KR920004235Y1 - Arbor structure - Google Patents

Abstract

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Description

Arbor combined structure

1 is an exploded perspective view illustrating the present invention.

Figure 2 is a longitudinal cross-sectional view of the main portion of the present invention combined state.

Figure 3 is a cross-sectional view of the main portion of the bottom state viewed from the front direction of the second Figure A-A 'for explaining the coupling action state of the present invention in detail.

Figure 4 is a perspective view illustrating a state in which the setting bolt and the cam bolt of the present invention is coupled.

5 is a plan view of the present invention set bolt.

Figure 6 is a side view showing the main portion of the setting bolt, the fifth view.

* Explanation of symbols for main parts of the drawings

1: Chuck 3: Cambolt Insertion Hole

4: fixing bolt hole 5: fixing bolt hole

6: Slide bolt 7: Cam bolt

8: Setting bolt 9: Modulus

10: crimping piece 11: contact piece

The present invention, in the CHUCK and the MODULE constituting the arbor (ARBOR) generally known, to improve the close state of the close part coupled with the efficient use and replacement of tools used for binding To prevent the burr wear rate between the chuck 1 and the modulus 9 at the same time, and to easily detach the modul 9 from the chuck 1 without removing the stud bolt 20. It relates to the coupling structure of the arbor drawn by.

Such a design has been known by the Korean Utility Model Registration application date filed January 23, 1990, filed by the applicant of the present application for the same purpose. In order to improve the present invention, the present invention will be described in detail with reference to the accompanying drawings, and thus help the understanding of the present invention.

Looking at the configuration of the Utility Model Application No. (747) described below, in the arbor consisting of the chuck and the modulus portion formed a plurality of elastic adhesive pieces formed by the incision in the upper portion and horizontal through The upper part of the contact piece body having a part of the spiral formed under the outer circumferential surface constituting the pin hole penetrates up and down so that the upper surface of the elastic contact piece has a curved portion, and has a curved surface in the upper part of the contact piece body in the lower center. The pin hole is formed somewhat smaller than the pin hole, and the inside of the bolt hole is inserted into the upper and lower contact holes so that the curved surface and the pin hole closely contact the curved part and the pin hole of the body of the contact piece. Helical close contact body Helix is provided under the anti-rotation keyway formed on both sides of the outer circumferential surface formed in a cylindrical shape with a certain depth. The screw is inserted into the modulus and inserted into the modulus. Then, the lower end of the chuck is formed into a cylindrical shape in the upper direction. The anti-rotation key is inserted into the space so that the anti-rotation key is inserted into the space, and the elastic contact piece on the upper part of the contact piece body is brought into close contact with the cylindrical engagement part of the chuck part. The bolts of the fastening bolts are inserted into the contact piece body by gradually turning the fastening bolts in line with the wrench grooves of the fastening bolts inserted through the bolt holes in the center of the support pieces screwed into the support piece coupling holes communicating with the stud bolt holes. It is screwed into the bolt fastening hole of the contact hole which is connected with the fixing pin, and accordingly the wrench is dropped As soon as the bolt of the fastening bolt according to dolryeojum forward portion forward while getting more and retracted back District adhesion at the same time that the other hand is curved upper surface portion is struck the push strongly curved portion of the back side elastic contact piece in close contact of the upper body in close contact thereto.

Accordingly, the elastic adhesive piece is gradually opened by self-elasticity, and thus is completely adhered to the cylindrical engaging portion of the chuck portion which is coupled to the outer circumferential surface thereof, without any play between the non-contact surfaces. In the above, the moving range of the close contact screw screwed with the fastening bolt and retracted according to the rotation of the fastening bolt is limited to a very small bar, it is the size of the pin hole of the close contact pin which is fixed through the pin hole of the contact body and the fixing pin It is configured to be limited to the difference.

Therefore, the present invention will be described in detail as described above.

In the accompanying drawings, the present invention shows a state in which the present invention is decomposed in order, and in FIG.

And in the accompanying drawings, it is difficult to understand the state in which the present invention is coupled with only the second diagram in FIG. 2, and the supporting bolts of the setting bolt 8 and the cambolt 7 are mutually cut by cutting the main part in the direction of the second line AA. The state is shown.

In addition, FIG. 4 shows a state of mutual coupling with the detailed shapes of the setting bolt 8 and the cam bolt 7 shown in FIGS. 1, 2, and 3, and FIGS. One measuring surface is shown to show the vertical plane 8b and cam contact groove 8a in which the planar state of the bolt 8 and the cambolt 7 are engaged. 1 and 2, the cam bolt insertion hole 3 is formed at one side of the axial center in the wheel part 2 of the chuck 1, and its depth is shown in FIGS. 2 and 3. As shown, grooves are formed to a predetermined depth beyond the center, and a fixing bolt hole 4 communicates with the cam bolt insertion hole 3 at one side thereof.

Accordingly, the following fixing bolts 5 are spirally inserted into the fixing bolt holes 4, and the fixing bolts 5 are formed on the outer peripheral surface of the head portion 5a at the same time as the spiral bolts. It has a socket wrench, and the other side is integrally formed with a sharp stepped portion 5b is fastened to the fixing bolt hole (4).

Then, bolt holes are formed in a straight line centered on both bottom surfaces of the formed chuck 1, and the following slide bolts 6 and 6a are fastened respectively.

However, only the bolt is not necessarily used, and a means for pushing down a separate pen may be used instead of the slide bolts 6 and 6a.

In addition, by forming a cam bolt (7) divided into a predetermined length of the head portion (7a) and the main shaft portion (7b) and fitted into the cam bolt insertion hole (3), the outer periphery peripheral surface of the head portion (7a) There is formed a bolt pressing groove (7c) of a predetermined depth and the main shaft portion (7b) is formed eccentrically on one side of the head (7a) to support the following setting bolt (8).

Accordingly, the setting bolt 8 forms a cam milling groove 8a of a semicircular groove on one side of the bolt body on the shaft as shown in FIGS. 5 and 6, and a vertical surface 8b is formed on the other side of the bolt body. An inclined surface was formed to be connected to the cam contact groove 8a, and a spiral portion 8c was formed at the lower portion thereof to be engaged with the pressing piece 10 to be connected to the cam bolt 7 in the chuck 1. Is fixed by the support.

And both sides of the upper surface of the modulus (9) to form a curved long groove (9a) (9b) is inserted into the slide bolt head (6) (6a) having both sides of the bottom surface of the chuck (1) as being coupled by sliding action , The present invention as described above is to be sequentially coupled in the following order, first, the upper narrow portion of the pressing piece 10 to the upper side to be fitted from the bottom of the cylindrical contact piece 11, and then the engaging piece (12) the crimping piece 10 and the contact piece 11 are combined, and the screw 8c of the setting bolt 8 is screwed to the fastening hole 10a having the center of the crimping piece 10 above. .

Therefore, the crimping piece 10, the close contact piece 11 and the modulus 9 is in a coupled state, the setting bolt (8) is in a state of being protruded in the state of being fastened to the center of the crimping piece (10) to which it is coupled, At this time, the position of the vertical surface 8b formed in the setting bolt 8 is in the + magnetic direction with the curved grooves 9a and 9b formed in the modulus.

Therefore, the close contact piece 11 coupled as described above is inserted into the hollow portion 1a formed at the center of the bottom surface of the enemy 1, so that the setting bolt 8 penetrates the hollow portion 1a. And the slide bolt heads 6b and 6c are inserted into the curved grooves 9a and 9b at the same time, and then the cam bolts 7 are inserted into the cam bolt insertion holes 3 of the wheel part 2. While inserting, the main shaft portion (7b) is inserted so as to be in close contact with the vertical surface (8b) of the setting bolt (8).

After the cam bolt 7 is completely inserted in the above state, the screw bolt is screwed into a loose state such that the stepped portion 5b of the fixing bolt 5 is inwardly inserted into the fixing bolt hole 4 formed at one side of the cam bolt insertion hole 3. . Then grab the modulus (9), or rotate in one direction using a separate blotting tool.

When the modulus 9 is rotated as described above, the slide bolt heads 6b and 6c, which stayed in one direction in the inserted state, stayed inside the curved grooves 9a and 9b of the modulus 9. The setting bolt 8, which is slidably moved to the opposite side of the space part, is also rotated so that the vertical bolt 8b is replaced with the cam bolt 7 close to the cam bolt 7 so that the cam bolt 7 of the setting bolt 8 is rotated. When the cam bolt 7 is rotated by using a separate socket range in the state of being fitted into the cam contact groove 8a, and the main shaft portion 7b is eccentrically formed, the setting bolt 8 is lifted into the upper shaft portion. The force acts as if it is completely fixed.

In such a state, when the fixing bolts 5 fitted on one side are tightly tightened, the stepped portion 5b is pressed against the bolt pressing groove 7c of the cam bolts 7 so that the pivoted cam bolts 7 are released or loosened. Since it is prevented, not only disassembly and coupling is carried out without removing the stud bolt 20, but also the binding force is good to prevent wear or loosening of the close contact portion due to the impact, vibration, etc. generated during operation. It is a very useful design that will provide the effect.

Claims (1)

In the well-known thing which has the crimping piece 10 and the contact piece 11 so that the modulus 9 and the chuck 1 may be combined, the cam is one side of the center of the wheel part 2 integrally formed in the chuck 1. It has a bolt insertion hole (3) and a fixing bolt hole (4), and has a slide bolt (6) (6a) protrudingly coupled to both sides of the bottom surface and forming a cam bolt (7) having a main shaft portion (7b) on one side In the setting bolt 8 having the holding groove 7c and having the spiral portion 8c at the bottom thereof, the cam contact groove 8a and the vertical surface 8b are formed, and the curved field groove 9a is formed on both sides of the upper surface of the modulus 9. A coupling structure of an arbor (ARBOR), characterized in that to form a coupling (9b).