TWM477341U - Improved indexing device and cam transmission shaft thereof - Google Patents

Description

Indexing device improvement and its cam drive shaft

The present invention is to provide an indexing device improvement and a cam drive shaft thereof, in particular to an indexing device with high precision and a cam drive shaft thereof.

Please refer to FIG. 1 and FIG. 2 for a schematic diagram of a prior art. As shown in Fig. 1, a splitter commonly used in the industry is provided with an indexing device 1a inside, so that the splitter can perform precise operations.

The conventional indexing device 1a is internally provided with a driving shaft and a driven shaft 12a. The driving shaft can be a worm or a cam shaft 11a for transmitting power to the driven shaft 12a. The movable transmission shaft 12a drives the disk surface of the splitter to rotate. However, the worm has a problem of material wear due to long-term use, which is liable to cause a drop in cutting precision. Therefore, the currently better indexing devices on the market use cam drive shafts as the medium for switching power.

As shown in FIG. 2, the cam drive shaft 11a of the conventional indexing device includes an input shaft 111a, a first cam 112a, a second cam 113a and a sleeve 114a, wherein the first cam 112a and the second cam 113a are sleeved on The input shaft 111a, the second cam 113a is locked with the first cam 112a, and is fixed by the sleeve 114a. However, since the conventional camshaft 11a is composed of a plurality of separate components, it is inevitable that there is a shortage in manufacturing precision, resulting in an increase in the error value of the indexing device 1a.

In summary, the creator feels that the above-mentioned deficiencies can be improved. He has devoted himself to research and cooperates with the application of academics, and finally proposes a design that is reasonable in design and effective in improving the above-mentioned deficiencies.

The main purpose of the present invention is to provide an improvement of the indexing device and the cam drive shaft thereof, and the cam drive shaft inside the indexing device has high precision to reduce the error value of the indexing application device.

In order to achieve the above object, the present invention provides an indexing device that is mounted in an outer casing and includes a cam drive shaft, a driven drive shaft, and a rocker arm. The cam drive shaft includes an input shaft, a first cam and a second cam. The input shaft is disposed through the outer casing. The first cam and the second cam are extended from the input shaft in a radial direction. The first cam is circumferentially disposed with a plurality of groove structures spaced apart, and the second cam is provided with an elliptical flange. The driven transmission shaft is disposed adjacent to the cam drive shaft, and the driven transmission shaft includes a output shaft and a driven wheel, the driven wheel sleeve is disposed on the output shaft, and the driven wheel is provided with a plurality of rotors, and the rotors The groove structures are rotatably engaged in sequence. The rocker arm is bent on a locking portion, one end of the rocker arm is locked to the output shaft, and the other end of the rocker arm is provided with two rollers, and the two rollers are rollably sandwiched between the elliptical flanges The locking portion is locked to the outer casing.

Preferably, each groove structure has a straight line segment and a curved segment, and each straight line segment is connected to the corresponding curved segment to provide intermittent rotation of the driven wheel.

In order to achieve the above object, the present invention also provides a cam drive shaft for use in an indexing device including an input shaft, a first cam and a second cam. The first cam is formed by the input shaft extending in a radial direction, and the first cam is circumferentially disposed with a plurality of groove structures. The second cam is formed by the input shaft extending in a radial direction, and the second cam is provided with an elliptical flange.

Preferably, each groove structure has a straight line segment and a curved segment, and each straight line segment is connected to the corresponding curved segment.

The present invention has at least the following advantages: the indexing device of the present invention is provided with an integrally formed cam drive shaft, and the first cam is formed by the extension of the input shaft, thereby having high manufacturing precision and being operated when the indexing device is actuated. , can achieve lower error values.

Furthermore, the groove structure of the first cam of the present invention is provided with a straight line segment and a curved segment to provide intermittent actuation of the driven drive shaft.

In addition, the present invention further includes a rocker arm, and the second cam is provided with an elliptical flange, so that the rocker arm can drive the output shaft to perform periodic reciprocating motion by the elliptical flange.

The above description of the present invention and the following description of the embodiments are provided to illustrate and explain the principles of the present invention, and to provide further explanation of the scope of the patent application of the present invention.

[study]

1a‧‧° indexing device

11a‧‧‧Cam drive shaft

12a‧‧‧ driven drive shaft

111a‧‧‧Inlet shaft

112a‧‧‧First Cam

113a‧‧‧second cam

114a‧‧‧ bushing

[this creation]

Z‧‧‧ Indexing device

1‧‧‧ cam drive shaft

11‧‧‧Inlet shaft

12‧‧‧First Cam

121‧‧‧ Groove structure

1211‧‧‧ Straight line segment

1212‧‧‧ Curve section

13‧‧‧second cam

131‧‧‧Oval flange

14‧‧‧ Taper bearing

2‧‧‧ driven drive shaft

21‧‧‧Output shaft

22‧‧‧ driven wheel

221‧‧‧Rotor

23‧‧‧ Ball Bearings

24‧‧‧ Taper bearing

3‧‧‧ rocker arm

31‧‧‧Locking

32‧‧‧Roller

A‧‧‧first axial direction

B‧‧‧second axial

S‧‧‧ outer casing

S1‧‧‧Ball bearing housing

S2‧‧‧ Tapered housing

1 is a schematic view of a conventional technical structure of an indexing device; FIG. 2 is a schematic view of a conventional technical structure of a cam drive shaft; FIG. 3 is a side view (1) of the structure of the first embodiment of the indexing device of the present invention; The schematic diagram (1) of the first embodiment of the cam drive shaft of the present invention; FIG. 4B is a schematic view (2) of the first embodiment of the cam drive shaft of the present invention; FIG. 5 is the structure of the first embodiment of the indexing device of the present invention. Side view (2); Fig. 6 is a side view (1) of the structure of the second embodiment of the indexing device of the present invention; Fig. 7 is a side view (2) of the structure of the second embodiment of the indexing device of the present invention.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can easily understand the present invention by the improvement of the indexing device disclosed in the following embodiments and the specific structural features of the cam drive shaft. The advantages and effects of creation.

[First Embodiment]

Please refer to FIG. 3 to FIG. 5 , wherein FIG. 3 is a side view showing the structure of the first embodiment of the indexing device and the cam drive shaft thereof, and FIG. 4A and FIG. 4B are respectively schematic views of the cam drive shaft of the embodiment. FIG. Another side view of the structure of the present embodiment.

As shown in FIG. 3, this embodiment provides an indexing device Z that is mounted on an outer casing S. Internally, including a cam drive shaft 1 and a driven drive shaft 2, wherein the power of the indexing device Z is input by the cam drive shaft 1 and then converted to the driven drive shaft 2, so that the driven drive shaft 2 can be driven The disk surface of the splitter rotates. Hereinafter, each component of the present creation and its connection relationship will be described in detail.

4A and 4B, the cam drive shaft 1 includes an input shaft 11 and a first cam 12, wherein the input shaft 11 rotates with a first axial direction A as an axis, and the first cam 12 is driven by the force. The shaft 11 is formed to extend in the radial direction of the first axial direction A, that is, the first cam 12 is formed to extend in a straight line direction perpendicular to the first axial direction A. Furthermore, the input shaft 11 is disposed through the outer casing S, and the first cams 12 are circumferentially disposed with a plurality of groove structures 121. Since the input shaft 11 and the first cam 12 are integrally formed, the precision in manufacturing can be improved to reduce the error value of the indexing device Z.

Further, each groove structure 121 on the first cam 12 has a straight line segment 1211 and a curved segment 1212, and each straight line segment 1211 is connected to the corresponding curved segment 1212 to be input from the input force axis 11 The power is intermittently switched to the driven transmission shaft 2. That is, when the cam drive shaft 1 rotates, when the driven transmission shaft 2 and the first cam 12 mesh with the straight line segment 1211 of the groove structure 121, the driven transmission shaft 2 stops rotating; when the driven transmission shaft 2 and the driven transmission shaft 2 When the first cam 12 is engaged with the curved section 1212 of the groove structure 121, the driven transmission shaft 2 starts to rotate.

In addition, the cam drive shaft 1 further includes two tapered bearings 14 . The two ends of the input shaft 11 respectively pass through the taper bearings 14 of the two cam drive shafts 1 , and the taper bearings 14 of the two cam drive shafts 1 are respectively installed. On the two corresponding side walls of the outer casing S.

As shown in FIG. 3 and FIG. 5 , the driven transmission shaft 2 is disposed adjacent to the cam drive shaft 1 and is also disposed inside the outer casing S. The driven transmission shaft 2 includes a output shaft 21 and a driven wheel 22 . The driven wheel 22 is sleeved on the output shaft 21 and meshes with the first cam 12 of the cam drive shaft 1. The output shaft 21 rotates with a second axial direction B as an axis, and the second axial direction B and the first axial direction A are perpendicular to each other. Thereby, the power transmitted from the first axial direction A to the input shaft 11 can be controlled by the first cam 12 and the driven The engagement of the wheel 22 is converted into a rotation of the output shaft 21 that drives the second axial direction B.

In addition, the driven transmission shaft 2 further includes a ball bearing 23, the output shaft 21 is disposed through the ball bearing 23; the outer casing S is provided with a ball bearing seat S1, and the ball bearing 23 is mounted on the ball bearing seat S1 .

Further, the driven wheel 22 is disposed around the plurality of rotors 221, and the rotors 221 are rotatably inserted around the driven wheels 22 and sequentially meshed with the groove structures 121. That is, when the rotor 221 of the driven wheel 22 is engaged with the straight section 1211 of the groove structure 121, the first cam 12 only drives the rotor 221 to rotate (that is, rotates with the axis of the rotor 221); when the driven wheel 22 When the rotor 221 is engaged with the curved section 1212 of the groove structure 121, the first cam 12 will drive the rotor 221 to revolve (that is, rotate with the axis of the driven wheel 22). Thereby, the creation can achieve the effect of intermittently pushing the driven transmission shaft 2 to rotate.

[Second embodiment]

Please refer to FIG. 6 and FIG. 7 and FIG. 4A and FIG. 4B together. FIG. 6 is a side view showing the modification of the indexing device of the present invention and the structure of the second embodiment of the cam drive shaft, and FIG. 7 is the embodiment of the present embodiment. Another structural side view. The difference between the embodiment and the above embodiment is that the rocker arm 3 is further connected to the first cam 12 and the output shaft 21 to provide a reciprocating motion of the output shaft 21 along the second axial direction B. .

In detail, the cam drive shaft 1 is further provided with a second cam 13 extending from the input shaft 11 and the first cam 12, and the second cam 13 is provided with an elliptical flange 131. The rocker arm 3 is bent on a locking portion 31, wherein one end of the rocker arm 3 is locked to the output shaft 21 of the driven transmission shaft 2, and the other end is provided with two rollers 32, and the two rollers The sub-32 is rotatably co-engaged with the elliptical flange 131, and the locking portion 31 is locked to the outer casing S. Thereby, when the input shaft 11 drives the first cam 12 to rotate, the elliptical flange 131 of the second cam 13 drives the rocker arm 3 to periodically swing to drive the output shaft 21 to reciprocate along the second axial direction B. .

In the embodiment, the driven transmission shaft 2 further includes a taper bearing 24, and the The driven wheel 22 is disposed through the taper bearing 24 of the cam drive shaft 1; the outer casing S is further provided with a tapered bearing seat S2, and the taper bearing 24 of the driven drive shaft 2 is mounted on the tapered bearing seat S2. Thereby, when the driven wheel 22 is pushed by the reciprocating output shaft 21, it can be correspondingly actuated along the second axial direction B.

[Possible effects of the examples]

In summary, the improved indexing device provided by the present invention and its cam drive shaft can have the following beneficial effects: the present invention provides an integrally formed cam drive shaft, the first cam of which is formed by the extension of the input shaft, thus It has a high manufacturing precision and can achieve a lower error value when the indexing device is actuated.

Furthermore, the groove structure of the first cam of the present invention is provided with a straight line segment and a curved segment to provide intermittent actuation of the driven drive shaft.

In addition, the present invention further includes a rocker arm, and the second cam is provided with an elliptical flange, so that the rocker arm can drive the output shaft to perform periodic reciprocating motion by the elliptical flange.

In summary, this creation has already met the requirements of the new patent and applied in accordance with the law. However, the above disclosures are only preferred embodiments of the present invention, and the scope of rights of the present invention cannot be limited thereto. Therefore, the equal changes or modifications made according to the scope of the application of the present application are still covered by the present application.

Z‧‧‧ Indexing device

1‧‧‧ cam drive shaft

11‧‧‧Inlet shaft

12‧‧‧First Cam

121‧‧‧ Groove structure

2‧‧‧ driven drive shaft

22‧‧‧ driven wheel

221‧‧‧Rotor

A‧‧‧first axial direction

S‧‧‧ outer casing

Claims (7)

An indexing device is mounted in an outer casing, comprising: a cam drive shaft, comprising a power input shaft, a first cam and a second cam, the input shaft is disposed on the outer casing, the first cam and the first cam a second cam is formed by the input shaft extending in a radial direction, the first cam is circumferentially disposed with a plurality of groove structures, the second cam is provided with an elliptical flange, and a driven transmission shaft is adjacent to the a cam drive shaft, the driven drive shaft includes a output shaft and a driven wheel, the driven wheel sleeve is disposed on the output shaft, the driven wheel is provided with a plurality of rotors, and the rotors are rotatably engaged with the rotors a groove structure; and a rocker arm bent to a lock portion, one end of the rocker arm is locked to the output shaft, and the other end of the rocker arm is provided with two rollers, the two rollers can be rolled The ground is co-located on the elliptical flange, and the locking portion is locked to the outer casing. The indexing device of claim 1, wherein each of the groove structures has a straight line segment and a curved segment, and each straight line segment is coupled to the corresponding curved segment to provide intermittent rotation of the driven wheel. The indexing device of claim 1, wherein the driven transmission shaft further comprises a taper bearing, the driven wheel is disposed on the taper bearing of the cam drive shaft; the outer casing is further provided with a tapered bearing seat, the driven A taper bearing of the drive shaft is mounted on the tapered bearing housing. The indexing device of any one of claims 1 to 3, wherein the cam drive shaft further comprises a two-taper bearing, the two ends of the input shaft respectively pass through the taper bearings of the two cam drive shafts, and the two cams The tapered bearings of the drive shaft are respectively mounted on two corresponding side walls of the outer casing. The indexing device of any one of claims 1 to 3, wherein the driven transmission shaft further comprises a ball bearing, the output shaft is disposed through the ball bearing; the outer casing is provided with a ball bearing seat, the ball bearing Installed in the ball bearing housing. A cam drive shaft for use in an indexing device comprising: a first input shaft extending from the input shaft in a radial direction, wherein the first cam is circumferentially spaced apart from the plurality of groove structures; and a second cam from which the input shaft is along the diameter The directionwise extension is formed, and the second cam is provided with an elliptical flange. The cam drive shaft of claim 6, wherein each of the groove structures has a straight line segment and a curved segment, and each straight line segment is coupled to the corresponding curved segment.