KR200143395Y1 - Soft jaw fixing tool set for hydraulic chuck - Google Patents

Abstract

The present invention relates to a soft jaw fixed tool set for a hydraulic chuck, which enables to fix a soft jaw during machining in order to maintain concentricity and squareness of a soft jaw used in a hydraulic chuck.

The constitution of the present invention is provided with a plurality of outer diameters formed at equal intervals of a certain dimension and is processed to maintain a defined value with concentricity and perpendicularity with respect to the outer diameter, and the inner working tool of the soft jaw formed with a screw hole 2a in the center ( 2) and a plurality of holding rods 4 formed with threaded portions 4a and 4b which are screwed into the threaded holes of the inner working tool, and a triangular body 5a, each corner having a right angle to the center thereof. The horizontal portion 5b is formed and consists of the tool 5 for processing the outer side of the soft jaw, in which bolts 6 are respectively provided so as to be movable in the center direction.

Therefore, when reworking the soft jaw, it is possible to find and use the tools necessary for the machining work quickly, and to select or adjust the tools according to the machining size, it is very convenient and the work efficiency is improved. By carrying it, you can prevent the loss caused by loss and damage.

Description

Soft Jaw Fixed Tool Set for Hydraulic Chuck

The present invention relates to a soft jaw fixed tool set for a hydraulic chuck, and more particularly, in order to maintain the concentricity and the squareness of the soft jaw, it is firmly fixed so that there is no shaking of the soft jaw during machining and desired machining The present invention relates to a soft jaw fixed tool set for hydraulic chucks, which can be freely selected or adjusted according to dimensions.

In general, hydraulic chucks are installed in automatic cutting machines such as CNC lathes and single-functional lathes for mass production of the same product, and the hydraulic chucks are used to automatically fix or release workpieces. will be.

The hydraulic chuck is largely equipped with a head, a plurality of master jaws installed in the head and movable in a radial direction, and coupled to the plurality of master jaws and installed in a reciprocating manner in a radial direction. It consists of a plurality of soft jaws that substantially holds the workpiece, and a slider (Slider) to operate the plurality of master jaws and soft jaws by reciprocating linearly by hydraulic pressure, the master jaws and the soft jaws reciprocate in the radial direction of the head By moving, the outer peripheral surface or the inner peripheral surface of a workpiece is tightened or loosened.

The mast jaws and the plurality of soft jaws of these hydraulic chucks wear out the slide surface due to repeated work of fixing the workpiece, and thus shake (gap) occurs on the slide surface. It is very unreasonable that the master jaw is in the head of the hydraulic chuck, and it is impossible to do it, and it is possible to fundamentally prevent the play and generate the precision of the product.

Therefore, it is possible to produce a product that can maintain a high precision by catching the shaking of the soft jaw that comes into contact with the product at the same time. Since the play is formed so that the defined concentricity and squareness cannot be maintained, reworking the worn part can continue to maintain the desired concentricity and squareness.

However, conventionally, it is very cumbersome to find the material that fits the dimensions of the fixed part of the workpiece to be machined every time, and if there is no material, the work must be processed on another machine to meet the dimensions, which leads to time loss and work efficiency. Resulted in degradation.

In addition, if the soft jaw used in the production of the product is to be used again for the production of the product, the soft jaw must be processed again in order to maintain the desired concentricity and squareness. Inconvenient to find and use a material that fits the dimensions.

The present invention is to solve the conventional problems as described above, the object is to provide a plurality of soft jaw inner processing tools having a variety of dimensions according to the machining portion and dimensions of the soft jaw and a tool for the outer surface of the soft jaw freely adjustable It is to provide a hydraulic jaw soft jaw fixed tool set that can improve the work efficiency by eliminating the inconvenience of work and shortening the work time when processing to maintain concentricity and squareness of the product to be produced. .

1 is a perspective view showing a state in which a soft jaw fixing tool according to the present invention is put into the case.

Fig. 2 is a side view of a state in which the soft jaw installed in the hydraulic chuck fixes the outer circumferential surface of the workpiece.

3 and 4 is a side view showing a state of use of the tool for processing the inner side of the soft jaw according to the present invention.

5 is a front view showing a state of use of the tool for processing the inside of the soft jaw according to the present invention.

6 is a side view of a state in which the soft jaw installed in the hydraulic chuck fixes the inner circumferential surface of the workpiece.

7, 8 and 9 are a front view and a side view showing a state of use of the tool for processing the outer side of the soft jaw according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Cases 1a to 1e: Seat Groove

2: Tool for Inner Side Processing 2a: Thread Hole

3: C type ring 4: Holding rod

4a, 4b: Thread portion 5: Tool for external machining

5a: body 5b: horizontal portion

5c: screw hole 6: bolt

7: head 8: soft jaw

9: master jaw W, W ': workpiece

The above object is a tool for fixing the clearance of a soft jaw when machining in order to maintain the concentricity and the squareness of the soft jaw installed in the hydraulic chuck, provided with a plurality of outer diameters formed at equal intervals of a constant dimension And a plurality of grips having a concentricity and a right angle with respect to the outer diameter, the gripping tools having a screw hole in the center thereof and a threaded portion screwed into the screw holes of the inner working tool of the soft jaw. A hydraulic part comprising a rod and a triangular body, each corner having a horizontal portion formed at a right angle with respect to the center, and having a fixed bolt installed on the horizontal portion so as to be movable in the center direction. Chuck Soft Jaw It can be achieved by a fixed tool set.

At this time, by using the inner peripheral surface of the tool for processing the inner side of the soft jaw further comprises a C-shaped ring to finely increase the outer diameter of the inner working tool of the soft jaw, the inner and outer processing tools of the soft jaw seat groove of the same shape It is preferable to put it in the case formed inside and to make it easy to store and carry.

Hereinafter, with reference to the accompanying drawings, a specific embodiment of the present invention will be described in detail.

Figure 1 is a perspective view showing a state in which the tool for processing the inner and outer processing of the soft jaw according to the present invention is put into the case, the seat groove (1a) of the same shape as the tools to put the tools in place in the case (1) ) To (1e) are formed, the seat grooves (1a) to (1e) are used to fit the outer peripheral surface of the plurality of tools for the inner working of the soft jaw (2) and the inner working tool (2) of the soft jaw A plurality of C-shaped rings (3), a plurality of gripping rods (4) for holding the inner working tool (2) of the soft jaw, and a plurality of bolts (6) for the outer working tool (5) of the soft jaw Is inserted and stored.

The plurality of soft jaw inner working tool (2) is formed with the outer diameter at equal intervals of a predetermined dimension, the outer diameter is formed from 8mm to large 80mm, the outer diameter difference between the tools 1mm interval It is preferable to form.

In addition, the tool 2 for processing the inner side of the soft jaw has a screw hole 2a formed at the center thereof, and the size of the screw hole 2a is formed differently according to the outer diameter of the tool 2, and the outer diameter is 8 to 16 mm. The thread hole is formed by M4-tap, 17-25 mm is M6-tab, 26-35 mm is M8-tab, 36-50 mm is M10-tab, and 51-80 mm is inner diameter. It is preferable to form this through-hole 20 mm. (Note: M4 to M10, KS standard: B0201)

The gripping rods 4 are formed at both ends of threaded portions 4a and 4b fitted to the threaded holes 2a of the soft jaw inner working tool 2, and are formed on the inside of the soft jaw. A plurality of threaded portions 4a and 4b are formed to have different diameters in accordance with the size of (2a), and the holding rod 4 has a threaded portion 4a suitable for the size of the soft jaw inner processing tool 2. The gripping rods 4 having 4b can be selected and screwed together.

The C-shaped ring 3 is formed to have a thickness of 0.1 to 0.25 mm to further reduce the outer diameter difference of the tool for processing the inner side of the soft jaw formed at equal intervals. The mold ring (3) allows for common use with several soft jaw inner working tools (2) with similar outer diameters.

Soft jaw outer processing tool (5) consists of a triangular body (5a), each corner is formed with a horizontal portion (5b) of a predetermined length in a direction perpendicular to the center, the center of each horizontal portion (5b) The screw hole 5c is formed in the structure, and the structure which is made so that the bolt 6 may be screw-fitted, respectively.

At this time, the horizontal portion (5b) is a part that meets directly to the bolt (6) for fixing the soft jaw to form a thicker than the thickness of the body (5a) of the horizontal portion (5b) to increase the structural strength of this portion Preferably, the moving distance of the bolt 6 is set to 0 to 70 mm minimum so that the fixing range can be 140 mm at the maximum diameter, and the thread pitch of the bolt 6 is 1.5 to 2.0 mm. It is set within to facilitate calculation of the moving distance of the bolt 6 according to the rotational speed and the rotation angle of the bolt 6.

According to the present invention of this configuration, as shown in Fig. 2, the soft jaw 8 installed in the master jaw 9 of the hydraulic chuck repeatedly fixes the outer circumferential surface of the work W to be in contact with the work W (8). If the inner part is worn out, the concentricity and the squareness will be out of the prescribed values and the wear part must be reworked. At this time, by selecting the appropriate dimensions of the inner working tool (2) of the present invention can be quickly fixed to the soft jaw (8) and at the same time rework the soft jaw (8) according to the product specifications.

For example, when the outer diameter A of the fixing part of the workpiece W to which the soft jaw 8 is to be fixed is 30 mm, the inner working tool 2 whose outer diameter B is 5 mm smaller than 25 mm is selected, As shown in Fig. 3, it is bitten and fixed to the inside of the soft jaw (8). At this time, since the selected screw hole 2a of the inner working tool 2 is M6-tab, the holding rod 4 having the same threaded portion 4a as the selected dimension is selected to move the threaded portion 4a of the holding rod 4 to the inner side. By screwing into the screw hole 2a of the machining tool 2, the inner machining tool 2 can be easily taken out and inserted from the seat groove 1a of the case 1, and is very convenient when fixing to the soft jaw 8. Done.

In this way, when the inside machining tool 2 is snapped inside the soft jaw 8, the inside dimension B of the soft jaw 8 also becomes 25 mm, and the soft jaw 8 is rotated while rotating the head 7 of the hydraulic chuck. If the inner side of the) is cut to a depth of 2.5 mm, the inner dimension B 'of the soft jaw 8 becomes 30 mm, so that it is processed to the original desired dimension. Therefore, by precisely asking the fixing part 30mm to be fixed, it is possible to precisely process the product by maintaining the concentricity and the squareness of the product within the specified value.

In this way, the tool can be quickly selected and used according to the outer diameter (A) of the workpiece (W), and the use of the C-shaped ring (3) further improves the depth of wear of the soft jaw due to repetitive work. Can be reduced.

That is, as shown in Figs. 4 and 5, the inner working tool 2 having a diameter B of 24 mm in reworking the worn soft jaw 8 by working 30 mm in diameter and repeatedly working the product 30 mm. When the C-shaped ring 3 having a thickness C of 0.25 mm is fitted on the outer circumferential surface of the), the inner dimension D of the soft jaw 8 becomes 29 mm, thereby making the inside of the soft jaw 8 0.5 When cutting to mm, the inner dimension B 'of the soft jaw 8 is processed to 30 mm. The use of a C-shaped ring (3) thus reduces the recut depth of the soft jaw (8), thereby reducing the consumption of the soft jaw (8) due to reworking and thus extending the life of the soft jaw (8). Can be.

6 shows a state in which the soft jaw 8 fixes the inner circumferential surface of the fixed part of the workpiece W ', and the outer side of the soft jaw 8 in contact with the inner circumferential surface of the fixed part of the workpiece W' is outside. It is possible to produce a precise product by fixing and then using the machining tool (5).

For example, when the fixing part inner diameter a of the workpiece W 'is 100 mm, the outer dimension b' of the soft jaw 8 is 105 mm as shown in Figs. 7, 8 and 9. Position, attach the outer machining tool 5 to the outside of the soft jaw 8, tighten the bolt 6 completely, and fix the outside of the soft jaw 8 to a depth of 2.5 mm. Therefore, it is possible to produce a precise product, after which the outside of the soft jaw (8) due to the repeated production of the product, the play is generated again. Therefore, if the thread pitch of the bolt 6 is 1 mm as shown in the imaginary line of FIG. 7, when the bolt 6 is rotated ½, the bolt 6 is moved to the outside of the soft jaw 8 and the end of the bolt 6. A gap c of 0.5 mm is formed therebetween, so that the soft jaw 8 is opened so that the outside of the soft jaw 8 comes into close contact with the end of the bolt 6, as shown in FIG. Likewise, the outer dimension b 'of the soft jaw 8 is widened to 101 mm.

Therefore, if the outer side of the soft jaw 8 is cut to a depth of 0.5 mm, the soft jaw 8 can be processed to the original 100 mm. At this time, if the concentricity and the squareness are machined to be within the prescribed values and reused, the workpiece W ' ) Can be processed precisely.

Since the tool has a bolt travel distance of at least 0 mm and a maximum of 70 mm, the tool has a wide range for fixing the soft jaw (8) with one tool, and it is efficient according to the number of revolutions and the angle of rotation of the bolt. Since it is set, the cutting depth of the soft jaw 8 can be set freely.

In addition, since the tool 5 has a triangular structure, there is no fear of deformation of the portion of the body 5a between the fixing parts in which the bolt 6 is installed, and the structural strength is increased to increase the structural strength. It can be fixed firmly without shaking.

As described above, according to the soft jaw fixed tool set for the hydraulic chuck according to the present invention, it is possible to quickly find and use a tool necessary for the machining operation when reworking to maintain the concentricity and the squareness of the soft jaw. It is very convenient because it is selected or adjusted to use, and the work efficiency is improved, and by putting the tools in the case and storing and carrying them, there is an effect of preventing abnormal loss due to loss and damage.

Although the present invention has been described in detail only with respect to the embodiments described, it will be apparent to those skilled in the art that various modifications and changes are possible within the technical spirit of the present invention, and such modifications and modifications belong to the appended utility model claims. will be.

Claims (4)

In the tool for fixing the soft jaw when machining to maintain the concentricity and squareness of the soft jaw installed in the hydraulic chuck, An inner diameter of the soft jaw (2) which is provided with a plurality of outer diameters at regular intervals and is provided with a plurality of concentricity and perpendicularity with respect to the outer diameter, and has a screw hole (2a) formed at the center thereof; A plurality of gripping rods (4) having threaded portions that are screwed into the threaded holes (2a) of the inner working tool (2); And It consists of a triangular body (5a), each corner is formed with a horizontal portion (5b) at right angles with respect to the center, the softening bolts (6) are respectively installed so as to be movable in the center direction on the horizontal portion (5b) Tool 5 for outer working of the jaw; Soft jaw fixed tool set for hydraulic chuck, characterized in that consisting of. The method of claim 1, And a C-shaped ring (3) for finely increasing the outer diameter of the inner working tool (2) by being inserted into the outer circumferential surface of the inner working tool (2). The method of claim 2, It is further provided with a case (1) formed therein the grooves (1a) to (1e) for the inner and outer processing tools (2) (5), the holding rod (4) and the C-shaped ring (3) Characterized in that the soft jaw fixed tool set for the hydraulic chuck. The method of claim 1, The threaded portion of the gripping rod (4) is formed on both ends, the diameter of the threaded portion is characterized in that the soft jaw fixed tool set for the hydraulic chuck, characterized in that formed.