Positioning device for accurate punching of crankshaft workpiece

Abstract

The accurate punching and positioning device comprises a stand column frame and an opening supporting frame, the surface of the stand column frame is sleeved with the opening supporting frame, semicircular gears are symmetrically and movably installed in the opening supporting frame, and a connecting frame is installed between the two sets of semicircular gears. A turnover table is arranged outside the connecting frame, two sets of limiting grooves are formed in the top end of the turnover table, positioning frames are arranged on the portions, on one sides of the limiting grooves, of the outer wall of the turnover table, and supporting bases are arranged at the portions, on the two sides of the connecting frame, of the top end of the opening supporting frame. According to the punching and positioning device, the crankshaft workpiece can be conveniently clamped and fixed, the position can be adjusted through multi-position rotation, the height position can be adjusted, different positions of the same workpiece can be conveniently and rapidly adjusted, positioned and punched, and the clamping stability of the crankshaft workpiece and the convenience of height adjustment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning devices, in particular to a positioning device for accurately punching a crankshaft workpiece. Background Art

[0002] The crankshaft is the main rotating part of the engine. After the connecting rod is installed, it can convert the up and down reciprocating motion of the connecting rod into a circular rotating motion. The crankshaft is an important part of the engine. Its material is made of carbon structural steel or ductile iron. The crankshaft is the main part of the automobile engine. It converts the force transmitted from the connecting rod into torque, and drives other accessories on the engine through the output of the crankshaft main journal. The main journal is at the center of rotation, and the connecting rod journal is in an eccentric position. The rotation of the crankshaft relies on the piston to repeatedly push the connecting rod to make the crankshaft rotate around the center of rotation of the main journal to generate power. The crankshaft is subjected to the combined action of the centrifugal force of the rotating mass, the periodically changing gas inertia force and the reciprocating inertia force, so that the crankshaft is subjected to bending and torsional loads.

[0003] For example, a device for accurately drilling and positioning a crankshaft workpiece disclosed in the authorization announcement number CN220260178U includes a bottom plate, the upper surface of which is fixedly connected to a first vertical plate, the upper surface of which is provided with two slide grooves, the inner wall of each slide groove is slidably connected to a slider, the upper surfaces of the two sliders are commonly fixedly connected to a second vertical plate, and the first vertical plate and the second vertical plate are fixedly connected to a crankshaft clamp on one side close to each other;

[0004] Although the threaded rod and the bent plate with holes are matched to enable the threaded rod to push the second vertical plate to move, the second vertical plate can push the crankshaft clamping plate to move, and the crankshaft clamping plate can clamp multiple journals of the crankshaft through the crankshaft clamping groove and the journal clamping groove at the same time, and position multiple journals at the same time, which can prevent the journals from rotating, solves the problem that the journals are easy to rotate when positioning a single shaft diameter due to different positions of the journals, making it difficult to ensure the drilling accuracy during the drilling process;

[0005] However, the problem that the existing positioning device is not conducive to convenient clamping and fixing of the crankshaft workpiece during use, multi-position rotation adjustment position and height position adjustment, is not conducive to rapid adjustment, positioning and drilling of different positions of the same workpiece, greatly affects the stability of the crankshaft workpiece clamping, and greatly affects the convenience of height adjustment. Utility Model Content

[0006] The purpose of the utility model is to provide a device for accurately drilling and positioning a crankshaft workpiece, so as to solve the problem that the positioning device proposed in the above background technology is not convenient for conveniently clamping and fixing the crankshaft workpiece, and the multi-position rotation adjustment position and height position adjustment are not conducive to the rapid adjustment, positioning and drilling processing of different positions of the same workpiece, which greatly affects the stability of the crankshaft workpiece clamping and greatly affects the convenience of height adjustment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for accurately drilling and positioning a crankshaft workpiece, comprising a column frame and an open support frame, the surface of the column frame is covered with the open support frame, the interior of the open support frame is symmetrically and movably installed with a semicircular gear, and a connecting frame is installed between the two groups of semicircular gears, the outside of the connecting frame is provided with a turning table, the top of the turning table is provided with two groups of limiting grooves, the outer wall of the turning table on one side of the limiting groove is provided with a positioning frame, the top of the open support frame on both sides of the connecting frame is provided with a support seat, and the two groups of support seats are symmetrically installed, the interior of the support seat is provided with an articulated shaft, and the articulated shaft is fixedly connected to the semicircular gear, and the articulated shaft is movably connected to the support seat, the interior of the positioning frame is symmetrically and movably installed with a cylinder, the output end of the cylinder is provided with a lower adjustment arm, and the lower adjustment arm is movably connected to the positioning frame through a movable shaft.

[0008] Preferably, an upper adjusting arm is installed on the outer wall of the lower adjusting arm on one side of the movable shaft, a variable frequency motor is installed on the top of the upper adjusting arm, a clamping wheel is installed on the output end of the variable frequency motor, and a supporting wheel is arranged on the top of the positioning frame between the two sets of clamping wheels.

[0009] Preferably, a fixing frame is provided inside the open support frame, a stepping motor is provided at the top of the fixing frame, a driving gear is provided at the output end of the stepping motor, a linkage rod is movably installed inside the open support frame on one side of the driving gear, and the linkage rod extends to the outside of the open support frame.

[0010] Preferably, the surface of the linkage rod on the driving gear side is provided with a driven gear, and the driven gear is meshed with the driving gear, and the surface of the linkage rod on the semicircular gear side is provided with an auxiliary gear, and the auxiliary gear is meshed with the semicircular gear.

[0011] Preferably, a rotating motor is provided on the outer wall of the connecting frame, a pinion is provided on the output end of the rotating motor, a small toothed disc is provided at the bottom end of the flip table on one side of the pinion, and the small toothed disc is meshed with the pinion, a limiting shaft is installed at the bottom end of the small toothed disc, and the limiting shaft is movably connected to the connecting frame.

[0012] Preferably, a servo motor is arranged inside the column frame, a threaded sleeve is arranged inside the column frame on one side of the open support frame, and the threaded sleeve is connected to the open support frame.

[0013] Preferably, a threaded rod is provided inside the threaded sleeve, and the threaded rod extends to the outside of the threaded sleeve, and the threaded rod is connected to the output end of the servo motor.

[0014] Preferably, a remote controller is provided on the outer wall of the open support frame, and an output end of the remote controller is electrically connected to an input end of a stepper motor, a rotary motor, a cylinder, a servo motor, or a variable frequency motor.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the positioning device not only realizes the convenient clamping and fixing of the crankshaft workpiece by the punching positioning device, but also realizes the multi-position rotation adjustment of the position and the height position adjustment, which facilitates the rapid adjustment and positioning of the punching process at different positions of the same workpiece, and improves the stability of the clamping of the crankshaft workpiece and the convenience of height adjustment;

[0016] (1) The lower adjusting arm is driven to rotate by the cylinder, and the lower adjusting arm rotates with the movable shaft as the axis. The lower adjusting arm drives the variable frequency motor and the clamping wheel to rotate. When the two sets of upper adjusting arms drive the clamping wheel to rotate until it contacts the crankshaft workpiece that needs to be punched, the crankshaft workpiece that needs to be punched is clamped and fixed under the action of the supporting wheel and the two sets of clamping wheels. The clamping wheel is driven by the variable frequency motor to rotate, and with the cooperation of the supporting wheel, the crankshaft workpiece is conveniently rotated to increase the processing range of the crankshaft workpiece, so that the punching positioning device can conveniently clamp and fix the crankshaft workpiece, and improve the stability of the crankshaft workpiece clamping;

[0017] (2) The driving gear is driven to rotate by a stepper motor, and the driving gear drives the linkage rod to rotate through the driven gear, and the linkage rod drives the auxiliary gear to rotate, and the linkage rod drives the semicircular gear to rotate with the hinge shaft as the axis through the auxiliary gear. When it rotates to the required angle, the rotating motor drives the small gear to rotate, and the small gear drives the turning table to rotate through the small gear plate, so as to facilitate the multi-position rotation processing of the crankshaft workpiece that needs to be punched, and realizes the convenient multi-position rotation adjustment position of the precise punching positioning device for the crankshaft workpiece, which is convenient for the rapid adjustment, positioning and punching processing of different positions of the same workpiece;

[0018] (3) The threaded rod is driven to rotate by a servo motor, and the threaded sleeve drives the open support frame to move as a whole. When it moves to the specified position, it is convenient to adjust the overall height of the open support frame, thereby realizing convenient height position adjustment of the punching positioning device and improving the convenience of height adjustment of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2It is a schematic diagram of the three-dimensional structure of the open support frame of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the semicircular gear of the utility model;

[0022] Figure 4 It is a front view cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the positioning frame of the utility model.

[0024] In the figure: 1. column frame; 2. open support frame; 3. semicircular gear; 4. turning table; 5. limit groove; 6. positioning frame; 7. cylinder; 8. upper adjustment arm; 9. fixed frame; 10. stepping motor; 11. driving gear; 12. driven gear; 13. auxiliary gear; 14. linkage rod; 15. connecting frame; 16. articulated shaft; 17. rotating motor; 18. small gear; 19. small gear plate; 20. servo motor; 21. threaded rod; 22. threaded sleeve; 23. remote controller; 24. supporting wheel; 25. clamping wheel; 26. movable shaft; 27. supporting seat; 28. lower adjustment arm; 29. ​​frequency conversion motor; 30. limit shaft. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 , the utility model provides an embodiment: a device for accurately drilling and positioning a crankshaft workpiece, comprising a column frame 1 and an open support frame 2, the surface of the column frame 1 is covered with the open support frame 2, the interior of the open support frame 2 is symmetrically and movably mounted with a semicircular gear 3, and a connecting frame 15 is installed between the two groups of semicircular gears 3, a turning table 4 is arranged outside the connecting frame 15, and two groups of limiting grooves 5 are arranged at the top of the turning table 4, and a positioning frame 6 is arranged on the outer wall of the turning table 4 on one side of the limiting groove 5, and the tops of the open support frames 2 on both sides of the connecting frame 15 are provided with support seats 27, and the two groups of support seats 27 are symmetrically installed, and the interior of the support seats 27 is provided with an articulated shaft 16, and the articulated shaft 16 is fixedly connected to the semicircular gear 3, and the articulated shaft 16 is movably connected to the support seat 27, and the interior of the positioning frame 6 is symmetrically and movably mounted with a cylinder 7, and the cylinder 7 plays a role of power driving, and the output end of the cylinder 7 is provided with a lower adjusting arm 28, and the lower adjusting arm 28 is movably connected to the positioning frame 6 through a movable shaft 26;

[0027] The upper adjusting arm 8 is installed on the outer wall of the lower adjusting arm 28 on one side of the movable shaft 26, and the top of the upper adjusting arm 8 is installed with a variable frequency motor 29, which plays a role of power drive, and the output end of the variable frequency motor 29 is installed with a clamping wheel 25, and the top of the positioning frame 6 between the two groups of clamping wheels 25 is provided with a supporting wheel 24;

[0028] The cylinder 7 is started by operating the remote controller 23, and the cylinder 7 drives the lower adjusting arm 28 to rotate. The lower adjusting arm 28 rotates with the movable shaft 26 as the axis, and the lower adjusting arm 28 drives the variable frequency motor 29 and the clamping wheel 25 to rotate. When the two groups of upper adjusting arms 8 drive the clamping wheel 25 to rotate until they contact the crankshaft workpiece that needs to be punched, the remote controller 23 is operated to close the cylinder 7, and the cylinder 7 drives the lower adjusting arm 28 to stop rotating. The lower adjusting arm 28 stops driving the upper adjusting arm 8 to rotate through the movable shaft 26, and the upper adjusting arm 8 stops driving the clamping wheel 25 to rotate. Under the action of the supporting wheel 24 and the two groups of clamping wheels 25, the crankshaft workpiece that needs to be punched is clamped and fixed. The variable frequency motor 29 is turned on by operating the remote controller 23, and the clamping wheel 25 is driven by the variable frequency motor 29 to rotate. With the cooperation of the supporting wheel 24, the crankshaft workpiece is conveniently rotated to increase the processing range of the crankshaft workpiece, so that the punching positioning device can conveniently clamp and fix the crankshaft workpiece, and improve the stability of the crankshaft workpiece clamping.

[0029] A fixing frame 9 is arranged inside the open support frame 2, and a stepping motor 10 is arranged at the top of the fixing frame 9. The stepping motor 10 plays a role of power driving. A driving gear 11 is arranged at the output end of the stepping motor 10. A linkage rod 14 is movably installed inside the open support frame 2 on one side of the driving gear 11, and the linkage rod 14 extends to the outside of the open support frame 2;

[0030] The surface of the linkage rod 14 on one side of the driving gear 11 is provided with a driven gear 12, and the driven gear 12 is meshed with the driving gear 11. The surface of the linkage rod 14 on one side of the semicircular gear 3 is provided with an auxiliary gear 13, and the auxiliary gear 13 is meshed with the semicircular gear 3.

[0031] The outer wall of the connecting frame 15 is provided with a rotating motor 17, which plays a role of power driving. A pinion 18 is provided at the output end of the rotating motor 17. A small toothed disc 19 is provided at the bottom end of the turning table 4 on one side of the pinion 18, and the small toothed disc 19 is meshed with the pinion 18. A limit shaft 30 is installed at the bottom end of the small toothed disc 19, and the limit shaft 30 is movably connected to the connecting frame 15.

[0032] The stepper motor 10 is started by operating the remote controller 23, and the fixed frame 9 supports the stepper motor 10. The stepper motor 10 drives the driving gear 11 to rotate. Under the meshing action of the driving gear 11 and the driven gear 12, the driving gear 11 drives the linkage rod 14 to rotate through the driven gear 12, and the linkage rod 14 drives the auxiliary gear 13 to rotate. Under the meshing action of the auxiliary gear 13 and the semicircular gear 3, the linkage rod 14 drives the semicircular gear 3 to rotate around the hinge shaft 16 through the auxiliary gear 13. When it rotates to the required angle, the remote controller 23 is operated to turn off the stepper motor 10, and the stepper motor 10 stops driving the driving gear 11 to rotate, and the driving gear 11 stops driving the linkage rod 14 to rotate through the driven gear 12, and the linkage rod 14 stops driving the auxiliary gear 13 The auxiliary gear 13 rotates, and the linkage rod 14 stops driving the semicircular gear 3 to rotate with the hinge shaft 16 as the axis through the auxiliary gear 13. The rotating motor 17 is started by operating the remote controller 23, and the connecting frame 15 supports the rotating motor 17. The rotating motor 17 drives the pinion 18 to rotate. Under the meshing action of the pinion 18 and the small toothed plate 19, under the support of the limit shaft 30 on the small toothed plate 19, and under the support of the limit shaft 30 on the connecting frame 15, the pinion 18 drives the turning table 4 to rotate through the small toothed plate 19, so as to facilitate the multi-position rotation processing operation of the crankshaft workpiece that needs to be punched, and realize the convenient multi-position rotation adjustment position of the precise punching positioning device for the crankshaft workpiece, which is convenient for fast adjustment, positioning and punching processing of different positions of the same workpiece;

[0033] A servo motor 20 is arranged inside the column frame 1, and the servo motor 20 plays a role of power drive. A threaded sleeve 22 is arranged inside the column frame 1 on one side of the open support frame 2, and the threaded sleeve 22 is connected to the open support frame 2. A threaded rod 21 is arranged inside the threaded sleeve 22, and the threaded rod 21 extends to the outside of the threaded sleeve 22, and the threaded rod 21 is connected to the output end of the servo motor 20;

[0034] A remote controller 23 is disposed on the outer wall of the open support frame 2, and the output end of the remote controller 23 is electrically connected to the input ends of the stepper motor 10, the rotary motor 17, the cylinder 7, the servo motor 20, and the variable frequency motor 29;

[0035] The servo motor 20 is started by operating the remote controller 23, and the column frame 1 supports the servo motor 20. The servo motor 20 drives the threaded rod 21 to rotate. Under the thread cooperation of the threaded rod 21 and the threaded sleeve 22, the threaded rod 21 drives the threaded sleeve 22 to move. At the same time, the threaded sleeve 22 drives the open support frame 2 to move as a whole. When it moves to the specified position, the servo motor 20 is turned off by operating the remote controller 23. The servo motor 20 drives the threaded rod 21 to stop rotating, and the threaded rod 21 drives the threaded sleeve 22 to stop moving. At the same time, the threaded sleeve 22 drives the open support frame 2 to stop moving as a whole, so as to facilitate the overall height adjustment of the open support frame 2, realize the convenient height position adjustment of the punching positioning device, and improve the convenience of height adjustment of the positioning device.

[0036] Working principle: When in use, an external power source drives the lower adjusting arm 28 to rotate through the cylinder 7. The lower adjusting arm 28 rotates with the movable shaft 26 as the axis. The lower adjusting arm 28 drives the variable frequency motor 29 and the clamping wheel 25 to rotate. When the two sets of upper adjusting arms 8 drive the clamping wheel 25 to rotate until it contacts the crankshaft workpiece that needs to be punched, the crankshaft workpiece that needs to be punched is clamped and fixed under the action of the supporting wheel 24 and the two sets of clamping wheels 25. The variable frequency motor 29 drives the clamping wheel 25 to rotate to facilitate the self-rotation of the crankshaft workpiece to increase the processing range of the crankshaft workpiece. The stepping motor 10 drives the driving gear 11 to rotate, and the driving gear 11 drives the linkage rod 1 through the driven gear 12. 4 rotates, the linkage rod 14 drives the auxiliary gear 13 to rotate, and the linkage rod 14 drives the semicircular gear 3 to rotate around the hinge shaft 16 through the auxiliary gear 13. When it rotates to the required angle, the rotating motor 17 drives the small gear 18 to rotate, and the small gear 18 drives the turning table 4 to rotate through the small gear plate 19, so as to facilitate the multi-position rotation processing of the crankshaft workpiece that needs to be punched. The threaded rod 21 is driven to rotate by the servo motor 20, and the threaded rod 21 drives the threaded sleeve 22 to move. At the same time, the threaded sleeve 22 drives the open support frame 2 to move as a whole. When it moves to the specified position, it is convenient to adjust the overall height of the open support frame 2 to complete the use of the positioning device.

Claims

1. A device for accurately drilling and positioning a crankshaft workpiece, comprising a column frame (1) and an opening support frame (2), characterized in that: The surface of the column frame (1) is provided with an open support frame (2), the interior of the open support frame (2) is symmetrically and movably provided with a semicircular gear (3), and a connecting frame (15) is installed between the two groups of semicircular gears (3), the outside of the connecting frame (15) is provided with a turning platform (4), the top of the turning platform (4) is provided with two groups of limiting grooves (5), the outer wall of the turning platform (4) on one side of the limiting groove (5) is provided with a positioning frame (6), and the tops of the open support frames (2) on both sides of the connecting frame (15) are provided with a positioning frame (6). A support seat (27) is provided, and two groups of support seats (27) are symmetrically installed. A hinge shaft (16) is provided inside the support seat (27), and the hinge shaft (16) is fixedly connected to the semicircular gear (3), and the hinge shaft (16) is movably connected to the support seat (27). A cylinder (7) is symmetrically and movably installed inside the positioning frame (6), and a lower adjustment arm (28) is provided at the output end of the cylinder (7), and the lower adjustment arm (28) is movably connected to the positioning frame (6) through the movable shaft (26).

2. The device for accurately drilling and positioning a crankshaft workpiece according to claim 1, characterized in that: An upper adjusting arm (8) is installed on the outer wall of the lower adjusting arm (28) on one side of the movable shaft (26), a variable frequency motor (29) is installed on the top of the upper adjusting arm (8), a clamping wheel (25) is installed on the output end of the variable frequency motor (29), and a supporting wheel (24) is arranged on the top of the positioning frame (6) between the two groups of clamping wheels (25).

3. The device for accurately drilling and positioning a crankshaft workpiece according to claim 1, characterized in that: A fixing frame (9) is arranged inside the open support frame (2), a stepping motor (10) is arranged at the top end of the fixing frame (9), a driving gear (11) is arranged at the output end of the stepping motor (10), a linkage rod (14) is movably installed inside the open support frame (2) on one side of the driving gear (11), and the linkage rod (14) extends to the outside of the open support frame (2).

4. The device for accurately drilling and positioning a crankshaft workpiece according to claim 3, characterized in that: A driven gear (12) is mounted on the surface of the linkage rod (14) on one side of the driving gear (11), and the driven gear (12) is meshed with the driving gear (11); an auxiliary gear (13) is mounted on the surface of the linkage rod (14) on one side of the semicircular gear (3), and the auxiliary gear (13) is meshed with the semicircular gear (3).

5. The device for accurately drilling and positioning a crankshaft workpiece according to claim 1, characterized in that: The outer wall of the connecting frame (15) is provided with a rotating motor (17), the output end of the rotating motor (17) is provided with a pinion (18), the bottom end of the turning platform (4) on one side of the pinion (18) is provided with a small toothed disc (19), and the small toothed disc (19) is meshed with the pinion (18), and a limiting shaft (30) is installed at the bottom end of the small toothed disc (19), and the limiting shaft (30) is movably connected to the connecting frame (15).

6. The device for accurately drilling and positioning a crankshaft workpiece according to claim 1, characterized in that: A servo motor (20) is arranged inside the column frame (1), and a threaded sleeve (22) is arranged inside the column frame (1) on one side of the open support frame (2), and the threaded sleeve (22) is connected to the open support frame (2).

7. The device for accurately drilling and positioning a crankshaft workpiece according to claim 6, characterized in that: A threaded rod (21) is arranged inside the threaded sleeve (22), and the threaded rod (21) extends to the outside of the threaded sleeve (22), and the threaded rod (21) is connected to the output end of the servo motor (20).

8. The device for accurately drilling and positioning a crankshaft workpiece according to claim 1, characterized in that: A remote controller (23) is provided on the outer wall of the open support frame (2), and the output end of the remote controller (23) is electrically connected to the input ends of the stepping motor (10), the rotating motor (17), the cylinder (7), the servo motor (20), and the variable frequency motor (29).

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