Intelligent hardware grinding device and grinding process thereof

Abstract

The invention relates to the related technical field of grinding machinery, discloses an intelligent hardware grinding device and a grinding process thereof, and aims to solve the problem that effective grinding cannot be performed due to the fact that a protrusion defect is located between a steel part and a grinding seat. When the driving motor drives the steel part, the output torque can be limited through the first torque limiting base and the right connecting base, and when the protruding defect of the steel part moves to the position of the grinding wheel, the rotating resistance of the steel part is increased through blocking of the grinding wheel on the protruding defect. And power weakening of the driving motor is achieved through the first torque limiting base and the right connecting base, in the process, the steel piece drives the protrusion to still have the rotating tendency, the grinding motor drives the grinding wheel to continuously grind the defect of the protrusion, and after the defect of the outer side of the steel piece is completely ground, the steel piece and the grinding wheel recover relative same-direction rotation again.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machinery, and particularly to an intelligent grinding device for hardware parts and its grinding process. Background Art

[0002] As an essential basic component in industrial production and daily life, the manufacturing process and quality control of hardware parts are of crucial importance. Hardware parts refer to various metal devices and tools carefully manufactured from raw materials such as gold, silver, copper, iron, tin, etc. through a series of processing techniques. These hardware parts have different shapes and diverse functions. From the screws and hinges used in daily household items to the connectors in building structures and the transmission components in mechanical equipment, they all rely on metal processing techniques.

[0003] In the production process of hardware parts, the grinding device plays a key role. It can accurately remove the defects on the outer surface of the hardware parts to be manufactured (such as the protrusions generated during the casting process and the burrs remaining after cutting). Taking the manufacture of a cross-handle socket wrench as an example, in the production process of the cross-handle socket wrench, first, a cylindrical blank is selected, and its diameter is usually set within the range of 50 - 63 mm, and high-carbon steel or stainless steel is selected as the material. These two types of steel have good strength and wear resistance, which can meet the requirements of the wrench to withstand a large torque during use. The selected blank is subjected to a grinding and polishing process, which is crucial. Through grinding and polishing, the outer part of the steel part becomes relatively smooth, and metal burrs, protrusions and other defects can be effectively eliminated. If these defects are not processed, during the long-term use of the wrench, the user's hand frequently contacts the wrench, which is likely to cause hand abrasion and affect the use experience and safety.

[0004] After the grinding and polishing are completed, the process enters the welding and machining of the socket hole. Four processed steel parts are precisely welded in a cross shape to ensure the stable structure of the cross handle, with tight connections between all components and no loosening. At the same time, the socket hole is machined at the end of the steel part by welding or grinding. Thus, the basic production process of a cross-handle socket wrench is completed.

[0005] In the field of hardware processing, in order to achieve efficient and uniform grinding on the outer side of a steel frame, after retrieval, the publication number CN220161980U discloses a device for uniformly grinding the outer wall of a steel pipe, which has unique designs and advantages in the grinding and processing of hardware. It includes: The device for uniformly grinding the outer wall of the steel pipe ingeniously sets key components such as a transmission rod, a single-rotation reciprocating lead screw, a moving seat, and a connecting belt. The specific working principle is as follows: A groove is opened on the right side of the bottom of the base, and a limit seat is installed through a bearing. At the same time, a groove is opened on the left side of the base, and another limit seat is installed using the transmission rod. These two limit seats work together to accurately limit and fix the position of the connected steel pipe body, ensuring that the steel pipe will not shake or shift during the grinding process. Subsequently, the rotation motor is started, and the moving seat is driven to move in position through the single-rotation reciprocating lead screw. An electric telescopic rod is arranged below the bottom of the moving seat, and the electric telescopic rod is connected to the grinding seat. As the moving seat moves, the grinding seat can perform reciprocating movement grinding on the outer side wall of the steel pipe body in the left and right positions. In addition, the outer sides of the transmission rod and the single-rotation reciprocating lead screw are connected by a connecting belt. This design enables the steel pipe body to rotate during the grinding process, thereby achieving more uniform grinding of the steel pipe body, effectively improving the grinding quality and efficiency.

[0006] However, this method of using a fixed grinding seat to grind a rotating steel part, although it can achieve uniform grinding to a certain extent and effectively remove burrs on the steel pipe, still has some deficiencies. When there are manufacturing defects on the outer side of the steel part, such as local protrusions, these protrusions will become an obvious obstacle. When the rotating steel part passes through the fixed grinding seat, the protrusion will abut against the grinding seat, restricting the relative rotation of the steel part. Since the position of the grinding seat is fixed and cannot adapt to the protrusions on the steel part in a timely manner, the relative movement between the grinding seat and the steel part is finally blocked, and the protrusions cannot be effectively ground. If the steel part is forcibly rotated, because the grinding seat cannot quickly grind the protrusions in a short time, when the protrusions forcibly cross the grinding seat, an external force will be applied, resulting in a change in the position between the grinding seat and the steel part, causing the position of the steel part to shift. This position shift will seriously affect the grinding effect, making the surface of the steel part unevenly ground, and may even affect the overall quality and service performance of the hardware. Summary of the Invention

[0007] The present invention proposes an intelligent grinding device and grinding process for hardware, which has the advantage of the steel part and the grinding wheel moving in the same direction to achieve continuous fixed-point grinding of the protruding parts, and can effectively solve the problem that the protrusion defects between the steel part and the grinding seat in the background technology lead to ineffective grinding.

[0008] To achieve the above object, the present invention adopts the following technical solutions: An intelligent grinding device for hardware parts, comprising: a frame, with a driving component and a displacement adjustment component installed inside, and the clamping and rotation of steel parts are realized by using the two; a transmission component is movably installed inside the frame, and a grinding component for grinding the steel parts is assembled on the transmission component. The driving component includes: a driving slide, on the surface of which a driving motor for driving the coupling seat to rotate is installed, and a torque limiting seat I is coaxially fastened to the end of the coupling seat; a right connecting seat, movably installed on the surface of the driving slide, and a right thimble is fastened to its end; a torque limiting ejector rod I is arranged on the torque limiting seat I, and the ejector rod is pushed towards the right connecting seat under the action of a spring, so as to realize the limitation of the transmission torque; the grinding component includes: a grinding slide, and the position of the support frame is adjusted on both sides respectively through a distance adjusting screw rod and a guiding round rod; a grinding motor, installed on the support frame, and a grinding wheel and a polishing wheel for grinding the steel parts are installed on the output shaft; the rotation directions of the grinding wheel, the polishing wheel and the steel part are the same. After the protrusions on the outer side of the steel part are blocked by the grinding component, the driving component weakens the power output to the steel part.

[0009] A grinding process for an intelligent grinding device for hardware parts includes the following steps:

[0010] S1. The displacement adjustment component and the driving component clamp the two ends of the steel part for centering, and the driving component is used to realize the rotation of the steel part.

[0011] S2. The grinding component grinds the outer side of the steel part, and moreover, the rotation direction of the steel part is the same as the grinding direction of the grinding component.

[0012] S3. The transmission component is used to realize the reciprocating movement of the grinding component along the left and right of the steel part, so as to ensure the comprehensive grinding of the outer side of the steel part.

[0013] S4. After the grinding component encounters the protrusion defect on the outer side of the steel part, the driving component will weaken the power output to the steel part, forcing the protrusions on the outer side of the steel part to continuously move towards the grinding component, and using the grinding of the protrusions by the grinding component to finally eliminate the protrusion defect.

[0014] The present invention has the following beneficial effects:

[0015] An intelligent grinding device for hardware parts and its grinding process provided by the present invention. In this device, the steel part is driven by a driving motor to perform a rotational movement, and the grinding wheel is driven by a grinding motor to rotate, and finally the grinding wheel and the steel part rotate in the same direction.

[0016] During the process of driving the steel workpiece by the driving motor, the torque limiting seat 1 and the right connecting seat can effectively limit the torque output by the driving motor, thus ensuring the stability and safety of the steel workpiece during normal operation. When the convex defect on the surface of the steel workpiece moves to the grinding wheel as the steel workpiece rotates, due to the blocking effect of the grinding wheel on the convex defect, the resistance to the rotation of the steel workpiece will increase significantly. At this time, the torque limiting seat 1 and the right connecting seat can timely sense this change in resistance and weaken the power transmission between the steel workpiece and the driving motor, preventing the steel workpiece from shifting in position due to excessive resistance.

[0017] Although the steel workpiece cannot rotate at this time, since the driving motor still has a tendency to drive the right connecting seat to rotate through the torque limiting seat 1, it further forces the convex on the steel workpiece to always have a tendency to move towards the grinding wheel. At the same time, the grinding motor continuously drives the grinding wheel to rotate, and the grinding wheel can continuously grind the defective part of the convex. As the grinding progresses, the convex defect on the outside of the steel workpiece is gradually ground flat. When the defect on the outside of the steel workpiece is completely ground, the torque limiting seat 1 and the right connecting seat detect that the resistance returns to normal, and the relative rotation in the same direction is restored between the steel workpiece and the grinding wheel again. In this way, by repeating the cycle and using the relative movement between the grinding wheel and the steel workpiece, the comprehensive and effective grinding of the outer part of the steel workpiece can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of the specification depict the embodiments disclosed by the present invention and, together with the specification, are used to explain the principles disclosed by the present invention.

[0019] Referring to the drawings, the present invention can be more clearly understood according to the following detailed description, wherein:

[0020] Figure 1 is a schematic external three-dimensional structure diagram of the whole of the present invention;

[0021] Figure 2 is a schematic back three-dimensional structure diagram of the whole of the present invention;

[0022] Figure 3 is a schematic front cross-sectional structure diagram of the whole of the present invention;

[0023] Figure 4 is a schematic internal three-dimensional structure diagram of the driving assembly of the present invention;

[0024] Figure 5 is a schematic three-dimensional structure diagram of the right connecting seat in the driving assembly of the present invention;

[0025] Figure 6 is a schematic diagram of the installation position and internal three-dimensional structure of the torque limiting seat 1 in the driving assembly of the present invention;

[0026] Figure 7 is a schematic diagram of the transmission structure of the displacement adjustment assembly and the transmission assembly of the present invention;

[0027] Figure 8 Schematic diagram of the internal three-dimensional structure on the right side of the displacement adjustment component of the present invention;

[0028] Figure 9 Schematic diagram of the internal three-dimensional structure on the left side of the displacement adjustment component of the present invention;

[0029] Figure 10 Schematic diagram of the installation position and internal three-dimensional structure of the damping component in the displacement adjustment component of the present invention;

[0030] Figure 11 Schematic diagram of the installation position and three-dimensional structure between the driving push frame and the driven push frame in the displacement adjustment component of the present invention;

[0031] Figure 12 Schematic diagram of the three-dimensional structure of the locking top seat in the displacement adjustment component of the present invention;

[0032] Figure 13 Schematic diagram of the overall external three-dimensional structure of the grinding component in the present invention;

[0033] Figure 14 Schematic diagram of the installation position of the commutation slider in the grinding component of the present invention;

[0034] Figure 15 Schematic diagram of the installation position of the commutation switch in the grinding component of the present invention;

[0035] Figure 16 Schematic diagram of the relative rotation direction state between the workpiece and the grinding wheel in the present invention.

[0036] In the figure: 1. Frame; 2. Control panel.

[0037] 3. Driving component; 301. Driving sliding seat; 302. Driving motor; 303. Right connecting seat; 304. Torque limiting seat one; 305. Torque limiting ejector rod one; 306. Coupling seat; 307. Right center pin.

[0038] 4. Displacement adjustment component; 401. Displacement adjustment sliding seat; 402. Left center pin; 403. Left connecting seat; 404. Torque limiting seat two; 405. Torque limiting ejector rod two; 406. Coupling frame; 407. Driving push frame; 408. Intermediate adjustment ring frame; 409. Driven push frame; 4091. Stepping detection component; 410. Driving ring gear; 411. Locking ring gear seat; 412. Locking top seat; 4121. Inclined groove; 4122. Anti-reverse ring; 413. Guide frame; 415. Guide rod; 416. Transmission wheel frame; 417. Limiting ejector rod; 4171. Electromagnet.

[0039] 414. Damping assembly; 4141. Damping box; 4142. Piston; 4143. Check valve; 4144. Damping hole; 4145. In-place detection assembly; 4146. Connecting rod.

[0040] 5. Transmission assembly; 501. Transmission lead screw; 502. Guide rod.

[0041] 6. Grinding assembly; 601. Grinding slide; 602. Distance-adjusting lead screw; 603. Support frame; 604. Grinding motor; 605. Grinding wheel; 606. Polishing wheel; 607. Partition disc; 608. Reversing slider; 609. Reversing switch.

[0042] 7. Steel part; 8. Control center. Detailed implementation mode

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0044] In the first embodiment, in the production and manufacturing process of the cross-handle socket wrench, the grinding treatment of the high-carbon steel / stainless steel blank of the cylinder is a very crucial step.

[0045] Before the grinding operation, it is necessary to strictly inspect the quality of the high-carbon steel or stainless steel blank to ensure the stability of subsequent processing and the reliability of the product. Then, use a suitable grinding wheel or abrasive tool to perform all-round grinding on the blank according to the predetermined grinding path. Through uniform grinding operations, gradually remove the oxide layer, burrs, rust and uneven parts on the surface of the blank, so that the outer part of the blank reaches a relatively smooth state. This smooth surface treatment is not only to meet the appearance requirements, but more importantly, it can reduce the risk of wear to the operator caused by defects such as burrs or protrusions on the outside of the steel part. When the operator contacts the smooth surface of the steel part during subsequent assembly, handling, etc., it is not easy to be scratched by sharp burrs or protrusions, thus ensuring the personal safety and work efficiency of the operator.

[0046] An intelligent grinding device for hardware parts provided by this application, referring to Figure 1 and Figure 2 It can be seen that there is a driving assembly 3 supported by an adjusting lead screw and a limiting round rod inside the frame 1. Specifically, referring to Figure 1It can be clearly seen that the bottom of the driving component 3 is movably installed with the adjusting screw rod and the limiting round rod respectively. One end of the adjusting screw rod extends from the side of the frame 1 and is installed with an adjusting handwheel. When the operator drives the adjusting handwheel to rotate, the driving component 3 is reciprocated left and right along the limiting round rod by using the adjusting screw rod. When the adjusting handwheel stops rotating, the driving component 3 is restricted at the adjusted position by the self-locking property of the adjusting screw rod.

[0047] In order to effectively limit and drive the steel workpiece 7, it can be seen from Figure 1 and Figure 3 that there is a displacement adjustment component 4 fixedly installed on the left side of the surface of the frame 1 through bolts. Combining the above, when the driving component 3 moves to the left along the limiting round rod by adjusting the screw rod, the driving component 3 and the displacement adjustment component 4 are relatively close to each other. At the same time, the two can be used to press both ends of the steel workpiece 7, and finally the limiting clamping of the steel workpiece 7 is realized.

[0048] Regarding the structure of the driving component 3, combining Figures 4 - 6 it can be known that the driving slide 301 mainly provides support for its whole. The bottom of the driving slide 301 is movably installed with the adjusting screw rod and the limiting round rod respectively. There is a driving motor 302 fixedly installed on its surface by using a motor bracket. A coupling seat 306 is fixedly installed on the output shaft of the driving motor 302. There is a torque limiting seat 304 fixedly connected to the end of the coupling seat 306 by using a flange, so as to realize the synchronous rotation of the torque limiting seat 304 with the coupling seat 306. Correspondingly, a bracket is welded on the surface of the driving slide 301 on one side of the output end of the driving motor 302. A right connecting seat 303 is movably installed inside the bracket by using a bearing. By restricting the right connecting seat 303 with the bearing, the right connecting seat 303 can only rotate around its axis. After the end of the torque limiting seat 304 passes through the right connecting seat 303, a stop ring is arranged on the end of the torque limiting seat 304, and balls are arranged between the stop ring and the right connecting seat 303, so as to realize that only relative rotation can occur between the right connecting seat 303 and the torque limiting seat 304. Not only that, as Figure 6As shown, at the end of the torque limiting seat 304, there is a torque limiting ejector rod 305 that is pushed to the end of the right connecting seat 303 by a spring to the right. In this application, the number of torque limiting ejector rods 305 is taken as four as an example, and the actual number can be adjusted as required. An annular groove corresponding to the torque limiting ejector rod 305 is provided at the end of the right connecting seat 303, and arc grooves are circumferentially arranged in the annular groove. When the torque limiting ejector rod 305 abuts against the arc groove, the torque limiting seat 304 can drive the right connecting seat 303 to rotate coaxially; similarly, if the rotational resistance of the right connecting seat 303 increases, through the relative rotation between the right connecting seat 303 and the torque limiting ejector rod 305, and the torque limiting ejector rod 305 is enabled to continuously slide along the annular groove, thereby weakening the power transmission between the connecting seat 303 and the torque limiting seat 304. From Figure 3 and Figure 4 it can be seen that at the end of the right connecting seat 303, there is a right thimble 307 fastened by a flange. The end of the right thimble 307 can push against the end face of the steel part 7, thereby realizing the pressing and clamping of the steel part 7.

[0049] Based on the above, it can be seen that under normal conditions, the driving motor 302 drives the coupling seat 306 to rotate. Through the transmission of the right connecting seat 303 and the torque limiting seat 304, the right thimble 307 is forced to drive the steel part 7 to rotate. For the control of the rotation of the steel part 7, from Figure 1 and Figure 2 it can be seen that a control center 8 is fixedly installed at the bottom of the frame 1. The control center 8 is mainly a programmable logic controller (abbreviated as PLC). A control panel 2 is installed on the surface of the frame 1. By using the operation settings of the control panel 2, the driving component 3 can be enabled to drive the steel part 7 to rotate.

[0050] Regarding the grinding of the outer side of the steel part 7, in combination with Figure 1 and Figure 3 it can be seen that a transmission component 5 is movably installed inside the frame 1, and a grinding component 6 is installed on the transmission component 5. The transmission component 5 can realize the left and right reciprocating movement of the grinding component 6, and the grinding component 6 can grind the outer side of the steel part 7. Specifically, in combination with Figure 1 and Figure 13 it can be seen that the transmission component 5 mainly includes a guiding rod 502 and a transmission lead screw 501. Both are movably installed inside the frame 1, and moreover, both are movably installed with the grinding component 6 on the outside. Among them, the guiding rod 502 mainly guides the movement of the grinding component 6, and the rotation of the transmission lead screw 501 can provide power for the movement of the grinding component 6. For this embodiment 1, the power source of the transmission lead screw 501 can be a servo motor coaxial with it, which is not shown in the drawings. Only by using the servo motor to drive the transmission lead screw 501 to rotate, the grinding component 6 can be enabled to perform left and right reciprocating directional movement along the guiding rod 502.

[0051] For the structure of the grinding assembly 6, refer to Figure 13 As shown, the grinding slide 601 mainly provides support for its overall structure. The grinding slide 601 is movably installed with the transmission lead screw 501 and the orientation rod 502 respectively, so that when the transmission lead screw 501 rotates, the grinding slide 601 can move synchronously along the orientation rod 502. On both sides of the grinding slide 601, an adjustable distance lead screw 602 and a guiding round rod are movably installed by brackets, and both ends of the adjustable distance lead screw 602 and the guiding round rod are movably installed with the support frame 603. A handwheel is fixedly installed at the end of the adjustable distance lead screw 602 away from the support frame 603. By rotating the handwheel, the support frame 603 can be moved closer to the steel workpiece 7, so that the device can grind steel workpieces 7 with different diameters. A grinding motor 604 is fixedly installed at the end of the support frame 603, and a grinding wheel 605 and a polishing wheel 606 are installed on the output shaft of the grinding motor 604. Among them, there are two grinding wheels 605, and the two grinding wheels 605 are respectively located at both ends of the polishing wheel 606. It should be noted that the diameter of the polishing wheel 606 is slightly larger than that of the grinding wheel 605. This design can ensure that after the grinding wheel 605 grinds the outer side of the steel workpiece 7, the polishing wheel 606 can further polish the ground area. The polishing wheel 606 is mainly a sand cloth page wheel. Although its diameter is slightly larger than that of the grinding wheel 605, the polishing part of its outer side is flexible. Therefore, when the grinding wheel 605 and the polishing wheel 606 act on the steel workpiece 7 at the same time, the polishing wheel 606 will not overly hinder the rotation of the steel workpiece 7.

[0052] In actual application, the two ends of the steel workpiece 7 are centered and clamped by the displacement adjustment assembly 4 and the drive assembly 3, and according to the setting of the control panel 2, the drive motor 302 and the grinding motor 604 rotate synchronously. During this process, the drive motor 302 drives the steel workpiece 7 to rotate through the coupling seat 306, the torque limiting seat 1 304, the right connecting seat 303 and the right thimble 307; the grinding motor 604 drives the grinding wheel 605 and the polishing wheel 606 to rotate synchronously. The rotation direction is as Figure 16 shown. When the grinding wheel 605 rotates counterclockwise, the steel workpiece 7 also rotates counterclockwise; similarly, when the grinding wheel 605 rotates clockwise, the steel workpiece 7 also needs to rotate clockwise to ensure that the steel workpiece 7 and the grinding wheel 605 always rotate in the same direction, and the grinding wheel 605 can grind the burrs on the outer side of the steel workpiece 7. After grinding, according to the servo motor driving the transmission lead screw 501 to rotate directionally, the polishing wheel 606 is moved to the grinding position, and the polished position is polished by the polishing wheel 606 to further ensure the smoothness of the outer side of the steel workpiece 7, so as to improve the grinding quality of the outer side of the steel workpiece 7.

[0053] During this process, if there is a protrusion on the steel workpiece 7, the protrusion will move towards the grinding wheel 605 as the steel workpiece 7 rotates, as Figure 16As shown. At this time, since the steel part 7 abuts against the grinding wheel 605 due to the protrusion, its rotational resistance will increase, ultimately cutting off the power between the right connecting seat 303 and the torque limiting seat 1 304. However, during this process, since the coupling seat 306 continuously drives the torque limiting seat 1 304 to rotate, therefore, the torque limiting seat 1 304 always has a tendency to drive the right connecting seat 303 to rotate by using the torque limiting ejector rod 1 305, which also makes the steel part 7 always have a tendency to rotate counterclockwise. At the same time, when the grinding wheel 605 rotates continuously, it can continuously grind the oncoming protrusion, and finally remove the protrusion on the outer side of the steel part 7 to ensure the smoothness of the outside of the steel part 7. By using the method described in the first embodiment, it can be ensured that when a protrusion appears on the outside of the steel part 7, not only will the steel part 7 not shift, but also the steel part 7 can always convey the protrusion towards the grinding wheel 605, forcing the grinding wheel 605 to continuously polish the protrusion, ensuring that the protrusion on the outer side of the steel part 7 can be polished and eliminated by the grinding wheel 605 more quickly.

[0054] On this basis, combining Figure 14 and Figure 15 it can be seen that a partition disk 607 is installed on the output shaft of the grinding motor 604 between the polishing wheel 606 and the end of the grinding wheel 605, and the polishing wheel 606 is movably installed on the output shaft of the grinding motor 604 by means of a bearing, so as to realize the relative rotation between the polishing wheel 606 and the grinding motor 604. One end of the partition disk 607 close to the polishing wheel 606 is provided with an arc groove, which is in a "C" shape, and the arc groove is aligned with the central axis of the grinding motor 604. A commutation slider 608 is movably installed in the arc groove, and push springs are installed on both sides of the commutation slider 608 and in the arc groove. Under normal conditions, under the elastic force of the push springs, the commutation slider 608 is centered. From Figure 14 it can be seen that a round rod is provided on one side of the commutation slider 608. Correspondingly, a round hole is opened at one end of the polishing wheel 606 where the commutation slider 608 is located. When the round rod is inserted into the round hole, the synchronous rotation of the polishing wheel 606 and the commutation slider 608 can be realized. Referring to Figure 15 it can be known that a commutation switch 609 for detecting whether the commutation slider 608 is in the middle position is fixedly installed at the end of the partition disk 607. The commutation switch 609 can be a contact switch or a position sensor, etc.

[0055] Under normal conditions, when the grinding motor 604 drives the grinding wheel 605 and the polishing wheel 606 to rotate, since the polishing wheel 606 is not in contact with the steel part 7, the resistance on the outer side of the polishing wheel 606 is relatively small. When the grinding motor 604 drives the polishing wheel 606 and the grinding wheel 605 to rotate at a constant speed, under the elastic force of the push spring, the commutation slider 608 is in the middle position. At the same time, the commutation slider 608 contacts the commutation switch 609, and the commutation switch 609 sends a signal to the control center 8 in the form of an electrical signal to determine that the commutation slider 608 is in contact with the commutation switch 609, that is, the polishing wheel 606 is not in contact with the steel part 7.

[0056] When the grinding assembly 6 grinds the steel part 7, the polishing wheel 606 polishes the outer side of the steel part 7 synchronously. Since the polishing wheel 606 is in contact with the steel part 7, the rotational resistance of the polishing wheel 606 is relatively greater than the normal state. When the grinding motor 604 drives the polishing wheel 606 to rotate again, the polishing wheel 606 will drive the commutation slider 608 to compress the push spring on one side, causing the commutation slider 608 to move relatively away from the commutation switch 609, and the commutation switch 609 will send an electrical signal to the control center 8 again to determine that the polishing wheel 606 is in the polishing operation.

[0057] Based on this control, when the transmission assembly 5 drives the grinding assembly 6 to finish grinding the outer side of the steel part 7, the grinding assembly 6 will move away from the end of the steel part 7. When the polishing wheel 606 and the end of the steel part 7 are completely separated, the resistance on the polishing wheel 606 is released, and the commutation slider 608 is reset to the middle position again under the action of the push spring on both sides, and the commutation switch 609 will send an electrical signal to the control center 8. Finally, under the control of the control center 8, the servo motor drives the transmission lead screw 501, the grinding motor 604 and the drive motor 302 to rotate in the opposite direction synchronously, so that the grinding assembly 6 grinds and polishes the outer side of the steel part 7 again. After such a cycle, when the grinding assembly 6 in the first embodiment grinds steel parts 7 of different lengths, it can autonomously adjust the moving length of the grinding assembly 6 left and right to achieve multiple grinding of the steel part 7.

[0058] Embodiment 2 is a further improvement based on Embodiment 1. As another driving method of the transmission assembly 5, combined with Figure 8 、 Figure 9 and Figure 11 it can be seen that the displacement adjustment assembly 4 includes:

[0059] The displacement adjustment slide 401 is used to provide support for the entire structure. The displacement adjustment slide 401 is fastened to the frame 1 with bolts. A bracket is welded to the surface of the displacement adjustment slide 401. A left connecting seat 403 is movably mounted within the bracket using a bearing. A left ejector pin 402 is fastened to one end of the left connecting seat 403 using a flange. The left ejector pin 402 has the same structure and function as the right ejector pin 307. The left ejector pin 402 and the right ejector pin 307 respectively press and tighten the two ends of the steel component 7. A torque limiting seat 404 is coaxially and movably mounted in the left connecting seat 403. A torque limiting ejector pin 405 is movably mounted at the end of the torque limiting seat 404, which is ejected outward using a spring. The structure and effect of this part are consistent with those described in the displacement adjustment assembly 4. Both achieve the goal of reducing the transmitted power when the resistance is too large.

[0060] The end of the coupling frame 406 is provided with a driving pusher frame 407 fastened with a flange. Correspondingly, the outer side of the bracket on the displacement adjustment slide 401 is provided with an intermediate adjustment ring frame 408 mounted with a bearing. The inner side of the intermediate adjustment ring frame 408 is fixedly provided with a driven pusher frame 409. The protrusions on the outer sides of the driven pusher frame 409 and the driving pusher frame 407 are both isosceles trapezoidal. Figure 11 It can be seen that when the driving push frame 407 rotates clockwise, it pushes the driven push frame 409 to rotate clockwise synchronously, thereby achieving clockwise rotation of the intermediate adjustment ring frame 408. Conversely, when the driving push frame 407 rotates counterclockwise, the driving push frame 407 will first move away from the driven push frame 409. After the driving push frame 407 rotates one circle, it pushes the driven push frame 409 again and achieves coaxial rotation of the intermediate adjustment ring frame 408 and the driving push frame 407.

[0061] How to transfer the power of the intermediate adjustment ring frame 408 to the transmission assembly 5, combined with Figure 7 , Figure 8 and Figure 13 As can be seen, a transmission wheel frame 416 is fastened to the outer side of the middle adjustment ring frame 408. Correspondingly, a transmission wheel frame 416 is coaxially arranged on the transmission assembly 5 and with the transmission screw 501. The two transmission wheel frames 416 are in transmission connection with each other. Depending on the specific arrangement, the transmission method includes, but is not limited to, belt drive or chain drive.

[0062] In the actual application of the second embodiment, the right ejector 307 is rotated according to the driving motor 302. At the same time, the steel member 7 drives the left ejector 402 to drive the driven push frame 409 to rotate synchronously after passing through the left connecting seat 403, the torque limiting seat 2 404 and the coupling 406. Figure 11Taking the counterclockwise rotation of the middle drive push frame 407 as an example, the counterclockwise rotating drive push frame 407 causes the transmission wheel frame 416 to rotate synchronously through the driven push frame 409, and the transmission wheel frame 416 uses the gear train transmission to achieve the synchronous rotation of the transmission assembly 5. Finally, during the grinding process of the steel workpiece 7, the synchronous rotation of the transmission assembly 5 is achieved according to the gear train transmission, so that the grinding assembly 6 moves along the outer side of the steel workpiece 7, and finally the entire outer side of the steel workpiece 7 is ground.

[0063] More importantly, since the drive push frame 407 and the middle adjustment ring frame 408 in the second embodiment are driven by the driven push frame 409, the advantage of this design is that when the transmission assembly 5 drives the grinding assembly 6 to move along the outer side of the steel workpiece 7, if the protrusion on the outer side of the steel workpiece 7 just moves to the end of the grinding wheel 605. As the contact strength between the two increases, through the frictional force of the grinding motor 604 on the protrusion, the protrusion is forced to drive the steel workpiece 7 to rotate in the reverse direction. After the steel workpiece 7 rotates in the reverse direction, the drive push frame 407 rotates in the reverse direction synchronously, but the drive push frame 407 will not cause the driven push frame 409 to rotate in the reverse direction. Finally, although the steel workpiece 7 rotates in the reverse direction, the transmission assembly 5 will not transmit power, and the grinding assembly 6 always remains in this position. After that, when the protrusion moves away from the grinding wheel 605, the grinding wheel 605 will no longer push the protrusion to move. Then, according to the right connecting seat 303 and the torque limiting seat 1 304, the steel workpiece 7 will move towards the grinding wheel 605 again until the protrusion on the outer side of the steel workpiece 7 is ground.

[0064] It can be seen from this that the second embodiment not only provides another driving method for the transmission lead screw 501, but also prevents the problem that the grinding wheel 605 is blocked by the protrusion during the forward movement along the outer side of the steel workpiece 7, resulting in blocked movement.

[0065] As a supplement to the second embodiment, according to what is described in the second embodiment currently, while the steel workpiece 7 rotates, the displacement adjustment assembly 4 can use the gear train assembly to achieve that the transmission assembly 5 drives the grinding assembly 6 to perform a full grinding along the outer side of the steel workpiece 7. During the implementation of this method, the grinding assembly 6 will continuously move along the transmission assembly 5, making the polishing time of the polishing wheel 606 on the outer side of the steel workpiece 7 relatively consistent. Therefore, this can be summarized as spiral slow moving polishing.

[0066] Due to the problem that there will be protrusions on the outer side of the steel workpiece 7, when the protrusions are ground, the spirally advancing grinding assembly 6 will not stop here. Therefore, although this polishing method can polish continuously without interruption, it cannot polish the local defects (such as the position of the protrusions after grinding) specifically.

[0067] The third embodiment is to solve such problems, in combination with Figure 9 and Figure 10It can be seen that two guide rods 415 arranged at the same height are fixedly installed at the top of the displacement adjustment slider 401, and the side parts of the two guide rods 415 movably limit a guide frame 413. At the top of the guide frame 413, a locking ring gear seat 411 is movably installed by using a bearing. Correspondingly, a driving ring gear 410 is arranged at the end of the intermediate adjustment ring frame 408 and on the opposite surface of the locking ring gear seat 411.

[0068] From Figure 9 It can be seen that a spring that pushes the guide frame 413 is sleeved outside one guide rod 415. Driven by the elastic force of the spring, the guide frame 413 is forced to drive the locking ring gear seat 411 to always tend to move in the direction of the driving ring gear 410. After the locking ring gear seat 411 and the driving ring gear 410 are in contact and cooperate, the driving ring gear 410 can drive the locking ring gear seat 411 to rotate synchronously; similarly, when the locking ring gear seat 411 is disengaged from the driving ring gear 410, the locking ring gear seat 411 will not rotate following the driving ring gear 410. Combining Figure 10 It can be seen that a damping component 414 is fixedly installed on the outer side of the other guide rod 415. Among them, the damping component 414 includes: a damping box 4141 for fixing on the guide rod 415, and the damping box 4141 is filled with a sufficient amount of liquid medium, such as hydraulic oil. A piston 4142 is hermetically sleeved inside the damping box 4141, and a connecting rod 4146 that passes through the end of the damping box 4141 is fixedly installed at the end of the piston 4142. The connecting rod 4146 and the bottom of the guide frame 413 are fixedly connected by bolts. When the guide frame 413 moves along the guide rod 415, the guide frame 413 can drive the piston 4142 to move synchronously according to the connecting rod 4146. A damping hole 4144 and a one-way valve 4143 are arranged at the end of the piston 4142. The one-way valve 4143 can enable the medium in the inner cavity of the damping box 4141 and the chamber of the connecting rod 4146 to quickly pass through the one-way valve 4143 and flow to the other chamber, that is Figure 10 in, the medium in the right chamber of the piston 4142 can quickly flow to the left, while the left cannot flow to the right chamber through the one-way valve 4143; the damping hole 4144 can enable the medium in the left chamber of the damping box 4141 to slowly flow to the right when the piston 4142 moves to the left. Moreover, a position detection component 4145 is fixedly installed on the outer side of the damping box 4141. The position detection component 4145 can detect the position of the piston 4142. Under normal conditions, the piston 4142 abuts against the position detection component 4145. After the position detection component 4145 receives the position signal of the piston 4142, it conveys the information to the control center 8 in the form of an electrical signal.

[0069] On this basis, combining Figure 9 、 Figure 10 and Figure 12As shown, on the outer side of the locking ring tooth seat 411, there is a locking top seat 412 fastened by bolts. On one side of the end of the locking top seat 412, there is an inclined slot 4121. On the side of the locking top seat 412, there is a non-return ring 4122 outside the inclined slot 4121. From Figure 12 It can be seen that the non-return ring 4122 is in a "C" shape, and there is an inclined angle at its opening. Correspondingly, on the outer side of the guide rod 415, there is a support seat located below the locking top seat 412, and in the middle of the support seat, there is a limiting top rod 417 pushed downward by a spring. Therefore, the limiting top rod 417 pushed by the elastic force always has a tendency to move away from the locking top seat 412. In order to reduce the frictional resistance, generally, there are balls at the top end of the limiting top rod 417 to reduce the contact resistance between the limiting top rod 417 and the locking top seat 412. At the bottom end of the limiting top rod 417, there is an electromagnet 4171 located below the spring. Under normal conditions, the electromagnet is energized and attracts the support seat, forcing the limiting top rod 417 to move upward and overcome the spring elastic force. The electromagnet 4171 is controlled by the control center 8. By operating the control panel 2, the magnitude of its electromagnetic force can be adjusted, so as to facilitate changing the subsequent polishing time.

[0070] More importantly, when the locking top seat 412 rotates one circle, the length that the transmission assembly 5 moves the grinding assembly 6 forward is the length value of the grinding wheel 605.

[0071] When this Embodiment 3 is applied, under normal conditions, the electromagnet 4171 is energized to make the limiting top rod 417 abut against the inclined slot 4121, forcing the locking top seat 412 to drive the locking ring tooth seat 411 away from the driving ring tooth 410. The guide frame 413 compresses the spring on the guide rod 415, and the piston 4142 moves to the in-place detection assembly 4145.

[0072] Under normal conditions, the driving assembly 3 drives the steel part 7 to rotate, and the transmission assembly 5 drives the grinding assembly 6 to move along the steel part 7 by means of the gear train transmission on the displacement adjustment assembly 4. If the outer side of the steel part 7 is relatively smooth and there are no protrusions, the grinding assembly 6 will continuously grind and polish along the steel part 7 to achieve the spiral slow movement polishing described in Embodiment 2.

[0073] If there are protrusions on the outer side of the steel part 7, after the steel part 7 abuts the protrusions against the grinding assembly 6, blocked by the grinding assembly 6, the steel part 7 cannot continue to rotate. Refer to Figure 14 It can be seen that in this Embodiment 3, especially an arc slot is provided on the side of the grinding wheel 605. The advantage of this design is that when the arc slot of the grinding wheel 605 is moved to the position of the protrusion, such as Figure 16As shown, the presence of the arc groove causes the grinding wheel 605 to no longer push the protrusion. At the same time, after the steel part 7 drives the protrusion to rotate, the protrusion will further rotate following the steel part 7. However, afterwards, when the arc groove contacts the protrusion, it will cause the arc groove to push the steel part 7 to have a clockwise rotation tendency. Afterwards, refer to Figure 11 As shown, the reverse rotation of the steel part 7 will cause the driving push frame 407 to move away from the driven push frame 409. Since the stepping detection components 4091 are respectively installed on both waist parts of the driven push frame 409, under normal conditions, when the driving push frame 407 abuts against the waist of the driven push frame 409, it will squeeze the stepping detection components 4091. When the driving push frame 407 moves away from the stepping detection components 4091, the stepping detection components 4091 will send signals to the control center 8, and through the control of the control center 8, the electromagnet 4171 will be powered off and no longer generate magnetism.

[0074] Afterwards, under the push of the spring outside the limit ejector rod 417, the limit ejector rod 417 moves downward and relatively away from the locking seat 412. At the same time, when the limit ejector rod 417 no longer restricts the movement of the locking seat 412, the spring on the guide rod 415 causes the guide frame 413 to push the locking ring gear seat 411 to cooperate with the driving ring gear 410, and the driving ring gear 410 drives the locking ring gear seat 411 to rotate synchronously. Moreover, when the guide frame 413 approaches the driving ring gear 410, the piston 4142 will be pulled to move to the right through the connecting rod 4146. As Figure 10 shown, after the connecting rod 4146 pulls the piston 4142 away from the in-place detection component 4145, the anti-reverse ring 4122 also moves above the limit ejector rod 417 at this time. Afterwards, when the piston 4142 is completely separated from the in-place detection component 4145, the in-place detection component 4145 will send an electrical signal to the control center 8, and the control center 8 will be used to make the electromagnet 4171 connected again. When the electromagnet 4171 moves upward, the ball at the top of the limit ejector rod 417 will abut against the anti-reverse ring 4122, and the anti-reverse ring 4122 is used to block the limit ejector rod 417 from moving towards the inclined groove 4121.

[0075] As the grinding wheel 605 continuously grinds the protrusions on the steel part 7, the protrusions on the steel part 7 are finally eliminated. After that, as the driving component 3 drives the steel part 7 to rotate again, the steel part 7 is transmitted by the left thimble 402, causing the intermediate adjustment ring frame 408 to rotate. The intermediate adjustment ring frame 408 realizes the gear train transmission based on the transmission wheel frame 416, forcing the grinding component 6 to continue moving forward along the grinding component 6; the intermediate adjustment ring frame 408 drives the locking ring gear seat 411 and the locking top seat 412 to rotate synchronously according to the driving ring gear 410. As the locking top seat 412 rotates half a turn, the limiting ejector rod 417 will disengage from the anti-reverse ring 4122. Finally, as the intermediate adjustment ring frame 408 drives the locking top seat 412 to rotate again, the limiting ejector rod 417 will finally move to the inclined slot 4121. When the limiting ejector rod 417 abuts against the inclined slot 4121, it will limit the rotation of the locking top seat 412, so that the locking ring gear seat 411 cannot rotate. At the same time, the driving ring gear 410 cooperating with the locking ring gear seat 411 also cannot rotate. Finally, due to the increased rotation resistance of the intermediate adjustment ring frame 408, the transmission component 5 will not transmit at this time, and the driving component 3 can drive the steel part 7 to rotate, and the grinding component 6 polishes the steel part 7 at a standstill at this time.

[0076] Since the polishing wheel 606 moves to the grinding position after the locking top seat 412 rotates one circle, at this time, by extending the polishing time of the ground protrusion part, key polishing of this part is realized. As the limiting ejector rod 417 continuously pushes against the inclined slot 4121, the guide frame 413 pushes the connecting rod 4146 to move to the left, and the piston 4142 moves to the left. Since the medium in the left chamber of the damper box 4141 can only slowly flow to the right through the damper hole 4144, through the slow movement of the piston 4142, the polishing time of the polishing wheel 606 on the grinding part is extended, realizing intermittent fixed-point polishing.

[0077] Finally, as the limiting ejector rod 417 continuously pushes, the locking ring gear seat 411 is finally separated from the driving ring gear 410, and the in-place detection component 4145 detects the piston 4142 again, and the whole device returns to the normal state again.

Claims

1. An intelligent grinding device for hardware parts, characterized in that, Comprising: A frame (1) with a driving component (3) and a displacement adjustment component (4) installed inside. The clamping and rotation of a steel workpiece (7) are realized by using the two components. A transmission component (5) is movably installed inside the frame (1), and a grinding component (6) for grinding the steel workpiece (7) is assembled on the transmission component (5); The driving component (3) includes: A driving slide (301) with a driving motor (302) installed on its surface to drive the coupling seat (306) to rotate. A torque limiting seat one (304) is coaxially fastened to the end of the coupling seat (306); A right connecting seat (303) is movably installed on the surface of the driving slide (301), and a right thimble (307) is fastened to its end. A torque limiting ejector rod one (305) is arranged on the torque limiting seat one (304), and the ejector rod is pushed towards the right connecting seat (303) under the action of a spring, thereby realizing the limitation of the transmission torque; The grinding component (6) includes: A grinding slide (601) whose position is adjusted on both sides through a distance adjusting screw rod (602) and a guiding round rod for a support frame (603); A grinding motor (604) is installed on the support frame (603), and a grinding wheel (605) and a polishing wheel (606) for grinding the steel workpiece (7) are installed on the output shaft; The rotating directions of the grinding wheel (605), the polishing wheel (606) and the steel workpiece (7) are the same. After the protrusion on the outer side of the steel workpiece (7) is blocked by the grinding component (6), the driving component (3) weakens the power output to the steel workpiece (7).

2. The intelligent grinding device for hardware according to claim 1, characterized in that A control center (8) and a control panel (2) are fixedly installed on the frame (1).

3. The intelligent grinding device for hardware parts according to claim 1, characterized in that, A partition disk (607) is installed on the output shaft of the grinding motor (604) between the ends of the polishing wheel (606) and the grinding wheel (605). An arc groove is provided at one end of the partition disk (607) close to the polishing wheel (606). A reversing slider (608) is movably installed in the arc groove, and push springs are installed on both sides of the reversing slider (608) and in the arc groove. A reversing switch (609) for detecting whether the reversing slider (608) is in the middle position is fixedly installed at the end of the partition disk (607).

4. The intelligent grinding device for hardware parts according to claim 1, wherein, The transmission component (5) includes a directional rod (502) and a transmission screw rod (501).

5. The intelligent grinding device for hardware according to claim 4, characterized in that, The transmission screw rod (501) is driven by a servo motor.

6. The intelligent grinding device for hardware according to claim 4, wherein The displacement adjustment component (4) includes: A displacement adjustment slide (401) is fastened to the frame (1). A left connecting seat (403) is movably installed on its surface. A left thimble (402) is fastened to one end of the left connecting seat (403). A torque limiting seat two (404) is coaxially movably installed in the left connecting seat (403), and a torque limiting ejector rod two (405) that is pushed outwards by a spring is movably installed at the end of the torque limiting seat two (404); A driving push frame (407) is fastened to the end of a coupling frame (406). An intermediate adjustment ring frame (408) is installed on the displacement adjustment slide (401), and a driven push frame (409) is fixedly installed inside the intermediate adjustment ring frame (408); Transmission wheel frames (416) are provided on the outer side of the intermediate adjustment ring frame (408) and at the end of the transmission screw rod (501), and the two transmission wheel frames (416) are in transmission connection.

7. The intelligent hardware grinding device according to claim 6, characterized in that, The convex shapes of the outer sides of the driven push frame (409) and the driving push frame (407) are both isosceles trapezoids, and stepping detection components (4091) are respectively installed on both waist portions of the driven push frame (409).

8. The intelligent grinding device for hardware according to claim 6, wherein, A guide rod (415) is fixedly installed on the top of the displacement adjustment sliding seat (401), and a guide frame (413) pushed by a spring is movably installed on the side of the guide rod (415). A locking ring gear seat (411) movably installed on the top of the guide frame (413) is in transmission cooperation with a driving ring gear (410) arranged at the end of the intermediate adjustment ring frame (408); A damping component (414) is fixedly installed on the outer side of the guide rod (415), and the damping component (414) is used to reduce the one-way movement speed of the guide frame (413); A locking top seat (412) is tightly connected to the outer side of the locking ring gear seat (411). An inclined groove (4121) is opened on one side of the end of the locking top seat (412), and a reverse stop ring (4122) is arranged on the side of the locking top seat (412) and located outside the inclined groove (4121); A support seat is fixedly installed on the outer side of the guide rod (415) and below the locking top seat (412), and a limiting top rod (417) pushed downward by a spring is movably installed in the middle of the support seat. An electromagnet (4171) is fixedly installed at the bottom end of the limiting top rod (417). When the electromagnet is energized, it can attract the support seat and make the limiting top rod (417) move upward to reach the inclined groove (4121).

9. The intelligent grinding device for hardware according to claim 1, wherein, The damping component (414) includes: A damping box (4141), fixed on the guide rod (415) and filled with a liquid medium inside; A piston (4142), sleeved inside the damping box (4141), with a connecting rod (4146) fixedly installed at one end and fixedly installed with the guide frame (413); damping holes (4144) and one-way valves (4143) are arranged at the end of the piston (4142); A position detection component (4145), arranged outside the damping box (4141) and used to detect the position of the piston (4142).

10. A grinding process for the intelligent grinding device of the hardware part as described in claim 1, characterized in that, It includes the following steps: S1. The displacement adjustment component (4) and the driving component (3) center and clamp both ends of the steel part (7), and the driving component (3) is used to rotate the steel part (7); S2. The grinding component (6) grinds the outer side of the steel part (7), and the rotation direction of the steel part (7) is the same as the grinding direction of the grinding component (6); S3. The transmission component (5) is used to make the grinding component (6) reciprocate left and right along the steel part (7) to ensure comprehensive grinding of the outer side of the steel part (7); S4. After the grinding component (6) encounters a convex defect on the outer side of the steel part (7), the driving component (3) will weaken the power output to the steel part (7), forcing the convex on the outer side of the steel part (7) to continuously move towards the grinding component (6). By grinding the convex with the grinding component (6), the convex defect is finally eliminated.

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