CN213615304U - Clamping device of cylindrical part - Google Patents

Abstract

The utility model discloses a clamping device for a cylindrical part, which comprises a supporting frame, a supporting core bar, a pneumatic piston, a pull rod, a clamping block and an elastic clamping ring; the tapered section of the pull rod is inserted into the supporting cylinder of the supporting core rod, fixture blocks are respectively installed in fixture block installation holes in the side wall of the supporting cylinder of the supporting core rod, and the outer sides of all the fixture blocks are radially limited through elastic clamping rings; the rear end of the supporting core rod is fixed with a box body for packaging the pneumatic piston through a supporting frame, and a piston rod of the pneumatic piston is fixed with the rear end of the pull rod through threads; when a piston rod of the pneumatic piston pushes the pull rod to move forwards, each clamping block retracts inwards in the radial direction under the action of the elastic force of the elastic clamping ring; when a piston rod of the pneumatic piston pulls the pull rod to move backwards, the pull rod tightly pushes each clamping block to extend outwards through the conical section. The utility model discloses a clamping device can realize stabilizing the clamp to having the projectile body blank of irregular appearance tightly.

Description

Clamping device of cylindrical part

Technical Field

The utility model relates to a clamping device of cylinder belongs to cylinder processing technology field.

Background

The bullet is an important component of the cannonball, and the processing process is that a cylindrical bar material is firstly extruded into a bullet blank with a cylindrical structure and a bottom at one end by adopting a stamping process, and then the bullet blank is subjected to finish machining. Because the elastomer blank is formed by adopting a stamping process, the side wall of the elastomer blank has a wall thickness difference, the inner surface and the outer surface can generate black skin, the mouth part of the blank can also extrude a horseshoe-shaped irregular structure, and the inner surface, the outer surface and the mouth part of the elastomer blank can not be reliably positioned and supported for subsequent finish machining, so that a positioning hole needs to be drilled in the center of the bottom of the elastomer blank and is used as a positioning and supporting hole for subsequent finish machining, and the accurate machining of the positioning hole is particularly important. When drilling, the elastomer blank needs to be reliably clamped firstly, and the existing clamping equipment such as a three-jaw chuck cannot stably clamp the elastomer blank with irregular appearance, so that the problem of part shaking cannot be solved even if the elastomer blank is matched with a mandrel for clamping, and the machining precision of the positioning support hole is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the unable stable clamp of traditional clamping equipment and pressing from both sides body blank that has irregular appearance to influence the technological difficulty of its follow-up accurate processing, provide a clamping device of cylinder for this reason.

The utility model aims at realizing through the following technical scheme:

the utility model discloses a clamping device for a cylindrical part, which comprises a support frame, a support core bar, a pneumatic piston, a pull rod, a clamping block and an elastic clamping ring;

the front end of the supporting core rod is a supporting cylinder of which the appearance is matched with the inner shape of the blank of the projectile body to be clamped, the side wall of the supporting cylinder is provided with a group of clamping block mounting holes which are uniformly distributed on the circumference, and the rear end of the supporting core rod is processed with a connecting flange;

the side wall of the front end of the pull rod is provided with a conical section which expands forwards in the axial direction, and the rear end of the pull rod is provided with a threaded connection section;

the shape of the fixture block is matched with the inner shape of a fixture block mounting hole in the side wall of the supporting core bar supporting cylinder, an inclined plane matched with the tapered section of the pull rod is processed at the bottom of the fixture block, and a clamping ring mounting groove is formed in the upper part of the fixture block;

the tapered section of the pull rod is inserted into the supporting cylinder of the supporting core rod, fixture blocks are respectively installed in fixture block installation holes in the side wall of the supporting cylinder of the supporting core rod, and the outer sides of all the fixture blocks are radially limited through elastic clamping rings; the rear end of the supporting core rod is fixed with a box body for packaging the pneumatic piston through a supporting frame, and a piston rod of the pneumatic piston is fixed with the rear end of the pull rod through threads;

when the piston rod of the pneumatic piston pushes the pull rod to move forwards, the conical section of the pull rod leaves the falling space of each fixture block forwards, and each fixture block retracts inwards in the radial direction under the action of the elastic force of the elastic clamping ring; when a piston rod of the pneumatic piston pulls the pull rod to move backwards, the pull rod tightly pushes each clamping block to extend outwards through the conical section.

Working process

When clamping the elastomer blank, the piston rod of the pneumatic piston pushes the pull rod to move forwards, the conical section of the pull rod leaves the falling space of each fixture block forwards, and each fixture block retracts inwards in the radial direction under the elastic action of the elastic clamping ring; the bullet blank is sleeved on the supporting cylinder of the supporting core rod, the piston rod of the pneumatic piston pulls the pull rod to move backwards, the pull rod tightly pushes each clamping block to extend outwards through the conical section, the bullet blank is clamped and positioned, and then the positioning hole is drilled at the center of the bottom of the bullet blank.

Advantageous effects

The utility model discloses a clamping device simple structure, be convenient for make, can realize stabilizing the bullet body blank that has irregular appearance and press from both sides tightly, guaranteed the reliability of the follow-up accurate processing of bullet body, alleviateed workman's intensity of labour simultaneously greatly, but wide application in the tight location of clamp of section of thick bamboo.

Drawings

Fig. 1 is a schematic structural view of the clamping device of the present invention;

in the figure, 1-support frame; 2-a pull rod; 3-supporting the core rod; 5-clamping blocks; 6-an elastic collar; 7-a pneumatic piston;

Detailed Description

The invention will be further described with reference to the accompanying drawings and examples.

Examples

As shown in fig. 1, the clamping device for a cylindrical member of the present invention comprises a supporting frame 1, a supporting core bar 3, a pneumatic piston 7, a pull rod 2, a fixture block 5, and an elastic collar 6;

the front end of the supporting core rod 3 is a supporting cylinder of which the shape is matched with the inner shape of the blank 4 of the elastomer to be clamped, the side wall of the supporting cylinder is provided with a group of clamping block mounting holes which are uniformly distributed on the circumference, and the rear end of the supporting core rod 3 is processed with a connecting flange;

the side wall of the front end of the pull rod 2 is provided with a conical section which expands forwards in the axial direction, and the rear end of the pull rod 2 is provided with a threaded connection section;

the shape of the fixture block 5 is matched with the inner shape of a fixture block mounting hole in the side wall of the support cylinder of the support core rod 3, an inclined plane matched with the conical section of the pull rod 2 is processed at the bottom of the fixture block 5, and a clamping ring mounting groove is formed in the upper part of the fixture block 5;

the tapered section of the pull rod 2 is inserted into the supporting cylinder of the supporting core rod 3, fixture blocks 5 are respectively installed in fixture block installation holes in the side wall of the supporting cylinder of the supporting core rod 3, and the outer sides of all the fixture blocks 5 are radially limited by elastic clamping rings 6; the rear end of the support core rod 3 is fixed with a box body for packaging a pneumatic piston 7 through a support frame 1, and a piston rod of the pneumatic piston 7 is fixed with the rear end of the pull rod 2 through threads;

when the piston rod of the pneumatic piston 7 pushes the pull rod 2 to move forwards, the conical section of the pull rod 2 forwards lets open the falling space of each fixture block 5, and each fixture block 5 retracts inwards in the radial direction under the action of the elastic force of the elastic clamping ring 6; when the piston rod of the pneumatic piston 7 pulls the pull rod 2 to move backwards, the pull rod 2 tightly pushes each fixture block 5 through the conical section to extend outwards.

When the elastomer blank 4 is clamped, the pull rod 2 is pushed to move forwards through the piston rod of the pneumatic piston 7, the conical section of the pull rod 2 opens the falling space of each fixture block 5 forwards, and each fixture block 5 retracts inwards in the radial direction under the elastic action of the elastic clamping ring 6; the elastomer blank 4 is sleeved on the supporting cylinder of the supporting core rod 3, the piston rod of the pneumatic piston 7 pulls the pull rod 2 to move backwards, the pull rod 2 tightly pushes each fixture block 5 to extend outwards through the conical section, so that the elastomer blank 4 is clamped and positioned, and then the positioning hole is drilled at the bottom center of the elastomer blank 4.

Claims (1)

1. A clamping device for a cylindrical part is characterized in that: comprises a support frame, a support core rod, a pneumatic piston, a pull rod, a clamping block and an elastic clamping ring;

the front end of the supporting core rod is a supporting cylinder of which the appearance is matched with the inner shape of the blank of the projectile body to be clamped, the side wall of the supporting cylinder is provided with a group of clamping block mounting holes which are uniformly distributed on the circumference, and the rear end of the supporting core rod is processed with a connecting flange;

the side wall of the front end of the pull rod is provided with a conical section which expands forwards in the axial direction, and the rear end of the pull rod is provided with a threaded connection section;

the shape of the fixture block is matched with the inner shape of a fixture block mounting hole in the side wall of the supporting core bar supporting cylinder, an inclined plane matched with the tapered section of the pull rod is processed at the bottom of the fixture block, and a clamping ring mounting groove is formed in the upper part of the fixture block;

the tapered section of the pull rod is inserted into the supporting cylinder of the supporting core rod, fixture blocks are respectively installed in fixture block installation holes in the side wall of the supporting cylinder of the supporting core rod, and the outer sides of all the fixture blocks are radially limited through elastic clamping rings; the rear end of the supporting core rod is fixed with a box body for packaging the pneumatic piston through a supporting frame, and a piston rod of the pneumatic piston is fixed with the rear end of the pull rod through threads;

when the piston rod of the pneumatic piston pushes the pull rod to move forwards, the conical section of the pull rod leaves the falling space of each fixture block forwards, and each fixture block retracts inwards in the radial direction under the action of the elastic force of the elastic clamping ring; when a piston rod of the pneumatic piston pulls the pull rod to move backwards, the pull rod tightly pushes each clamping block to extend outwards through the conical section.

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