Floating clamping mechanism for displacement driving system

Abstract

The utility model belongs to the technical field of steel rail machining equipment, and provides a floating clamping mechanism for a displacement driving system, which is used for reliably clamping the displacement driving system and comprises a lathe bed, a sliding plate connected above the lathe bed in a sliding manner, and clamping strips distributed along the length direction of the lathe bed, a mounting groove hole is formed in the sliding plate, a cylinder body of the locking oil cylinder is slidably connected into the mounting groove hole, and the length of the axis of a piston rod is distributed in the width direction of the clamping strip; the clamping pincers are located below the sliding plate and comprise a fixed pincer body and a movable pincer body which are fixedly connected with a cylinder body and a piston rod of the locking oil cylinder respectively, and the fixed pincer body and the movable pincer body are located on the two sides of the clamping strip in the width direction respectively; the floating mechanism is arranged between the sliding plate and the locking oil cylinder and used for conducting equidistant resetting and buffering on the locking oil cylinder in the axis direction of the piston rod. According to the floating clamping mechanism, the sliding plate and the lathe bed can be effectively fixed, and interference between the fixed clamp body and the clamping strip and between the movable clamp body and the clamping strip in the relative sliding process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rail processing equipment, in particular to a floating clamping mechanism for a displacement drive system. Background Art

[0002] At present, the ultra-long displacement drive system of heavy equipment such as rail CNC drilling machines requires precise positioning of functional components during actual operation to improve processing and control accuracy. There are various implementation methods and structures for the movement and positioning of functional components, such as clamping mechanisms, brake blocks and other positioning structures. For the clamping mechanism, a cylinder or oil cylinder is generally used to drive the clamping clamp body for clamping operation. However, during the loosening process of the clamping clamp body, if the clamp body moves unevenly to both sides, interference is likely to occur between the clamping clamp body and the bed clamping strip, and collision or friction between them may occur, thereby causing damage to components and even problems with displacement control, reducing the service life of components. Utility Model Content

[0003] The utility model provides a floating clamping mechanism for a displacement drive system to achieve reliable clamping of the displacement drive system. In order to achieve the above purpose, the technical solutions adopted are as follows:

[0004] A floating clamping mechanism for a displacement drive system, comprising a bed and a slide, wherein the slide is slidably connected to the upper portion of the bed along the length direction, and is characterized by further comprising:

[0005] A clamping strip, fixedly connected to the bed and having a length parallel to the length of the bed;

[0006] A locking cylinder, wherein the slide plate is provided with a mounting slot, the cylinder body of the locking cylinder is fixedly connected to the mounting slot, and the axis length of the piston rod is distributed along the width direction of the clamping strip;

[0007] The clamping pliers are located below the slide and consist of a fixed pliers body and a movable pliers body. The fixed pliers body and the movable pliers body are fixedly connected to the cylinder body and the piston rod of the locking cylinder respectively, and the two are located on both sides of the width direction of the clamping strip;

[0008] The floating mechanism is arranged between the slide plate and the locking oil cylinder, and is used to reset and buffer the locking oil cylinder at equal distances in the axial direction of the locking oil cylinder piston rod.

[0009] Furthermore, the floating mechanism includes a spring seat and a floating spring. The spring seat is arranged on both sides of the piston rod axis direction of the locking cylinder and is fixedly connected to the slide. The floating spring is sleeved on the outside of the guide column of the spring seat, and one end of the floating spring in the length direction is connected to the base of the spring seat, and the other end is connected to the cylinder body of the locking cylinder.

[0010] Furthermore, a floating groove is provided on the slide plate, the spring seat is provided inside the floating groove, and the upper end surfaces of the spring seat and the locking cylinder are not higher than the upper end surface of the slide plate.

[0011] Furthermore, the floating groove is located above and outside the mounting slot hole, and the floating groove is communicated with the mounting slot hole.

[0012] Furthermore, a guide mechanism is fixedly connected to the slide, and the guide mechanism includes two groups of guide plates respectively located on both sides of the locking cylinder. The two groups of guide plates are respectively located on both sides of the locking cylinder, and the cylinder body of the locking cylinder can be slidably connected between the two guide plates along the axis of the piston rod.

[0013] The beneficial effects of the present invention are:

[0014] 1. A floating mechanism is set between the locking cylinder and the slide. Through two sets of symmetrically arranged spring seats and floating springs, the two jaws on the locking cylinder can be evenly separated to ensure that there is enough clearance between the two jaws in the relaxed state and the clamping surfaces corresponding to the clamping strip, so as to avoid collision or friction between the two jaws and the clamping strip during movement along the length of the bed.

[0015] 2. A guide mechanism is set between the locking mechanism and the slide to ensure that the locking cylinder can slide a small amount along the joint surface of the guide plate in the relaxed state, and to guide the movement of the locking cylinder, so as to facilitate the adjustment of the initial position between the two clamping surfaces of the clamping pliers and the bed clamping strip. Moreover, during the clamping and loosening action, it can cooperate with the spring seat and the floating spring to realize the movement guidance, so as to avoid interference between the clamp body and the clamping strip due to different displacements on both sides caused by the tilt of the locking cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model

[0017] Figure 2 for Figure 1 A partial enlarged diagram of point A in the middle

[0018] Figure 3 A top view of the connection structure between the locking mechanism and the slide

[0019] Figure 4 for Figure 3 A partial enlarged diagram of point B in the middle

[0020] Figure 5 for Figure 4 Middle CC cross-section view

[0021] Figure 6 for Figure 5 DD section view in

[0022] in:

[0023] 1-bed, 2-slide plate, 3-drive mechanism, 4-slide plate guide, 5-rack, 6-clamping bar, 7-mounting slot, 8-locking cylinder, 801-cylinder body, 802-piston rod, 9-spring seat, 901-base, 902-guide column, 10-floating spring, 11-floating groove, 12-guide plate, 13-fixed clamp body, 14-movable clamp body, 15-first fixing bolt, 16-second fixing bolt. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the viewing direction or position relationship, and are only for the convenience of describing the utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In this embodiment, for the convenience of description, the length direction of the bed, that is, the processing sequence direction, is taken as the front-to-back direction, and the width direction of the bed is taken as the left-to-right direction.

[0027] like Figure 1 The floating clamping mechanism shown is used for a displacement drive system, including a bed 1, a slide 2 connected to the top of the bed for sliding back and forth, a drive mechanism 3, and a clamping mechanism. The slide 2 can slide back and forth along the length direction of the bed 1 through the drive mechanism 3, and the slide 2 is fixed to the bed 1 through the clamping mechanism.

[0028] Specifically, the driving mechanism 3 in this embodiment adopts a single gear rack transmission mechanism, including a servo motor, a reduction motor, a gear and a rack 5, as shown in FIG. Figure 1As shown, the output shaft of the servo motor is transmission-connected to the input shaft of the reducer, the reducer housing is fixedly connected to the skateboard 2, and its output shaft passes vertically downward through the bottom of the skateboard 2 and is coaxially fixedly connected to a gear (not shown in the figure), the length of the rack 5 is distributed along the length direction of the bed 1 and is fixed to the bed 1, and the rack 5 is meshed with the gear, and a skateboard guide rail 4 with a length distributed along the front-to-back direction is fixedly connected above the bed 1, and a guide rail slider matched with it is provided at the lower end of the skateboard 2, and the guide rail slider is slidingly connected to the skateboard guide rail 4, and the gear can be driven to rotate by the servo motor and the reducer, thereby driving the skateboard 2 to move along the length direction of the rack 5, thereby realizing the front-to-back movement of the skateboard 2 above the bed 1.

[0029] Locking mechanism such as Figure 2-Figure 6 As shown, it includes a locking cylinder 8 and a clamping pliers. The slide plate 2 is provided with mounting slots 7 that are distributed vertically. The length of the mounting slots 7 is distributed in the left-right direction. The cylinder body 801 of the locking cylinder 8 can slide left and right along the mounting slots 7. The axis of the piston rod 802 is distributed in the left-right direction. The lower part of the cylinder body 801 passes downward through the mounting slots 7 and is then installed with a clamping pliers. The clamping pliers are as shown in FIG. Figure 6 As shown, it includes a fixed caliper body 13 and a movable caliper body 14. The movable caliper body 14 is fixedly connected to the movable end of the piston rod 802, that is, the lower right end in the direction shown in the figure. The fixed caliper body 13 is fixedly connected to the lower left side of the cylinder body 801, and the fixed caliper body 13 and the movable caliper body 14 are spaced and arranged opposite to each other in the left and right directions. The locking cylinder 8 can be actuated to drive the movable caliper body 14 to move toward or away from the fixed caliper body 13 through the piston rod 802, thereby realizing the clamping or loosening operation of the clamping strip 6 located between the two.

[0030] A floating mechanism is also provided between the slide plate 2 and the locking cylinder 8. The floating mechanism includes a spring seat 9 and a floating spring 10. A floating groove 11 is also provided on the upper end surface of the slide plate 2. The floating groove 11 is located above the mounting slot 7 and the two are connected. The spring seat 9 is located inside the floating groove 11. Specifically, Figure 2 、 Figure 4 as well as Figure 6As shown, the spring seat 9 includes two groups and is symmetrically arranged on the left and right sides of the locking cylinder 8. The base 901 of the spring seat 9 is fixedly connected to the bottom end surface of the floating groove 11 by the first fixing bolt 15. The guide column 902 is distributed toward the locking cylinder 8 and the axis is distributed along the left and right directions of the bed. The floating spring 10 is coaxially sleeved on the outside of the guide column 902. The left and right ends of the floating spring 10 in the length direction are respectively connected to the base 901 and the cylinder body 801. Through the setting of the floating mechanism, when the locking cylinder 8 drives the movable clamp body 14 to move outward through the piston rod 802, due to the action of the floating spring 10, the movable clamp body 14 and the fixed clamp body 13 can be moved outward by the same distance, and the two jaws are evenly separated to ensure that there is enough gap between the two jaws in the relaxed state and the clamping surfaces corresponding to the clamping strip 6 to avoid the two jaws from colliding or rubbing with the clamping strip 6 during the movement along the length direction of the bed 1.

[0031] A guide mechanism is also provided between the locking cylinder 8 and the slide plate 2. Specifically, Figure 2 、 Figure 4-Figure 6 As shown, the guiding mechanism includes two groups of guide plates 12 located inside the floating groove 11, and the two groups of wire plates 12 are respectively fixedly connected to the front and rear sides of the locking cylinder 8 by the second fixing bolts 16. The cylinder body 801 of the locking cylinder 8 slides left and right and is connected between the two guide plates 12. When the locking cylinder 8 drives the clamping pliers to be loosened, the locking cylinder 8 can slide left and right along the two guide plates 12. The guide plates 12 can cooperate with the elastic force of the floating spring 10 to adaptively adjust the distance between the movable clamp body 14 and the fixed clamp body 13 and their respective clamping surfaces, so that the distance between the two is equal, thereby realizing the movement guidance of the locking cylinder 8, avoiding the different distances between the two clamp bodies and the clamping surfaces due to tilting movement, and causing interference between the clamping surfaces, thereby causing friction during movement.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A floating clamping mechanism for a displacement drive system, comprising a bed and a slide, wherein the slide is slidably connected to the bed in the longitudinal direction, and is characterized in that: Also includes: A clamping strip, fixedly connected to the bed and having a length parallel to the length of the bed; A locking cylinder, wherein the slide plate is provided with a mounting slot, the cylinder body of the locking cylinder is slidably connected to the mounting slot along the width direction of the clamping strip, and the axis length of the piston rod is distributed along the width direction of the clamping strip; The clamping pliers are located below the slide and consist of a fixed pliers body and a movable pliers body. The fixed pliers body and the movable pliers body are fixedly connected to the cylinder body and the piston rod of the locking cylinder respectively, and the two are located on both sides of the width direction of the clamping strip; The floating mechanism is arranged between the slide plate and the locking oil cylinder, and is used to reset and buffer the locking oil cylinder at equal distances in the axial direction of the locking oil cylinder piston rod.

2. The floating clamping mechanism for a displacement drive system according to claim 1, characterized in that: The floating mechanism includes a spring seat and a floating spring. The spring seat is arranged on both sides of the piston rod axis direction of the locking cylinder and is fixedly connected to the slide. The floating spring is sleeved on the outside of the guide column of the spring seat, and one end of the floating spring in the length direction is connected to the base of the spring seat, and the other end is connected to the cylinder body of the locking cylinder.

3. The floating clamping mechanism for a displacement drive system according to claim 2, characterized in that: The slide plate is provided with a floating groove, the spring seat is arranged inside the floating groove, and the upper end surfaces of the spring seat and the locking oil cylinder are not higher than the upper end surface of the slide plate.

4. The floating clamping mechanism for a displacement drive system according to claim 3, characterized in that: The floating groove is located above and outside the mounting slot hole, and the floating groove is communicated with the mounting slot hole.

5. The floating clamping mechanism for a displacement drive system according to claim 1 or 2, characterized in that: The slide is also fixedly connected to a guide mechanism, which includes two groups of guide plates located on both sides of the locking cylinder. The two groups of guide plates are located on both sides of the locking cylinder, and the cylinder body of the locking cylinder can be slidably connected between the two guide plates along the axis of the piston rod.

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