Wire-drawing die clamping and positioning device of wire polishing machine

Abstract

The utility model relates to a wire-drawing die clamping and positioning device of a wire polishing machine. The wire-drawing die clamping and positioning device comprises a rotating body, an end cover, a bearing and a rotating belt wheel, an inner cavity of the rotating body is provided with a conical inclined face, the upper end of the rotating body is in threaded connection with the end cover, the bearing is arranged on the rotating body in a sleeving mode and fixedly connected with the linear polishing machine through the base, and the rotating belt wheel is located below the bearing and in threaded connection with the rotating body. The device further comprises an elastic chuck. The elastic chuck is slidably arranged in the inner cavity of the rotating body, and the side face of the conical section can make contact with the conical inclined face of the inner cavity. The device can solve the problem that the edge of the wire-drawing die is damaged by a clamping and positioning mode of an existing wire-drawing die.

Description

Technical Field

[0001] The utility model relates to the technical field of wire drawing die polishing processing, in particular to a clamping and positioning device for a wire drawing die of a wire polishing machine. Background Art

[0002] A wire drawing die is a die based on the pressure drawing process of wire. It enables the wire blank to undergo plastic deformation through the die hole under a certain drawing force, thereby achieving the purpose of reducing its cross-section and increasing its length. In the aspect of polishing the inner hole of the wire drawing die, polishing micro-wires and abrasive powder are generally combined for polishing work. When polishing the inner hole, the wire drawing die needs to have a rotating and reciprocating up-and-down motion state simultaneously. Thus, polishing is achieved through the mutual friction between the polishing micro-wires and the abrasive powder and the inner hole surface of the wire drawing die.

[0003] Before the wire drawing die is polished, it needs to be clamped and positioned. The Chinese utility model patent with the publication number CN2204220Y discloses a high-speed wire polishing machine for wire drawing dies. Its clamping and positioning method is to place the wire drawing die on the conical inclined surface inside the rotating fixture, and then use an end cover to press and clamp for positioning. The drawback is that the wire drawing die and the conical surface are in line contact, which easily damages the edge of the wire drawing die, and further affects the positioning accuracy when the wire drawing die is used subsequently. Moreover, the positioning effect of this positioning method is not ideal. Summary of the Invention

[0004] The utility model provides a clamping and positioning device for a wire drawing die of a wire polishing machine, which can solve the problem that the edge of the existing wire drawing die is damaged by the clamping and positioning method.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A clamping and positioning device for a wire drawing die of a wire polishing machine includes a rotating body, an end cover, a bearing, and a rotating pulley; the inner cavity of the rotating body has a conical inclined surface, the upper end of the rotating body is threadedly connected to the end cover, the bearing is sleeved on the rotating body, the bearing is fixedly connected to the wire polishing machine through a base, the rotating pulley is located below the bearing and is threadedly connected to the rotating body; an elastic chuck is further included;

[0007] The elastic chuck is composed of a conical section, a first cylindrical section, and a second cylindrical section connected in sequence. The small end of the conical section is connected to the first cylindrical section, and the diameter of the small end of the conical section is larger than the diameter of the first cylindrical section, and the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section; a first stepped hole and a second stepped hole are sequentially arranged in the conical section, and the diameter of the first stepped hole is larger than the diameter of the second stepped hole; through holes are provided on both the first cylindrical section and the second cylindrical section; a plurality of openings are provided on the side surface of the conical section, and the openings extend to the side surface of the first cylindrical section;

[0008] The elastic chuck is slidably arranged in the inner cavity of the rotating body, and the side surface of the conical section can contact with the conical inclined surface of the inner cavity.

[0009] The inner cavity of the rotating body is successively composed of a first cylindrical cavity, a conical cavity and a second cylindrical cavity; the inner surface of the first cylindrical cavity is provided with threads and is in threaded connection with the end cover in a matching manner.

[0010] A wire polishing machine's wire drawing die clamping and positioning device further includes a spring and a guide sleeve. The spring is sleeved on the second cylindrical section and is located in the second cylindrical cavity. The upper end of the spring can be stuck by the top of the second cylindrical cavity and the step formed by the second cylindrical section and the first cylindrical section; the guide sleeve is sleeved on the second cylindrical section, the top end of the guide sleeve contacts the spring, and the guide sleeve is in threaded connection with the inner surface of the second cylindrical cavity.

[0011] An annular groove is provided on the bottom side of the first stepped hole, an annular clamping groove is provided near the bottom end of the second cylindrical section, and a retaining ring is arranged on the annular clamping groove.

[0012] The spring is a disc spring

[0013] The opening is composed of a rectangular opening and an arc-shaped opening, and the arc-shaped opening is located at the bottom of the rectangular opening.

[0014] The number of the openings is 4, 6 or 8.

[0015] A notch is provided on the side of the end cover.

[0016] A wire polishing machine's wire drawing die clamping and positioning device further includes an adjusting back plate. An arc-shaped waist hole is provided on the adjusting back plate. The bearing is fixedly connected with the adjusting back plate through a base, and the adjusting back plate is fixedly connected with the wire polishing machine through bolts passing through the arc-shaped waist hole.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1) When the utility model is applied, the wire drawing die is placed in the first stepped hole of the elastic chuck. When the end cover is tightened, the end cover pushes the wire drawing die, and then drives the conical section of the elastic chuck to gradually wedge tightly with the conical inclined surface of the inner cavity of the rotating body. And as the side opening of the conical section of the elastic chuck shrinks, finally the wire drawing die can be clamped and fixed. In this fixing method, the wire drawing die and the conical section of the elastic chuck are clamped and fixed by surface contact, and the fixing effect is good and the edge of the wire drawing die can be avoided from being damaged.

[0019] 2) The utility model sleeves the spring on the second cylindrical section. When the end cover is tightened, the wire drawing die is clamped and fixed. At this time, the spring is in a compressed state. After the polishing is completed, when the end cover is unscrewed, under the action of the spring force, the elastic chuck pops up upward and loosens the wire drawing die, which is convenient for taking out the wire drawing die.

[0020] 3) An arc-shaped waist hole is provided on the adjustment back plate of the present utility model. The adjustment back plate is fixedly connected to the wire polishing machine through bolts passing through the arc-shaped waist hole. The angle of the positioning device can be adjusted by rotating the adjustment back plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0022] Figure 1 is a schematic structural diagram of a wire drawing die clamping and positioning device of a wire polishing machine of the present utility model.

[0023] Figure 2 is a schematic diagram of a rotating body of the present utility model.

[0024] Figure 3 is a three-dimensional view of an elastic chuck of the present utility model.

[0025] Figure 4 is a front view of an elastic chuck of the present utility model.

[0026] Figure 5 is Figure 4 a cross-sectional view of

[0027] Figure 6 is a cross-sectional view of an end cap of the present utility model.

[0028] Figure 7 is a top view of an end cap of the present utility model.

[0029] Figure 8 is a schematic diagram of an adjustment back plate of the present utility model.

[0030] DESCRIPTION OF THE REFERENCE NUMERALS:

[0031] In the figures: 1. Rotating body; 2. End cap; 3. Bearing; 4. Rotating pulley; 5. Base; 6. Elastic chuck; 7. Special wire for wire polishing; 8. Adjustment back plate; 9. Spring; 10. Guide sleeve; 11. Retaining ring; 12. Wire drawing die; 13. Wire polishing machine; 21. Notch; 61. Conical section; 62. First cylindrical section; 63. Second cylindrical section; 64. First stepped hole; 65. Second stepped hole; 66. Through hole; 67. Opening; 68. Inner cavity; 69. Annular clamping groove; 81. Arc-shaped waist hole; 641. Annular groove; 671. Rectangular opening; 672. Arc-shaped opening; 681. First cylindrical cavity; 682. Conical cavity; 683. Second cylindrical cavity DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0033] The specific embodiments of the present utility model will be further described below in conjunction with the accompanying drawings:

[0034] Embodiment 1

[0035] As Figures 1 to 8 shown, the present utility model provides a clamping and positioning device for a wire drawing die of a wire polishing machine, which includes a rotating body 1, an end cover 2, a bearing 3 and a rotating pulley 4. The inner cavity 68 of the rotating body has a conical inclined surface. The upper end of the rotating body 1 is threadedly connected to the end cover 2. The bearing 3 is sleeved on the rotating body 1. The bearing 3 is fixedly connected to the wire polishing machine 13 through a base 5. The rotating pulley 4 is located below the bearing 3 and is threadedly connected to the rotating body 1. The positioning device further includes an elastic chuck 6.

[0036] The elastic chuck 6 is composed of a conical section 61, a first cylindrical section 62 and a second cylindrical section 63 connected in sequence. The small end of the conical section 61 is connected to the first cylindrical section 62, and the diameter of the small end of the conical section 61 is greater than the diameter of the first cylindrical section 62. The diameter of the first cylindrical section 62 is greater than the diameter of the second cylindrical section 63. A first stepped hole 64 and a second stepped hole 65 are sequentially arranged in the conical section 61, and the diameter of the first stepped hole 64 is greater than the diameter of the second stepped hole 65. Through holes 66 are provided on both the first cylindrical section 62 and the second cylindrical section 63; a plurality of openings 67 are provided on the side surface of the conical section 61, and the openings 67 extend to the side surface of the first cylindrical section 62. The elastic chuck 6 is slidably arranged in the inner cavity 68 of the rotating body, and the side surface of the conical section 61 can contact the conical inclined surface of the inner cavity 1.

[0037] The opening 67 is composed of a rectangular opening 671 and an arc-shaped opening 672. The arc-shaped opening 672 is located at the bottom of the rectangular opening 671. The number of openings 67 is 4. A notch 21 is provided on the side of the end cover 2 to facilitate the entry of the special wire 7 for wire polishing.

[0038] A clamping and positioning device for a wire drawing die of a wire polishing machine further includes an adjustment back plate 8. An arc-shaped waist hole 81 is provided on the adjustment back plate 8. The bearing 3 is fixedly connected to the adjustment back plate 8 through a base 5. The adjustment back plate 8 is fixedly connected to the wire polishing machine 13 by bolts passing through the arc-shaped waist hole 81. The angle of the positioning device can be adjusted by rotating the adjustment back plate 8.

[0039] During use, the wire drawing die 12 is placed in the first stepped hole 64 of the elastic chuck. When the end cover 2 is tightened, the end cover 2 pushes the wire drawing die 12, thereby driving the conical section 61 of the elastic chuck to gradually wedge tightly with the conical inclined surface of the inner cavity of the rotating body. And as the side openings 67 of the conical section of the elastic chuck shrink, the wire drawing die 12 can finally be clamped and fixed. By using the arc-shaped waist hole 81, the angle of the positioning device can be adjusted by rotating the adjustment back plate 8.

[0040] Embodiment 2

[0041] AsFigures 1 to 8 As shown, the parts of this embodiment that are the same as those of the above embodiment will not be elaborated again. The different parts are as follows: The inner cavity 68 of the rotating body is successively composed of a first cylindrical cavity 681, a conical cavity 682, and a second cylindrical cavity 683. The inner surface of the first cylindrical cavity 681 is provided with threads and is in threaded connection with the end cover 2.

[0042] This embodiment further includes a spring 9 and a guide sleeve 10. The spring 9 is sleeved on the second cylindrical section 63 and is located in the second cylindrical cavity 683. The upper end of the spring 9 can be stuck by the top of the second cylindrical cavity 683 and the step formed by the second cylindrical section 63 and the first cylindrical section 62. The guide sleeve 10 is sleeved on the second cylindrical section 63. The top end of the guide sleeve 10 contacts the spring 9, and the guide sleeve 10 is in threaded connection with the inner surface of the second cylindrical cavity 683. An annular groove 641 is provided on the bottom side of the first stepped hole 64, and an annular groove 69 is provided near the bottom end of the second cylindrical section 63, and a retaining ring 11 is arranged on the annular groove 69. The spring 9 in this embodiment is a disc spring.

[0043] During use, place the wire drawing die 12 in the first stepped hole 64 of the elastic chuck. When tightening the end cover 2, the end cover 2 pushes the wire drawing die 12, thereby driving the conical section 61 of the elastic chuck to gradually wedge tightly with the conical inclined surface of the inner cavity of the rotating body. At this time, the spring 9 is in a compressed state. As the side opening 67 of the conical section of the elastic chuck shrinks, the wire drawing die 12 can finally be clamped and fixed. After polishing is completed, when the end cover 2 is unscrewed, the spring 9 rebounds, causing the elastic chuck 6 to pop up upward, and the side opening 67 of the conical section 61 is restored, that is, the wire drawing die 12 is loosened, facilitating the removal of the wire drawing die 12. The retaining ring 11 on the annular groove 69 prevents the elastic chuck 6 from popping out of the rotating body 1 and falling off.

[0044] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, and these simple modifications all fall within the protection scope of the present invention. In addition, it should be noted that among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. In addition, any combination can be made between various different embodiments of the present invention as long as it does not violate the idea of the present invention, and it should also be regarded as the content disclosed by the present invention.

Claims

1. A wire drawing die clamping and positioning device for a wire polishing machine, comprising a rotating body, an end cover, a bearing and a rotating pulley; the inner cavity of the rotating body has a conical inclined surface, the upper end of the rotating body is threadedly connected to the end cover, the bearing sleeve is arranged on the rotating body, the bearing is fixedly connected to the wire polishing machine through the base, the rotating pulley is located below the bearing and is threadedly connected to the rotating body; characterized in that, Also included is an elastic collet; The elastic chuck is composed of a structure consisting of a conical section, a first cylindrical section and a second cylindrical section connected in sequence, the small end of the conical section is connected to the first cylindrical section, and the diameter of the small end of the conical section is larger than the diameter of the first cylindrical section, and the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section; the conical section is provided with a first stepped hole and a second stepped hole in sequence, and the diameter of the first stepped hole is larger than the diameter of the second stepped hole; the first cylindrical section and the second cylindrical section are both provided with through holes; the side of the conical section is provided with a plurality of openings, and the openings extend to the side of the first cylindrical section; The elastic clamp is slidably arranged in the inner cavity of the rotating body, and the side surface of the conical section can contact the conical inclined surface of the inner cavity.

2. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: The inner cavity of the rotating body is composed of a first cylindrical cavity, a conical cavity and a second cylindrical cavity in sequence; the inner surface of the first cylindrical cavity is provided with threads, which are threadedly connected with the end cover.

3. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 2, characterized in that: It also includes a spring and a guide sleeve, wherein the spring is sleeved on the second cylindrical section, and the spring is located in the second cylindrical cavity, and the upper end of the spring can be clamped by the top of the second cylindrical cavity and the step formed by the second cylindrical section and the first cylindrical section; the guide sleeve is sleeved on the second cylindrical section, the top end of the guide sleeve is in contact with the spring, and the guide sleeve is threadedly connected to the inner surface of the second cylindrical cavity.

4. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: An annular groove is provided on the bottom side of the first stepped hole, an annular groove is provided near the bottom end of the second cylindrical section, and a retaining ring is provided on the annular groove.

5. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 3, characterized in that: The spring is a disc spring.

6. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: The opening consists of a rectangular opening and an arc-shaped opening, and the arc-shaped opening is located at the bottom of the rectangular opening.

7. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: The number of the openings is 4, 6 or 8.

8. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: The side of the end cover is provided with a notch.

9. The wire drawing die clamping and positioning device of a wire polishing machine according to claim 1, characterized in that: A wire drawing die clamping and positioning device for a wire polishing machine also includes an adjusting back plate, on which an arc-shaped waist hole is provided, a bearing is fixedly connected to the adjusting back plate through a base, and the adjusting back plate is fixedly connected to the wire polishing machine through bolts passing through the arc-shaped waist hole.

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