A processing method for aligning the tooth tip phase of a multi-joint herringbone gear of a press

Abstract

The present invention relates to a processing method for aligning the tooth tip phase of a multi-link herringbone gear of a press. The multi-link herringbone gear comprises a duplex gear and an intermediate gear, the duplex gear is arranged on a gear milling machine workbench, an L-shaped supporting bracket is also arranged on the gear milling machine workbench, the duplex gear comprises an upper tooth and a lower tooth, the lower tooth is arranged in the L-shaped supporting bracket, a connecting flange is arranged between the upper tooth and the lower tooth, an auxiliary keyway for centering process is arranged on the connecting flange, the intermediate gear is connected to the duplex gear by bolts and pins, two φ6 pin holes are processed at the tooth top of the upper tooth, and two φ6 pin holes are processed at the tooth top of the lower tooth. The present invention realizes that the duplex gear and the intermediate gear are both herringbone gears, and the duplex gear and the intermediate gear are used as an integral component to achieve the reference tooth tip alignment of the three groups of teeth during processing.

Description

Technical Field

[0001] The invention relates to a processing method for aligning the tooth tip phase of a multi-link herringbone gear of a press. Background Art

[0002] At present, when four-point presses are driven by four single eccentric gears, two double gear shafts are required for driving connection; traditional presses all use spur gear structure, and the double gears are connected with the middle gear through a hook key during assembly to form a whole. The phase error at both ends of the double gear during processing, the phase error of the middle gear reference gear, the error during assembly, the noise caused by the spur gear drive and the inadaptability to heavy-load and high-speed occasions will affect the overall accuracy and service life of the press. Summary of the invention

[0003] The object of the present invention is to provide a processing method for the tooth tip phase alignment of a press multi-link herringbone gear, by which the double gears and the intermediate gears are both herringbone gears and the double gears and the intermediate gears are used as an integral component to achieve the reference tooth tip alignment of the three groups of teeth during processing.

[0004] The technical solution of the present invention is: a processing method for aligning the tooth tip phase of a multi-link herringbone gear of a press machine, the multi-link herringbone gear comprises a double gear and an intermediate gear, the double gear is arranged on a gear milling machine workbench, an L-shaped supporting bracket is also arranged on the gear milling machine workbench, the double gear comprises an upper tooth and a lower tooth, the lower tooth is arranged in the L-shaped supporting bracket, a connecting flange is arranged between the upper tooth and the lower tooth, a centering process auxiliary keyway is arranged on the connecting flange, the intermediate gear is connected to the double gear by bolts and pins, two φ6 pin holes are processed at the tooth top of the upper tooth, and two φ6 pin holes are processed at the tooth top of the lower tooth.

[0005] The processing method comprises the following steps:

[0006] (1) Before milling the herringbone gears, grind the outer circle of the duplex gear, the outer circle of the connecting flange and the end face respectively, and control the coaxiality and outer circle axis of the duplex gear and the connecting flange, and the perpendicularity with the end face of the connecting flange shall not exceed 0.02mm;

[0007] (2) On the outer circle of the connecting flange, according to the outer circle of the upper and lower teeth of the duplex gear and the outer circle generatrix of the connecting flange, the auxiliary keyway of the centering process is milled for centering alignment when milling the teeth. The keyway is still aligned when the milling teeth are switched up and down to ensure that the tooth tips of the upper and lower teeth of the duplex gear coincide with each other;

[0008] (3) After milling the herringbone teeth of the duplex gear, calculate the angle of half a tooth according to the number of teeth, rotate the gear milling machine table left and right, and drill two φ6 pin holes on the two tooth tops of the upper and lower teeth respectively. The centers of the two tooth top pin holes on the upper teeth are aligned with the upper tooth tips, and the two tooth top pin holes on the lower teeth are aligned with the lower tooth tips;

[0009] (4) Assemble the intermediate gear and the duplex gear by bolts and pins, calibrate the center of the pin holes at the upper and lower ends of the duplex gear, and take the middle value as the center of the tooth tip when milling the herringbone gear on the intermediate gear.

[0010] The beneficial effects of the present invention are:

[0011] (1) Solved the difficulty of machining the center alignment of the tooth tips of the three groups of teeth of the multi-link herringbone gear;

[0012] (2) It can meet the high strength, service life and overall precision requirements of large tonnage, high speed and heavy load presses;

[0013] (3) Move the key assembly process forward and achieve higher precision requirements for key components of the press through processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention.

[0015] Figure 2 It is a schematic diagram of the assembly structure of the present invention.

[0016] Figure 3 yes Figure 1 Enlarged schematic diagram at point A in the middle.

[0017] Figure 4 yes Figure 1 Enlarged schematic diagram of point B in the middle.

[0018] In the figure, 1 is a duplex gear, 2 is an upper tooth, 3 is an L-shaped supporting bracket, 4 is a lower tooth, 5 is a milling machine table, 6 is a lower tooth pin hole, 7 is a centering process auxiliary keyway, 8 is an upper tooth pin hole, and 9 is an intermediate gear. DETAILED DESCRIPTION

[0019] A processing method for aligning the tooth tip phase of a multi-link herringbone gear of a press, the multi-link herringbone gear comprising a double gear 1 and an intermediate gear 9, the double gear 1 being arranged on a gear milling machine workbench 5, the gear milling machine workbench 5 being further provided with an L-shaped supporting bracket 3, the double gear 1 comprising an upper tooth 2 and a lower tooth 4, the lower tooth 4 being arranged in the L-shaped supporting bracket 3, a connecting flange being arranged between the upper tooth 2 and the lower tooth 4, the connecting flange being provided with a centering process auxiliary keyway 7, the intermediate gear 9 being connected to the double gear 1 by bolts and pins, the tooth top of the upper tooth 2 being processed with two φ6 pin holes, the tooth top of the lower tooth 4 being processed with two φ6 pin holes;

[0020] The processing method comprises the following steps:

[0021] (1) Before milling the herringbone gears, grind the outer circle of the duplex gear 1, the outer circle of the connecting flange and the end face respectively, and control the coaxiality and the outer circle axis of the duplex gear 1 and the outer circle of the connecting flange, and the perpendicularity with the end face of the connecting flange shall not exceed 0.02mm;

[0022] (2) On the outer circle of the connecting flange, according to the outer circle of the upper teeth 2 and the lower teeth 4 of the duplex gear and the outer circle generatrix of the connecting flange, the auxiliary keyway 7 of the centering process is milled for centering alignment when milling the teeth. When the milling teeth are switched up and down, the keyway 7 is still used for alignment to ensure that the tooth tips of the upper teeth 2 and the lower teeth 4 of the duplex gear coincide with each other;

[0023] (3) According to Figure 1 The workpiece is clamped as shown for gear milling. After the herringbone teeth of the duplex gear 1 are milled, the angle of half a tooth is calculated according to the number of teeth, the gear milling machine table 5 is rotated left and right, and two φ6 pin holes are respectively punched on the two tooth tops of the upper tooth 2 and the lower tooth 4. The centers of the two tooth top pin holes on the upper tooth 2 are aligned with the upper tooth tip, and the two tooth top pin holes on the lower tooth 4 are aligned with the lower tooth tip. When the gear milling is switched up and down, two cylindrical pins with a diameter of 6 mm are inserted into the lower tooth pin holes 6, and the gear milling is centered by aligning the auxiliary keyway 7 through the centering process. At the same time, the angle center of the two cylindrical pins of the lower tooth 4 is rechecked to ensure that the tooth tips of the upper tooth 2 and the lower tooth 4 of the duplex gear 1 coincide after processing. After the gear is milled, two φ6 upper tooth pin holes 8 are also processed at the tooth top of the upper tooth 2.

[0024] (4) Assemble the intermediate gear 9 and the duplex gear 1 with bolts and pins. Since the intermediate gear 9 will cover the auxiliary keyway 7 of the centering process after assembly, it is impossible to align the intermediate gear 9 when milling the herringbone teeth. Therefore, it is necessary to insert φ6 cylindrical pins into the four tooth top pin holes processed after the duplex gear 1 is milled in the previous step for subsequent alignment.

[0025] (5) In accordance with Figure 2The workpiece is clamped as shown to mill the middle teeth, and the centers of the pin holes at the upper and lower ends of the duplex gear 1 are corrected. The angle center of the upper tooth pin hole 8 is calculated first, and then the angle center of the lower tooth pin hole 6 is calculated. The middle value of the upper and lower pin holes is taken as the center of the tooth tip when the middle gear 9 is milling the herringbone teeth.

[0026] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0028] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can all be customized according to the description and the drawings.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for processing the tooth tip phase alignment of a multi-link herringbone gear of a press machine, the multi-link herringbone gear comprising a double gear (1) and an intermediate gear (9), the double gear (1) being arranged on a gear milling machine workbench (5), the gear milling machine workbench (5) being further provided with an L-shaped supporting bracket (3), the double gear (1) comprising an upper tooth (2) and a lower tooth (4), the lower tooth (4) being arranged in the L-shaped supporting bracket (3), a connecting flange being arranged between the upper tooth (2) and the lower tooth (4), the connecting flange being provided with a centering process auxiliary keyway (7), the intermediate gear (9) being connected to the double gear (1) by bolts and pins, two φ6 pin holes being processed at the tooth tops of the upper tooth (2), and two φ6 pin holes being processed at the tooth tops of the lower tooth (4); Features: The steps include: (1) Before milling the herringbone gears, the outer circle of the duplex gear (1), the outer circle of the connecting flange and the end face are ground respectively, and the coaxiality and the outer circle axis of the duplex gear (1) and the outer circle of the connecting flange are controlled, and the perpendicularity with the end face of the connecting flange does not exceed 0.02 mm; (2) On the outer circle of the connecting flange, according to the outer circles of the upper teeth (2) and the lower teeth (4) of the duplex gear (1) and the outer circle generatrix of the connecting flange, a centering process auxiliary keyway (7) is milled for centering alignment when milling the teeth. When the milling teeth are switched up and down, the keyway (7) is still aligned to ensure that the tooth tips of the upper teeth (2) and the lower teeth (4) of the duplex gear (1) coincide with each other; (3) After milling the herringbone teeth of the duplex gear (1), calculate the angle of half a tooth according to the number of teeth, rotate the gear milling machine table (5) left and right, and drill two φ6 pin holes on the two tooth tops of the upper tooth (2) and the lower tooth (4), respectively. The centers of the two tooth top pin holes on the upper tooth (2) are aligned with the upper tooth tip, and the centers of the two tooth top pin holes on the lower tooth (4) are aligned with the lower tooth tip; (4) Assemble the intermediate gear (9) and the duplex gear (1) by means of bolts and pins, calibrate the centers of the pin holes at the upper and lower ends of the duplex gear (1), and take the middle value as the center of the tooth tip when milling the herringbone teeth of the intermediate gear (9).

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