Tool for clamping and fixing machine base

Abstract

The utility model discloses a tool for clamping and fixing a machine base. The tool comprises a chuck and three clamping jaws. A spring seat is arranged on the clamping jaw; a plurality of elastic pins are arranged on the spring seat; the elastic pins are evenly distributed in the circumferential direction. An opening fixing ring is coaxially arranged on the chuck, and the spring seat is located between the chuck and the opening fixing ring; a plurality of notches are formed in the inner wall of the mouth fixing ring; a positioning block is arranged in the notch; a ball spring plunger is arranged between every two adjacent notches. The opening fixing ring facilitates position positioning and clamping of the machine base, the positioning plate can further provide support for the machine base, and the machining precision can be improved. The clamping position of the machine base is changed into the bottom and the opening through the arrangement of the spring base, clamping is more stable, in the clamping process of the elastic pin, pre-tightening force is provided for centering adjustment firstly, then the spring base conducts clamping, and scratches or abrasion caused by movement of the machine base in the direct clamping process can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the clamping tool, especially to a kind of clamping and fixing tooling of base. BACKGROUND

[0002] Base (the shell of equipment such as motor, water pump) is integrally formed by casting, in order to increase the assembly accuracy of base end face and the sealing property after assembly, the end face of base is often milled. In order to efficiently and accurately mill the end face of base, a special processing tooling is usually used, such as chuck tooling, which is a commonly used low-cost tooling. However, for the base with long total length and thin wall thickness, the conventional claw can only clamp the bottom due to the long length of workpiece, which may cause product shaking and falling during turning, thereby increasing the risk of workpiece scrap.

[0003] The patent document with the publication number CN216359315U discloses a chuck-type hub tooling clamp, belonging to the field of machine tool clamps, comprising a rotating table arranged on a numerical control machining center, the rotating table is provided with a three-jaw chuck capable of clamping a hub flange, the rotating table is slidably connected with a plurality of heightening blocks, the length direction of the heightening blocks is arranged along the diameter direction of the rotating table, the heightening blocks can slide along the diameter direction of the rotating table, one side of the heightening blocks away from the rotating table is arranged in a stepped manner, and the position of the heightening blocks close to the rotating table is provided with a locking assembly.

[0004] Based on the design of aesthetics and practicality, in addition to the end face of the mounting ear being a plane, the remaining positions of the outer wall often have various asymmetric protrusions or curved surfaces, and the tail part of the base often has a curved surface and process features such as a through hole. Therefore, when the above-mentioned patent is used to clamp the base, the position of the base needs to be carefully adjusted by hand, so that the mounting ear is directly and tightly attached to the lifting column to play a supporting and positioning role. Although it can have better clamping and fixing effect, the clamping process is not convenient, which reduces the overall processing efficiency. UTILITY MODEL CONTENTS

[0005] In order to overcome the technical problems in the prior art that the base with long length and thin wall thickness is unstable on the existing three-jaw chuck, and the height of the clamping claw is lengthened to increase the lifting column for support, which is not convenient for manual clamping, resulting in low processing efficiency. One purpose of the utility model is to provide a tooling for clamping and fixing base, a mouth part fixing ring that abuts against the outer wall of the mouth part of the base is arranged on the outside of the clamping claw, the inner wall of the mouth part fixing ring is provided with a notch for accommodating the mounting ear, the position of the base is quickly positioned through the notch, and the mounting ear is stably supported by the positioning plate arranged in the notch, so as to achieve the purpose of quick and stable clamping.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme realizes: a kind of clamping and fixed tooling of base, including chuck and three radial sliding connection on the chuck jaw;Each The jaw is respectively provided with arc spring seat;Multiple elastic pins are provided on the spring seat;Each The elastic pin is evenly distributed along the circumferential direction of the chuck;Wherein, the chuck is coaxially provided with mouth fixed ring, and the spring seat is located between the chuck and the mouth fixed ring;Multiple notches are provided on the inner wall of the mouth fixed ring;Positioning block for supporting mounting ear on the base is provided in the notch;Two ball spring plungers for abutting against the outer wall of the base are provided between the adjacent two notches.

[0007] When clamping the base, the base is quickly positioned through the notch, the time of manually adjusting the base is shortened, and the positioning block supports the mounting ear, which prevents the mounting ear from shaking during milling of the mouth end face, and helps to improve milling precision and quality.

[0008] Further, three mouth ring positioning frames are provided on the chuck;Three groups of mounting holes respectively opposite to the mouth ring positioning frames are provided on the mouth fixed ring;Each group of mounting holes respectively includes a countersunk hole and a second positioning hole.

[0009] Specifically, a threaded hole opposite to the countersunk hole is provided at the central position of the end of the mouth ring positioning frame away from the chuck;A first positioning hole opposite to the second positioning hole is provided at the end of the mouth ring positioning frame away from the chuck.

[0010] The second positioning hole is a threaded hole or a light hole, which facilitates the position adjustment of the mouth fixed ring during assembly, and a positioning pin can also be inserted between the first positioning hole and the second positioning hole to increase the stability of installation.

[0011] Preferably, the mouth ring positioning frame is a T-shaped support rod;The mouth ring positioning frame is arranged between the adjacent two jaws.

[0012] Further, a spring seat support is respectively arranged at the end of each jaw away from the chuck;A pad block is arranged at the end of the spring seat support away from the jaw;The spring seat is arranged at the end of the pad block away from the spring seat support.

[0013] Specifically, the pad block can be selectively mounted on the spring seat support;The spring seat can be selectively mounted on the pad block or the spring seat support.

[0014] By prolonging the clamping height of the spring seat support, more stable clamping force can be provided for the base, which helps to reduce the rate of defective products and improve production efficiency.

[0015] Further, the elastic pin is connected with an elastic ejector pin in the radial sliding direction of the chuck; a first spring is arranged between the elastic ejector pin and the elastic pin, and the elastic force of the first spring is used to make the elastic ejector pin slide to the middle part of the chuck; the end of the elastic ejector pin is selectively located in the spring seat or protrudes from the spring seat.

[0016] The elastic ejector pin first provides a pre-clamping force for the machine base, so that the position of the machine base is adjusted, and then the spring seat clamps the machine base, so that scratches or abrasions of the machine base caused by movement during direct clamping can be avoided.

[0017] Further, the ball spring plunger is provided with elastic balls used to abut against the outer wall of the machine base; a second spring is arranged between the elastic balls and the ball spring plunger; and the elastic force of the second spring is used to make the elastic balls protrude from the inner wall of the mouth fixing ring.

[0018] The elastic balls facilitate the insertion or removal of the machine base, and reduce the abrasion of the mouth fixing ring and the machine base.

[0019] Specifically, the positioning block is arranged on the side of the mouth fixing ring facing the chuck.

[0020] Specifically, the clamping jaw comprises a standard clamping jaw and a non-standard clamping jaw arranged on the standard clamping jaw; the non-standard clamping jaw and the spring seat clamp the machine base at the same time.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] 1. By arranging the mouth fixing ring, the position of the machine base is positioned and clamped, which helps to shorten the manual operation time and improve the machining efficiency; in addition, the positioning plate can also provide support for the machine base, which increases the stability during end face milling, and further helps to improve the machining precision.

[0023] 2. By arranging the spring seat, the clamping position of the machine base is changed from the bottom to the bottom and the mouth, and the clamping position close to the center of gravity of the machine base helps to clamp more stably; in addition, the elastic pin in the spring seat first provides a pre-tightening force to adjust the position of the machine base during clamping, and then the spring seat clamps, so that scratches or abrasions of the machine base caused by movement during direct clamping can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of the utility model;

[0025] Figure 2 It is an exploded view of the parts of the utility model;

[0026] Figure 3 It is the structure schematic view of the clamping jaw and spring seat of the utility model;

[0027] Figure 4 It is the structure schematic view of the mouth part fixing ring of the utility model;

[0028] Figure 5 It is the structure schematic view of the elastic pin and ball spring plunger of the utility model;

[0029] Figure 6 It is the structure schematic view of the utility model's machine base.

[0030] In the drawing: 1, chuck;11, clamping jaw;21, spring seat support;22, spring seat;221, pin mounting hole;23, cushioning block;24, elastic pin;241, elastic center pin;31, mouth ring positioning frame;311, threaded hole;312, first positioning hole;32, mouth part fixing ring;321, notch;322, plunger mounting hole;323, counterbore;324, second positioning hole;33, positioning block;34, ball spring plunger;341, elastic ball;4, machine base;41, mounting lug;42, protrusion;43, arc surface. DETAILED DESCRIPTION

[0031] In the following, the utility model is further described in combination with the drawings and specific embodiments, and it should be noted that the following described embodiments or technical features can be combined to form new embodiments without conflict.

[0032] In the description of the utility model, it should be noted that for the orientation words, such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the utility model.

[0033] In addition, the terms "first" and "second" are used for description purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the "first" and "second" features can explicitly or implicitly include one or more features, and in the description of the utility model, the meaning of "several" is two or more, unless otherwise specifically limited.

[0034] In the utility model, except another explicit stipulation and limitation, such as the terminology "arrange", "install" and so on should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, can be directly connected, also can be connected through intermediate medium, can be two elements internal intercommunication.

[0035] Referring to Figures 1-6 A kind of tooling of clamping and fixed base, including chuck 1 and three radial sliding connections in the chuck 1 on jaw 11;The jaw 11 includes standard jaw and non-standard jaw arranged on the standard jaw;The non-standard jaw end away from the chuck 1 is sequentially provided with spring seat support 21, pad block 23, spring seat 22 along the axial direction of the chuck 1;The spring seat 22 is circular arc shape towards the center of the chuck 1;Five evenly distributed pin mounting holes 221 are provided on the spring seat 22;Each pin mounting hole 221 is evenly distributed along the circumferential direction of the chuck 1.

[0036] The pad block 23 can be selectively installed on the spring seat support 21;The spring seat 22 can be selectively installed on the pad block 23 or the spring seat support 21.

[0037] Each pin mounting hole 221 is provided with elastic pin 24;Elastic pin 24 is slidably connected with elastic thimble 241 along the radial direction of the chuck 1;First spring is arranged between the elastic thimble 241 and the elastic pin 24, and the elastic force of the first spring is used to make the elastic thimble 241 slide to the middle of the chuck 1;The end of the elastic thimble 241 can be selectively located in the spring seat 22 or protrude therefrom.

[0038] T-shaped mouth ring positioning frame 31 is arranged between two adjacent jaws 11 on the chuck 1;Three mouth ring positioning frames 31 are provided with mouth fixing ring 32 coaxially arranged with the chuck 1;The spring seat 22 is located between the chuck 1 and the mouth fixing ring 32;The inner wall of the mouth fixing ring 32 is provided with three notches 321;Two plunger mounting holes 322 are arranged between two adjacent notches 321.

[0039] Ball spring plunger 34 for abutting against the outer wall of base 4 is installed in plunger mounting hole 322;Elastic ball 341 for abutting against the outer wall of base 4 is arranged on ball spring plunger 34;Second spring is arranged between the elastic ball 341 and the ball spring plunger 34;The elastic force of the second spring is used to make the elastic ball 341 protrude from the inner wall of the mouth fixing ring 32.

[0040] The mouth fixed ring 32 is provided with three positioning blocks 33 at one end of the chuck 1; the positioning blocks 33 are opposite to the notches 321; the positioning blocks 33 are used to abut against the mounting ears 41 of the mouth of the machine base 4.

[0041] The mouth fixed ring 32 is provided with three groups of mounting holes which are opposite to the mouth ring positioning frame 31; each group of the mounting holes comprises a countersunk hole 323 and a second positioning hole 324; the mouth ring positioning frame 31 is provided with a threaded hole 311 opposite to the countersunk hole 323 at the central position of one end away from the chuck 1; the mouth ring positioning frame 31 is provided with a first positioning hole 312 opposite to the second positioning hole 324 at one end away from the chuck 1.

[0042] As shown in the figure, the mouth of the machine base 4 has a protrusion 42 and an arc surface 43. Figure 6

[0043] When clamping, the machine base 4 is inserted into the mouth fixed ring 32, and the mounting ears 41 are made to be opposite to the notches 321 by rotating the machine base 4; after the machine base 4 is completely inserted, the mounting ears 41 abut against the positioning blocks 33. Then, the clamping jaws 11 are gradually clamped to the machine base 4; in this process, the elastic pins 241 first clamp the machine base 4 by using the elastic force to make the machine base 4 be centered, and then, with the gradual compression of the elastic pins 241 into the spring seats 22, the spring seats 22 clamp the machine base 4. Finally, the cutting operation can be carried out.

[0044] The above is only a specific embodiment of the present application, but the technical features of the present application are not limited to this; any person skilled in the art makes changes or modifications in the field of the present application, which are covered in the patent range of the present application.​

Claims

1. A tooling for clamping and securing a machine bed, characterized by: The chuck comprises a chuck body and three claws connected to the chuck body in a radial sliding manner; each of the claws is provided with an arc-shaped spring seat; the spring seat is provided with a plurality of elastic pins; the elastic pins are uniformly distributed along the circumferential direction of the chuck; a mouth fixing ring is coaxially arranged on the chuck, and the spring seat is located between the chuck and the mouth fixing ring; the inner wall of the mouth fixing ring is provided with a plurality of notches; a positioning block for supporting the mounting lug of the machine base is arranged in the notch; two ball spring plungers for abutting against the outer wall of the machine base are arranged between the two adjacent notches.

2. The tooling of claim 1, wherein: The chuck is provided with three mouth ring positioning frames; the mouth fixing ring is provided with three groups of mounting holes opposite to the mouth ring positioning frames; each group of the mounting holes comprises a countersunk hole and a second positioning hole.

3. The tooling of claim 2, wherein: A threaded hole opposite to the countersunk hole is arranged at the central position of the end of the mouth ring positioning frame away from the chuck; a first positioning hole opposite to the second positioning hole is arranged at the end of the mouth ring positioning frame away from the chuck.

4. The tooling of claim 2, wherein: The mouth ring positioning frame is a T-shaped support rod; the mouth ring positioning frame is arranged between the two adjacent claws.

5. The tooling of any one of claims 1-4, wherein: The end of each of the claws away from the chuck is provided with a spring seat support; the end of the spring seat support away from the claw is provided with a pad block; the spring seat is arranged at the end of the pad block away from the spring seat support.

6. The tooling of claim 5, wherein: The pad block is selectively mounted on the spring seat support; the spring seat is selectively mounted on the pad block or the spring seat support.

7. The tooling of any one of claims 1-4, wherein: The elastic pin is slidably connected with an elastic thimble in the radial direction of the chuck; a first spring is arranged between the elastic thimble and the elastic pin, and the elastic force of the first spring is used to make the elastic thimble slide to the middle part of the chuck; the end of the elastic thimble is selectively located in the spring seat or protrudes from the spring seat.

8. The tooling of any one of claims 1-4, wherein: The ball spring plunger is provided with an elastic ball for abutting against the outer wall of the machine base; a second spring is arranged between the elastic ball and the ball spring plunger; the elastic force of the second spring is used to make the elastic ball protrude from the inner wall of the mouth fixing ring.

9. The tooling of any one of claims 1-4, wherein: The positioning block is arranged on the side of the mouth fixing ring facing the chuck.

10. The tooling of any one of claims 1-4, wherein: The claw comprises a standard claw and a non-standard claw arranged on the standard claw; the non-standard claw and the spring seat simultaneously clamp the machine base.

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