CN212761186U

CN212761186U - Internal expanding sleeve clamp with good clamping effect

Info

Publication number: CN212761186U
Application number: CN202021640361.XU
Authority: CN
Inventors: 于鹏
Original assignee: Yantai Mingdong Metal Manufacturing Co ltd
Current assignee: Yantai Mingdong Metal Manufacturing Co ltd
Priority date: 2020-08-08
Filing date: 2020-08-08
Publication date: 2021-03-23
Anticipated expiration: 2030-08-08

Abstract

The utility model discloses an internal expansion sleeve clamp with good clamping effect, which comprises a hydraulic chuck body, wherein a hydraulic mechanism is fixedly connected inside the hydraulic chuck body, an expansion sleeve seat is fixedly connected at the right end of the hydraulic chuck body, a thread is arranged at the right end of the expansion sleeve seat, an external expansion sleeve is in threaded connection with the inner wall of the expansion sleeve seat, the inner wall of the external expansion sleeve is movably connected with an inner rod of the expansion sleeve, the inner rod of the expansion sleeve moves leftwards under the common limit of a clamping block and an elastic snap spring, so that the external expansion sleeve is extruded by the inner rod of the conical expansion sleeve, the external expansion sleeve expands along the direction far away from the external expansion sleeve groove, a workpiece is clamped from the inside to the outside, the inner wall of the workpiece is large in stress area, the clamping is firmer, the rear thimble is aligned to the top groove to be dead for the overlong workpiece, the positioning is quicker and more accurate, a cutter cannot be vibrated, and the workpiece is opened from the inside, the stress of each place is uniform, and the expansion sleeve inner core is automatically concentric, so that the effect of good clamping effect is achieved.

Description

Internal expanding sleeve clamp with good clamping effect

Technical Field

The utility model belongs to the technical field of anchor clamps, concretely relates to effectual internal expanding cover anchor clamps of centre gripping.

Background

The ventilation pipe is a hollow pipe used for ventilation and is mostly circular or square, the plate, the section bar and other main finished product materials used for manufacturing and installing the ventilation pipe are required to meet the regulations of the national current standard of design and related products, and are proved by applying factory inspection, the materials are required to be checked and accepted according to the national current relevant standard when entering a field, the external thread and the front end face of the ventilation pipe can be machined by using a lathe when the ventilation pipe is machined, but most of the existing clamping modes adopt hydraulic chuck inner hole clamping or a method of clamping for multiple times, and the hydraulic chuck is a clamp controlled by a hydraulic system and is used for clamping a workpiece on a main shaft of a numerical control lathe.

However, the traditional hydraulic chuck has the advantages that the stress point of the clamping mode is small, the problem that the thread of the vibrating cutter is unqualified due to overlong thread processing is easily caused, the clamping is inaccurate, the turning is easy to deviate, and the cutter is easy to collapse.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an effectual internal expanding cover anchor clamps of centre gripping to propose the current effectual internal expanding cover anchor clamps of centre gripping in solving above-mentioned background art in the use, because this kind of centre gripping mode stress point of hydraulic chuck is little, the unqualified problem of sword screw thread that shakes appears easily in the screw processing overlength, and the inaccurate easy car of centre gripping is inclined to one side moreover, and the blade collapses easily, thereby it is big to lead to the clamping error, and the clamping effect is poor, the not high problem of work piece quality.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an effectual internal expanding cover anchor clamps of centre gripping, includes the hydraulic chuck body, the inside fixedly connected with hydraulic pressure mechanism of hydraulic chuck body, the right-hand member fixedly connected with of hydraulic chuck body rises the cover seat, the right-hand member of rising the cover seat has seted up the screw thread, the inner wall threaded connection of rising the cover seat has the external expanding cover, the inner wall swing joint of external expanding cover has the cover pole that rises, the outer wall swing joint of external expanding cover has the work piece, the inner wall swing joint of the cover pole that rises has the cover inner core that rises, the left end of the cover inner core that rises and the right-hand member fixed connection of hydraulic pressure mechanism, the internal wall of external expanding cover has seted up the external expanding cover groove, the external expanding cover separates into first external expanding cover, second external expanding cover through the external expanding cover groove that sets up.

Preferably, the inner rod groove has been seted up to the inner wall of the cover pole that rises, the cover pole that rises separates into the cover pole that rises through the inner rod groove that sets up, the second cover pole that rises, the spacing groove has been seted up to the right-hand member of the cover pole outer wall that rises, the elastic jump ring of inner wall joint in spacing groove.

Preferably, the right end of the inner core of the expansion sleeve is fixedly connected with a fixture block, the outer wall of the fixture block is clamped with the right end of the inner rod of the expansion sleeve, and the right end of the fixture block is provided with a top groove.

Preferably, the inner wall fixedly connected with location ear of work piece, the draw-in groove has been seted up to the outer wall of the cover that rises outward, the work piece is through the inner wall joint of the location ear that sets up and draw-in groove.

Preferably, the inner rod of the expansion sleeve is conical, and the inner wall of the outer expansion sleeve is provided with a conical groove matched with the inner rod of the expansion sleeve.

Preferably, the shape of the top groove is conical.

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

1. the hydraulic mechanism that sets up drives the cover inner core that rises and contracts left, under the common spacing through fixture block and elasticity jump ring, make the cover inner rod that rises move left, thereby through the outer cover that rises of the extrusion of conical cover inner rod that rises, make the cover that rises outward expand along the direction of keeping away from the cover groove that rises outward, from inside to outside press from both sides tight work piece, because it is big to the inner wall of work piece all lifting surface, make the more firm of clamping, and to the work piece of overlength, aim at the thimble behind the lathe and die the apical trough top, the toper structure of apical trough enables the location more accurate fast, and can not shake the sword, rise by inside during the location, make each local atress even, automatic concentric with the cover inner core that rises when pressing from both sides tightly, in order to reach the effectual effect of centre gripping.

2. The inner core of the expansion sleeve is controlled by the arranged hydraulic mechanism to extend rightwards, the fixture block is separated from the inside of the inner rod of the expansion sleeve and receives inward tightening force of the elastic clamp spring, so that the inner rod of the expansion sleeve contracts along the inner rod groove, the outer diameter of the outer expansion sleeve is smaller than the inner diameter of a workpiece under the elastic action, the workpiece can be conveniently taken out from the right end, and the effects of convenience in loading and unloading and high working efficiency are achieved.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic view of the structure of the main view direction of the present invention;

fig. 3 is a schematic view of the structure at a-a of the present invention.

In the figure: 1. a hydraulic chuck body; 2. a hydraulic mechanism; 3. a sleeve expanding seat; 4. an external expansion sleeve; 5. an inner rod of the expansion sleeve; 6. an inner core of the expansion sleeve; 7. a workpiece; 8. an outer expansion sleeve groove; 9. an inner rod groove; 10. a limiting groove; 11. an elastic clamp spring; 12. a clamping block; 13. a top groove; 14. a card slot; 15. positioning the ear; 16. a first outer swelling sleeve; 17. a second outer expanding sleeve; 18. a first expansion sleeve inner rod; 19. and a second expansion sleeve inner rod.

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, the present invention provides a technical solution: the utility model provides an effectual internal expanding cover anchor clamps of centre gripping, including hydraulic pressure chuck body 1, the inside fixedly connected with hydraulic pressure mechanism 2 of hydraulic pressure chuck body 1, the right-hand member fixedly connected with of hydraulic pressure chuck body 1 rises cover seat 3, the right-hand member of cover seat 3 that rises is seted up threadedly, the inner wall threaded connection of cover seat 3 that rises has external expanding cover 4, the inner wall swing joint of external expanding cover 4 has the cover interior pole 5 that rises, the outer wall swing joint of cover 4 that rises has work piece 7, the inner wall swing joint of the cover interior pole 5 that rises has cover inner core 6 that rises, the left end of cover inner core 6 that rises and the right-hand member fixed connection of hydraulic pressure mechanism 2, the cover groove 8 that rises outward has been seted up to the inner wall of cover 4 that rises outward, the cover 4 that rises outward separates into first cover 16 that rises outward, second cover 17.

In the embodiment, the inner core 6 of the expansion sleeve is driven by the hydraulic mechanism 2 to shrink leftwards, so that the inner rod 5 of the expansion sleeve moves leftwards, the conical inner rod 5 of the expansion sleeve extrudes the outer expansion sleeve 4, the outer expansion sleeve 4 expands along the direction far away from the outer expansion sleeve groove 8, and the workpiece 7 is clamped from inside to outside.

Specifically, an inner rod groove 9 is formed in the inner wall of an inner rod 5 of the expansion sleeve, the inner rod 5 of the expansion sleeve is separated into a first inner rod 18 of the expansion sleeve and a second inner rod 19 of the expansion sleeve through the inner rod groove 9, a limiting groove 10 is formed in the right end of the outer wall of the inner rod 5 of the expansion sleeve, and an elastic clamp spring 11 is clamped on the inner wall of the limiting groove 10.

In this embodiment, when the workpiece 7 needs to be dismounted after the machining, the hydraulic mechanism 2 controls the inner core 6 of the expansion sleeve to extend rightwards, the clamping block 12 is separated from the inside of the inner rod 5 of the expansion sleeve and is stressed by the inward tightening force of the elastic clamp spring 11, so that the inner rod 5 of the expansion sleeve contracts along the inner rod groove 9, and the outer diameter of the outer expansion sleeve 4 is smaller than the inner diameter of the workpiece 7 under the elastic action, so that the effects of convenience in mounting and dismounting and high working efficiency are achieved.

Specifically, the right end of the expansion sleeve inner core 6 is fixedly connected with a fixture block 12, the outer wall of the fixture block 12 is clamped with the right end of the expansion sleeve inner rod 5, and the right end of the fixture block 12 is provided with a top groove 13.

In this embodiment, to the work piece 7 of overlength, aim at the thimble behind the lathe and aim at the overhead tank 13 dieback, the toper structure of overhead tank 13 enables the location more accurate fast, and can not shake the sword.

Specifically, the inner wall of the workpiece 7 is fixedly connected with a positioning lug 15, the outer wall of the outer expansion sleeve 4 is provided with a clamping groove 14, and the workpiece 7 is clamped with the inner wall of the clamping groove 14 through the arranged positioning lug 15.

In this embodiment, the workpiece 7 is mounted on the outer expanding sleeve 4, and the positioning lug 15 in the workpiece 7 is connected with the clamping groove 14 on the inner rod 5 of the expanding sleeve.

Specifically, the inner rod 5 of the expansion sleeve is conical, and the inner wall of the outer expansion sleeve 4 is provided with a conical groove matched with the inner rod 5 of the expansion sleeve.

In this embodiment, the tapered groove enables the expanding sleeve 4 to expand along the direction away from the expanding sleeve groove 8, so as to clamp the workpiece 7 from inside to outside, and the positioning is more accurate.

Specifically, the top groove 13 is tapered in shape.

In this embodiment, the conical structure of the top groove 13 enables the positioning to be faster and more accurate, and the cutter cannot vibrate.

The utility model discloses a theory of operation and use flow: the workpiece 7 is arranged on the outer expansion sleeve 4, the positioning lug 15 in the workpiece 7 is connected with the clamping groove 14 on the inner rod 5 of the expansion sleeve, the hydraulic mechanism 2 is started, the hydraulic mechanism 2 drives the inner core 6 of the expansion sleeve to shrink leftwards, the inner rod 5 of the expansion sleeve moves leftwards through the common limit of the clamping block 12 and the elastic clamp spring 11, so that the outer expansion sleeve 4 is extruded by the conical inner rod 5 of the expansion sleeve, the outer expansion sleeve 4 expands along the direction far away from the outer expansion sleeve groove 8, and the workpiece 7 is clamped from inside to outside, because the stress area on the inner wall of the workpiece 7 is large, the clamping is firmer, for the overlong workpiece 7, the rear thimble of the lathe is aligned with the top groove 13 to be dead against, the conical structure of the top groove 13 can enable the positioning to be quicker and more accurate, the cutter cannot be vibrated, the workpiece is expanded from inside to outside during the positioning, the stress of all places is uniform, and the workpiece is automatically concentric with the inner core 6 of, when the workpiece 7 needs to be dismounted after machining, the hydraulic mechanism 2 controls the expansion sleeve inner core 6 to extend rightwards, the fixture block 12 is separated from the inside of the expansion sleeve inner rod 5 and is stressed by the inward tightening force of the elastic clamp spring 11, so that the expansion sleeve inner rod 5 contracts along the inner rod groove 9, the outer diameter of the expansion sleeve 4 is smaller than the inner diameter of the workpiece 7 under the elastic action, the workpiece 7 can be conveniently taken out from the right end, and the effects of convenience in mounting and dismounting and high working efficiency are achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an effectual internal expanding of centre gripping overlaps anchor clamps, includes hydraulic chuck body (1), its characterized in that: the hydraulic chuck is characterized in that a hydraulic mechanism (2) is fixedly connected to the inside of the hydraulic chuck body (1), a sleeve expanding seat (3) is fixedly connected to the right end of the hydraulic chuck body (1), threads are formed in the right end of the sleeve expanding seat (3), an outer expanding sleeve (4) is connected to the inner wall of the sleeve expanding seat (3) in a threaded mode, an inner expanding sleeve rod (5) is movably connected to the inner wall of the outer expanding sleeve (4), a workpiece (7) is movably connected to the outer wall of the outer expanding sleeve (4), an inner expanding sleeve core (6) is movably connected to the inner wall of the inner expanding sleeve rod (5), the left end of the inner expanding sleeve core (6) is fixedly connected to the right end of the hydraulic mechanism (2), an outer expanding sleeve groove (8) is formed in the inner wall of the outer expanding sleeve (4), and the outer expanding sleeve (4) is separated into a first outer expanding sleeve (16) and a second outer expanding sleeve (17) through.

2. The internal expanding sleeve clamp with good clamping effect as claimed in claim 1, is characterized in that: inner rod groove (9) have been seted up to the inner wall of pole (5) in the cover that rises, the pole (5) in the cover that rises separates into pole (18) in the first cover that rises, pole (19) in the second cover that rises through inner rod groove (9) that set up, spacing groove (10) have been seted up to the right-hand member of the pole (5) outer wall in the cover that rises, the elastic jump ring (11) of inner wall joint of spacing groove (10).

3. The internal expanding sleeve clamp with good clamping effect as claimed in claim 1, is characterized in that: the right end of the expansion sleeve inner core (6) is fixedly connected with a clamping block (12), the outer wall of the clamping block (12) is clamped with the right end of the expansion sleeve inner rod (5), and the right end of the clamping block (12) is provided with a top groove (13).

4. The internal expanding sleeve clamp with good clamping effect as claimed in claim 1, is characterized in that: the inner wall fixedly connected with location ear (15) of work piece (7), draw-in groove (14) have been seted up to the outer wall of the cover that rises outward (4), work piece (7) are through the inner wall joint of location ear (15) and draw-in groove (14) that set up.

5. The internal expanding sleeve clamp with good clamping effect as claimed in claim 1, is characterized in that: the inner rod (5) of the expansion sleeve is conical, and a conical groove matched with the inner rod (5) of the expansion sleeve is formed in the inner wall of the outer expansion sleeve (4).

6. The internal expanding sleeve clamp with good clamping effect as claimed in claim 3, wherein: the shape of the top groove (13) is conical.