CN103692427A - Flywheel excircle scribing device and scribing method - Google Patents

Abstract

The invention discloses a flywheel outer circle marking device, which comprises a workbench, a flywheel positioning mechanism, a flywheel outer circle locking mechanism, a knife setting template and a marking mechanism. The flywheel is supported on the workbench, and the positioning mechanism is connected to one end of a connecting plate. , The scoring mechanism is set on the other end of the connecting plate, the knife setting template is fixed on the upper side of the outer circle of the flywheel scoring part, and the outer circle locking mechanism of the flywheel is set on the upper and lower sides of the flywheel scoring part. The marking method of the present invention includes the following steps: 1) The center of the flywheel is positioned and fixed on the workbench, 2) the knife setting template is fixed on the marking line part of the flywheel, 3) the tip of the white steel knife is aligned with the knife setting template, 4) reverse Rotate the screw screw clockwise to complete the engraving, 5) Rotate the screw screw clockwise to complete the knife retraction. The device of the invention has the advantages of compact structure, convenient use, low manufacturing cost and high processing efficiency. The engraving method of the present invention does not need to use a machine tool, but only needs to be operated manually, which reduces the processing cost, and the multiple engraved lines are evenly distributed, thereby improving the quality of the engraved lines.

Description

Flywheel outer circle marking device and marking method

technical field

The present invention relates to a cutting process of a flywheel of a diesel engine, in particular to a special marking device and method for engraving the working top dead center line of each cylinder piston axially on the outer circumference of the flywheel, belonging to the technical field of metal parts cutting.

Background technique

The flywheel is a key moving part of the diesel engine, and its processing quality directly affects the performance and service life of the diesel engine. According to the design requirements of the diesel engine, it is necessary to engrave the working top dead center line of each cylinder piston on the outer circle of the flywheel. The width is 0.5mm, the depth is 0.5mm, and the central angle between two adjacent circles is only 0.5°. The flywheel is supported and fixed by the rotary table of the ordinary machine tool, so it is difficult to ensure that each engraved line is evenly distributed on the central axis of the flywheel, and the engraved line index of 0.5° cannot be carried out by the ordinary machine tool. The engraving operation is inconvenient, the processing cost is high, the efficiency is low, and the processing quality cannot meet the drawing requirements. the

Contents of the invention

In order to overcome the above disadvantages, the present invention provides a marking device and marking method for the outer circle of the flywheel, which can evenly mark the outer circle of the flywheel according to the graduation of 0.5° without using a machine tool.

The present invention is achieved through the following technical solutions:

A flywheel outer circle marking device, including a worktable, a flywheel positioning mechanism, a flywheel outer circle locking mechanism, a tool setting template and a marking mechanism, the inner side of the flywheel is supported on the workbench, and embedded in the through hole in the center of the flywheel and the workbench The positioning mechanism in the central positioning hole is connected to one end of the connecting plate, and the marking mechanism is arranged on the other end of the connecting plate. The outer circular locking mechanism is arranged on the upper and lower sides of the flywheel's engraved line; the flywheel positioning mechanism includes a positioning sleeve and a connecting plate, the lower end of the positioning sleeve is embedded in the upper end of the flywheel center through hole, and the upper end of the connecting plate is embedded in the lower end of the flywheel center through hole , the lower end of the connection plate is embedded in the positioning hole in the center of the workbench, the fixed bush is fixed in one end of the connection plate, one end of the connection plate is hinged to the upper end of the positioning sleeve through the fixed bush, and the upper and lower two respectively pass through the fastening of the positioning sleeve and the connection plate The center of the flywheel is fixed on the workbench by a piece; the scoring mechanism includes a screw, a screw sleeve, a pair of bearings, a white steel knife and a screw sleeve guiding mechanism, and the other end of the connecting plate extends vertically downwards out of the bearing cylinder, and the screw rod passes through One end of the connecting plate and the bearing cylinder, the middle part of the screw rod is supported in one end of the connecting plate and the bearing cylinder by a pair of bearings; the upper end of the screw rod is provided with a square handle, the lower end of the screw rod is threaded with the screw sleeve, and the white steel knife handle is fixed on the screw sleeve Inside one side, the tip of the white steel knife is aligned with the outer circle of the flywheel at the marking line; the guide mechanism of the screw sleeve is set outside the side of the screw sleeve, and the outer circle locking mechanism of the flywheel is set outside the screw sleeve and the flywheel at the marking line between circles.

The object of the present invention is further achieved through the following technical solutions.

The aforementioned flywheel outer circle marking device, wherein the screw sleeve guide mechanism includes a guide plate and a guide pin, the upper end of the guide plate is fixed on the other end surface of the connecting plate, one end of the guide pin is vertically fixedly connected to the lower end of the guide plate, and the screw sleeve The other side is provided with an axial guide groove, and the other end of the guide pin extends into the axial guide groove on the other side of the screw sleeve.

The aforementioned flywheel outer circle marking device, wherein the tool setting sample is an arc strip flat plate, the central angle α of the arc strip flat plate is an acute angle, and the radius of the inner arc of the arc strip flat plate is the same as that of the flywheel The arc radii of the bosses are equal; multiple trapezoidal teeth are evenly distributed on the outer arc of the arc-shaped flat plate, the angle between the center lines of two adjacent trapezoidal teeth is β=0.5°, and the height of the trapezoidal teeth is h=0.4～0.6mm. The alveolar angle of adjacent trapezoidal teeth γ=40°～50°. The radial reference line is engraved on the tool setting template.

The aforementioned flywheel outer circle marking device, wherein the outer circle locking mechanism of the flywheel includes a compression bolt and a locking connecting rod, the upper end of the compression bolt is threadedly connected with the other end of the connecting plate, and the lower end of the compression bolt vertically rests on the On the side of the tool setting sample plate; the locking link is hook-shaped, the upper end of the locking link is hinged to the outer side of the other end of the connecting plate, and the hook-shaped lower end of the locking link hooks the lower side of the radial edge of the flywheel scoring line.

In the aforementioned marking device for the outer circle of the flywheel, the positioning sleeve axially extends upwards out of a positioning column, and the positioning column is in clearance fit with the inner hole of the fixed bushing.

A marking method for a flywheel outer circle marking device, comprising the following steps:

1) Insert the lower end of the connection plate into the positioning hole in the center of the workbench, and then place the flywheel on the workbench so that the lower end of the center through hole of the flywheel is positioned on the upper end of the connection plate, insert a positioning sleeve into the upper end of the flywheel center through hole, and place the connection plate The fixed bushing at one end is inserted into the positioning column at the upper end of the positioning sleeve, and finally the two fastening screws are vertically passed through the upper washer, the positioning sleeve and the lower washer located inside the top plate of the workbench respectively from the upper and lower sides of the flywheel, and respectively connected with the connection plate The upper and lower ends are fixedly connected, and the center of the flywheel is fixed on the workbench;

2) Place the inner arc edge of the tool setting template against the outer circle of the flywheel boss so that the radial reference line on the tool setting plate is aligned with the top dead center line of the flywheel, and then press the pressure plate against the two ends of the tool setting template, and place the tool setting The template is fixed on the flywheel 6;

3) Loosen the compression bolt and lock nut, make the locking link into a free state, rotate the connecting plate around the center of the positioning column at the upper end of the positioning sleeve, and align the tip of the white steel knife with the two adjacent sides of the knife setting template. Alveolar center of trapezoidal teeth; Tighten the compression bolts and lock nuts respectively, the lower end of the locking link hooks the lower side of the flywheel's engraved part, and the upper and lower sides of the outer circle of the flywheel at the engraved part are fixed at the pressure position; at the same time, adjust to the horizontal The connecting plate in the state is also locked by the compression bolt and the locking link;

4) Clamp the square handle on the upper end of the screw with a wrench, and rotate the screw counterclockwise. Under the guidance of the guide pin and the axial guide groove on the other side of the screw sleeve, the screw sleeve moves vertically downward, so that the screw sleeve The tip of the white steel knife on the top moves downward to complete the engraving of a vertical line on the outer circle of the flywheel;

5) Turn the screw clockwise, and the screw sleeve drives the white steel knife to move vertically upward to complete the knife retraction;

6) Repeat steps 3) to 5) several times to complete the engraving of all vertical lines on the outer circle of the flywheel.

The marking device for the outer circle of the flywheel of the present invention has the advantages of compact structure, convenient use, good marking quality, low manufacturing cost and high processing efficiency. A plurality of trapezoidal teeth are evenly distributed on the outer arc of the tool setting template, which realizes the 0.5° indexing of the outer circle of the flywheel with the center of the flywheel as the axis. The engraving method of the present invention does not need to use a machine tool, but only needs to be operated manually, which reduces the processing cost, and the multiple engraved lines are evenly distributed, thereby improving the quality of the engraved lines.

The invention, with advantages and characteristics, will be illustrated and explained by the following non-limiting description of preferred embodiments, given by way of example only with reference to the accompanying drawings.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is an enlarged view of direction A of Fig. 1;

Fig. 3 is the front view of the tool setting template;

Fig. 4 is an enlarged view of part I of Fig. 3 .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is further described.

As shown in Figures 1 to 4, the present invention includes a workbench 1, a flywheel positioning mechanism 2, a flywheel outer circle locking mechanism 3, a knife setting template 4 and a marking mechanism 5, and the inner side of the flywheel 6 is supported on the workbench 1, embedded The flywheel positioning mechanism 2 that is contained in the flywheel center through hole 61 and the workbench center positioning hole 11 is connected with the left end of the connecting plate 7, and the marking mechanism 5 is arranged on the connecting plate 7 right ends.

The flywheel positioning mechanism 2 includes a positioning sleeve 21 and a connection plate 22. The positioning sleeve 21 and the connection plate 22 are both stepped structures. The lower end of the positioning sleeve 21 is embedded in the upper end of the flywheel center through hole 61, and the upper end of the connection plate 22 is embedded in the flywheel center through hole. In the lower end of 61, the lower end of the connecting plate 22 is embedded in the central positioning hole 11 of the workbench, the positioning sleeve 21 extends axially upwards out of the positioning column 211, and the fixed bushing 71 is fixed in the left end of the connecting plate 7 through interference fit, and the positioning column 211 Cooperate with the fixed bushing 71 inner hole gap, the left end of the connecting plate 7 is hinged with the positioning column 211 on the upper end of the positioning sleeve through the fixed bushing 21. The lower fastening screw 10 is threaded through the lower washer 20 and the connection plate 22, and the center of the flywheel 6 is fixed on the workbench 1 with the structure of locking the connection plate 22 up and down. Also available a screw rod passes through upper washer 8, positioning sleeve 21, connecting plate 22 and lower washer 20 successively from top to bottom, and the flywheel 6 center is fixed on the workbench 1 by being tightened on the nut at the screw rod lower end.

As shown in Figures 3 and 4, the tool setting template 4 is an arc strip-shaped flat plate. The central angle of the arc strip-shaped flat plate in this embodiment is α=45°. The arc radii of the bosses 62 are equal, so that the tool setting template 4 has a radial positioning reference. A plurality of trapezoidal teeth 41 are evenly distributed on the outer circular arc of the arc-shaped flat plate. The starting angle and end point angle of the trapezoidal teeth 41 of the present embodiment are 10° and 35° as shown in Figure 3, and the centerlines of two adjacent trapezoidal teeth 41 are The included angle β=0.5°, the trapezoidal tooth height h=0.5mm, and the included angle γ=45° between two adjacent trapezoidal teeth 41 . The tool setting template 4 of this embodiment processes a trapezoidal tooth 41 every 0.5° within the range of 10° to 35°. The knife setting sample 4 is processed by wire cutting to ensure the 0.5° indexing requirement of the knife setting sample 4. The tool setting sample plate 4 is engraved with the radial reference line 42 for aligning the tool setting sample plate 4 with the flywheel 6 top dead center reference. The angle of the radial reference line 42 of the present embodiment is 15° as shown in Figure 3. The two ends of the template 4 are respectively fixed on the upper side of the outer circle of the flywheel 6 by the pressing plate 43 .

Marking mechanism 5 comprises screw mandrel 51, screw sleeve 52, a pair of bearings 53, white steel knife 54 and screw sleeve guiding mechanism 55, and connecting plate 7 right-hand lower side is welded with the bearing tube 72 that links to each other vertically with connecting plate 7, and screw mandrel 51 vertically passes through the bearing cylinder at the right end of the connecting plate, and the middle part of the screw mandrel 51 is supported in the right end of the connecting plate 7 and the bearing cylinder 72 through a pair of bearings 53; The upper end of the screw mandrel 51 is provided with a square handle 511 for wrench pulling, the lower end of the screw mandrel 51 is threadedly connected with the screw sleeve 52, the handle of the white steel knife 54 is fixed in the right side of the screw sleeve 52, and the tip of the white steel knife 54 is aligned with the engraved The flywheel 6 excircle of line position.

The screw sleeve guiding mechanism 55 is arranged on the outside of the screw sleeve 52 right side, and comprises a guide plate 551 and a guide pin 552. The upper end of the guide plate 551 is fixed on the right end face of the connecting plate 7, and the screw sleeve 52 right side is provided with an axial guide groove 521, guiding The right end of the pin 552 is vertically fixedly connected to the lower end of the guide plate 551 , and the left end of the guide pin 552 extends into the axial guide groove 521 on the right side of the screw sleeve 52 . Such a structure makes when the screw mandrel 51 rotates, the screw sleeve 52 cannot rotate, but can only move up and down.

The outer circle locking mechanism 3 of the flywheel is arranged on the upper and lower sides of the scribed part of the flywheel 6, and includes a compression bolt 31 and a locking link 32. Lean against the upper side of the tool setting template 4. Locking link 32 is hook-shaped, and its upper end is hinged with connecting plate 7 right-hand side outsides, and its hook-shaped lower end laterally extends and hooks the outer circle lower side of flywheel 6 scored lines. The upper and lower sides of the radial edge of the flywheel 6 engraving positions are respectively clamped by the clamping bolt 31 and the lower end hook of the locking connecting rod 32 to facilitate the scoring, and the clamping bolt 31 is locked with the lock nut 33 .

The scoring method of the present invention comprises the following steps:

1) Embed the lower end of the connecting plate 22 in the center positioning hole 11 of the workbench, and then place the flywheel 6 on the workbench 1, so that the lower end of the flywheel central through hole 61 is positioned on the upper end of the connecting plate 22 and on the upper end of the flywheel central through hole 61 Insert the positioning sleeve 21, put the fixed bushing 71 at the right end of the connecting plate 7 on the positioning column 211 at the upper end of the positioning sleeve 21, and finally insert the upper fastening screw 9 and the lower fastening screw 10 from the upper and lower sides of the flywheel 6 vertically in turn. Pass the upper washer 8, the positioning sleeve 21 and the lower washer 10 positioned at the inner side of the top plate of the workbench, respectively fixedly connected with the upper and lower ends of the connection plate 22, and fix the center of the flywheel 6 on the workbench 1.

2) Put the inner arc edge of the tool setting template 4 against the outer circle of the flywheel boss 62, align the radial reference line 42 on the tool setting template 4 with the top dead center line of the flywheel, and then press the pressure plate 43 against the tool setting template 4 At both ends, fix the tool setting template 4 on the flywheel 6.

3) Loosen the compression bolt 31 and the lock nut 33, make the locking link 32 into a free state, rotate the connecting plate 7 around the center of the positioning column 211 on the upper end of the positioning sleeve 21, and align the tip of the white steel knife 54 with the The tooth groove centers of two adjacent trapezoidal teeth 41 of the tool setting template 4; respectively tighten the compression bolt 31 and the lock nut 33, and the lower end of the lock connecting rod 32 hooks the lower side of the flywheel scoring part, and the outer circle of the flywheel at the marking part The pressed positions of the upper and lower sides are fixed; at the same time, the connecting plate 7 adjusted to the horizontal state is also locked by the compression bolt 31 and the locking link 32 .

4) Clamp the square handle 511 on the upper end of the screw rod 51 with a wrench, rotate the screw rod 51 counterclockwise, and cooperate with the guide pin 562 and the axial guide groove 521 on the right side of the screw sleeve 52, the screw sleeve 52 moves vertically downward , so that the tip of the white steel knife 54 mounted on the screw sleeve moves downward to complete the engraving of a vertical line on the outer circle of the flywheel 6;

5) Rotate the screw rod 51 clockwise, and the screw sleeve 52 drives the white steel knife 54 to move vertically upward to complete the knife retraction.

6) Repeat steps 3) to 5) several times to complete the engraving of all vertical lines on the outer circle of flywheel 6.

In addition to the above-mentioned embodiments, the present invention can also have other implementations, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims (7)

1. A flywheel outer circle engraving device is characterized in that it includes a workbench, a flywheel positioning mechanism, a flywheel outer circle locking mechanism, a tool setting template and a line engraving mechanism, and the inner side of the flywheel is supported on the workbench, embedded in the flywheel The positioning mechanism in the central through hole and the positioning hole in the center of the worktable is connected to one end of the connecting plate. The marking mechanism is arranged on the other end of the connecting plate. On the upper side, the outer circle locking mechanism of the flywheel is arranged on the upper and lower sides of the marked line of the flywheel; the flywheel positioning mechanism includes a positioning sleeve and a connecting plate, the lower end of the positioning sleeve is embedded in the upper end of the through hole in the center of the flywheel, and the upper end of the connecting plate is embedded in In the lower end of the through hole in the center of the flywheel, the lower end of the connecting plate is embedded in the positioning hole in the center of the workbench, the fixed bushing is fixed in one end of the connecting plate, the one end of the connecting plate is hinged with the upper end of the positioning sleeve through the fixing bushing, and the upper and lower two respectively pass through the positioning sleeve The fasteners of the connection plate fix the center of the flywheel on the workbench; the scoring mechanism includes a screw, a screw sleeve, a pair of bearings, a white steel knife and a screw sleeve guide mechanism, and the other end of the connection plate extends vertically downwards out of the bearing cylinder , the screw rod passes through one end of the connecting plate and the bearing barrel vertically, the middle part of the screw rod is supported on one end of the connecting plate and the bearing barrel by a pair of bearings; The shank is fixed inside one side of the screw sleeve, and the tip of the white steel knife is aligned with the outer circle of the flywheel at the scribed part; between the outer circles of the flywheel at the engraved part. 2. The outer circle marking device of flywheel as claimed in claim 1, characterized in that, the screw sleeve guide mechanism comprises a guide plate and a guide pin, the upper end of the guide plate is fixed on the other end surface of the connecting plate, and the screw sleeve is in addition One side is provided with an axial guide groove, one end of the guide pin is vertically fixedly connected with the lower end of the guide plate, and the other end of the guide pin extends into the axial guide groove on the other side of the screw sleeve. 3. The outer circle marking device of flywheel as claimed in claim 1, characterized in that, the knife setting sample is an arc strip flat plate, the central angle α of the arc strip flat plate is an acute angle, and the arc The radius of the inner arc of the strip-shaped plate is equal to the radius of the arc of the flywheel boss; the outer arc of the arc-shaped plate is evenly distributed with multiple trapezoidal teeth, and the angle between the centerlines of two adjacent trapezoidal teeth is β=0.5°. The tooth height h=0.4～0.6mm, the alveolar angle γ=40°～50° between two adjacent trapezoidal teeth. 4 . The marking device for the outer circle of the flywheel according to claim 3 , wherein radial reference lines are engraved on the knife setting template. 4 . 5. The outer circle marking device of the flywheel according to claim 1, characterized in that, the outer circle locking mechanism of the flywheel comprises a compression bolt and a locking connecting rod, and the upper end of the compression bolt is threaded with the other end of the connecting plate. Connection, the lower end of the compression bolt is vertically against the side of the tool setting sample plate; the locking link is hook-shaped, the upper end of the locking link is hinged with the outer side of the other end of the connecting plate, and the hook-shaped lower end of the locking link hooks the flywheel. The underside of the radial edge of the line site. 6 . The marking device for the outer circle of the flywheel according to claim 1 , wherein the positioning sleeve extends axially upward from a positioning column, and the positioning column is in clearance fit with the inner hole of the fixed bushing. 7 . 7. A marking method of the flywheel outer circle marking device as claimed in claim 1, comprising the following steps: 1) Insert the lower end of the connection plate into the positioning hole in the center of the workbench, and then place the flywheel on the workbench so that the lower end of the center through hole of the flywheel is positioned on the upper end of the connection plate, insert a positioning sleeve into the upper end of the flywheel center through hole, and place the connection plate The fixed bushing at one end is inserted into the positioning column at the upper end of the positioning sleeve, and finally the two fastening screws are vertically passed through the upper washer, the positioning sleeve and the lower washer located inside the top plate of the workbench respectively from the upper and lower sides of the flywheel, and respectively connected with the connection plate The upper and lower ends are fixedly connected, and the center of the flywheel is fixed on the workbench; 2) Put the inner arc edge of the tool setting template against the outer circle of the flywheel boss, align the radial reference line on the tool setting template with the top dead center line of the flywheel, and then press the pressure plate against the two ends of the tool setting template, and place the The knife template is fixed on the flywheel 6; 3) Loosen the compression bolt and lock nut, make the locking link into a free state, rotate the connecting plate around the center of the positioning column at the upper end of the positioning sleeve, and align the tip of the white steel knife with the two adjacent sides of the knife setting template. Alveolar center of trapezoidal teeth; Tighten the compression bolts and lock nuts respectively, the lower end of the locking link hooks the lower side of the flywheel's engraved part, and the upper and lower sides of the outer circle of the flywheel at the engraved part are fixed at the pressure position; at the same time, adjust to the horizontal The connecting plate in the state is also locked by the compression bolt and the locking link; 4) Clamp the square handle on the upper end of the screw with a wrench, and rotate the screw counterclockwise. Under the guidance of the guide pin and the axial guide groove on the other side of the screw sleeve, the screw sleeve moves vertically downward, so that the screw sleeve The tip of the white steel knife on the top moves down to complete the engraving of a vertical line on the outer circle of the flywheel; 5) Turn the screw clockwise, and the screw sleeve drives the white steel knife to move vertically upward to complete the knife retraction; 6) Repeat steps 3) to 5) several times to complete the engraving of all vertical lines on the outer circle of the flywheel.

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