A high-efficiency CNC centerless grinder and its use method

Abstract

The present invention belongs to the technical field of centerless grinders, and specifically relates to a high-efficiency CNC centerless grinder and a method for using the same, comprising a grinder body, a grinding assembly and an adjustment assembly mounted on the grinder body, a feed assembly mounted on the grinder body, a workpiece to be ground placed on the feed assembly, a support dust removal assembly mounted between the grinding assembly and the adjustment assembly, and a limit assembly mounted on top of the grinding assembly and the adjustment assembly. In the present invention, support side plates and a support chassis on both sides of the top of the support box support the bottom of the workpiece to be ground. When the grinding wheel grinds the workpiece, the workpiece is highly stable. Even if the radial dimensions of the workpiece are different, the workpiece can still be supported by adjusting the adjustment roller assembly, thereby reducing the space for the workpiece to move on the support dust removal assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of centerless grinders, and in particular relates to a high-efficiency CNC centerless grinder and a method for using the same. Background Art

[0002] A centerless grinder grinds workpieces without requiring the workpiece's axis to be positioned. It consists of three main components: a grinding wheel, a regulating wheel, and a support plate. The grinding wheel is the primary cutting tool in a centerless grinder, used to remove material from the workpiece surface. The grinding wheel's diameter is typically larger than that of the regulating wheel. The regulating wheel, also known as the drive wheel or feed wheel, controls the workpiece's speed, preventing it from accelerating and ensuring it rotates at the same speed as the grinding wheel. The support plate supports the workpiece in the centerless grinder.

[0003] When a centerless grinder is in use, the workpiece is placed on a support plate between the grinding wheel and the guide wheel. The grinding wheel begins to rotate at high speed to grind, while the guide wheel rotates in the same direction at a slower speed, driving the workpiece and providing a circular feed. When a centerless grinder processes workpieces with varying shaft diameters, the workpiece can easily vibrate during the grinding process. This is because workpieces of varying diameters experience varying rigidity and stability under the action of the grinding forces. This is especially true for slender workpieces, as the workpiece's wider range of motion on the support plate makes it more susceptible to vibration and bending, which can affect machining accuracy and surface quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency CNC centerless grinder and a method of using the same in order to solve the technical problems in the prior art.

[0005] The object of the present invention can be achieved by the following technical solution: a high-efficiency CNC centerless grinder, which includes a grinder body and a grinding assembly and an adjustment assembly installed on the grinder body, a feeding assembly installed on the grinder body, a grinding workpiece placed on the feeding assembly, a support dust removal assembly installed between the grinding assembly and the adjustment assembly, and a limit assembly installed on the top of the grinding assembly and the adjustment assembly;

[0006] The limiting assembly includes a fixed plate and an adjustable adjustment rod installed on the fixed plate, the adjustment rod is connected to the adjustment plate, a bottom roller is installed at the bottom of the adjustment plate, and the bottom roller is arranged on the top of the grinding workpiece;

[0007] The supporting dust removal assembly includes a supporting box, an active roller is installed in the supporting box, the active roller is driven by a transmission assembly, driven assemblies are respectively installed on both sides of the top of the supporting box, an adjusting roller assembly that can be vertically adjusted and fixed is installed between the driven assemblies, belts are installed on the active roller, the driven assembly and the adjusting roller assembly, the mesh on the belt is a diamond mesh, a dust collecting assembly is installed inside the supporting box, and the dust collecting assembly is installed inside the belt.

[0008] As a further optimization or improvement of this solution, the feeding assembly includes a bracket, in which a feeding belt for conveying the polished workpiece is installed, and the feeding belt is directly opposite between the polishing assembly and the adjustment assembly.

[0009] As a further optimization or improvement of this solution, the grinding assembly includes a grinding box and a grinding wheel installed inside the grinding box, the adjustment assembly includes a control box and an adjusting wheel installed inside the control box, the support box is located between the grinding wheel and the adjusting wheel, and the grinding workpiece on the support box contacts the grinding wheel and the adjusting wheel respectively.

[0010] As a further optimization or improvement of this solution, an adjusting head is installed on the top of the limiting assembly, the adjusting head is connected to the adjusting rod, and there is a distance between the bottom roller and the top of the grinding workpiece.

[0011] As a further optimization or improvement of this solution, a vertical slot is provided on the support box, the adjusting roller assembly is slidably installed in the vertical slot, and the adjusting roller assembly is connected to the side wall of the vertical slot via a return spring.

[0012] As a further optimization or improvement of this solution, the transmission assembly includes a protective shell and a motor and a negative pressure machine installed inside the protective shell. The negative pressure machine is connected to the dust collection assembly, the motor is coaxially connected to the active roller, and a heat dissipation port is opened at the bottom of the protective shell.

[0013] As a further optimization or improvement of this solution, the driven assembly includes a supporting side disc and a driven roller, which are coaxially connected to each other. The adjusting roller assembly includes a supporting chassis and a convex roller, which are coaxially connected to each other. The supporting side disc and the supporting chassis are in contact with the polishing workpiece, and the belt is installed on the driven roller and the convex roller.

[0014] As a further optimization or improvement of this solution, an adjusting shaft is rotatably installed on the support chassis, and the adjusting shaft is connected to the baffle through a connecting rod. The dust collecting assembly includes a negative pressure chamber and a dust collecting plate installed on the top of the negative pressure chamber. A dust suction port is opened on the negative pressure chamber, the negative pressure machine is connected to the negative pressure chamber, the baffle is slidably installed on the top of the negative pressure chamber, and the baffle covers the dust suction port.

[0015] A method for using a high-efficiency CNC centerless grinder, the method being applied to the high-efficiency CNC centerless grinder as described above, the method comprising the following steps:

[0016] Step S1: Place the workpieces to be polished on the feeding belt in sequence, start the feeding belt, and the feeding belt conveys the workpieces to between the grinding wheel and the regulating wheel in sequence;

[0017] Step S2: When the workpiece to be ground enters between the grinding wheel and the adjusting wheel, the workpiece to be ground first contacts the supporting side plates at both ends of the top of the supporting box. The position of the adjusting rod and the adjusting plate is adjusted by the adjusting head so that the bottom roller at the bottom of the adjusting plate presses down the workpiece to enable the bottom of the workpiece to contact the supporting side plates and the supporting bottom plate respectively, and then the position of the adjusting roller assembly is fixed.

[0018] Step S3: Use the adjusting head to adjust the adjusting plate upwards so that there is a distance between the top of the grinding workpiece and the bottom roller;

[0019] Step S4: Start the grinding assembly and the adjusting assembly. The grinding assembly grinds the workpiece. The adjusting assembly drives the workpiece to rotate and feed. Then, the driving roller is driven to rotate through the transmission assembly. The driving roller drives the driven assembly to rotate through the belt to provide rotation assistance for the workpiece. Therefore, the rotation speed of the adjusting wheel can be appropriately reduced to reduce the friction between the adjusting wheel and the workpiece.

[0020] As a further optimization or improvement of this solution, step S4 specifically includes the following steps:

[0021] Step S41: During the grinding process of the workpiece, the grinding waste will fall onto the belt, and then the waste can fall into the dust collecting plate through the diamond mesh on the belt;

[0022] Step S42: During the grinding process of the workpiece, the negative pressure chamber is connected to the negative pressure machine. By starting the negative pressure machine, negative pressure is generated in the negative pressure chamber. The negative pressure chamber first sucks the waste from the dust collecting plate into the negative pressure chamber through the suction port, and then the negative pressure absorbs the waste on the workpiece through the mesh on the belt;

[0023] Step S43: During the grinding process, the workpiece rotates to drive the supporting chassis and the convex roller to rotate synchronously. The rotation of the convex roller can adjust the belt tension of the local roller assembly so that the size of the diamond-shaped opening on the belt can be intermittently adjusted to prevent the grinding waste from clogging the through holes on the belt.

[0024] Beneficial effects of the present invention:

[0025] (1) The supporting side plates on both sides of the top of the support box and the supporting bottom plate between the supporting side plates in the present invention can support the bottom of the workpiece to be polished. When the grinding wheel polishes the workpiece, the stability of the workpiece to be polished is high. Even under the premise that the radial dimensions of the workpiece to be polished are different, the workpiece to be polished can still be supported by adjusting the adjusting roller assembly, thereby reducing the movable space of the workpiece to be polished on the supporting dust removal assembly. Compared with the blade support of the prior art, the present invention can provide extremely high stability for the workpiece to be polished. At the same time, the active roller is driven by the belt to rotate with the motor, and the active roller drives the driven assembly to rotate, thereby providing rotation assistance for the workpiece to be polished. Therefore, the rotation speed of the adjusting wheel can be appropriately reduced, thereby reducing the friction between the adjusting wheel and the workpiece to be polished, and further reducing the vibration between the adjusting wheel and the workpiece to be polished.

[0026] (2) The present invention forms a V-shape by passing the belt through the top of the driven component and the bottom of the adjusting roller component respectively. When the driven component and the adjusting roller component support the bottom of the polishing workpiece, a blanking cavity is formed between the polishing workpiece and the belt, and the polished waste will fall on the belt. Since there is a blanking cavity between the belt and the polishing workpiece, when the adjusting wheel drives the polishing workpiece to rotate, the polishing workpiece will not come into contact with the waste, thereby avoiding friction between the waste and the polishing workpiece, ensuring the quality of the polishing workpiece, and at the same time, the waste can fall into the dust collecting plate through the diamond mesh holes on the belt.

[0027] (3) The present invention installs a convex roller on the supporting chassis, and the grinding workpiece rotates to drive the supporting chassis and the convex roller to rotate synchronously. The rotation of the convex roller can adjust the belt tension of the local roller assembly, so that the size of the diamond-shaped opening on the belt can be intermittently adjusted, thereby avoiding the phenomenon of grinding waste clogging the through holes on the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 It is a front view of the overall structure of the present invention.

[0031] Figure 3 It is a schematic diagram of the limit component structure.

[0032] Figure 4 This is a diagram of the coordination between the grinding workpiece and the supporting dust removal component structure.

[0033] Figure 5 for Figure 4 A magnified view of the structure of part A.

[0034] Figure 6 This is a cross-sectional view of the support box structure.

[0035] Figure 7 Schematic diagram of the internal structure of the support box.

[0036] Figure 8 This is an enlarged view of the internal structure of the support box.

[0037] Figure 9 Schematic diagram of the connection structure between the supporting side disc and the driven roller.

[0038] Figure 10 This is a diagram of the coordination between the dust collection assembly and the adjustment roller assembly.

[0039] Figure 11 It is a schematic diagram of the structure of the dust collecting component and the adjusting roller component.

[0040] Figure 12 It is a schematic diagram of the transmission component structure.

[0041] Figure 13 Schematic diagram of the internal structure of the transmission component.

[0042] The following are marked in the figure: 1. Grinding machine body; 2. Grinding assembly; 201. Grinding box; 202. Grinding wheel; 3. Adjustment assembly; 301. Control box; 302. Adjustment wheel; 4. Limit assembly; 401. Fixing plate; 402. Adjustment head; 403. Adjustment rod; 404. Adjustment plate; 405. Bottom roller; 5. Feeding assembly; 501. Bracket; 502. Feeding belt; 6. Support and dust removal assembly; 601. Support box; 602. Transmission assembly; 6021. Protective shell; 6022. Heat dissipation vent. 6023, negative pressure machine; 6024, motor; 603, active roller; 604, driven assembly; 6041, supporting side plate; 6042, driven roller; 605, adjusting roller assembly; 6051, supporting chassis; 6052, convex roller; 6053, adjusting shaft; 6054, connecting rod; 6055, baffle; 606, belt; 607, dust collection assembly; 6071, dust collection plate; 6072, negative pressure chamber; 6073, dust suction port; 608, vertical slot; 609, return spring; 7. Grinding workpiece. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0044] See also Figures 1-10A high-efficiency CNC centerless grinder includes a grinder body 1 and a grinding assembly 2 and an adjusting assembly 3 mounted on the grinder body 1. A feeding assembly 5 is mounted on the grinder body 1, and a grinding workpiece 7 is placed on the feeding assembly 5. A supporting dust removal assembly 6 is installed between the grinding assembly 2 and the adjusting assembly 3. A limiting assembly 4 is installed on the top of the grinding assembly 2 and the adjusting assembly 3; the limiting assembly 4 includes a fixed plate 401 and an adjustable adjusting rod 403 mounted on the fixed plate 401. The adjusting rod 403 is connected to the adjusting plate 404. A bottom roller 405 is installed at the bottom of the adjusting plate 404. The bottom roller 405 is located at the grinding It is arranged on the top of the grinding workpiece 7; the supporting dust removal component 6 includes a supporting box 601, an active roller 603 is installed in the supporting box 601, the active roller 603 is driven by the transmission component 602, and driven components 604 are respectively installed on both sides of the top of the supporting box 601, and a vertically adjustable and fixed adjusting roller component 605 is installed between the driven components 604. A belt 606 is installed on the active roller 603, the driven component 604 and the adjusting roller component 605, and the mesh on the belt 606 is a diamond mesh. A dust collecting component 607 is installed inside the supporting box 601, and the dust collecting component 607 is installed inside the belt 606.

[0045] Specifically, the feeding assembly 5 includes a bracket 501 , in which a feeding belt 502 for conveying the polished workpiece 7 is installed. The feeding belt 502 is located between the polishing assembly 2 and the adjusting assembly 3 .

[0046] Specifically, an adjusting head 402 is installed on the top of the limiting component 4 , the adjusting head 402 is connected to the adjusting rod 403 , and there is a distance between the bottom roller 405 and the top of the grinding workpiece 7 .

[0047] Specifically, the grinding assembly 2 includes a grinding box 201 and a grinding wheel 202 installed inside the grinding box 201, the adjusting assembly 3 includes a control box 301 and an adjusting wheel 302 installed inside the control box 301, the support box 601 is located between the grinding wheel 202 and the adjusting wheel 302, and the grinding workpiece 7 on the support box 601 is in contact with the grinding wheel 202 and the adjusting wheel 302 respectively.

[0048] It should be noted that the belt 606 is mainly made of rubber material, so that the belt 606 has a certain elasticity. Figure 7 and Figure 8 The size of the active roller 603 can be adjusted to ensure a transmission wrap angle of no less than 120°. The grinding wheel 202 in the grinding assembly 2 and the adjusting wheel 302 in the adjusting assembly 3 of the present invention are both numerically controlled for spacing, ensuring precise adjustment of the grinding wheel 202 and adjusting wheel 302. During the grinding process, a gap is maintained between the bottom roller 405 and the top of the workpiece 7, preventing direct contact between the bottom roller 405 and the workpiece 7 and hindering its rotation.

[0049] When in use, the workpieces 7 to be polished are placed on the feeding belt 502 in sequence, and the feeding belt 502 is started. The feeding belt 502 conveys the workpieces to be polished between the grinding wheel 202 and the regulating wheel 302 in sequence.

[0050] After the workpiece 7 enters between the grinding wheel 202 and the adjusting wheel 302, it first contacts the supporting side plates 6041 at both ends of the top of the support box 601. The adjusting head 402 adjusts the position of the adjusting rod 403 and the adjusting plate 404, causing the bottom roller 405 at the bottom of the adjusting plate 404 to press down on the workpiece 7, so that the bottom of the workpiece 7 can contact the supporting side plates 6041 and the supporting bottom plate 6051 respectively. The position of the adjusting roller assembly 605 is then fixed, and the adjusting head 402 adjusts the adjusting plate 404 upward to create a gap between the top of the workpiece 7 and the bottom roller 405. The bottom roller 405 is used to limit the up and down vibration of the workpiece 7 during the grinding process, thereby limiting the movement of the workpiece 7 in the height direction.

[0051] In the present invention, the supporting side plates 6041 on both sides of the top of the support box 601 and the supporting chassis 6051 between the supporting side plates 6041 can support the bottom of the grinding workpiece 7. When the grinding wheel 202 grinds the grinding workpiece 7, the grinding workpiece 7 has high stability. Even under the premise that the radial dimensions of the grinding workpiece 7 are different, the grinding workpiece 7 can still be supported by adjusting the adjustment roller assembly 605, thereby reducing the activity space of the grinding workpiece 7 on the supporting dust removal assembly 6. Compared with the blade support of the prior art, the present invention can provide extremely high stability for the polished workpiece 7. At the same time, it cooperates with the motor 6024 to drive the active roller 603 to rotate, and the active roller 603 drives the driven component 604 to rotate through the belt 606, providing rotation assistance for the polished workpiece 7. Therefore, the rotation speed of the adjusting wheel 302 can be appropriately reduced, the friction between the adjusting wheel 302 and the polished workpiece 7 can be reduced, and the vibration between the adjusting wheel 302 and the polished workpiece 7 can be further reduced (it should be noted that if the friction between the adjusting wheel 302 and the polished workpiece 7 is too large, the grinding resistance will increase, making it difficult for the workpiece to maintain a stable rotation state, thereby generating vibration).

[0052] See also Figure 4-Figure 5 The support box 601 is provided with a vertical slot 608 , and the adjusting roller assembly 605 is slidably installed in the vertical slot 608 . The adjusting roller assembly 605 is connected to the side wall of the vertical slot 608 through a return spring 609 .

[0053] It should be noted that the adjusting roller assembly 605 slides vertically through the vertical slot 608 , and a screw is installed at one end of the adjusting roller assembly 605 extending out of the support box 601 , and the adjusting roller assembly 605 is fixed by the cooperation of the screw and the nut.

[0054] See also Figure 3-Figure 13The transmission assembly 602 includes a protective shell 6021 and a motor 6024 and a negative pressure machine 6023 installed inside the protective shell 6021. The negative pressure machine 6023 is connected to the dust collecting assembly 607. The motor 6024 is coaxially connected to the active roller 603. A heat dissipation port 6022 is opened at the bottom of the protective shell 6021.

[0055] Specifically, the driven assembly 604 includes a supporting side plate 6041 and a driven roller 6042, and the supporting side plate 6041 and the driven roller 6042 are coaxially connected. The adjusting roller assembly 605 includes a supporting chassis 6051 and a convex roller 6052, and the supporting chassis 6051 and the convex roller 6052 are coaxially connected. The supporting side plate 6041 and the supporting chassis 6051 are in contact with the polishing workpiece 7, and the belt 606 is installed on the driven roller 6042 and the convex roller 6052.

[0056] Specifically, the adjusting shaft 6053 is rotatably installed on the supporting chassis 6051, and the adjusting shaft 6053 is connected to the baffle 6055 through the connecting rod 6054. The dust collecting assembly 607 includes a negative pressure chamber 6072 and a dust collecting plate 6071 installed on the top of the negative pressure chamber 6072. A dust suction port 6073 is provided on the negative pressure chamber 6072. The negative pressure machine 6023 is connected to the negative pressure chamber 6072. The baffle 6055 is slidably installed on the top of the negative pressure chamber 6072, and the baffle 6055 covers the dust suction port 6073.

[0057] It should be noted that the supporting side plates 6041 and the supporting bottom plates 6051 can be arranged into multiple groups to ensure the grinding efficiency of workpieces 7 of different lengths.

[0058] During the grinding process of the centerless grinder in the prior art, the waste material ground by the grinding wheel 202 will fall onto the blade and the workpiece 7 being ground. When the workpiece 7 rotates past the blade, the waste material on the workpiece 7 and the blade can easily damage the workpiece 7 and affect the quality of the workpiece 7 being ground.

[0059] The present invention forms a V-shape by passing the belt 606 through the top of the driven assembly 604 and the bottom of the adjusting roller assembly 605. Figure 7 When the driven component 604 and the adjusting roller component 605 support the bottom of the polishing workpiece 7, a blanking cavity is formed between the polishing workpiece 7 and the belt 606, and the polished waste will fall on the belt 606. Since there is a blanking cavity between the belt 606 and the polishing workpiece 7, when the adjusting wheel 302 drives the polishing workpiece 7 to rotate, the polishing workpiece 7 will not contact the waste, thereby avoiding friction between the waste and the polishing workpiece 7, ensuring the quality of the polishing workpiece 7, and at the same time, the waste can pass through the diamond mesh holes on the belt 606 and fall into the dust collecting plate 6071.

[0060] The present invention connects the negative pressure chamber 6072 to the negative pressure machine 6023, and by starting the negative pressure machine 6023, the negative pressure chamber 6072 generates negative pressure. The negative pressure chamber 6072 first sucks the waste from the dust collecting plate 6071 into the negative pressure chamber 6072 through the suction port 6073, and then the negative pressure absorbs the waste on the polishing workpiece 7 through the mesh holes on the belt 606, thereby cleaning the waste on the polishing workpiece 7.

[0061] When the radial dimension of the grinding workpiece 7 is smaller, the grinding workpiece 7 is lighter under the same dimension. In order to prevent the negative pressure of the negative pressure chamber 6072 from hindering the rotation and feeding of the grinding workpiece 7, the position of the regulating roller assembly 605 needs to be adjusted downwards. Figure 10 and Figure 11 During this process, the adjusting roller assembly 605 drives the baffle 6055 to slide at the bottom of the negative pressure chamber 6072 via the adjusting shaft 6053 and the connecting rod 6054. At this time, the baffle 6055 gradually covers the dust suction port 6073 in the negative pressure chamber 6072, thereby adjusting the size of the dust suction port 6073. As the adjusting roller assembly 605 moves downward, the adjusting roller assembly 605 tightens the belt 606 via the convex roller 6052. At this time, the diamond-shaped opening on the belt 606 is stretched, thereby adjusting the diameter of the through hole of the belt 606.

[0062] When the supporting side plates 6041 on both sides of the top of the support box 601 and the supporting chassis 6051 between the supporting side plates 6041 support the bottom of the polished workpiece 7, the adjustment of the adjusting roller assembly 605 is stopped. At this time, the negative pressure of the negative pressure chamber 6072 on the polished workpiece 7 is reduced, so as to avoid the negative pressure of the negative pressure chamber 6072 hindering the rotation and feeding of the polished workpiece 7. Since the position of the adjusting roller assembly 605 is lowered, the size of the through hole on the belt 606 is increased, so as to avoid the situation where waste materials clog the through hole of the belt 606 due to insufficient negative pressure.

[0063] When the radial dimension of the polished workpiece 7 is larger, under the condition of the same size, the polished workpiece 7 is heavier. When the polished workpiece 7 has a certain weight, the influence of the negative pressure on the polished workpiece 7 is extremely small and can be ignored.

[0064] In order to prevent the waste material polished by the grinding wheel 202 from clogging the through hole on the belt 606, a convex roller 6052 is installed on the supporting chassis 6051. The rotation of the polishing workpiece 7 drives the supporting chassis 6051 and the convex roller 6052 to rotate synchronously. Figure 8 and Figure 10 The rotation of the convex roller 6052 can tighten the belt 606 of the local adjusting roller assembly 605, so that the size of the diamond-shaped opening on the belt 606 can be intermittently adjusted to avoid the phenomenon of grinding waste blocking the through holes on the belt 606.

[0065] See also Figures 1-10As shown, the present invention is a method for using a high-efficiency CNC centerless grinder, which is applied to the high-efficiency CNC centerless grinder as described in the above embodiment, and includes the following steps:

[0066] Step S1: The polishing workpieces 7 are sequentially placed on the feeding belt 502, and the feeding belt 502 is started. The feeding belt 502 sequentially conveys the polishing workpieces 7 between the polishing wheel 202 and the regulating wheel 302;

[0067] Step S2: After the workpiece 7 to be polished enters between the polishing wheel 202 and the adjusting wheel 302, the workpiece 7 to be polished first contacts the supporting side plates 6041 at both ends of the top of the supporting box 601, and the positions of the adjusting rod 403 and the adjusting plate 404 are adjusted by the adjusting head 402, so that the bottom roller 405 at the bottom of the adjusting plate 404 presses down the workpiece 7 to enable the bottom of the workpiece 7 to contact the supporting side plates 6041 and the supporting bottom plate 6051 respectively, and then the position of the adjusting roller assembly 605 is fixed.

[0068] Step S3: Use the adjusting head 402 to adjust the adjusting plate 404 upwards so that there is a distance between the top of the grinding workpiece 7 and the bottom roller 405;

[0069] Step S4: Start the grinding assembly 2 and the adjusting assembly 3. The grinding assembly 2 grinds the workpiece 7. The adjusting assembly 3 drives the workpiece 7 to rotate and feed. Then, the driving roller 603 is driven to rotate through the transmission assembly 602. The driving roller 603 drives the driven assembly 604 to rotate through the belt 606, providing rotation assistance for the workpiece 7. Therefore, the rotation speed of the adjusting wheel 302 can be appropriately reduced to reduce the friction between the adjusting wheel 302 and the workpiece 7.

[0070] like Figure 3-Figure 13 As shown, as a preferred embodiment of the present invention, step S4 specifically includes the following steps:

[0071] Step S41: During the grinding process of the workpiece 7, the grinding waste will fall onto the belt 606, and then the waste can pass through the diamond mesh on the belt 606 and fall into the dust collecting plate 6071;

[0072] Step S42: During the grinding process of the workpiece 7, the negative pressure chamber 6072 is connected to the negative pressure machine 6023. By starting the negative pressure machine 6023, negative pressure is generated in the negative pressure chamber 6072. The negative pressure chamber 6072 first sucks the waste from the dust collecting plate 6071 into the negative pressure chamber 6072 through the suction port 6073. Then, the negative pressure absorbs the waste on the workpiece 7 through the mesh on the belt 606.

[0073] Step S43: During the grinding process of the workpiece 7, the rotation of the workpiece 7 drives the supporting chassis 6051 and the convex roller 6052 to rotate synchronously. The rotation of the convex roller 6052 can tighten the belt 606 of the local adjustment roller assembly 605, so that the size of the diamond-shaped opening on the belt 606 can be intermittently adjusted to prevent the grinding waste from clogging the through hole on the belt 606.

[0074] The implementation principle of the present invention is:

[0075] When in use, the workpieces 7 to be polished are placed on the feeding belt 502 in sequence, and the feeding belt 502 is started. The feeding belt 502 conveys the workpieces to be polished between the grinding wheel 202 and the regulating wheel 302 in sequence.

[0076] After the workpiece 7 enters between the grinding wheel 202 and the adjusting wheel 302, it first contacts the supporting side plates 6041 at both ends of the top of the support box 601. The adjusting head 402 adjusts the position of the adjusting rod 403 and the adjusting plate 404, causing the bottom roller 405 at the bottom of the adjusting plate 404 to press down on the workpiece 7, so that the bottom of the workpiece 7 can contact the supporting side plates 6041 and the supporting bottom plate 6051 respectively. The position of the adjusting roller assembly 605 is then fixed, and the adjusting head 402 adjusts the adjusting plate 404 upward to create a gap between the top of the workpiece 7 and the bottom roller 405. The bottom roller 405 is used to limit the up and down vibration of the workpiece 7 during the grinding process, thereby limiting the movement of the workpiece 7 in the height direction.

[0077] In the present invention, the supporting side plates 6041 on both sides of the top of the support box 601 and the supporting chassis 6051 between the supporting side plates 6041 can support the bottom of the grinding workpiece 7. When the grinding wheel 202 grinds the grinding workpiece 7, the grinding workpiece 7 has high stability. Even under the premise that the radial dimensions of the grinding workpiece 7 are different, the grinding workpiece 7 can still be supported by adjusting the adjustment roller assembly 605, thereby reducing the activity space of the grinding workpiece 7 on the supporting dust removal assembly 6. Compared with the blade support of the prior art, the present invention can provide extremely high stability for the polished workpiece 7. At the same time, it cooperates with the motor 6024 to drive the active roller 603 to rotate, and the active roller 603 drives the driven component 604 to rotate through the belt 606, providing rotation assistance for the polished workpiece 7. Therefore, the rotation speed of the adjusting wheel 302 can be appropriately reduced, the friction between the adjusting wheel 302 and the polished workpiece 7 can be reduced, and the vibration between the adjusting wheel 302 and the polished workpiece 7 can be further reduced (it should be noted that if the friction between the adjusting wheel 302 and the polished workpiece 7 is too large, the grinding resistance will increase, making it difficult for the workpiece to maintain a stable rotation state, thereby generating vibration).

[0078] During the grinding process of the centerless grinder in the prior art, the waste material ground by the grinding wheel 202 will fall onto the blade and the workpiece 7 being ground. When the workpiece 7 rotates past the blade, the waste material on the workpiece 7 and the blade can easily damage the workpiece 7 and affect the quality of the workpiece 7 being ground.

[0079] The present invention forms a V-shape by passing the belt 606 through the top of the driven assembly 604 and the bottom of the adjusting roller assembly 605. Figure 7 When the driven component 604 and the adjusting roller component 605 support the bottom of the polishing workpiece 7, a blanking cavity is formed between the polishing workpiece 7 and the belt 606, and the polished waste will fall on the belt 606. Since there is a blanking cavity between the belt 606 and the polishing workpiece 7, when the adjusting wheel 302 drives the polishing workpiece 7 to rotate, the polishing workpiece 7 will not contact the waste, thereby avoiding friction between the waste and the polishing workpiece 7, ensuring the quality of the polishing workpiece 7, and at the same time, the waste can pass through the diamond mesh holes on the belt 606 and fall into the dust collecting plate 6071.

[0080] The present invention connects the negative pressure chamber 6072 to the negative pressure machine 6023, and by starting the negative pressure machine 6023, the negative pressure chamber 6072 generates negative pressure. The negative pressure chamber 6072 first sucks the waste from the dust collecting plate 6071 into the negative pressure chamber 6072 through the suction port 6073, and then the negative pressure absorbs the waste on the polishing workpiece 7 through the mesh holes on the belt 606, thereby cleaning the waste on the polishing workpiece 7.

[0081] When the radial dimension of the grinding workpiece 7 is smaller, the grinding workpiece 7 is lighter under the same dimension. In order to prevent the negative pressure of the negative pressure chamber 6072 from hindering the rotation and feeding of the grinding workpiece 7, the position of the regulating roller assembly 605 needs to be adjusted downwards. Figure 10 and Figure 11 During this process, the adjusting roller assembly 605 drives the baffle 6055 to slide at the bottom of the negative pressure chamber 6072 via the adjusting shaft 6053 and the connecting rod 6054. At this time, the baffle 6055 gradually covers the dust suction port 6073 in the negative pressure chamber 6072, thereby adjusting the size of the dust suction port 6073. As the adjusting roller assembly 605 moves downward, the adjusting roller assembly 605 tightens the belt 606 via the convex roller 6052. At this time, the diamond-shaped opening on the belt 606 is stretched, thereby adjusting the diameter of the through hole of the belt 606.

[0082] When the supporting side plates 6041 on both sides of the top of the support box 601 and the supporting chassis 6051 between the supporting side plates 6041 support the bottom of the polished workpiece 7, the adjustment of the adjusting roller assembly 605 is stopped. At this time, the negative pressure of the negative pressure chamber 6072 on the polished workpiece 7 is reduced, so as to avoid the negative pressure of the negative pressure chamber 6072 hindering the rotation and feeding of the polished workpiece 7. Since the position of the adjusting roller assembly 605 is lowered, the size of the through hole on the belt 606 is increased, so as to avoid the situation where waste materials clog the through hole of the belt 606 due to insufficient negative pressure.

[0083] When the radial dimension of the polished workpiece 7 is larger, under the condition of the same size, the polished workpiece 7 is heavier. When the polished workpiece 7 has a certain weight, the influence of the negative pressure on the polished workpiece 7 is extremely small and can be ignored.

[0084] In order to prevent the waste material polished by the grinding wheel 202 from clogging the through hole on the belt 606, a convex roller 6052 is installed on the supporting chassis 6051. The rotation of the polishing workpiece 7 drives the supporting chassis 6051 and the convex roller 6052 to rotate synchronously. Figure 8 and Figure 10 The rotation of the convex roller 6052 can tighten the belt 606 of the local adjusting roller assembly 605, so that the size of the diamond-shaped opening on the belt 606 can be intermittently adjusted to avoid the phenomenon of grinding waste blocking the through holes on the belt 606.

[0085] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A high-efficiency CNC centerless grinder, characterized by: The invention comprises a grinding machine body (1) and a grinding assembly (2) and an adjusting assembly (3) mounted on the grinding machine body (1); a feeding assembly (5) is mounted on the grinding machine body (1); a grinding workpiece (7) is placed on the feeding assembly (5); a supporting dust removal assembly (6) is mounted between the grinding assembly (2) and the adjusting assembly (3); and a limiting assembly (4) is mounted on the top of the grinding assembly (2) and the adjusting assembly (3); The limiting assembly (4) includes a fixed plate (401) and an adjustable adjustment rod (403) mounted on the fixed plate (401), the adjustment rod (403) is connected to the adjustment plate (404), a bottom roller (405) is mounted at the bottom of the adjustment plate (404), and the bottom roller (405) is arranged on the top of the grinding workpiece (7); The supporting dust removal assembly (6) includes a supporting box (601), an active roller (603) is installed in the supporting box (601), the active roller (603) is driven by the transmission assembly (602), driven assemblies (604) are respectively installed on both sides of the top of the supporting box (601), and an adjusting roller assembly (605) that can be vertically adjusted and fixed is installed between the driven assemblies (604), a belt (606) is installed on the active roller (603), the driven assembly (604) and the adjusting roller assembly (605), and the mesh on the belt (606) is a diamond mesh. A dust collecting assembly (607) is installed inside the supporting box (601), and the dust collecting assembly (607) is installed inside the belt (606); The driven assembly (604) includes a supporting side disc (6041) and a driven roller (6042), the supporting side disc (6041) and the driven roller (6042) being coaxially connected, the adjusting roller assembly (605) includes a supporting chassis (6051) and a convex roller (6052), the supporting chassis (6051) and the convex roller (6052) being coaxially connected, the supporting side disc (6041) and the supporting chassis (6051) being in contact with the grinding workpiece (7), and the belt (606) being mounted on the driven roller (6042) and the convex roller (6052); An adjusting shaft (6053) is rotatably mounted on the supporting chassis (6051), and the adjusting shaft (6053) is connected to a baffle (6055) via a connecting rod (6054). The dust collecting assembly (607) comprises a negative pressure chamber (6072) and a dust collecting plate (6071) mounted on the top of the negative pressure chamber (6072). A dust suction port (6073) is provided on the negative pressure chamber (6072), and the negative pressure machine (6023) is connected to the negative pressure chamber (6072). The baffle (6055) is slidably mounted on the top of the negative pressure chamber (6072), and the baffle (6055) covers the dust suction port (6073).

2. A high-efficiency CNC centerless grinding machine according to claim 1, characterized in that: The feeding assembly (5) comprises a bracket (501), a feeding belt (502) for conveying the polishing workpiece (7) is installed in the bracket (501), and the feeding belt (502) is directly opposite between the polishing assembly (2) and the adjusting assembly (3).

3. The high-efficiency CNC centerless grinding machine according to claim 2, characterized in that: The grinding assembly (2) comprises a grinding box (201) and a grinding wheel (202) installed inside the grinding box (201); the adjusting assembly (3) comprises a control box (301) and an adjusting wheel (302) installed inside the control box (301); a supporting box (601) is located between the grinding wheel (202) and the adjusting wheel (302); and a grinding workpiece (7) on the supporting box (601) contacts the grinding wheel (202) and the adjusting wheel (302), respectively.

4. The high-efficiency CNC centerless grinding machine according to claim 3, characterized in that: An adjusting head (402) is installed on the top of the limiting assembly (4), and the adjusting head (402) is connected to the adjusting rod (403). There is a distance between the bottom roller (405) and the top of the grinding workpiece (7).

5. The high-efficiency CNC centerless grinding machine according to claim 4, characterized in that: The support box (601) is provided with a vertical slot (608), the regulating roller assembly (605) is slidably mounted in the vertical slot (608), and the regulating roller assembly (605) is connected to the side wall of the vertical slot (608) via a return spring (609).

6. The high-efficiency CNC centerless grinding machine according to claim 5, characterized in that: The transmission assembly (602) comprises a protective shell (6021), and a motor (6024) and a negative pressure machine (6023) installed inside the protective shell (6021). The negative pressure machine (6023) is connected to the dust collection assembly (607). The motor (6024) is coaxially connected to the active roller (603). A heat dissipation port (6022) is provided at the bottom of the protective shell (6021).

7. A method for using a high-efficiency CNC centerless grinder, characterized in that: The method is applied to the high-efficiency CNC centerless grinder according to claim 6, and the method comprises the following steps: Step S1: placing the polishing workpieces (7) on the feeding belt (502) in sequence, starting the feeding belt (502), and the feeding belt (502) conveying the polishing workpieces (7) between the polishing wheel (202) and the regulating wheel (302) in sequence; Step S2: After the grinding workpiece (7) enters between the grinding wheel (202) and the regulating wheel (302), the grinding workpiece (7) first contacts the supporting side plates (6041) at both ends of the top of the supporting box (601), and the position of the regulating rod (403) and the regulating plate (404) is adjusted by the regulating head (402), so that the bottom roller (405) at the bottom of the regulating plate (404) presses down the grinding workpiece (7), so that the bottom of the grinding workpiece (7) can contact the supporting side plates (6041) and the supporting bottom plate (6051), and then the position of the regulating roller assembly (605) is fixed; Step S3: adjusting the adjustment plate (404) upwards by means of the adjustment head (402) so that there is a distance between the top of the grinding workpiece (7) and the bottom roller (405); Step S4: Start the grinding assembly (2) and the adjusting assembly (3), the grinding assembly (2) grinds the grinding workpiece (7), the adjusting assembly (3) drives the grinding workpiece (7) to rotate and feed, and then drives the active roller (603) to rotate through the transmission assembly (602), and the active roller (603) drives the driven assembly (604) to rotate through the belt (606), providing rotation assistance for the grinding workpiece (7). Therefore, the rotation speed of the adjusting wheel (302) can be appropriately reduced, reducing the friction between the adjusting wheel (302) and the grinding workpiece (7).

8. The method for using a high-efficiency CNC centerless grinder according to claim 7, characterized in that: The step S4 specifically includes the following steps: Step S41: During the grinding process of the workpiece (7), the grinding waste will fall on the belt (606), and then the waste can fall into the dust collecting plate (6071) through the diamond mesh on the belt (606); Step S42: During the grinding process of the grinding workpiece (7), the negative pressure chamber (6072) is connected to the negative pressure machine (6023). By starting the negative pressure machine (6023), negative pressure is generated in the negative pressure chamber (6072). The negative pressure chamber (6072) first sucks the waste from the dust collecting plate (6071) into the negative pressure chamber (6072) through the suction port (6073). Then, the negative pressure absorbs the waste on the grinding workpiece (7) through the mesh on the belt (606); Step S43: During the grinding process of the workpiece (7), the rotation of the workpiece (7) drives the supporting chassis (6051) and the convex roller (6052) to rotate synchronously. The rotation of the convex roller (6052) can tighten the belt (606) of the local adjustment roller assembly (605), so that the size of the diamond-shaped opening on the belt (606) can be intermittently adjusted to prevent the grinding waste from clogging the through hole on the belt (606).

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