Electrode fixing device of mold machining electric discharge machine

Abstract

An electrode fixing device of a mold machining electric discharge machine comprises a clamping rod and an electrode rod axially arranged in an axial inner hole of a cylinder on the lower section of the clamping rod, a plurality of elastic clamping pieces are arranged on the opening edge of a lower hole opening of the axial inner hole of the cylinder at equal intervals, and the lower end of the cylinder is sleeved with a locking threaded sleeve. An annular locking check ring corresponding to the outer side wall of the elastic clamping piece is arranged on a lower hole opening of the locking threaded sleeve screw hole, an electrode moving threaded sleeve is spirally arranged on the lower section of the locking threaded sleeve, and an annular clamping piece corresponding to the electrode rod is arranged on the lower section of an inner hole of the electrode moving threaded sleeve. According to the electrode fixing device, when the electrode is moved downwards after being damaged, a worker only needs to rotate the locking threaded sleeve and the electrode moving threaded sleeve according to steps, the situation that the electrode swings when the electrode is moved does not need to be considered at all, in addition, the worker can more accurately control the moving distance through a spiral adjusting mode, and the working efficiency is improved. The electrode fixing device reduces the operation difficulty and has outstanding practicability.

Description

Technical Field

[0001] The utility model relates to an electrode fixing device for an electric spark machine for mold processing, belonging to the technical field of electrode fixing accessories for electric spark machines. Background Art

[0002] The existing EDM machine electrode fixing structure is shown in the Chinese utility model patent "Authorization Announcement No.: CN205085512U; Authorization Announcement Date: March 16, 2016; Name: EDM Machine Electrode Fixing Tool", which includes a detachable electrode clamping rod mounted on a connecting rod, and the connecting rod is fixed on the EDM machine. The lower end of the lower end cylinder of the electrode clamping rod is provided with an elastic clip, and the retraction and locking of the elastic clip is achieved by rotating the clamping nut with a locking annular baffle at the lower end. When the electrode is affected by the loss of the lower end and continues to be used, the electrode can be manually moved by loosening the clamping nut to achieve the downward movement of the electrode. This adjustment method requires workers to manually hold the electrode to move it, which not only requires precise control of the vertical movement distance, but also requires ensuring the alignment of the vertically moved electrode and the clamping rod. The operation is difficult, and there are defects such as high technical requirements for workers and low assembly efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an electrode fixing device for a mold processing electric spark machine in view of the above-mentioned defects of the prior art. When the electrode is moved down after the electrode is worn out, the worker only needs to rotate the locking screw sleeve and the electrode moving screw sleeve respectively according to the steps, and there is no need to consider the misalignment between the electrode and the clamping rod when moving the electrode. In addition, the adjustment method of the spiral also makes it easier for the worker to control the vertical precise movement of the electrode. The electrode fixing device reduces the operating difficulty of the worker, improves the assembly efficiency, and has outstanding practicality.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A mold processing electric spark machine electrode fixing device comprises a clamping rod and an electrode rod axially arranged in the axial inner hole of the lower section of the clamping rod, a plurality of elastic clips are equidistantly arranged at the edge of the lower opening of the axial inner hole of the cylinder, a locking screw sleeve is sleeved on the lower end of the cylinder, an annular locking retaining ring corresponding to the outer wall of the elastic clip is arranged at the lower opening of the screw hole of the locking screw sleeve, an electrode moving screw sleeve is spirally arranged on the lower section of the locking screw sleeve, and an annular clamp corresponding to the electrode rod is arranged at the lower section of the inner hole of the electrode moving screw sleeve When the locking screw sleeve moves up to the highest position so that the elastic clip is in a contracted state, and the electrode moving screw sleeve is also in the highest position, the inner diameter of the annular clamp is enlarged by the extrusion of the elastic clip and is mounted on the outside of the elastic clip; when the locking screw sleeve moves down to release the locking of the elastic clip and the annular clamp moves down to separate from the elastic clip, the inner diameter of the annular clamp rebounds and shrinks to clamp the electrode rod. At this time, the locking screw sleeve is fixed, and only the electrode moving screw sleeve is rotated, and the annular clamp can drive the electrode rod to move steadily downward.

[0006] By adopting the above technical solution, a mold processing electric spark machine electrode fixing device is provided. When the electrode is moved down after the electrode is worn out, the worker only needs to rotate the locking screw sleeve and the electrode moving screw sleeve in steps, and there is no need to consider the misalignment between the electrode and the clamping rod when the electrode is moved. In addition, the spiral adjustment method also makes it easier for the worker to control the vertical precise movement of the electrode. The electrode fixing device reduces the difficulty of operation for the worker and improves the assembly efficiency.

[0007] The utility model is further configured as follows: the electrode moving screw sleeve is spirally sleeved on the external thread of the lower section of the outer side wall of the locking screw sleeve.

[0008] By adopting the above technical solution, a specific solution for the electrode moving screw sleeve and the locking screw sleeve is provided.

[0009] The utility model is further configured as follows: the electrode moving screw sleeve is spirally installed in the annular groove on the lower end surface of the locking screw sleeve.

[0010] The utility model is further configured as follows: the outer side wall of the annular groove is provided with an inner thread which matches with the outer thread of the upper section of the outer side wall of the electrode moving screw sleeve.

[0011] By adopting the above technical scheme, another specific scheme for the electrode moving screw sleeve and the locking screw sleeve is provided. This scheme can provide a larger operating space for the outer wall of the locking screw sleeve, can make the vertical structure of the locking screw sleeve shorter, can reduce the vertical space occupied by the locking screw sleeve to a greater extent, and provide a wider design and placement space for other components.

[0012] The utility model is further configured as follows: the annular clamping piece is composed of a coaxially arranged large rubber ring, a small rubber ring, and rubber rods equally spaced radially between the large rubber ring and the small rubber ring.

[0013] The utility model is further configured as follows: the inner wall of the small rubber ring is provided with a Teflon coating.

[0014] By adopting the above technical solution, a specific annular clamp is provided, which has good radial deformation ability, and the Teflon coating on the inner wall of the small rubber ring can reduce the friction between the annular clamp and the electrode to a certain extent, providing a certain convenience for the rotation of the annular clamp.

[0015] The utility model is further configured as follows: the inner surface of the annular locking retaining ring is an annular inclined surface with a low inner ring hole edge and a high outer ring edge.

[0016] By adopting the above technical solution, the specific structure of the inner surface of the annular locking retaining ring is limited.

[0017] The utility model is further configured as follows: an upper section of the outer side wall of the locking screw sleeve is provided with an anti-slip structure which facilitates rotation.

[0018] The utility model is further configured as follows: the lower section of the outer side wall of the electrode moving screw sleeve is also provided with an anti-slip structure for facilitating rotation.

[0019] By adopting the above technical solution, anti-slip structures are provided on the outer wall of the locking screw sleeve and the outer wall of the electrode moving screw sleeve, which can effectively improve the convenience of rotating the two.

[0020] The utility model is further configured as follows: the upper end of the clamping rod is detachably fixed on the connecting rod of the electric spark machine body.

[0021] By adopting the above technical solution, the upper end of the clamping rod is detachably fixed to the connecting rod, which facilitates the installation, disassembly and maintenance of the clamping rod.

[0022] The main beneficial effects of the utility model are:

[0023] 1. When the electrode is moved down after the electrode is worn out, the worker only needs to rotate the locking screw sleeve and the electrode moving screw sleeve according to the steps, without having to consider the misalignment between the electrode and the clamping rod when the electrode is moved. In addition, the spiral adjustment method also makes it easier for workers to control the vertical precise movement of the electrode. The electrode fixing device reduces the difficulty of operation for workers and improves assembly efficiency.

[0024] 2. The new pole fixing device fixes the electrode moving screw sleeve in the annular groove on the lower end surface of the locking screw sleeve. This solution can provide a larger operating space for the outer side wall of the locking screw sleeve, make the vertical structure of the locking screw sleeve shorter, and reduce the occupation of the vertical space by the locking screw sleeve to a greater extent, providing a wider design and placement space for other components;

[0025] 3. The improved clamping piece of the new pole fixing device has good radial deformation ability, and the Teflon coating on the inner wall of the small rubber ring can reduce the friction between the annular clamping piece and the electrode to a certain extent, providing a certain convenience for the rotation of the annular clamping piece;

[0026] 4. The new pole fixing device is provided with anti-slip structures on the outer wall of the locking nut and the outer wall of the electrode moving screw sleeve, which can effectively improve the convenience of rotating the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the structure of the appearance of the utility model;

[0029] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0030] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0031] In the figure, 1, connecting rod; 11, axial opening; 2, connecting nut; 3, clamping rod; 31, axial plug plate; 32, upper end baffle; 33, cylinder; 34, elastic clip; 4, locking screw sleeve; 41, annular groove; 5, electrode moving screw sleeve; 61, large rubber ring; 62, rubber rod; 63, small rubber ring; 7, electrode rod. DETAILED DESCRIPTION

[0032] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1:

[0034] like Figures 1 to 3As shown, a mold processing EDM machine electrode fixing device includes a clamping rod 3 and an electrode rod 7 axially arranged in the axial inner hole of the lower cylinder 33 of the clamping rod 3, and the upper end of the clamping rod 3 is detachably fixed to the connecting rod 1 (specifically, after the axial opening 11 at the lower end of the connecting rod 1 is matched with the axial plug plate 31 at the upper end of the clamping rod 3, the annular seal at the lower hole of the connecting nut 2 is located on the lower side of the baffle 32 at the upper end of the clamping rod, and the upper screw hole of the connecting nut 2 is spirally matched with the external thread at the lower end of the connecting rod 1, so as to realize the fixed connection between the connecting rod 1 and the clamping rod 3), and the connecting rod 1 is fixed to the body of the EDM machine.

[0035] In the clamping rod 3, a plurality of elastic clips 34 are equidistantly arranged at the edge of the lower opening of the axial inner hole of the cylinder 33, a locking screw sleeve 4 is sleeved on the lower end of the cylinder 33, and an annular locking retaining ring corresponding to the outer side wall of the elastic clip 34 is arranged at the lower opening of the screw hole of the locking screw sleeve 4, and the inner surface of the annular locking retaining ring is an annular inclined surface with a low inner ring hole edge and a high outer ring edge, and an annular groove 41 on the lower end surface of the locking screw sleeve 4 is spirally connected to the electrode moving screw sleeve 5, and the locking screw sleeve 4 and the outer side of the electrode moving screw sleeve 5 are connected. The side walls are all provided with anti-slip structures for easy rotation, the outer side wall of the annular groove 41 is provided with an internal thread matching the external thread of the upper section of the outer side wall of the electrode moving screw sleeve 5, the lower section of the inner hole of the electrode moving screw sleeve 5 is provided with an annular clamp corresponding to the electrode rod 7, the annular clamp is composed of a coaxially arranged large rubber ring 61, a small rubber ring 63 and a rubber rod 62 equally divided radially arranged between the large rubber ring 61 and the small rubber ring 63, and the inner wall of the small rubber ring 63 is provided with a Teflon coating.

[0036] Embodiment 2:

[0037] The difference between the first embodiment and the second embodiment is that the electrode moving screw sleeve 5 is spirally sleeved on the external thread of the lower section of the outer side wall of the locking screw sleeve 4 .

[0038] Principle of use: When the locking screw sleeve 4 moves downward to release the locking of the elastic clip 34 and the annular clamp moves downward to disengage from the elastic clip 34, the inner diameter of the annular clamp rebounds and shrinks to clamp the electrode rod 7. At this time, the locking screw sleeve 4 is fixed, and only the electrode moving screw sleeve 5 is rotated, and the annular clamp can drive the electrode rod 7 to move downward steadily; when the electrode rod 7 is lowered to a suitable position, the electrode moving screw sleeve 5 is fixed, and the locking screw sleeve 4 is spirally moved upward to make the elastic clip 34 clamp and fix the electrode rod 7, and finally the electrode moving screw sleeve 5 is spirally moved upward until the annular clamp is sleeved on the outer side of the locked elastic clip 34, and at this time, the electrode moving screw sleeve 5 is moved upward, and the electrode rod 7 no longer moves upward synchronously with the electrode moving screw sleeve 5.

Claims

1. A mold processing electric spark machine electrode fixing device, comprising a clamping rod (3) and an electrode rod (7) axially arranged in the axial inner hole of a lower barrel (33) of the clamping rod (3), a plurality of elastic clips (34) are equidistantly arranged at the mouth of the lower opening of the axial inner hole of the barrel (33), a locking screw sleeve (4) is sleeved on the lower end of the barrel (33), and an annular locking retaining ring corresponding to the outer side wall of the elastic clip (34) is arranged at the lower opening of the screw hole of the locking screw sleeve (4), characterized in that: The lower section of the locking screw sleeve (4) is spirally provided with an electrode moving screw sleeve (5), and the lower section of the inner hole of the electrode moving screw sleeve (5) is provided with an annular clamp corresponding to the electrode rod (7); when the locking screw sleeve (4) moves up to the highest position so that the elastic clip (34) is in a contracted state, and the electrode moving screw sleeve (5) is also in the highest position, the inner diameter of the annular clamp is enlarged by the extrusion of the elastic clip (34) and is fitted onto the outer side of the elastic clip (34); when the locking screw sleeve (4) moves down to release the locking of the elastic clip (34) and the annular clamp moves down to be separated from the elastic clip (34), the inner diameter of the annular clamp rebounds and shrinks and clamps the electrode rod (7); at this time, the locking screw sleeve (4) is fixed, and only the electrode moving screw sleeve (5) is rotated, and the annular clamp can drive the electrode rod (7) to move steadily downward.

2. The electrode fixing device for a mold processing electric spark machine according to claim 1, characterized in that: The electrode moving screw sleeve (5) is spirally sleeved on the external thread of the lower section of the outer side wall of the locking screw sleeve (4).

3. The electrode fixing device for mold processing electric spark machine according to claim 1, characterized in that: The electrode moving screw sleeve (5) is screwed into the annular groove (41) on the lower end surface of the locking screw sleeve (4).

4. The electrode fixing device for a mold processing electric spark machine according to claim 3 is characterized in that: The outer side wall of the annular groove (41) is provided with an internal thread which matches the external thread on the upper section of the outer side wall of the electrode moving screw sleeve (5).

5. The electrode fixing device for mold processing electric spark machine according to claim 1, characterized in that: The annular clamping member is composed of a coaxially arranged large rubber ring (61), a small rubber ring (63), and a rubber rod (62) equally spaced radially between the large rubber ring (61) and the small rubber ring (63).

6. The electrode fixing device for a mold processing electric spark machine according to claim 5, characterized in that: The inner wall of the small rubber ring (63) is provided with a Teflon coating.

7. The electrode fixing device for a mold processing electric spark machine according to claim 1, characterized in that: The inner surface of the annular locking retaining ring is an annular inclined surface with a low inner ring hole edge and a high outer ring edge.

8. The electrode fixing device for a mold processing electric spark machine according to claim 1, characterized in that: The upper section of the outer side wall of the locking screw sleeve (4) is provided with an anti-slip structure for facilitating rotation.

9. The electrode fixing device for a mold processing electric spark machine according to claim 8, characterized in that: The lower section of the outer side wall of the electrode moving screw sleeve (5) is also provided with an anti-slip structure for facilitating rotation.

10. The electrode fixing device for mold processing electric spark machine according to claim 1, characterized in that: The upper end of the clamping rod (3) is detachably fixed on the connecting rod (1).

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