CN203679821U

CN203679821U - Elastic fixture for efficiently milling multiple pieces

Info

Publication number: CN203679821U
Application number: CN201320654924.4U
Authority: CN
Inventors: 章鸿; 熊征伟
Original assignee: Sichuan Information Technology College
Current assignee: Sichuan Information Technology College
Priority date: 2013-10-23
Filing date: 2013-10-23
Publication date: 2014-07-02
Anticipated expiration: 2023-10-23

Abstract

The utility model discloses an elastic fixture for efficiently milling multiple pieces. The elastic fixture is characterized by comprising an integrated fixture body, wherein the fixture body is provided with a plurality of clamping holes with slots; the lower part of the fixture body is provided with a plurality of auxiliary holes communicated with the clamping holes through the slots; the diameter phi of the clamping holes is 8H7mm-30H7mm, and H7 is a code of a tolerance zone; the middle of the front surface of the fixture body is provided with a straight slot which is 35-60mm in height and 10mm in depth, the clamping force can be effectively reduced and the clamping effect is ensured; two ends of the fixture body are respectively provided with a shoulder which is 10mm in length and 5mm in thickness. The fixture is simple in structure, integrated, convenient to manufacture, small in size, light in weight, low in material consumption, and made of cheap materials; clamping is convenient, and a universal machine vice can be directly used for clamping; the machining efficiency is high, and the fixture can clamp a plurality of parts at a time; the parts can be quickly clamped and are not required to be centered and positioned; the fixture is reasonable in structure and can ensure the clamping reliability; the parts are machined on a vertical milling machine by matching two face and side cutters, two faces can be machined by once clamping, and the difficult problem of the parallelism of shoulder surfaces is well solved.

Description

Many high-efficient milling spring chucks

Technical field

The utility model relates to a kind of fixture, is specifically a kind of many high-efficient milling spring chucks.

Background technology

Fig. 1-2 is depicted as a kind of automobile-used height adjustment pin, and the architectural feature of this part is the screw thread of left end with M10-M32, and Intermediate Gray has the shoulder of symmetrical plane, and right-hand member is Φ 8-Φ 30mm polished rod.When its groundwork principle is assembling, the height that the screw thread of M10-M32 can be realized institute's locating element regulates, and middle shoulder is realized the axial location of part, and the symmetrical plane of shoulder is convenient to embed the part being mated, and prevent to relatively rotate, realize the circumferential location of part.According to Production requirement, this part needs to produce in enormous quantities.From the design feature of part, the polished rod of the screw thread of M10-M32 and Φ 8-Φ 30 is common structure, and in part, the shoulder structure with the plane of symmetry is uncommon, for this structure, general processing method is single-piece milling on milling machine, adopts vee-block clamping device.And the feature of this clamping device is, can only single-piece clamping when work, at the bottom of operating efficiency, meanwhile, clamped one time can only be processed a face, again when clamping, just centering again, the collimation of two planes of symmetry guarantees just to have become a great problem.

Utility model content

The purpose of this utility model is to provide a kind of many high-efficient milling spring chucks at this; Can directly clamp with general machine vice; Can realize part quick-clamping, without centering and location; On vertical knee-type milling machine, process, coordinate two face and side cutters, can realize clamped one time and just process two faces, well solved a difficult problem for the collimation of circular bead surface.

The utility model is achieved in that a kind of many high-efficient milling spring chucks of structure, it is characterized in that: have a clamp body that adopts integral type; On this clamp body, have multiple holes for clamping with cracking, its width that cracks is 1.5-4mm; Wherein the bottom of clamp body is designed with multiple fabrication holes that are communicated with by cracking with holes for clamping; Wherein holes for clamping is of a size of Φ 8H7mm-Φ 30H7mm; H7 is tolerance range code name;

The front surface middle part of described clamp body has been designed together highly for being highly the groove that 35-60mm, the degree of depth are 10mm; Respectively there is the crossette that a degree of depth 10mm, thickness are 5mm at clamp body two ends.

According to many high-efficient milling spring chucks described in the utility model, it is characterized in that: clamp body adopts the 65M that thickness is 20mm _nsteel spring plate.

According to many high-efficient milling spring chucks described in the utility model, it is characterized in that: on described clamp body, have 6-10 the holes for clamping that cracks, its width that cracks is 1.5-4mm;

Described clamp body root is designed with the fabrication hole of 6-10 Φ 5-Φ 10mm.

The utility model has the advantage of: many high-efficient milling spring chucks described in the utility model; Fixture has the following advantages:

(1) clamp structure is simple, is integral type, is convenient to manufacture; (2) volume is little, lightweight, and consumptive material is little, material requested low price; (3) convenient mounting and clamping, can directly clamp with general machine vice; (4) working (machining) efficiency is high, once can a clamping 6-10 part; (5) can realize part quick-clamping, without centering and location; (6) rational in infrastructure, can guarantee the reliability clamping; (7) on vertical knee-type milling machine, process, coordinate two face and side cutters, can realize clamped one time and just process two faces, well solved a difficult problem for the collimation of circular bead surface.

Accompanying drawing explanation

Fig. 1-2 is band shoulder alignment pin part drawing

Fig. 3 is the utility model clamp structure schematic diagram

Fig. 4 is that the utility model fixture master looks schematic diagram

Fig. 5 is the utility model fixture cross-sectional schematic

Fig. 6 is the utility model parts fixation and machining sketch chart

Wherein: 1, clamp body, 2, holes for clamping, 2a, crack, 3, fabrication hole, 4, groove, 5, crossette, 6, fixture, 7, machine vice, 8, face and side cutter (two), 9, part to be processed.

The specific embodiment

Below in conjunction with accompanying drawing, 1-6 is elaborated to the utility model, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.

As shown in Fig. 3,4,5, the utility model provides a kind of many high-efficient milling spring chucks at this, has a clamp body 1 that adopts integral type; On this clamp body 1, have multiple holes for clamping 2 with the 2a that cracks, its 2a width that cracks is 1.5-4mm; Wherein the bottom of clamp body 1 is designed with multiple fabrication holes 3 that are communicated with by the 2a that cracks with holes for clamping 2; Wherein to be of a size of the tolerance range in Φ 8H7mm-Φ 30H7mm(hole be H7 to holes for clamping 2, adds the variation that allow man-hour); The groove 4 that is highly 10mm for 35-60mm mm, the degree of depth has together been designed at the front surface middle part of described clamp body 1; Respectively there is the crossette 5 that a degree of depth 10mm, thickness are 5mm at clamp body 1 two ends.

In present embodiment: it is the 65M of 20mm that clamp body 1 adopts thickness _nsteel spring plate.

On described clamp body 1, have 6 holes for clamping 2 that crack, its 2a width that cracks is 1.5-4mm; Described clamp body 1 root is designed with the fabrication hole 3 of 6-10 Φ 5-Φ 10mm.

According to 6 holes for clamping that each and every one crack, the utility model is elaborated below:

Fixture adopts integral type design, as shown in the figure: when enforcement, the clamping of part is realized by 6-10 the holes for clamping that cracks with location, the width that cracks is 1.5-4mm, root is designed with the fabrication hole 3 of 6-10 Φ 5-Φ 10mm, be used for reducing stress concentration phenomenon, can increase the distortion amount of deflection of clamp body simultaneously, produce larger clamping force.The size of sex change holes for clamping is remained valid and is coordinated with the diameter that is held position of part, thereby realize the quick handling of part, because the size of part retaining part must not little basic size, for the reliability that guarantees to clamp, the size in this hole can not be too large, by this, tolerance calculating is carried out in this hole, the tolerance zone in hole is defined as H7.Meanwhile, in order to guarantee the symmetry of part to be processed shoulder plane, to having proposed position degree requirement on holes for clamping above-below direction, theoretically exact dimension is 5mm.In order to reduce clamping force, guarantee elasticity sex change amount, to produce and interfere between milling cutter and fixture in order to prevent simultaneously, it is highly 35-60mm together that the front surface middle part of fixture has been designed, the degree of depth is the groove 4 of 10mm, and respectively there is the crossette 5 of a 10mm at clamp body two ends, so that the quick location on vice.

The 65M that material fixture material selection thickness is 20mm _nsteel spring plate, 65M _nthe advantages such as spring steel has higher hardness, and the good decarburizing tendency of quenching degree is few, cheap, and machinability is good have good combination property.Machining process route is by arranging: annealing → machining → quenching (

Figure DEST_PATH_387737DEST_PATH_IMAGE001

, oil cooling) and → tempering → reinspection holes for clamping size (need further be worked into if overproof in qualified scope).

The operation principle of fixture:

As shown in Figure 6, fixture is directly placed on machine vice for parts fixation and processing mode, and part to be processed is inserted in fixture clamping hole, then rotate machine vice handle, in clamping process, the elastomer block on clamp body produces elasticity modification, thereby reaches the object that clamps part.Two face and side cutters of clamping abreast on vertical knee-type milling machine, in conjunction with the size of part to be processed, selecting external diameter is 125mm milling cutter, in order to guarantee the spacing between the processed plane on part, on handle of a knife between two cuttves, need to lay the annular spacer that a thickness is T (being the distance between processing symmetrical plane by T), milling mode is selected climb cutting, and table feed direction and spindle rotating direction are as shown in Figure 6.

To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. more than a high-efficient milling spring chuck, is characterized in that: have a clamp body (1) that adopts integral type; On this clamp body (1), have multiple holes for clamping (2) with crack (2a), its (2a) width that cracks is 1.5-4mm; Wherein the bottom of clamp body (1) is designed with multiple fabrication holes (3) that are communicated with by crack (2a) with holes for clamping (2); Wherein holes for clamping (2) is of a size of Φ 8H7mm-Φ 30H7mm;

The groove (4) that is highly 10mm for 35-60mm, the degree of depth has together been designed at the front surface middle part of described clamp body (1); Respectively there is the crossette (5) that a length 10mm, thickness are 5mm at clamp body (1) two ends.

2. many high-efficient milling spring chucks according to claim 1, is characterized in that: clamp body (1) adopts the 65M that thickness is 20mm _nsteel spring plate.

3. many high-efficient milling spring chucks according to claim 1, is characterized in that: on described clamp body (1), have 6-10 the holes for clamping (2) that cracks, its (2a) width that cracks is 1.5-4mm;

Described clamp body (1) root is designed with the fabrication hole (3) of 6-10 Φ 5-Φ 10mm.