Arc internal contour grinding device

Abstract

The application relates to the technical field of inner arc grinding, in particular to a circular arc inner contour grinding device which comprises a cabinet assembly, two grinding assemblies, two clamping assemblies, a transfer assembly and two transmission pipeline assemblies. The cabinet assembly comprises a cabinet. The grinding assembly comprises a power part, a feeding part, an adjusting part and a grinding wheel. The fixed end of the feeding part is arranged in the cabinet, the fixed end of the power part is arranged at the free end of the feeding part, the fixed end of the adjusting part is arranged at the output end of the power part, and the grinding wheel is arranged at the free end of the adjusting part. The transmission pipeline assembly is installed on the cabinet. The clamping assembly comprises a clamping part and a rotary power part. The fixed end of the clamping part is arranged on the transmission pipeline assembly. The application can realize automatic clamping of workpieces, reduce the introduction of positioning cumulative errors and guarantee the machining consistency of products in the same batch.

Description

Technical Field

[0001] This application relates to the field of internal arc grinding technology, and in particular to an arc internal contour grinding device. Background Technology

[0002] In the fields of precision machinery, hydraulic components, precision bearings and fluid pipeline parts, the inner wall of a large number of tubular workpieces needs to be machined into two sets of independent arc inner contours. The two arc inner contours are distributed at different axial positions inside the tube, and the requirements for dimensional accuracy, contour roundness, surface roughness and relative position accuracy are extremely high. It is a key processing structure to ensure the assembly accuracy and operational stability of the product.

[0003] Currently, Chinese utility model patent application with publication number CN221364066U and publication date of July 19, 2024 proposes a dual-station part internal hole grinding mechanism, which includes the following structure: a dustproof frame, two grinding mechanisms and two auxiliary mechanisms. A first station and a second station are provided in front of the dustproof frame. The two grinding mechanisms are symmetrically arranged in the middle of the inner side of the dustproof frame, and the two auxiliary mechanisms are symmetrically arranged at the edge of the dustproof frame.

[0004] The grinding mechanism and auxiliary mechanism are separated into two workstations. The grinding mechanism performs grinding operations on a large surface area, while the auxiliary mechanism has the capability for grinding small areas and regions. It can be used for efficient grinding operations to achieve the grinding treatment of parts.

[0005] Regarding the aforementioned technologies, when faced with the specific working condition of "processing two sets of independent circular arc inner contours within the same pipe fitting," the limitations of the mechanism's motion freedom and tooling design mean that a single clamping operation can only complete the processing of a single area. This necessitates manual intervention for secondary workpiece repositioning and repeated clamping. This process not only extends non-processing time but also introduces additional cumulative positioning errors due to the uncertainty of human operation, making it difficult to guarantee the processing consistency and repeatability accuracy of products in the same batch. Summary of the Invention

[0006] This application provides a circular arc inner contour grinding device, which realizes automatic workpiece clamping, reduces the introduction of cumulative positioning errors, and ensures the processing consistency of products in the same batch.

[0007] A circular arc inner contour grinding device, comprising:

[0008] The equipment includes a cabinet assembly, two grinding assemblies, two clamping assemblies, a transfer assembly, and two transmission pipeline assemblies.

[0009] The cabinet assembly includes a cabinet;

[0010] The grinding assembly includes a power unit, a feed unit, an adjustment unit, and a grinding wheel. The fixed end of the feed unit is located inside the cabinet, the fixed end of the power unit is located at the free end of the feed unit, the fixed end of the adjustment unit is located at the output end of the power unit, and the grinding wheel is located at the free end of the adjustment unit.

[0011] The transmission pipeline assembly is installed on the cabinet;

[0012] The clamping assembly includes a clamping part and a rotating power part. The fixed end of the clamping part is disposed on the transmission pipe assembly, and the fixed end of the rotating power part is disposed on the free end of the clamping part.

[0013] The transfer component is installed outside the cabinet component.

[0014] By adopting the above technical solution, the workpiece is placed into the first transmission pipe assembly, allowing it to move within the assembly and contact the clamping part. The free end of the clamping part is extended to contact the workpiece, pushing the pipe into contact with the wall of the transmission pipe assembly, thus clamping the workpiece. The free end of the rotary power unit contacts the workpiece surface. Then, the feed and adjustment parts of the grinding assembly are operated sequentially, causing the grinding wheel to contact the workpiece. The power and rotary power units are controlled to operate, with the power unit driving the adjustment part and grinding wheel to oscillate back and forth. The free end of the rotary power unit contacts the outer circumference of the workpiece, causing the workpiece to rotate, achieving the grinding of the first arc inner contour, enabling fine grinding of the arc inner contour. After grinding, the adjustment part is controlled to work in reverse, the power and rotary power units are shut off, the feed part is controlled to work in reverse, and the clamping part is controlled to work in reverse, allowing the workpiece to move along the first transmission pipe assembly to the transfer assembly. The transfer assembly places the workpiece into the second transmission pipe assembly, achieving the grinding of the second arc inner contour. After grinding, the workpiece moves along the second transmission pipe assembly to be collected. It enables automatic workpiece clamping, eliminating the need for secondary positioning and repeated clamping, shortening processing time, avoiding additional cumulative positioning errors introduced by the uncertainty of human operation, and ensuring the processing consistency of products in the same batch.

[0015] Optionally, the adjustment unit includes a power component, a power ball, a tool holder, and a support. The support is disposed at the output end of the power component, the fixed end of the power component is vertically disposed on the support, the power ball is disposed at the free end of the power component, the tool holder has a power groove, the power ball is slidably disposed in the power groove, the tool holder is rotatably disposed on the support, and the grinding wheel is disposed on the tool holder.

[0016] By adopting the above technical solution, when the free end of the power component is working, it drives the power ball to move along the height direction and simultaneously move along the power groove. The power ball drives the tool holder to swing, oscillating around its connection point with the support, thereby causing the grinding wheel to deflect at an angle. This deflection action allows the grinding wheel to adaptively conform to the arc-shaped inner contour on the inner circumference of the workpiece. Combined with the axial displacement provided by the feed unit, the spatial position of the grinding wheel can be flexibly adjusted, thereby achieving precise and efficient machining of the arc-shaped inner contour at different depths and positions within the workpiece.

[0017] Optionally, the adjusting part further includes a limiting bolt, which is threadedly connected to the bracket and can abut against the tool holder.

[0018] By adopting the above technical solution, and utilizing the threaded fit between the limit bolt and the bracket, the operator can rotate the bolt to tighten it against the surface of the tool holder, thereby rigidly locking it after the tool holder position is adjusted, making the grinding process more stable.

[0019] Optionally, the transmission pipeline assembly includes a processing pipe with a bending groove inside, and the fixed end of the clamping part is disposed on the processing pipe, directly opposite the opening end of the bending groove.

[0020] By adopting the above technical solution, after the workpiece enters the bending groove, it enters the bending groove under the obstruction of the clamping part. After the free end of the clamping part contacts the outer circumference of the workpiece, it pushes the workpiece to contact the two side walls of the processing tube corresponding to the bending groove, thereby forming a stable radial clamping and positioning of the workpiece at multiple contact points, which facilitates the subsequent processing of the inner arc contour.

[0021] Optionally, the clamping part includes a clamping power component, a clamping plate, a first baffle, a transmission arm, a limiting rod, and a second baffle. The fixed end of the clamping power component is disposed on the processing tube, the clamping plate is disposed on the free end of the clamping power component, one end of the first baffle is disposed on one end of the clamping plate, the limiting rod is disposed on the processing tube, one end of the transmission arm is rotatably disposed on the other end of the first baffle, a transmission groove is formed on the transmission arm, the limiting rod is relatively slidably disposed in the transmission groove, and the second baffle is disposed on the other end of the transmission arm.

[0022] By adopting the above technical solution, during workpiece processing, assuming the workpiece held by the clamping plate is the first workpiece, the second workpiece is located between the first and second baffles, contacting the first baffle. The third workpiece contacts the second workpiece, the fourth workpiece contacts the third workpiece, and so on. After processing, the free end of the clamping power component is controlled to move away from the first workpiece. The clamping power component drives the clamping plate, the first baffle, and one end of the transmission arm to move. The transmission arm swings under the limiting action of the limiting rod, causing the second baffle to swing closer to the first workpiece, separating the second and third workpieces. When the first baffle moves away from the movement trajectory of the second workpiece, it enters the bending groove downwards under the pushing action of the second baffle, pushing the first workpiece to the straight section of the processing tube and falling down along the processing tube. The free end of the clamping power component is controlled to move in the opposite direction, causing the second baffle to swing in the opposite direction. When it moves away from the movement trajectory of the third workpiece, the third workpiece moves downwards under the action of the subsequent workpiece gravity, contacting the first baffle, and the clamping plate clamps the second workpiece. This enables automatic separation, conveying, and continuous cyclic processing of workpieces.

[0023] Optionally, the clamping assembly further includes a power push plate, the fixed end of which is disposed on the processing tube, and the free end of which is slidably disposed in the bending groove.

[0024] By adopting the above technical solution, when the clamping power component moves to the preset position, the power push plate is controlled to work, so that it contacts and drives the processed workpiece to move into the straight section of the processing tube, and the power push plate is quickly reset. Then, the movement of the clamping power component is controlled again to allow the next workpiece to enter the bending groove, avoiding the situation where the next workpiece cannot successfully push the previous workpiece into the straight section of the processing tube.

[0025] Optionally, the transfer assembly includes an automatic reversing tube, an intermediate tube, a conveying tube, a lifting unit, a transfer power component, and a transfer push plate. The fixed end of the automatic reversing tube is disposed on the cabinet, the intermediate tube is disposed on the cabinet, the fixed end of the lifting unit is disposed on the cabinet, the conveying tube is disposed on the free end of the lifting unit, the fixed end of the transfer power component is disposed on the top of the cabinet, and the transfer push plate is disposed on the free end of the transfer power component.

[0026] By adopting the above technical solution, the workpiece moving out of the first processing tube enters the automatic reversing tube. The automatic reversing tube rotates by °, and by utilizing the inertia of the workpiece's movement or by automatically raising one end of the automatic reversing tube, the workpiece enters the transfer tube through the intermediate tube. The lifting part drives the transfer tube and the workpiece to move upward to the preset position. The free end of the control transfer power component extends, causing it to drive the transfer push plate to move. The transfer push plate contacts and drives the workpiece to move, allowing the workpiece to enter the second transfer pipe assembly, thus realizing the transfer of the workpiece and facilitating the processing of the second arc inner contour.

[0027] Optionally, it also includes four auxiliary clamping assemblies, each of which includes an auxiliary power component, a swing arm, and a contact wheel. The fixed end of the auxiliary power component is disposed on the cabinet, the swing arm is disposed on the free end of the auxiliary power component, and the contact wheel is disposed on the swing arm.

[0028] By adopting the above technical solution, after the workpiece is clamped by the clamping part, the outer circumferential surface of the workpiece contacts the pipe wall of the transmission pipeline assembly. The auxiliary power component is controlled to work, causing it to drive the swing arm to swing. The swing arm drives the contact wheel to swing and contact one end face of the workpiece, causing the workpiece to move so that the other end face of the workpiece contacts the pipe wall of the transmission pipeline assembly, thereby achieving precise positioning of the workpiece and ensuring processing accuracy.

[0029] Optionally, the auxiliary clamping assembly further includes an adjusting bolt, a nut, and a movable seat. The swing arm has an adjusting groove, the bolt head of the adjusting bolt is inserted into the adjusting groove, the adjusting bolt passes through the movable seat, the movable seat is slidably disposed on the swing arm, the contact wheel is disposed on the swing arm, and the nut is threadedly connected to the adjusting bolt and abuts against the movable seat to lock the position of the movable seat.

[0030] By adopting the above technical solution, the position of the contact wheel is adjusted according to the diameter of the workpiece, the nut is loosened, the moving seat is moved, and the moving seat drives the adjusting bolt to move along the adjusting groove so that the contact wheels on both sides match the position of the workpiece. The nut is then tightened. The operation is convenient and the positioning is stable, which can adapt to the clamping of workpieces of different diameters.

[0031] Optionally, it also includes a feeding assembly, which includes a feeding rack, two feeding conveyor belts, several feeding rods, a feeding power component, and a feeding pusher plate. The feeding rack is located on one side of the cabinet, the feeding conveyor belts are mounted on the feeding rack, the feeding rods are mounted on the conveyor belts of the feeding conveyor belts, the fixed end of the feeding power component is located at the upper end of the feeding rack, and the feeding pusher plate is located at the free end of the feeding power component.

[0032] By adopting the above technical solution, the workpiece is placed on two feeding rods. When the feeding conveyor belt is working, it drives the feeding rods to move, and the feeding rods drive the workpiece to move until the workpiece moves to the preset position. Then, the feeding power component is controlled to work. The free end of the feeding power component drives the feeding push plate to move. After the feeding push plate contacts the workpiece, it drives the workpiece to move into the first transmission pipe assembly, thus realizing feeding and improving the efficiency and continuity of feeding.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. This invention improves the efficiency and continuity of feeding by employing a feeding component, a transfer component, a transmission pipeline component, and a clamping component, thereby achieving automatic workpiece clamping without the need for secondary positioning and repeated clamping, shortening processing time, avoiding additional positioning cumulative errors introduced by the uncertainty of human operation, and ensuring the processing consistency of products in the same batch.

[0035] 2. In this invention, the workpiece axis is perpendicular to the length of the feeding tube during loading, significantly improving loading smoothness. Furthermore, the workpiece's outer circumference is contacted during loading, avoiding end-face contact and converting surface contact into line contact, reducing the contact area and minimizing collision wear. During the first grinding operation, the first reversing tube achieves a 90° reversal of the workpiece, making the workpiece axis perpendicular to the length of the processing tube, facilitating the first arc inner contour grinding. After the first grinding, the automatic reversing tube and the second reversing tube achieve a 180° reversal of the workpiece, facilitating the second arc inner contour grinding. For workpieces with symmetrical arc structures, this step-by-step reversing strategy allows the grinding modules and clamping modules of the two stations to use completely consistent mechanical architecture and control logic, greatly simplifying the equipment manufacturing process and strongly supporting the standardized design, debugging, and maintenance of the control system.

[0036] 3. This invention uses a clamping power component to drive the clamping plate to move, so that after contacting the workpiece, it pushes the workpiece to contact the pipe wall corresponding to the bending groove. After the contact wheel contacts the workpiece, it pushes the workpiece to contact the pipe wall corresponding to the bending groove, thus achieving precise positioning of the workpiece and facilitating subsequent grinding processing. The first baffle and the second baffle are used to realize intermittent unloading of the workpiece. The second baffle also plays the role of pushing the workpiece to move. The movement of the subsequent workpiece pushes the processed workpiece down along the processing tube, which facilitates the workpiece to enter the next process. Attached Figure Description

[0037] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the internal structure of the cabinet after it is opened, according to an embodiment of this application. Figure 1 ;

[0039] Figure 3 This is a partial three-dimensional structural diagram of the grinding assembly and the transmission pipeline assembly according to an embodiment of this application;

[0040] Figure 4 This is a partially cut-away perspective view of the grinding assembly according to an embodiment of this application;

[0041] Figure 5 This is a partially cut-out perspective view of the auxiliary clamping component according to an embodiment of this application;

[0042] Figure 6This is a schematic diagram of the internal structure of the processing tube after partial cross-section according to an embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the internal structure of the cabinet after it is opened, according to an embodiment of this application. Figure 2 ;

[0044] Figure 8 This is a partially cut-out three-dimensional structural diagram of the automatic commutator according to an embodiment of this application;

[0045] Figure 9 This is a partially cut-out three-dimensional structural diagram of the feeding component according to an embodiment of this application.

[0046] Figure label:

[0047] 100. Rack assembly; 110. Rack; 120. Enclosure; 130. Support panel;

[0048] 200. Grinding assembly; 210. Power unit; 220. Feed unit; 230. Adjustment unit; 231. Power component; 232. Power ball; 233. Tool holder; 234. Support; 235. Power groove; 236. Limit bolt; 237. Protective frame; 240. Grinding wheel;

[0049] 300. Clamping assembly; 310. Clamping part; 311. Clamping power component; 312. Clamping plate; 313. First baffle; 314. Transmission arm; 315. Limiting rod; 316. Second baffle; 317. Transmission groove; 318. Mounting groove; 320. Rotational power unit; 321. Friction wheel; 322. Rotational power component; 330. Power push plate;

[0050] 400. Transfer assembly; 410. Automatic reversing tube; 411. Tube body; 412. Anti-derailment rod; 413. Reversing power component; 414. Drive shaft; 415. Ball housing; 416. Transmission ball; 417. Adjusting power component; 418. Adjusting mounting rod; 420. Intermediate tube; 430. Conveyor tube; 440. Lifting unit; 450. Transfer power component; 460. Transfer push plate; 470. Reinforcing frame;

[0051] 500. Transmission pipe assembly; 510. Processing pipe; 511. Bending groove; 512. Processing groove; 513. Pressing groove; 514. Observation window; 520. Straight pipe; 530. Reversing pipe; 540. Vertical pipe; 550. Bending pipe; 560. Discharge pipe; 570. Pipe support;

[0052] 600, Auxiliary clamping assembly; 610, Auxiliary power component; 620, Swing arm; 621, Adjustment groove; 630, Contact wheel; 640, Adjustment bolt; 650, Nut; 660, Moving base;

[0053] 700. Feeding assembly; 710. Feeding rack; 711. Through slot; 712. Cavity; 720. Feeding conveyor belt; 730. Feeding rod; 740. Feeding power component; 750. Feeding push plate; 760. Mounting base; 770. Support plate; 780. Feeding pipe; 790. Stop block;

[0054] 800, Controller;

[0055] 900. Material collection assembly; 910. Material collection power component; 920. Material collection push plate; 930. Material collection trough; 940. Material collection box. Detailed Implementation

[0056] The following combination Figures 1 to 9 This application will be described in further detail.

[0057] refer to Figure 1 and 2 This embodiment provides a circular arc inner contour grinding device, the overall structure of which includes: a cabinet assembly 100, two grinding assemblies 200, two clamping assemblies 300, a transfer assembly 400, two transmission pipe assemblies 500, four auxiliary clamping assemblies 600, a feeding assembly 700, a controller 800, and a material collection assembly 900. The cabinet assembly 100 and the feeding assembly 700 are installed in a predetermined position in the factory, and the grinding assemblies 200 and the auxiliary clamping assemblies 600 are installed inside the cabinet assembly 100. The transfer component 400, the controller 800, and the material collection component 900 are installed outside the cabinet component 100. The transmission pipeline component 500 is installed on the cabinet component 100. The clamping component 300 is installed inside the transmission pipeline component 500. The grinding component 200, the clamping component 300, the transfer component 400, the auxiliary clamping component 600, the feeding component 700, and the material collection component 900 are electrically connected to the output terminal of the controller 800.

[0058] refer to Figure 2 The cabinet assembly 100 includes a cabinet 110, two enclosures 120, and a support plate 130. The enclosures 120 are installed inside the cabinet 110, and the support plate 130 is installed in the middle of one outer wall of the cabinet 110. The controller 800 is installed on the upper side of the top plate of the cabinet 110. The transfer assembly 400 is installed at one end of the support plate 130, the material collection assembly 900 is installed at the other end of the support plate 130, the transmission pipe assembly 500 is installed on the cabinet 110, the grinding assembly 200 is installed inside the cabinet 110, and the auxiliary clamping assembly 600 is installed on the enclosure 120.

[0059] refer to Figure 3 and 4The grinding assembly 200 includes a power unit 210, a feed unit 220, an adjustment unit 230, and a grinding wheel 240. The fixed end of the feed unit 220 is installed inside the cabinet 110, the fixed end of the power unit 210 is installed at the free end of the feed unit 220, the fixed end of the adjustment unit 230 is installed at the output end of the power unit 210, and the grinding wheel 240 is installed at the free end of the adjustment unit 230. The power unit 210, the feed unit 220, and the adjustment unit 230 are electrically connected to the output end of the controller 800.

[0060] The feed unit 220 can be a dual-axis linear motion mechanism, such as two vertically distributed linear modules, cylinders, hydraulic cylinders, etc., or it can be driven by a motor and lead screw.

[0061] The power unit 210 uses a motor and a servo motor, which, under the control of the controller 800, reciprocates within a certain angle range, causing the grinding wheel 240 to swing back and forth around the center position of the inner arc contour, thus finely grinding the inner arc contour.

[0062] refer to Figure 4 The adjustment unit 230 includes a power component 231, a power ball 232, a tool holder 233, a bracket 234, two limiting bolts 236, and a protective frame 237. The bracket 234 is installed at the output end of the power unit 210. The fixed end of the power component 231 is vertically installed on the bracket 234. The power ball 232 is installed at the free end of the power component 231. The tool holder 233 has a power groove 235. The power ball 232 is slidably disposed in the power groove 235. The tool holder 233 is rotatably connected to the bracket 234. The grinding wheel 240 is installed on the tool holder 233. The limiting bolts 236 are threadedly connected to the bracket 234 and can abut against the tool holder 233. The protective frame 237 is detachably installed on the tool holder 233, with an open front end covering both sides of the grinding wheel 240. The power component 231 is electrically connected to the output end of the controller 800.

[0063] The power component 231 can be a mechanism that achieves linear motion, such as a cylinder or an electric push rod.

[0064] refer to Figure 3 and 4Based on the workpiece dimensions, first rotate the limiting bolt 236 to adjust it to the preset position. After the workpiece is clamped, the controller 800 controls the feed unit 220 to work, causing it to drive the power unit 210, the adjustment unit 230, and the grinding wheel 240 to move, so that the grinding wheel 240 extends into the workpiece. When the controller controls the free end of the power unit 231 to work, it drives the power ball 232 to move along the height direction and simultaneously move along the power groove 235. The power ball 232 drives the tool holder 233 to swing around its connection point with the support 234. The tool holder 233 drives the protective frame 237 and the grinding wheel 240 to swing, causing the grinding wheel 240 to deflect at an angle. The grinding wheel 240 can adaptively conform to the inner arc contour on the inner circumference of the workpiece. At this time, the limiting bolt 236 abuts against the tool holder 233. The controller controls the power unit 210 to rotate back and forth, so that the grinding wheel 240 finely grinds the inner arc contour.

[0065] refer to Figure 3 and 4 The axial displacement provided by the feed unit 220 allows for flexible adjustment of the spatial position of the grinding wheel 240, thereby enabling precise and efficient machining of the inner arc contours of the workpiece at different depths and positions. The operator can rotate the bolt 236 to tighten it against the surface of the tool holder 233, thereby rigidly locking it after the tool holder position is adjusted, making the grinding process more stable.

[0066] refer to Figure 5 The auxiliary clamping assembly 600 includes an auxiliary power component 610, a swing arm 620, a contact wheel 630, an adjusting bolt 640, a nut 650, and a movable seat 660. The fixed end of the auxiliary power component 610 is installed inside the housing 120, and its output shaft passes through the housing wall of the housing 120. The swing arm 620 is installed on the free end of the auxiliary power component 610. An adjusting groove 621 is provided on the swing arm 620. The bolt head of the adjusting bolt 640 is inserted into the adjusting groove 621. The adjusting bolt 640 passes through the movable seat 660, and the movable seat 660 is slidably disposed on the swing arm 620. The contact wheel 630 is installed on the swing arm 620. The nut 650 is threadedly connected to the adjusting bolt 640 and abuts against the movable seat 660 to lock the position of the movable seat 660. The auxiliary power component 610 is electrically connected to the output end of the controller 800.

[0067] The auxiliary power component 610 can be a motor or a servo motor.

[0068] refer to Figure 5According to the diameter of the workpiece, adjust the position of the contact wheel 630, loosen the nut 650, move the moving seat 660, and the moving seat 660 drives the adjusting bolt 640 to move along the adjusting groove 621 so that the contact wheels 630 on both sides match the position of the workpiece. Tighten the nut 650. The operation is convenient and the positioning is stable, which can adapt to the clamping of workpieces of different diameters.

[0069] refer to Figure 5 The controller 800 controls the auxiliary power component 610 to work, which drives the swing arm 620 to swing. The swing arm 620 drives the adjusting bolt 640, nut 650, moving seat 660 and contact wheel 630 to swing, so that the contact wheel 630 swings to contact one end face of the workpiece, thereby achieving precise positioning of the workpiece and ensuring processing accuracy.

[0070] refer to Figure 2 The transmission pipeline assembly 500 includes a processing pipe 510, a straight pipe 520, a reversing pipe 530, a vertical pipe 540, a bent pipe 550, a discharge pipe 560, and a pipe support 570. The straight pipe 520, the reversing pipe 530, the vertical pipe 540, the bent pipe 550, and the processing pipe 510 are connected in sequence. The bent pipe 550 is installed on the top plate of the cabinet 110. One end of the pipe support 570 is installed on the top plate of the cabinet 110, and the other end is installed on the straight pipe 520. The discharge pipe 560 is installed on the side wall of the cabinet 110. The cabinet 110 has a through slot corresponding to the discharge pipe 560. The reversing pipe 530 achieves a 90° reversal. The clamping assembly 300 is installed on the processing pipe 510.

[0071] refer to Figure 3 and 6 The processing tube 510 has a bending groove 511, a processing groove 512, two clamping grooves 513 and several observation windows 514. The bending groove 511, the processing groove 512, the clamping groove 513 and the observation windows 514 are connected to the internal cavity of the processing tube 510. The bending groove 511 is used for positioning the workpiece, the processing groove 512 is used to allow the grinding wheel 240 to enter the workpiece, and the clamping groove 513 is used to allow the contact wheel 630 to press the workpiece.

[0072] The straight pipe 520, the reversing pipe 530, the vertical pipe 540, and the bent pipe 550 may also have the observation window 514.

[0073] refer to Figure 6The clamping assembly 300 includes a clamping part 310, a rotating power part 320, and a power push plate 330. The fixed end of the clamping part 310 is mounted on the processing tube 510, the fixed end of the rotating power part 320 is mounted on the free end of the clamping part 310, and the fixed end of the power push plate 330 is mounted on the processing tube 510. The clamping part 310, the rotating power part 320, and the power push plate 330 are electrically connected to the output terminal of the controller 800.

[0074] refer to Figure 6 The clamping part 310 includes a clamping power member 311, a clamping plate 312, a first baffle 313, a transmission arm 314, a limiting round rod 315, and a second baffle 316. The fixed end of the clamping power member 311 is mounted on the processing tube 510. The clamping plate 312 is mounted on the free end of the clamping power member 311, directly opposite the opening end of the bending groove 511. One end of the first baffle 313 is mounted on one end of the clamping plate 312. The limiting round rod 315 is mounted on the processing tube 510. One end of the transmission arm 314 is mounted on the free end of the clamping power member 311, directly opposite the opening end of the bending groove 511. One end of the first baffle 313 is mounted on one end of the clamping plate 312. The limiting round rod 315 is mounted on the processing tube 510. The other end of the first baffle 313 is rotatably connected to the transmission arm 314, which has a transmission groove 317. The limiting rod 315 is relatively slidably disposed in the transmission groove 317. The other end of the transmission arm 314 is mounted on the second baffle 316. The end of the clamping plate 312 away from the first baffle 313 has an installation groove 318. The rotating power unit 320 is mounted on the clamping plate 312 and is located in the installation groove 318. The clamping power unit 311 is electrically connected to the output end of the controller 800.

[0075] The clamping power component 311 can be a linear movement mechanism such as a cylinder or an electric push rod.

[0076] refer to Figure 6 The rotating power unit 320 includes a friction wheel 321 and a rotating power component 322. The fixed end of the rotating power component 322 is mounted on the clamping plate 312, and the friction wheel 321 is mounted on the free end of the rotating power component 322. The rotating power component 322 is electrically connected to the output end of the controller 800.

[0077] The rotating power component 322 is an electric motor.

[0078] The power push plate 330 adopts a combination of a linear movement mechanism and a push plate.

[0079] The rotating power unit 320 can take other forms to achieve workpiece rotation.

[0080] refer to Figure 6During workpiece processing, assuming the workpiece held by clamping plate 312 is the first workpiece, the second workpiece is located between the first baffle 313 and the second baffle 316, contacting the first baffle 313. The third workpiece contacts the second workpiece, the fourth workpiece contacts the third workpiece, and so on. After processing, the controller controls the free end of the clamping power component 311 to move away from the first workpiece. The controller controls the clamping power component 311 to drive the clamping plate 312, the first baffle 313 and one end of the transmission arm 314 to move. The transmission arm 314 swings under the limiting action of the limiting rod 315. The transmission arm 314 drives the second baffle 316 to swing towards the first workpiece, separating the second workpiece from the third workpiece. When the first baffle 313 moves away from the movement trajectory of the second workpiece, it enters the bending groove 511 downward under the pushing action of the second baffle 316, pushing the first workpiece to the straight section of the processing tube 510 and falling down along the processing tube 510. The free end of the control clamping power component 311 moves in the opposite direction, causing the second baffle 316 to swing in the opposite direction. When it deviates from the trajectory of the third workpiece, the third workpiece moves downward under the gravity of the subsequent workpiece, contacting the first baffle 313. The clamping plate 312 clamps the second workpiece, and the friction wheel 321 contacts the workpiece, causing the second workpiece to contact the two side walls of the processing tube 510 corresponding to the bending groove 511. This forms a stable radial clamping and positioning of the workpiece at multiple contact points. This achieves automatic separation, conveying, and continuous cyclic processing of the workpiece.

[0081] refer to Figure 6 The controller moves the clamping power component 311 to a preset position. At this time, the second workpiece is still blocked by the first baffle 313, and the clamping plate 312 and friction wheel 321 are away from the movement path of the first workpiece. The controller controls the power push plate 330 to work, so that it contacts and drives the processed workpiece to move into the straight section of the processing tube 510, and the power push plate 330 quickly returns to its original position. Then, the controller controls the clamping power component 311 to move so that the next workpiece enters the bending groove 511, avoiding the situation where the next workpiece cannot successfully push the previous workpiece into the straight section of the processing tube 510.

[0082] refer to Figure 7The transfer assembly 400 includes an automatic reversing pipe 410, an intermediate pipe 420, a conveying pipe 430, a lifting part 440, a transfer power component 450, a transfer push plate 460, and a reinforcing frame 470. The fixed end of the automatic reversing pipe 410 is mounted on the support plate 130, the intermediate pipe 420 is mounted on the support plate 130, the fixed end of the lifting part 440 is mounted on the support plate 130, the conveying pipe 430 is mounted on the free end of the lifting part 440, the reinforcing frame 470 is mounted on one end of the top plate of the cabinet 110, the fixed end of the transfer power component 450 is mounted on the reinforcing frame 470, and the transfer push plate 460 is mounted on the free end of the transfer power component 450. The automatic reversing pipe 410, the lifting part 440, and the transfer power component 450 are electrically connected to the output end of the controller 800.

[0083] The lifting unit 440 and the transfer power component 450 can adopt linear motion mechanisms such as cylinders, electric push rods, linear modules and hydraulic rods. The lifting unit 440 is preferably a linear module and the transfer power component 450 is preferably an electric push rod.

[0084] refer to Figure 8 The automatic reversing tube 410 includes a tube body 411, an anti-detachment rod 412, a reversing power component 413, a drive shaft 414, a ball housing 415, a drive ball 416, an adjusting power component 417, and an adjusting mounting rod 418. The fixed end of the reversing power component 413 is mounted on the support plate 130. The drive shaft 414 is mounted on the output shaft of the reversing power component 413. One end of the adjusting mounting rod 418 is mounted on the drive shaft 414. The fixed end of the adjusting power component 417 is mounted on the adjusting mounting rod 418. At the other end of 8, the transmission ball 416 is installed at the free end of the adjusting power component 417, the tube body 411 is rotatably connected to the transmission shaft 414, the anti-detachment rod 412 is installed at one end of the tube body 411, the ball shell 415 is installed at the other end of the tube body 411, the transmission ball 416 is disposed inside the ball shell 415, the size of the ball shell 415 is larger than the size of the transmission ball 416, and the reversing power component 413 and the adjusting power component 417 are electrically connected to the output terminal of the controller 800.

[0085] The commutation power component 413 can be a motor or a servo motor.

[0086] The adjusting power component 417 can be an electric push rod or a cylinder.

[0087] refer to Figure 7 and 8After the workpiece is processed, it slides from the processing tube 510 into the discharge tube 560, enters the tube body 411 from the discharge tube 560, contacts the anti-detachment rod 412, and the controller 800 controls the reversing power component 413 to rotate 90°, realizing the automatic reversing tube 410 (except for the fixed end of the reversing power component 413) to rotate 90°, so that the tube body 411 is directly facing the intermediate tube 420. The controller 800 controls the free end of the adjusting power component 417 to extend, and the adjusting power component 417 drives the transmission ball 416 to move inside the ball shell 415. Since the size of the ball shell 415 is larger than that of the transmission ball 416, the ball body 416 moves within the ball shell 415. The transmission ball 416 drives the ball shell 415 to swing relative to the transmission ball 416. The ball shell 415 drives the tube body 411 and the anti-detachment rod 412 to swing, so that the end of the tube body 411 near the anti-detachment rod 412 is higher than the other end, allowing the workpiece to smoothly enter the intermediate tube 420. The intermediate tube 420 and the conveying tube 430 are in a converging shape. The size of the small end (end) of the intermediate tube 420 is larger than the size of the large end (front) of the conveying tube 430, allowing the workpiece to smoothly enter the conveying tube 430 and contact the two side walls of the small end of the conveying tube 430, so that the conveying tube 430 clamps the workpiece. The controller 800 controls the reversing power component 413 and the adjusting power component 417 to work in reverse, so that the tube body 411 returns to its original position. The controller 800 controls the lifting unit 400 to work, driving the transmission pipe 430 to move upward to the preset position. The controller 800 controls the free end of the transfer power component 450 to extend, so that the transfer push plate 460 contacts and drives the workpiece to move, so that it enters the second transmission pipe assembly 500. The controller 800 controls the transfer power component 450 and the lifting unit 400 to work in reverse and reset.

[0088] refer to Figure 2 and 7 Under the pushing action of the transfer pusher plate 460, the workpiece moves along the straight pipe 520, the reversing pipe 530, the vertical pipe 540 and the bending pipe 550. Under the action of the reversing pipe 530, it achieves a 90° reversal and enters the processing pipe 510 to contact the workpiece in front.

[0089] refer to Figure 2 and 7 After the first grinding operation, the workpiece is reversed 180° using the automatic reversing tube 410 and the second reversing tube 530, facilitating the second arc inner contour grinding. For workpieces with symmetrical arc structures, this step-by-step reversing strategy allows the grinding modules 200 and clamping modules 300 in the front and rear stations to adopt completely identical mechanical architecture and control logic, significantly simplifying the equipment manufacturing process and strongly supporting the standardized design, debugging, and maintenance of the control system.

[0090] refer to Figure 9The feeding assembly 700 includes a feeding rack 710, two feeding conveyor belts 720, several feeding rods 730, a feeding power component 740, a feeding push plate 750, a mounting base 760, a support plate 770, a feeding pipe 780, and a stop block 790. The feeding rack 710 is located on one side of the cabinet 110. The feeding rack 710 has a U-shaped structure with two cavities 712 and four through slots 711. The through slots 711 connect to the cavities 712. The feeding conveyor belts 720 are mounted on the feeding rack 710, with both ends of the conveyor belt passing through the through slots 711. One side of the conveyor belt is located in the cavity 712. The feeding rods 730 are mounted on the feeding conveyor belts 720. On the conveyor belt, the mounting base 760 is mounted on the upper end of the feeding rack 710, the fixed end of the feeding power component 740 is mounted on the mounting base 760, the feeding push plate 750 is disposed at the free end of the feeding power component 740, the stop block 790 is mounted on the lower part of the feeding rack 710, the support plate 770 is mounted on the lower part of the stop block 790, the feeding pipe 780 is mounted on the lower part of the feeding rack 710, the upper side of its bottom plate is flush with the upper side of the support plate 770, the feeding pipe 780 abuts against the support plate 770, the feeding pipe 780 is inclined, and the feeding conveyor belt 720 and the feeding power component 740 are electrically connected to the controller 800.

[0091] The feeding conveyor belt 720 adopts a conventional conveyor belt mechanism.

[0092] The feeding power component 740 can be an electric push rod or a cylinder.

[0093] refer to Figure 9 The workpiece is placed on the feeding pipe 780, allowing it to slide down onto the support plate 770 and contact the stop block 790. The controller 800 controls the feeding conveyor belt 720 to operate, causing it to drive the feeding rod 730. The feeding rod 730 passes upward through the gap between the support plate 770 and the feeding rack 710, contacts and drives the workpiece upward to a preset position. The controller 800 then controls the feeding power component 740 to operate. The free end of the feeding power component 740 drives the feeding push plate 750 to move. After the feeding push plate 750 contacts the workpiece, it drives the workpiece to move into the first transmission pipe assembly 500, thus realizing feeding and improving the efficiency and continuity of feeding.

[0094] refer to Figure 9During loading, the workpiece axis is perpendicular to the length of the feed tube 780, significantly improving loading smoothness. Furthermore, the workpiece's outer circumference is contacted during loading, avoiding end-face contact and converting surface contact into line contact, thus reducing the contact area and minimizing collision wear. During the first grinding operation, the first reversing tube 530 achieves a 90° reversal of the workpiece, making the workpiece axis perpendicular to the length of the processing tube 510, facilitating the first arc-shaped inner contour grinding.

[0095] refer to Figure 7 The material collection assembly 900 includes a material collection power component 910, a material collection push plate 920, a material collection trough 930, and a material collection box 940. The fixed end of the material collection power component 910 is installed on the support plate 130, the material collection push plate 920 is installed on the free end of the material collection power component 910, the material collection trough 930 is installed on the support plate 130, and the material collection box 940 is installed on one end of the cabinet 110 near the loading rack 710. The material collection power component 910 is electrically connected to the controller 800.

[0096] The material collection power component 910 can be an electric push rod or a cylinder.

[0097] refer to Figure 7 The precision-ground workpiece slides out from the second discharge pipe 560 and enters the collection trough 930. The controller 800 controls the free end of the collection power component 910 to move, driving the collection push plate 920 towards the collection box 940, so that it contacts and moves the workpiece a distance greater than its length. The controller 800 then controls the free end of the collection power component 910 to move in the opposite direction. In this way, when there are many workpieces, the subsequent workpieces push the workpieces in front to enter the collection box 940, thus achieving workpiece collection.

[0098] The working principle of this embodiment is as follows:

[0099] Several workpieces can be pre-placed in the two transmission pipe assemblies 500. Note that the workpieces placed in the second transmission pipe assembly 500 should have undergone the first fine grinding.

[0100] The workpiece is placed on the feeding pipe 780, allowing it to slide down onto the support plate 770 and contact the stop block 790. The controller 800 controls the feeding conveyor belt 720, which in turn drives the feeding rod 730. The feeding rod 730 passes upward through the gap between the support plate 770 and the loading rack 710, contacting and moving the workpiece upward to a preset position. The controller 800 then controls the feeding power component 740, whose free end drives the feeding push plate 750. After the feeding push plate 750 contacts the workpiece, it moves the workpiece into the first transmission pipe assembly 500. The workpiece then moves along the straight pipe 520, the reversing pipe 530, the vertical pipe 540, and the bent pipe 550, entering the processing pipe 510 and contacting the preceding workpiece.

[0101] During workpiece processing, assuming the workpiece held by clamping plate 312 is the first workpiece, the second workpiece is positioned between the first baffle 313 and the second baffle 316, contacting the first baffle 313. The third workpiece contacts the second workpiece, the fourth workpiece contacts the third workpiece, and so on. After processing, the controller controls the free end of clamping power component 311 to move away from the first workpiece, controlling clamping power component 311 to drive clamping plate 312, first baffle 313, and one end of transmission arm 314 to move. Transmission arm 314 is positioned at the limit rod 31. Under the limiting action of 5, the transmission arm 314 drives the second baffle 316 to swing towards the first workpiece, separating the second workpiece from the third workpiece. The controller controls the clamping power component 311 to move to the preset position. At this time, the second workpiece is still blocked by the first baffle 313. The clamping plate 312 and the friction wheel 321 move away from the movement path of the first workpiece. The controller controls the power push plate 330 to work, so that it contacts and drives the processed workpiece to move into the straight section of the processing tube 510, and the power push plate 330 quickly resets. Then, the clamping power component 311 is controlled to move, so that the next workpiece enters the bending groove 511. The free end of the clamping power component 311 is controlled to move in the opposite direction, so that the second baffle 316 swings in the opposite direction. When it moves away from the movement trajectory of the third workpiece, under the action of the gravity of the subsequent workpiece, the third workpiece moves downward and contacts the first baffle 313. The clamping plate 312 clamps the second workpiece, and the friction wheel 321 contacts the workpiece so that the second workpiece contacts the two side walls of the processing tube 510 corresponding to the bending groove 511.

[0102] The controller 800 controls the auxiliary power component 610 to work, causing it to drive the swing arm 620, adjusting bolt 640, nut 650, moving seat 660 and contact wheel 630 to swing, so that the contact wheel 630 swings to contact one end face of the workpiece, and one end face of the workpiece contacts the processing tube 510, thereby achieving precise positioning of the workpiece.

[0103] The controller 800 controls the feed unit 220 to work, which drives the power unit 210, the adjustment unit 230 and the grinding wheel 240 to move, so that the grinding wheel 240 extends into the workpiece. When the controller controls the free end of the power unit 231 to work, it drives the power ball 232 to move along the height direction and move along the power groove 235. The power ball 232 drives the tool holder 233 to swing around the connection point between it and the support 234. The tool holder 233 drives the protective frame 237 and the grinding wheel 240 to swing. The grinding wheel 240 produces an angular deflection. The grinding wheel 240 can adaptively conform to the inner arc contour on the inner circumference of the workpiece. At this time, the limit bolt 236 abuts against the tool holder 233.

[0104] The controller 800 controls the power unit 210 to reciprocate, causing the grinding wheel 240 to oscillate back and forth. The controller 800 also controls the rotating power component 322 to rotate, causing the friction wheel 321 to rotate. The friction between the friction wheel 321 and the pipe drives the workpiece to rotate, allowing the grinding wheel 240 to finely grind the first arc inner contour.

[0105] After grinding, the clamping assembly 300 releases the workpiece, which slides through the processing tube 510 into the discharge tube 560 and enters the tube body 411 from the discharge tube 560, contacting the anti-disengagement rod 412. The controller 800 controls the reversing power component 413 to rotate 90°, realizing the automatic reversing tube 410 (except for the fixed end of the reversing power component 413) to rotate 90°, so that the tube body 411 is directly facing the intermediate tube 420. The controller 800 controls the free end of the adjusting power component 417 to extend, and the adjusting power component 417 drives the transmission ball 416 to move within the ball shell 415. Due to the ball shell 415... The size is larger than that of the transmission ball 416. The transmission ball 416 drives the ball shell 415 to swing relative to the transmission ball 416. The ball shell 415 drives the tube body 411 and the anti-detachment rod 412 to swing, so that the end of the tube body 411 near the anti-detachment rod 412 is higher than the other end, allowing the workpiece to smoothly enter the intermediate tube 420. The intermediate tube 420 and the conveying tube 430 are in a converging shape. The size of the small end of the intermediate tube 420 is larger than the size of the large end of the conveying tube 430, allowing the workpiece to smoothly enter the conveying tube 430 and contact the two side walls of the small end of the conveying tube 430, so that the conveying tube 430 clamps the workpiece. The controller 800 controls the reversing power component 413 and the adjusting power component 417 to work in reverse, so that the tube body 411 is reset. The controller 800 controls the lifting unit 400 to work, driving the transmission pipe 430 to move upward to the preset position. The controller 800 controls the free end of the transfer power component 450 to extend, so that the transfer push plate 460 contacts and drives the workpiece to move, so that it enters the second transmission pipe assembly 500. The controller 800 controls the transfer power component 450 and the lifting unit 400 to work in reverse and reset.

[0106] The inner contour of the second arc of the workpiece is precision ground. After precision grinding, the workpiece slides out from the second discharge pipe 560 and enters the collection trough 930. The controller 800 controls the free end of the collection power component 910 to move, driving the collection push plate 920 towards the collection box 940, so that it contacts and moves the workpiece a distance greater than the workpiece length. The controller 800 then controls the free end of the collection power component 910 to move in the opposite direction. In this way, when there are many workpieces, the subsequent workpieces push the workpieces in front to move, so that they enter the collection box 940, thus realizing the collection of workpieces.

[0107] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grinding device for inner arc contours, characterized in that, include: The cabinet assembly (100), two grinding assemblies (200), two clamping assemblies (300), a transfer assembly (400), and two transmission pipeline assemblies (500). The cabinet assembly (100) includes a cabinet (110); The grinding assembly (200) includes a power unit (210), a feed unit (220), an adjustment unit (230), and a grinding wheel (240). The fixed end of the feed unit (220) is located inside the cabinet (110), the fixed end of the power unit (210) is located at the free end of the feed unit (220), the fixed end of the adjustment unit (230) is located at the output end of the power unit (210), and the grinding wheel (240) is located at the free end of the adjustment unit (230). The transmission pipeline assembly (500) is mounted on the cabinet (110); The clamping assembly (300) includes a clamping part (310) and a rotating power part (320). The fixed end of the clamping part (310) is disposed on the transmission pipe assembly (500), and the fixed end of the rotating power part (320) is disposed on the free end of the clamping part (310). The transfer component (400) is installed outside the cabinet component (100).

2. The arc inner contour grinding device according to claim 1, characterized in that: The adjustment unit (230) includes a power component (231), a power ball (232), a tool holder (233), and a bracket (234). The bracket (234) is located at the output end of the power unit (210). The fixed end of the power component (231) is vertically mounted on the bracket (234). The power ball (232) is located at the free end of the power component (231). The tool holder (233) has a power groove (235). The power ball (232) is slidably mounted in the power groove (235). The tool holder (233) is rotatably mounted on the bracket (234). The grinding wheel (240) is mounted on the tool holder (233).

3. The arc inner contour grinding device according to claim 2, characterized in that: The adjustment part (230) also includes a limiting bolt (236), which is threadedly connected to the bracket (234) and can abut against the tool holder (233).

4. The arc inner contour grinding device according to claim 1, characterized in that: The transmission pipeline assembly (500) includes a processing pipe (510), which has a bending groove (511) inside. The fixed end of the clamping part (310) is disposed on the processing pipe (510) and faces the opening end of the bending groove (511).

5. The arc inner contour grinding device according to claim 4, characterized in that: The clamping part (310) includes a clamping power member (311), a clamping plate (312), a first baffle (313), a transmission arm (314), a limiting rod (315), and a second baffle (316). The fixed end of the clamping power member (311) is disposed on the processing tube (510). The clamping plate (312) is disposed on the free end of the clamping power member (311). One end of the first baffle (313) is disposed on one end of the clamping plate (312). The limiting rod (315) is disposed on the processing tube (510). One end of the transmission arm (314) is rotatably disposed on the other end of the first baffle (313). A transmission groove (317) is provided on the transmission arm (314). The limiting rod (315) is relatively slidably disposed in the transmission groove (317). The second baffle (316) is disposed on the other end of the transmission arm (314).

6. The arc inner contour grinding device according to claim 5, characterized in that: The clamping assembly (300) also includes a power push plate (330), the fixed end of which is disposed on the processing tube (510), and the free end is slidably disposed in the bending groove (511).

7. The arc inner contour grinding device according to claim 1, characterized in that: The transfer assembly (400) includes an automatic reversing pipe (410), an intermediate pipe (420), a conveying pipe (430), a lifting part (440), a transfer power component (450), and a transfer push plate (460). The fixed end of the automatic reversing pipe (410) is located on the cabinet (110), the intermediate pipe (420) is located on the cabinet (110), the fixed end of the lifting part (440) is located on the cabinet (110), the conveying pipe (430) is located at the free end of the lifting part (440), the fixed end of the transfer power component (450) is located at the top of the cabinet (110), and the transfer push plate (460) is located at the free end of the transfer power component (450).

8. The arc inner contour grinding device according to claim 1, characterized in that: It also includes four auxiliary clamping components (600), each of which includes an auxiliary power component (610), a swing arm (620), and a contact wheel (630). The fixed end of the auxiliary power component (610) is disposed on the cabinet (110), the swing arm (620) is disposed on the free end of the auxiliary power component (610), and the contact wheel (630) is disposed on the swing arm (620).

9. The arc inner contour grinding device according to claim 8, characterized in that: The auxiliary clamping assembly (600) further includes an adjusting bolt (640), a nut (650), and a movable seat (660). The swing arm (620) has an adjusting groove (621). The bolt head of the adjusting bolt (640) is inserted into the adjusting groove (621). The adjusting bolt (640) passes through the movable seat (660). The movable seat (660) is slidably disposed on the swing arm (620). The contact wheel (630) is disposed on the swing arm (620). The nut (650) is threadedly connected to the adjusting bolt (640) and abuts against the movable seat (660) to lock the position of the movable seat (660).

10. The circular arc inner contour grinding apparatus according to any one of claims 1 to 9, characterized in that: It also includes a feeding assembly (700), which includes a feeding rack (710), two feeding conveyor belts (720), several feeding rods (730), a feeding power unit (740), and a feeding push plate (750). The feeding rack (710) is located on one side of the cabinet (110). The feeding conveyor belts (720) are installed on the feeding rack (710). The feeding rods (730) are installed on the conveyor belt of the feeding conveyor belt (720). The fixed end of the feeding power unit (740) is located at the upper end of the feeding rack (710), and the feeding push plate (750) is located at the free end of the feeding power unit (740).

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