Plane grinding equipment

Abstract

The utility model belongs to the technical field of machining equipment, and provides plane grinding equipment which is used for polishing and grinding a tiny workpiece with an inner hole. The plane grinding equipment comprises a grinding disc, a clamp and a driving mechanism, and the grinding disc is connected with a driving device and is driven by the driving device to operate; the clamp is provided with at least one pair of clamping blocks, and at least parts of the pair of clamping blocks are used for being connected in an inner hole of a workpiece in a penetrating mode and expanding mutually so as to fix the workpiece. An elastic mechanism is connected between the pair of clamping blocks, so that the pair of clamping blocks can draw close under the action of external force and expand outwards after the external force disappears; and the driving mechanism is connected with the clamp and is used for driving the clamp to move to the grinding disc, so that a workpiece fixed on the clamp is in contact with the grinding disc. The grinding device aims at solving the technical problem that in the prior art, grinding equipment is difficult to clamp a tiny workpiece, and consequently a machining part on the workpiece cannot be machined in place.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of mechanical processing equipment, and particularly relates to a plane grinding device. BACKGROUND

[0002] With the continuous progress of society and the rapid development of science and technology, the demand for many products in the market is increasing, and the requirements are also increasing. Therefore, both product quality and production efficiency must be ensured to meet market demand.

[0003] After the machining of the product is completed, the surface roughness is high, especially for 3D printing products, polishing and grinding are needed to improve the quality of the product. The existing processing method is that the operator holds the grinding part to grind, that is, the machine can only clamp and fix the workpiece, and then the operator operates the grinding part on the machine to polish and grind the surface of the workpiece. It can be seen that this method completely depends on the work experience of the operator, and the polishing effect cannot be unified.

[0004] In addition, small workpieces are difficult to fix. When the workpiece is clamped on the clamp, the outer periphery of the workpiece cannot have an interference structure, otherwise it will hinder the polishing and grinding of the workpiece, so that part of the position on the workpiece cannot be in contact with the grinding part, and the workpiece needs to be frequently disassembled from the clamp to adjust the fixing posture, affecting the processing efficiency. SUMMARY

[0005] The purpose of the embodiment of the application is to provide a plane grinding device to solve the technical problem that the grinding device of the prior art is difficult to clamp small workpieces, so that the machining parts on the workpiece cannot be machined in place.

[0006] To achieve the above purpose, the technical scheme adopted by the application is: a plane grinding device is provided for polishing and grinding small workpieces with an inner hole; the plane grinding device comprises:

[0007] A grinding disc is connected with a driving device and operates under the driving of the driving device;

[0008] A clamp is provided with at least one pair of clamping blocks, at least part of the pair of clamping blocks is used to expand in the inner hole of the workpiece to fix the workpiece; a resilient mechanism is connected between the pair of clamping blocks, so that the pair of clamping blocks can approach under the action of external force, and expand outward after the external force disappears;

[0009] A driving mechanism is connected with the clamp and is used to drive the clamp to move to the grinding disc, so that the workpiece fixed on the clamp is in contact with the grinding disc.

[0010] The plane grinding device provided by the application has the beneficial effects that, compared with the prior art, the plane grinding device comprises a grinding disc, a clamp and a driving mechanism, the clamp is provided with at least one pair of clamping blocks for fixing a workpiece, and an elastic mechanism is connected between each pair of clamping blocks to enable at least part of the clamping blocks to be expanded in the inner hole of the workpiece to fix the workpiece from the inside, so that the outer surface of the workpiece can be completely exposed, and the problem that the clamping piece on the traditional clamp easily blocks the polished part on the outer surface of the workpiece is effectively solved. In this way, the grinding piece, such as the grinding disc of the application, can be in complete contact with the surface to be processed on the workpiece and polish and grind the surface. The workpiece does not need to be disassembled and assembled during processing to adjust the fixed posture of the workpiece, effectively avoiding damage to the workpiece during frequent clamping, reducing the processing difficulty and improving the polishing quality.

[0011] In the plane grinding device provided by the embodiment of the application, a plurality of pairs of clamping blocks can be arranged on each clamp, and each pair of clamping blocks is used for fixing a workpiece. When the driving mechanism drives the clamp to move to the grinding disc, the workpieces on the clamping blocks can be in contact with the grinding disc, so that batch processing is realized and the processing efficiency is effectively improved.

[0012] The structure of the clamp is improved, each pair of clamping blocks comprises an upper clamping block and a lower clamping block, the elastic mechanism comprises a connecting shaft and an elastic piece, the upper clamping block is provided with a shaft hole, the connecting shaft is arranged on the lower clamping block and can extend into the shaft hole of the upper clamping block, and the elastic piece is sleeved on the connecting shaft and abuts against the upper clamping block and the lower clamping block at two ends. In this way, under the action of an external force, the upper clamping block and the lower clamping block can be close to each other to compress the elastic piece, so that the fixation of the workpiece is released and the workpiece is conveniently taken away from the clamping block. Or, at least part of the upper clamping block and the lower clamping block that are close to each other during clamping can smoothly penetrate into the inner hole of the workpiece. When the external force disappears, the elastic piece restores to push the upper clamping block and the lower clamping block away from each other and keep them expanded, so that the workpiece is fixed from the inner hole of the workpiece, and the fixing effect of the workpiece is effectively ensured.

[0013] In one embodiment, the clamp further comprises a base and a limiting seat that are spliced with each other, the lower clamping block is integrally connected to the base, the upper clamping block is provided with a sliding block, the limiting seat is provided with a stroke groove for mounting the sliding block, and the limiting seat limits the movement range of the upper clamping block on the lower clamping block through the stroke groove. In this way, only one clamping block in each pair of clamping blocks needs to be pressed to make the pair of clamping blocks close to each other to fix the workpiece, so that the clamping operation of the workpiece is effectively simplified and the processing efficiency is improved.

[0014] In one embodiment, a plurality of pairs of the clamping blocks are provided on the clamp, and the plurality of pairs of the clamping blocks are arranged obliquely on the end face of the clamp towards the grinding disc; the limiting seat and the base have an oblique surface for mutual splicing, the base is provided with a guide column on the oblique surface, and the limiting seat is provided with a guide hole for mutual splicing with the guide column. On the one hand, the oblique surface is used for mutual splicing between the limiting seat and the base to match the coaxial connection of each sliding block and each stroke slot when each pair of clamping blocks is arranged obliquely on the clamp. On the other hand, the guide column and the guide hole are used for automatic alignment of each stroke slot on the limiting seat and each sliding block on the upper clamping block when the limiting seat is spliced on the base, so as to play a role of installation foolproof.

[0015] The structure of the driving mechanism is improved, the driving mechanism comprises a driver and a movable seat, and the clamp is arranged on the movable seat; the output end of the driver is connected with the movable seat and is used for driving the movable seat to move towards the grinding disc, so that the workpieces on each clamp can be in synchronous and smooth contact with the grinding disc, and the uniformity of polishing force on each workpiece is ensured.

[0016] In one embodiment, the planar grinding device further comprises a pair of parallel rails extending towards the grinding disc, and the two sides of the movable seat are respectively provided with connecting feet which are respectively installed on the pair of parallel rails. In this way, the parallel rails are used for guiding the movable seat to translate along the length direction of the rails, so as to effectively improve the stability of the movable seat when being driven to move.

[0017] In one embodiment, the movable seat is provided with a mounting seat for arranging the clamp, the mounting seat is provided with an adjusting mechanism for adjusting the distance between the clamp and the grinding disc, the adjusting mechanism comprises a base plate and a movable plate, and the clamp is arranged on the movable plate; the base plate is provided with a sliding rail, a handle and a fixed lug for mounting the handle, and the movable plate is installed on the sliding rail; the fixed lug is provided with a threaded hole, the handle is provided with a push rod, the outer periphery of the push rod is provided with an external thread for screwing with the threaded hole, and the push rod passes through the threaded hole and abuts against the movable plate and is used for pushing the movable plate to move on the base plate along the sliding rail. In this way, the push rod on the handle can push the movable plate to move on the base plate by rotating the handle, so as to finely adjust the position of the clamp, and the workpiece on the clamp can be kept close to the grinding surface of the grinding disc, and the contact stability of the workpiece on the clamp and the grinding disc is improved.

[0018] In one embodiment, a limiting lug is further arranged on the base plate, and a stroke hole extending in parallel with the slide rail is formed in the limiting lug; a knob and a mounting hole for mounting the knob are further included on the movable plate, and an extending shaft of the knob passes through the stroke hole in the limiting lug and is mounted on the mounting hole of the movable plate. In this way, when the knob is loosened, the handle can be operated to drive the push rod to push the movable plate to move on the base plate; and when the movable plate is moved to a position, the knob is tightened to lock the movable plate, thereby improving the positioning effect on the clamp.

[0019] The structure of the entire plane grinding device is further improved, and a workbench is further included on the plane grinding device, and the grinding disc, the clamp, and the driving mechanism are arranged on the workbench; and a collecting disc is further arranged on the workbench and located below the grinding disc. In this way, the collecting disc is used to collect the powder particles falling from the workpiece during polishing of the workpiece.

[0020] In one embodiment, a mounting groove matched with the shape of the collecting disc and a step arranged around the mounting groove are formed in the workbench, a convex edge is arranged on the outer periphery of the collecting disc, and the collecting disc is rested on the step by the convex edge. In this way, the collecting disc is detachably arranged on the mounting groove of the workbench, and the collecting disc can be taken out from the workbench for cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0022] Figure 1 A schematic view of a three-dimensional structure of a workpiece;

[0023] Figure 2 A schematic view of the overall structure of the plane grinding device provided in the embodiments of the present application;

[0024] Figure 3 A schematic view of the three-dimensional structure of the plane grinding device provided in the embodiments of the present application;

[0025] Figure 4 A schematic view of the clamping structure of the clamp and the workpiece provided in the embodiments of the present application;

[0026] Figure 5 A sectional view of the clamping structure of the clamp and the workpiece provided in the embodiments of the present application;

[0027] Figure 6 An exploded structural schematic view of the clamp provided in the embodiments of the present application Figure 1 ;

[0028] Figure 7 An exploded structural schematic of the clamp provided for the embodiment of the present application Figure 2 ;

[0029] Figure 8 A perspective structural schematic of the limiting seat provided for the embodiment of the present application

[0030] Figure 9 An exploded structural schematic of the clamp provided for the embodiment of the present application Figure 3 ;

[0031] Figure 10 A whole structural schematic of the driving mechanism provided for the embodiment of the present application

[0032] Figure 11 An exploded structural schematic of the adjusting mechanism provided for the embodiment of the present application

[0033] Figure 12 A perspective structural schematic of the base plate provided for the embodiment of the present application

[0034] Figure 13 A perspective structural schematic of the movable plate provided for the embodiment of the present application

[0035] Figure 14 A front view of the plane grinding device provided for the embodiment of the present application

[0036] Figure 15 An exploded structural schematic of the plane grinding device provided for the embodiment of the present application

[0037] Figure 16 An assembly structural schematic of the collecting disc and the workbench provided for the embodiment of the present application.

[0038] In the drawings, various reference numbers refer to:

[0039] 100 - workpiece

[0040] 200 - driving mechanism

[0041] 1 - grinding disc

[0042] 2 - clamp; 20 - inclined surface; 21 - clamping block; 211 - upper clamping block; 212 - lower clamping block; 213 - shaft hole; 214 - sliding block

[0043] 22 - base; 221 - guide post; 23 - limiting seat; 231 - stroke slot; 232 - guide hole

[0044] 3 - elastic mechanism; 31 - connecting shaft; 32 - elastic member

[0045] 4 - driver; 41 - control rod

[0046] 5 - movable seat; 51 - connecting leg; 52 - mounting seat;

[0047] 6 - track;

[0048] 7 - adjusting mechanism; 71 - base plate; 711 - sliding rail; 712 - handle; 7120 - push rod; 713 - fixing lug; 714 - threaded hole; 715 - limiting lug; 716 - stroke hole; 717 - spring; 718 - first fastener;

[0049] 72 - movable plate; 721 - semispherical part; 722 - knob; 723 - second fastener;

[0050] 8 - workbench; 81 - collecting disc; 811 - raised edge; 82 - mounting groove; 821 - step. DETAILED DESCRIPTION

[0051] In order to make the technical problems solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0055] In the embodiments of the present application, as Figure 1As shown, the workpiece 100 to be processed is a special-shaped micro workpiece, and the workpiece 100 has a long strip-shaped inner hole M. Since the volume of the workpiece 100 is very small, and the workpiece 100 has a linear inner hole M, it is difficult to be formed by machining. At present, it can only be formed by 3D printing, but the surface roughness of the workpiece 100 obtained by 3D printing is high, and polishing is required to meet the processing requirements.

[0056] The traditional processing method is that the operator holds the polishing piece by hand to polish, that is, the machine can only clamp and fix the workpiece 100, and then the operator operates the polishing piece on the machine to polish according to the surface condition of the workpiece 100. It can be seen that this method completely depends on the working experience of the operator, and the polishing effect cannot be unified.

[0057] Among them, the micro workpiece 100 is not easy to fix, and the clamp on the machine generally clamps the workpiece 100 by using a clamp fork. The clamp fork is easy to clamp the workpiece 100 and is easy to form a blocking part on the workpiece 100, which interferes with the polishing operation, so that part of the position on the workpiece 100 cannot be in contact with the polishing piece. Therefore, it is necessary to constantly adjust the clamping posture of the workpiece 100 during processing, so that the whole processing process becomes very cumbersome, the workpiece 100 is easy to be damaged in the clamping process, the processing efficiency is low, and the product quality is affected.

[0058] Therefore, the embodiment of the present application provides a new type of plane grinding equipment to replace the manual operation of polishing the surface of the workpiece 100 and improve the processing efficiency. For the micro workpiece 100 and the special structure on the workpiece 100, the clamp for fixing the workpiece 100 is redesigned, which effectively solves the clamping difficulty of the traditional grinding equipment for the micro workpiece 100, and the problem that the processing position on the workpiece 100 cannot be processed in place. Now it will be described in detail.

[0059] Please refer to Figure 2 and Figure 3 , the plane grinding equipment is used for polishing the micro workpiece 100 with the inner hole M. The plane grinding equipment comprises a grinding disc 1, a clamp 2 and a driving mechanism 200.

[0060] The grinding disc 1 is connected with a driving device (not shown in the figure), and the grinding disc 1 operates under the driving of the driving device. In the embodiment, as shown in Figure 3 , the equipment has two grinding discs 1, and the driving device can be arranged inside the container N. The driving device can preferably adopt a driving motor, the output shaft of the driving motor is connected with the grinding disc 1 through a transmission mechanism (not shown in the figure), and the two grinding discs 1 are driven to operate synchronously. Among them, the transmission mechanism can be a linkage assembly composed of a transmission belt and a gear set, which is not limited here.

[0061] Please refer toFigure 3 and Figure 4 The clamp 2 is provided with at least one pair of clamping blocks 21, at least part of which is used to be inserted into the inner hole M of the workpiece 100 and expand to fix the workpiece 100. The pair of clamping blocks 21 are connected by an elastic mechanism 3, which is used to enable the pair of clamping blocks 21 to approach under the action of an external force, and to expand outwardly after the external force disappears. In this way, the pair of clamping blocks 21 are inserted into the inner hole M of the workpiece 100 and kept expanded, thereby fixing the workpiece 100 in the inner hole M of the workpiece 100, so that the outer surface of the workpiece 100 can be completely exposed, which is beneficial to polishing and grinding.

[0062] In the embodiment, as shown in Figure 4 , the clamp 2 is provided with multiple pairs of clamping blocks 21 on the end face facing the grinding disc 1, and each clamping block 21 is arranged side by side on the end face of the clamp 2. Each pair of clamping blocks 21 can fix one workpiece 100, thereby realizing batch processing and improving processing efficiency.

[0063] Please refer to Figure 3 , the driving mechanism 200 is connected with the clamp 2 and is used to drive the clamp 2 to move to the grinding disc 1, so that the workpiece 100 fixed on the clamp 2 contacts the grinding disc 1. In this way, each workpiece 100 on the clamp 2 can be in contact with the grinding surface of the grinding disc 1 at the same time, effectively ensuring the uniformity of the polishing and grinding force.

[0064] The planar grinding device provided by the present application includes a grinding disc 1, a clamp 2, and a driving mechanism 200. The clamp 2 has at least one pair of clamping blocks 21 for fixing a workpiece 100. An elastic mechanism 3 is connected between each pair of clamping blocks 21 to enable at least part of the clamping blocks 21 to be inserted into the inner hole M of the workpiece 100 and expand to fix the workpiece 100 from the inside. In this way, the outer surface of the workpiece 100 can be completely exposed, effectively solving the problem that the clamping members on the traditional clamp 2 easily block the polishing part on the outer surface of the workpiece 100. In this way, the grinding member, such as the grinding disc 1 of the embodiment, can completely contact and polish the surface to be processed on the workpiece 100. There is no need to disassemble and assemble the workpiece 100 during processing to adjust the fixing posture of the workpiece 100, effectively avoiding damage to the workpiece 100 during frequent clamping, reducing the processing difficulty, and improving the polishing quality.

[0065] For the clamping operation of the workpiece 100, the force can be applied to the pair of clamping blocks 21 during the clamping process to compress the elastic mechanism 3 between the clamping blocks 21, so that the clamping blocks 21 are close to each other, the unlocking operation is realized, the workpiece 100 is conveniently taken away from the clamping blocks 21, or the workpiece 100 is installed on the clamping blocks 21; when the force applied to the clamping blocks 21 disappears, the elastic mechanism 3 between the clamping blocks 21 automatically restores and keeps expanding, and the fixing of the entire workpiece 100 from the inner hole M of the workpiece 100 is realized.

[0066] On the planar grinding device in the embodiment of the present application, a plurality of pairs of clamping blocks 21 can be arranged on each clamp 2, and each pair of clamping blocks 21 is used to fix a workpiece 100. When the driving mechanism 200 drives the clamp 2 to move to the grinding disc 1, the workpieces 100 on the clamping blocks 21 can all contact the grinding disc 1, so that batch processing is realized, and the processing efficiency is effectively improved.

[0067] For the structure of the clamp 2, in one embodiment of the present application, please refer to Figure 4 、 Figure 5 and Figure 6 , each pair of clamping blocks 21 includes an upper clamping block 211 and a lower clamping block 212, the elastic mechanism 3 includes a connecting shaft 31 and an elastic piece 32, the upper clamping block 211 has a shaft hole 213, the connecting shaft 31 is arranged on the lower clamping block 212 and can extend into the shaft hole 213 of the upper clamping block 211.

[0068] The elastic piece 32 can preferably adopt a spring, the elastic piece 32 is sleeved on the connecting shaft 31, and the two ends of the elastic piece 32 abut against the upper clamping block 211 and the lower clamping block 212, respectively.

[0069] In this way, under the action of an external force, the upper clamping block 211 and the lower clamping block 212 can be close to each other to compress the elastic piece 32, so that the fixed posture of the workpiece 100 is released, and the workpiece 100 is conveniently taken away from the clamping blocks 21; or at least part of the upper clamping block 211 and the lower clamping block 212 close to each other during clamping can smoothly penetrate into the inner hole M of the workpiece 100. When the external force disappears, the elastic piece 32 restores to push the upper clamping block 211 and the lower clamping block 212 away from each other and keep expanding, so that the workpiece 100 is fixed from the inner hole M of the workpiece 100, and the fixing effect of the workpiece 100 is effectively ensured.

[0070] In the embodiment of the present application, please refer to Figure 5 、 Figure 7 and Figure 8 , the clamp 2 further includes a base 22 and a limiting seat 23 which are spliced with each other, and the lower clamping block 212 is integrally connected to the base 22.

[0071] The upper clamp block 211 is provided with a sliding block 214, and the limiting seat 23 is provided with a stroke groove 231 for installing the sliding block 214, and the limiting seat 23 limits the movement range of the upper clamp block 211 on the lower clamp block 212 by the stroke groove 231.

[0072] It can be seen that the upper clamp block 211 is arranged on the lower clamp block 212 like a key, and the upper clamp block 211 is pressed to make the upper clamp block 211 and the lower clamp block 212 close to each other. After the pressing force on the upper clamp block 211 disappears, the upper clamp block 211 expands upward under the restoration of the elastic mechanism 3. Since the sliding block 214 on the upper clamp block 211 is limited by the stroke groove 231 on the limiting seat 23, the upper clamp block 211 will not be separated from the clamp 2, effectively limiting the movement range of the clamp block 21.

[0073] In this way, only one clamp block 21 in each pair of clamp blocks 21 needs to be pressed to make the pair of clamp blocks 21 close to each other to fix the workpiece 100, effectively simplifying the clamping operation of the workpiece 100 and effectively improving the machining efficiency.

[0074] In the embodiment of the present application, please refer to Figure 4 , the clamp 2 is provided with a plurality of pairs of clamp blocks 21, and the plurality of pairs of clamp blocks 21 are arranged obliquely on the end face of the clamp 2 facing the grinding disc 1, so as to cooperate with the rotation track of the circular grinding disc 1, so that the textures on the surfaces of the polished workpieces 100 are uniform.

[0075] In this embodiment, since the clamp blocks 21 are arranged obliquely on the clamp 2, and the lower clamp block 212 is integrally connected with the base 22, the upper clamp block 211 needs to move linearly on the lower clamp block 212. Therefore, please refer to Figure 4 , Figure 8 and Figure 9 , the limiting seat 23 and the base 22 have an inclined surface 20 that is spliced with each other, so as to cooperate with the coaxial connection of each sliding block 214 and each stroke groove 231 when each pair of clamp blocks 21 is arranged obliquely on the clamp 2.

[0076] Further, in order to accurately install and connect the stroke groove 231 on the limiting seat 23 with the sliding block 214 on each upper clamp block 211, in this embodiment, please refer to Figure 8 and Figure 9 , the base 22 is provided with a guide column 221 located on the inclined surface 20, and the limiting seat 23 is provided with a guide hole 232 corresponding to the position of the guide column 221. In this way, by cooperating the guide column 221 with the guide hole 232, when the limiting seat 23 is spliced on the base 22, each stroke groove 231 on the limiting seat 23 is automatically aligned with the sliding block 214 on the upper clamp block 211, so as to play the role of installation foolproof.

[0077] For the structure of the driving mechanism 200, in one embodiment of the present application, please refer toFigure 10 The driving mechanism 200 comprises a driver 4 and a movable seat 5, and the clamp 2 is arranged on the movable seat 5. The driver 4 can preferably adopt a linear cylinder, and an output end of the driver 4 is connected with the movable seat 5 and is used for driving the movable seat 5 to move towards the grinding disc 1.

[0078] In the embodiment, the driving mechanism 200 further comprises a control rod 41 electrically connected with the driver 4, so that the driver 4 can be controlled to drive the movable seat 5 to move by operating the control rod 41 manually, thereby moving the clamp 2 on the movable seat 5 towards the grinding disc 1, and enabling each workpiece 100 on the clamp 2 to be in synchronous contact with the grinding surface of the grinding disc 1, so as to effectively ensure the uniformity of polishing force on each workpiece 100.

[0079] Preferably, in an embodiment of the present application, referring to Figure 10 The planar grinding device further comprises a pair of parallel rails 6 extending towards the grinding disc 1, and the movable seat 5 is provided with connecting feet 51 on two sides, and the connecting feet 51 on the two sides are respectively installed on the pair of parallel rails 6.

[0080] In the embodiment, the bottom of the connecting feet 51 is provided with an installation groove (not shown in the figure), and the connecting feet 51 are installed on the rails 6 by means of the installation groove.

[0081] In this way, the parallel rails 6 play a guiding role, enabling the movable seat 5 to translate along the length direction of the rails 6, and effectively improving the stability of the movable seat 5 being driven to move.

[0082] In actual application, the driver 4 drives the movable seat 5 carrying the clamp 2 to move towards the grinding disc 1, and since the clamp 2 is provided with a plurality of pairs of clamping blocks 21, each pair of clamping blocks 21 is fixed with a workpiece 100, when the clamp 2 moves towards the grinding disc 1, there is an unstable condition that the surface to be machined of some workpieces 100 is in contact with the grinding disc 1, or as the grinding surface of the grinding disc 1 is gradually worn, the grinding surface of the grinding disc 1 is not uniformly in contact with the surface of each workpiece 100, so that the surface of some workpieces 100 cannot be in contact with the grinding surface of the grinding disc 1 in place, affecting the uniformity of machining.

[0083] Herein, in an embodiment of the present application, referring to Figure 10 and Figure 11 The movable seat 5 is provided with a mounting seat 52 for arranging the clamp 2, and the mounting seat 52 is provided with an adjusting mechanism 7 for adjusting the distance between the clamp 2 and the grinding disc 1.

[0084] As shown in Figure 11 , the adjusting mechanism 7 comprises a base plate 71 and a movable plate 72 arranged on the base plate 71, and the clamp 2 is arranged on the movable plate 72.

[0085] The base plate 71 is provided with a sliding rail 711, a handle 712, and a fixing lug 713 for mounting the handle 712, and the movable plate 72 is mounted on the sliding rail 711. The fixing lug 713 of the base plate 71 is provided with a threaded hole 714, the handle 712 is integrally connected with a push rod 7120, the outer periphery of the push rod 7120 is provided with external threads (not shown) which are screwed with the threaded hole 714, and the push rod 7120 of the handle 712 passes through the threaded hole 714 and abuts against the movable plate 72. The handle 712 is used for manual rotation operation, so that the push rod 7120 of the handle 712 pushes the movable plate 72 to move on the base plate 71 along the sliding rail 711.

[0086] Preferably, the part of the movable plate 72 abutting against the end of the push rod 7120 of the handle 712 is a hemispherical part 721, which is beneficial to reduce the friction area with the end of the push rod 7120, thereby reducing the damping force and effectively reducing the manual force for rotating the handle 712.

[0087] In this way, through the rotation operation of the handle 712, the push rod 7120 on the handle 712 can push the movable plate 72 to move on the base plate 71, thereby realizing fine adjustment of the position of the clamp 2 and enabling the workpiece 100 on the clamp 2 to be tightly attached to the grinding surface of the grinding disc 1, and further improving the contact stability of the workpiece 100 on the clamp 2 and the grinding disc 1.

[0088] In the embodiment, as shown in Figure 10 , the base plate 71 is further provided with a limiting lug 715 vertically arranged on one side of the base plate 71, and the limiting lug 715 is provided with a stroke hole 716 which is a long hole and is arranged in parallel with the sliding rail 711.

[0089] The movable plate 72 further comprises a knob 722 and a mounting hole (not shown) for mounting the knob 722, and the extending shaft (not shown) of the knob 722 passes through the stroke hole 716 of the limiting lug 715 and is mounted on the mounting hole of the movable plate 72.

[0090] In this way, when the knob 722 is loosened, the handle can be operated to drive the push rod 7120 to push the movable plate 72 to move on the base plate 71, and when the movable plate 72 is moved to the position, the knob 722 is tightened to lock the movable plate 72, thereby improving the positioning effect of the clamp 2.

[0091] Preferably, in the embodiment, as shown in Figure 12 and Figure 13 , the base plate 71 is further provided with a spring 717 and a first fastener 718 for fixing one end of the spring 717. The bottom of the movable plate 72 is provided with a second fastener 723 for fixing the other end of the spring 717. The first fastener 718 and the second fastener 723 can preferably be screws.

[0092] In this way, when the rotating handle 712 moves the push rod 7120 to move the movable plate 72, the spring 717 is stretched along with the movement of the movable plate 72. In the reset operation, the knob 722 is loosened, and the elastic restoring force of the spring 717 is used to make the semispherical part 721 on the movable plate 72 tightly contact with the end of the push rod 7120, and make the movable plate 72 retreat and reset along with the reverse rotation of the handle 712.

[0093] In the embodiments of the present application, as shown in Figure 2 , Figure 3 and Figure 14 , the planar grinding device is provided with at least two grinding discs 1 arranged side by side, and the grinding surfaces on each grinding disc 1 face the same direction.

[0094] The movable seat 5 is a platform arranged transversely in front of the grinding disc 1, and the output shaft of the driver 4 is connected to the center of the movable seat 5 to form a T-shaped structure.

[0095] The movable seat 5 is provided with at least two mounting seats 52, which are respectively one-to-one corresponding to the positions of the two grinding discs 1, and each mounting seat 52 is provided with a clamp 2. The end surface of each clamp 2 facing the grinding disc 1 is respectively located on the grinding surface of each grinding disc 1 and is arranged close to the outer edge of the grinding disc 1, so as to effectively utilize the grinding surface of the grinding disc 1 for polishing and grinding.

[0096] In other embodiments (not shown), four mounting seats 52 can also be arranged on the movable seat 5, and each mounting seat 52 is provided with a clamp 2. Among them, every two mounting seats 52 correspond to the position of one grinding disc 1, and the end surface projections of the clamps 2 on the two mounting seats 52 facing the grinding disc 1 are symmetrically located on the grinding surface of the same grinding disc 1, which is beneficial to maximize the utilization of the grinding surface of the grinding disc 1 for polishing and grinding.

[0097] For the overall structure of the planar grinding device, in one embodiment of the present application, please refer to Figure 15 , the planar grinding device further comprises a workbench 8, and the above-mentioned grinding disc 1, clamp 2 and driving mechanism 200 are arranged on the workbench 8. Among them, the workbench 8 is further provided with a collecting disc 81 located below the grinding disc 1, which is used to collect the powder particles falling from the workpiece 100 during polishing of the workpiece 100.

[0098] In actual application, water can be preferably filled in the collecting disc 81 to make the powder particles gather in the water, avoiding the diffusion of the powder particles around.

[0099] In the present embodiment, please refer to Figure 15 and Figure 16The workbench 8 is further provided with a mounting groove 82 for mounting the collecting disc 81, the mounting groove 82 is matched with the shape of the collecting disc 81. The workbench 8 is further provided with a step 821 arranged around the mounting groove 82. Correspondingly, the outer periphery of the collecting disc 81 is provided with a protruding edge 811, the protruding edge 811 of the outer periphery of the collecting disc 81 is rested on the step 821.

[0100] In this way, the collecting disc 81 is detachably arranged on the mounting groove 82 of the workbench 8, which is beneficial for taking out the collecting disc 81 from the workbench 8 for cleaning.

[0101] In other embodiments (not shown), the collecting disc 81 can also be fixed to the workbench 8, and a pump body (not shown) and a drain pipe (not shown) are additionally arranged to be connected with the collecting disc 81, the pump body is used to drain the liquid in the collecting disc 81, so as to realize the rapid cleaning of the collecting disc 81, thereby avoiding the need to stop the machine to take out the collecting disc 81 for cleaning, which is beneficial for prolonging the working time of the equipment.

[0102] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flat lapping apparatus for polishing a micro workpiece having an inner hole, characterized by, The planar grinding device comprises: a grinding disc connected with a driving device and rotating under the driving of the driving device; a clamp provided with at least one pair of clamping blocks, at least part of the clamping blocks being used for being inserted into an inner hole of a workpiece and being expanded to fix the workpiece, elastic mechanisms being connected between the clamping blocks to enable the clamping blocks to be close to each other under the action of an external force and to be expanded outward after the external force disappears; a driving mechanism connected with the clamp and used for driving the clamp to move to the grinding disc to make the workpiece fixed on the clamp contact with the grinding disc.

2. The planar polishing apparatus according to claim 1, characterized by: Each pair of clamping blocks comprises an upper clamping block and a lower clamping block, the elastic mechanisms comprise connecting shafts and elastic members, the upper clamping block is provided with a shaft hole, the connecting shafts are arranged on the lower clamping blocks and can be inserted into the shaft hole of the upper clamping block, and the elastic members are sleeved on the connecting shafts and abut against the upper clamping block and the lower clamping block at two ends respectively.

3. The planar lapping apparatus of claim 2, wherein: The clamp further comprises a base and a limiting seat which are spliced with each other, the lower clamping block is integrally connected on the base, the upper clamping block is provided with a sliding block, the limiting seat is provided with a stroke groove used for installing the sliding block, and the limiting seat limits the moving range of the upper clamping block on the lower clamping block through the stroke groove.

4. The apparatus according to claim 3, wherein: A plurality of pairs of clamping blocks are arranged on the clamp, the plurality of pairs of clamping blocks are arranged obliquely on the end surface of the clamp facing the grinding disc, the limiting seat and the base have oblique surfaces which are spliced with each other, the base is provided with guide columns located on the oblique surfaces, and the limiting seat is provided with guide holes which are inserted with the guide columns.

5. The apparatus according to claim 1, wherein: The driving mechanism comprises a driver and a movable seat, and the clamp is arranged on the movable seat; the output end of the driver is connected with the movable seat and is used for driving the movable seat to move to the grinding disc.

6. The planar lapping apparatus of claim 5, wherein: The planar grinding device further comprises a pair of parallel rails extending to the direction of the grinding disc, and the two sides of the movable seat are respectively provided with connecting feet which are installed on the pair of parallel rails.

7. The planar lapping apparatus of claim 5, wherein: The movable seat is provided with a mounting seat used for arranging the clamp, the mounting seat is provided with an adjusting mechanism used for adjusting the distance between the clamp and the grinding disc, the adjusting mechanism comprises a base plate and a movable plate, and the clamp is arranged on the movable plate; the base plate is provided with a sliding rail, a handle and a fixed lug used for installing the handle, the movable plate is installed on the sliding rail, the fixed lug is provided with a threaded hole, the handle is provided with a push rod, the outer periphery of the push rod is provided with external threads which are screwed with the threaded hole, the push rod passes through the threaded hole and abuts against the movable plate, and the push rod is used for pushing the movable plate to move on the base plate along the sliding rail.

8. The planar lapping apparatus of claim 7, wherein: The base plate is further provided with a limiting lug, the limiting lug is provided with a stroke hole extending in parallel with the sliding rail, the movable plate further comprises a knob and a mounting hole used for installing the knob, the extending shaft of the knob passes through the stroke hole of the limiting lug and is installed on the mounting hole of the movable plate.

9. The apparatus according to any one of claims 1 to 8, wherein: The planar grinding device further comprises a workbench, the grinding disc, the clamp and the driving mechanism are arranged on the workbench; and a collecting disc is arranged below the grinding disc on the workbench.

10. The planar lapping apparatus of claim 9, wherein: The workbench is provided with a mounting groove matched with the shape of the collecting disc and a step arranged around the mounting groove, and the collecting disc is provided with a convex edge on the outer periphery, and the collecting disc is rested on the step by the convex edge.

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