CN210321681U - Positioning tool for measuring head for measuring bore diameter of bearing inner ring by electric spark cutting - Google Patents

Abstract

The utility model discloses a location frock of electric spark cutting bearing inner race aperture measuring head, including bottom plate, locating piece, two screws and magnetism seat. The bottom plate is rectangular, and the surface of the bottom plate is provided with a rectangular positioning groove which forms an angle of 45 degrees with the two side surfaces of the bottom plate; the positioning block is a rectangular strip plate, one end face of the positioning block is a flat end face vertical to two side faces of the positioning block, and the other end face is an inclined end face forming an angle of 45 degrees with the two side faces of the positioning block; the positioning block is embedded in the positioning groove of the bottom plate, so that the flat end surface of the positioning block is positioned in the middle of the positioning groove, and the positioning block is fixed on the bottom plate through a screw; the seat body of the measuring head is also embedded in the positioning groove of the bottom plate, so that the measuring rod of the measuring head is positioned outside the bottom plate, the inner end face of the seat body is in contact with the flat end face of the positioning block, and the measuring head is fixed on the bottom plate through another screw. The utility model discloses a location frock can effectual machining efficiency and the positioning accuracy who improves bearing inner race aperture measuring head.

Description

Positioning tool for measuring head for measuring bore diameter of bearing inner ring by electric spark cutting

Technical Field

The utility model relates to a location frock of electric spark cutting bearing inner race aperture measuring head.

Background

The bearing inner ring aperture measuring head 10 before processing is composed of a seat body 11 and a measuring rod 12. The seat body 11 is a strip-shaped plate, two end faces of the seat body are oppositely provided with a U-shaped groove 110, and the measuring rod 12 is positioned on the upper surface of the center of the seat body 11 (see fig. 1). The finished measuring head is cut into two measuring heads 10' by spark molybdenum wire at 45 ° to the center line of the body 11 and through the center trajectory of the measuring head. The existing processing method of the measuring head of the bore diameter of the bearing inner ring is that the measuring head 1 is fixed on a working table top 3 of a cutting machine tool through a pressing block 2, a dial indicator 4 is adopted to make a table on the side surface of a seat body 11, the central line of the measuring head 10 is parallel to the X axis of the electrospark wire-electrode cutting machine tool (figures 2 and 3), the center of a U-shaped groove 110 of the seat body 11 is found at the opposite side by a molybdenum wire 5 through an edge-touching alarm method (two poles of the machine tool are electrified to alarm when the molybdenum wire is in contact with a workpiece), the molybdenum wire 5 is moved to the central position of the measuring head 10 according to the drawing size from the center of the U-shaped groove 110 to the center of the measuring head 10, the central position of the measuring head 10 is the starting point of the movement.

The processing method of the measuring head is tedious to position, the base surface is aligned by the dial indicator 4 every time, the molybdenum wire 5 and the center of the measuring head 10 are positioned, and because the center of the measuring head 10 only takes the drawing size as a standard, the molybdenum wire 5 is easy to deviate from the center of the measuring head 10 in a 45-degree track mode (see fig. 4).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect and provide a location frock of electric spark cutting bearing inner race aperture measuring head, its machining efficiency and positioning accuracy that can effectual improvement bearing inner race aperture measuring head.

The purpose of the utility model is realized like this: a positioning tool for an electric spark cutting bearing inner ring aperture measuring head is provided, wherein the measuring head before processing is composed of a seat body and a measuring rod; the seat body is a long strip-shaped plate, and two end faces of the seat body are oppositely provided with a U-shaped groove; the measuring rod is positioned on the central upper surface of the seat body; the positioning tool comprises a bottom plate, a positioning block, two screws and a magnetic seat; wherein the content of the first and second substances,

the bottom plate is rectangular, a rectangular positioning groove forming an angle of 45 degrees with two side surfaces of the bottom plate is formed in the surface of the bottom plate, the width of the positioning groove is in transition fit with the width of the seat body of the measuring head, and the depth of the positioning groove is equal to the thickness of the seat body; two threaded blind holes are formed in the bottom surface of the positioning groove;

the positioning block is a rectangular strip plate, one end face of the positioning block is a flat end face perpendicular to two side faces of the positioning block, and the other end face of the positioning block is an inclined end face forming an angle of 45 degrees with the two side faces of the positioning block; the width of the positioning block is excessively matched with the width of the positioning groove on the bottom plate, and the middle part of the positioning block is provided with a mounting hole matched with the threaded blind hole on the bottom plate; the positioning block is embedded in the positioning groove of the bottom plate, so that the flat end face of the positioning block is positioned in the middle of the positioning groove, and then a screw is inserted into the mounting hole of the positioning block and screwed into a threaded blind hole to fix the positioning block on the bottom plate;

the seat body of the measuring head is also embedded in the positioning groove of the bottom plate, so that the measuring rod of the measuring head is positioned outside the bottom plate, the inner end surface of the seat body is contacted with the flat end surface of the positioning block, and then another screw is inserted into the U-shaped groove of the seat body and screwed into another threaded blind hole to fix the measuring head on the bottom plate;

the magnetic seat is fixed on the wire cut electric discharge machine, the working surface of the magnetic seat is parallel to the Y axis of the wire cut electric discharge machine, and magnetic force is generated, so that the bottom surface of the bottom plate is adsorbed on the working surface of the magnetic seat.

The utility model discloses a location frock of electric spark cutting bearing inner race aperture measuring head has following characteristics: the positioning groove with an angle of 45 degrees is formed in one bottom plate, one end of the positioning groove is provided with one positioning plate, the other end of the positioning groove is provided with a measuring head before processing, the contact surface of the positioning block and the measuring head is perpendicular to the positioning groove, the processing center of the measuring head is consistent every time, the step of searching the central position of the measuring head during each processing is reduced, and the processing efficiency and the positioning precision of the bearing inner ring aperture measuring head can be effectively improved.

Drawings

FIG. 1 is a perspective view of a bearing inner race bore measurement head prior to machining;

FIG. 2 is a state diagram of a prior art manner of machining a bearing inner race bore diameter measurement head;

FIG. 3 is another state diagram of a prior art manner of machining a bearing inner race bore diameter measurement head;

FIG. 4 is a schematic structural diagram of a bearing inner race aperture measuring head formed after a machining method of the bearing inner race aperture measuring head of the prior art is adopted;

FIG. 5 is a top view of the positioning tool for measuring the bore diameter of the bearing inner race for electrospark cutting according to the present invention;

FIG. 6 is a view taken along line A-A of FIG. 5;

FIG. 7 is a state diagram of the positioning tool of the present invention for processing the measuring head for measuring the bore diameter of the bearing inner race by electric spark cutting;

FIG. 8 is a view from the B-B direction in FIG. 7;

FIG. 9 is another state diagram of the positioning tool of the present invention for processing a measuring head for measuring the bore diameter of the bearing inner race by electric spark cutting;

fig. 10 is a schematic structural diagram of the bearing inner ring aperture measuring head formed after the processing method of the bearing inner ring aperture measuring head of the present invention is adopted.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1, a measuring head 10 before processing is composed of a seat body 11 and a measuring rod 12; wherein the content of the first and second substances,

the seat body 11 is a strip-shaped plate, and two end faces of the seat body are oppositely provided with a U-shaped groove 110; the measuring stick 12 is located on the central upper surface of the seat body 11.

Referring to fig. 5 to 10, the positioning tool for measuring the bore diameter of the bearing inner race by electric spark cutting of the present invention comprises a bottom plate 20, a positioning block 30, two screws 40 and a magnetic base 50, wherein,

the bottom plate 20 is rectangular, a rectangular positioning groove 21 forming an angle of 45 degrees with two side surfaces of the bottom plate 20 is formed in the surface of the bottom plate 20, the width of the positioning groove 21 is in transition fit with the width of the seat body 11 of the measuring head 10, and the depth of the positioning groove 21 is equal to the thickness of the seat body 11; two threaded blind holes 22 are formed in the bottom surface of the positioning groove 21;

the positioning block 30 is a rectangular strip plate, one end face of the positioning block 30 is a flat end face 31 perpendicular to two side faces of the positioning block 30, and the other end face 32 of the positioning block 30 is an inclined end face forming an angle of 45 degrees with the two side faces of the positioning block 30; the width of the positioning block 30 is excessively matched with the width of the positioning groove 21 on the bottom plate 20, and the middle part of the positioning block 30 is provided with a mounting hole matched with the threaded blind hole 22 on the bottom plate 20; the positioning block 30 is embedded in the positioning groove 21 of the bottom plate 20, so that the flat end surface 31 of the positioning block 30 is positioned in the middle of the positioning groove 21, and then a screw 40 is inserted into the mounting hole of the positioning block 30 and screwed into a threaded blind hole 22 to fix the positioning block 30 on the bottom plate 20;

the seat body 11 of the measuring head 10 is also embedded in the positioning groove 21 of the bottom plate 20, the measuring rod 12 of the measuring head 10 is located outside the bottom plate 20, the inner end surface of the seat body 11 is in contact with the flat end surface 31 of the positioning block 30, and another screw 40 is inserted into the U-shaped groove 110 of the seat body 11 and screwed into another threaded blind hole 22 to fix the measuring head 10 on the bottom plate 20.

The magnetic base 50 is fixed to the wire electric discharge machine, and a magnetic force is generated by the magnetic base 50 such that the bottom surface of the base plate 20 is attracted to the working surface of the magnetic base 50, with the working surface of the magnetic base 50 being parallel to the Y axis of the wire electric discharge machine.

The utility model discloses a location frock of electric spark cutting bearing inner race aperture measuring head, the during operation will adorn bottom plate 20 of locating piece 30 and measuring head 10 and adsorb on magnetism seat 50, and magnetism seat 50 is spark-erosion wire cutting process's benchmark. Since the working surface of the magnetic base 50 is parallel to the Y-axis of the wire electric discharge machine, the side surface of the base plate 20 is parallel to the X-axis of the wire electric discharge machine, that is, the side surface of the base body 11 of the measuring head 10 is at an angle of 45 ° to the X-axis of the wire electric discharge machine. During positioning, the molybdenum wire 5 is used for the opposite side by an edge-touching alarm method, namely the molybdenum wire 5 is moved to the two sides of a measuring rod 12 of a measuring head 10 to be in contact with and alarm, the diameter of the measuring rod 12 is obtained according to the numerical value of the digital display of a machine tool, the molybdenum wire 5 can be moved to the central position of the measuring head 10, and the measuring head 10 is cut by the molybdenum wire 5 along the track parallel to the X axis of the machine tool. After cutting, the finished measuring head 10 'is obtained, the screws 40 are loosened, and the finished measuring head 10' is removed. After the measuring head 10 is clamped again, the measuring head 10 can be directly machined without positioning the center position of the measuring head 10.

The above embodiments are provided only for the purpose of illustration, not for the limitation of the present invention, and those skilled in the relevant art can make various changes or modifications without departing from the spirit and scope of the present invention, therefore, all equivalent technical solutions should also belong to the scope of the present invention, and should be defined by the claims.

Claims (1)

1. A positioning tool for an electric spark cutting bearing inner ring aperture measuring head is provided, wherein the measuring head before processing is composed of a seat body and a measuring rod; the seat body is a long strip-shaped plate, and two end faces of the seat body are oppositely provided with a U-shaped groove; the measuring rod is positioned on the central upper surface of the seat body; the positioning tool comprises a bottom plate, a positioning block, two screws and a magnetic seat; it is characterized in that the preparation method is characterized in that,

the bottom plate is rectangular, a rectangular positioning groove forming an angle of 45 degrees with two side surfaces of the bottom plate is formed in the surface of the bottom plate, the width of the positioning groove is in transition fit with the width of the seat body of the measuring head, and the depth of the positioning groove is equal to the thickness of the seat body; two threaded blind holes are formed in the bottom surface of the positioning groove;

the positioning block is a rectangular strip plate, one end face of the positioning block is a flat end face perpendicular to two side faces of the positioning block, and the other end face of the positioning block is an inclined end face forming an angle of 45 degrees with the two side faces of the positioning block; the width of the positioning block is excessively matched with the width of the positioning groove on the bottom plate, and the middle part of the positioning block is provided with a mounting hole matched with the threaded blind hole on the bottom plate; the positioning block is embedded in the positioning groove of the bottom plate, so that the flat end face of the positioning block is positioned in the middle of the positioning groove, and then a screw is inserted into the mounting hole of the positioning block and screwed into a threaded blind hole to fix the positioning block on the bottom plate;

the seat body of the measuring head is also embedded in the positioning groove of the bottom plate, so that the measuring rod of the measuring head is positioned outside the bottom plate, the inner end surface of the seat body is contacted with the flat end surface of the positioning block, and then another screw is inserted into the U-shaped groove of the seat body and screwed into another threaded blind hole to fix the measuring head on the bottom plate;

the magnetic seat is fixed on the wire cut electric discharge machine, the working surface of the magnetic seat is parallel to the Y axis of the wire cut electric discharge machine, and magnetic force is generated, so that the bottom surface of the bottom plate is adsorbed on the working surface of the magnetic seat.

Images