TW201502386A - Drill bit fixture - Google Patents

Abstract

A drill bit fixture comprises a first jaw and a second jaw coaxially pivoted on a base, and the base is pivoted with a swinging member. Both ends of the swinging member are respectively contacted with a driver and a push rod. The swinging member utilizes the driver to drive the push rod, and the contact portion of the push rod makes the first and second jaws respectively swing toward the directions away from each other to release the drill bit; and, employing a first spring and a second spring disposed on the base to make the first and second jaws swing by spring pressure toward the directions approaching to each other for clamping the drill bit. Thus, the present invention may solve the issue of conventional drill bit fixture being too complicated.

Description

Drill edge fixture

The present invention relates to the construction technique of a jig, and more particularly to a drill jig.

According to the micro drill bit, the drill bit with the diameter of the drill bit can be reduced to about 0.1 mm. It has been widely used in the drilling of printed circuit boards, but the drill tip is used after many times of use. It is easy to wear and damage, and the drill bit is unusable; in order to prolong the service life of the drill bit, the current practice is to re-use the drill bit of the worn drill bit by a grinder for grinding and grinding, so that the drill bit of the drill bit can be recovered for drilling. Chisel the correct aperture.

At present, when the micro drill bit is subjected to grinding by the grinder, in order to prevent the drill edge from being broken due to shaking during grinding, to ensure the grinding quality of the drill bit, the drill bit of the drill is usually placed on a positioning base. And the cutting edge is protected by the device capable of automatically opening and closing on the body; and the automatic opening and closing device of the seat of the conventional micro drill bit mainly forms a V-shaped groove on the top of the seat body, and the drill bit The drill blade is placed at the bottom of the V-shaped groove, and is embedded into the V-shaped groove from top to bottom by a pressing member, so that the drill edge is positioned between the V-shaped groove and the pressing member, which is beneficial to the grinding machine. The cutting edge is machined and ground.

The above-mentioned pressing member is generally driven by an electromagnet and embedded in the V-shaped groove in a straight path; however, for a fine drill having a diameter of about 0.1 mm, the pressing member is pressed from the top to the bottom in a straight path. The operation of the cutting edge can stably hold the cutting edge; however, when the diameter of the drill bit of the source drill bit is large and small, the V-shaped groove is positioned to receive the center point of the grinding, and the cutting edge of the diameter is different. And the upper and lower changes, causing the cutting edge to deviate from the grinding The condition of the preset center point, which in turn affects the grinding quality of the drill bit, needs to be improved.

Chen Ru Taiwan Patent M408447 discloses a grinding micro drill The automatic opening and closing device for the head socket is to convert the operation state between the opening and closing members of the bearing seat into a cycloidal operation from a straight line operation, and shorten the between the opening and closing members under the premise of maintaining the linear driving force. Move the stroke to maintain the positioning stability of the drill edge, and have the deceleration effect during clamping to avoid bumping the drill edge; at the same time, the drilling edge is positioned by clamping to improve the positioning accuracy of the drill edge; however, the above Although the patent can effectively solve the problem of conventional cutting edge clamping and fixing, it has the problem that the structure is too complicated.

In view of this, it is an object of the present invention to provide a cutting edge clamp that can grip and release a cutting edge in a scissors-like manner of operation. Specifically, the technical means of the cutting edge clamp of the present invention comprises: a first clamping jaw having a first pivoting portion pivoted on the body, the first pivoting portion forming a first claw on each side And a second end portion; a second clamping portion having a second pivoting portion coaxial with the first pivoting portion, the second pivoting portion forming a second claw portion and a second portion respectively The second claw portion is located at the opposite end of the first claw portion; a swinging member has a third pivoting portion pivotally mounted on the base body, and the first sides of the third pivoting portion respectively form a first a pushing portion and a second pushing portion, the first pushing portion contacting a driver, the second pushing portion contacting a push rod, and the contact sides of the one of the push rods respectively contact the first end portion and the second end portion; a spring disposed between the seat body and the first jaw to drive the first jaw to swing to move the first claw toward the second claw portion; a second spring disposed on the seat body and the second portion Between the jaws, the second jaw can be driven to swing to move the second claw toward the first claw portion; wherein the first pushing portion is linked to the second pushing portion via the driving of the driver Further, the first end portion and the second end portion are pushed through the contact portion of the push rod, and the first claw portion and the second claw portion are respectively swung in a relatively distant direction to release the drill edge, and the first spring and a second spring that causes the first claw and The second claws are respectively swung in a relatively close direction to grip the cutting edge.

According to this, the first jaw and the second jaw are scissor-shaped Provided on the base body, when the first claw portion and the second claw portion are in a closed state, the first end portion and the second end portion can be simultaneously pushed through the contact portion of the push rod, thereby driving the first claw portion and the second claw portion The claws are relatively far apart, so that the first and second claws are in an open state, thereby being used to release the clamped cutting edge. When the first claw portion and the second claw portion are in an open state, the first claw portion and the second claw portion can be relatively closely displaced by the negative spring force by the first spring and the second spring. In turn, the first jaw and the second jaw are closed, thereby being used to hold the cutting edge to be ground.

In a specific implementation, the contact portion has a center line, and the axes of the first pivoting portion and the second pivoting portion are respectively aligned with the center line, and the contact portion can be along the center line toward the first pivoting portion and The axial position of the second pivoting portion is moved, and the contact portion is formed on the two sides of the center line to form a first inclined surface and a second inclined surface of the isosceles, respectively, and the contact portion contacts the first inclined surface and the second inclined surface respectively One end and a second end. The distance between the first pivoting portion and the first end portion is equal to the distance between the second pivoting portion and the second end portion, and a first angle and a same angle are formed respectively with the center line. The second angle. Accordingly, the first inclined surface and the second inclined surface are simultaneously brought into contact with the first end portion and the second end portion respectively, and the contact portion can be along the center line toward the axis of the first pivot portion and the second pivot portion When the position is moved, the first inclined surface and the second inclined surface can simultaneously push the first end portion and the second end portion to swing at equal angles, thereby enabling the first claw portion and the second claw portion to simultaneously Keep away from the cutting edge.

The first end portion and the second end portion respectively pivot a first roller and a second roller, and the push rod swings the first claw portion and the second claw portion by pushing the first roller and the second roller. Accordingly, the push rod reduces the wear and tear caused by the friction when the push rod pushes the first end portion and the second end portion by rolling contact with the first roller and the second roller.

The distance between the third pivoting portion and the first pushing portion is greater than the third pivot The distance between the joint and the second push portion. According to the difference between the distances of the two, the travel of the driver when the second push portion is displaced by the first pushing portion is changed, thereby controlling the movement stroke when the first claw portion and the second claw portion are opened to reduce the first claw. The working hours required for opening the second claw and the second claw.

Forming an opening between the first claw portion and the second claw portion The receiving groove can accommodate the drill bit. Accordingly, the drill bit is fixed to prevent the drill blade from affecting the grinding quality due to the vibration of the drill bit when the first claw portion and the second claw portion grip the cutting edge to receive the grinding.

The push rod is coupled to a third spring to provide an elastic force to the push rod Return to the original position. Accordingly, the push rod can be moved away from the first pivoting portion and the second pivoting portion along the center line in a negatively loaded spring manner, so that the contact portion of the push rod pushes the first end portion and the second end portion again. Further, the first claw portion and the second claw portion are again brought into an open state.

The technical means and methods of the above described methods and devices For details of the specific implementation, please refer to the following examples and drawings.

10‧‧‧ body

20‧‧‧First jaw

201‧‧‧ accommodating slots

21‧‧‧First pivotal

22‧‧‧First claw

23‧‧‧ First end

231‧‧‧First wheel

30‧‧‧second jaw

31‧‧‧Second pivotal

32‧‧‧second claw

33‧‧‧ second end

331‧‧‧Second wheel

40‧‧‧Swinging parts

41‧‧‧ Third pivotal

42‧‧‧ first push

43‧‧‧second push

51‧‧‧First spring

52‧‧‧Second spring

53‧‧‧ Third spring

60‧‧‧ drive

70‧‧‧Put

71‧‧‧Contacts

711‧‧‧ first slope

712‧‧‧second slope

80‧‧‧ drill bit

81‧‧‧Drill

91‧‧‧ center line

Θ1, θ2, θ3,

Θ4, α‧‧‧ angle

H1, h2, h3,

H4‧‧‧ spacing

1 is a schematic view showing the configuration of an embodiment of the present invention.

Figure 2 is a plan view of Figure 1.

Fig. 3 is a partial enlarged view of Fig. 1;

4 and 5 are schematic views of the operation of Fig. 1, respectively.

Referring to FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the present invention is illustrated. FIG. 1 is a schematic view showing an arrangement of an embodiment of the present invention, FIG. 2 is a top view of FIG. 1 , and FIG. 3 is a view A partial enlarged view of 1. The above description provides a drill holder including a first jaw 20, a second jaw 30, a swinging member 40, a first spring 51 and a second spring 52. among them:

The first clamping portion 20 has a first pivoting portion 21 pivotally mounted on the base body 10. The first pivoting portion 21 defines a first claw portion 22 and a first end portion 23 on both sides. A claw portion 22 is formed by the top of the first jaw 20 toward the side of the seat body 10, and the first end portion 23 is located on the bottom side of the first jaw 20.

The second clamping jaw 30 has a second pivoting portion 31 coaxial with the first pivoting portion 21, and the second clamping jaw 30 is pivotally disposed on the first clamping jaw 20 and is pivotally mounted on the base body 10; In an implementation, the first pivoting portion 21 can be a shaft hole, the second pivoting portion 31 can be a shaft, and the shaft can be pivoted in the shaft hole; the second pivoting portion 31 is formed on both sides. a second claw portion 32 and a second end portion 33 formed by the top of the second jaw 30 toward the side of the seat body 10, the second end portion 33 being located at the second clip The bottom side of the claw 30 is located, and the second claw portion 32 is located at the opposite end of the first claw portion 22. In practice, the first jaw 20 and the second jaw 30 are pivoted on the base 10, and the first end 23 and the second end 33 are respectively moved toward and away from each other. The direction of movement is further coupled to enable the first jaw 20 and the second jaw 30 to grip and release the operation of the cutting edge 81.

The oscillating member 40 has a third pivoting portion 41 pivotally disposed on the base body 10. The third pivoting portion 41 is disposed coaxially with the first pivoting portion 21 and the second pivoting portion 31. A first pushing portion 42 and a second pushing portion 43 are respectively formed on the two sides of the third pivoting portion 41. The first pushing portion 42 contacts a driver 60, and the second pushing portion 43 contacts a push rod 70. A contact portion 71 formed at one end of the rod 70 contacts the first end portion 23 and the second end portion 33 on both sides. When the first pushing portion 42 drives the second pushing portion 43 via the driving of the driver 60, the second pushing portion 43, the push rod 70 pushes the first end portion 23 and the second end portion 33 relatively away from each other, so that the first claw portion 22 and the second claw portion 32 are opened, and can be used for clamping the fixed cutting edge 81 is released and waits for the next time the drill blade 81 to be clamped is placed.

The first spring 51 is disposed on the base 10 and the first jaw 20 The first spring 51 can drive the first clamping jaw 20 to swing, so that the first claw portion 22 swings toward the second claw portion 32 along with the first clamping jaw 20, and the second spring 52 is disposed on the seat body. Between the second jaws 30 and the second jaws 30, the second springs 52 can drive the second jaws 30 to swing, thereby causing the second claws 32 to approach the first claws 22 as the second jaws 30 swing, by loading The first spring portion 22 of the negative spring is relatively close to the second claw portion 32, thereby bringing the first jaw 20 and the second jaw 30 into a closed state. In addition, the push rod 70 is coupled to a third spring 53 so that the push rod 70 carrying the negative spring can have a function of automatically returning to the original position, so that the push rod 70 pushes the first end portion 23 and the second end again. The portion 33 further brings the first claw portion and the second claw portion into an open state to release the polished drill edge 81 and the drill edge 81 to be ground.

Next, referring to FIG. 3, a partial enlarged view of FIG. 1 is disclosed. The contact portion 71 has a center line 91. The axes of the first pivoting portion 21 and the second pivoting portion 31 are respectively aligned with the center line 91. The contact portion 71 can be along the center line 91 toward the first pivot. The axial position of the connecting portion 21 and the second pivoting portion 31 is moved, and the contact portion 71 is formed on the two sides of the center line 91 to form a first inclined surface 711 and a second inclined surface 712 of the isosceles, respectively, and the contact portion 71 is The first slope 711 and the second slope 712 contact the first end portion 23 and the second end portion 33, respectively. The distance h3 between the first pivoting portion 21 and the first end portion 23 is equal to the spacing h4 between the second pivoting portion 31 and the second end portion 33, and is formed at the same angle as the centerline 91. A first angle θ1 and a second angle θ2. Accordingly, the first end portion 23 and the second end portion 33 have the same distance from the center line 91. When the contact portion 71 can extend along the center line 91 toward the first pivot portion 21 and the second pivot portion 31, When the axial center position is moved, the first inclined surface 711 and the second inclined surface 712 of the isosceles on the contact portion 71 simultaneously push the first end portion 23 and the second end portion 33 to swing at equal angles in a relatively distant direction, thereby The first claw portion 22 and the second claw portion 32 can simultaneously release the drill edge 81.

In addition, the first end portion 23 and the second end portion 33 are respectively pivoted a first roller 231 and a second roller 331 enable the push rod 70 to be pushed The first roller 231 and the second roller 331 are moved to further swing the first claw portion 22 and the second claw portion 32 by rolling contact between the push rod 70 and the first roller 231 and the second roller 331. The wear of the push rod 70 due to friction when the first end portion 23 and the second end portion 33 are pushed is reduced to facilitate the durable use of the push rod 70.

Next, please refer to FIG. 1 , illustrating the third pivoting portion 41 and the first The distance h1 between the pushing portions 42 is greater than the distance h2 between the third pivoting portion 41 and the second pushing portion 43, and the angle α between the three is less than 180 degrees. For the first claw portion 22 and the second claw portion 32, the drill edge 81 having a diameter of about 0.1 mm is to be clamped and released, and the first claw portion 22 and the second claw portion 32 need only be slightly displaced. The displacement generated by the general driver 60 usually exceeds this range. Therefore, the large stroke displacement provided by the driver 60 must be converted into a small stroke displacement via the swinging member 40 for use by the push rod 70, so the third pivot portion is used. As a fulcrum, the distance between the first pushing portion 42 and the second pushing portion 43 and the third pivoting portion 41 is h1 and h2 as a swing arm, and the difference between the lengths of the distances h1 and h2 is used to change the driver 60 to drive the first pushing portion 42. When the displacement is performed, the second pushing portion 43 follows the displacement amount of the linkage, so that the large stroke displacement of the first pushing portion 42 can be converted into the micro stroke displacement of the second pushing portion 43, thereby driving the push rod 70 to perform a slight stroke displacement to shorten the The movement stroke of the one claw portion 22 and the second claw portion 32 when opening is reduced to reduce the labor time required for the first claw portion and the second claw portion to open.

Please refer to FIG. 2 , the first claw portion 22 and the second claw portion 32 are illustrated. An accommodating groove 201 is formed, and the accommodating groove 201 is openable above the base 10 in the present embodiment, and the micro-bit 80 can be accommodated, and the inner walls of the two sides of the accommodating groove 201 are The side profile of the drill bit 80. Accordingly, in order to fix the drill bit 80, when the first claw portion 22 and the second claw portion 32 are gripped by the cutting edge 81 for grinding, the drill edge 81 is affected by the vibration of the drill bit 80 to affect the polishing quality.

Through the composition of the above components, when the first pushing portion 42 is driven When the second pushing portion 43 is swung by the device 60 (as shown in FIG. 4 ), the push rod 70 is driven by the second pushing portion 43 toward the first pivoting portion 21 and the second pivoting portion 31 . When the position is moved, the first end portion 23 and the second end portion 33 are swung in a relatively distant direction by the pushing of the first inclined surface 711 and the second inclined surface 712, and the first claw portion 22 and the second claw portion 32 are relatively separated from each other. The first jaw 20 and the second jaw 30 are opened. The drill edge 81 of the drill bit 80 is placed between the first claw portion 22 and the second claw portion 32, and the push rod 70 is first returned to the original position via the negative spring pressure of the third spring 53 (as shown in FIG. 5), and then The first end portion 23 and the second end portion 33 are swung in a relatively close direction by the first spring 51 and the second spring 52 disposed on the base body 10, and the first claw portion 22 and the second claw portion 22 are coupled together. The claws 32 are relatively close. The drill blade 81 is clamped by the first claw portion 22 and the second claw portion 32 which are relatively close to each other (as shown in FIG. 1 ). When the drill blade 81 receives the first claw portion 22 and the second claw portion 32 and is clamped and fixed, The grinding operation of the drill blade 81 can be performed.

According to the description of the above embodiments, the drill jig of the present invention is advantageous The first jaw and the second jaw pivoted on the base body in a scissor shape, and the push rod simultaneously pushes the first end portion and the second end portion to swing in a relatively distant direction, thereby coupling the first claw portion with The second claw portion is in an open state, and the first claw portion and the second claw portion are swung in a relatively close direction by the negative spring pressure of the first spring and the second spring to be in a closed state, thereby achieving clamping and releasing the drill. The purpose of the blade.

The above embodiments are merely illustrative of preferred embodiments of the present invention. The formula is not to be construed as limiting the scope of the invention. It should be noted that various modifications and improvements may be made without departing from the spirit and scope of the invention. Therefore, the present invention should be based on the content of the claims defined in the scope of the patent application.

10‧‧‧ body

20‧‧‧First jaw

21‧‧‧First pivotal

22‧‧‧First claw

23‧‧‧ First end

30‧‧‧second jaw

31‧‧‧Second pivotal

32‧‧‧second claw

33‧‧‧ second end

40‧‧‧Swinging parts

41‧‧‧ Third pivotal

42‧‧‧ first push

43‧‧‧second push

51‧‧‧First spring

52‧‧‧Second spring

53‧‧‧ Third spring

60‧‧‧ drive

70‧‧‧Put

71‧‧‧Contacts

80‧‧‧ drill bit

81‧‧‧Drill

‧‧‧‧ angle

H1, h2‧‧‧ spacing

Claims (8)

A cutting edge clamp, comprising: a first clamping jaw having a first pivoting portion pivoted on a body, the first pivoting portion forming a first claw portion and a first end portion respectively; a second clamping portion having a second pivoting portion coaxial with the first pivoting portion, the second pivoting portion forming a second claw portion and a second end portion respectively on the two sides, the second claw portion The first pivoting portion is disposed on the opposite end of the first claw portion. The third pivoting portion has a first pushing portion and a second pushing portion on both sides of the third pivoting portion. The first pushing portion contacts a driver, the second pushing portion contacts a push rod, and the contact portions of the one of the push rods respectively contact the first end portion and the second end portion; a first spring is disposed on the seat body Between the first jaw and the first jaw, the first jaw is driven to move to move the second claw to the second claw; a second spring is disposed between the seat and the second jaw and can be driven The second jaw swings to move the second claw toward the first claw portion; wherein the first pushing portion is linked to the second pushing portion via the driving of the driver, and is further connected via the pushing rod The first end portion and the second end portion respectively push the first claw portion and the second claw portion to swing away from each other to release the cutting edge, and the first spring and the second spring make the first The claw portion and the second claw portion are respectively swung in a relatively close direction to grip the drill edge. The cutting edge clamp of claim 1, wherein the contact portion has a center line, and the axes of the first pivoting portion and the second pivoting portion are respectively aligned with the center line, and the contact portion can be along The center line moves toward the axial center position of the first pivotal portion and the second pivotal portion. The cutting edge clamp of claim 2, wherein the contact portion forms a first inclined surface and a second inclined surface of the isosceles on both sides of the center line, and the contact portion is respectively separated by the first inclined surface and the second inclined surface respectively Contacting the first end and the second end. The cutting edge clamp of claim 2, wherein a distance between the first pivoting portion and the first end portion is equal to the second pivoting portion and the second end portion The distance between the first angle and the second angle formed by the same angle with the center line. The cutting edge clamp of claim 1, wherein the first end portion and the second end portion respectively pivot a first roller and a second roller, and the push rod pushes the first roller and the second roller. Further, the first claw portion and the second claw portion are swung. The cutting edge clamp of claim 1, wherein a distance between the third pivoting portion and the first pushing portion is greater than a distance between the third pivoting portion and the second pushing portion. The cutting edge clamp of claim 1, wherein the first claw portion and the second claw portion form an outwardly opening receiving groove for receiving the cutting edge. The cutting edge clamp of claim 1, wherein the push rod is coupled to a third spring to provide an elastic force to return the push rod to the original position.