Clamp capable of being replaced quickly and rotating at high speed

Abstract

The utility model discloses a quick-change high-speed rotating clamp which comprises a mandrel body, a machine tool spindle matched with the mandrel body is arranged on one side of the mandrel body, a mandrel pull rod is arranged on the other side of the mandrel body, a taper lifting pin is arranged at the end of the machine tool spindle, and a telescopic claw is sleeved on the machine tool spindle. An ejector rod is arranged on the side face of the telescopic claw, and a movable pin and a mandrel flange plate are sequentially arranged outside the taper ejector pin. According to the utility model, the rubber expansion sleeve matched with the product is quickly switched and positioned, so that the fixture can be used for switching the processed and produced product within a set clamping range, and the fixture can be immediately put into production on the premise of ensuring the precision of the fixture; and meanwhile, the whole clamp can be subjected to quick change switching with the nose end of the main shaft of the machine tool, in the quick change process, quick positioning and pre-clamping or loosening are carried out through high-precision matching between the cones, and then final locking or loosening is carried out through a quick-change locking screw.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a fast-changing high-speed rotating clamp. Background Art

[0002] A fixture is a device used to fix the object to be processed during the mechanical manufacturing process so that it occupies the correct position for construction or inspection. However, the fixtures in the prior art have the following defects:

[0003] 1. Existing high-speed rotating fixtures for machine tools usually use claw-type chucks such as three-jaw, four-jaw, and six-jaw chucks to support the inner hole of the part or clamp the outer circle of the part for chip cutting. Because the contact area between the jaws of the claw-type chuck and the workpiece is too limited, the parts are deformed after uneven force.

[0004] 2. When the existing conventional jaw chuck rotates at high speed, especially when the speed is higher than 1000 rpm, the centrifugal force increases significantly. The jaws of the conventional chuck will reduce the stability and clamping force of the chuck itself on the parts due to the centrifugal force.

[0005] 3. During the production process of existing machine tool chucks, if the types and sizes of the parts being produced and processed change frequently and the chuck needs to be replaced, it is necessary to manually replace it and adjust the chuck's own accuracy. This takes a long time to switch and is relatively inefficient, making it difficult to meet the increasingly modern and automated intelligent production needs. Utility Model Content

[0006] The purpose of the utility model is to provide a fast-changing high-speed rotating fixture, which can not only realize any switching of the processed products within the set clamping range of the fixture itself by quickly switching the rubber expansion sleeve and positioning matched with the product, but also can be put into production immediately under the premise of ensuring the accuracy of the fixture itself; at the same time, the fixture as a whole can be quickly changed and switched with the nose end of the machine tool spindle. During the quick-changing process, the high-precision cooperation between the cones is used to quickly position and pre-clamp or loosen, and then the quick-changing locking screw is used for final locking or loosening.

[0007] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0008] A fast-changing high-speed rotating fixture comprises:

[0009] A spindle body, a machine tool spindle matching the spindle body is arranged on one side of the spindle body, a spindle pull rod is arranged on the other side of the spindle body, a tapered ejector pin is arranged at the end of the machine tool spindle, a telescopic claw is sleeved on the machine tool spindle, a ejector rod is arranged on the side of the telescopic claw, a movable pin and a spindle flange are arranged on the outside of the tapered ejector pin in sequence, a first spring is arranged at the end of the tapered ejector pin, a rubber expansion sleeve is also arranged on the spindle flange, and the rubber expansion sleeve is installed on the spindle flange through a waist nut.

[0010] The above-mentioned quick-change high-speed rotating fixture, wherein a mandrel flange sub-disc is provided on the side of the mandrel flange.

[0011] The above-mentioned fast-changing high-speed rotating fixture, wherein the waist-shaped nut is installed on the core shaft flange according to a setting by means of a cylindrical head hexagon socket screw and a flange nut.

[0012] The above-mentioned quick-change high-speed rotating fixture, wherein the core shaft flange is also provided with a stop pin for limiting the core shaft flange.

[0013] The above-mentioned quick-change high-speed rotating clamp, wherein a disc spring is provided on the side of the waist-shaped nut.

[0014] In the above-mentioned quick-change high-speed rotating fixture, a sliding cylinder for limiting the position of the push rod is provided on the side of the push rod.

[0015] The above-mentioned fast-changing high-speed rotating clamp, wherein a tail end compression spring is arranged on the side of the telescopic claw.

[0016] The utility model has at least the following beneficial effects:

[0017] In the utility model, a fast-changing high-speed rotating clamp is realized. By quickly switching the rubber expansion sleeve and positioning matched with the product, the clamp itself can be switched to any product to be processed within the set clamping range, and can be put into production immediately under the premise of ensuring the accuracy of the clamp itself; at the same time, the clamp as a whole can be quickly changed and switched with the nose end of the machine tool spindle. During the quick-changing process, the high-precision cooperation between the cones is used to quickly position and pre-clamp or loosen, and then the quick-changing locking screw is used for final locking or loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the utility model for quickly replacing a high-speed rotating fixture;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the utility model for quickly replacing a high-speed rotating fixture.

[0021] Description of Figure Numbers:

[0022] 1. Mandrel body; 2. Machine tool spindle; 3. Mandrel pull rod; 4. Telescopic claw; 5. Ejector rod; 6. Movable pin; 7. Taper ejector pin; 8. First spring; 9. Mandrel flange; 10. Mandrel flange sub-disc; 11. Disc spring; 12. Waist nut; 13. Cylindrical head hexagon socket screw; 14. Flange nut; 15. Rubber expansion sleeve; 17. Stop pin; 18. Slide; 19. Tail end compression spring. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the internal connection of two components; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0026] Please refer to Figure 1 to Figure 2 As shown, an embodiment of the utility model provides a fast-changing high-speed rotating fixture, comprising: a spindle body 1, a machine tool spindle 2 matching the spindle body 1 is arranged on one side of the spindle body 1, a spindle pull rod 3 is arranged on the other side of the spindle body 1, a taper ejector pin 7 is arranged at the end of the machine tool spindle 2, a telescopic claw 4 is sleeved on the machine tool spindle 2, a ejector rod 5 is arranged on the side of the telescopic claw 4, a movable pin 6 and a spindle flange 9 are arranged on the outside of the taper ejector pin 7 in sequence, a first spring 8 is arranged at the end of the taper ejector pin 7, a rubber expansion sleeve 15 is also arranged on the spindle flange 9, and the rubber expansion sleeve 15 is installed on the spindle flange 9 through a waist nut 12;

[0027] Please refer to Figure 1 to Figure 2 As shown, a spindle flange sub-disc 10 is arranged on the side of the spindle flange 9 .

[0028] Please refer to Figure 1 to Figure 2 As shown, the waist nut 12 is installed on the core shaft flange 9 according to the requirements by means of a cylindrical head hexagon socket screw 13 and a flange nut 14.

[0029] Please refer to Figure 1 to Figure 2 As shown, a stop pin 17 for limiting the position of the core shaft flange 9 is also provided on the core shaft flange 9 .

[0030] Please refer to Figure 1 to Figure 2 As shown, a disc spring 11 is provided on the side of the waist-shaped nut 12.

[0031] Please refer to Figure 1 to Figure 2 As shown, a slide cylinder 18 for limiting the push rod 5 is provided on the side of the push rod 5 .

[0032] Please refer to Figure 1 to Figure 2 As shown, a tail end compression spring 19 is provided on the side of the telescopic claw 4 .

[0033] The working principle of the utility model is: in addition to switching the rubber expansion sleeve 15 that matches the product, the clamp itself can realize the rapid replacement of corresponding accessories within the set clamping range, which is easy to operate and can be put into production immediately while ensuring the accuracy of the clamp itself; at the same time, the clamp as a whole can be quickly changed and switched with the nose end of the machine tool spindle 2, and during the quick-change process, the high-precision cooperation between the cones is used to quickly position and pre-clamp or loosen, and then the quick-change locking screw is used for final locking or loosening.

[0034] The above description shows and describes several preferred embodiments of the utility model, but as mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A fast-changing high-speed rotating fixture, characterized in that: include: A spindle body (1), a machine tool spindle (2) matching the spindle body (1) is arranged on one side of the spindle body (1), a spindle pull rod (3) is arranged on the other side of the spindle body (1), a tapered ejector pin (7) is arranged at the end of the machine tool spindle (2), a telescopic claw (4) is sleeved on the machine tool spindle (2), a ejector pin (5) is arranged on the side of the telescopic claw (4), a movable pin (6) and a spindle flange (9) are arranged on the outside of the tapered ejector pin (7) in sequence, a first spring (8) is arranged at the end of the tapered ejector pin (7), a rubber expansion sleeve (15) is also arranged on the spindle flange (9), and the rubber expansion sleeve (15) is installed on the spindle flange (9) through a waist nut (12).

2. A fast-changing high-speed rotating fixture according to claim 1, characterized in that: A core shaft flange sub-disc (10) is arranged on the side of the core shaft flange (9).

3. A fast-changing high-speed rotating fixture according to claim 2, characterized in that: The waist-shaped nut (12) is fixedly mounted on the spindle flange (9) by means of a cylindrical head hexagon socket screw (13) and a flange nut (14).

4. A fast-changing high-speed rotating fixture according to claim 3, characterized in that: The spindle flange (9) is also provided with a stop pin (17) for limiting the spindle flange (9).

5. A fast-changing high-speed rotating fixture according to claim 4, characterized in that: A disc spring (11) is arranged on the side of the waist-shaped nut (12).

6. A fast-changing high-speed rotating fixture according to claim 5, characterized in that: A slide cylinder (18) for limiting the position of the push rod (5) is arranged on the side surface of the push rod (5).

7. A fast-changing high-speed rotating fixture according to claim 6, characterized in that: A tail end compression spring (19) is arranged on the side of the telescopic claw (4).

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