Cylindrical workpiece end face grinding tool

Abstract

A cylindrical workpiece end face grinding tool belongs to the technical field of grinding equipment and comprises an operation table, a clamping part is arranged on the left side of the upper surface of the operation table, a shaft body cylindrical workpiece is clamped and positioned by the clamping part, and a supporting unit used for supporting the shaft body cylindrical workpiece is arranged on the operation table. The shaft body cylindrical workpiece can be supported in an auxiliary mode, stable positioning of the shaft body cylindrical workpiece is achieved in cooperation with a three-jaw chuck, the problem that the shaft body cylindrical workpiece is prone to deflection in the polishing machining process in a single-side positioning mode is solved, the stability of the shaft body cylindrical workpiece in the polishing machining process is effectively guaranteed, and the machining precision of the shaft body cylindrical workpiece is improved. Therefore, the qualified rate of finished products for grinding the end faces of the shaft body cylindrical workpieces is guaranteed, the supporting and positioning requirements of the shaft body cylindrical workpieces with different thicknesses or stepped shaft body cylindrical workpieces can be flexibly met, the flexibility is higher, and the universality of the equipment is higher.

Description

TECHNICAL FIELD

[0001] The utility model belongs to grinding equipment technical field, concretely relates to a cylindrical workpiece end face grinding frock. BACKGROUND

[0002] Cylindrical workpieces play an important role in daily life and production, such as various cylindrical shafts, which are commonly used for transmission and connection between parts. Cylindrical workpieces need to be ground before use to ensure smooth and flat end.

[0003] Related technology (announcement number CN213195690U) discloses a kind of adjustable center three-jaw chuck, including the transition disc of setting in tail vertebra head end, transition disc is connected with three-jaw chuck for clamping long shaft class special-shaped part by connecting disc, three-jaw chuck and connecting disc coaxially arranged, connecting disc is equipped with a plurality of first through holes, transition disc is equipped with a plurality of second through holes corresponding to first through hole, and first through hole and second through hole are inserted with bolt, bolt is sequentially connected with nut by the head end of first through hole and second through hole, the diameter of first through hole and second through hole is greater than the diameter of bolt;The device realizes the machining of complex long shaft class special-shaped part to grinder, not only solves the problem of grinding the outer circle of this kind of part, but also has universality, only needs to adjust connecting disc to ensure that the axis of long shaft class special-shaped part to be ground and the spindle of grinding machine are coaxial, and the outer circle to be ground is corrected, so that the device can be used for outer circle grinding.

[0004] When cylindrical workpieces are ground, the stability of the cylindrical workpieces determines the final quality of the workpiece grinding. When the end of a long shaft cylindrical workpiece is ground, the traditional three-jaw chuck is used to clamp and fix one end of the shaft cylindrical workpiece, and the other end of the shaft cylindrical workpiece is polished by polishing equipment. The above-mentioned method is easy to cause the deflection of the shaft cylindrical workpiece during polishing, which affects the stability during polishing process, and further causes the defects of excessive polishing of the end surface of the shaft cylindrical workpiece, which affects the qualified rate of polishing finished products. Utility model content

[0005] The utility model provides a kind of cylindrical workpiece end face grinding tool, can be assisted to support shaft body cylindrical workpiece, cooperate three-jaw chuck to realize the stability of shaft body cylindrical workpiece positioning, avoid the problem that unilateral positioning mode of shaft body cylindrical workpiece is easy to incline in the process of polishing, effectively guarantee the stability of shaft body cylindrical workpiece in the process of polishing, and then guarantee the finished product qualification rate of shaft body cylindrical workpiece end face polishing process.The specific technical scheme is as follows:

[0006] A kind of cylindrical workpiece end face grinding tool, including operation table, the left side of the upper surface of the operation table is provided with clamping part, the shaft body cylindrical workpiece is clamped and positioned in the clamping part, and the operation table is provided with support unit for supporting the shaft body cylindrical workpiece;

[0007] The support unit is provided with two groups, and the two groups of support units can be moved in horizontal direction respectively, each group of support units includes moving platform, two mounting racks are symmetrically fixedly installed on the moving platform, two first shafts are rotatably connected to the two mounting racks respectively, two first gears are fixedly installed on the two first shafts respectively, the two first gears are meshed and connected on side wall, two swing arms are fixedly installed on the two first shafts respectively, block is fixedly installed on the swing arm side wall top end, groove is arranged on the side wall of the block away from the swing arm, and the shaft body cylindrical workpiece penetrates the groove on the side wall of the block in horizontal direction.

[0008] In the above technical scheme, the side wall of one of the mounting racks is rotatably provided with a second shaft, and the second shaft penetrates the side wall of the mounting rack and is fixedly connected with the first shaft in the mounting rack, a second gear is fixedly installed on the second shaft, a fixed pedestal is fixedly installed on the upper surface of the moving platform, a rack is slidably arranged on the fixed pedestal, and the rack is meshed and connected with the second gear.

[0009] In the above technical scheme, a limiting groove is arranged on the fixed pedestal, a sliding bar is slidably embedded in the limiting groove, and the sliding bar is fixedly connected with the bottom end of the rack, a connecting block is fixedly installed on the front side end of the rack, and a fixed pin is fixedly installed on the connecting block.

[0010] The cross-sectional shape of the sliding bar is trapezoidal.

[0011] The operation table upper surface is fixedly installed with a first air cylinder in the front-rear direction, the first air cylinder output end is connected with a driving block, the driving block is fixedly installed with a moving frame, the moving frame is a long strip frame structure with a hollow through cavity, and the fixed pin is slidably embedded in the moving frame.

[0012] The moving platform front-rear sides are respectively provided with guide limiting assemblies.

[0013] Each set of guide limiting assemblies comprises two mounting seats fixedly installed on the operation table upper surface, the two mounting seats are symmetrically arranged left and right, a cross bar is fixedly installed between the two mounting seats, a translation seat is slidably sleeved on the cross bar, and the translation seat is fixedly connected with the moving platform side wall.

[0014] The operation table upper surface is fixedly installed with a second air cylinder in the horizontal direction, and the second air cylinder output end is fixedly connected with the moving platform.

[0015] The block body is provided with an adjusting assembly.

[0016] The adjusting assembly comprises a lead screw penetrating the swing arm and the block body, a moving block is threadedly sleeved on the lead screw, two limiting rods are penetratingly arranged on the swing arm and the block body, the two limiting rods are symmetrically arranged relative to the lead screw, one end of the limiting rod is fixedly connected with the moving block side wall, and the other end of the limiting rod is provided with a positioning portion.

[0017] The positioning portion is a first positioning jaw and a second positioning jaw, the first positioning jaw and the second positioning jaw are respectively installed on the end portions of the two lead screws, and the first positioning jaw and the second positioning jaw are shape-fitted.

[0018] The operation table upper surface right side is provided with a grinding assembly.

[0019] The grinding assembly comprises a third air cylinder installed on the operation table right side wall, a second vertical plate connected with the third air cylinder output end, a motor installed on the second vertical plate right side wall, a driving shaft connected with the motor output end, the driving shaft penetrating the second vertical plate in the horizontal direction, and a grinding piece fixedly installed on the driving shaft left side end portion.

[0020] The clamping portion comprises a first vertical plate fixedly installed on the operation table upper surface, a three-jaw chuck is arranged on the first vertical plate right side wall, and the shaft body columnar workpiece left side end portion is positioned in the three-jaw chuck.

[0021] Compared with the prior art, the cylindrical workpiece end face grinding tool has the beneficial effects that:

[0022] One, for the traditional three jaw chuck is clamped and fixed to the end of the shaft body cylindrical workpiece, through the polishing equipment to the other end of the shaft body cylindrical workpiece end face polishing, the shaft body cylindrical workpiece is easy to produce deflection, affect the stability in the polishing process, and lead to the shaft body cylindrical workpiece end face excessive polishing defects, affect the polishing process yield problem, the utility model discloses a set of limiting assembly can be used for the auxiliary support of the shaft body cylindrical workpiece, and the three jaw chuck is used for realizing the stable positioning of the shaft body cylindrical workpiece, so that the problem that the shaft body cylindrical workpiece is easy to deflect in the polishing process is avoided, the stability in the polishing process of the shaft body cylindrical workpiece is effectively guaranteed, and then the yield of the shaft body cylindrical workpiece end face polishing process is guaranteed;

[0023] Two, in the utility model, the two limiting assemblies can be adjusted synchronously, that is, they can be used for two-point auxiliary positioning support of the shaft body cylindrical workpiece, so that the positioning steps of the shaft body cylindrical workpiece are saved without operating the limiting assemblies one by one.

[0024] Three, the utility model discloses a first cylinder, a driving block and a moving frame, so that the two limiting assemblies can be adjusted synchronously, that is, the synchronous opening and closing of the two limiting assemblies can be realized through the same power system, the positioning synchronism of the two limiting assemblies for the shaft body cylindrical workpiece is higher, the power energy is saved, the synchronism of the whole equipment is better, and the adjustment is more convenient to operate.

[0025] Four, the utility model discloses that the rack can drive the second gear and one of the first gears to rotate synchronously, and then drive the other first gear to rotate relatively, that is, the two first gears in each limiting assembly of the utility model can rotate in linkage, and the rotation angles of the two first gears are the same, so that the two first gears can still keep the front-back symmetry after rotating.

[0026] Five, the utility model discloses that the two blocks in each limiting assembly are respectively provided with a first positioning clamp jaw and a second positioning clamp jaw, the first positioning clamp jaw and the second positioning clamp jaw can be adjusted in relative movement, the space between the first positioning clamp jaw and the second positioning clamp jaw can be adjusted, the spaces of the two first positioning clamp jaws and the second positioning clamp jaws in the two limiting assemblies can be freely adjusted, so that the support and positioning requirements of shaft body cylindrical workpieces with different thicknesses can be met, the spacing between the two first positioning clamp jaws and the second positioning clamp jaws on the left and right can be adjusted individually, so that the support and positioning requirements of the shaft body cylindrical workpieces with steps can be met, compared with the fixed space support and positioning mode, the utility model can flexibly meet the support and positioning requirements of the shaft body cylindrical workpieces with different thicknesses or the shaft body cylindrical workpieces with steps, is more flexible, and has higher universality.

[0027] Six, the two groups of mobile platforms of the utility model can be horizontally translated and adjusted, so as to realize the adjustment of the horizontal positions of the two groups of limiting components, so as to support and position different points for the shaft body cylindrical workpieces of different lengths, and make the two groups of limiting components flexibly positioned at the required positions of the shaft body cylindrical workpieces of different lengths.

[0028] To sum up, the utility model can assist in supporting the shaft body cylindrical workpiece, realizes stable positioning of the shaft body cylindrical workpiece in cooperation with the three-jaw chuck, avoids the problem that the unilateral positioning mode of the shaft body cylindrical workpiece is easy to deviate in the polishing process, effectively guarantees the stability of the shaft body cylindrical workpiece in the polishing process, and further guarantees the finished product qualification rate of the end face polishing of the shaft body cylindrical workpiece, and can flexibly adapt to the support and positioning requirements of different thick and thin shaft body cylindrical workpieces or stepped shaft body cylindrical workpieces, is more flexible, and is more universal. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structure schematic view of the horizontal rod of the utility model;

[0030] Figure 2 It is a structure schematic view of the second vertical plate of the utility model;

[0031] Figure 3 It is a top view structure schematic view of the operation table of the utility model;

[0032] Figure 4 It is a side view structure schematic view of the swing arm of the utility model;

[0033] Figure 5 It is a side view structure schematic view of the positioning part of the utility model;

[0034] Figures 1 to 5 In the utility model, 1, operation table, 2, first vertical plate, 3, three-jaw chuck, 4, shaft body cylindrical workpiece, 5, mobile platform, 6, mounting frame, 7, first rotating shaft, 8, first gear, 9, swing arm, 10, block, 11, screw rod, 12, moving block, 13, limiting rod, 14, positioning part, 141, first positioning clamp jaw, 142, second positioning clamp jaw, 15, second rotating shaft, 16, second gear, 17, fixed pedestal, 18, limiting groove, 19, sliding bar, 20, rack, 21, connecting block, 22, fixed pin, 23, first air cylinder, 24, driving block, 25, moving frame, 26, second air cylinder, 27, mounting seat, 28, horizontal rod, 29, translation seat, 30, second vertical plate, 31, motor, 32, driving shaft, 33, polishing piece, 34, third air cylinder. DETAILED DESCRIPTION

[0035] The specific embodiments and the accompanying drawings will be described below. Figures 1 to 5Further embodiments of the present application are described below, but the present application is not limited to these embodiments.

[0036] Referring to Figures 1 to 5 As shown in FIG. 1, a cylindrical workpiece end face grinding tool comprises an operating table 1, a clamping portion is arranged on the left side of the upper surface of the operating table 1, and an axial body cylindrical workpiece 4 is clamped and positioned by the clamping portion, the left end portion of the axial body cylindrical workpiece 4 is clamped and positioned by the clamping portion, a supporting unit for supporting the axial body cylindrical workpiece 4 is arranged on the operating table 1, and the axial body cylindrical workpiece 4 is assisted and supported during end face grinding by the supporting unit.

[0037] Referring mainly to Figure 1 , Figure 2 and Figure 4 As shown in FIG. 1, the supporting unit is provided with two groups, and the two groups of supporting units can move in the horizontal direction respectively to flexibly adjust the supporting points of the axial body cylindrical workpiece 4, each group of supporting units comprises a moving platform 5, two mounting racks 6 are fixedly installed on the moving platform 5 in a front-rear symmetrical manner, two first shafts 7 are rotatably connected to the two mounting racks 6 by bearings respectively, and a first gear 8 is fixedly installed on each of the two first shafts 7, when the first gear 8 rotates under force, the first shaft 7 can be driven to rotate synchronously relative to the mounting rack 6, and the two first gears 8 are meshed and connected on the side walls, wherein when one of the first gears 8 rotates, the other first gear 8 can be driven to rotate in the opposite direction, a swing arm 9 is fixedly installed on each of the two first shafts 7, the rotation of one of the first gears 8 drives the rotation of the other first gear 8, thereby realizing the synchronous rotation of the two swing arms 9 on the two first shafts 7, a block 10 is fixedly installed on the top end of the side wall of the swing arm 9, a groove is formed in the side wall of the block 10 away from the swing arm 9, the axial body cylindrical workpiece 4 penetrates the groove in the side wall of the block 10 in the horizontal direction, the two swing arms 9 rotating towards the middle drive the block 10 to rotate, thereby clamping and supporting the axial body cylindrical workpiece 4 by the block 10, and the two swing arms 9 rotating outwards drive the block 10 to disengage from the outer wall of the axial body cylindrical workpiece 4, thereby no longer supporting the axial body cylindrical workpiece 4, so as to realize the disassembly of the axial body cylindrical workpiece 4.

[0038] Referring mainly to Figure 4As shown in the drawings, the side wall of one mounting frame 6 is provided with a second rotating shaft 15 through bearing rotation, the second rotating shaft 15 penetrates the side wall of the mounting frame 6 and is fixedly connected with the first rotating shaft 7 in the mounting frame 6, in this embodiment, the side wall of the front mounting frame 6 is provided with the second rotating shaft 15, and the second rotating shaft 15 is fixedly connected with the front first rotating shaft 7, when the second rotating shaft 15 is forced to rotate, the front first rotating shaft 7 and the first gear 8 on the first rotating shaft 7 are rotated, and then the rear first gear 8 is synchronously and reversely rotated relative to the front first gear 8, so that the two swing arms 9 and the block 10 are synchronously rotated, the second gear 16 is fixedly installed on the second rotating shaft 15, the rotation of the second gear 16 realizes the rotation of the second rotating shaft 15, the fixed pedestal 17 is fixedly installed on the upper surface of the moving platform 5, the rack 20 is slidably arranged on the fixed pedestal 17 and is in meshing connection with the second gear 16, when the rack 20 is forced to move in the front-back direction, the second gear 16 is rotated, so that the first rotating shaft 7 is rotated, and finally the two first rotating shafts 7 respectively drive the two first gears 8, the swing arms 9 and the block 10 to rotate.

[0039] In addition, mainly referring to Figure 2 and Figure 4 As shown in the drawings, the fixed pedestal 17 is provided with a limiting groove 18, the limiting groove 18 is slidably embedded with a sliding strip 19, the sliding strip 19 is fixedly connected with the bottom end of the rack 20, the front end of the rack 20 is fixedly installed with a connecting block 21, the connecting block 21 is fixedly installed with a fixed pin 22, when the rack 20 moves in the front-back direction, the sliding strip 19 moves along the inner cavity of the limiting groove 18, under the limiting action of the limiting groove 18, the rack 20 can move in the front-back direction without deflection, and the stable movement of the rack 20 in the front-back direction is ensured; wherein the cross-sectional shape of the sliding strip 19 is trapezoidal, so that the sliding strip 19 cannot move out of the inner cavity of the limiting groove 18 during the movement along the inner cavity of the limiting groove 18.

[0040] Mainly referring to Figure 2 and Figure 3As shown, the first cylinder 23 is fixedly installed on the upper surface of the operating table 1 along the front-back direction, the driving block 24 is connected to the output end of the first cylinder 23, the moving frame 25 is fixedly installed on the driving block 24, the moving frame 25 is a long frame structure with a hollow through cavity, and the fixed pin 22 is slidably embedded in the moving frame 25, the driving block 24 and the moving frame 25 are driven by the opened first cylinder 23 to move synchronously in the front-back direction, so as to drive the two fixed pins 22 in the two sets of limiting assemblies to move in the front-back direction, the connecting block 21 and the rack 20 at the corresponding positions are driven by the fixed pin 22 to move in the front-back direction synchronously, the second gear 16 connected to the top end of the rack 20 is driven to rotate along with the movement of the rack 20, so as to drive the first shaft 7 connected to the second shaft 15 to rotate, and the first gear 8 on the first shaft 7 drives the other first gear 8 to rotate synchronously, so as to realize the synchronous rotation of the two swing arms 9 and the block 10 to the middle, that is, to realize the auxiliary positioning and supporting of the shaft body cylindrical workpiece 4.

[0041] In addition, mainly referring to Figure 3 and Figure 4 As shown, the moving platform 5 is provided with guiding and limiting assemblies on the front and back sides; each set of guiding and limiting assemblies comprises two mounting seats 27 fixedly installed on the upper surface of the operating table 1, the two mounting seats 27 are symmetrically arranged left and right, a cross rod 28 is fixedly installed between the two mounting seats 27, a translation seat 29 is slidably sleeved on the cross rod 28, and the translation seat 29 is fixedly connected with the side wall of the moving platform 5, a second cylinder 26 is fixedly installed on the operating table 1 along the horizontal direction, the output end of the second cylinder 26 is fixedly connected with the moving platform 5, when the moving platform 5 is driven by the second cylinder 26 to move, the translation seat 29 is driven to move in the horizontal direction along the cross rod 28, so as to ensure that the movement of the moving platform 5 is limited in the horizontal direction.

[0042] Mainly referring to Figure 4 and Figure 5 As shown, the block 10 is provided with an adjusting assembly; the adjusting assembly comprises a lead screw 11 penetrating through the swing arm 9 and the block 10, a moving block 12 is threadedly sleeved on the lead screw 11, two limiting rods 13 are penetratingly arranged on the swing arm 9 and the block 10, the two limiting rods 13 are symmetrically arranged relative to the lead screw 11, one end of the limiting rod 13 is fixedly connected with the side wall of the moving block 12, and a positioning portion 14 is installed on the other end of the limiting rod 13, the moving block 12 and the limiting rod 13 are driven to move in the front-back direction by rotating the lead screw 11, so as to adjust the size of the positioning space of the positioning portion 14, and the positioning space is flexibly adapted to shaft body cylindrical workpieces 4 of different thicknesses; for details, mainly referring to Figure 5As shown, the positioning part 14 is divided into a first positioning jaw 141 and a second positioning jaw 142, the first positioning jaw 141 and the second positioning jaw 142 are respectively installed at the end of the two lead screws 11, and the first positioning jaw 141 and the second positioning jaw 142 are shaped to match, specifically, a slot is formed on the first positioning jaw 141, and a plug capable of being inserted into the slot on the first positioning jaw 141 is arranged on the second positioning jaw 142, so that the first positioning jaw 141 and the second positioning jaw 142 do not interfere with each other when moving towards each other, and the two can still clamp and position the side wall of the shaft body cylindrical workpiece 4 when they are in a cross-holding state.

[0043] Further mainly referring to Figure 2 and Figure 3 As shown, the grinding assembly is arranged on the right side of the upper surface of the operation table 1; the grinding assembly comprises a third cylinder 34 installed on the right side wall of the operation table 1, a second vertical plate 30 connected to the output end of the third cylinder 34, a motor 31 installed on the right side wall of the second vertical plate 30, a drive shaft 32 connected to the output end of the motor 31, the drive shaft 32 penetrating the second vertical plate 30 in the horizontal direction, and a polishing piece 33 fixedly installed on the left end of the drive shaft 32; by turning on the motor 31 to drive the drive shaft 32 and the polishing piece 33 to rotate, and by turning on the third cylinder 34 to drive the second vertical plate 30 to move leftward along the horizontal direction, the polishing piece 33 gradually approaches the right end of the shaft body cylindrical workpiece 4, so that the right end surface of the shaft body cylindrical workpiece 4 is ground by the rotating polishing piece 33.

[0044] The clamping part comprises a first vertical plate 2 fixedly installed on the upper surface of the operation table 1, a three-jaw chuck 3 arranged on the right side wall of the first vertical plate 2, and the left end of the shaft body cylindrical workpiece 4 positioned in the three-jaw chuck 3; the three-jaw chuck 3 can clamp and position the left end of the shaft body cylindrical workpiece 4, so as to ensure the stability of the left end of the shaft body cylindrical workpiece 4 during grinding.

[0045] It is worth noting that in this application, the three-jaw chuck 3 is a existing device, which can use a three-jaw chuck commonly used on the market that can stably position the outer wall of the shaft, and the model is not limited here; the first cylinder 23, the second cylinder 26, and the third cylinder 34 are self-locking cylinders commonly used on the market, the output end of which can stay at any position and be locked; the motor 31 is a self-locking motor commonly used on the market, the output end of which can be locked when it is stopped, and it will not rotate under external force; the motor 31 is a commonly used forward and reverse motor on the market, the output end of which can rotate forward or backward according to the use requirement, which can meet the above use requirement; the lead screw 11 is a lead screw 11 that can realize self-locking on the existing market, which can realize self-locking when it stops rotating and will not be affected by external force to rotate; the above existing components are not described in detail here.

[0046] The working principle of the embodiment of the cylindrical workpiece end face grinding tool is as follows:

[0047] After the left end of the shaft body cylindrical workpiece 4 is clamped and positioned by means of the existing three-jaw chuck 3, the positions of the two sets of limiting assemblies relative to the shaft body cylindrical workpiece 4 are adjusted: the moving platform 5 at the corresponding position is translated by opening the second air cylinder 26 to move the positions of the swing arm 9 and the positioning part 14 arranged on the moving platform 5 in the horizontal direction, so that the two sets of positioning parts 14 are located at appropriate positions of the shaft body cylindrical workpiece 4; during the movement of the moving platform 5, the translation seat 29 moves along the outer wall of the cross bar 28 to ensure that the movement of the moving platform 5 is limited in the horizontal direction;

[0048] The shaft body cylindrical workpiece 4 is assisted and supported by the two sets of limiting assemblies: the driving block 24 and the moving frame 25 are synchronously moved in the front-back direction by opening the first air cylinder 23 to move the two fixed pins 22 in the front-back direction, the fixed pins 22 synchronously move the connecting blocks 21 and the racks 20 at the corresponding positions in the front-back direction, and the sliding bars 19 move along the inner cavities of the limiting grooves 18, the second gears 16 at the top ends of the racks 20 are driven to rotate by the movement of the racks 20, the first shaft 7 connected with the second shaft 15 is rotated by the second shaft 15, the first gears 8 on the first shaft 7 are rotated, and since the two first gears 8 in each set are meshed and connected, the rotation of one first gear 8 synchronously rotates the other first gear 8 to synchronously rotate the two swing arms 9 and the block body 10 to the middle, that is, to synchronously rotate the first positioning jaw 141 and the second positioning jaw 142 to the middle, until the first positioning jaw 141 and the second positioning jaw 142 are clamped at the side wall of the shaft body cylindrical workpiece 4, thereby assisting and supporting the shaft body cylindrical workpiece 4;

[0049] The driving shaft 32 and the grinding piece 33 are rotated by opening the motor 31, and the second vertical plate 30 is moved to the left along the horizontal direction by opening the third air cylinder 34, so that the grinding piece 33 gradually approaches the right end of the shaft body cylindrical workpiece 4, thereby grinding the right end face of the shaft body cylindrical workpiece 4 by means of the rotating grinding piece 33;

[0050] When the shaft body cylindrical workpiece 4 is stepped or the thickness of the shaft body cylindrical workpiece 4 changes, the spacing between the two groups of first positioning clamps 141 and second positioning clamps 142 can be adjusted as needed: the driving screw rod 11 is rotated, the moving block 12 threaded on the screw rod 11 moves along the screw rod 11, the moving block 12 drives the limiting rod 13 to move, so that the first positioning clamp 141 or the second positioning clamp 142 connected to the limiting rod 13 moves, thereby adjusting the spacing between the first positioning clamp 141 and the second positioning clamp 142, and flexibly meeting the clamping and positioning requirements of the side wall of the shaft body cylindrical workpiece 4 of different thicknesses or steps;

[0051] The utility model discloses can to shaft body cylindrical workpiece 4 carry out auxiliary support, cooperate three claw chuck 3 and realize the stable positioning of shaft body cylindrical workpiece 4, avoid the problem that the unilateral positioning mode of shaft body cylindrical workpiece 4 is easy to incline in polishing process, effectively guarantee the stability in the polishing process of shaft body cylindrical workpiece 4, and then guarantee the finished product pass rate of shaft body cylindrical workpiece 4 end face polishing, and can flexibly adapt the support and positioning demand of different thickness shaft body cylindrical workpiece 4 or stepped shaft body cylindrical workpiece 4, more flexible, and the versatility of equipment is stronger.

[0052] The above only is the preferred embodiment of the utility model and does not limit the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cylindrical workpiece end face grinding tool comprising an operating table (1), characterized in that: The left side of the upper surface of the operating table (1) is provided with a clamping part, the shaft body cylindrical workpiece (4) is clamped and positioned, and the operating table (1) is provided with a support unit for supporting the shaft body cylindrical workpiece (4); The support unit is provided with two groups, and the two groups of support units can move horizontally respectively, each group of support units includes a moving platform (5), two mounting frames (6) are symmetrically and fixedly installed on the moving platform (5), two first rotating shafts (7) are rotatably connected to the two mounting frames (6) respectively, two first gears (8) are fixedly installed on the two first rotating shafts (7) respectively, the two first gears (8) are meshed and connected on the side wall, two swing arms (9) are fixedly installed on the two first rotating shafts (7) respectively, a block (10) is fixedly installed on the top end of the side wall of the swing arm (9), and a groove is formed in the side wall away from the swing arm (9) of the block (10). The shaft body cylindrical workpiece (4) penetrates the groove in the side wall of the block (10).

2. The cylindrical workpiece end face grinding tool according to claim 1, characterized in that: The side wall of one of the mounting frames (6) is rotatably provided with a second rotating shaft (15), the second rotating shaft (15) penetrates the side wall of the mounting frame (6) and is fixedly connected with the first rotating shaft (7) in the mounting frame (6), a second gear (16) is fixedly installed on the second rotating shaft (15), a fixed pedestal (17) is fixedly installed on the upper surface of the moving platform (5), a rack (20) is slidably arranged on the fixed pedestal (17), and the rack (20) is meshed and connected with the second gear (16).

3. The cylindrical workpiece end face grinding tool according to claim 2, characterized in that: A limiting groove (18) is formed in the fixed pedestal (17), a sliding bar (19) is slidably embedded in the limiting groove (18), and the sliding bar (19) is fixedly connected with the bottom end of the rack (20). The front end of the rack (20) is fixedly installed with a connecting block (21), and the connecting block (21) is fixedly installed with a fixed pin (22). The cross section of the sliding bar (19) is trapezoidal.

4. The cylindrical workpiece end face grinding tool according to claim 3, characterized in that: A first air cylinder (23) is fixedly installed on the upper surface of the operating table (1) in the front-rear direction, a driving block (24) is connected to the output end of the first air cylinder (23), a moving frame (25) is fixedly installed on the driving block (24), the moving frame (25) is a long strip frame structure with a hollow cavity, and the fixed pin (22) is slidably embedded in the moving frame (25).

5. The cylindrical workpiece end face grinding tool according to claim 4, characterized in that: The moving platform (5) is provided with a guide limiting assembly on the front and rear sides respectively. Each guide limiting assembly includes two mounting seats (27) fixedly installed on the upper surface of the operating table (1), the two mounting seats (27) are symmetrically arranged left and right, a cross bar (28) is fixedly installed between the two mounting seats (27), a translation seat (29) is slidably sleeved on the cross bar (28), and the translation seat (29) is fixedly connected with the side wall of the moving platform (5).

6. The cylindrical workpiece end face grinding tool according to Claim 1, characterized by: A second air cylinder (26) is fixedly installed on the operating table (1) in the horizontal direction, and the output end of the second air cylinder (26) is fixedly connected with the moving platform (5).

7. The cylindrical workpiece end face grinding tool according to Claim 1, characterized by: An adjusting assembly is arranged at the block (10); The adjusting assembly comprises a lead screw (11) penetrating through the swing arm (9) and the block (10), a moving block (12) is threadedly sleeved on the lead screw (11), the swing arm (9) and the block (10) are provided with two limiting rods (13) penetrating through, the two limiting rods (13) are symmetrically arranged relative to the lead screw (11), one end of the limiting rod (13) is fixedly connected with the side wall of the moving block (12), and the other end of the limiting rod (13) is provided with a positioning part (14).

8. The cylindrical workpiece end face grinding tool according to claim 7, characterized in that: The positioning part (14) is divided into a first positioning jaw (141) and a second positioning jaw (142), the first positioning jaw (141) and the second positioning jaw (142) are respectively installed at the ends of the two lead screws (11), and the first positioning jaw (141) and the second positioning jaw (142) are matched in shape.

9. The cylindrical workpiece end face grinding tool according to Claim 1, characterized by: A grinding assembly is arranged on the right side of the upper surface of the operation table (1); The grinding assembly comprises a third air cylinder (34) installed on the right side wall of the operation table (1), a second vertical plate (30) connected with the output end of the third air cylinder (34), a motor (31) installed on the right side wall of the second vertical plate (30), a driving shaft (32) connected with the output end of the motor (31), the driving shaft (32) penetrating through the second vertical plate (30) in the horizontal direction, and a grinding piece (33) fixedly installed on the left end of the driving shaft (32).

10. The cylindrical workpiece end face grinding tool according to Claim 1, characterized by: The clamping part comprises a first vertical plate (2) fixedly installed on the upper surface of the operation table (1), a three-jaw chuck (3) arranged on the right side wall of the first vertical plate (2), and the left end of the shaft body columnar workpiece (4) is positioned in the three-jaw chuck (3).

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