CN201573072U

CN201573072U - Parallel swelling inner hole clamping device

Info

Publication number: CN201573072U
Application number: CN200920294011XU
Authority: CN
Inventors: 朱春明; 聂庆云
Original assignee: Chongqing Changan Industry Group Co Ltd
Current assignee: Chongqing Changan Industry Group Co Ltd
Priority date: 2009-12-21
Filing date: 2009-12-21
Publication date: 2010-09-08
Anticipated expiration: 2019-12-21

Abstract

The utility model discloses a parallel swelling inner hole clamping device. The clamping device comprises a clamp body, a spring sleeve and a force transferring screw which transfers the holding force, a rear mandrel, a spring and a connector. Wherein the clamp body is the hollow cylinder structure, the sizes of the front external diameter and the rear external diameter of the clamp body are not same, the spring sleeve is sheathed at the front part of the clamp body, the front part of the clamp body and the spring sleeve are matched with each other by two parallel tapers. The force transferring screw is passed into the clamp body from the front end of the spring sleeve and the clamp body, and is connected with the rear mandrel in the clamp body, the lower end face of the head of the force transferring screw is contacted with the front end face of the spring sleeve, the rear end of the rear mandrel is also connected with the connector at the outside of the rear end of the clamp body through connecting screws. In the device of the utility model, the machine tool tension is transferred to the end face of the spring sleeve through the connector, the rear mandrel and the force transferring screw, utilizing the structure that the spring sleeve and the front part of the clamp body are matched with each other by parallel taper, so that the spring sleeve is moved along the axial direction on the clamp body under the axial force, thereby two ends of the spring sleeve are enlarged by the same speed, the clamp is ensured to swell in parallel, thereby the reliable clamping of an inner hole of a processed part is achieved.

Description

A kind of parallel big endoporus clamping device that rises

Technical field

The utility model relates to machining, is particularly useful for endoporus clamping positioning jig device structural design.

Background technology

In revolving body machining, blank location clamps generally adopts external diameter, endoporus location to clamp, but for the blank external diameter irregular in hole depth and machining accuracy the not positive problem of clamping appears easily when high, cause machining accuracy to be difficult to guarantee.

Summary of the invention

In order to solve endoporus location clamping problem in the machining, the utility model provides a kind of parallel big endoporus clamping device that rises, simple structure, and the location is reliable.

The technical scheme that its technical problem that solves the utility model adopts is as follows:

A kind of parallel big endoporus clamping device that rises, described clamping device comprises power screw, rear spindle, spring and the connector of clamp body, spring housing and transmission chucking power.

Described clamp body is the anisometric hollow cylinder body structure of front and back external diameter, spring housing is enclosed within the clamp body front portion, clamp body is anterior to match with two parallel taperings with spring housing, power screw pierces into clamp body from spring housing and clamp body front end, be connected with the rear spindle in the clamp body, the head lower surface of power screw contacts with the front end face of spring housing, and described rear spindle rear end is connected with connector outside the clamp body rear end by attachment screw again.

This device is the lathe pulling force to be delivered on the end face of spring housing by connector, rear spindle and power screw, the parallel tapering that utilizes spring housing and clamp body front portion is distribution structure mutually, under the effect of tapering, spring housing is moved axially on clamp body under responsive to axial force, thereby the spring housing two ends are enlarged with same speed, the assurance anchor clamps are parallel to rise greatly, reaches the reliable clamping to the part to be processed endoporus.Simultaneously, in moving, under the effect of part at positioning sleeve, be not moved, and after unclamping anchor clamps, also have the discharging effect, help easily to take off part with moving of spring housing.

Further, greater than anterior diameter, on the front end face at clamp body middle part positioning sleeve is installed at the diameter at described clamp body middle part, positioning sleeve is enclosed within outside the rear section of spring housing, and leaves between them and hold the spring housing big gap of rising; Have corresponding hole between the front end face at described positioning sleeve and clamp body middle part, in the hole, be equipped with first guider screw and the first compression spring, positioning sleeve is connected on the clamp body by guider screw, under the thrust of spring force, be connected with certain interval, make product that certain amount of movement axially arranged when drawing folder, guarantee not slide relatively between spring housing and the product, improve anchor clamps service life.

Also be stamped end cap in addition outside positioning sleeve, end cap is connected on the clamp body by trip bolt, and it mainly plays position-limiting action, promptly restraining spring cover rise in a large number, it is bad to avoid when not having the clamping product spring housing not risen, and also limits position that positioning sleeve is in simultaneously.

Also have, also have corresponding hole between described clamp body rear end and connector, assembling second guider screw and second compresses spring in the hole.After the lathe pull bar unclamped, under the spring force thrust, connector moved to the product clamping end, and product is unclamped, and was beneficial to and took off product.

As seen, the major advantage of this device be can solve in the machining internal clamp rise make great difference and clamping in product move axially problem, simple in structure, locate reliably, practical, cost is low.

Description of drawings

The structural representation of this parallel big endoporus grip device that rises of Fig. 1

Among the figure, 1--power screw 2--spring housing 3--clamp body 4--compression spring 5--positioning sleeve 6--end cap 7--rear spindle 8--compression spring 9--guider screw 10--guider screw 11--guider screw 12--alignment pin 13--connector

The specific embodiment

Further specify the structure of this device below in conjunction with accompanying drawing:

Referring to Fig. 1, this parallel big endoporus grip device that rises includes power screw 1, spring housing 2, clamp body 3, the first compression spring 4, positioning sleeve 5, end cap 6, rear spindle 7, the second compression spring 8, second guider screw 9, first guider screw 10, trip bolt 11, alignment pin 12 and connector 13.

Wherein clamp body 3 is installed on the machine tool chief axis, and clamp body 3 is the anisometric hollow cylinder body structure of front and back external diameter, and the external rear face of clamp body 3 has external taper, cooperates with the machine tool chief axis hole.Spring housing 2 is enclosed within clamp body 3 front portions, clamp body 3 front portions match with two parallel taperings with spring housing 2, and on clamp body 3, be provided with alignment pin 12, power screw 1 pierces into clamp body from spring housing 2 and clamp body 3 front ends, be connected with the rear spindle 7 in the clamp body 3, the head lower surface of power screw 1 contacts with the front end face of spring housing 2, and rear spindle 7 rear ends are connected with connector 13 outside the clamp body rear end by attachment screw again.Connector 13 cylindricals are helicitic texture, be connected by screw thread with the lathe pull bar, the lathe pulling force is delivered on the grip device, the power of anchor clamps work is provided, and pulling force is acted on the spring housing 2 by power screw 1, spring housing 2 is parallel and manufacture with clamp body 3 outer cones by endoporus two taperings, guarantees tapering and relative position consistent size.Under the axial pulling of power screw 1, spring housing 2 is moved axially on clamp body 3, thereby the big parallel big purpose that rises of grip device that realizes that rises occurs being out of shape at tapering effect lower spring cover 2.

But under the pulling force effect, product will move axially, and the inconsistent product mobile displacement that will cause of interior hole dimension changes, so preferably will increase detent mechanism.This device has adopted positioning sleeve 5, and positioning sleeve 5 is directly installed on the bigger middle part end face of clamp body 3 diameters, and the front end face of positioning sleeve promptly contacts with the end face of the part that is held, and guarantees that the operating position of part is fixed in clamping process.Positioning sleeve 5 is enclosed within outside the rear section of spring housing 2, and leaves between them and hold the spring housing big gap of rising.Simultaneously between the front end face in the middle part of positioning sleeve 5 and the clamp body, have corresponding hole, in the hole, be equipped with first guider screw 10 and the first compression spring 4, positioning sleeve 5 is connected on the clamp body 3 by first guider screw 10, and such first compression spring 4 can provide a part of material returned power.Also be stamped end cap 6 outside positioning sleeve 5, end cap 6 is connected on the clamp body 3 by trip bolt 11.

In addition, after machining at product, pine folder rear spring cover 2 can retreat automatically, has corresponding hole at the binding site at described clamp body 3 and connector 13, assembling second guider screw 9 and the second compression spring 8 in the hole.

Claims

1. parallel big endoporus clamping device that rises is characterized in that: described clamping device comprises clamp body (3), spring housing (2) and transmits power screw (1), rear spindle (7) and the connector (13) of chucking power;

Described clamp body (3) is the anisometric hollow cylinder body structure of front and back external diameter, and clamp body (3) external rear face has external taper, cooperates with the machine tool chief axis hole; Described spring housing (2) is enclosed within clamp body (3) front portion, clamp body (3) is anterior to match with two parallel taperings with spring housing (2), power screw (1) pierces into clamp body from spring housing (2) and clamp body (3) front end, be connected with the rear spindle (7) in the clamp body, the head lower surface of power screw (1) contacts with the front end face of spring housing (2); The rear end of described rear spindle (7) is connected with connector (13) outside the clamp body rear end by attachment screw again, and connector (13) cylindrical is a helicitic texture, is connected by screw thread with the lathe pull bar, transmits to clamp power.

2. the parallel big endoporus clamping device that rises according to claim 1, it is characterized in that: the diameter in the middle part of described clamp body (3) is greater than anterior diameter, on the front end face at clamp body middle part, positioning sleeve (5) is installed, positioning sleeve (5) is enclosed within outside the rear section of spring housing (2), and leaves between them and hold the spring housing big gap of rising; Have corresponding hole between the front end face at described positioning sleeve (5) and clamp body middle part, be equipped with first guider screw (10) and first and compress spring (4) in the hole, positioning sleeve (5) is connected on the clamp body by guider screw (10); Also be stamped end cap (6) outside positioning sleeve (5), end cap (6) is connected on the clamp body by trip bolt (11).

3. the parallel big endoporus clamping device that rises according to claim 1 and 2 is characterized in that: the binding site at described clamp body (3) and connector (13) has corresponding hole, assembling second guider screw (9) and the second compression spring (8) in the hole.