CN113478231A - Follow-up stable rolling device for machining slender shaft parts - Google Patents

Abstract

The invention provides a follow-up stabilizing rolling device for machining slender shaft parts, which comprises a base, a follow-up stabilizing assembly and a rolling assembly. The invention has simple structure, reliable operation and convenient and adjustable use, can stabilize the slender shaft part and roll the surface of the slender shaft part, effectively solves the deformation problem generated during the processing of the slender shaft part, improves the surface smoothness and the production efficiency of the slender shaft part after finish machining, and reduces the production technical requirement and the labor intensity.

Description

Follow-up stable rolling device for machining slender shaft parts

Technical Field

The invention relates to the technical field of long shaft part machining, in particular to a follow-up stable rolling device for machining long and thin shaft parts.

Background

When a slender shaft type part is turned, due to the fact that rigidity of the shaft is poor, the slender shaft type part is influenced by factors such as cutting force, gravity, rotation inertia, cutting heat and the like during turning, the slender shaft type part is prone to generating defects such as bending deformation, vibration, taper, waist drum shape, bamboo joint shape and the like during turning, machining precision and surface smoothness of the part are difficult to guarantee, production efficiency is extremely low, and sometimes even machining cannot be achieved. Thus, engineers often use a number of auxiliary fixtures in conjunction with improved processing methods to perform the machining of elongated shafts. Such as a center frame or a follower frame support; in the process, the tool is fed and cut in the direction from the head to the tail, a flexible elastic tip is used as a tail tip, or a slender shaft part is corrected once after rough machining, and the shape error generated in rough machining is corrected, so that the defects of internal stress, part deformation and the like generated in rough machining are overcome. However, when the slender shaft parts are machined by the means and the method, not only the auxiliary clamp and the machining process need to be adjusted, but also a large amount of auxiliary time is consumed. The processing is complicated and has higher technical requirements on operators, the surface finish quality of processed parts is often not satisfactory, and in order to ensure the processing quality and the processing efficiency of slender shaft parts and improve the surface finish of the parts, a special turning clamp for the slender shaft parts must be designed in a targeted manner.

Disclosure of Invention

In order to solve the problems, the invention discloses a follow-up stable rolling device for processing slender shaft parts, which has the advantages of simple structure, reliable operation and convenient and adjustable use, and can stabilize the slender shaft parts and roll the surfaces of the slender shaft parts, thereby effectively solving the deformation problem generated in the processing of the slender shaft parts, improving the surface smoothness and the production efficiency of the slender shaft parts after finish machining, and reducing the production technical requirements and the labor intensity.

The specific scheme is as follows:

the utility model provides a steady rolling press device of slender axles parts machining follow-up which characterized in that: comprises a base, a follow-up stabilizing component and a rolling component; the base is of a vertically arranged plate-shaped structure, and the lower end of the base is provided with a fixing hole for being installed on a large carriage of a machine tool; the follow-up stabilizing assembly comprises a stabilizing part arranged at the upper end of the base, the stabilizing part is of a cylindrical structure with an opening at the rear end, a through hole for a slender shaft part to pass through is arranged in the middle of the front end of the stabilizing part, a first step is arranged at the front end of the inner cavity, an adjusting sleeve is in threaded connection with the rear end of the inner cavity, a bearing matched with the first step is arranged in the first step in a matching manner, an inner ring of the bearing is an inner conical surface, an elastic sleeve capable of being inwards contracted through bearing extrusion is arranged in the bearing in a matching manner, a plane bearing is arranged at the rear end of the elastic sleeve in a matching manner, the adjusting sleeve is of a circular plate-shaped structure, an adjusting barrel is connected onto the front end surface of the adjusting sleeve, a front boss is arranged in the middle of the front end of the adjusting barrel, a rear boss is arranged in the middle of the rear end of the adjusting barrel, the outer side of the adjusting barrel is in threaded connection with the inner side of the stabilizing part, the front boss is of a cylindrical structure, and the rear boss is of a circular plate-shaped structure, three first guide straight grooves are uniformly distributed on the rear end face of the device along the circumferential direction, the first guide straight grooves are arranged along the radial direction of the rear boss, the inner end of each first guide straight groove is communicated with the central hole of the rear boss, the central axes of the adjusting sleeve, the adjusting cylinder, the front boss and the rear boss are collinear, a spring is arranged between the adjusting sleeve and the plane bearing, the pressure of the spring can be adjusted by rotating the adjusting sleeve, the pressure is further transmitted to the plane bearing, then the plane bearing can transmit the pressure to the elastic sleeve to enable the elastic sleeve to contract inwards, so that the sliding force applied to the slender shaft part by the elastic sleeve can be adjusted by rotating the adjusting sleeve, the slender shaft part can be stabilized by the elastic sleeve, the radial cutting force during cutting is borne, the slender shaft part can slide on the slender shaft part, and the purpose that the device moves axially along with the cutting movement is achieved; the rolling component comprises a machine shell which is arranged at the rear side of the adjusting sleeve in a matching way, the machine shell is of a barrel-shaped structure with an opening at the front end, a positioning step which is matched with the adjusting sleeve is arranged in the front end of the machine shell, a turbine mounting hole is arranged on the side surface of the front end, a through hole for a slender shaft part to pass through is arranged in the middle of the rear end, three second guide straight grooves are uniformly distributed on the rear end surface along the circumferential direction, the second guide straight grooves are arranged along the radial direction of the rear end of the machine shell, the inner ends of the second guide straight grooves are communicated with the through hole at the rear end of the machine shell, a driving disc is arranged in the machine shell, the driving disc is of a hollow disc-shaped structure, a gear ring is arranged in the middle of the front end of the driving disc, an annular flange which is in sliding contact with the interior of the machine shell is arranged on the outer side of the rear end of the driving disc, so that the friction between the driving disc and the machine shell can be reduced, turbine teeth are arranged on the outer side of the gear ring along the circumferential direction, an inner cylindrical surface which is in sliding fit with the rear boss, and roller adjusting holes are symmetrically arranged on the front and rear end surfaces of the driving disc, the roller adjusting holes comprise through holes which are formed in the middle of the end face and used for the slender shaft parts to pass through, and three arc-shaped holes which are uniformly formed in the end face along the circumferential direction, the inner ends of the arc-shaped holes are communicated with the through holes, three rollers are uniformly distributed in the inner cavity of the driving disc along the circumferential direction, the rollers are of a circular drum-shaped structure, roller shafts penetrate through the middle of the roller shafts along the axial direction, two ends of each roller shaft are respectively arranged in the corresponding arc-shaped holes in the front and the back in a sliding manner, the front ends of the roller shafts can be arranged in the corresponding first guide straight grooves in a sliding manner after penetrating through the corresponding arc-shaped holes in the front side, the back ends of the roller shafts can be arranged in the corresponding second guide straight grooves in a sliding manner after penetrating through the corresponding arc-shaped holes in the back side, a worm is arranged on one side of the gear ring, the lower sections of the worm are meshed with the turbine teeth, the upper ends of the worm are provided with hexagonal heads after penetrating through the turbine mounting holes, and the lower ends of the worm shafts can be rotatably supported on the inner wall of the casing, the worm can be rotated by screwing the hexagonal head through tools such as a wrench and the like, so that the rotating force is provided to rotate the driving disc, the arc-shaped hole of the driving disc can push the roller shaft of the roller, and at the moment, the two ends of the roller shaft are respectively arranged in the first straight guide groove of the adjusting sleeve and the second strip-shaped guide groove of the shell, so that the three rollers can simultaneously move radially under the action of the arc-shaped hole.

As a further improvement of the invention, the inner side of the rear end of the stable piece is provided with an internal thread, and the outer side of the adjusting cylinder is provided with an external thread matched with the internal thread.

As a further improvement of the invention, the elastic sleeve is in a round table structure with a small front part and a large rear part, a through hole for the slender shaft part to pass through is arranged in the middle axis direction, the outer side is an outer conical surface, the outer side of the rear end is provided with a second step, the outer conical surface is contacted with the inner conical surface of the bearing, and the second step is connected with the inner ring at the front end of the plane bearing, so that the thrust of the plane bearing can act on the elastic sleeve.

As a further improvement of the present invention, the side surface of the elastic sleeve is uniformly distributed with a first strip-shaped hole and a second strip-shaped hole along the circumferential direction, the first strip-shaped hole and the second strip-shaped hole are both arranged along the axial direction of the elastic sleeve, wherein the front end of the first strip-shaped hole is communicated with the front end surface of the elastic sleeve, the rear end of the second strip-shaped hole is communicated with the rear end surface of the elastic sleeve, and the first strip-shaped hole and the second strip-shaped hole are alternately arranged.

As a further improvement of the invention, two ends of the spring respectively abut against the front end surface of the adjusting sleeve and the rear end surface of the plane bearing, and the rear end of the spring is sleeved outside the front boss.

As a further improvement of the invention, the outer side of the adjusting sleeve is uniformly distributed with threaded holes along the circumferential direction, the outer side of the front end of the machine shell is uniformly distributed with screw holes which have the same number and corresponding positions with the threaded holes along the circumferential direction, and the screw holes and the threaded holes are fixedly connected through screws.

As a further improvement of the invention, the rear end of the slender shaft part is clamped by a lathe chuck, the front end of the slender shaft part is supported by an elastic center after passing through a machining follow-up stable rolling device, and the front side surface of the base is provided with a turning tool which moves synchronously with a lathe supporting plate.

The invention has the beneficial effects that:

1. the device moves along with the turning tool, and the elastic sleeve wraps the outer circle surface of the slender shaft part, so that the strength of a machined part during turning of the part is greatly increased, the radial cutting force of the turning tool is ensured to act on the device all the time, and adverse factors generated during turning of the slender shaft part are eliminated;

2. in the working process of the device, the device not only plays a role in increasing the strength of the slender shaft part, but also can perform rolling processing on the surface of the part to play a role in further finishing the surface;

3. when the elastic sleeve works, the outer circle surface of the slender shaft part is wrapped by the elastic sleeve and rotates along with the part, and the friction heat generated between the slender shaft part and the part is greatly reduced;

4. the wrapping force of the elastic sleeve wrapping the outer circle surface of the slender shaft part can be realized by adjusting the pressure of the spring by rotating the adjusting sleeve, so that the device is convenient and quick;

5. under the action of the spring, the elastic sleeve can change along with the tiny change of the diameter of the outer circle surface of the slender shaft part and can wrap the outer circle surface of the slender shaft part all the time;

6. in the design range of the device, the elastic sleeve can be replaced according to different clamping diameters, so that the application range is wide;

7. the rolling force of the roller is adjusted by adopting a worm to drive a worm wheel, so that the rolling force is convenient to adjust, the pressure can be continuously kept constant, and the rolling process is not loosened;

8. the actions of the three rollers are synchronously carried out, so that the stress of the slender shaft part is uniform, and the slender shaft part cannot be deformed and damaged;

9. the surface of the rolled part has a mirror surface effect, so that the surface quality and precision of the slender shaft part are greatly improved;

10. the surface of the rolled part is subjected to extrusion hardening, the hardness of the surface of the part is increased, and the wear resistance and the fatigue strength are improved, so that the service life of the slender shaft part is prolonged, the surface stressed plastic deformation is eliminated, and the dimensional precision can be kept stable for a relatively long time.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the present invention.

FIG. 3 is a schematic view of a base according to the present invention.

Fig. 4 is a schematic view of the elastic sleeve of the present invention.

Fig. 5 is a schematic front end view of an adjusting sleeve according to the present invention.

Fig. 6 is a rear end view of the adjusting sleeve of the present invention.

Fig. 7 is a front view of the housing of the present invention.

FIG. 8 is a front end view of a drive plate of the present invention.

FIG. 9 is a rear end view of a drive plate of the present invention.

FIG. 10 is a schematic view of the roller of the present invention.

Fig. 11 is a schematic view of the worm of the present invention.

Figure 12 is a schematic view of a roll-on-roll assembly of the present invention.

FIG. 13 is a schematic view of the internal structure of the present invention when processing an elongated shaft component.

FIG. 14 is a schematic view of the invention as it is being processed through an elongated shaft feature.

List of reference numerals:

1-base, 2-elastic sleeve, 3-bearing, 4-plane bearing, 5-adjusting sleeve, 6-worm, 7-screw, 8-drive disc, 9-machine shell, 10-roller, 11-spring, 15-slender shaft part, 16-turning cutter, 17-lathe chuck, 18-elastic tip, 20-internal thread, 21-first step, 22-fixing hole, 23-steady piece, 24-first strip hole, 25-external conical surface, 26-second step, 27-second strip hole, 28-roller shaft, 30-external thread, 31-threaded hole, 32-rear boss, 33-first guide straight groove, 34-front boss, 35-hexagonal head, 36-threaded hole, 37-worm mounting hole, 38-second strip guide groove, 39-positioning step, 41-annular flange, 42-arc hole, 43-worm gear tooth and 44-inner cylindrical surface.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.

As shown in figures 1-12, the following stable rolling device for machining the slender shaft part comprises a base 1, a following stable component and a rolling component. The base 1 is a vertically arranged plate-shaped structure, and the lower end of the base is provided with a fixing hole 22 for being installed on a large carriage of a machine tool; the follow-up stabilizing assembly comprises a stabilizing part 23 arranged at the upper end of a base 1, the stabilizing part 23 is of a cylindrical structure with an opening at the rear end, a through hole for a slender shaft part 15 to pass through is arranged in the middle of the front end of the stabilizing part, a first step 21 is arranged at the front end of an inner cavity, an adjusting sleeve 5 is in threaded connection with the rear end of the inner cavity, a bearing 3 matched with the first step 21 is arranged in the first step 21 in a matching way, the inner ring of the bearing 3 is an inner conical surface, an elastic sleeve 2 capable of shrinking inwards through extrusion of the bearing 3 is arranged in the bearing 3 in a matching way, a plane bearing 4 is arranged at the rear end of the elastic sleeve 2 in a matching way, the adjusting sleeve 5 is of a circular plate-shaped structure, an adjusting cylinder is connected onto the front end surface of the adjusting cylinder, a front boss 34 is arranged in the middle of the front end, a rear boss 32 is arranged in the middle of the rear end, the adjusting cylinder-shaped structure matched with the inner cavity of the stabilizing part 23, the outer side of the stabilizing part is in threaded connection with the inner side of the stabilizing part 23, the front boss 34 is of a cylinder-shaped structure, the cylindrical structure, the rear boss 32 is of the circular plate-shaped structure, three first guide straight grooves 33 are uniformly distributed on the rear end face of the device along the circumferential direction, the first guide straight grooves 33 are arranged along the radial direction of the rear boss 32, the inner end of each first guide straight groove is communicated with the central hole of the rear boss 32, the central axes of the adjusting sleeve 5, the adjusting cylinder, the front boss 34 and the rear boss 32 are collinear, a spring 11 is arranged between the adjusting sleeve 5 and the plane bearing 4, the pressure of the spring can be adjusted by rotating the adjusting sleeve, the pressure is further transmitted to the plane bearing, then the plane bearing can transmit the pressure to the elastic sleeve to enable the elastic sleeve to contract inwards, so that the sliding force applied to the slender shaft part by the elastic sleeve can be adjusted by rotating the adjusting sleeve, the elastic sleeve can not only stabilize the slender shaft part and bear the radial cutting force during cutting, but also can slide on the slender shaft part, and the purpose that the device moves axially along with the cutting movement is achieved; the rolling component comprises a machine shell 9 which is arranged at the rear side of an adjusting sleeve 5 in a matching way, the machine shell 9 is of a barrel-shaped structure with an opening at the front end, a positioning step 39 which is matched with the adjusting sleeve 5 is arranged in the front end, a turbine mounting hole 37 is arranged on the side surface of the front end, a through hole for the slender shaft part 15 to pass through is arranged in the middle of the rear end, three second guide straight grooves 38 are uniformly distributed on the rear end surface along the circumferential direction, the second guide straight grooves 38 are arranged along the radial direction of the rear end of the machine shell 9, the inner end of the second guide straight grooves is communicated with the through hole at the rear end of the machine shell 9, a driving disc 8 is arranged in the machine shell 9, the driving disc 8 is of a hollow disc-shaped structure, a gear ring is arranged in the middle of the front end, an annular flange 41 which is in sliding contact with the interior of the machine shell 9 is arranged on the outer side of the rear end, when the driving disc rotates, turbine teeth 43 are arranged on the outer side of the gear ring, and an inner cylindrical surface 44 which is in sliding fit with the rear boss 32, the front end surface and the rear end surface of the driving disk 8 are symmetrically provided with roller adjusting holes, the roller adjusting holes comprise a through hole which is arranged in the middle of the end surface and is used for the penetration of the slender shaft part 15, and three arc-shaped holes 42 which are uniformly arranged on the end surface along the circumferential direction, the inner ends of the arc-shaped holes 42 are communicated with the through hole, three rollers 10 are uniformly arranged in the inner cavity of the driving disk 8 along the circumferential direction, the rollers 10 are in a circular drum-shaped structure, the middle part of the rollers is penetrated with a roller shaft 28 along the axial direction, the two ends of the roller shaft 28 are respectively arranged in the front and rear corresponding arc-shaped holes 42 in a sliding way, wherein the front end of the roller shaft 28 can be arranged in the corresponding first guide straight groove 33 in a sliding way after penetrating through the front corresponding arc-shaped hole 42, the rear end of the roller shaft 28 can be arranged in the corresponding second guide straight groove 38 in a sliding way after penetrating through the rear corresponding arc-shaped hole 42, one side of the gear ring is provided with a worm 6, and the lower section of the worm 6 is meshed with a turbine tooth 43, the upper end passes through the turbine mounting hole 37 and is provided with a hexagonal head 35, the lower end is rotatably supported on the inner wall of the machine shell 9, the worm can be rotated by screwing the hexagonal head through a tool such as a wrench, so that a rotating force is provided to rotate the driving disc, the arc-shaped hole of the driving disc can push the roller shaft of the roller, and at the moment, because the two ends of the roller shaft are respectively arranged in the first straight guide groove of the adjusting sleeve and the second straight guide groove of the machine shell, the three rollers can simultaneously move radially under the action of the arc-shaped hole.

In this embodiment, the inner side of the rear end of the steady 23 is provided with an internal thread 20, and the outer side of the adjusting cylinder is provided with an external thread 30 adapted to the internal thread 20.

In this embodiment, the elastic sleeve 2 is a circular truncated cone structure with a small front part and a large rear part, a through hole for the slender shaft part 15 to pass through is arranged in the middle axis direction, the outer side is an outer conical surface 25, the outer side of the rear end is provided with a second step 26, the outer conical surface 25 is in contact with the inner conical surface of the bearing 3, and the second step 26 is connected with the inner ring at the front end of the plane bearing 4, so that the thrust of the plane bearing can act on the elastic sleeve.

In this embodiment, 2 side edge of elastic sleeve have first bar hole 24 and second bar hole 27 along circumferencial direction evenly distributed, and first bar hole 24 and second bar hole 27 all should set up along the axis direction of elastic sleeve 2, and wherein, the front end of first bar hole 24 and the preceding terminal surface intercommunication of elastic sleeve 2, the rear end of second bar hole 27 and the rear end face intercommunication of elastic sleeve 2, first bar hole 24 and second bar hole 27 set up in turn.

In the present embodiment, both ends of the spring 11 abut against the front end surface of the adjusting sleeve 5 and the rear end surface of the flat bearing 4, respectively, and the rear end of the spring 11 is sleeved outside the front boss 34.

In this embodiment, threaded holes 31 are uniformly distributed on the outer side of the adjusting sleeve 5 along the circumferential direction, screw holes 36 having the same number and corresponding positions as the threaded holes 31 are uniformly distributed on the outer side of the front end of the casing 9 along the circumferential direction, and the screw holes 36 and the threaded holes 31 are fixedly connected through screws 7.

In this embodiment, the rear end of the slender shaft part 15 is clamped by a lathe chuck 17, the front end passes through the machining follow-up stable rolling device and then is supported by a spring center 18, and the front side surface of the base 1 is provided with a turning tool 16 which moves synchronously with a lathe supporting plate.

The working principle of the present invention is as follows (refer to fig. 13 and 14):

(1) the device is fixed on a large carriage of a lathe through a fixing hole 22 of a base 1, and the center of an elastic sleeve is well adjusted, so that the center of the elastic sleeve is consistent with the center of a lathe spindle;

(2) inserting the rear end of the slender shaft part after semi-finish machining into an elastic sleeve of the device, clamping the slender shaft part by using a lathe chuck 17 after penetrating through the device, and propping the front end of the slender shaft part by using a machine tool tailstock elastic center 18;

(3) the shell 9 is rotated to drive the adjusting sleeve 5 to rotate together, the pressure of the spring 11 is adjusted, so that the sliding friction force of the elastic sleeve 2 and the slender shaft part 15 is suitable, and the elastic sleeve can slide on the surface of the slender shaft part and also plays a role in supporting the slender shaft;

(4) starting the machine tool to finish turning the slender shaft part, and synchronously moving the turning tool 16 and the device forwards along with the lathe carriage;

(5) when the turning tool turns a new surface on the surface of the slender shaft part, the rolling device can be adjusted. The worm 6 is rotated in the forward direction, the driving disc 8 rotates, the driving disc spiral groove drives the rollers to move, and under the action of the guide grooves, the three rollers synchronously press the finish machining surface of the slender shaft part at the same time to roll and process the surface of the slender shaft part;

(6) after the surface of the part is completely processed, the turning tool is pushed out, the worm 6 is rotated reversely, and the three rollers synchronously leave the surface of the slender shaft part at the same time.

The technical means disclosed in the invention scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.

Claims (7)

1. The utility model provides a steady rolling press device of slender axles parts machining follow-up which characterized in that: comprises a base (1), a follow-up stabilizing component and a rolling component;

the base (1) is of a vertically arranged plate-shaped structure, and the lower end of the base is provided with a fixing hole (22) for being installed on a large carriage of a machine tool;

the follow-up stabilizing assembly comprises a stabilizing part (23) arranged at the upper end of a base (1), the stabilizing part (23) is of a cylindrical structure with an opening at the rear end, a through hole for a slender shaft part (15) to pass through is formed in the middle of the front end of the stabilizing part, a first step (21) is arranged at the front end of an inner cavity, an adjusting sleeve (5) is in threaded connection with the rear end of the stabilizing part, a bearing (3) matched with the first step (21) is arranged in the first step (21), an inner ring of the bearing (3) is an inner conical surface, an elastic sleeve (2) capable of inwards shrinking through extrusion of the bearing (3) is arranged in the bearing (3) in a matched mode, a plane bearing (4) is arranged at the rear end of the elastic sleeve (2) in a matched mode, the adjusting sleeve (5) is of a circular plate-shaped structure, an adjusting cylinder is connected to the front end face of the adjusting sleeve, a front boss (34) is arranged in the middle of the front end, a rear boss (32) is arranged in the middle of the rear end of the adjusting sleeve, the cylindrical structure matched with the inner cavity of the stabilizing part (23), the outer side of the adjusting sleeve is in threaded connection with the inner side of the stabilizing piece (23), the front boss (34) is of a cylindrical structure, the rear boss (32) is of a circular plate-shaped structure, three first guide straight grooves (33) are uniformly distributed on the rear end face of the rear boss along the circumferential direction, the first guide straight grooves (33) are arranged along the radial direction of the rear boss (32), the inner end of each first guide straight groove is communicated with a central hole of the rear boss (32), the central axes of the adjusting sleeve (5), the adjusting cylinder, the front boss (34) and the rear boss (32) are collinear, and a spring (11) is arranged between the adjusting sleeve (5) and the plane bearing (4);

the rolling component comprises a machine shell (9) which is arranged on the rear side of an adjusting sleeve (5) in a matching manner, the machine shell (9) is of a barrel-shaped structure with an opening at the front end, a positioning step (39) matched with the adjusting sleeve (5) is arranged in the front end of the machine shell, a turbine mounting hole (37) is formed in the side face of the front end, a through hole for a slender shaft part (15) to pass through is formed in the middle of the rear end, three second guiding straight grooves (38) are uniformly distributed on the rear end face along the circumferential direction, the second guiding straight grooves (38) are arranged along the radial direction of the rear end of the machine shell (9), the inner ends of the second guiding straight grooves are communicated with the through hole in the rear end of the machine shell (9), a driving disk (8) is arranged in the machine shell (9), the driving disk (8) is of a hollow disk-shaped structure, a gear ring is arranged in the middle of the front end of the driving disk (8), an annular flange (41) in sliding contact with the inner part of the machine shell (9) is arranged on the outer side of the rear end, and turbine teeth (43) are arranged along the circumferential direction, the inner side of the inner circular cylinder is an inner circular cylinder (44) which is in sliding fit with the rear boss (32), the front end surface and the rear end surface of the driving disc (8) are symmetrically provided with roller wheel adjusting holes, the roller wheel adjusting holes comprise a through hole which is arranged in the middle of the end surface and is used for the penetrating of the slender shaft part (15) and three arc-shaped holes (42) which are uniformly arranged on the end surface along the circumferential direction, the inner ends of the arc-shaped holes (42) are communicated with the through hole, the inner cavity of the driving disc (8) is uniformly provided with three roller wheels (10) along the circumferential direction, the roller wheels (10) are in a circular drum-shaped structure, the middle part of the roller wheels penetrates through a roller wheel shaft (28) along the axial direction, the two ends of the roller wheel shaft (28) are respectively arranged in the arc-shaped holes (42) which correspond to the front and the rear in a sliding way, wherein the front end of the roller wheel shaft (28) can be arranged in the corresponding first guide straight groove (33) in a sliding way after penetrating through the arc-shaped hole (42) which corresponds to the front side, the rear end of the roller shaft (28) can be slidably arranged in the corresponding second guide straight groove (38) after passing through the arc-shaped hole (42) corresponding to the rear side, a worm (6) is arranged on one side of the gear ring, the lower section of the worm (6) is meshed with the turbine teeth (43), the upper end of the worm passes through the turbine mounting hole (37) and is provided with a hexagonal head (35), and the lower end of the worm is rotatably supported on the inner wall of the machine shell (9).

2. The slender shaft part machining follow-up steady rolling device according to claim 1, wherein: the rear end inboard of steadying piece (23) is equipped with internal thread (20), the outside of adjusting a section of thick bamboo is equipped with external screw thread (30) with internal thread (20) looks adaptation.

3. The slender shaft part machining follow-up steady rolling device according to claim 1, wherein: the elastic sleeve (2) is of a round table-shaped structure with a small front part and a large rear part, a through hole for the slender shaft part (15) to pass through is formed in the axis direction of the middle of the elastic sleeve, an outer conical surface (25) is arranged on the outer side of the rear end, a second step (26) is arranged on the outer side of the rear end, the outer conical surface (25) is in contact with an inner conical surface of the bearing (3), and the second step (26) is connected with an inner ring at the front end of the plane bearing (4).

4. The slender shaft part machining follow-up steady rolling device according to claim 3, wherein: elastic sleeve (2) side has first bar hole (24) and second bar hole (27) along circumferencial direction evenly distributed, this sets up of axis direction that elastic sleeve (2) is all followed in first bar hole (24) and second bar hole (27), wherein, the front end of first bar hole (24) and the preceding terminal surface intercommunication of elastic sleeve (2), the rear end of second bar hole (27) and the rear end face intercommunication of elastic sleeve (2), first bar hole (24) and second bar hole (27) set up in turn.

5. The slender shaft part machining follow-up steady rolling device according to claim 1, wherein: the both ends of spring (11) support the preceding terminal surface that leans on adjusting collar (5) and planar bearing (4) respectively, the outside of boss (34) before is established to the rear end cover of spring (11).

6. The slender shaft part machining follow-up steady rolling device according to claim 1, wherein: threaded holes (31) are uniformly distributed in the outer side of the adjusting sleeve (5) along the circumferential direction, screw holes (36) which are the same in quantity and correspond to the threaded holes (31) in position are uniformly distributed in the outer side of the front end of the machine shell (9) along the circumferential direction, and the screw holes (36) are fixedly connected with the threaded holes (31) through screws (7).

7. The slender shaft part machining follow-up steady rolling device according to claim 1, wherein: the rear end of the slender shaft part (15) is clamped by a lathe chuck (17), the front end of the slender shaft part penetrates through the machining follow-up stable rolling device and then is supported by an elastic center (18), and a turning tool (16) which moves synchronously along with a lathe supporting plate is arranged on the front side surface of the base (1).

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