High-precision automatic positioning sliding table

Abstract

A high-precision automatic positioning sliding table comprises a bottom plate, a stepping motor is mounted at one end of the bottom plate through a motor mounting plate, an output shaft of the stepping motor is fixedly connected with a threaded rod, one end of the threaded rod is sleeved with a bearing mounting sleeve, the other end of the threaded rod is sleeved with a threaded rod sliding sleeve capable of horizontally moving front and back, and the bearing mounting sleeve is mounted on one side of the bottom plate through a fixing cross beam. The upper end of the threaded rod sliding sleeve is fixedly connected with a sliding table, the sliding table is fixedly connected with two crossed stand column type ball guide rails, the two crossed stand column type ball guide rails are fixedly connected with a bottom plate, two first pins are arranged on one side of the bottom plate, two second pins are arranged on one side of the sliding table, and tensioning pieces are correspondingly arranged between the first pins and the second pins in a mutual traction mode. According to the utility model, the bottom plate and the sliding table are provided with mutual tensioning pulling force through the tensioning piece, so that the threaded rod sliding sleeve and the threaded rod are tensioned towards the pulling force direction, the inevitable error in processing is reduced, the threaded rod sliding sleeve does not generate inertial rotation on the threaded rod, the error generated by the single-circle stroke of the sliding table can be effectively reduced, and the precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of slide tables, in particular to a high-precision automatic positioning slide table. Background Art

[0002] The slide is a kind of transportation equipment, which is mainly used for the transportation of goods in the fields of industrial production, warehousing logistics, airport aviation, etc. The internal structure of the slide consists of a transmission structure and a sliding structure. The transmission structure is generally a tooth bar, and the sliding structure is generally a tooth bar sleeve mounted on the tooth bar. The rotation of the tooth bar drives the tooth bar sleeve to move forward and backward. However, due to the gap between the tooth bar and the tooth bar sleeve, in a single turn of the tooth bar, the tooth bar sleeve will travel more than 1mm due to inertia, and the gap is not conducive to fine-tuning of accuracy. When used on equipment with strict accuracy requirements, it will cause a large accuracy error compared with the set stroke. Utility Model Content

[0003] The utility model aims to provide a high-precision automatic positioning slide to solve the above problems.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high-precision automatic positioning slide comprises a base plate, one end of which is provided with a stepper motor via a motor mounting plate, the output shaft of the stepper motor is fixedly connected with a tooth rod, one end of the tooth rod is provided with a bearing mounting sleeve, the other end of the tooth rod is provided with a tooth rod sliding sleeve which can be translated forward and backward, the bearing mounting sleeve is installed on one side of the base plate via a fixed cross beam, a plurality of bearings are installed in the bearing mounting sleeve, the upper end of the tooth rod sliding sleeve is fixedly connected with a slide, the slide is slidably connected with the base plate via a pair of cross-column type ball guide rails, two first pins are arranged on one side of the base plate, two second pins are arranged on one side of the slide, and tensioning members are provided between the first pin and the second pin for corresponding mutual traction.

[0006] Furthermore, a groove is provided at one end of the base plate, a slide groove connected to the groove is provided at one side of the base plate, the bearing mounting sleeve is accommodated in the groove, the tooth rod sliding sleeve can be arranged on the slide groove so as to be movably moved forward and backward, and the tooth rod is arranged above the slide groove.

[0007] Furthermore, a fixing nut is tightened on one side of the bearing mounting sleeve.

[0008] Furthermore, one end of the bottom plate is fixedly connected to a sensing board, a sensing PCB is arranged on the sensing board, connecting sockets are arranged on opposite sides of the sensing PCB, two opposing photoelectric sensors are arranged on the sensing PCB, and a sensing sheet is fixedly connected to the sliding platform above the sensing board through a fixed plate, and the sensing sheet has two protrusions for cutting off the sensing signal from the opposing photoelectric sensor.

[0009] Furthermore, the cross-column type ball guide rail includes a fixed guide rail fixedly connected to the base plate and a translation guide rail fixedly connected to the slide, a ball translation groove is arranged between the fixed guide rail and the translation guide rail, a translation bar is arranged in the ball translation groove, a plurality of ball holes are opened on the translation bar, and cross-arranged column-type balls are arranged in the ball holes. The column-type balls can roll in the ball holes and form a sliding abutment with the ball translation groove.

[0010] Furthermore, a power socket is provided on one side of the stepper motor.

[0011] Furthermore, a U-shaped shield is provided on the same side of the motor mounting plate and the fixed crossbeam.

[0012] Furthermore, an L-shaped shield is provided on one side of the induction plate.

[0013] Furthermore, the tensioning member may be a spring or a rubber band with tension.

[0014] The beneficial effects of the utility model are as follows: the utility model uses the tensioning member to create a mutually tightening force between the base plate and the slide table, so that the tooth rod sliding sleeve and the tooth rod are tightened in the direction of the tension, so that the tooth rod sliding sleeve will not rotate inertially on the tooth rod. This effect can effectively reduce the error caused by the single-turn stroke of the slide table and improve the accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the utility model without the slide and the L-shaped shield;

[0017] Figure 3 It is a side sectional view of the utility model;

[0018] Figure 4 It is a front cross-sectional view of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the cross-column type ball guide rail of the utility model.

[0020] Among them: base plate 1, groove 11, slide groove 12, motor mounting plate 2, stepper motor 3, power jack 31, fixed crossbeam 4, tooth rod 5, tooth rod sliding sleeve 51, bearing mounting sleeve 52, fixed nut 53, slide table 6, cross column type ball guide rail 7, fixed guide rail 71, translation guide rail 72, ball translation groove 73, translation bar 74, ball hole 741, column type ball 75, sensor plate 8, sensor PCB board 81, connecting jack 82, through-beam photoelectric sensor 83, fixed plate 84, sensor sheet 85, convex portion 851, U-shaped shield plate 9, L-shaped shield plate 10, first pin 100, second pin 200, tensioning member 300. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-5 As shown, the utility model provides a high-precision automatic positioning slide 6, including a base plate 1, one end of the base plate 1 is penetrated with a groove 11 and a slide groove 12 connected to the groove 11, the upper surface of the base plate 1 is located on one side of the groove 11 and is fixedly connected with a motor mounting plate 2, a stepper motor 3 is fixedly installed on one side of the motor mounting plate 2, a power socket 31 is arranged on one side of the stepper motor 3, and the power socket 31 is used to form an electrical connection with the control console, the output shaft of the stepper motor 3 is fixedly connected with a tooth rod 5, and a fixed beam 4 is fixedly connected to the base plate 1 above the groove 11, and a bearing mounting sleeve 52 is sleeved in the middle of the fixed beam 4, and the bearing mounting sleeve 52 is accommodated in the groove 11;

[0023] One end of the tooth rod 5 is inserted into the bearing mounting sleeve 52, and a fixing nut 53 is tightened on one side of the tooth rod 5, the bearing mounting sleeve 52 guides and supports the tooth rod 5, and the fixing nut 53 prevents the tooth rod 5 from disengaging and stabilizes the work.

[0024] Specifically, U-shaped shielding plates 9 are installed on the upper surfaces of the motor mounting plate 2 and the fixed beam 4 , and the U-shaped shielding plates 9 can shield the motor mounting plate 2 and the fixed beam 4 to prevent external dust from entering the bearing mounting sleeve 52 and the tooth rod 5 .

[0025] The other end of the tooth rod 5 is sleeved with a tooth rod sliding sleeve 51 that can translate forward and backward. The tooth rod 5 is arranged above the slide groove 12. The tooth rod sliding sleeve 51 can translate forward and backward on the slide groove 12. The upper surface of the tooth rod sliding sleeve 51 is fixedly connected with a slide table 6. Two cross column type ball bearing 75 guide rails are connected to the opposite ends of the slide table 6. The two cross column type ball bearing 75 guide rails are arranged on the opposite ends of the bottom plate 1.

[0026] The cross-column type ball bearing guide 75 includes a fixed guide 71 fixedly connected to the bottom plate 1 and a translation guide 72 fixedly connected to the slide 6. Specifically, the slide 6 is U-shaped, and two translation guides 72 are fixedly connected at both ends of the U-shaped slide 6. The translation guide 72 is arranged between the slide 6 and the fixed guide 71. A ball bearing translation groove 73 is provided between the fixed guide 71 and the translation guide 72. A translation bar 74 is arranged in the ball bearing translation groove 73 for translation back and forth. A plurality of ball holes 741 are provided on the translation bar 74, and cross-arranged column-type balls 75 are arranged in the ball holes 741. The column-type balls 75 can roll in the ball holes 741 and form a sliding contact with the ball translation groove 73. When the slide 6 translates back and forth, it drives the translation guide rail 72 to translate back and forth on the fixed guide rail 71. The plurality of column-type balls 75 form a sliding contact with the ball translation groove 73, so that the slide 6 has a certain stability during the forward and backward translation process.

[0027] Specifically, two first pins 100 are provided on the upper surface of the bottom plate 1 between the fixed guide rail 71 and the slide groove 12, and two second pins 200 are provided on the lower surface of the slide 6 between the fixed guide rail 71 and the slide groove 12, and a tensioning member 300 is correspondingly pulled between the first pin 100 and the second pin 200;

[0028] In this embodiment, the tensioning member 300 is a spring with tension, and the spring with tension can tighten or compress the jitter gap between the tooth bar sleeve 51 and the tooth bar 5 in the direction of the tension, so that there is no jitter gap between the tooth bar sleeve 51 and the tooth bar 5 or the single-circle travel distance of the slide 6 is not affected by inertia, so that the error of the single-circle travel of the slide 6 forward and backward translation is greatly reduced, thereby improving the accuracy of the single-circle travel of the slide 6, which is beneficial to the use of equipment with required precision.

[0029] Specifically, a sensing plate 8 is fixedly connected to one end of the base plate 1, a sensing PCB board 81 is arranged on the sensing plate 8, connecting sockets 82 are respectively arranged on opposite sides of the sensing PCB board 81, and the connecting sockets 82 are used to form an electrical connection with the control console, and two opposing photoelectric sensors 83 are arranged on the upper surface of the sensing PCB board 81. A sensing sheet 85 cooperating with the opposing photoelectric sensor 83 is fixedly connected to the slide 6 above the sensing plate 8 through a fixing plate 84, and the opposing ends of the sensing sheet 85 have two protrusions 851 for cutting off the sensing signal of the opposing photoelectric sensor 83.

[0030] Specifically, there are two opposing photoelectric sensors 83 and two connecting sockets 82. One opposing photoelectric sensor 83 is electrically connected to one connecting socket 82. The opposing photoelectric sensor 83 can be divided into a forward stop signal sensor and a backward stop signal sensor. The forward stop signal sensor and the backward stop signal sensor are electrically connected to the control console through the two connecting sockets 82 respectively. The forward and backward translation travel distance is set by the control console. When the forward stop signal sensor and the backward stop signal sensor are disconnected from one of the protrusions 851 at both ends of the induction sheet 85, the control console will control the stepper motor 3 to stop rotating and the slide 6 to stop the forward and backward translation to achieve the positioning of the slide 6.

[0031] Specifically, an L-shaped shielding plate 10 is provided on one side of the sensing plate 8, and the L-shaped shielding plate 10 shields the sensing sheet 85, the sensing PCB board 81 and the opposing photoelectric sensor 83, thereby preventing external dust from entering therein.

[0032] It should be noted that one end of the tooth rod 5 on which the tooth rod sleeve 51 is mounted has a thread (not shown in the figure), and a bearing connected to the thread is arranged inside the tooth rod sleeve 51. The tooth rod sleeve 51 rotates with the thread of the tooth rod 5 through the bearing and abuts against the slide groove 12, so that when the tooth rod 5 rotates, the tooth rod sleeve 51 translates back and forth on the tooth rod 5.

[0033] Working principle: the power jack 31 and the two connecting jacks 82 are electrically connected to the console, and the travel distance of the slide 6 is set through the console. Then the console drives the stepper motor 3 to drive the tooth rod 5 to rotate, and the tooth rod 5 will drive the tooth rod sleeve 51 to translate back and forth, so that the tooth rod 5 slide 6 drives the slide 6 to translate back and forth on the two cross-column ball bearing 75 guide rails. During the translation process, one of the convex parts 851 of the sensor sheet 85 and one of the pair of photoelectric sensors 83 form a sensor signal cut-off, and the sensor signal cut-off transmits the signal to the console through the connecting jack 82. After receiving the signal, the console stops the rotation of the stepper motor 3, thereby realizing the precise positioning of the slide 6.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-precision automatic positioning slide, characterized in that: It includes a base plate, one end of which is equipped with a stepper motor through a motor mounting plate, the output shaft of the stepper motor is fixedly connected to a tooth rod, one end of the tooth rod is provided with a bearing mounting sleeve, the other end of the tooth rod is provided with a tooth rod sliding sleeve that can be translated forward and backward, the bearing mounting sleeve is installed on one side of the base plate through a fixed crossbeam, a plurality of bearings are installed in the bearing mounting sleeve, the upper end of the tooth rod sliding sleeve is fixedly connected to a slide table, the slide table is slidably connected to the base plate through a pair of cross column type ball guide rails, two first pins are arranged on one side of the base plate, two second pins are arranged on one side of the slide table, and tensioning members are provided between the first pin and the second pin for corresponding mutual traction.

2. A high-precision automatic positioning slide according to claim 1, characterized in that: A groove is provided at one end of the bottom plate, a slide groove connected to the groove is provided at one side of the bottom plate, the bearing mounting sleeve is accommodated in the groove, the tooth rod sliding sleeve can be arranged on the slide groove so as to be movably moved forward and backward, and the tooth rod is arranged above the slide groove.

3. A high-precision automatic positioning slide according to claim 2, characterized in that: A fixing nut is tightened on one side of the bearing mounting sleeve.

4. A high-precision automatic positioning slide according to claim 1, characterized in that: One end of the bottom plate is fixedly connected to a sensing board, a sensing PCB is arranged on the sensing board, connecting jacks are arranged on opposite sides of the sensing PCB, two opposing photoelectric sensors are arranged on the sensing PCB, and a sensing sheet is fixedly connected to the sliding platform above the sensing board through a fixing plate, and the sensing sheet has two protrusions for cutting off the sensing signal from the opposing photoelectric sensor.

5. The high-precision automatic positioning slide according to claim 1, characterized in that: The cross-column ball guide rail includes a fixed guide rail fixedly connected to the base plate and a translation guide rail fixedly connected to the slide table. A ball translation groove is arranged between the fixed guide rail and the translation guide rail. A translation bar is arranged in the ball translation groove. A plurality of ball holes are opened on the translation bar. There are cross-arranged column-type balls in the ball holes. The column-type balls can roll in the ball holes and form a sliding abutment with the ball translation groove.

6. A high-precision automatic positioning slide according to claim 1, characterized in that: A power socket is arranged on one side of the stepping motor.

7. The high-precision automatic positioning slide according to claim 1, characterized in that: A U-shaped shield is arranged on the same side of the motor mounting plate and the fixed crossbeam.

8. The high-precision automatic positioning slide according to claim 4, characterized in that: An L-shaped shield is arranged on one side of the induction plate.

9. The high-precision automatic positioning slide according to claim 1, characterized in that: The tensioning member may be a spring or a rubber band with tension.

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