CN115815711A - A flange fork milling jig and its operating method - Google Patents

Abstract

The invention provides a flange fork milling jig and an operation method, which includes an indexing base, an indexing mechanism for realizing the indexing rotation of the flange fork during the processing process is installed inside the indexing base, the indexing mechanism and the It cooperates with the locking ratchet plate mechanism; the top of the indexing mechanism is rotatably supported by a rotating seat, and the inside of the rotating seat is provided with a ball hinge clamping mechanism for clamping the flange fork. The ball hinge clamping mechanism and The clamping power mechanism for providing power is connected; the top end of the rotating seat is fixed with a clamp seat for positioning the flange fork. This fixture can be widely used in milling machine tools and is suitable for all flange fork clamping. It is simple to change the fixture, reliable and stable, and is suitable for mass production and processing; it has a high degree of automation; and it can guarantee the processing quality and efficiency by means of milling.

Description

A flange fork milling jig and its operating method

technical field

The invention belongs to the technical field of auto parts processing, and in particular relates to a flange fork tooth milling fixture and an operation method, which are suitable for the flange fork tooth milling process.

Background technique

The flange fork is the main part of the automobile transmission shaft. In the process of processing the upper teeth of the flange fork, the processing technology usually used is tooth broaching, and the indexing accuracy is an important index, and the tooth broaching cannot meet the accuracy requirements; and The broaching process has defects such as large broaching deformation and poor surface quality; moreover, the existing broaching fixtures are complicated to change, poor in stability, and low in automation; and the broaching process is usually only suitable for small batch processing , cannot be used for mass production processing. Milling can overcome the above shortcomings. In order to realize the automatic milling of the teeth on the flange fork, it is necessary to design a special fixture.

Contents of the invention

In order to solve the above technical problems, the present invention provides a flange fork milling jig and its operation method. This jig can be widely used in milling machine tools and is suitable for all flange fork clamping. The jig is simple to change, reliable and stable, and suitable for large quantities. Production processing; high degree of automation; and with the help of milling processing, the processing quality and efficiency can be guaranteed.

In order to achieve the above-mentioned technical features, the object of the present invention is achieved in the following way: a flange fork milling jig, which includes an indexing base, and the inside of the indexing base is installed with a tool for realizing the indexing rotation of the flange fork during processing. Indexing mechanism, the indexing mechanism cooperates with the ratchet plate mechanism for locking; the top of the indexing mechanism is rotatably supported by a rotating seat, and the inside of the rotating seat is provided with a ball hinge clamp for clamping the flange fork The clamping mechanism of the spherical hinge is connected with the clamping power mechanism for providing power; the top of the rotating seat is fixed with a clamp seat for positioning the flange fork.

The indexing mechanism includes a motor fixed on the outer wall of one side of the indexing base. The output shaft of the motor is connected with a worm, and the worm meshes with the worm wheel to form a worm gear pair. The worm wheel is fixed on the outer edge of the worm wheel mounting plate, and the worm wheel mounting plate is fixed on The bottom end of the central cylinder; the top of the central cylinder is fixed with a rotating seat through the first long bolt.

The chirp mechanism includes a chirp, and the chirp cooperates with an indexing cylinder installed inside the indexing base, and the hirth is locked or released by turning on and off the indexing cylinder.

The ball hinge clamping mechanism includes a ball hinge seat fixed on the top of the rotating seat. A ball hinge is symmetrically hinged inside the ball hinge seat. A threaded hole is processed on the top of the ball hinge. The position of the threaded hole is pressed and fixed with a clamp The claws are fixed with arc claws for matching with the flange fork; the bottom end of the ball hinge is connected with the clamping power mechanism for driving its rotation and clamping.

The clamping power mechanism includes a connecting rod hinged at the bottom end of the ball hinge, the other end of the connecting rod is hingedly connected with the tension block, the tension block is fixed on the top of the pull rod through a lock nut, and the bottom end of the pull rod is connected with the tension cylinder. The ends of the piston rod are fixedly connected, and the tension cylinder is fixed on the bottom end of the oil cylinder base by the second long bolt, and the oil cylinder base is fixed on the bottom end of the worm gear mounting plate of the indexing mechanism by bolts.

The pull rod is matched with the pull rod guiding mechanism, and the pull rod guiding mechanism includes a guide groove processed on the outer wall of the pull rod, and the guide groove cooperates with the key, and the key is fixedly installed in the center hole of the rotating seat.

The clamp seat is positioned on the top of the ball hinge seat through the first cylindrical pin and the first rhombic pin, and is fixed by bolts.

When clamping, the flange fork is positioned on the clamp seat through the second cylindrical pin and the second diamond pin.

The indexing mechanism adopts a rack and pinion rotary mechanism in which the oil cylinder pushes the rack to drive the gear to rotate.

The operation method of flange fork processing using a flange fork milling jig:

Step 1, positioning of the flange fork:

The flange fork to be processed is positioned on the fixture seat through the second cylindrical pin and the second diamond pin;

Step 2, clamping of the flange fork:

Start the clamping power mechanism, drive the pull rod through the tension cylinder, drive the tension block through the pull rod, drive the connecting rod synchronously through the tension block, drive the ball hinge to rotate through the connection rod, and the ball hinge drives the jaw on the top to the flange fork Clamping and fixing;

Step 3, milling of flange fork:

After the flange fork is clamped and fixed, start the milling machine to mill the flange fork;

Step 4, indexing rotation of the flange fork:

During the milling process of the flange fork, when the indexing rotation is required, oil is supplied to the indexing cylinder of the ratchet mechanism, the ratchet mechanism is released, the motor of the indexing mechanism is started, the worm is driven by the motor, and the worm is driven by the worm. The worm gear drives the central cylinder through the worm gear, drives the rotating seat at the top synchronously through the central cylinder, and then drives the fixture seat and the flange fork on the top to rotate synchronously through the rotating seat;

Step five, locking of the indexing mechanism:

After the indexing rotation is completed, oil is supplied to the indexing oil cylinder of the ratchet mechanism, and the ratchet is locked, so as to realize the locking and fixing of the rotating seat, and then continue to mill the teeth of the flange fork.

The present invention has following beneficial effect:

1. The fixture of the present invention can be widely used in milling machine tools and is suitable for clamping of all flange forks. The fixture is simple to change, reliable and stable, and is suitable for mass production and processing; the degree of automation is high; and the processing quality and efficiency can be guaranteed by means of milling .

2. The indexing operation can be realized through the above-mentioned indexing mechanism, and then the indexing of the flange fork can be realized.

3. Through the above-mentioned ratchet mechanism, the locking and fixing of the rotating seat can be realized.

4. The ball hinge clamping mechanism can be used to clamp and fix the flange fork.

5. The clamping power mechanism can be used to provide clamping power for the ball joint clamping mechanism.

Description of drawings

The present invention will be further described below in conjunction with drawings and embodiments.

Fig. 1 is a main sectional view of the present invention.

Figure 2 is a three-dimensional view of the present invention.

Fig. 3 is a front view of the jaw of the present invention.

In the figure: indexing base 1, rotating seat 2, motor 3, fixture seat 4, first cylindrical pin 5, second cylindrical pin 6, flange fork 7, arc claw 8, screw cap 9, threaded hole 10, clamping claw 11. Ball hinge 12, ball hinge seat 13, connecting rod 14, lock nut 15, tension block 16, guide groove 17, pull rod 18, key 19, first long bolt 20, central cylinder 21, mouse tooth plate 22, Indexing oil cylinder 23, worm screw 24, worm wheel 25, worm wheel mounting plate 26, oil cylinder base 27, tension oil cylinder 28, the second long bolt 29.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

Example 1:

Referring to Figures 1-3, a flange fork milling jig includes an indexing base 1. An indexing mechanism is installed inside the indexing base 1 to realize indexing and rotation of the flange fork during processing. The indexing mechanism and The ratchet plate mechanism for locking is matched; the top of the indexing mechanism is rotatably supported by a swivel seat 2, and the interior of the swivel seat 2 is provided with a ball hinge clamping mechanism for clamping the flange fork. The tightening mechanism is connected with the clamping power mechanism for providing power; the top end of the rotating seat 2 is fixed with a clamp seat 4 for positioning the flange fork. This fixture can be widely used in milling machine tools and is suitable for all flange fork clamping. It is simple to change the fixture, reliable and stable, and is suitable for mass production and processing; it has a high degree of automation; and it can guarantee the processing quality and efficiency by means of milling. In the specific use process, the flange fork 7 to be processed is positioned and installed on the fixture seat 4, and the ball hinge clamping mechanism is driven by the clamping power mechanism to reliably clamp and fix the flange fork 7, and its clamping is fast It is convenient, and after the clamping is completed, the milling machine is started to mill the flange fork 7, and during the milling process, the indexing operation is performed by the indexing mechanism.

Further, the indexing mechanism includes a motor 3 fixed on the outer wall of one side of the indexing base 1, the output shaft of the motor 3 is connected with a worm 24, and the worm 24 meshes with the worm wheel 25 to form a worm gear pair, and the worm wheel 25 is fixed on the The outer edge of the disc 26 and the worm gear mounting disc 26 are fixed on the bottom of the central cylinder 21; The indexing operation can be realized through the above-mentioned indexing mechanism, and then the indexing of the flange fork 7 can be realized. During the working process, when the fixture seat 4 needs to be indexed, start the motor 3, drive the worm 24 through the motor, drive the worm gear 25 through the worm 24, drive the worm gear mounting plate 26 through the worm gear 25, and drive the center cylinder synchronously through the worm gear mounting plate 26 21 rotates, and then the rotating seat 2 on its top is driven by the central cylinder 21 to rotate.

Further, the chirp mechanism includes a chirp plate 22, and the chirp plate 22 cooperates with the indexing cylinder 23 installed inside the indexing base 1, and the ratchet plate is realized by switching the indexing cylinder 23 on and off. Locking or loosening of disc 22. The locking and fixing of the rotating seat 2 can be realized by the above-mentioned Hirth mechanism. During the working process, the locking and fixing of the hirth disc 22 is controlled by the oil on and off of the indexing oil cylinder 23, so as to achieve the purpose of locking the rotating seat 2.

Further, the ball hinge clamping mechanism includes a ball hinge seat 13 fixed on the top of the rotating seat 2, the ball hinge seat 13 is symmetrically hinged with a ball hinge 12 inside, the top of the ball hinge 12 is processed with a threaded hole 10, and the threaded hole 10 The position is pressed and fixed by the screw cover 9, and the clamping claw 11 is fixed on the clamping claw 11, and the arc claw 8 for matching with the flange fork is fixed on the clamping claw 11; the bottom end of the ball hinge 12 is connected with the clamping power for driving its rotation and clamping institutions connected. The ball hinge clamping mechanism can be used to clamp and fix the flange fork 7 . During the working process, the ball hinge 12 is driven to rotate by the clamping power mechanism, and then the clamping claw 11 and the arc claw 8 at the top of the ball hinge 12 are in contact with the bottom end of the flange fork 7, thereby realizing its clamping and fixing.

Further, the clamping power mechanism includes a connecting rod 14 hinged at the bottom end of the ball joint 12, the other end of the connecting rod 14 is hingedly connected with the tensioning block 16, and the tensioning block 16 is fixed on the top of the pull rod 18 through a locking nut 15 , the bottom end of the pull rod 18 is fixedly connected with the end of the piston rod of the tension cylinder 28, the tension cylinder 28 is fixed on the bottom end of the cylinder base 27 by the second long bolt 29, and the cylinder base 27 is fixed on the worm gear of the indexing mechanism by bolts. Disc 26 bottom. The clamping power mechanism can be used to provide clamping power to the ball joint clamping mechanism. During the working process, the piston rod is driven by the tightening cylinder 28, the pull rod 18 is driven by the piston rod, the tension block 16 is driven by the pull rod 18, and the connecting rod 14 is synchronously driven by the tension block 16, and the ball hinge 12 is driven by the connecting rod 14 turn.

Further, the pull rod 18 cooperates with the pull rod guide mechanism, the pull rod guide mechanism includes a guide groove 17 processed on the outer wall of the pull rod 18, the guide groove 17 cooperates with the key 19, and the key 19 is fixedly installed in the center of the rotating seat 2 Hole part. Through the above-mentioned pull rod guiding mechanism, it is ensured that the pull rod 18 does not rotate during the lifting action, and then the clamping power mechanism is stably driven to realize the clamping action.

Further, the clamp seat 4 is positioned on the top end of the spherical hinge seat 13 through the first cylindrical pin 5 and the first rhombic pin, and is fixed by bolts. The positioning and clamping of the clamp seat 4 can be realized by the above-mentioned first cylindrical pin 5 and the first rhombic pin.

Further, when clamping, the flange fork 7 is positioned on the clamp seat 4 through the second cylindrical pin 6 and the second diamond pin. The positioning and clamping of the flange fork 7 can be realized by the above-mentioned second cylindrical pin 6 and the second rhombic pin.

Example 2:

The indexing mechanism adopts a rack and pinion rotary mechanism in which the oil cylinder pushes the rack to drive the gear to rotate.

Example 2:

The operation method of flange fork processing using a flange fork milling jig:

Step 1, positioning of flange fork 7:

The flange fork 7 to be processed is positioned on the clamp seat 4 by the second cylindrical pin 6 and the second diamond pin;

Step 2, clamping of flange fork 7:

Start the clamping power mechanism, drive the pull rod 18 through the tension cylinder 28, drive the tension block 16 through the pull rod 18, drive the connecting rod 14 synchronously through the tension block 16, drive the ball hinge 12 to rotate through the connection rod 14, and be driven by the ball hinge 12 The jaws 11 on the top are clamped and fixed to the flange fork 7;

Step 3, milling process of flange fork 7:

After the flange fork 7 is clamped and fixed, the milling machine is started to mill the flange fork 7;

Step 4, indexing rotation of flange fork 7:

During the tooth milling process of the flange fork 7, when the indexing rotation is required, oil is supplied to the indexing cylinder 23 of the ratchet mechanism, the ratchet plate 22 is released, the motor 3 of the indexing mechanism is started, and the motor 3 drives The worm 24 drives the worm gear 25 through the worm gear 24, drives the central cylinder 21 through the worm gear 25, drives the rotating seat 2 at the top synchronously through the central cylinder 21, and then drives the clamp seat 4 and the flange fork 7 at the top to rotate synchronously through the rotating seat 2 ;

Step five, locking of the indexing mechanism:

After the indexing rotation is completed, the indexing oil cylinder 23 of the ratchet mechanism is oiled, and the ratchet plate 22 is locked, so as to realize the locking and fixing of the rotating seat 2, and then continue to mill the teeth of the flange fork 7.

Claims (10)

1. A flange fork milling jig, characterized in that it includes an indexing base (1), and an indexing mechanism is installed inside the indexing base (1) for realizing the indexing rotation of the flange fork during processing, The indexing mechanism cooperates with the ratchet mechanism for locking; the top of the indexing mechanism is rotatably supported by a rotating seat (2), and the interior of the rotating seat (2) is provided with a ball for clamping the flange fork A hinge clamping mechanism, the spherical hinge clamping mechanism is connected with the clamping power mechanism for providing power; the top end of the rotating seat (2) is fixed with a clamp seat (4) for positioning the flange fork. 2. A flange fork milling jig according to claim 1, characterized in that: the indexing mechanism includes a motor (3) fixed on the outer wall of one side of the indexing base (1), and the motor (3) The output shaft is connected with a worm (24), and the worm (24) meshes with the worm gear (25) to form a worm gear pair. The worm gear (25) is fixed on the outer edge of the worm gear mounting plate (26), and the worm gear mounting plate (26) is fixed on the central cylinder The bottom end of (21); the top of the central tube (21) is fixedly installed with a rotating seat (2) by the first long bolt (20). 3. A flange fork milling jig according to claim 1, characterized in that: the chirp mechanism includes a chirp (22), and the chirp (22) is installed on the indexing base ( 1) The internal indexing cylinder (23) cooperates, and the locking or loosening of the Hirth plate (22) is realized through the switching of the indexing cylinder (23). 4. A flange fork milling jig according to claim 1, characterized in that: the ball joint clamping mechanism includes a ball joint seat (13) fixed on the top of the rotating seat (2), the ball joint seat (13) ) is internally symmetrically hinged with a ball hinge (12), and the top of the ball hinge (12) is processed with a threaded hole (10). The claw (11) is fixed with an arc claw (8) for matching with the flange fork; the bottom end of the ball hinge (12) is connected with a clamping power mechanism for driving it to rotate and clamp. 5. A flange fork milling jig according to claim 1, characterized in that: the clamping power mechanism includes a connecting rod (14) hinged at the bottom end of the ball joint (12), and the other connecting rod (14) One end is hingedly connected with the tension block (16), the tension block (16) is fixed on the top of the pull rod (18) through the lock nut (15), and the bottom end of the pull rod (18) is connected with the piston rod of the tension cylinder (28). The ends are fixedly connected, and the tension cylinder (28) is fixed on the bottom of the oil cylinder base (27) through the second long bolt (29), and the oil cylinder base (27) is fixed on the bottom of the worm gear mounting plate (26) of the indexing mechanism through bolts . 6. A flange fork milling jig according to claim 5, characterized in that: the tie rod (18) cooperates with a tie rod guide mechanism, and the tie rod guide mechanism includes guides processed on the outer wall of the tie rod (18) Groove (17), guide groove (17) matches with key (19), and key (19) is fixedly installed in the central hole position of rotating seat (2). 7. A flange fork milling jig according to claim 4, characterized in that: the jig seat (4) is positioned on the spherical hinge seat (13) by the first cylindrical pin (5) and the first rhombic pin top and secured with bolts. 8. A flange fork milling jig according to claim 1, characterized in that: when clamping, the flange fork (7) is positioned on the clamp seat (4) by the second cylindrical pin (6) and the second rhombic pin )superior. 9. A flange fork milling jig according to claim 1, characterized in that: the indexing mechanism adopts a rack and pinion rotary mechanism in which an oil cylinder pushes a rack to drive the gear to rotate. 10. The operation method of processing the flange fork by using a flange fork milling jig according to any one of claims 1-8, characterized in that: Step 1, positioning of the flange fork (7): Position the flange fork (7) to be processed on the fixture seat (4) through the second cylindrical pin (6) and the second diamond pin; Step 2, clamping of the flange fork (7): Start the clamping power mechanism, drive the pull rod (18) through the tension cylinder (28), drive the tension block (16) through the pull rod (18), drive the connecting rod (14) synchronously through the tension block (16), and drive the connecting rod (14) through the connecting rod (14) Drive the ball hinge (12) to rotate, and the ball hinge (12) drives the jaw (11) on the top to clamp and fix the flange fork (7); Step 3, milling of flange fork (7): After the flange fork (7) is clamped and fixed, start the milling machine to mill the flange fork (7); Step 4, indexing rotation of the flange fork (7): During the tooth milling process of the flange fork (7), when indexing rotation is required, oil is supplied to the indexing cylinder (23) of the ratchet plate mechanism, and the ratchet plate (22) is released to start the motor of the indexing mechanism (3), drive the worm (24) through the motor (3), drive the worm gear (25) through the worm (24), drive the center cylinder (21) through the worm gear (25), and drive the rotation of its top synchronously through the center cylinder (21) Seat (2), and then drive the fixture seat (4) and flange fork (7) on the top to rotate synchronously through the rotating seat (2); Step five, locking of the indexing mechanism: After the indexing rotation is completed, oil is supplied to the indexing cylinder (23) of the ratchet plate mechanism, and the ratchet plate (22) is locked, so as to realize the locking and fixing of the rotating seat (2), and then continue to adjust the flange fork ( 7) Carry out milling processing.

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