Positioning mechanism for linear sliding table of machine tool

Abstract

The invention relates to the technical field of linear sliding table positioning, in particular to a machine tool linear sliding table positioning mechanism which comprises a sliding rack, a rotating motor is arranged on the sliding rack, a threaded rod is arranged on the rotating motor, one end of the threaded rod is connected with the rotating motor, and the other end of the threaded rod is rotationally connected with the inner wall of the sliding rack. A sliding table is arranged on the outer wall of the threaded rod, two fixing plates are fixedly installed on the sliding table, a fixing frame is fixedly installed in the sliding table frame, a sliding plate is slidably installed at the bottom end of the fixing frame, and an air pump is installed at the bottom end of the sliding plate; in the process that a rotating motor stops working and a sliding table is positioned on the outer wall of a threaded rod, an air pump is started synchronously, high-pressure air generated by the air pump is conveyed into a fixing frame, a push rod located in the fixing frame can move upwards, and the top end of a transverse plate is attached to the bottom end of the sliding table in the moving process; and the position of the sliding table is fixed.

Description

Technical Field

[0001] The invention relates to the technical field of linear slide positioning, in particular to a linear slide positioning mechanism for a machine tool. Background Art

[0002] As a mechanical equipment for processing various types of materials, machine tools often need to accurately move and position the materials to be processed by sliding the linear slide installed on the machine tool during use. During the use of the linear slide, the positioning mechanism installed on the linear slide is required to provide the slide with precise positioning effect, so as to position the slide at the required position for use.

[0003] During use, some existing positioning mechanisms on linear slides often use the rotation of a screw to drive the slide to move in a straight line. The screw stops rotating after the slide and the items it carries move to the desired position. The inertia generated when the slide stops in an emergency will cause the slide to have a large friction force with the threads on the surface of the screw after the screw stops rotating, which limits the movement of the slide and achieves the positioning of the slide. However, during long-term use, the threads on the surface of the screw are easily worn excessively, making the positioning of the slide inaccurate. Summary of the invention

[0004] The object of the present invention is to provide a positioning mechanism for a machine tool linear slide to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A linear slide positioning mechanism for a machine tool comprises a sliding table, the sliding table is provided with a rotating motor, and the rotating motor is provided with a threaded rod, one end of the threaded rod is connected to the rotating motor, and the other end of the threaded rod is rotatably connected to the inner wall of the sliding table, a slide is provided on the outer wall of the threaded rod, two fixed plates are fixedly installed on the slide, a fixed frame is fixedly installed in the sliding table, a slide plate is slidably installed at the bottom end of the fixed frame, an air pump is installed at the bottom end of the slide plate, a sliding frame is also provided on the slide plate, and one end of the air pump extends into the sliding frame, a baffle is provided on the fixed frame, a plurality of push rods are provided on the baffle, a push plate is installed on the top of the push rod, and positioning components are provided on the plurality of push plates.

[0007] Two connecting rods are arranged on the outer wall of the air pump, and the sides of the connecting rods not connected to the air pump are fixedly connected to the slide.

[0008] A total of four grooves are arranged on the two fixing plates, and U-shaped frames are arranged at the tops of the grooves, and arc-shaped fitting plates are arranged on the U-shaped frames, and the arc-shaped fitting plates are connected to the U-shaped frames through a reset spring.

[0009] Four iron core rods are arranged on the sliding platform, and the outer walls of the four iron core rods are all wound with energized coils.

[0010] Two engaging grooves and a limiting plate are arranged on the outer wall of the slide, and the limiting plates are both located above the engaging grooves.

[0011] The positioning assembly includes a horizontal plate, two vertical plates are arranged on the horizontal plate, the vertical plates are each provided with a rotating shaft, a toggle plate and a fitting plate are arranged on the rotating shaft, and a clamping block is fixedly installed on each of the fitting plates.

[0012] The engaging block and the engaging groove are both L-shaped, and the engaging block and the engaging groove have the same length, width and height.

[0013] The vertical plate is provided with a through hole, and the diameter of the through hole is the same as the diameter of the rotating shaft. A volute spring is provided in the through hole on the vertical plate, and the rotating shaft and the vertical plate are rotatably connected together through the volute spring.

[0014] A plurality of connecting springs are arranged at the bottom end of the pushing plate, and the bottom ends of the connecting springs are all fixedly connected to the baffle.

[0015] Anti-slip grooves are arranged on the left and right side walls of the sliding platform, and the sliding platform extends into the inner cavity of the sliding platform through the anti-slip grooves.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention starts an air pump synchronously when the rotating motor stops working to position the slide on the outer wall of the threaded rod. The high-pressure gas generated by the air pump is transported into the fixed frame, so that the push rod in the fixed frame can move upward. During the movement, the top end of the cross plate is fitted with the bottom end of the slide, thereby fixing the position of the slide.

[0018] When the toggle plate contacts the fixed plate and rotates in the process of following the upward movement of the horizontal plate, the bonding plate can be bonded to the slide and the bottom end of the limit plate, and the locking block will enter the locking groove in the process of following the rotation of the bonding plate to fix the position of the slide, thereby increasing the positioning and stabilization effect of the slide and avoiding relying solely on the threads on the outer wall of the threaded rod to provide positioning and fixation for the slide.

[0019] By energizing the energized coil on the core rod to generate magnetism, the core rod can be magnetic, so that the arc-shaped bonding plate can be directly bonded to the top outer wall of the core rod, which can increase the positioning and stabilization effect of the slide. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 The bottom structure diagram of the sliding platform of the present invention is

[0022] Figure 3 It is a schematic diagram of the local structure of the sliding platform of the present invention.

[0023] Figure 4 It is a schematic diagram of the internal structure of the sliding platform of the present invention.

[0024] Figure 5 Schematic diagram of the slide structure of the present invention

[0025] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure in FIG.

[0026] Figure 7 It is a cross-sectional view of the fixing frame of the present invention.

[0027] Figure 8 It is a schematic diagram of the structure of the positioning component of the present invention.

[0028] In the figure: 1. sliding stand; 2. rotating motor; 3. threaded rod; 4. sliding table; 5. sliding plate; 6. air pump; 7. connecting rod; 8. core rod; 9. fixing plate; 10. U-shaped frame; 11. arc-shaped bonding plate; 12. reset spring; 13. limit plate; 14. engaging groove; 15. fixing frame; 16. sliding frame; 17. baffle; 18. push rod; 19. pushing plate; 20. connecting spring; 21. positioning assembly; 22. horizontal plate; 23. vertical plate; 24. rotating shaft; 25. toggle plate; 26. bonding plate; 27. engaging block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figures 1 to 8 The present invention provides a technical solution: a machine tool linear slide positioning mechanism, such as Figure 1-Figure 7As shown in the figure, it includes a sliding platform 1, a control panel is installed on the sliding platform 1, a central processing unit is installed on the control panel, the control panel is connected to the air pump 6, the rotating motor 2, and the energized coil on the outer wall of the core rod 8 through a line, when the rotating motor 2 stops working, the air pump 6 and the energized coil are started synchronously, and the position of the slide 4 can be effectively fixed, a hole is provided on the side wall of the front end surface of the sliding platform 1, and the rotating motor 2 is installed in the hole, and the rear back surface of the rotating shaft of the rotating motor 2 is fixedly installed with a threaded rod 3, and the rear back surface of the threaded rod 3 is aligned with the rear back surface of the sliding platform 1. The walls are rotatably connected by a rotating connecting ring, and a slide 4 is movably mounted on the outer wall of the threaded rod 3. When the rotating motor 2 drives the threaded rod 3 to rotate, the slide 4 can move linearly on the outer wall of the threaded rod 3, and anti-slip grooves are provided on the left and right side walls of the sliding platform 1. The local structure of the slide 4 extends into the inner cavity of the sliding platform 1 through the anti-slip grooves, which can avoid the large upward thrust generated after the cross plate 22 moves upward to fit the top of the slide 4, resulting in the slide 4 being restricted only by the threaded rod 3, causing the threaded rod 3 to deform during long-term use.

[0031] Two fixed plates 9 are fixedly installed on the slide 4, and four core rods 8 are fixedly installed in the sliding platform 1. Hidden grooves are set on the outer walls of the core rods 8, and energized coils are wound in the hidden grooves. Two grooves are set on the tops of the fixed plates 9, and the width of the grooves is the same as the diameter of the core rods 8. The four core rods 8 are respectively located in the grooves on the four fixed plates 9. The fixed plates 9 can follow the slide 4 to move on the sliding platform 1 in translation, thereby increasing the stability of the slide 4 to make a linear motion, that is, the slide 4 is stabilized by the cooperation between the grooves on the fixed plates 9 and the core rods 8 and the cooperation between the anti-slip grooves on the sliding platform 1 and the slide 4. The translational movement of the slide 4 is restricted, and the translational movement of the slide 4 is reinforced and restricted. After the high-pressure gas is sent into the fixed frame 15 by the air pump 6, the activity space of the toggle plate 25 can be restricted by the fixed plate 9, so that the toggle plate 25 can rotate by contacting the bottom end of the fixed plate 9. A U-shaped frame 10 is provided above the groove on the fixed plate 9, and the bottom end of the U-shaped frame 10 is fixedly connected to the fixed plate 9. The opening on the U-shaped frame 10 faces downward, and an arc-shaped fitting plate 11 is movably installed in the U-shaped frame 10. The top end of the arc-shaped fitting plate 11 is connected to the inner wall of the top end of the U-shaped frame 10 through a plurality of reset springs 12, and the top end of the arc-shaped fitting plate 11 A plurality of telescopic connecting rods are provided, and the telescopic connecting rods are composed of a vertical rod and a telescopic rod. The top of the vertical rod is fixedly connected to the inner wall of the top of the U-shaped frame 10. The vertical rod is a hollow cylinder, and the bottom end of the vertical rod is provided with an opening matching the diameter of the telescopic rod. The telescopic rod can be inserted into the inner cavity of the vertical rod through the opening, and the bottom end of the telescopic rod is fixedly connected to the top of the arc-shaped bonding plate 11 to prevent the arc-shaped bonding plate 11 from bonding with the iron core rod 8 after the slide 4 stops moving. The arc-shaped bonding plate 11 that stops suddenly can only rely on the reset spring 12 for limiting the position due to the inertia generated, which will cause shaking. The telescopic connecting rod can ensure that the arc-shaped bonding plate 11 can only move vertically, and the arc-shaped bonding plate 11 can only move vertically. The curvature of the bottom end of the bonding plate 11 is the same as that of the core rod 8, so that the bottom end of the arc-shaped bonding plate 11 can fit tightly against the outer wall of the core rod 8. After the power-carrying coil on the outer wall of the core rod 8 is energized, the core rod 8 becomes magnetic. The arc-shaped bonding plate 11 is made of an iron block, and the magnetic core rod 8 absorbs the arc-shaped bonding plate 11, which can facilitate fixing the position of the slide 4. When the slide 4 needs to slide, the power-carrying coil on the outer wall of the core rod 8 is de-energized to make the core rod 8 lose its magnetism. The arc-shaped bonding plate 11 can move upward when the reset spring 12 contracts, thereby breaking the contact with the core rod 8 and avoiding affecting the movement of the slide 4.

[0032] A fixed frame 15 is fixedly installed in the sliding platform 1, and sliding grooves are provided at the bottom ends of the fixed frame 15 and the sliding platform 1, and slide plates 5 are slidably installed in the sliding grooves, and anti-slip grooves are provided on the inner walls on the left and right sides of the sliding grooves, and sealing rubber pads are provided in the anti-slip grooves, and the two sealing rubber pads are fixedly connected to the slide plates 5. When the slide plates 5 translate in the sliding grooves at the bottom of the fixed frame 15, when the air pump 6 follows the translational movement of the slide table 4, the slide plates 5 and the sealing rubber pads can still block the opening at the bottom of the fixed frame 15 without affecting the translational movement of the slide plates 5, and a through hole is provided at the center of the slide plates 5, and an air pump 6 is installed in the through hole, and the air inlet of the air pump 6 extends to the bottom of the slide plates 5, and the air pump 6 The air outlet extends into the sliding frame 16 through the through hole on the slide plate 5, and a pneumatic switch is installed on the air pump 6 to facilitate the input of high-pressure gas into the fixed frame 15, and the air pump 6 is located directly below the slide 4, and a sliding frame 16 is provided directly above the air pump 6, and the sliding frame 16 is located in the fixed frame 15, and the sliding frame 16 is fixedly connected to the slide plate 5, and openings are provided on the front and rear side walls of the sliding frame 16 to facilitate the rapid filling of high-pressure gas into the sliding frame 16, and a baffle 17 is fixedly installed in the fixed frame 15, and the baffle 17 is located above the sliding frame 16, and there is a three-centimeter interval between the two, and a plurality of holes are provided on the baffle 17, and push rods 18 are slidably installed in the holes, and the tops of the push rods 18 are A push plate 19 is fixedly installed, and the push rod 18 serves as a piston rod, which can move the push plate 19 in the process of straight up and down, and the bottom end of the push plate 19 is connected to the top end of the baffle 17 by a plurality of connecting springs 20. The fixed frame 15 is filled with high-pressure gas through the air pump 6. At this time, because the sliding frame 16 is located directly below the sliding table 4, the high-pressure gas blown out by the air pump 6 will first push the push rod 18 located below the sliding table 4 to move upward, and the push plate 19 can be pushed upward by the high-pressure gas, so as to avoid that when the air pump 6 delivers high-pressure gas to the fixed frame 15, it takes a certain amount of time for the fixed frame 15 to be fully filled with high-pressure gas. If the air pump 6 is only installed on one side of the fixed frame 15, As a result, the cross plate 22 located directly below the slide 4 cannot quickly contact the bottom end of the slide 4 to locate the position of the slide 4. After the rotating motor 2 rotates to stop the air pump 6, the push rod 18 can move downward by contracting the connecting spring 20, so that the cross plate 22 breaks the contact with the slide 4, and the tops of several push plates 19 are installed with positioning components 21. Two connecting rods 7 are fixedly installed on the left and right side walls of the air pump 6, and the side of the connecting rod 7 that is not connected to the air pump 6 is fixedly connected to the slide 4. Because the air pump 6 is located directly below the slide 4, it is convenient to drive the air pump 6 to move synchronously during use by making the slide 4 slide on the outer wall of the threaded rod 3 through the connecting rod 7.

[0033] See also Figure 8The positioning assembly 21 includes a horizontal plate 22, the bottom ends of which are fixedly connected to the push plate 19, and vertical plates 23 are fixedly installed on the left and right sides of the top of the horizontal plate 22, and the tops of the vertical plates 23 are provided with grooves, and a rotating shaft 24 is provided in the grooves, and a through hole is provided on the side walls of the grooves, and the diameter of the through hole is the same as the diameter of the rotating shaft 24, and the outer wall of the rotating shaft 24 is connected to the inner wall of the groove on the vertical plate 23 by a spiral spring, and the rotating shaft 24 and the vertical plate 23 can be rotatably connected together by the spiral spring, and the top of the rotating shaft 24 is fixedly installed with a toggle plate 25, and the sides of the two rotating shafts 24 close to each other are fixedly installed with a fitting plate 26, and the fitting plates 26 are fixedly installed with a clamping block 27, and the left and right side walls of the slide 4 are fixedly installed with a clamping groove 14 and the limit plate 13, the limit plate 13 is located above the engaging groove 14, the engaging groove 14 and the engaging block 27 are both L-shaped, and the engaging block 27 has the same length, width and height as the engaging groove 14. When the air pump 6 pushes the push rod 18, the push plate 19 and the cross plate 22 to move upward, the two toggle plates 25 above the cross plate 22 can be driven to contact the bottom end of the fixed plate 9, so that the toggle plate 25 and the bonding plate 26 rotate with the rotating shaft 24. At this time, the bonding plate 26 rotates to fit the side wall of the slide 4, and the engaging block 27 can be snapped into the engaging groove 14 during the rotation of the bonding plate 26. After the engaging block 27 is snapped into the engaging groove 14, the top of the bonding plate 26 and the side close to the side wall of the slide 4 are tightly fitted with the limit plate 13 and the slide 4 respectively, which is convenient for effectively positioning the slide 4.

[0034] When the present invention is in use, the electrical appliances on the device are started by an external power supply, and the rotation of the rotating motor 2 is controlled to drive the threaded rod 3 to rotate, and the slide 4 is driven to translate and linearly move on the top of the sliding platform 1 during the rotation of the threaded rod 3. After the rotating motor 2 stops, the slide 4 will stop moving on the outer wall of the threaded rod 3. At this time, the air pump 6 is started and the generated high-pressure gas is sent into the fixed frame 15. Because the air pump 6 is directly below the slide 4, the high-pressure gas in the fixed frame 15 will first push the push rod 18, the push plate 19 and the cross plate 22 located below the slide 4 to move upward, and make the top of the cross plate 22 fit the bottom end of the slide 4. At this time, the two toggle plates 25 located on the cross plate 22 contact the bottom end of the fixed plate 9, so that the toggle plate 25 and the bonding plate 26 rotate with the rotating shaft 24. At this time, the bonding plate 26 rotates to fit the side wall of the slide 4, and the engaging block 27 is engaged in the engaging groove 14 during the rotation of the bonding plate 26. After the engaging block 27 is inserted into the engaging groove 14, the top of the bonding plate 26 and the side close to the side wall of the slide 4 are tightly fitted with the limit plate 13 and the slide 4 respectively. After the slide 4 is effectively positioned, the energized coil is started at the same time, so that the core rod 8 generates magnetism and fits with the arc-shaped bonding plate 11, further fixing the position of the slide 4. After the rotating motor 2 works again, the air pump 6 stops working, and the connecting spring 20 will push the push rod 18, the push plate 19, and the cross plate 22 to move downward, so that the engaging block 27 can move downward and disengage in the engaging groove 14, and the rotating shaft 24 is rotated by the spiral spring, so that the bonding plate 26 can break the contact with the slide 4. At this time, the energized coil on the core rod 8 is de-energized to make the core rod 8 lose its magnetism, so that the reset spring 12 contracts and drives the arc-shaped bonding plate 11 to break the contact with the core rod 8, thereby preventing the bonding plate 26 and the arc-shaped bonding plate 11 from affecting the movement of the slide 4.

[0035] 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 machine tool linear slide positioning mechanism, comprising a slide frame (1), characterized in that: The sliding platform (1) is provided with a rotating motor (2), and the rotating motor (2) is provided with a threaded rod (3), one end of the threaded rod (3) is connected to the rotating motor (2), and the other end of the threaded rod (3) is rotatably connected to the inner wall of the sliding platform (1), a sliding platform (4) is provided on the outer wall of the threaded rod (3), and two fixed plates (9) are fixedly installed on the sliding platform (4), and a fixed frame (15) is fixedly installed in the sliding platform (1), and the fixed frame (15) A slide plate (5) is slidably mounted on the bottom end of the slide plate (5), an air pump (6) is mounted on the bottom end of the slide plate (5), a sliding frame (16) is also arranged on the slide plate (5), and one end of the air pump (6) extends into the sliding frame (16), a baffle plate (17) is arranged on the fixed frame (15), a plurality of push rods (18) are arranged on the baffle plate (17), a push plate (19) is mounted on the top end of the push rod (18), and a positioning assembly (21) is arranged on each of the plurality of push plates (19).

2. A machine tool linear slide positioning mechanism according to claim 1, characterized in that: Two connecting rods (7) are arranged on the outer wall of the air pump (6), and the sides of the connecting rods (7) not connected to the air pump (6) are fixedly connected to the slide table (4).

3. The linear slide positioning mechanism for a machine tool according to claim 1, characterized in that: A total of four grooves are provided on the two fixing plates (9), and a U-shaped frame (10) is provided at the top of each groove, and an arc-shaped bonding plate (11) is provided on each U-shaped frame (10), and the arc-shaped bonding plate (11) is connected to the U-shaped frame (10) via a return spring (12).

4. The linear slide positioning mechanism for a machine tool according to claim 1, characterized in that: Four iron core rods (8) are arranged on the sliding platform (1), and the outer walls of the four iron core rods (8) are all wound with energized coils.

5. The linear slide positioning mechanism for a machine tool according to claim 1, characterized in that: Two engaging grooves (14) and a limiting plate (13) are arranged on the outer wall of the slide (4), and the limiting plates (13) are both located above the engaging grooves (14).

6. The linear slide positioning mechanism for a machine tool according to claim 1, characterized in that: The positioning assembly (21) comprises a transverse plate (22), two vertical plates (23) are arranged on the transverse plate (22), a rotating shaft (24) is arranged on the vertical plates (23), a toggle plate (25) and a bonding plate (26) are arranged on the rotating shaft (24), and a locking block (27) is fixedly mounted on the bonding plate (26).

7. A machine tool linear slide positioning mechanism according to claim 6, characterized in that: The engaging block (27) and the engaging groove (14) are both L-shaped, and the engaging block (27) and the engaging groove (14) have the same length, width and height.

8. The machine tool linear slide positioning mechanism according to claim 6, characterized in that: The vertical plate (23) is provided with a through hole, and the diameter of the through hole is the same as the diameter of the rotating shaft (24). A spiral spring is provided in the through hole on the vertical plate (23), and the rotating shaft (24) and the vertical plate (23) are rotatably connected together through the spiral spring.

9. The machine tool linear slide positioning mechanism according to claim 1, characterized in that: A plurality of connecting springs (20) are arranged at the bottom end of the pushing plate (19), and the bottom ends of the connecting springs (20) are all fixedly connected to the baffle plate (17).

10. The machine tool linear slide positioning mechanism according to claim 1, characterized in that: Anti-slip grooves are provided on the left and right side walls of the sliding platform (1), and the sliding platform (4) extends into the inner cavity of the sliding platform (1) through the anti-slip grooves.

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