CN221145844U

CN221145844U - Electric displacement table

Info

Publication number: CN221145844U
Application number: CN202322873326.2U
Authority: CN
Inventors: 金新刚
Original assignee: Jiaxing Xurui Electronic Technology Co ltd
Current assignee: Jiaxing Xurui Electronic Technology Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-06-14
Anticipated expiration: 2033-10-24

Abstract

The utility model discloses an electric displacement table, which comprises a base, a screw rod, a driving mechanism, a first displacement platform and a second displacement platform, wherein the screw rod is rotatably arranged on the base, the driving mechanism is used for driving the screw rod to rotate around the axis of the screw rod, the first displacement platform is slidably arranged on the base, the second displacement platform is used for arranging a load, the screw rod penetrates through the first displacement platform and is in threaded connection with the first displacement platform, and the second displacement platform moves along with the first displacement platform; the electric displacement platform also comprises a flat push bearing sliding rail, and the flat push bearing sliding rail comprises: the sliding rail is fixedly arranged on the base and extends in the same direction with the lead screw; the sliding rail sleeve is sleeved on the periphery of the sliding rail and is in sliding fit with the sliding rail; the bearing seat is arranged on the sliding rail sleeve, the upper surface of the bearing seat is recessed downwards to form a groove, and the groove is exposed out of the sliding rail sleeve; and the adjusting screw moves synchronously with the second displacement platform, a ball head of the adjusting screw is arranged in a groove of the bearing seat, and the shape and the size of the ball head are matched with the groove.

Description

Electric displacement table

Technical Field

The utility model relates to the technical field of optics, in particular to an electric displacement table.

Background

The electric displacement table is high in accuracy, high in controllability, high in practicability and stable in performance, so that the electric displacement table is widely applied to the fields of scientific research, optical implementation, laser application, full-automatic metering detection instrument equipment, industrial automation and the like.

The current electronic displacement platform, a high stable displacement platform for laser rangefinder is disclosed in chinese patent application number 202221830089.0, including the base, the mount table with move the platform, the both sides upper end of base is fixed with the guide rail, the upper end sliding connection of guide rail has the slider, and the one end of slider is fixed with the connecting plate, the one end that the slider was kept away from to the connecting plate is provided with moves the platform, the middle part both sides of moving the platform are fixed with the nut, and the middle part swing joint of nut has the lead screw, move the platform and pass through threaded connection between nut and the lead screw, and move and pass through connecting plate and slider and guide rail between be sliding connection.

In the displacement table, the connecting plate and the sliding block are usually fixed by bolts, and a supporting seat is usually arranged on the base to slidably support the displacement table so as to keep a certain height. However, the contact is point contact, so that the contact area is small, the pressure is large, and the universal ball is easy to wear. There is therefore a need for improvement.

Disclosure of utility model

The utility model aims to solve the technical problems of the prior art and provides an electric displacement table, which reduces abrasion during the movement of the displacement table and prolongs the service life.

The technical scheme adopted for solving the technical problems is as follows: the electric displacement table comprises a base, a screw rod, a driving mechanism, a first displacement platform and a second displacement platform, wherein the screw rod is rotatably arranged on the base, the driving mechanism is used for driving the screw rod to rotate around the axis of the screw rod, the first displacement platform is slidably arranged on the base, the second displacement platform is used for arranging a load, the screw rod penetrates through the first displacement platform and is in threaded connection with the first displacement platform, and the second displacement platform moves along with the first displacement platform; the method is characterized in that:

The electric displacement platform also comprises a flat push bearing sliding rail, and the flat push bearing sliding rail comprises:

The sliding rail is fixedly arranged on the base and extends in the same direction with the lead screw;

the sliding rail sleeve is sleeved on the periphery of the sliding rail and is in sliding fit with the sliding rail;

The bearing seat is arranged on the sliding rail sleeve, the upper surface of the bearing seat is recessed downwards to form a groove, and the groove is exposed out of the sliding rail sleeve; and

The adjusting screw moves synchronously with the second displacement platform, a ball head of the adjusting screw is arranged in a groove of the bearing seat, and the shape and the size of the ball head are matched with the groove.

Through setting up sliding support subassembly for can be used to keep the adjusting screw of second displacement platform height and be located the slide rail cover (bearing frame) of adjusting screw below and be in the state of multiple spot complex, multiplicable area of contact, dispersion pressure reduces wearing and tearing, thereby can increase of service life.

Further, the sliding bearing sliding rail further comprises a sliding bearing in sliding fit with the sliding rail, and the sliding bearing is arranged in the sliding rail sleeve, so that the sliding rail sleeve can slide relatively to the sliding rail, the position of the sliding rail sleeve can be adjusted by utilizing the adjusting screw, the sliding rail sleeve is prevented from being contacted with the sliding rail, and only the sliding bearing is contacted with the sliding rail, so that friction can be reduced.

Further, in order to facilitate the stable relative movement of the slide rail and the flat-pushing bearings, the flat-pushing bearings are at least two so as to be respectively in sliding fit with the upper surface and the lower surface of the slide rail, and the bearing seats are matched with the flat-pushing bearings positioned above.

Further, the sliding rail sleeve is connected with the second displacement platform through the elastic piece, so that the offset of the flat-pushing bearing can be avoided, and the flat-pushing bearing can be stably matched with the sliding rail.

Further, in order to set up adjusting screw, be provided with the axle connecting block on the second displacement platform, adjusting screw passes the axle connecting block from top to bottom to make adjusting screw and second displacement platform synchronous movement.

Further, to ensure the height of the second displacement platform, the electric displacement platform further comprises support rods parallel to the screw rods and penetrating through the second displacement platform, the support rods are fixed with the second displacement platform, and the number of the support seats is two, and the support rods are slidably supported on the support seats.

Further, in order to stably support the support rod, the support base comprises a universal ball seat, the upper surface of the universal ball seat is sunken downwards to form a support groove, the cross section of the support groove is V-shaped, and the support rod is supported in the support groove.

Further, in order to facilitate the sliding of the support rod while supporting the support rod, the two bottom surfaces of the support groove forming a V shape gradually extend from top to bottom in a direction approaching each other in an inclined manner until being connected with each other, and each bottom surface is provided with a first universal ball bearing on which the support rod is supported.

Further, in order to avoid the movement of the supporting rod, a pressing block fixed with the universal ball seat is arranged on the supporting rod.

Further, the two ends of the sliding rail are provided with the stop blocks, so that the limit position of the sliding rail sleeve can be limited.

Compared with the prior art, the utility model has the advantages that: through setting up sliding support subassembly for can be used to keep the adjusting screw of second displacement platform height and be located the slide rail cover (bearing frame) of adjusting screw below and be in the state of multiple spot complex, multiplicable area of contact, dispersion pressure reduces wearing and tearing, thereby can increase of service life.

Drawings

FIG. 1 is a schematic view of an electric displacement table according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of an electric displacement table according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a second displacement platform and a sliding support assembly of an electric displacement platform according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a sliding support assembly of an electric displacement table according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a partially exploded structure of a sliding support assembly of an electric displacement table according to an embodiment of the present utility model;

Fig. 6 is a partially exploded view of a support base of an electric displacement table according to an embodiment of the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present utility model may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.

Referring to fig. 1 to 6, an electric displacement table includes a base 1, a screw 2, a first displacement platform 3, a second displacement platform 4, a guide rod 5, a support rod 6, and a driving mechanism 7.

Wherein, lead screw 2 rotatably sets up on base 1 through lead screw seat 21, and lead screw seat 21 has two, arranges along the axial interval of lead screw 2, and the axial both ends and the lead screw seat 21 cooperation of lead screw 2 can set up central bearing (not shown) in the lead screw seat 21 and lead screw 2 normal running fit to play the effect of restriction lead screw 2 position, prevent radial float. The first displacement platform 3 is slidably arranged on the base 1, the first displacement platform 3 is positioned between the two screw rod seats 21, the screw rod 2 penetrates through the first displacement platform 3, and the screw rod 2 is in threaded connection with the first displacement platform 3. The driving mechanism 7 may be a motor for driving the screw 2 to rotate around its own axis, so that the first displacement platform 3 can move linearly along the axial direction of the screw 2 when the screw 2 rotates.

The guide rod 5 is parallel to the screw rod 2, both ends of the guide rod can also penetrate into or pass through the screw rod seat 21 at the corresponding position, and the guide rod 5 can be fixed with the screw rod seat 21. The first displacement platform 3 is provided with a first perforation 31 for the guide rod 5 to pass through, and a linear bearing 51 is arranged in the first perforation 31 of the first displacement platform 3, the guide rod 5 passes through the linear bearing 51 and is in sliding fit with the linear bearing 51, so that the first displacement platform 3 and the guide rod 5 are reliably in sliding connection. The guide bar 5 may function to prevent the first displacement platform 3 from rotating on a horizontal plane.

The electric displacement table further comprises supporting seats 8, one supporting seat 8 is arranged on one side, far away from the other screw seat 21, of each screw seat 21, two ends of each screw 2 can penetrate into the corresponding screw seat 21 and can penetrate into the supporting seats 8, and the driving mechanism 7 is arranged on one side, far away from the corresponding screw seat 21, of one supporting seat 8. The support rod 6 is in sliding fit with the support seat 8. The support seat 8 includes a base 81 and a universal ball seat 82 disposed on the base 81, and the base 81 and the universal ball seat 82 may be of an integral or separate structure. The upper surface of the universal ball seat 82 is recessed downward to form a support groove 821, and both ends of the support rod 6 extend into the support groove 821. The cross section of the supporting groove 821 is V-shaped, and two bottom surfaces 822 forming the V-shape gradually extend obliquely from top to bottom in directions approaching each other until being connected to each other. Each of the bottom surfaces 822 is provided with a universal ball bearing 83, and the support bar 6 may be supported on the universal ball bearings 83. A pressing block 85 fixed to the universal ball seat 82 may be provided on the support rod 6 to restrict upward movement of the support rod 6. The cooperation of bracing piece 6 and supporting seat 8 can guarantee the height of bracing piece 6.

The second through hole 84 can be formed in the base 81 of the supporting seat 8 without contacting the screw 2 with the supporting seat 8, and the end of the screw 2 penetrates into the second through hole 84 and is not contacted with the wall surface forming the second through hole 84, so as to prevent the vibration of the screw 2 from being transmitted to the supporting seat 8.

The second displacement platform 4 is connected to the first displacement platform 3 to move with the first displacement platform 3. The second displacement platform 4 is located between the two supporting seats 8, and loads such as optical devices and the like needing to adjust positions can be arranged on the second displacement platform 4. The above-mentioned support rods 6 pass through the second displacement platform 4 and are fixed to each other, whereby the support rods 6 and the second displacement platform 4 can slide synchronously.

The electric displacement table further comprises a sliding support assembly so that the first displacement platform 3 and the second displacement platform 4 are in multi-point contact, thereby maintaining the height of the second displacement platform 4 and the distance between the second displacement platform 4 and the first displacement platform 3, and simultaneously reducing friction generated by the two platforms during displacement.

Specifically, the sliding support assembly comprises a sliding rail 91 fixedly arranged on the base 1 and a sliding rail sleeve 92 sleeved on the periphery of the sliding rail 91, and the sliding rail 91 and the sliding rail sleeve 92 are in sliding fit. The slide rail 91 extends in the same direction as the lead screw 2, in this embodiment a square slide rail, i.e. a square (rectangular or square) cross section. The slide rail 91 and the support bar 6 are located at opposite sides of the second displacement platform 4 so that the second displacement platform 4 can be kept balanced while being moved. The slide rail 91 is preferably made of ceramic, is not easy to wear, and can prolong the service life. A flat push bearing 93 is provided in the slide rail sleeve 92, and at least two of the flat push bearings are slidably engaged with the upper surface and the lower surface of the slide rail 91, respectively. A bearing seat 94 is disposed on the upper flat push bearing 93, and the upper surface of the bearing seat 94 may be flush with the upper surface of the slide rail sleeve 92 or slightly higher than the upper surface of the slide rail sleeve 92. The upper surface of the bearing seat 94 is recessed downward to form a spherical cap-shaped groove 941, and the groove 941 of the bearing seat 94 is exposed to the slide rail sleeve 92. The second displacement platform 4 is provided with the shaft connecting block 41, the shaft connecting block 41 and the second displacement platform can be integrally structured, the adjusting screw 95 passes through the shaft connecting block 41 from top to bottom so as to synchronously move with the second displacement platform 4, the ball head 951 of the adjusting screw 95 is arranged in the groove 941 of the bearing seat 94, the shape and the size of the ball head 951 are respectively matched with the groove 941, multipoint contact can be formed, the contact area can be increased, the pressure can be dispersed, the abrasion can be reduced, and the service life can be prolonged.

To prevent the flat push bearing 93 from deviating from the path, the slide rail sleeve 92 is connected to the second displacement platform 4 by an elastic member 96, and the slide rail sleeve 92 may be provided with a first pin 921 and the shaft connecting block 41 may be provided with a second pin 411, and both ends of the elastic member 96 are respectively connected to the first pin 921 and the second pin 411 so that the elastic member 96 is provided. Since the shaft connection block 41 is located above the slide rail sleeve 91, the elastic member 96 extends up and down. When the elastic member 96 is pulled upwards, the upper and lower flat pushing bearings 93 are in contact with the sliding rail 91, so that stability is improved, and friction force of the bottom of the sliding rail sleeve 92 to the sliding rail 91 is reduced. Meanwhile, the adjusting screw 95 is screwed downwards, so that the sliding rail sleeve 92 is ensured not to be contacted with the sliding rail 91, and unnecessary friction is avoided.

The two ends of the sliding rail 91 are provided with the stoppers 97, which can limit the sliding limit position of the sliding rail sleeve 92, so as to prevent the sliding rail sleeve 92 from separating from the sliding rail 91.

Claims

1. An electric displacement table comprises a base (1), a screw rod (2) rotatably arranged on the base (1), a driving mechanism (7) for driving the screw rod (2) to rotate around the axis of the screw rod, a first displacement platform (3) slidingly arranged on the base (1) and a second displacement platform (4) at a position for arranging a load, wherein the screw rod (2) penetrates through the first displacement platform (3) and is in threaded connection with the first displacement platform (3), and the second displacement platform (4) moves along with the first displacement platform (3); the method is characterized in that:

the electric displacement table further comprises a sliding support assembly, the sliding support assembly comprising:

the sliding rail (91) is fixedly arranged on the base (1) and extends in the same direction with the screw rod (2);

The sliding rail sleeve (92) is sleeved on the periphery of the sliding rail (91) and is in sliding fit with the sliding rail (91);

The bearing seat (94) is arranged on the sliding rail sleeve (92), the upper surface of the bearing seat (94) is recessed downwards to form a groove (941), and the groove (941) is exposed out of the sliding rail sleeve (92); and

The adjusting screw (95) moves synchronously with the second displacement platform (4), a ball head (951) of the adjusting screw (95) is arranged in a groove (941) of the bearing seat (94), and the shape and the size of the ball head (951) are matched with those of the groove (941).

2. The motorized displacement table of claim 1, wherein: the sliding support assembly further comprises a flat pushing bearing (93) in sliding fit with the sliding rail (91), and the flat pushing bearing (93) is arranged in the sliding rail sleeve (92).

3. The motorized displacement table of claim 2, wherein: the flat-pushing bearings (93) are at least two and are respectively in sliding fit with the upper surface and the lower surface of the sliding rail (91), and the bearing seats (94) are matched with the flat-pushing bearings (93) above.

4. An electric displacement table according to claim 2 or 3, characterized in that: the sliding rail sleeve (92) is connected with the second displacement platform (4) through an elastic piece (96).

5. An electric displacement table according to any one of claims 1 to 3, wherein: the second displacement platform (4) is provided with a shaft connecting block (41), and the adjusting screw (95) penetrates through the shaft connecting block (41) from top to bottom, so that the adjusting screw (95) and the second displacement platform (4) synchronously move.

6. An electric displacement table according to any one of claims 1 to 3, wherein: the electric displacement table further comprises support rods (6) and support seats (8), the support rods (6) are parallel to the lead screws (2) and penetrate through the second displacement platform (4), the support rods (6) are fixed with the second displacement platform (4), the number of the support seats (8) is two, and the support rods (6) are slidably supported on the support seats (8).

7. The motorized displacement table of claim 6, wherein: the supporting seat (8) comprises a universal ball seat (82), the upper surface of the universal ball seat (82) is sunken downwards to form a supporting groove (821), the cross section of the supporting groove (821) is V-shaped, and the supporting rod (6) is supported in the supporting groove (821).

8. The motorized displacement table of claim 7, wherein: the two bottom surfaces (822) of the support groove (821) forming the V shape gradually extend from top to bottom in a direction approaching each other in an inclined manner until being connected with each other, a first universal ball bearing (83) is arranged on each bottom surface (822), and the support rod (6) is supported on the first universal ball bearing (83).

9. The motorized displacement table of claim 8, wherein: a pressing block (85) fixed with the universal ball seat (82) is arranged on the supporting rod (6).

10. An electric displacement table according to any one of claims 1 to 3, wherein: two ends of the sliding rail (91) are provided with stop blocks (97).