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CN-122007903-A - Large-displacement engine crank pulley composite machining device

CN122007903ACN 122007903 ACN122007903 ACN 122007903ACN-122007903-A

Abstract

The application relates to the field of intelligent manufacturing equipment industry and discloses a large-displacement engine crank pulley composite machining device which comprises a base, wherein a transverse machining machine and a longitudinal machining machine for machining a pulley are arranged above the base, a gain mechanism for assisting the transverse machining machine and the longitudinal machining machine in machining the pulley is arranged inside the base, a sliding column is driven to move through a rotating cylinder, the sliding column moves to drive a cylindrical cam rod to move up and down in the rotating cylinder, the cylindrical cam rod drives a connecting sleeve to move to drive a trapezoid block at one end of a push rod to move in a placing disc, the trapezoid block can push an auxiliary block to slide out in the placing disc through inclined planes at two sides, so that the auxiliary block is fully contacted with the bottom of the pulley, extrusion force suffered by the pulley machining is dispersed by the placing disc and the auxiliary block at the same time, the situation that stress concentration occurs in the pulley in the punching machining process can be effectively avoided, and the vertical extrusion force from a cutter can be effectively reduced.

Inventors

  • CHEN ZHIYI

Assignees

  • 浙江迦勒新材料有限公司

Dates

Publication Date
20260512
Application Date
20260403

Claims (10)

  1. 1. The utility model provides a compound processingequipment of big discharge capacity engine crank pulley, includes base (1), its characterized in that, the top of base (1) is provided with transverse processor (2) and vertical processor (3) that are used for carrying out the processing to the belt pulley, the inside of base (1) is provided with gain mechanism (4) that are used for assisting transverse processor (2) and vertical processor (3) to belt pulley processing, gain mechanism (4) are including rotatable rotary drum (404), the top fixedly connected with of rotary drum (404) places dish (405), the inside of placing dish (405) is provided with expands supporting shoe (406) that are used for expanding the centre gripping to the crank pulley, the inside sliding connection of rotary drum (404) has cylindrical cam pole (408), the fixed surface of cylindrical cam pole (408) is connected with adapter sleeve (409), the outside of adapter sleeve (409) is connected with a plurality of ejector pins (412) through the articulated ball, the other end of ejector pin (412) is connected with trapezoidal piece (413) through the articulated ball, both sides sliding block (414) of trapezoidal piece (413), but auxiliary cam (408) are placed for rotating with rotary drum (408).
  2. 2. The large-displacement engine crank pulley composite processing device according to claim 1, wherein the gain mechanism (4) further comprises a driving motor (401) fixedly arranged on one side of the base (1), an output end of the driving motor (401) is fixedly connected with a driving wheel (402), a surface of the driving wheel (402) is connected with a driven wheel (403) through belt transmission, the driven wheel (403) is fixedly connected with a rotary cylinder (404), a sliding column (407) is slidably clamped on the inner side of the rotary cylinder (404), a spiral groove is formed in the surface of the cylindrical cam rod (408), one end of the sliding column (407) is in sliding connection with the spiral groove formed in the surface of the cylindrical cam rod (408), and the rotary cylinder (404) is in rotary connection with the base (1).
  3. 3. The large-displacement engine crank pulley compound processing device according to claim 2, wherein one end of the sliding column (407) far away from the spiral groove of the cylindrical cam rod (408) is elastically connected with a pawl block (416), the inside of the rotary cylinder (404) is fixedly connected with a ratchet disc (415) matched with the pawl block (416), a sealing gasket is arranged at the sliding position of the cylindrical cam rod (408) and the rotary cylinder (404), and a sealing gasket is also arranged at the rotating connection position of the rotary cylinder (404) and the base (1).
  4. 4. The large-displacement engine crank pulley composite machining device according to claim 1, wherein an auxiliary mechanism (5) for counteracting the extrusion force of a pulley by a cutter is further arranged in the base (1) in cooperation with a gain mechanism (4), the auxiliary mechanism (5) comprises a connecting cylinder (502) fixedly connected with a rotary cylinder (404), a rotating rod (501) is connected with an internal spline of the connecting cylinder (502), a conical disc (503) is fixedly connected with the surface of the rotating rod (501), a plurality of sliding jacking blocks (504) are slidably clamped on the outer side of the conical disc (503), a matching rod (505) is fixedly connected on the inner side of the sliding jacking blocks (504), one end of the matching rod (505) is in sliding contact with a cylindrical cam rod (408), and the cylindrical cam rod (408) is sleeved on the outer side of the rotating rod (501).
  5. 5. The large-displacement engine crank pulley composite processing device according to claim 4, wherein the auxiliary mechanism (5) further comprises a plurality of clamping plates (506) arranged above the rotary cylinder (404), wedge plates (507) are fixedly connected to two sides above the clamping plates (506), wedge grooves are formed in the middle positions of the matching rods (505), two sides of each wedge plate (507) are matched with the wedge grooves formed in the middle positions of the matching rods (505), the lower parts of the clamping plates (506) are movably connected with the surface of the ejector rod (412), and telescopic rods are arranged between the lower parts of the clamping plates (506) and the rotary cylinder (404).
  6. 6. The large-displacement engine crank pulley composite processing device according to claim 4, wherein an annular limiting groove (410) is formed in the cylindrical cam rod (408), a driving block (411) is arranged on the inner side of the limiting groove (410) in a matched mode, the driving block (411) is fixedly connected with the surface of a rotating rod (501), and the rotating rod (501) is in sliding connection with a rotating cylinder (404).
  7. 7. The large-displacement engine crank pulley composite machining device according to claim 1, wherein a matching mechanism (6) for assisting a transverse machining machine (2) and a longitudinal machining machine (3) in machining pulleys is further arranged above the base (1), the matching mechanism (6) comprises a fixing frame (601) fixedly connected with the base (1), a pair of limiting frames (605) are slidably connected below the fixing frame (601), the height of the limiting frames (605) is higher than that of the pulleys when the pulleys are placed above the placement disc (405), and one side, close to the upper side of the pulleys, of the limiting frames (605) is in electric telescopic arrangement.
  8. 8. The large-displacement engine crank pulley composite processing device according to claim 7, wherein a steel wire rope (604) is fixedly connected to one side, close to a pulley, above the limiting frame (605), of the pulley, a protection cylinder (602) is slidably connected to the surface of the steel wire rope (604), a winding drum (603) is connected to the other end of the steel wire rope (604) in a clamping mode, and the winding drum (603) is fixedly connected with a rotating rod (501).
  9. 9. The large-displacement engine crank pulley composite processing device according to claim 8, wherein the protection cylinder (602) is in telescopic arrangement, a sliding groove is formed in a sliding position between the upper part of the limiting frame (605) and the fixing frame (601), the size of the winding drum (603) is smaller than that of a central hole of the pulley, and a pair of limiting frames (605) are symmetrically arranged along the axis of the winding drum (603).
  10. 10. The large-displacement engine crank pulley composite processing device according to claim 3, wherein a collecting bin (7) is arranged on one side of the base (1), the rotary cylinder (404) is arranged in a conical shape, the upper side and the lower side of the sliding column (407) are in sliding clamping connection with the rotary cylinder (404) through sliding plates, and pawl blocks (416) at one end of the sliding column (407) are arranged in an inclined mode.

Description

Large-displacement engine crank pulley composite machining device Technical Field The invention relates to the technical field of intelligent manufacturing equipment industry, in particular to a large-displacement engine crank pulley composite machining device. Background The large-displacement engine crankshaft pulley is a composite functional pulley arranged at the front end of a large-displacement engine crankshaft, and has the core of transmitting power and greatly inhibiting torsional vibration of the crankshaft, and in order to ensure the torsional vibration damping effect and the transmission stability of the pulley during the processing, the pulley is required to be designed with larger diameter and inertia, so that the corresponding pulley is relatively larger in size, if a horizontal processing method is adopted, the pulley is easy to generate elastic deformation and vibration under the action of cutting force due to overlong cantilever and insufficient rigidity caused by larger diameter of a workpiece, the processing precision of a pulley groove is reduced, and the holes and the pulley groove of the pulley cannot be processed accurately and stably, so that the large-displacement engine crankshaft pulley is processed by adopting a vertical processing method generally. In the prior art, when the belt pulley is machined by adopting a vertical machining method, an internal stay clamping method is generally adopted to horizontally fix the belt pulley, then the belt pulley is driven to integrally rotate in the circumferential direction, multiple machining operations can be completed without repeated clamping of the belt pulley when the belt pulley is subjected to composite machining of punching and grooving of peripheral grooves by adopting multiple cutters, moreover, the end face of the belt pulley can be attached to a working table in parallel by adopting the vertical clamping, and the internal stay clamp is matched to uniformly apply force from a central hole, so that the clamping rigidity and the centering are better, the belt pulley can be fully kept stable during rotary machining, the machining efficiency and the qualification rate of finished products can be effectively improved, and the transmission and vibration reduction requirements of high torque and high precision are met; However, when the belt pulley is horizontally placed and the inner side supporting hole is machined, the cutter can be fed downwards in the vertical direction, the cutting force can directly and vertically act on the end face and the central area of the belt pulley, and the whole belt pulley can be subjected to vertical extrusion force from the cutter; And when the peripheral belt groove is machined, the cutter can cut into the belt groove along the radial direction, the cutting force directly acts on the outer edge of the belt pulley along the horizontal direction, the whole belt pulley can also receive the transverse extrusion force from the cutter, under the combined action of the vertical and transverse cutting forces, the belt pulley clamped by the inner support at the bottom can possibly generate end face warping and radial deflection, and the vibration and deformation generated when the large-displacement belt pulley is machined can be more obvious due to the larger diameter and thinner wall hanging of the large-displacement belt pulley, so that the hole in the central area, the coaxiality after the peripheral belt groove is machined and the groove precision of the belt pulley are directly reduced, and the whole machining quality of the large-displacement engine crankshaft belt pulley is affected. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a large-displacement engine crank pulley compound processing device which can solve the problems of vibration and deformation generated after vertical and transverse cutting forces of a cutter are received simultaneously when the large-displacement engine crank pulley is subjected to vertical compound processing. The large-displacement engine crank pulley composite machining device comprises a base, wherein a transverse machining machine and a longitudinal machining machine for machining a pulley are arranged above the base, a gain mechanism for assisting the transverse machining machine and the longitudinal machining machine in machining the pulley is arranged inside the base, the gain mechanism comprises a rotatable rotary drum, a placing disc is fixedly connected above the rotary drum, a expanding block for expanding and clamping the crank pulley is arranged inside the placing disc, a cylindrical cam rod is connected inside the rotary drum in a sliding mode, a connecting sleeve is fixedly connected to the surface of the cylindrical cam rod, a plurality of ejector rods are connected to the outer side of the connecting sleeve in a hinged mode through hinging balls, trapezoidal blocks are connected to the other ends of the ejector rods