CN103111804B - Processing method of round elastic body for sensor - Google Patents

Abstract

The processing method of the circular elastic body for sensors disclosed by the present invention comprises the following steps: preparing a section of cylindrical steel rod; rough turning three sections of the outer circle of the steel rod; numerically controlled rough milling plane; numerically controlled finely milling plane; drilling; milling and pasting Chip groove; nickel plating; throw away the nickel plating layer at the patch groove. The processing method of the circular elastic body for the sensor of the present invention solves the problems of low processing quality and low processing accuracy of the existing processing method, and when milling the three-section square shape, a cushion block is installed under the stepped shaft to improve the clamping The stability and milling accuracy are greatly improved, and the service life of the tool can also be extended.

Description

Processing method of circular elastic body for sensor

technical field

The invention belongs to the technical field of elastic body processing methods for gravity sensors, and in particular relates to a processing method for circular elastic bodies for sensors.

Background technique

The elastomer is one of the essential parts of the sensor, and the processing quality of the elastomer directly affects the performance index of the sensor. At present, when milling a circle into a square shape in the processing method of a circular elastic body, the traditional method uses the dividing head to clamp to realize the flipping during the milling process. Due to the influence of the stepped shaft structure of the elastic body of the sensor, the elastic body stepped shaft will In the cantilever state, the clamping is unstable, and the milling vibration is large, resulting in square milling deformation, which seriously affects the product processing quality and precision, and reduces the service life of the tool.

Contents of the invention

The object of the present invention is to provide a processing method for a circular elastic body for a sensor, which solves the problems of low processing quality and low processing precision in the existing processing method.

The technical solution adopted in the present invention is: the processing method of the circular elastic body for the sensor, the operation steps are as follows:

The first step is to prepare a section of cylindrical steel rod;

The second step is to rough turn three sections of outer circle on the steel bar in turn, which are the first outer circle, the second outer circle and the third outer circle. After rough turning, these three sections of outer circle are finely turned. The diameter of the first outer circle is not smaller than the diameter of the second outer circle, and the diameter of the second outer circle is not smaller than the diameter of the third outer circle;

The third step is CNC rough milling plane; four planes are milled on the first outer circle, which are respectively the first plane, the second plane, the third plane and the fourth plane, and the first plane and the third plane are set opposite and parallel, The second plane and the fourth plane are set opposite and parallel; the first plane and the second plane are set perpendicularly; between two adjacent planes is a transitional arc surface; two planes are milled on the third outer circle, which are respectively the fifth plane Set opposite to the sixth plane, the fifth plane and the sixth plane;

The fourth step is CNC precision milling plane; milling four planes on the second outer circle, which are the seventh plane, the eighth plane, the ninth plane and the tenth plane, so that the second outer circle is milled into a cuboid;

The fifth step is drilling; drill four threaded bottom holes on the first plane; drill the first through hole on the fifth plane; the axis of the four threaded bottom holes is parallel to the axis of the first through hole; drill on the outer end surface The second through hole is reamed at the front end of the second through hole to form a threaded hole; the four threaded bottom holes and the threaded holes on the first outer circle are threaded, and the threaded hole in the threaded hole is cut and reversed. horn;

The sixth step is to mill the patch groove on one of the planes of the second outer circle; the plane with the patch groove milled is perpendicular to the plane with four threaded bottom holes drilled; then chamfer the edge of the patch groove;

The seventh step is to carry out nickel plating to the entire circular elastic body surface;

The eighth step is to remove the nickel plating layer at the patch groove.

The beneficial effects of the invention are: when milling a three-section square shape, a cushion block is installed under the stepped shaft to improve the clamping stability, greatly improve the milling precision, and prolong the service life of the cutter.

Description of drawings

The structural representation of three sections of outer circle in Fig. 1 step 2 of the present invention;

Fig. 2 is the structural representation of the circular elastic body that the inventive method makes;

Fig. 3 is the semi-sectional view of the circular elastic body that the inventive method makes;

Fig. 4 is the A direction view of Fig. 3;

Fig. 5 is the B direction view of Fig. 3;

Fig. 6 is a view from the direction C of Fig. 3 .

In the figure, 1 the first outer circle, 2 the second outer circle, 3 the third outer circle, 4 the first end face, 5 the second end face, 6 the first plane, 7 the second plane, 8 the third plane, 9 the fourth plane , 10 fifth plane, 11 sixth plane, 12 seventh plane, 13 eighth plane, 14 ninth plane, 15 tenth plane, 16 threaded bottom hole, 17 first through hole, 18 threaded hole, 19 patch groove , 20 second through holes.

Detailed ways

The present invention will be described in detail below in combination with specific embodiments.

The processing method of circular elastic body for sensor provided by the invention comprises the following steps:

The first step is to prepare a cylindrical steel rod with a diameter of 78mm and a length of 154mm;

The second step is to roughly turn the three sections of the outer circle of the steel bar, which are the first outer circle 1, the second outer circle 2 and the third outer circle 3, the diameters are 76mm, 46mm, 33mm, and the axial lengths are 64mm, 30mm, 60mm, and make the roughness of the first end face 4 and the second end face 5 be 3.2μm; then finish turning three sections of the outer circle, so that the diameters of the first outer circle 1, the second outer circle 2, and the third outer circle 3 They are 75mm, 45mm, and 31.5mm respectively; as shown in Figure 1, it is a schematic diagram after the second step is completed;

The third step is CNC rough milling plane; milling four planes of the same size on the first outer circle 1, with a length of 64mm and a width of 60mm, which are respectively the first plane 6, the second plane 7, the third plane 8 and the first plane Four planes 9, the first plane 6 and the third plane 8 are arranged oppositely and parallelly, the second plane 7 and the fourth plane 9 are arranged oppositely and parallelly; the first plane 6 and the second plane 7 are vertically arranged; two adjacent planes There is a transitional arc surface between them; on the third outer circle 3, two planes with the same size, 60mm in length and 25mm in width are milled, respectively the fifth plane 10 and the sixth plane 11, the fifth plane 10 and the sixth plane 11 relative settings;

The fourth step is CNC precision milling plane; four planes are milled on the second outer circle 2, which are the seventh plane 12, the eighth plane 13, the ninth plane 14 and the tenth plane 15, so that the second outer circle 2 is milled It is a cuboid, the four planes have the same size, the length is 30mm, and the width is 31.8mm;

The fifth step, drilling; drill four threaded bottom holes 16 on the first plane 6, the hole diameter is 8.4mm, and the hole depth is 19mm; drill the first through hole 17 on the fifth plane 10, the hole diameter is 10.7mm; The axis of the threaded bottom hole 16 is parallel to the axis of the first through hole 17; the second through hole 20 is drilled on the outer end face 4, the aperture is 5.5mm, and the front end of the second through hole 20 is reamed to form the threaded hole 18 Carry out threading to four threaded bottom holes 16 and threaded holes 18 on the first outer circle 1, the median diameter of the four threaded bottom holes 16 after the car threading is 10mm, the depth of the tapped hole is 16mm, and the tolerance is 6H; The middle diameter of the hole 18 is 12mm, the hole depth is 13mm, the depth of the tapping hole is 10mm, and the tolerance is 6H; the threaded hole in the threaded hole 18 is chamfered;

The sixth step is to mill the patch groove 19 on one of the planes of the second outer circle 2, so that the wall thickness of the two sides of the patch groove 19 is 4.95mm; the plane with the patch groove 19 is milled and drilled with four threaded bottom holes The plane of 16 is vertical; then chamfering the edge of patch groove 19;

The seventh step is to carry out nickel plating to the entire circular elastic body surface;

In the eighth step, the nickel plating layer at the slot 19 is removed.

The circular elastic body obtained by the above method is shown in Figures 2-6.

The processing method of the circular elastic body for the sensor of the present invention solves the problems of low processing quality and low processing accuracy of the existing processing method, and when milling the three-section square shape, a cushion block is installed under the stepped shaft to improve the clamping The stability and milling accuracy are greatly improved, and the service life of the tool can also be extended.

Claims (1)

1. the elastomeric processing method of sensor circle, it is characterized in that, operating procedure is as follows:

The first step, prepares one section of cylindrical steel rods;

Second step, rough turn three sections of cylindricals successively on rod iron, be respectively the first cylindrical (1), the second cylindrical (2) and the 3rd cylindrical (3), rough turn complete after these three sections of cylindricals of finish turning again, after car is complete, the diameter of the first cylindrical (1) is not less than the diameter of the second cylindrical (2), and the diameter of the second cylindrical (2) is not less than the diameter of the 3rd cylindrical (3);

3rd step, plane is rough milled in numerical control; In upper milling four planes of the first cylindrical (1), be respectively the first plane (6), the second plane (7), the 3rd plane (8) and the 4th plane (9), first plane (6) is relative with the 3rd plane (8) and be arranged in parallel, and the second plane (7) is relative with the 4th plane (9) and be arranged in parallel; First plane (6) is vertical with the second plane (7) to be arranged; It is transition cambered surface between adjacent two planes; In upper milling two planes of the 3rd cylindrical (3), be respectively the 5th plane (10) and the 6th plane (11), the 5th plane (10) and the 6th plane (11) are oppositely arranged;

4th step, numerical control finish-milling plane; In upper milling four planes of the second cylindrical (2), be respectively the 7th plane (12), the 8th plane (13), the 9th plane (14) and the tenth plane (15), make the second cylindrical (2) milling be a cuboid;

5th step, boring; Upper brill four thread Pilot holes (16) of the first plane (6); At upper brill first through hole (17) of the 5th plane (10); The axis of four thread Pilot holes (16) and the axis being parallel of the first through hole (17); Brill second through hole (20) on outer face (4) also carries out reaming in the front end of the second through hole (20), forms screwed hole (18); Cutting thread is carried out to four thread Pilot holes (16) on the first cylindrical (1) and screwed hole (18), and cuts the threaded bores chamfering expanded in screwed hole (18);

6th step, milling paster groove (19) in the second cylindrical (2) one of them plane; Milling has the plane of paster groove (19) and the plane orthogonal being drilled with four thread Pilot holes (16); Then to paster groove (19) chamfered edge rib chamfering;

7th step, carries out nickel plating to whole buckshot elastomeric surface;

8th step, throws the nickel coating except paster groove (19) place.