TWM607288U - Precision collet - Google Patents

Abstract

This creation relates to a precision collet, which includes: a precision collet body, which includes a plurality of clamping plates and a clamping hole, the clamping hole formed by the plurality of clamping plates; at least one elastic part, each The elastic part is connected between two adjacent clamping plates; and a plurality of adhesive layers, each of the adhesive layers is bonded between an elastic part and a clamping plate.

Description

Precision collet

This creation is about a precision collet.

Usually, the chuck is installed on the spindle of a machine tool to clamp a workpiece (such as a tool or a workpiece to be processed).

The conventional chuck has a plurality of axially extending slots and a clamping hole that extends from the axial direction. The chuck body has the ability to deform radially through the notches on the body of the chuck, and thus can be clamped and inserted into the chuck. Hold the workpiece in the hole. The conventional chuck is made of metal as a whole. In the cutting process, vibration and noise will be generated due to the contact between the tool and the workpiece, and the vibration of the tool will lead to reaming and the clamping force will be reduced. Furthermore, the conventional chuck uses multiple notches and designs multiple notches with different axial lengths to meet the requirements of clamping force and radial deformation capability, resulting in more complicated processing and weak overall structural strength of the chuck , The service life is shorter. In addition, the metal chuck undergoes long-term radial expansion and contraction deformation of the slot, and its elastic recovery force will gradually weaken, resulting in a reduction in the clamping force.

Therefore, it is necessary to provide a novel and advanced precision collet to solve the above-mentioned problems.

The main purpose of this creation is to provide a precise collet that can hold a workpiece firmly.

In order to achieve the above objective, the present invention provides a precision collet, including: a precision collet body, which includes a plurality of clamping plates and a clamping hole, the plurality of clamping plates constitute the clamping hole; at least one elastic part , Each of the elastic parts is connected between two adjacent clamping plates; and a plurality of adhesive layers, each of the adhesive layers is bonded between an elastic part and a clamping plate.

The following examples are only used to illustrate the possible implementation of this creation, but it is not intended to limit the scope of the creation to be protected, and it is first stated.

Please refer to FIGS. 1 to 7, which show a preferred embodiment of this creation. The precision collet 1 of this creation includes a precision collet body 10, at least one elastic part 20 and a plurality of bonding layers 30.

The precision collet body 10 includes a plurality of clamping plates 11 and a clamping hole 12, the plurality of clamping plates 11 constitute the clamping hole 12, the clamping hole 12 for a workpiece 2 or a spindle to pass through , The workpiece 2 can be a tool or a workpiece; each of the elastic portions 20 is connected between two adjacent clamping plates 11; each of the adhesive layers 30 is adhered to an elastic portion 20 and a clip Between the holding pieces 11, each holding piece 11 and at least one of the elastic parts 20 have high bonding strength, long service life, high holding stability and shock resistance.

The precision collet 1 further includes a plurality of the elastic portions 20, the clamping hole 12 extends in an axial direction A, the plurality of clamping pads 11, the plurality of elastic portions 20 and the plurality of adhesive layers 30 are arranged in a circumferential direction B , The circumferential direction B extends around the axial direction A, the circumferential extension E1 of each elastic portion 20 is greater than or equal to 0.25 times the circumferential extension E2 of each of the clamping plates 11; in this embodiment, each of the The extension E1 of the elastic portion 20 is greater than or equal to 0.5 times the circumferential extension E2 of each of the clamping flaps 11; each of the elastic portions 20 and each of the clamping flaps 11 are fan-shaped and co-construct the clamping hole 12; Accordingly, the large amount of deformation of each of the elastic portions 20 makes the amount of radial movement of each clamping piece 11 is large, has a high clamping force and a high shock resistance effect, and improves the resistance during cutting.

Each of the adhesive layers 30 partially penetrates a clamping pad 11; specifically, each clamping pad 11 is made of a metal material, the metal material is alloy steel, which has flexibility, rigidity and wear resistance. It can reduce the degree of wear when the workpiece 2 is repeatedly disassembled and assembled. Each of the clamping pads 11 has at least one sandblasted end 13 that has been sandblasted, and each of the adhesive layers 30 penetrates into one of the sandblasted ends 13 of one of the clamping pads 11, so that each of the adhesive layers 30 Effectively penetrate into the capillary pores of the sandblasting end 13 of one of the clamping pads 11; preferably, each of the adhesive layer 30 includes a polyurethane primer (Polyurethane Primer), which adheres with very low viscosity The medicament allows each of the adhesive layers 30 to effectively penetrate into the capillary pores of one of the sandblasting ends 13; the thickness of at least one of the adhesive layers 30 ranges from 0.01 mm to 2.00 mm, preferably, at least one of the adhesive layers 30 A thickness range of 0.50mm to 1.00mm, the thickness of each of the adhesive layers 30 extends toward the circumferential direction B, so each of the adhesive layers 30 and one of the clamping plates 11 and one of the elastic portions The bonding strength of 20 is good.

Each of the elastic parts 20 is a polyurethane elastic piece; each of the elastic parts 20 is made of an elastic material, and the composition of the elastic material includes a polyester prepolymer (Polyester prepolymer), a polyurethane primer (Polyurethane Primer) and a curing agent, Polyester prepolymer (Polyester prepolymor) as the main raw material has high elastic properties. Polyurethane Primer improves the viscosity of each elastic part 20 and has high bonding strength; the curing agent includes liquid aromatic diamine polyurethane (aromatic Diamine polyurethane curative), low molecular weight polyurethane curing agent (low molecular weight polyurethane curative) at least one of; the curing agent includes liquid aromatic diamine polyurethane curative (aromatic diamine polyurethane curative) as the main raw material, the hardener content is greater than that of low molecular weight polyurethane curing (Low molecular weight polyurethane curative) hardener, so each of the elastic portions 20 has high elasticity, high viscosity, high wear resistance, long service life, high clamping force and high shock resistance.

Each of the clamping flaps 11 is provided with an end 14 in the axial direction A, each of the elastic portions 20 is provided with an end 21 in the axial direction A, and each of the clamping flaps 11 has an end 14 facing toward The axial direction A protrudes outwardly from the end 21 of each elastic part 20, and the end 21 of each elastic part 20 and the end 14 of the two adjacent clamping plates 11 form a space 15 to provide A space where each elastic portion 20 is compressed and deformed. One side of the end 14 of each clamping piece 11 corresponding to the clamping hole 12 is provided with a bevel angle 16 for the workpiece 2 to be smoothly inserted into the clamping hole 12; in other embodiments, as shown in FIG. 8 The ends of each clamping piece 11a and each elastic portion 20a are respectively flush, but not limited thereto. Furthermore, the precision collet 1a can be cylindrical or the precision collet 1 can be cone-shaped according to requirements (such as the type of workpieces 2 and 2a to be clamped).

In use, the precision collet 1, 1a can be installed on a tool holder 3 or a spindle chuck, so that the outer periphery of the precision collet 1, 1a is compressed, so that the plurality of elastic parts 20 are compressed and deformed, so that the plurality of clamping The blades 11, 11a move radially for clamping the workpieces 2, 2a, the workpiece 2 is a tool, and the workpiece 2a is a workpiece. In addition, please refer to Figures 9 to 11, the precision collet 1b can be installed in a spindle chuck 4, so that the inside of the precision collet 1b is compressed to expand and deform the plurality of elastic parts 20, so that the plurality of clamping The blade moves radially for clamping the workpiece 2b, which is the workpiece to be processed; specifically, the precision collet 1b is a reverse tension collet, which is tapered through the axial extension of the precision collet 1b The inclination formed by the clamping hole 12a is matched with the spindle chuck 4 and then the precision collet 1b is pulled back to clamp the workpiece 2b.

1, 1a, 1b: precision collet 2, 2a, 2b: Workpiece 3: Tool holder 4: Spindle chuck 10: Precision collet body 11, 11a: clamping plate 12, 12a: clamping hole 13: Sandblasted end 14, 21: End 15: space 16: lead angle 20, 20a: elastic part 30: Adhesive layer A: Axial B: Zhou Xiang E1, E2: Circumferential extension dimension

Figure 1 is a perspective view of a first preferred embodiment of the creation. Figure 2 is another perspective view of the creation of a first preferred embodiment. Figure 3 is an exploded view of a first preferred embodiment of the creation. Figure 4 is a view before creating a first preferred embodiment. Figure 5 is an exploded view of a first preferred embodiment of the creation, a tool holder and a workpiece. Figure 6 is a cross-sectional view of a first preferred embodiment of the creation, a tool holder and a workpiece. Figure 7 is another cross-sectional view of a first preferred embodiment, a tool holder, and a workpiece. Figure 8 is an exploded view of creating a second preferred embodiment and a workpiece. Figure 9 is a perspective view of a third preferred embodiment and a spindle chuck. Figure 10 is an exploded view of a third preferred embodiment and a spindle chuck. Figure 11 is a diagram of the use state of a third preferred embodiment of the creation.

1: Precision collet

10: Precision collet body

11: Clamping sheet

12: Clamping hole

15: space

20: Elastic part

30: Adhesive layer

A: Axial

B: Zhou Xiang

Claims (10)

A precision collet, including: A precision collet body, including a plurality of clamping plates and a clamping hole, the plurality of clamping plates constitute the clamping hole; At least one elastic portion, each of the elastic portions is connected between two adjacent clamping plates; and A plurality of adhesive layers, each of the adhesive layers is bonded between an elastic part and a clamping piece. The precision collet according to claim 1, wherein each of the adhesive layers partially penetrates one of the clamping plates. The precision collet according to claim 1, wherein each of the clamping plates is made of a metal material, each of the clamping plates has at least one sandblasted end portion, and each of the adhesive layers penetrates into one of the clamping plates. One of the flaps is in the sandblasted end. The precision collet according to claim 1, wherein each component of the adhesive layer includes a polyurethane primer (Polyurethane Primer). The precision collet according to claim 1, wherein the thickness of at least one adhesive layer ranges from 0.01 mm to 2.00 mm. The precision collet according to claim 1, wherein each of the elastic parts is a polyurethane elastic piece. The precision collet according to claim 1, further comprising a plurality of the elastic parts, the clamping hole extends in an axial direction, the plurality of clamping plates, the plurality of elastic parts and the plurality of adhesive layers are arranged in a circumferential direction, the The circumferential direction extends around the axial direction, and the circumferential extension dimension of each elastic part is greater than or equal to 0.25 times the circumferential extension dimension of each clamping blade. The precision collet according to claim 7, wherein each of the adhesive layer is partially penetrated into one of the clamping plates; each of the clamping plates is a metal material, and each of the clamping plates has at least one sandblasted sandblasting At the end, each of the adhesive layers penetrates into one of the sandblasted ends of one of the clamping plates, the metal material is alloy steel; each of the adhesive layers includes a polyurethane primer (Polyurethane Primer); at least one of the The thickness of the bonding layer ranges from 0.50mm to 1.00mm, and the thickness of each bonding layer extends in the circumferential direction; each of the elastic parts is a polyurethane elastic member; each of the clamping plates is provided with a piece on the shaft At the upward end, each elastic part is provided with an end in the axial direction, and the end of each clamping piece protrudes outward in the axial direction. The end of each elastic part is The part and the ends of the two adjacent clamping plates form a space; each elastic part and each clamping plate are fan-shaped and co-construct the clamping hole; the end of each clamping plate The side of the part corresponding to the clamping hole is provided with a lead angle. The precision collet according to any one of claims 1 to 8, wherein each of the elastic parts is made of an elastic material, and the composition of the elastic material includes a polyester prepolymer (Polyester prepolymer), a polyurethane primer (Polyurethane Primer) ) And curing agent. The precision collet according to claim 9, wherein the curing agent includes at least one of a liquid aromatic diamine polyurethane curative and a low molecular weight polyurethane curative.

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