Shell inner cavity burr polishing equipment for automobile oxygen sensor machining

Abstract

The invention discloses shell inner cavity burr polishing equipment for automobile oxygen sensor machining, and relates to the technical field of burr polishing, the shell inner cavity burr polishing equipment comprises a clamping assembly, the outer side of a shell of the clamping assembly is limited and fixed, and a supporting column is fixedly installed at the bottom of the clamping assembly. According to the shell inner cavity burr polishing equipment for automobile oxygen sensor machining, when an extension plate and a guide wheel are sleeved with a shell, the shell continuously moves downwards along with rotation of the guide wheel and covers the outer side of an adjusting plate, the adjusting plate makes contact with the inner wall of the shell, and at the moment, a damping rod is extruded by the inner wall of the shell and the adjusting plate to shrink and deform; when the adjusting plate drives the polishing piece to make contact with the inner wall of the shell, the adjusting plate rotates on the surface of the mounting block, the telescopic rod is made to rotate and move on the surface of the mounting shaft along with displacement of the adjusting plate, and therefore the polishing piece is attached to the interior of the inner wall of the shell, the inner wall of the shell is polished and ground when the polishing piece rotates, and the attaching tightness of the polishing piece and the inner wall of the shell is enhanced; the polishing efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of burr polishing, in particular to a burr polishing device for the inner cavity of a shell body used for processing an automobile oxygen sensor. Background Art

[0002] The automotive oxygen sensor is a key feedback sensor in the electronic fuel injection engine control system. It is a key component for controlling automobile exhaust emissions, reducing automobile pollution to the environment, and improving the fuel combustion quality of automobile engines. Oxygen sensors are all installed on the engine exhaust pipe.

[0003] Oxygen sensors use ceramic sensitive elements to measure the oxygen potential in various heating furnaces or exhaust ducts, and calculate the corresponding oxygen concentration based on the principle of chemical equilibrium, so as to monitor and control the air-fuel ratio of combustion in the furnace, ensure product quality and meet exhaust emission standards. They are widely used in atmosphere control of various coal combustion, oil combustion, gas combustion and other furnaces.

[0004] During the processing of the automotive oxygen sensor shell, burrs are easily generated in the shell cavity, which will affect the performance and reliability of the oxygen sensor. Traditional manual polishing or general polishing equipment is difficult to accurately polish the inner cavity of the oxygen sensor shell, and there are problems such as uneven polishing, low efficiency, and easy damage to the shell. Summary of the invention

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a shell inner cavity burr polishing device for processing an automotive oxygen sensor, comprising a clamping assembly, the outer side of the clamping assembly shell is limited and fixed, a support column is fixedly installed at the bottom of the clamping assembly, and a chip guide cover is fixedly installed at the top of the clamping assembly; A polishing assembly, which is used for fitting and polishing the inner cavity of the shell, a motor is fixedly installed at the bottom of the polishing assembly, and a guide assembly is rotatably installed at the top of the polishing assembly; The chip guide cover is fixedly installed between the tops of the clamping components, the motor is fixedly installed at the bottom of the clamping components, and the output end of the motor extends through the clamping components and the chip guide cover to the inside thereof, and the polishing component is rotatably installed inside the chip guide cover; when processing the automotive oxygen sensor, the sensor housing has burrs left by demoulding at the edge of the inner wall of the housing during production, and the burrs will cause wear to the components in the sensor during the subsequent sensor assembly and use. Therefore, it is necessary to polish the burrs in the inner cavity. At this time, the staff puts the outer shell cover on top of the guide component. At this time, the inner wall of the outer shell placed downward generates friction with the guide component to guide the outer shell to the inside of the clamping component, thereby clamping and positioning the outer shell, and then the staff starts the motor to make the polishing component rotate in the inner cavity of the housing, thereby grinding and polishing the burrs on the inner wall. The debris dropped during polishing slides along the chip guide cover and is collected in the clamping component to avoid splashing of debris generated by polishing.

[0006] Among them, the polishing assembly includes a protective sleeve, which is sleeved on the outer surface of the motor output end, the protective sleeve is fixedly installed inside the cavity of the chip guide cover, and the protective sleeve passes through the clamping assembly and extends to its bottom, and a connecting shaft is rotatably installed on the top of the protective sleeve, and the connecting shaft is fixedly connected to the output end of the motor.

[0007] Preferably, a positioning ring is fixedly installed on the top of the connecting shaft, and an extension block is fixedly installed on the outer surface of the positioning ring. There are four extension blocks, which are distributed in a circle on the surface of the positioning ring. An adjusting friction piece is fixedly installed on the outer surface of the extension block. There are two groups of adjusting friction pieces, which are symmetrically arranged around the extension block. The staff fixes the outer shell in the base through a limit bending frame, and supports the shell from the inside of the cavity through an extension plate. The staff adjusts the angle of the adjusting friction piece according to the inner diameter of the shell, and then starts the motor so that the output end of the motor drives the connecting shaft to rotate above the protective sleeve. At this time, the connecting shaft drives the extension block and the adjusting friction piece to rotate. At this time, the adjusting friction piece contacts and rubs with the inner wall of the shell, and polishes the burrs in the shell. The debris dropped during polishing slides along the chip guide cover into the base.

[0008] Preferably, the adjusting friction member comprises a mounting block, the mounting block is fixedly mounted on the surface of the extension block, a rotating frame is fixedly mounted on the top of the mounting block, and a damping rod is rotatably mounted on the surface of the rotating frame.

[0009] Preferably, a rotating block is fixedly mounted on the outer surface of the damping rod, an adjusting plate is fixedly mounted on the outer surface of the rotating block, a polishing sheet is fixedly mounted on the surface of the adjusting plate, and the polishing sheet is frictionally fitted with the inner wall of the housing.

[0010] Preferably, a retractable rod is fixedly mounted on the surface of the adjustment plate away from the rotating block, a mounting shaft is rotatably mounted on the surface of the retractable rod, and the mounting shaft is fixedly mounted on the outer surface of the mounting block. When the outer shell is sleeved on the outer side of the extension plate and the guide wheel, the outer shell continuously moves downward as the guide wheel rotates, and covers the outer side of the adjustment plate, and makes the adjustment plate contact the inner wall of the shell. At this time, the damping rod is squeezed and contracted by the inner wall of the shell and the adjustment plate, and when the adjustment plate drives the polishing sheet to contact the inner wall of the shell, the adjustment plate rotates on the surface of the mounting block, and makes the retractable rod rotate and displace on the surface of the mounting shaft as the adjustment plate moves, so that the polishing sheet fits inside the inner wall of the shell, and the polishing sheet polishes the inner wall of the shell when rotating, so as to strengthen the tightness of the fit between the polishing sheet and the inner wall of the shell and improve the polishing efficiency.

[0011] Preferably, the clamping assembly includes a base, which is fixedly mounted on the bottom of the chip guide cover and fixedly connected to the support column. A limiting ring is fixedly mounted on the top edge of the base, and a positioning frame group is fixedly mounted on the outer surface of the limiting ring.

[0012] Preferably, four positioning frame groups are provided, and the four positioning frame groups are symmetrically arranged with the chip guide cover as the center. A clamping block is fixedly installed on the outer surface of the positioning frame group, and limiting bending frames are fixedly installed on both sides of the outer surface of the clamping block.

[0013] Preferably, the limit bending frame is configured as a flexible structure, and a snap-in groove is fixedly installed on the outer surface of the limit bending frame, and a rotating ball is rotatably installed inside the snap-in groove, and the rotating ball is frictionally adapted to the outer wall of the shell. The staff installs the shell in the base, and the shell is sleeved on the outside of the guide assembly. When the shell slides with the guide wheel, the outer wall of the shell and the rotating ball produce friction, and at the same time, the limit bending frame is deformed by the pressure generated when the rotating ball contacts the shell. The rotating ball installed in the limit bending frame through the snap-in groove is displaced by the deformation, so that multiple groups of rotating balls are evenly in contact with the surface of the shell, thereby limiting the shell at multiple angles, so as to position the shell in the base, so as to facilitate the processing of shells of different models.

[0014] Preferably, the guide assembly includes a median axis, which is rotatably mounted inside a positioning ring, and sleeve shafts are sleeved on both ends of the outer surface of the median axis. Connecting plates are fixedly mounted on both sides of the outer surface of the sleeve shaft, and two groups of connecting plates are provided, which are symmetrically arranged with the median axis as the center.

[0015] Preferably, an extension plate is rotatably mounted on the surface of the connecting plate, and a guide wheel is rotatably mounted between the opposite surfaces of the extension plate, and the guide wheel is slidably fitted with the inner wall of the shell. The staff puts the shell cover on top of the sleeve shaft, and the extension plates extending on both sides of the mid-axis contact the inner wall of the shell through the guide wheels. At this time, the extension plate is affected by the inner diameter of the shell and rotates on the surface of the connecting plate to adjust the position of the guide wheel according to the pipe diameter, so that the guide wheel fits the inner wall of the shell. When the shell is installed in the clamping assembly, the shell moves downward and drives the guide wheel to rotate in the extension plate. Multiple groups of guide wheels are supported in the shell cavity by the extension plate, and the shell is guided while limiting the shell from the inside of the cavity to avoid shaking when the shell is polished.

[0016] The present invention provides a shell inner cavity burr polishing device for automobile oxygen sensor processing. It has the following beneficial effects: 1. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor is that when processing the automotive oxygen sensor, there are burrs left by demolding at the edge of the inner wall of the shell during production. The burrs will cause wear to the components in the sensor during the subsequent sensor assembly and use. Therefore, it is necessary to polish the burrs in the inner cavity. At this time, the staff puts the outer shell cover on the top of the guide assembly. At this time, the inner wall of the outer shell placed downwards and the guide assembly produce friction to guide the outer shell to the inside of the clamping assembly, so as to clamp and position the outer shell. Then the staff starts the motor to make the polishing assembly rotate in the inner cavity of the shell, so as to grind and polish the burrs on the inner wall. The debris dropped during polishing slides along the chip guide cover and is collected in the clamping assembly to avoid splashing of debris generated by polishing.

[0017] 2. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor is that the staff fixes the outer shell in the base through a limit bend frame, and supports the shell from the inside of the cavity through an extension plate. The staff adjusts the angle of the friction part according to the inner diameter of the shell, and then starts the motor so that the output end of the motor drives the connecting shaft to rotate above the protective sleeve. At this time, the connecting shaft drives the extension block and the adjusting friction part to rotate. At this time, the adjusting friction part contacts and rubs against the inner wall of the shell, and polishes the burrs in the shell. The debris dropped during polishing slides along the chip guide cover into the base.

[0018] 3. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor is arranged on the outer side of the extension plate and the guide wheel through the outer shell. The outer shell moves down continuously with the rotation of the guide wheel, and is covered on the outer side of the adjustment plate, and the adjustment plate is in contact with the inner wall of the shell. At this time, the damping rod is squeezed and contracted by the inner wall of the shell and the adjustment plate, and the adjustment plate drives the polishing sheet to contact the inner wall of the shell, and the adjustment plate rotates on the surface of the mounting block, and the contraction rod rotates and displaces on the surface of the mounting shaft as the adjustment plate moves, so as to achieve the internal fit of the polishing sheet and the inner wall of the shell. The polishing sheet polishes the inner wall of the shell while rotating to enhance the tightness of the fit between the polishing sheet and the inner wall of the shell and improve the polishing efficiency.

[0019] 4. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor is that the staff installs the outer shell in the base. At this time, the outer shell is sleeved on the outside of the guide assembly. When the shell slides with the guide wheel, the outer wall of the shell and the rotating ball produce friction. At the same time, the limit bend is deformed by the pressure generated when the rotating ball contacts the shell. The rotating ball installed on the limit bend through the clamping groove is displaced by the deformation, so that multiple groups of rotating balls are evenly in contact with the surface of the shell, thereby limiting the shell at multiple angles to position the shell in the base, so as to facilitate the processing of shells of different models.

[0020] 5. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor is that the staff puts the shell cover on the top of the sleeve shaft. At this time, the extension plates at the extensions on both sides of the mid-axis contact the inner wall of the shell through the guide wheels. At this time, the extension plates are affected by the inner diameter of the shell and rotate on the surface of the connecting plate to adjust the position of the guide wheel according to the pipe diameter so that the guide wheel fits the inner wall of the shell. When the shell is installed in the clamping assembly, the shell moves downward and drives the guide wheel to rotate in the extension plate. Multiple sets of guide wheels are supported in the shell cavity by the extension plates, which guide the shell while limiting the shell from the inside of the cavity to avoid shaking during shell polishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a shell inner cavity burr polishing device for processing an automobile oxygen sensor according to the present invention; Figure 2 This is a schematic structural diagram of another angle of a shell inner cavity burr polishing device for processing an automotive oxygen sensor according to the present invention; Figure 3 It is a structural schematic diagram of the cross section of the chip guide cover of the present invention; Figure 4 It is a structural schematic diagram of the guide assembly of the present invention; Figure 5 It is a schematic diagram of the connection structure between the guide assembly and the polishing assembly of the present invention; Figure 6 It is a structural schematic diagram of the polishing assembly of the present invention; Figure 7It is an enlarged structural schematic diagram of the friction adjusting member of the present invention; Figure 8 It is a schematic diagram of the structure of the clamping assembly of the present invention; Fig. 9 It is an enlarged structural schematic diagram of the clamping assembly of the present invention; Fig.10 It is a schematic structural diagram of the clamping assembly of the present invention from another angle.

[0022] In the figure: 1. support column; 2. clamping assembly; 21. positioning frame assembly; 22. limiting ring; 23. base; 24. rotating ball; 25. clamping block; 26. limiting bending frame; 27. clamping groove; 3. chip guide cover; 4. polishing assembly; 41. extension block; 42. protective sleeve; 43. connecting shaft; 44. adjusting friction member; 441. mounting block; 442. rotating frame; 443. damping rod; 444. rotating block; 445. adjusting plate; 446. polishing sheet; 447. retracting rod; 448. mounting shaft; 45. positioning ring; 5. guide assembly; 51. extension plate; 52. center shaft; 53. connecting plate; 54. sleeve shaft; 55. guide wheel; 6. motor. DETAILED DESCRIPTION

[0023] 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 technicians in this field without creative work are within the scope of protection of the present invention.

[0024] The first embodiment, as Figures 1 to 5 As shown, the present invention provides a technical solution: a shell inner cavity burr polishing device for processing an automobile oxygen sensor, comprising a clamping component 2, the outer side of the shell of the clamping component 2 is limited and fixed, a support column 1 is fixedly installed on the bottom of the clamping component 2, and a chip guide cover 3 is fixedly installed on the top of the clamping component 2; A polishing assembly 4, which is used for fitting and polishing the inner cavity of the shell, a motor 6 is fixedly installed at the bottom of the polishing assembly 4, and a guide assembly 5 is rotatably installed at the top of the polishing assembly 4; The chip guide cover 3 is fixedly installed between the tops of the clamping assembly 2, the motor 6 is fixedly installed at the bottom of the clamping assembly 2, and the output end of the motor 6 passes through the clamping assembly 2 and the chip guide cover 3 to extend into the interior thereof, and the polishing assembly 4 is rotatably installed in the interior of the chip guide cover 3; when processing the automotive oxygen sensor, the sensor housing has burrs left by demoulding at the edge of the inner wall of the housing during production, and the burrs will cause wear to the components in the sensor during the subsequent sensor assembly and use. Therefore, it is necessary to polish the burrs in the inner cavity. At this time, the staff puts the outer shell cover above the guide assembly 5. At this time, the inner wall of the outer shell placed downward generates friction with the guide assembly 5 to guide the outer shell to the interior of the clamping assembly 2, thereby clamping and positioning the outer shell, and then the staff starts the motor 6 to make the polishing assembly 4 rotate in the inner cavity of the housing, thereby grinding and polishing the burrs on the inner wall. The debris dropped during polishing slides along the chip guide cover 3 and is collected in the clamping assembly 2 to avoid splashing of debris generated by polishing. Preferably, the guide assembly 5 includes a median axis 52, which is rotatably mounted inside the positioning ring 45, and sleeve shafts 54 are sleeved on both ends of the outer surface of the median axis 52. Connecting plates 53 are fixedly mounted on both sides of the outer surface of the sleeve shaft 54. There are two groups of connecting plates 53, and the two groups of connecting plates 53 are symmetrically arranged with the median axis 52 as the center.

[0025] Preferably, an extension plate 51 is rotatably mounted on the surface of the connecting plate 53, and a guide wheel 55 is rotatably mounted between the opposite surfaces of the extension plate 51, and the guide wheel 55 is slidably adapted to the inner wall of the shell. The staff puts the shell cover on the sleeve shaft 54, and the extension plates 51 extending on both sides of the median axis 52 are in contact with the inner wall of the shell through the guide wheels 55. At this time, the extension plate 51 is affected by the inner diameter of the shell and rotates on the surface of the connecting plate 53 to adjust the position of the guide wheel 55 according to the pipe diameter, so that the guide wheel 55 fits the inner wall of the shell. When the shell is installed in the clamping assembly 2, the shell moves downward and drives the guide wheel 55 to rotate in the extension plate 51. Multiple groups of guide wheels 55 are supported in the shell cavity by the extension plate 51, and the shell is guided and limited from the inside of the cavity to avoid shaking during shell polishing.

[0026] The second embodiment is based on the first embodiment. Figure 6 to Figure 7 As shown, the polishing assembly 4 includes a protective sleeve 42, which is sleeved on the outer surface of the output end of the motor 6, and the protective sleeve 42 is fixedly installed inside the cavity of the chip guide cover 3, and the protective sleeve 42 extends through the clamping assembly 2 to its bottom, and a connecting shaft 43 is rotatably installed on the top of the protective sleeve 42, and the connecting shaft 43 is fixedly connected to the output end of the motor 6.

[0027] Preferably, a positioning ring 45 is fixedly installed on the top of the connecting shaft 43, and an extension block 41 is fixedly installed on the outer surface of the positioning ring 45. Four extension blocks 41 are arranged, and the four extension blocks 41 are distributed in a circumferential shape on the surface of the positioning ring 45. An adjusting friction member 44 is fixedly installed on the outer surface of the extension block 41. Two groups of the adjusting friction members 44 are arranged symmetrically with the extension block 41 as the center. The staff fixes the shell in the base 23 through the limit bending frame 26, and supports the shell from the inside of the cavity through the extension plate 51. The staff adjusts the angle of the adjusting friction member 44 according to the inner diameter of the shell, and then the staff starts the motor 6, so that the output end of the motor 6 drives the connecting shaft 43 to rotate above the protective sleeve 42. At this time, the connecting shaft 43 drives the extension block 41 and the adjusting friction member 44 to rotate. At this time, the adjusting friction member 44 contacts and rubs with the inner wall of the shell, and polishes the burrs in the shell. The debris dropped during polishing slides along the chip guide cover 3 into the base 23.

[0028] Preferably, the adjusting friction member 44 comprises a mounting block 441 , wherein the mounting block 441 is fixedly mounted on the surface of the extension block 41 , a rotating frame 442 is fixedly mounted on the top of the mounting block 441 , and a damping rod 443 is rotatably mounted on the surface of the rotating frame 442 .

[0029] Preferably, a rotating block 444 is fixedly mounted on the outer surface of the damping rod 443, an adjusting plate 445 is fixedly mounted on the outer surface of the rotating block 444, a polishing sheet 446 is fixedly mounted on the surface of the adjusting plate 445, and the polishing sheet 446 is frictionally fitted with the inner wall of the shell.

[0030] Preferably, a retracting rod 447 is fixedly mounted on the surface of the adjusting plate 445 away from the rotating block 444, and a mounting shaft 448 is rotatably mounted on the surface of the retracting rod 447, and the mounting shaft 448 is fixedly mounted on the outer surface of the mounting block 441. When the outer shell is sleeved on the outer side of the extension plate 51 and the guide wheel 55, the outer shell continuously moves downward as the guide wheel 55 rotates, and covers the outer side of the adjusting plate 445, and makes the adjusting plate 445 contact the inner wall of the shell. At this time, the damping rod 443 is squeezed and contracted by the inner wall of the shell and the adjusting plate 445, and when the adjusting plate 445 drives the polishing sheet 446 to contact the inner wall of the shell, the adjusting plate 445 rotates on the surface of the mounting block 441, and the retracting rod 447 rotates and displaces on the surface of the mounting shaft 448 as the adjusting plate 445 moves, so that the polishing sheet 446 fits inside the inner wall of the shell, and the polishing sheet 446 polishes the inner wall of the shell when rotating, so as to strengthen the tightness of the fit between the polishing sheet 446 and the inner wall of the shell, and improve the polishing efficiency.

[0031] The third embodiment is based on the first and second embodiments. Figures 8 to 10As shown, preferably, the clamping assembly 2 includes a base 23, the base 23 is fixedly mounted on the bottom of the chip guide cover 3, and the base 23 is fixedly connected to the support column 1, a limiting ring 22 is fixedly mounted at the top edge of the base 23, and a positioning frame group 21 is fixedly mounted on the outer surface of the limiting ring 22.

[0032] Preferably, four positioning frame groups 21 are provided, and the four positioning frame groups 21 are symmetrically arranged with the chip guide cover 3 as the center. A clamping block 25 is fixedly installed on the outer surface of the positioning frame group 21, and limiting bending frames 26 are fixedly installed on both sides of the outer surface of the clamping block 25.

[0033] Preferably, the limit bending frame 26 is set as a flexible structure, and the outer surface of the limit bending frame 26 is fixedly installed with a clamping groove 27, and the inner part of the clamping groove 27 is rotatably installed with a rotating ball 24, and the rotating ball 24 is frictionally adapted with the outer wall of the shell. The staff installs the shell in the base 23, and the shell is sleeved on the outer side of the guide assembly 5. When the shell slides with the guide wheel 55, the outer wall of the shell and the rotating ball 24 produce friction, and the limit bending frame 26 is deformed by the pressure generated when the rotating ball 24 contacts the shell. The rotating ball 24 installed by the limit bending frame 26 through the clamping groove 27 is displaced by the deformation, so that multiple groups of rotating balls 24 are in uniform contact with the shell surface, thereby limiting the shell at multiple angles, so as to position the shell in the base 23, so as to facilitate the processing of shells of different models.

[0034] During use, when processing the automotive oxygen sensor, burrs left by demolding remain on the edge of the inner wall of the sensor shell during production. The burrs will cause wear to the components in the sensor during the subsequent sensor assembly and use. Therefore, the burrs in the inner cavity need to be polished. At this time, the staff puts the outer shell cover on the top of the guide assembly 5. At this time, the inner wall of the outer shell placed downwards rubs against the guide assembly 5 to guide the outer shell to the inside of the clamping assembly 2, thereby clamping and positioning the outer shell. Then the staff starts the motor 6 to make the polishing assembly 4 rotate in the inner cavity of the shell, thereby grinding and polishing the burrs on the inner wall. The debris dropped during polishing slides along the chip guide cover 3 and is collected in the clamping assembly 2 to avoid splashing of debris generated by polishing.

[0035] The staff installs the shell in the base 23. At this time, the shell is sleeved on the outside of the guide assembly 5. When the shell slides along the guide wheel 55, the outer wall of the shell and the rotating ball 24 generate friction. At the same time, the limiting bend 26 is deformed by the pressure generated when the rotating ball 24 contacts the shell. The rotating ball 24 installed by the limiting bend 26 through the clamping groove 27 is displaced by the deformation, so that multiple groups of rotating balls 24 are evenly in contact with the surface of the shell, thereby limiting the shell at multiple angles to position the shell in the base 23, so as to facilitate the processing of shells of different models.

[0036] The staff places the shell cover above the sleeve shaft 54. At this time, the extension plates 51 extending on both sides of the median axis 52 are in contact with the inner wall of the shell through the guide wheels 55. At this time, the extension plates 51 are affected by the inner diameter of the shell and rotate on the surface of the connecting plate 53 to adjust the position of the guide wheel 55 according to the pipe diameter, so that the guide wheel 55 fits the inner wall of the shell. When the shell is installed in the clamping assembly 2, the shell moves downward and drives the guide wheel 55 to rotate in the extension plate 51. Multiple sets of guide wheels 55 are supported in the shell cavity by the extension plates 51, which guide the shell while limiting the shell from the inside of the cavity to avoid shaking during shell polishing.

[0037] The staff fixes the outer shell in the base 23 through the limit bend frame 26, and supports the shell from the inside of the cavity through the extension plate 51. The staff adjusts the angle of the friction member 44 according to the inner diameter of the shell, and then starts the motor 6, so that the output end of the motor 6 drives the connecting shaft 43 to rotate above the protective sleeve 42. At this time, the connecting shaft 43 drives the extension block 41 and the adjusting friction member 44 to rotate. At this time, the adjusting friction member 44 contacts and rubs against the inner wall of the shell, and polishes the burrs in the shell. The debris dropped during polishing slides along the chip guide cover 3 into the base 23.

[0038] When the outer shell is sleeved on the outer side of the extension plate 51 and the guide wheel 55, the outer shell continuously moves downward as the guide wheel 55 rotates, and is covered on the outer side of the adjustment plate 445, and the adjustment plate 445 is in contact with the inner wall of the shell. At this time, the damping rod 443 is squeezed and contracted by the inner wall of the shell and the adjustment plate 445, and the adjustment plate 445 drives the polishing sheet 446 to contact the inner wall of the shell, and the adjustment plate 445 rotates on the surface of the mounting block 441, and the contraction rod 447 rotates and displaces on the surface of the mounting shaft 448 as the adjustment plate 445 moves, so that the polishing sheet 446 fits inside the inner wall of the shell, and the polishing sheet 446 polishes the inner wall of the shell when rotating to enhance the tightness of the fit between the polishing sheet 446 and the inner wall of the shell, thereby improving the polishing efficiency.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A burr polishing device for the inner cavity of the shell of an automobile oxygen sensor, characterized in that: include: A clamping assembly (2), the outer side of the housing of the clamping assembly (2) being fixed in position, a support column (1) being fixedly mounted on the bottom of the clamping assembly (2), and a chip guide cover (3) being fixedly mounted on the top of the clamping assembly (2); A polishing assembly (4), the polishing assembly (4) being used for fitting and polishing the inner cavity of the shell, a motor (6) being fixedly mounted on the bottom of the polishing assembly (4), and a guide assembly (5) being rotatably mounted on the top of the polishing assembly (4); The chip guide cover (3) is fixedly mounted between the tops of the clamping assembly (2), the motor (6) is fixedly mounted at the bottom of the clamping assembly (2), and the output end of the motor (6) passes through the clamping assembly (2) and the chip guide cover (3) and extends into the interior thereof, and the polishing assembly (4) is rotatably mounted inside the chip guide cover (3); The polishing assembly (4) comprises a protective sleeve (42), the protective sleeve (42) being sleeved on the outer surface of the output end of the motor (6), the protective sleeve (42) being fixedly mounted inside the cavity of the chip guide cover (3), and the protective sleeve (42) passing through the clamping assembly (2) and extending to the bottom thereof, a connecting shaft (43) being rotatably mounted on the top of the protective sleeve (42), and the connecting shaft (43) being fixedly connected to the output end of the motor (6).

2. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 1 is characterized in that: A positioning ring (45) is fixedly mounted on the top of the connecting shaft (43); an extension block (41) is fixedly mounted on the outer surface of the positioning ring (45); four extension blocks (41) are provided, and the four extension blocks (41) are distributed in a circular shape on the surface of the positioning ring (45); an adjusting friction member (44) is fixedly mounted on the outer surface of the extension block (41); two groups of the adjusting friction members (44) are provided, and the two groups of the adjusting friction members (44) are symmetrically arranged with the extension block (41) as the center.

3. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 2 is characterized in that: The adjusting friction member (44) comprises a mounting block (441), wherein the mounting block (441) is fixedly mounted on the surface of the extension block (41), a rotating frame (442) is fixedly mounted on the top of the mounting block (441), and a damping rod (443) is rotatably mounted on the surface of the rotating frame (442).

4. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 3 is characterized in that: A rotating block (444) is fixedly mounted on the outer surface of the damping rod (443), an adjusting plate (445) is fixedly mounted on the outer surface of the rotating block (444), a polishing sheet (446) is fixedly mounted on the surface of the adjusting plate (445), and the polishing sheet (446) is frictionally fitted with the inner wall of the housing.

5. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 4 is characterized in that: A retractable rod (447) is fixedly mounted on the surface of the adjustment plate (445) at a side away from the rotating block (444), a mounting shaft (448) is rotatably mounted on the surface of the retractable rod (447), and the mounting shaft (448) is fixedly mounted on the outer surface of the mounting block (441).

6. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 1 is characterized in that: The clamping assembly (2) comprises a base (23), the base (23) being fixedly mounted on the bottom of the chip guide cover (3), and the base (23) being fixedly connected to the support column (1), a limit ring (22) being fixedly mounted on the top edge of the base (23), and a positioning frame assembly (21) being fixedly mounted on the outer surface of the limit ring (22).

7. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 6 is characterized in that: Four positioning frame groups (21) are provided, and the four positioning frame groups (21) are symmetrically arranged with the chip guide cover (3) as the center. A clamping block (25) is fixedly mounted on the outer surface of the positioning frame group (21), and limiting bending frames (26) are fixedly mounted on both sides of the outer surface of the clamping block (25).

8. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 7 is characterized in that: The limit bending frame (26) is configured as a flexible structure, a clamping groove (27) is fixedly mounted on the outer surface of the limit bending frame (26), a rotating ball (24) is rotatably mounted inside the clamping groove (27), and the rotating ball (24) is frictionally fitted with the outer wall of the housing.

9. The burr polishing equipment for the inner cavity of the shell of an automotive oxygen sensor according to claim 1, characterized in that: The guide assembly (5) comprises a median shaft (52), the median shaft (52) being rotatably mounted inside a positioning ring (45), sleeve shafts (54) being sleeved on both ends of the outer surface of the median shaft (52), connecting plates (53) being fixedly mounted on both sides of the outer surface of the sleeve shaft (54), and two groups of connecting plates (53) being arranged, and the two groups of connecting plates (53) being symmetrically arranged with the median shaft (52) as the center.

10. The burr polishing equipment for the inner cavity of the shell of the automotive oxygen sensor according to claim 9, characterized in that: An extension plate (51) is rotatably mounted on the surface of the connection plate (53), and a guide wheel (55) is rotatably mounted between opposite surfaces of the extension plate (51), wherein the guide wheel (55) is slidably fitted with the inner wall of the housing.

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