CN206185638U - Smart processingequipment of carbide spherical crown - Google Patents

Abstract

The utility model discloses a carbide spherical crown processingequipment, this processingequipment grips head and diamond grinding wheel including the clamp of exempting from that is used for installing the work piece, it fixes on the lathe main shaft through the chuck to exempt from the double -layered head that grips, the diamond grinding wheel is fixed on grinding head main shaft, have with the arc surface of the spherical crown adaptation of work piece, the arc surface of diamond grinding wheel and the contact of the spherical crown of work piece, and the spherical crown centre of a circle coincidence of the arc surface centre of a circle of diamond grinding wheel and work piece. The utility model provides a carbide spherical crown processingequipment not only can improve the machining precision of work piece spherical crown, has improved machining efficiency moreover, has simplified process scheme, is applicable to batch production.

Description

Hard alloy spherical crown precise machining device

Technical field

The utility model belongs to metal material processing technical field, is related to the processing of Hardmetal materials, and in particular to one Plant hard alloy spherical crown precise machining device.

Background technology

Carbide drill tooth is widely used in mine, oil and building engineering field.Carbide drill tooth is integral type knot Structure, mainly the spherical crown by cylinder body and positioned at cylinder body end constitute, generally first process the blank with blank, then By blank is sintered, fine cylindrical cylinder, barreling treatment is finally carried out.However, the spherical cap portion of a part of work piece Positioned for installing, in order to ensure that spherical crown is fitted preferably with steel matrix, except the external cylindrical surface to carbide drill tooth carries out finishing Outside work, spherical crown must also be finished；At present, the mode for being finished to spherical crown mainly includes：(1) contained using emery wheel Whole spherical crown carries out mill pin；(2) containing 1/2 spherical crown camber line using emery wheel carries out mill pin；(3) carry out transforming into mill pin using emery wheel. Above-mentioned several spherical crown method for fine finishing have that machining accuracy is poor, emery wheel consumption is big, and emery wheel repeats reconditioning difference etc. Problem.It is of course also possible to use numerically control grinder is finished to spherical crown, but the processing cost of this mode is of a relatively high, no Suitable for producing in enormous quantities.

Utility model content

The purpose of this utility model is intended to, there is provided a kind of hard alloy spherical crown processing unit (plant), is ensureing crudy purpose While, improve processing efficiency, reduce processing cost.

In order to achieve the above object, the utility model provides a kind of hard alloy spherical crown processing unit (plant), and it includes being used for That installs work piece exempts from clamping collet and skive；Exempt from clamping collet to be fixed on machine tool chief axis by chuck；Buddha's warrior attendant Stone sand wheel is fixed on grinding spindle, with the arc surface that the spherical crown with work piece is adapted to, the arc surface of skive with The spherical crown of work piece is contacted, and the arc surface center of circle of skive overlaps with the spherical crown center of circle of work piece.Boart boart Wheel is rotated under the drive of grinding spindle, and the spherical crown black skin to work piece is finished, while work piece is through exempting from folder Clinch ear rotates under machine tool chief axis drive around machine tool chief axis axis, so as to realize the comprehensive processing to work piece spherical crown. When between machine tool chief axis axis and grinding spindle axis in 43 ° -45 ° of angle, it is ensured that skive arc surface is justified The heart overlaps with the work piece center of circle, so that work piece spherical crown and work piece other parts are not eccentric, and ensures added When workpiece is moved along machine tool chief axis axis direction, do not interfered by skive arc surface and damage work piece；Guarantee is added Workpiece is to improve the efficiency that moves back and forth of workpiece, preferably machine tool chief axis axis in the horizontal direction along the purpose in machine tool chief axis direction.

Above-mentioned hard alloy spherical crown processing unit (plant), the work piece is arranged in the endoporus for exempting from clamping collet.For work Realize that not shutting down dress takes workpiece, improves operating efficiency during work, work piece loads exempts from the part of clamping collet endoporus and exempt from Clamping collet endoporus side coordinates for gap.In order that work piece is in process along the rotation of machine tool chief axis axis direction Turn, it is necessary to work piece loading is exempted from the part of clamping collet endoporus and exempts from have sufficiently large friction between clamping collet endoporus Power, thus gap be difficult it is excessive, otherwise can because frictional force not enough cause work piece when turn when stop, preferred gap is 0.01mm-0.02mm。

Above-mentioned hard alloy spherical crown processing unit (plant), the arc surface chord length of the skive is more than the 1/2 of work piece There is the tangent line tangent with circular arc on spherical crown chord length, two sides, it is therefore an objective to ensure the round and smooth of spherical brill tooth spherical crown summit, prevent from not being ground To summit, while ensureing work piece spherical crown and column part joint without step, and eliminate what skive bounce brought Influence.

The arc surface chord length of above-mentioned skive exceedes 1/2 spherical crown chord length length of work piece with work piece size Change, typically should be greater than 2.5mm-3.5mm, and work piece takes greatly greatly, work piece is small take it is smaller.

Above-mentioned hard alloy spherical crown processing unit (plant), skive taking tangential sections include two parts, and a portion is outer The face of cylinder and spherical crown joint length, are typically advisable by 0.7mm-1.2mm, and another part is the extension of front portion tangent section Point.

Above-mentioned hard alloy spherical crown processing unit (plant), skive width determines according to its cambered surface chord length, typically by cambered surface Chord length adds 3mm-4mm to be advisable；The use first of skive cambered surface is thick molded and then uses curve grinding precise dressing, it is considered to Curve grinding repairs scope, and grinding wheel diameter takes φ 120mm- φ 145mm and is advisable；Skive abrasive material is diamond, and bonding agent is B, granularity is 240, and wet-milling concentration is 100%.

Above-mentioned hard alloy spherical crown processing unit (plant), the chuck is scroll chuck.

Above-mentioned hard alloy spherical crown processing unit (plant), work piece is the part with spherical cap structure, such as spherical brill tooth, its It is made up of column part and spherical cap portion, wherein external cylindrical surface is adapted with the endoporus for exempting from clamping collet.

Above-mentioned hard alloy spherical crown processing unit (plant), work piece spherical crown and skive arc surface R scale errors reach In 0.05mm-0.10mm, Ra0.8-1.6.

Compared with prior art, the utility model has the advantages that：

1st, because the axis of rotation of the utility model skive axis of rotation and work piece forms an angle, so Can ensure that the skive arc surface center of circle overlaps with the work piece center of circle so that work piece spherical crown and work piece its Its part is not eccentric, and ensures when work piece is moved along machine tool chief axis axis direction, not dry by skive arc surface Relate to and damage work piece, improve machining accuracy；

2nd, the skive that is used due to the utility model, pawl disk, to exempt from clamping collet be easy processing part, and hard is closed Gold goal hat work flow technique is simplified, so as to effectively reduce processing cost；

3rd, because the utility model can be realized in the case of not shutting down, dress takes work piece, it is possible to achieve efficiently production, Suitable for batch production.

Brief description of the drawings

Fig. 1 is the utility model hard alloy spherical crown processing unit (plant) structural representation.

Fig. 2 is the enlarged drawing of I parts in Fig. 1.

The skive sectional view that Fig. 3 is used for the utility model.

Fig. 4 exempts from clamping collet sectional view for what the utility model was used.

Wherein, 1- chucks, 2- exempts from clamping collet, the spherical brill teeth of 3-, 4- skives.

Specific embodiment

All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine by any way.

Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), except non-specifically is chatted State, can alternative features equivalent by other or with similar purpose replaced.I.e. unless specifically stated otherwise, each feature is An example in a series of equivalent or similar characteristics.

The hard alloy spherical crown processing unit (plant) that the present embodiment is provided, as shown in Figures 1 to 4, it includes chuck 1, exempts to clamp Chuck 2 and skive 4.Exempt from clamping collet 2 to be fixed in chuck 1, chuck 1 is scroll chuck, and it is fixed on machine tool chief axis Upper (lathe here uses 2M9120 classes lathe), machine tool chief axis are in the horizontal direction.Work piece spherical crown and boart boart Wheel arc surface R scale errors are reached in 0.05mm, Ra0.8.

As shown in figure 1, into the angle of β=45 °, the spherical crown of work piece between machine tool chief axis axis and grinding spindle axis The center of circle overlaps with the arc surface center of circle of skive.

As shown in Figure 1 to Figure 3, the two ends of skive 4 in the present embodiment are identical arc machining part, and its middle part is The mounting hole being connected with grinding spindle；Skive 4 is fixed on grinding spindle, the arc surface chord length L of skive 4₂It is super Cross 1/2 spherical brill tooth 3 spherical crown chord length L₁3mm, the width of skive 4 adds 4mm for the arc surface chord length of skive 4；Buddha's warrior attendant The use first of stone sand wheel cambered surface is thick molded and then uses curve grinding precise dressing, it is considered to which curve grinding repairs scope, grinding wheel diameter Take φ 130mm；Skive abrasive material is diamond, and bonding agent is resinoid bond B, and granularity is 240, and wet-milling concentration is 100%；The two sides of skive 4 repairs 2.3mm tangent lines, and a portion is external cylindrical surface and spherical crown joint length, is 1.0mm, remainder is the prolongation of front portion tangent section.

As shown in figure 4, exempting from clamping collet 2 is provided with the endoporus coordinated with spherical brill tooth 3 external cylindrical surface gap, work piece In the endoporus for exempting from clamping collet 2, gap length is 0.01mm, so as to reach do not shut down change part purpose while, make by Workpiece loading is exempted from the part of clamping collet endoporus and exempts from have sufficiently large frictional force between clamping collet endoporus, so as to be added Workpiece is in process along the rotation of machine tool chief axis axis direction.

When being finished to spherical brill tooth 3 using above-mentioned hard alloy spherical crown processing unit (plant), follow the steps below：

S1, spherical brill tooth 3 is arranged in exempting from the endoporus of clamping collet 2, adjustment angle β=45 ° of skive 4 and relative The distance of the spherical crown of work piece 3, make the arc surface of skive 4 with it is spherical brill the spherical crown of tooth 3 contact when both the center of circle overlap；

S2, under machine tool chief axis driving, exempts from clamping collet 2 and drives spherical brill tooth 3 to be rotated around machine tool chief axis axis, while logical Cross shake lathe and quickly move handwheel, control lathe drives machine tool chief axis to move in the horizontal direction, slowly close to skive 4 Arc surface to the spherical brill spherical crown of tooth 3 is contacted with the arc surface of skive 4；

S3, skive 4 rotates under grinding spindle driving along grinding spindle axis, and the spherical crown to spherical brill tooth 3 enters Row is refined to spherical crown black skin and all polishes；

S4, handwheel is quickly moved by shaking lathe, and control lathe drives machine tool chief axis to be moved to lathe in the horizontal direction Main shaft returns original position, removes the spherical brill tooth 3 for processing, and removes the product for processing, and in the case of not shutting down, refills down One spherical tooth 3 that bores is processed.

By above-mentioned hard alloy spherical crown processing method, can be while preferable crudy be ensured, realization does not stop Machine is produced in batches, improves processing efficiency.

One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this reality With new principle, it should be understood that protection domain of the present utility model is not limited to such especially statement and embodiment. One of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various do not depart from this practicality New substantive other various specific deformations and combination, these deformations and combination are still in protection domain of the present utility model.

Claims (8)

1. a kind of hard alloy spherical crown precise machining device, it is characterised in that including for install work piece (3) exempt from clamp folder Head (2) and skive (4)；Exempt from clamping collet (2) to be fixed on machine tool chief axis by chuck (1)；Skive (4) is solid It is scheduled on grinding spindle, with the arc surface that the spherical crown with work piece (3) is adapted to, the arc surface and quilt of skive (4) The spherical crown of workpiece (3) is contacted, and the arc surface center of circle of skive (4) overlaps with the spherical crown center of circle of work piece (3).

2. hard alloy spherical crown precise machining device according to claim 1, it is characterised in that the machine tool chief axis axis with It is in 43 ° -45 ° of angle between grinding spindle axis.

3. hard alloy spherical crown precise machining device according to claim 1, it is characterised in that the work piece (3) is installed In the endoporus for exempting from clamping collet (2).

4. the hard alloy spherical crown precise machining device according to claim 1 or 3, it is characterised in that the work piece (3) Loading is exempted from the part of clamping collet endoporus and exempts from clamping collet (2) endoporus side for gap coordinates.

5. hard alloy spherical crown precise machining device according to claim 4, it is characterised in that the gap is 0.01mm- 0.02mm。

6. hard alloy spherical crown precise machining device according to claim 1, it is characterised in that the skive (4) Spherical crown chord length 2.5mm-3.5mm of the arc surface chord length more than 1/2 work piece (3).

7. the hard alloy spherical crown precise machining device according to claim 1 or 6, it is characterised in that the skive (4) two sides has the tangent line tangent with circular arc.

8. hard alloy spherical crown precise machining device according to claim 1, it is characterised in that the chuck (1) is three-jaw card Disk.