CN204438992U - A kind of precision measurement apparatus of high precision verticality - Google Patents

Abstract

The utility model provides a precision measuring device for high-precision verticality, which includes a height vernier caliper and a workpiece fixture. A torsion spring comparator is installed on the height vernier caliper. The torsion spring comparator is installed on the clamping head of the height vernier caliper. The test head is vertically downward; the workpiece fixture includes a high-precision hexahedron, and there are screw holes on the surface of the high-precision hexahedron. The pressure plate is connected to a mounting surface of the high-precision hexahedron through fasteners and screw holes. There is a backing plate matching the thickness of the workpiece between the mounting surfaces. The torsion spring comparator is installed on the clamping head of the height vernier caliper through an extension rod; on the base of the height vernier caliper, a counterweight iron is installed on the other side symmetrical to the test head. The length, width and height of the high-precision hexahedron are different, and there are screw holes on at least three asymmetric faces. The utility model realizes fast and precise measurement of high-precision verticality at the grinding processing site, saves time for repeated repairing and researching of workpieces, improves production efficiency, and improves precision processing quality.

Description

A precision measuring device for high-precision perpendicularity

technical field

The utility model relates to a precision measuring device for high-precision verticality, in particular to a precision measuring device for high-precision verticality suitable for precision grinding processing, and belongs to the technical field of mechanical assembly technology and equipment.

Background technique

The shape and position error control of precision parts is the basis to ensure the assembly and debugging of precision products. The size of the shape and position error value will directly affect the relevant design technical indicators of the product. In actual production, the shape and position tolerance design of many high-precision parts is required to be controlled within the micron level. These high-precision parts are usually processed by machining combined with manual grinding. During the grinding process, high-precision measuring instruments are required. Or measuring instruments are used to test the processing accuracy, and then repeated researches are carried out according to the test results. From the actual detection process, the difficulty and detection time of the detection method determine the processing cycle and processing efficiency of the part. However, the use of high-precision measuring instruments will lead to a long processing cycle for high-precision parts, and there will be multiple inspections and repeated repairs; in addition, high-precision measuring instruments generally cannot be placed on the processing site, and the workpiece needs to be moved during use, which is extremely inconvenient and difficult to use. affect the processing cycle. Therefore, it is necessary to design a device with simple structure and convenient operation to meet the precision measurement of high-precision verticality in the precision grinding process.

Contents of the invention

The purpose of this utility model is to provide a precision measuring device for high-precision verticality with simple structure, convenient use, quick manufacture and low cost for the precision measurement requirements of high-precision verticality in the precision grinding process. This device can not only improve the passing rate of parts for one-time inspection, but also greatly improve work efficiency, reduce overall cost, and ensure processing accuracy and product quality.

The utility model is realized through the following technical solutions: the high-precision verticality precision measuring device includes a height vernier caliper and a workpiece fixture, a torsion spring comparator is installed on the height vernier caliper, and the torsion spring comparator is installed on the clamping head of the height vernier caliper , the test head of the torsion spring comparator is vertically downward; the workpiece fixture includes a high-precision hexahedron, and there are screw holes on the surface of the high-precision hexahedron. The pressure plate is connected to a mounting surface of the high-precision hexahedron through fasteners and screw holes. There is a backing plate matching the thickness of the workpiece between the mounting surface of the high-precision hexahedron.

The torsion spring comparator is installed on the clamping head of the height vernier caliper through an extension rod; on the base of the height vernier caliper, a counterweight iron is installed on the other side symmetrical to the test head.

The length, width and height of the high-precision hexahedron are different, and there are screw holes on at least three asymmetrical surfaces.

The height vernier caliper and workpiece fixture are placed on the 00 grade marble platform.

The flatness of the six faces of the high-precision hexahedron, the perpendicularity of the adjacent faces, and the parallelism of the opposite faces are all within the micron level.

The utility model has the advantages: the utility model has a simple structure, can realize rapid and precise measurement of high-precision verticality at the grinding processing site, saves time for repeated repairing of workpieces, improves production efficiency, and improves precision processing quality.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure and the use state of the utility model.

Fig. 2 is a schematic diagram of the use of the high-precision hexahedron fixture of the present invention.

Detailed ways

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

As shown in Fig. 1 and Fig. 2: a kind of precision measuring device of high-precision verticality of the utility model comprises a height vernier caliper 1 and a workpiece fixture 3, and a torsion spring comparator 2 is installed on the height vernier caliper 1, and the torsion spring comparator 2 is installed on On the clamping head 1a of the vernier caliper, the test head 2a of the torsion spring comparator 2 is vertically downward; the workpiece fixture 3 includes a high-precision hexahedron 3a, and there is a screw hole 3b on the surface of the high-precision hexahedron 3a, and the pressure plate 3c passes through the fastener 3d And the screw hole 3b is connected to a mounting surface of the high-precision hexahedron 3a, and a backing plate 3e matching the thickness of the workpiece is arranged between the pressing plate 3c and the mounting surface of the high-precision hexahedron 3a.

Described torsion spring comparator 2 is installed on the clamping head 1a of height vernier caliper by extension bar 4; On the base 1b of height vernier caliper 1, counterweight iron 5 is installed on the other side symmetrical with test head 1a, guarantees its Stability while working.

The length, width and height of the high-precision hexahedron 3a are different, and there are screw holes 3b on at least three asymmetrical surfaces, and there are three mounting surfaces for selection, so as to be suitable for different workpieces.

The height vernier caliper 1 and the workpiece fixture 3 are placed on the 00 grade marble platform 6 .

Take Fig. 1, Fig. 2 as example to specifically illustrate the implementation process of the present utility model. The flatness of the six surfaces of the high-precision hexahedron 3a, the perpendicularity of the adjacent surfaces, and the parallelism of the opposite surfaces are all within the micron level. The workpiece fixture 3 is placed on the 00-grade marble platform 6, and the reference surface has been ground. The processed workpiece 7 fits the suitable installation surface of the high-precision hexahedron 3a, and the surface to be tested of the workpiece 7 is facing downward, so as to ensure that the contact surface between the workpiece 7 and the 00-grade marble platform 6 is clean and free of residue, press it tightly by hand and place it in the 00-grade Slide repeatedly on the marble platform 6 several times to ensure that the two planes are coplanar. The backing plate 3e is placed on the upper side of the screw hole 3b, and the workpiece 7 and the backing plate 3e are fixed on the high-precision hexahedron 3a with the pressing plate 3c and the fastener 3d; Rotate the workpiece fixture 3 and the workpiece 7 by 180°, make the detection surface of the workpiece 7 face up, place the height vernier caliper 1 installed with the torsion spring comparator 2 on the 00-grade marble platform 6, use the height vernier caliper 1, and the torsion spring The test head 2a of the comparator 2 is aligned with the detection surface of the workpiece 7, and the effective contact distance between the test head 2a of the torsion spring comparator 2 and the workpiece 7 to be measured is accurately adjusted through the micro-knob 1c of the height vernier caliper to ensure the detection margin and avoid The instrument is damaged due to human error. During detection, move the workpiece 6 to be measured in the horizontal direction, and use the torsion spring comparator 2 to detect various parts of the workpiece plane, measure the numerical value of this surface, and record the high point value, and grind the parts with large numerical values until until qualified.

Those skilled in the art can easily understand that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the principles of the present invention, etc., All should be included within the protection scope of the present utility model.

Claims (5)

1. the precision measurement apparatus of a high precision verticality, comprise vernier height gauge (1) and workholder, it is characterized in that: twisted-coil comparator (2) is installed on vernier height gauge (1), twisted-coil comparator (2) is arranged on the clamping head (1a) of vernier height gauge, and the measuring head (2a) of twisted-coil comparator (2) vertically downward; Workholder (3) comprises high precision hexahedron (3a), the face of high precision hexahedron (3a) there is screw (3b), pressing plate (3c) is connected on an installed surface of high precision hexahedron (3a) by securing member (3d) and screw (3b), has the backing plate (3e) mated with thickness of workpiece between pressing plate (3c) and the installed surface of high precision hexahedron (3a).

2. the precision measurement apparatus of high precision verticality according to claim 1, is characterized in that: twisted-coil comparator (2) is arranged on the clamping head (1a) of vernier height gauge by extension rod (4); The base (1b) of vernier height gauge (1) above, at the opposite side symmetrical with measuring head (1a) is provided with balance weight iron (5).

3. the precision measurement apparatus of high precision verticality according to claim 1 and 2, is characterized in that: the length, width and height of high precision hexahedron (3a) not etc., at least do not have screw (3b) on three asymmetric.

4. the precision measurement apparatus of high precision verticality according to claim 1 and 2, is characterized in that: vernier height gauge (1) and workholder (3) are placed on 00 grade of marble platform (6).

5. the precision measurement apparatus of high precision verticality according to claim 1 and 2, is characterized in that: the depth of parallelism of the flatness in six faces of high precision hexahedron (3a), the verticality of adjacent surface, opposite face is all within micron order.