TW202037827A - Double-track cam roller sliding table includes a linear rail and a roller mounting plate arranged on a linear rail fixing seat - Google Patents

Abstract

The invention is a double-track cam roller sliding table, which includes a linear rail and a roller mounting plate arranged on a linear rail fixing seat. The roller mounting plate is provided with more than one roller, and the roller on the roller mounting plate is evenly distributed in the lengthways; the seat plate is provided with a sliding block fixing seat, the sliding block fixing seat is fixedly connected with a scroll-type cam fixing seat, and a scroll-type cam is rotatably supported on the scroll-type cam fixing seat. A helical tooth is distributed on the lead screw on the surface of the scroll-type cam. A helical groove is formed between each axial pitch of the helical tooth. The diameter of the helical groove and the roller are equal, so that the spiral groove and the roller provided on the roller mounting plate are matched with each other. Thereby, all the helical teeth on the scroll-type cam will contact the rollers on the roller mounting plate, and there are multiple contact line sets between the scroll-type cam and roller mounting plate, so as to increase the contact area. At the same time, multiple contact lines are evenly distributed along the length of the roller mounting plate, which makes the transmission of motion more stable and can also carry larger loads.

Description

Double track cam roller slide

The invention relates to a sliding table, in particular to a double-track cam roller sliding table.

Press, the linear slide is a mechanical structure that can provide linear motion, which can be horizontal or vertical It can also be combined into a specific motion mechanism, which is usually called XY axis, XYZ axis and other multi-axial motion mechanisms in the automation industry. Generally speaking, a linear sliding table will have a driving part and a sliding part. The driving parts of the traditional linear sliding table are various, but these (transmission parts) are exposed to different problems during use: 1. Hydraulic lifting structure. The piston of the hydraulic cylinder will wear the oil seal after long-term use, resulting in oil leakage in the hydraulic cylinder, and the problem of falling during vertical lifting movement is likely to occur, which poses a safety hazard. 2. Lead screw nut structure. The lead screw nut structure is used as a transmission part, and its working stroke is limited by the length of the lead screw. If long-stroke motion transmission is required, a longer lead screw is required, which is relatively expensive, and the lead screw nut structure is realized as a transmission part During longitudinal movement, there are still certain safety hazards when the drive motor is stopped. 3. Sling and steel cable structure. If this type of structure is used for a long time and is not overhauled, there is a risk of cable breakage. 4. Gear rack structure. In the working process of the gear tooth row transmission part, there are always only three tooth surfaces on the gear in contact with the teeth on the tooth row. At the moment of starting or stopping, the transmission sound is loud and noise is generated; and the gap between the gear and the tooth row The contact surface is positively small (in fact, the two are only in line contact). On the one hand, stress concentration will occur, which will severely limit the overall load of the sliding table. On the other hand, it will also affect the overall service life of the sliding table. Therefore, there is a need for a method or device that can solve the above-mentioned problems. In order to solve the above-mentioned shortcomings in the prior art, the present invention proposes a sliding table with simple structure, ingenious design, reasonable layout, high safety factor, and heavy load. The technical solution of the present invention is: a double-track cam roller sliding table, which is characterized in that: a sliding table includes a linear rail fixing seat, a linear rail and a roller mounting plate are arranged on the linear rail fixing seat, and the roller mounting plate is arranged There are a plurality of evenly distributed teeth, the sliding table is provided with a sliding block fixing seat, the sliding block fixing seat is fixedly connected with a worm-type cam fixing seat, and the worm-type cam fixing seat is rotatably supported by a vortex cam The type cam and the roller of the roller mounting plate are matched with each other. A servo motor is arranged on the worm-type cam fixing seat. The servo motor is connected to the end of the worm-type cam through a pulley transmission member. At least two supporting parts are provided, the top ends of all supporting parts jointly support a mobile working platform, and the bottom end of the vortex cam fixing seat is provided with a sliding block, and the sliding block is slidably connected to the line rail. The linear rails are two parallel to each other, the roller mounting plate is located between the two linear rails or there can be one linear rail, and the roller mounting plate is located above the linear rail. Compared with conventional devices, the present invention has the following advantages: The double-track cam roller sliding table has a simple structure, ingenious design and reasonable layout. It has designed a special sliding table for the various problems caused by traditional sliding tables that use cam roller transmission parts for motion transmission. The structure, it creatively designs a roller of the roller mounting plate that can be engaged with the vortex cam for transmission. When the vortex cam rotates, it can move relative to the roller mounting plate, and then the motor The torque output is converted into linear motion. Compared with the traditional rack-and-pinion transmission mechanism, the vortex cam is in contact with multiple rollers at any time in this transmission mechanism, that is, there are many gaps between the vortex cam and the rollers of the roller mounting plate. The number of contact lines depends on the number of spiral teeth on the vortex cam. Therefore, the designer can determine the number of spiral teeth according to the design requirements to achieve the purpose of adjusting the number of contact lines. The more the number of contact wires, the greater the load that the sliding table can bear and the stronger the self-locking ability. Therefore, even if the motor stops, the sliding table will not fall in the vertical direction. At the same time, the sound produced by this sliding table is extremely small during operation, and it can realize high-torque rotation and high-speed buffer positioning of large loads; the effective stroke of this sliding table depends on the length of the roller mounting plate, because the roller mounting plate and The roller structure is relatively simple, so in theory, this sliding table can achieve any length of stroke. Moreover, the manufacturing process of this sliding table is simple and the manufacturing cost is low. Therefore, it can be said that it has a variety of advantages and is particularly suitable for popularization and application in this field. Its practicality and prospectiveness are also very favorable.

Therefore, in view of the problems of the above-mentioned conventional structure, how to develop a more rational If you want a practical and innovative structure, and actually use what consumers are eagerly awaiting, it is also the goal and direction for the relevant industry to strive for research and breakthrough. In view of this, the inventor of this case, based on years of design experience, designed the components of the present invention in detail, and after actual and prudential evaluation, finally obtained a practical invention.

That is, the main purpose of the present invention is to solve the above-mentioned shortcomings in the prior art , A double-track cam roller slide with simple structure, ingenious design, reasonable layout, high safety factor, heavy load and long service life is proposed.

The technical solution of the present invention is a double-track cam roller slide, which includes a line The rail fixing seat includes a plate, the seat plate is provided with at least one linear rail and a roller mounting plate, wherein the linear rails are two parallel to each other, and the roller mounting plate can be set between the two linear rails , The roller mounting plate is provided with more than one roller, and the rollers are evenly distributed in the length direction of the roller mounting plate, and the seat plate is provided with a sliding block fixing seat, and the sliding block fixing seat is fixedly connected There is a worm-type cam fixing seat, and a vortex-type cam is rotatably supported on the vortex-type cam fixing seat. A spiral tooth is distributed on the surface of the worm-type cam, and a spiral is formed between each axial pitch of the helical tooth Groove, the diameter of the spiral groove is equal to the diameter of the roller, so that the spiral groove and the roller provided on the roller mounting plate are matched with each other, the vortex cam fixing seat is provided with a servo motor, one end of the servo motor A transmission shaft is provided, the scroll cam is provided with a second shaft end opposite to one end of the transmission shaft, the servo motor is connected to the transmission shaft and the second shaft end through a transmission belt, and at least A supporting part, and the top ends of all supporting parts jointly support and move a working platform, and a plurality of sliding blocks are arranged at the relative positions of the bottom end of the sliding block fixing seat and the linear rail, and each sliding block is slidably connected to the linear rail.

Please refer to Figures 1 to 5, which are the preferred implementation of the double-track cam roller slide of the present invention For example, these examples are for illustrative purposes only, and are not restricted by this structure in patent applications, which include:

A linear rail fixing seat 10, including a plate 11, the seat plate 11 is provided with at least one linear rail 12 and A roller mounting plate 14, in this embodiment, the linear rails 12 are two parallel to each other, and the roller mounting plate 14 is located between the two linear rails 12, the roller mounting plate 14 is provided with more than one The rollers 141 are evenly distributed in the length direction of the roller mounting plate 14, and the roller 141 pivots with a bearing 142 relative to the axial position of the roller mounting plate 14, so that the roller 141 is opposite The roller mounting plate 14 is pivoted, and the seat plate 11 is provided with a sliding block fixing seat 20, and the sliding block fixing seat 20 is fixedly connected with a scroll-type cam fixing seat 30, and the scroll-type cam fixing seat 30 A vortex cam 50 is supported for upper rotation. A spiral tooth 51 is distributed on the surface of the worm cam 50. A spiral groove 511 is formed between each axial pitch of the spiral tooth 51, so that the spiral groove 511 and the roller The diameters of the sub 141 are equal, so that the spiral groove 511 and the roller 141 provided on the roller mounting plate 14 cooperate with each other. A servo motor 40 is provided on the scroll cam fixing base 30, and one end of the servo motor 40 is provided. The drive shaft 41. The worm-type cam 50 is provided with a second shaft end 53 opposite to one end of the drive shaft 41. The servo motor 40 is connected to the drive shaft 41 and the second shaft end 53 through a drive belt 70. The cam fixing base 30 is further provided with a motor fixing portion 34 and a scroll-type cam fixing portion 35 for pivotally positioning the transmission shaft 41 and the second shaft end 53. The slider fixing base 20 is provided with at least one The supporting portion 23, and the top ends of all supporting portions 23 jointly support and move a working platform 60, and the bottom end of the sliding block fixing seat 20 is provided with a plurality of sliding blocks 13 relative to the linear rail 12, and each sliding block 13 is slidably connected On the linear rail 12, a guide rail 121 is respectively provided on both sides of the linear rail 12, and the slider 13 is provided with a sliding groove 131 corresponding to the guide rail 121, so that the guide rail 121 is arranged in the sliding groove Within 131.

Then the top of each slider 13 is provided with a plurality of connecting ends 132, and the slider fixing seat 20 corresponds to The connecting end 132 of each slider 13 is provided with a corresponding connecting portion 22. The connecting end 132 and the connecting portion 22 are fixedly connected by a bolt S through threading; and the top of the slider fixing seat 20 is provided with a plurality of The screwed end 25, and the worm-type cam fixing seat 30 is provided with a corresponding screwed portion 32 corresponding to the screwed end 25 of the slider fixing seat 20, and the screwed end 25 and the screwed portion 32 are connected by A bolt S is threaded and fixedly connected; and the top end of the support portion 23 is provided with a set of end 24, and the working platform 60 is provided with a corresponding set portion 61 corresponding to the set end 24 of the support portion 23. The end 24 and the assembly portion 61 are fixedly connected by a bolt S through a screw; and the vortex cam holder 30 is provided with a shaft assembly end 33 at the center of one end, and the vortex cam 50 corresponds to the shaft assembly The end 33 is provided with a first shaft end 52, so that the first shaft end 52 is pivotally positioned on the shaft group end 33;

Furthermore, the sliding block holder 20 is provided with a long slot hole corresponding to the position of the scroll cam 50 21, and the scroll-type cam fixing seat 30 is provided with a long slot 31 corresponding to the long slot 21, and the long slot 21 and the long notch 31 can allow the scroll-type cam 50 to penetrate and extend to fit the Each of the rollers 141 of the roller mounting plate 14.

The working process of the double-track cam roller slide of the embodiment of the present invention is as follows: The workpiece B to be carried is placed on the moving work platform 60, and then the servo motor 40 is started. The servo motor 40 drives the scroll cam 50 to rotate through the pulley drive. Because the scroll cam 50 and the roller mounting plate 14 have more than one The rollers 141 are engaged with each other, so when the scroll cam 50 rotates, the entire sliding block holder 20 is driven to move relative to the roller mounting plate 14. In this process, the sliding block 13 slides on the linear rail 12 to achieve The purpose of converting the torque output of the servo motor 40 into linear output;

The invention uses the spiral between the axial pitch of all the spiral teeth 51 on the scroll cam 50 The grooves 511 are in contact with the rollers 141 on the roller mounting plate 14. Therefore, during the above movement, there are multiple contact lines between the scroll cam 50 and the rollers 141 on the roller mounting plate 14. Compared with traditional gear and rack transmission parts, not only the contact area is increased, but multiple contact lines are evenly distributed in the length direction of the roller mounting plate 14, so that the transmission of motion is more stable, and the load can also be larger. Load.

Summarizing the above description, the design of the above structure of the present invention can effectively overcome the conventional The deficiencies faced by the invention further have the above-mentioned numerous advantages and practical values. Therefore, the present invention is an extremely creative invention, and there is no identical or similar product creation or public use in the same technical field, so the present invention It has met the "novelty" and "progressive" requirements of an invention patent, and an application is filed in accordance with the law.

10: Linear rail fixing seat 11: Seat plate 12: Line rail 121: Rail part 13: Slider 131: Chute 132: link end 14: Roller mounting plate 141: Roller 142: Bearing 20: Slider holder 21: Long slot 22: Connection part 23: Support 24: assembly terminal 25: Screw end 30: Scroll cam holder 31: Long notch 32: Screw part 33: Shaft end 34: Motor fixed part 35: Scroll cam fixing part 40: Servo motor 41: drive shaft 50: scroll cam 51: helical tooth 511: Spiral tooth 52: The first shaft end 53: second shaft end 60: work platform 61: Assembly Department 70: Transmission belt S: Bolt B: Workpiece

Figure 1: A perspective view of the double-track cam roller slide of the present invention. Figure 2: An exploded perspective view of the double-track cam roller slide of the present invention. Figure 3: A longitudinal sectional view of the double-track cam roller slide of the present invention. Figure 4: is a transverse cross-sectional view of the double-track cam roller slide of the present invention. Figure 5: is a partial cross-sectional view of part A of Figure 4.

12: Line rail

13: Slider

14: Roller mounting plate

141: Roller

142: Bearing

20: Slider holder

21: Long slot

23: Support

24: assembly terminal

31: Long notch

40: Servo motor

50: scroll cam

60: work platform

61: Assembly Department

S: Bolt

Claims (8)

A double-track cam roller sliding table, including: A linear rail fixing seat, including a plate, the seat plate is provided with at least one linear rail and a roller mounting plate, wherein the linear rails are two parallel to each other, and the roller mounting plate can be installed between the two linear rails In between, the roller mounting plate is provided with more than one roller, and the rollers are evenly distributed in the length direction of the roller mounting plate, and the seat plate is provided with a sliding block fixing seat, and the sliding block fixing seat is fixed A worm-type cam fixing seat is connected, and a vortex-type cam is rotatably supported on the vortex-type cam fixing seat. A spiral tooth is distributed on the surface of the worm-type cam. The axial tooth pitch of the helical tooth forms a Spiral groove, the diameter of the spiral groove and the roller are equal, so that the spiral groove and the roller provided on the roller mounting plate cooperate with each other, the vortex cam fixing seat is provided with a servo motor, the servo motor One end is provided with a drive shaft, the scroll cam is provided with a second shaft end opposite to one end of the drive shaft, the servo motor is connected to the drive shaft and the second shaft end through a drive belt, and the slider fixing seat is provided with a second shaft end. At least one supporting part, and the top ends of all supporting parts jointly support and move a working platform, and the bottom end of the sliding block fixing seat is provided with a number of sliding blocks relative to the linear rail, and each sliding block is slidably connected to the linear rail . For example, the double-track cam roller sliding table described in item 1 of the scope of patent application, wherein the linear rail fixing seat is provided with a guide rail on both sides of the linear rail, and the slider is provided with a sliding groove corresponding to the guide rail. The guide rail part is arranged in the sliding groove. The double-track cam roller sliding table described in item 1 of the scope of patent application, wherein the top of each slider is provided with a plurality of connecting ends, and the slider fixing seat is provided with a corresponding connecting end corresponding to the connecting end of each slider Part, the connecting end and the connecting part are fastened and connected by a bolt through threading. For the double-track cam roller sliding table described in item 1 of the scope of patent application, the top of the sliding block fixing seat is provided with a plurality of screw fixing ends, and the scroll-type cam fixing block corresponds to the screw fixing end of the sliding block fixing block A corresponding screw fixing part is provided, and the screw fixing end and the screw fixing part are fastened and connected by a bolt through the screw. For the double-track cam roller sliding table described in item 1 of the scope of patent application, a set of end is provided at the top of the support part, and the work platform is provided with a corresponding set part at the end of the support part. The assembling end and the assembling part are fixedly connected by a bolt through the screw. For the double-track cam roller sliding table described in item 1 of the scope of patent application, the vortex cam holder is provided with a shaft group end at the center of one end, and the worm type cam has a first shaft group end corresponding to the shaft group end. The shaft end makes the first shaft end pivotally positioned at the shaft group end. For the double-track cam roller sliding table described in item 1 of the scope of patent application, a long slot hole is formed through the slider fixing seat corresponding to the position of the scroll cam, and the scroll cam fixing seat corresponds to the long groove The hole is provided with a long notch, and the long slot and the long notch can allow the scroll cam to penetrate and extend to match each of the rollers of the roller mounting plate. The double-track cam roller sliding table described in the first item of the scope of patent application, wherein the roller has a bearing pivoted relative to the axis of the roller mounting plate.

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