CN201168837Y - CNC Rack Milling Machine - Google Patents

Abstract

CNC rack gear milling machine, the Z-direction bed (1) and X-direction bed (14) are spliced into a T-shape, the X-direction large carriage (12) is movably installed on the X-direction bed (14), and the X-direction The ball screw (17) is installed in the X-direction bed (14), the X-direction servo motor (15) is installed on the right side of the X-direction bed (14), and the X-direction synchronous rack pulley (13) is connected Between the X-direction servo motor (15) and the X-direction ball screw (17), the X-direction ball screw nut (23) is fixedly installed on the X-direction large carriage (12), which can be used on the X-direction ball screw (17) moves left and right; the compression screw (11) is installed above the X-direction large carriage (12); the Z-direction carriage (3), the Y-direction small carriage (4) and other components are similar to the X-direction installation; The system (16) is fixedly mounted on the bed (14). Compared with the existing rack machine, the indexing accuracy of the utility model is obviously improved, and it can automatically cut and index, has low labor intensity, and greatly saves labor cost.

Description

CNC Rack Milling Machine

technical field

The invention relates to a gear milling machine, in particular to a numerically controlled rack gear milling machine.

Background technique

The existing rack machine is transformed from a milling machine. According to the racks of different modulus, the ratio of the hanging wheels is calculated, and the indexing is driven by the hanging wheels. The labor intensity is high, the efficiency is low, the indexing accuracy is poor, and the processing length is limited. . At present, the diameter of milling cutters of similar machine tools of many domestic manufacturers is about 180 mm, which not only increases the difficulty of cutting, but also increases the cost of using the cutters.

Contents of the invention

The technical problem to be solved by the invention is: aiming at the above shortcomings of the same kind of machine tools of many domestic manufacturers at present, to provide a kind of indexing which utilizes a numerical control system, cooperates with a servo motor and a high-precision ball screw, and the indexing accuracy is better than that of the existing rack. CNC rack gear milling machine with significantly improved machine, automatic cutting, automatic indexing, and low labor intensity.

The technical solution created by the present invention is: a CNC rack gear milling machine, including a Z-direction bed, a Z-direction servo motor, a Z-direction carriage, a Y-direction small carriage, a Y-direction servo motor, a frequency conversion motor, and a synchronous Toothed belt pulley, cutter shaft housing, milling cutter, compression screw, X-direction large carriage, X-direction synchronous rack pulley, X-direction bed, X-direction servo motor, CNC system, X-direction ball screw, Z ball screw, support, y ball screw, y ball screw nut, y ball screw nut and x ball screw nut.

The Z-direction bed and the X-direction bed are spliced into a T-shape, and the X-direction large carriage is movably installed above the X-direction bed (the X-direction large carriage can be indexed and moved left and right in the X direction), and the X-direction ball screw is installed In the X-direction bed, the X-direction servo motor is installed on the right side of the X-direction bed, the X-direction synchronous rack pulley is connected between the X-direction servo motor and the X-direction ball screw, and the X-direction ball screw nut is Fixedly installed on the X-direction large carriage, it can move left and right on the X-direction ball screw; the compression screw is installed above the X-direction large carriage, and the workpiece is fixed on the X-direction large carriage by the compression screw; Z direction The carriage is movably installed above the Z-direction bed (can move back and forth in the Z direction), the Z-direction ball screw is installed in the Z-direction bed, the Z-direction servo motor is connected to the right side of the Z-direction ball screw, and is Fixed on the side of the Z-direction bed, the Z-direction ball screw nut is fixedly installed on the Z-direction large carriage, which can move back and forth on the Z-direction ball screw, the support is installed above the Z-direction carriage, and the Y The ball screw in the Y direction is fixed in the support, the servo motor in the Y direction is connected above the ball screw in the Y direction, the small carriage in the Y direction is movably installed on the right side of the support, and the ball screw nut in the Y direction is fixedly installed on the Y direction. On the small carriage, it can move up and down on the Y-direction ball screw. The cutter shaft box is fixedly installed on the Y-direction small carriage. The frequency conversion speed regulating motor is installed on the cutter shaft box. Between the cutter shaft box and the frequency conversion speed regulating motor, the milling cutter is installed under the cutter shaft box; the numerical control system is fixedly installed on the bed.

The present invention creates a rack gear milling machine that controls the X-direction servo motor, Y-direction servo motor, Z-direction servo motor and frequency conversion speed regulating motor by the numerical control system to complete the cutting and indexing process, also known as three-axis three-linkage (X-axis, Y axis, Z axis). The X-direction servo motor drives the X-direction ball screw through the X-direction synchronous rack pulley, which drives the X-direction large carriage to perform indexing motion (commonly known as the tooth division process), and the Z-direction servo motor drives the Z-direction to the ball screw. The carriage makes cutting movement; the Y-direction servo motor drives the Y-direction small carriage and the cutter shaft box connected to it to move up and down through the Y-direction ball screw, controlling the cutting depth (that is, the depth of the tooth shape) and the retraction function. ;The role of the X-direction ball screw nut, the Y-direction ball screw nut and the Z-direction ball screw nut is to change the circular motion of each ball screw into a linear motion; The wheel and the cutter shaft box are transmitted to the milling cutter, so that the milling cutter rotates counterclockwise to perform cutting work; the milling cutter can be replaced according to the processing requirements of racks with different modules; the change of cutting parameters is completed by the numerical control system ; The precision of the X-direction ball screw and the X-direction servo motor is the key to determine the accuracy of the rack processing indexing.

The invention uses a numerical control system, cooperates with a servo motor and a high-precision ball screw for indexing, and the indexing accuracy is significantly higher than that of the existing rack machine. It can automatically cut, automatically index, and has low labor intensity, which greatly saves labor costs.

The rack gear milling machine created by the invention has a great advantage in cost performance compared with similar imported machine tools. Although the production efficiency of this machine tool is 1/4 of that of Japanese imported machine tools, its price is 1/10 of that of Japanese imported machine tools. The cost performance is more than twice that of Japanese machine tools, and it is the first choice to replace Japanese imported machine tools.

The diameter of the milling cutter used in the invention is not more than 130 millimeters, which reduces the cost of using the milling cutter and reduces the difficulty of cutting processing, which is beneficial to reducing the cost of the export rack and improving its competitiveness.

Description of drawings

Accompanying drawing 1 is the schematic diagram of the front view of the structure of the present invention

Accompanying drawing 2 is the right view schematic diagram of the structure of the present invention

Accompanying drawing 3 is the schematic top view of the structure of the present invention

Detailed ways

The present invention is described in conjunction with the accompanying drawings.

A CNC rack gear milling machine, including a Z-direction bed 1, a Z-direction servo motor 2, a Z-direction carriage 3, a Y-direction small carriage 4, a Y-direction servo motor 5, a frequency conversion speed regulation motor 6, and a synchronous toothed belt Wheel 7, cutter shaft box 8, milling cutter 9, compression screw 11, X-direction large carriage 12, X-direction synchronous rack pulley 13, X-direction bed 14, X-direction servo motor 15, CNC system 16, X direction ball screw 17, Z direction ball screw 18, support 19, Y direction ball screw 20, Y direction ball screw nut 21, Y direction ball screw nut 22 and X direction ball screw nut 23 nuts.

The Z-direction bed 1 and the X-direction bed 14 are spliced into a T-shape, and the X-direction large carriage 12 is movably installed above the X-direction bed 14 (the X-direction large carriage 12 can be indexed and moved left and right in the X direction), and the X-direction The ball screw 17 is installed in the X direction bed 14, the X direction servo motor 15 is installed on the right side of the X direction bed 14, and the X direction synchronous rack pulley 13 is connected between the X direction servo motor 15 and the X direction ball Between the screw 17, the X-direction ball screw nut 23 is fixedly installed on the X-direction large carriage 12, and can move left and right on the X-direction ball screw 17; the compression screw 11 is installed on the X-direction large carriage 12 Above, the workpiece 10 is fixed on the X-direction large carriage 12 by the compression screw 11; the Z-direction carriage 3 is movably installed above the Z-direction bed 1 (can move back and forth in the Z direction), and the Z-direction ball screw 18 is Installed in the Z-direction bed 1, the Z-direction servo motor 2 is connected to the right side of the Z-direction ball screw 18, and is fixed on the side of the Z-direction bed 1, and the Z-direction ball screw nut 22 is fixedly installed on the On the Z-direction large carriage 3, it can move back and forth on the Z-direction ball screw 18, the support 19 is installed above the Z-direction carriage 3, the Y-direction ball screw 20 is fixed in the support 19, and the Y-direction servo The motor 5 is connected above the Y-direction ball screw 20, the Y-direction small carriage 4 is movably installed on the right side of the support 19, and the Y-direction ball screw nut 21 is fixedly installed on the Y-direction small carriage 4. The Y-direction ball screw 20 moves up and down, the cutter shaft case 8 is fixedly installed on the Y-direction small carriage 4, the frequency conversion speed regulating motor 6 is installed on the cutter shaft case 8, and the synchronous toothed belt wheel 7 is connected to the cutter shaft Between the box body 8 and the variable frequency speed regulating motor 6 , the milling cutter 9 is installed under the cutter shaft box body 8 ; the numerical control system 16 is fixedly installed on the bed 14 .

The invention creates a rack gear milling machine that controls the X-direction servo motor 15, Y-direction servo motor 5, Z-direction servo motor 2 and frequency conversion speed regulation motor 6 to complete the cutting process and indexing process by the numerical control system, also known as three-axis three-linkage (X axis, Y axis, Z axis). The X-direction servo motor 15 drives the X-direction ball screw 17 through the X-direction synchronous rack pulley 13, and drives the X-direction large carriage 12 to perform indexing motion (commonly known as the tooth division process), and the Z-direction servo motor 2 passes through the ball The screw 18 drives the Z-direction carriage 3 to make the cutting movement; the Y-direction servo motor 5 drives the Y-direction small carriage 4 and the cutter shaft box 8 connected to it to move up and down through the Y-direction ball screw 20 to control the cutting. Depth (i.e. tooth profile depth) and tool retraction; the function of the X-direction ball screw nut 23, the Y-direction ball screw nut 21 and the Z-direction ball screw nut 22 is to change the circular motion of each ball screw into a linear motion The power of the frequency conversion speed regulation motor 6 transmits the power of the circular motion to the milling cutter 9 through the synchronous toothed belt wheel 7 and the cutter shaft box 8, so that the milling cutter 9 rotates counterclockwise to perform cutting work 10; the milling cutter 9 can Change according to the rack processing requirements of different modulus; the change of cutting parameters is completed by the numerical control system 16; the accuracy of the X-direction ball screw 17 and the X-direction servo motor 15 is the key to determine whether the rack processing is accurate or not.

The invention utilizes the numerical control system, cooperates with the servo motor and high-precision ball screw for indexing, and the indexing accuracy is 3 to 5 levels higher than that of the existing rack machine. It can automatically cut and index, and the labor intensity is low. One operation Workers can operate 4 machine tools at the same time, which greatly saves labor costs.

The diameter of the milling cutter adopted by the present invention is no more than 130 millimeters, and the price of the milling cutter with a diameter of more than 130 millimeters will increase exponentially. At present, the diameter of milling cutters of similar machine tools of many domestic manufacturers is about 180 mm, which not only increases the difficulty of cutting, but also increases the cost of cutting tools, which is very unfavorable for the cost requirements of export racks.

Claims (1)

1. numerical control rack gear milling machine, it is characterized in that: described numerical control rack gear milling machine comprises Z to lathe bed (1), and Z is to servomotor (2), Z is to planker (3), and Y is to upper slide rest (4), and Y is to servomotor (5), frequency control motor (6), synchronous toothed belt wheel (7), cutter shaft casing (8), milling cutter (9), housing screw (11), X is to saddle (12), and X is to synchronous tooth bar belt wheel (13), and X is to lathe bed (14), X is to servomotor (15), digital control system (16), X is to ball-screw (17), and Z is to ball-screw (18), bearing (19), Y is to ball-screw (20), and Y is to ball-screw nut (21), Y to ball-screw nut (22) and X to ball-screw (23) nut; Z is spliced into T-shaped to lathe bed (1) and X to lathe bed (14), X is movably arranged on X to lathe bed (14) top to saddle (12), can be at directions X left and right sides dividing movement, X is installed in X in lathe bed (14) to ball-screw (17), X is installed in the right side of X to lathe bed (14) to servomotor (15), X to synchronous tooth bar belt wheel (13) be connected X to servomotor (15) and X between ball-screw (17), X is fixedly installed to X on saddle (12) to ball-screw nut (23), can go up move left and right to ball-screw (17) at X; Housing screw (11) is installed in X to saddle (12) top; Z is movably arranged on Z to lathe bed (1) top to planker (3), can move back and forth in the Z direction, Z is installed in Z in lathe bed (1) to ball-screw (18), Z is connected Z to the right side of ball-screw (18) to servomotor (2), and be fixed on Z on lathe bed (1) side, Z is fixedly installed to Z on saddle (3) to ball-screw nut (22), can before and after going up, move by ball-screw (18) at Z, bearing (19) is installed in Z to planker (3) top, Y is in ball-screw (20) is fixed on bearing (19), Y is connected Y to ball-screw (20) top to servomotor (5), Y is movably arranged on bearing (19) right side to upper slide rest (4), Y is fixedly installed to Y on upper slide rest (4) to ball-screw nut (21), can above ball-screw (20), move up and down at Y, cutter shaft casing (8) is fixedly mounted on Y on upper slide rest (4), frequency control motor (6) is installed on the cutter shaft casing (8), synchronous toothed belt wheel (7) is connected between cutter shaft casing (8) and the frequency control motor (6), and milling cutter (9) is installed in the below of cutter shaft casing (8); Digital control system (16) is fixedly installed on the lathe bed (14).

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