Numerical control grinding machine for closed bearing

Abstract

The numerical control grinding machine comprises a numerical control grinding machine body, a control platform is fixedly hung on the side face of the numerical control grinding machine body, a perspective window is arranged on the front face of the numerical control grinding machine body, and a mechanical arm and a grinding wheel are arranged on the front face and the back face of an inner cavity of the numerical control grinding machine body respectively. In order to solve the problem that adjustment cannot be carried out according to the width and thickness of a workpiece when the workpiece is clamped, the clamping mechanism and the stability detection mechanism are matched with each other, and an extrusion ring is controlled to move through an electric cylinder, so that a clamping block can move and clamp the workpieces with different widths; and meanwhile, when the clamping blocks move relatively, the workpieces with different thicknesses can be pressed through mutual extrusion of spring ejector rods at the ends of pressing plates, and through elastic extrusion of the spring ejector rods, a rotating plate at the bottom of an arc-shaped plate moves downwards to press the bottoms of the workpieces, so that the workpieces with different widths and thicknesses are clamped.

Description

Technical Field

[0001] The invention relates to the field of workpiece grinding, and in particular to a CNC grinding machine for closed bearings. Background Art

[0002] As a high-precision and high-efficiency processing equipment, CNC grinders are widely used in the grinding of various workpieces. The CNC grinder is driven by a spindle motor to convert electrical energy into mechanical energy, which in turn drives the grinding wheel to rotate at high speed. When the workpiece contacts the grinding wheel, grinding is performed according to the set program. By controlling parameters such as the spindle motor speed, feed speed and grinding depth, fine processing of the workpiece is achieved. However, during processing, some equipment cannot automatically adjust the width and thickness of the workpiece clamping.

[0003] For example: The "centerless CNC grinder" disclosed in the Chinese utility model patent (application number: CN202122970141.4) discloses in its specification: Existing grinders all manually control the feed of the grinders, through toothed screws and manual feeding, with low grinding precision and low efficiency. At the same time, the existing grinder fixtures cannot be adjusted according to the width and thickness of the workpiece when clamping the workpiece, which is very inconvenient; the above patents can prove the defects of the prior art.

[0004] Therefore, we make improvements to this and propose a CNC grinding machine for closed bearings. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing grinding machine fixture cannot be adjusted according to the width and thickness of the workpiece when clamping the workpiece, which is very inconvenient.

[0006] In order to achieve the above-mentioned purpose of the invention, the present invention provides a CNC grinding machine for closed bearings to improve the above-mentioned problems.

[0007] The specific application is as follows:

[0008] A CNC grinding machine for closed bearings, comprising a CNC grinding machine, a control platform is fixedly suspended on the side of the CNC grinding machine, a perspective window is arranged on the front of the CNC grinding machine, a manipulator and a grinding wheel are arranged on the front and back of the inner cavity of the CNC grinding machine respectively, a blocking film is arranged between the grinding wheel and the manipulator, a grinding wheel dresser is arranged on the side of the grinding wheel, a clamping mechanism is slidably installed on the inner cavity of the CNC grinding machine, the clamping mechanism comprises a fixed disk, a rotating disk is rotatably installed in the middle of the fixed disk, and the surface of the rotating disk is an annular array A row is provided with four sliding grooves, a guide rod is slidably installed inside the sliding groove, a pressure plate is fixedly connected to the bottom of the guide rod, a clamping block is clamped on the top of the guide rod, a pressure plate is rotatably installed on the top of the clamping block, a rotating plate is rotatably installed on the middle of the pressure plate, an arc plate is hinged on the top of the rotating plate, a spring top rod is slidably installed on the front end of the pressure plate, a top block is fixedly connected to the inner end of the spring top rod, the top block is attached to the inclined surfaces of the arc plate and the rotating plate, and a stable detection mechanism is provided at the bottom of the pressure plate;

[0009] The stability detection mechanism includes an extrusion ring, which wraps the pressure plate inside. An electric cylinder is fixedly installed at the bottom of the rotating disk, and the output end of the electric cylinder is fixedly connected to the bottom of the extrusion ring.

[0010] As a preferred technical solution of the present application, a fixing frame is fixedly installed in the middle of the rotating disk, a firing pin is sleeved in the middle of the fixing frame, a guide cylinder is fixedly installed on the top of the extrusion ring, an extrusion spring is fixedly installed in the middle of the inner cavity of the guide cylinder, and the bottom of the firing pin is fixedly connected to the top of the extrusion spring.

[0011] As a preferred technical solution of the present application, a mounting groove is provided at the bottom of the clamping block, a driven gear is rotatably installed at the bottom of the inner cavity of the mounting groove, the top of the driven gear is fixedly connected to the bottom of the pressure plate through a rotating shaft, and a rotating ring is rotatably installed at the top of the rotating disk on the outside of the clamping block, and the rotating ring is meshed with the driven gear.

[0012] As a preferred technical solution of the present application, a rotating groove is provided on the top of the rotating disk, and a limiting slider is fixedly installed on the bottom of the clamping block. The limiting slider is slidably engaged on the top of the guide rod and rotatably engaged in the inside of the rotating groove.

[0013] As a preferred technical solution of the present application, a tilting mechanism is provided on the side of the pressure plate, and the tilting mechanism includes a first support spring, the bottom of the first support spring is fixedly connected to an iron block, the bottom of the iron block is fixedly connected to a second support spring, and the bottom of the second support spring is fixedly connected to the bottom of the inner cavity of the pressure plate.

[0014] As a preferred technical solution of the present application, the inner cavity of the clamping block is located at the bottom of the second supporting spring and a through electromagnet is vertically slidably installed. The bottom of the through electromagnet is fixedly connected to a limiting rod, and a return spring is sleeved on the middle part of the limiting rod. A positioning hole is opened on the surface of the driven gear, and the limiting rod is vertically located directly above the positioning hole and the two are adapted to each other.

[0015] As a preferred technical solution of the present application, the inner end of the rotating plate is movably hinged inside the pressure plate, the arc plate is movably hinged at the top of the rotating plate, the top of the first support spring is fixedly connected to the side of the arc plate, and the first support spring supports the side of the arc plate to keep the arc plate vertical.

[0016] As a preferred technical solution of the present application, a block is fixedly installed at the bottom of the fixed frame, and the four sides of the block at the bottom of the fixed frame are fixedly connected with retreat springs, and the other end of the retreat spring is fixedly connected to the inner end of the guide rod to support the guide rod outward.

[0017] As a preferred technical solution of the present application, after the electromagnet is energized and magnetized, the electromagnet moves downward to absorb the iron block downward, and the arc plate rotates and tilts to the side under the traction of the first supporting spring, and the four arc plates form the shape of fan blades. When the electromagnet moves vertically downward, the limit rod at the bottom of the electromagnet is vertically inserted into the positioning hole opened on the surface of the driven gear to fix the driven gear, and the driven gear is meshed with the rotating ring.

[0018] As a preferred technical solution of the present application, a second motor is fixedly installed on the side of the fixed disk, and the output end of the second motor is fixedly connected to the side of the rotating disk. A first motor is fixedly installed on the bottom of the rotating disk, and the output end of the first motor is fixedly connected to a gear, which is attached to the top of the rotating disk and meshes with the rotating ring.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In the scheme of this application:

[0021] 1. In order to solve the problem that the width and thickness of the workpiece cannot be adjusted when the workpiece is clamped, the present application cooperates with the clamping mechanism and the stability detection mechanism, and controls the movement of the extrusion ring through the electric cylinder, so that the clamping block can move and clamp the workpieces of different widths. At the same time, when the clamping blocks move relatively, the spring push rods at the ends of the pressure plates squeeze each other, so that workpieces of different thicknesses can be pressed. The elastic squeezing of the spring push rods causes the rotating plate at the bottom of the arc plate to move downward to press the bottom of the workpiece, thereby achieving the clamping of workpieces of different widths and thicknesses.

[0022] 2. In order to solve the problem that it is impossible to confirm whether the workpiece is clamped stably after the workpiece is clamped, the present application uses a stable detection mechanism and a clamping mechanism in combination. When the clamping block clamps the workpiece, the workpiece will be pressed by the arc plate at the top. At the same time, the striker at the bottom will hit the bottom of the workpiece during the lifting process of the extrusion ring. After the clamping is completed, if the clamping is unstable, the workpiece will detach from the surface of the clamping block, thereby automatically detecting whether the workpiece is clamped stably and avoiding unstable clamping of the workpiece.

[0023] 3. Through the cooperation of the tilting mechanism and the clamping mechanism, when the arc plate tilts to the side under the drive of the tilting mechanism, the driven gear will engage with the rotating ring. When the rotating ring rotates, the clamping block will rotate synchronously with the rotating ring and slide and rotate along the rotating slide. At this time, the four arc plates are tilted to form a fan blade to send air to the top. At this time, the clamping mechanism is moved to the bottom of the grinding wheel to accelerate the cooling speed of the grinding wheel, realize the rapid cooling of the grinding wheel, and solve the problem that the grinding wheel cannot be cooled quickly after long-term use.

[0024] 4. The second motor controls the rotating disk to flip so that the pressure plate faces downward. At this time, the first motor controls the rotating ring to rotate so that the pressure plate moves away from the top of the workpiece. The electric cylinder controls the stable detection mechanism to retract. At this time, the striker will hit the bottom of the workpiece, so that the workpiece can quickly detach from the middle of the clamping block, thereby realizing rapid automatic unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a CNC grinding machine for closed bearings provided in this application;

[0026] Figure 2 A schematic diagram of the internal structure of the side of the CNC grinding machine for the closed bearing provided in this application;

[0027] Figure 3 A schematic diagram of the clamping mechanism structure of a CNC grinder for a closed bearing provided in this application;

[0028] Figure 4 A schematic diagram of the internal structure of the clamping mechanism of the CNC grinder for the closed bearing provided in this application;

[0029] Figure 5 A schematic diagram of the exploded structure of the rotating disk of the clamping mechanism of the CNC grinder for the closed bearing provided in the present application;

[0030] Figure 6 A schematic diagram of the exploded structure of the clamping mechanism of the CNC grinder for the closed bearing provided in this application;

[0031] Figure 7A schematic diagram of the coordination structure of the clamping mechanism and the stabilization detection mechanism of the CNC grinder for the closed bearing provided in this application;

[0032] Figure 8 A schematic diagram of the decomposed structure of the tilting mechanism of the CNC grinder for the closed bearing provided in the present application;

[0033] Fig. 9 A partial cross-sectional view of a CNC grinding machine for closed bearings provided for this application.

[0034] Indicated in the figure:

[0035] 1. CNC grinding machine; 101. Control platform; 102. Perspective window; 103. Block film; 104. Grinding wheel; 105. Manipulator; 106. Grinding wheel dresser;

[0036] 2. Clamping mechanism; 201. Fixed disk; 202. Rotating disk; 203. Rotating ring; 204. Fixed frame; 205. Clamping block; 206. Pressing plate; 207. Gear; 208. Arc plate; 209. Rotating plate; 210. Ejector block; 211. Spring ejector rod; 212. Guide rod; 213. Pressure plate; 214. Limiting slider; 215. Rotating slide groove; 216. Sliding groove; 217. Electric cylinder; 218. First motor; 219. Second motor; 220. Mounting groove; 221. Retraction spring;

[0037] 3. Stable detection mechanism; 301. Extrusion ring; 302. Guide cylinder; 303. Extrusion spring; 304. Strike pin;

[0038] 4. Tilt mechanism; 401. First support spring; 402. Iron block; 403. Second support spring; 404. Electromagnet; 405. Limit rod; 406. Return spring; 407. Driven gear; 408. Positioning hole. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0040] As described in the background art, when clamping a workpiece, it is not possible to adjust according to the width and thickness of the workpiece.

[0041] In order to solve this technical problem, the present invention provides a CNC grinding machine for a closed bearing, which is applied to workpiece processing.

[0042] Specifically, please refer to Figure 1-9 , the CNC grinding machines for closed bearings specifically include:

[0043] A CNC grinder 1, a control platform 101 is fixedly suspended on the side of the CNC grinder 1, a perspective window 102 is provided on the front of the CNC grinder 1, a manipulator 105 and a grinding wheel 104 are provided on the front and back of the inner cavity of the CNC grinder 1 respectively, a blocking film 103 is provided between the grinding wheel 104 and the manipulator 105, a grinding wheel dresser 106 is provided on the side of the grinding wheel 104, a clamping mechanism 2 is slidably installed in the inner cavity of the CNC grinder 1, the clamping mechanism 2 includes a fixed disk 201, a rotating disk 202 is rotatably installed in the middle of the fixed disk 201, and four sliding grooves 216 are provided in an annular array on the surface of the rotating disk 202, and the sliding grooves A guide rod 212 is slidably installed inside 216, a pressure plate 213 is fixedly connected to the bottom of the guide rod 212, a clamping block 205 is clamped on the top of the guide rod 212, a pressure plate 206 is rotatably installed on the top of the clamping block 205, a rotating plate 209 is rotatably installed on the middle of the pressure plate 206, an arc plate 208 is hinged on the top of the rotating plate 209, a spring top rod 211 is slidably installed on the front end of the pressure plate 206, an inner end of the spring top rod 211 is fixedly connected to a top block 210, the top block 210 is attached to the inclined surfaces of the arc plate 208 and the rotating plate 209, and a stable detection mechanism 3 is provided at the bottom of the pressure plate 213;

[0044] The stability detection mechanism 3 includes an extrusion ring 301, which wraps the pressure plate 213 inside. An electric cylinder 217 is fixedly installed at the bottom of the rotating disk 202, and the output end of the electric cylinder 217 is fixedly connected to the bottom of the extrusion ring 301. A block is fixedly installed at the bottom of the fixed frame 204, and the four sides of the block at the bottom of the fixed frame 204 are fixedly connected to the retreat spring 221. The other end of the retreat spring 221 is fixedly connected to the inner end of the guide rod 212 to support the guide rod 212 outward.

[0045] First, the pressure plate 206 is directed outward and the workpiece is placed on the top of the clamping block 205. Then, the first motor 218 drives the gear 207 to pull the rotating ring 203 to rotate, so that the pressure plate 206 rotates inward. Then, the electric cylinder 217 controls the extrusion ring 301 to move upward, thereby moving the clamping block 205 toward the middle and clamping the workpiece. At this time, the arc plate 208 on the top of the pressure plate 206 is squeezed and rotated downward, so that the arc plate 208 and the rotating plate 209 fix the four corners of the top of the workpiece, thereby fixing the top and four sides of the workpiece, and under the elastic action of the spring push rod 211, the clamping thickness of the workpiece can be adaptively adjusted.

[0046] In order to solve the problem that the width and thickness of the workpiece cannot be adjusted when the workpiece is clamped, the CNC grinder for the closed bearing provided by the present invention cooperates with the stabilization detection mechanism 3 set up in the present application, and controls the movement of the extrusion ring 301 through the electric cylinder 217, so that the clamping block 205 can move and clamp the workpieces of different widths. At the same time, when the clamping block 205 moves relatively, the spring push rods 211 at the ends of the pressure plate 206 squeeze each other, so that workpieces of different thicknesses can be pressed. The elastic squeezing of the spring push rods 211 causes the rotating plate 209 at the bottom of the arc plate 208 to move downward to press the bottom of the workpiece, thereby achieving clamping of workpieces of different widths and thicknesses.

[0047] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0048] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0049] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0050] Example 1, please refer to Figure 3-7 A CNC grinding machine for a closed bearing, wherein the CNC grinding machine 1 has a control platform 101 fixedly suspended on the side of the CNC grinding machine 1, a perspective window 102 is provided on the front of the CNC grinding machine 1, a manipulator 105 and a grinding wheel 104 are provided on the front and back of the inner cavity of the CNC grinding machine 1, respectively, and a blocking film 103 is provided between the grinding wheel 104 and the manipulator 105 to separate them, a clamping mechanism 2 is slidably installed in the inner cavity of the CNC grinding machine 1, and the clamping mechanism 2 includes a fixed disk 201, a rotating disk 202 is rotatably installed in the middle of the fixed disk 201, and four sliding grooves 216 are provided in an annular array on the surface of the rotating disk 202, and the sliding grooves 21 6 is slidably installed with a guide rod 212 inside, the bottom of the guide rod 212 is fixedly connected with a pressure plate 213, the top of the guide rod 212 is clamped with a clamping block 205, the top of the clamping block 205 is rotatably installed with a pressure plate 206, the middle of the pressure plate 206 is rotatably installed with a rotating plate 209, the top of the rotating plate 209 is hinged with an arc plate 208, the front end of the pressure plate 206 is slidably installed with a spring top rod 211, the inner end of the spring top rod 211 is fixedly connected with a top block 210, the top block 210 is attached to the inclined surfaces of the arc plate 208 and the rotating plate 209, and the bottom of the pressure plate 213 is provided with a stable detection mechanism 3;

[0051] The stable detection mechanism 3 includes an extrusion ring 301, which wraps the pressure plate 213 inside. An electric cylinder 217 is fixedly installed at the bottom of the rotating disk 202, and the output end of the electric cylinder 217 is fixedly connected to the bottom of the extrusion ring 301. A block is fixedly installed at the bottom of the fixed frame 204, and the four sides of the block at the bottom of the fixed frame 204 are fixedly connected to the retreat spring 221. The other end of the retreat spring 221 is fixedly connected to the inner end of the guide rod 212 to support the guide rod 212 outward. The middle part of the rotating disk 202 is fixedly installed with the fixed frame 204, and the middle part of the fixed frame 204 is sleeved with a striker 304. The top of the extrusion ring 301 is fixedly installed with a guide cylinder 302, and the middle part of the inner cavity of the guide cylinder 302 is fixedly installed with an extrusion spring 303, and the bottom of the striker 304 is fixedly connected to the top of the extrusion spring 303.

[0052] After the workpiece is clamped, the striker 304 at the bottom of the fixed frame 204 supports the bottom of the workpiece and pushes the workpiece upward. When the workpiece is clamped unstable, the workpiece will detach from the top of the clamping block 205, so as to confirm whether the workpiece is clamped stably. Then, the workpiece is processed by the grinding wheel 104. After the processing is completed, the rotating disk 202 is controlled by the second motor 219 to flip so that the top of the rotating disk 202 faces downward, and then the rotating ring 203 is rotated to make the rotating plate 209 move away from the top of the workpiece. At this time, the electric cylinder 217 at the bottom of the workpiece controls the extrusion ring 301 to move upward, and the clamping block 205 loses its clamping effect on the workpiece. The striker 304, under the elastic support of the extrusion spring 303, quickly pops the workpiece outward, thereby realizing rapid unloading of the workpiece.

[0053] In order to solve the problem that it is impossible to confirm whether the workpiece is clamped stably after the workpiece is clamped, the present application uses a stable detection mechanism 3 in conjunction with the clamping mechanism 2. When the clamping block 205 completes the clamping of the workpiece, the workpiece will be pressed by the top arc plate 208. At the same time, the bottom striker 304 will hit the bottom of the workpiece during the lifting process of the extrusion ring 301. After the clamping is completed, if the clamping is unstable, the workpiece will detach from the surface of the clamping block 205, thereby realizing automatic detection of whether the workpiece is clamped stably and avoiding unstable clamping of the workpiece.

[0054] Embodiment 2, the CNC grinding machine for the closed bearing provided in embodiment 1 is further optimized, specifically, as follows Figure 6-9As shown, a mounting groove 220 is provided at the bottom of the clamping block 205, and a driven gear 407 is rotatably installed at the bottom of the inner cavity of the mounting groove 220. The top of the driven gear 407 is fixedly connected to the bottom of the pressure plate 206 through a rotating shaft. The top of the rotating disk 202 is located on the outer side of the clamping block 205 and is rotatably installed with a rotating ring 203. The rotating ring 203 and the driven gear 407 are meshed with each other. A rotating groove 215 is provided on the top of the rotating disk 202. A limit slider 214 is fixedly installed at the bottom of the clamping block 205. The limit slider 214 is slidably engaged with the top of the guide rod 212 and rotatably engaged with the inside of the rotating groove 215. The fixed disk A second motor 219 is fixedly installed on the side of 201, and the output end of the second motor 219 is fixedly connected to the side of the rotating disk 202. A first motor 218 is fixedly installed on the bottom of the rotating disk 202, and a gear 207 is fixedly connected to the output end of the first motor 218. The gear 207 is attached to the top of the rotating disk 202 and meshes with the rotating ring 203. A tilting mechanism 4 is provided on the side of the pressure plate 206, and the tilting mechanism 4 includes a first supporting spring 401, and the bottom of the first supporting spring 401 is fixedly connected to an iron block 402, and the bottom of the iron block 402 is fixedly connected to a second supporting spring 403. The bottom is fixedly connected to the bottom of the inner cavity of the pressure plate 206, the inner cavity of the clamping block 205 is located at the bottom of the second supporting spring 403 and is vertically slidably installed with an electromagnet 404, the bottom of the electromagnet 404 is fixedly connected with a limiting rod 405, the middle part of the limiting rod 405 is sleeved with a reset spring 406, a positioning hole 408 is opened on the surface of the driven gear 407, the limiting rod 405 is vertically located directly above the positioning hole 408 and the two are adapted, the inner end of the rotating plate 209 is movably hinged to the inside of the pressure plate 206, the arc plate 208 is movably hinged to the top of the rotating plate 209, and the top of the first supporting spring 401 is fixedly connected to the arc On the side of the plate 208, the first support spring 401 supports the side of the arc plate 208 to keep the arc plate 208 vertical. After the electromagnet 404 is energized and magnetically conductive, the electromagnet 404 moves downward to absorb the iron block 402 downward. The arc plate 208 rotates and tilts to the side under the traction of the first support spring 401. The four arc plates 208 form the shape of fan blades. When the electromagnet 404 moves vertically downward, the limit rod 405 at the bottom of the electromagnet 404 is vertically inserted into the positioning hole 408 opened on the surface of the driven gear 407 to fix the driven gear 407. The driven gear 407 is meshed with the rotating ring 203.

[0055] After the grinding wheel 104 has completed multiple processings, although there is always water flow to cool it down, the long-term processing will still increase the temperature of the grinding wheel 104. At this time, the electromagnet 404 is energized to conduct magnetism, and the arc plate 208 is controlled to tilt to the side, and the four arc plates 208 form a fan shape. At this time, the driven gear 407 at the bottom of the clamping block 205 is engaged with the inner side of the rotating ring 203, and the first motor 218 drives the rotating ring 203 to rotate again, which will cause the rotating ring 203 to rotate with the four clamping blocks 205 inside the rotating slide 215, and then the air can be sent upward through the arc plate 208, thereby accelerating the cooling speed of the grinding wheel 104;

[0056] By cooperating with the tilting mechanism 4 and the clamping mechanism 2, when the arc plate 208 tilts to the side under the drive of the tilting mechanism 4, the driven gear 407 will engage with the rotating ring 203. When the rotating ring 203 rotates, the clamping block 205 will rotate synchronously with the rotating ring 203 and slide and rotate along the rotating slide groove 215. At this time, the four arc plates 208 are tilted to form fan blades to jointly supply air to the top. At this time, the clamping mechanism 2 is moved to the bottom of the grinding wheel 104 to accelerate the cooling speed of the grinding wheel 104, thereby achieving rapid cooling of the grinding wheel 104 and solving the problem that the grinding wheel 104 cannot be cooled quickly after long-term use.

[0057] The use process of the CNC grinding machine for the closed bearing provided by the present invention is as follows:

[0058] The clamping mechanism 2 cooperates with the stable detection mechanism 3, and the extrusion ring 301 is controlled to move by the electric cylinder 217, so that the clamping block 205 can move and clamp workpieces of different widths. At the same time, when the clamping block 205 moves relatively, the spring push rods 211 at the ends of the pressing plate 206 squeeze each other, so that workpieces of different thicknesses can be pressed. The elastic squeezing of the spring push rods 211 causes the rotating plate 209 at the bottom of the arc plate 208 to move downward to press the bottom of the workpiece, thereby achieving the clamping of workpieces of different widths and thicknesses. First, the pressing plate 206 is directed outward, and the workpiece is placed To the top of the clamping block 205, and then the first motor 218 drives the gear 207 to pull the rotating ring 203 to rotate, so that the pressure plate 206 rotates inward, and then the electric cylinder 217 controls the extrusion ring 301 to move upward, so that the clamping block 205 moves toward the middle and clamps the workpiece. At this time, the arc plate 208 on the top of the pressure plate 206 is squeezed and rotates downward, so that the arc plate 208 and the rotating plate 209 fix the four corners of the top of the workpiece, thereby achieving the fixation of the top and four sides of the workpiece, and under the elastic action of the spring push rod 211, the clamping thickness of the workpiece can be adaptively adjusted;

[0059] By cooperating with the provided stability detection mechanism 3 and the clamping mechanism 2, when the clamping block 205 completes clamping of the workpiece, the workpiece will be pressed by the top arc plate 208, and at the same time, the bottom striker 304 will hit the bottom of the workpiece during the lifting process of the extrusion ring 301. After the clamping is completed, if the clamping is unstable, the workpiece will detach from the surface of the clamping block 205, thereby automatically detecting whether the workpiece is clamped stably to avoid unstable clamping of the workpiece. After the workpiece is clamped, the striker 304 at the bottom of the fixed frame 204 is supported on the bottom of the workpiece to hold the workpiece upward. When the workpiece is clamped unstably The workpiece will be separated from the top of the clamping block 205 at a certain time, so that it can be confirmed whether the workpiece is clamped stably. Then, the workpiece is processed by the grinding wheel 104. After the processing is completed, the second motor 219 controls the rotating disk 202 to flip so that the top of the rotating disk 202 faces downward, and then the rotating ring 203 is rotated to make the rotating plate 209 move away from the top of the workpiece. At this time, the electric cylinder 217 at the bottom of the workpiece controls the extrusion ring 301 to move up, and the clamping block 205 loses its clamping effect on the workpiece. The striker 304, under the elastic support of the extrusion spring 303, quickly ejects the workpiece to the outside, thereby realizing the rapid unloading of the workpiece.

[0060] By cooperating with the tilting mechanism 4 and the clamping mechanism 2, when the arc plate 208 is tilted to the side under the drive of the tilting mechanism 4, the driven gear 407 will engage with the rotating ring 203. When the rotating ring 203 rotates, the clamping block 205 will rotate synchronously with the rotating ring 203 and slide and rotate along the rotating slide groove 215. At this time, the four arc plates 208 are tilted to form a fan blade to jointly supply air to the top. At this time, the clamping mechanism 2 is moved to the bottom of the grinding wheel 104 to accelerate the cooling speed of the grinding wheel 104, thereby realizing the rapid cooling of the grinding wheel 104 and solving the problem that the grinding wheel 104 cannot be cooled quickly after long-term use. After the grinding wheel 104 has completed multiple processings, although there is water flow to cool it down, the long-term processing will still increase the temperature of the grinding wheel 104. At this time, the electromagnet 404 is energized and magnetically conductive to control the arc plate 208 to tilt to the side, and the four arc plates 208 form a fan shape. At this time, the driven gear 407 at the bottom of the clamping block 205 is engaged with the inner side of the rotating ring 203, and the first motor 218 drives the rotating ring 203 to rotate again, which will cause the rotating ring 203 to rotate with the four clamping blocks 205 inside the rotating slot 215, and then the air can be sent upward through the arc plate 208, thereby accelerating the cooling speed of the grinding wheel 104.

[0061] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A CNC grinding machine for closed bearings, comprising a CNC grinding machine (1), a control platform (101) is fixedly suspended on the side of the CNC grinding machine (1), a perspective window (102) is provided on the front of the CNC grinding machine (1), a manipulator (105) and a grinding wheel (104) are provided on the front and back of the inner cavity of the CNC grinding machine (1), a blocking film (103) is provided between the grinding wheel (104) and the manipulator (105), and a grinding wheel dresser (106) is provided on the side of the grinding wheel (104), characterized in that: The inner cavity of the numerically controlled grinding machine (1) is slidably mounted with a clamping mechanism (2), the clamping mechanism (2) comprising a fixed disk (201), a rotating disk (202) being rotatably mounted in the middle of the fixed disk (201), four sliding grooves (216) being provided in an annular array on the surface of the rotating disk (202), a guide rod (212) being slidably mounted inside the sliding groove (216), a pressure plate (213) being fixedly connected to the bottom of the guide rod (212), a clamping block (205) being clamped on the top of the guide rod (212), and the clamping A pressure plate (206) is rotatably mounted on the top of the block (205); a rotating plate (209) is rotatably mounted on the middle of the pressure plate (206); an arc plate (208) is hingedly mounted on the top of the rotating plate (209); a spring top rod (211) is slidably mounted on the front end of the pressure plate (206); a top block (210) is fixedly connected to the inner end of the spring top rod (211); the top block (210) is attached to the inclined surfaces of the arc plate (208) and the rotating plate (209); and a stable detection mechanism (3) is provided at the bottom of the pressure plate (213); The stability detection mechanism (3) comprises an extrusion ring (301), the extrusion ring (301) wraps the pressure plate (213) inside, an electric cylinder (217) is fixedly mounted on the bottom of the rotating disk (202), and an output end of the electric cylinder (217) is fixedly connected to the bottom of the extrusion ring (301).

2. A CNC grinding machine for closed bearings according to claim 1, characterized in that: A fixing frame (204) is fixedly installed in the middle of the rotating disk (202), a striker (304) is sleeved in the middle of the fixing frame (204), a guide cylinder (302) is fixedly installed on the top of the extrusion ring (301), an extrusion spring (303) is fixedly installed in the middle of the inner cavity of the guide cylinder (302), and the bottom of the striker (304) is fixedly connected to the top of the extrusion spring (303).

3. A CNC grinding machine for closed bearings according to claim 1, characterized in that: A mounting groove (220) is provided at the bottom of the clamping block (205), and a driven gear (407) is rotatably mounted at the bottom of the inner cavity of the mounting groove (220). The top of the driven gear (407) is fixedly connected to the bottom of the pressure plate (206) via a rotating shaft. The top of the rotating disk (202) is located on the outer side of the clamping block (205) and is rotatably mounted with a rotating ring (203). The rotating ring (203) and the driven gear (407) are meshed with each other.

4. A CNC grinding machine for a closed bearing according to claim 2, characterized in that: A rotating slide groove (215) is provided on the top of the rotating disk (202), and a limiting slider (214) is fixedly installed on the bottom of the clamping block (205). The limiting slider (214) is slidably engaged with the top of the guide rod (212) and is rotatably engaged with the inside of the rotating slide groove (215).

5. The CNC grinding machine for closed bearings according to claim 1, characterized in that: A tilting mechanism (4) is provided on the side of the pressing plate (206), and the tilting mechanism (4) includes a first supporting spring (401), the bottom of the first supporting spring (401) is fixedly connected to an iron block (402), the bottom of the iron block (402) is fixedly connected to a second supporting spring (403), and the bottom of the second supporting spring (403) is fixedly connected to the bottom of the inner cavity of the pressing plate (206).

6. A CNC grinding machine for closed bearings according to claim 5, characterized in that: The inner cavity of the clamping block (205) is located at the bottom of the second supporting spring (403) and is vertically slidably installed with an electromagnet (404). The bottom of the electromagnet (404) is fixedly connected to a limiting rod (405). The middle part of the limiting rod (405) is sleeved with a return spring (406). A positioning hole (408) is opened on the surface of the driven gear (407). The limiting rod (405) is vertically located directly above the positioning hole (408) and the two are adapted to each other.

7. A CNC grinding machine for a closed bearing according to claim 5, characterized in that: The inner end of the rotating plate (209) is movably hinged inside the pressure plate (206), and the arc plate (208) is movably hinged at the top of the rotating plate (209). The top of the first support spring (401) is fixedly connected to the side of the arc plate (208), and the first support spring (401) supports the side of the arc plate (208) to keep the arc plate (208) vertical.

8. The CNC grinding machine for closed bearings according to claim 2, characterized in that: A block is fixedly mounted at the bottom of the fixing frame (204), and four sides of the block at the bottom of the fixing frame (204) are fixedly connected to retreat springs (221), and the other end of the retreat spring (221) is fixedly connected to the inner end of the guide rod (212) to support the guide rod (212) outward.

9. A CNC grinding machine for a closed bearing according to claim 6, characterized in that: After the electromagnet (404) is energized and magnetized, it moves downward to absorb the iron block (402) downward, and the arc plate (208) rotates and tilts to the side under the traction of the first support spring (401), and the four arc plates (208) form a fan blade shape. When the electromagnet (404) moves vertically downward, the limit rod (405) at the bottom of the electromagnet (404) is vertically inserted into the positioning hole (408) opened on the surface of the driven gear (407) to fix the driven gear (407), and the driven gear (407) is meshed with the rotating ring (203).

10. The CNC grinding machine for closed bearings according to claim 1, characterized in that: A second motor (219) is fixedly mounted on the side of the fixed disk (201), and an output end of the second motor (219) is fixedly connected to the side of the rotating disk (202). A first motor (218) is fixedly mounted on the bottom of the rotating disk (202), and an output end of the first motor (218) is fixedly connected to a gear (207), and the gear (207) is attached to the top of the rotating disk (202) and meshes with the rotating ring (203).

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