheel body 34.

[0055] The center locking assembly 36 includes a first hollow protrusion 38, a first return spring 39, a hollow lock pin 40 and a hydraulic conduit 41. The first hollow protrusion 38 is fixedly connected to the center position of the cross flywheel body 34. The first hollow protrusion 38 is detachably engaged in the second slot 24. The hollow lock pin 40 is slidably engaged in the first hollow protrusion 38. The first return spring 39 is arranged between the first hollow protrusion 38 and the hollow lock pin 40. An armature part 47 is arranged on the top of the hollow lock pin 40. The adsorption electromagnet 25 can generate an attraction to the armature part 47 when energized. One end of the hydraulic conduit 41 is arranged in the first hollow protrusion 38.

[0056] The locking and separation between the center locking assembly 36 and the second slot 24 can be controlled by the telescopic sliding of the hollow locking pin 40. When the center locking assembly 36 is locked in the second slot 24, the T-shaped bracket 10 will make a circular motion with the center of the cross flywheel body 34 as the center, thereby limiting and guiding the T-shaped bracket 10 when grinding the arc-shaped curved surface of the curved casting body 1.

[0057] The adaptive locking roller assembly 37 includes a second hollow convex head 42, a third return spring 43, a locking plate 44, a lifting roller 45 and an external roller 46. The second hollow convex head 42 is fixedly connected to the end of the cross flywheel body 34, and the second hollow convex head 42 is detachably engaged in the first slot 23. The locking plate 44 is fixedly connected to the bottom of the second hollow convex head 42. The lifting roller 45 is lifted and lowered in the second hollow convex head 42. The third return spring 43 is arranged between the second hollow convex head 42 and the lifting roller 45. The external roller 46 is fixedly connected to the lifting roller 45. The external roller 46 is in rolling contact with the curved casting body 1.

[0058] Through the hydraulic linkage of the hydraulic conduit 41, all external rollers 46 can be automatically locked when the center locking assembly 36 is in a locked state, and there is friction between the external rollers 46 and the curved casting body 1. Therefore, when the external rollers 46 are locked, the position of the cross flywheel body 34 and the position of its own center point can be kept fixed, thereby ensuring that the center of the T-shaped bracket 10 is fixed during circular motion until it is processed to the straight area again.

[0059] When in use, the user first needs to place the curved casting body 1 vertically. The curved casting body 1 is composed of a plurality of straight line parts and arc parts, wherein the arc part is a 90-degree fillet. When the device is used to process a straight portion, at least three moving rollers 12 are in rolling contact with the curved casting body 1 at the same time, two of which are symmetrically arranged relative to the middle curved casting body 1. Since the arc portion of the curved casting body 1 is convex outward, the third and fourth moving rollers 12 are also located on the outside of the curved casting body 1 and at the rear in the direction of travel.

[0060] Since the movable roller 12 limits the position of the curved casting body 1, when the device is used to process the straight part, the T-shaped bracket 10 always remains perpendicular to the curved casting body 1. Therefore, in this process, by pushing the T-shaped bracket 10 by hand or using external equipment to push the T-shaped bracket 10, the ridges of the inner and outer edges of the curved casting body 1 can be polished during the high-speed rotation of the grinding wheel 50.

[0061] During this process, the second hollow protrusion 42 is temporarily locked in the first slot 23, and the two are in a combined state, while the first hollow protrusion 38 and the second slot 24 are in a non-combined state, and at this time, the hollow lock pin 40 is in a retracted state under the tension of the first reset tension spring 39, so the lifting roller 45 is also in an extended state, and the external roller 46 can rotate freely; when the adjustable rolling support mechanism 2 rolls along the curved casting body 1, the external roller 46 of the adaptive locking roller assembly 37 engaged in the first slot 23 also rolls in contact with the curved casting body 1, and the cross flywheel body 34 will swing within a certain range under the magnetic repulsive force of the flexible limiting magnet 35. At this time, the swing limit angle of the cross flywheel body 34 on one side is when the external roller 46 at the front end contacts the inner wall of the curved casting body 1, and the swing limit angle on the other side is when the flexible limiting magnet 35 on the T-shaped bracket 10 is close to the flexible limiting magnet 35 on the cross flywheel body 34; As the adjustable rolling support mechanism 2 approaches the arc-shaped portion of the curved casting body 1, the swing range of the cross flywheel body 34 becomes smaller and smaller under the limit of the inner wall of the arc-shaped portion of the curved casting body 1. When the moving roller 12 located on the inner side is about to enter the arc-shaped portion from the straight portion of the curved casting body 1, the front end outer roller 46 has also been pressed against the arc-shaped inner wall of the curved casting body 1. At this time, the two outer rollers 46 are in contact with the inner wall of the curved casting body 1 at the same time. As the advancement continues, since the spacing of the external rollers 46 matches the diameter of the arc-shaped portion of the curved casting body 1, when the moving roller 12 reaches the position where the straight portion of the curved casting body 1 is tangent to the arc-shaped portion, the two rolling support assemblies 6 are respectively located at the two end points of the arc-shaped portion, and at this time, the first hollow protrusion 38 slides into the second clamping groove 24, and the two are transformed into a combined state; When the first hollow protrusion 38 enters the second slot 24, since the adsorption electromagnet 25 is energized at this time, the hollow lock pin 40 will slide out and enter the countersunk circular hole 20 under the action of the magnetic attraction between the adsorption electromagnet 25 and the armature part 47, completing the temporary locking of the central locking component 36 and the second slot 24; When the hollow lock pin 40 is extended, the liquid in each second hollow protrusion 42 will enter the first hollow protrusion 38 through the hydraulic conduit 41, so that the lifting roller 45 overcomes the elastic force of the third return spring 43 and retracts into the second hollow protrusion 42. When the lifting roller 45 retracts, its side surface will contact and squeeze the locking piece 44, so that all the external rollers 46 are locked (unable to rotate); At this time, the position of the cross flywheel body 34 is fixed according to the arc portion of the curved casting body 1, and then the adjustable rolling support mechanism 2 is continuously pushed, and the second hollow protrusion 42 located in the first slot 23 is separated from the first slot 23. At this time, the T-shaped bracket 10 performs an arc motion with the center position of the cross flywheel body 34 as the center of the circle, so that the ridgeline of the curved surface of the curved casting body 1 can be polished; As the T-shaped bracket 10 rotates, when the next second hollow protrusion 42 contacts the lifting contact head 28, the lifting contact head 28 will be pressed toward the inside of the switch housing 26 through the slope portion 32. When the second hollow protrusion 42 is inserted into the first slot 23, the lifting contact head 28 without the support will rebound quickly under the elastic force of the first return spring 29. At this time, due to the sliding resistance between the second contact 30 and the sleeve portion 33, the second contact 30 will first rebound together with the lifting contact head 28, and then reset under the elastic force of the second return spring 31. When contact 2 30 and contact 1 27 are separated, the adsorption electromagnet 25 is powered off, and the armature part 47 which loses the magnetic attraction will rebound under the elastic force of the first reset spring 39. On the one hand, part of the liquid in the first hollow protrusion 38 flows back into the second hollow protrusion 42 and contacts the rotation lock of the external roller 46. On the other hand, the first hollow protrusion 38 will also be disengaged from the second slot 24. Then the cross flywheel body 34 swings forward under the magnetic repulsive force of the flexible limit magnet 35, thereby grinding the next straight section of the curved casting body 1.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An edge grinding device for a curved casting, characterized in that: The invention comprises a curved surface casting body (1), an adjustable rolling support mechanism (2), a two-point alternating automatic circular arc mechanism (3), a flywheel type circular arc sensing mechanism (4) and a grinding chamfering assembly (5), wherein the adjustable rolling support mechanism (2) is rollingly arranged on the curved surface casting body (1), the two-point alternating automatic circular arc mechanism (3) is arranged on the adjustable rolling support mechanism (2), the flywheel type circular arc sensing mechanism (4) is detachably arranged on the two-point alternating automatic circular arc mechanism (3), and the grinding chamfering assembly (5) is arranged on the adjustable rolling support mechanism (2); The double-point alternating automatic arc mechanism (3) comprises a temporary locking component (21) and a trigger switch component (22), wherein the temporary locking component (21) is arranged on the curved surface casting body (1), and the trigger switch component (22) is fixedly connected to the curved surface casting body (1); The flywheel type circular arc sensing mechanism (4) comprises a cross flywheel body (34), a flexible limiting magnet (35), a central locking assembly (36) and an adaptive locking roller assembly (37), wherein the flexible limiting magnet (35) is arranged on the cross flywheel body (34) and the curved casting body (1), the central locking assembly (36) is arranged at the center of the cross flywheel body (34), and the adaptive locking roller assembly (37) is evenly distributed in an annular shape at the end of the cross flywheel body (34).

2. The edge grinding device for a curved casting according to claim 1, characterized in that: The adjustable rolling support mechanism (2) comprises a rolling support component (6), an adjusting clamping component (7) and a top support component (8); the rolling support component (6) and the curved casting body (1) are in rolling contact; the adjusting clamping component (7) is arranged on the rolling support component (6); and the top support component (8) is arranged on the rolling support component (6).

3. The edge grinding device for a curved casting according to claim 2, characterized in that: The rolling support assembly (6) comprises a grooved crossbeam (9), a T-shaped bracket (10), a fixed fork frame (11) and a movable roller (12); the grooved crossbeam (9) and the T-shaped bracket (10) are fixedly connected; a sliding adjustment groove (18) is provided on the grooved crossbeam (9); the grinding chamfering assembly (5) is slidingly adjusted in the sliding adjustment groove (18); two ends of the T-shaped bracket (10) are respectively provided with a circular through hole (19) and a countersunk circular hole (20); the fixed fork frame (11) is fixedly connected to the T-shaped bracket (10); and one of the movable rollers (12) is rotatably provided in the fixed fork frame (11).

4. The edge grinding device for a curved casting according to claim 3, characterized in that: The temporary locking assembly (21) comprises a first card slot (23), a second card slot (24) and an adsorption type electromagnet (25); the first card slot (23) and the second card slot (24) are fixedly connected to the bottom of the T-shaped bracket (10); the first card slot (23) is located at an end where the circular through hole (19) is located; the second card slot (24) is located at an end where the countersunk circular hole (20) is located; and the adsorption type electromagnet (25) is engaged in the second card slot (24).

5. The edge grinding device for a curved casting according to claim 4, characterized in that: The trigger switch assembly (22) comprises a switch housing (26), a contact point 1 (27), a lifting contact head (28), a first return spring (29), a contact point 2 (30) and a second return spring (31); the switch housing (26) is fixedly connected to the circular through hole (19); the contact point 1 (27) is fixedly connected to the inner top of the switch housing (26); the lifting contact head (28) is slidably arranged in the switch housing (26); the first return spring (29) is arranged between the contact point 1 (27) and the lifting contact head (28); the first return spring (29) has a sleeve portion (33) and a slope portion (32) at its upper and lower ends respectively; the contact point 2 (30) is slidably arranged in the sleeve portion (33); the second return spring (31) is arranged between the contact point 2 (30) and the lifting contact head (28); and there is a sliding resistance between the contact point 2 (30) and the sleeve portion (33).

6. The edge grinding device for a curved casting according to claim 5, characterized in that: One of the flexible limiting magnets (35) is fixed to the bottom of the T-shaped bracket (10), and the other flexible limiting magnets (35) are fixed to the cross flywheel body (34), and when two of the flexible limiting magnets (35) are close to each other, a magnetic repulsive force will be generated; The center locking assembly (36) comprises a first hollow protrusion (38), a first return tension spring (39), a hollow lock pin (40) and a hydraulic conduit (41); the first hollow protrusion (38) is fixedly connected to the center position of the cross flywheel body (34); the first hollow protrusion (38) is detachably engaged in the second engagement groove (24); the hollow lock pin (40) is slidably engaged in the first hollow protrusion (38); the first return tension spring (39) is arranged between the first hollow protrusion (38) and the hollow lock pin (40); an armature part (47) is arranged at the top of the hollow lock pin (40); the adsorption type electromagnet (25) can generate an attractive force on the armature part (47) when energized; and one end of the hydraulic conduit (41) is arranged in the first hollow protrusion (38).

7. The edge grinding device for a curved casting according to claim 6, characterized in that: The adaptive locking roller assembly (37) comprises a second hollow convex head (42), a third return spring (43), a locking plate (44), a lifting roller (45) and an external roller (46); the second hollow convex head (42) is fixedly connected to the end of the cross flywheel body (34); the second hollow convex head (42) is detachably engaged in the first slot (23); the locking plate (44) is fixedly connected to the bottom of the second hollow convex head (42); the lifting roller (45) is lifted and arranged in the second hollow convex head (42); the third return spring (43) is arranged between the second hollow convex head (42) and the lifting roller (45); the external roller (46) is fixedly connected to the lifting roller (45); and the external roller (46) is in rolling contact with the curved casting body (1).

8. The edge grinding device for a curved casting according to claim 7, characterized in that: The adjusting clamping assembly (7) comprises an adjusting base plate (13), a movable fork frame (14) and an adjusting stud (15); the adjusting base plate (13) is fixedly connected to the grooved crossbeam (9); the adjusting stud (15) and the adjusting base plate (13) are threadedly connected; the adjusting stud (15) is rotatably arranged in the movable fork frame (14); three of the movable rollers (12) are rotatably arranged in the movable fork frame (14); and the distance between the movable fork frame (14) and the curved casting body (1) can be adjusted by rotating the adjusting stud (15).

9. The edge grinding device for a curved casting according to claim 8, characterized in that: The top support assembly (8) comprises a top fork frame (16) and a top roller (17); the top fork frame (16) is fixedly connected to the bottom of the grooved cross beam (9); the top roller (17) is rotatably arranged in the top fork frame (16); the top fork frame (16) is in rolling contact with the top surface of the curved casting body (1).

10. The edge grinding device for a curved casting according to claim 9, characterized in that: The grinding chamfering assembly (5) comprises a grinding adjustment plate (48), a grinding motor (49) and a grinding wheel (50); the grinding adjustment plate (48) is slidably engaged in the sliding adjustment groove (18); the grinding motor (49) is fixedly connected to the grinding adjustment plate (48); the grinding wheel (50) is arranged on the output shaft of the grinding motor (49); and the grinding adjustment plate (48) can be slidably adjusted and locked in the sliding adjustment groove (18).

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