On lathe, draw the device of keyway
Technical field
The present invention relates to a kind of device that axle sleeve is drawn to keyway processing, the device that a kind of general frame that utilizes lathe carries out keyway processing specifically.
Background technology
Axle sleeve mainly drives by flat key when operation, and above-mentioned flat key is placed in keyway, so generally all need axle sleeve to draw keyway processing to process.At present the processing mode of keyway is mainly contained to two kinds: a kind of is the mode of upper and lower cotter joint; A kind of is the processing mode that level is drawn keyway; The mode that adopts latch is mainly the larger axle sleeve of processing internal diameter size, if bearing bore diameter size is less, is easily adding defective work piece in man-hour; It is mainly the less axle sleeve of processing internal diameter size that employing level is drawn the mode of keyway, employing level draws the equipment of keyway processing mainly to comprise that a supporting bracket, is the driving mechanism of broaching tool, the horizontal movement of a driving broaching tool, a fixed frame that entangles axle sleeve at present; Axle sleeve is enclosed within on fixed frame, and driving mechanism drives broaching tool to carry out horizontal kerve processing.
Horizontal lathe has cutting function, does not have kerve function, after axle sleeve being carried out to turning processing as while also needing kerve to process, must carry out kerve processing at kerve processing unit (plant), can not on lathe, carry out kerve processing.
Summary of the invention
The object of this invention is to provide a kind of device that draws keyway on lathe, the technical problem how solution utilizes the general frame of lathe to draw keyway.
On lathe, draw the device of keyway, comprise lathe frame, screw rod, screw drive mechanism, pull bar, broaching tool driving mechanism, broaching tool, broaching tool frame fixed support, for broaching tool frame, the broach bracket of fixation workpiece; Screw drive mechanism is fixed on lathe frame; The front end of screw rod is fixed in screw drive mechanism, the rear end of screw rod and the front end of pull bar is fixed together and on same level line, back end of tie rod is fixed on broaching tool driving mechanism front end, broaching tool driving mechanism is fixed with broaching tool on rear end, broaching tool frame fixed support is fixed on lathe frame and in broaching tool driving mechanism rear, broaching tool frame is fixed on above-mentioned broaching tool frame fixed support, and broaching tool rear end is fixed on broach bracket.
Described screw drive mechanism comprises nut body, trapezoidal nut, stop washer, round nut, flat key; Have the cavity that trapezoidal nut is installed in the middle of nut body, edge has installing hole, and nut body passes on the rotating disc that above-mentioned installing hole is fixed on lathe frame by bolt; Trapezoidal nut is fixed in nut body by flat key, and its lateral surface is provided with stop washer and round nut, in the internal cavities of above-mentioned trapezoidal nut, has internal thread, and this screw thread mates with the screw thread on screw rod.
Described broaching tool driving mechanism comprises a broaching tool frame, two torsionsprings, two jaws; The rear end of pull bar is fixed on broaching tool frame, has the torsionspring putting hole of placing torsionspring on jaw, and two torsionsprings are fixed in jaw and are fixed on broaching tool frame simultaneously, and two jaws form " " structure, and the leading portion of broaching tool is between two jaws.
On described lathe frame, also there is guide post bracing frame, guide post, guide post travelling carriage; Guide post bracing frame is fixed on lathe frame centre position, has screw rod and pass hole on it; Guide post symmetry be arranged in the horizontal both sides of screw rod, the head of guide post is fixed on guide post bracing frame; Guide post travelling carriage is fixed on guide post rear end and is also fixed on broaching tool frame simultaneously.
Described guide post travelling carriage comprises two fairleads, two guide holders, guide holder yoke plate, set bolt; Fairlead inner hollow is corresponding with guide post, and guide post is placed in this inner hollow; Guide holder is fixed on fairlead top, and guide holder yoke plate is fixed together by set bolt and guide holder.
On described guide post bracing frame and broaching tool frame fixed support, be equipped with a travel switch.
Described broach bracket comprises rocking bar, screw rod, inner sleeve, overcoat, supporting plate; Supporting plate is fixed on lathe frame, overcoat is fixed on supporting plate, inner sleeve is inner in overcoat, this inner sleeve is "T"-shaped, this inner sleeve top has the broach slot of FIG of placing broaching tool, the female screwed hole of inner sleeve bottom tool, the internal thread on this screwed hole mates and links together with screw rod, and screw rod is fixed on rocking bar.
In described, be enclosed within on the face contacting with overcoat and have a stopper slot, be enclosed within correspondence position outward and have a lock-screw, this lock-screw head is in above-mentioned stopper slot.
Described broach bracket below also has a drip tray, and this drip tray is fixed on lathe frame.
The whole across of described broaching tool frame, anterior is outstanding structure, the "T"-shaped structure in rear, has a broaching tool otch in the middle of this broaching tool frame and runs through whole broaching tool frame.
The invention has the beneficial effects as follows:
1, the present invention is arranged on the mechanism that carries out kerve on a lathe, can carry out like this turnery and can also carry out kerve work on a lathe, improves the serviceability of lathe.
2, screw drive mechanism can utilize the original rotating disc of lathe to drive screw rod horizontal movement, without increasing extra device drives screw rod horizontal movement.
3, broaching tool horizontal movement driving machine adopts torsionspring to block jaw, and jaw can very firmly be fixed broaching tool like this.
4, by increase guide post bracing frame, guide post, guide post travelling carriage on lathe; Make like this pull bar when horizontal movement, remain that the centre of motion is on same horizontal line, guarantee like this accuracy of processing.
5, corresponding with guide post by fairlead inner hollow is made, can well guarantee that like this pull bar moves by predetermined track.
6, broach bracket has inner sleeve, overcoat, and being enclosed within wherein under the effect of rocking bar can motion last time, and while using like this broaching tool frame of different size, it still can keep the horizontal movement of broaching tool.
7, because interior being enclosed within on the face contacting with overcoat has a stopper slot, lock-screw just can firmly limit the range ability of inner sleeve like this, avoids inner sleeve to put and come off from outward.
8,, by also have a drip tray below broach bracket, when carrying out kerve work, its cooling fluid just can be stored in drip tray, avoids the pollution of working environment like this.
9, by by the whole across of broaching tool frame, broaching tool frame can support sleeve like this, and the while does not hinder the kerve work of broaching tool.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that draws the device of keyway on lathe;
Fig. 2 is the device top view in Fig. 1;
The schematic diagram of Tu3Shi screw drive mechanism;
Fig. 4 is the front schematic view of nut body;
Fig. 5 is the front schematic view of trapezoidal nut;
Fig. 6 is the schematic diagram of broaching tool horizontal movement driving machine;
Fig. 7 is the top view of the broaching tool horizontal movement driving machine in Fig. 6;
Fig. 8 is the schematic diagram of jaw;
Fig. 9 is the jaw A-A longitudinal sectional view in Fig. 8;
Figure 10 is the schematic diagram of guide post travelling carriage;
Figure 11 is the front schematic view of broaching tool frame;
Figure 12 is the B-B cross-sectional schematic of broaching tool frame;
Figure 13 is the schematic diagram of broach bracket;
1. lathe frames in figure, 11. rotating discs, 2. screw rod, 3. screw drive mechanism, 31. nut bodies, 32. trapezoidal nuts, 33. stop washers, 34. round nuts, 35. flat keys, 4. pull bar, 5. broaching tool driving mechanism, 51. broaching tool framves, 52. torsionsprings, 53. jaws, 531. torsionspring putting holes, 6. broaching tool, 7. broaching tool frame fixed support, 8. broaching tool frame, 81. outstanding structures, 82. broaching tool otch, 9. broach bracket, 91. rocking bars, 92. screw rods, 93. inner sleeves, 931. stopper slot, 94. overcoats, 95. supporting plates, 96. lock-screws, 10. guiding mechanism, 101. guide post bracing frames, 102. guide post, 103. guide post travelling carriages, 1031. fairlead, 1032. guide holder, 1033. guide holder yoke plate, 20. travel switches, 30. drip trays, 40. shaft sleeve workpieces.
The specific embodiment
Please refer to Fig. 1 to Figure 13, the device that draws keyway on lathe in figure, comprises a lathe frame 1, screw rod 2, Yi Ge screw drive mechanism 3, pull bar 4, broaching tool driving mechanism 5, broaching tool 6, broaching tool frame fixed support 7, broaching tool frame 8 for fixation workpiece, broach bracket 9, a guiding mechanism 10.Wherein lathe frame 1 is for providing support to above-mentioned parts; Screw rod 2 is for driving pull bar 4 horizontal movements under the drive in screw drive mechanism 3; Thereby pull bar 4 is for driving 5 horizontal movements of broaching tool driving mechanism and then driving broaching tool 6 horizontal movements to complete kerve work; Broaching tool driving mechanism 5 is for driving broaching tool 6 horizontal movements; Broaching tool frame fixed support 7 is for supporting broaching tool frame 8, the shaft sleeve workpiece 40 of this broaching tool frame 8 for supporting broaching tool 6 and processing with kerve; Guiding mechanism 10 is for making 5 horizontal movements of broaching tool driving mechanism and then making broaching tool 6 horizontal movements.
Lathe frame 1 converts for horizontal lathe CW6140, and in the present embodiment, lathe frame 1 has mainly used its agent structure and rotating disc 11 these two parts.
Screw rod 2 length are long, on these screw rod 2 outer circumference surfaces, have external screw thread.The front end of this screw rod 2 is fixed in screw drive mechanism 3, and the front end of the rear end of screw rod 2 and pull bar 4 is fixed together and on same level line,
Screw drive mechanism 3 comprises a nut body 31, trapezoidal nut 32, stop washer 33, round nut 34, a flat key 35; In the middle of nut body 31, have the cavity that trapezoidal nut 32 is installed, edge has installing hole, and nut body 31 passes on the rotating disc 11 that above-mentioned installing hole is fixed on lathe frame 1 by bolt; Trapezoidal nut 32 is fixed in nut body 31 by flat key 35, and the lateral surface of trapezoidal nut 32 is provided with stop washer 33 and round nut 34, in above-mentioned trapezoidal nut 32 internal cavities, has internal thread, and this screw thread mates with the screw thread on screw rod 2.When the rotating disc 11 on lathe frame 1 rotates, it can drive nut body 31 rotations and then drive successively trapezoidal nut 32 rotations, and screw rod 2 just can slowly enter advance the puck like this.
Pull bar 4 is a Drag link, and its rear end is fixed on broaching tool driving mechanism 5 front ends.
Broaching tool driving mechanism 5 comprises a broaching tool frame 51, two torsionsprings 52, two jaws 53; Broaching tool frame 51 integral body are a quadra structure, and the rear end of pull bar 4 is fixed on broaching tool frame 51 framework above; Jaw 53 1 side wedge angles, a side fillet, in the middle of fillet, there is the torsionspring putting hole 531 of placing torsionspring, two torsionsprings 51 are fixed in jaw 53 and are fixed on the framework of broaching tool frame 51 simultaneously, two jaws 53 intersect formation " " structure, and the leading portion of broaching tool 6 is in being clipped between two jaws 53.
In order to make broaching tool driving mechanism 5 remain that level does not depart from former movement position in the process of motion, on lathe frame 1, also have a guiding mechanism 10, this guiding mechanism 10 comprises a guide post bracing frame 101, two guide posts 102, a guide post travelling carriage 103; Guide post bracing frame 101 is fixed on lathe frame 1 centre position, has screw rod and pass hole on it; Guide post 102 symmetries be arranged in the horizontal both sides of screw rod 2, the head of guide post 102 is fixed on guide post bracing frame 101; Guide post travelling carriage 103 is fixed on guide post 102 rear ends and is also fixed on broaching tool frame 51 simultaneously.Guide post travelling carriage 103 comprises two fairleads 1031, two guide holders 1032, guide holder yoke plate 1033, set bolt; Fairlead 1031 inner hollow are corresponding with guide post 102, and guide post 102 is placed in this inner hollow; Guide holder 1032 is fixed on fairlead 1031 tops, guide holder yoke plate 1033 is fixed together by set bolt and guide holder 1032, due to the restriction of guiding mechanism 10, broaching tool driving mechanism 5, just all the time in former horizontal line position, can not produce position skew like this.
For the distance of broaching tool driving mechanism 5 motions is controlled, on guide post bracing frame 101 and broaching tool frame fixed support 7, a travel switch 20 is all installed especially, when moving to ad-hoc location, broaching tool driving mechanism 5 just touches the trip switch 20, thus stop motion.
Broaching tool 6 is just fixed on the rear of broaching tool driving mechanism 5, and this broaching tool 6 is existing parts, has the cutting blade increasing highly gradually on it.These broaching tool 6 rear ends are fixed on broach bracket 9, make so all the time broaching tool 6 on horizontal line, avoid broaching tool 6 front and back positions not at sustained height.
Broaching tool frame fixed support 7 is a support frame structure, and it is fixed on lathe frame 1 and in broaching tool driving mechanism 5 rears, and broaching tool frame 8 is just fixed on above-mentioned broaching tool frame fixed support 7.The whole across of broaching tool frame 8, anterior is outstanding structure, and the axle sleeve of band processing kerve is just enclosed within on this raised structures 81, the "T"-shaped structure in rear, in the middle of this broaching tool frame 8, have a broaching tool otch 82 and run through whole broaching tool frame 8, broaching tool 6 is just in this position horizontal movement.
Broach bracket 9 comprises rocking bar 91, screw rod 92, inner sleeve 93, overcoat 94, supporting plate 95; Supporting plate 95 is fixed on lathe frame 1, overcoat 94 is fixed on supporting plate 95, inner sleeve 93 is in overcoat 94 inside, this inner sleeve 93 is "T"-shaped, these inner sleeve 93 tops have the broach slot of FIG of placing broaching tool 6, the female screwed hole of inner sleeve 93 bottom tool, the internal thread on this screwed hole mates and links together with screw rod 2, and screw rod 2 is fixed on rocking bar 91.At the same time, inner sleeve 93 has a stopper slot 931 on the face contacting with overcoat 94, and overcoat 94 has a lock-screw 96 at correspondence position, and these lock-screw 96 heads are in above-mentioned stopper slot 931.
Use lonely liquid carrying out kerve process need, for the ease of collecting these lonely liquid, a drip tray 30 can be installed below broach bracket 9, this drip tray 30 is fixed on lathe frame 1 equally.