CN210755685U

CN210755685U - Rotary chuck for spark erosion drilling machine

Info

Publication number: CN210755685U
Application number: CN201921337814.9U
Authority: CN
Inventors: 翁红梅
Original assignee: Suzhou Yamasen Machine Tool Co ltd
Current assignee: Suzhou Yamasen Machine Tool Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-06-16
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses a rotating chuck for spark erosion drilling machine, including the mount that can follow the workstation and reciprocate, the mount top is consolidated has the rotating electrical machines. An output shaft of the rotating motor penetrates through the fixed frame to be connected with a pneumatic chuck, the pneumatic chuck comprises an inner chuck and an outer shaft sleeve, the rotating motor drives the inner chuck to rotate relative to the outer shaft sleeve, the upper end of the inner chuck is fixedly connected with the output shaft, the lower end of the inner chuck is provided with a cavity for inserting the electrode chuck, the inner chuck is also provided with a plurality of positioning grooves communicated with the cavity, and steel balls are arranged in the positioning grooves in a sliding manner; the outer shaft sleeve moves up and down along the inner chuck under the action of the cylinder, the cylinder is fixed below the fixing frame, the steel balls are pushed by the outer shaft sleeve to be inserted into the cavity, the electrode chuck inserted into the cavity is clamped, and a first concave ring for clamping the steel balls in the holes is arranged on the electrode chuck. The electrode chuck is convenient and fast to install by the rotating head, and automatic installation can be realized.

Description

Rotary chuck for spark erosion drilling machine

Technical Field

The utility model relates to a punch equipment field, in particular to a rotatory chuck for spark erosion drilling machine.

Background

The electric spark punching machine is also called electric spark punching machine and electric spark pore discharging machine, and its main working principle is that a hollow thin metal tube (becoming electrode) which can be continuously vertically moved is used as electrode to make pulse spark discharge to remove metal pore-forming on the workpiece. The spark erosion perforating machine is generally used as a corollary device of a spark erosion wire cutting machine tool and is used for processing threading holes, chemical fiber spinnerets, spinneret holes of spinneret plates, filter plates, group holes of sieve plates, heat dissipation holes of engine blades and cylinder bodies, oil passages and gas passage holes of hydraulic and pneumatic valve bodies and the like. The electrode of the puncher needs to be installed in the electrode chuck, and is driven by the rotating electrical machines to rotate and punch, and the existing electrode chuck is fixed at the output end of the rotating electrical machines, or the electrode chuck is screwed up manually, so that manpower and time are wasted, and the working efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, an object of the present invention is to provide a rotary head for an electric discharge machine, which is convenient for replacing an electrode chuck.

In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a rotating head for spark erosion drilling machine, includes the mount that can follow the workstation and reciprocate, the mount top is consolidated there is rotating electrical machines, its characterized in that: an output shaft of the rotating motor penetrates through the fixing frame to be connected with a pneumatic chuck, the pneumatic chuck comprises an inner chuck and an outer shaft sleeve, the rotating motor drives the inner chuck to rotate relative to the outer shaft sleeve, the upper end of the inner chuck is fixedly connected with the output shaft, the lower end of the inner chuck is provided with a cavity for inserting the electrode chuck, the inner chuck is also provided with a plurality of positioning grooves communicated with the cavity, and steel balls are arranged in the positioning grooves in a sliding manner; the outer shaft sleeve moves up and down along the inner chuck under the action of the cylinder, the cylinder is fixed below the fixing frame, the steel balls are pushed by the outer shaft sleeve to be inserted into the cavity, the electrode chuck inserted into the cavity is clamped, and a first concave ring for clamping the steel balls in the holes is arranged on the electrode chuck.

The beneficial effects of the utility model are that, the pneumatic chuck is connected to the rotating electrical machines below, and the pneumatic chuck includes interior chuck and outer axle sleeve, and outer axle sleeve reciprocates along interior chuck under the cylinder effect, promotes the steel ball chucking electrode chuck on the interior chuck, and utilizes the roll characteristic of steel ball, and the relative outer axle sleeve of electrode chuck of chuck and chucking is rotatory in being driven by the rotating electrical machines.

Preferably, the inner chuck is a hollow cylinder, a concave table is arranged at the lower end of the outer wall of the inner chuck, the positioning groove is arranged in the concave table, a spring is sleeved outside the concave table, and the upper end and the lower end of the spring are respectively fixed on the upper end face and the lower end face of the concave table. The spring prevents the steel balls from sliding out of the positioning grooves when the outer shaft sleeve moves upwards, and the steel balls do not provide inward thrust.

Preferably, a second concave ring is arranged at the lower end of the boss, and a shaft clamp spring is arranged in the second concave ring. The inner clamping head is prevented from falling off, and the transverse movement of the inner clamping head is fixed.

Preferably, the outer shaft sleeve is a hollow cylinder, a first convex ring is fixed on the inner wall of the outer shaft sleeve, the first convex ring moves up and down along the concave table, and the first convex ring abuts against the outside of the steel balls to push the steel balls to be embedded into the first concave ring. The first convex ring can push the steel ball to clamp the electrode chuck tightly.

Preferably, the positioning grooves are perpendicular to the axial direction of the inner chuck and symmetrically arranged around the center of the inner chuck, and the number of the positioning grooves is not less than five.

Preferably, one side of the positioning groove, which is close to the cavity, is provided with a second convex ring, and the diameter of the inner side of the second convex ring is smaller than that of the steel ball. The second convex ring can effectively prevent the steel balls from sliding out of the positioning grooves inwards.

Preferably, a third convex ring is fixed at the top end of the outer wall of the outer shaft sleeve, a second output shaft of the two cylinders is fixedly connected with the third convex ring, and the two cylinders are symmetrically arranged on two sides of the outer shaft sleeve. The outer shaft sleeve is pushed by the cylinder to move up and down.

Drawings

FIG. 1 is a perspective view of the present embodiment;

FIG. 2 is an exploded view of the pneumatic collet of the present embodiment;

FIG. 3 is a cross-sectional view of the pneumatic chuck of the present embodiment;

fig. 4 is an enlarged view of the embodiment a.

In the figure:

1-a fixed frame, 2-a rotating motor, 21-an output shaft, 3-a pneumatic chuck, 31-an inner chuck, 31 a-a cavity, 31 b-a positioning groove, 31 d-a concave table, 31 f-a second concave ring, 31 h-a second convex ring, 32-an outer shaft sleeve, 32 a-a first convex ring, 32 b-a third convex ring, 33-a steel ball, 34-a spring, 35-a snap spring for a shaft, 4-an electrode chuck, 41-a first concave ring and 5-a cylinder.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1-4, the electrode holder 4 of the present embodiment is used for clamping an electrode to be perforated, and the electrode holder 4 is a cylindrical body having an outer wall provided with a first recessed ring 41.

The utility model provides a rotating head for spark erosion drilling machine, is including can following mount 1 that the workstation reciprocated, and 1 upper end of mount has consolidated rotating electrical machines 2, and the fuselage welded fastening of rotating electrical machines 2 is at 1 up end of mount, and the output shaft 21 of rotating electrical machines 2 wears out mount 1 and is connected with pneumatic chuck 3. The pneumatic chuck 3 comprises an inner chuck 31 and an outer shaft sleeve 32, the upper end of the inner chuck 31 is fixedly connected with the output shaft 21, the inner chuck 31 is a hollow cylinder, and the output shaft 21 is inserted into the inner chuck 31 from the upper end and is fixedly connected with the inner chuck 31. Outer axle sleeve 32 reciprocates along interior chuck 31 under the effect of cylinder 5, and outer axle sleeve 32 and cylinder 4's second output shaft fixed connection, cylinder 5 are two, and the symmetry sets up at outer axle sleeve 32 both ends, and cylinder 5 passes through the cylinder frame to be fixed in mount 1 below, and rotating electrical machines 2 drives interior chuck 31 and is rotatory for outer axle sleeve 32, and outer axle sleeve 32 irrotational, interior chuck 31 is along self axle rotation promptly.

The lower end of the inner chuck 31 is provided with a cavity 31a for inserting the electrode chuck 4, the inner chuck 31 is also provided with a plurality of positioning grooves 31b communicated with the cavity 31a, the positioning grooves 31b are vertical to the axial direction of the inner chuck 31 and are symmetrically arranged around the center of the inner chuck 31, and the number of the positioning grooves 31b is not less than five. The positioning groove 31b is internally provided with a steel ball 33 in a sliding manner, the steel ball 33 is limited in the positioning groove 31b to slide, and the steel ball 33 cannot slide out of the positioning groove 31 b. The steel ball 33 is inserted into the cavity 31a by being pushed by the outer sleeve 32 to clamp the electrode holder 4 inserted into the cavity 31a, and the first concave ring 41 in which the steel ball 33 is embedded clamps the electrode holder 4.

The lower end of the outer wall of the inner chuck 31 is provided with a concave table 31d, the positioning groove 31b is arranged in the concave table 31d, the outer of the concave table 31d is sleeved with a spring 34, the inner wall of the spring 34 abuts against the outer wall of the convex table 31, the upper end and the lower end of the spring 34 are respectively fixed on the upper end face and the lower end face of the concave table 31d, and the spring 34 is sleeved outside the concave table 31d to limit the steel ball 33 to slide out of the positioning groove 31 b. When the outer shaft sleeve 32 moves upwards, the moving distance is controlled, and the steel balls 33 are ensured to not completely slide out of the outer shaft sleeve 32. A second convex ring 31h is arranged on one side, close to the cavity 31a, of the positioning groove 31b, the diameter of the inner side of the second convex ring 31h is smaller than that of the steel ball 33, and when the outer shaft sleeve 32 pushes the steel ball 33 to move inwards, the steel ball 31 is limited to slide out of the positioning groove 31b inwards. The lower end of the boss 31d is also provided with a second concave ring 31f, and a shaft snap spring 35 is arranged in the second concave ring 31 f. The inner cartridge 31 is integrally formed.

The outer shaft sleeve 32 is a hollow cylinder, a first convex ring 32a is fixed on the inner wall of the outer shaft sleeve 32, the first convex ring 32a moves up and down along the concave table 31d, the first convex ring 32a abuts against the outside of the steel ball 33, and the steel ball 33 is pushed to be embedded into the first concave ring 41. When the first convex ring 32a moves upwards under the action of the cylinder 5, the first convex ring 32a slides to be above the steel balls 33, the electrode chuck 4 is inserted into the cavity 31a, the steel balls 33 are pushed outwards along the positioning grooves 31b, the cylinder 5 pushes the first convex ring 32a downwards, the steel balls 33 are clamped into the first concave ring 41 of the electrode chuck 4, and the electrode chuck 4 is fixed. The steel balls 33 are smooth balls and are fixed between the inner chuck 31 and the outer shaft sleeve 32, so that the rotating motor 2 can drive the inner chuck 31 to rotate relative to the outer shaft sleeve 32 conveniently.

The top end of the outer wall of the outer shaft sleeve 32 is fixed with a third convex ring 32b, the second output shaft of the cylinder 5 is fixedly connected with the third convex ring 32b, and the outer shaft sleeve 32 is an integrally formed metal piece.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims

1. A rotating chuck for spark erosion drilling machine, including mount (1) that can follow the workstation and reciprocate, mount (1) top is consolidated rotating electrical machines (2), its characterized in that: an output shaft (21) of the rotating motor (2) penetrates through the fixed frame (1) to be connected with a pneumatic chuck (3), the pneumatic chuck (3) comprises an inner chuck (31) and an outer shaft sleeve (32), the upper end of the inner chuck (31) is fixedly connected with the output shaft (21), the rotating motor (2) drives the inner chuck (31) to rotate relative to the outer shaft sleeve (32), a cavity (31a) for inserting the electrode chuck (4) is formed in the lower end of the inner chuck (31), a plurality of positioning grooves (31b) communicated with the cavity (31a) are further formed in the inner chuck (31), and steel balls (33) are arranged in the positioning grooves (31b) in a sliding mode; the electrode clamping device is characterized in that the outer shaft sleeve (32) moves up and down along the inner clamping head (31) under the action of the air cylinder (5), the air cylinder (5) is fixed below the fixed frame (1), the steel balls (33) are pushed by the outer shaft sleeve (32) to be inserted into the cavity (31a) and clamped and inserted into the electrode clamping head (4) in the cavity (31a), and a first concave ring (41) for embedding the steel balls (33) is arranged on the electrode clamping head (4).

2. The rotary chuck for spark erosion drilling machine according to claim 1, wherein: interior chuck (31) are hollow cylinder, interior chuck (31) outer wall lower extreme is provided with concave station (31d), constant head tank (31b) set up in concave station (31d), concave station (31d) overcoat has connect spring (34), the upper and lower both ends face in concave station (31d) is fixed respectively at spring (34) upper and lower both ends.

3. The rotary chuck for spark erosion drilling machine according to claim 2, wherein: the lower end of the concave table (31d) is provided with a second concave ring (31f), and a shaft clamp spring (35) is arranged in the second concave ring (31 f).

4. The rotary chuck for spark erosion drilling machine according to claim 2, wherein: the outer shaft sleeve (32) is a hollow cylinder, a first convex ring (32a) is fixed on the inner wall of the outer shaft sleeve (32), the first convex ring (32a) moves up and down along the concave table (31d), the first convex ring (32a) abuts against the outside of the steel ball (33), and the steel ball (33) is pushed to be embedded into the first concave ring (41).

5. The rotary chuck for spark erosion drilling machine according to claim 1, wherein: the positioning groove (31b) is vertical to the axial direction of the inner chuck (31) and surrounds the center of the inner chuck (31) to be symmetrically arranged, and the positioning groove (31b) is not less than five.

6. The rotary chuck for spark erosion drilling machine according to claim 5, wherein: one side of the positioning groove (31b), which is close to the cavity (31a), is provided with a second convex ring (31h), and the diameter of the inner side of the second convex ring (31h) is smaller than that of the steel ball (33).

7. The rotary chuck for spark erosion drilling machine according to claim 1, wherein: the outer shaft sleeve (32) outer wall top is fixed with third bulge loop (32b), the second output shaft and the third bulge loop (32b) fixed connection of cylinder (5), cylinder (5) are two, and the symmetry sets up in outer shaft sleeve (32) both sides.