A combined cylinder R-angle forming device

Abstract

The application discloses a combined cylinder R-angle forming device, which comprises a base, a tool setting mechanism detachably arranged on the base, a transmission mechanism rotatably arranged in the tool setting mechanism, a clamping mechanism arranged at one end of the transmission mechanism, and a driving mechanism arranged on the base and corresponding to the other end of the transmission mechanism and driving the transmission mechanism to rotate. Compared with the prior art, the clamping mechanism is arranged, so that the closed product can be quickly clamped, the clamping mechanism is connected with the transmission mechanism and the tool setting mechanism, the tool setting limit of the grinding plane can be quickly realized, the grinding wheel does not need to be modified and formed, the machining and forming of the outer R-angle of the closed product can be quickly realized, the adaptability is high, and the machining efficiency and product quality can be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of precision machining technology of surface grinders, and in particular to a combined cylinder R-angle forming device. Background Technology

[0002] In the grinding of product parts, some products often require grinding and shaping into rounded corners with a radius (R) using a grinding wheel. Existing surface grinders typically use an R-former and a dressing tool to first dress the grinding wheel to the required radius. After testing with test films and projection inspection to confirm the wheel's dimensions are correct, the rounded corners of the product part are then manufactured. This process results in low processing efficiency and high processing and time costs. Furthermore, in traditional machining processes, rounded corner structures of closed parts cannot be achieved using linear grinding on a grinding machine; they can only be achieved through CNC equipment, electrical discharge machining (EDM), or photoelectric polishing (PG) processes. This results in longer grinding times, higher processing costs, and poorer surface finish after machining. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a combined cylinder R-angle forming device to solve the problems of low processing efficiency, high cost and inability to process rounded corners of closed products in the prior art using traditional grinding machines.

[0004] To achieve the above objectives, the present invention provides a combined cylinder R-angle forming device, including a base, a tool setting mechanism detachably disposed on the base, a transmission mechanism rotatably disposed within the tool setting mechanism, a clamping mechanism disposed at one end of the transmission mechanism, and a driving mechanism disposed on the base and corresponding to the other end of the transmission mechanism and driving the transmission mechanism to rotate.

[0005] Furthermore, the clamping mechanism includes a clamping block eccentrically connected to the transmission mechanism, a product pressure plate covering the clamping block, and a product locking member detachably inserted through the clamping block. The clamping block and the product pressure plate form a product placement cavity arranged along the axial direction. The product locking member can be inserted into the product placement cavity from the outside and pressed against the product.

[0006] Furthermore, the tool setting mechanism includes a tool setting seat body detachably mounted on the base, a cover plate covering the tool setting seat body, a limiting bracket adapted to be mounted on the cover plate, and a limiting component that sequentially moves through the limiting bracket and the cover plate and makes movable contact with the transmission mechanism. The tool setting seat body and the cover plate form an axially arranged receiving cavity. The transmission mechanism is mounted in the receiving cavity. One end of the transmission mechanism extends out of the receiving cavity and is eccentrically connected to the clamping block. The other end of the transmission mechanism extends out of the receiving cavity and is coaxially connected to the drive mechanism.

[0007] Furthermore, a clearance groove is formed on the cover plate at the position corresponding to the limiting component, and a through hole is formed on the limiting bracket at the position corresponding to the clearance groove, which is coaxial with the clearance groove. The clearance groove is strip-shaped and has a long axis and a short axis.

[0008] The limiting assembly includes a limiting rod that is movably inserted into the perforation and the clearance groove from top to bottom, a limiting block disposed on the protruding end of the limiting rod, and an elastic element sleeved on the outside of the limiting rod and pressed between the limiting bracket and the limiting block or cover plate. The limiting block is contoured to the clearance groove, and the size of the limiting block is less than or equal to the size of the clearance groove and greater than the size of the perforation. The limiting rod can rotate axially relative to the perforation so that the limiting block has an unlocked state in which it presses against the elastic element and supports itself on the outer peripheral surface of the cover plate, and a locked state in which it releases the elastic element and passes downward through the clearance groove against the transmission mechanism. When the limiting block is in the unlocked state, the transmission mechanism can drive the clamping block to rotate and, after rotating to the correct position, place the limiting block in the locked state for tool setting.

[0009] Furthermore, the top of the limiting bracket is recessed to form a limiting groove;

[0010] The limiting rod includes a rotating rod that moves from top to bottom through the through hole and is connected to the limiting block, a handle on the rotating rod corresponding to the other end of the limiting block, and a limiting rod on the rotating rod that can be limited within the limiting groove. The elastic element is sleeved on the rotating rod at one end closer to the limiting block.

[0011] Furthermore, the tool setting mechanism also includes a first fine-tuning component and a second fine-tuning component disposed on the tool setting seat body and corresponding to one side of the clamping mechanism. The first fine-tuning component and the second fine-tuning component are symmetrically disposed on both sides of the rotation axis of the clamping mechanism and are located at the same horizontal position as the rotation axis of the clamping mechanism. The first fine-tuning component and the second fine-tuning component can abut against and limit the clamping mechanism during tool setting.

[0012] Furthermore, the transmission mechanism includes a bearing disposed in the accommodating cavity, a spindle rotatably disposed in the bearing, and a rotating power block connected to the spindle. The clamping block is eccentrically connected to the end of the spindle away from the rotating power block. The rotating power block is coaxially connected to the driving mechanism, and the rotation axes of the clamping block, the spindle, and the rotating power block are coaxial. The limiting stop block is in movable contact with the rotating power block.

[0013] Furthermore, the rotating power block has a ring portion that is sleeved inside the bearing; the ring portion forms a first limiting plane, a second limiting plane, and a third limiting plane that are recessed radially. The first limiting plane, the second limiting plane, and the third limiting plane are distributed sequentially along the circumference of the rotating power block, and adjacent first limiting planes, second limiting planes, and third limiting planes are set at included angles to each other. When the limiting block is in a locked state or an unlocked state, the limiting block abuts against one of the first limiting plane, the second limiting plane, or the third limiting plane.

[0014] Furthermore, the driving mechanism includes a rotary cylinder mounted on the base, a rotary table coaxially mounted on the output shaft of the rotary cylinder, a cylinder transmission bracket fixed on the rotary table, and a central positioning shaft coaxially passing through the rotary table and the cylinder transmission bracket. One end of the cylinder transmission bracket away from the rotary table is connected to the rotary power block. One end of the central positioning shaft is fixed to the rotary cylinder, and the other end passes through the rotary table and the cylinder transmission bracket in sequence and is coaxially positioned within the rotary power block.

[0015] Furthermore, the end of the rotating power block away from the axis column has a connecting portion extending outward beyond the bearing, and the side of the cylinder transmission bracket away from the rotary table has a fixed cavity, with the connecting portion extending into the fixed cavity and being fixedly fastened within the fixed cavity.

[0016] This invention, by incorporating a clamping mechanism capable of quickly holding the product to be processed, and connecting the clamping mechanism to the transmission mechanism and the tool setting mechanism, enables rapid tool setting and limiting of the grinding surface. This eliminates the need for dressing the grinding wheel, allowing for rapid machining of the outer radius (R) of enclosed products through manual clamping. This highly adaptable approach effectively improves processing efficiency and product quality. Furthermore, the transmission mechanism and clamping mechanism are mounted on the tool setting mechanism, which is detachably mounted on the base. The corresponding position of the transmission mechanism is fixed to the drive mechanism via a snap-fit ​​method. This facilitates quick disassembly of the tool setting mechanism, transmission mechanism, and clamping mechanism from the base and drive mechanism for manual R-angle machining, adapting to semi-automated rapid processing of small batches of products. This reduces energy consumption and saves processing costs. Simultaneously, the disassembled tool setting mechanism, transmission mechanism, and clamping mechanism can be combined with traditional fixtures, sine tables, and forming grinding wheels to machine more arc structures on enclosed products, further enhancing the adaptability of this device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the combined cylinder R-angle forming device of the present invention.

[0018] Figure 2 for Figure 1 Exploded view.

[0019] Figure 3 This is a schematic diagram of the clamping mechanism.

[0020] Figure 4 This is a schematic diagram of the tool setting mechanism.

[0021] Figure 5 This is an assembly drawing of the limit component, limit bracket, and cover plate.

[0022] Figure 6 for Figure 5 Exploded view.

[0023] Figure 7 This is a schematic diagram of the transmission mechanism.

[0024] Figure 8 This is a schematic diagram of the bearing structure.

[0025] Figure 9 This is a schematic diagram of the rotating power block.

[0026] Figure 10 This is another structural schematic diagram of the rotating power block.

[0027] Figure 11 This is a schematic diagram of the drive mechanism.

[0028] The diagrams in the instruction manual are labeled as follows:

[0029] Base 10;

[0030] Clamping mechanism 20, product placement cavity 20a, clamping block 21, product support surface 21a, second mounting hole 21b, first clamping block 211, second clamping block 212, product pressure plate 22, product cover surface 22a, product locking component 23;

[0031] Tool setting mechanism 30, receiving cavity 30a, tool setting seat body 31, bearing support surface 31a, cover plate 32, bearing cover mating surface 32a, clearance groove 32b, unlocking groove 32c, limiting bracket 33, through hole 33a, fixed section 331, connecting section 332, limiting assembly 34, limiting pull rod 341, rotating rod 3411, handle 3412, limiting rod 3413, limiting stop block 342, elastic element 343, first fine adjustment assembly 35, fine adjustment bracket 351, adjusting hole 351a, fine adjustment bolt 352, contact pad 353, second fine adjustment assembly 36;

[0032] Transmission mechanism 40, bearing 41, collar 411, rolling groove 411a, needle roller 412, shaft column 42, first mounting hole 42a, rotating power block 43, fourth mounting hole 43a, ring sleeve part 431, first limiting plane 431a, second limiting plane 431b, third limiting plane 431c, connecting part 432, first transmission plane 432a, second transmission plane 432b, third transmission plane 432c, fourth transmission plane 432d;

[0033] Drive mechanism 50, rotary cylinder 51, rotary table 52, cylinder transmission bracket 53, fixed cavity 53a, first frame 531, second frame 532, connecting frame 533, center positioning shaft 54, power switch 55, air pipe 56, solenoid valve 57. Detailed Implementation

[0034] The following detailed description illustrates the specific implementation method:

[0035] Example

[0036] like Figure 1 and Figure 2 As shown, the combined cylinder R-angle forming device of the present invention includes a base 10, a clamping mechanism 20, a tool setting mechanism 30, a transmission mechanism 40, and a drive mechanism 50. The base 10 supports the clamping mechanism 20, the tool setting mechanism 30, the transmission mechanism 40, and the drive mechanism 50, so that the device can be placed and installed on a machine tool or other structure that needs to perform R-angle processing. The clamping mechanism 20 is installed at one end of the transmission mechanism 40. The transmission mechanism 40 is installed inside the tool setting mechanism 30, and the end of the transmission mechanism 40 away from the clamping mechanism 20 is connected to the drive mechanism 50. The clamping mechanism 20 is used to quickly clamp the product to be processed and can rotate synchronously with the transmission mechanism 40 when the drive mechanism 50 drives the transmission mechanism 40 to rotate, so as to drive the product to swing, thereby facilitating the grinding wheel to perform R-angle processing on the product. The tool setting mechanism 30 is detachably mounted on the base 10, and the transmission mechanism 40 is connected to the drive mechanism 50 by a snap-fit ​​connection. This allows the clamping mechanism 20, the tool setting mechanism 30, and the transmission mechanism 40 to be quickly detached from the base 10 and the drive mechanism 50 as a whole, so that the clamping mechanism 20 can be manually driven to swing the product, thereby adapting to small-batch production.

[0037] like Figure 3As shown, the clamping mechanism 20 includes a clamping block 21 eccentrically connected to the transmission mechanism 40, a product pressure plate 22 covering the clamping block 21, and a product locking member 23 detachably passing through the clamping block 21. When clamping, the product is supported on the clamping block 21, and the product pressure plate 22 covers both the product and the clamping block 21. The product locking member 23 then secures the product. One side of the clamping block 21 is opposite to the product pressure plate 22, and after the product pressure plate 22 is closed, an axially arranged product placement cavity 20a is formed between the clamping block 21 and the product pressure plate 22. The product is placed in the product placement cavity 20a, and the product locking member 23 can pass through the product pressure plate 22 from top to bottom (or from outside to inside) and enter the product placement cavity 20a, pressing against the product to secure it.

[0038] Specifically, the clamping block 21 has a product support surface 21a that conforms to the outer surface of the product on the side facing the product pressure plate 22, so as to provide conformal support for the bottom of the product and increase the stability of the product placement; the product pressure plate 22 has a product cover surface 22a that is opposite to the product support surface 21a on the side facing the clamping block 21. When the product pressure plate 22 is closed onto the clamping block 21, the product support surface 21a and the product cover surface 22a are closed to form the product placement cavity 20a.

[0039] In this embodiment, the clamping block 21 is generally V-shaped. The clamping block 21 includes a first clamping block 211 and a second clamping block 212 arranged at an angle. Preferably, the angle between the first clamping block 211 and the second clamping block 212 is 90°, making the product support surface 21a a right-angled surface to support the square product. It is understood that in other embodiments, the clamping block 21 can be replaced according to the product structure to change the shape of the product support surface 21a, such as a wedge shape or a polygonal structure, to achieve stable clamping of the product when processing R-angles on products with different structures. The two ends of the product pressure plate 22 are detachably mounted on the first clamping block 211 and the second clamping block 212 by bolts, so as to adjust the size of the product placement cavity 20a according to the product size. Simultaneously, the middle of the product pressure plate 22 is connected to its two ends by an arc-shaped pressure plate. A screw hole is provided through the arc-shaped pressure plate along the vertical direction, and the product locking member 23 is preferably a locking bolt screwed into the screw hole. When clamping the product, first unscrew the locking bolt outwards to leave enough space for product clamping. Then, insert the product into the clamping block 21 from front to back (in this embodiment, the front is the side of the clamping block 21 that is far away from the transmission mechanism 40, and the back is the side that is close to the transmission mechanism 40) and support it on the product support surface 21a. After the product is in place, screw the locking bolt inwards until the bottom of the locking bolt abuts against the surface of the product, thereby fixing the product.

[0040] like Figure 4As shown, the tool setting mechanism 30 includes a tool setting seat 31 detachably mounted on the base 10, a cover plate 32 covering the tool setting seat 31, a limiting bracket 33 adapted to be mounted on the cover plate 32, and a limiting component 34 that sequentially moves through the limiting bracket 33 and the cover plate 32 and makes movable contact with the transmission mechanism 40. The tool setting seat 31 supports the cover plate 32, the limiting bracket 33, and the limiting component 34. One side of the tool setting seat 31 is opposite to the cover plate 32, and after the cover plate 32 is closed, an axially arranged receiving cavity 30a is formed between the tool setting seat 31 and the cover plate 32 for assembling the transmission mechanism 40. In this embodiment, the tool setting seat 31 is detachably mounted on the base 10 with bolts so that the entire tool setting mechanism 30, as well as the transmission mechanism 40 and the clamping mechanism 20 mounted thereon, can be separated from the base 10. This facilitates quick disassembly and assembly when changing the power source or its combination with other fixtures (such as a sine table), thus improving the applicability of the device. Understandably, in some other embodiments, the tool holder 31 may also be mounted on the base 10 using other quick-release structures (such as snap-fit, pin, etc.) to achieve quick assembly and disassembly of the tool holder 31.

[0041] Specifically, the tool setter body 31 has a semi-circular bearing support surface 31a on the side facing the cover plate 32 to support the bottom of the transmission mechanism 40 (specifically, the bottom of the bearing 41 described below); the cover plate 32 has a bearing cover surface 32a opposite to the bearing support surface 31a on the side facing the tool setter body 31 to cover the top of the transmission mechanism 40 (i.e., the top of the bearing 41). When the cover plate 32 is covered onto the tool setter body 31, the bearing support surface 31a and the bearing cover surface 32a surround each other to form the accommodating cavity 30a.

[0042] A clearance groove 32b is formed on the cover plate 32 at the position corresponding to the limiting component 34. The clearance groove 32b provides a passage for the limiting component 34, so that the limiting component 34 can pass through the clearance groove 32b and enter the receiving cavity 30a and make active contact with the transmission mechanism 40 assembled in the receiving cavity 30a, so as to lock the transmission mechanism 40 when the grinding wheel is set, and thereby adjust the angle of the transmission mechanism 40 in the left and right directions to zero when it swings.

[0043] Preferably, the relief groove 32b has a strip-shaped structure and has a long long axis and a short short axis. The bottom of the limiting component 34 matches the shape and size of the relief groove 32b, and the limiting component 34 can rotate axially relative to the through hole 33a and the relief groove 32b. When the limiting component 34 rotates to the position matching the relief groove 32b, the bottom of the limiting component 34 can pass through the relief groove 32b and enter the receiving cavity 30a, and abut against the transmission mechanism 40 to lock the rotation of the transmission mechanism 40. When the limiting component 34 is pulled out and rotated at any angle, the bottom of the limiting component 34 forms a certain angle with the relief groove 32b. At this time, the bottom of the limiting component 34 will abut against the outer peripheral surface of the cover plate 32 and cannot extend into the receiving cavity 30a, thereby unlocking the rotation of the transmission mechanism 40.

[0044] Since the outer peripheral surface of the cover plate 32 in this embodiment is an arc surface, in order to ensure that the limiting component 34 can stably contact the outer peripheral surface of the cover plate 32 after unlocking, an unlocking groove 32c that does not penetrate the cover plate 32 is provided on the outer peripheral surface of the cover plate 32 at the position corresponding to the clearance groove 32b. The long axis of the unlocking groove 32c is set at 90° to intersect the long axis of the clearance groove 32b. When the limiting component 34 unlocks the transmission mechanism 40, the bottom of the limiting component 34 can be supported in the unlocking groove 32c to increase the contact area between the bottom of the limiting component 34 and the cover plate 32 when unlocking, ensuring stable contact between the two and preventing the limiting component 34 from shifting.

[0045] The limiting bracket 33 spans the cover plate 32 (or accommodating cavity 30a) radially. A through hole 33a is formed on the limiting bracket 33 at a position corresponding to the clearance groove 32b, penetrating the limiting bracket 33. The through hole 33a is coaxially arranged with the clearance groove 32b to allow the limiting component 34 to pass through and support it. In this embodiment, the through hole 33a is circular, and its diameter is at least smaller than the major axis length of the clearance groove 32b, thereby limiting the movement range of the limiting component 34 and preventing it from detaching from the limiting bracket 33. Specifically, the limiting bracket 33 includes a fixing section 331 fixed to both sides of the cover plate 32 by bolts, and a connecting section 332 spanning above the cover plate 32 and connecting the two fixing sections 331. The through hole 33a is formed on the connecting section 332. There is a gap between the bottom of the connecting section 332 and the outer peripheral surface of the cover plate 32 at the corresponding position to reserve movement space for the limiting component 34. Preferably, the top of the limiting bracket 33 (i.e., the top of the connecting part) is recessed to form a limiting groove. The limiting groove can limit the limiting component 34 after the limiting component 34 locks the transmission mechanism 40, ensuring the stable locking of the transmission mechanism 40.

[0046] like Figure 5 and Figure 6As shown, the limiting component 34 includes a limiting rod 341 that is movably inserted into the through hole 33a and the clearance groove 32b from top to bottom, a limiting block 342 disposed on the through end of the limiting rod 341, and an elastic element 343 sleeved on the outside of the limiting rod 341 and pressed between the limiting bracket 33 and the limiting block 342 or the cover plate 32. The limiting block 342 is used to make movable contact with the transmission mechanism 40 or the cover plate 32 to lock and unlock the rotation of the transmission mechanism 40. The limiting rod 341 is used to drive the limiting block 342 in and out of the clearance groove 32b under the action of external force to achieve locking and unlocking. The elastic element 343 is used to fix the entire limiting component 34 after the limiting block 342 is unlocked to prevent the limiting component 34 from rotating arbitrarily and to improve the stability of the limiting component 34 after unlocking. In this embodiment, the elastic element 343 is implemented using a compression spring; it is understood that in other embodiments, the elastic element 343 may also be implemented using other elastic structures (such as spring sheets).

[0047] The limiting block 342 is contoured to the relief groove 32b, and the size of the limiting block 342 is smaller than or equal to the size of the relief groove 32b. This allows the limiting component 34 to move radially outward or inward along the receiving cavity 30a, enabling the limiting block 342 to pass through the relief groove 32b and enter or exit the receiving cavity 30a. Simultaneously, the size of the limiting block 342 is larger than the size of the through hole 33a, preventing the limiting component 34 from falling off the limiting bracket 33 when moving radially outward along the receiving cavity 30a. In this embodiment, the limiting rod 341 can rotate axially relative to the through hole 33a, and the limiting block 342 has a locked state abutting against the transmission mechanism 40 and an unlocked state supported on the outer peripheral surface of the cover plate 32 (or abutting against the unlocking groove 32c). When the limit stop 342 is in the locked state, the limit rod 341 rotates to the position where the limit stop 342 is aligned with the relief groove 32b, allowing the limit stop 342 to radially pass inward through the relief groove 32b and abut against the transmission mechanism 40. Under the action of external force, the limit stop 342 is pressed against the transmission mechanism 40 to prevent the transmission mechanism 40 from rotating, thereby facilitating grinding wheel tool setting. When the limit stop 342 is in the unlocked state, the limit rod 341 is pulled radially outward. 1. Move the limiting block 342 outward through the clearance groove 32b to the outside of the receiving cavity 30a and squeeze the elastic element 343. After rotating the limiting rod 341 clockwise or counterclockwise by 90°, align the limiting block 342 with the unlocking groove 32c and release the limiting rod 341. This allows the elastic element 343 to push the limiting block 342 back to its original position and abut against the unlocking groove 32c, thereby releasing the restriction on the transmission mechanism 40 and facilitating the rotation of the transmission mechanism 40 for processing the product.

[0048] The limiting rod 341 includes a rotating rod 3411 that moves from top to bottom through the through hole 33a and is connected to the limiting block 342; a handle 3412 on the rotating rod 3411 corresponding to the other end of the limiting block 342; and a limiting rod 3413 on the rotating rod 3411 that can be limited within the limiting groove. The elastic element 343 is sleeved on the rotating rod 3411 at one end closer to the limiting block 342. The handle 3412 provides a point of force when pushing or pulling the rotating rod 3411 to facilitate operation. The rotating rod 3411 can rotate axially around the through hole 33a to drive the limiting block 342 to rotate under the action of the handle 3412, aligning the limiting block 342 with the clearance groove 32b or the unlocking groove 32c. The limiting rod 3413 can be limited within the limiting groove when the limiting block 342 is in the locked state to restrict the rotation of the rotating rod 3411.

[0049] In a preferred embodiment, the tool setting mechanism 30 further includes a first fine-tuning component 35 and a second fine-tuning component 36 disposed on the tool setting seat 31 and corresponding to one side of the clamping mechanism 20. The first fine-tuning component 35 and the second fine-tuning component 36 are used to fine-tune the zero mark of the swing of the transmission mechanism 40 during tool setting to ensure accurate tool setting. The first fine-tuning component 35 and the second fine-tuning component 36 are symmetrically disposed on both sides of the rotation axis of the clamping mechanism 20 and are located at the same horizontal position as the rotation axis of the clamping mechanism 20, so that when the transmission mechanism 40 drives the clamping mechanism 20 to swing clockwise or counterclockwise to the zero mark position (i.e., when the clamping mechanism 20 abuts against the first fine-tuning component 35 or the second fine-tuning component 36) during tool setting and the count is not zero, zeroing is performed.

[0050] Specifically, the first fine-tuning component 35 and the second fine-tuning component 36 are located at the same horizontal level as the rotation center of the clamping block 21, so as to process an R-angle with a central angle of 90°. The first fine-tuning component 35 and the second fine-tuning component 36 include a fine-tuning bracket 351 fixed on the tool setting body 31, a fine-tuning bolt 352 adjustable from bottom to top and passing through the fine-tuning bracket 351, and a contact pad 353 provided on the protruding end of the fine-tuning bolt 352. An adjustment hole 351a is provided through the fine-tuning bracket 351 in the vertical direction. The fine-tuning bolt 352 is screwed into the adjustment hole 351a from bottom to top. The contact pad 353 is threadedly fixed to the protruding end of the fine-tuning bolt 352, that is, fixed to the top of the fine-tuning bolt 352, so that during the tool setting or processing of the clamping block 21, the contact pad 353 can contact the surface of the clamping block 21 to realize the tool setting and limit the rotation stroke of the clamping block 21, thereby realizing the processing of the R-angle.

[0051] During tool setting, with the limit stop 342 in the unlocked state, rotate the clamping block 21 clockwise to support it on the contact pad 353 of the first fine-tuning component 35. Use the handle 3412 to rotate the rotating rod 3411 to lock the limit stop 342. Set the grinding wheel clockwise. If the machine shows that the angle is not zero, the zero mark position can be finely adjusted by screwing the fine-tuning bolt 352 in and out to bring the angle to zero, thus completing the tool setting of the grinding wheel in the clockwise direction. Similarly, for the tool setting of the grinding wheel in the counterclockwise direction, first pull the limit stop 342 to the unlocked state, then rotate the clamping block 21 counterclockwise to support it on the contact pad 353 of the second fine-tuning component 36. Repeat the above process to set the grinding wheel in the counterclockwise direction.

[0052] Please return to the reference. Figure 1 One end of the transmission mechanism 40 extends out of the first end of the accommodating cavity 30a and is eccentrically connected to the clamping block 21. The other end of the transmission mechanism 40 extends out of the second end of the accommodating cavity 30a and is coaxially connected to the driving mechanism 50, so as to transmit the power of the driving mechanism 50 to the clamping block 21, thereby causing the clamping block 21 to swing within a set angle range to perform R-angle processing. In this embodiment, the eccentricity is set such that the connection position between the transmission mechanism 40 and the clamping block 21 is not at the rotation center or swing center of the transmission mechanism 40 and the clamping block 21, but their rotation centers or swing centers are always located on the same axis. That is, the two are connected at other positions outside the rotation center or swing center. This is solved according to the specific structure of the clamping block 21. Since the clamping block 21 in this embodiment is mainly used for clamping closed products, it is roughly in the shape of a "V" and its rotation center or swing center does not have a reliable connection position. Therefore, the connection position is deviated from its rotation center or swing center. It is understood that in some other embodiments, when the clamping block 21 has other structures, the two can also be connected at any position including the rotation center or swing center.

[0053] like Figure 7 As shown, the transmission mechanism 40 includes a bearing 41 disposed in the accommodating cavity 30a, a spindle 42 rotatably disposed in the bearing 41, and a rotating power block 43 connected to the spindle 42; the clamping block 21 is eccentrically connected to the end of the spindle 42 away from the rotating power block 43, the rotating power block 43 is coaxially connected to the drive mechanism 50, and the rotation axes of the clamping block 21, the spindle 42 and the rotating power block 43 are coaxial, so that the drive mechanism 50 can transmit power to the spindle 42 through the rotating power block 43, thereby causing the spindle 42 to drive the clamping block 21 to swing.

[0054] like Figure 8As shown, the bearing 41 is a needle roller bearing. The bearing 41 includes a collar 411 fixedly disposed in the accommodating cavity 30a and needle rollers 412 uniformly disposed circumferentially on the inner circumferential surface of the collar 411. A rolling groove 411a is provided on the inner circumferential surface of the collar 411 corresponding to the position of the needle rollers 412. The needle rollers 412 are rolledly mounted in the rolling grooves 411a. The needle rollers 412 have a portion that extends inward beyond the rolling grooves 411a. This extended portion makes rolling contact with the outer circumferential surface of the shaft column 42. When the driving mechanism 50 drives the rotating power block 43 to rotate the shaft column 42, the friction between the outer circumferential surface of the shaft column 42 and the needle rollers 412 can be reduced, making the rotation of the shaft column 42 smoother.

[0055] Please return to the reference. Figure 2 and Figure 7 In this embodiment, the spindle 42 is V-shaped. One end of the spindle 42 is fixedly connected to the clamping block 21 by a first mounting post (not shown), and the other end is fixedly connected to the rotating power block 43 by at least one second mounting post (not shown). Specifically, a first mounting hole 42a is eccentrically provided on one side of the shaft column 42 corresponding to the clamping block 21, and a matching second mounting hole 21b is provided on the clamping block 21 at the position corresponding to the first mounting hole 42a. One end of the first mounting column is fixedly installed in the first mounting hole 42a, and the other end is fixedly installed in the second mounting hole 21b. At least one third mounting hole (not shown) is eccentrically provided on one side of the shaft column 42 corresponding to the rotating power block 43, and a matching fourth mounting hole 43a is provided on the rotating power block 43 at the position corresponding to the third mounting hole. One end of the second mounting column is fixedly installed in the third mounting hole, and the other end of the second mounting column is fixedly installed in the fourth mounting hole 43a. This allows the shaft column 42 to rotate under the drive of the rotating power block 43, thereby causing the clamping block 21 to swing, so as to process the R-angle on the product.

[0056] Understandably, in other embodiments, the spindle 42 can also be cylindrical. In this case, the second mounting column does not need to be eccentric, but can be coaxial or in other configurations, as long as it can fix the spindle 42 and the rotating power block 43.

[0057] like Figure 9 and Figure 10As shown, the rotating power block 43 has a ring portion 431 that is sleeved within the bearing 41, and the ring portion 431 of the rotating power block 43 is in movable contact with the limiting block 342. Specifically, the ring portion 431 forms a first limiting plane 431a, a second limiting plane 431b, and a third limiting plane 431c that are radially recessed. The first limiting plane 431a, the second limiting plane 431b, and the third limiting plane 431c are distributed sequentially along the circumference of the rotating power block 43, and adjacent first limiting planes 431a, second limiting planes 431b, and third limiting planes 431c are set at included angles to each other. When the limiting block 342 is in the locked state, the limiting block 342 abuts against one of the first limiting planes 431a, second limiting planes 431b, or third limiting planes 431c. More specifically, when the grinding wheel is set clockwise, the limiting block 342 abuts against the first limiting plane 431a, while when the grinding wheel is set counterclockwise, the limiting block 342 abuts against the third limiting plane 431c.

[0058] The rotating power block 43 also has a connecting portion 432 extending outward from the bearing 41 at one end away from the axis column 42. The connecting portion 432 of the rotating power block 43 is fixedly engaged with the drive mechanism 50 so that the transmission mechanism 40 can be quickly removed from the drive mechanism 50 when switching to manual drive. Specifically, the connecting portion 432 has a radially recessed first transmission plane 432a, a second transmission plane 432b, a third transmission plane 432c, and a fourth transmission plane 432d. The first transmission plane 432a, the second transmission plane 432b, the third transmission plane 432c, and the fourth transmission plane 432d are sequentially distributed circumferentially on the outer peripheral surface of the connecting portion 432, and the extension lines of the first transmission plane 432a, the second transmission plane 432b, the third transmission plane 432c, and the fourth transmission plane 432d are perpendicular to each other, so that the connecting portion 432 can extend into the corresponding position of the drive mechanism 50 to be fixedly engaged with the drive mechanism 50.

[0059] Preferably, the outer peripheral surface of the connecting portion 432, formed by the first transmission plane 432a, the second transmission plane 432b, the third transmission plane 432c, and the fourth transmission plane 432d, is interference-fitted with the drive mechanism 50. This increases the connection stability between the connecting portion 432 and the drive mechanism 50, preventing the connecting portion 432 of the rotating power block 43 from detaching from the drive mechanism 50 due to centrifugal force during operation using the drive mechanism 50 as the power source. It is understood that in other embodiments, the connecting portion 432 may also be connected using quick-release structures such as bolts, clips, or pins to ensure a stable connection while enabling quick assembly and disassembly of the connecting portion 432 and the drive mechanism 50.

[0060] like Figure 11 As shown, the drive mechanism 50 includes a rotary cylinder 51 mounted on the base 10, a rotary table 52 coaxially mounted on the output shaft of the rotary cylinder 51, a cylinder transmission bracket 53 fixed on the rotary table 52, and a central positioning shaft 54 ​​coaxially passing through the rotary table 52 and the cylinder transmission bracket 53. A rotary power block 43 is connected to the cylinder transmission bracket 53 on the side opposite to the rotary table 52. One end of the central positioning shaft 54 ​​is fixed to the rotary cylinder 51, and the other end passes through the rotary table 52 and the cylinder transmission bracket 53 sequentially and is coaxially positioned within the rotary power block 43 to position the rotation center of the drive mechanism 50 and the rotary power block 43. When the rotary cylinder 51 drives the rotary table 52 to rotate, the rotary table 52 can drive the cylinder transmission bracket 53 to rotate, thereby transmitting power to the rotary power block 43 through the cylinder transmission bracket 53, which in turn drives the clamping block 21 to swing via the shaft column 42. Preferably, the outer peripheral surface of the rotary table 52 is provided with a scale to adjust the swing angle of the drive cylinder on the drive clamping block 21, thereby processing R angles of different shapes or sizes.

[0061] In this embodiment, a fixing cavity 53a is formed on the side of the cylinder transmission bracket 53 away from the rotary table 52. The fixing cavity 53a is opposite to the connecting portion 432, allowing the connecting portion 432 to extend into the fixing cavity 53a and be fixedly fastened within it. Specifically, the cylinder transmission bracket 53 includes a first frame 531 fixed to the rotary table 52, a second frame 532 fixed to the connecting portion 432, and a connecting frame 533 connecting the first frame 531 and the second frame 532. The fixing cavity 53a is formed within the second frame 532. The first frame 531 is fixed to the rotary table 52 by bolts, and the second frame 532 is fixedly fastened to the connecting portion 432. The fixing cavity 53a is approximately square. The first transmission plane 432a, the second transmission plane 432b, the third transmission plane 432c, and the fourth transmission plane 432d respectively abut against the four planes of the square fixing cavity 53a and are interference-fitted with the fixing cavity 53a. Of course, to further increase the connection stability between the second frame 532 and the rotating power block 43, bolts can be used to reinforce and fix the two when the connecting part 432 is snapped into the fixing cavity 53a. Understandably, in some other embodiments, the second frame 532 and the connecting part 432 can also be directly fixed with bolts, as long as their rotation axes are coaxial.

[0062] In addition, the drive mechanism 50 also includes a power switch 55 that controls the start and stop of the rotary cylinder 51, an air pipe 56 that drives the rotary table 52 to rotate, and a solenoid valve 57 that is installed on the air pipe 56 and controls the opening and closing of the air pipe 56. The power switch 55 controls the opening and closing of the solenoid valve 57 to allow air to flow through or cut off the air in the air pipe 56 to generate air pressure to drive the rotary table 52 to rotate. This, in turn, causes the cylinder transmission bracket 53 to transmit power to the rotating power block 43, thereby driving the shaft column 42 and the clamping block 21 to rotate to achieve the machining of the R angle. The power switch 55, air pipe 56, and solenoid valve 57 in this embodiment can all be implemented using existing technology, and will not be described in detail in this embodiment.

[0063] In use, firstly, the locking bolt is unscrewed outwards to leave sufficient space for product clamping. Then, the product is inserted from front to back into the clamping block 21 and supported on the product support surface 21a. After the product is in place, the locking bolt is screwed inwards until the bottom of the locking bolt abuts against the surface of the product to secure it. Next, the handle 3412 is pulled radially outwards, causing the rotating rod 3411 to move the limiting block 342 outwards through the clearance groove 32b and to the outside of the receiving cavity 30a, pressing against the elastic element 343. Then, the limiting rod 341 is rotated 90° clockwise or counterclockwise to align the limiting block 342 with the unlocking groove 32c. The limiting rod 341 is then released, causing the elastic element 343 to push the limiting block 342 back to its original position and abut against the unlocking groove 32c. Finally, the clamping block 21 is rotated clockwise to support the first fine-tuning assembly 35. On the contact pad 353, the rotating rod 3411 is rotated using the handle 3412 to lock the limit stop 342. The grinding wheel is then set clockwise. The fine-tuning bolt 352 of the first fine-tuning component 35 is adjusted to zero the initial angle in the clockwise direction. After the limit stop 342 is pulled to the unlocked state, the clamping block 21 is rotated counterclockwise to support itself on the contact pad 353 of the second fine-tuning component 36. The aforementioned process is repeated to zero the initial angle in the counterclockwise direction, completing the tool setting. Next, after the tool setting is completed, the limit component 34 is pulled to the unlocked state. Finally, the drive cylinder is activated, causing the drive cylinder to drive the rotary table 52 to rotate the cylinder transmission bracket 53. The power is transmitted to the clamping block 21 through the rotating power block 43 and the spindle 42, causing the clamping block 21 to swing and cooperate with the grinding wheel to perform R-angle machining on the product, which is convenient and fast.

[0064] When using this invention, the clamping mechanism 20, the tool setting mechanism 30, and the transmission mechanism 40 can be removed from the base 10 as a whole. The transmission mechanism 40 and the rotating mechanism can be manually driven to swing and process the R-angle of the product. The operation is simple, suitable for small batch product processing, and helps to reduce energy consumption and save production costs.

Claims

1. A combined cylinder R-angle forming device, comprising a base, characterized in that, It also includes a tool setting mechanism detachably mounted on the base, a transmission mechanism rotatably mounted within the tool setting mechanism, a clamping mechanism mounted at one end of the transmission mechanism, and a drive mechanism mounted on the base and corresponding to the other end of the transmission mechanism and driving the transmission mechanism to rotate. The tool setting mechanism includes a tool setting seat detachably mounted on the base, a cover plate covering the tool setting seat, a limiting bracket adapted to be mounted on the cover plate, and a limiting component that moves sequentially through the limiting bracket and the cover plate and makes movable contact with the transmission mechanism. The tool setting seat and the cover plate form an axially arranged receiving cavity, and the transmission mechanism is mounted in the receiving cavity. The limiting component is used to lock the transmission mechanism when the grinding wheel is set with the product, thereby adjusting the angle of the transmission mechanism in the left and right directions to zero when it swings, so that the grinding wheel can be used to perform R-angle machining on the product without pre-dressing it to an R-angle shape. The tool setting mechanism further includes a first fine-tuning component and a second fine-tuning component disposed on the tool setting seat body and corresponding to one side of the clamping mechanism. The first fine-tuning component and the second fine-tuning component are symmetrically disposed on both sides of the rotation axis of the clamping mechanism and are located at the same horizontal position as the rotation axis of the clamping mechanism. The first fine-tuning component and the second fine-tuning component can abut against and limit the clamping mechanism during tool setting.

2. The combined cylinder R-angle forming device according to claim 1, characterized in that, The clamping mechanism includes a clamping block eccentrically connected to the transmission mechanism, a product pressure plate covering the clamping block, and a product locking member detachably inserted through the clamping block. The clamping block and the product pressure plate form a product placement cavity arranged along the axial direction. The product locking member can be inserted into the product placement cavity from the outside and pressed against the product.

3. The combined cylinder R-angle forming device according to claim 2, characterized in that, One end of the transmission mechanism extends out of the first end of the accommodating cavity and is eccentrically connected to the clamping block, while the other end of the transmission mechanism extends out of the second end of the accommodating cavity and is coaxially connected to the driving mechanism.

4. The combined cylinder R-angle forming device according to claim 3, characterized in that, A clearance groove is formed on the cover plate at the position corresponding to the limiting component, and a through hole is formed on the limiting bracket at the position corresponding to the clearance groove, which is coaxial with the clearance groove. The clearance groove is strip-shaped and has a long axis and a short axis. The limiting assembly includes a limiting rod that is movably inserted into the perforation and the clearance groove from top to bottom, a limiting block disposed on the protruding end of the limiting rod, and an elastic element sleeved on the outside of the limiting rod and pressed between the limiting bracket and the limiting block or cover plate. The limiting block is contoured to the clearance groove, and the size of the limiting block is less than or equal to the size of the clearance groove and greater than the size of the perforation. The limiting rod can rotate axially relative to the perforation so that the limiting block has an unlocked state in which it presses against the elastic element and supports itself on the outer peripheral surface of the cover plate, and a locked state in which it releases the elastic element and passes downward through the clearance groove against the transmission mechanism. When the limiting block is in the unlocked state, the transmission mechanism can drive the clamping block to rotate and, after rotating to the correct position, place the limiting block in the locked state for tool setting.

5. The combined cylinder R-angle forming device according to claim 4, characterized in that, The top of the limiting bracket is recessed to form a limiting groove; The limiting rod includes a rotating rod that moves from top to bottom through the through hole and is connected to the limiting block, a handle on the rotating rod corresponding to the other end of the limiting block, and a limiting rod on the rotating rod that can be limited within the limiting groove. The elastic element is sleeved on the rotating rod at one end closer to the limiting block.

6. The combined cylinder R-angle forming device according to claim 4, characterized in that, The transmission mechanism includes a bearing disposed in the accommodating cavity, a spindle rotatably disposed in the bearing, and a rotating power block connected to the spindle. The clamping block is eccentrically connected to the end of the spindle away from the rotating power block. The rotating power block is coaxially connected to the driving mechanism, and the rotation axes of the clamping block, the spindle, and the rotating power block are coaxial. The limiting block is in movable contact with the rotating power block.

7. The combined cylinder R-angle forming device according to claim 6, characterized in that, The rotating power block has a ring portion that is sleeved inside the bearing; the ring portion forms a first limiting plane, a second limiting plane, and a third limiting plane that are recessed radially. The first limiting plane, the second limiting plane, and the third limiting plane are distributed sequentially along the circumference of the rotating power block, and adjacent first limiting planes, second limiting planes, and third limiting planes are set at included angles to each other. When the limiting block is in a locked state or an unlocked state, the limiting block abuts against the first limiting plane, the second limiting plane, or the third limiting plane.

8. The combined cylinder R-angle forming device according to claim 6, characterized in that, The driving mechanism includes a rotary cylinder mounted on the base, a rotary table coaxially mounted on the output shaft of the rotary cylinder, a cylinder transmission bracket fixed on the rotary table, and a central positioning shaft coaxially passing through the rotary table and the cylinder transmission bracket. One end of the cylinder transmission bracket away from the rotary table is connected to the rotary power block. One end of the central positioning shaft is fixed to the rotary cylinder, and the other end passes through the rotary table and the cylinder transmission bracket in sequence and is coaxially positioned inside the rotary power block.

9. The combined cylinder R-angle forming device according to claim 8, characterized in that, The rotating power block has a connecting portion extending outward beyond the bearing at one end away from the shaft column. The cylinder transmission bracket has a fixed cavity formed on the side away from the rotary table. The connecting portion extends into the fixed cavity and is fixed in the fixed cavity.

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