Grinding machine

Abstract

The utility model discloses a grinding machine, and relates to the technical field of grinding machines. The grinding machine comprises a rack, a carrier clamping mechanism, an abrasive belt, an abrasive belt tensioning and conveying mechanism and a swing mechanism, the carrier clamping mechanism comprises a carrier seat and a clamping assembly, and the clamping assembly is arranged in the carrier seat and used for clamping and positioning a product to be machined and enabling the arc-shaped end face of the product to be machined to stretch out of the carrier seat. The carrier clamping mechanism is arranged on the rack, the abrasive belt tensioning and conveying mechanism is arranged on the rack, the abrasive belt tensioning and conveying mechanism is arranged on one side of the carrier clamping mechanism, and the abrasive belt is connected to the abrasive belt conveying mechanism and can abut against the arc-shaped end face of the product to be machined. And the swinging mechanism is arranged on the rack, is connected with the carrier clamping mechanism and is used for driving the carrier clamping mechanism to swing along a set arc-shaped track, so that each position of the arc-shaped surface of the arc-shaped end surface of the to-be-machined product can be propped against the abrasive belt for grinding. According to the grinding machine, fine grinding of the arc-shaped end face is achieved, the grinding efficiency is improved, and meanwhile the product quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a grinding machine technical field especially relates to a grinding machine. BACKGROUND

[0002] When ceramic substrate is used as the substrate material of electronic components and circuit board, some special models need to be processed into arc-shaped end face on the end face of ceramic substrate, and the machined arc-shaped end face will inevitably have the phenomenon of ups and downs, and the electronic components and circuit board have strict requirements on the flatness and roughness of the surface, so fine grinding is needed for the arc-shaped end face.

[0003] The existing grinding method mainly grinds the arc-shaped end face through a profiled grinding wheel, and the grinding wheel grinding will generate a large amount of heat, which needs to be cooled by coolant, and belongs to wet grinding; at the same time, the grinding wheel grinding needs to grind the grinding wheel for many times, and the grinding efficiency is low; moreover, the flatness after grinding is poor, the surface roughness is high, and the fine grinding of the arc-shaped end face of the ceramic substrate cannot be met; in addition, wet grinding will damage the packaging and circuit of electronic components and circuit board, and affect the quality of the product. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a grinding machine, which can not only improve the grinding efficiency, but also realize fine grinding of the arc-shaped end face and ensure the quality of the product.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The grinding machine comprises:

[0007] A rack;

[0008] A carrier clamping mechanism, which comprises a carrier seat and a clamping assembly, the clamping assembly is arranged in the carrier seat, used for clamping and positioning the product to be processed, and the arc-shaped end face of the product to be processed extends out of the carrier seat;

[0009] A sand belt and a sand belt tensioning and conveying mechanism, the sand belt tensioning and conveying mechanism is arranged on the rack, the sand belt tensioning and conveying mechanism is arranged on one side of the carrier clamping mechanism, the sand belt is connected to the sand belt tensioning and conveying mechanism, and can abut against the arc-shaped end face;

[0010] A swing mechanism, which is arranged on the rack, the swing mechanism is connected with the carrier clamping mechanism, used for driving the carrier clamping mechanism to swing in a set arc-shaped track, so that each position of the arc-shaped end face can abut against and grind the sand belt.

[0011] As an optional solution of the grinding machine, the swing mechanism comprises a swing support frame, a first driving member, a first connecting disc and a first connecting rod, the swing support frame is arranged on the frame, the first driving member is arranged on the swing support frame, the first driving member is connected with the first connecting disc to drive the first connecting disc to rotate, one end of the first connecting rod is eccentrically connected with the first connecting disc, and the other end is connected with the carrier clamping mechanism, and the first connecting disc can drive the carrier clamping mechanism to swing along the set arc-shaped track through the first connecting rod.

[0012] As an optional solution of the grinding machine, the first connecting rod is arranged as an L-shaped connecting rod, the end of the short arm of the L-shaped connecting rod is connected with the carrier clamping mechanism, the end of the long arm is connected with the first connecting disc, and when the carrier clamping mechanism is located at the lowest position of the set arc-shaped track, the end of the long arm of the L-shaped connecting rod is located at one end of the first connecting disc close to the belt tensioning and conveying mechanism.

[0013] As an optional solution of the grinding machine, the swing mechanism further comprises a swing limiting assembly, the swing limiting assembly comprises a limiting arc-shaped plate, swing limit position sensors and a swing sensing member, the limiting arc-shaped plate is provided with the set arc-shaped track, the swing limit position sensors are arranged at two ends of the set arc-shaped track respectively, the swing sensing member is arranged outside the carrier clamping mechanism, and the swing limit position sensors can send feedback signals after sensing the swing sensing member.

[0014] As an optional solution of the grinding machine, the grinding machine further comprises a translation mechanism, the translation mechanism is connected with the swing support frame to drive the carrier clamping mechanism to move along the length extension direction of the product to be processed through the swing support frame.

[0015] As an optional solution of the grinding machine, the translation mechanism comprises a translation support frame, a second driving member, a second connecting disc and a second connecting rod, the translation support frame is slidably arranged on the frame and located between the swing support frame and the belt tensioning and conveying mechanism, and the swing support frame is connected with the translation support frame; the second driving member is arranged on the frame, the second driving member is connected with the second connecting disc to drive the second connecting disc to rotate; one end of the second connecting rod is eccentrically connected with the second connecting disc, and the other end is connected with the translation support frame.

[0016] As an optional solution of the grinding machine, the translation mechanism further comprises a translation limiting assembly, the translation limiting assembly comprises a translation sensing piece and two translation limit position sensors, the two translation limit position sensors are arranged on the rack in parallel to the length direction of the product to be processed, the translation sensing piece is arranged on the translation support frame, and the translation limit position sensors send feedback signals after sensing the translation sensing piece.

[0017] As an optional solution of the grinding machine, the grinding machine further comprises a pressure adjusting mechanism, the pressure adjusting mechanism is arranged between the swing support frame and the translation support frame, and is used for adjusting the pressure of the arc-shaped end face acting on the abrasive belt.

[0018] As an optional solution of the grinding machine, the pressure adjusting mechanism comprises an adjusting screw, an adjusting nut, an adjusting spring and a pressure sensor, the pressure sensor is arranged on the side of the swing support frame away from the translation support frame, the adjusting screw is connected with the translation support frame after penetrating through the pressure sensor and the swing support frame in sequence, the adjusting nut is arranged on the end of the adjusting screw away from the translation support frame, and the adjusting spring is arranged between the adjusting nut and the pressure sensor.

[0019] As an optional solution of the grinding machine, the grinding machine further comprises a grinding support mechanism, the grinding support mechanism comprises a grinding support frame and a support flat plate, two ends of the grinding support frame are connected with the rack respectively, the support flat plate is arranged in the grinding support frame and is arranged opposite to the carrier clamping mechanism, the support flat plate is located on the side of the abrasive belt away from the carrier clamping mechanism, and is used for supporting the abrasive belt.

[0020] As an optional solution of the grinding machine, the abrasive belt tensioning and conveying mechanism comprises a unwinding assembly, a winding assembly and a guide assembly, the abrasive belt roll is arranged on the unwinding assembly, the guide assembly comprises two guide shafts, one of the guide shafts is arranged close to the unwinding assembly, the other guide shaft is arranged close to the winding assembly, the grinding support mechanism is arranged between the two guide shafts, and the winding assembly is used for collecting the used abrasive belt.

[0021] As an optional solution of the grinding machine, an encoder is arranged on the winding assembly, and the encoder is used for detecting whether the abrasive belt is broken.

[0022] As an optional solution of the grinding machine, the clamping assembly comprises a clamping bottom plate and a clamping cover plate, one side of the clamping bottom plate is provided with a clamping groove, one end of the product to be processed away from the arc-shaped end face is arranged in the clamping groove, and the clamping cover plate clamps and fixes the product to be processed together with the clamping bottom plate.

[0023] As an optional solution of the grinding machine, the clamping cover plate is detachably connected with the clamping bottom plate, and the clamping cover plate and the clamping bottom plate are locked by a locking assembly, the locking assembly comprises a cam sleeve and a locker, the cam sleeve is arranged on the clamping bottom plate, and the locker is arranged on the clamping cover plate, the locker is matched with the cam sleeve, and the clamping cover plate and the clamping bottom plate can be locked.

[0024] As an optional solution of the grinding machine, the carrier clamping mechanism further comprises a fine adjustment assembly and a bearing plate, the bearing plate is movably arranged on the carrier seat and used for bearing the clamping assembly, the fine adjustment assembly is arranged on the side of the carrier seat away from the abrasive belt tensioning and conveying mechanism, and the fine adjustment assembly comprises a micro head, and a measuring rod of the micro head is in abutment with the bearing plate.

[0025] As an optional solution of the grinding machine, the two side walls of the carrier seat are oppositely provided with sliding grooves, and the two ends of the bearing plate are slidably arranged in the sliding grooves through sliding columns; the carrier clamping mechanism further comprises a stretching assembly, the stretching assembly comprises a fixing column and a stretching spring, the fixing column is arranged on the side wall of the carrier seat and away from the sliding grooves, one end of the stretching spring is connected with the fixing column, and the other end of the stretching spring is connected with the sliding column.

[0026] The grinding machine has the advantages that:

[0027] The grinding machine has the advantages that: the swing mechanism and the abrasive belt tensioning and conveying mechanism are oppositely arranged on the rack, the carrier clamping mechanism is connected with the swing mechanism, the clamping assembly in the carrier seat of the carrier clamping mechanism clamps the product to be machined, and the arc-shaped end face of the product to be machined is stretched out of the carrier seat, so that the arc-shaped end face can be in abutment with the abrasive belt on the abrasive belt tensioning and conveying mechanism, and the arc-shaped end face is ground by the abrasive belt. The abrasive belt tensioning and conveying mechanism conveys and tensions the abrasive belt and collects the used abrasive belt, so that the step of replacing the abrasive belt is reduced, and the grinding efficiency is improved; meanwhile, the abutment pressure between the arc-shaped end face and the abrasive belt is ensured, and the grinding effect is ensured. The carrier clamping mechanism is arranged on the swing mechanism, the swing mechanism drives the carrier clamping mechanism to swing along the set arc-shaped track, so that each position of the arc-shaped end face can be in abutment with the abrasive belt, thereby fine grinding of each position of the arc-shaped end face is realized, and the flatness and surface roughness of the arc-shaped end face are ensured. In addition, the grinding machine does not generate a large amount of heat during grinding, and does not need cooling liquid for cooling, so that the packaging and circuit of electronic components and circuit boards are not damaged, and the quality of the product is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a first structural schematic view of the grinding machine provided in the specific embodiment of the utility model;

[0029] Figure 2 is a second structural schematic view of the grinding machine provided by the embodiment of the utility model;

[0030] Figure 3 is a first structural schematic view of the carrier clamping mechanism provided by the embodiment of the utility model;

[0031] Figure 4 is an exploded schematic view of the clamping assembly, the locking assembly and the bearing plate provided by the embodiment of the utility model;

[0032] Figure 5 is a second structural schematic view of the carrier clamping mechanism provided by the embodiment of the utility model;

[0033] Figure 6 is a connection schematic view of the abrasive belt tensioning and conveying mechanism and the grinding support mechanism provided by the embodiment of the utility model;

[0034] Figure 7 is a structural schematic view of the grinding support mechanism provided by the embodiment of the utility model;

[0035] Figure 8 is an assembly schematic view of the swing mechanism and the carrier clamping mechanism provided by the embodiment of the utility model;

[0036] Figure 9 is a structural schematic view of the translation mechanism provided by the embodiment of the utility model;

[0037] Figure 10 is an assembly schematic view of the pressure regulating mechanism provided by the embodiment of the utility model.

[0038] In the drawings:

[0039] 100, arc-shaped end face;

[0040] 1, rack; 11, bottom plate; 12, first mounting plate; 121, linear guide rail; 13, second mounting plate; 14, third mounting plate; 15, mounting side plate;

[0041] 2, carrier clamping mechanism; 21, carrier seat; 211, sliding groove; 212, hinged shaft; 22, clamping assembly; 221, clamping bottom plate; 2211, clamping groove; 222, clamping cover plate; 223, locking assembly; 2231, cam sleeve; 2232, locker; 23, fine adjustment assembly; 231, differential head; 232, differential head mounting plate; 24, bearing plate; 241, sliding column; 25, stretching assembly; 251, fixed column; 252, stretching spring;

[0042] 3, abrasive belt;

[0043] 4, sand belt tension transmission mechanism; 41, unwinding assembly; 411, unwinding deceleration motor; 412, unwinding drum; 42, winding assembly; 421, winding motor; 422, winding drum; 423, first gear; 424, second gear; 425, encoder; 43, guide shaft;

[0044] 5, swing mechanism; 51, swing support frame; 52, first driving member; 53, first connecting disc; 54, first connecting rod; 55, swing limiting assembly; 551, limiting arc plate; 552, swing limit position sensor; 553, swing sensing member; 56, connecting assembly; 561, connecting block; 562, connecting column;

[0045] 6, translation mechanism; 61, translation support frame; 611, sliding block; 62, second driving member; 63, second connecting disc; 64, second connecting rod; 65, translation limiting assembly; 651, translation limit position sensor; 652, translation sensing member;

[0046] 7, pressure adjusting mechanism; 71, adjusting screw; 72, adjusting nut; 73, adjusting spring; 74, pressure sensor;

[0047] 8, grinding support mechanism; 81, grinding support frame; 82, support flat plate. DETAILED DESCRIPTION

[0048] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments.

[0049] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0050] The embodiment provides a grinding machine for fine grinding of an arc-shaped end face, which can not only improve the grinding efficiency of the arc-shaped end face, but also can guarantee the flatness and surface roughness of the arc-shaped end face; meanwhile, a large amount of heat is not generated in the grinding process, and cooling liquid is not needed for cooling, so that the packaging and circuit of electronic components and circuit boards are not damaged, and the quality of products is guaranteed. The grinding machine is not only suitable for grinding of the arc-shaped end face of a ceramic substrate, but also suitable for grinding of the arc-shaped end face of other plate materials.

[0051] As Figure 1and Figure 2 As shown, the grinding machine includes a frame 1, a carrier clamping mechanism 2, an abrasive belt 3, an abrasive belt tensioning and conveying mechanism 4, and a swing mechanism 5. The abrasive belt tensioning and conveying mechanism 4 and the swing mechanism 5 are both arranged on the frame 1. The carrier clamping mechanism 2 includes a carrier seat 21 and a clamping assembly 22. The clamping assembly 22 is arranged in the carrier seat 21 and is used to clamp and position the product to be processed and allow the curved end surface 100 of the product to be processed to extend out of the carrier seat 21. The abrasive belt tensioning and conveying mechanism 4 is arranged on one side of the carrier clamping mechanism 2. The abrasive belt 3 is connected to the abrasive belt tensioning and conveying mechanism 4 and can abut against the curved end surface 100. The swing mechanism 5 is connected to the carrier clamping mechanism 2 and is used to drive the carrier clamping mechanism 2 to swing along a set arc trajectory so that all positions of the arc surface of the curved end surface 100 can abut against the abrasive belt 3 for grinding. The grinding machine provided in this embodiment grinds the curved end face 100 of the product to be processed with the sanding belt 3, thereby reducing heat generation, eliminating the need for cooling liquid, and preventing damage to the packaging and circuitry of electronic components and circuit boards, thereby ensuring product quality. Furthermore, the sanding belt 3 is automatically conveyed and tensioned by the sanding belt tensioning and conveying mechanism 4, and the used sanding belt 3 is automatically collected, eliminating the need for manual replacement of the sanding belt 3, thereby improving grinding efficiency. At the same time, the contact force required for the sanding belt 3 to grind the curved end face 100 is ensured, thereby improving grinding efficiency. The swing mechanism 5 drives the carrier clamping mechanism 2 to swing along a set arc trajectory, thereby driving the curved end face 100 to swing along a set arc trajectory, so that each position of the arc surface of the curved end face 100 can abut against the sanding belt 3, thereby achieving fine grinding of each position of the curved end face 100 and ensuring that the flatness and surface roughness of the ground curved end face 100 meet the requirements.

[0052] The abrasive belt 3 is a coated abrasive, also known as a flexible abrasive. Compared to a solid abrasive wheel, it is more flexible and safer when polishing, has higher precision, lower grinding costs, and generates less heat.

[0053] The frame 1 includes a base plate 11, a first mounting plate 12 and a second mounting plate 13. The first mounting plate 12 and the second mounting plate 13 are both vertically arranged on the base plate 11. The first mounting plate 12 is vertically connected to one end of the second mounting plate 13. The swing mechanism 5 and the carrier clamping mechanism 2 are installed on the first mounting plate 12. The belt tensioning and conveying mechanism 4 is installed on the second mounting plate 13, and the axis of the belt tensioning and conveying mechanism 4 is perpendicular to the second mounting plate 13, so that the belt tensioning and conveying mechanism 4 and the carrier clamping mechanism 2 are arranged opposite to each other.

[0054] like Figures 3-5 As shown, the carrier seat 21 includes a base and two end plates, which are respectively provided at both ends of the base along the length direction, so that the opposite sides of the carrier seat 21 are open. The end plates are fixedly connected to the ends of the base by fastening screws or the like.

[0055] The clamping assembly 22 comprises a clamping bottom plate 221 and a clamping cover plate 222. The clamping bottom plate 221 is provided with a clamping groove 2211 on one side, and the end of the product to be machined away from the arc-shaped end face 100 is arranged in the clamping groove 2211. The clamping cover plate 222 clamps and fixes the product to be machined together with the clamping bottom plate 221. The product to be machined is fixed by the clamping force of the clamping cover plate 222 and the clamping bottom plate 221.

[0056] The carrier seat 21 and the clamping assembly 22 can be set according to the maximum length of the product to be machined. In this embodiment, the maximum length of the product to be machined that can be clamped by the clamping groove 2211 on the clamping bottom plate 221 is 150 mm. When machining products of different lengths, the clamping bottom plate 221 with a clamping groove 2211 whose length is adapted to the length of the product to be machined can be replaced.

[0057] The clamping bottom plate 221 is fixed to the carrier seat 21 by means of fastening screws or the like. The clamping cover plate 222 is detachably connected to the clamping bottom plate 221. When installing the product to be machined, only the end of the product to be machined away from the arc-shaped end face 100 needs to be placed in the clamping groove 2211. The groove bottom and the two groove walls of the clamping groove 2211 are used to limit the three degrees of freedom of the product to be machined. The base limits one degree of freedom. The clamping cover plate 222 and the clamping bottom plate 221 are connected to clamp the product to be machined, which can fix the product to be machined and realize the abutment grinding of the arc-shaped end face 100 of the product to be machined and the abrasive belt 3. When disassembling, the clamping cover plate 222 is disassembled, and the arc-shaped end face 100 of the product to be machined is pulled outward by hand, so that the product to be machined can be disassembled. The operation is simple, and the disassembly efficiency is improved.

[0058] Of course, in other embodiments, the clamping cover plate 222 and the clamping bottom plate 221 can also be provided with a structure of one end rotating connection and the other end clamping.

[0059] In an embodiment, the clamping cover plate 222 and the clamping bottom plate 221 are locked by a locking assembly 223. The locking assembly 223 comprises a cam sleeve 2231 and a locker 2232. The cam sleeve 2231 is arranged on the clamping bottom plate 221, and the locker 2232 is arranged on the clamping cover plate 222. The locker 2232 cooperates with the cam sleeve 2231 to lock the clamping cover plate 222 and the clamping bottom plate 221, preventing the product to be machined from moving and affecting the grinding accuracy. Two cam sleeves 2231 are arranged at intervals along the length direction of the clamping bottom plate 221. Correspondingly, two lockers 2232 are arranged on the clamping cover plate 222. The locker 2232 cooperates with the cam sleeve 2231 to lock the clamping cover plate 222 and the clamping bottom plate 221. It should be noted that the cam sleeve 2231 and the locker 2232 are off-the-shelf products, and the specific structure and working principle are not described here.

[0060] Of course, in other embodiments, the locking assembly 223 can also be a locking hole and a locking column or the like.

[0061] Since the position of the belt tensioning transmission mechanism 4 on the frame 1 is fixed, in order to avoid that the arc-shaped end surface 100 of the product to be machined clamped by the clamping assembly 22 cannot abut against or abuts against the belt 3 with too large force due to machining errors or assembly errors, resulting in that the grinding of the arc-shaped end surface 100 cannot be achieved or is excessive. The grinding machine provided by the embodiment ensures that the arc-shaped end surface 100 of the product to be machined abuts against the belt 3 by fine-tuning the position of the clamping assembly 22 in the carrier seat 21.

[0062] Specifically, the carrier clamping mechanism 2 further comprises a fine-tuning assembly 23 and a bearing plate 24, the bearing plate 24 is movably arranged on the carrier seat 21 and is used for bearing the clamping assembly 22. The position of the product to be machined is adjusted by adjusting the position of the bearing plate 24 in the carrier seat 21. The fine-tuning assembly 23 is arranged on the side of the carrier seat 21 away from the belt tensioning transmission mechanism 4, and the fine-tuning assembly 23 comprises a micro head 231, the measuring rod of the micro head 231 abuts against the bearing plate 24. The micro head 231 is fixed to the carrier seat 21 through a micro head mounting plate 232, in order to ensure the consistency of the grinding of the arc-shaped end surface 100 along the length direction, the micro head 231 is provided with two, the two micro heads 231 pass through the micro head mounting plate 232, and the measuring rods abut against the side of the bearing plate 24 away from the belt tensioning transmission mechanism 4. When adjusting the position of the product to be machined, the two micro heads 231 are simultaneously screwed, so that the bearing plate 24 moves towards or away from one end of the belt tensioning transmission mechanism 4, thereby adjusting the abutting force of the arc-shaped end surface 100 and the belt 3. The specific structure and working principle of the micro head 231 are existing technologies, and will not be described here.

[0063] The two side walls of the carrier seat 21 are oppositely provided with sliding grooves 211, and the two ends of the bearing plate 24 are slidably arranged in the sliding grooves 211 through sliding columns 241; the carrier clamping mechanism 2 further comprises a stretching assembly 25, the stretching assembly 25 comprises a fixed column 251 and a stretching spring 252, the fixed column 251 is arranged on the side wall of the carrier seat 21 away from the sliding groove 211, one end of the stretching spring 252 is connected with the fixed column 251, and the other end is connected with the sliding column 241. The moving amount of the bearing plate 24 is the stretching amount of the stretching spring 252, when the micro head 231 is screwed clockwise, the bearing plate 24 moves towards one end of the belt tensioning transmission mechanism 4, and the stretching spring 252 is stretched, so that the abutting force of the arc-shaped end surface 100 and the belt 3 can be increased. When the micro head 231 is screwed counterclockwise, under the action of the elastic recovery force of the stretching spring 252, the fixed column 251 drives the bearing plate 24 to move away from the belt tensioning transmission mechanism 4, so that the abutting force of the arc-shaped end surface 100 and the belt 3 can be reduced.

[0064] Specifically, the sliding grooves 211 are arranged on two end plates of the carrier seat 21 near one end of the belt tensioning and conveying mechanism 4, the fixed columns 251 are arranged on the end plates away from the sliding grooves 211, the sliding columns 241 are connected to the carrier plate 24 near one end of the belt tensioning and conveying mechanism 4, and both ends of the sliding columns 241 extend into the two sliding grooves 211.

[0065] As shown in Figure 6 and Figure 7 To ensure the abutting force between the belt 3 and the arc-shaped end surface 100, the grinder further comprises a grinding support mechanism 8, which comprises a grinding support frame 81 and a support flat plate 82. The two ends of the grinding support frame 81 are connected with the rack 1 respectively, the support flat plate 82 is arranged in the grinding support frame 81 and is arranged opposite to the carrier clamping mechanism 2, the support flat plate 82 is located on the side of the belt 3 away from the carrier clamping mechanism 2 and is used for supporting the belt 3. The grinding support frame 81 comprises a back plate and two pressing plates arranged on both sides of the back plate, and the support flat plate 82 is made of glass. The friction between the glass and the belt 3 is small, so that the glass will not wear the belt 3 in the process of supporting the belt 3. Moreover, the flatness of the glass is 1um-2um, which can ensure the grinding precision. The two pressing plates press the glass on the back plate. In the conveying process of the belt 3, the arc-shaped end surface 100 abuts against the belt 3, the glass is used for supporting the belt 3, so that the arc-shaped end surface 100 of the product to be processed can be in full contact with the belt 3, and the grinding is more sufficient and uniform.

[0066] Of course, in other embodiments, the support flat plate 82 is not limited to glass, but can also be other support flat plates 82 made of materials with small friction and high flatness.

[0067] One end of the grinding support frame 81 is fixed on the second mounting plate 13, and the other end is fixed on the mounting side plate 15 arranged perpendicularly to the end of the first mounting plate 12 away from the second mounting plate 13.

[0068] To ensure that when the swing mechanism 5 drives the carrier clamping mechanism 2 to swing along the set arc-shaped track, each position of the arc surface of the arc-shaped end surface 100 can be effectively supported when abutting against the belt 3, the support flat plate 82 needs to have a certain width. The specific width of the support flat plate 82 can be determined according to the length of the set arc-shaped track along which the swing mechanism 5 drives the carrier clamping mechanism 2 to swing.

[0069] The sand belt tension transmission mechanism 4 comprises a unwinding assembly 41, a winding assembly 42 and a guide assembly. The sand belt 3 is wound on the unwinding assembly 41. The guide assembly comprises two guide shafts 43. One of the guide shafts 43 is arranged close to the unwinding assembly 41, and the other guide shaft 43 is arranged close to the winding assembly 42. The grinding support mechanism 8 is arranged between the two guide shafts 43. The winding assembly 42 is used to collect the used sand belt 3. The unwinding assembly 41 releases the sand belt 3. The sand belt 3 is guided by the two guide shafts 43. The winding assembly 42 collects and fixes the used sand belt 3 to prevent the sand belt 3 from loosening, so that the tension of the sand belt 3 when passing through the support plate 82 is ensured, thereby ensuring the grinding effect.

[0070] Specifically, the unwinding assembly 41 comprises an unwinding deceleration motor 411 and an unwinding drum 412. The sand belt 3 is wound on the unwinding drum 412. The main shaft of the unwinding deceleration motor 411 is connected to the shaft of the unwinding drum 412 through a first coupling. The unwinding deceleration motor 411 runs at a uniform speed according to the set parameters, and is used to drive the unwinding drum 412 to rotate, thereby realizing uniform release of the sand belt 3. The winding assembly 42 comprises a winding motor 421 and a winding drum 422. The main shaft of the winding motor 421 is connected to the shaft of the winding drum 422 through a second coupling. The winding motor 421 is a torque motor. The torque motor can set the torque through a driver to tension the sand belt 3 released by the unwinding drum 412, thereby preventing the sand belt 3 from loosening due to stress during grinding.

[0071] The rack 1 further comprises a third mounting plate 14. The unwinding drum 412 and the winding drum 422 are both rotationally connected to the second mounting plate 13. The third mounting plate 14 is arranged on the side of the second mounting plate 13 away from the unwinding drum 412 and the winding drum 422, and is perpendicular to the second mounting plate 13. The unwinding deceleration motor 411 and the winding motor 421 are both fixed on the third mounting plate 14. The main shaft of the unwinding deceleration motor 411 passes through the second mounting plate 13 and is connected to the first coupling. The main shaft of the winding motor 421 passes through the second mounting plate 13 and is connected to the second coupling.

[0072] Further, in order to prevent the sand belt 3 from breaking and causing grinding failure, an encoder 425 is arranged on the winding assembly 42. The encoder 425 is used to detect whether the sand belt 3 is broken. Specifically, the winding assembly 42 further comprises a first gear 423 and a second gear 424. The first gear 423 is connected to the main shaft of the winding motor 421. A connecting bracket is arranged on the third mounting plate 14. The second gear 424 is rotationally connected to the connecting bracket. The encoder 425 is connected to the central shaft of the second gear 424. The first gear 423 and the second gear 424 are in meshing transmission, and the transmission ratio is 1:1. When the sand belt 3 is broken, the speed of the encoder 425 is too fast, which will trigger an alarm signal to remind the staff to handle it. The specific structure and working principle of the encoder 425 are prior art, and will not be described here.

[0073] As Figure 5and Figure 8 As shown, the swing mechanism 5 includes a swing support frame 51, a first drive member 52, a first connecting plate 53, and a first connecting rod 54. The swing support frame 51 is mounted on the frame 1. The first drive member 52 is mounted on the swing support frame 51. The first drive member 52 is connected to the first connecting plate 53 and is used to drive the first connecting plate 53 to rotate. One end of the first connecting rod 54 is eccentrically hinged to the first connecting plate 53, and the other end is hinged to the carrier clamping mechanism 2. The first connecting plate 53 can drive the carrier clamping mechanism 2 to swing along a set arc trajectory through the first connecting rod 54. The hinge axis 212 connecting the first connecting rod 54 and the carrier clamping mechanism 2 is located outside the end plate of the carrier base 21. The first drive member 52 drives the first connecting plate 53 to rotate. The first connecting plate 53 drives the carrier clamping mechanism 2 to swing within the hollow cavity of the swing support frame 51 through the first connecting rod 54. The first drive member 52 is a first reduction motor. By controlling the rotation direction of the main shaft of the first reduction motor, the carrier clamping mechanism 2 is controlled to swing along a set arc trajectory.

[0074] Specifically, the first connecting rod 54 is configured as an L-shaped connecting rod, with the end of the short arm of the L-shaped connecting rod hinged to the carrier clamping mechanism 2, and the end of the long arm hinged to the first connecting plate 53. When the carrier clamping mechanism 2 is at the lowest position of the set arc trajectory, the end of the long arm of the L-shaped connecting rod is located at the end of the first connecting plate 53 near the belt tensioning and conveying mechanism 4. This configuration reduces the pressure angle of the first connecting plate 53, reduces the torque requirement of the first reduction motor, and ensures smoother operation and is less prone to jamming. A hinge shaft 212 is provided on the end plate of the carrier seat 21 near one end of the L-shaped connecting rod, and the end of the short arm of the L-shaped connecting rod is hinged to the hinge shaft 212.

[0075] Specifically, the swing mechanism 5 also includes a swing limit assembly 55, which includes a limit arc plate 551, a swing limit position sensor 552 and a swing sensing component 553. The limit arc plate 551 is provided with a set arc trajectory. There are two swing limit position sensors 552, and the two swing limit position sensors 552 are respectively provided at the two ends of the set arc trajectory. The swing sensing component 553 is provided on the outside of the carrier clamping mechanism 2. The swing limit position sensor 552 can send a feedback signal after sensing the swing sensing component 553. The limiting arc plate 551 is fixed to the outside of the swing support frame 51. The two swing limit position sensors 552 on the limiting arc plate 551 are set toward the carrier seat 21. A swing sensing component 553 is set on the end plate of the carrier seat 21 close to the limiting arc plate 551. The swing limit position sensor 552 is a first photoelectric switch, and the swing sensing component 553 is a sensing column. When the sensing column moves into the photoelectric slot of the first photoelectric switch, the first photoelectric switch will send a feedback signal. After receiving the feedback signal, the controller of the grinder controls the first driving component 52 to rotate in the opposite direction.

[0076] likeFigure 1 and Figure 9 As shown in the figure, in order to prevent the arc-shaped end face 100 from abutting against the abrasive belt 3 too hard and causing the abrasive belt 3 to break during the process of the swing mechanism 5 swinging the product to be processed, the grinder further comprises a translation mechanism 6, which is connected with the swing support frame 51 and is used to drive the carrier clamping mechanism 2 to move along the length direction of the product to be processed through the swing support frame 51. During the process of the swing mechanism 5 swinging the product to be processed, the translation mechanism 6 drives the swing mechanism 5 and the carrier clamping mechanism 2 to reciprocate within a set length.

[0077] Specifically, the translation mechanism 6 comprises a translation support frame 61, a second driving member 62, a second connecting disc 63 and a second connecting rod 64. The translation support frame 61 is slidably arranged on the rack 1 and is located between the swing support frame 51 and the abrasive belt tensioning and conveying mechanism 4, and the swing support frame 51 is connected with the translation support frame 61. The second driving member 62 is arranged on the rack 1, and the second driving member 62 is connected with the second connecting disc 63 and is used to drive the second connecting disc 63 to rotate. One end of the second connecting rod 64 is eccentrically hinged with the second connecting disc 63, and the other end is hinged with the translation support frame 61. A linear guide rail 121 is arranged on the first mounting plate 12, and a sliding block 611 is arranged on the translation support frame 61, which cooperates with the linear guide rail 121. The second driving member 62 is a second speed reducer motor, which drives the second connecting disc 63 to rotate. The second connecting disc 63 drives the second connecting rod 64 to rotate, and the second connecting rod 64 drives the translation support frame 61 to slide along the linear guide rail 121.

[0078] The swing support frame 51 is arranged on the side of the translation support frame 61 away from the first mounting plate 12, and the bottom of the swing support frame 51 is fixedly connected with the translation support frame 61 through a connecting assembly 56, so that when the translation support frame 61 slides along the linear guide rail 121, the carrier clamping mechanism 2 can be driven to translate by the swing support frame 51.

[0079] Specifically, the connecting assembly 56 comprises two connecting blocks 561 and a connecting column 562. One of the two connecting blocks 561 is connected with the translation support frame 61, and the other connecting block 561 is connected with the swing support frame 51, and the two connecting blocks 561 are connected through the connecting column 562.

[0080] The first mounting plate 12 is provided with an avoiding opening for avoiding the carrier clamping mechanism 2. The hollow cavity of the translation support frame 61 and the hollow cavity of the swing support frame 51 are both arranged corresponding to the avoiding opening, so that the arc-shaped end face 100 can abut against the abrasive belt 3.

[0081] In order to limit the moving distance of the translation support frame 61, the translation mechanism 6 further comprises a translation limiting assembly 65, which comprises a translation sensing piece 652 and two translation limit position sensors 651, which are arranged on the rack 1 in parallel to the length direction of the product to be processed, and the translation support frame 61 is provided with the translation sensing piece 652, and the translation limit position sensors 651 send feedback signals after sensing the translation sensing piece 652. The two translation limit position sensors 651 are fixed on the first mounting plate 12 and located above the translation support frame 61, and the top of the translation support frame 61 is provided with the translation sensing piece 652, which is arranged as a sensing bending plate, one end of which is fixed on the top of the translation support frame 61 and the other end is upwardly bent. The translation limit position sensor 651 is a second photoelectric switch, and in the process of moving the translation support frame 61, when the upwardly bent end of the sensing bending plate moves into the photoelectric slot of the second photoelectric switch, the second photoelectric switch sends a feedback signal, and after the controller of the grinding machine receives the feedback signal of the second photoelectric switch, the second driving piece 62 is controlled to rotate in the opposite direction. The sensing bending plate can be provided with one or two, which is set according to the translation distance.

[0082] As shown in Figure 1 and Figure 10 In order to further ensure the grinding accuracy of the arc-shaped end surface 100 of the product to be processed, the grinding machine further comprises a pressure adjusting mechanism 7, which is arranged between the swing support frame 51 and the translation support frame 61, and is used to adjust the pressure of the arc-shaped end surface 100 of the product to be processed acting on the sand belt 3.

[0083] Specifically, the pressure adjustment mechanism 7 includes an adjustment screw 71, an adjustment nut 72, an adjustment spring 73, and a pressure sensor 74. The pressure sensor 74 is located on the side of the swing support frame 51 away from the translation support frame 61. The adjustment screw 71 passes through the pressure sensor 74 and the swing support frame 51 in sequence before connecting to the translation support frame 61. The adjustment nut 72 is located at the end of the adjustment screw 71 away from the translation support frame 61, and the adjustment spring 73 is located between the adjustment nut 72 and the pressure sensor 74. There is a certain distance between the translation support frame 61 and the swing support frame 51. When the adjustment nut 72 is turned, the adjustment spring 73 is compressed. The force of the adjustment spring 73 acts on the pressure sensor 74 and the swing support frame 51. The pressure sensor 74 can detect the pressure value at this time. The swing support frame 51 tends to move closer to the translation support frame 61, thereby driving the curved end surface 100 of the product to be processed on the carrier clamping mechanism 2 to move closer to the abrasive belt 3, increasing the contact force. At the same time, the pressure value detected by the pressure sensor 74 can be displayed on the display screen of the grinder, which makes it easier for the staff to adjust the pressure to the set pressure and more accurately control the grinding force, thereby achieving control of the grinding accuracy.

[0084] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A grinding machine, characterized in that The utility model relates to a kind of sanding machine, including: Rack (1); Carrier clamping mechanism (2), the carrier clamping mechanism (2) includes carrier seat (21) and clamping component (22), the clamping component (22) is located in the carrier seat (21), for clamping the product to be processed is positioned, and the arc-shaped end surface (100) of product to be processed is extended the carrier seat (21); Abrasive belt (3) and abrasive belt tensioning transmission mechanism (4), the abrasive belt tensioning transmission mechanism (4) is located on the rack (1), the abrasive belt tensioning transmission mechanism (4) is located in one side of the carrier clamping mechanism (2), the abrasive belt (3) is connected to the abrasive belt tensioning transmission mechanism (4), can be contacted with the arc-shaped end surface (100). Swing mechanism (5) is located on the rack (1), the swing mechanism (5) is connected with the carrier clamping mechanism (2), for driving the carrier clamping mechanism (2) to swing with set arc-shaped trajectory, so that the arc surface of the arc-shaped end surface (100) can be contacted with the abrasive belt (3) and ground.

2. The grinder of claim 1, wherein, The swing mechanism (5) includes swing support frame (51), first driving part (52), first connecting disc (53) and first connecting rod (54), the swing support frame (51) is located on the rack (1), the first driving part (52) is located on the swing support frame (51), the first driving part (52) is connected with the first connecting disc (53), for driving the first connecting disc (53) rotation, one end of the first connecting rod (54) is eccentrically hinged with the first connecting disc (53), and the other end is hinged with the carrier clamping mechanism (2), the first connecting disc (53) can drive the carrier clamping mechanism (2) to swing with set arc-shaped trajectory by the first connecting rod (54).

3. The grinder of claim 2, wherein, The first connecting rod (54) is arranged as L-shaped connecting rod, the end of the short arm of the L-shaped connecting rod is hinged with the carrier clamping mechanism (2), and the end of the long arm is hinged with the first connecting disc (53), and when the carrier clamping mechanism (2) is located at the lowest position of the set arc-shaped trajectory, the end of the long arm of the L-shaped connecting rod is located at one end of the first connecting disc (53) close to the abrasive belt tensioning transmission mechanism (4).

4. The grinder of claim 2, wherein, The swing mechanism (5) further includes swing limiting assembly (55), the swing limiting assembly (55) includes limiting arc-shaped plate (551), swing limit position sensor (552) and swing sensing part (553), the limiting arc-shaped plate (551) is equipped with the set arc-shaped trajectory, the swing limit position sensor (552) is provided with two, two swing limit position sensors (552) are respectively located at two ends of the set arc-shaped trajectory, the swing sensing part (553) is located at the outside of the carrier clamping mechanism (2), swing limit position sensor (552) can send feedback signal after sensing swing sensing part (553).

5. The grinder of claim 2, wherein, The grinder further comprises a translation mechanism (6) connected with the swing support frame (51) for driving the carrier clamping mechanism (2) to move along the length direction of the product to be processed through the swing support frame (51).

6. The grinder of claim 5, wherein, The translation mechanism (6) comprises a translation support frame (61), a second driving member (62), a second connecting disc (63) and a second connecting rod (64), the translation support frame (61) is slidably arranged on the rack (1) and located between the swing support frame (51) and the sand belt tensioning and conveying mechanism (4), the swing support frame (51) is connected with the translation support frame (61); the second driving member (62) is arranged on the rack (1), the second driving member (62) is connected with the second connecting disc (63) for driving the second connecting disc (63) to rotate; one end of the second connecting rod (64) is eccentrically hinged with the second connecting disc (63), and the other end is hinged with the translation support frame (61).

7. The grinder of claim 6, wherein, The translation mechanism (6) further comprises a translation limiting assembly (65), the translation limiting assembly (65) comprises a translation sensing member (652) and two translation limit position sensors (651), the two translation limit position sensors (651) are arranged on the rack (1) in parallel to the length direction of the product to be processed, the translation support frame (61) is provided with a translation sensing member (652), and the translation limit position sensors (651) send feedback signals after sensing the translation sensing member (652).

8. The grinder of claim 6, wherein, The grinder further comprises a pressure adjusting mechanism (7) arranged between the swing support frame (51) and the translation support frame (61) for adjusting the pressure of the arc-shaped end face (100) acting on the sand belt (3).

9. The grinder of claim 8, wherein, The pressure adjusting mechanism (7) comprises an adjusting screw (71), an adjusting nut (72), an adjusting spring (73) and a pressure sensor (74), the pressure sensor (74) is arranged on the side of the swing support frame (51) away from the translation support frame (61), the adjusting screw (71) is connected with the translation support frame (61) after sequentially penetrating through the pressure sensor (74) and the swing support frame (51), the adjusting nut (72) is arranged on the end of the adjusting screw (71) away from the translation support frame (61), and the adjusting spring (73) is arranged between the adjusting nut (72) and the pressure sensor (74).

10. The grinder of claim 1, wherein, The grinder further comprises a grinding support mechanism (8), the grinding support mechanism (8) comprises a grinding support frame (81) and a support flat plate (82), both ends of the grinding support frame (81) are connected with the rack (1), the support flat plate (82) is arranged in the grinding support frame (81) and arranged opposite to the carrier clamping mechanism (2), and the support flat plate (82) is located on the side of the sand belt (3) away from the carrier clamping mechanism (2) for supporting the sand belt (3).

11. The grinder of claim 10, wherein, The sand belt tension transmission mechanism (4) comprises a unwinding assembly (41), a winding assembly (42) and a guide assembly, the sand belt (3) is wound on the unwinding assembly (41), the guide assembly comprises two guide shafts (43), one of the guide shafts (43) is arranged close to the unwinding assembly (41), the other guide shaft (43) is arranged close to the winding assembly (42), the grinding support mechanism (8) is arranged between the two guide shafts (43), and the winding assembly (42) is used for collecting used sand belt (3).

12. The grinder of claim 11, wherein, An encoder (425) is arranged on the winding assembly (42), and the encoder (425) is used to detect whether the sand belt (3) is broken.

13. The grinder of any one of claims 1-12, wherein, The clamping assembly (22) comprises a clamping bottom plate (221) and a clamping cover plate (222), one side of the clamping bottom plate (221) is provided with a clamping groove (2211), and one end of the product to be machined away from the arc-shaped end face (100) is arranged in the clamping groove (2211); the clamping cover plate (222) and the clamping bottom plate (221) jointly clamp and fix the product to be machined.

14. The grinder of claim 13, wherein, The clamping cover plate (222) and the clamping bottom plate (221) are detachably connected, the clamping cover plate (222) and the clamping bottom plate (221) are locked by a locking assembly (223), the locking assembly (223) comprises a cam sleeve (2231) and a locker (2232), the cam sleeve (2231) is arranged on the clamping bottom plate (221), the locker (2232) is arranged on the clamping cover plate (222), and the locker (2232) is matched with the cam sleeve (2231) to lock the clamping cover plate (222) and the clamping bottom plate (221).

15. The grinder of any one of claims 1-12, wherein, The carrier clamping mechanism (2) further comprises a fine adjustment assembly (23) and a bearing plate (24), the bearing plate (24) is movably arranged on the carrier seat (21) and used for bearing the clamping assembly (22); the fine adjustment assembly (23) is arranged on the side of the carrier seat (21) away from the sand belt tension transmission mechanism (4), and the fine adjustment assembly (23) comprises a differential head (231), and a measuring rod of the differential head (231) abuts against the bearing plate (24).

16. The grinder of claim 15, wherein, Opposite sides of the carrier seat (21) are provided with sliding grooves (211), and both ends of the bearing plate (24) are slidably arranged in the sliding grooves (211) through sliding columns (241); the carrier clamping mechanism (2) further comprises a stretching assembly (25), the stretching assembly (25) comprises a fixed column (251) and a stretching spring (252), the fixed column (251) is arranged on one end of the side wall of the carrier seat (21) away from the sliding groove (211), one end of the stretching spring (252) is connected with the fixed column (251), and the other end is connected with the sliding column (241).

Images