CN111250798A - A translation mechanism and gear processing device capable of synchronously and steplessly adjusting the radius of gyration - Google Patents

Abstract

The invention is suitable for the technical field of gear machining, and provides a translation mechanism capable of steplessly adjusting the gyration radius and a gear machining device, which comprise a supporting seat, wherein a plurality of rollers are arranged on the supporting seat; the auxiliary cutter disc is positioned between the rollers; the main cutter head is positioned above the auxiliary cutter head, and the main cutter head and the auxiliary cutter head are not coaxial; the two ends of the connecting rod are fixedly connected with a first connecting rod shaft and a second connecting rod shaft respectively, the first connecting rod shaft is connected with the auxiliary cutter head in a sliding mode, and the second connecting rod shaft is connected with the main cutter head in a sliding mode; an input shaft connected with the main cutter head; and the radius adjusting device is used for adjusting the distance between the second connecting rod shaft and the center of the main cutter head. Therefore, the gear with different tooth trace radiuses can be processed, the rotary motion radiuses of the gear processing mechanisms can be synchronously adjusted at the same time, and the adjusting efficiency is high.

Description

A translation mechanism and gear processing device capable of synchronously and steplessly adjusting the radius of gyration

technical field

The invention belongs to the technical field of gear processing, and in particular relates to a translation mechanism and a gear processing device capable of synchronously and steplessly adjusting the radius of gyration.

Background technique

At present, there are mainly variable hyperbolic arc tooth line cylindrical gears and circular arc tooth line cylindrical gears with equal tooth thickness in the circumferential direction. However, the processing method of circular arc tooth line cylindrical gears has some shortcomings, such as:

The circular arc tooth line cylindrical gear processing device disclosed in the patent CN100335821C adopts a parallel link structure. When the gear is processed, the blade fixed on the tool holder makes a rotary motion in a plane parallel to the axis of the cylindrical gear. The normal direction of the working base surface remains unchanged, but this method can only process the circular arc tooth line cylindrical gear with the same tooth thickness in the circumferential direction of the circular arc tooth line, and the device only cuts the gear once in one cycle, and the processing efficiency Low.

Patent CN103203647B discloses a circular arc tooth line cylindrical gear translation processing device, which adopts a planetary gear train and an idler gear structure. The device can realize multi-tool multi-blade multi-blade cutting, and has high processing efficiency, but it can only process circumferentially equal tooth thickness arc tooth line cylindrical gear.

Patent CN1047137A discloses the circular arc tooth line cylindrical gear and its processing method. When the gear is processed, the circular arc tooth line cylindrical gear is milled by a blade fixed on the rotating cutter head, and the working base surface of the blade is continuously driven by the rotating cutter head. Change, the circular arc tooth line cylindrical gear processed by this method has the same tooth thickness in the normal direction of the circular arc tooth line, that is, the tooth groove width is equal, but the circumferential tooth groove width is not equal, that is, the circumferential tooth thickness is not equal. equal. This method can only continuously cut the same tooth slot in one cycle, and the processing efficiency is low.

Patent CN106438920A discloses a variable hyperbolic arc tooth line cylindrical gear, which provides a large cutter head machining process, the cutter rotates around the center of the cutter head, and the working base surface of the cutter changes continuously with the rotating cutter head. At the same time, only continuous cutting can be performed on the same tooth slot, the processing efficiency is low, the processing cycle is long, and the processing cost is high.

It can be seen that the current circular arc tooth line cylindrical gear has a complex structure, and can only adapt to one type of circular arc tooth line cylindrical gear, and often can only cut the same tooth slot, and the processing efficiency is low; at the same time, the current The arc tooth line cylindrical gear processing device can only process gears with one tooth line radius. When it is necessary to process gears with different tooth line radii, equipment replacement is required, and the equipment cost is high.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a translation mechanism and a gear processing device that can synchronously and infinitely adjust the radius of gyration, aiming to solve the problem of the complex structure, low processing adaptability, low processing efficiency, and especially inapplicability of gear processing devices in the prior art. Technical problems in machining of gears with different arc tooth line radii.

The present invention is achieved in this way, a translational mechanism capable of synchronously and steplessly adjusting the radius of gyration, comprising:

a support seat, a plurality of rollers are arranged on the support seat;

an auxiliary cutter head, the auxiliary cutter head is located between the rollers;

a main cutter head, the main cutter head is located above the auxiliary cutter head, and the main cutter head and the auxiliary cutter head are not coaxial;

a connecting rod, two ends of the connecting rod are respectively fixedly connected with a first connecting rod shaft and a second connecting rod shaft, the first connecting rod shaft is slidably connected with the auxiliary cutter head, and the second connecting rod shaft is connected with the main cutter head is slidably connected;

an input shaft, the input shaft is connected with the main cutter head;

a radius adjusting device for adjusting the distance between the second connecting rod shaft and the center of the main cutter head, the radius adjusting device comprises a turntable coaxial with the main cutter head, and the turntable has a The third sliding groove of the connecting rod shaft.

Further, the third sliding groove does not extend in the radial direction of the turntable.

Further, the number of the third sliding grooves is the same as the number of the second connecting rod shafts.

Further, the turntable is a worm gear, and the diameter of the turntable is equal to the diameter of the main cutter head.

Further, a connecting lug is provided on the main cutter head, a worm is installed on the connecting lug, and the worm wheel is engaged with the worm.

Further, the support seat also has a first installation hole of the input shaft, and the first installation hole of the input shaft is coaxial with the main cutter head.

Further, the auxiliary cutter head includes an auxiliary inner ring body and an auxiliary outer ring body, and the auxiliary inner ring body and the auxiliary outer ring body are connected by an auxiliary spoke plate; the auxiliary spoke plate is provided with a first sliding groove , the first sliding groove is used to install the first connecting rod shaft.

Further, the main cutter head includes a main inner ring body and a main outer ring body, and the main inner ring body and the main outer ring body are connected by a main spoke plate; the main spoke plate is provided with a second sliding groove, The second connecting rod shaft passes through the second sliding groove, so that the second connecting rod shaft is located on both sides of the main cutter head.

Further, the first sliding grooves are distributed along the radial direction of the auxiliary cutter head, and the second sliding grooves are distributed along the radial direction of the main cutter head.

The present invention also provides a gear processing device, comprising a gear processing mechanism and the above-mentioned translation mechanism capable of synchronously and steplessly adjusting the radius of gyration, the gear processing mechanism being mounted on the second connecting rod shaft.

The gear processing device of the present invention has the advantages of compact structure, small vibration, stable rotation, high rigidity of components, high processing precision, and high processing efficiency, which increases the application of gear processing. Compared with the prior art, the present invention has at least the following technical effects:

1. In the translation mechanism of the present invention that can synchronously and infinitely adjust the radius of gyration, the main cutter head, the auxiliary cutter head and the connecting rod constitute a parallel motion mechanism. Under the rotation of the main cutter head, the connecting rod realizes translational movement, which can be synchronously and infinitely adjusted. The structure of the translational mechanism of the radius of gyration is compact and simple.

2. Through the radius adjusting device, the distance between the second connecting rod shaft and the center of the main cutter head can be adjusted. The movement radius can also be adjusted, and it belongs to a stepless adjustment method. Therefore, gears with different tooth line radii can be processed, and the continuous stepless adjustment of the process parameter of the arc tooth line radius is realized, which increases the application of gear processing. .

3. When a gear processing mechanism is installed on each second connecting rod shaft, the radius adjusting device of the present invention can simultaneously adjust the distances between a plurality of second connecting rod shafts and the center of the main cutter head, therefore, The turning radius of multiple gear processing mechanisms can be synchronously adjusted at the same time, and the adjustment efficiency is high.

4. The corresponding gear processing mechanism can be installed on the translation mechanism that can synchronously and infinitely adjust the radius of gyration as required to realize the translational motion of the gear processing mechanism. Therefore, the translation mechanism of the present invention that can synchronously and infinitely adjust the radius of gyration can It is suitable for processing variable hyperbolic arc tooth line cylindrical gears and circular arc tooth line cylindrical gears with equal tooth thickness, and has strong processing adaptability;

5. In the gear processing device of the present invention for processing the variable hyperbolic arc tooth line cylindrical gear, it can ensure that the blade performs a rotary motion relative to the axis of the main cutter head, that is, the revolving motion of the blade, and at the same time the blade is relative to its own axis. Do rotary motion, that is, the rotation motion of the blade, so that the tangential direction of the working base surface of the blade always points to the axis of the input shaft, and the final composite motion of the blade is: both the rotary motion around the axis of the main cutter head, and the working of the blade. The tangential direction of the base surface always points to the axis of the input shaft, so it is possible to process the variable hyperbolic circular arc tooth line cylindrical gear with the tooth line radius equal to the gyration radius.

6. In the present invention, multiple blades can also be arranged in a straight line at a distance of πm, and m is the module of the gear to be processed. Therefore, when cutting the gear, multiple blades can continuously process the variable hyperbolic arc tooth line cylindrical gear. Or the circular arc tooth line cylindrical gear with equal tooth thickness in the circumferential direction, which has high processing efficiency.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that are used in the description of the embodiments of the present invention or the prior art. Obviously, the drawings described below are only for the present invention. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural representation of the translation mechanism of the present invention that can synchronously and infinitely adjust the radius of gyration;

Fig. 2 is the structural schematic diagram of the auxiliary cutter head with the second connecting rod shaft and the automatic radius adjusting device installed according to the present invention;

Fig. 3 is the structural representation of the support seat of the present invention;

Fig. 4 is the structural representation of the auxiliary cutter head of the present invention;

Fig. 5 is the structural representation of the main cutter head of the present invention;

FIG. 6 is a schematic diagram of the gear processing device installed with the gear processing mechanism of the present invention;

Fig. 7 is the structural representation of the gear processing mechanism of the present invention;

Fig. 8 is the structural representation of the tool holder of the present invention;

Fig. 9 is a structural schematic diagram of the blade assembly of the present invention;

Fig. 10 is another structural schematic diagram of the blade assembly of the present invention;

FIG. 11 is another structural schematic diagram of the blade assembly of the present invention.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

1 is a schematic structural diagram of the translation mechanism capable of synchronously and steplessly adjusting the radius of gyration of the present invention, including a support base 10, an auxiliary cutter head 20, a main cutter head 30, and a connecting rod 40;

The support base 10 is provided with a plurality of rollers 11, the rollers 11 are evenly distributed on the support base 10, the rollers 11 can rotate relative to the support base 10, and the support base 10 has a first axis A1; The number is multiple.

The auxiliary cutter head 20 is arranged between the plurality of rollers 11, and the auxiliary cutter head 20 and the support base 10 are coaxial, that is to say, the axis of the auxiliary cutter head 20 is also the first axis A1;

The main cutter head 30 is located above the auxiliary cutter head 20, the main cutter head 30 has a second axis A2, the first axis A1 and the second axis A2 are not coaxial, that is, the main cutter head 30 and the auxiliary cutter head 20 are not coaxial ;

The connecting rod 40, the two ends of the connecting rod 40 are fixedly connected with the first connecting rod shaft 21 and the second connecting rod shaft 31 respectively, that is to say, the connecting rod 40, the first connecting rod shaft 21, the second connecting rod shaft 31 is relatively fixed, the first connecting rod shaft 21 is slidably connected with the auxiliary cutter head 20, and the second connecting rod shaft 31 is slidably connected with the main cutter head 30;

The input shaft 50 is connected with the main cutter head 30 .

As shown in FIG. 2 , the translation mechanism of the present invention that can synchronously and infinitely adjust the radius of gyration further includes a radius adjusting device 60 for adjusting the distance between the second link shaft 31 and the center of the main cutter head 30 , The radius adjusting device 60 includes a turntable 72 coaxial with the main cutter head 30 , and the turntable 72 has a third sliding groove 711 for accommodating the second connecting rod shaft 31 .

Preferably, the number of the connecting rod 40 , the first connecting rod shaft 21 and the second connecting rod shaft 31 is multiple.

When the distance between the second link shaft 31 and the center of the main cutter head 30 needs to be adjusted, the turntable 72 is rotated to drive the second link shaft 31 to move in the third sliding groove 711, thereby realizing the second link shaft The distance between 31 and the center of the main cutter head 30 is adjusted.

Preferably, the third sliding groove 711 does not extend in the radial direction of the turntable 72 .

Preferably, the number of the third sliding grooves 711 is the same as the number of the second link shafts 31 , therefore, the radius adjusting device 60 of the present invention can simultaneously adjust a plurality of second link shafts 31 and the main cutter The distance between the centers of the discs 30 .

Preferably, the turntable 72 is a worm gear, and the diameter of the turntable 72 is equal to the diameter of the main cutter head 30 .

Preferably, a connecting lug 38 is provided on the main cutter head 30 , a worm 71 is installed on the connecting lug 38 , and the worm wheel engages with the worm 71 .

Due to the excellent self-locking performance of the worm gear mechanism, the second link shaft 31 can be better locked in a fixed position.

3 is a schematic structural diagram of the support seat, the support seat 10 also has a first installation hole 12 of the input shaft, the first installation hole 12 of the input shaft is located at an eccentric position of the support seat 10, and the first installation hole 12 of the input shaft Coaxial with the main cutter head 30, that is to say, the axis of the first installation hole 12 of the input shaft is also the second axis A2;

The input shaft 50 is connected to the main cutter head 30 after passing through the first installation hole 12 of the input shaft, and is used for driving the main cutter head 30 to rotate.

4 is a schematic structural diagram of the auxiliary cutter head, the auxiliary cutter head 20 includes an auxiliary inner ring body 22 and an auxiliary outer ring body 23, and the auxiliary inner ring body 22 and the auxiliary outer ring body 23 are connected by the auxiliary wheel spoke plate 24. Therefore, auxiliary weight reduction holes 26 are formed between the auxiliary spoke plates 24; preferably, the auxiliary spoke plates 24 are evenly distributed on the auxiliary cutter head 20; the structure of the auxiliary cutter head 20 can make the auxiliary cutter head 20 have a lighter weight At the same time, it can maintain the stability of the auxiliary cutter head 20 during the movement.

The secondary spoke plate 24 is provided with a first sliding groove 25 for installing the first connecting rod shaft 21 . Preferably, the number of the first sliding grooves 25 is multiple; preferably, the first sliding grooves 25 are located in the radial direction of the auxiliary cutter head 20 .

As shown in FIG. 5 is a schematic structural diagram of the main cutter head. The main cutter head 30 includes a main inner ring body 32 and a main outer ring body 33. The main inner ring body 32 and the main outer ring body 33 are connected by the main spoke plate 34. Therefore, in the main Main weight-reducing holes 36 are formed between the wheel spoke plates 34; preferably, the main wheel spoke plates 34 are evenly distributed on the main cutter head 30; the structure of the main cutter head 30 can make the main cutter head 30 have a lighter weight and at the same time. The stability of the main cutter head 30 during the movement is maintained.

The main spoke plate 34 is provided with a second sliding groove 35 , and the second connecting rod shaft 31 passes through the second sliding groove 35 , so that the second connecting rod shaft 31 is located on the main cutter head 30 . on both sides.

Preferably, the number of the second sliding grooves 35 is multiple; preferably, the second sliding grooves 35 are located in the radial direction of the main cutter head 30 .

The main inner ring body 32 has a second installation hole 37 for the input shaft, and the input shaft 50 is installed on the main cutter head 30 through the second installation hole 37 of the input shaft for driving the main cutter head 30 to rotate.

When machining gears, the input shaft 50 drives the main cutter head 30 to rotate, and the main cutter head 30 drives the auxiliary cutter head 20 to rotate through the second connecting rod shaft 31, the connecting rod 40 and the first connecting rod shaft 21. Therefore, the main cutter head 30, the auxiliary cutter head 20 and the connecting rod 40 constitute a parallel motion mechanism. When the input shaft 50 drives the main cutter head 30 to rotate, the connecting rod 40 performs translational movement.

When the distance between the second link shaft 31 and the center of the main cutter head 30 needs to be adjusted, the rotation of the worm 71 drives the worm wheel to rotate, thereby driving the second link shaft 31 to slide between the third sliding groove 711 and the second sliding groove 711. The second connecting rod shaft 31 drives the first connecting rod shaft 21 to move in the first sliding groove 25 through the connecting rod 40. When it moves to an appropriate position, the rotation of the worm 71 is suspended, thereby realizing the second connecting rod shaft 31. The distance from the center of the main cutter head 30 is adjusted. Due to the excellent self-locking performance of the worm gear mechanism, the second link shaft 31 can be locked in a fixed position.

6 is a schematic diagram of a gear processing device with a gear processing mechanism installed. The gear processing mechanism 100 is installed on the second connecting rod shaft 31. Since the second connecting rod shaft 31 and the connecting rod 40 are fixedly connected, a gear can be realized. Translation of the processing mechanism 100 . At the same time, since the distance between the second link shaft 31 and the center of the main cutter head 30 can be adjusted by the radius adjusting device 60 , the turning radius of the gear machining mechanism 100 can also be adjusted. Since the turntable 72 can rotate continuously, the distance between the second link shaft 31 and the center of the main cutter head 30 can also be continuously adjusted. Therefore, the turning radius of the gear machining mechanism 100 belongs to a stepless adjustment method.

Further, the gear machining mechanism 100 can be installed on each of the second connecting rod shafts 31 , so that the gear blank workpiece can be cut multiple times in one cycle, which further improves the machining efficiency. At the same time, the radius adjusting device 60 of the present invention can simultaneously adjust the distances between a plurality of second connecting rod shafts 31 and the center of the main cutter head 30 , and therefore, can simultaneously adjust the rotational motion radii of a plurality of gear processing mechanisms 100 . .

Generally speaking, the arc tooth line radius of the gear to be machined is equal to the rotational motion radius of the gear machining mechanism.

FIG. 7 is a schematic diagram of the structure of the gear processing mechanism. The gear processing mechanism is used to process the variable hyperbolic arc tooth line cylindrical gear. It includes a tool holder 101 and a second sun gear 103 that are fixedly mounted on the second connecting rod shaft 31. The tool holder 101 is provided with a first planetary gear 104 and a second planetary gear 105. The first planetary gear 104 and the second planetary gear 105 surrounds the first sun gear 102 and the second sun gear 103 and meshes with the first sun gear 102 and the second sun gear 103 .

The first sun gear 102 and the second sun gear 103 have the same number of teeth.

8 is a schematic diagram of the structure of the tool holder. The tool holder 101 includes a tool holder plate 1011. The tool holder plate 1011 has a blade accommodating groove 1012 for accommodating the blade assembly 106. The tool holder plate 1011 is provided with a first column 1013 for In order to install the first planetary wheel 104, the tool holder plate 1011 is provided with a second column 1014 for installing the second planetary gear 105. The tool holder 101 also includes a tool holder mounting block 1015, the tool holder mounting block 1015 and the tool holder plate 1011 There is a gap between them, and the tool holder mounting block 1015 has a tool holder mounting hole 1016. When the tool holder 101 is installed, the second link shaft 31 is passed through the tool holder mounting hole 1016, so that the second link shaft 31 is connected to the tool holder. 101 is fixedly connected, and at the same time, the first sun gear 102 is located between the tool holder mounting block 1015 and the main cutter head 30, and the second sun gear 103 is sleeved on the second connecting rod shaft 31, so that the second sun gear 103 is located in the tool holder. Between the installation block 1015 and the tool holder plate 1011; the tool holder installation block 1015 is connected to the tool holder plate 1011 through the connecting columns 1017 on both sides.

9 is a schematic diagram of the structure of the blade assembly, the blade assembly 106 includes a blade 1064, a blade seat 1063, a crank 1062, the number of the blade 1064, the blade seat 1063, and the crank 1062 are all single, after the blade 1064 passes through the blade seat 1063 It is fixed on the crank 1062, the blade 1064 and the blade seat 1063 are rotatably connected, and the blade seat 1063 is installed in the blade receiving groove 1012 of the tool holder; the crank 1062 is fixed with a first installation rod 1061, and the first installation rod 1061 is arranged on the first installation rod 1061. the eccentric position of the two sun gears 103 .

The number of blades 1064 in the blade assembly in FIG. 9 is one, therefore, during processing, only one tooth slot can be processed. In order to improve the processing efficiency, as shown in FIG. The assembly includes multiple blades 1064, multiple blade seats 1063, multiple cranks 1062, multiple blades 1064 pass through multiple blade bases 1063 and then are fixed on multiple cranks 1062, multiple blades 1064 and multiple blade bases 1063 A plurality of blade seats 1063 are installed in the blade receiving grooves 1012 of the tool holder; a plurality of short pins 1066 are fixed on the plurality of cranks 1062, and the plurality of short pins 1066 are rotatably connected to the connecting rod 1065, and the connecting rod 1065 The first mounting rod 1061 is fixed on the top, and the first mounting rod 1061 is arranged on the eccentric position of the second sun gear 103 .

The plurality of blades 1064 are arranged in a straight line at the interval of πm (m is the module of the gear to be processed). When cutting the gear, each blade processes a tooth slot, and the plurality of blades can continuously process the variable hyperbolic arc tooth line cylindrical gear. It is equivalent to cutting the gear blank with the variable hyperbolic arc tooth line and rack tool, thereby improving the processing efficiency.

Preferably, the cutting surfaces formed by the two cutting edges of the insert 1064 during the machining process are respectively a forward tapered surface and a reverse tapered surface.

In order to obtain the variable hyperbolic arc tooth line cylindrical gear, taking the machining of the tooth blank workpiece 1000 as an example, the working principle of the gear machining device of the present invention is as follows:

Translational movement:

The input shaft 50 drives the main cutter head 30 to rotate, and the main cutter head 30 drives the auxiliary cutter head 20 to rotate through the second connecting rod shaft 31, the connecting rod 40 and the first connecting rod shaft 21. Since the main cutter head 30 and the auxiliary cutter head 20 are not coaxial, Therefore, the main cutter head 30, the auxiliary cutter head 20 and the connecting rod 40 constitute a parallel motion mechanism, and when the input shaft 50 drives the rotation of the main cutter head 30, the connecting rod 40 performs translational movement;

Since the second connecting rod shaft 31 is fixedly connected with the tool rest 101 and the connecting rod 40, the tool rest 101 also moves in translation;

Rotational motion:

Because the tool rest 101 moves in translation, the tool rest 101 rotates relative to the main cutter head 30 , the second sun gear 103 is stationary relative to the main cutter head 30 , the second sun gear 103 rotates relative to the cutter head 101 , and the second sun gear 103 passes through the crank 1062 and other components make the blade 1064 rotate relative to the blade holder 101;

Revolutionary movement:

The tool rest 101 revolves around the axis A2 following the main tool disc 30 , so the blade 1064 also revolves around the axis A2 following the main tool disc 30 .

Final composite movement of the blade:

The final composite motion of the blade 1064 is a rotary motion around the axis A2 of the main cutter head 30, and the tangential direction of the working base surface of the blade 1064 always points to the axis of the input shaft 50. Therefore, the radius of the tooth line that can be processed is equal to the radius of the rotary motion The variable hyperbolic arc tooth line cylindrical gear.

The gear processing device of the present invention can ensure that the blade performs rotary motion relative to the axis of the main cutter head, that is, the revolving motion of the blade, and at the same time, the blade performs rotary motion relative to its own axis, that is, the self-rotating motion of the blade, thereby realizing the working base of the blade. The tangent of the face always points to the axis of the input shaft.

When specifically processing the variable hyperbolic arc tooth line cylindrical gear, the process of using the gear processing mechanism with only a single blade shown in FIG. 9 and the gear processing mechanism with multiple blades shown in FIG. 10 is slightly different. Specifically, : When the gear processing mechanism with only a single blade as shown in FIG. 9 is used, when the gear blank workpiece 1000 performs a rotary motion, the entire gear processing device or the gear blank workpiece 1000 performs a uniform linear feed motion, and the generating processing motion can be realized , After each tooth slot is processed, it is necessary to rotate the gear blank workpiece 1000 along its axis by 360°/Z (Z is the number of gear teeth), and then process the next tooth slot until the entire variable hyperbolic arc tooth line cylinder is cut out gear. When the gear machining mechanism with multiple blades as shown in Fig. 10 is used, it is not necessary to rotate the gear blank by 360°/Z angle after machining a tooth slot, and the gear machining mechanism with multiple blades can simultaneously cut the same number of tooth slots as the blades , it is only necessary to make the blank workpiece 1000 roll without sliding to realize continuous generating motion. After processing a group of tooth grooves with the same number of blades, rotate the blank workpiece 1000 along its axis by a corresponding angle to carry out the next group. Cogging machining.

FIG. 11 is a schematic structural diagram of another gear processing mechanism. The gear processing mechanism is used for processing circular-arc tooth-line cylindrical gears with equal tooth thickness in the circumferential direction. On the blade holder 101, the blade assembly includes a blade 1064 and a blade seat 1063, the blade seat 1063 is fixed on the blade holder 101, and the number of the blades 1064 can be single or multiple.

In order to obtain a circular arc tooth line cylindrical gear with equal tooth thickness in the circumferential direction, taking the machining of the tooth blank workpiece 1000 as an example, the working principle of the gear machining device of the present invention is as follows:

The input shaft 50 drives the main cutter head 30 to rotate, and the main cutter head 30 drives the auxiliary cutter head 20 to rotate through the second connecting rod shaft 31, the connecting rod 40 and the first connecting rod shaft 21. Since the main cutter head 30 and the auxiliary cutter head 20 are not coaxial, Therefore, the main cutter head 30, the auxiliary cutter head 20 and the connecting rod 40 constitute a parallel motion mechanism. When the input shaft 50 drives the rotation of the main cutter head 30, the connecting rod 40 performs a translational movement. 101 is fixedly connected, and the connecting rod 40 is fixedly connected, so the tool holder 101 also moves in translation, so the blade 1064 also moves in translation;

The tool rest 101 revolves around the axis A2 following the main tool disc 30 , so the blade 1064 also revolves around the axis A2 following the main tool disc 30 .

When machining circular arc tooth line cylindrical gears with equal tooth thickness in the circumferential direction, the gear blank workpiece 1000 performs a rotary motion, the entire gear processing device or the gear blank workpiece 1000 performs a uniform linear feed motion, and the blade 1064 and the rotating gear blank workpiece 1000 form a formation. Circumferential cylindrical gear with equal tooth thickness circular arc tooth line can be machined with tooth line radius equal to the radius of gyration motion.

Preferably, the blades 1064 are arranged in a straight line at an interval of πm (m is the module of the gear to be processed). When cutting the gear, the plurality of blades 1064 can continuously process the circumferential equal-tooth-thickness circular arc tooth line cylindrical gear, which is equivalent to the circumferential Cutting to the circular arc tooth line rack tool with equal tooth thickness, thereby improving the processing efficiency.

Since the turning radius of the gear machining mechanism 100 of the present invention is adjustable and belongs to a stepless adjustment method, gears with different tooth line radii can be machined, and the continuous process parameter of the arc tooth line radius can be realized. Stepless adjustment increases the application of gear processing.

At the same time, when the gear processing mechanism 100 is installed on each of the second link shafts 31 , the radius adjusting device 60 of the present invention can simultaneously adjust the distance between the plurality of second link shafts 31 and the center of the main cutter head 30 . Therefore, the rotational motion radius of multiple gear processing mechanisms 100 can be synchronously adjusted at the same time, and the adjustment efficiency is high.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (10)

1. A translation mechanism capable of synchronously and steplessly adjusting the gyration radius is characterized by comprising:

the supporting seat (10), a plurality of rollers (11) are arranged on the supporting seat (10);

the auxiliary cutter head (20), the auxiliary cutter head (20) is positioned between the rollers (11);

the main cutter head (30) is positioned above the auxiliary cutter head (20), and the main cutter head (30) and the auxiliary cutter head (20) are not coaxial;

the two ends of the connecting rod (40) are respectively fixedly connected with a first connecting rod shaft (21) and a second connecting rod shaft (31), the first connecting rod shaft (21) is connected with the auxiliary cutter head (20) in a sliding mode, and the second connecting rod shaft (31) is connected with the main cutter head (30) in a sliding mode;

the input shaft (50), the said input shaft (50) is connected with said main cutter head (30);

radius adjusting device (60), be used for adjusting second connecting rod axle (31) with distance between the center of main blade disc (30), radius adjusting device (60) include with main blade disc (30) coaxial carousel (72), have on carousel (72) and hold third sliding tray (711) of second connecting rod axle (31).

2. A synchronously stepless radius-of-gyration adjustable translation mechanism as claimed in claim 1, characterized in that said third sliding grooves (711) do not extend in the radial direction of the turntable (72).

3. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 1, characterized in that the number of the third sliding grooves (711) is the same as the number of the second link shafts (31).

4. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 2, characterized in that said turntable (72) is a worm gear, and the diameter of said turntable (72) is equal to the diameter of said main cutter (30).

5. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 4, characterized in that said main cutter (30) is provided with a connecting lug (38), said connecting lug (38) is provided with a worm (71), and said worm wheel is meshed with said worm (71).

6. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 1, wherein said supporting seat (10) further has a first input shaft mounting hole (12), and said first input shaft mounting hole (12) is coaxial with said main cutter head (30).

7. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 1, wherein said secondary cutter head (20) comprises a secondary inner ring body (22) and a secondary outer ring body (23), said secondary inner ring body (22) and said secondary outer ring body (23) are connected through a secondary spoke plate (24); the auxiliary wheel spoke plate (24) is provided with a first sliding groove (25), and the first sliding groove (25) is used for mounting the first connecting rod shaft (21).

8. The translational mechanism capable of synchronously and steplessly adjusting the gyration radius as claimed in claim 7, wherein said main cutter head (30) comprises a main inner ring body (32) and a main outer ring body (33), said main inner ring body (32) and said main outer ring body (33) being connected by a main spoke plate (34); be provided with second sliding tray (35) on main wheel radials (34), second connecting rod axle (31) pass second sliding tray (35) for second connecting rod axle (31) are located the both sides of main blade disc (30).

9. The translatory mechanism of claim 8, wherein said first sliding grooves (25) are radially distributed along the auxiliary cutter disc (20), and said second sliding grooves (35) are radially distributed along the main cutter disc (30).

10. A gear processing device, characterized by comprising a gear processing mechanism (100) and a translation mechanism capable of synchronously and steplessly adjusting the gyration radius according to any one of claims 1 to 9, wherein the gear processing mechanism (100) is mounted on the second connecting rod shaft (31).

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