一种钻孔刀具结构

Abstract

本实用新型公开了一种钻孔刀具结构，包括：连接轴上端与机床升降主轴相连接；第一承载柱与连接轴底部相连接；第二承载柱与连接轴底部相连接；第一承载柱和第二承载柱均沿连接轴的径向方向延伸，且第一承载柱和第二承载柱以连接轴的轴线为基准对称分布；第一卡箍件与第一承载柱的外端相连接；第二卡箍件与第二承载柱的外端相连接；第一卡箍件和第二卡箍件内部均固定有电主轴，电主轴的夹持端竖直向下延伸，且电主轴的夹持端夹紧固定有钻头。本实用新型的方案通过通过第一承载柱、第二承载柱、第一卡箍件和第二卡箍件能够实现两组电主轴和钻头的安装，能够同时进行两个孔的加工，有助于提高加工效率。

Claims

1. A drill bit structure, characterized by: include: Connecting shaft (1), the upper end of which is connected to the machine tool lifting spindle; The first bearing column (21) is connected to the bottom of the connecting shaft (1); The second bearing column (22) is connected to the bottom of the connecting shaft (1); The first support column (21) and the second support column (22) both extend along the radial direction of the connecting shaft (1), and the first support column (21) and the second support column (22) are symmetrically distributed with respect to the axis of the connecting shaft (1); The first clamp (31) is connected to the outer end of the first bearing column (21); The second clamp (32) is connected to the outer end of the second bearing column (22); The first clamp (31) and the second clamp (32) are both fixed with an electric spindle (4). The clamping end of the electric spindle (4) extends vertically downward, and the clamping end of the electric spindle (4) is clamped and fixed with a drill bit (5).

2. The drilling tool structure according to claim 1, characterized in that, The first bearing column (21) and the second bearing column (22) are detachably connected to the connecting shaft (1); the first clamp (31) is detachably connected to the first bearing column (21), and the second clamp (32) is detachably connected to the second bearing column (22).

3. The drill bit structure of claim 2, wherein, Also includes: The first support column (21) and the second support column (22) are integral structures to form the support column, and the support column is inserted into the through cavity (12) at the bottom of the connecting shaft (1); A fixed threaded hole (29) is provided through the middle of the bearing column; A fixed positioning hole (14) is provided on the outer wall of the connecting shaft (1). The fixed positioning hole (14) extends radially along the connecting shaft (1) and communicates with the through cavity (12). The fixed positioning hole (14) corresponds to the fixed threaded hole (29). A fixing bolt (15) is provided, which passes through the fixing positioning hole (14) and is threadedly connected to the fixing threaded hole (29).

4. The drill bit structure according to claim 3, wherein Both the supporting column and the through cavity (12) have square cross-sections, and the outer surface of the supporting column is in full contact with the inner wall of the through cavity (12).

5. The drill bit structure according to claim 2, wherein Also includes: A first insertion cavity (23) is provided at the outer end of the first bearing column (21); A first insertion block (33) is provided on the outside of the first clamp (31), and the first insertion block (33) is inserted into the first insertion cavity (23); A first connecting threaded hole (34) is provided through the surface of the first plug-in block (33); A first connecting through hole (25) is provided on the surface of the first bearing column (21), the first connecting through hole (25) is connected to the first insertion cavity (23), and the first connecting through hole (25) corresponds to the first connecting threaded hole (34); The first connecting bolt (24) has its end passing through the first connecting through hole (25) and threadedly connected to the first connecting threaded hole (34).

6. The drill bit structure according to claim 2, wherein Also includes: A second insertion cavity (26) is provided at the outer end of the second bearing column (22); A second insertion block (35) is provided on the outside of the second clamp (32), and the second insertion block (35) is inserted into the second insertion cavity (26); A second connecting threaded hole (36) is provided through the surface of the second plug-in block (35); A second connecting through hole (28) is provided on the surface of the second bearing column (22), the second connecting through hole (28) is connected to the second insertion cavity (26), and the second connecting through hole (28) corresponds to the second connecting threaded hole (36); The end of the second connecting bolt (27) passes through the second connecting through hole (28) and is threadedly connected to the second connecting threaded hole (36).

7. The drilling tool structure according to claim 1, characterized in that, Both the first clamp (31) and the second clamp (32) include: A locking ring (37) has a notch extending through its outer side, and ear plates (38) are formed on both sides of the notch. Fastening bolt (39), the end of which passes through the center hole of the two ear plates (38) and is threaded with a fastening nut (40).

8. The drill bit structure of claim 1, wherein, A connecting flange (11) is formed on the upper end of the connecting shaft (1).

9. The drill bit structure according to claim 1, wherein, Also includes: A positioning threaded hole (13) is provided at the bottom end of the connecting shaft (1). Positioning plate (6), with a positioning through hole (61) through the middle of the positioning plate (6); The positioning bolt (7) has its end passing through the positioning through hole (61) and threadedly connected to the positioning threaded hole (13).

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