Cam groove shaft type variable distance linear module

Abstract

The present application relates to a kind of cam groove axle type variable linear module, comprising: fixed seat;Drive mechanism, is set on fixed seat;Cam groove axle is connected with the output shaft of drive structure, the cam groove is equipped on the cam groove axle;Slider, the slider bottom end is fixed with cam follower, and the cam follower is slidably connected with the cam groove;Connecting rod, is fixed on the cam groove axle upside, the connecting rod is equipped with the slider of sliding connection with connecting rod, the shape of the spherical cam follower can reduce the size requirement to cam groove, meanwhile, the cam follower is equipped with gap elimination device, and the clearance between cam follower and cam groove can be eliminated using eccentric shaft.

Description

Technical Field

[0001] This invention relates to the field of linear module technology, specifically a cam groove shaft type variable pitch linear module. Background Technology

[0002] Cam-groove shaft type variable pitch modules can achieve pitch changes for multiple suction heads or cylinders, which can be equal or unequal. When handling multiple loads (more than four), cam-groove shaft type variable pitch modules are more compact and economical than other structures. With the development of automation technology, cam-groove shaft type variable pitch modules have been widely used in various equipment.

[0003] Traditional cam follower shapes require high precision in the cam groove dimensions. Furthermore, the clearance fit error between the cam groove and the cam follower is a key factor affecting transmission accuracy. If the cam groove and cam follower fit too tightly, the friction between them will be too great, making the movement prone to jamming. If the fit is too loose, the large gap between them will cause backlash, affecting transmission accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a cam groove shaft type variable pitch linear module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cam groove shaft type variable pitch linear module, comprising: a fixed base; a drive mechanism disposed on the fixed base; a cam groove shaft connected to the output shaft of the drive mechanism, wherein the cam groove shaft is provided with a cam groove; a slider, wherein a cam follower is fixed at the bottom end of the slider and the cam follower is slidably connected to the cam groove; and a connecting rod fixed to the upper side of the cam groove shaft, wherein a slider slidably connected to the connecting rod is sleeved on the connecting rod.

[0006] Optionally, the driving mechanism is a drive motor.

[0007] Optionally, the outer diameter surface of the cam follower is a spherical surface.

[0008] Optionally, the cam follower includes a bearing shaft connected to the slider, the bearing shaft being connected to a first bearing, the first bearing being connected to a second bearing via a bearing fixing shaft, and an eccentric shaft being fitted inside the second bearing.

[0009] Optionally, the distance between the center of the bearing fixed shaft and the eccentric shaft is matched with the clearance between the cam groove and the cam follower.

[0010] Optionally, the cam groove shaft is made of aluminum alloy.

[0011] Optionally, a connecting sleeve is provided between the slider and the connecting rod.

[0012] Optionally, the mounting base is integrally formed.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The cam groove shaft type variable pitch linear module of the present invention can reduce the dimensional accuracy requirements of the cam groove through its spherical cam follower, and the movement is smoother;

[0015] 2. The cam groove shaft type variable pitch linear module of the present invention has a cam follower equipped with a gap elimination device. The gap between the cam follower and the cam groove can be eliminated by using an eccentric shaft structure, thereby improving the transmission accuracy.

[0016] 3. The cam groove shaft type variable pitch linear module of the present invention has an integrally formed fixed base, which can reduce installation costs and extend service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram showing the position of the cam follower of the present invention;

[0019] Figure 3 This is a schematic diagram of the shape of the cam follower of the present invention;

[0020] Figure 4 This is a perspective view of the cam follower of the present invention. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] like Figure 1-4 As shown, a cam-groove shaft type variable pitch linear module includes: a fixed base 100; a drive mechanism 200 disposed on the fixed base 100; a cam groove shaft 300 connected to the output shaft of the drive mechanism 200, wherein the cam groove shaft 300 is provided with a cam groove 400; a slider 500, wherein a cam follower 600 is fixed at the bottom end of the slider 500 and the cam follower 600 is slidably connected to the cam groove 400; a connecting rod 700 fixed to the upper side of the cam groove shaft 300, wherein the slider 500 is sleeved on the connecting rod 700 and slidably connected to the connecting rod 700; the drive mechanism 200 is a drive motor, and the drive mechanism 200 drives the cam groove shaft 300 to rotate, thereby driving the slider 500 to move through the cam follower 600 and the cam groove 400.

[0023] The outer diameter surface of the cam follower 600 is a spherical surface. Using the above shape can reduce the size requirements of the cam groove 400.

[0024] The cam follower 600 includes a bearing shaft 601 connected to the slider 500. The bearing shaft 601 is connected to a first bearing 602. The first bearing 602 is connected to a second bearing 604 via a bearing fixing shaft 603. An eccentric shaft 605 is sleeved inside the second bearing 604.

[0025] The axial distance between the bearing fixed shaft 603 and the eccentric shaft 605 is matched with the gap between the cam groove 400 and the cam follower 600. The eccentric shaft 605 can eliminate the gap between the cam follower 600 and the cam groove 400 when rotating.

[0026] The cam groove shaft 300 is made of aluminum alloy. After surface treatment, the surface hardness is improved, which increases the life of the variable pitch module.

[0027] To reduce frictional resistance during movement, a connecting sleeve 800 is provided between the slider 500 and the connecting rod 700.

[0028] The fixed base 100 is integrally formed, which can reduce installation costs and extend service life.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A cam slot shaft type variable pitch linear module, characterized by, include: Fixture (100); A drive mechanism (200) is mounted on a fixed base (100); A cam groove shaft (300) is connected to the output shaft of the drive mechanism (200), and a cam groove (400) is provided on the cam groove shaft (300); A slider (500) is provided, and a cam follower (600) is fixed to the bottom end of the slider (500). The cam follower (600) is slidably connected to the cam groove (400). A connecting rod (700) is fixed on the upper side of the cam groove shaft (300), and a slider (500) that is slidably connected to the connecting rod (700) is sleeved on the connecting rod (700); The driving mechanism (200) is a drive motor; The outer diameter surface of the outer ring of the cam follower (600) is a spherical surface; The cam follower (600) includes a bearing shaft (601) connected to the slider (500), the bearing shaft (601) being connected to a first bearing (602), the first bearing (602) being connected to a second bearing (604) via a bearing fixing shaft (603), and an eccentric shaft (605) being fitted inside the second bearing (604). The distance between the center of the bearing fixed shaft (603) and the eccentric shaft (605) is matched with the gap between the cam groove (400) and the cam follower (600).

2. The cam slot shaft type variable pitch linear module according to claim 1, wherein The cam groove shaft (300) is made of aluminum alloy.

3. The cam slot shaft type variable pitch linear module according to claim 2, wherein A connecting sleeve (800) is provided between the slider (500) and the connecting rod (700).

4. A cam groove shaft type variable pitch linear module according to claim 3, characterized in that, The fixing base (100) is integrally formed.

Images