High-efficiency numerical control centerless grinding machine and using method thereof

Abstract

The invention belongs to the technical field of centerless grinding machines, and particularly relates to a high-efficiency numerical control centerless grinding machine and a using method thereof.The high-efficiency numerical control centerless grinding machine comprises a grinding machine body, a grinding assembly and an adjusting assembly, a supporting dust removal assembly is installed between the grinding assembly and the adjusting assembly, and limiting assemblies are installed at the tops of the grinding assembly and the adjusting assembly. The supporting side discs and the supporting bottom disc on the two sides of the top of the supporting box support the bottom of a grinding workpiece, when the grinding wheel grinds the grinding workpiece, the stability of the grinding workpiece is high, and even on the premise that the radial sizes of the grinding workpiece are different, the grinding workpiece can still be supported by adjusting the adjusting roller assembly; and the moving space of the polished workpiece on the supporting dust removal assembly is reduced.

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 use method thereof. Background Art

[0002] A centerless grinder is a grinder that grinds workpieces without using the workpiece axis positioning method. A centerless grinder consists of three main components: a grinding wheel, an adjusting wheel, and a support plate. The grinding wheel is the main cutting tool of a centerless grinder, which is used to remove material from the surface of the workpiece, and the diameter of the grinding wheel is usually larger than the diameter of the adjusting wheel. The adjusting wheel is also called a drive wheel or feed wheel, which controls the speed of the workpiece, preventing the workpiece from accelerating and rotating at the same speed as the grinding wheel. The support plate plays the role of supporting the workpiece in a centerless grinder.

[0003] When a centerless grinder is in use, the workpiece needs to be placed on a support plate between the grinding wheel and the guide wheel. The grinding wheel starts to rotate at high speed for grinding, while the guide wheel rotates in the same direction at a slower speed, driving the workpiece to rotate and make circular feed. When a centerless grinder processes workpieces with different shaft diameters, it is easy to cause the workpiece to vibrate during the grinding process. This is because the rigidity and stability of workpieces of different diameters will be different under the action of grinding force. Especially for slender workpieces, because the workpiece is thinner, after the workpiece is placed on the support plate, the workpiece has a large range of movement on the support plate, which is more prone to vibration and bending deformation, thus affecting the processing 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 purpose of the present invention can be achieved through the following technical solutions: 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 is installed on the grinder body, a grinding workpiece is placed on the feeding assembly, a supporting dust removal assembly is installed between the grinding assembly and the adjustment assembly, and a limit assembly is installed on the top of the grinding assembly and the adjustment assembly;

[0006] The limiting assembly includes a fixed plate and an adjustable adjusting rod installed on the fixed plate, the adjusting rod is connected to the adjusting plate, a bottom roller is installed at the bottom of the adjusting 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 holes on the belts are diamond-shaped mesh holes, 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 the present 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 to between the polishing assembly and the adjusting assembly.

[0009] As a further optimization or improvement of the present solution, the grinding assembly includes a grinding box and a grinding wheel installed inside the grinding box, the adjusting assembly includes a control box and an adjusting wheel installed inside the control box, the supporting box is located between the grinding wheel and the adjusting wheel, and the grinding workpiece on the supporting box is in contact with the grinding wheel and the adjusting wheel respectively.

[0010] As a further optimization or improvement of the present 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 the present solution, a vertical groove is provided on the support box, the adjusting roller assembly is slidably installed in the vertical groove, and the adjusting roller assembly is connected to the side wall of the vertical groove 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. The adjusting roller assembly includes a supporting chassis and a convex roller, which are coaxially connected. 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 the present solution, an adjusting shaft is rotatably installed on the supporting 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, and 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 is applied to the high-efficiency CNC centerless grinder as described above, the method comprising the following steps:

[0016] Step S1: placing the workpieces to be polished on the feeding belt in sequence, starting the feeding belt, and the feeding belt conveys the workpieces to between the grinding wheel and the adjusting wheel in sequence;

[0017] Step S2: After the workpiece to be ground enters between the grinding wheel and the adjusting wheel, it 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. Then the position of the adjusting roller assembly is fixed.

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

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

[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 on the belt, and then the waste can fall into the dust collecting plate through the diamond mesh holes on the belt;

[0022] Step S42: During the grinding process of the workpiece, the negative pressure chamber is connected to the negative pressure machine, and the negative pressure machine is started to generate negative pressure 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 rotation of the grinding workpiece drives 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 is polishing the workpiece, the stability of the workpiece to be polished is high. Even if 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 activity 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 to drive 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, thereby 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 workpiece to be polished, a material drop cavity is formed between the workpiece to be polished and the belt, and the polished waste will fall on the belt. Since there is a material drop cavity between the belt and the workpiece to be polished, when the adjusting wheel drives the workpiece to be polished to rotate, the workpiece to be polished will not contact with the waste, thereby avoiding friction between the waste and the workpiece, thereby ensuring the quality of the workpiece to be polished. 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 drives the supporting chassis and the convex roller to rotate synchronously by rotating the grinding workpiece. 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 that the grinding waste material blocks the through holes on the belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with 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 assembly 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] Fig. 9 It is a schematic diagram of the connection structure between the supporting side disc and the driven roller.

[0038] Fig.10 This is the coordination diagram of the dust collecting assembly and the adjusting roller assembly.

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

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

[0041] Fig.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 dust removal assembly; 601. Support box; 602. Transmission assembly; 6021. Protective shell; 6022. Heat dissipation port; 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 collecting assembly; 6071, dust collecting plate; 6072, negative pressure chamber; 6073, dust suction port; 608, vertical slot; 609, reset spring; 7, grinding workpiece. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0044] See also Figure 1-Figure 10A high-efficiency CNC centerless grinder comprises 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 mounted between the grinding assembly 2 and the adjusting assembly 3. A limiting assembly 4 is mounted on the top of the grinding assembly 2 and the adjusting assembly 3. The limiting assembly 4 comprises 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 mounted at the bottom of the adjusting plate 404. The bottom roller 405 is located at the grinding The grinding workpiece 7 is arranged on the top; 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 a transmission component 602, 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. Belts 606 are 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, and the feeding belt 502 is directly opposite to 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 gap 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 supporting box 601 is located between the grinding wheel 202 and the adjusting wheel 302, and the grinding workpiece 7 on the supporting 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 changed to ensure that the transmission wrap angle of the active roller 603 is not 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 adjusted by numerical control to achieve the accuracy of the adjustment of the grinding wheel 202 and the adjusting wheel 302. During the grinding process, there is a gap between the bottom roller 405 and the top of the grinding workpiece 7 to prevent the bottom roller 405 from directly contacting the grinding workpiece 7 to hinder the rotation of the grinding workpiece 7.

[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 adjusting wheel 302 in sequence.

[0050] When the workpiece 7 to be ground enters between the grinding wheel 202 and the adjusting wheel 302, the workpiece 7 to be ground first contacts the supporting side plates 6041 at both ends of the top of the supporting box 601, and the adjusting head 402 adjusts the positions of the adjusting rod 403 and the adjusting plate 404, so that the bottom roller 405 at the bottom of the adjusting plate 404 presses down the workpiece 7 to make the bottom of the workpiece 7 to be ground able to contact the supporting side plates 6041 and the supporting bottom plate 6051, and then fixes the position of the adjusting roller assembly 605, and adjusts the adjusting plate 404 upwards through the adjusting head 402, so that there is a gap between the top of the workpiece 7 to be ground and the bottom roller 405. The bottom roller 405 is used to limit the up and down vibration of the workpiece 7 to be ground during the grinding process, so as to limit 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 supporting box 601 and the supporting bottom plate 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 adjusting 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, and at the same time cooperate 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 via 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, and a heat dissipation port 6022 is opened at the bottom of the protective shell 6021.

[0055] Specifically, the driven component 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 plate 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 materials ground by the grinding wheel 202 will fall onto the blade and the workpiece 7 being ground. When the workpiece 7 is rotated and passes through the blade, the workpiece 7 and the waste materials on the blade are likely to damage the workpiece 7 and affect the quality of the workpiece 7.

[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, as shown in FIG. Figure 7 When the driven component 604 and the adjusting roller component 605 support the bottom of the polished workpiece 7, a material drop cavity is formed between the polished workpiece 7 and the belt 606, and the polished waste will fall on the belt 606. Since there is a material drop cavity between the belt 606 and the polished workpiece 7, when the adjusting wheel 302 drives the polished workpiece 7 to rotate, the polished workpiece 7 will not contact the waste, thereby avoiding friction between the waste and the polished workpiece 7, ensuring the quality of the polished 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, 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, and then the negative pressure absorbs the waste on the polished workpiece 7 through the mesh holes on the belt 606, thereby cleaning the waste on the polished workpiece 7.

[0061] When the radial dimension of the grinding workpiece 7 is smaller, the grinding workpiece 7 is lighter in weight 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 adjusting roller assembly 605 needs to be adjusted downward, see Fig.10 and Fig.11 During this process, the adjusting roller assembly 605 drives the baffle 6055 to slide at the bottom of the negative pressure chamber 6072 through the adjusting shaft 6053 and the connecting rod 6054. At this time, the baffle 6055 gradually covers the suction port 6073 on the negative pressure chamber 6072, thereby adjusting the size of the suction port 6073. As the adjusting roller assembly 605 moves downward, the adjusting roller assembly 605 tightens the belt 606 through the convex roller 6052. At this time, the diamond-shaped opening on the belt 606 is elongated, thereby adjusting the diameter of the through hole on the belt 606.

[0062] When the supporting side plates 6041 on both sides of the top of the supporting box 601 and the supporting bottom plate 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 block 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 dimension, the weight of the polished workpiece 7 is larger. 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, and the supporting chassis 6051 and the convex roller 6052 are driven to rotate synchronously by the rotation of the polished workpiece 7. Figure 8 and Fig.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 that the grinding waste blocks the through hole on the belt 606.

[0065] See also Figure 1-Figure 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 the method comprises the following steps:

[0066] Step S1: Place the workpieces 7 to be polished on the feeding belt 502 in sequence, start the feeding belt 502, and the feeding belt 502 conveys the workpieces 7 to between the grinding wheel 202 and the adjusting wheel 302 in sequence;

[0067] Step S2: After the workpiece 7 to be ground enters between the grinding wheel 202 and the adjusting wheel 302, the workpiece 7 first contacts with 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 with 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: adjusting the adjusting plate 404 upwards by the adjusting head 402 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 component 2 and the adjusting component 3, the grinding component 2 grinds the grinding workpiece 7, the adjusting component 3 drives the grinding workpiece 7 to rotate and feed, and then drives the active roller 603 to rotate through the transmission component 602, and the active roller 603 drives the driven component 604 to rotate through the belt 606 to provide rotation assistance for the grinding 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 grinding 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 on the belt 606, and then the waste can fall into the dust collecting plate 6071 through the diamond mesh holes on the belt 606;

[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, and 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, the workpiece 7 rotates to drive 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 adjusting 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 holes 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 adjusting wheel 302 in sequence.

[0076] When the workpiece 7 to be ground enters between the grinding wheel 202 and the adjusting wheel 302, the workpiece 7 to be ground first contacts the supporting side plates 6041 at both ends of the top of the supporting box 601, and the adjusting head 402 adjusts the positions of the adjusting rod 403 and the adjusting plate 404, so that the bottom roller 405 at the bottom of the adjusting plate 404 presses down the workpiece 7 to make the bottom of the workpiece 7 to be ground able to contact the supporting side plates 6041 and the supporting bottom plate 6051, and then fixes the position of the adjusting roller assembly 605, and adjusts the adjusting plate 404 upwards through the adjusting head 402, so that there is a gap between the top of the workpiece 7 to be ground and the bottom roller 405. The bottom roller 405 is used to limit the up and down vibration of the workpiece 7 to be ground during the grinding process, so as to limit 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 supporting box 601 and the supporting bottom plate 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 adjusting 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, and at the same time cooperate 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 materials ground by the grinding wheel 202 will fall onto the blade and the workpiece 7 being ground. When the workpiece 7 is rotated and passes through the blade, the workpiece 7 and the waste materials on the blade are likely to damage the workpiece 7 and affect the quality of the workpiece 7.

[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, as shown in FIG. Figure 7 When the driven component 604 and the adjusting roller component 605 support the bottom of the polished workpiece 7, a material drop cavity is formed between the polished workpiece 7 and the belt 606, and the polished waste will fall on the belt 606. Since there is a material drop cavity between the belt 606 and the polished workpiece 7, when the adjusting wheel 302 drives the polished workpiece 7 to rotate, the polished workpiece 7 will not contact the waste, thereby avoiding friction between the waste and the polished workpiece 7, ensuring the quality of the polished 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, 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, and then the negative pressure absorbs the waste on the polished workpiece 7 through the mesh holes on the belt 606, thereby cleaning the waste on the polished workpiece 7.

[0081] When the radial dimension of the grinding workpiece 7 is smaller, the grinding workpiece 7 is lighter in weight 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 adjusting roller assembly 605 needs to be adjusted downward, see Fig.10 and Fig.11 During this process, the adjusting roller assembly 605 drives the baffle 6055 to slide at the bottom of the negative pressure chamber 6072 through the adjusting shaft 6053 and the connecting rod 6054. At this time, the baffle 6055 gradually covers the suction port 6073 on the negative pressure chamber 6072, thereby adjusting the size of the suction port 6073. As the adjusting roller assembly 605 moves downward, the adjusting roller assembly 605 tightens the belt 606 through the convex roller 6052. At this time, the diamond-shaped opening on the belt 606 is elongated, thereby adjusting the diameter of the through hole on the belt 606.

[0082] When the supporting side plates 6041 on both sides of the top of the supporting box 601 and the supporting bottom plate 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 block 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 dimension, the weight of the polished workpiece 7 is larger. 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, and the supporting chassis 6051 and the convex roller 6052 are driven to rotate synchronously by the rotation of the polished workpiece 7. Figure 8 and Fig.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 that the grinding waste blocks the through hole on the belt 606.

[0085] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A high-efficiency CNC centerless grinder, characterized by: The invention comprises a grinding machine body (1), a grinding assembly (2) and an adjusting assembly (3) mounted on the grinding machine body (1), a feeding assembly (5) mounted on the grinding machine body (1), a grinding workpiece (7) placed on the feeding assembly (5), a supporting dust removal assembly (6) mounted between the grinding assembly (2) and the adjusting assembly (3), and a limiting assembly (4) mounted on the top of the grinding assembly (2) and the adjusting assembly (3); The limiting assembly (4) comprises a fixed plate (401) and an adjustable rod (403) mounted on the fixed plate (401), the adjusting rod (403) is connected to the adjusting plate (404), a bottom roller (405) is mounted at the bottom of the adjusting plate (404), and the bottom roller (405) is arranged on the top of the grinding workpiece (7); The support dust removal component (6) comprises a support box (601), wherein an active roller (603) is installed in the support box (601), and the active roller (603) is driven by a transmission component (602); driven components (604) are respectively installed on both sides of the top of the support box (601); an adjusting roller component (605) that can be vertically adjusted and fixed 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); the mesh on the belt (606) is a diamond mesh; a dust collecting component (607) is installed inside the support box (601), and the dust collecting component (607) is installed inside the belt (606).

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

3. The high-efficiency CNC centerless grinder according to claim 1, 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 grinder according to claim 1, characterized in that: An adjusting head (402) is installed on the top of the limiting assembly (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).

5. The high-efficiency CNC centerless grinder according to claim 1, characterized in that: The support box (601) is provided with a vertical slot (608), the adjusting roller assembly (605) is slidably installed in the vertical slot (608), and the adjusting 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 grinder according to claim 1, 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); and a heat dissipation port (6022) is provided at the bottom of the protective shell (6021).

7. The high-efficiency CNC centerless grinder according to claim 1, characterized in that: The driven assembly (604) comprises 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) comprises 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 installed on the driven roller (6042) and the convex roller (6052).

8. The high-efficiency CNC centerless grinder according to claim 7, characterized in that: An adjusting shaft (6053) is rotatably installed on the supporting chassis (6051), and the adjusting shaft (6053) is connected to the baffle (6055) through a 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), and 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).

9. A method for using a high-efficiency CNC centerless grinder, characterized in that: The method is applied to the high-efficiency CNC centerless grinder as described in any one of claims 1 to 8 above, and the method comprises the following steps: Step S1: placing the grinding workpieces (7) on the feeding belt (502) in sequence, starting the feeding belt (502), and the feeding belt 502 sequentially conveys the grinding workpieces 7 between the grinding wheel 202 and the adjusting wheel 302; Step S2: After the grinding workpiece (7) enters between the grinding wheel (202) and the adjusting 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 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 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 adjusting roller assembly (605) is fixed. Step S3: adjusting the adjustment plate (404) upwards through 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 component (2) and the adjusting component (3), the grinding component (2) grinds the grinding workpiece (7), the adjusting component (3) drives the grinding workpiece (7) to rotate and feed, and then drives the active roller (603) to rotate through the transmission component (602), and the active roller (603) drives the driven component (604) to rotate through the belt (606), providing rotation assistance for the grinding workpiece (7), so that 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).

10. The method for using a high-efficiency CNC centerless grinder according to claim 9, characterized in that: The step S4 specifically comprises 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 holes on the belt (606); Step S42: During the grinding process of the workpiece (7), the negative pressure chamber (6072) is connected to the negative pressure machine (6023), and the negative pressure machine (6023) is started to generate negative pressure 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), and then the negative pressure absorbs the waste on the workpiece (7) through the mesh on the belt (606); Step S43: During the grinding process of the workpiece (7), the workpiece (7) rotates to drive 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 adjusting 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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