Single-arm railway bearing ring grinding machine with automatic measuring mechanism

Abstract

The single-arm railway bearing ring grinding machine with the automatic measuring mechanism is characterized in that a grinding wheel motorized spindle is installed on a grinding wheel supporting plate through a support, a grinding wheel is installed at the end of the grinding wheel motorized spindle, a longitudinal moving sliding table is installed on the left side of the upper portion of a base, a workpiece supporting plate is installed on the longitudinal moving sliding table, and a workpiece is installed on the workpiece supporting plate. A spindle box is installed above the workpiece supporting plate, an electromagnetic centerless clamp is installed on a spindle of the spindle box, a single-arm feeding and discharging device is installed on the right side of the spindle box, a moving part is installed on the front side of the upper side of the workpiece supporting plate, and a measuring mechanism used for measuring the inner diameter of a workpiece is installed on the moving part. According to the grinding machine, the moving part moving left and right is installed on the grinding machine, the measuring mechanism is installed on the moving part, the measuring terminal of the measuring mechanism is always located in the center of the workpiece, in the grinding process of the workpiece, the measuring terminal can measure the workpiece in real time, and the machining efficiency and the grinding precision are improved.

Description

Technical Field

[0001] The invention relates to the technical field of ring grinding, in particular to a single-arm railway bearing ring grinder with an automatic measuring mechanism. Background Art

[0002] After production and processing, the inner wall of the bearing ring needs to be polished to make the roughness and precision of the inner wall meet the required standards. At present, when using a grinder to polish it, it is usually fixed on the workpiece fixture of the grinder, and then the spindle of the grinder drives the workpiece to rotate, and the grinding wheel on the grinder will also extend into the workpiece and contact its inner wall, thereby polishing its inner wall.

[0003] In order to ensure that the accuracy after grinding is within the error range, after grinding to a certain extent, the operator will separate the grinding wheel from the workpiece and make the workpiece still, and then use a caliper to measure its inner wall to ensure that it is within the required error range. For experienced technicians, it may only take one round of processing, but for ordinary people, it may take multiple measurements to ensure the required accuracy, which makes the overall operation more complicated. For this reason, we designed a single-arm railway bearing ring grinder with an automatic measuring mechanism. Summary of the invention

[0004] The single-arm railway bearing ring grinder with an automatic measuring mechanism proposed by the present invention solves the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A single-arm railway bearing ring grinder with an automatic measuring mechanism comprises a base, a lateral movable slide is installed on the right side of the upper end of the base, a grinding wheel support is installed on the slider of the lateral movable slide, a grinding wheel electric spindle is installed on the grinding wheel support through a support, and a grinding wheel is installed on the end head of the grinding wheel electric spindle; A longitudinal movable slide is installed on the left side above the base, a workpiece support plate is installed on the longitudinal movable slide, a spindle box is installed above the workpiece support plate, an electromagnetic centerless clamp is installed on the spindle of the spindle box, a workpiece is fixed on the electromagnetic centerless clamp, a single-arm loading and unloading device is installed on the right side of the spindle box, a waiting position is provided on the single-arm loading and unloading device, a loading and unloading track for loading is installed on the front side of the spindle box, a single-point dresser for dressing the grinding wheel is installed on the rear side above the workpiece support plate, a moving part is installed on the front side of the upper side of the workpiece support plate, and a measuring mechanism for measuring the inner diameter of the workpiece is installed on the moving part.

[0006] Preferably, the movable part includes a translation slide fixed on the workpiece support plate, a support frame is slidably mounted on the translation slide, and the measuring mechanism is mounted on the support frame. The translation slide can enable the measuring mechanism to move back and forth left and right, so that the measuring terminal of the measuring mechanism can extend into the interior of the workpiece, thereby enabling real-time measurement of the inner wall of the workpiece.

[0007] Preferably, the measuring mechanism comprises an extension plate mounted on a support frame, a measuring cylinder is mounted on the support frame, two measuring terminals are installed in a lifting manner on the left side of the extension plate and the support frame, and the two measuring terminals are symmetrically distributed, an expansion piece is connected between the two measuring terminals, and the expansion piece is connected to the push rod of the measuring cylinder; A cleaning member and a pressing member are installed on the left rear side of the extension plate. The cleaning member is connected to the push rod of the measuring cylinder through the pressing member, and a cleaning member is also arranged on the cleaning member.

[0008] Preferably, the measuring terminal comprises an expansion frame slidably arranged up and down, a measuring roller is rotatably installed at the rear of one end of the expansion frame away from the support frame through an axle pin, two guide sleeves are fixed on the expansion frame toward the side of the support frame, two vertical rods are fixed on the rear side of the support frame through a bracket, the expansion frame is slidably connected to the vertical rod through the guide sleeve, one of the vertical rods is sleeved with a fixed sleeve, the fixed sleeve is fixed to the support frame, two expansion springs are sleeved on the vertical rod, one end of the expansion spring is connected to the fixed sleeve, and the other ends of the two expansion springs are respectively abutted against two corresponding guide sleeves above and below; The expansion spring is in a compressed state, and the expansion spring applies elastic force to the guide sleeve; The axes of the upper and lower measuring rollers are coplanar with the axis of the electromagnetic centerless clamp, that is, the measuring rollers are in the middle of the electromagnetic centerless clamp. Before measurement, that is, when the measuring rollers are not in contact with the inner wall of the workpiece, the two expansion frames are close to each other and the expansion springs are in a compressed state, which makes the upper and lower expansion frames tend to open outward.

[0009] Preferably, the extension plate is provided with two groups of symmetrically distributed sliding holes, the expansion member includes two groups of symmetrically distributed lower pressing blocks, the two lower pressing blocks are respectively fixed on the inner sides of the two expansion frames, the lower pressing blocks are provided with horizontal grooves, the end of the horizontal groove close to the measuring roller is provided with a pressing inclined surface, a connecting sleeve is fixed on the push rod of the measuring cylinder, two pressing rods are fixed on the connecting sleeve, the two pressing rods slide through the two sliding holes respectively, and the pressing rods slide and extend into the horizontal grooves, when the push rod of the measuring cylinder is extended and causes the pressing rod to move backward, the pressing rod will be away from the horizontal groove and on the pressing inclined surface, and when moving in the horizontal groove, the two expansion frames will not expand away from each other; When the pressing rod continues to move on the pressing inclined surface, the opening of the pressing inclined surface gradually increases, and the two pressing blocks will move in opposite directions under the action of the expansion spring, so that the two measuring rollers and the expansion frame move away from each other, and the measuring rollers can always keep in contact with the inner wall of the workpiece.

[0010] Preferably, the extension plate is provided with two vertically distributed sliding holes three and one transversely distributed sliding hole two, the cleaning member comprises two measuring slide blocks slidably mounted at the upper and lower ends of the extension plate, the measuring slide blocks extend into the sliding hole three, a protective cover is fixed to each of the two measuring slide blocks, the two protective covers are symmetrically arranged, the protective covers are in an arc-shaped structure, the measuring roller is placed in the protective cover, and there is a scraper plate above both ends of the protective cover, the scraper plate has an arc-shaped cross-section, and is thickened, the curvature of the scraper plate is the same as the curvature of the workpiece, the scraper plate is made of soft rubber, which has a certain elasticity, and when the protective cover is close to the inner wall of the workpiece, the scraper plate can fit tightly against the inner wall of the workpiece, and no gap will be left between the two.

[0011] Preferably, the pressure member comprises a translation rod installed transversely on the rear side of the extension plate through a bracket, a translation block is slidably sleeved on the translation rod, a deflection rod is rotatably installed on the upper and lower sides of the translation block through an axle pin, the other end of the deflection rod is rotatably connected to the measuring slider through an axle pin, a pressure spring is sleeved on the deflection rod, the two ends of the pressure spring are respectively abutted against the front bracket and the front surface of the translation block, a pressing member is installed on the push rod of the measuring cylinder, and the pressing member passes through the second sliding hole and is sleeved on the translation rod; The clamping piece moves left and right with the push rod of the measuring cylinder. When the lower pressure rod is in the horizontal groove and moves backward, the clamping piece moves backward, and the upper and lower protective covers gradually approach the workpiece. When the lower pressure rod is on the lower pressure inclined surface, the clamping piece is completely away from the translation block, and the protective cover is squeezed into contact with the workpiece by the compression spring.

[0012] Preferably, the cleaning member includes four mounting shafts rotatably mounted on the extension plate through bearings, a roller brush is fixed on each of the mounting shafts, the four roller brushes are respectively placed on the front and rear ends of the outside of the two protective covers, the right end of the mounting shaft passes through the extension plate and is placed on its right side, and a driving gear is fixed to the right end of the mounting shaft, two driving plates are provided on the right side surface of the extension plate for sliding up and down, the two driving plates are respectively fixed to two measuring sliders, meshing teeth are provided on the front and rear sides of the driving plate, the driving plate meshes with the driving gear through the meshing teeth, and a longer soft brush is provided on the surface of the roller brush, which can be deformed and contact the surface of the protective cover and the scraper plate.

[0013] Preferably, an induction switch touch indicator light is installed on the rear surface of the support frame, and the induction switch touch indicator light is electrically connected to the grinding wheel electric spindle. A pressing head is arranged on the upper expansion frame, and the pressing head is directly below the induction switch touch indicator light. When the inner wall of the workpiece is polished, the pressing head contacts the induction switch touch indicator light, which means that the inner wall of the workpiece is polished and meets the requirements, and the grinding wheel stops rotating for polishing. A vertically distributed grating scale is installed on the left surface of the support frame. Two reading heads are installed on the grating scale for up and down sliding. The two reading heads are respectively connected to two expansion frames, and the two reading heads are connected to an external display device. When the two expansion frames are moving, their sizes can be detected by the reading heads, thereby facilitating real-time monitoring of the specific grinding size of the inner wall of the workpiece and improving the grinding accuracy.

[0014] Beneficial effects of the present invention: 1. A moving part that moves left and right is installed on the grinding machine. A measuring mechanism is installed on the moving part. The measuring terminal of the measuring mechanism is always at the center of the workpiece. During the grinding process, the measuring terminal can measure the workpiece in real time. Multiple manual measurements are not required during the grinding process, which improves the processing efficiency and grinding accuracy. 2. By setting a cleaning piece on the measuring roller of the measuring terminal, the protective cover and scraper plate in the cleaning piece can always be in contact with the inner wall of the workpiece during the measurement process, so as to clean the dust generated during the grinding process, avoid the dust adhering to the surface of the measuring roller during measurement, which will increase its thickness and improve the measurement accuracy; 3. By arranging cleaning parts on the front and rear sides of the cleaning part, when the cleaning part is extended and moved away from the workpiece, the roller brush in the cleaning part rotates, and the roller brush can clean the dust attached to the surface of the scraper plate during the rotation process, so as to ensure that the dust generated by the grinding of the previous workpiece will not accumulate on the scraper plate, so that when grinding a new workpiece, the residual dust can be prevented from sticking to the inner wall of the new workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a front and cross-sectional view of a single-arm railway bearing ring grinder with an automatic measuring mechanism proposed by the present invention; Figure 2 for Figure 1 Schematic diagram of the middle support frame and the measuring mechanism; Figure 3 It is a schematic diagram of the position distribution of the measuring mechanism, the workpiece and the grinding wheel; Figure 4 for Figure 2 Schematic diagram of the structure of the measuring mechanism.

[0016] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle; Figure 6 It is a schematic diagram of the structure of the measuring terminal, the cleaning member and the sweeping member in the measuring mechanism; Figure 7 for Figure 2 Schematic diagram of the structure of the middle extension plate, cleaning parts and sweeping parts; Figure 8 for Figure 6 Schematic diagram of the structure of the cleaning parts and sweeping parts.

[0017] Numbers in the figure: 1, base; 2, grinding wheel electric spindle; 21, horizontal moving slide; 22, grinding wheel; 3, single point dresser; 4, spindle box; 41, longitudinal moving slide; 42, electromagnetic centerless clamp; 43, workpiece; 5, loading and unloading track; 6, single arm loading and unloading device; 61, waiting position; 7, moving part; 71, translation slide; 72, support frame; 8, measuring mechanism; 81, measuring cylinder; 82, extension plate; 821, slide hole 1; 822, slide hole 2; 823, slide hole 3; 83, measuring terminal; 831, expansion frame; 832, Measuring roller; 833, vertical rod; 834, expansion spring; 835, guide sleeve; 836, fixed sleeve; 84, cleaning part; 841, protective cover; 842, scraper plate; 843, measuring slide; 844, driving plate; 85, cleaning part; 851, roller brush; 852, mounting shaft; 853, driving gear; 86, pressing part; 861, deflection rod; 862, translation block; 863, pressing spring; 864, translation rod; 865, pressing part; 87, expansion part; 871, pressing block; 872, horizontal groove; 873, pressing inclined surface; 874, connecting sleeve; 875, pressing rod; 88, grating ruler; 881, reading head; 89, induction switch touch indicator light; 891, pressing head. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figure 1 - Figure 8 A single-arm railway bearing ring grinder with an automatic measuring mechanism comprises a base 1, a transverse movable slide 21 for left and right movement is installed on the right side of the upper end of the base 1, a grinding wheel support plate is installed on the slider of the transverse movable slide 21, a grinding wheel electric spindle 2 is installed on the grinding wheel support plate through a support, and a grinding wheel 22 is installed on the end of the grinding wheel electric spindle 2; A longitudinal movable slide 41 for moving forward and backward is installed on the left side above the base 1, a workpiece pallet is installed on the longitudinal movable slide 41, a spindle box 4 is installed above the workpiece pallet, an electromagnetic centerless clamp 42 is installed on the spindle of the spindle box 4, a workpiece 43 is fixed on the electromagnetic centerless clamp 42, a single-arm loading and unloading device 6 is installed on the right side of the spindle box 4, a waiting position 61 is set on the single-arm loading and unloading device 6, a loading and unloading track 5 for loading is installed on the front side of the spindle box 4, a single-point dresser 3 for dressing the grinding wheel 22 is installed on the rear side above the workpiece pallet, a moving part 7 is installed on the front side of the upper side of the workpiece pallet, and a measuring mechanism 8 for measuring the inner diameter of the workpiece 43 is installed on the moving part 7.

[0020] The movable part 7 includes a translation slide 71 fixed on the workpiece support plate, a support frame 72 is slidably mounted on the translation slide 71, and the measuring mechanism 8 is mounted on the support frame 72. The translation slide 71 can enable the measuring mechanism 8 to move back and forth left and right, so that the measuring terminal 83 of the measuring mechanism 8 can extend into the interior of the workpiece 43, so that the inner wall of the workpiece 43 can be measured in real time.

[0021] Please refer to Figure 2 , Figure 3 The measuring mechanism 8 includes an extension plate 82 mounted on the support frame 72, a measuring cylinder 81 is mounted on the support frame 72, two measuring terminals 83 are installed in a lifting manner on the left side of the extension plate 82 and the support frame 72, and the two measuring terminals 83 are symmetrically distributed, an expansion piece 87 is connected between the two measuring terminals 83, and the expansion piece 87 is connected to the push rod of the measuring cylinder 81; A cleaning member 84 and a pressing member 86 are installed on the left rear side of the extension plate 82 . The cleaning member 84 is connected to the push rod of the measuring cylinder 81 via the pressing member 86 . A cleaning member 85 is also provided on the cleaning member 84 .

[0022] Please refer to Figure 2 The measuring terminal 83 includes an expansion frame 831 that is slidably arranged up and down. A measuring roller 832 is rotatably installed at the rear of the expansion frame 831 away from the support frame 72 through an axle pin. Two guide sleeves 835 are fixed to the expansion frame 831 on the side facing the support frame 72. Two vertical rods 833 are fixed to the rear side of the support frame 72 through a bracket. The expansion frame 831 is slidably connected to the vertical rod 833 through the guide sleeves 835. A fixing sleeve 836 is sleeved on one of the vertical rods 833. The fixing sleeve 836 is fixed to the support frame 72. Two expansion springs 834 are sleeved on the vertical rod 833. One end of the expansion spring 834 is connected to the fixing sleeve 836, and the other ends of the two expansion springs 834 are respectively abutted against two corresponding guide sleeves 835 above and below. The expansion spring 834 is in a compressed state, and the expansion spring 834 applies elastic force to the guide sleeve 835; The axes of the upper and lower measuring rollers 832 are coplanar with the axis of the electromagnetic centerless clamp 42, that is, the measuring roller 832 is in the middle of the electromagnetic centerless clamp 42. Before measurement, that is, when the measuring roller 832 is not in contact with the inner wall of the workpiece 43, the two expansion frames 831 are close to each other, and the expansion spring 834 is in a compressed state, which makes the upper and lower expansion frames 831 tend to open outward.

[0023] Please refer to Figure 3 - Figure 7 The extension plate 82 is provided with two sets of symmetrically distributed sliding holes 821, and the expansion member 87 includes two sets of symmetrically distributed lower pressing blocks 871, the two lower pressing blocks 871 are respectively fixed on the inner sides of the two expansion frames 831, and the lower pressing blocks 871 are provided with horizontal grooves 872, and the end of the horizontal groove 872 close to the measuring roller 832 is provided with a pressing inclined surface 873, and a connecting sleeve 874 is fixed on the push rod of the measuring cylinder 81, and two pressing rods 875 are fixed on the connecting sleeve 874, and the two pressing rods 875 slide through the two sliding holes 821 respectively, and the pressing rods 875 slide and extend into the horizontal grooves 872; When the push rod of the measuring cylinder 81 is extended and the pressing rod 875 moves backward, the pressing rod 875 will be away from the horizontal groove 872 and on the pressing inclined surface 873, and when moving in the horizontal groove 872, the two expansion frames 831 will not expand away from each other; When the pressing rod 875 continues to move on the pressing slope 873, due to the gradual increase in the opening of the pressing slope 873, the two pressing blocks 871 will move in opposite directions under the action of the expansion spring 834, thereby causing the two measuring rollers 832 and the expansion frame 831 to move away from each other, and the measuring roller 832 can always maintain contact with the inner wall of the workpiece 43.

[0024] Please refer to Figure 3 - Figure 8 The extension plate 82 is provided with two vertically distributed sliding holes 3 823 and a horizontally distributed sliding hole 2 822. The cleaning member 84 includes two measuring sliders 843 slidably mounted on the upper and lower ends of the extension plate 82. The measuring sliders 843 extend into the sliding hole 3 823. A protective cover 841 is fixed to each of the two measuring sliders 843. The two protective covers 841 are symmetrically arranged. The protective covers 841 are in an arc-shaped structure. The measuring roller 832 is placed in the protective cover 841. A scraper plate 842 is provided above each end of the protective cover 841. The scraper plate 842 has an arc-shaped cross-section and a thickened design. The curvature of the scraper plate 842 is the same as that of the workpiece 43. The scraper plate 842 is made of soft rubber and has a certain elasticity. When the protective cover 841 is close to the inner wall of the workpiece 43, the scraper plate 842 can fit tightly against the inner wall of the workpiece 43 without leaving a gap therebetween, thereby ensuring that the dust on the inner wall of the workpiece 43 is scraped off and that it does not contact the measuring roller 832, thereby preventing the surface of the measuring roller 832 from being stained with dust and preventing the thickness of the measuring roller 832 from increasing due to dust adhering to the surface of the measuring roller 832 during measurement, thereby improving the measurement accuracy.

[0025] The pressure member 86 includes a translation rod 864 installed laterally on the rear side of the extension plate 82 through a bracket, a translation block 862 is slidably sleeved on the translation rod 864, a deflection rod 861 is rotatably installed on the upper and lower sides of the translation block 862 through an axle pin, the other end of the deflection rod 861 is rotatably connected to the measuring slider 843 through an axle pin, a pressure spring 863 is sleeved on the deflection rod 861, and the two ends of the pressure spring 863 are respectively in contact with the front bracket and the front surface of the translation block 862, and a pressing member 865 is installed on the push rod of the measuring cylinder 81, and the pressing member 865 passes through the second slide hole 822 and is sleeved on the translation rod 864; The clamping piece 865 moves left and right together with the push rod of the measuring cylinder 81. When the lower pressure rod 875 is in the horizontal groove 872 and moves backward, the clamping piece 865 moves backward, and the upper and lower protective covers 841 gradually approach the workpiece 43. When the lower pressure rod 875 is on the lower pressure slope 873, the clamping piece 865 is completely away from the translation block 862, and the protective cover 841 is squeezed by the compression spring 863 to contact the workpiece 43.

[0026] The cleaning member 85 includes four mounting shafts 852 rotatably mounted on the extension plate 82 through bearings, and a roller brush 851 is fixed on each mounting shaft 852. The four roller brushes 851 are respectively placed on the front and rear ends of the exterior of the two protective covers 841. The right end of the mounting shaft 852 passes through the extension plate 82 and is placed on the right side thereof, and a driving gear 853 is fixed on the right end of the mounting shaft 852. Two driving plates 844 are slidably arranged on the right side surface of the extension plate 82, and the two driving plates 844 are respectively fixed to the two measuring slide blocks 843. Meshing teeth are arranged on the front and rear sides of the driving plate 844, and the driving plate 844 is meshed with the driving gear 853 through the meshing teeth. A relatively long soft brush is arranged on the surface of the roller brush 851, which can be deformed and contact the surfaces of the protective cover 841 and the scraper plate 842. When the protective cover 841 moves up and down, the driving gear 853 can be rotated through the driving plate 844, thereby enabling the roller brush 851 to rotate. During the rotation, the roller brush 851 can clean the dust attached to the surface of the scraper plate 842, thereby ensuring that the dust generated by the grinding of the previous workpiece 43 will not gather at the edge of the scraper plate 842, so that when the new workpiece 43 is ground, the residual dust can be prevented from sticking to the inner wall of the new workpiece 43.

[0027] Please refer to Figure 4 , Figure 5 , an induction switch touch indicator light 89 is installed on the rear surface of the support frame 72, and a pressing head 891 is arranged on the upper expansion frame 831, and the pressing head 891 is directly below the induction switch touch indicator light 89. When the pressing head 891 contacts the induction switch touch indicator light 89, it means that the inner wall of the workpiece 43 is polished and meets the requirements, and the grinding wheel 22 can stop rotating for grinding. When the grinding wheel 22 stops rotating for grinding and the induction switch touch indicator light 89 does not light up to send a signal, the inner wall of the workpiece 43 is still not polished and needs to be further polished. The setting of the induction switch touch indicator light 89 and the pressing head 891 can remind the processing personnel of the specific processing and grinding conditions of the workpiece 43, thereby ensuring the grinding accuracy of the inner wall of the workpiece 43; A vertically distributed grating scale 88 is installed on the left surface of the support frame 72. Two reading heads 881 are installed on the grating scale 88 for sliding up and down. The two reading heads 881 are respectively connected to two expansion frames 831. The two reading heads 881 are connected to an external display device. When the two expansion frames 831 are moving, their sizes can be detected by the reading heads 881, thereby facilitating real-time monitoring of the specific grinding dimensions of the inner wall of the workpiece 43 and improving the grinding accuracy.

[0028] Working principle: Before grinding, the grinding wheel electric spindle 2 is started and preheated for 5 to 10 minutes. During grinding, the blank is first placed in the waiting position 61. After the sensor senses the material signal, the upper single-arm loading and unloading device 6 starts to swing and sends the blank workpiece 43 to the center position of the electromagnetic centerless clamp 42. The electromagnetic centerless clamp 42 magnetically attracts the workpiece 43. Then the spindle in the spindle box 4 starts and drives the workpiece 43 to rotate. The translation slide 71 makes the measuring mechanism 8 move to the left, and the measuring terminal 83, cleaning member 84 and cleaning member 85 in the measuring mechanism 8 extend into the workpiece 43 (such as Figure 3 shown); Then, the push rod of the measuring cylinder 81 extends and drives the pressing rod 875 and the clamping member 865 to move backward. When the push rod of the measuring cylinder 81 extends and causes the pressing rod 875 to move backward, the pressing rod 875 will gradually move away from the horizontal slot 872 and toward the pressing inclined surface 873. When moving in the horizontal slot 872, the two expansion frames 831 will not expand away from each other. At this time, the clamping member 865 moves backward, and the upper and lower protective covers 841 gradually approach the workpiece 43. When the pressing rod 875 is on the pressing inclined surface 873, the clamping member 865 is completely away from the translation block 862, and the scraper plate 842 on the protective cover 841 contacts the inner wall of the workpiece 43. After that, the push rod of the measuring cylinder 81 continues to extend, and makes the pressing rod 875 completely disengage from the pressing slope 873 (the maximum distance that the measuring roller 832 moves will not exceed the depth of the pressing slope 873, so as to ensure that the pressing rod 875 can return to the pressing slope 873). When the pressing rod 875 continues to move on the horizontal slope 873, due to the gradual increase in the opening of the pressing slope 873, the two pressing blocks 871 will move in opposite directions under the action of the expansion spring 834, thereby making the two measuring rollers 832 and the expansion frame 831 move away from each other, and the measuring roller 832 will contact the inner wall of the workpiece 43, and the measuring roller 832 has a tendency to continue to expand outward under the action of the expansion spring 834. At this time, the initial measurement of the measuring terminal 83 can be completed.

[0029] Then the lateral movable slide 21 moves to the left and drives the grinding wheel 22 to enter the inner hole of the workpiece 43, and completes the grinding of the workpiece 43 according to the process requirements. During the grinding process, as the inner diameter of the workpiece 43 gradually increases, the scraper plate 842 and the measuring roller 832 will also expand outward under the action of the expansion spring 834 and the pressure spring 863, thereby ensuring that the scraper plate 842 and the measuring roller 832 are always in contact with the inner wall of the workpiece 43. When the grinding of the inner wall of the workpiece 43 is completed, the pressing head 891 contacts the touch indicator light 89 of the induction switch, which means that the grinding of the inner wall of the workpiece 43 is completed and meets the requirements, and the grinding wheel 22 stops rotating for grinding; Finally, the grinding wheel 22 withdraws from the inner hole of the workpiece 43, the push rod of the measuring cylinder 81 contracts, the lower pressure rod 875 and the clamping piece 865 move forward, the upper and lower measuring rollers 832 and the scraper plate 842 approach each other and move away from the inner wall of the workpiece 43, and in the process of the scraper plate 842 moving inward, the driving plate 844 moves downward to rotate the driving gear 853, and then the roller brush 851 can rotate. During the rotation, the roller brush 851 can clean the dust attached to the surface of the scraper plate 842, which can ensure that the dust generated by the grinding of the previous workpiece 43 will not gather on the scraper plate 842, so that when the new workpiece 43 is ground, the residual dust is prevented from sticking to the inner wall of the new workpiece 43.

[0030] Finally, the slide 71 is translated to make the measuring mechanism 8 move rightward and exit the inner hole of the workpiece 43, the spindle stops, the electromagnetic centerless fixture 42 is reversely demagnetized, the finished part is unloaded, and then the cyclic loading and grinding begins.

[0031] By installing a moving member 7 that moves left and right on the grinding machine, a measuring mechanism 8 is installed on the moving member 7, and the measuring terminal 83 of the measuring mechanism 8 is always at the center of the workpiece 43. During the grinding process of the workpiece 43, the measuring terminal 83 can measure the workpiece 43 in real time, and multiple manual measurements are not required during the grinding process, thereby improving the processing efficiency and grinding accuracy. By arranging a cleaning member 84 on the measuring roller 832 of the measuring terminal 83, the protective cover 841 and the scraper plate 842 in the cleaning member 84 can always be in contact with the inner wall of the workpiece 43 during the measuring process, so that the dust generated during the grinding process can be cleaned, and the thickness of the measuring roller 832 is prevented from increasing due to the dust adhering to the surface of the measuring roller 832 during the measurement, thereby improving the measurement accuracy; By arranging the cleaning piece 85 on the front and rear sides of the cleaning piece 84, when the cleaning piece 84 is extended and away from the workpiece 43, the roller brush 851 in the cleaning piece 85 rotates, and the roller brush 851 can clean the dust attached to the surface of the scraper plate 842 during the rotation process, thereby ensuring that the dust generated by the grinding of the previous workpiece 43 will not gather at the upper edge of the scraper plate 842, so that when the new workpiece 43 is ground, the residual dust is prevented from sticking to the inner wall of the new workpiece 43.

[0032] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A single-arm railway bearing ring grinder with an automatic measuring mechanism, characterized in that: The invention comprises a base (1), a transverse movable slide (21) movable leftward and rightward is installed on the right side of the upper end of the base (1), a grinding wheel support plate is installed on the slider of the transverse movable slide (21), a grinding wheel electric spindle (2) is installed on the grinding wheel support plate via a support, and a grinding wheel (22) is installed on the end of the grinding wheel electric spindle (2); A longitudinal movable slide (41) that moves forward and backward is installed on the left side above the base (1), a workpiece support plate is installed on the longitudinal movable slide (41), a spindle box (4) is installed above the workpiece support plate, an electromagnetic centerless clamp (42) is installed on the spindle of the spindle box (4), a workpiece (43) is fixed on the electromagnetic centerless clamp (42), a single-arm loading and unloading device (6) is installed on the right side of the spindle box (4), a waiting position (61) is set on the single-arm loading and unloading device (6), a loading and unloading track (5) for loading is installed on the front side of the spindle box (4), a single-point dresser (3) for dressing the grinding wheel (22) is installed on the rear side above the workpiece support plate, a moving part (7) is installed on the front side of the upper side of the workpiece support plate, and a measuring mechanism (8) for measuring the inner diameter of the workpiece (43) is installed on the moving part (7).

2. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 1, characterized in that: The moving member (7) comprises a translation slide (71) fixed on a workpiece support plate, a support frame (72) is slidably mounted on the translation slide (71) leftward and rightward, and the measuring mechanism (8) is mounted on the support frame (72).

3. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 2, characterized in that: The measuring mechanism (8) comprises an extension plate (82) mounted on a support frame (72), a measuring cylinder (81) being mounted on the support frame (72), two measuring terminals (83) being mounted in a lifting manner on the left side of the extension plate (82) and the support frame (72), and the two measuring terminals (83) being symmetrically distributed, an expansion piece (87) being connected between the two measuring terminals (83), and the expansion piece (87) being connected to a push rod of the measuring cylinder (81); A cleaning member (84) and a pressing member (86) are installed on the left rear side of the extension plate (82); the cleaning member (84) is connected to the push rod of the measuring cylinder (81) via the pressing member (86); and a cleaning member (85) is also provided on the cleaning member (84).

4. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 3, characterized in that: The measuring terminal (83) comprises an expansion frame (831) which is slidably arranged up and down, a measuring roller (832) being rotatably mounted on the rear of one end of the expansion frame (831) away from the support frame (72) via an axle pin, two guide sleeves (835) being fixed on the side of the expansion frame (831) facing the support frame (72), two vertical rods (833) being fixed on the rear side of the support frame (72) via a bracket, the expansion frame (831) being slidably connected to the vertical rods (833) via the guide sleeves (835), one of the vertical rods (833) being sleeved with a fixing sleeve (836), the fixing sleeve (836) being fixed to the support frame (72), two expansion springs (834) being sleeved on the vertical rod (833), one end of the expansion spring (834) being connected to the fixing sleeve (836), and the other ends of the two expansion springs (834) being respectively in contact with two corresponding guide sleeves (835) at the top and the bottom; The expansion spring (834) is in a compressed state, and the expansion spring (834) applies elastic force to the guide sleeve (835).

5. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 4, characterized in that: The extension plate (82) is provided with two groups of symmetrically distributed sliding holes (821), the expansion member (87) comprises two groups of symmetrically distributed lower pressing blocks (871), the two lower pressing blocks (871) are respectively fixed on the inner sides of the two expansion frames (831), the lower pressing blocks (871) are provided with a horizontal groove (872), and the end of the horizontal groove (872) close to the measuring roller (832) is provided with a pressing inclined surface (873), the push rod of the measuring cylinder (81) is fixed with a connecting sleeve (874), and two pressing rods (875) are fixed on the connecting sleeve (874), the two pressing rods (875) respectively slide through the two sliding holes (821), and the pressing rods (875) slide and extend into the horizontal groove (872).

6. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 3, characterized in that: The extension plate (82) is provided with two vertically distributed sliding holes three (823) and one horizontally distributed sliding hole two (822); the cleaning member (84) comprises two measuring sliders (843) slidably mounted at the upper and lower ends of the extension plate (82); the measuring sliders (843) extend into the sliding hole three (823); a protective cover (841) is fixed to each of the two measuring sliders (843); the two protective covers (841) are symmetrically arranged; the protective covers (841) are in an arc-shaped structure; the measuring roller (832) is disposed in the protective cover (841), and a scraping plate (842) is disposed above each of the two ends of the protective cover (841).

7. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 6, characterized in that: The pressure member (86) comprises a translation rod (864) which is transversely mounted on the rear side of the extension plate (82) via a bracket, a translation block (862) being slidably sleeved on the translation rod (864), a deflection rod (861) being rotatably mounted on the upper and lower sides of the translation block (862) via an axle pin, the other end of the deflection rod (861) being rotatably connected to a measuring slider (843) via an axle pin, a pressure spring (863) being sleeved on the deflection rod (861), the two ends of the pressure spring (863) being respectively in contact with the front bracket and the front surface of the translation block (862), a pressing member (865) being mounted on the push rod of the measuring cylinder (81), the pressing member (865) passing through the second sliding hole (822) and being sleeved on the translation rod (864).

8. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 7, characterized in that: The cleaning member (85) comprises four mounting shafts (852) rotatably mounted on the extension plate (82) via bearings, a roller brush (851) being fixed to each mounting shaft (852), the four roller brushes (851) being respectively disposed at the front and rear ends of the exterior of the two protective covers (841), the right end of the mounting shaft (852) passing through the extension plate (82) and being disposed on the right side thereof, and a driving gear (853) being fixed to the right end of the mounting shaft (852), two driving plates (844) being slidably disposed up and down on the right side surface of the extension plate (82), the two driving plates (844) being respectively fixed to the two measuring slide blocks (843), the front and rear sides of the driving plate (844) being both provided with meshing teeth, the driving plate (844) being meshed with the driving gear (853) via the meshing teeth.

9. A single-arm railway bearing ring grinder with an automatic measuring mechanism according to claim 4, characterized in that: An induction switch touch indicator light (89) is installed on the rear surface of the support frame (72), and the induction switch touch indicator light (89) is electrically connected to the grinding wheel electric spindle (2). A pressing head (891) is arranged on the upper expansion frame (831), and the pressing head (891) is located directly below the induction switch touch indicator light (89); A vertically distributed grating ruler (88) is installed on the left surface of the support frame (72), and two reading heads (881) are installed on the grating ruler (88) for sliding up and down. The two reading heads (881) are respectively connected to two expansion frames (831), and the two reading heads (881) are connected to an external display device.

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