CN217123174U

CN217123174U - Linear module is got to work piece clamp

Info

Publication number: CN217123174U
Application number: CN202220735436.5U
Authority: CN
Inventors: 蒲志国; 张光平; 李交贤; 罗元强
Original assignee: Sichuan Hemosheng Technology Co ltd
Current assignee: Sichuan Hemosheng Technology Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-08-05
Anticipated expiration: 2032-03-29

Abstract

The utility model provides a sharp module is got to work piece clamp, including the base, be provided with driving motor on the above-mentioned base, above-mentioned driving motor is connected with the lead screw, and the above-mentioned lead screw left and right sides has opposite screw thread of turning to respectively, and the lead screw both ends are rotated and are set up on the base. The two ends of the base are movably provided with sliding tables, screw holes are formed in the sliding tables, and the two sliding tables are respectively sleeved on the left side and the right side of the screw rod through the screw holes. And a clamping device is arranged on the sliding table. The utility model discloses a motor drive lead screw is control anchor clamps just reversing toward intermediate motion or toward both ends motion simultaneously, realizes that the clamp of great load work piece gets, has improved the precision that the clamp of work piece got simultaneously.

Description

Linear module is got to work piece clamp

Technical Field

The utility model relates to an equipment manufacturing technical field particularly, relates to a straight line module is got to work piece clamp.

Background

The linear module is a universal element for converting rotary motion into linear motion, has the characteristics of high repeated positioning precision, small reverse clearance and long service life, is widely applied to different industrial fields such as cutting, carving, marking, carrying and the like along with the rapid development of industrial automation, and is continuously developed and innovated.

Most of the existing mechanical arm fixtures are low in clamping precision and cannot meet the requirement for clamping of high-precision large-scale workpieces.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sharp module is got to work piece clamp, its load and the precision that can increase anchor clamps.

The embodiment of the utility model is realized like this:

the embodiment of the application provides a sharp module is got to work piece clamp, including the base, be provided with driving motor on the above-mentioned base, above-mentioned driving motor is connected with the lead screw, and the above-mentioned lead screw left and right sides has the opposite screw thread of turning to respectively, and the lead screw both ends are rotated and are set up on the base. The two ends of the base are movably provided with sliding tables, screw holes are formed in the sliding tables, and the two sliding tables are respectively sleeved on the left side and the right side of the screw rod through the screw holes. And a clamping device is arranged on the sliding table.

In some embodiments of the present invention, a protruding strip parallel to the screw rod is provided on the base, the sliding table is provided with a limiting slide rail corresponding to the protruding strip, and the protruding strip is disposed in the limiting slide rail.

The utility model discloses an in some embodiments, above-mentioned spacing slide rail is twice, and spacing slide rail based on above-mentioned lead screw symmetry respectively set up in above-mentioned slip table. The convex strips are arranged into two corresponding to the limiting slide rail, and the two convex strips are respectively arranged on two sides of the lower end face of the base.

The utility model discloses an in some embodiments, above-mentioned clamping device includes the pressure strip, connects a plurality of evenly distributed's pressure pole perpendicularly on the above-mentioned pressure strip, and the one end that above-mentioned pressure pole kept away from above-mentioned pressure strip is provided with the mounting panel, and above-mentioned slip table lower extreme face is connected to above-mentioned mounting panel side.

In some embodiments of the present invention, two pressure plates in parallel are disposed between the pressing plate and the mounting plate, a pressure sensor is disposed between the pressure plates, and the pressure sensor is electrically connected to the driving motor. The pressure rod penetrates through the pressure plate, and a fastening bolt is arranged at the joint of the pressure plate and the mounting plate.

In some embodiments of the present invention, a linear bearing is sleeved on the pressure rod, and the linear bearing is located between the pressure plate and the mounting plate.

In some embodiments of the present invention, a rubber cushion layer is disposed on the surface of the pressing plate.

The utility model discloses an in some embodiments, be provided with drive assembly between above-mentioned driving motor and lead screw, driving motor and lead screw are connected respectively to above-mentioned drive assembly both ends.

In some embodiments of the present invention, the transmission assembly includes a first synchronizing wheel and a second synchronizing wheel, the first synchronizing wheel is connected to the driving motor, and the second synchronizing wheel is sleeved on the end of the screw rod. The first synchronizing wheel and the second synchronizing wheel are sleeved with a synchronizing belt. The first synchronous wheel, the second synchronous wheel and the periphery of the synchronous belt are sleeved with protective covers.

In some embodiments of the present invention, the two ends of the screw rod are both provided with rolling bearings, and the outer wall of the rolling bearing is connected with the base and the inner wall of the rolling bearing is connected with the outer wall of the screw rod.

Compared with the prior art, the embodiment of the utility model has following advantage or beneficial effect at least:

the utility model discloses a two bilateral symmetry slip tables are connected to positive and negative tooth lead screw, through the positive and negative control anchor clamps of motor drive lead screw toward intermediate motion or toward both ends motion simultaneously, realize that the clamp of great load work piece gets, have improved the precision that the clamp of work piece got simultaneously. Through pressure sensor and driving motor's cooperation, operation that can convenient to use person promotes the operation sensitivity, and then promotes work efficiency. Through the sliding fit of the convex strips and the limiting sliding rails, the stability of linear movement of the sliding table can be improved while the sliding table is limited to shake or move.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the structural schematic diagram of the sliding table of the present invention.

Fig. 3 is a schematic structural view of the pressing device of the present invention.

Fig. 4 is a schematic view of the structure of the transmission assembly of the present invention.

Icon: 1-a base, 2-a driving motor, 3-a lead screw, 4-a sliding table, 5-a clamping device, 6-a transmission assembly, 301-a rolling bearing, 401-a limiting sliding rail, 402-a screw hole, 501-a pressing plate, 502-a pressure plate, 503-a mounting plate, 504-a linear bearing, 505-a pressure rod, 506-a pressure sensor, 507-a rubber cushion layer, 508-a fastening bolt, 601-a first synchronous wheel, 602-a second synchronous wheel, 603-a synchronous belt and 604-a protective cover.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

The embodiment provides a sharp module is got to work piece clamp, including base 1, is provided with driving motor 2 on the above-mentioned base 1, and above-mentioned driving motor 2 is connected with lead screw 3, and the above-mentioned lead screw 3 left and right sides has the opposite screw thread of turning to respectively, and 3 both ends of lead screw rotate and set up on base 1. The two ends of the base 1 are movably provided with sliding tables 4, the sliding tables 4 are provided with screw holes 402, and the two sliding tables 4 are respectively sleeved on the left side and the right side of the screw rod 3 through the screw holes 402. The sliding table 4 is provided with a clamping device 5.

The rotor connecting shaft of the driving motor 2 may be directly connected to the lead screw 3, but in the rotation process of the driving motor 2, the driving motor 2 may be damaged due to the fact that the lead screw 3 is connected to the base 1 and the lead screw 3 is jammed, so as to improve the driving stability and safety of the driving motor 2, as shown in fig. 4, a transmission assembly 6 may be disposed between the driving motor 2 and the lead screw 3, and two ends of the transmission assembly 6 are respectively connected to the driving motor 2 and the lead screw 3.

Specifically, as shown in fig. 4, the lead screw 3 is not directly connected to the rotor of the driving motor 2, so that the driving motor 2 drives the lead screw 3 through the transmission assembly 6, and in order to improve the transmission stability, the transmission assembly 6 may preferably include a first synchronizing wheel 601 and a second synchronizing wheel 602, the first synchronizing wheel 601 is connected to the driving motor 2, and the second synchronizing wheel 602 is sleeved on the end of the lead screw 3. A timing belt 603 is sleeved around the first timing wheel 601 and the second timing wheel 602.

Gear teeth with the same size and specification are arranged on the outer walls of the first synchronizing wheel 601 and the second synchronizing wheel 602, tooth grooves corresponding to the gear teeth are formed in the inner wall of the synchronous belt 603, so that the first synchronizing wheel 601 is driven to rotate when the driving motor 2 rotates, meanwhile, the synchronous belt 603 is driven to rotate at a constant speed by the first synchronizing wheel 601 through the matching of the gear teeth and the tooth grooves in the synchronous belt 603, the second synchronizing wheel 602 rotates along with the rotation of the synchronous belt 603, the rotating second synchronizing wheel 602 drives the lead screw 3 to stably rotate, and the process of stably driving the lead screw 3 by the driving motor 2 is further achieved.

In order to protect the transmission assembly 6 from being affected by foreign matters in the external environment and avoid safety problems, protective covers 604 may be sleeved on the peripheries of the first synchronizing wheel 601, the second synchronizing wheel 602 and the synchronizing belt 603, and the protective covers 604 may completely cover the entire transmission assembly 6 in a bolt connection manner, thereby improving the reliability and safety of the entire device.

The length of the lead screw 3 is matched with the length of the base 1, the two ends of the lead screw 3 are rotatably connected to the two ends of the base 1, the lead screw can perform rotary motion relative to the base 1, and the lead screw 3 cannot perform displacement in the horizontal direction or the vertical direction under the limiting action of the base 1. And the threads with opposite turning directions on the left side and the right side of the screw rod 3 are mutually adaptive to the inner threads in the corresponding screw holes 402, so that the sliding tables 4 on the two sides of the screw rod 3 can be ensured to linearly move in an opposite or back-to-back manner under the action of the threads.

In order to enable the lead screw to rotate relatively stably with respect to the base 1, as shown in fig. 4, rolling bearings 301 are provided at both ends of the lead screw 3, the outer wall of the rolling bearing 301 is connected to the base 1, and the inner wall of the rolling bearing 301 is connected to the outer wall of the lead screw 3. Through the arrangement of the rolling bearing 301, the sliding friction force between the screw rod 3 and the base 1 can be effectively reduced, and the rotation efficiency of the screw rod 3 is improved.

It should be noted that, if only the lower end of the base 1 is used to limit the upper end of the sliding table 4, the sliding table 4 may shake or slightly move during the linear sliding process relative to the base 1, and generate a large sliding friction force, which will greatly hinder the operation of the whole module, so as to be shown in fig. 1 and 3, the base 1 is provided with a protruding strip parallel to the screw rod 3, the sliding table 4 is provided with a limit slide rail 401 corresponding to the protruding strip, and the protruding strip is disposed in the limit slide rail 401. Preferably, the number of the limiting slide rails 401 may be two, and the limiting slide rails 401 are respectively symmetrically disposed on the sliding table 4 based on the lead screw 3. The protruding strips are arranged in two corresponding to the limiting slide rail 401, and the two protruding strips are respectively arranged on two sides of the lower end surface of the base 1.

Specifically, above-mentioned sand grip cross section profile sets up to the I-shaped, and above-mentioned spacing slide rail 401 cross section profile also sets up to the I-shaped with sand grip assorted, and spacing slide rail 401 inner wall is smooth setting with the sand grip outer wall, can guarantee that the sand grip reduces sliding friction power when sliding in spacing slide rail 401, and then promotes slip table 4 and carry out rectilinear movement's stability.

In order to enable the clamping device 5 to clamp the workpiece more stably and accurately, as shown in fig. 3, the clamping device 5 includes a pressing plate 501, a plurality of evenly distributed pressure rods 505 are vertically connected to the pressing plate 501, an installation plate 503 is disposed at an end of the pressure rod 505 away from the pressing plate 501, and a side end of the installation plate 503 is connected to a lower end surface of the sliding table 4. The two ends of the pressure rod 505 are respectively fixed between the mounting plate 503 and the pressing plate 501 in a bolt connection manner, the pressure rod 505 is made of high-strength alloy material, such as alloy steel, and the uniform connection of the pressure rods 505 enables the load distribution on the mounting plate 503 to be uniform when the pressing plate 501 abuts against a workpiece, thereby improving the stability of workpiece clamping.

Specifically, as shown in fig. 3, two pressure plates 502 are provided in parallel between the pressure plate 501 and the mounting plate 503, a pressure sensor 506 is provided between the pressure plates 502, and the pressure sensor 506 is electrically connected to the drive motor 2. The pressure rod 505 penetrates the pressure plate 502, and a fastening bolt 508 is provided at a connection point of the pressure rod 505 and the mounting plate 503. The pressure rod 505 and the pressure plate 502 are fitted in an interference fit manner, so that when the pressure rod 505 receives a reaction force of clamping a workpiece, the pressure rod 505 can apply an equal amount of force to the pressure plate 502, and the pressure plate 502 can transmit the force to the pressure sensor 506 to detect the pressure in real time.

Above-mentioned pressure sensor 506 can be current piezoresistive pressure sensor 506, and the electricity is connected with current sensor controller between pressure sensor 506 and driving motor 2 simultaneously, and pressure sensor 506 can change the pressure signal that pressure sensor 506 detected into the signal of telecommunication and carry to the controller for the controller carries out the control that corresponding opened and close or turned to driving motor 2 according to the threshold value scope of setting for, thereby accurately to work piece centre gripping or place, has promoted greatly the utility model discloses a work precision.

In a normal use process, when the fastening bolt 508 fastens the pressure rod 505, the pressure rod 505 rotates with the fastening nut, a large sliding friction force is generated between the pressure rod 505 and the pressure plate 502 due to interference fit, and a wear condition may occur, so that a clearance fit state is generated between the pressure rod 505 and the pressure plate 502, and a large error occurs in the measurement of the pressure sensor 506, therefore, as shown in fig. 3, the pressure rod 505 is sleeved with the linear bearing 504, an outer wall of the linear bearing 504 is connected with the pressure plate 502, and an inner wall of the linear bearing 504 is connected with an outer wall of the pressure rod 505. The linear bearing 504 converts the sliding friction force of the pressure rod 505 relative to the pressure plate 502 into rolling friction force, and the fastening efficiency of the fastening bolt 508 can be improved while the vertical acting force of the pressure rod 505 on the pressure plate 502 is ensured.

In order to prevent the outer surface of the workpiece from being damaged when the workpiece is clamped, a rubber cushion 507 may be disposed on the surface of the pressing plate 501, the rubber cushion 507 may be made of a polymer synthetic rubber material, and the rubber cushion 507 is adhered to the surface of the pressing plate 501 through a high-performance adhesive.

The working principle of the embodiment is as follows: when the utility model is used for clamping a workpiece, the fastening bolt 508 is fastened by a special tool, so that the pressing plate 501 and the mounting plate 503 are relatively fixed, the driving motor 2 is started, the driving motor 2 drives the first synchronizing wheel 601 to rotate, the first synchronizing wheel 601 drives the second synchronizing wheel 602 to rotate through the synchronizing belt 603, the second synchronizing wheel 602 drives the screw 3 to rotate at a constant speed, because the two sliding tables 4 are sleeved on two sides of the screw rod 3 through the screw holes 402, the limit sliding rails 401 are tightly matched with the convex strips, so that the sliding tables 4 can not rotate randomly but can only move linearly along the convex strip direction, and the screw thread directions of the two sides of the screw rod 3 are opposite, so that the screw rod 3 is matched with the screw thread pair between the screw holes 402 through opposite screw threads, and the two sliding tables 4 can be driven to move oppositely when the screw rod 3 rotates. In the process of moving the two sliding tables 4 in opposite directions, the clamping devices 5 are simultaneously driven to move in opposite directions, when the rubber cushion 507 contacts the surface of the workpiece, the rubber cushion 507 applies a reaction force to the pressure rod 505, the pressure sensor 506 receives a pressure signal and converts the pressure signal into an electric signal, and the control circuit controls the rotating speed, the steering, the opening and the closing of the driving motor 2 so as to finish accurate clamping of the workpiece.

To sum up, the embodiment of the utility model provides a straight line module is got to work piece clamp, including base 1, be provided with driving motor 2 on the above-mentioned base 1, above-mentioned driving motor 2 is connected with lead screw 3, and the 3 left and right sides of above-mentioned lead screw have opposite screw thread of turning to respectively, and the 3 both ends of lead screw are rotated and are set up on base 1. The two ends of the base 1 are movably provided with sliding tables 4, the sliding tables 4 are provided with screw holes 402, and the two sliding tables 4 are respectively sleeved on the left side and the right side of the screw rod 3 through the screw holes 402. The sliding table 4 is provided with a clamping device 5. Through the opposite spiral threads on the left side and the right side of the screw rod 3, the clamping devices 5 can synchronously move in the opposite directions or in the opposite directions, and the loading capacity and the precision are improved. The base 1 is provided with a protruding strip parallel to the screw rod 3, the sliding table 4 is provided with a limit slide rail 401 corresponding to the protruding strip, and the protruding strip is arranged in the limit slide rail 401. Meanwhile, the convex strip is matched with the limiting slide rail 401, so that the sliding table 4 can stably and effectively move linearly. The clamping device 5 comprises a pressing plate 501, a plurality of evenly distributed pressure rods 505 are vertically connected to the pressing plate 501, an installation plate 503 is arranged at one end of each pressure rod 505, which is far away from the pressing plate 501, and the side end of the installation plate 503 is connected with the lower end face of the sliding table 4. Two pressure plates 502 are provided between the pressing plate 501 and the mounting plate 503 in parallel, a pressure sensor 506 is provided between the pressure plates 502, and the pressure sensor 506 is electrically connected to the driving motor 2. The pressure bar 505 penetrates the pressure plate 502, and a fastening bolt 508 is provided at a connection point of the pressure bar 505 and the mounting plate 503. The control of the pressure sensor 506 on the driving motor 2 can realize real-time accurate clamping of the workpiece. The synchronous component can improve the transmission efficiency of the driving motor 2 and reduce the failure rate of the motor.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The workpiece clamping linear module is characterized by comprising a base, wherein a driving motor is arranged on the base and connected with a lead screw, threads with opposite rotation directions are respectively arranged on the left side and the right side of the lead screw, and two ends of the lead screw are rotatably arranged on the base; sliding tables are movably arranged at two ends of the base, screw holes are formed in the sliding tables, and the two sliding tables are respectively sleeved on the left side and the right side of the screw rod through the screw holes; and a clamping device is arranged on the sliding table.

2. The workpiece clamping linear module according to claim 1, wherein a protruding strip parallel to the lead screw is arranged on the base, a limiting slide rail corresponding to the protruding strip is arranged on the sliding table, and the protruding strip is arranged in the limiting slide rail.

3. The workpiece clamping linear module according to claim 2, wherein the number of the limiting slide rails is two, and the limiting slide rails are respectively and symmetrically arranged on the sliding table based on the lead screw; the convex strips correspond to the limiting slide rails and are arranged into two lines, and the two convex strips are respectively arranged on two sides of the lower end face of the base.

4. The workpiece clamping linear module according to claim 1, wherein the clamping device comprises a pressing plate, a plurality of uniformly distributed pressure rods are vertically connected to the pressing plate, a mounting plate is arranged at one end of each pressure rod, which is far away from the pressing plate, and the side end of the mounting plate is connected with the lower end face of the sliding table.

5. The workpiece clamping linear module as claimed in claim 4, wherein two parallel pressure plates are arranged between the pressing plate and the mounting plate, a pressure sensor is arranged between the pressure plates, and the pressure sensor is electrically connected with the driving motor; the pressure bar runs through the pressure plate, and the pressure bar is provided with fastening bolt with the mounting panel junction.

6. The workpiece clamping linear module as recited in claim 5, wherein a linear bearing is sleeved on the pressure rod, an outer wall of the linear bearing is connected with the pressure plate, and an inner wall of the linear bearing is connected with an outer wall of the pressure rod.

7. The workpiece clamping linear module according to any one of claims 4-6, wherein the surface of the pressing plate is provided with a rubber cushion.

8. The workpiece clamping linear module according to claim 1, wherein a transmission assembly is arranged between the driving motor and the lead screw, and two ends of the transmission assembly are respectively connected with the driving motor and the lead screw.

9. The workpiece clamping linear module as set forth in claim 8, wherein the transmission assembly comprises a first synchronizing wheel and a second synchronizing wheel, the first synchronizing wheel is connected with the driving motor, and the second synchronizing wheel is sleeved on the end of the lead screw; a synchronous belt is sleeved outside the first synchronous wheel and the second synchronous wheel; the first synchronizing wheel, the second synchronizing wheel and the periphery of the synchronizing belt are sleeved with protective covers.

10. The workpiece clamping linear module according to claim 1, wherein rolling bearings are arranged at two ends of the screw rod, the outer wall of each rolling bearing is connected with the base, and the inner wall of each rolling bearing is connected with the outer wall of the screw rod.