A centerless grinder

Abstract

The application belongs to the technical field of intelligent centerless grinding machine, and particularly relates to a centerless grinding machine for grinding air inlet and exhaust camshafts, which comprises a grinding machine shell and a grinding device, the grinding machine shell is provided with a workbench, and the grinding device comprises a main grinding wheel, an auxiliary grinding wheel, a main transmission guide wheel and an auxiliary guide wheel. The device is designed for grinding the rotating surface of a workpiece. The auxiliary grinding wheel and the auxiliary guide wheel are arranged to be capable of rotating asynchronously, so that the same equipment can be adapted to grinding of two different types of air inlet and exhaust camshafts, i.e. EB6.2 and EB6.2LTx, the universality and utilization rate of the equipment are improved, and the problem of functional limitation is reduced.

Description

Technical Field

[0001] This application belongs to the field of intelligent centerless grinding technology, and specifically relates to a centerless grinding machine. Background Technology

[0002] Centerless grinders are key equipment used for high-precision external cylindrical grinding of shaft parts, such as intake and exhaust camshafts of automobile engines. In modern automotive parts manufacturing, to meet the demands of market diversity and order flexibility, the same production line often needs to be able to quickly switch between and process multiple different types of workpieces.

[0003] Take the machining of intake and exhaust camshafts of models EB6.2 and EB6.2LTx as an example.

[0004] In the process of developing this application, the applicant discovered at least the following shortcomings in the relevant technology:

[0005] The existing grinding wheel, guide wheel and bracket structure is difficult to adapt to the grinding of two camshafts with different structures, resulting in functional limitations in use. Summary of the Invention

[0006] Based on the above-mentioned technical problems, this application provides a centerless grinder, which aims to at least partially solve the technical problem of functional limitations in the guide wheel and bracket structure.

[0007] In a first aspect, this application provides a centerless grinder for grinding different types of intake and exhaust camshafts. The grinder housing and grinding device include: the grinder housing has a worktable; the grinding device includes a main grinding wheel, auxiliary grinding wheels, a main drive guide wheel, and auxiliary guide wheels, wherein: the main grinding wheel, auxiliary grinding wheel, main drive guide wheel, and auxiliary guide wheels are all rotatably connected to the worktable of the grinder housing; for grinding two types of intake and exhaust camshafts, two auxiliary grinding wheels are coaxially arranged on both sides of the main grinding wheel, and two auxiliary guide wheels are coaxially arranged on both sides of the main drive guide wheel; the main grinding wheel, the intake and exhaust camshafts, and the central axis of the main drive guide wheel are arranged parallel; the intake and exhaust camshafts are disposed between the main grinding wheel and the main drive guide wheel; wherein: for different types of intake and exhaust camshafts, one pair of opposing auxiliary guide wheels and auxiliary grinding wheels are controlled to rotate; the other pair of opposing auxiliary guide wheels and auxiliary grinding wheels do not rotate.

[0008] In some embodiments, the grinding device further includes moving devices. Two of the moving devices are connected between the main grinding wheel and the auxiliary grinding wheel, and another two moving devices are connected between the main drive guide wheel and the auxiliary guide wheel. Each moving device includes a transmission component, a length adjusting component, and a driving component. The two length adjusting components can adjust the position between the transmission component and the main drive guide wheel of the main grinding wheel. The other two length adjusting components can also adjust the position between the transmission component and the main drive guide wheel of the main grinding wheel. The transmission component is used to transmit rotational power to drive the auxiliary guide wheel to rotate. The driving component is used to drive the auxiliary grinding wheel to change position and drive the auxiliary guide wheel to change position.

[0009] In some embodiments, the grinding device further includes a first connecting rod, and the length changing component includes a first staggered rod, a second staggered rod, and a first bolt. The first staggered rod is connected to the first connecting rod, two of the first connecting rods are respectively connected to the auxiliary guide wheel, and two other first connecting rods are respectively connected to the auxiliary grinding wheel. The second staggered rod is slidably connected to the first staggered rod, and the first bolt is threadedly connected to the second staggered rod and the first staggered rod.

[0010] In some embodiments, the transmission component includes a transmission tooth, a driven tooth, and a driven rod. The transmission tooth is connected to the second interleaved rod. Two driven teeth are respectively connected to both sides of the main grinding wheel, and two other driven teeth are connected to the main transmission guide wheel. Each driven tooth is connected to a driven rod, and the transmission tooth meshes with the driven tooth and the driven rod respectively.

[0011] In some embodiments, the grinding device further includes a second connecting rod and a first bearing. The driving component includes a horizontal plate, a screw, a moving block, and a first motor. The horizontal plate is connected to the worktable inside the grinding machine housing. The screw is rotatably connected to the horizontal plate. The first motor is connected to the horizontal plate and is connected to the screw via a rotating shaft. The moving block has a threaded hole, and the screw is inserted into the threaded hole of the moving block. The second connecting rod is connected to the moving block. The first bearing has an outer ring and an inner ring. The outer ring of the first bearing is connected to the second connecting rod. The inner rings of two of the first bearings are connected to auxiliary grinding wheels, and the inner rings of the other two first bearings are connected to auxiliary guide wheels.

[0012] In some embodiments, the grinding device further includes a starting device, which includes a second motor, a power shaft, a transmission chain, transmission gears, a second bearing, and a first bracket. The two power shafts are respectively connected to the main transmission guide wheel and the main grinding wheel. The ends of the power shafts are fixedly connected to the second bearings, which are rotatably connected to the worktable of the grinding machine housing via the first bracket. Transmission gears are connected to the power shafts near their ends. The second motor is connected to the worktable of the grinding machine housing, and the transmission chain is sleeved on the shaft of the second motor and the two transmission gears.

[0013] In some embodiments, the centerless grinder further includes a support device, which includes a support member and an adjusting member. The adjusting member is connected to the support member, and multiple sets of the support member and adjusting member are provided. The adjusting member can drive the support member to rise and fall.

[0014] In some embodiments, the bracket component includes a small bracket, a limiting groove, and a limiting hole. The small bracket is connected to the adjusting component. The small bracket has a limiting hole and a limiting groove. The bracket device also includes a limiting member, which includes a limiting rod, a placement groove, a torsion spring, and protrusions. The limiting rod is connected to the worktable of the grinding machine housing. The limiting rod has a placement groove. Two protrusions are inserted into the placement groove of the limiting rod. A torsion spring connects the two protrusions to the limiting rod.

[0015] In some embodiments, the adjusting element includes a threaded seat, a second bolt, a limiting ring, and a limiting circle. The threaded seat is connected to the worktable of the grinding machine housing, the second bolt is threaded into the threaded seat, the limiting circle is connected to the top of the second bolt, the limiting ring is connected to the small bracket, and the second bolt is inserted into the limiting ring through the limiting circle.

[0016] In some embodiments, the centerless grinder further includes a liquid spraying device, which includes a water tank, a water pump, a water pipe, and a spray nozzle. The water pump is connected to the water tank, one end of the water pipe is connected to the water pump, and the other end of the water pipe is connected to the spray nozzle, which is used to spray liquid.

[0017] The centerless grinder provided in this application is a device designed for grinding the rotating surface of a workpiece. By setting an asynchronously rotating auxiliary grinding wheel and an auxiliary guide wheel, the same machine can be adapted to grind two different models of intake and exhaust camshafts, namely EB6.2 and EB6.2LTx, thereby improving the versatility and utilization of the equipment and reducing the problem of functional limitations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a centerless grinder 10 according to one or more embodiments of this application is shown;

[0020] Figure 2 It shows Figure 1 A schematic diagram of the structure of the grinding device 300;

[0021] Figure 3 It shows Figure 2 Enlarged diagram of section A in the middle;

[0022] Figure 4 It shows Figure 2 A schematic diagram of the structure of the drive component 364, the second connecting rod 365, and the first bearing 366;

[0023] Figure 5 It shows Figure 2 A schematic diagram of the starting device 330 in the middle;

[0024] Figure 6 A schematic diagram of the assembly of the moving device 360 ​​with the main grinding wheel 310 and the main drive guide wheel 340 is shown.

[0025] Figure 7 It shows Figure 1 A schematic diagram of the bracket device 400;

[0026] Figure 8 It shows Figure 7 A schematic diagram of the structure of the bracket 410 and the adjusting component 430 in the middle;

[0027] Figure 9 It shows Figure 8 Enlarged schematic diagram of part B in the diagram;

[0028] Figure 10 A schematic diagram of the assembly of the starting device 330 with the main grinding wheel 310 and the main drive guide wheel 340 is shown.

[0029] Figure 11 A schematic diagram of the structure of the water nozzle 240 is shown;

[0030] Figure 12 A schematic diagram of the structure of the grinding machine housing 100 is shown;

[0031] Figure 13A schematic diagram of the structure of the centerless grinder 10, along with its mechanical gripper and other processing devices, is shown.

[0032] Figure 14 It shows Figure 13 Another perspective illustration;

[0033] Figure 15 A schematic diagram of the mechanical gripper is shown.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. Centerless grinder;

[0036] 100. Grinding machine housing; 110. Protective housing; 120. Base; 130. Mounting housing; 140. Adjustment port;

[0037] 200. Liquid spraying device; 210. Water tank; 220. Water pump; 230. Water pipe; 240. Spray nozzle;

[0038] 300. Grinding device; 310. Main grinding wheel; 320. Auxiliary grinding wheel; 330. Starting device; 331. Second motor; 332. Power shaft; 333. Transmission chain; 334. Transmission gear; 335. Second bearing; 336. First bracket; 340. Main transmission guide wheel; 350. Auxiliary guide wheel; 360. Moving device; 361. Length changing component; 3611. First interlacing rod; 3612. Second interlacing rod; 3613. First bolt; 362. Transmission component; 3621. Transmission gear; 3622. Driven gear; 3623. Driven rod; 363. First connecting rod; 364. Driving component; 3641. Horizontal plate; 3642. Screw; 3643. Moving block; 3644. First motor; 365. Second connecting rod; 366. First bearing;

[0039] 400. Bracket assembly; 410. Bracket component; 411. Small bracket; 412. Limiting groove; 413. Limiting hole; 420. Limiting component; 421. Limiting rod; 422. Placement slot; 423. Torsion spring; 424. Protrusion; 430. Adjusting component; 431. Threaded seat; 432. Second bolt; 433. Limiting ring; 434. Limiting circle; 440. Axial positioner;

[0040] 500. Intake and exhaust camshafts. Detailed Implementation

[0041] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] The OP70 centerless grinder is a key piece of equipment in CNAIC's automotive parts production line, producing both EB6.2 intake and exhaust products and Euro 7 EB2LTx intake and exhaust products. According to the previous centerless grinder design, the workpieces were oriented in one direction, making it impossible to achieve compatibility between the two products.

[0043] The original structure of the centerless grinder, including the grinding wheel, grinding guide wheel, and grinding bracket, could only produce one type of product. Each time a new product was produced, it took 5-7 days to remove all the machine tool components—including the bracket, loading mechanism, grinding wheel, and grinding guide wheel—using a crane, and then to install the structure for the new product. This was time-consuming, labor-intensive, and resource-intensive, representing a major pain point and challenge in the production workshop.

[0044] The existing system requires 5-7 days and two people to complete a changeover, resulting in a 5-7 day production line downtime. The newly designed grinding machine system can complete the changeover in just a few hours using centerless grinding, greatly reducing the losses caused by long changeover times and meeting the customer's needs.

[0045] Based on a weekly production capacity of 6,600 sets, the changeover loss is 550 sets, which is a reduction of 2,750 sets of production capacity compared to before optimization. Assuming a 6-day work week, this represents a 5-fold saving.

[0046] A centerless grinder in the related technology has at least the following problems when in use:

[0047] Firstly, traditional centerless grinders are typically designed and tuned for specific workpiece models. When grinding different models, such as the EB6.2 and EB6.2LTx intake and exhaust camshafts, these two products differ in structural dimensions, particularly the position and shape of the thrust discs at the head and tail ends. Traditional centerless grinder designs typically use specialized designs and fixed installations for the specific contours of a single workpiece model, including grinding wheels, guide wheels, and supports. When switching from producing one model to another, the machine must be shut down and extensively modified. This involves using a crane to remove the original set of grinding wheels, guide wheels, spacers, supports, and positioning blocks from the machine, and then installing a new set of components specifically designed for the new model. This process not only involves heavy physical handling but also requires re-balancing the grinding wheel and guide wheel sets statically and dynamically after the replacement to ensure grinding accuracy. According to actual production records, completing such a complete changeover takes as long as 5 to 7 days, causing the production line to be completely shut down during this period, resulting in serious capacity loss. At the same time, it consumes a lot of manpower and material resources, greatly increasing production costs. This has become a significant bottleneck restricting production flexibility and responding to customers' rapid delivery needs.

[0048] Secondly, when grinding workpieces with non-cylindrical profiles, such as camshafts, traditional integral or fixed-height supports struggle to provide effective support at different axial positions. This can easily lead to workpiece vibration or displacement during grinding, affecting grinding accuracy and surface quality.

[0049] Furthermore, in existing technologies, the position adjustment mechanisms for auxiliary support wheels, such as auxiliary grinding wheels and auxiliary guide wheels, may be quite complex to accommodate workpieces of different lengths, or require manual disassembly and reassembly after machine shutdown. This adjustment method is not only time-consuming and labor-intensive, but also makes it difficult to achieve fast and accurate positioning, limiting the flexible expansion of the equipment's processing range.

[0050] Ultimately, critical wear parts of the grinding machine, such as grinding wheels and guide wheels, need to be replaced after they wear out. If these components are fixed or have complex connections, the replacement process will be time-consuming, increasing downtime for equipment maintenance and affecting the efficiency of continuous production operations.

[0051] Figure 1 A schematic diagram of the structure of a centerless grinder 10 according to one or more embodiments of this application is shown. Figure 2 It shows Figure 1A schematic diagram of the grinding device 300 is provided in this application. The centerless grinder 10 is used for grinding different types of intake and exhaust camshafts 500. The grinding device 300 includes a grinding machine housing 100 with a worktable, and the grinding device 300 includes a main grinding wheel 310, an auxiliary grinding wheel 320, a main drive guide wheel 340, and an auxiliary guide wheel 350. The main grinding wheel 310, auxiliary grinding wheel 320, main drive guide wheel 340, and auxiliary guide wheel 350 are all rotatably connected to the worktable of the grinding machine housing 100. For two types of intake and exhaust camshafts 500... In the model grinding process, two auxiliary grinding wheels 320 are coaxially arranged on both sides of the main grinding wheel 310, and two auxiliary guide wheels 350 are coaxially arranged on both sides of the main drive guide wheel 340. The main grinding wheel 310, the intake and exhaust camshafts 500 and the main drive guide wheel 340 are arranged parallel to the central axis. The intake and exhaust camshafts 500 are located between the main grinding wheel 310 and the main drive guide wheel 340. For different models of intake and exhaust camshafts 500, one pair of opposing auxiliary guide wheels 350 and auxiliary grinding wheels 320 are controlled to rotate; the other pair of opposing auxiliary guide wheels 350 and auxiliary grinding wheels 320 do not rotate.

[0052] When the centerless grinder 10 of this application is used, the grinder housing 100 is also provided with a control device to control each device. The program can be preset to intelligently grind the intake and exhaust camshafts 500. The intake and exhaust camshafts 500 have two models: EB6.2 intake and exhaust camshafts and EB6.2LTx intake and exhaust camshafts.

[0053] When grinding the EB6.2 intake and exhaust camshafts, the main grinding wheel 310 and the main drive guide wheel 340 rotate, the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 on one side rotate, and the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 on the other side do not rotate. The main drive guide wheel 340 and the auxiliary guide wheel 350 rub against the EB6.2 intake and exhaust camshafts, which will cause them to rotate. The main grinding wheel 310 and the auxiliary grinding wheel 320 grind the EB6.2 intake and exhaust camshafts.

[0054] When grinding the EB6.2LTx intake and exhaust camshafts, the main grinding wheel 310 and the main drive guide wheel 340 rotate, while the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 on the other side rotate. The auxiliary grinding wheel 320 and the auxiliary guide wheel 350 on one side do not rotate. The main drive guide wheel 340 and the auxiliary guide wheel 350 rub against the EB6.2 intake and exhaust camshafts, causing them to rotate. The main grinding wheel 310 and the auxiliary grinding wheel 320 grind the EB6.2 intake and exhaust camshafts.

[0055] The main grinding wheel 310, auxiliary grinding wheel 320, main drive guide wheel 340 and auxiliary guide wheel 350 of this application are all detachable and can be replaced according to the required application scenario.

[0056] The specific details of a centerless grinder 10 provided in this application will now be further described with reference to the accompanying drawings.

[0057] Figure 3 It shows Figure 2 Enlarged diagram of section A in the middle. Figure 4 It shows Figure 2 The structural diagram of the driving component 364, the second connecting rod 365, and the first bearing 366 is shown in the figure. Figure 2 , Figure 4 as well as Figure 3 In some embodiments, the grinding device 300 further includes moving devices 360. Two moving devices 360 are connected between the main grinding wheel 310 and the auxiliary grinding wheel 320, and two other moving devices 360 are connected between the main drive guide wheel 340 and the auxiliary guide wheel 350. Each moving device 360 ​​includes a transmission component 362, a length adjusting component 361, and a driving component 364. The two length adjusting components 361 can adjust the position between the transmission component 362 and the main grinding wheel 310 and the main drive guide wheel 340. The two length adjusting components 361 can also adjust the position between the transmission component 362 and the main grinding wheel 310 and the main drive guide wheel 340. The transmission component 362 transmits rotational power to drive the auxiliary guide wheel 350 to rotate, and the driving component 364 drives the auxiliary grinding wheel 320 to change position, and the driving component 364 drives the auxiliary guide wheel 350 to change position. In operation, the gears inside the transmission component 362 mesh to drive the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 to rotate. The length changing component 361 can drive the transmission component 362 to change the meshing length, adapting to different sizes of intake and exhaust camshafts 500. The driving component 364 can drive the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 to change position. When adapting to different models of intake and exhaust camshafts 500, it can drive the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 on different sides to move. The driving component 364 can also make the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 adapt to different sizes of intake and exhaust camshafts 500. In other embodiments, two driving components 364 can be provided between the grinding device 300 and the worktable of the grinding machine housing 100, thereby changing the distance between the main grinding wheel 310 and the main transmission guide wheel 340, adapting to intake and exhaust camshafts 500 with different diameters.

[0058] Combination Figure 3 , Figure 4 as well as Figure 2In some embodiments, the grinding device 300 further includes a first connecting rod 363, and a length changing component 361 includes a first interlaced rod 3611, a second interlaced rod 3612, and a first bolt 3613. The first interlaced rod 3611 is connected to the first connecting rod 363, the two first connecting rods 363 are respectively connected to the auxiliary guide wheel 350, and the other two first connecting rods 363 are respectively connected to the auxiliary grinding wheel 320. The second interlaced rod 3612 is slidably connected to the first interlaced rod 3611, and the first bolt 3613 is threadedly connected to the second interlaced rod 3612. The second interleaved rod 3612 can slide on the first interleaved rod 3611 via the interleaved rod 3612, thereby changing the sliding distance of the second interleaved rod 3612 on the first interleaved rod 3611, and thus changing the position of the transmission component 362. When encountering a long intake and exhaust camshaft 500, the length of the auxiliary guide wheel 350 and auxiliary grinding wheel 320 from the main drive guide wheel 340 and main grinding wheel 310 can be changed by adjusting the length change component 361, thereby adapting to use and increasing the processing range.

[0059] In the above embodiment, the transmission component 362 includes a transmission gear 3621, a driven gear 3622, and a driven rod 3623. The transmission gear 3621 is connected to the second interlaced rod 3612. Two driven gears 3622 are respectively connected to both sides of the main grinding wheel 310, and two other driven gears 3622 are connected to the main transmission guide wheel 340. Each driven gear 3622 is connected to a driven rod 3623. The transmission gear 3621 meshes with the driven gear 3622 and the driven rod 3623 respectively. The transmission gear 3621 is driven to move, and the transmission gear 3622... When the driven gear 3622 and driven rod 3623 move to the driven gear 3622 and driven rod 3623, the power generated by the driven gear 3622 and driven rod 3623 during rotation will drive the transmission gear 3621 to rotate. The axis of the transmission gear 3621 is on the axis of the auxiliary guide wheel 350 and the auxiliary grinding wheel 320, which will drive the auxiliary guide wheel 350 and the auxiliary grinding wheel 320 to rotate. The driving component 364 will change the position of the transmission gear 3621, and thus change the position of the auxiliary guide wheel 350 or the auxiliary grinding wheel 320, so as to make it suitable for the intake and exhaust camshafts 500 of different lengths.

[0060] In the above embodiment, the grinding device 300 further includes a second connecting rod 365 and a first bearing 366. The driving component 364 includes a horizontal plate 3641, a screw 3642, a moving block 3643, and a first motor 3644. The horizontal plate 3641 is connected to the worktable of the grinding machine housing 100. The screw 3642 is rotatably connected to the horizontal plate 3641. The first motor 3644 is connected to the horizontal plate 3641 and is connected to the screw 3642 through a rotating shaft. The moving block 3643 has a threaded hole, and the screw 3642 is inserted into the moving block 3643. In the threaded hole of block 3643, the second connecting rod 365 is connected to the moving block 3643. The first bearing 366 has an outer ring and an inner ring. The outer ring of the first bearing 366 is connected to the second connecting rod 365. The inner rings of two of the first bearings 366 are connected to the auxiliary grinding wheel 320, and the inner rings of the other two first bearings 366 are connected to the auxiliary guide wheel 350. With the connection of the second connecting rod 365 and the first bearings 366, the driving component 364 can drive the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 to change their position while maintaining the normal rotation of the auxiliary grinding wheel 320 and the auxiliary guide wheel 350.

[0061] Figure 5 It shows Figure 2 A schematic diagram of the starting device 330 in the diagram. Figure 6 This diagram shows the assembly of the moving device 360 ​​with the main grinding wheel 310 and the main drive guide wheel 340. Figure 2 , Figure 6 as well as Figure 5 In some embodiments, the grinding device 300 further includes a starting device 330, which includes a second motor 331, a power shaft 332, a transmission chain 333, a transmission gear 334, a second bearing 335, and a first bracket 336. The two power shafts 332 are respectively connected to the main transmission guide wheel 340 and the main grinding wheel 310. The ends of the power shafts 332 are fixedly connected to the second bearings 335. The second bearings 335 are rotatably connected to the worktable of the grinding machine housing 100 through the first bracket 336. The power shafts 332 are located near the ends. Each position is connected to a transmission gear 334. The second motor 331 is connected to the worktable of the grinding machine housing 100. The transmission chain 333 is sleeved on the rotating shaft of the second motor 331 and the two transmission gears 334. When the second motor 331 is powered on, it will drive the transmission gears 334 to rotate through the transmission chain 333, which in turn drives the two power shafts 332 to rotate. The rotation of the power shafts 332 will drive the main drive guide wheel 340 and the main grinding wheel 310 to rotate. The inner ring of the first bearing 366 is provided with a hole, and the size of the hole is larger than the diameter of the power shaft 332.

[0062] Figure 7 It shows Figure 1A schematic diagram of the structure of the bracket device 400 is shown. In some embodiments, the centerless grinder 10 also includes a bracket device 400, which includes a bracket member 410, an axial positioner 440, and an adjusting member 430. The axial positioner 440 is connected to the worktable of the grinder housing 100, and the adjusting member 430 is connected to the bracket member 410. Multiple sets of bracket members 410 and adjusting members 430 are provided. The adjusting member 430 can drive the bracket member 410 to rise and fall, dividing the traditional arrangement into multiple parts. When dealing with different sizes of intake and exhaust camshafts 500, the height of a single bracket member 410 can be changed by adjusting the adjusting member 430 to adapt to different sizes of intake and exhaust camshafts 500. When the axial positioner 440 is powered on, it will drive its own shaft to extend and retract closer to the end of the intake and exhaust camshaft 500. When dealing with different models of intake and exhaust camshafts 500 in this application:

[0063] When dealing with the EB6.2 intake and exhaust camshafts, the rear bracket 410 on one side is raised, and the head end face of the EB6.2 intake and exhaust camshaft is close to the raised rear bracket 410. At this time, the raised rear bracket 410 serves as the positioning reference for the EB6.2 intake and exhaust products. The axial positioner 440 can clamp the rear end face of the EB6.2 intake and exhaust camshaft from the opposite side. Of course, when dealing with EB6.2 intake and exhaust camshafts of different sizes, other brackets 410 can be raised to serve as positioning references.

[0064] For the EB6.2LTx intake and exhaust camshafts, the rear bracket 410 on the other side is raised, and the rear end face of the EB6.2LTx intake and exhaust camshafts is close to the raised rear bracket 410. At this time, the raised rear bracket 410 serves as the positioning reference for the EB6.2LTx intake and exhaust products. The axial positioner 440 can clamp the head end face of the EB6.2LTx intake and exhaust camshafts from the opposite side. Of course, when dealing with EB6.2LTx intake and exhaust camshafts of different sizes, other brackets 410 can be raised to serve as positioning references.

[0065] Each bracket 410 in this application can be adjusted to a different height to adapt to the diameter of different positions of the intake and exhaust camshafts 500, thereby increasing the fit of the intake and exhaust camshafts 500. It is equivalent to one end of the intake and exhaust camshafts 500 being limited by the bracket 410 and the other end being limited by the axial positioner 440, thereby preventing the intake and exhaust camshafts 500 from moving. In other embodiments, a driving member 364 is also provided between the axial positioner 440 and the grinding machine housing 100, thereby changing the position of the axial positioner 440 to adapt to intake and exhaust camshafts 500 of different sizes. Of course, the intake and exhaust camshafts 500 can also be directly limited by two axial positioners 440, which is not limited in this application.

[0066] Figure 8 It shows Figure 7 The structural diagram of the bracket 410 and the adjusting member 430 is shown in the figure. Figure 8 as well as Figure 7 In some embodiments, the bracket component 410 includes a small bracket 411, a limiting groove 412, and a limiting hole 413. The small bracket 411 is connected to the adjusting component 430. The limiting hole 413 is provided in the small bracket 411, and the limiting groove 412 is provided in the limiting hole 413 of the small bracket 411. The bracket device 400 also includes a limiting component 420, which includes a limiting rod 421, a placement groove 422, a torsion spring 423, and protrusions 424. The limiting rod 421 is connected to the worktable of the grinding machine housing 100. The limiting rod 421 has a placement groove 422, and two protrusions 424 are inserted into the placement groove 422 of the limiting rod 421. In section 2, a torsion spring 423 connects the two protrusions 424 and the limiting rod 421. Under the elasticity of the torsion spring 423, the two protrusions 424 move outward and get stuck in the limiting groove 412, thereby limiting the small bracket 411 to a small extent. The limiting rod 421 passes through the limiting hole 413 and then limits the small bracket 411 again, reducing the change of position of the small bracket 411 during the grinding of the intake and exhaust camshaft 500 and avoiding damage to the grinding quality of the intake and exhaust camshaft 500. The protrusions on the small bracket 411 serve to limit the intake and exhaust camshaft 500.

[0067] Figure 9 It shows Figure 8 The enlarged schematic diagram of part B in the above embodiment shows that the adjusting component 430 includes a threaded seat 431, a second bolt 432, a limiting ring 433, and a limiting circle 434. The threaded seat 431 is connected to the worktable of the grinding machine housing 100. The second bolt 432 is threadedly connected to the threaded seat 431. The limiting circle 434 is connected to the top of the second bolt 432. The limiting ring 433 is connected to the small bracket 411. The second bolt 432 is inserted into the limiting ring 433 through the limiting circle 434. When the second bolt 432 rotates in the threaded seat 431, it will drive the small bracket 411 to rise and fall. The limiting circle 434 is locked in the limiting ring 433. While maintaining the rotation that can drive the small bracket 411 to rise and fall, it also avoids driving the small bracket 411 to rotate together.

[0068] Figure 10 The diagram shows the assembly of the starting device 330 with the main grinding wheel 310 and the main drive guide wheel 340. Figure 10 Used to demonstrate the assembly position of the starting device 330 with the main grinding wheel 310 and the main drive guide wheel 340;

[0069] Figure 11 A schematic diagram of the structure of the water nozzle 240 is shown. Figure 12 A schematic diagram of the structure of the grinding machine housing 100 is shown, combined with Figure 11 as well as Figure 12 In some embodiments, the centerless grinder 10 further includes a liquid spraying device 200, which includes a water tank 210, a water pump 220, a water pipe 230, and a spray nozzle 240. The water pump 220 is connected to the water tank 210, one end of the water pipe 230 is connected to the water pump 220, and the other end of the water pipe 230 is connected to the spray nozzle 240. The spray nozzle 240 is used to spray liquid. The required liquid is added to the water tank 210 in advance, and then the water pump 220 sprays liquid onto the intake and exhaust camshaft 500 through the spray nozzle 240.

[0070] In the above embodiment, the grinding machine housing 100 includes a protective shell 110, a base 120, a mounting shell 130, and an adjustment port 140. The mounting shell 130 is connected to the base 120, and the protective shell 110 is connected to the mounting shell 130. The mounting shell 130 has an adjustment port 140 for the operator to adjust the bracket device 400. The water nozzle 240 is connected to the protective shell 110 and sprays liquid onto the intake and exhaust camshaft 500. The mounting shell 130 is the worktable of the grinding machine housing 100.

[0071] Figure 13 A schematic diagram of the structure of the centerless grinder 10, along with its mechanical gripper and other machining devices, is shown. Figure 14 It shows Figure 13 Another perspective illustration, Figure 15 A schematic diagram of the mechanical gripper is shown. Figure 13 and Figure 14 This was used to demonstrate the working environment in which this application is based, as well as some of the devices used in conjunction with it. Figure 15 The mechanical gripper is shown, but this is only for demonstrating the environment in which this application is used. In actual use, the corresponding device and mechanical gripper can be replaced.

[0072] The centerless grinding machine 10 of this application has at least the following beneficial effects:

[0073] By setting an asynchronously rotating auxiliary grinding wheel 320 and an auxiliary guide wheel 350, and combining them with a movable drive component 364, the same equipment can be adapted to grind two different models of intake and exhaust camshafts 500, namely EB6.2 and EB6.2LTx, thereby improving the equipment's versatility and utilization.

[0074] The length-changing component 361 in the moving device 360, "composed of a first interlacing rod 3611, a second interlacing rod 3612 and a first bolt 3613", can adjust the positional distance between the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 relative to the main grinding wheel 310 and the main drive guide wheel 340, thereby effectively adapting to intake and exhaust camshafts 500 of different lengths and expanding the processing range of the equipment.

[0075] Through the meshing transmission of the transmission component 362 (including the transmission gear 3621, the driven gear 3622, and the driven rod 3623) and the setting of the first bearing 366, the axial position of the auxiliary grinding wheel 320 and the auxiliary guide wheel 350 can still be independently adjusted by the drive component 364 while obtaining rotational power, thus ensuring transmission reliability and position adjustment flexibility.

[0076] The bracket device 400 employs multiple independent bracket components 410 and adjusting components 430, allowing for individual height adjustment of each small bracket 411 to better conform to the irregular contours of the intake and exhaust camshafts 500. Simultaneously, by adjusting the height of the bracket components 410 at different side tails, end-face positioning references can be provided for different camshaft models, improving the accuracy and convenience of clamping and positioning.

[0077] The bracket 410 is connected to the grinding machine housing 100 through the limiting member 420 (including the limiting rod 421 and the protrusion 424 acted by the torsion spring 423), which realizes multiple limiting of the small bracket 411, effectively preventing it from displaced or vibrating during the grinding process, and ensuring the stability of the grinding process and the quality of the workpiece.

[0078] The main grinding wheel 310, auxiliary grinding wheel 320, main drive guide wheel 340 and auxiliary guide wheel 350 are all detachable, which makes it easy to replace them according to wear or different processing requirements, reducing maintenance costs and extending the service life of the equipment.

[0079] The adjustment port 140 provided on the grinding machine housing 100 facilitates the operation and adjustment of the internal support device 400 by the operator. At the same time, the liquid spraying device 200 can effectively supply cooling or lubricating liquid to the grinding area, which helps to improve the processing environment and improve the processing quality. The grinding machine housing 100 is also equipped with a control device to control various devices and can preset programs for intelligent grinding of the intake and exhaust camshafts 500.

[0080] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0081] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0082] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0083] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0084] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A centerless grinding machine for grinding intake and exhaust camshafts (500) of different models, characterized in that, include: A grinding machine housing (100) having a worktable; A grinding device (300) includes a main grinding wheel (310), an auxiliary grinding wheel (320), a main drive guide wheel (340), and an auxiliary guide wheel (350), wherein: The main grinding wheel (310), auxiliary grinding wheel (320), main drive guide wheel (340), and auxiliary guide wheel (350) are all rotatably connected to the worktable of the grinding machine housing (100). For the grinding of the two types of intake and exhaust camshafts (500), the two auxiliary grinding wheels (320) are coaxially arranged on both sides of the main grinding wheel (310), and the two auxiliary guide wheels (350) are coaxially arranged on both sides of the main drive guide wheel (340). The main grinding wheel (310), the intake and exhaust camshafts (500), and the main drive guide wheel (340) are arranged parallel to the central axis. The intake and exhaust camshafts (500) are located between the main grinding wheel (310) and the main drive guide wheel (340). For different models of intake and exhaust camshafts (500), one pair of opposing auxiliary guide wheels (350) and auxiliary grinding wheels (320) are controlled to rotate; the other pair of opposing auxiliary guide wheels (350) and auxiliary grinding wheels (320) do not rotate. The grinding device (300) also includes a moving device (360). Two of the moving devices (360) are connected between the main grinding wheel (310) and the auxiliary grinding wheel (320), and two other moving devices (360) are connected between the main drive guide wheel (340) and the auxiliary guide wheel (350). Each moving device (360) includes a transmission component (362), a length adjusting component (361), and a driving component (364). The two length adjusting components (361) can adjust the transmission component (362) and the main drive guide wheel (310) of the main grinding wheel (320). The position between the wheels (340) and the two length changing parts (361) can also adjust the position between the transmission part (362) and the main grinding wheel (310) and the main drive guide wheel (340). The transmission part (362) is used to transmit rotational power to drive the auxiliary guide wheel (350) to rotate. The transmission part (362) is used to transmit rotational power to drive the auxiliary grinding wheel (320) to rotate. The drive part (364) is used to drive the auxiliary grinding wheel (320) to change position. The drive part (364) is used to drive the auxiliary guide wheel (350) to change position. The grinding device (300) further includes a first connecting rod (363), and the length changing component (361) includes a first interlaced rod (3611), a second interlaced rod (3612), and a first bolt (3613). The first interlaced rod (3611) is connected to the first connecting rod (363), the two first connecting rods (363) are respectively connected to the auxiliary guide wheel (350), and the other two first connecting rods (363) are respectively connected to the auxiliary grinding wheel (320). The second interlaced rod (3612) is slidably connected to the first interlaced rod (3611), and the first bolt (3613) is threadedly connected to the second interlaced rod (3612) and the first interlaced rod (3611). The transmission component (362) includes a transmission tooth (3621), a driven tooth (3622), and a driven rod (3623). The transmission tooth (3621) is connected to the second interleaved rod (3612). Two driven teeth (3622) are respectively connected to both sides of the main grinding wheel (310), and two other driven teeth (3622) are connected to the main transmission guide wheel (340). Each driven tooth (3622) is connected to a driven rod (3623). The transmission tooth (3621) meshes with the driven tooth (3622) and the driven rod (3623) respectively. The centerless grinder (10) also includes a support device (400), which includes a support component (410), an axial positioner (440), and an adjusting component (430). The axial positioner (440) is connected to the worktable of the grinder housing (100), and the adjusting component (430) is connected to the support component (410). Multiple sets of the support component (410) and the adjusting component (430) are provided, and the adjusting component (430) can drive the support component (410) to rise and fall.

2. The centerless grinding machine according to claim 1, characterized in that, The grinding device (300) further includes a second connecting rod (365) and a first bearing (366). The driving component (364) includes a horizontal plate (3641), a screw (3642), a moving block (3643), and a first motor (3644). The horizontal plate (3641) is connected to the worktable of the grinding machine housing (100). The screw (3642) is rotatably connected to the horizontal plate (3641). The first motor (3644) is connected to the horizontal plate (3641). The first motor (3644) is connected to the screw via a rotating shaft. (3642) Connection, the movable block (3643) is provided with a threaded hole, and the screw (3642) is inserted into the threaded hole of the movable block (3643). The second connecting rod (365) is connected to the movable block (3643). The first bearing (366) has an outer ring and an inner ring. The outer ring of the first bearing (366) is connected to the second connecting rod (365). The inner rings of two of the first bearings (366) are connected to the auxiliary grinding wheel (320), and the inner rings of the other two first bearings (366) are connected to the auxiliary guide wheel (350).

3. A centerless grinding machine according to claim 2, characterized in that, The grinding device (300) also includes a starting device (330), which includes a second motor (331), a power shaft (332), a transmission chain (333), a transmission gear (334), a second bearing (335), and a first bracket (336). The two power shafts (332) are respectively connected to the main transmission guide wheel (340) and the main grinding wheel (310). The ends of the power shafts (332) are fixedly connected to the second bearings (335). The second bearings (335) are rotatably connected to the worktable of the grinding machine housing (100) through the first bracket (336). The power shafts (332) are connected to the transmission gears (334) near their ends. The second motor (331) is connected to the worktable of the grinding machine housing (100). The transmission chain (333) is sleeved on the rotating shaft of the second motor (331) and the two transmission gears (334).

4. A centerless grinding machine according to claim 3, characterized in that, The bracket component (410) includes a small bracket (411), a limiting groove (412), and a limiting hole (413). The small bracket (411) is connected to the adjusting component (430). The limiting hole (413) is provided in the small bracket (411), and the limiting groove (412) is provided in the limiting hole (413) of the small bracket (411). The bracket device (400) also includes a limiting component (420). The limiting component (420) includes a limiting groove (412). The device consists of a positioning rod (421), a placement groove (422), a torsion spring (423), and protrusions (424). The positioning rod (421) is connected to the worktable of the grinding machine housing (100). The positioning rod (421) has a placement groove (422). Two protrusions (424) are inserted into the placement groove (422) of the positioning rod (421). A torsion spring (423) connects the two protrusions (424) to the positioning rod (421).

5. A centerless grinding machine according to claim 4, characterized in that, The adjusting component (430) includes a threaded seat (431), a second bolt (432), a limiting ring (433), and a limiting circle (434). The threaded seat (431) is connected to the worktable of the grinding machine housing (100). The second bolt (432) is threaded into the threaded seat (431). The limiting circle (434) is connected to the top of the second bolt (432). The limiting ring (433) is connected to the small bracket (411). The second bolt (432) is inserted into the limiting ring (433) through the limiting circle (434).

6. A centerless grinding machine according to claim 1, characterized in that, The centerless grinder (10) also includes a liquid spraying device (200), which includes a water tank (210), a water pump (220), a water pipe (230), and a spray nozzle (240). The water pump (220) is connected to the water tank (210), one end of the water pipe (230) is connected to the water pump (220), and the other end of the water pipe (230) is connected to the spray nozzle (240). The spray nozzle (240) is used to spray liquid.

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