CN214722245U

CN214722245U - Novel hydraulic self-centering center frame

Info

Publication number: CN214722245U
Application number: CN202120512222.7U
Authority: CN
Inventors: 刘镇; 徐浩
Original assignee: Chuzhou Microsecond Precision Machinery Co ltd
Current assignee: Chuzhou Microsecond Precision Machinery Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2021-11-16
Anticipated expiration: 2031-03-11

Abstract

The utility model relates to the technical field of hydraulic self-centering, in particular to a novel hydraulic self-centering center frame, which comprises a swing arm component, a shell component and a power component, wherein the swing arm component and the power component are respectively movably arranged at the upper end and the lower end of the shell component; the casing subassembly includes the installation shell, and head end notch and tail end notch have been seted up respectively to the upper and lower both ends mouth of installation shell, and the swing arm subassembly includes left swing arm and right swing arm, and the middle part of left swing arm and the mutual overlap of the middle part of right swing arm are the X style of calligraphy, and rotate through fixing bearing and connect, and the bottom of left swing arm and the bottom of right swing arm all rotate through the fixed axle and install the worm wheel, and power component includes pneumatic cylinder and toper worm, and the one end that the pneumatic cylinder was kept away from to the piston rod passes through push rod fixedly connected with toper worm, and toper worm meshes with the worm wheel mutually, the utility model relates to a novel hydraulic pressure is from centering centre frame, novel structure, and the flexible operation is convenient for adjust, satisfies modern novel automation machine accuse lathe production technique and mode.

Description

Novel hydraulic self-centering center frame

Technical Field

The utility model relates to a hydraulic pressure is from centering technical field, specifically is a novel hydraulic pressure is from centering centre frame.

Background

The machining of long workpieces on a lathe generally requires a center frame to support the front end of the workpiece, and the conventional center frame requires manual adjustment of a chuck to ensure that the center line of the excircle of the workpiece coincides with the cutting axis of the lathe, which is called centering. The traditional center frame is generally supported by two points or multiple points, and each support rod is manually adjusted by a technician so as to achieve the aim that a clamped workpiece is coaxial with the center line of the head and tail frames of the machine tool. The precision of the traditional manual adjustment is often dependent on subjective factors such as hand feeling and experience of technical workers, the flexibility of adjustment is low, the absolute positioning precision of single adjustment and the repeated positioning precision of multiple adjustments are low, and the traditional manual adjustment is more and more not suitable for the requirements of high efficiency and high precision of modern novel machine tools.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel hydraulic pressure is from centering centre frame to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the novel hydraulic self-centering center frame comprises a swing arm assembly, a shell assembly and a power assembly, wherein the swing arm assembly and the power assembly are respectively movably mounted at the upper end and the lower end of the shell assembly;

the shell component comprises an installation shell, a head end notch and a tail end notch are respectively formed in the upper end port and the lower end port of the installation shell, the swing arm component comprises a left swing arm and a right swing arm, the left swing arm and the right swing arm are installed in the installation shell by taking the central shaft of the installation shell as axial symmetry, the middle parts of the left swing arm and the right swing arm are mutually overlapped to form an X shape and are rotatably connected through a fixed bearing, the circle center of the fixed bearing is fixedly connected to the installation shell through a second bearing pin, the top end of the left swing arm and the top end of the right swing arm penetrate through the head end notch to extend to the outside of the top end of the installation shell, worm wheels are rotatably installed at the bottom end of the left swing arm and the bottom end of the right swing arm through fixed shafts, the power component comprises a hydraulic cylinder and a conical worm, one end of the hydraulic cylinder penetrates through a piston rod to the tail end notch, one end of the piston rod, which is far away from the hydraulic cylinder, is fixedly connected with a conical worm through a push rod, and the conical worm is meshed with the worm wheel.

Preferably, two sides of the installation shell are respectively distributed with one or more cylindrical pins, the cylindrical pin positioned on one side of the upper end of the installation shell is rotatably provided with a linkage plate, the linkage plate is provided with two cylindrical pins which are symmetrically arranged on the upper end inside the installation shell, the cylindrical pin positioned on one side of the lower end of the installation shell is rotatably provided with an arc return buckle, the arc return buckle is provided with two cylindrical pins which are symmetrically arranged on the lower end inside the installation shell, one end of the linkage plate, far away from the cylindrical pin, is respectively provided with a first sliding groove and a second sliding groove, and one end of the arc return buckle, far away from the cylindrical pin, is provided with an arc sliding groove.

Preferably, the position punishment on the upper side of the middle part of left swing arm and right swing arm is fixed with first stopper respectively, the middle part position punishment of left swing arm and right swing arm is fixed with the second stopper respectively, the middle part position on the lower side of left swing arm and right swing arm is fixed with the third stopper respectively, just first stopper and second stopper slide the joint respectively and are in inside first sliding tray and the second sliding tray, third stopper slide the joint and be in inside the arc sliding tray.

Preferably, the top end of the left swing arm and the top end of the right swing arm are respectively and rotatably connected with a rotating bearing through a first bearing pin, and the rotating bearing and the first bearing pin are respectively provided with two parts.

Preferably, the inside fixed mounting of installing shell has the fastening to strengthen the subassembly, the fastening is strengthened the subassembly and is included threaded rod, first damping spring and second damping spring, the threaded rod runs through in proper order the upper end of left side swing arm and the upper end of right swing arm extend to the outside of installing shell, just the both ends of threaded rod are all fixed through fastening nut on the installing shell, first damping spring has two, wears to establish respectively and is located the installing shell inner wall with between left side swing arm or the right swing arm the threaded rod, second damping spring wears to establish and is located between left side swing arm and the right swing arm on the threaded rod.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model relates to a novel hydraulic self-centering center frame, which drives a piston rod through a hydraulic cylinder, the piston rod drives a push rod at the end part to be pushed out along a tail end notch in a telescopic way, so that after a conical worm is meshed with the worm wheel, the worm wheel is pushed to be pushed in or pushed out along the axis direction of the installation shell, the opening and closing degree of a left swing arm and a right swing arm is changed, thereby realizing the clamping and fixing effect, simultaneously, one end of a linkage plate and an arc return buckle is respectively connected with the installation shell through a cylindrical pin in a rotating way, and the other end of the linkage plate and the other end of the arc return buckle are connected with the left swing arm and the right swing arm in a sliding way, so that a swing arm assembly is stable in structure and not easy to loosen, when the hydraulic cylinder drives the piston rod to push the conical worm to stretch, a first stopper, a second stopper and a third stopper respectively slide back and forth along a first sliding groove, a second sliding groove and an arc sliding groove, when keeping the device stable in structure, effectively increase the device flexibility of operation, the device novel structure, the operation of being convenient for satisfies multiple modern novel digit control machine tool processing demand, and the suitability is wider.

Drawings

Fig. 1 is a front view of a novel hydraulic self-centering center frame of the present invention;

fig. 2 is a front view of the internal structure of a novel hydraulic self-centering center frame of the present invention;

fig. 3 is the utility model relates to a novel hydraulic pressure is from centering centre frame inner structure back of body view.

In the figure:

1. a rotating bearing; 101. a first bearing pin; 2. a swing arm assembly; 201. a left swing arm; 202. a right swing arm; 203. a first stopper; 204. a second limiting block; 205. a third limiting block; 3. fastening the reinforcing component; 301. a threaded rod; 302. fastening a nut; 303. a first damping spring; 304. a second damping spring; 4. a housing assembly; 401. mounting a shell; 402. a head end notch; 403. a cylindrical pin; 404. a tail end notch; 5. a power assembly; 501. a hydraulic cylinder; 502. a piston rod; 503. a push rod; 504. a conical worm; 6. a worm gear; 601. a fixed shaft; 7. fixing the bearing; 701. a second bearing pin; 8. a linkage plate; 801. a first sliding groove; 802. a second sliding groove; 9. an arc-shaped return buckle; 901. an arc-shaped sliding groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a preferred embodiment of the present invention is a novel hydraulic self-centering center frame, which includes a swing arm assembly 2, a housing assembly 4 and a power assembly 5, wherein the swing arm assembly 2 and the power assembly 5 are movably mounted at the upper and lower ends of the housing assembly 4 respectively;

the shell assembly 4 comprises a mounting shell 401, the upper and lower ports of the mounting shell 401 are respectively provided with a head end notch 402 and a tail end notch 404, the swing arm assembly 2 comprises a left swing arm 201 and a right swing arm 202, the left swing arm 201 and the right swing arm 202 are mounted inside the mounting shell 401 with the central axis of the mounting shell 401 as the axis symmetry, the middle part of the left swing arm 201 and the middle part of the right swing arm 202 are overlapped and form an X shape and are rotatably connected through a fixed bearing 7, the circle center of the fixed bearing 7 is fixedly connected to the mounting shell 401 through a second bearing pin 701, the top end of the left swing arm 201 and the top end of the right swing arm 202 both pass through the head end notch 402 and extend to the outside of the top end of the mounting shell 401, the bottom end of the left swing arm 201 and the bottom end of the right swing arm 202 are rotatably mounted with a worm wheel 6 through a fixed shaft 601, the power assembly 5 comprises a hydraulic cylinder 501 and a conical worm 504, one end of the hydraulic cylinder 501 passes through the tail end notch 404 through a piston rod 502, the end of the piston rod 502 far away from the hydraulic cylinder 501 is fixedly connected with a conical worm 504 through a push rod 503, and the conical worm 504 is meshed with the worm wheel 6.

Two sides of the installation shell 401 are respectively distributed with one or more cylindrical pins 403, the cylindrical pins 403 positioned at one side of the upper end of the installation shell 401 are rotatably provided with a linkage plate 8, and the linkage plate 8 is provided with two, the two arc-shaped return buckles 9 are rotatably arranged on the upper end of the inner part of the mounting shell 401 by the cylindrical pin 403 positioned on one side of the lower end of the mounting shell 401, the two arc-shaped return buckles 9 are provided, symmetrically arranged at the lower end of the inner part of the installation shell 401, a first sliding groove 801 and a second sliding groove 802 are respectively arranged at one end of the linkage plate 8 far away from the cylindrical pin 403, an arc-shaped sliding groove 901 is arranged at one end of the arc-shaped return buckle 9 far away from the cylindrical pin 403, one ends of the linkage plate 8 and the arc-shaped return buckle 9 are respectively and rotatably connected with the mounting shell 401 through a cylindrical pin 403, and the other ends are respectively and slidably clamped with the left swing arm 201 and the right swing arm 202, so that the swing arm assembly 2 is stable in structure and not easy to loosen; the upper middle positions of the left swing arm 201 and the right swing arm 202 are respectively fixed with a first limiting block 203, the middle positions of the left swing arm 201 and the right swing arm 202 are respectively fixed with a second limiting block 204, the lower middle positions of the left swing arm 201 and the right swing arm 202 are respectively fixed with a third limiting block 205, the first limiting block 203 and the second limiting block 204 are respectively clamped in the first sliding groove 801 and the second sliding groove 802 in a sliding manner, and the third limiting block 205 is clamped in the arc-shaped sliding groove 901 in a sliding manner, so that the structural stability and the operation convenience are improved, and the swing arm assembly 2 can be opened and closed in a crossed manner and is smooth and flexible in the installation shell 401; the top end of the left swing arm 201 and the top end of the right swing arm 202 are respectively and rotatably connected with a rotating bearing 1 through a first bearing pin 101, and the rotating bearing 1 and the first bearing pin 101 are provided with two parts, so that a workpiece to be processed can be clamped and fixed smoothly, the convenience and the rapidness of operation are increased, the workpiece to be processed is effectively prevented from being scratched, and the yield is prevented from being reduced; the fastening reinforcing component 3 is fixedly arranged inside the mounting shell 401, the fastening reinforcing component 3 comprises a threaded rod 301, a first damping spring 303 and a second damping spring 304, the threaded rod 301 sequentially penetrates through the upper ends of the left swing arm 201 and the right swing arm 202 and extends to the outside of the mounting shell 401, two ends of the threaded rod 301 are fixed on the installation shell 401 through fastening nuts 302, two first damping springs 303 are respectively arranged on the threaded rod 301 between the inner wall of the installation shell 401 and the left swing arm 201 or the right swing arm 202 in a penetrating way, a second damping spring 304 is arranged on the threaded rod 301 between the left swing arm 201 and the right swing arm 202 in a penetrating way, when the left and

right swing arms

201 and 202 are expanded along the threaded rod 301 inside the mounting case 401, the tension between the left swing arm 201, the right swing arm 202 and the mounting shell 401 is increased through the first damping spring 303 and the second damping spring 304, and the stability and the toughness of the device structure are greatly improved.

The utility model discloses a work flow and principle thereof, through pneumatic cylinder 501 drive piston rod 502, piston rod 502 drives the push rod 503 of tip and pushes out to the inside flexible propulsion of installation shell 401 along tail end notch 404, thereby make behind toper worm 504 and the meshing of worm wheel 6, promote worm wheel 6 and advance or release along installation shell 401 axle center direction, make the degree of opening and shutting of left swing arm 201 and right swing arm 202 change, thereby realize centre gripping fixed action, and simultaneously, the one end of detaining 9 is connected with installation shell 401 rotation respectively with linkage plate 8 and arc return stroke through cylindric lock 403, and linkage plate 8 and arc return stroke detain 9 other end and left swing arm 201 and right swing arm 202 slip looks joint, make swing arm subassembly 2 stable in structure, be difficult for becoming flexible, when pneumatic cylinder 501 drive piston rod 502 promoted toper worm 504 flexible, first stopper 203, second stopper 204 and third stopper 205 are respectively along first sliding tray 801, the sliding tray is opened to the right swing arm 202 mutually to the joint, make swing arm subassembly 2 stable in structure, not hard up, Second sliding tray 802 and arc sliding tray 901 make a round trip to slide, when keeping the device stable in structure, effectively increase the device flexibility of operation, the device novel structure, the operation of being convenient for satisfies multiple modern novel digit control machine tool processing demand, and the suitability is wider.

The above description is for further details of the present invention, and it is not assumed that the embodiments of the present invention are limited to these descriptions, and it is obvious to those skilled in the art that the present invention can be implemented by a plurality of simple deductions or replacements without departing from the concept of the present invention, and all should be considered as belonging to the protection scope defined by the claims submitted by the present invention.

Claims

1. The utility model provides a novel hydraulic pressure is from centering centre frame which characterized in that: the swing arm assembly comprises a swing arm assembly (2), a shell assembly (4) and a power assembly (5), wherein the swing arm assembly (2) and the power assembly (5) are movably mounted at the upper end and the lower end of the shell assembly (4) respectively;

the shell assembly (4) comprises an installation shell (401), a head end notch (402) and a tail end notch (404) are respectively formed in the upper end port and the lower end port of the installation shell (401), the swing arm assembly (2) comprises a left swing arm (201) and a right swing arm (202), the left swing arm (201) and the right swing arm (202) are installed inside the installation shell (401) by taking the central shaft of the installation shell (401) as axial symmetry, the middle parts of the left swing arm (201) and the right swing arm (202) are overlapped and in an X shape and are rotatably connected through a fixed bearing (7), the circle center of the fixed bearing (7) is fixedly connected to the installation shell (401) through a second bearing pin (701), and the top end of the left swing arm (201) and the top end of the right swing arm (202) penetrate through the head end notch (402) and extend to the outside of the top end of the installation shell (401), and the bottom of left side swing arm (201) and the bottom of right swing arm (202) all rotate through fixed axle (601) and install worm wheel (6), power component (5) are including pneumatic cylinder (501) and toper worm (504), the one end of pneumatic cylinder (501) is passed through piston rod (502) tail end notch (404), piston rod (502) are kept away from the one end of pneumatic cylinder (501) is passed through push rod (503) fixedly connected with toper worm (504), just toper worm (504) with worm wheel (6) mesh mutually.

2. The novel hydraulic self-centering steady rest according to claim 1, characterized in that: the installation structure is characterized in that a plurality of cylindrical pins (403) are respectively distributed on two sides of the installation shell (401), a linkage plate (8) is rotatably installed on the cylindrical pins (403) located on one side of the upper end of the installation shell (401), the linkage plate (8) is provided with two pieces, the linkage plate is symmetrically installed on the upper end inside the installation shell (401), an arc return buckle (9) is rotatably installed on the cylindrical pins (403) located on one side of the lower end of the installation shell (401), the arc return buckle (9) is provided with two pieces, the linkage plate is symmetrically installed on the lower end inside the installation shell (401), one end, far away from the cylindrical pins (403), of the linkage plate (8) is respectively provided with a first sliding groove (801) and a second sliding groove (802), and one end, far away from the cylindrical pins (403), of the arc return buckle (9) is provided with an arc sliding groove (901).

3. The novel hydraulic self-centering steady rest according to claim 2, characterized in that: the middle upper positions of the left swing arm (201) and the right swing arm (202) are respectively fixed with a first limiting block (203), the middle positions of the left swing arm (201) and the right swing arm (202) are respectively fixed with a second limiting block (204), the middle lower positions of the left swing arm (201) and the right swing arm (202) are respectively fixed with a third limiting block (205), the first limiting block (203) and the second limiting block (204) are respectively in sliding clamping connection with the inner portions of the first sliding groove (801) and the second sliding groove (802), and the third limiting block (205) is in sliding clamping connection with the inner portions of the arc-shaped sliding grooves (901).

4. The novel hydraulic self-centering steady rest according to claim 1, characterized in that: the top of left side swing arm (201) and the top of right swing arm (202) rotate through first bearing pin (101) respectively and are connected with rolling bearing (1), rolling bearing (1) and first bearing pin (101) all have two.

5. The novel hydraulic self-centering steady rest according to claim 1, characterized in that: the inside fixed mounting of installing shell (401) has the fastening to strengthen subassembly (3), the fastening is strengthened subassembly (3) and is included threaded rod (301), first damping spring (303) and second damping spring (304), threaded rod (301) runs through in proper order the upper end of left swing arm (201) and the upper end of right swing arm (202) extend to the outside of installing shell (401), just the both ends of threaded rod (301) are all fixed through fastening nut (302) on installing shell (401), first damping spring (303) have two, wear to establish respectively and are located installing shell (401) inner wall with between left swing arm (201) or right swing arm (202) threaded rod (301), second damping spring (304) wear to establish and are located between left swing arm (201) and right swing arm (202) on threaded rod (301).