CN203604563U - Indexing device and cam transmission shaft thereof - Google Patents

Abstract

The utility model provides an indexing means and cam drive shaft thereof, indexing means includes cam drive shaft, driven transmission shaft and rocking arm. The cam transmission shaft comprises an input shaft, a first cam and a second cam, the input shaft penetrates through the outer shell, the first cam and the second cam are formed by extending the input shaft, the first cam is provided with a plurality of groove structures in an encircling mode at intervals, and the second cam is provided with an elliptical flange. The cam drive shaft is adjacently arranged on the driven drive shaft, the driven drive shaft comprises a power output shaft and a driven wheel, the driven wheel is sleeved on the power output shaft, the driven wheel is provided with a rotor in a surrounding mode, and the rotor can be rotatably meshed with the groove structure in sequence. The rocker arm is bent at the locking part, one end of the rocker arm is locked at the output shaft, the other end of the rocker arm is provided with a roller, the rollers can roll to clamp the elliptical flange together, and the locking part is locked at the outer shell. The utility model provides a cam drive shaft in addition. Therefore, the utility model discloses can make indexing means have preferred precision.

Description

Indexing device and its cam drive shaft

technical field

The utility model is to provide an indexing device and a cam transmission shaft thereof, in particular to an indexing device and a cam transmission shaft thereof with higher precision.

Background technique

Please refer to FIG. 1 and FIG. 2 , which are schematic diagrams of known technologies. As shown in FIG. 1 , generally, a divider commonly used in the industry is provided with an indexing device 1a inside, so as to facilitate precise operation of the divider.

A driving transmission shaft and a driven transmission shaft 12a are all arranged inside the known indexing device 1a, wherein the driving transmission shaft can be a worm or a cam transmission shaft 11a, so as to transmit power to the driven transmission shaft 12a, so that from The moving transmission shaft 12a drives the disc surface of the divider to rotate. However, the worm has the problem of material wear after long-term use, which easily leads to a decrease in cutting accuracy. Therefore, relatively good indexing devices currently on the market all use a cam drive shaft as a medium for converting power.

As shown in Figure 2, the cam transmission shaft 11a of the known indexing device includes an input shaft 111a, a first cam 112a, a second cam 113a and a shaft sleeve 114a, wherein the first cam 112a and the second cam 113a are sleeved on On the input shaft 111a, the second cam 113a and the first cam 112a are locked to each other, and then fixed by the shaft sleeve 114a. However, since the known cam drive shaft 11a is composed of a plurality of separate components, it inevitably suffers from insufficient manufacturing precision, which increases the error value of the indexing device 1a.

To sum up, the inventor feels that the above-mentioned defects can be improved, Naite devoted himself to research and combined with the application of theories, and finally proposed a utility model with reasonable design and effective improvement of the above-mentioned defects.

Utility model content

The main purpose of the present utility model is to provide an indexing device and its cam drive shaft. The cam drive shaft inside the indexing device has high precision, so as to reduce the error value of the indexing application device.

In order to achieve the above object, the utility model provides an indexing device, which is installed in a housing and includes a cam transmission shaft, a driven transmission shaft and a rocker arm. The cam transmission shaft includes an input shaft, a first cam, and a second cam, the input shaft passes through the housing, the first cam and the second cam are formed by extending the input shaft along the radial direction, A plurality of groove structures are arranged around the first cam at intervals, and an elliptical flange is arranged on the second cam. The driven transmission shaft is adjacent to the cam transmission shaft, the driven transmission shaft includes an output shaft and a driven wheel, the driven wheel is set on the output shaft, the driven wheel is surrounded by a plurality of rotors, and these The rotor is rotatably engaged with these groove structures sequentially. The rocker arm is bent at a locking part, 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 can roll and clamp the ellipse together. the flange, and the locking part is locked on the outer casing.

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

Further, the driven transmission shaft also includes a tapered bearing, and the driven wheel passes through the tapered bearing of the driven transmission shaft; the outer shell is also provided with a tapered bearing seat, and the tapered bearing of the driven transmission shaft is installed in the tapered bearing seat .

Further, the cam drive shaft also includes two tapered bearings, the two ends of the input shaft are respectively installed in the taper bearings of the two cam drive shafts, and the tapered bearings of the two cam drive shafts are respectively installed in the two taper bearings of the outer casing. corresponding to the side wall.

Further, the driven transmission shaft also includes a ball bearing, and the output shaft passes through the ball bearing; the outer shell is provided with a ball bearing seat, and the ball bearing is installed in the ball bearing seat.

In order to achieve the above object, the utility model also provides a cam drive shaft applied to an indexing device, comprising an input shaft, a first cam and a second cam. The first cam is formed by extending the input shaft along the radial direction, and a plurality of groove structures are arranged around the first cam at intervals. The second cam is formed by extending the input shaft along the radial direction, and the second cam is provided with an elliptical flange.

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

The utility model has the following advantages at least:

The indexing device of the utility model is provided with an integrally formed cam transmission shaft, and its first cam is formed by extending the input shaft, so it has high manufacturing precision, and can achieve a lower error value when the indexing application device is operated .

Furthermore, the groove structure of the first cam of the present invention is provided with a straight section and a curved section to provide intermittent movement of the driven transmission shaft.

In addition, the utility model also includes a rocker arm, and the second cam is provided with an elliptical flange, so the rocker arm can drive the output shaft to perform periodic reciprocating motion through the elliptical flange.

The above description about the content of the utility model and the description of the following implementation modes are used to illustrate and explain the principle of the utility model, and provide further explanation of the patent application scope of the utility model.

Description of drawings

Fig. 1 is the known technical structural representation of indexing device;

Fig. 2 is the known technical structure schematic diagram of cam transmission shaft;

Fig. 3 is a structural side view (1) of the first embodiment of the indexing device of the present invention;

Fig. 4A is a schematic diagram (1) of the first embodiment of the cam drive shaft of the present invention;

Fig. 4B is a schematic diagram (2) of the first embodiment of the cam drive shaft of the present invention;

Fig. 5 is a structural side view (2) of the first embodiment of the indexing device of the present invention;

Fig. 6 is a structural side view (1) of the second embodiment of the indexing device of the present invention;

Fig. 7 is a structural side view (2) of the second embodiment of the indexing device of the present invention.

【Symbol Description】

[A known]

1a Indexing device

11a cam drive shaft

12a driven drive shaft

111a input shaft

112a first cam

113a second cam

114a shaft sleeve

[this utility model]

Z indexing device

1 cam shaft

11 input shaft

12 first cam

121 groove structure

1211 straight line segment

1212 curve segment

13 second cam

131 oval flange

14 taper bearing

2 driven drive shaft

21 output shaft

22 driven wheel

221 rotor

23 ball bearing

24 taper bearing

3 rocker arms

31 locking part

32 rollers

A first axis

B second axis

S shell

S1 ball bearing housing

S2 taper bearing seat

Detailed ways

The following specific examples illustrate the implementation of the present utility model, and those of ordinary skill in the art can easily understand the advantages and effects of the present utility model by the specific structural features of the indexing device and the cam transmission shaft disclosed in the following examples .

[First Embodiment]

Please refer to Fig. 3 to Fig. 5, wherein Fig. 3 is the structural side view of the first embodiment of the indexing device and the cam transmission shaft thereof of the present utility model, Fig. 4A and Fig. 4B are respectively the schematic diagrams of the cam transmission shaft of the present embodiment, Fig. 5 is another structural side view of this embodiment.

As shown in Figure 3, this embodiment provides an indexing device Z, which is installed inside an outer shell S, including a cam transmission shaft 1 and a driven transmission shaft 2, wherein the power of the indexing device Z is driven by the cam Shaft 1 is input, and then converted to the driven transmission shaft 2, so that the driven transmission shaft 2 can drive the disk surface of the divider to rotate. Hereinafter, the components of the present invention and their connections will be described in detail.

As shown in Figures 4A and 4B, the cam drive shaft 1 includes an input shaft 11 and a first cam 12, wherein the input shaft 11 rotates around a first axis A, and the first cam 12 is driven by the input shaft 11 The first cam 12 is formed along a radial extension of the first axis A, that is, the first cam 12 is formed by extending in a straight line perpendicular to the first axis A. Furthermore, the input shaft 11 passes through the outer shell S, and the first cam 12 is provided with a plurality of groove structures 121 spaced around it. Since the input shaft 11 and the first cam 12 are integrally formed, the manufacturing precision can be improved to reduce the error value of the indexing device Z.

To further illustrate, each groove structure 121 on the first cam 12 has a straight line segment 1211 and a curved line segment 1212, and each straight line segment 1211 is connected with the corresponding curved line segment 1212, so as to input from the input shaft 11 The power of is intermittently transferred to the driven propeller shaft 2. That is, when the cam transmission shaft 1 rotates, when the driven transmission shaft 2 and the first cam 12 are engaged with the straight section 1211 of the groove structure 121, the driven transmission shaft 2 stops rotating; When a 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 transmission shaft 1 also includes two tapered bearings 14, the two ends of the input shaft 11 are respectively passed through the tapered bearings 14 of the two cam transmission shafts 1, and the tapered bearings of the two cam transmission shafts 1 14 are mounted on two corresponding side walls of the outer casing S respectively.

As shown in Fig. 3 and Fig. 5, the driven transmission shaft 2 is arranged adjacent to the cam transmission shaft 1, and is also passed through the inside of the outer casing S. The driven transmission shaft 2 includes an output shaft 21 and a driven wheel 22, wherein The driven wheel 22 is sleeved on the output shaft 21 and meshed with the first cam 12 of the cam drive shaft 1 . The output shaft 21 rotates around a second axis B, and the second axis B and the first axis A are perpendicular to each other. In this way, the power transmitted from the first axis A to the input shaft 11 can be transformed into driving the output shaft 21 on the second axis B to rotate through the engagement of the first cam 12 and the driven wheel 22 .

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

To further illustrate, the driven wheel 22 is surrounded by a plurality of rotors 221 , and these rotors 221 are rotatably inserted around the driven wheel 22 and engage with the groove structures 121 in sequence. That is, when the rotor 221 of the driven wheel 22 meshes with the straight section 1211 of the groove structure 121, the first cam 12 will only drive the rotor 221 to rotate (that is, rotate with the axis of the rotor 221); when the rotor 221 of the driven wheel 22 When meshing with the curved section 1212 of the groove structure 121 , the first cam 12 will drive the rotor 221 to revolve (that is, rotate around the axis of the driven wheel 22 ). Thereby, the utility model can achieve the effect of intermittently promoting the rotation of the driven transmission shaft 2 .

[Second Embodiment]

Please refer to Fig. 6 and Fig. 7, and refer to Fig. 4A and Fig. 4B together, wherein Fig. 6 is a structural side view of the second embodiment of the indexing device and its cam transmission shaft of the present invention, and Fig. 7 is the structure side view of the second embodiment of the present embodiment Another side view of the structure. The difference between this embodiment and the above embodiment is that it also includes a rocker arm 3, the two ends of which are respectively connected with the first cam 12 and the output shaft 21, so as to provide the effect that the output shaft 21 can reciprocate along the second axis B .

In detail, the cam shaft 1 is further provided with a second cam 13 , the second cam 13 is formed by extending 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 at 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 ellipse flange 131 is jointly clamped by the sub 32 in a rolling manner, and the locking portion 31 is locked on the outer casing S. As shown in FIG. Thus, when the input shaft 11 drives the first cam 12 to rotate, the elliptical flange 131 of the second cam 13 will drive the rocker arm 3 to swing periodically, so as to drive the output shaft 21 to reciprocate along the second axis B .

In this embodiment, the driven transmission shaft 2 also includes a tapered bearing 24, and the driven wheel 22 is passed through the tapered bearing 24 of the driven transmission shaft 2; the outer shell S is also provided with a tapered bearing seat S2 , the tapered bearing 24 of the driven transmission shaft 2 is installed in the tapered bearing seat S2. Thereby, when the driven wheel 22 is pushed by the reciprocating output shaft 21 , it can move along the second axis B correspondingly.

[Possible effects of the embodiment]

To sum up, the indexing device and the cam transmission shaft provided by the utility model can have the following beneficial effects:

The utility model provides an integrally formed cam transmission shaft, the first cam of which is formed by extending the input shaft, so it has high manufacturing precision and can achieve low error value when the indexing application device is operated.

Furthermore, the groove structure of the first cam of the present invention is provided with a straight section and a curved section to provide intermittent movement of the driven transmission shaft.

In addition, the utility model also includes a rocker arm, and the second cam is provided with an elliptical flange, so the rocker arm can drive the output shaft to perform periodic reciprocating motion through the elliptical flange.

To sum up, the utility model actually meets the requirements of a utility model patent, and the application is filed according to law. However, the content disclosed above is only the preferred embodiment of the utility model, and cannot limit the scope of the claims of the utility model. Therefore, the equivalent changes or modifications made according to the application scope of the utility model still belong to the utility model. the scope covered.

Claims (7)

1. A kind of indexing device, is installed in a shell, is characterized in that, described indexing device comprises: A cam transmission shaft, the cam transmission shaft includes an input shaft, a first cam and a second cam, the input shaft passes through the housing, the first cam and the second cam are formed by the The input force shaft is formed extending along the radial direction, the first cam is provided with a plurality of groove structures spaced around, and the second cam is provided with an elliptical flange; A driven transmission shaft, the driven transmission shaft is adjacent to the cam transmission shaft, the driven transmission shaft includes an output shaft and a driven wheel, and the driven wheel sleeve is placed on the output shaft, so The driven wheel is surrounded by a plurality of rotors, and the rotors are rotatably engaged with the groove structure in sequence; and A rocker arm, the rocker arm is bent at 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 The elliptical flange can be clamped together in a rolling manner, and the locking part is locked to the outer casing. 2. The indexing device according to claim 1, wherein each of the groove structures has a straight line and a curved line, and each straight line is connected with the corresponding curved line to provide The intermittent rotation of the driven wheel. 3. The indexing device according to claim 1, wherein the driven transmission shaft further comprises a tapered bearing, and the driven wheel passes through the tapered bearing of the driven transmission shaft; the housing The body is also provided with a tapered bearing seat, and the tapered bearing of the driven transmission shaft is installed in the tapered bearing seat. 4. The indexing device according to any one of claims 1 to 3, characterized in that, the cam drive shaft further comprises two tapered bearings, and the two ends of the input shaft respectively pass through the cam drive shaft. In the two tapered bearings of the shaft, and the two tapered bearings of the cam transmission shaft are respectively installed on two corresponding side walls of the outer casing. 5. The indexing device according to any one of claims 1 to 3, wherein the driven transmission shaft further comprises a ball bearing, and the output shaft passes through the ball bearing; the The outer casing is provided with a ball bearing seat, and the ball bearing is installed in the ball bearing seat. 6. A cam drive shaft, applied to an indexing device, is characterized in that, the cam drive shaft comprises: an input shaft; A first cam, the first cam is formed by extending the input shaft along the radial direction, and the first cam is surrounded by a plurality of groove structures at intervals; and A second cam, the second cam is formed by extending the input shaft along the radial direction, and the second cam is provided with an elliptical flange. 7 . The cam drive shaft according to claim 6 , wherein each of the groove structures has a straight line segment and a curved line segment, and each straight line segment is connected to a corresponding curved line segment.

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