Bearing inner ring manufacturing equipment and control method

Abstract

The present invention relates to a bearing inner ring manufacturing device and a control method, comprising a frame, a clamping device arranged on the frame for mounting the bearing inner ring, and a grinding device arranged on the frame for grinding the bearing inner ring; the grinding device comprises a driving mechanism, a rotating shaft arranged on the driving mechanism and driven to rotate by the driving mechanism, a grinding wheel sleeved on the rotating shaft, a spray disc sleeved on the rotating shaft for spraying cutting fluid, and a water supply structure; the rotating shaft comprises a rod body and an end cover threadedly connected to the end of the rod body and pressing the spray disc against the grinding wheel; The water supply structure includes a first water channel opened in the rod body, a second water channel opened in the end cover and connected to the first water channel, and a third water channel opened in the spray plate and connected to the second water channel, the third water channel runs through the spray plate and the outlet of the third water channel is inclined toward the grinding wheel; a sliding path is radially opened in the spray plate and the sliding path is connected to the third water channel, a blocking component for cutting off and blocking the third water channel is arranged in the sliding path, and the blocking component includes a blocking block sliding on the sliding path and an abutting spring driving the blocking block to slide radially and always block the third water channel. Through the above structure, the rational use of the chip fluid is realized, and it is not easy to cause waste of the chip fluid.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing, and in particular to a bearing inner ring manufacturing device and a control method. Background Art

[0002] The manufacturing process of bearings includes steps such as raw material preparation, forging, heat treatment, turning and grinding. Among them, the grinding step is mainly for processing the grooves of the inner and outer rings of the bearings, and the grooves are used for ball arrangement.

[0003] The groove of the inner ring of the bearing is usually processed by a machine tool, which is provided with a clamping device for mounting the inner ring of the bearing and a grinding device for grinding the inner ring of the bearing. When the inner ring of the bearing is being ground, the contact surface between the inner ring of the bearing and the grinding wheel needs to be continuously sprayed with cutting fluid. In the prior art, the cutting fluid is continuously sprayed during the whole process of machine tool processing. Even if the workpiece is finished being processed, the cutting fluid will not stop spraying unless the machine tool equipment stops running, which will cause a large amount of cutting fluid waste and needs to be improved. Summary of the invention

[0004] In order to reduce the waste of cutting fluid, the present invention provides a bearing inner ring manufacturing device and a control method.

[0005] First aspect:

[0006] The present invention provides a bearing inner ring manufacturing device, which adopts the following technical solution:

[0007] A bearing inner ring manufacturing device comprises a frame, a clamping device arranged on the frame for mounting the bearing inner ring, and a grinding device arranged on the frame for grinding the bearing inner ring;

[0008] The grinding device comprises a driving mechanism, a rotating shaft arranged on the driving mechanism and driven to rotate by the driving mechanism, a grinding wheel sleeved on the rotating shaft, a spray plate sleeved on the rotating shaft for spraying cutting fluid, and a water supply structure; the rotating shaft comprises a rod body and an end cover which is threadedly connected to the end of the rod body and presses the spray plate against the grinding wheel;

[0009] The water supply structure includes a first water channel opened in the rod body, a second water channel opened in the end cover and connected to the first water channel, and a third water channel opened in the spray plate and connected to the second water channel, wherein the third water channel runs through the spray plate and an outlet of the third water channel is inclined toward the grinding wheel;

[0010] A sliding path is radially opened in the spray disc and the sliding path is connected to the third water channel. A sealing component for cutting off and sealing the third water channel is arranged in the sliding path. The sealing component includes a sealing block that slides on the sliding path and an abutment spring that drives the sealing block to slide radially and always seal the third water channel.

[0011] By adopting the above technical solution, by setting the first water channel, the second water channel and the water channel in the grinding device, and setting the blocking assembly in the third water channel, when the grinding wheel is not rotating, the abutment spring can drive the blocking block to block the third water channel, and the cutting fluid cannot be sprayed out from the spray disc at this time, and when the grinding wheel rotates at high speed, the blocking block of the blocking assembly can overcome the effect of the abutment spring under the action of centrifugal force and move outward along the radial direction of the rotating shaft, and the blocking block opens the third water channel, and the cutting fluid can flow out from the third water channel. Through the above structure, the rational use of the cutting fluid is realized, and it is not easy to cause the waste of the cutting fluid.

[0012] The second water channel is arranged on the end cover, which can not only press the spray disc and the grinding wheel onto the rod body, but also connect the first water channel and the third water channel. When the grinding device is not in use, the end cover can be removed to clean the first water channel in the rod body, which is more convenient.

[0013] Optionally, the grinding device further has an air supply structure, the air supply structure includes a first air path opened in the rod body and a second air path opened in the spray plate, the second air path is connected to the first air path, the second air path passes through the spray plate and the outlet of the second air path is inclined toward the grinding wheel;

[0014] The second gas path is connected to and passes through the sliding path; the blocking block has a guiding inclined surface that enables the blocking block to be pushed by gas under the action of gas pressure;

[0015] The blocking assembly has a water channel blocking state, an air channel blocking state and a semi-blocking state. When the blocking assembly is in the water channel blocking state, the blocking block cuts off the third water channel and the second air channel is opened; when the blocking assembly is in the air channel blocking state, the blocking block cuts off the second air channel and the third water channel is opened; when the blocking assembly is in the semi-blocking state, the blocking block is located in the middle position of the sliding channel, and the third water channel and the second air channel are both opened.

[0016] By adopting the above technical solution, the air supply structure can cooperate with the water supply structure and switch between them through the blocking component. When the grinding wheel is not rotating or when grinding is finished, the second air path is opened and the third water path is blocked. At this time, the spray disc can spray air to the grinding wheel, thereby cleaning the metal debris on the surface of the grinding wheel. When the grinding wheel rotates, the third water path is opened and the second air path is blocked. At this time, the spray disc can spray cutting fluid on the joint between the grinding wheel and the inner ring of the bearing, thereby performing a cooling function. During the use of the grinding wheel, the air pressure of the air supply structure is increased. At this time, the air pressure can offset part of the centrifugal force of the block, so that the abutment spring drives the block to be in a semi-blocked state. At this time, the third water path and the second air path are both opened, and the spray disc can spray air and water at the same time.

[0017] Optionally, the outlet of the second gas path is located in a channel close to the outlet of the third water channel and is inclined toward the outlet of the third water channel.

[0018] By adopting the above technical solution, when the grinding wheel is in use and the sealing assembly is in a semi-sealed state, the spray plate can supply air and water at the same time, and by setting the outlet of the second air path in the channel of the third water channel, the gas can also be sprayed out from the outlet of the third water channel. The high-pressure gas can pressurize the sprayed cutting fluid, thereby indirectly increasing the water pressure.

[0019] Optionally, the grinding device further comprises a water and gas supply mechanism for supplying cutting fluid and gas to the water supply structure and the gas supply structure, wherein the water and gas supply mechanism comprises a supply ring, which is sleeved on the rod body and located between the grinding wheel and the driving mechanism;

[0020] An air supply ring channel and water supply ring channels symmetrically located on both sides of the air supply ring channel are provided on the inner wall of the supply ring; an air inlet pipe connected to the air supply ring channel and a water inlet pipe connected to the water supply ring channel are provided on the outer wall of the supply ring; a water inlet connected to the first water channel and the water supply ring channel is provided on the circumference of the rod body; and an air inlet connected to the first air path and the air supply ring channel is provided on the circumference of the rod body;

[0021] A sealing ring is provided on the abutting surface between the supply ring and the rod body.

[0022] By adopting the above technical solution, the air supply ring is set between the two water supply rings, and the air supply ring can be sealed by the cutting fluid in the water supply ring, so that the supply ring is not easy to leak; and under the action of water pressure and air pressure, the sealing ring can be pressed between the supply ring and the rod body, and the sealing performance is better.

[0023] Optionally, the clamping device includes a mounting shell, at least two clamping blocks mounted on the mounting shell, a tension adjustment mechanism for driving the clamping blocks to open or close, a telescopic adjustment mechanism for driving the clamping blocks to telescope in the mounting shell, and a clamping mechanism for locking the inner ring of the bearing to the clamping blocks;

[0024] The tension adjustment mechanism comprises a rotating disk for slidingly mounting the clamp block and a driving assembly for driving the rotating disk to rotate; a spiral guide rail is provided on the contact surface between the rotating disk and the clamp block, and the clamp block is provided with a guide groove matching the spiral guide rail;

[0025] The installation shell is provided with a sliding groove for the clamping block to pass through and limit the position;

[0026] The driving assembly comprises a driving rod and a locking member for preventing the driving rod from self-rotating. The driving rod and the rotating disk are meshed and connected via a helical gear set. The driving rod radially penetrates the mounting housing.

[0027] By adopting the above technical solution, the driving rod can drive the rotating disk to rotate by rotating the driving rod. When the spiral guide rail of the rotating disk rotates, the clamping block is limited to the left and right, so that the clamping block can only slide radially on the rotating disk, thereby adjusting the tightness of the clamping block when it is opened or closed, which is relatively easy.

[0028] Optionally, the telescopic adjustment mechanism includes a mounting seat for rotatably mounting the rotating disk and limiting the clamping block on the surface of the rotating disk, a limiting cover fixedly mounted on the mounting seat and limiting the rotating disk on the mounting seat for mounting the driving rod, and a planetary gear train assembly for driving the mounting seat to slide horizontally;

[0029] The planetary gear train assembly includes a sun gear, a plurality of planetary gears and an inner gear ring; the sun gear has a driving shaft for threaded engagement with the mounting seat and driving the mounting seat to telescope and slide; the planetary gears are rotatably mounted on the mounting housing and circumferentially meshed with the sun gear; the inner gear ring is sleeved on the outer side of the mounting housing and meshed with the planetary gears;

[0030] The mounting housing is provided with an adjustment slot for the driving rod to slide and for limiting the rotation of the mounting seat;

[0031] The clamping block has a plurality of stepped grooves for selectively clamping the inner ring of the bearing.

[0032] By adopting the above technical solution, a plurality of step grooves are provided on the clamp block for the operator to select for installing the inner ring of the bearing. The operator can select step grooves of different widths on the clamp block according to the actual inner diameter of the inner ring of the bearing. If the step groove matches the diameter of the inner ring of the bearing, the clamp block only needs to open a small distance to clamp the inner ring of the bearing, thereby increasing the clamping speed of the inner ring of the bearing.

[0033] Furthermore, the clamp block can be driven by the planetary gear train assembly to telescope and slide on the mounting housing, so that the step grooves in the clamp block that need to be used are exposed to the mounting housing, while the step grooves that are not used are retracted in the mounting housing. When the inner ring of the bearing is mounted on the clamp block, the inner wall of the inner ring of the bearing can be pressed against the clamp block, and the end face of the inner ring of the bearing can abut against the end face of the mounting housing, so that the inner ring of the bearing can be mounted more firmly on the clamping device.

[0034] Optionally, the clamping mechanism comprises a pressure ring which is clamped on the end face of the inner ring of the bearing and has selectable sizes; the pressure ring is circumferentially provided with plug posts which correspond to the clamp block one by one and are locked to the clamp block; the clamp block has a plug hole for inserting the plug post in each of the stepped grooves;

[0035] The inner wall of the socket has a plurality of teeth grooves along the depth direction, and the pressure ring is provided with an elastic clamping assembly that can be clamped in the teeth grooves, and the elastic clamping assembly includes a clamping piece and a locking spring that drives the clamping piece to always be clamped in the teeth grooves; the clamping piece is bent to form an insertion end for inserting into the teeth groove and an unlocking end for unlocking the clamping piece.

[0036] By adopting the above technical solution, when the inner ring of the bearing is installed on the clamping block, the clamping block is further locked on the clamping block by the clamping mechanism. The clamping mechanism can press the inner ring of the bearing against the end face of the mounting shell, so that the inner ring of the bearing is not easily displaced horizontally on the clamping block.

[0037] In addition, the inner wall of the inner ring of the bearing is clamped by the clamping force of the clamping block, and the two end surfaces of the inner ring of the bearing are respectively clamped by the mounting shell and the clamping mechanism. The inner ring of the bearing is not easy to rotate under the double limit.

[0038] Optionally, it further comprises a material unloading device for unloading the inner ring of the bearing, wherein the material unloading device comprises a material receiving box and a driving member for driving the material receiving box to move;

[0039] A push piece is provided on the end surface of the mounting shell facing the clamping block, and the push piece is sleeved and slidably moved on the outer side of the clamping block; the diameter of the push piece is larger than the diameter of the mounting shell;

[0040] The push piece is provided with an unlocking piece for driving the insertion end to slide and unlock, and the clamping block is provided with an unlocking channel for the unlocking piece to slide and penetrate into the insertion hole;

[0041] The receiving box has a pushing groove for the edge of the pushing piece to be inserted into, and the symmetrical two side walls of the pushing groove can respectively abut against the two end surfaces of the pushing piece.

[0042] By adopting the above technical solution, since the diameter of the push piece is larger than the diameter of the mounting shell, a part of the push piece can be embedded in the push groove of the receiving box. When the inner ring of the bearing is processed, the driving member drives the receiving box to move, and the receiving box can drive the push piece to move on the clamping block through the limiting effect of the push groove and the push piece. The push piece can unlock the clamping mechanism and withdraw the processed inner ring of the bearing and the clamping mechanism from the clamping block and drop them into the receiving box. The above-mentioned unloading process of the inner ring of the bearing can be completed by the machine tool automation, which is more convenient and improves production efficiency.

[0043] Second aspect:

[0044] The present invention provides a control method, which adopts the following technical solution:

[0045] A control method, comprising the bearing inner ring manufacturing device, further comprising:

[0046] Obtain the real-time distance value from the grinding wheel to the central axis of the inner ring of the bearing;

[0047] When and only when the real-time distance value enters the preset reference distance range, the no-load speed value of the grinding wheel when idling is obtained;

[0048] Determine whether the no-load speed value falls within a preset reference speed range when the grinding wheel is idling;

[0049] If it does not fall in, the control drive mechanism stops working and gives an alarm;

[0050] If it falls within, the difference between the no-load speed value and the no-load reference value is calculated and defined as the no-load speed difference;

[0051] Determine a no-load adjustment value corresponding to the no-load speed difference according to the no-load speed difference;

[0052] According to the no-load adjustment value, the corresponding speed value, water pressure value and air pressure value are matched from the preset adjustment database;

[0053] The rotation speed of the driving mechanism is controlled according to the speed value, the water pressure of the water supply structure is controlled according to the water pressure value, and the air pressure of the air supply structure is controlled according to the air pressure value.

[0054] By adopting the above technical solution, when the grinding wheel is installed on the grinding device, the wear condition of the grinding wheel is not easy to measure through the change of the grinding wheel mass. The change of the grinding wheel speed caused by the change of the grinding wheel mass makes it possible to indirectly obtain the wear condition of the grinding wheel by measuring the grinding wheel speed, which is relatively simple.

[0055] Optionally, when the no-load speed value falls within a preset reference speed range, the method for controlling the grinding wheel includes:

[0056] Get the load speed value when the grinding wheel is grinding the inner ring of the bearing;

[0057] Determine whether the load speed value falls within a preset grinding speed range when the grinding wheel is grinding the inner ring of the bearing;

[0058] If it falls in, continue grinding in the current running state;

[0059] If it does not fall into the range, the difference between the load speed value and the preset grinding reference speed value is calculated and defined as the grinding speed difference;

[0060] Determine a grinding adjustment value corresponding to the grinding speed difference according to the grinding speed difference;

[0061] The distance between the grinding wheel and the inner ring of the bearing is controlled according to the grinding adjustment value.

[0062] By adopting the above technical solution, when the grinding wheel grinds the inner ring of the bearing, as the grinding wheel wears, a gap will be generated between the grinding wheel and the inner ring of the bearing. By using the linear relationship between the speed change caused by the grinding wheel wear and the gap, the gap between the grinding wheel and the inner ring of the bearing can be continuously corrected according to the speed of the grinding wheel, which is relatively simple.

[0063] In summary, the present invention includes at least one of the following beneficial technical effects:

[0064] 1. A bearing inner ring manufacturing device, which realizes the rational use of the water supply structure by arranging a water supply structure on a grinding device and arranging a plugging component driven by centrifugal force to control the opening and closing of the water supply structure, and is not likely to cause waste of cutting fluid;

[0065] 2. By setting up an air supply structure to cooperate with a water supply structure, and switching between the two through a blocking component, the grinding device can supply air to clean the surface of the grinding wheel and supply water to cool and lubricate the surface of the grinding wheel;

[0066] 3. By setting up a feeding device, the automatic feeding process of the inner ring of the bearing can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a schematic diagram of the overall structure of a bearing inner ring manufacturing device according to an embodiment of the present invention.

[0068] Figure 2 Schematic diagram of the structure of the clamping device according to the embodiment of the present invention.

[0069] Figure 3 4 is a cross-sectional view of the clamping device at AA according to an embodiment of the present invention.

[0070] Figure 4 Detailed description of the invention The figure is an exploded view of the telescopic adjustment mechanism according to the embodiment of the present invention.

[0071] Figure 5 It is a structural schematic diagram of the tension adjustment mechanism of an embodiment of the present invention.

[0072] Figure 6 yes Figure 3 A partial enlarged view of point B in the middle.

[0073] Figure 7 2 is a schematic structural diagram of a push piece according to an embodiment of the present invention.

[0074] Figure 8 It is a schematic structural diagram of a feeding device according to an embodiment of the present invention.

[0075] Fig. 9 It is a schematic structural diagram of a grinding device according to an embodiment of the present invention.

[0076] Fig.10 2 is a cross-sectional view of a grinding device according to an embodiment of the present invention.

[0077] Fig.11 yes Fig.10 A partial enlarged view of point C in the middle.

[0078] Fig.12 It is a flow chart of a control method according to an embodiment of the present invention.

[0079] Fig.13 It is a flow chart of a method for controlling a grinding wheel when the no-load speed value falls within a preset reference speed range according to an embodiment of the present invention.

[0080] Description of reference numerals: 1, frame; 2, clamping device; 21, mounting housing; 211, sliding slot; 212, adjustment slot; 22, clamping block; 221, guide slot; 222, step slot; 223, jack; 224, tooth slot; 225, unlocking slot; 23, tension adjustment mechanism; 231, rotating disk; 2311, spiral guide rail; 232, driving assembly; 2321, driving rod; 2322, locking member; 23221, fixing block; 23222, locking bolt; 24, telescopic adjustment mechanism 241, mounting seat; 2411, sleeve; 2412, limit plate; 2413, arrangement groove; 2414, penetration groove; 242, limit cover; 243, planetary gear train assembly; 2431, sun gear; 2432, planetary gear; 2433, gear ring; 2434, drive shaft; 25, clamping mechanism; 251, pressure ring; 2511, plug column; 252, elastic clamping assembly; 2521, clamping piece; 25211, insertion end; 25212, unlocking end; 2522, lock fixed spring; 2523, sliding chamber; 26, push piece; 261, give way groove; 262, unlocking piece; 3, sliding platform; 4, grinding device; 41, driving mechanism; 42, rotating shaft; 421, rod body; 4211, first shaft section; 4212, second shaft section; 422, end cover; 43, grinding wheel; 44, water supply mechanism; 441, supply ring; 4411, air supply ring; 4412, water supply ring; 4413, air inlet pipe; 4414, water inlet pipe; 442, fixing ring; 4 43. Locking ring; 45. Water supply structure; 451. First water channel; 452. Second water channel; 453. Third water channel; 46. Air supply structure; 461. First air path; 462. Second air path; 47. Blocking assembly; 471. Blocking block; 4711. Guide ramp; 472. Abutment spring; 473. Slideway; 48. Spray disc; 5. Feeding device; 51. Driving member; 52. Feeding box; 521. Receiving groove; 522. Guide ramp; 523. Rotating roller; 524. Pushing groove. DETAILED DESCRIPTION

[0081] The following is combined with Figure 1-13 The present invention is described in further detail.

[0082] The embodiment of the invention discloses a bearing inner ring manufacturing device.

[0083] Reference Figure 1 A bearing inner ring manufacturing device includes a frame 1, a clamping device 2 arranged on the frame 1, a sliding platform 3 slidably arranged on the frame 1, and a grinding device 4 and a blanking device 5 arranged on the sliding platform 3. Among them, the clamping device 2 is used for the bearing inner ring to be installed, the grinding device 4 is used for grinding the groove of the bearing inner ring, and the blanking device 5 is used for blanking the processed bearing inner ring for the next round of new grinding process.

[0084] The sliding platform 3 is driven by a linear module, so that the sliding platform 3 has a first station and a second station, and the sliding platform 3 can reciprocate between the first station and the second station. When the sliding platform 3 is in the first station, the grinding device 4 is opposite to the clamping device 2, and the grinding device 4 can grind the inner ring of the bearing. When the sliding platform 3 is in the second station, the unloading device 5 is opposite to the clamping device 2, and the unloading device 5 can unload the inner ring of the bearing on the clamping device 2.

[0085] Reference Figure 2 and Figure 3 The clamping device 2 includes a mounting housing 21, a clamping block 22, a tension adjustment mechanism 23, a telescopic adjustment mechanism 24, a clamping mechanism 25, and a push piece 26. The clamping block 22 is used to clamp the inner ring of the bearing so that the inner ring of the bearing is fixed on the clamping device 2. The tension adjustment mechanism 23 is used to adjust the distance between adjacent clamping blocks 22 to drive the clamping blocks 22 to open or close. The telescopic adjustment mechanism 24 is used to adjust the extension amount of the clamping block 22. The clamping mechanism 25 is used to further lock the inner ring of the bearing on the clamping device 2.

[0086] The mounting housing 21 is a hollow cylinder, one end of which is fixed to the output shaft of the motor and driven to rotate by the motor, and the end surface of the other end is evenly provided with a plurality of sliding grooves 211 in the circumferential direction, and the sliding grooves 211 penetrate into the mounting housing 21. In this embodiment, the number of the sliding grooves 211 is three.

[0087] Reference Figure 3 and Figure 4 The telescopic adjustment mechanism 24 includes a mounting seat 241, a limiting cover 242 and a planetary gear train assembly 243. The mounting seat 241 is slidably mounted in the inner cavity of the mounting shell 21, and the mounting seat 241 includes a sleeve portion 2411 and a limiting plate 2412. The sleeve portion 2411 and the limiting plate 2412 are coaxially arranged and integrally welded. The sleeve portion 2411 is an elongated cylinder, and the limiting plate 2412 is a flat disc-shaped, and the diameter of the limiting plate 2412 is adapted to the inner diameter of the mounting shell 21. An arrangement groove 2413 is provided on one side of the limiting plate 2412, and a through groove 2414 corresponding to the sliding through groove 211 and connected to the arrangement groove 2413 is provided on the other side.

[0088] The limiting cover 242 is a hollow cylinder with one end open, which is threadedly connected to the sleeve portion 2411 and locked by a nut, so that the limiting cover 242 and the mounting seat 241 remain fixed and are not easy to rotate relative to the mounting seat 241. The opening of the limiting cover 242 faces the arrangement groove 2413 of the mounting seat 241.

[0089] The planetary gear train assembly 243 includes a sun gear 2431, planetary gears 2432, and a ring gear 2433. The sun gear 2431 is coaxially rotatably arranged on the inner bottom surface of the mounting housing 21. The planetary gears 2432 are rotatably arranged on the inner bottom surface of the mounting housing 21, and there are three planetary gears 2432, which are uniformly arranged on the circumference of the sun gear 2431 and mesh with the sun gear 2431. A portion of the planetary gears 2432 protrudes from the housing of the mounting housing 21, and the mounting housing 21 has an extension port for the planetary gears 2432 to protrude. The ring gear 2433 is a structure in the form of internal teeth, which is sleeved on the outer side of the mounting housing 21 and meshes with the three planetary gears 2432 at the same time.

[0090] The sun gear 2431 is coaxially provided with a driving shaft 2434 . The driving shaft 2434 coaxially passes through the sleeve portion 2411 of the mounting seat 241 and is threadedly engaged with the sleeve portion 2411 .

[0091] Combination Figures 3 to 5 The tension adjustment mechanism 23 includes a rotating disk 231 and a driving assembly 232 for driving the rotating disk 231 to rotate. The rotating disk 231 is a circular thin plate, which is sleeved and rotatably arranged on the sleeve portion 2411 of the mounting seat 241, and the rotating disk 231 is located in the arrangement groove 2413 of the limiting disk 2412. One end of the rotating disk 231 is spaced from the bottom of the arrangement groove 2413 by a certain distance, and the other end abuts against the end surface of the limiting cover 242, and the limiting cover 242 can limit the rotating disk 231 in the arrangement groove 2413.

[0092] The driving assembly 232 includes a driving rod 2321 and a locking member 2322. One end of the driving rod 2321 is provided with a limit cover 242 and meshes with the rotating disk 231 through a bevel gear set. One of the bevel gear sets is fixed to the rotating disk 231, and the other is fixed to the end of the driving rod 2321. The other end of the driving rod 2321 is provided with a mounting housing 21, and the mounting housing 21 is provided with an adjustment slot 212 for the driving rod 2321 to pass through and slide horizontally.

[0093] The locking member 2322 includes a fixing block 23221 sleeved on the driving rod 2321 and sliding in the adjusting slot 212, and a locking bolt 23222 threadedly connected to the fixing block 23221 and pressed against the side wall of the driving rod 2321. The driving rod 2321 is pressed against by the locking bolt 23222, so that the driving rod 2321 is not easy to rotate.

[0094] The clamp block 22 is slidably disposed on the rotating disk 231, and the clamp block 22 is penetrated by both the penetration groove 2414 and the sliding through groove 211. The number of the clamp blocks 22 corresponds to the number of the sliding through groove 211. The clamp block 22 can slide in the radial direction of the mounting housing 21 in the sliding through groove 211 and the penetration groove 2414 and can be extended and retracted in the axial direction of the mounting housing 21.

[0095] A spiral guide rail 2311 is provided on one side of the rotating disk 231 facing the inner bottom surface of the arrangement groove 2413, and a guide groove 221 adapted to the spiral guide rail 2311 is provided on the abutting surface between the clamping block 22 and the rotating disk 231. Since the clamping block 22 is limited by the through groove 2414, when the rotating disk 231 rotates, the spiral guide rail 2311 and the guide groove 221 slide relative to each other, and the clamping block 22 can slide radially on the rotating disk 231.

[0096] Reference Figure 5 The cross section of the clamp block 22 is stepped, and has a plurality of stepped grooves 222 that can be selected to clamp the inner ring of the bearing, and the stepped grooves 222 are square grooves.

[0097] Reference Figure 2 and Figure 3 The push piece 26 is a circular thin plate, and its diameter is larger than the diameter of the mounting housing 21. The push piece 26 is sleeved on the outer side of the clamping block 22 and can slide on the clamping block 22, and the push piece 26 has a clearance groove 261 for the clamping block 22 to pass through.

[0098] Combination Figures 2 to 5 When the operator needs to install the inner ring of the bearing to be processed on the clamping device 2, first select the step groove 222 of the appropriate clamp block 22 according to the inner diameter of the inner ring of the bearing. Then adjust the planetary gear train assembly 243 to drive the drive shaft 2434 to rotate. At this time, since the adjustment groove 212 limits the drive rod 2321, when the drive shaft 2434 rotates, the mounting seat 241 can slide horizontally on the drive shaft 2434, so that the clamp block 22 and the rotating disk 231 can slide synchronously on the drive shaft 2434, and the clamp block 22 can perform telescopic movement on the mounting shell 21 until the step groove 222 for mounting the appropriate bearing inner ring is exposed from the mounting shell 21.

[0099] Then the operator rotates the driving rod 2321 to drive the rotating disk 231 to rotate, and the clamping block 22 can radially slide on the rotating disk 231 to achieve the opening and closing of adjacent clamping blocks 22, thereby clamping the inner ring of the bearing on the clamping block 22.

[0100] When the inner ring of the bearing is fixed, the inner ring of the bearing is sleeved on the outer side of the clamping block 22 , and one end surface of the inner ring of the bearing abuts against the push piece 26 .

[0101] Reference Figure 3 and Figure 6The clamping mechanism 25 includes a pressing ring 251 and an elastic clamping assembly 252. The pressing ring 251 is annular and has a variety of specifications with different diameters corresponding to the step grooves 222 of the clamping block 22 for selection by the operator. The pressing ring 251 is provided with rectangular plug posts 2511 corresponding to the clamping block 22 in a circumferential direction, and each step groove 222 of the clamping block 22 is provided with a plug hole 223 for inserting the plug post 2511 of the corresponding clamping block 22.

[0102] The elastic clamping assembly 252 includes a clamping member 2521 and a locking spring 2522. The clamping member 2521 is C-shaped, and is bent to form an insertion end 25211 and an unlocking end 25212. The pressing ring 251 has a sliding cavity 2523 for the clamping member 2521 to slide. The insertion end 25211 of the clamping member 2521 can extend from the side wall of the plug post 2511, and the unlocking end 25212 can extend from the side wall of the pressing ring 251. The locking spring 2522 is arranged in the sliding cavity 2523, which drives the insertion end 25211 of the clamping member 2521 to always extend from the plug post 2511.

[0103] The clamp block 22 has a plurality of tooth grooves 224 formed on the inner wall of the insertion hole 223 along the depth direction. When the plug post 2511 is inserted into the insertion hole 223, the insertion end 25211 of the clamping member 2521 can slide in the insertion hole 223 and cooperate with the tooth grooves 224, so that the plug post 2511 is locked in the insertion hole 223. When it is necessary to remove the pressing ring 251 from the clamp block 22, the operator can press the unlocking end 25212 located in the circumference of the pressing ring 251, and the clamping member 2521 can overcome the elastic force of the locking spring 2522 and slide in the sliding cavity 2523 toward the axial direction of the pressing ring 251, so that the insertion end 25211 withdraws from the tooth grooves 224 and retracts into the plug post 2511.

[0104] Combination Figures 5 to 7 The side wall of the clamp block 22 is also provided with an unlocking slot 225, which is in a long strip shape and penetrates into the insertion hole 223. An unlocking piece 262 is provided on the push piece 26, and the unlocking piece 262 is adapted to the unlocking slot 225 and can slide in the unlocking slot 225.

[0105] When the plug post 2511 is inserted into the insertion hole 223, the unlocking piece 262 abuts against the insertion end 25211 of the clamping member 2521. The operator can also drive the push piece 26 to slide on the pressure plate, and the push piece 26 can drive the insertion end 25211 to retract into the plug post 2511, so that the clamping mechanism 25 is unlocked and the plug post 2511 can be withdrawn from the insertion hole 223.

[0106] When the inner ring of the bearing is fixed on the clamping block 22, the operator inserts the clamping mechanism 25 into the clamping block 22, so that the inner ring of the bearing is further locked on the clamping block 22. At this time, the two ends of the inner ring of the bearing are respectively abutted against the push piece 26 and the pressure ring 251, so that the inner ring of the bearing is not easy to rotate relative to the clamping block 22 during processing.

[0107] Reference Figure 8 The material unloading device 5 includes a driving member 51 and a receiving box 52 connected to the driving member 51. In this embodiment, the driving member 51 is a cylinder structure. The receiving box 52 has a receiving groove 521 for receiving and placing the inner ring of the bearing, and the receiving box 52 has a guiding inclined surface 522 for guiding the inner ring of the bearing to roll into the receiving groove 521, and the bottom of the guiding inclined surface 522 is connected to the receiving groove 521. A plurality of rotating rollers 523 are arranged on the guiding inclined surface 522 at intervals.

[0108] The receiving box 52 is driven by the driving member 51 to move horizontally to the bottom of the inner ring of the bearing, and the inner ring of the bearing can fall onto the guiding inclined surface 522 and enter the receiving groove 521 along the guiding inclined surface 522 .

[0109] A push groove 524 is provided at the top of the receiving box 52 and at the edge of the guiding inclined surface 522. The push groove 524 is a rectangular long groove and is provided along the radial direction of the push piece 26. The width of the push groove 524 is slightly larger than the thickness of the push piece 26, and the inner walls on both sides of the push groove 524 can respectively abut against the two end surfaces of the push piece 26. The push groove 524 can allow the edge of the push piece 26 to slide and snap in.

[0110] When the inner ring of the bearing is processed, the edge of the push piece 26 slides and gets stuck in the push groove 524, and then the driving member 51 drives the receiving box 52 to slide along the axial direction of the push piece 26, so that the push piece 26 can slide on the clamping block 22, and the push piece 26 can unlock the clamping mechanism 25 and withdraw the clamping mechanism 25 and the inner ring of the bearing from the clamping block 22, and the clamping mechanism 25 and the inner ring of the bearing can both fall into the receiving box 52.

[0111] Reference Fig. 9 and Fig.10 The grinding device 4 includes a driving mechanism 41, a rotating shaft 42, a grinding wheel 43, a water and gas supply mechanism 44, a water supply structure 45, an air supply structure 46, a blocking component 47 and a spray disc 48. The driving mechanism 41 is an AC motor, which is used as a power source to provide power. The rotating shaft 42 is connected to the output shaft of the driving mechanism 41 to transmit the power of the driving mechanism 41. The grinding wheel 43 is used to grind the inner ring of the bearing to form a channel. The water and gas supply mechanism 44 is connected to an external air source and a water source to transport cutting fluid and high-pressure air. The spray disc 48 is used to spray cutting fluid and high-pressure air onto the grinding wheel 43.

[0112] The rotating shaft 42 includes a rod body 421 connected to the output shaft of the driving mechanism 41 and an end cap 422 threadedly connected to the rod body 421. The rod body 421 has a first shaft section 4211 and a second shaft section 4212 connected to the first shaft section 4211. The diameter of the first shaft section 4211 is larger than that of the second shaft section 4212, so that a step surface is formed at the connection between the first shaft section 4211 and the second shaft section 4212. The first shaft section 4211 is connected to the output shaft of the driving mechanism 41. The end cap 422 is a hollow cylinder with one end open, which is threadedly connected to the end of the second shaft section 4212.

[0113] The grinding wheel 43 and the spray disc 48 are both sleeved on the second shaft section 4212, the spray disc 48 presses the grinding wheel 43 against the stepped surface, and the end cover 422 presses the spray disc 48 against the grinding wheel 43, so that the grinding wheel 43 and the spray disc 48 are fixed to the rod body 421. When the driving mechanism 41 drives the rotating shaft 42 to rotate, the grinding wheel 43 and the spray disc 48 can rotate synchronously with the rotating shaft 42.

[0114] Reference Fig.10 and Fig.12 The water supply structure 45 includes a first water channel 451 , a second water channel 452 and a third water channel 453 .

[0115] The first water channel 451 is opened on the rod body 421 and is located at the central axis of the rod body 421. The first water channel 451 passes through the end surface of the rod body 421. The inlet of the first water channel 451 is located on the side wall of the first shaft section 4211 of the rod body 421, and the outlet is located at the end center of the second shaft section 4212 of the rod body 421.

[0116] The second water channel 452 is opened on the end cover 422, the inlet of the second water channel 452 is located on the inner bottom surface of the end cover 422, and the outlet of the second water channel 452 is located on the abutting surface between the end cover 422 and the spray plate 48. There are multiple outlets of the second water channel 452, each of which is connected to the inlet of the second water channel 452, and each outlet is connected by opening an annular groove on the abutting surface between the end cover 422 and the spray plate 48.

[0117] The third water channel 453 is opened in the spray plate 48, and the third water channel 453 corresponds to the second water channel 452. The third water channel 453 runs through both end surfaces of the spray plate 48, the inlet of the third water channel 453 is located at the end surface of the spray plate 48 facing the end cover 422, the outlet is located at the end surface of the spray plate 48 facing the grinding wheel 43, and the outlet of the third water channel 453 is inclined toward the grinding wheel 43.

[0118] When the end cover 422 is installed on the rod body 421 and the spray disc 48 is pressed, the first water channel 451 is connected to the second water channel 452, and the second water channel 452 is connected to the third water channel 453, so that the cutting fluid can enter from the inlet of the first water channel 451 and be sprayed obliquely toward the grinding wheel 43 from the outlet of the third water channel 453.

[0119] In order to prevent the water supply structure 45 from leaking, sealing gaskets are provided on the abutting surfaces between the end cover 422 and the rod body 421 and on the abutting surfaces between the end cover 422 and the spray plate 48 .

[0120] Reference Fig.10 and Fig.11 The air supply structure 46 includes a first air path 461 and a second air path 462 .

[0121] The first gas path 461 is opened in the rod body 421, the inlet of the first gas path 461 is located on the side wall of the first shaft section 4211 of the rod body 421, and the outlet is located on the side wall of the second shaft section 4212 of the rod body 421. In this embodiment, there are multiple first gas paths 461, which are circumferentially distributed in the rod body 421, the inlet of the first gas path 461 is circumferentially opened on the side wall of the first shaft section 4211, and the outlet of the first gas path 461 is circumferentially opened on the side wall of the second shaft section 4212 and is connected through an annular groove opened on the side wall of the second shaft section 4212.

[0122] The second air paths 462 are opened in the spray plate 48, and the number of the second air paths 462 corresponds to the number of the third water channels 453. The second air paths 462 penetrate the spray plate 48, and the inlet thereof is located on the inner wall of the spray plate 48, and the outlet thereof is located on the inner wall of the third water channel 453 near the outlet, and the outlet of the second air paths 462 is inclined toward the grinding wheel 43.

[0123] When the spray plate 48 is fixed on the rod body 421 , the first air path 461 is connected to the second air path 462 , so that high-pressure air can enter from the inlet of the first air path 461 and be sprayed out from the outlet of the second air path 462 .

[0124] In order to prevent the air supply structure 46 from leaking, a sealing ring is provided on the contact surface between the spray disc 48 and the second shaft segment 4212 .

[0125] Reference Fig.10 and Fig.11 A sliding path 473 is provided in the spray plate 48, and the sliding path 473 is arranged along the radial direction of the spray plate 48, and the sliding path 473 connects the third water channel 453 and the second gas path 462. The number of the sliding paths 473 corresponds to the number of the third water channels 453.

[0126] The blocking assembly 47 is arranged in the sliding path 473. The blocking assembly 47 includes a blocking block 471 and an abutting spring 472. The blocking block 471 slides in the sliding path 473 along the radial direction of the spray disc 48. The length and width of the blocking block 471 are both larger than the inner diameters of the third water channel 453 and the second air path 462. When the blocking block 471 slides, the blocking block 471 can block the third water channel 453 or the second air path 462, or both the third water channel 453 and the second air path 462 can be opened. The end of the blocking block 471 facing the second air path 462 has a guiding slope 4711 that enables the blocking block 471 to be pushed by high-pressure air under the action of air pressure.

[0127] The abutment spring 472 is disposed in the sliding channel 473 , one end of the abutment spring 472 is connected to the blocking block 471 , and the other end is connected to the inner wall of the sliding channel 473 . The abutment spring 472 can drive the blocking block 471 to always block the third water channel 453 .

[0128] Reference Fig.10 and Fig.11 When the driving mechanism 41 drives the spray disc 48 to rotate, the blocking block 471 can overcome the elastic force of the abutting spring 472 under the action of centrifugal force and slide in the sliding path 473, so that the blocking component 47 has a water channel blocking state, an air channel blocking state and a semi-blocking state.

[0129] When the spray disc 48 and the grinding wheel 43 rotate at high speed, the sealing block 471 moves radially away from the central axis of the spray disc 48 under the action of centrifugal force, so that the third water channel 453 is opened and the second air path 462 is blocked. At this time, the water supply structure 45 can supply cutting fluid and spray the cutting fluid to the abutment between the grinding wheel 43 and the inner ring of the bearing. At this time, the sealing assembly 47 is in an air path blocking state.

[0130] When the spray disc 48 stops rotating, the blocking block 471 is reset to its original state under the action of the abutting spring 472, the third water channel 453 is blocked, the second air path 462 is opened, and the outlet of the second air path 462 of high-pressure air is ejected. At this time, the blocking assembly 47 is in a water path blocking state.

[0131] When the spray disc 48 is pressurized with air during rotation and the air in the second air path 462 reaches a certain pressure, the air applies pressure to the guide slope 4711, and the air can drive the sealing member to overcome the elastic force of the abutment spring 472, thereby sliding a certain distance in the direction of the third water channel 453. At this time, the second air path 462 and the third water channel 453 are both opened, and the cutting fluid and high-pressure air can both come out from the outlet of the third water channel 453, and the high-pressure air can pressurize the cutting fluid to a certain extent, so that the outflow rate of the cutting fluid increases.

[0132] Reference Fig.10 and Fig.11The water vapor supply mechanism 44 includes a supply ring 441. The supply ring 441 has a circular cross section and is sleeved on the first shaft section 4211 and does not rotate synchronously with the first shaft section 4211. A fixing ring 442 is welded on the first shaft section 4211, and a locking ring 443 is sleeved and fixed. The fixing ring 442 and the locking ring 443 are respectively located on both sides of the supply ring 441, and the locking ring 443 presses the supply ring 441 against the fixing ring 442.

[0133] An air supply ring channel 4411 and two water supply ring channels 4412 are provided on the inner wall of the supply ring 441. Both the air supply ring channel 4411 and the water supply ring channel 4412 are annular. The water supply ring channels 4412 are located on both sides of the air supply ring channel 4411, and the two water supply ring channels 4412 are connected to each other. The air supply ring channel 4411 corresponds to and is connected to the inlet of the first air path 461, and the water supply ring channel 4412 corresponds to and is connected to the inlet of the first water channel 451. An air inlet pipe 4413 connected to the air supply ring channel 4411 and a water inlet pipe 4414 connected to the water supply ring channel 4412 are provided on the outer wall of the supply ring 441. The air inlet pipe 4413 is connected to an external air source for supplying air to the air supply structure 46, and the water inlet pipe 4414 is connected to an external water source for supplying water to the water supply structure 45.

[0134] In order to prevent water or air leakage between the supply ring 441 and the rod body 421 , sealing rings are provided on the abutting surfaces between the supply ring 441 and the rod body 421 and on the abutting surfaces between the supply ring 441 and the locking ring 443 and the fixing ring 442 .

[0135] Reference Fig.12 The control method of the grinding device in the embodiment of the present invention comprises the following steps:

[0136] There is a correlation between the rotation speed of the grinding wheel and the degree of wear of the grinding wheel. When the degree of wear of the grinding wheel increases, the radius of the grinding wheel decreases and the mass also decreases. At this time, when the driving mechanism outputs the same power, the rotation speed of the grinding wheel will increase.

[0137] S100: Obtain the real-time distance value from the grinding wheel to the central axis of the inner ring of the bearing.

[0138] When the inner ring of the bearing is installed on the clamping device, the sliding platform moves horizontally so that the grinding wheel of the grinding device approaches the inner ring of the bearing. When the grinding device approaches the inner ring of the bearing, the driving mechanism is initialized and its rotation speed begins to increase, so that the speed of the grinding wheel gradually increases from 0r / min, and the air pressure of the air supply structure and the water pressure of the water supply structure also begin to increase. When the distance between the grinding wheel and the inner ring of the bearing reaches a certain distance, the speed of the grinding wheel tends to be stable, and the state of the grinding wheel can be obtained at this time.

[0139] The real-time distance value is the distance between the center axis of the grinding wheel and the center axis of the inner ring of the bearing at any time during the process of the grinding device moving toward the inner ring of the bearing. When the grinding wheel approaches the inner ring of the bearing, the real-time distance value from the grinding wheel to the center axis of the inner ring of the bearing needs to be obtained in real time through the distance meter installed on the grinding device.

[0140] S200: When and only when the real-time distance value enters a preset reference distance range, obtain the no-load speed value of the grinding wheel when it is idling.

[0141] The reference distance range is a value set manually by the operator, which is the distance range between the grinding wheel and the inner ring of the bearing when the speed of the grinding wheel is stable during the movement of the grinding device to the clamping device. When the grinding wheel moves within this range, the speed of the grinding wheel has stabilized, and no further explanation is given here.

[0142] The no-load speed value is the no-load rotation speed when the grinding wheel is not in contact with the inner ring of the bearing.

[0143] When the real-time distance value from the grinding wheel to the center axis of the inner ring of the bearing does not enter the reference distance range, the grinding device may still be in the initialization process, and the rotation speed of the grinding wheel at this time has no reference significance, so continue to obtain the real-time distance value from the grinding wheel to the center axis of the inner ring of the bearing.

[0144] When the real-time distance value from the grinding wheel to the central axis of the inner ring of the bearing falls within the reference distance range, the rotation speed of the grinding wheel tends to be stable. At this time, the no-load speed value of the grinding wheel when idling is obtained by the speed encoder arranged on the output shaft of the driving mechanism.

[0145] S300: Determine whether the no-load speed value falls within a preset reference speed range when the grinding wheel is idling.

[0146] The reference speed range is a value set manually by the operator, which is the fluctuating speed range that can be achieved when the grinding wheel is driven by the drive mechanism to idle in a state where the grinding wheel can continue to be used and is not likely to cause danger or damage to the equipment during the grinding process. It will not be elaborated here.

[0147] By comparing the no-load speed value with the reference speed range, the wear of the grinding wheel and whether it can continue to be used can be determined.

[0148] S301: If it does not fall in, the driving mechanism is controlled to stop working and an alarm is sounded.

[0149] When the no-load speed value is not within the reference speed range, that is, it is higher or lower than the reference speed range, it means that the grinding wheel is severely worn or stuck, and the grinding wheel cannot be used anymore. The grinding process cannot continue. At this time, the control drive mechanism is powered off and stops working, and an alarm is issued to notify the operator to replace or repair the grinding wheel to avoid dangerous events.

[0150] S302: If it falls within, the difference between the no-load speed value and the no-load reference value is calculated and defined as the no-load speed difference.

[0151] When the no-load speed value is within the reference speed range, the grinding wheel may be worn, but it does not affect the use, so the grinding wheel continues to be used in the grinding process of the inner ring of the bearing. Then, before the next round of grinding process, it automatically switches to another grinding wheel in the grinding device, and the grinding wheel is manually replaced by the operator without stopping the machine.

[0152] During the grinding process of the inner ring of the bearing, the grinding wheel needs to be ground at a determined rotation speed. During this grinding process, since the grinding wheel may be worn, it is necessary to identify the wear condition of the grinding wheel and adjust the rotation speed of the driving mechanism, the air pressure of the air supply structure, and the water pressure of the water supply structure to adapt to the normal grinding process of the inner ring of the bearing.

[0153] The no-load speed difference is obtained by calculating the difference between the no-load speed value and the no-load reference value.

[0154] V 空差 =V 空 -V 空基 ,

[0155] Among them, V 空差 is the no-load speed difference, V 空 is the no-load speed value, V 空基 It is the no-load reference value.

[0156] S400: Determine a no-load adjustment value corresponding to the no-load speed difference according to the no-load speed difference.

[0157] The no-load adjustment value is an intermediate quantity corresponding to the no-load speed difference, and is used to associate the no-load speed difference with the rotation speed of the drive mechanism, the air pressure of the air supply structure, and the water pressure of the water supply structure. By setting up an adjustment database, the adjustment database is a database added by artificial settings, and the adjustment database includes parameters such as the no-load adjustment value, the speed value of the drive mechanism, the water pressure value of the water supply structure, and the air pressure value of the air supply structure. Through the no-load adjustment value, the no-load speed difference can be associated with each data in the adjustment database in a one-to-one correspondence.

[0158] S500: Matching the corresponding speed value, water pressure value and air pressure value from a preset adjustment database according to the no-load adjustment value.

[0159] The no-load adjustment value can be used to match the corresponding speed value of the driving mechanism, the water pressure value of the water supply structure, and the air pressure value of the air supply structure from the adjustment database, thereby determining the speed value of the driving mechanism, the water pressure value of the water supply structure, and the air pressure value of the air supply structure corresponding to each no-load speed difference.

[0160] L 库 ={(C T , V 机 , P 水 , P 气 )}, where L 库 To adjust the database set, which contains C T No-load adjustment value, V 机 Driving mechanism speed value, P 水 Water supply structure water pressure value and P 气 Elements such as air supply structure air pressure value.

[0161] S600: controlling the rotation speed of the driving mechanism according to the speed value, controlling the water pressure of the water supply structure according to the water pressure value, and controlling the air pressure of the air supply structure according to the air pressure value.

[0162] After obtaining the no-load adjustment value of the grinding wheel and matching the corresponding speed value of the driving mechanism, the water pressure value of the water supply structure, and the air pressure value of the air supply structure, the output change of the corresponding mechanism of the grinding device can be controlled.

[0163] When the grinding wheel is worn, according to the wear condition of the grinding wheel and the no-load speed difference, the corresponding rotation speed of the driving mechanism is reduced according to the speed value of the driving mechanism, the corresponding water pressure of the water supply structure is reduced according to the water pressure value, and the corresponding air pressure of the air supply structure is reduced according to the air pressure value, so that the grinding wheel can continue to grind the inner ring of the bearing in a better operating state.

[0164] Reference Fig.13 In the implementation of the present invention, when the no-load speed value of the grinding wheel falls into the preset reference speed range, the control method of the grinding wheel in the grinding process of the inner ring of the secondary bearing is:

[0165] S700: Get the load speed value when the grinding wheel grinds the inner ring of the bearing.

[0166] The load speed value is the real-time speed when the grinding wheel abuts against the inner ring of the bearing to grind the inner ring of the bearing. The grinding condition of the grinding wheel on the inner ring of the bearing can be understood through the load speed value, so the load speed value of the grinding wheel is first obtained.

[0167] S800: Determine whether the load speed value falls within a preset grinding speed range when the grinding wheel grinds the inner ring of the bearing.

[0168] The grinding speed range is the value set manually by the operator, which is the fluctuating speed range when the grinding wheel abuts against the inner ring of the bearing for normal grinding. Within this range, the grinding wheel grinds the inner ring of the bearing normally, the grinding wheel abuts against the inner ring of the bearing normally, there is no gap between the two and they fit tightly.

[0169] S801: If it falls in, continue grinding in the current running state.

[0170] The load speed value of the grinding wheel is within the grinding speed range, indicating that the grinding condition between the grinding wheel and the inner ring of the bearing is good and normal grinding can continue.

[0171] S802: If it does not fall into the range, the difference between the load speed value and the preset grinding reference speed value is calculated and defined as the grinding speed difference.

[0172] The load speed value of the grinding wheel is not within the grinding speed range, indicating that the grinding wheel has been worn during the grinding process and the radius of the grinding wheel has been reduced. At this time, there is a gap between the grinding wheel and the inner ring of the bearing, and the inner ring of the bearing cannot be further polished.

[0173] The grinding reference speed value is the value manually set by the operator. It is the speed value when the grinding wheel is normally grinding the inner ring of the bearing. It will not be elaborated here.

[0174] The grinding speed difference is linearly related to the gap distance between the grinding wheel and the inner ring of the bearing, so the grinding speed difference of the grinding wheel is calculated first.

[0175] V 负差 =V 负 -V 负基 , where V 负差 V is the grinding speed difference, 负 is the load speed value of the grinding wheel, S 负基 It is the reference speed value of the grinding wheel.

[0176] S900: Determine a grinding adjustment value corresponding to the grinding speed difference according to the grinding speed difference.

[0177] The grinding adjustment value is the distance adjustment value that the equipment system needs to correct after a gap is generated between the grinding wheel and the inner ring of the bearing during grinding. The grinding adjustment value can be calculated by the grinding speed difference. The grinding adjustment value is linearly related to the grinding speed difference. D =aV 负差 +b, where S D is the grinding adjustment value, a and b are both quantitative. Therefore, the grinding adjustment value can be calculated by the load speed value of the grinding wheel, S D =a(V 负 -V 负基 )+b.

[0178] The method for obtaining a and b is: by testing the equipment, obtaining multiple sets of grinding wheel load speed values ​​and the corresponding gap distances between the grinding wheel and the inner ring of the bearing, and calculating a and b by linear fitting.

[0179] S1000: Control the distance between the grinding wheel and the inner ring of the bearing according to the grinding adjustment value.

[0180] After the grinding adjustment value is calculated, the sliding platform is controlled to adjust horizontally, and the sliding platform moves S D The grinding adjustment value is adjusted to a certain distance so that the grinding wheel can fit the inner ring of the bearing again for grinding.

[0181] Finally, the above-mentioned grinding wheel control process is circulated, the load speed value of the grinding wheel is continuously scanned and the distance between the grinding wheel and the inner ring of the bearing is corrected until the grinding wheel completes the grinding of the inner ring of the bearing.

[0182] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bearing inner ring manufacturing device, comprising a frame (1), characterized in that: It also includes a clamping device (2) arranged on the frame (1) for mounting the inner ring of the bearing, and a grinding device (4) arranged on the frame (1) for grinding the inner ring of the bearing; The grinding device (4) comprises a driving mechanism (41), a rotating shaft (42) arranged on the driving mechanism (41) and driven to rotate by the driving mechanism (41), a grinding wheel (43) sleeved on the rotating shaft (42), a spray disc (48) sleeved on the rotating shaft (42) for spraying cutting fluid, and a water supply structure (45); the rotating shaft (42) comprises a rod body (421) and an end cover (422) threadedly connected to an end of the rod body (421) and pressing the spray disc (48) against the grinding wheel (43); The water supply structure (45) comprises a first water channel (451) opened on the rod body (421), a second water channel (452) opened on the end cover (422) and connected to the first water channel (451), and a third water channel (453) opened on the spray plate (48) and connected to the second water channel (452), wherein the third water channel (453) passes through the spray plate (48) and an outlet of the third water channel (453) is inclined toward the grinding wheel (43); A sliding path (473) is radially provided in the spray disc (48) and the sliding path (473) is connected to the third water channel (453). A blocking component (47) is provided in the sliding path (473) for cutting off and blocking the third water channel (453). The blocking component (47) comprises a blocking block (471) that slides on the sliding path (473) and an abutting spring (472) that drives the blocking block (471) to slide radially and always blocks the third water channel (453). The grinding device (4) further comprises an air supply structure (46), the air supply structure (46) comprising a first air path (461) opened on the rod body (421) and a second air path (462) opened on the spray disc (48), the second air path (462) being connected to the first air path (461), the second air path (462) penetrating the spray disc (48), and an outlet of the second air path (462) being inclined toward the grinding wheel (43); The second air path (462) is connected to and passes through the sliding path (473); the blocking block (471) has a guiding inclined surface (4711) that enables the blocking block (471) to be pushed by high-pressure air under the action of air pressure; The blocking component (47) has a water channel blocking state, an air channel blocking state and a semi-blocking state. When the blocking component (47) is in the water channel blocking state, the blocking block (471) cuts off the third water channel (453) and the second air channel (462) is opened; when the blocking component (47) is in the air channel blocking state, the blocking block (471) cuts off the second air channel (462) and the third water channel (453) is opened; when the blocking component (47) is in the semi-blocking state, the blocking block (471) is located in the middle of the sliding channel (473) and the third water channel (453) and the second air channel (462) are both opened.

2. The bearing inner ring manufacturing equipment according to claim 1, characterized in that: The outlet of the second gas path (462) is located in a channel close to the outlet of the third water channel (453) and is inclined toward the outlet of the third water channel (453).

3. The bearing inner ring manufacturing equipment according to claim 2, characterized in that: The grinding device (4) further comprises a water-gas supply mechanism (44) for supplying cutting fluid to the water supply structure (45) and supplying high-pressure air to the air supply structure (46); the water-gas supply mechanism (44) comprises a supply ring (441); the supply ring (441) is sleeved on the rod body (421) and is located between the grinding wheel (43) and the driving mechanism (41); the supply ring (441) does not rotate synchronously with the rod body (421); An air supply channel (4411) and water supply channels (4412) symmetrically located on both sides of the air supply channel (4411) are provided on the inner wall of the supply ring (441), an air inlet pipe (4413) connected to the air supply channel (4411) and a water inlet pipe (4414) connected to the water supply channel (4412) are provided on the outer wall of the supply ring (441), a water inlet connected to the first water channel (451) and the water supply channel (4412) are provided on the rod body (421), and an air inlet connected to the first air path (461) and the air supply channel (4411) are provided on the rod body (421); A sealing ring is provided on the contact surface between the supply ring (441) and the rod body (421).

4. The bearing inner ring manufacturing equipment according to claim 1, characterized in that: The clamping device (2) comprises a mounting shell (21), at least two clamping blocks (22) mounted on the mounting shell (21), a tension adjustment mechanism (23) for driving the clamping blocks (22) to open or close, a telescopic adjustment mechanism (24) for driving the clamping blocks (22) to telescope in the mounting shell (21), and a clamping mechanism (25) for locking the inner ring of the bearing to the clamping blocks (22); The tension adjustment mechanism (23) comprises a rotating disk (231) for slidingly mounting the clamping block (22) and a driving assembly (232) for driving the rotating disk (231) to rotate; a spiral guide rail (2311) is provided on the contact surface between the rotating disk (231) and the clamping block (22); and the clamping block (22) is provided with a guide groove (221) that cooperates with the spiral guide rail (2311); The installation housing (21) is provided with a sliding groove (211) for the clamping block (22) to pass through and limit the position; The driving assembly (232) comprises a driving rod (2321) and a locking member (2322) for preventing the driving rod (2321) from rotating. The driving rod (2321) and the rotating disk (231) are meshingly connected via a helical gear set. The driving rod (2321) radially penetrates the mounting housing (21).

5. The bearing inner ring manufacturing equipment according to claim 4, characterized in that: The telescopic adjustment mechanism (24) comprises a mounting seat (241) for rotatably mounting the rotating disk (231) and limiting the clamping block (22) on the surface of the rotating disk (231), a limiting cover (242) fixedly mounted on the mounting seat (241) and limiting the rotating disk (231) on the mounting seat (241) for mounting the driving rod (2321), and a planetary gear train assembly (243) for driving the mounting seat (241) to slide horizontally; The planetary gear train assembly (243) comprises a sun gear (2431), a plurality of planetary gears (2432) and a ring gear (2433); the sun gear (2431) has a drive shaft (2434) for threaded engagement with the mounting seat (241) and for driving the mounting seat (241) to telescope and slide; the planetary gears (2432) are rotatably mounted on the mounting housing (21) and circumferentially meshed with the sun gear (2431); the ring gear (2433) is sleeved on the outer side of the mounting housing (21) and meshed with the planetary gears (2432); The mounting housing (21) is provided with an adjustment slot (212) for the driving rod (2321) to slide and for limiting the rotation of the mounting seat (241); The clamping block (22) has a plurality of stepped grooves (222) that can be selected to clamp the inner ring of the bearing.

6. The bearing inner ring manufacturing equipment according to claim 5, characterized in that: The clamping mechanism (25) comprises a pressure ring (251) which is pressed against the end surface of the inner ring of the bearing and has selectable sizes. The pressure ring (251) is circumferentially provided with plug posts (2511) which correspond to the clamp block (22) one by one and are locked to the clamp block (22). The clamp block (22) has a plug hole (223) in each of the stepped grooves (222) for the plug posts (2511) to be inserted. The inner side wall of the insertion hole (223) has a plurality of tooth grooves (224) along the depth direction; the pressure ring (251) is provided with an elastic clamping assembly (252) capable of being clamped in the tooth grooves (224); the elastic clamping assembly (252) comprises a clamping piece (2521) and a locking spring (2522) for driving the clamping piece (2521) to always be clamped in the tooth grooves (224); the clamping piece (2521) is bent to form an insertion end (25211) for inserting into the tooth groove (224) and an unlocking end (25212) for unlocking the clamping piece (2521).

7. The bearing inner ring manufacturing equipment according to claim 6, characterized in that: It also includes a material unloading device (5) for unloading the inner ring of the bearing, the material unloading device (5) comprising a material receiving box (52) and a driving member (51) for driving the material receiving box (52) to move; A push piece (26) is provided on the end surface of the mounting shell (21) facing the clamping block (22), and the push piece (26) is sleeved and slidably disposed on the outer side of the clamping block (22); the diameter of the push piece (26) is greater than the diameter of the mounting shell (21); The push piece (26) is provided with an unlocking piece (262) for driving the insertion end (25211) to slide and unlock, and the clamping block (22) is provided with an unlocking channel for the unlocking piece (262) to slide and penetrate into the insertion hole (223); The material receiving box (52) has a pushing groove (524) for the edge of the pushing piece (26) to be inserted into, and the symmetrical two side walls of the pushing groove (524) can respectively abut against the two end surfaces of the pushing piece (26).

8. A control method, comprising the bearing inner ring manufacturing equipment according to claim 2, characterized in that: Also includes: Obtaining a real-time distance value from the grinding wheel (43) to the central axis of the inner ring of the bearing; When and only when the real-time distance value enters the preset reference distance range, the no-load speed value is obtained; Determining whether the no-load speed value falls within a preset reference speed range when the grinding wheel (43) is idling; If it does not fall in, the driving mechanism (41) is controlled to stop working and an alarm is sounded; If it falls within, the difference between the no-load speed value and the no-load reference value is calculated and defined as the no-load speed difference; Determine a no-load adjustment value corresponding to the no-load speed difference according to the no-load speed difference; According to the no-load adjustment value, the corresponding speed value, water pressure value and air pressure value are matched from the preset adjustment database; The rotation speed of the driving mechanism (41) is controlled according to the speed value, the water pressure of the water supply structure (45) is controlled according to the water pressure value, and the air pressure of the air supply structure (46) is controlled according to the air pressure value.

9. A control method according to claim 8, characterized in that: When the no-load speed value falls within a preset reference speed range, the control method for the grinding wheel (43) includes: Obtain the load speed value when the grinding wheel (43) grinds the inner ring of the bearing; Determining whether the load speed value falls within a preset grinding speed range when the grinding wheel (43) is grinding the inner ring of the bearing; If it falls in, continue grinding in the current running state; If it does not fall into the range, the difference between the load speed value and the preset grinding reference speed value is calculated and defined as the grinding speed difference; Determine a grinding adjustment value corresponding to the grinding speed difference according to the grinding speed difference; The distance between the grinding wheel (43) and the inner ring of the bearing is controlled according to the grinding adjustment value.

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