CN205614064U - A lathe that is used for turning stock class part - Google Patents

Abstract

Lathes for turning long rod parts, including bed, tool holder, tool holder, jaw lathe center holder, chuck and motor, motor, jaw lathe center holder and tool holder The clamping device is fixed on the bed, and the main shaft of the motor is fixedly connected with the chuck; the tool bar clamping device includes a horizontally arranged base, tool bar and tool bar cover, and the bottom of the base is embedded with a downward protruding base surface. The positioning block, the base is fixedly connected with the tool bar sleeve through the support seat, the tool bar cover is a cylindrical structure, the center line of the tool bar cover is horizontally arranged along the left and right directions, and the cylindrical tool bar cover is arranged along the axial direction. Mounting cavity This device has high machining and turning precision, good stability, low defective rate and accurate centering.

Description

Lathes for turning long rod parts

technical field

The utility model belongs to the technical field of mechanical processing equipment, in particular to a lathe used for turning long rod parts.

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 widest type of machine tool processing; but when the lathe processes the deep hole inner circle of the workpiece, due to the small diameter of the workpiece and the large aspect ratio, the conventional tools on the lathe cannot realize deep hole processing; due to the depth of the hole, the processed tools are all If it is too long, the vibration of the tool cannot be avoided during the processing, and the stability of the processing will be reduced, which will cause damage to the workpiece, and the workpiece can only be replaced, which increases the operating cost;

In addition, the center frame currently used for machining long shafts on ordinary lathes and small CNC lathes uses a cast iron center frame to clamp the workpiece at three points. It needs to be manually adjusted at any time during processing to realize the clamping positioning in long shaft processing. The disadvantage of the cast iron center frame is that it needs to be adjusted every time a workpiece with a different diameter is processed, which is time-consuming and laborious, which reduces the efficiency of processing, and after manual adjustment, the centering accuracy is poor and the processing effect is poor; the patent application number is 2014200868679 The document "Electric Centering Center Frame for Lathes" and the patent document "Manual Centering Center Frames for Lathes" with application number 2014200868861 both introduce a kind of center frame for lathes. The structures of the two types of center frames for lathes are the same except for the driving mode. , which has the following defects: the clamping arm cannot clamp the workpiece, and the position of the clamping bearing on the lug pulley and the clamping bearing on the two clamping arms and the clamping point of the workpiece is a triangle, when the triangle is equilateral When it is a triangle, the clamping effect on the workpiece is the best. When the triangle is an obtuse triangle, the clamping effect on the workpiece is not very ideal, but when the size of the workpiece is different, it will inevitably cause the three clamping bearings to clamp the workpiece. The position of the holding point forms an obtuse triangle, so the clamping effect is difficult to guarantee.

Utility model content

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

In order to solve the above technical problems, the utility model adopts the following technical scheme: a lathe for turning long rod parts, including a bed, a tool bar, a tool bar clamping device, a jaw type lathe center clamp, a chuck and a 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 tool bar clamping device includes a horizontally arranged base, tool bar and tool bar cover. The bottom of the base is embedded with a positioning block that protrudes downward from the lower surface of the base. The base is fixedly connected with the tool bar cover through the support seat. The rod sleeve is a cylindrical structure, the center line of the tool rod sleeve is arranged horizontally along the left and right directions, and there is a cylindrical installation cavity along the axial direction inside the tool rod sleeve. The left and right ends of the installation cavity are open, and the center of the installation cavity line is located in front of the center line of the tool rod cover, the rear side of the tool rod cover is axially provided with a first gap, the first gap communicates with the installation cavity, and the rear upper part of the tool rod cover is horizontally arranged with at least two There are two mounting slots, the rear side of the tool rod cover is provided with an upper threaded hole vertically from top to bottom at the bottom of each mounting slot, the mounting slot is connected up and down with the first notch through the upper threaded hole, and at least one lower thread is opened on the tool bar cover. The lower threaded hole is located below the first notch and is set corresponding to the upper threaded hole. The upper and lower corresponding upper threaded holes and the lower threaded hole are threaded and connected with fastening bolts, and the other upper threaded holes are internally threaded with adjustment bolts. The coaxial line in the installation cavity is provided with an elastic sleeve, and the rear side of the elastic sleeve is provided with a second gap along the axial direction. The second gap and the first gap are set correspondingly. The center line of the mounting hole is set horizontally along the front-to-back direction. A blade holder is installed in the installation hole. The front end of the blade holder is equipped with a blade. The center line of the pressing screw hole is set horizontally along the left-right direction. 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 press-fitted with the top of the blade seat;

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.

A slot is axially opened on the outer surface of the elastic sleeve, and a locking pin is inserted into the slot.

The support base 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 all fixed on the lower side of the cutter bar sleeve.

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) Tool bar clamping device First, the tool bar sleeve is fixed on the base through the support seat. The fixing method can be welding, which ensures the stability of the tool bar cover when processing the workpiece; the tool bar cover is a cylindrical structure, A cylindrical installation cavity is arranged in the axial direction in the tool rod sleeve. The left and right ends of the installation cavity are open. The center line of the installation cavity is located directly in front of the center line of the tool rod sleeve. There is a first notch, and the first notch communicates with the installation cavity. An adjustment hole and a fastening hole are vertically opened on the rear side of the tool rod cover from top to bottom. The adjustment hole and the fastening hole are both through holes and arranged side by side. Through the first gap, the upper end of the adjustment hole is located on the upper side wall of the knife rod sleeve, the lower end of the adjustment hole is located on the lower side wall of the knife rod sleeve, the upper end of the fastening hole is located on the upper side wall of the knife rod sleeve, and the lower end of the fastening hole is located at the bottom of the first gap; A fastening bolt is threaded from top to bottom in the hole, and the fastening bolt passes through the first gap, and an adjusting bolt is threaded from top to bottom in the fastening hole; by adjusting the adjusting bolt and the fastening bolt, it is more convenient to clamp Hold the tool rod and elastic sleeve; the elastic sleeve slows down the vibration of the tool rod when processing deep holes; insert a clamping pin in the slot, and the clamping pin is used to make the elastic sleeve more closely fit in the installation cavity to prevent The elastic sleeve vibrates due to the gap with the tool rod sleeve;

(2) The left end of the tool bar is provided with a compression screw and a mounting hole. The opening of the mounting hole faces forward and a blade seat is installed in the mounting hole. The blade seat is equipped with a blade. The left end and the compression screw are press-fitted with the blade seat. When the blade is damaged, just loosen the compression screw and then take out and replace the blade. It is convenient to replace the blade;

(3) The claw-type lathe center clamper can accurately center and clamp workpieces of 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 to make the push-pull The block moves 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 on the right end of the upper clamping arm rolls to the left and lower along the upper slide rail, and the right end of the lower clamping arm The lower roller rolls upward to the left along the slide 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 moves downward. The left end of the upper clamping arm moves upwards, similarly the 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, and then push the push-pull handle to the left, the push-pull block along The dovetail groove moves to the left. Contrary to the previous one, 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 left end of the upper clamping arm and the The distance between the lower clamping arms 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 workpiece surface, then stop pushing the push-pull handle; Position, so that the third rolling bearing is also pressed 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, there is a thread between the support tube and the screw rod. connection, so the support tube moves to the left under the rotation of the screw, and when the third rolling bearing at the left end of the support tube is pressed 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 simultaneously clamping 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, and the workpiece will not tilt, and the micro-adjustment mechanism can ensure that the three rolling bearings and the outer surface of the workpiece clamp the driving triangle. It is an equilateral triangle with accurate centering and better clamping effect compared with the centering center frame mentioned in the background technology;

(4) 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; between the right end of the upper clamping arm and the mounting table, and between the right end of the lower clamping arm and the The first tension spring and the second tension spring are arranged between the tables. The significance of the first tension spring and the second tension spring is to enable the roller to press and roll on the upper slide rail and the lower slide rail; the right part of the screw rod passes through The thrust bearing is rotatably connected in the guide through hole, 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 clamper of the jaw type lathe.

detailed description

As shown in Figure 1, the lathe of the utility model for turning long rod parts includes a bed 100, a tool bar 52, a tool bar clamping device 104, a jaw type lathe center clamp 101, a chuck 102 and The motor 103, the motor 103, the jaw type lathe center clamper 101 and the tool bar clamping device 104 are fixed on the bed 100, and the main shaft of the motor 103 is fixedly connected with the chuck 102;

As shown in Figures 2-4, the tool bar clamping device 104 includes a horizontally arranged base 41 and a tool bar cover 42. The bottom of the base 41 is embedded with a positioning block 43 protruding downward from the lower surface of the base 41. The base 41 is fixedly connected with the tool bar cover 42 through the support seat, the tool bar cover 42 is a cylindrical structure, the center line of the tool bar cover 42 is arranged horizontally along the left and right directions, and the tool bar cover 42 is provided with a cylindrical installation along the axial direction. Cavity 44, the left end and the right end of installation cavity 44 are all open, and the center line of installation cavity 44 is positioned at the front of the center line of tool bar cover 42, and the rear side of tool bar cover 42 is axially provided with first gap 45, the first The notch 45 communicates with the installation cavity 44, and at least two installation grooves 61 are horizontally arranged side by side on the upper rear side of the knife rod cover 42 along the left and right directions, and the rear side of the knife rod cover 42 is vertically opened from top to bottom at the bottom of each installation groove 61 There is an upper threaded hole 46, the mounting groove 61 is connected up and down with the first notch 45 through the upper threaded hole 46, and at least one lower threaded hole 47 is provided on the tool bar cover 42, and the lower threaded hole 47 is located below the first notch 45 and is connected with the upper threaded hole. Holes 46 are arranged correspondingly, and upper and lower corresponding upper threaded holes 46 and lower threaded holes 47 are pierced and threaded with fastening bolts 48, and other upper threaded holes 46 are internally threaded with adjusting bolts 49; the coaxial line in the installation cavity 44 An elastic sleeve 50 is provided, and the rear side of the elastic sleeve 50 is provided with a second notch 51 in the axial direction. The second notch 51 and the first notch 45 are correspondingly arranged. The knife rod 52 is located in the elastic sleeve 50. Tighten the screw hole and the mounting hole 54, the center line of the mounting hole 54 is arranged horizontally along the front-to-back direction, a blade seat 55 is equipped in the mounting hole 54, a blade 56 is equipped at the front end of the blade seat 55, and the center line of the pressing screw hole is horizontal along the left-right direction Setting, the right end of the compression screw hole communicates with the left side of the mounting hole 54, the internal thread of the compression screw hole is connected with a compression screw 53, and the right end of the compression screw 53 is press-fitted with the blade seat 55.

A slot 57 is defined axially on the outer surface of the elastic sleeve 50 , and a locking pin 58 is inserted into the slot 57 .

The support base includes a connecting plate 59 and two supporting plates 60 fixed on the base 41, the two supporting plates 60 are fixed at both ends of the connecting plate 59, and the upper edges of the connecting plate 59 and the two supporting plates 60 are all fixed on Knife bar cover 42 lower sides.

As shown in Fig. 5, the clamper 101 of the jaw type lathe center 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 1. The front side surface of platform 2; the jaw 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 The left side is 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, the rear side of the push-pull block 3 The guide rail is fixed along the horizontal direction, and the front side surface of the installation platform 2 is provided with a dovetail groove along the horizontal direction. 3 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 is provided with a guide through hole 8 along the centerline direction of the push-pull block 3. 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; push-pull The right side of the block 3 is fixed with two pull rods 9 along the left and right horizontal direction, 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 is fixed between the two pull rods 9 11. The front side of the installation 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 connected with 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.

The working process of this device during the specific turning operation is:

(1) First, fix the tool bar 52 in the installation cavity 44 of the tool bar sleeve 42: assemble the tool bar 52 in the elastic sleeve 50, then operate and loosen the fastening bolt 48, and tighten the adjusting bolt 49 at the same time. The top presses on the wall of the tool bar cover 42 below the first notch 45. By operating the fastening bolt 48 and the adjusting screw 49, the volume of the installation cavity 44 increases, and the elastic sleeve 50 and the tool bar 52 can be better assembled on the In the installation chamber 44, loosen the adjusting bolt 49 and tighten the fastening bolt 48 afterwards, the caliber of the installation chamber 44 is reduced, the elastic sleeve 50 is fixed in the installation chamber 44, and then the locking pin 58 is inserted in the slot 57;

(2) Then, one end of the workpiece 22 is inserted into the center clamper 101 of the jaw type lathe, and the other end of the workpiece 22 is clamped on the chuck 102, and then the base 41 is fixed on the On the bed 100, the end of the cutter bar 52 equipped with the blade 56 extends into the workpiece 22, the main shaft of the motor 103 is connected to the workpiece 22 through the chuck 102 of the workpiece 22, the motor 103 is started, and the motor 103 drives the workpiece 22 to rotate. The blade 56 on the tool bar 52 performs deep hole machining on the workpiece 22 .

The operation method for stably clamping the workpiece 22 on the center clamper 101 of the jaw type lathe is: fix the mounting base 1 on the bed 100 through fastening bolts, assuming that the direction of the person facing the view in Fig. 5 is Before, the workpiece 22 passes through the device from back to front; the specific operation of clamping the workpiece 22 on the device is as follows: 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, Make the push-pull block 3 move to the right along the dovetail groove on the installation platform 2, under the action of the first tension spring 17 and the second tension spring 26, the upper roller 16 on the right end of the upper clamping arm 4 moves along the upper slide rail 6 The lower left rolls, and the lower roller 25 at the right end of the lower clamping arm 5 rolls upwards to the left along the slide rail 7. Since the upper clamping arm 4 and the lower clamping arm 5 are respectively hinged on the first pin 14 and the second pin 23 On the mounting table 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), Then the workpiece 22 is placed between the upper clamping arm 4 and the lower clamping arm 5, and then the push-pull handle 10 is pushed to the left, and the push-pull block 3 moves to the left along the dovetail groove. The roller 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 , until the first rolling bearing 15 and the second rolling bearing 24 are pressed against the surface of the workpiece 22, 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 22, The specific 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 slidably 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 The guide block 28 on the 18 moves left along the guide groove 27 under the rotation of the screw rod 19. When the third rolling bearing 20 on the left end of the support tube 18 is pressed against the workpiece 22, the rotation of the adjusting handle 21 is stopped. At this time, the first rolling bearing 15, The second rolling bearing 24 and the third rolling bearing 20 are clamped on the outer surface of the workpiece 22 at the same time. Due to the special positions of the three rolling bearings, the center line of the workpiece 22 must be on the horizontal plane, and the workpiece 22 will not be tilted. Next, the workpiece 22 can be carried out. Operation.

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 (4)

1. for the lathe of the long component of rod category of turning, it is characterized in that: include lathe bed, 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；

nullKnife bar clamping device includes horizontally disposed pedestal、Knife bar and knife bar set，Base bottom is embedded with the locating piece of downwardly projecting pedestal lower surface，By supporting, seat is fixing with knife bar set to be connected pedestal，Knife bar set is cylinder-like structure，The centrage of knife bar set is horizontally disposed with in left-right direction，The installation cavity of cylinder in axial direction it is provided with in knife bar set，Left end and the right-hand member of installation cavity are the most uncovered，The centrage of installation cavity is positioned at the dead ahead of the centrage of knife bar set，The rear side of knife bar set axially offers the first breach，First breach connects with installation cavity，The upper back horizontal Tile in left-right direction of knife bar set is provided with at least two mounting groove，Bottom each mounting groove, upper screwed hole is the most vertically offered on rear side of knife bar set，Mounting groove passes through upper screwed hole and the first breach up/down perforation，Knife bar puts and at least offers a lower screwed hole，Lower screwed hole is positioned at below the first breach and is correspondingly arranged with upper screwed hole，The most corresponding upper screwed hole has fastening bolt with wearing and threaded in lower screwed hole，Other upper screwed hole female thread connects regulation bolt；In installation cavity, coaxial line is provided with resilient sleeve, the rear side of resilient sleeve in axial direction offers the second breach, second breach and the first breach are correspondingly arranged, knife bar right-hand member is plugged in resilient sleeve, knife bar left part is provided with compression screw and installing hole, the centrage of installing hole is horizontally disposed with along the longitudinal direction, blade bearing it is equipped with in installing hole, blade bearing front end is equipped with blade, the centrage compressing screw is horizontally disposed with in left-right direction, compress screw right-hand member to connect with on the left of installing hole, compress the connection of screw female thread and have housing screw, housing screw right-hand member and the press-fit of blade bearing top；

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, guide rail it is fixed with 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 at erecting bed leading flank 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 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 and is symmetrical arranged about 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 at 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 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, the second stretching spring it is provided with between right part and the erecting bed of lower clamping limb, the junction of the second stretching spring and lower clamping limb is between lower bearing pin and bottom roller, under the effect of the second stretching spring, bottom roller rolls and is connected on glidepath.

Lathe for the long component of rod category of turning the most according to claim 1, it is characterised in that: resilient sleeve outer surface axially offers slot, is inserted with clamping pin in slot.

Lathe for the long component of rod category of turning the most according to claim 2, it is characterized in that: support one piece of connecting plate and two pieces of gripper shoes that seat includes being fixed on pedestal, 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 being each attached to knife bar set following side.

nullLathe for the long component of rod category of turning the most according to claim 3，It is characterized in that: micro-adjusting mechanism includes stay tube and a screw rod，In stay tube is located in guide through hole and the inwall of a stay tube outer wall and guide through hole is slidably matched，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 is directed to through hole right-hand member and blocks and position the bearing gland of thrust bearing.