Inner star wheel fairway polishing device

Abstract

The invention relates to the technical field of grinding devices, and discloses an inner star wheel ball groove grinding device which comprises an assembly table, a rotary supporting table and a lifting clamping arm are installed on the inner wall of the assembly table, a transverse movement control arm is installed at the top of the assembly table, and a grinding mechanism is installed at the output end of the transverse movement control arm. The grinding mechanism comprises a U-shaped fixing frame, the inner wall of the U-shaped fixing frame is rotationally sleeved with a first motor, the back of the U-shaped fixing frame is provided with the first motor, the output end of the first motor penetrates through the first motor to be connected with a rotating disc, a plurality of contact grooves are formed in the side wall of the rotating disc, and grinding contacts are slidably sleeved with the multiple contact grooves; the grinding mechanism is improved, the rotating disc and the multiple grinding contacts are arranged, the multiple grinding contacts slide and expand outwards under the rotating centrifugal force of the rotating disc, when the contact pressure between the grinding contacts and a grinding piece is too large, the grinding contacts are stressed to slide and contract, and therefore the grinding mechanism has the grinding pressure self-adaption characteristic; the polishing piece and the polishing mechanism are prevented from being damaged, and the yield is increased.

Description

Technical Field

[0001] The invention relates to the technical field of grinding devices, and more specifically to an inner star wheel ballway grinding device. Background Art

[0002] The inner star wheel is one of the key components of the constant velocity universal joint and plays a vital role in the car transmission system. The main function of the constant velocity universal joint is to achieve power transmission between two axes with an angle or a change in relative position between the two axes, and to ensure that they rotate at the same angular velocity. In this process, the inner star wheel and the outer star wheel are connected to the two shafts through splines, and the side walls of the inner star wheel and the inner wall of the outer star wheel are provided with ballways, which are connected to each other through steel balls. In the production and processing of the inner star wheel, the grinding of the ballways is an indispensable process.

[0003] However, the existing grinding device has some defects when in use. Since the inner star wheel ball track has an arc-shaped characteristic, the grinding mechanism needs to be precisely adjusted in stroke. Once there is an error in the grinding device, the grinding mechanism may exert excessive pressure on the ball track, which will not only damage the ball track itself, but may also cause damage to the grinding mechanism, thereby seriously affecting the qualified rate of the finished products. This error may also bring safety hazards and pose a threat to the safety of production operators. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides an inner star wheel ballway grinding device to solve the problem that the ballway or grinding mechanism is damaged due to stroke error during operation of the grinding device in the above background technology.

[0005] The present invention provides the following technical solution: an inner star wheel ballway grinding device, comprising an assembly table, a rotating support table and a lifting clamping arm are installed on the inner wall of the assembly table, a lateral control arm is installed on the top of the assembly table, and a grinding mechanism is installed on the output end of the lateral control arm; The grinding mechanism comprises a U-shaped fixing frame, the inner wall of the U-shaped fixing frame is rotatably sleeved with a motor 1, the back of the U-shaped fixing frame is installed with a motor 1, the output end of the motor 1 passes through the motor 1 and is connected to the turntable, the side wall of the turntable is provided with a plurality of contact slots, and a plurality of the contact slots are slidably sleeved with grinding contacts; Some of the grinding contacts slide and expand outwards due to the centrifugal force of the rotating disk, and some of the grinding contacts shrink due to the grinding pressure overload, so as to achieve grinding pressure self-adaptation; The inner cavity of the rotating disk is provided with a plurality of liquid channels, and the polishing ends of the plurality of polishing contacts are provided with liquid outlets connected with the liquid channels; The plurality of grinding contacts automatically retract when not subjected to centrifugal force, and are used to close the water discharge effect of the liquid outlet.

[0006] Furthermore, a plurality of the grinding contacts are provided with a slide groove at the bottom, and a plurality of the contact groove inner walls are provided with a protrusion, the protrusion is slidably sleeved in the grinding contact slide groove, and the protrusion is transmission-connected to the inner wall of the slide groove via a tension spring.

[0007] Furthermore, the grinding contact is composed of a main body contact and a tail block, the tail block is fixedly connected on one side of the main body contact, the thickness of the tail block is smaller than the thickness of the main body contact, the liquid outlet passes through from one side of the main body contact to the other side, the contact groove is composed of a head groove and a tail groove, the main body contact fits inside the tail groove, and the tail block fits on the inner wall of the tail groove; several of the liquid channels are connected to the inside of the head groove of several contact grooves through the liquid passage, and the main body contact blocks the liquid passage when the grinding contact is retracted in the contact groove; the front side of the U-shaped fixing frame is provided with a water injection terminal connected to the inner cavity of the turntable.

[0008] Furthermore, an arc-shaped slot is provided on the back of the tail block, one side of the arc-shaped slot is set as a sloped surface, a ring groove connected to the inside of the tail groove is provided on the back of the turntable, a notch ring plate is fixedly connected to the inner wall of the U-shaped fixing frame, the notch ring plate is embedded in the ring groove, and the notch ring plate is embedded in the arc-shaped slot.

[0009] Furthermore, a plurality of rollers are arranged on a side of the plurality of grinding contacts away from the liquid passage opening.

[0010] Furthermore, the water injection end includes a pipe mouth and an embedded cylinder. The embedded cylinder is fixedly connected to the inner wall of the U-shaped fixing frame and extends into the inner cavity of the turntable. The pipe mouth is fixedly installed on the front side of the U-shaped fixing frame and penetrates into the inner cavity of the embedded cylinder. The inner cavity of the embedded cylinder is provided with a plurality of liquid holes that penetrate to the side wall. A sealing plate is provided at the back end of the inner cavity of the embedded cylinder. Two rubber sealing rings are provided on the side wall of the embedded cylinder to contact the inner wall of the turntable. Several of the liquid holes are located in the gap between the two rubber sealing rings.

[0011] Furthermore, a cover shell is installed on the side wall of the U-shaped fixing frame, the turntable is located inside the cover shell, and a notch is provided on one side of the cover shell.

[0012] Furthermore, the transverse control arm includes a main body cross arm, the side wall of the main body cross arm is slidably sleeved with an arm sleeve, the bottom of the arm sleeve is fixedly installed on the top of the assembly table through a column, the side wall of the main body cross arm is provided with a concave transverse groove, and a rack is fixedly connected in the concave transverse groove, and a motor 2 is fixedly installed on the outer wall of the arm sleeve, the output end of the motor 2 passes through the arm sleeve and extends into the concave transverse groove, and the output end of the motor 2 is fixedly connected with a gear, and the gear is meshed with the rack, and the U-shaped fixing frame is fixedly installed at one end of the main body cross arm.

[0013] Furthermore, the rotating support platform includes a cross beam plate, a motor three is fixedly installed at the bottom of the cross beam plate, an output end of the motor three passes through the cross beam plate and is connected to a flat key shaft, a swivel column is slidably sleeved on the side wall of the flat key shaft, a spline end shaft is fixedly connected to the top of the swivel column, and an annular groove is opened on the side wall of the swivel column, and the annular groove is connected to the lifting clamping arm.

[0014] Furthermore, the lifting and clamping arm includes a support arm and two electric cylinders. Two rail grooves are arranged on the top of the support arm, and clamps are slidably sleeved in the two rail grooves. Threaded shafts are rotatably sleeved in the two rail grooves of the support arm. The threads of the two threaded shafts have opposite rotation directions. The two clamps are respectively threadedly sleeved on the side walls of the two threaded shafts. Motors four are installed at both ends of the support arm. The two motors four are respectively used to drive the two threaded shafts to rotate. The output ends of the two electric cylinders are connected to the two ends of the support arm. A circular through hole is opened on the top of the support arm, and the inner wall of the circular through hole is embedded in the annular groove of the rotary column.

[0015] Technical effects and advantages of the present invention: The present invention improves the grinding mechanism by setting a rotating disk and a plurality of grinding contacts. The plurality of grinding contacts are subjected to the centrifugal force of the rotating disk to slide and expand outward. Of course, when the contact pressure between the grinding contacts and the grinding piece is too large, the grinding contacts are subjected to the force to slide and shrink, thereby making the grinding mechanism have a grinding pressure adaptive characteristic, preventing the grinding piece and the grinding mechanism from being damaged, and improving the yield rate. In addition, through the structural setting of the rotating disk and the grinding contacts, a coolant can be connected, and the coolant can be sprayed from between the grinding ends of the grinding contacts, so as to achieve precise cooling of the grinding part, prevent the grinding piece and the equipment from being damaged due to thermal deformation, and further improve the yield rate. The grinding contact structure is also improved. By setting the main body contact and tail block, a number of grinding contacts have an opening and closing effect on the coolant output when expanding and contracting. When the turntable rotates to expand the grinding contacts for grinding, the coolant flows normally. When the turntable stops rotating, a number of grinding contacts automatically contract, and the main body contact and tail block cooperate to cut off the coolant circulation effect, thereby reducing the consumption of coolant. The tail block is further improved and a notched ring plate is provided. When the turntable rotates, the notched ring plate cooperates with the arc-shaped groove and the slope surface on the tail block, so that the notched ring plate limits the grinding contact to slide only in the direction toward the grinding workpiece. The sliding of the grinding contact controls the circulation of the coolant, which can avoid several grinding contacts from spraying coolant in multiple directions, causing consumption of coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the grinding mechanism structure; Figure 3 For the present invention Figure 2 Schematic diagram of the grinding contact structure; Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure of the turntable; Figure 5 For the present invention Figure 2 Schematic diagram of the U-shaped fixing frame structure; Figure 6 For the present invention Figure 2 Top view of the polished contact structure in FIG. Figure 7 For the present invention Figure 6 The arc slot, slope surface and Figure 5 Schematic diagram of the matching of the middle notch ring plate; Figure 8 This is a schematic diagram of the water injection end structure of the present invention; Fig. 9 For the present invention Figure 1 Schematic diagram of the lateral control arm structure; Fig.10 For the present invention Figure 1 Schematic diagram of the rotating support table and lifting clamping arm structure.

[0017] The accompanying drawings are marked as follows: 1, assembly table; 2, rotating support table; 3, lifting clamping arm; 4, lateral control arm; 5, grinding mechanism; 51, U-shaped fixing frame; 52, motor 1; 53, turntable; 54, grinding contact; 55, contact slot; 541, main body contact; 542, tail block; 543, tension spring; 544, liquid outlet; 545, arc-shaped slot; 546, slope surface; 547, roller; 511, notched ring plate; 531, liquid channel; 532, liquid through port; 551, head slot; 552, Tail groove; 553, convex block; 512, pipe mouth; 513, embedded cylinder; 514, liquid hole; 515, rubber sealing ring; 533, ring groove; 56, cover shell; 41, main body cross arm; 42, concave cross groove; 43, arm sleeve; 44, rack; 45, motor two; 46, gear; 47, column; 21, crossbeam plate; 22, motor three; 23, swivel column; 24, flat key shaft; 25, spline end shaft; 31, support arm; 32, threaded shaft; 33, motor four; 34, clamping plate; 35, electric cylinder. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Reference Figure 1 and Figure 2The present invention provides an inner star wheel ballway grinding device, comprising an assembly platform 1, a rotating support platform 2 and a lifting clamping arm 3 are installed on the inner wall of the assembly platform 1, a lateral control arm 4 is installed on the top of the assembly platform 1, and a grinding mechanism 5 is installed at the output end of the lateral control arm 4; The grinding mechanism 5 includes a U-shaped fixing frame 51, a motor 52 is rotatably sleeved on the inner wall of the U-shaped fixing frame 51, a motor 52 is installed on the back of the U-shaped fixing frame 51, an output end of the motor 52 passes through the motor 52 and is connected to a turntable 53, a plurality of contact slots 55 are opened on the side wall of the turntable 53, and a grinding contact 54 is slidably sleeved inside the plurality of contact slots 55; A plurality of grinding contacts 54 slide outwards due to the centrifugal force of the rotating disk 53, and a plurality of grinding contacts 54 contract due to the grinding pressure overload, thereby achieving grinding pressure self-adaptation; The inner cavity of the rotating disk 53 is provided with a plurality of liquid channels 531, and the polishing ends of the plurality of polishing contacts 54 are provided with liquid outlets 544 connected with the liquid channels 531; The plurality of grinding contacts 54 automatically retract when not subjected to centrifugal force, and are used to close the water outlet 544 .

[0020] The inner star wheel a is installed on the rotating support table 2 and fixed by the lifting clamping arm 3, and the grinding mechanism 5 is operated to contact the ball track of the inner star wheel a for grinding. During grinding, the lifting clamping arm 3 is used to control the vertical displacement of the inner star wheel a, and the lateral displacement of the grinding mechanism 5 is controlled by the transverse control arm 4 to set the grinding stroke to achieve grinding along the ball track of the inner star wheel a. The inner star wheel a can be rotated by the output of the rotating support table 2 to grind another ball track. When the grinding mechanism 5 is running, the motor 52 outputs power to drive the turntable 53 to rotate at a high speed to generate centrifugal force. At this time, a number of grinding contacts 54 slide inside the contact slot 55 under the action of centrifugal force to expand outward, and a number of grinding contacts 54 are used to contact the ball track for grinding. When an error occurs in the grinding stroke, resulting in excessive contact pressure between the grinding contacts 54 and the ball track That is, the pressure on the grinding contact 54 is higher than the centrifugal force it receives. At this time, the grinding contact 54 contracts toward the inside of the contact slot 55 to achieve an adaptive grinding pressure adjustment effect, thereby avoiding damage to the grinding workpiece and the grinding mechanism caused by excessive grinding pressure. In addition, the force of the grinding contact 54 being compressed and contracted is affected by the centrifugal force of the rotation of the turntable 53. The centrifugal force can be adjusted by controlling the output speed of the motor 52, so that the grinding mechanism can adjust the grinding pressure to match the grinding workpieces of different materials. Through the structural setting of the turntable 53 and the grinding contact 54, the coolant is injected into the inner cavity of the turntable 53, and the coolant enters into several liquid channels 531 respectively, and is sprayed out through the rack 44 of the grinding contact 54, so that the coolant can reach the grinding location more accurately for cooling, thereby achieving a better cooling effect.

[0021] Reference Figure 4A plurality of grinding contacts 54 are provided with slide grooves at the bottom, and a plurality of contact grooves 55 are provided with protrusions 553 on the inner walls. The protrusions 553 are slidably sleeved in the slide grooves of the grinding contacts 54, and the protrusions 553 are transmission-connected to the inner walls of the slide grooves through tension springs 543.

[0022] This arrangement allows the turntable 53 to automatically retract into the contact slots 55 under the influence of the tension of the tension spring 543 when it stops rotating, i.e. when there is no centrifugal force, to achieve a protective effect, thereby preventing the grinding contacts 54 from being damaged by collision. At the same time, the protrusion 553 cooperates in the slide slot at the bottom of the grinding contact 54 to prevent the grinding contact 54 from falling off.

[0023] Reference Figure 3 , 4 The polishing contact 54 is composed of a main body contact 541 and a tail block 542. The tail block 542 is fixedly connected to one side of the main body contact 541. The thickness of the tail block 542 is less than that of the main body contact 541. The liquid outlet 544 runs through one side of the main body contact 541 to the other side. The contact slot 55 is composed of a head slot 551 and a tail slot 552. The main body contact 541 fits inside the tail slot 552, and the tail block 542 fits on the inner wall of the tail slot 552. The plurality of liquid channels 531 are connected to the inside of the head slot 551 of the plurality of contact slots 55 through the liquid passage 532. When the polishing contact 54 is retracted in the contact slot 55, the main body contact 541 blocks the liquid passage 532. The front side of the U-shaped fixing frame 51 is provided with a water injection terminal connected to the inner cavity of the rotating disk 53.

[0024] When a number of grinding contacts 54 are expanded outward by centrifugal force, the main body contact 541 slides outward in the head groove 551 and cancels the blocking effect on the liquid passage 532. Since the thickness of the tail block 542 is less than the thickness of the main body contact 541, when the main body contact 541 slides outward, the head groove 551 is located at the top of the tail block 542 to form an independent transfer space. At this time, the coolant in the liquid channel 531 can enter the transfer space through the liquid passage 532, and the coolant in the transfer space flows to the grinding position through the liquid outlet 544. After the grinding contact 54 retracts, the main body contact 541 blocks the liquid passage 532, and the coolant cannot enter the transfer space, so that the liquid outlet 544 of the grinding contact 54 cannot discharge water, thereby achieving the effect of automatically closing the coolant output when the grinding mechanism 5 is not in operation, thereby reducing the consumption of coolant.

[0025] Reference Figure 5 , 67. An arc-shaped slot 545 is provided on the back of the tail block 542, and a slope surface 546 is provided on one side of the arc-shaped slot 545. A ring slot 533 communicating with the interior of the tail slot 552 is provided on the back of the turntable 53. A notched ring plate 511 is fixedly connected to the inner wall of the U-shaped fixing frame 51. The notched ring plate 511 is embedded in the ring slot 533, and the notched ring plate 511 is embedded in the arc-shaped slot 545.

[0026] The notched ring plate 511 can limit the sliding of the grinding contact 54 by the matching relationship between the notched ring plate 511 and the arc groove 545. Since the notched ring plate 511 is connected to the inner wall of the U-shaped fixing frame 51, when the rotating disk 53 rotates, the position of the notched ring plate 511 is relatively static. At this time, the tail block 542 is in a rotating state along the side wall of the notched ring plate 511. When the tail block 542 reaches the notch of the notched ring plate 511, the U-shaped fixing frame 51 can be separated from the arc groove 545 on the back of the tail block 542. At this time, the grinding contact 54 is not limited and slides outward. As the rotating disk 53 continues to rotate, the notched end of the notched ring plate 511 will contact the slope surface 546 on one side of the arc groove 545 and generate pressure. The surface 546 affects the tail block 542 to cause displacement, that is, the grinding contact 54 is prompted to retract and the notched ring plate 511 is re-embedded in the arc groove 545. The resulting effect is: under the centrifugal force of the rotating turntable 53, only the grinding contacts 54 located at the notched position of the notched ring plate 511 can slide and expand outward, and the remaining grinding contacts 54 are restricted from sliding by the notched ring plate 511. Through this arrangement, when the plurality of grinding contacts 54 rotate with the turntable 53, they can slide outward to spray coolant only when they reach a specific direction (the direction of the grinding position), and coolant cannot be sprayed in other directions, thereby avoiding multi-directional water spraying and causing unnecessary consumption.

[0027] Reference Figure 4 A plurality of rollers 547 are disposed on the side of the plurality of grinding contacts 54 away from the liquid passage 532 .

[0028] When the coolant in the liquid channel 531 enters the transfer space of the head groove 551 through the liquid passage 532, a certain pressure will be generated on the grinding contact 54. This pressure will cause a greater friction between the side of the grinding contact 54 away from the liquid passage 532 and the inner wall of the contact groove 55, affecting the sliding of the grinding contact 54. Therefore, the friction effect is reduced by setting the roller 547.

[0029] Reference Figure 8The water injection end includes a pipe mouth 512 and an embedded cylinder 513. The embedded cylinder 513 is fixedly connected to the inner wall of the U-shaped fixing frame 51 and extends into the inner cavity of the turntable 53. The pipe mouth 512 is fixedly installed on the front side of the U-shaped fixing frame 51 and penetrates into the inner cavity of the embedded cylinder 513. The inner cavity of the embedded cylinder 513 is provided with a plurality of liquid holes 514 that penetrate to the side wall. A sealing plate is provided at the back end of the inner cavity of the embedded cylinder 513. Two rubber sealing rings 515 are provided on the side wall of the embedded cylinder 513 to contact the inner wall of the turntable 53. The plurality of liquid holes 514 are located in the gap between the two rubber sealing rings 515.

[0030] When in use, the coolant output pipeline is connected through the pipe mouth 512, and the coolant enters the inner cavity of the embedded tube 513 through the pipe mouth 512. Since the back end of the inner cavity of the embedded tube 513 is closed by a sealing plate, the coolant can only be discharged through the liquid hole 514. In addition, the coolant discharged from the liquid hole 514 can be sealed by two rubber sealing rings 515 to ensure that the coolant can only flow into the liquid channel 531 in the inner cavity of the turntable 53 to prevent leakage. Through this structural setting, it is also possible to prevent the rotation of the turntable 53 from causing twisting of the water injection end, thereby affecting the connection of the coolant infusion tube.

[0031] Reference Fig. 9 A cover shell 56 is installed on the side wall of the U-shaped fixing frame 51, the turntable 53 is located inside the cover shell 56, and a notch is provided on one side of the cover shell 56.

[0032] By providing the cover 56 , the coolant that is not sprayed toward the grinding contact 54 in the grinding direction can be intercepted to prevent the coolant from spreading over a large area and causing pollution. The grinding piece can contact the grinding contact 54 through the notch of the cover 56 .

[0033] Reference Fig. 9 The lateral control arm 4 includes a main body cross arm 41, and an arm sleeve 43 is slidably sleeved on the side wall of the main body cross arm 41. The bottom of the arm sleeve 43 is fixedly installed on the top of the assembly table 1 through a column 47. The side wall of the main body cross arm 41 is provided with a concave transverse groove 42, and a rack 44 is fixedly connected in the concave transverse groove 42. A motor 2 45 is fixedly installed on the outer wall of the arm sleeve 43. The output end of the motor 2 45 passes through the arm sleeve 43 and probes into the concave transverse groove 42. The output end of the motor 2 45 is fixedly connected with a gear 46, and the gear 46 is meshed with the rack 44. A U-shaped fixing frame 51 is fixedly installed at one end of the main body cross arm 41.

[0034] The gear 46 is driven to rotate by outputting power therefrom. Under the meshing relationship between the gear 46 and the rack 44 , the rack 44 can drive the main cross arm 41 to slide laterally, thereby realizing the output of the transverse control arm 4 to control the lateral displacement of the grinding mechanism 5 .

[0035] Reference Fig.10The rotating support platform 2 includes a cross beam plate 21, a motor 22 is fixedly installed at the bottom of the cross beam plate 21, the output end of the motor 22 passes through the cross beam plate 21 and is connected to a flat key shaft 24, a rotary column 23 is slidably sleeved on the side wall of the flat key shaft 24, a spline end shaft 25 is fixedly connected to the top of the rotary column 23, and an annular groove is opened on the side wall of the rotary column 23, and the annular groove is connected to the lifting clamping arm 3.

[0036] A connection is formed by inserting the inner star wheel a into the side wall of the spline end shaft 25. Since the inner wall of the inner star wheel a is usually provided with a spline groove for connecting the shaft, a good connection effect can be achieved through the spline end shaft 25. The flat key shaft 24 is driven to rotate by the output power of the motor 3 22, and the rotary column 23 is driven to rotate by the flat key shaft 24, thereby controlling the rotation of the inner star wheel a. The matching relationship between the flat key shaft 24 and the rotary column 23 can avoid the rotating support platform 2 from affecting the telescopic output of the lifting clamping arm 3.

[0037] Reference Fig.10 The lifting clamping arm 3 includes a support arm 31 and two electric cylinders 35. Two rail grooves are arranged on the top of the support arm 31. Clamp plates 34 are slidably sleeved in the two rail grooves. Threaded shafts 32 are rotatably sleeved in the two rail grooves of the support arm 31. The threads of the two threaded shafts 32 are in opposite directions. The two clamp plates 34 are respectively threadedly sleeved on the side walls of the two threaded shafts 32. Motors 33 are installed at both ends of the support arm 31. The two motors 33 are respectively used to drive the two threaded shafts 32 to rotate. The output ends of the two electric cylinders 35 are connected to the two ends of the support arm 31. A circular through hole is opened on the top of the support arm 31, and the inner wall of the circular through hole is embedded in the annular groove of the rotary column 23.

[0038] The two motors 33 output power to drive the two threaded shafts 32 to rotate, and the two clamping plates 34 are controlled to move in different directions according to the thread structure to achieve the clamping effect on the inner star wheel a, thereby forming a fixation. Through the matching relationship between the circular through hole of the support arm 31 and the annular groove on the side wall of the rotary column 23, the electric cylinder 35 can output to drive the support arm 31 to rise and fall, and the rotary column 23 and the clamping plate 34 can be lifted and lowered by the lifting and lowering of the support arm 31, thereby controlling the vertical displacement of the inner star wheel a and preventing interference with the rotation of the rotary column 23.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. The present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An inner star wheel ballway polishing device, characterized in that: It comprises an assembly platform (1), wherein a rotating support platform (2) and a lifting clamping arm (3) are installed on the inner wall of the assembly platform (1), a lateral movement control arm (4) is installed on the top of the assembly platform (1), and a grinding mechanism (5) is installed on the output end of the lateral movement control arm (4); The grinding mechanism (5) comprises a U-shaped fixing frame (51), the inner wall of the U-shaped fixing frame (51) is rotatably sleeved with a motor 1 (52), the back of the U-shaped fixing frame (51) is equipped with a motor 1 (52), the output end of the motor 1 (52) passes through the motor 1 (52) and is connected to a rotating disk (53), the side wall of the rotating disk (53) is provided with a plurality of contact slots (55), and a grinding contact (54) is slidably sleeved inside each of the plurality of contact slots (55); A plurality of the grinding contacts (54) are slid and expanded outward by the centrifugal force of the rotating disk (53) during rotation, and a plurality of the grinding contacts (54) are contracted by the grinding pressure overload, thereby achieving grinding pressure self-adaptation; The inner cavity of the rotating disk (53) is provided with a plurality of liquid channels (531), and the polishing ends of the plurality of polishing contacts (54) are provided with liquid outlets (544) connected to the liquid channels (531); The plurality of grinding contacts (54) automatically retract when not subjected to centrifugal force, and are used to close the liquid outlet (544).

2. The inner star wheel ballway polishing device according to claim 1, characterized in that: A plurality of the grinding contacts (54) are provided with a slide groove at the bottom, and a plurality of the contact grooves (55) are provided with a protrusion (553) on the inner wall. The protrusion (553) is slidably sleeved in the grinding contact (54) slide groove, and the protrusion (553) is transmission-connected to the inner wall of the slide groove via a tension spring (543).

3. The inner star wheel ballway polishing device according to claim 1, characterized in that: The grinding contact (54) is composed of a main body contact (541) and a tail block (542); the tail block (542) is fixedly connected to one side of the main body contact (541); the thickness of the tail block (542) is smaller than that of the main body contact (541); and the liquid outlet (544) penetrates from one side of the main body contact (541) to the other side; The contact slot (55) is composed of a head slot (551) and a tail slot (552); the main body contact (541) fits inside the tail slot (552), and the tail block (542) fits on the inner wall of the tail slot (552); the plurality of liquid channels (531) are connected to the inside of the head slot (551) of the plurality of contact slots (55) through the liquid passage opening (532); when the grinding contact (54) is retracted in the contact slot (55), the main body contact (541) blocks the liquid passage opening (532); The front side of the U-shaped fixing frame (51) is provided with a water injection terminal connected to the inner cavity of the rotating disk (53).

4. The inner star wheel ballway polishing device according to claim 3, characterized in that: The tail block (542) is provided with an arc-shaped slot (545) on its back, and one side of the arc-shaped slot (545) is provided with a slope surface (546). The rotating disk (53) is provided with a ring slot (533) on its back that is in communication with the inside of the tail slot (552). A notched ring plate (511) is fixedly connected to the inner wall of the U-shaped fixing frame (51). The notched ring plate (511) is embedded in the ring slot (533), and the notched ring plate (511) is embedded in the arc-shaped slot (545).

5. The inner star wheel ballway polishing device according to claim 3, characterized in that: A plurality of rollers (547) are provided on a side of the plurality of grinding contacts (54) away from the liquid passage opening (532).

6. The inner star wheel ballway polishing device according to claim 3, characterized in that: The water injection end comprises a pipe mouth (512) and an embedded cylinder (513); the embedded cylinder (513) is fixedly connected to the inner wall of the U-shaped fixing frame (51) and extends into the inner cavity of the rotating disk (53); the pipe mouth (512) is fixedly installed on the front of the U-shaped fixing frame (51) and penetrates into the inner cavity of the embedded cylinder (513); the inner cavity of the embedded cylinder (513) is provided with a plurality of liquid-passing holes (514) penetrating to the side wall; a sealing plate is provided at the back end of the inner cavity of the embedded cylinder (513); two rubber sealing rings (515) are provided on the side wall of the embedded cylinder (513) and contact the inner wall of the rotating disk (53); and the plurality of liquid-passing holes (514) are located at the gap between the two rubber sealing rings (515).

7. The inner star wheel ballway polishing device according to claim 1, characterized in that: A cover shell (56) is installed on the side wall of the U-shaped fixing frame (51), the rotating disk (53) is located inside the cover shell (56), and a notch is provided on one side of the cover shell (56).

8. The inner star wheel ballway polishing device according to claim 1, characterized in that: The lateral control arm (4) comprises a main body cross arm (41), the side wall of the main body cross arm (41) is slidably sleeved with an arm sleeve (43), the bottom of the arm sleeve (43) is fixedly mounted on the top of the assembly platform (1) through a column (47), the side wall of the main body cross arm (41) is provided with an inner concave transverse groove (42), a rack (44) is fixedly connected in the inner concave transverse groove (42), a motor 2 (45) is fixedly mounted on the outer wall of the arm sleeve (43), the output end of the motor 2 (45) passes through the arm sleeve (43) and extends into the inner concave transverse groove (42), the output end of the motor 2 (45) is fixedly connected with a gear (46), the gear (46) is meshed with the rack (44), and the U-shaped fixing frame (51) is fixedly mounted on one end of the main body cross arm (41).

9. The inner star wheel ballway polishing device according to claim 1, characterized in that: The rotary support platform (2) comprises a cross beam plate (21), a motor three (22) is fixedly mounted on the bottom of the cross beam plate (21), an output end of the motor three (22) passes through the cross beam plate (21) and is connected to a flat key shaft (24), a rotary column (23) is slidably sleeved on the side wall of the flat key shaft (24), a spline end shaft (25) is fixedly connected to the top of the rotary column (23), and an annular groove is formed on the side wall of the rotary column (23), and the annular groove is connected to the lifting clamping arm (3).

10. The inner star wheel ballway polishing device according to claim 9, characterized in that: The lifting clamping arm (3) comprises a support arm (31) and two electric cylinders (35). Two rail grooves are arranged on the top of the support arm (31). Clamp plates (34) are slidably sleeved in the two rail grooves. Threaded shafts (32) are rotatably sleeved in the two rail grooves of the support arm (31). The threads of the two threaded shafts (32) are in opposite directions. The two clamp plates (34) are respectively threaded sleeved on the side walls of the two threaded shafts (32). Motors (4) (33) are installed at both ends of the support arm (31). The two motors (33) are respectively used to drive the two threaded shafts (32) to rotate. The output ends of the two electric cylinders (35) are connected to the two ends of the support arm (31). A circular through hole is opened on the top of the support arm (31). The inner wall of the circular through hole is embedded in the annular groove of the rotary column (23).

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