CN111220047A - Compact twist drill detection device - Google Patents
Compact twist drill detection device Download PDFInfo
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- CN111220047A CN111220047A CN202010223246.0A CN202010223246A CN111220047A CN 111220047 A CN111220047 A CN 111220047A CN 202010223246 A CN202010223246 A CN 202010223246A CN 111220047 A CN111220047 A CN 111220047A
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- rotating shaft
- long arm
- twist drill
- cutting edge
- main cutting
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- 238000001514 detection method Methods 0.000 title claims abstract description 31
- 238000003754 machining Methods 0.000 abstract description 3
- 238000009966 trimming Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/243—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for measuring chamfer
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention belongs to the technical field of machining detection tools, and relates to a compact twist drill detection device, in particular to a detection tool for angles and central positions of a twist drill during trimming and grinding. The detection device comprises a main board, a V-shaped groove, a lower chute and a front rotating shaft; fixed V type groove on the mainboard for place the fluted drill of being surveyed, there is preceding pivot the mainboard front end, and preceding pivot fixed mounting is on the mainboard, and with the last surface vertical of mainboard, there is preceding pivot cap preceding pivot top, and the mainboard afterbody has lower spout, and the plane that the axle center through preceding pivot and the center of lower spout formed is this detection device's central plane, marks as central plane, and V type groove is symmetrical for the central plane, and lower spout also is symmetrical for the central plane. The detection of the twist drill is simple and convenient, and the detection method is universal and does not need to worry about the length of the twist drill to be detected.
Description
Technical Field
The invention belongs to the technical field of machining detection tools, and relates to a compact twist drill detection device.
Background
The twist drill is a common cutter in machining and is also a vulnerable tool, repeated grinding is needed in the using process, the quality of a grinding drill directly influences the punching quality and the drilling efficiency, the service life of the twist drill is also influenced, the length and the angle of one main cutting edge need to be visually observed in front for checking whether the lengths of the two main cutting edges of the twist drill are equal and whether the angles of the two main cutting edges are equal during manual grinding, the length and the angle of the other main cutting edge need to be visually observed in front, the length and the angle of the other main cutting edge are visually observed after the twist drill rotates 180 degrees, and repeated comparison is carried out because the comparison has time and space intervals, the accuracy is difficult to be maintained by the method, even if the twist drill is used for measuring, the measuring accuracy of the length of the main cutting edge is difficult. When the sharpening machine is used for sharpening, the common sharpening machine only keeps the sharpening angle proper, but does not ensure that the lengths of the two main cutting edges are equal.
Disclosure of Invention
The invention aims to provide a compact twist drill detection device, which can observe whether the lengths of two main cutting edges of a twist drill are equal and whether the angles of the two main cutting edges are equal at one time after the twist drill is placed, and can also observe whether the angles of the two main cutting edges are consistent with a preset angle, and the length of the twist drill to be detected is not limited.
The technical scheme of the invention is as follows:
a compact twist drill detection device comprises a main board, a V-shaped groove, a lower chute and a front rotating shaft;
the detection device comprises a main board, a front rotating shaft cap, a lower sliding chute, a V-shaped groove, a lower sliding chute and a detection device, wherein the main board is fixedly provided with the V-shaped groove and used for placing a twist drill to be detected, the front end of the main board is provided with the front rotating shaft, the front rotating shaft is fixedly arranged on the main board and is vertical to the upper surface of the main board, the top end of the front rotating shaft is provided with the front rotating shaft cap, the tail part of the main board is provided with the lower sliding chute, a plane formed by the axis of;
the side surface of the tail part of the main board is also provided with 4 screw holes which are respectively a screw hole A, a screw hole B, a screw hole C and a screw hole D, correspondingly, the two sides of the chute frame are provided with 4 long circular holes which are respectively a long circular hole A, a long circular hole B, a long circular hole C and a long circular hole D, and the chute frame is fixed on the main board through the 4 screw holes and the 4 long circular holes by the screws A, the screws B, the screws C and the screws D;
the upper edge of the sliding chute frame is provided with an upper sliding chute, the vertical projection of the upper sliding chute on the main board is superposed with the lower sliding chute, the near edge A and the near edge B are respectively arranged on the main board through a round hole A and a round hole C and can rotate around the front rotating shaft, the near edge A is provided with a near edge shaft, and the near edge shaft is fixedly arranged on the near edge A and is vertical to the upper surface of the near edge A;
the round hole of the long arm A is inserted on the side shaft, so that the long arm A can rotate around the side shaft, the rear rotating shaft is fixedly arranged on the long arm A and is vertical to the lower surface of the long arm A, the lower surface of the rear rotating shaft is limited by the lower chute, the upper surface of the rear rotating shaft is limited by the upper chute, namely, the rear rotating shaft can only move back and forth along the lower chute and the upper chute, the lower top of the rear rotating shaft is provided with threads, a hand-screwed nut is arranged, the long arm B is fixedly provided with a long arm B rotating shaft, the long arm B rotating shaft is vertical to the upper surface of the long arm B, and the top end of the long arm B rotating shaft;
the sliding plate is a knife-shaped plate and is provided with a knife edge, 3 cylinders are arranged on the mounting surface of the sliding plate and are respectively a cylinder A, a cylinder B and a cylinder C, wherein the top end of the cylinder A is provided with a cylinder cap A, the top end of the cylinder B is provided with a cylinder cap B, the top of the cylinder C is provided with a thread, the 3 cylinders are all vertical to the mounting surface of the sliding plate, the diameter of the cylinder A is equal to that of the cylinder C, the plane formed by the axes of the two cylinders is vertical to the knife edge, two parallel long round holes, namely a sliding plate groove A and a sliding plate groove B, are arranged on the corresponding side A, and the sliding plate is arranged on the inner side surface; cylinder A and cylinder C can slide in slide groove B, and cylinder B14 slides in slide groove A simultaneously, and the distance that leans on limit second central plane to slide medial surface constitutes by limit second thick, and the face that leans on limit first central plane to the medial surface constitutes by limit first thick, requires to lean on limit first thick and lean on limit second thick equal, and from this, when the pivot moved in last spout and lower spout after, the angle that constitutes by slide medial surface and midplane and the angle that leans on limit first medial surface and midplane constitute equal all the time.
The round hole D of the near side B is inserted into the rotating shaft of the long arm B, the near side B can rotate around the rotating shaft of the long arm B, the rear rotating shaft is inserted into the round hole B of the long arm B, the long arm B can rotate around the rear rotating shaft, the axis of the rear rotating shaft is parallel to the axis of the round hole, the distance between two axes is recorded as the center distance of the long arm A, the axis of the rotating shaft of the long arm B is parallel to the axis of the round hole B, the distance between two axes is recorded as the center distance of the long arm B, the axis of the near side shaft is parallel to the axis of the round hole A, the distance between two axes is recorded as the center distance of the near side A, a plane passing through the two axes is recorded as the center plane of the near side A, the center distance of the long arm A is equal to the center distance of the long arm B, the center distance of the near side A is equal to the center distance of the near side B, and the apertures of all round holes related to the rotating shafts are equal, the outer diameters of all the rotating shafts are equal, and the diameters of the rotating shafts are equal to the diameters of the round holes or are properly adjusted according to the roughness.
The long arm A hem perpendicular to the upper surface of long arm A, the length of long arm A hem equals the height of long arm B, and long arm A and long arm B all paste the upper surface of mainboard in the removal process promptly.
The section of the V-shaped groove is required to be symmetrical relative to the central plane, the included angle between the section of the V-shaped groove and the central plane is 45 degrees, and the bevel angle degree of the knife edge is 15 degrees.
A detection method of a compact twist drill detection device comprises the following steps:
the first step is as follows: when the twist drill is detected, the twist drill is placed in the V-shaped groove, the cross blade faces the front rotating shaft, and when the twist drill is detected, the twist drill is placed in the V-shaped groove, the cross blade faces the front rotating shaft and is parallel to the central plane;
the second step is that: setting a side A in front of a main cutting edge A, when detecting the relation between the twist drill and a preset angle, adjusting two side edges to the preset angle, then fixing a rear rotating shaft and a main board by screwing a nut with hands, after the sliding plate is close to the side A, screwing the nut with the hands on a cylinder B, thereby fixing the sliding plate on a side B, enabling the twist drill to move forwards in a V-shaped groove, keeping a cross edge parallel to a central plane until the head of the twist drill is in contact with the side A or the sliding plate, and observing the relation between the cross edge and a cutter edge at the moment, so that whether the lengths of the main cutting edge A and the main cutting edge B are equal or not can be preliminarily judged;
the third step: and observing the position relation between the main cutting edge A and the leaning edge A and the position relation between the main cutting edge B and the sliding plate, judging whether the angles of the main cutting edge A and the main cutting edge B are proper or not, and further judging whether the length of the main cutting edge A is equal to that of the main cutting edge B or not.
The fourth step: when only the main cutting edge A and the main cutting edge B of the twist drill are detected to be symmetrical, loosening the hand-screwed nut and the hand-screwed nut to enable an included angle formed by the inner side surface of the side-approaching A and the inner side surface of the sliding plate to be in an adjustable state, and enabling the included angle to be obviously smaller than an angle between the main cutting edge A and the main cutting edge B, so that the twist drill moves forwards in the V-shaped groove, and a connecting line between the chisel edge or a chisel edge turning point A and a chisel edge turning point B is kept to be parallel to the central plane until the head of the twist drill is in contact with the side-approaching A or the sliding plate;
the fifth step: continuously moving forwards, automatically adjusting the angle of the side A and the side B, moving the twist drill forwards until the side A and the side B are not adjusted, observing the position relationship between the main cutting edge A and the side A and the position relationship between the main cutting edge B and the sliding plate, and judging whether the inclination of the main cutting edge A is equal to that of the main cutting edge B;
and a sixth step: and moving the sliding plate to the central plane to enable the knife edge to contact the first side edge, if the sliding plate is blocked by the twist drill and cannot contact the first side edge, the first main cutting edge is longer than the second main cutting edge, and if the knife edge contacts the first side edge, observing the position relation between the chisel edge and the knife edge, and judging the length relation between the first main cutting edge and the second main cutting edge.
The invention has the beneficial effects that:
the twist drill is simple and convenient to detect and universal, and the length of the twist drill to be detected does not need to be worried about.
Drawings
Fig. 1 is a perspective view of the twist drill.
Fig. 2 is a perspective view of the compact twist drill detection device after assembly.
Fig. 3 is a perspective view of the compact twist drill detection device after assembly.
Fig. 4 is an exploded schematic view of the compact twist drill detection device.
Fig. 5 is an exploded schematic view of the compact twist drill detection device.
Fig. 6 is a schematic side view of the compact twist drill detection device.
In the figure: 1, a twist drill; 2, a chisel edge; 3, turning a point A with a chisel edge; 4, turning point B of the chisel edge; 5; a main cutting edge A; 6, a main cutting edge B; 101 a main board; a 102V-shaped groove; 103 lower chute; 104 a front rotating shaft; 105 front rotating shaft cap; 106 screw holes A; 107 screw holes B; 108 screw holes C; 109 screw hole D; 110 oblong holes A; 111 oblong holes B; 112 oblong holes C; 113 oblong holes D; 114, a screw A; 115 screws B; 116 a screw C; 117; a screw D; 118 an upper chute; 119 a chute frame; 120 long armed nails; 121 rear rotating shaft; 122 hand-screwing the nut; 123 circular holes; 124 folding the long arm nail; 125 a side armor; 126 round hole A; 127 by side axis; 128 side shaft caps; 129 long arm B; 130 round holes B; 131 long arm B rotating shaft; 132 long arm axle cap; 134 to the edge B; 135 circular hole C; 136 round hole D; 138 hand-screwing the nut; 139 a slide plate; 140 knife edges; 141 cylinder a; 142 cylindrical cap A; 143 cylinders B; 144 cylinders C; 145 cylindrical caps B; 146 slide plate groove A; 147 slide plate groove B; cutting a 148V-shaped groove; 170 thick near the edge B; 171 thick near the visor.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
Example 1:
as shown in fig. 2, 3, 4 and 5, a compact twist drill detection device includes a main board 101, a V-shaped groove 102, a lower chute 103 and a front rotary shaft 104;
the detection device is characterized in that a V-shaped groove 102 is fixed on the main board 101 and used for placing a twist drill 1 to be detected, a front rotating shaft 104 is arranged at the front end of the main board 101, the front rotating shaft 104 is fixedly installed on the main board 101 and is perpendicular to the upper surface of the main board 101, a front rotating shaft cap 105 is arranged at the top end of the front rotating shaft 104, a lower sliding groove 103 is arranged at the tail of the main board 101, a plane formed by the axis of the front rotating shaft 104 and the center of the lower sliding groove 103 is a central plane of the detection device and is marked as a central plane, the V-shaped groove 102 is symmetrical relative to the central plane.
The side surface of the tail of the main plate 101 is also provided with 4 screw holes which are respectively a screw hole A106, a screw hole B107, a screw hole C108 and a screw hole D109, correspondingly, two sides of the sliding groove frame 119 are provided with 4 oblong holes which are respectively an oblong hole A110, an oblong hole B111, an oblong hole C112 and an oblong hole D113, and the sliding groove frame 119 is fixed on the main plate 101 through 4 screw holes and 4 oblong holes by a screw A114, a screw B115, a screw 16 and a screw D117.
An upper chute 118 is arranged on the upper side of the chute frame 119, the vertical projection of the upper chute 118 on the main board 101 coincides with the lower chute 103, a first side support 125 and a second side support 134 are respectively installed on the main board 101 through a round hole A126 and a round hole C135 and can rotate around the front rotating shaft 104, a first side support 127 is arranged on the first side support 125, and the first side support 127 is fixedly installed on the first side support 125 and is vertical to the upper surface of the first side support 125.
The round hole 123 of the long arm A120 is inserted on the side shaft 127, so that the long arm A120 can rotate around the side shaft 127, the rear rotating shaft 121 is fixedly arranged on the long arm A120 and is vertical to the lower surface of the long arm A120, the lower surface of the rear rotating shaft 121 is limited by the lower chute 103, the upper surface of the rear rotating shaft 121 is limited by the upper chute 118, namely, the rear rotating shaft 121 can only move back and forth along the lower chute 103 and the upper chute 118, the lower top of the rear rotating shaft 121 is provided with threads, a hand screw nut 122 is arranged, the long arm B129 is fixedly provided with a long arm B rotating shaft 131, the long arm B rotating shaft 131 is vertical to the upper surface of the long arm B129, the top end of the long arm B rotating shaft 131 is provided with a long arm shaft cap 132, the round hole D136 of the side B134 is inserted on the long arm B rotating shaft 131, so that the side B134 can rotate around the long arm B rotating shaft 131, the rear rotating shaft 121 is inserted in the round hole B130 of the long arm B129, so that, the distance between the two axes is recorded as the center distance of a long arm A120, the axis of a rotating shaft 131 of a long arm B is parallel to the axis of a round hole B130, the distance between the two axes is recorded as the center distance of a long arm B129, the axis of an edge-approaching shaft 127 is parallel to the axis of a round hole A126, the distance between the two axes is recorded as the center distance of an edge-approaching shaft A125, a plane passing through the two axes is recorded as the center plane of the edge-approaching shaft A125, the axis of the round hole C135 is parallel to the axis of a round hole D136, the distance between the two axes is recorded as the center distance of an edge-approaching shaft B134, and a plane passing through the two axes is recorded as the center plane of an edge-approaching shaft B134, the center distance of the long arm A120 is equal to the center distance of the long arm B129, the center distance of the edge-approaching shaft A125 is equal to the center distance of the edge-approaching.
As shown in fig. 2, 5 and 6, the sliding plate 139 is a knife-shaped plate and has a knife edge 140, the mounting surface of the sliding plate 139 has 3 cylinders, which are a cylinder a141, a cylinder B143 and a cylinder C144, wherein the top end of the cylinder a141 has a cylinder cap a142, the top end of the cylinder B144 has a cylinder cap B145, the top of the cylinder C143 has threads, 3 cylinders are all perpendicular to the mounting surface of the sliding plate 139, the diameter of the cylinder a141 is equal to the diameter of the cylinder C144, the plane formed by the axes of the two cylinders is perpendicular to the knife edge 140, the corresponding side armor 134 has two parallel oblong holes, namely a sliding plate groove a146 and a sliding plate groove B147, and the sliding plate 139 is mounted on the inner side surface (the surface facing the sliding groove frame 119) of the side armor 134. The cylinder A141 and the cylinder C144 can slide in the sliding plate groove B147, the cylinder B143 slides in the sliding plate groove A146, the distance from the center plane of the side B134 to the inner side plane (the plane facing the sliding groove rack 119) of the sliding plate 139 forms the side B thickness 170, the distance from the center plane of the side A125 to the inner side plane (the plane facing the sliding groove rack 119) forms the side A thickness 171, the side A thickness 171 is required to be equal to the side B thickness 170, therefore, when the rear rotating shaft 121 moves in the upper sliding groove 118 and the lower sliding groove 103, the angle formed by the inner side plane and the center plane of the sliding plate 139 and the angle formed by the inner side plane and the center plane of the side A125 are always equal, and the marking 162 is overlapped with the center plane of the side A125.
The folding edge 124 of the long arm A120 is perpendicular to the upper surface of the long arm A120, the length of the folding edge 124 is equal to the height of the long arm B129, namely, the long arm A120 and the long arm B129 are attached to the upper surface of the main board 101 in the moving process, similarly, the folding edge 324 of the long arm A320 is perpendicular to the upper surface of the long arm A320, the length of the folding edge 324 is equal to the height of the long arm B329, namely, the long arm A320 and the long arm B329 are attached to the upper surface of the main board 101 in the moving process.
The V-groove cutting surface 148 is required to be symmetrical relative to the center plane, the included angle between the V-groove cutting surface 148 and the center plane is determined by the minimum angle of the main cutting edge of the twist drill 1 to be measured, and is generally appropriate to be 45 degrees, and the bevel angle degree of the knife edge 140 is determined by the maximum angle of the main cutting edge of the twist drill 1 to be measured, and is generally appropriate to be 15 degrees.
Example 2:
when the twist drill 1 is detected, the twist drill 1 is placed in the V-shaped groove 102, the chisel edge 2 faces the front rotary shaft 104, the chisel edge 2 (or a connecting line between the chisel edge rotary point A3 and the chisel edge rotary point B4) is parallel to the central plane, the front part of the main cutting edge A5 is set to be an edge-leaning A125, if the relationship between the twist drill 1 and the preset angle is detected, two edge-leaning sides are adjusted to the preset angle, then the rear rotary shaft 121 is fixed with the main plate 101 by screwing the nut 122 with hands, the sliding plate 139 is tightly leaned on the edge-A125, then the nut 138 is screwed on the cylinder 143, so that the sliding plate 139 is fixed on the edge-leaning B134, the twist drill 1 moves forwards in the V-shaped groove 102, the chisel edge 2 (or the connecting line between the chisel edge rotary point A3 and the chisel edge rotary point B4) is kept parallel to the central plane until the head of the twist drill 1 is contacted with the edge-leaning-A125 or the sliding plate 139, and the relationship between the edge 140, whether the lengths of the main cutting edge A5 and the main cutting edge B6 are equal or not can be preliminarily judged, the position relation between the main cutting edge A5 and the abutting edge A125 and the position relation between the main cutting edge B6 and the sliding plate 139 are observed, whether the angles of the main cutting edge A5 and the main cutting edge B6 are proper or not can be judged, and whether the length of the main cutting edge A5 is equal to the length of the main cutting edge B6 or not can be further judged. If only whether the main cutting edge A5 and the main cutting edge B6 of the twist drill 1 are symmetrical is detected, the nut 138 and the nut 122 are loosened, so that the included angle formed by the inner side surface of the side A125 and the inner side surface of the sliding plate 139 is in an adjustable state, the included angle is obviously smaller than the angle between the main cutting edge A5 and the main cutting edge B6, the twist drill 1 moves forwards in the V-shaped groove 102, the chisel edge 2 (or the connecting line between the chisel edge turning point A3 and the chisel edge turning point B4) is kept parallel to the central plane until the head of the twist drill 1 is in contact with the side A125 or the sliding plate 139, then the forward movement is slowly continued, the angle between the side A125 and the side B134 is automatically adjusted, the twist drill 1 moves forwards until the side A125 and the side B134 are not adjusted, the position relation between the main cutting edge A5 and the side A125 and the position relation between the main cutting edge B6 and the sliding plate 139 are observed, whether the inclination of the main cutting edge A5 is equal to that of the main cutting edge B6 or not can be judged, then the sliding plate 139 is moved to the central plane, the knife edge 140 is enabled to be in contact with the side approaching A125, if the sliding plate 139 is blocked by the twist drill 1, the side approaching A125 cannot be contacted, the main cutting edge A5 is longer than the main cutting edge B6, if the knife edge 140 is in contact with the side approaching A125, the position relation of the chisel edge 2 and the knife edge 140 is observed, and the length relation of the main cutting edge A5 and the main cutting edge B6 can be judged.
Claims (6)
1. A compact twist drill detection device is characterized by comprising a main board (101), a V-shaped groove (102), a lower sliding groove (103) and a front rotating shaft (104);
the detection device is characterized in that a V-shaped groove (102) is fixed on the main board (101) and used for placing a twist drill (1) to be detected, a front rotating shaft (104) is arranged at the front end of the main board (101), the front rotating shaft (104) is fixedly installed on the main board (101) and is perpendicular to the upper surface of the main board (101), a front rotating shaft cap (105) is arranged at the top end of the front rotating shaft (104), a lower sliding groove (103) is arranged at the tail part of the main board (101), a plane formed by the axis of the front rotating shaft (104) and the center of the lower sliding groove (103) is a central plane of the detection device and is recorded as the central plane, the V-shaped groove (102) is symmetrical relative to the central plane;
the side face of the tail of the main board (101) is also provided with 4 screw holes which are respectively a screw hole A (106), a screw hole B (107), a screw hole C (108) and a screw hole D (109), correspondingly, two sides of the sliding chute frame (119) are provided with 4 long round holes which are respectively a long round hole A (110), a long round hole B (111), a long round hole C (112) and a long round hole D (113), and the sliding chute frame (119) is fixed on the main board (101) through 4 screw holes and 4 long round holes by a screw A (114), a screw B (115), a screw C (116) and a screw D (117);
an upper chute (118) is arranged on the upper side of the chute frame (119), the vertical projection of the upper chute (118) on the main board (101) is superposed with the lower chute (103), a side A (125) and a side B (134) are respectively installed on the main board (101) through a round hole A (126) and a round hole C (135) and can rotate around a front rotating shaft (104), a side shaft (127) is arranged on the side A (125), and the side shaft (127) is fixedly installed on the side A (125) and is vertical to the upper surface of the side A (125);
the round hole (123) of the long arm A (120) is inserted on the side shaft (127), so that the long arm A (120) can rotate around the side shaft (127), the rear rotating shaft (121) is fixedly installed on the long arm A (120) and is vertical to the lower surface of the long arm A (120), the lower surface of the rear rotating shaft (121) is limited by the lower sliding chute (103), the upper surface of the rear rotating shaft is limited by the upper sliding chute (118), namely, the rear rotating shaft (121) can only move back and forth along the lower sliding chute (103) and the upper sliding chute (118), the lower top of the rear rotating shaft (121) is provided with threads, a hand-screwed nut (122) is installed, the long arm B rotating shaft (131) is fixedly installed on the long arm B (129), the long arm B rotating shaft (131) is vertical to the upper surface of the long arm B (129), and the top end of the long arm B rotating shaft (131) is provided with a;
the sliding plate (139) is a knife-shaped plate and is provided with a knife edge (140), 3 cylinders are arranged on the mounting surface of the sliding plate (139), and are respectively a cylinder A (141), a cylinder B (143) and a cylinder C (144), wherein the top end of the cylinder A (141) is provided with a cylinder cap A (142), the top end of the cylinder B (143) is provided with a cylinder cap B (145), the top of the cylinder C (144) is provided with threads, the 3 cylinders are all vertical to the mounting surface of the sliding plate (139), the diameter of the cylinder A (141) is equal to that of the cylinder C (144), a plane formed by the axes of the two cylinders is vertical to the knife edge (140), two parallel oblong holes, namely a sliding plate groove A (146) and a sliding plate groove B (147), are formed in the corresponding side-to-edge A (134), and the sliding plate (139) is mounted on the inner side surface of the side; the cylinder A (141) and the cylinder C (144) can slide in the sliding plate groove B (147), meanwhile, the cylinder B (143) slides in the sliding plate groove A (146), the distance from the central plane of the side B (134) to the inner side surface of the sliding plate (139) forms a side B thick part (170), the distance from the central plane of the side A (125) to the inner side surface forms a side A thick part (171), the side A thick part (171) and the side B thick part (170) are required to be equal, and when the rear rotating shaft (121) moves in the upper sliding groove (118) and the lower sliding groove (103), the angle formed by the inner side surface of the sliding plate (139) and the central plane is always equal to the angle formed by the inner side surface of the side A (125) and the central plane.
2. The compact twist drill detecting device according to claim 1, wherein the round hole D (136) of the side B (134) is inserted into the long arm B rotating shaft (131) so that the side B (134) can rotate around the long arm B rotating shaft (131), the rear rotating shaft (121) is inserted into the round hole B (130) of the long arm B (129) so that the long arm B (129) can rotate around the rear rotating shaft (121), the axial center of the rear rotating shaft (121) is parallel to the axial center of the round hole (123), the distance between the two axial centers is recorded as the center distance of the long arm A (120), the axial center of the long arm B rotating shaft (131) is parallel to the axial center of the round hole B (130), the distance between the two axial centers is recorded as the center distance of the long arm B (129), the axial center of the side shaft (127) is parallel to the axial center of the round hole A (126), the distance between the two axial centers is recorded as the center distance of the side A (125), and a plane passing through the two axial centers is recorded as the center plane of the side A (125), the axis of the round hole C (135) is parallel to the axis of the round hole D (136), the distance between the two axes is recorded as the center distance of the side B (134), the plane passing through the two axes is recorded as the center plane of the side B (134), the center distance of the long arm A (120) is required to be equal to the center distance of the long arm B (129), the center distance of the side A (125) is required to be equal to the center distance of the side B (134), the hole diameters of all the round holes related to the rotating shafts are equal, the outer diameters of all the rotating shafts are equal, and the hole diameters are equal to or are properly adjusted according to the roughness.
3. A compact twist drill detection device according to claim 1 or 2, wherein the long arm a fold (124) is perpendicular to the upper surface of the long arm a (120), the length of the long arm a fold (124) is equal to the height of the long arm b (129), i.e. the long arm a (120) and the long arm b (129) are both against the upper surface of the main plate (101) during movement.
4. A compact twist drill testing device according to claim 1 or 2, wherein the V-groove cut plane (148) is required to be symmetrical with respect to the centre plane, the angle between the V-groove cut plane (148) and the centre plane is 45 degrees and the angle of the knife edge (140) is 15 degrees.
5. A compact twist drill testing device according to claim 3, wherein the V-groove cut plane (148) is required to be symmetrical with respect to the centre plane, the angle between the V-groove cut plane (148) and the centre plane being 45 degrees and the angle of the bevel of the blade (140) being 15 degrees.
6. The detection method of the compact twist drill detection device according to claims 1 to 5, characterized by comprising the following steps:
the first step is as follows: when the twist drill (1) is detected, the twist drill (1) is placed in the V-shaped groove (102), the chisel edge (2) faces the front rotating shaft (104), and the chisel edge (2) is parallel to the central plane;
the second step is that: setting a side-leaning A (125) in front of a main cutting edge A (5), when detecting the relation between the twist drill (1) and a preset angle, adjusting two side-leaning sides to the preset angle, then screwing a nut (122) by hands to fix a rear rotating shaft (121) and a main plate (101), after a sliding plate (139) is tightly leaned on the side-leaning A (125), screwing a nut (138) by hands on a column B (143), so that the sliding plate (139) is fixed on a side-leaning B (134), the twist drill (1) moves forwards in a V-shaped groove (102), and a cross edge (2) is kept parallel to a central plane until the head of the twist drill (1) is contacted with the side-leaning A (125) or the sliding plate (139), and at the moment, observing the relation between the cross edge (2) and a knife edge (140), so as to preliminarily judge whether the lengths of the main cutting edge A (5) and the main cutting edge B (6) are equal or not;
the third step: observing the position relation between the main cutting edge A (5) and the side A (125) and the position relation between the main cutting edge B (6) and the sliding plate (139), judging whether the angles of the main cutting edge A (5) and the main cutting edge B (6) are proper or not, and further judging whether the length of the main cutting edge A (5) is equal to that of the main cutting edge B (6) or not;
the fourth step: when only the main cutting edge A (5) and the main cutting edge B (6) of the twist drill (1) are detected to be symmetrical, the hand nut (138) and the hand nut (122) are loosened, so that an included angle formed by the inner side surface of the side support A (125) and the inner side surface of the sliding plate (139) is in an adjustable state, the included angle is obviously smaller than the angle between the main cutting edge A (5) and the main cutting edge B (6), the twist drill (1) moves forwards in the V-shaped groove (102), and a connecting line between the chisel edge (2) or a chisel edge turning point A (3) and a chisel edge turning point B (4) is kept to be parallel to the central plane until the head of the twist drill (1) is in contact with the side support A (125) or the sliding plate (139);
the fifth step: continuously moving forwards, automatically adjusting the angle between the side A (125) and the side B (134), and observing the position relation between the main cutting edge A (5) and the side A (125) and the position relation between the main cutting edge B (6) and the sliding plate (139) when the twist drill (1) moves forwards until the side A (125) and the side B (134) are not adjusted any more, so as to judge whether the inclination of the main cutting edge A (5) is equal to that of the main cutting edge B (6);
and a sixth step: and then the sliding plate (139) is moved towards the central plane, so that the knife edge (140) is contacted with the side-approaching armor (125), if the sliding plate (139) is blocked by the twist drill (1) and can not be contacted with the side-approaching armor (125), the main cutting edge A (5) is longer than the main cutting edge B (6), if the knife edge (140) is contacted with the side-approaching armor (125), the position relation between the chisel edge (2) and the knife edge (140) is observed, and the length relation between the main cutting edge A (5) and the main cutting edge B (6) can be judged.
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