CN205957844U - Bridge plate for measuring position precision between prismatic guide rail and dovetail guide rail - Google Patents

Abstract

The utility model discloses a bridge plate for measuring the position accuracy between a prismatic guide rail and a dovetail guide rail, comprising a main board, a measuring component and a reference surface component installed on the main board; the measuring component includes a lever structure and a dial gauge , the fulcrum of the lever structure is movably installed on the main board, the lower end of the lever structure is connected with a spherical structure for contacting the dovetail guide rail surface, the upper end of the lever structure is in contact with the head of the dial gauge; the datum surface assembly is clamped At and in contact with the prismatic rail surface. The utility model takes the surface of the prismatic guide rail as the reference plane, abuts the two cylindrical mandrels of the reference surface assembly on the two side surfaces of the prismatic guide rail respectively, and contacts the spherical structure at the lower end of the lever structure with the surface of the dovetail guide rail to pull the The bridge plate structure and the lever structure push the dial gauge around the fulcrum, and observe the dynamic changes of the dial gauge connected to the upper end of the lever structure to detect whether the measured dovetail guide rail surface is parallel to the reference plane.

Description

Bridge plate for measuring positional accuracy between prismatic and dovetail rails

technical field

The utility model relates to a bridge plate for measuring the position accuracy between a prismatic guide rail and a dovetail guide rail, belonging to the technical field of geometric accuracy measurement of machine tool guide rails.

Background technique

The bridge plate is a metal plate with two supporting surfaces, and the bridge plate directly affects the acquisition of flatness measurement data and the evaluation of error values. The flatness and straightness of tables, guide rails and precision workpieces.

The combination of prismatic guideway and dovetail guideway is relatively rare, and generally there is no special inspection bridge. We provide an inspection bridge to measure the position accuracy of prismatic guideway and dovetail guideway.

Contents of the invention

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a bridge plate for measuring the position accuracy between the prismatic guide rail and the dovetail guide rail, so as to solve the measurement problem of the parallelism error between the prismatic guide rail and the dovetail guide rail.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a bridge plate for measuring the position accuracy between the prismatic guide rail and the dovetail guide rail, including a main board, and a measuring component and a reference plane component installed on the main board;

The measuring assembly includes a lever structure and a dial indicator. The fulcrum of the lever structure is movably installed on the main board. The lower end of the lever structure is connected with a spherical structure for contacting with the dovetail guide rail. Table header contact;

The datum surface component is clamped on the surface of the prismatic guide rail and is in contact with the surface of the prismatic guide rail.

Further provide a connection structure between the lever structure and the main board, the main board is provided with a mounting through hole, the opposite sides of the fulcrum of the lever structure are respectively provided with a pin hole, the inside of the mounting through hole is provided with the above-mentioned The thimble that matches the thimble hole, the lever structure is installed at the installation through hole of the main board through the cooperation between the thimble hole and the thimble, so that the upper end of the lever structure squeezes the dial indicator head under the action of the lower spherical structure, so that The dial gauge changes accordingly.

Further in order to contact with the dial gauge more accurately, a locating pin is installed on the upper end of the lever structure, and the side of the locating pin near the dial gauge is a vertical plane, and the head of the dial gauge is against the side of the locating pin. above the vertical plane.

Further, the leverage ratio of the leverage structure is 1:1.

Further provide a specific structure of the reference surface assembly, the reference surface assembly includes a connecting rod and two cylindrical mandrels fixed on the connecting rod, and the two cylindrical mandrels respectively abut against two on the side.

Further, for the case of a plane guide rail, the utility model is also equipped with a plane guide rail positioning structure. The other side of the dovetail guide rail also includes a plane guide rail. , the plate assembly is used for contacting with the plane guide rail, and the plate assembly is provided with a clamping hole matched with the ball end of the ball screw, and the upper end of the ball screw passes through the main board and is installed on the main board through a nut.

Further, the inner surface of the clamping hole is an upright conical surface, so as to clamp the ball end of the ball screw.

After adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

1) In this utility model, the surface of the prismatic guide rail is used as the reference surface, and the two cylindrical mandrels of the reference surface assembly are respectively abutted on the two sides of the prismatic guide rail, and the spherical structure at the lower end of the lever structure is in contact with the surface of the dovetail guide rail. Pull the bridge plate structure, the lever structure pushes the dial indicator around the fulcrum, observe the dynamic changes of the dial indicator connected to the upper end of the lever structure to detect whether the measured dovetail guide rail surface is parallel to the reference plane;

2) The reference assembly of the present utility model also includes a flat plate assembly and a ball screw, so that when the reference surface contains a plane guide rail, the plane guide rail surface and the prismatic guide rail surface are used as a joint reference, and the structure of the bridge plate is pulled to observe the position of the upper end of the lever structure. The dynamic change of the connected dial indicator is used to detect whether the measured dovetail guide surface is parallel to the reference plane;

3) The utility model can ensure that the measuring component and the reference surface component have the best contact with the tested surface and the positioning surface respectively, and the dynamic changes of the dial indicator can clearly reflect the position where the error occurs. When the tested surface When there is a change, it can be reflected sensitively and truthfully.

Description of drawings

Fig. 1 is the utilization device diagram of the present utility model;

Fig. 2 is the A-A sectional enlarged view of Fig. 1;

Fig. 3 is a structural schematic diagram of a prismatic dovetail guide rail;

In the figure, 1. Cylindrical mandrel, 2. Connecting rod, 3. Main board, 4. Dial indicator, 5. Lever structure, 6. Fulcrum, 7. Spherical structure, 8. Nut, 9. Ball screw, 10. Flat assembly, 11, alignment pin.

detailed description

In order to make the content of the utility model more clearly understood, the utility model will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, and Figure 3, a bridge plate for measuring the positional accuracy between a prismatic guide rail and a dovetail guide rail includes a main board 3, and a measurement component and a reference plane component installed on the main board 3;

The measuring assembly includes a lever structure 5 and a dial gauge 4, the fulcrum 6 of the lever structure 5 is movably installed on the main board 3, the lower end of the lever structure 5 is connected with a spherical structure 7 for contacting with the dovetail guide rail surface, the The upper end of the lever structure 5 is in contact with the head of the dial gauge 4;

The datum surface component is clamped on the surface of the prismatic guide rail and is in contact with the surface of the prismatic guide rail.

Preferably, as shown in Fig. 1 and Fig. 2, an installation through hole is opened on the said main board 3, and an ejector pin hole is respectively provided on the opposite side surfaces of the fulcrum 6 of the said lever structure 5, and an inner side of the installation through hole is provided with There is a thimble matching with the above-mentioned thimble hole, and the lever structure 5 is installed at the installation through hole of the main board 3 through the cooperation of the thimble hole and the thimble, so that the upper end of the lever structure 5 is squeezed under the action of the lower spherical structure 7. Dial gauge 4 header, so that dial gauge 4 can be changed accordingly.

Optionally, as shown in Figure 1, a positioning pin 11 is installed on the upper end of the lever structure 5, and the side of the positioning pin 11 close to the dial gauge 4 is a vertical plane, and the dial gauge 4 head is against the On the above-mentioned vertical plane of the positioning pin 11.

Preferably, as shown in FIG. 1 , the leverage ratio of the lever structure 5 is 1:1.

Preferably, as shown in Figure 1, in order to fit better with the dovetail guide rail surface, the lower end of the lever structure 5 has a curved section, which extends into the dovetail guide rail and fits with the dovetail guide rail surface; the lever ratio 1:1 already includes the curved section at the lower end.

Optionally, as shown in Figures 1 and 3, the datum assembly includes a connecting rod 2 and two cylindrical mandrels 1 fixed on the connecting rod 2, and the two cylindrical mandrels 1 are installed on the joint by screws. On the rod 2, the two cylindrical mandrels 1 are respectively abutted on the two sides of the prismatic guide rail, and the two sides of the prismatic guide rail are respectively surface I and surface II; in actual use, according to the two sides of the prismatic guide rail, According to the different inclination angles of the two sides, adjust the relative position of the two cylindrical mandrels 1, and always ensure that the two cylindrical mandrels 1 are in contact with the two sides of the prismatic guide rail.

Further, when the other side of the dovetail guide rail also includes a planar guide rail, the surface of the planar guide rail is plane IV. In order to increase adaptability, the reference plane assembly also includes a flat plate assembly 10 and a ball screw 9 mounted on the planar guide rail, The plate assembly 10 is used to contact the surface of the plane guide rail. The plate assembly 10 is provided with a clamping hole that matches the ball end of the ball screw 9. The upper end of the ball screw 9 penetrates the main board 3 and is installed through a nut 8. On motherboard 3.

Preferably, as shown in FIG. 1 and FIG. 2 , the inner surface of the clamping hole is an upright conical surface, so as to clamp the ball end of the ball screw 9 .

The utility model can also meet the requirements of measuring the relative position accuracy of the plane guide rail and the prismatic guide rail. At this time, with the prismatic guide rail surface as the reference and the plane guide rail surface as the measurement surface, two cylindrical mandrels 1 are respectively abutted on the edge On the two sides of the shaped guide rail, contact the flat panel assembly 10 with the surface of the plane guide rail, and then use a dial indicator to contact its contacts on the plane guide rail surface, and drag the bridge plate, the fluctuation value of the pointer of the dial indicator It reflects the parallelism error of the plane guide rail facing the prismatic guide rail surface.

In the utility model, the surface of the prismatic guide rail is used as the reference surface, and the two cylindrical mandrels 1 of the reference surface assembly are respectively abutted on the two sides of the prismatic guide rail, and the spherical structure 7 at the lower end of the lever structure 5 is in contact with the surface of the dovetail guide rail. , pull the bridge plate structure, the lever structure 5 pushes the dial gauge 4 with the fulcrum 6 as the center, and observes the dynamic change of the dial gauge 4 connected to the upper end of the lever structure 5 to detect whether the measured dovetail guide rail surface is parallel to the reference plane.

The reference assembly of the present utility model also includes a flat plate assembly 10 and a ball screw 9, so that when the reference surface contains a plane guide rail, the plane guide rail surface and the prismatic guide rail surface are used as a joint reference, and the structure of the bridge plate is pulled to observe the position of the upper end of the lever structure. The dynamic change of the connected dial gauge is used to detect whether the measured dovetail guide surface is parallel to the reference plane.

The utility model can ensure the best contact between the measuring component and the datum surface component and the tested surface and the positioning surface respectively, and the dynamic change of the dial gauge 4 can clearly reflect the position where the error occurs. Changes can be sensitively and faithfully reflected.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the utility model in detail. It should be understood that the above descriptions are only specific embodiments of the utility model and are not intended to be used To limit the utility model, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims (7)

1. a kind of measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that：Including mainboard (3), with And it is arranged on the measurement assembly on mainboard (3) and datum level assembly；

Described measurement assembly includes a lever construction (5) and amesdial (4), and the fulcrum (6) of lever construction (5) is movably arranged on master On plate (3), the lower end of described lever construction (5) is connected with the spherical structure (7) for contacting, described lever with dovetail guide face The upper end of structure (5) is contacted with amesdial (4) gauge outfit；

Described datum level assembly is connected at prismatic guide rail face, and contacts with prismatic guide rail face.

2. according to claim 1 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： One installation through-hole is had on described mainboard (3), the relative two sides of the described fulcrum (6) of lever construction (5) are respectively provided with one Centre hole, the inner side of installation through-hole is provided with the thimble matching with above-mentioned centre hole, and lever construction (5) passes through centre hole and thimble Cooperation be arranged at the installation through-hole of mainboard (3), so that the effect in lower end spherical structure (7) for the upper end of lever construction (5) Lower extruding amesdial (4) gauge outfit, so that amesdial (4) does respective change.

3. according to claim 2 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： The upper end of described lever construction (5) is provided with an alignment pin (11), and alignment pin (11) is perpendicular near the one side of amesdial (4) Straight plane, described amesdial (4) gauge outfit is against on the above-mentioned perpendicular of alignment pin (11).

4. according to claim 3 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： The lever ratio of described lever construction (5) is 1：1.

5. according to claim 4 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： Described datum level assembly includes connecting rod (2) and two cylindrical mandrels (1) being fixed in connecting rod (2), described two circles Post plug (1) is connected on two sides of prismatic guide rail respectively.

6. according to claim 5 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： The opposite side of dovetail guide also includes a flat guide, and described datum level assembly also includes the flat board group being arranged on flat guide Part (10) and ball screw (9), flat component (10) is used for contacting with flat guide, and described flat component (10) has and ball The hole clipping of the bulb end cooperation of head screw rod (9), the upper end of described ball screw (9) is run through mainboard (3) and is pacified by a nut (8) It is contained on mainboard (3).

7. according to claim 6 measurement prismatic guide rail and dovetail guide between positional precision bridge plate it is characterised in that： The medial surface of described hole clipping is upright taper seat, to block the bulb end of ball screw (9).