CN205614062U - Special lathe of high accuracy processing - Google Patents

Abstract

A special lathe for high-precision processing, including a bed, a square head tool bar, a tool bar clamping device, a jaw-type lathe center clamper, a chuck and a motor, a motor, a jaw-type lathe center clamper and a knife The rod clamping device is fixed on the bed, and the main shaft of the motor is fixedly connected with the chuck; the tool rod clamping device includes a horizontal base and a clamping tool rod mechanism, and the bottom of the base is embedded with a downward protruding base surface The positioning block, the bottom of the clamping tool bar mechanism is fixed on the base through the support seat; the clamping tool bar mechanism includes an upper splint and a lower splint arranged horizontally, the lower splint is fixed on the support seat, and the upper splint is correspondingly located on the lower splint There are four lower adjustment holes on the lower splint, two of which are located on the left side of the lower splint; in summary, the device has good stability, low defective rate, high machining accuracy, and centering precise.

Description

A special lathe for high precision machining

technical field

The utility model belongs to the field of mechanical processing equipment, in particular to a special lathe for high-precision processing.

Background technique

Lathe is the main equipment for mechanical processing. It mainly processes the surface of shaft parts and rotary processing methods such as drilling. Lathe processing has two processing forms: one is to fix the turning tool and process the formed workpiece during rotation; The first is to fix the workpiece, through the high-speed rotation of the turning tool, and the horizontal and vertical movement of the turning tool for precision machining. The lathe is mainly used for machining shafts, discs, sleeves and other workpieces with rotating surfaces. It is used in machinery manufacturing and repair factories. The most widely used type of machine tool processing; but at present, the center frame used in the processing of the long axis of ordinary lathes and small CNC lathes uses a cast iron center frame to clamp the workpiece at three points, and it needs to be manually adjusted at any time during processing to achieve long Clamping and positioning in shaft machining, the disadvantage of cast iron steady rest is that each workpiece with different diameters needs to be adjusted once, which is time-consuming and laborious, which reduces the efficiency of machining, and after manual adjustment, the centering accuracy is poor and the machining effect Difference;

In addition, deep hole inner circle processing is a major difficulty in the current processing industry, especially deep hole inner circle processing on lathes. Due to the small aperture and large aspect ratio of the processed parts, conventional tools on the lathe cannot realize deep hole machining; due to the deep hole depth, the processed tools are all super long, and the vibration of the tool cannot be avoided during the processing, and the processing stability is reduced. , it will cause damage to the workpiece, and the workpiece can only be replaced, which increases the operating cost; in addition, usually the clamping end of the tool bar is cylindrical, but there are also cases where the clamping end of the tool bar is square. The stability of the square-head tool shank is better than that of the cylindrical tool shank. At present, there is no professional tool for clamping the square-head shank. In view of the above situation, how to improve the existing lathe and provide a lathe with good processing effect , has become an urgent technical problem to be solved.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides a special lathe for high-precision processing with good stability, low defective rate and accurate centering.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: a special lathe for high-precision machining, including a bed, a square head tool bar, a tool bar clamping device, a claw-type lathe center clamper, a chuck and The motor, the motor, the jaw type lathe center clamper and the tool bar clamping device are fixed on the bed, and the main shaft of the motor is fixedly connected with the chuck;

The knife bar clamping device includes a horizontally arranged base and a clamping knife bar mechanism. The bottom of the base is embedded with a positioning block protruding downward from the lower surface of the base. The bottom of the clamping knife bar mechanism is fixed on the base through a support seat. superior;

The clamping tool bar mechanism includes an upper splint and a lower splint that are arranged horizontally. The lower splint is fixed on the support seat, and the upper splint is located directly above the lower splint. There are four lower adjustment holes on the lower splint, two of which are adjusted downwards. The holes are located on the left side of the lower splint, and the other two lower adjustment holes are located on the right side of the lower splint. There are four upper adjustment holes on the upper splint. The upper adjustment holes correspond to the lower adjustment holes. All the upper adjustment holes The shapes of the adjustment holes and the lower adjustment holes are rectangular, and the long sides of all the upper adjustment holes and the lower adjustment holes are set along the front and rear directions; each group of corresponding upper adjustment holes and lower adjustment holes are pierced with fastening bolts, The lower end of the fastening bolt passes downward through the lower adjustment hole and is threaded with a fastening nut; a clamping space is formed between the upper splint and the lower splint, and an elastic rubber layer is provided on the lower surface of the upper splint and the upper surface of the lower splint; The right end of the square-head knife rod is located in the clamping space, and the left end of the square-head knife rod is provided with a pressing screw hole and a mounting hole. The center line of the mounting hole is set horizontally along the front and rear directions. It is equipped with a blade, and the center line of the compression screw hole is set horizontally along the left and right directions. The right end of the compression screw hole communicates with the left side of the installation hole. The internal thread of the compression screw hole is connected with a compression screw, and the right end of the compression screw is pressed against the blade seat. Cooperate;

The support seat includes a connecting plate and two supporting plates fixed on the base, the two supporting plates are fixed at both ends of the connecting plate, and the upper edges of the connecting plate and the two supporting plates are fixed at the bottom of the lower splint;

The jaw type lathe center clamper includes a mounting seat, a mounting table and a claw clamping device. The mounting table is fixed on the upper surface of the mounting seat, and the claw clamping device is arranged on the front side surface of the mounting table; the claw clamping device includes push-pull Block, upper clamping arm, lower clamping arm and micro-adjustment mechanism, the vertical section of the push-pull block along the left and right direction is an isosceles trapezoid, the left side of the push-pull block is vertically arranged and the left side of the push-pull block is aligned with the right side of the push-pull block The surfaces are parallel, the area of the left side of the push-pull block is smaller than the area of the right side of the push-pull block, the rear side of the push-pull block is fixed with a guide rail along the horizontal direction, and the front side surface of the mounting table is provided with a dovetail groove along the horizontal direction, and the push-pull block passes through The guide rail is inserted in the dovetail groove and slidably connected to the front side of the installation table; the upper side of the push-pull block is provided with an upper slide rail, and the lower side of the push-pull block is provided with a lower rail; the push-pull block is provided with a guide through hole along the center line of the push-pull block , the micro-adjustment mechanism extends from right to left and passes through the guide through hole. The left end of the micro-adjustment mechanism protrudes from the left side of the push-pull block; the right side of the push-pull block is fixed with two pull rods along the left and right horizontal directions. The pull rods are set up and down side by side. A push-pull handle is fixed between the right ends of the two pull rods. A connecting rod is fixed between the two pull rods. Two compression springs are arranged side by side between the plates, and the two compression springs are parallel to the pull rods;

The upper clamping arm and the lower clamping arm have the same structure, the upper clamping arm is located directly above the lower clamping arm and the upper clamping arm and the lower clamping arm are arranged symmetrically about the center line of the push-pull block; the upper clamping arm is provided with The upper pin hole, the upper pin shaft is fixed on the left side of the front side surface of the installation table, the upper pin shaft is located above the push-pull block, and the upper clamping arm is hinged on the front side of the installation table through the upper pin shaft through the upper pin hole; The left end of the holding arm is rotatably connected with a first rolling bearing, the right end of the upper clamping arm is rotatably connected with an upper roller, and a first tension spring is arranged between the upper clamp arm and the installation platform, and the first tension spring and the upper clamp arm The joint is located between the upper pin shaft and the upper roller; under the action of the first tension spring, the upper roller is rollingly connected to the upper slide rail;

There is a lower pin hole on the lower clamping arm, and the lower pin shaft is fixed on the left side of the front surface of the installation platform. The lower pin shaft is located under the push-pull block. The front side of the table; the left end of the lower clamping arm is rotatably connected with a second rolling bearing, the right end of the lower clamping arm is rotatably connected with a lower roller, and a second tension spring is arranged between the right end of the lower clamping arm and the installation platform. The connection between the second tension spring and the lower clamping arm is located between the lower pin shaft and the lower roller, and under the action of the second tension spring, the lower roller is rollingly connected to the lower rail.

The micro-adjustment mechanism includes a support tube and a screw rod. The support tube is installed in the guide through hole and the outer wall of the support tube is slidingly matched with the inner wall of the guide through hole. The inner wall of the guide through hole is provided with guide grooves along the left and right directions. The guide block in the groove, the left end of the support tube protrudes from the guide through hole and protrudes from the left side of the installation platform, the left end of the support tube is rotatably connected with the second rolling bearing, and the screw extends into the support tube from right to left along the guide through hole , the screw is threadedly connected with the support pipe, the right end of the screw is located outside the guide through hole, the right end of the screw is provided with an adjustment handle, the right part of the screw is connected in the guide through hole through a thrust bearing, and the right end of the push-pull block is provided with the right end of the guide through hole Plug and position the bearing glands of the thrust bearings.

By adopting the above technical scheme, the utility model has the following beneficial effects:

(1) The cutter bar clamping device of the utility model can hold square-head cutter rods of different sizes. According to the thickness of the square-head cutter rod, the distance between the upper splint and the lower splint can be adjusted appropriately, and then according to the square-head cutter rod Adjust the position of the fastening bolt in the upper adjustment hole and the lower adjustment hole, then extend the square-head knife rod into the clamping space, tighten all the fastening nuts, and then the square-head knife rod can be firmly clamped;

(2) The lower surface of the upper splint and the upper surface of the lower splint are provided with an elastic rubber layer, which slows down the vibration of the square head cutter bar when processing deep holes;

(3) There is a compression screw and a mounting hole at the left end of the square head cutter bar. The opening of the mounting hole faces forward and a blade holder is installed in the installation hole. The blade is installed in the blade holder. The compression screw is threaded from left to right The left end of the square-head cutter bar and the compression screw are press fit with the blade seat. When the blade is damaged, just loosen the compression screw and take out and replace the blade. It is convenient to replace the blade;

(4) The claw-type lathe center clamper of the utility model can accurately center and clamp workpieces with different diameters. The specific clamping operation is: first pull the push-pull handle to the right, and then pull the push-pull handle through two pull rods to pull the push-pull block. Make the push-pull block move to the right along the dovetail groove on the installation platform, under the action of the first tension spring and the second tension spring, the upper roller at the right end of the upper clamping arm rolls to the left and lower along the upper slide rail, and the lower clamping arm The lower roller at the right end of the arm rolls upwards to the left along the lower rail. Since the upper clamping arm and the lower clamping arm are respectively hinged on the installation platform through the upper pin shaft and the lower pin shaft, it can be seen from the principle of leverage that the right end of the upper clamping arm goes downward. movement, the left end of the upper clamping arm moves upwards, the same right end of the lower clamping arm moves upwards, and the left end of the lower clamping arm moves downwards, then the distance between the upper clamping arm and the lower clamping arm becomes larger, and the clamping space is opened (the clamping space mentioned is the space between the upper clamping arm and the lower clamping arm), then place the workpiece between the upper clamping arm and the lower clamping arm, then push the push-pull handle to the left, push-pull The block moves to the left along the dovetail groove. Contrary to before, the upper roller at the right end of the upper clamping arm rolls to the upper right along the upper slide rail, and the lower roller at the right end of the lower clamping arm rolls to the lower right along the lower rail, so the upper clamping arm The distance between the left end and the lower clamping arm becomes smaller until the first rolling bearing of the upper clamping arm and the second rolling bearing of the lower clamping arm press against the surface of the workpiece, then stop pushing the push-pull handle; The position of the rolling bearing makes the third rolling bearing also press against the surface of the workpiece. The specific adjustment process is: the screw rotates in the support tube by rotating the adjustment handle. Since the support tube slides and cooperates with the inner wall of the guide through hole, the gap between the support tube and the screw It is a threaded connection, so the support tube moves to the left under the rotation of the screw rod. When the third rolling bearing at the left end of the support tube presses against the workpiece, stop rotating the adjusting handle. At this time, the first rolling bearing, the second rolling bearing and the third rolling bearing are at the same time Clamped on the outer surface of the workpiece, due to the special position of the three rolling bearings, the center line of the workpiece must be on the horizontal plane, the workpiece will not tilt, the centering is accurate, and the operation is simple;

(5) Two compression springs are arranged side by side between the connecting rod and the fixed plate. The compression springs make the push-pull block receive a continuous force to the left, so that the upper clamping arm and the lower clamping arm are always in a clamping state, that is, when The workpiece is located in the clamping space. Due to the force of the compression spring, the two second rolling bearings can be pressed against the outer surface of the workpiece;

(6) Between the right end of the upper clamping arm and the installation platform, and between the right end of the lower clamping arm and the installation platform, there are a first tension spring and a second tension spring, and the first tension spring and the second The significance of the tension spring is to enable the roller to press and roll on the upper rail and the lower rail;

(7) The right part of the screw is rotatably connected in the guide through hole through the thrust bearing, and the right side of the push-pull block is provided with a bearing gland that blocks the right end of the guide through hole and positions the thrust bearing.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the tool bar clamping device;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the right view of Fig. 2;

Fig. 5 Schematic diagram of the structure of the center gripper of the jaw type lathe.

detailed description

As shown in Figure 1, a special lathe for high-precision processing of the present utility model includes a bed 50, a square head tool bar 32, a tool bar clamping device, a claw-type lathe center clamper 51, a chuck 52 and Motor 53, motor 53, jaw type lathe center clamper 51 and tool bar clamping device are fixed on the bed 50, and the main shaft of motor 53 is fixedly connected with chuck 52;

As shown in Figure 5, the claw-type lathe center clamper includes a mounting base 1, a mounting table 2, and a jaw clamping device. The mounting base 2 is fixed on the upper surface of the mounting base 1, and the jaw clamping device is arranged on the mounting base. 2 the front side surface; the claw clamping device includes a push-pull block 3, an upper clamp arm 4, a lower clamp arm 5 and a micro-adjustment mechanism, the vertical section of the push-pull block 3 along the left and right direction is an isosceles trapezoid, and the left The sides are vertically arranged and the left side of the push-pull block 3 is parallel to the right side of the push-pull block 3, the area of the left side of the push-pull block 3 is less than the area of the right side of the push-pull block 3, and the upper edge of the rear side of the push-pull block 3 The guide rail is fixed in the horizontal direction, and the front surface of the installation platform 2 is provided with a dovetail groove along the horizontal direction. rear side, and the sliding connection between the guide rail and the dovetail groove is the prior art, not shown in the figure); the upper side of the push-pull block 3 is provided with an upper slide rail 6, and the lower side of the push-pull block 3 is provided with a lower rail 7; the push-pull block 3 There is a guide through hole 8 along the center line of the push-pull block 3, and the micro-adjustment mechanism extends from right to left and passes through the guide through-hole 8. The left end of the micro-adjustment mechanism protrudes from the left side of the push-pull block 3; the push-pull block The right side of 3 is fixed with two pull rods 9 along the left and right horizontal directions, and the two pull rods 9 are arranged side by side correspondingly up and down, and a push-pull handle 10 is fixed between the right ends of the two pull rods 9, and a connecting rod 11 is fixed between the two pull rods 9 , the front side of the mounting table 2 is provided with a fixed plate 12 between the connecting rod 11 and the push-pull handle 10, and two compression springs 13 are arranged side by side between the connecting rod 11 and the fixed plate 12, and the two compression springs 13 are all connected to the pull rod 9 parallel;

The upper clamping arm 4 and the lower clamping arm 5 have the same structure, the upper clamping arm 4 is located directly above the lower clamping arm 5 and the upper clamping arm 4 and the lower clamping arm 5 are arranged symmetrically about the center line of the push-pull block 3; The upper clamping arm 4 is provided with an upper pin hole, and the upper pin shaft 14 is fixed on the left side of the front surface of the mounting table 2. The upper pin shaft 14 is located above the push-pull block 3, and the upper clamping arm 4 passes through the upper pin shaft 14. It is hinged on the front side of the mounting table 2 in the upper pin hole; the left end of the upper clamping arm 4 is rotatably connected with a first rolling bearing 15, and the right end of the upper clamping arm 4 is rotatably connected with an upper roller 16, and the right end of the upper clamping arm 4 A first extension spring 17 is arranged between the mounting table 2, and the connection between the first extension spring 17 and the upper clamping arm 4 is located between the upper pin shaft 14 and the upper roller 16; Under the action, the upper roller 16 is rollingly connected to the upper slide rail 6;

The lower clamping arm 5 is provided with a lower pin hole, and the left side of the front surface of the mounting table 2 is fixed with a lower pin shaft 23. The lower pin shaft 23 is located below the push-pull block 3, and the lower clamping arm 5 passes through the lower pin shaft 23. In the lower pin hole, it is hinged with the mounting platform 2; the left end of the lower clamping arm 5 is rotatably connected with a second rolling bearing 24, and the right end of the lower clamping arm 5 is rotatably connected with a lower roller 25, and the right end of the lower clamping arm 5 is connected with the mounting platform. 2 is provided with a second tension spring 26, and the connection between the second tension spring 26 and the lower clamping arm 5 is located between the lower pin shaft 23 and the lower roller 25; under the action of the second tension spring 26, The lower roller 25 is rollingly connected on the lower rail 7.

The micro-adjustment mechanism includes a support tube 18 and a screw rod 19. The support tube 18 is passed through the guide through hole 8 and the support tube 18 is slidably matched with the inner wall of the guide through hole 8. The inner wall of the guide through hole 8 is provided with a guide groove 27 along the left and right direction. The outer wall of the support tube 18 is provided with a guide block 28 located in the guide groove 27. The left end of the support tube 18 protrudes from the guide through hole 8 and protrudes from the left side of the installation platform 2. The left end of the support tube 18 is rotatably connected with a third rolling bearing 20. , the screw rod 19 stretches into the support pipe 18 from right to left along the guide through hole 8, the screw rod 19 is threadedly connected with the support pipe 18, the right end of the screw rod 19 is located outside the guide through hole 8, and the right end of the screw rod 19 is provided with an adjustment handle 21, The right part of the screw rod 19 is rotatably connected in the guide through hole 8 through the thrust bearing 29, and the right side of the push-pull block 3 is provided with a bearing gland 30 that blocks the right end of the guide through hole 8 and positions the thrust bearing 29.

As shown in Figures 2-4, the tool bar clamping device includes a horizontally arranged base 31 and a clamping tool bar mechanism. The bottom of the base 31 is embedded with a positioning block 33 protruding downward from the lower surface of the base 31. The knife bar mechanism is fixed on the base 31 through the support seat;

The clamping tool bar mechanism includes an upper splint 34 and a lower splint 35 arranged horizontally, the lower splint 35 is fixed on the support seat, the upper splint 34 is correspondingly located directly above the lower splint 35, and the lower splint 35 is provided with four lower adjustment holes (The lower adjusting holes are blocked by the upper clamping plate 34 in Fig. 2, not shown), wherein two lower adjusting holes are located on the left side of the lower clamping plate 35, and the other two lower adjusting holes are located on the right side of the lower clamping plate 35, on the upper clamping plate 34 There are four upper adjustment holes 37, and the upper adjustment holes 37 and the lower adjustment holes are arranged one by one. All the upper adjustment holes 37 and the lower adjustment holes are rectangular in shape, and all the upper adjustment holes 37 and the lower adjustment holes The long sides of the long sides are all set along the front and back directions; each set of upper and lower corresponding upper adjustment holes 37 and lower adjustment holes are perforated with fastening bolts 38, and the lower ends of the fastening bolts 38 are threaded downwards through the lower adjustment holes. Clamping nut 39; Clamping space 40 is formed between the upper clamping plate 34 and the lower clamping plate 35; The right end of the square head knife bar 32 is located in the clamping space 40, and the left end of the square head knife bar 32 is provided with a compression screw hole 41 and an installation Hole 42, the center line of mounting hole 42 is arranged horizontally along the front-to-back direction, and blade seat 43 is equipped with in the mounting hole 42, and blade seat 43 front end is equipped with blade 44, and the center line of pressing screw hole 41 is horizontally arranged along left-right direction, compresses The right end of the screw hole 41 communicates with the left side of the mounting hole 42 , and the internal thread of the screw hole 41 is connected with a compression screw 45 , and the right end of the compression screw 45 is press-fitted with the blade holder 43 .

The support base includes a connecting plate 46 and two supporting plates 47 fixed on the base 31, the two supporting plates 47 are fixed at both ends of the connecting plate 46, and the upper side edges of the connecting plate 46 and the two supporting plates 47 are all fixed on the bottom. The bottom of the splint 35.

Both the lower surface of the upper clamping plate 34 and the upper surface of the lower clamping plate 35 are provided with an elastic rubber layer 48 .

The specific working process of this device when implementing the operation is as follows:

(1) First, fix the right end of the square-head cutter bar 32 in the clamping space 40: manually adjust the positions of all fastening bolts 38 according to the size of the square-head cutter bar 32, and then extend the right side of the square-head cutter bar 32 Enter the clamping space 40, tighten all the fastening nuts 39 and screw them on the corresponding fastening bolts 38. At this time, the fastening nuts 39 are tightly matched with the lower splint 35, and the square head tool bar 32 is firmly clamped between the upper clamping plate 34 and the lower clamping plate 35;

(2) Then, one end of the workpiece 54 is inserted into the center clamper 51 of the jaw type lathe, and the other end of the workpiece 54 is clamped on the chuck 52, and then the base 31 is fixed on the On lathe 22, at the same time, one end equipped with blade 44 of square head tool bar 32 stretches in the workpiece 54, and the main shaft of motor 53 is connected with workpiece 54 through the transmission of workpiece chuck 52, starts motor 53, and then motor 53 drives workpiece 54 to rotate, The blade 44 on the square head tool bar 32 carries out deep hole machining to the workpiece 54;

The operation method for stably clamping the workpiece 54 on the center clamper 51 of the jaw type lathe is: the mounting seat 1 is fixed on the bed 50 by fastening bolts, assuming that the direction facing the viewer in Fig. 5 is the front , then the workpiece 54 passes through the device from back to front; the specific operation of clamping the workpiece 54 on the device is: first pull the push-pull handle 10 to the right, and then the push-pull handle 10 pulls the push-pull block 3 through two pull rods 9, so that The push-pull block 3 moves to the right along the dovetail groove on the mounting table 2, and under the action of the first tension spring 17 and the second tension spring 26, the upper roller 16 at the right end of the upper clamping arm 4 moves down to the left along the upper slide rail 6 The lower roller 25 at the right end of the lower clamping arm 5 rolls upwards to the left along the lower rail 7. Since the upper clamping arm 4 and the lower clamping arm 5 are hinged on the mounting pin 14 and the second pin 23 respectively On platform 2, it can be seen from the lever principle that the right end of the upper clamping arm 4 moves downward, and the left end of the upper clamping arm 4 moves upward. Similarly, the right end of the lower clamping arm 5 moves upward, and the left end of the lower clamping arm 5 moves downward. Then the distance between the upper clamping arm 4 and the lower clamping arm 5 becomes larger, and the clamping space is opened (the clamping space is the space between the upper clamping arm 4 and the lower clamping arm 5), and then Place the workpiece 54 between the upper clamping arm 4 and the lower clamping arm 5, then push the push-pull handle 10 to the left, and the push-pull block 3 moves to the left along the dovetail groove. Contrary to before, the upper roller on the right end of the upper clamping arm 4 16 rolls to the upper right along the upper slide rail 6, and the lower roller 25 at the right end of the lower clamping arm 5 rolls to the lower right along the lower rail 7, so the distance between the left end of the upper clamping arm 4 and the lower clamping arm 5 becomes smaller, After the first rolling bearing 15 and the second rolling bearing 24 are pressed against the surface of the workpiece 54, stop pushing the push-pull handle 10; then perform micro-adjustment of the position of the third rolling bearing 20 so that the third rolling bearing 20 is also pressed against the surface of the workpiece 54, specifically The adjustment process is: the screw rod 19 is rotated in the support tube 18 by rotating the adjustment handle 21. Since the support tube 18 is slidingly matched with the inner wall of the guide through hole 8, the support tube 18 and the screw rod 19 are threaded, so the support tube 18 Under the rotation promotion of screw rod 19, move to the left, when the third rolling bearing 20 on the left end of support pipe 18 presses against workpiece 54, stop rotating adjustment handle 21, now the first rolling bearing 15, the second rolling bearing 24 and the third rolling bearing 20 Clamped on the workpiece 54 outer surface simultaneously, due to the special position of three rolling bearings, so the center line of workpiece 54 must be positioned on the horizontal plane, workpiece 54 can not be inclined, can carry out operation to workpiece next. .

This embodiment does not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model belong to the technology of the utility model. protection scope of the program.

Claims (2)

1. the special purpose lathe of a high accuracy processing, it is characterized in that: include lathe bed, square toes knife bar, knife bar clamping device, jack catchs type turning center clamper, chuck and motor, motor, jack catchs type turning center clamper and knife bar clamping device are fixed on lathe bed, and the main shaft of motor is fixing with chuck to be connected；

Knife bar clamping device includes horizontally disposed pedestal and clamping knife bar mechanism, and base bottom is embedded with the locating piece of downwardly projecting pedestal lower surface, and bottom clamping knife bar mechanism, by supporting, seat is fixing to be located on pedestal；

Clamping knife bar mechanism includes all horizontally disposed train wheel bridge and lower plate, lower plate is fixed on support seat, train wheel bridge correspondence is positioned at the surface of lower plate, lower plate is provided with four lower adjustment holes, under two of which, adjustment hole is positioned at the left side of lower plate, two other lower adjustment hole is positioned at the right side of lower plate, train wheel bridge is provided with four adjustment apertures, adjustment apertures is arranged with the upper and lower one_to_one corresponding of lower adjustment hole, the external form of all of adjustment apertures and lower adjustment hole is rectangle, and the long limit of all of adjustment apertures and lower adjustment hole is all arranged along the longitudinal direction；All being equipped with fastening bolt in often organizing corresponding adjustment apertures and lower adjustment hole, the lower end of fastening bolt is passed down through lower adjustment hole rear thread and is connected with clamp nut；Forming grasping part between train wheel bridge and lower plate, the lower surface of train wheel bridge and the upper surface of lower plate are equipped with elastic rubber layer；Square toes knife bar right part is positioned at grasping part, square toes knife bar left part is provided with compression screw and installing hole, the center line of installing hole is horizontally disposed with along the longitudinal direction, it is equipped with blade bearing in installing hole, blade bearing front end is equipped with blade, and the center line compressing screw is horizontally disposed with in left-right direction, compresses screw right-hand member and connects with on the left of installing hole, compress screw internal thread and be connected with housing screw, housing screw right-hand member and the press-fit of blade bearing top；

Supporting seat and including one piece of connecting plate being fixed on pedestal and two pieces of gripper shoes, two pieces of gripper shoes are fixed on connecting plate two ends, and the upper side edge of connecting plate and two pieces of gripper shoes is along the bottom being each attached to lower plate；

Jack catchs type turning center clamper includes mounting seat, erecting bed and claw clamping device, and erecting bed is fixed on mounting seat upper surface, and claw clamping device is arranged on erecting bed front side surface；Claw clamping device includes push-and-pull block, upper clamping limb, lower clamping limb and micro-adjusting mechanism, push-and-pull block vertical cross-section in left-right direction is isosceles trapezoid, the left surface of push-and-pull block is vertically arranged and the left surface of push-and-pull block is parallel with the right flank of push-and-pull block, the area of the left surface of push-and-pull block is less than the area of the right flank of push-and-pull block, it is fixed with guide rail in the horizontal direction on the trailing flank of push-and-pull block, erecting bed front side surface offers dovetail groove in the horizontal direction, and push-and-pull block is slidably connected on front side of erecting bed in being plugged in dovetail groove by guide rail；The upper side of push-and-pull block is provided with slide rail, and the downside of push-and-pull block is provided with glidepath；In push-and-pull block, the center line direction along push-and-pull block offers guide through hole, and micro-adjusting mechanism right-to-left is extended through guide through hole, and the left part of micro-adjusting mechanism protrudes from push-and-pull block left surface；The right flank of push-and-pull block is fixed with two pull bars along left and right horizontal direction, two pull bars are side by side up and down to be correspondingly arranged, it is fixed with drawing handle between the right-hand member of two pull bars, it is fixed with connecting rod between two pull bars, erecting bed leading flank is provided with the fixed plate being positioned between connecting rod and drawing handle, being provided with two compression springs between connecting rod and fixed plate side by side, two compression springs are all parallel with pull bar；

Upper clamping limb is identical with the structure of lower clamping limb, and upper clamping limb is positioned at the surface of lower clamping limb and upper clamping limb and lower clamping limb is symmetrical arranged with regard to the center line of push-and-pull block；Upper clamping limb is provided with pin-and-hole, and erecting bed front side surface left side is fixed with upper pin, and upper pin is positioned above push-and-pull block, and upper clamping limb is hinged on erecting bed leading flank in being located in upper pin-and-hole by upper pin；The left end of upper clamping limb is rotatably connected to the first rolling bearing, and the right-hand member of upper clamping limb is rotatably connected to upper roller, is provided with the first stretching spring between upper clamping limb and erecting bed, and the junction of the first stretching spring and upper clamping limb is positioned between upper pin and upper roller；Under the effect of the first stretching spring, upper roller rolls and is connected on slide rail；

Lower clamping limb is provided with lower pin-and-hole, and erecting bed front side surface left side is fixed with lower bearing pin, and lower bearing pin is positioned at below push-and-pull block, and lower clamping limb is hinged on erecting bed leading flank in being located in lower pin-and-hole by lower bearing pin；The left end of lower clamping limb is rotatably connected to the second rolling bearing, the right-hand member of lower clamping limb is rotatably connected to bottom roller, it is provided with the second stretching spring between the right part of lower clamping limb and erecting bed, the junction of the second stretching spring and lower clamping limb is positioned between lower bearing pin and bottom roller, under the effect of the second stretching spring, bottom roller rolls and is connected on glidepath.

null2. the special purpose lathe of a kind of high accuracy according to claim 1 processing，It is characterized in that: micro-adjusting mechanism includes stay tube and a screw rod，Prop up in stay tube is located in guide through hole and a stay tube outer wall is slidably matched with the inwall of guide through hole，Guide through hole inwall offers gathering sill in left-right direction，Prop up stay tube outer wall and be provided with the guide pad being positioned at gathering sill，Prop up stay tube left part stretch out guide through hole and protrude and erecting bed left surface，The left end propping up stay tube is rotatably connected to the second rolling bearing，Screw rod right-to-left extend in a stay tube along guide through hole，Screw rod is threadeded with a stay tube，The right-hand member of screw rod is positioned at outside guide through hole，The right-hand member of screw rod is provided with regulation handle，Screw rod right part is rotatably connected in guide through hole by thrust bearing，It is provided with on the right side of push-and-pull block and be directed to the bearing gland that through hole right-hand member blocked and positioned thrust bearing.