Examples. Comprehensive measuring method and measuring device for the manufacture of hydraulic parts of construction machinery. Such as figure 1 , figure 2 As shown, the method is to construct a comprehensive measurement device and use conventional measurement tools to complete the measurement of various construction machinery hydraulic components; the comprehensive measurement device includes a platform 1, on which there is a column, and a meter frame 5 is installed on the column. ; The column is divided into a fixed column 3 and a movable column 4, the fixed column 3 and the platform 1 are interference fit, and its position is fixed and cannot be moved. The movable column 4 can be moved on the platform 1 by the guide groove 2 and fixed with the platform 1 by a compression nut; the integrated measuring device is also equipped with a measuring rod positioning assembly 8 and a vertical positioning assembly 7 for positioning the measured parts.和Horizontal positioning component 9.
 The above-mentioned vertical positioning components such as image 3 As shown, it includes a movable column 4 with an orientation plane. The orientation plane on the column is to ensure that the conical center of the positioning axis on the meter frame 5 coincides with the center line of the lower "V"-shaped support 11 to keep the parts in the measurement. It is perpendicular to the pole plane. The column is provided with a meter frame 5 with orientation screws. Due to the orientation of the screws, the relative position of the positioning shaft and the "V"-shaped support 11 can be ensured. Other screws can be used to clamp the positioning shaft to select the positioning shaft. Fluctuating and clamping positioning. A positioning shaft with a spring is fixed on the watch frame 5, and a "V"-shaped support seat 11 fixed on the platform is provided below the vertical line of the positioning shaft; the V-type means that the contact surface of the support seat and the part is 90° It is composed of a cone hole. Because the cone has a self-centering function, after it is combined with the positioning shaft at the upper end, the position of the part during measurement can be determined. Orientation plane and orientation screws ensure that the conical center of the positioning shaft on the meter frame 5 coincides with the center line of the lower "V"-shaped support 11; there is a spring on the positioning shaft, which can apply downward pressure on the parts to eliminate the influence of human factors , To ensure the accuracy of the measured value. , It can also make the measured part rotate, which is convenient to measure the value of each point along the circumferential surface of the part.
 The aforementioned measuring rod positioning components such as Figure 4 As shown, the large-pitch upright column 16, the large-pitch upright column 16 are sequentially installed with a lower limit ring 17, a measuring rod 18, a spring 14 and an upper limit ring 20; the large-pitch upright column 16 can move along the platform 1, and the measuring rod 18 is used for measurement In the transition of time, one end of the probe is inserted into the groove of the part, and the other end is in contact with the measuring table to reflect the relative position of the groove. The measuring rod 18 can move up and down and/or rotate on the large pitch column 16. The spring 14 applies uniform pressure to the measuring rod to ensure the accuracy of the measured value; the upper limit ring 20 can adjust the pressure of the spring, and the lower limit ring 17 can limit The distance that the measuring rod moves up and down and restricts the rotation of the measuring rod on the large-pitch column 16.
 The aforementioned horizontal positioning components such as Figure 5 As shown, it includes a support rod 21 fixed on the platform. The support rod 21 is provided with a screw sleeve 22, the screw sleeve 22 is screwed with a positioning rod 23, and the positioning rod 23 is provided with a lock nut 24 to define the tested part The horizontal position. The aforementioned comprehensive measuring device also includes an improved V-shaped block 10, which corrects the parallelism of the rectangular groove on the side of the standard V-shaped block, so that the right angle of the conventional universal square can be fixed in the groove.
 The measuring device constructed in accordance with the aforementioned comprehensive measuring method for the manufacture of hydraulic parts of construction machinery, such as figure 1 with figure 2 As shown, it includes a platform 1 on which a guide groove 2 is provided; one or more fixed uprights 3 and one or more movable uprights 4 that can slide in the guide groove 2 are arranged on the platform 1; uprights There is a table frame 5 that can slide up and down. The table frame 5 is equipped with a mounting hole 6. The mounting hole 6 is perpendicular or parallel to the platform 1, and the mounting hole 6 is fixed with a conventional measuring tool or a vertical positioning component with a replaceable probe. 7; The platform 1 is also provided with a measuring rod positioning assembly 8, a horizontal positioning assembly 9 and an improved V-shaped block 10.
 The above-mentioned vertical positioning assembly 7 such as image 3 As shown, the composition includes a movable column 4 with an orientation plane fixed on the platform 1, a watch frame 5 with directional screws is provided on the movable column 4 with an orientation plane, and a strap is fixed on the watch frame 5 with directional screws. The spring positioning shaft 7 is provided with a "V"-shaped support seat 11 on the platform 1 below the spring positioning shaft 7; the spring positioning shaft 7 includes a positioning shaft 12 and a handle 13, and one end of the positioning shaft 12 is provided with a top cone 14. A spring 15 is sleeved on the positioning shaft 12, and is threadedly connected with the handle 13 through the mounting hole 6 on the meter frame 5.
 The aforementioned measuring rod positioning assembly 8 is such as Figure 4 As shown, the structure includes a large pitch column 16 fixed on the platform 1, a lower limit ring 17, a measuring rod 18 and a compression spring 19 are sleeved on the large pitch column 16, and an upper limit is sleeved on the large pitch column 16 at the upper end of the compression spring 19 The position ring 20, the lower limit ring 17 and the upper limit ring 20 are fixed on the large pitch column 16 with screws.
 The aforementioned horizontal positioning component 9 is such as Figure 5 As shown, the structure includes a support rod 21 fixed on the platform 1, a screw sleeve 22 is provided on the support rod 21, the screw sleeve 22 internally rotates the limit rod 23, and the limit rod 23 is provided with a lock nut 24.
 The aforementioned conventional measuring tools with replaceable probes refer to dial gauges or dial gauges 25, whose probes are like Figure 6 The spherical head 26 shown, such as Figure 7 As shown in the "V" type header 27 or as Figure 8 The cylindrical hole meter head 28 is shown; a conventional universal square 30 is fixed on the improved V-shaped block 10.
 The following are several typical measurement methods using the present invention for measurement:
 1. The method of measuring the swing angle of the plunger assembly, such as Picture 9 Shown.
 The conventional universal square 30 is calibrated and fixed on a standard V-shaped block 29 that has undergone parallelism correction, and the vertical side of the universal square 30 is perpendicular to the platform 1. A standard V-shaped block 29 that has been corrected for parallelism is placed on the platform 1. Put the measured plunger assembly 31 on the platform 1 so that the sliding shoe 32 is at its maximum swing angle in the natural state, and then hold the plunger assembly 31 and push it toward the measuring surface 33 of the universal square 30 to adjust the universal square 30 , Make the measurement surface parallel to the large end surface of the sliding shoe 32 (can be inspected by light). Then read the indication on the universal square 30, which is the swing angle of the plunger assembly 31.
 2. Measuring method of plunger part center distance and axial movement, such as Picture 10 Shown.
 Place the dial indicator or dial indicator 25 on the frame 5, and replace it with a "V" type head 27; correct the pointer of the dial indicator or dial indicator 25 according to the measured value of the center of the standard part and the size of the ball head position. Place the plunger assembly 31 under the "V"-shaped meter head 27 and adjust the position. Then you can read the sphere center distance of this part according to the value shown on the meter (this value must be repeatable, And relatively stable value).
 After adjusting the sphere distance measurement, remember the value shown on the dial indicator or dial indicator 25, and then hold the cylinder part of the plunger assembly 31 with your left hand, make the end face firmly adhere to the platform 1, and hold the post with your right hand The ball head 34 of the plug assembly 31 is pulled forcefully along the direction perpendicular to the platform 1, and look at the indication on the dial gauge or dial gauge 25. The difference between it and the indication at rest is the axial movement of the plunger assembly. value.
 3. The method of calculating the distance between the center of the sphere L, such as Picture 11 Shown.
 This method is used to measure the distance between the center of the sphere of the plunger rod 35 with a small plane, and has high accuracy. For specific measurement, first press Picture 11 As shown, install the dial indicator or dial indicator on the fixed column, and replace the meter head with a cylindrical hole meter head 28, and place the plunger rod 35 under the cylindrical hole meter head 28. The diameter of the cylindrical hole meter head 28 is known The inner hole radius is R', adjust the indication value of the pointer of the dial gauge or dial gauge 25, and write down the indicated value; pad the block gauge under the cylindrical hole gauge head 28, and make the dial gauge or dial gauge The indicated value of 25 should be as close as possible to the indicated value of the tested part.
 块 +L 表 =L’
 Measure the radius R of the ball nose of the plunger rod 35 with a micrometer
 Calculation: L = L , - ( R 2 - R ′ 2 )
 Where: the distance from the large end of the L plunger rod 35 to the center of the sphere
 The length from the large end face of the L'plunger rod 35 to the end face of the cylindrical bore head 28.
 4. The method of measuring the distance between the center of the ball of the long center rod, such as Picture 12 Shown. (The movable column 4 and the pitch column 16 are both movable columns, which are designed to measure parts of different sizes)
 press Picture 12 As shown, the distance and angle between the movable column 4 and the measuring rod positioning assembly 8 will be adjusted, and the standard parts will be pressed Picture 12 As shown, it is placed between the "V"-shaped support base 11 and the vertical positioning assembly 9, and the verticality of the standard part is ensured. After the actual value of the standard part is compared with the process requirement value for correction, the pointer position of the dial indicator or dial indicator 25 is adjusted. Then replace the tested part 36 and look at the indication value of the dial indicator or dial gauge 25, which is the center distance of the tested part 36. This method is comparative measurement, and the key is the adjustment and fixation of the measuring rod positioning assembly 8.
 5. The method of angularity measurement and the method of measuring the coaxiality of the inner hole to the outer circle, such as Figure 13 Shown.
 press Figure 13 As shown, the test piece 36 is placed on the standard V-shaped block 29, and the assembly 9 is positioned horizontally. Slowly rotate the tested part 36, the change of the indication value of the dial indicator or dial indicator 25 is the coaxiality of the part. This method can also measure the angularity of prismatic parts.
 The invention also has the function of a common platform: in addition to the measurement methods of some parts introduced above, the length, diameter, runout, axial clearance, swing angle, etc. of the parts can also be measured. The comprehensive measuring device constructed by the present invention can measure various parts in cooperation with other conventional measuring tools and their accessories, and has multiple functions, which not only reduces the volume of the entire measuring tool, simplifies the design and manufacturing costs, and makes the operation more humane.化. Simple operation is its biggest feature, and its intuitive display is its biggest bright spot.