TWI606878B - Boring fixture - Google Patents

Description

Pupil fixture

The invention is related to the treatment, in particular to a pupil fixture.

During the lathe processing, whether the axis of the workpiece rotation and the center of the tool holder are concentrically affect the processing quality.

However, the conventional method of correcting concentricity is to make a precision jig. Based on the jig, the measuring instrument such as a dial gauge is used to repeatedly measure and fine-tune the tool until the requirement is met. In addition, although the commercially available tool has a specific size, Due to machining tolerances or allowances, the outer diameter of the tool or the inner diameter of the cutter sleeve may not be fully compliant, so it is usually necessary to perform a certain degree of boring of the inner bore of the squeegee sleeve. Therefore, the cost of the jig is high and the man-hours required to correct the concentricity and the pupil are longer.

Therefore, it is necessary to provide a novel and progressive boring jig to solve the above problems.

The main object of the present invention is to provide a boring jig that can quickly boring, quickly reach the concentricity of the tool and the workpiece, and is easy to install and low in cost.

In order to achieve the above object, the present invention provides a boring jig for mounting on a rotating seat of a lathe, the rotating base having a rotating shaft center, the lathe further including a rotating shaft opposite to the rotating base a fixing seat for fixing a cutter, the boring fixture comprising: a fixing head for Fixed to the rotating base and rotates around the rotating shaft; a plugging end, a beveled hole for inserting the cutter, the inclined hole has an extending direction; wherein when the fixing head is fixed to the rotating base The extending direction forms a tilt angle greater than zero between the extending direction and the rotating axis.

1‧‧‧Drilling fixture

10‧‧‧Fixed head

11‧‧ Empty room

111‧‧‧ shoulder

12‧‧‧ Large diameter radial flange

13‧‧‧Small radial flange

20‧‧‧Interrupted end

21‧‧‧ oblique hole

211‧‧‧ Extension direction

22‧‧‧Keyhole

23‧‧‧Locks

24‧‧‧ outer surface

25‧‧‧ plane

31‧‧‧ rotating seat

311‧‧‧Rotating axis

32‧‧‧ fixed seat

321‧‧‧ 内孔

33‧‧‧Cutter sleeve

40‧‧‧Tools

Θ‧‧‧ Tilt angle

1 is an exploded view of a preferred embodiment of the present invention.

Figure 2 is a cross-sectional view of a preferred embodiment of the present invention.

Figure 3 is an enlarged cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a schematic view of the operation of a preferred embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Referring to FIGS. 1 through 4, there is shown a preferred embodiment of the present invention. The boring jig 1 of the present invention includes a fixed head 10 and an insertion end 20.

The boring jig 1 is mounted on a rotating seat 31 of a lathe, the rotating base 31 has a rotating shaft 311, and the lathe further includes a fixing base 32 opposite to the rotating base 31 on the rotating shaft 311. The fixing base 32 is configured to fix a cutter 40 by, for example, a clamping sleeve 33; the fixing head 10 is fixed (eg, clamped) to the rotating base 31 and rotates around the rotating shaft 311; the insertion end 20 is provided with a slanting hole 21 for inserting the tool 40. The slanting hole 21 has an extending direction 211. The extending direction 211 is preferably in the same plane as the rotating axis 311, which can reduce the radial vibration during rotation and improve processing. When the fixing head 10 is fixed to the rotating base 31, the extending direction 211 and the rotating shaft center 311 form a tilt angle θ greater than zero. Thereby, the boring jig 1 can drive the cutter 40 to rotate around the rotating shaft 311 during the operation of the lathe. An inner hole 321 which is concentric with the rotating shaft center 311 can be pulled out from the clamping sleeve 33, and the boring jig 1 can be removed to clamp the workpiece to the rotating base 31, and the selected tool is used. In combination with the cutter sleeve 33, the various cutters that can be quickly bored and clamped (for example, radially inserted by the lock member) and the workpiece on the rotary seat 31 are preferably Concentricity. The inclination angle θ determines the diameter of the inner hole 321 after the pupil. The inclination angle θ is preferably not more than 5 degrees, for example, not more than 3 degrees, so that the cutter 40 is not broken due to excessive swing width.

The fixed head 10 is internally provided with an empty chamber 11. The empty chamber 11 preferably tapers away from the insertion end 20. The empty chamber 11 communicates with the inclined hole 21 and is open at one end of the fixed head 10 opposite to the insertion end 20. In this embodiment, the empty chamber 11 has a cylindrical shape and tapers in a direction away from the insertion end 20, and the radial dimension of the empty chamber 11 is larger than the radial dimension of the inclined hole 21, thereby The chamber 11 can allow the insertion depth of the tool 40 to be adjusted as needed. By the tapered divergence, the empty chamber 11 provides the space for inserting the cutter 40 while retaining some slight clamping deformation at the grip. A joint portion 111 is formed at the junction of the empty chamber 11 and the inclined hole 21, and the shoulder portion 111 is axially retractable when the lathe jig 1 is clamped by the lathe, and the clamping effect is better.

In this embodiment, the boring jig 1 further includes a large diameter radial flange 12 connected between the fixing head 10 and the insertion end 20, and further includes a radial flange connected to the large diameter. A small diameter radial flange 13 between the 12 and the insertion end 20. In more detail, the large diameter radial flange 12 projects radially from the fixed head 10, and the small diameter radial flange 13 projects radially from the insertion end 20, the large diameter radial flange 12 When the boring jig 1 is clamped on the lathe, it can be positioned in the axial direction. The small-diameter radial flange 13 (the portion where the large-diameter radial flange 12 and the insertion end 20 meet the maximum force) can reinforce the radial bearing capacity of the boring jig 1 to avoid damage and Reduce deformation.

The insertion end 20 is further provided with at least one locking hole 22 communicating with the inclined hole 21, and at least one locking member 23 is locked to the at least one locking hole 22 and can extend into the inclined hole 21. The outer surface 24 of the insertion end 20 is provided with at least one plane 25 extending in the direction of the fixing head 10 to the insertion end 20. In this embodiment, the outer surface 24 is provided with two opposite planes 25, and the insertion end 20 is provided with a plurality of the planes 25 in a radial direction. The locking hole 22 of the 21, the plurality of locking members 23 are respectively locked to the plurality of locking holes 22 and can extend into the inclined hole 21. By extending the plurality of lock members 23 into the inclined holes 21, the cutter 40 can be radially abutted so that the position of the cutter 40 in the extending direction 211 is fixed and does not rotate relative to the bore fixture 1. The two planes 25 make the plurality of keyholes 22 easy to process and have a better fastening effect.

In summary, the present invention utilizes the boring jig to quickly boring, and the processing surface processed by the tool has better concentricity with the rotating axis of the lathe, thereby improving processing quality, manufacturing is easy, and assembly is simple. And low cost.

1‧‧‧Drilling fixture

10‧‧‧Fixed head

20‧‧‧Interrupted end

21‧‧‧ oblique hole

22‧‧‧Keyhole

23‧‧‧Locks

24‧‧‧ outer surface

25‧‧‧ plane

40‧‧‧Tools

Claims (8)

A boring jig for mounting on a rotating seat of a lathe, the rotating base having a rotating shaft center, the lathe further comprising a fixing seat opposite to the rotating seat on the rotating shaft, the fixing seat is fixed a boring tool comprising: a fixing head fixed to the rotating base and rotating around the rotating shaft; and an insertion end opening a slanting hole for inserting the tool, the inclined hole having a An extending direction; wherein, when the fixing head is fixed to the rotating base, the extending direction forms a tilt angle greater than zero with the rotating shaft center, and the inclined angle θ is not more than 5 degrees; wherein the fixing head is internally provided There is an empty chamber that communicates with the inclined hole and is open at one end of the fixed head opposite to the inserted end. The boring jig of claim 1, wherein the empty chamber is diverged away from the insertion end. The boring jig of claim 1, further comprising a large diameter radial flange connected between the fixing head and the insertion end. The boring jig of claim 3, further comprising a small diameter radial flange connected between the large diameter radial flange and the insertion end. The boring jig of claim 1, wherein the insertion end is further provided with at least one locking hole that communicates with the slanting hole, at least one locking member is locked to the at least one locking hole and can be inserted into the hole Oblique hole. The boring jig of claim 1, wherein the angle of inclination is no more than 5 degrees. The boring jig of claim 1, wherein the extending direction is in the same plane as the axis of rotation. The boring jig according to claim 4, wherein the fixing head is internally provided with an empty chamber and has a cylindrical shape; the empty chamber is tapered in a direction away from the insertion end; the empty chamber and the inclined hole Connecting and opening at one end of the fixing head opposite to the insertion end; the outer surface of the insertion end is provided with at least one along the fixing head to a plane extending in the direction of the insertion end; the extending direction is in the same plane as the axis of rotation; the radial dimension of the empty chamber is larger than the radial dimension of the inclined hole, and a shoulder is provided at the connection between the empty chamber and the inclined hole The large-diameter radial flange protrudes radially from the fixing head, and the small-diameter radial flange protrudes radially from the insertion end; the insertion end is further provided with a plurality of radial holes The locking hole is respectively locked to the plurality of locking holes and can extend into the inclined hole; the inclined angle is not more than 3 degrees.