CN204373536U - A kind of with the sine gauge clamped and mark - Google Patents

Abstract

The utility model discloses a kind of with the sine gauge clamped and mark, comprise rectangular parallelepiped, high precision cylinder, front apron, side shield, gauge block group and indicating gauge, the side end face of this rectangular parallelepiped and described side shield there is place's hinges, this side shield has the arcuate rotation groove of hollow out, this side shield is located position by another of a fixture and this rectangular parallelepiped side end face and is linked together, and this fixture is through described arcuate rotation groove and be threaded on another position, place of described rectangular parallelepiped side end face; This side shield upper end-face edge is equipped with at least one spring card along this boundary slip, and this side shield is arranged indicates along the length scale in glide direction.Measurement scales on the side shield upper rail of this device coordinates arcuate rotation groove to regulate the upper surface of side shield, add the function of the fixing measured workpiece of spring card mark on side shield, when well solving the measurement of external taper deviation, distance between the clamping of measured workpiece and display two measurement points, easy to use and reliable.

Description

A sine gauge with clamping and marking

technical field

The utility model relates to the technical field of measuring equipment design, in particular to a sine gauge with clamping and marking.

Background technique

The sine gauge is a measuring instrument designed according to the sine principle for precise measurement of taper deviation. The principle of the sine gauge to measure the taper deviation is based on the use of the sine function of a right triangle. The sine gauge is a gauge that uses sine to define the measurement angle and taper, also known as the sine ruler. It is mainly composed of a steel cuboid and two steel cylinders of the same diameter fixed at its two ends. The sine ruler is composed of an accurate steel cuboid and two precision cylinders. The diameters of the two cylinders are the same, and their center-to-center distances are required to be very precise, generally 100mm and 200mm.

Normally, the working surface of the sine gauge is parallel to the common tangent plane of the two equal-diameter cylinders at the bottom, and the sine gauge is also equipped with a front baffle and a side baffle to block and place the workpiece under test. According to the width B of the working face, it is divided into two types: wide type and narrow type. The distance L between the centers of the two cylinders has two specifications: 100mm and 200mm. Sine gauges are mainly used to measure small angles and cone angles of external cones. It needs to be used in conjunction with a gauge block, placed on a flat plate, and read with an indicator. The sine gauge is measured using the sine function relationship of a right triangle. During the measurement, according to the nominal cone angle α of the measured cone and the center distance L of the sine gauge cylinder, the size h of the gauge block is calculated according to the following formula: h=L*sinα, and the gauge block group combined according to the value of h is placed on one end of the sine gauge Under the cylinder, if the actual cone angle of the measured cone is equal to α, then the upper prime line of the cone must be parallel to the plate working surface, that is, the indication values of the two points a and b on both ends of the upper prime line of the indicator are the same, otherwise the indicator The indications at points a and b are different, they are Ma _and M _b respectively. At this time, the difference between the readings of points a and b (M _a -M _b ) and the distance l between points a and b ( It can be measured with a ruler or a vernier caliper) The ratio is the taper deviation Δc, and the positive and negative signs are taken into account:

Δc= (M _a -M _b )/l

After the taper deviation is multiplied by the conversion factor of radians to seconds, the cone angle deviation can be obtained.

During the detection process, there is no trace mark on the two measurement points a and b, and the distance l between the two points a and b is measured with a ruler or a vernier caliper based on follow-up memory and experience, so the error is large and the result is inaccurate; in addition , the working surface of the sine gauge is tilted, and the center of gravity of the workpiece deviates, resulting in unstable placement of the workpiece, and the prime line of the measured workpiece cannot be completely fitted with the working surface of the sine gauge, resulting in serious distortion of the test results.

Contents of the invention

The purpose of this utility model is to provide a clamping and marking sine gauge which reduces the measurement error value and avoids measurement distortion in view of the above-mentioned deficiencies in the prior art.

The technical solution adopted by the utility model is a sine gauge with clamping and marking, including a cuboid, a high-precision cylinder, a front baffle, a side baffle, a gauge block group and an indicator table, etc., the side end surface of the cuboid There is a movable hinge on the side baffle, and a hollow arc-shaped rotating groove is opened on the side baffle, and the side baffle is connected with another position on the side end surface of the cuboid through a fixing piece, The fixing piece passes through the arc-shaped rotating groove and is screwed to another position on the side end surface of the cuboid; the upper edge of the side baffle is equipped with at least one spring card that slides along the edge, and the side Length scale marks along the sliding direction are arranged on the baffle.

There are two spring cards.

The side baffle is movably connected to the end face of the sine gauge through a rotating pin shaft.

The fixing member is a fastening screw.

Angle scale marks are engraved on the arc-shaped rotating groove.

The upper edge of the upper end of the side baffle is provided with a "T" guide rail corresponding to the "T" groove at the end of the spring card, and the spring card is positioned and clamped on the guide rail by another fastening screw.

Further, the guide rail is provided with a length scale mark for measuring the length.

Further, the spring card is provided with a reading mark at one end of the side baffle, and a "U"-shaped opening is provided at the end away from the side baffle.

Furthermore, there is a frame slot in the direction of the axis of the high-precision cylinder at the position of the reading mark, and a frame slot through which a spring card penetrates.

The beneficial effects of the utility model are: the measurement scale on the guide rail on the side baffle of the utility model cooperates with the arc-shaped rotating groove to adjust the upper end surface of the side baffle to make it parallel to the surface of the workbench, plus the spring on the side baffle The function of the card to fix the workpiece under test, and the application of the length mark to display the distance between the two measurement points, which solves the error and distortion of the workpiece installation and measurement.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is a structural schematic diagram of the utility model after the workpiece to be tested is installed.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic diagram of the assembly of the side baffle and the spring card of the present invention.

FIG. 4 is a top view of FIG. 3 .

Fig. 5 is a vertical sectional side view of the guide rail of the present invention.

The meaning of the codes in the figure: 1—cuboid; 2—high precision cylinder; 3—front baffle; 4—side baffle; 401—arc-shaped rotating groove; 402—spring card; 403—rotating pin; 404—fastening screw ;405—guide rail; 406—fastening screw; 407—length scale mark; 408—reading mark; 409—"U"-shaped opening; 410—angle scale mark; 411—frame groove; 5—gauge block group; 6— Indicating table; 7—measured workpiece; 8—workbench; a—measurement point; b—measurement point.

Detailed ways

See Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Fig. 5: the utility model is a kind of sine gauge with clamping and marking, comprises cuboid 1, high-precision cylinder 2, front baffle 3, side baffle Plate 4, gauge block set 5 and indicator gauge 6.

Among them, the sine gauge is arranged on the workbench 8, and the lower end of the cuboid 1 in the sine gauge is provided with two high-precision cylinders 2, and the lower end of a high-precision cylinder 2 is auxiliary equipped with a gauge block group 5, and one side of the sine gauge is assisted by a The bracket and the magnetic table base of the measurement indicator 6 are used to support the indicator 6 to measure the readings at two points on the same prime line on the surface of the measured workpiece 7. The upper end of the cuboid 1 in the sine gauge is equipped with a front baffle 3 And side baffle 4, the upper edge of this front baffle 3 and side baffle 4 all exceeds the end face of rectangular parallelepiped 1 measuring and releasing measured workpiece 7;

The side end surface of the cuboid 1 and the side baffle 4 are movably connected by a rotating pin 403 (or other articulated connections, etc.), and the side baffle 4 is provided with a length scale mark for measuring the length 407, the side baffle 4 is provided with a hollow arc-shaped rotating groove 401, and an angle scale mark 410 is engraved beside the arc-shaped rotating groove 401, and the scale mark 410 can be on the inner side of the arc formed by the arc-shaped rotating groove 401 One end is engraved, and it can also be engraved on the outer end. The side baffle 4 is connected to another position on the side end surface of the cuboid 1 through a fastening screw 404 (which can be other fixing parts, such as: bolt connection, etc.). connected together, the fastening screw 404 passes through the arc-shaped rotation slot 401 and is screwed to another position on the side end surface of the cuboid 1, when the side baffle 4 needs to be adjusted to a new inclination angle α Satisfied that the side fence 4 still maintains the horizontal measurement state position of the length scale mark 407 on the side fence 4 at this moment (that is, the measurement scale on the guide rail on the side fence 4 is required to cooperate with the arc-shaped rotating groove 401 to adjust the position of the side fence 4 upper end surface, so that it is parallel to the surface of the workbench 8), then the arc-shaped rotating groove 401 will be rotated along the arc-shaped rotation of the rotating groove, and its arc-shaped rotating groove will be limited by the fastening screw 404 passing through the arc-shaped rotating groove 401 The rotation range of 401 is determined to reach the required position, and the fastening screw 404 (or other threaded parts) is fastened to the current position of the arc-shaped rotation groove 401. When the measurement side baffle 4 needs to be adjusted again, first It is advisable to loosen the fastening screw 404 until the arc-shaped rotating groove 401 rotates along the arc-shaped rotation of the rotating groove, and then rotate and adjust the arc-shaped rotating groove 401 of the side baffle 4 to reach the specified length scale on the side baffle 4 Mark 407 the position of the horizontal measurement state. Once again, fasten the fastening screw 404 to the current position of the arc-shaped rotating groove 401 to reduce the measurement error value and avoid measurement distortion.

Two spring cards 402 sliding along the edge are provided on the upper edge of the side baffle 1 (when the spring card 402 is one, accurate mapping can only be carried out by measuring point a or b at one end, and the other end can only be measured by measuring point b). For human reading, when there are three spring cards 402, two of them are accurate mapping data, and the other is fixed and clamped again, so two spring cards 402 are generally selected), and the two spring cards 402 of the sine gauge are more It is convenient and accurate to record the positions of the two ends of measuring point a and measuring point b of the measured workpiece, avoiding the length error between the two measuring points caused by the inability to accurately record the position of the measured point, and the side baffle 4 There is a "T"-shaped guide rail 405 on the upper edge of the upper end (of course, other sliding methods can be selected according to the actual situation, such as: flexible sliding of rollers, etc.), corresponding to the "T"-shaped slot at the end of the spring card 402 The spring card 402 is positioned and clamped on the guide rail 405 by another fastening screw 406 to ensure that the spring card 402 can accurately move along the guide rail 405 to the measurement position of the workpiece 7 to be positioned and clamped. The left and right movement cooperates with the position adjustment of the measured workpiece to realize the clamping and fixing of the measured workpiece 7, so that the measured data will not be distorted during the measurement, and the measured workpiece 7 can be read through the length scale mark set on the side fence 4 The length between measurement point a and measurement point b.

Further, in order to make the mark scale more intuitive and easy to read, the length scale mark 407 for measuring the length is arranged on the upper end surface of the guide rail 405, and at the same time, the spring card 402 is provided with a read mark 408 at one end of the side fence 4, which can be more To accurately and quickly point out the reading position, a "U"-shaped opening 409 is provided at the end far away from the side baffle 4, so that the indicator 6 can better select the best measuring position and measuring direction.

Furthermore, the reading mark 408 has a frame groove 411 along the axis direction of the high-precision cylinder 2, and a frame groove 411 that penetrates the spring card 402, so that when reading, the length scale mark 407 is not blocked by the spring card 402. The line of sight of the reading can be perpendicular to the plane of the scale marked on the scale, and the reading is more accurate.

The above technical solutions are only used to illustrate the utility model, not to limit it.

Claims (9)

1. A sine gauge with clamping and marking, including cuboid (1), high-precision cylinder (2), front baffle (3), side baffle (4), gauge block group (5) and indicator (6), characterized in that: there is a living hinge on the side end surface of the cuboid (1) and the side baffle (4), and a hollow arc-shaped rotating groove (401) is opened on the side baffle (4) ), the side baffle (4) is connected with another position on the side end surface of the cuboid (1) through a fixing piece, and the fixing piece passes through the arc-shaped rotating groove (401) and is threaded At the other position on the side end surface of the cuboid (1); the upper edge of the side baffle (4) is equipped with at least one spring card (402) sliding along the edge, and the side baffle (4) ) to set the length scale mark (407) along the sliding direction. 2. The sine gauge with clamping and marking according to claim 1, characterized in that: there are two spring cards (402). 3 . The clamping and marking sine gauge according to claim 1 , characterized in that: the side baffle ( 4 ) is movably connected to the end surface of the sine gauge through a rotating pin ( 403 ). 4 . 4. The sine gauge with clamping and marking according to claim 1, characterized in that: the fixing part is a fastening screw (404). 5. The sine gauge with clamping and marking according to claim 1, characterized in that: the arc-shaped rotating groove (401) is engraved with an angle scale mark (410). 6. The sine gauge with clamping and marking according to claim 1, characterized in that: the upper edge of the side baffle (4) is provided with a "T"-shaped guide rail (405), corresponding to the spring card (402 ) to match the "T" groove at the end, and the spring card (402) is positioned and clamped on the guide rail by another fastening screw (406). 7. The sine gauge with clamping and marking according to claim 6, characterized in that: the guide rail (405) is provided with a length scale mark (407) for measuring the length. 8. The sine gauge with clamping and marking according to claim 1 or 6, characterized in that: the spring card (402) is provided with a reading mark (408) at one end of the side baffle (4), A "U"-shaped opening (409) is provided at one end of the side baffle. 9. The sine gauge with clamping and marking according to claim 8, characterized in that: the reading mark (408) has a frame slot along the axis of the high-precision cylinder and has a penetrating spring card (411).