Drill chuck driving device for spark erosion drilling machine

Abstract

The utility model discloses a drill chuck driving device for a spark erosion drilling machine, which comprises a vertical plate, a lifting seat, a hollow shaft motor, a drill chuck, a drill chuck connecting piece, a ball and a mounting sleeve, a hollow shaft is arranged in the hollow shaft motor, and the mounting sleeve is arranged at the bottom of the lifting seat and is concentric with the hollow shaft. The drill chuck connecting piece is arranged below the hollow shaft, a guide sleeve extending into the mounting sleeve is arranged at the top of the drill chuck connecting piece, a check ring is concentrically arranged at the top of the guide sleeve, a supporting ring located below the check ring is arranged in the mounting sleeve, and a slope face is arranged at the top of the supporting ring. A ball retainer pointing to the slope surface is arranged at the bottom of the check ring, and the balls are arranged at the bottom of the ball retainer and are in rolling contact with the slope surface. According to the drill chuck driving device for the spark erosion drilling machine, rotation and vertical reciprocating motion of the drill chuck connecting piece and the drill chuck can be achieved through the hollow shaft motor.

Description

Technical Field

[0001] The utility model relates to the field of electric spark punching machines, in particular to a drill chuck driving device for electric spark punching machines. Background Art

[0002] The electric spark perforator is a commonly used fine hole processing equipment. It usually uses a thin copper tube as the electrode wire. The rotation and vertical reciprocating motion of the thin copper tube are used to perform pulse spark discharge on the workpiece, and the metal workpiece is etched to form fine holes.

[0003] In the process of forming fine holes, the thin copper tube needs to rotate and move vertically back and forth, and also needs to move downward for feeding. Therefore, the vertical reciprocating motion and downward feeding of the thin copper tube usually use the same motor. The invention patent with application number 2024105429708 discloses a portable electric spark perforator, which realizes the vertical reciprocating motion and downward feeding of the drill chuck through a motor, and requires frequent forward and reverse switching of the motor, which greatly affects the service life of the motor and controller, increases maintenance costs, and needs to be improved. Utility Model Content

[0004] The utility model aims to provide a drill chuck driving device for an electric spark punching machine, which can avoid frequent forward and reverse switching of a motor and prolong the service life of the motor.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The camshaft of the embodiment of the present invention is a kind of camshaft driving device for electric spark punching machine, comprising: a vertical plate, a lifting seat, a hollow shaft motor, a drill chuck, a drill chuck connecting piece, a ball and a mounting sleeve, the lifting seat can be arranged on the front side of the vertical plate movably up and down, the hollow shaft motor is vertically arranged on the lifting seat, a hollow shaft is arranged in the hollow shaft motor, the mounting sleeve is arranged at the bottom of the lifting seat and is concentric with the hollow shaft, the drill chuck connecting piece is arranged below the hollow shaft, the drill chuck is arranged at the bottom of the drill chuck connecting piece, a guide sleeve extending into the mounting sleeve is arranged at the top of the drill chuck connecting piece, the bottom of the hollow shaft extends into the guide sleeve, a retaining ring is concentrically arranged at the top of the guide sleeve, a supporting ring located below the retaining ring is arranged in the mounting sleeve, a ramp surface is arranged at the top of the supporting ring, a ball retainer pointing to the ramp surface is arranged at the bottom of the retaining ring, and the ball is arranged at the bottom of the ball retainer and is in rolling contact with the ramp surface.

[0007] Wherein, a slide rail located at the back of the lifting seat is vertically arranged on the front side of the vertical plate.

[0008] Wherein, a synchronous belt located at one side of the lifting seat and driving the lifting seat to move up and down and a servo motor driving the synchronous belt to operate are vertically arranged on the vertical plate.

[0009] Wherein, a clamping plate connected with the synchronous belt is arranged on the lifting seat.

[0010] Wherein, keyways are vertically arranged on both sides of the inner wall of the guide sleeve, positioning keys extending to the outer wall of the hollow shaft are arranged in the keyways, and sliding grooves corresponding to the positioning keys are vertically arranged on the outer wall of the hollow shaft.

[0011] Wherein, a rotating joint is arranged on the top of the hollow shaft.

[0012] The beneficial effects of the utility model are as follows: a drill chuck driving device for an electric spark punching machine utilizes a drill chuck to clamp a thin copper tube, and the hollow shaft of a hollow shaft motor drives the rotation of the drill chuck connecting piece and the drill chuck, the retaining ring rotates accordingly and drives the ball retainer to rotate, the ball rolls on the slope surface and continuously changes its height, thereby realizing vertical reciprocating motion of the drill chuck connecting piece and the drill chuck, and does not require frequent forward and reverse switching of the servo motor, which is beneficial to extending the service life of the servo motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0015] Figure 3 yes Figure 2 Schematic diagram of the structure of the hollow shaft motor after rotating 180°. DETAILED DESCRIPTION

[0016] Combine the following Figures 1 to 3 The technical solution of the utility model is further illustrated by specific embodiments.

[0017] like Figure 1 and Figure 2 The drill chuck driving device for the electric spark punching machine shown in the figure comprises: a vertical plate 1, a lifting seat 4, a hollow shaft motor 3, a drill chuck 6, a drill chuck connecting piece 5, a ball 15 and a mounting sleeve 14. The lifting seat 4 is movably arranged on the front side of the vertical plate 1. In this embodiment, a slide rail 2 located on the back side of the lifting seat 4 is vertically arranged on the front side of the vertical plate 1 for lifting and guiding.

[0018] A synchronous belt 7 located on one side of the lifting seat 4 and driving it to move up and down, and a servo motor 9 driving the synchronous belt 7 are vertically arranged on the vertical plate 1. In this embodiment, a clamping plate 8 connected to the synchronous belt 7 is arranged on the lifting seat 4, and the synchronous belt 7 is used to realize the descending feeding of the lifting seat 4.

[0019] The hollow shaft motor 3 is vertically arranged on the lifting seat 4, a hollow shaft 12 is arranged in the hollow shaft motor 3, the mounting sleeve 14 is arranged at the bottom of the lifting seat 4 and is concentric with the hollow shaft 12, the drill chuck connector 5 is arranged below the hollow shaft 12, and the drill chuck 6 is arranged at the bottom of the drill chuck connector 5 to realize the rotation drive of the drill chuck 6. It is beneficial for the drill chuck 6 to clamp the thin copper tube, and a rotary joint 10 is arranged on the top of the hollow shaft 12, which is externally connected to a liquid supply pipe to introduce the emulsion into the thin copper tube.

[0020] A guide sleeve 18 extending into the mounting sleeve 14 is provided at the top of the drill chuck connector 5, and the bottom of the hollow shaft 12 extends into the guide sleeve 18. In the present embodiment, keyways are vertically provided on both sides of the inner wall of the guide sleeve 18, and positioning keys 19 extending to the outer wall of the hollow shaft 12 are provided in the keyways. A sliding groove corresponding to the positioning key 19 is vertically provided on the outer wall of the hollow shaft 12, which can ensure the synchronous rotation of the guide sleeve 18 and the hollow shaft 12 without affecting the up and down displacement of the guide sleeve 18 relative to the hollow shaft 12.

[0021] like Figure 2 As shown, a retaining ring 11 is concentrically arranged on the top of the guide sleeve 18, and a supporting ring 17 is arranged below the retaining ring 11 in the mounting sleeve 14. Figure 3 As shown, the top of the support ring 17 is provided with a ramp surface 16, the bottom of the retaining ring 11 is provided with a ball retainer 13 pointing to the ramp surface 16, and the ball 15 is arranged at the bottom of the ball retainer 13 and is in rolling contact with the ramp surface 16. The support ring 17 can be made of a stainless steel ring, which has good wear resistance and low maintenance cost.

[0022] like Figure 2 and Figure 3 As shown, during the 180° rotation of the hollow shaft motor, the ball 15 rolls along the ramp surface 16 to change the position height, thereby realizing the vertical reciprocating motion of the drill chuck 6. There is no need for frequent forward and reverse switching of the servo motor 9, which is beneficial to extending the service life of the servo motor 9.

[0023] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A drill chuck driving device for an electric spark drilling machine, characterized in that: include: A vertical plate, a lifting seat, a hollow shaft motor, a drill chuck, a drill chuck connecting piece, a ball and a mounting sleeve, the lifting seat being movably arranged on the front side of the vertical plate, the hollow shaft motor being vertically arranged on the lifting seat, a hollow shaft being arranged in the hollow shaft motor, the mounting sleeve being arranged at the bottom of the lifting seat and being concentric with the hollow shaft, the drill chuck connecting piece being arranged below the hollow shaft, the drill chuck being arranged at the bottom of the drill chuck connecting piece, a guide sleeve extending into the mounting sleeve being arranged at the top of the drill chuck connecting piece, the bottom of the hollow shaft extending into the guide sleeve, a retaining ring being concentrically arranged at the top of the guide sleeve, a supporting ring being arranged in the mounting sleeve and being located below the retaining ring, a ramp surface being arranged at the top of the supporting ring, a ball retainer pointing to the ramp surface being arranged at the bottom of the retaining ring, the ball being arranged at the bottom of the ball retainer and in rolling contact with the ramp surface.

2. The drill chuck driving device for an electric spark drilling machine according to claim 1, characterized in that: The front side of the vertical plate is vertically provided with a slide rail located at the back side of the lifting seat.

3. The drill chuck driving device for an electric spark drilling machine according to claim 1, characterized in that: The vertical plate is vertically provided with a synchronous belt located at one side of the lifting seat and driving the lifting seat to move up and down, and a servo motor driving the synchronous belt to operate.

4. The drill chuck driving device for an electric spark drilling machine according to claim 3, characterized in that: The lifting seat is provided with a clamping plate connected with the synchronous belt.

5. The drill chuck driving device for an electric spark drilling machine according to claim 1, characterized in that: Keyways are vertically arranged on both sides of the inner wall of the guide sleeve, positioning keys extending to the outer wall of the hollow shaft are arranged in the keyways, and sliding grooves corresponding to the positioning keys are vertically arranged on the outer wall of the hollow shaft.

6. The drill chuck driving device for an electric spark drilling machine according to claim 1, characterized in that: A rotating joint is arranged on the top of the hollow shaft.

Images