CN210004984U

CN210004984U - deep-position precision measuring device

Info

Publication number: CN210004984U
Application number: CN201921159517.XU
Authority: CN
Inventors: 何益林; 何智敏; 刘源昌
Original assignee: Foshan Nanhai Huada-Takagi Mold Co Ltd
Current assignee: Foshan Nanhai Huada-Takagi Mold Co Ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-01-31
Anticipated expiration: 2029-07-22

Abstract

The utility model relates to a precision measurement device of deep position, including the spark machine, the spark machine still includes the main shaft, surveys subassembly and benchmark ball, the main shaft is connected with survey subassembly detachably, survey the subassembly including surveying ball and extension bar, the end of extension bar with the main shaft is connected, the end in addition of extension bar is connected with the detection ball, the workstation, the upper surface of workstation is table surface, table surface is for the plane that is used for placing the work piece that awaits measuring, fixed on the table surface the benchmark ball through being connected with the extension bar with surveying the ball for it can stretch into to survey the ball the depths of deep position to select suitable extension bar according to keeping away empty the requirement, utilize the suggestion that the spark machine response stopped and the function of instructing the coordinate, measure the size of deep position, and replace the probe through surveying the ball, the utility model discloses a device range of application more reduces follow-up process and repeats the step of confirming the size through verifying.

Description

deep-position precision measuring device

Technical Field

The utility model belongs to the technical field of machining measures, concretely relates to precision measurement device of deep level.

Background

The second measurement means is advanced, comprises high-precision large-scale shaft parts in-situ measurement, advanced machining online measurement technology and the like, is a processing measurement technology realized under various small-batch production conditions, and the third measurement means is equipment such as an optical scanner and the like, a reflective coating is required to be uniformly coated on the measurement positions of the parts, a reflection sheet with a reflection function is required to achieve the measurement purpose through an optical path, and no matter whether the measurement means such as the ordinary measurement instrument, the three-coordinate measurement or the on-line detection measurement or the optical scanner is adopted, the measurement means cannot achieve the measurement result of deep slots, deep slots and narrow holes, the size of the parts cannot be verified through the repeated measurement, and the subsequent dimension consumption is required to be ensured through the time consumption and the like.

Therefore, there is a need to provide measuring devices with simpler measuring methods and more precise measuring precision to overcome the above disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing accurate measuring device to the deep position of being applied to among the machining, the utility model discloses in the deep position, mean by narrower and the great hole of degree of depth, groove, slit etc. of opening.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

A precision measuring device for depth position, comprising:

the spark machine also comprises a main shaft, a detection component and a reference ball, wherein the main shaft is detachably connected with the detection component, the detection component comprises a detection ball and an extension rod, the end of the extension rod is connected with the main shaft, and the other end of the extension rod is connected with the detection ball;

the upper surface of the workbench is a workbench surface, the workbench surface is a plane for placing a workpiece to be measured, and the workbench surface is fixed with the reference ball.

The spark machine is a commercially available spark machine.

The utility model provides an accurate measuring device is through being connected with the extension bar surveying the ball for survey the ball and can stretch into the depths of deep position, and according to keeping away the sky requirement and selecting suitable extension bar, utilize the suggestion that the response of spark machine stopped and instruct the function of coordinate, measure the size of deep position, and replace the probe through surveying the ball, the utility model discloses a device range of application is more , and just, narrow and also can accurately measure its coordinate and according to coordinate calculation distance when dark such as hole, groove, reduce follow-up process and relapse through verifying the step of confirming the size.

Preferably, the reference ball is fixed to a reference ball seat fixed to the work surface. Through the position fixing of the benchmark ball, the same coordinate system can be established during each measurement, and therefore the measurement accuracy is guaranteed.

Specifically, the reference ball seat comprises a cylindrical base and a fixed rod, the cylindrical base is fixed on the working table, the base is connected with end of the fixed rod, and the other end of the fixed rod is fixed with the reference ball, so that the reference ball is stably fixed on the working table, and three-dimensional coordinate systems are accurately established.

Specifically, the main shaft and the extension bar are fixed through a connecting block.

Preferably, the detection assembly is plural.

Specifically, the detection assembly comprises a plurality of extension bars with different lengths and diameters and a plurality of detection balls with different diameters, and the main shaft is connected with the extension bars respectively. Therefore, the main shaft is respectively connected with extension bars and detection balls with different specifications and sizes so as to be suitable for different deep positions.

Preferably, the diameter D1 of the extension rod is smaller than the diameter D2 of the probe ball.

Even if the length of the extension rod is too large or the diameter is too small, and a detection assembly can generate certain verticality deviation during measurement, the measuring device of the invention can still ensure the accuracy of the measuring result, therefore, the measuring device of the invention reduces the precision requirement on the device per se, particularly, the verticality deviation can be controlled within 0-0.1mm as usual.

Drawings

FIG. 1 is a schematic cross-sectional view of a precision measuring apparatus according to embodiment 1;

FIG. 2 is a schematic structural view of a probe assembly according to embodiment 1;

FIG. 3 is a schematic structural view of the reference ball seat of example 1;

fig. 4 is a schematic structural view of a detection assembly of embodiment 2.

Detailed Description

The technical solution of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Example 1

Referring to fig. 1-3, kinds of deep precision measuring devices comprise:

the spark machine also comprises a main shaft, a detection assembly 300 and a reference ball 3, wherein the main shaft is detachably connected with the detection assembly 300, the detection assembly 300 comprises a detection ball 4 and an extension bar 11, the end of the extension bar 11 is connected with the main shaft, and the other end of the extension bar 11 is connected with the detection ball 4;

workstation 2, the upper surface of workstation 2 is table surface 21, table surface 21 is the plane that is used for placing the work piece that awaits measuring, table surface 21 is last to be fixed benchmark ball 3.

The spark machine is a commercially available spark machine.

The reference ball 3 is fixed to a reference ball seat 31, and the reference ball seat 31 is fixed to the work surface 21. Through the position fixing of the reference ball 3, the same coordinate system can be established during each measurement, and the measurement accuracy is guaranteed.

Specifically, the reference ball seat 31 includes a cylindrical base 310 and a fixing rod 311, the cylindrical base 310 is fixed on the work table 21, the base 310 is connected to the end of the fixing rod 311, and the other end end of the fixing rod 311 is fixed to the reference ball 3, so that the reference ball is stably fixed on the work table, and three-dimensional coordinate systems can be accurately established.

The main shaft and the extension bar 11 are fixed through a connecting block 12.

The diameter D1 of the extension rod is smaller than the diameter D2 of the probe ball. Specifically, the D1 is not more than D2-0.1 mm. The diameter of the extension rod can be properly reduced according to the rigidity and the length of the extension rod, so that the space avoidance amount is increased, and the extension rod is more suitable for the condition that the deep opening is narrow.

The depth position of the workpiece is accurately measured using the precision measuring apparatus of example 1, for example, the length of a certain depth position is expected to be more than 1.5mm, the width is more than 1.5mm, the depth is not more than 200mm, the diameter of the probe ball 4 is 1mm, the diameter of the extension bar 11 is 0.9mm, the length of the extension bar 11 is 205mm, and the diameter of the reference ball 31 is 1 mm. The using method comprises the following steps:

110. dividing a detection ball 4 and a reference ball 31 of the spark machine into centers, and setting the position of the detection ball 4 as a zero point to construct a three-coordinate system of the detection ball position;

120. placing the workpiece on the working table 21, so that the workpiece is located in the three-coordinate system of the position of the detection ball in step 110, and exposing the deep opening of the workpiece;

130. operating a main shaft of the spark machine to send the extension rod 11 to the deep position, moving the detection ball 31 to surfaces of the position to be detected to record a coordinate value (-75.0, -144.5, -45.0), moving the detection ball to the other surfaces, and recording a second coordinate value (-76.4, -145.3, -45.0) after the spark machine senses automatically;

140. and subtracting the second coordinate value from the th coordinate value, calculating the distance (-144.5) - (-145.3) mm to be measured as the length in the Z plane, and the distance (-75.0) - (-76.4) mm as the width.

The precision measurement method that embodiment 1 provided is through being connected detection ball and extension bar for the detection ball can stretch into the depths of deep position, and select suitable extension bar according to keeping away empty requirement, utilize the suggestion that spark machine response stopped and instruct the function of coordinate, measure the size of deep position, and replace the probe through detecting the ball, the utility model discloses a method range of application is more , just can accurately measure its coordinate and calculate the distance according to the coordinate even when narrow and dark, reduce the follow-up process and relapse through verifying the step of confirming the size, because the manufacturing cost of extension bar is lower, can replace the probe to the spark machine that the manufacturing requirement is higher, has both guaranteed the measuring precision, has reduced the requirement to equipment, and is just, adopts the utility model discloses a deviation of measurement method is steerable within 0-0.1mm, even if for the requirement of realizing keeping away empty carries out the size of extension bar, reduces the precision of extension bar etc. still can guarantee embodiment 1's measurement straightness accuracy and change the novel precision measurement method and provide the mechanical control and be applied to the precision measurement and control and improve the productivity for the mechanical production.

The diameter D1 of the extension rod is smaller than the diameter D2 of the probe ball.

The D1 is not more than D2-0.1 mm. The diameter of the extension rod can be properly reduced according to the rigidity and the length of the extension rod, so that the space avoidance amount is increased, and the extension rod is more suitable for the condition that the deep opening is narrow.

The reference ball is fixed on the reference ball seat, and the reference ball seat is adhered to the working plane. Through the position fixing of the benchmark ball, the same coordinate system can be established during each measurement, and therefore the measurement accuracy is guaranteed.

Example 2

Referring to fig. 4, in the embodiment 2, precision measuring devices for deep position are provided, and under the condition that other structures are not changed, the detecting assembly 300 used in the embodiment 2 is multiple (301, 302, 303 … …), specifically, the detecting assembly 300 respectively comprises a plurality of extension bars (111, 112, 113 … …) with different lengths and diameters and a plurality of detecting balls (201, 202, 203 … …) with different diameters, and the main shafts are respectively connected with the extension bars (111, 112, 113 … …), so that the main shafts are respectively connected with extension bars and detecting balls with different specifications and sizes to adapt to different deep positions.

Likewise, the precise measurement of different depths by the apparatus of example 2 should include the following steps:

110. dividing the detection ball 31 and the reference ball 4 of the spark machine, and setting the position of the detection ball 201 as a zero point to construct a three-coordinate system of the detection ball position;

130. operating a main shaft of the spark machine to send the extension rod 111 to the deep position, moving the detection ball 201 to surfaces of the position to be detected to record a coordinate value (X1, Y1 and Z1) and move towards the other surfaces, and recording a second coordinate value (X2, Y2 and Z2) after the spark machine senses automatically;

140. and subtracting the th coordinate value from the second coordinate value to calculate the distance to be measured, wherein Y2-Y1 is the length in the Z plane, and X2-X1 is the width.

150. Replacing the extension bar 111 with the extension bar 112 in the step 130, connecting the extension bar 112 with the detection ball 202, and repeating the steps 110 and 140 to measure the other parameters to be measured at different sizes and depths. By adopting the mode, the same working plane and the spark machine can be used for measuring workpieces with different depths, so that the calculation method of the utility model has higher universality.

The precision measurement method that embodiment 2 provided is through being connected detection ball and extension bar for the detection ball can stretch into the depths of deep position, and select suitable extension bar according to keeping away empty requirement, utilize the suggestion that spark machine response stopped and instruct the function of coordinate, measure the size of deep position, and replace the probe through detecting the ball, the utility model discloses a method range of application is more , also can accurately measure its coordinate and calculate the distance according to the coordinate even when narrow and dark promptly hole, groove etc. reduces follow-up process and relapse through verifying the step of confirming the size.

Accordingly, the present invention is not limited to the specific embodiments disclosed and described above, and certain modifications and variations to of the present invention are intended to fall within the scope of the claims of the present invention.

Claims

1, kinds of deep position precision measurement device, characterized by, include:

the spark machine also comprises a main shaft, a detection component and a reference ball, wherein the main shaft is detachably connected with the detection component, the detection component comprises a detection ball and an extension bar, the end of the extension bar is connected with the main shaft, and the other end of the extension bar is connected with the detection ball;

2. A precision measuring device according to claim 1 wherein the reference ball is fixed to a reference ball seat fixed to the work surface.

3. The precision measuring device of claim 2, wherein the reference ball seat comprises a cylindrical base fixed to the work surface and a fixing rod connected to an end of the fixing rod and fixed to the reference ball at an other end of the fixing rod.

4. The precision measuring device of claim 1, wherein the spindle and the extension bar are fixed by a connecting block.

5. The precision measuring apparatus of wherein the probe assembly is plural.

6. The precision measuring device of claim 5, wherein the probe assemblies respectively include a plurality of elongated rods of unequal lengths and diameters and a plurality of probe balls of unequal diameters, the main shafts respectively being connected to the elongated rods.

7. The precision measuring device of claim 6, wherein the diameter D1 of the elongated rod is smaller than the diameter D2 of the probe ball.

8. The precision measuring device of claim 7, wherein the D1 is not greater than D2-0.1 mm.