CN201702404U

CN201702404U - Expansion sleeve fixture

Info

Publication number: CN201702404U
Application number: CN2010201407421U
Authority: CN
Inventors: 牟燕云
Original assignee: CHANGZHOU BEUT MACHINERY MANUFACTURE Co Ltd
Current assignee: CHANGZHOU BEUT MACHINERY MANUFACTURE Co Ltd
Priority date: 2010-03-25
Filing date: 2010-03-25
Publication date: 2011-01-12
Anticipated expiration: 2020-03-25

Abstract

The utility model discloses an expansion sleeve fixture. A rear piston rod of a piston is provided with a first airway and a second airway which are respectively communicated with a first chamber and a second chamber, a front piston rod of the piston is fixedly connected with a pull rod or integrated with the same, the outer side of a front cover is fixedly connected with a taper sleeve, the pull rod fittingly penetrates through an inner hole of the taper sleeve loosely, the taper sleeve is provided with a radial through hole, the periphery of the taper sleeve is sleeved with an expansion sleeve with the taper matching with that of the taper sleeve, the expansion sleeve is provided with a pin hole, the pull rod is fixed with a pin shaft, the pin shaft passes through the through hole of the taper sleeve, and ends of the pin shaft are inserted in the pin hole. When the pull rod reciprocates, shaft sections of the pin shaft extending out of the pull rod and the pin hole reciprocate in the through hole, and the ends of the pin shaft drive the expansion sleeve to move back and forth. The expansion sleeve fixture is fine in sealing effect, large in clamping force and high in using efficiency without air leakage.

Description

The ringfeder anchor clamps

Technical field

The utility model relates to a kind of lathe with the internal clamp that rises.

Background technology

Existing ringfeder anchor clamps, the whole rod-pulling type structure that adopts is installed trouble, gas leakage and is needed artificial the clamping, and processing work efficient is low.

Summary of the invention

The purpose of this utility model is to provide a kind of good sealing effect, air tight, clamping force is big, service efficiency is high ringfeder anchor clamps.

In order to achieve the above object, the technical solution of the utility model is: a kind of ringfeder anchor clamps, comprise shell, piston and protecgulum, piston is cased, form first chamber between piston rear portion and the shell, form second chamber between piston front portion and the protecgulum, shell is fixedlyed connected with protecgulum, the periphery of the front piston rod of piston cooperates with the mesopore slipper seal of protecgulum, the periphery of the rear piston bar of piston cooperates with the mesopore slipper seal of the end plate of shell, the rear piston bar of piston is provided with first air flue and second air flue, and first air flue communicates with first chamber, and second air flue communicates with second chamber; The front piston rod of piston is fixedlyed connected with pull bar or is made one; The outside of protecgulum is fixedly connected with tapered sleeve, pass the tapered sleeve endoporus to the pull bar loose fit, and tapered sleeve is provided with radial direction through hole; The tapered sleeve periphery is set with the ringfeder that is complementary with its tapering, has pin-and-hole on the ringfeder, be fixed with bearing pin on the pull bar, bearing pin passes the through hole and the end of tapered sleeve and inserts in the pin-and-hole, when pull bar moves back and forth, the shaft part that exposes pull bar and pin-and-hole of bearing pin moves back and forth in through hole, and the end of bearing pin then drives ringfeder and moves back and forth.

When the front piston rod of described piston was fixedlyed connected with pull bar, the front piston rod of piston had screwed hole, and the external screw thread of back end of tie rod is threaded with this screwed hole.

Between the front piston rod of described piston and the mesopore of protecgulum sealing ring is housed, between the mesopore of the rear piston bar of piston and the end plate of shell sealing ring is housed.

The periphery of described ringfeder also is provided with centring ring, and centring ring is fixedlyed connected with protecgulum.

Described pull bar front end is provided with external screw thread, and nut is housed on the external screw thread, and nut is pressed on the ringfeder front end with packing ring.

Be connected with first ventilating joint and second ventilating joint on the rear piston bar of described piston, first air flue and second air flue communicate with first ventilating joint and second ventilating joint respectively.

After adopting said structure, the front piston rod of piston also is fixedly connected with pull bar or makes one with pull bar; The outside of protecgulum is fixedly connected with tapered sleeve, pass the tapered sleeve endoporus to the pull bar loose fit, and tapered sleeve is provided with radial direction through hole; The tapered sleeve periphery is set with the ringfeder that is complementary with its tapering, has pin-and-hole on the ringfeder, be fixed with bearing pin on the pull bar, bearing pin passes the through hole and the end of tapered sleeve and inserts in the pin-and-hole, when pull bar moves back and forth, the shaft part that exposes pull bar and pin-and-hole of bearing pin moves back and forth in through hole, and the bearing pin end then drives ringfeder and moves back and forth.Ringfeder anchor clamps good sealing effect of the present utility model, air tight, clamping force is big, service efficiency is high.

Description of drawings

The embodiment that provides below in conjunction with accompanying drawing is described in further detail the utility model.

Fig. 1 is a kind of structural representation of the present utility model;

Fig. 2 is an another kind of structural representation of the present utility model.

The specific embodiment

As Fig. 1, shown in 2, a kind of ringfeder anchor clamps of the present utility model, comprise shell 3, piston 4 and protecgulum 5, piston 4 is contained in the shell 3, form first chamber 7 between piston 4 rear portions and the shell 3, form second chamber 8 between piston 4 front portions and the protecgulum 5, shell 3 is fixedlyed connected with protecgulum 5, the periphery of the front piston rod 4-3 of piston 4 cooperates with the mesopore 5-1 slipper seal of protecgulum 5, the periphery of the rear piston bar 4-4 of piston 4 cooperates with the mesopore 3-1-1 slipper seal of the end plate 3-1 of shell 3, the rear piston bar 4-4 of piston 4 is provided with the first air flue 4-1 and the second air flue 4-2, and the first air flue 4-1 communicates with first chamber 7, and the second air flue 4-2 communicates with second chamber 8; The front piston rod 4-3 of piston 4 is fixedlyed connected with pull bar 6 or is made one; The outside of protecgulum 5 is fixedly connected with tapered sleeve 1, pass tapered sleeve 1 endoporus to pull bar 6 loose fits, and tapered sleeve 1 is provided with radial direction through hole 1-1; Tapered sleeve 6 peripheries are set with the ringfeder 2 that is complementary with its tapering, has pin-and-hole 2-1 on the ringfeder 2, be fixed with bearing pin 9 on the pull bar 6, bearing pin 9 passes the through hole 1-1 and the end of tapered sleeve 1 and inserts among the pin-and-hole 2-1, when pull bar 6 moves back and forth, the shaft part that exposes pull bar 6 and pin-and-hole 2-1 of bearing pin 9 moves back and forth in through hole 1-1, and the end of bearing pin 9 then drives ringfeder 2 and moves back and forth.

As shown in Figure 1, 2, when the front piston rod 4-3 of described piston 4 was fixedlyed connected with pull bar 6, the front piston rod 4-3 of piston 4 had screwed hole 4-3-1, and the external screw thread of pull bar 6 rear ends is threaded with this screwed hole 4-3-1.

As shown in Figure 1, 2,, between the mesopore 5-1 of the front piston rod 4-3 of described piston 4 and protecgulum 5 sealing ring 10 is housed, between the mesopore 3-1-1 of the rear piston bar 4-4 of piston 4 and the end plate 3-1 of shell 3 sealing ring 11 is housed in order to guarantee sealing.

As shown in Figure 1, 2, for the ease of clamping thin wall cylinder part, the periphery of described ringfeder 2 also is provided with centring ring 12, and centring ring 12 is fixedlyed connected with protecgulum 5.

As shown in Figure 1, 2, described pull bar 6 front ends are provided with external screw thread 6-1, and nut 14 is housed on the external screw thread 6-1, and nut 14 is pressed on ringfeder 2 front ends with packing ring 13, and ringfeder 2 is just synchronous with the motion maintenance of pull bar 6 like this.

As shown in Figure 1, 2, convenient for air inlet, be connected with first ventilating joint 15 and second ventilating joint, 16, the first air flue 4-1 and the second air flue 4-2 on the rear piston bar 4-4 of described piston 4 and communicate with first ventilating joint 15 and second ventilating joint 16 respectively.

Claims

1. ringfeder anchor clamps, comprise shell (3), piston (4) and protecgulum (5), piston (4) is contained in the shell (3), form first chamber (7) between piston (4) rear portion and the shell (3), form second chamber (8) between piston (4) front portion and the protecgulum (5), shell (3) is fixedlyed connected with protecgulum (5), the periphery of the front piston rod (4-3) of piston (4) cooperates with mesopore (5-1) slipper seal of protecgulum (5), the periphery of the rear piston bar (4-4) of piston (4) cooperates with mesopore (3-1-1) slipper seal of the end plate (3-1) of shell (3), it is characterized in that:

The rear piston bar (4-4) of a, piston (4) is provided with first air flue (4-1) and second air flue (4-2), and first air flue (4-1) communicates with first chamber (7), and second air flue (4-2) communicates with second chamber (8);

The front piston rod (4-3) of b, piston (4) is fixedlyed connected with pull bar (6) or is made one;

The outside of c, protecgulum (5) is fixedly connected with tapered sleeve (1), pass tapered sleeve (1) endoporus to pull bar (6) loose fit, and tapered sleeve (1) is provided with radial direction through hole (1-1);

D, tapered sleeve (6) periphery are set with the ringfeder (2) that is complementary with its tapering, has pin-and-hole (2-1) on the ringfeder (2), be fixed with bearing pin (9) on the pull bar (6), bearing pin (9) passes the through hole (1-1) and the end of tapered sleeve (1) and inserts in the pin-and-hole (2-1), when pull bar (6) moves back and forth, the shaft part that exposes pull bar (6) and pin-and-hole (2-1) of bearing pin (9) moves back and forth in through hole (1-1), and the end of bearing pin (9) then drives ringfeder (2) and moves back and forth.

2. ringfeder anchor clamps according to claim 1, it is characterized in that: the front piston rod (4-3) of described piston (4) and pull bar (6) are when fixedlying connected, the front piston rod (4-3) of piston (4) has screwed hole (4-3-1), and the external screw thread of pull bar (6) rear end is threaded with this screwed hole (4-3-1).

3. ringfeder anchor clamps according to claim 1, it is characterized in that: between the front piston rod (4-3) of described piston (4) and the mesopore (5-1) of protecgulum (5) sealing ring (10) is housed, between the mesopore (3-1-1) of the rear piston bar (4-4) of piston (4) and the end plate (3-1) of shell (3) sealing ring (11) is housed.

4. according to claim 1 or 2 or 3 described ringfeder anchor clamps, it is characterized in that: the periphery of described ringfeder (2) also is provided with centring ring (12), and centring ring (12) is fixedlyed connected with protecgulum (5).

5. ringfeder anchor clamps according to claim 1 is characterized in that: described pull bar (6) front end is provided with external screw thread (6-1), and nut (14) is housed on the external screw thread (6-1), and nut (14) is pressed on ringfeder (2) front end with packing ring (13).

6. ringfeder anchor clamps according to claim 1, it is characterized in that: be connected with first ventilating joint (15) and second ventilating joint (16) on the rear piston bar (4-4) of described piston (4), first air flue (4-1) and second air flue (4-2) communicate with first ventilating joint (15) and second ventilating joint (16) respectively.