阅读说明：本技术 一种台钻深度调节定位机构 (Bench drill degree of depth adjustment positioning mechanism ) 是由 徐宛拓 陈敏 李挺进 徐国军 于 2020-04-24 设计创作，主要内容包括：本发明属于电动工具技术领域,特指一种台钻深度调节定位机构,包括台钻本体以及设置在台钻本体一侧的深度调节机构,深度调节机构包括固定在台钻本体一侧的底座,底座内穿设有转轴,底座内设有回弹件,回弹件一端连接有从动滑块,所述从动滑块一侧抵接有主动滑块,主动滑块上开设有开槽,所述开槽与转轴一端穿设的卡销相卡接,所述从动滑块一侧有滑动压板,所述滑动压板一侧设有旋转锁定套,所述旋转锁定套可以实现对滑块压板对从动滑块的压紧和释放,从而实现切深位置的锁定和释放本发明的目的是提供一种能够提高钻孔深度的调节精度,且更加便于快捷操作的台钻深度调节定位机构。(The invention belongs to the technical field of electric tools, in particular to a bench drill depth adjusting and positioning mechanism, which comprises a bench drill body and a depth adjusting mechanism arranged on one side of the bench drill body, wherein the depth adjusting mechanism comprises a base fixed on one side of the bench drill body, a rotating shaft penetrates through the base, a rebound piece is arranged in the base, one end of the rebound piece is connected with a driven sliding block, one side of the driven slide block is connected with a driving slide block in an abutting mode, the driving slide block is provided with a notch, the notch is clamped with a clamping pin penetrating through one end of the rotating shaft, a sliding pressure plate is arranged on one side of the driven sliding block, a rotary locking sleeve is arranged on one side of the sliding pressure plate, the rotary locking sleeve can realize the compression and release of the sliding block pressure plate on the driven sliding block, therefore, the invention aims to realize locking and releasing of the cutting position and provide a bench drill depth adjusting and positioning mechanism which can improve the adjusting precision of the drilling depth and is more convenient and faster to operate.)

1. A bench drill depth adjusting and positioning mechanism is characterized by comprising a bench drill body (2) and a depth adjusting mechanism (1) arranged on one side of the bench drill body (2), wherein the depth adjusting mechanism (1) comprises a base (1-1) fixed on one side of the bench drill body (2), a rotating shaft (14) penetrates through the base (1-1), a rebound part (1-4) is arranged in the base (1-1), one end of the rebound part (1-4) is connected with a driven sliding block (1-3), a driving sliding block (1-2) is abutted to one side of the driven sliding block (1-3), a slot (60) is formed in the driving sliding block (1-2), the slot (60) is clamped with a clamping pin (14-2) penetrated by one end of the rotating shaft (14), a sliding pressing plate (1-5) is arranged on one side of the driven sliding block (1-3), one side of the sliding pressure plate (1-5) is provided with a rotary locking sleeve (1-6), and the rotary locking sleeve (1-6) can compress and release the slide block pressure plate (1-5) to the driven slide block (1-3), so that the cutting position is locked and released.

2. The depth adjustment positioning mechanism of bench drill according to claim 1, characterized in that the inner wall of the rotary locking sleeve (1-6) is provided with at least two first protrusions (62), and the first protrusions (62) are matched with second protrusions (64) formed on the sliding pressure plate (1-5).

3. The bench drill depth adjusting and positioning mechanism according to claim 1, wherein the driven slide block (1-3) and the driving slide block (1-2) have a size difference in the pressing direction, and the distance between the driven slide block (1-3) and the sliding pressure plate (1-5) is smaller than the distance between the driving slide block (1-2) and the sliding pressure plate (1-5).

4. The table drill depth adjustment positioning mechanism of claim 1, wherein the first projection (62) and the second projection (64) are provided with a bevel (65) on both sides.

5. The bench drill depth adjusting and positioning mechanism according to claim 1, characterized in that at least one groove (1-5-2) is arranged on the outer side of the sliding pressure plate (1-5), and the groove (1-5-2) is clamped with at least one boss (1-1-3) arranged on the inner wall of the base (1-1).

6. The bench drill depth adjusting and positioning mechanism according to claim 1, wherein the abutting position of the driven slide block (1-3) and the driving slide block (1-2) forms an included angle α with the diameter direction.

7. The bench drill depth adjusting and positioning mechanism according to claim 1, characterized in that a locking screw (1-8) penetrates through the rotary locking sleeve (1-6), and the locking screw (1-8) is in threaded connection with a threaded hole (14-1) formed in one end of the rotating shaft (14).

8. The bench drill depth adjusting and positioning mechanism according to claim 7, characterized in that an elastic wave-shaped spring plate (1-7) is arranged between the rotation locking rotating sleeve (1-6) and the locking screw (1-8).

9. The bench drill depth adjusting and positioning mechanism according to claim 1, characterized in that a third annular groove (66) for placing a resilient member (1-4) and a fourth annular groove (67) for placing a driven slider (1-3) and a driving slider (1-2) are respectively formed in the base (1-1), a positioning hole (68) for fixing the resilient member (1-4) is formed at the bottom of the third annular groove (66), and the other end of the resilient member (1-4) is clamped with the groove (1-3-2) formed in the driven slider (1-3).

10. The depth adjustment positioning mechanism of the bench drill according to claim 1, wherein the bench drill body is provided with an unlocking position (2-1) and a locking position (2-2), and the outer wall of the rotary locking sleeve (1-6) (1-6) is provided with an indicating device (1-6-1) for indicating the unlocking position (2-1) and the locking position (2-2).

Technical Field

The invention belongs to the technical field of electric tools, and particularly relates to a depth adjusting and positioning mechanism of a bench drill.

Background

Table drill rigs are widely used in many places, such as industry and home, to drill holes of various diameters and depths in various materials.

The drilling machine comprises an adjusting and positioning mechanism for controlling the depth size of the drilled hole, and the holes with the same depth size can be drilled repeatedly in batches.

There are two common adjusting and positioning mechanisms: one is fixed on a handle turntable, and the other is fixed on the outer sleeve of a main shaft of a drilling machine.

In the former method, a metal ring is sleeved on a fixed disk of a drill handle, a locking knob is screwed on the outer ring of the ring, the metal ring is provided with a positioning scale value, and the metal ring is locked by the knob after being positioned and rotates along with the rotation of the handle.

In the latter method, a group of parts is fixed on the spindle sleeve of the drilling machine, the group of parts comprises a movable part which can move up and down, and the movable block indicating block is locked by a tool during positioning. It moves up and down with the lifting of the drill bit.

Both of the above two structures have significant drawbacks: the former has small operation space, small marks which are difficult to identify, and is very inconvenient because the former often needs two hands to operate; the latter structure often just can reach great locking power with the help of the instrument, and the movable block displacement distance is unanimous with actual depth of cut distance, and the scale can not be enlarged the discernment, leads to having certain influence to positioning accuracy when the locking, and the scale is too little simultaneously difficult for discerning.

Disclosure of Invention

The invention aims to provide a bench drill depth adjusting and positioning mechanism which can improve the adjusting precision of the drilling depth and is more convenient and faster to operate.

The purpose of the invention is realized as follows: the utility model provides a bench drill degree of depth adjustment positioning mechanism, includes the bench drill body and sets up the degree of depth adjustment mechanism in bench drill body one side, degree of depth adjustment mechanism is including fixing the base in bench drill body one side, wear to be equipped with the pivot in the base, be equipped with the rebound spare in the base, rebound spare one end is connected with driven slider, driven slider one side butt has the initiative slider, the fluting has been seted up on the initiative slider, the fluting is worn to establish the joint of cotter looks joint with pivot one end, driven slider one side has sliding plate, sliding plate one side is equipped with the rotation locking cover, and the rotation locking cover can realize compressing tightly and the release to driven slider to the sliding plate to realize the locking and the release of cut-depth position.

Preferably, the inner wall of the rotary locking sleeve is provided with at least two first lugs, and the first lugs are matched with second lugs formed on the sliding pressure plate.

Preferably, the driven slide block and the driving slide block have size difference in the direction of being pressed, and the distance between the driven slide block and the sliding pressure plate is smaller than that between the driving slide block and the sliding pressure plate.

Preferably, the first lug and the second lug are provided with inclined planes on two sides.

Preferably, the sliding pressure plate is provided with at least one groove on the outer side, and the groove is clamped with at least one boss arranged on the inner wall of the base.

Preferably, an included angle alpha exists between the abutting position of the driven slide block and the driving slide block and the diameter direction.

Preferably, a locking screw penetrates through the rotary locking sleeve and is in threaded connection with a threaded hole formed in one end of the rotating shaft.

Preferably, an elastic wave-shaped elastic sheet is arranged between the rotation locking rotating sleeve and the locking screw to obtain the rebounding pre-tightening force to the rotating sleeve, although the elastic element is not limited to a specific wave-shaped elastic sheet and can be other types of elastic parts.

Preferably, a third annular groove for placing the resilient member and a fourth annular groove for placing the driven slide block and the driving slide block are respectively formed in the base.

Preferably, the third annular groove bottom is provided with a positioning hole for fixing the rebound part, and the other end of the rebound part is clamped with a groove position arranged in the driven sliding block.

Preferably, the bench drill body is respectively provided with an unlocking position and a locking position, and the outer wall of the rotary locking sleeve is provided with an indicating device for indicating the unlocking position and the locking position.

Compared with the prior art, the invention has the outstanding and beneficial technical effects that: the bench drill depth positioning mechanism can drive the sliding pressure plate to fix the driven sliding block by rotating the rotary locking sleeve, so that the drilling depth can be adjusted by a user, and the bench drill depth positioning mechanism is convenient to operate quickly by the user.

Drawings

FIG. 1 is an exploded view of the depth adjustment positioning mechanism of the present invention;

FIG. 2 is a functional schematic of the base of the present invention;

FIG. 3 is a schematic structural diagram of a driving slider and a driven slider according to the present invention;

FIG. 4 is a schematic view of the slider press plate of the present invention;

FIG. 5 is a schematic structural view of the locking sleeve of the present invention;

FIG. 6 is a schematic view of the non-locking state of the follower slide of the present invention;

FIG. 7 is a schematic view of the locking state of the follower slide of the present invention;

FIG. 8 is a schematic diagram of the locking state stress of the driving slider to the driven slider after locking;

FIG. 9 is a schematic view of the present invention showing the position and status indication of the rotating locking sleeve in the unlocked state;

FIG. 10 is a schematic view of the present invention showing the position and status of the rotary lock sleeve in the locked state.

Detailed Description

The invention is further described below in terms of specific examples.

As shown in fig. 1-5: a bench drill depth adjusting and positioning mechanism comprises a bench drill body 2 and a depth adjusting mechanism 1 arranged on one side of the bench drill body 2, wherein the depth adjusting mechanism 1 comprises a base 1-1 fixed on one side of the bench drill body 2, a rotating shaft 14 penetrates through the base 1-1, a rebound part 1-4 is arranged in the base 1-1, one end of the rebound part 1-4 is connected with a driven sliding block 1-3, one side of the driven sliding block 1-3 is abutted with a driving sliding block 1-2, a notch 60 is formed in the driving sliding block 1-2, the notch 60 is clamped with a bayonet 14-2 penetrated by one end of the rotating shaft 14, a sliding pressing plate 1-5 is arranged on one side of the driven sliding block 1-3, a rotary locking sleeve 1-6 is arranged on one side of the sliding pressing plate 1-5, and the rotary locking sleeve 1-6 can realize that the sliding plate 1-5 is clamped with the driven sliding block 1-3 And (4) pressing and releasing, so that the locking and releasing of the cutting position are realized.

The depth adjusting mechanism 1 is coaxial with the rotating shaft 14 and is arranged at the other end corresponding to the operating handle.

The spindle 14 is provided with a thread 14-1 at the spindle nose, and the thread 14-1 can be provided with a locking screw 1-8 for locking the axial position of the rotary locking sleeve 1-6 on the spindle 14.

The shaft head of the rotating shaft 14 is provided with a bayonet 14-2, the bayonet 14-2 is arranged in the groove 60 of the driving slide block 1-2, and the rotating shaft 14 drives the driving slide block 1-2 to synchronously rotate through the shaft 14-2.

The slot position 1-3-2 of the driven slide block 1-3 is acted by the return end 1-4-2 of the return part 1-4, so that the driven slide block 1-3 always obtains a resilience force, and the driven slide block 1-3 is ensured to be always kept in contact with the driving slide block 1-2. The driven sliding block 1-3 is always acted by the resilience force of a resilience part 1-4-1, so that the driven sliding block 1-3 is always kept in contact with the driving sliding block 1-2. The resilient member 1-4 is not limited to the illustrated 1-4-1 torsion spring and may be any form of resilient member.

The base 1-1 of the depth adjusting mechanism 1 on the bench drill body, the base 1-1 is coaxial with the rotating shaft 14, the rotating shaft 14 penetrates through the axle center of the base 1-1 of the depth adjusting mechanism 1, a third annular groove 66 coaxial with the axis of the base 1-1 is arranged on the end surface of the base 1-1, the driving slide block 1-2 and the driven slide block 1-3 are both arranged in the third annular groove 66, the third annular groove 66 can rotate around the axis of the base 1-1 in a circumferential manner, the height difference exists between the driving sliding block 1-2 and the driven sliding block 1-3 in the axial direction as shown by an arrow in fig. 7, the height of the driven sliding block 1-3 is generally larger than that of the driving sliding block 1-2, a sliding block pressing plate 1-5 matched with the annular groove in shape is arranged at the upper part of the third annular groove 66, and a second bump 64 is arranged on the sliding block pressing plate 1-5; a rotary locking sleeve 1-6 is arranged above the sliding block pressing plate 1-5, and the rotary locking sleeve 1-6 can rotate around the axis of the base 1-1; the inner end face of the rotary locking sleeve 1-6 is provided with a first lug 62, and the first lug 62 is matched with a second lug 64 formed on the sliding pressure plate 1-5.

When the synchronous circular motion device works, the bayonet lock or other forms of connection on the rotating shaft 14 drives the driving slide block 1-2 to do circular motion in the third annular groove 66 and the fourth annular groove 67, the driving slide block 1-2 simultaneously pushes the driven slide block 1-3 contacted with the driving slide block to do synchronous circular motion, and when the operating handle drives the rotating shaft 14, the bayonet lock 14-2 on the rotating shaft 14. The rotary locking sleeve 1-6 is locked by the locking screws 1-8 because the rotary locking sleeve 1-6 can generate a larger axial force to press the slide block pressing plate 1-5, the slide block pressing plate 1-5 further transmits the pressing force to the slave block sliding plate 1-3 below the rotary locking sleeve 1-6, and the slave block is pressed by the bottom surfaces of the third annular groove 66 and the fourth annular groove 67 and the lower surface 1-5-4 of the slide block pressing plate respectively to generate a very large axial force And large locking force is fixed at a specific position in the third annular groove 66 and the fourth annular groove 67, and is used for ensuring that the axial height of the driving slide block 1-2 is not higher than that of the driven slide block 1-3, so that the lower surface 1-5-4 of the slide block pressing plate can not generate pressing force on the driving slide block 1-2, and the driving slide block 1-2 can still freely move in the third annular groove 66 and the fourth annular groove 67.

The operating handle is loosened to drive the rotating shaft 14 to rotate, the rotating shaft 14 drives the driving sliding block 1-2 to rotate through the shaft 14-2, when the hole is drilled and cut again, the operating handle drives the rotating shaft 14 to rotate and simultaneously drives the driving sliding block 1-2 to rotate, when the driving sliding block 1-2 rotates to the position of the driven sliding block 1-3, the driving sliding block 1-2 is blocked by the driven sliding block 1-3 and cannot rotate continuously, so that the driving sliding block stops at the position locked by the driven sliding block 1-3 last time, and the position is the position where the drilling sleeve 12 is operated last time, namely the operating depth position of the drill chuck, and the setting of the drilling depth value is realized.

The locking sleeve 1-6 is rotated to an unlocking position, the first lug 62 on the inner surface of the locking sleeve 1-6 is rotated to a gap between the two second lugs 64 on the upper end surface of the sliding block pressing plate 1-5, the pressing force of the lower part of the sliding block pressing plate 1-5 on the slave sliding block 1-3 disappears due to the upward movement of the locking sleeve 1-6, the slave sliding block 1-3 is restored to a free state, the slave sliding block 1-3 can be pushed by the master sliding block 1-2, and the slave sliding block 1-3 can also restore the action of the resilience force of the rebounded part 1-4, so that the slave sliding block 1-3 is ensured to be always kept in contact with the master sliding block 1-2.

As shown in fig. 6-8:

fig. 6 is a schematic diagram of a non-locking state of the driving slider 1-2 and the driven slider 1-3, wherein the driving slider 1-3 is not locked by the pressure of the slider pressing plate 1-5 and is in a free state, and the driven slider 1-3 is ensured to be always in contact with the driving slider 1-2 under the action of the resilience force of the resilient member extension rod 1-4-1.

Fig. 7 is a schematic diagram of the locking state of the driving slider 1-2 and the driven slider 1-3, in which the driven slider 1-3 is locked by the pressure of the slider pressing plate 1-5 and is in a fixed locking state, the driving slider 1-2 returns counterclockwise under the driving of the handle, and the driven slider 1-3 is separated from the driving slider 1-2 by a certain distance.

FIG. 8 is a schematic diagram of the locked state stress of the driving slider 1-2 and the driven slider 1-3, the driving slider 1-2 is driven by the operating handle, the rotating shaft 14 and the rotating shaft bayonet 14-2 to contact the driven slider 1-3 again, i.e. at a set depth position, on the action surface of the driving slider 1-2 and the driven slider 1-3, the action force F of the driving slider 1-2 on the driven slider 1-3 is decomposed into a circumferential force F1 and a radial force F2 because the contact surface is not completely radial but forms an angle α with the diameter direction, F is a radial pressure of the outer side wall 1-3 of the driven slider 1-3 on the outer side wall of the sliding chute 1-1-1-1, F2 is a radial pressure of the outer side wall 1-3 of the driven slider 1-3 on the outer side wall of the driving slider 1-2, which enables the resistance of the driven slider 1-3 to generate a force other than the locking pressure of the slider 1-5, these forces further increase the frictional resistance of the follower slider 1-3 and the locking position is more reliable.

Fig. 9-10 illustrate two specific positions of the rotary locking sleeve 1-6 with locking and release.

The two specific positions of the rotary locking sleeve 1-6 may have more than two methods of identification to indicate the current state:

1, an indication window 1-6-2 is arranged on the outer end face of a rotary locking sleeve 1-6 along the circumferential direction, the indication window 1-6-2 corresponds to the upper end face of a sliding block pressing plate 1-5, and the position of the upper end face of the sliding block pressing plate corresponding to the indication window 1-6-2 can be coated with different colors or fonts at two specific locking and unlocking positions to indicate the locking and unlocking positions.

2 an indicating device 1-6-1 is arranged on the periphery of the rotary locking sleeve 1-6, an unlocking position 2-1 and a locking position 2-2 are respectively arranged on the bench drill body 2, and the locking and unlocking positions can be indicated by rotating the rotary locking sleeve 1-6 to the two positions.

In fig. 10, when the rotary locking sleeve 1-6 rotates clockwise by 90 degrees at any depth of the drilled hole, the depth adjusting positioning mechanism is in a locking state, the driven slide block 1-3 is locked at a fixed position, and when the driving slide block 1-2 rotates to the position of the driven slide block 1-3 again, the driving slide block 1-2 is blocked by the driven slide block 1-3 and cannot rotate continuously.

In fig. 9, the locking sleeve 1-6 is rotated by 90 degrees counterclockwise, the depth adjusting and positioning mechanism is in a release state, the driven sliding block 1-3 can flexibly rotate, and the cutting depth cannot be locked no matter what state the handle is.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.