CN218110433U

CN218110433U - Servo jacking tailstock of cylindrical grinding machine

Info

Publication number: CN218110433U
Application number: CN202222414191.9U
Authority: CN
Inventors: 钱潘平
Original assignee: ZHEJIANG QUANSHUN MACHINE TOOL CO Ltd
Current assignee: ZHEJIANG QUANSHUN MACHINE TOOL CO Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-23
Anticipated expiration: 2032-09-09

Abstract

The utility model belongs to the technical field of machinery, a tight tailstock in servo top of cylindrical grinder is related to, including feeding the casing, feed the casing and have the inner chamber that the axial link up both ends, the axial activity sets up the sleeve in the inner chamber, sleeve fixed connection nut seat is equipped with the lead screw along the axial in the sleeve, is connected with the lead screw through the screw thread in the nut seat, the one end of lead screw is passed through the reduction gear and is connected with servo motor, the lead screw passes through coupling mechanism and can dismantle with the reduction gear and be connected. The invention adopts the servo motor and the speed reducer to drive the screw rod to tightly press the workpiece, can quantitatively adjust the axial pressing force, and adapts to strong grinding by adjusting the output torque.

Description

Servo jacking tailstock of cylindrical grinding machine

Technical Field

The utility model belongs to the technical field of machinery, a cylindrical grinder is related to, especially, relate to a tight tailstock in servo top of cylindrical grinder.

Background

In recent years, most of tail frame mechanisms of numerical control grinding machines adopt manual or hydraulic mechanisms, and the jacking force is difficult to control. However, the magnitude of the tightening force is an important parameter for grinding shaft-like workpieces. For complex stress conditions such as precision grinding and powerful grinding, the axial force is not easy to control, so that the precision of the grinding machine is influenced.

The Chinese utility model patent with publication number CN208342571U discloses a turning and turning locking dual-purpose grinding machine center tailstock device, which comprises a tailstock body shell, wherein a sliding sleeve is axially arranged in the tailstock body shell in a sliding manner, a center shaft is rotatably supported in the sliding sleeve, a nut seat is fixedly connected on the rear end surface of the sliding sleeve, a center is arranged at the front part of an inner cavity of the center shaft, a transmission screw rod is arranged at the rear part of the inner cavity of the center shaft, the transmission screw rod is screwed with the nut seat to tightly push the center, and the center rotates along with the center shaft to realize the synchronous rotation with a workpiece; the center shaft can be fixedly connected with the sliding sleeve through the locking device to realize centering support for rotating the workpiece and preventing the center from rotating.

Although the technical scheme reduces the friction and abrasion between the center and the center hole of the end face of the workpiece and improves the machining precision of the workpiece, the technical scheme adopts the mode of the hand wheel for driving and is not suitable for strong grinding.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a tight tailstock in servo top of cylindrical grinder is provided.

The utility model provides a tight tailstock in servo top of cylindrical grinder, including feeding the casing, feed the inner chamber that the casing has the axial to link up both ends, axial activity sets up the sleeve in the inner chamber, sleeve fixed connection nut seat is equipped with the lead screw along the axial in the sleeve, is connected with the lead screw through the screw in the nut seat, the one end of lead screw is passed through the reduction gear and is connected with servo motor, the lead screw passes through coupling mechanism and can dismantle with the reduction gear and be connected.

The utility model discloses a servo motor drives the tight work piece in lead screw top with the reduction gear, can quantitatively adjust the tight power in axial top, through the powerful grinding of adjusting output torque adaptation.

In the servo jacking tailstock of the cylindrical grinding machine, the connecting mechanism comprises a coupler which is connected with the tail end of the screw rod and the output end of the speed reducer, a supporting sleeve is covered outside the coupler and fixedly connected between the end cover of the speed reducer and the feeding shell, and the supporting sleeve is connected with the speed reducer through a screw.

In the servo tight tailstock in top of foretell cylindrical grinder, one side of supporting the cover sets up the access panel, the access panel passes through the apron and seals.

The connecting part is convenient to overhaul.

In the servo jacking tailstock of the cylindrical grinding machine, the speed reducer is detachably connected with the screw rod through the matching of the coupler and the support sleeve.

The feed housing has an oil inlet in communication with the internal cavity. The sleeve is lubricated to maintain a good dynamic response.

In the servo puller tailstock of the cylindrical grinding machine, the tail end of the inner cavity of the feeding shell is provided with a tail end flange, and the tail end flange is sleeved on the outer side of the tail end of the screw rod and is connected with the screw rod through a deep groove ball bearing.

The deep groove ball bearing is additionally arranged, so that the screw rod is connected with the driving mechanism to realize high-precision feeding due to small friction coefficient and high limit rotating speed.

In the servo tight tailstock in top of cylindrical grinder, the terminal surface is connected with the dish spring before the fender shoulder of tail end flange, the dish spring passes through thrust ball bearing and connects the lead screw.

The disc spring, namely the butterfly spring, can absorb the axial force, so that the transmission clearance between the screw rod and the workpiece is automatically reset in a micro-scale manner, and the processing precision is further improved.

In the servo jacking tailstock of the cylindrical grinding machine, the nut seat is fixedly nested in the sleeve.

Through the nut seat of nested design, through increase friction area, make nut seat and telescopic cooperation more firm, have the wholeness to improve telescopic atress, make it can move more steadily, prolong the life of equipment.

In the cylindrical grinding machine servo jacking tailstock, the sleeve is internally provided with a workpiece supporting cavity and a fixing cavity axially arranged at the rear end of the workpiece supporting cavity, and the diameter of the fixing cavity is larger than that of the rear end of the workpiece supporting cavity so that the front part of the fixing cavity forms a convex edge; the front end of the nut seat is embedded into the fixed cavity, the rear end of the nut seat protrudes along the circumferential direction to form an outer edge which is abutted against the rear end face of the sleeve, and the outer edge outer wall is in clearance fit with the inner wall of the inner cavity.

In the cylindrical grinding machine servo puller tailstock, the outer edge of the nut seat is connected with the rear end face of the sleeve through a bolt.

In the servo tight tailstock in top of cylindrical grinder, the front end of feeding the casing is provided with the protecgulum, corresponds the inner chamber in this protecgulum and is provided with the through-hole that supplies the sleeve axial to pass through, and the through-hole inboard of protecgulum is provided with dustproof sealing ring.

The grinding device can prevent the fragments in the grinding process from entering the inner cavity to cause abrasion to the sleeve and even influence the normal action of the sleeve.

In the servo tight tailstock in top of foretell cylindrical grinder, dust seal includes that the internal diameter is greater than the main part of sleeve external diameter and sets up at the main part front end internal diameter and dwindles gradually until leaning on the dust guard in the sleeve outer wall.

Through the dustproof sealing ring structure that the internal diameter reduces gradually, reduce the area of contact of sealing washer and sleeve outer wall, reduce frictional force, guarantee telescopic normal activity, effectively utilize the elasticity formation enclosed construction of dustproof portion simultaneously to the formation blocks.

Compared with the prior art, the utility model has the advantages of:

The utility model discloses a butterfly spring makes the transmission clearance between lead screw and the work piece, carries out automatic micro-reset to further improve the machining precision.

The utility model discloses a nut seat of nested formula design through increase friction area, makes nut seat more firm with telescopic cooperation, has the wholeness to improve telescopic atress, make it can move more steadily, prolong the life of equipment.

The utility model discloses set up dust seal, can prevent that the piece among the grinding process from getting into the inner chamber, cause wearing and tearing to the sleeve, influence telescopic normal action even.

Drawings

Fig. 1 is a sectional view of the servo top tightening tailstock of the cylindrical grinding machine provided by the utility model.

Fig. 2 is a perspective view of the servo top tightening tailstock of the cylindrical grinding machine provided by the utility model.

Fig. 3 is a partial enlarged view of the servo top tightening tailstock of the cylindrical grinding machine provided by the utility model.

Fig. 4 is an enlarged view of a portion a in fig. 1.

Fig. 5 is an enlarged view of a portion B in fig. 1.

In the figure: the device comprises a feeding shell 1, an inner cavity 2, a sleeve 3, a nut seat 4, a screw rod 5, a speed reducer 6, a servo motor 7, a connecting mechanism 8, a coupling 9, a supporting sleeve 10, an inspection window 11, a cover plate 12, a tail end flange 13, a deep groove ball bearing 14, a disc spring 15, a thrust ball bearing 16, a workpiece supporting cavity 17, a fixing cavity 18, a convex edge 19, an outer edge 20, a front cover 21, a dust-proof sealing ring 22, a main body part 23, a dust-proof part 24 and an oil inlet 25.

Detailed Description

Further illustrated by the following specific examples;

in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and the present invention is therefore not limited to the specific embodiments disclosed below.

As shown in fig. 1, the servo tight tailstock in top of cylindrical grinding machine, including feeding the body 1, feed the body 1 and have the inner chamber 2 that the axial link up both ends, the axial activity sets up the sleeve 3 in the inner chamber 2, the sleeve 3 fixed connection nut seat 4, be equipped with the lead screw 5 along the axial in the sleeve 3, be connected with the lead screw 5 through the screw in the nut seat 4, the one end of lead screw 5 is passed through reduction gear 6 and is connected with servo motor 7, the lead screw 5 passes through coupling mechanism 8 and can dismantle with reduction gear 6 and be connected.

The utility model discloses a servo motor drives the tight work piece in lead screw top with the reduction gear, can quantitatively adjust the tight power in axial top, can dismantle the reduction gear and can be convenient for change the reduction gear as required, through the powerful grinding of adjusting output torque adaptation.

Specifically, referring to fig. 1 and 4, the sleeve 3 has a workpiece supporting cavity 17 and a fixing cavity 18 axially disposed at a rear end of the workpiece supporting cavity 17, and the diameter of the fixing cavity 18 is larger than that of the rear end of the workpiece supporting cavity 17 so that a front portion of the fixing cavity 18 forms a convex edge 19. The front end of the nut seat 4 is embedded into the fixed cavity 18 to form interference fit, the rear end of the nut seat 4 protrudes along the circumferential direction to form an outer edge 20 which is abutted against the rear end face of the sleeve 3, and the outer wall of the outer edge 20 is in clearance fit with the inner wall of the inner cavity 2. The outer edge 20 of the nut seat 4 is connected with the rear end surface of the sleeve 3 through a plurality of bolts. Through the nut seat 4 of nested design, through increase friction area, make nut seat 4 more firm with the cooperation of sleeve 3, have the wholeness.

The tail end of the inner cavity 2 of the feeding shell 1 is provided with a tail end flange 13, the front end face of a blocking shoulder of the tail end flange 13 is connected with a disc spring 15, and the disc spring 15 is connected with the screw rod 5 through a thrust ball bearing 16. The transmission clearance between the screw rod and the workpiece is automatically reset in a micro-scale manner, so that the processing precision is further improved. The tail end flange 13 is sleeved on the outer side of the tail end of the screw rod 5 and is connected with the screw rod 5 through a deep groove ball bearing 14, so that the screw rod is connected with a driving mechanism to realize high-precision feeding.

As shown in fig. 1, 2 and 3, the connection mechanism 8 includes a coupling 9 for connecting the end of the lead screw 5 with the output end of the speed reducer 6, a support sleeve 10 is covered outside the coupling 9, the support sleeve 10 is fixedly connected between the end cover of the speed reducer 6 and the feed housing 1, and the support sleeve 10 is connected with the speed reducer 6 through screws. The speed reducer 6 is inserted into the coupling 9 and is detachably connected with the support sleeve 10 through a screw. An access panel 11 is arranged on one side of the support sleeve 10, and the access panel 11 is closed by a cover plate 12.

With reference to fig. 1 and 2, the feed housing 1 has an oil inlet 25, the oil inlet 25 communicates with the inner cavity 2, and lubricating fluid is supplied between the inner cavity 2 and the sleeve 3 through the oil inlet 25 to ensure dynamic response.

As shown in fig. 5, the front end of the feeding housing 1 is provided with a front cover 21, a through hole for the sleeve 3 to pass through in the axial direction is provided in the front cover 21 corresponding to the inner cavity 2, and a dust seal 22 is provided inside the through hole of the front cover 21. The dustproof sealing ring 22 comprises a main body part 23 with the inner diameter larger than the outer diameter of the sleeve 3 and a dustproof part 24 which is arranged at the front end of the main body part 23 and gradually reduces in inner diameter until the dustproof part abuts against the outer wall of the sleeve 3.

The utility model discloses in reduction gear 6 and servo motor 7 are prior art, and its concrete structure is not repeated herein.

The working principle of the utility model is as follows:

the servo motor 7 controls the screw rod 5 to rotate through the speed reducer 6 so as to realize axial action of the sleeve 3, a workpiece clamped in the sleeve 3 moves along with the screw rod 5, and the screw rod 5 tightly supports the workpiece under the action of the disc spring 15, so that quantitative adjustment of axial supporting force is realized. Meanwhile, the speed reducer with the detachable structure can be replaced conveniently as required, and output torque is adjusted to adapt to strong grinding.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the feeding housing 1, the inner cavity 2, the sleeve 3, the nut seat 4, the lead screw 5, the speed reducer 6, the servo motor 7, the connecting mechanism 8, the coupling 9, the support sleeve 10, the access window 11, the cover plate 12, the tail end flange 13, the deep groove ball bearing 14, the disc spring 15, the thrust ball bearing 16, the workpiece support cavity 17, the fixed cavity 18, the convex edge 19, the outer edge 20, the front cover 21, the dust seal ring 22, the main body part 23, the dust prevention part 24, the oil inlet 25 and the like are used more frequently herein. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a tight tailstock in servo top of cylindrical grinder, includes and feeds casing (1), feeds casing (1) and has inner chamber (2) that the axial link up both ends, axial activity sets up sleeve (3) in inner chamber (2), sleeve (3) fixed connection nut seat (4), be equipped with lead screw (5) along the axial in sleeve (3), be connected its characterized in that through screw and lead screw (5) in nut seat (4): one end of the screw rod (5) is connected with the servo motor (7) through the speed reducer (6), and the screw rod (5) is detachably connected with the speed reducer (6) through the connecting mechanism (8).

2. The cylindrical grinding machine servo puller tailstock according to claim 1, characterized in that: coupling mechanism (8) are including coupling joint (9) of connecting lead screw (5) end and reduction gear (6) output, coupling joint (9) outside cover is equipped with and supports cover (10), should support cover (10) fixed connection between the end cover of reduction gear (6) and feed casing (1), and support cover (10) and reduction gear (6) through the screw connection.

3. The cylindrical grinding machine servo puller tailstock according to claim 1, characterized in that: the feeding shell (1) is provided with an oil inlet (25), and the oil inlet (25) is communicated with the inner cavity (2).

4. The cylindrical grinding machine servo puller tailstock according to claim 1, characterized in that: the tail end of the inner cavity (2) of the feeding shell (1) is provided with a tail end flange (13), and the tail end flange (13) is sleeved on the outer side of the tail end of the screw rod (5) and is connected with the screw rod (5) through a deep groove ball bearing (14).

5. The cylindrical grinder servo puller tailstock according to claim 4, characterized in that: the front end face of the retaining shoulder of the tail end flange (13) is connected with a disc spring (15), and the disc spring (15) is connected with the screw rod (5) through a thrust ball bearing (16).

6. The cylindrical grinding machine servo puller tailstock according to claim 1, characterized in that: the nut seat (4) is fixedly nested in the sleeve (3).

7. The cylindrical grinder servo puller tailstock according to claim 6, characterized in that: the sleeve (3) is internally provided with a workpiece supporting cavity (17) and a fixing cavity (18) which is axially arranged at the rear end of the workpiece supporting cavity (17), and the diameter of the fixing cavity (18) is larger than that of the rear end of the workpiece supporting cavity (17) so that the front part of the fixing cavity (18) forms a convex edge (19); the front end of the nut seat (4) is embedded into the fixed cavity (18), the rear end of the nut seat (4) protrudes along the circumferential direction to form an outer edge (20) which abuts against the rear end face of the sleeve (3), and the outer wall of the outer edge (20) is in clearance fit with the inner wall of the inner cavity (2).

8. The cylindrical grinder servo puller tailstock according to claim 7, characterized in that: the outer edge (20) of the nut seat (4) is connected with the rear end face of the sleeve (3) through a bolt.

9. The cylindrical grinding machine servo puller tailstock according to claim 1, characterized in that: the front end of the feeding shell (1) is provided with a front cover (21), a through hole for the sleeve (3) to pass through axially is formed in the front cover (21) corresponding to the inner cavity (2), and a dustproof sealing ring (22) is arranged on the inner side of the through hole of the front cover (21).

10. The cylindrical grinder servo puller tailstock according to claim 9, characterized in that: the dustproof sealing ring (22) comprises a main body part (23) with the inner diameter larger than the outer diameter of the sleeve (3) and a dustproof part (24) which is arranged at the front end of the main body part (23) and gradually reduces the inner diameter until the dustproof part abuts against the outer wall of the sleeve (3).