Annular workpiece polishing device

Abstract

The invention relates to the technical field of workpiece grinding, in particular to an annular workpiece grinding device which comprises a base, a fixing assembly is arranged in the middle of the top face of the base, a vertical connecting rod and a fixing side plate are integrally formed on the edge of the top face of the base, and a workbench is fixedly connected to the top end of the vertical connecting rod. A linear sliding groove is formed in the middle of the workbench. According to the improved grinding device, the circular ring workpiece is fixed, centered and rotated through the fixing assembly, then the grinding assembly is started to drive the grinding abrasive paper to do circular motion around the outer surface of the circular ring workpiece, and the circular ring workpiece is ground. The grinding head can be avoided without halting to adjust the position of the circular ring workpiece or switching the clamp, a large amount of time is saved, the possibility that deviation is generated due to displacement of the circular ring workpiece when the clamp is switched is eliminated, the workpiece can be automatically cooled when the grinding assembly operates, and grinding powder is blown off from the surface of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece grinding, in particular to a circular workpiece grinding device. Background Art

[0002] A workpiece refers to a processing object in a mechanical processing process. It can be a single part or a combination of several parts fixed together. There are various types of workpiece processing methods, including turning, milling, planing, grinding, casting, forging, etc. The processing procedures of the workpiece also change with the changes in the processing methods. During the processing of the workpiece, it is necessary to grind it to ensure the smoothness of the workpiece surface. When grinding an annular workpiece, because the annular workpiece has an inner and outer ring, if the annular workpiece is to be fully ground, it is often necessary to loosen and clamp it multiple times during the grinding process, which is very cumbersome and reduces the grinding efficiency. Therefore, we have introduced a circular workpiece grinding device.

[0003] The existing patent (Announcement No.: CN119141385A) discloses a surface polishing device for annular castings, including a load-bearing body, the load-bearing body including: a load-bearing platform, the load-bearing platform is horizontally arranged; a first bracket and a second bracket, the first bracket and the second bracket are respectively vertically welded to the left and right ends of the load-bearing platform; an extension bracket and a guide slot, the extension bracket is integrally welded to the first bracket. The invention utilizes a load-bearing body with a gantry structure composed of a load-bearing platform, a symmetrically arranged first bracket and a second bracket, an extension bracket and a guide slot; a ball screw and a lifting nut driven to rotate by a second driving motor are arranged on the second bracket, and a polisher installed by a lifting hanger and a telescopic suspension is controlled to be lifted and lowered vertically according to the needs of polishing the inner and outer curved surfaces of the annular casting, so that the polisher is horizontally extended and retracted, thereby performing fixed-point polishing on the annular casting located at the midline of the load-bearing body. The existing technology has the following problems: the existing ring grinding device often needs to set up multiple sets of clamps to alternately fix the ring from the inner and outer circles of the ring to achieve the purpose of avoiding the grinding head. This method wastes time when switching the clamps and may cause the position of the ring workpiece to deviate. Because the running trajectory of the grinding head is based on a set program, once the workpiece position deviates, it will also cause missed grinding and other situations, affecting the quality of the final polished workpiece. Summary of the invention

[0004] The object of the present invention is to provide a circular ring-shaped workpiece grinding device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circular ring workpiece grinding device, comprising a base, a fixing assembly is provided in the middle of the top surface of the base, the top surface edges of the base are respectively integrally formed with a vertical connecting rod and a fixed side plate, the top of the vertical connecting rod is fixedly connected to a workbench, a plurality of linear slide grooves extending radially thereof are provided on the workbench, a grinding assembly is provided on the top outer side of the fixing assembly, and the top outer side of the fixing assembly is used to sleeve the circular ring workpiece body;

[0006] The fixing assembly includes a driving motor fixedly connected to the middle of the top surface of the base, the output end of the driving motor is fixedly connected to the main bevel gear, the top surface of the main bevel gear is fixedly connected to a limiting column, the outer surface of the limiting column is integrally formed with a toggle column extending radially thereof, the toggle column is inserted into the inside of the toggle groove, and the toggle groove is arranged at the bottom end of the clutch cylinder, and the two sides of the toggle groove are inclined surfaces; the other end of the clutch cylinder is provided with an L-groove, the L-groove is on the outer surface of the clutch cylinder, and a follower rod that can slide along it is inserted into the inside of the L-groove, and the follower rod is integrally formed on the inner wall of the hole in the center of the driving disk; the surface of the driving disk is provided with an arc groove, the top end of the clutch cylinder is fixedly connected to a telescopic spring, the top end of the telescopic spring is fixedly connected to the bottom surface of the rotating disk, and the bottom edge of the rotating disk is fixedly connected to a connecting rod, and the end of the connecting rod away from the rotating disk is fixedly connected to the top edge of the workbench.

[0007] Preferably, auxiliary bevel gears meshing with the main bevel gear are arranged around the main bevel gear, a cylindrical gear is fixedly connected to the middle of the side of the auxiliary bevel gear away from the main bevel gear, and a horizontal axis is integrally formed at the end of the cylindrical gear away from the main bevel gear; a face gear meshing with the main bevel gear is also provided on the outer side of the cylindrical gear, a support shaft is fixedly connected to the top surface of the face gear, an inner support roller is fixedly connected to the top end of the support shaft, and an I-shaped slider is rotatably connected to the middle part of the support shaft, and the middle section of the I-shaped slider is slidably matched with the linear slide groove.

[0008] Preferably, one end of the cylindrical gear connected to the horizontal axis is located in the projection area directly below the face gear.

[0009] Preferably, one end of the horizontal shaft away from the cylindrical gear is rotatably connected to the inner side of the fixed side plate, and the middle part of the support shaft passes through the arc groove.

[0010] Preferably, there are three groups of inner support rollers, which are equiangularly distributed on the workbench, and the diameters of the inner support rollers gradually increase from the middle to both ends.

[0011] Preferably, the grinding assembly includes a cylinder fixedly mounted on one end of a connecting rod close to the workbench, a sliding seat which can slide along its axis is also mounted on the connecting rod, and the output end of the cylinder is connected to the sliding seat; an arc-shaped outer shell is fixedly connected to the top of the sliding seat, and a grinding motor is fixedly connected to one side of the arc-shaped outer shell through a mounting plate, and the output end of the grinding motor is fixedly connected to a driving shaft, and a main pulley and a main gear are mounted on the driving shaft.

[0012] Preferably, secondary pulleys and secondary gears are installed at both ends of the arc-shaped housing through a driving shaft, and the main pulley and the secondary pulley form a transmission structure through a transmission belt.

[0013] Preferably, one end of the driving shaft passes through the side of the arc-shaped outer shell and is installed with a centrifugal impeller, the outer side of the centrifugal impeller is sleeved with a centrifugal outer shell, the centrifugal outer shell is fixedly connected to the outer side of the arc-shaped outer shell, and an air inlet is provided in the middle of a side of the centrifugal outer shell away from the arc-shaped outer shell, and an air outlet is provided on the outer ring of the centrifugal outer shell.

[0014] Preferably, the inner wall edge of the arc-shaped shell is integrally formed with a limiting convex strip, and a grinding ring is also provided on the inner side of the arc-shaped shell, and limiting grooves are provided on both sides of the grinding ring for sliding cooperation with the limiting convex strip; a gear ring is provided on the outer cylindrical surface of the grinding ring, and a grinding sandpaper is also provided on the inner ring of the grinding ring.

[0015] Preferably, the grinding ring and the arc-shaped outer shell are both three-quarters of a circle, the main gear is located in the inner middle section of the arc-shaped outer shell, the two sub-gears are respectively located at the inner ends of the arc-shaped outer shell, and the main gear and the sub-gear are both meshed with the ring gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In the present invention, the annular workpiece body is sleeved outside the inner support rollers and the fixing assembly is started to drive the three groups of inner support rollers to expand synchronously, thereby internally supporting and fixing the annular workpiece body. In addition, during the process of fixing the annular workpiece body, the inner support rollers can also automatically center the annular workpiece body so that the workpiece and the axis of the grinding ring are at the same height, without the need to spend extra time to calibrate the height later.

[0018] In the present invention, the automatic uniform rotation of the annular workpiece body is achieved through the self-rotation of the inner support roller in the fixed component, ensuring that every part of the surface of the annular workpiece body can pass through the middle of the grinding ring to prevent the occurrence of missed grinding areas, and the grinding component realizes comprehensive rotational grinding of the annular workpiece body through the self-rotation of the grinding ring. The grinding device is smoother during grinding, and there is no need to stop the machine to adjust the position of the annular workpiece or switch the fixture to avoid the grinding head, which saves a lot of time and eliminates the possibility of displacement and deviation of the annular workpiece when switching the fixture.

[0019] In the present invention, when the grinding component is in operation, it will also drive the centrifugal impeller to rotate, blowing gas from the air outlet of the centrifugal shell to the surface of the annular workpiece body. On the one hand, the grinding powder can be blown off the surface of the workpiece, and on the other hand, the workpiece can be cooled to prevent the temperature from being too high during grinding, or the worker may be burned when directly picking up the annular workpiece after grinding is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a front view cross-sectional three-dimensional structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the main three-dimensional structure of the fixing assembly of the present invention;

[0023] Figure 4 It is a schematic diagram of the front three-dimensional structure of the clutch cylinder of the present invention;

[0024] Figure 5 For the present invention Figure 4 A is an enlarged structural diagram;

[0025] Figure 6 It is a schematic diagram of the partial explosion structure of the clutch cylinder of the present invention;

[0026] Figure 7 This is a schematic diagram of the exploded structure of the grinding assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the rear three-dimensional structure of the arc-shaped housing of the present invention.

[0028] In the figure: 1, base; 2, fixing assembly; 201, driving motor; 202, main bevel gear; 203, limiting column; 204, toggle column; 205, toggle slot; 206, clutch cylinder; 207, L slot; 208, follower rod; 209, driving plate; 2010, telescopic spring; 2011, rotating plate; 2012, connecting rod; 2013, auxiliary bevel gear; 2014, cylindrical gear; 2015, horizontal shaft; 2016, face gear; 2017, supporting shaft; 2018, inner support roller; 2019, I-shaped slider; 2020, Arc groove; 3, grinding assembly; 301, cylinder; 302, sliding seat; 303, arc-shaped shell; 304, grinding motor; 305, driving shaft; 306, main pulley; 307, main gear; 308, secondary pulley; 309, secondary gear; 3010, centrifugal impeller; 3011, centrifugal shell; 3012, limiting convex strip; 3013, limiting slide groove; 3014, grinding ring; 3015, gear ring; 3016, grinding sandpaper; 4, vertical connecting rod; 5, fixed side plate; 6, workbench; 7, linear slide groove; 8, circular workpiece body. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 8 The present invention provides a technical solution: a circular workpiece grinding device, comprising a base 1, a fixing component 2 is provided in the middle of the top surface of the base 1, a vertical connecting rod 4 and a fixed side plate 5 are respectively integrally formed on the top surface edges of the base 1, a top of the vertical connecting rod 4 is fixedly connected to a workbench 6, a plurality of linear slide grooves 7 extending along the radial direction of the workbench 6 are provided in the middle of the workbench 6, and the plurality of linear slide grooves 7 are evenly spaced and arranged along the circumferential direction of the workbench 6, a grinding component 3 is provided on one side of the top of the fixing component 2, and a circular workpiece body 8 is sleeved on the outer side of the fixing component 2.

[0031] In this embodiment, Figures 1 to 6As shown, the fixing assembly 2 includes a driving motor 201 fixedly connected to the middle of the top surface of the base 1, the output end of the driving motor 201 is fixedly connected to the main bevel gear 202, the top surface of the main bevel gear 202 is fixedly connected to a limiting column 203, the outer surface of the limiting column 203 is integrally formed with a toggle column 204, the extended end of the toggle column 204 is inserted into the toggle groove 205, the toggle groove 205 is provided at the bottom end of the clutch cylinder 206, and the limiting column 203 is inserted into the clutch cylinder 206, the lower end of the clutch cylinder 206 has a notch for the toggle column 204 to be inserted, and at the same time, the toggle groove 20 The two sides of the driving disk 209 are inclined surfaces, so that the opening width of the toggle groove 205 is greater than the width of the bottom of the toggle groove 205; the other end of the clutch cylinder 206 is provided with an L groove 207, and the L groove 207 is connected to the outer surface of the clutch cylinder 206. A follower rod 208 that can slide along the L groove 207 is inserted inside the L groove 207. The follower rod 208 is integrally formed on the inner wall of the hole in the center of the driving disk 209. The surface of the driving disk 209 is provided with an arc groove 2020. The top of the clutch cylinder 206 is fixedly connected to a telescopic spring 2010, and the top of the telescopic spring 2010 is fixedly connected to the bottom of the rotating disk 211. The bottom edge of the rotating disk 2011 is fixedly connected with a plurality of connecting rods 2012, and the plurality of connecting rods 2012 are evenly spaced and arranged along the circumferential direction of the rotating disk 2011. The plurality of connecting rods 2012 are L-shaped, and the diameter of the cylinder formed by the inner ends of the plurality of connecting rods 2012 is larger than the diameter of the clutch cylinder 206, and the end of the connecting rod 2012 away from the rotating disk 2011 is fixedly connected to the top edge of the workbench 6; the main bevel gear 202 is also surrounded by a secondary bevel gear 2013 meshing with it, and the secondary bevel gear 2013 is fixed in the middle of one side away from the main bevel gear 202 A cylindrical gear 2014 is fixedly connected, and a horizontal shaft 2015 is integrally formed at one end of the cylindrical gear 2014 away from the main bevel gear 202, and the extended end of the horizontal shaft 2015 is rotatably mounted on the fixed side plate 5; a face gear 2016 meshing with the cylindrical gear 2014 is also provided on the outer side of the cylindrical gear 2014, and a support shaft 2017 is fixedly connected to the top surface of the face gear 2016, and an inner support roller 2018 is fixedly connected to the top of the support shaft 2017, and an I-shaped slider 2019 is rotatably connected to the middle part of the support shaft 2017, and the middle section of the I-shaped slider 2019 slides in cooperation with the linear slide groove 7.

[0032] When in use, first sleeve the annular workpiece body 8 on the outside of the three inner support rollers 2018, start the driving motor 201 to drive the main bevel gear 202 to rotate, and the main bevel gear 202 can drive the top limit column 203 to rotate when it rotates. When the limit column 203 rotates, it drives the entire clutch cylinder 206 to rotate by squeezing one end of the toggle groove 205 through the toggle column 204. When the clutch cylinder 206 rotates, it squeezes the follower rod 208 through the L groove 207 to drive the driving disk 209 to rotate. It should be noted here that the follower rod 208 is located in the vertical section of the L groove 207 in the initial state. The bottom surface of the driving disk 209 has an annular cylinder rotatably connected to the workbench 6, and when the driving disk 209 rotates, The rotation of the driving disk 209 will squeeze the support shaft 2017 through the arc groove 2020 to move. Since the support shaft 2017 rotates and passes through the middle of the I-shaped slider 2019, and the I-shaped slider 2019 can only slide along the linear slide groove 7, the three groups of support shafts 2017 can drive the inner support rollers 2018 at the top to move away from the middle of the workbench 6 to internally support and fix the annular workpiece body 8; when the inner support rollers 2018 contact the inner ring of the annular workpiece body 8, the inner support rollers 2018 at this time cannot move to the edge of the workbench 6, that is, the driving disk 209 cannot continue to squeeze the support shaft 2017 through the arc groove 2020, and the clutch cylinder 206 cannot continue to squeeze through the L groove 207 The follower rod 208 drives the driving disk 209 to rotate, but the limiting column 203 continues to rotate under the drive of the driving motor 201. At this time, the toggle column 204 on the outer surface of the limiting column 203 will slide along the rounded edge of the toggle groove 205, squeezing and lifting the entire clutch cylinder 206 upward; it should be noted that the inner corner of the L groove 207 is also rounded, and the toggle column 204 is disengaged from the toggle groove 205 to the bottom end of the clutch cylinder 206. At the same time, due to the upward movement of the clutch cylinder 206, the follower rod 208 also enters the horizontal section from the vertical section of the L groove 207, limiting the clutch cylinder 206 to prevent the clutch cylinder 206 from actively descending and resetting; when the toggle column 204 is removed from the toggle groove 205, the clutch cylinder 206 is not relocated. After the toggle post 204 is disengaged from the movable groove 205, the toggle post 204 can no longer continue to drive the clutch cylinder 206 to rotate, so that the power transmission between the drive motor 201 and the drive disk 209 is disconnected. If the clutch cylinder 206 needs to be reset, it is only necessary to reverse the drive motor 201 to drive the toggle post 204 to reverse. Since the outer surface of the toggle post 204 is provided with many protrusions, and the bottom end of the clutch cylinder 206 is also provided with corresponding grooves, the friction between the toggle post 204 and the bottom end of the clutch cylinder 206 is large at this time, which drives the clutch cylinder 206 to reverse. When the clutch cylinder 206 reverses, it drives the inner support roller 2018 to gradually separate from the annular workpiece body 8 without being hindered, so that the clutch cylinder 206 can be driven to slowly reverse.When the vertical section of the L groove 207 of the clutch cylinder 206 rotates to the top of the follower rod 208, and the toggle column 204 rotates to the bottom of the toggle groove 205 again, the telescopic spring 2010 rebounds to move the clutch cylinder 206 downward to complete the reset. When the main bevel gear 202 rotates, it will also drive the secondary bevel gear 2013 to rotate, and the secondary bevel gear 2013 will drive the cylindrical gear 2014 to rotate with the horizontal axis 2015 as the axis. The cylindrical gear 2014 rotates to drive the face gear 216 to rotate with the support shaft 217 as the axis, and the support shaft 217 drives the inner support roller 218 to rotate, thereby realizing the uniform and slow rotation of the annular workpiece body 8, so that each part of the surface of the annular workpiece body 8 is polished by the polishing assembly 3 in sequence. ;

[0033] In this embodiment, Figure 1 and Figure 3 As shown, one end of the cylindrical gear 2014 connected to the horizontal shaft 2015 is located in the projection area directly below the face gear 2016; the diameter of the face gear 2016 is relatively large, and this structure is mainly to prevent the cylindrical gear 2014 from having two meshing points with the bottom teeth of the face gear 2016 when the face gear 2016 approaches the middle of the workbench 6 along the linear slide 7, thereby causing interference. The end of the horizontal shaft 2015 away from the cylindrical gear 2014 is rotatably connected to the inner side of the fixed side plate 5, supporting The support shaft 2017 passes through the middle of the arc groove 2020, and the diameter of the support shaft 2017 is adapted to the width of the arc groove 2020; the fixed side plate 5 can play a role in installing the cylindrical gear 2014, ensuring that the cylindrical gear 2014 can rotate about its own axis, and the support shaft 2017 passes through the middle of the arc groove 2020. When the arc groove 2020 rotates with the drive disk 209, it can squeeze the support shaft 2017, thereby causing the support shaft 2017 to displace.

[0034] In this embodiment, Figure 1 and Figure 3 As shown, there are three groups of inner support rollers 2018, and the three groups of inner support rollers 2018 are equiangularly distributed in the middle of the workbench 6, and the diameter of the inner support rollers 2018 gradually increases from the middle to the two ends; when the three groups of inner support rollers 2018 move toward the edge of the workbench 6 at the same time, the annular workpiece body 8 can be supported and fixed from the inner ring of the annular workpiece body 8, and due to the structure of the inner support rollers 2018 that are thin in the middle and thick at both ends, during the internal support process, the annular workpiece body 8 is automatically centered to the middle of the inner support rollers 2018. Since the height of the grinding assembly 3 is fixed, this structure achieves the purpose of automatically adjusting the horizontal center plane of the annular workpiece body 8 and the center axis of the grinding ring 3014 in the grinding assembly 3 to the same height.

[0035] In this embodiment, Figure 1 , Figure 7 and Figure 8As shown, the grinding assembly 3 includes a cylinder 301 fixedly mounted on one end of the connecting rod 2012 close to the workbench 6, and a sliding seat 302 that can slide along its axis is also mounted on the connecting rod 2012, the output end of the cylinder 301 is connected to the sliding seat 302, the top of the sliding seat 302 is fixedly connected with an arc-shaped shell 303, one side of the arc-shaped shell 303 is fixedly connected with a grinding motor 304 through a mounting plate, the output end of the grinding motor 304 is fixedly connected with a driving shaft 305, and the driving shaft 305 is fixedly passed through the middle of the main pulley 306 and the main gear 307 at the same time, the main pulley 306 forms a transmission structure with the secondary pulley 308 through a transmission belt, and the secondary pulley 308 is connected to the secondary gear 309 through the driving shaft 305; there are three groups of driving shafts 305, which are respectively fixed and passed through the middle of two secondary gears 309 and one main gear 307.

[0036] When in use, the cylinder 301 will push the sliding seat 302 to move toward the middle of the workbench 6, so that the grinding sandpaper 3016 is attached to one side of the outer ring of the circular workpiece body 8, and then the grinding motor 304 is started to drive the drive shaft 305 to rotate, and the drive shaft 305 drives the main pulley 306, the main gear 307 and the centrifugal impeller 3010 to rotate, and the main pulley 306 drives the two secondary pulleys 308 to rotate through the transmission belt, and the secondary pulley 308 will drive the secondary gear 309 to rotate, and the main gear 307 and the secondary gear 309 rotate synchronously and at the same speed, and finally drive the ring gear 3015 to realize the rotation of the grinding ring 3014. When the grinding ring 3014 rotates, the grinding sandpaper 3016 in the middle can grind the circular workpiece body 8 360°, and cooperate with the fixing component 2 to make the circular workpiece body 8 rotate, so as to realize the all-round grinding of the circular workpiece body 8.

[0037] In this embodiment, Figure 7 and Figure 8 As shown, the drive shaft 305 passes through the arc-shaped shell 303 and extends to the outside of the arc-shaped shell 303, and is connected to the centrifugal impeller 3010. The outside of the centrifugal impeller 3010 is sleeved with a centrifugal shell 3011, and the centrifugal shell 3011 is fixedly connected to the outside of the arc-shaped shell 303. An air inlet is provided in the middle of the side of the centrifugal shell 3011 away from the arc-shaped shell 303, and an air outlet is provided on the outer ring of the centrifugal shell 3011; through the rotation of the centrifugal impeller 3010, external air can be sucked into the centrifugal shell 3011 from the air inlet, and under the rotation of the centrifugal impeller 3010, the air entering the centrifugal shell 3011 is discharged from the air outlet of the centrifugal shell 3011 by centrifugal force. Note that the air outlet of the centrifugal shell 3011 faces the location of the circular workpiece body 8, and the air outlet of the centrifugal shell 3011 faces the same radial direction as the circular workpiece body 8.

[0038] In this embodiment, Figure 7As shown, the inner edge of the arc-shaped shell 303 is integrally formed with a limiting convex strip 3012, and the inner side of the limiting convex strip 3012 is slidably connected to the inside of the limiting slide groove 3013. The limiting slide groove 3013 is arranged on both sides of the grinding ring 3014, and a gear ring 3015 is arranged in the middle of the outer circumferential surface of the grinding ring 3014, and grinding sandpaper 3016 is arranged between the inner rings of the grinding ring 3014; the limiting convex strip 3012 can limit the grinding ring 3014 to prevent the grinding ring 3014 from detaching from the arc-shaped shell 303, and the gear ring 3015 is used to mesh with the main gear 307 and the sub-gear 309 to realize power transmission to the grinding ring 3014, so as to facilitate the self-rotation of the grinding ring 3014.

[0039] In this embodiment, Figure 7 and Figure 8 As shown, the grinding ring 3014 is rotatably connected to the inside of the arc-shaped housing 303, and the grinding ring 3014 and the arc-shaped housing 303 are both three-quarters of a circle, the main gear 307 is located in the inner middle section of the arc-shaped housing 303, and the two sub-gears 309 are respectively located at the inner ends of the arc-shaped housing 303, and the main gear 307 and the sub-gear 309 are both meshed with the ring gear 3015; the main gear 307 and the sub-gear 309 are driven by a transmission belt, so the main gear 307 and the sub-gear 309 rotate in the same direction, and the main gear 307 and the sub-gear 309 form a three-quarter ring, and the gap of the grinding ring 3014 is only a quarter of a circle, so this structure can always keep the grinding ring 3014 rotating about its own central axis.

[0040] The use method and advantages of the present invention: When the annular workpiece grinding device is used, the working process is as follows:

[0041] First, the annular workpiece body 8 is sleeved outside the inner support roller 2018, and the fixing component 2 is started to drive the three groups of inner support rollers 2018 to expand synchronously, so as to internally support and fix the annular workpiece body 8. Moreover, during the fixing process of the annular workpiece body 8, the inner support roller 2018 can also automatically center the annular workpiece body 8 so that the workpiece and the axis of the grinding ring 3014 are at the same height, without the need to spend extra time to calibrate the height. At the same time, the inner support roller 2018 in the fixing component 2 rotates by itself, realizing the automatic uniform rotation of the annular workpiece body 8, ensuring that every part of the surface of the annular workpiece body 8 can pass through the middle of the grinding ring 3014 to prevent leakage. The grinding area, and the grinding component 3 realizes comprehensive rotational grinding of the circular workpiece body 8 through the rotation of the grinding ring 3014. The present grinding device is smoother during grinding, and there is no need to stop the machine to adjust the position of the circular workpiece or switch the fixture to avoid the grinding head, which saves a lot of time and eliminates the possibility of displacement and deviation of the circular workpiece when switching the fixture. The grinding component 3 will also drive the centrifugal impeller 3010 to rotate, and blow the gas from the air outlet of the centrifugal housing 3011 to the surface of the circular workpiece body 8. On the one hand, the grinding powder can be blown off the surface of the workpiece, and on the other hand, the workpiece can be cooled to prevent the temperature from being too high during grinding, or the worker from being scalded by directly picking up the circular workpiece after grinding is completed.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A circular workpiece grinding device, comprising a base (1), characterized in that: A fixing assembly (2) is provided in the middle of the top surface of the base (1); a vertical connecting rod (4) and a fixed side plate (5) are integrally formed on the edges of the top surface of the base (1); a top end of the vertical connecting rod (4) is fixedly connected to a workbench (6); a plurality of linear slide grooves (7) extending radially thereof are provided on the workbench (6); a grinding assembly (3) is provided on the outer side of the top of the fixing assembly (2); and the outer side of the top of the fixing assembly (2) is used for sleeve-mounting a circular workpiece body (8); The fixing assembly (2) comprises a driving motor (201) fixedly connected to the middle of the top surface of the base (1); the output end of the driving motor (201) is fixedly connected to a main bevel gear (202); the top surface of the main bevel gear (202) is fixedly connected to a limiting column (203); the outer surface of the limiting column (203) is integrally formed with a toggle column (204) extending in its radial direction; the toggle column (204) is inserted into a toggle groove (205); the toggle groove (205) is provided at the bottom end of a clutch cylinder (206); both sides of the toggle groove (205) are inclined surfaces; the other end of the clutch cylinder (206) is provided with an L groove (207); the L groove (207) is connected to the clutch cylinder On the outer surface of (206), a follower rod (208) that can slide along the L-groove (207) is inserted inside, and the follower rod (208) is integrally formed on the inner wall of the hole in the center of the driving disk (209); the surface of the driving disk (209) is provided with an arc groove (2020), the top end of the clutch cylinder (206) is fixedly connected to a telescopic spring (2010), the top end of the telescopic spring (2010) is fixedly connected to the bottom surface of the rotating disk (2011), and the bottom edge of the rotating disk (2011) is fixedly connected to a connecting rod (2012), and the end of the connecting rod (2012) away from the rotating disk (2011) is fixedly connected to the top edge of the workbench (6).

2. A circular workpiece grinding device according to claim 1, characterized in that: Auxiliary bevel gears (2013) meshing with the main bevel gear (202) are arranged around the main bevel gear (202); a cylindrical gear (2014) is fixedly connected to the middle of the side of the auxiliary bevel gear (2013) away from the main bevel gear (202); a horizontal shaft (2015) is integrally formed at one end of the cylindrical gear (2014) away from the main bevel gear (202); a face gear (2016) meshing with the main bevel gear (202) is also arranged on the outside of the cylindrical gear (2014); a support shaft (2017) is fixedly connected to the top surface of the face gear (2016); an inner support roller (2018) is fixedly connected to the top of the support shaft (2017); and an I-shaped slider (2019) is rotatably connected to the middle of the support shaft (2017); and the middle section of the I-shaped slider (2019) is slidably matched with the linear slide groove (7).

3. The annular workpiece grinding device according to claim 2, characterized in that: One end of the cylindrical gear (2014) connected to the horizontal shaft (2015) is located in the projection area directly below the face gear (2016).

4. The annular workpiece grinding device according to claim 2, characterized in that: One end of the horizontal shaft (2015) away from the cylindrical gear (2014) is rotatably connected to the inner side of the fixed side plate (5), and the middle part of the support shaft (2017) passes through the arc groove (2020).

5. The annular workpiece grinding device according to claim 2, characterized in that: There are three groups of inner support rollers (2018) in total. The three groups of inner support rollers (2018) are equiangularly distributed on the workbench (6), and the diameters of the inner support rollers (2018) gradually increase from the middle to both ends.

6. The annular workpiece grinding device according to claim 1, characterized in that: The grinding assembly (3) comprises a cylinder (301) fixedly mounted on one end of a connecting rod (2012) close to a workbench (6); a sliding seat (302) which can slide along its axis is also mounted on the connecting rod (2012); an output end of the cylinder (301) is connected to the sliding seat (302); an arc-shaped housing (303) is fixedly connected to the top of the sliding seat (302); a grinding motor (304) is fixedly connected to one side of the arc-shaped housing (303) via a mounting plate; an output end of the grinding motor (304) is fixedly connected to a driving shaft (305); a main pulley (306) and a main gear (307) are mounted on the driving shaft (305).

7. The annular workpiece grinding device according to claim 6, characterized in that: A secondary pulley (308) and a secondary gear (309) are also installed at both ends of the arc-shaped housing (303) through a driving shaft (305), and the main pulley (306) forms a transmission structure with the secondary pulley (308) through a transmission belt.

8. The annular workpiece grinding device according to claim 6, characterized in that: One end of the driving shaft (305) passes through the side of the arc-shaped housing (303) and is installed with a centrifugal impeller (3010). The outer side of the centrifugal impeller (3010) is sleeved with a centrifugal housing (3011). The centrifugal housing (3011) is fixedly connected to the outer side of the arc-shaped housing (303). An air inlet is provided in the middle of a side of the centrifugal housing (3011) away from the arc-shaped housing (303), and an air outlet is provided on the outer ring of the centrifugal housing (3011).

9. The annular workpiece grinding device according to claim 7, characterized in that: The inner wall edge of the arc-shaped shell (303) is integrally formed with a limiting convex strip (3012), and a grinding ring (3014) is also provided on the inner side of the arc-shaped shell (303). Both sides of the grinding ring (3014) are provided with limiting sliding grooves (3013) that are slidably matched with the limiting convex strip (3012). The outer circumferential surface of the grinding ring (3014) is provided with a gear ring (3015), and the inner ring of the grinding ring (3014) is also provided with grinding sandpaper (3016).

10. The annular workpiece grinding device according to claim 9, characterized in that: The grinding ring (3014) and the arc-shaped housing (303) are both three-quarter circles, the main gear (307) is located in the inner middle section of the arc-shaped housing (303), the two sub-gears (309) are respectively located at the inner ends of the arc-shaped housing (303), and the main gear (307) and the sub-gear (309) are both meshed with the ring gear (3015).

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