CN201086141Y - Quick-release device of drilling tool - Google Patents

Abstract

A quick-release device of a drilling cutter comprises a transmission rod and a matched cutter, wherein an inserting part with a smaller diameter is formed at the front end part of the transmission rod, three containing holes are formed in the peripheral surface of the inserting part at equal intervals in a penetrating mode, the inner side of each containing hole is narrower, a round part is formed at the front end of each containing hole, a cylindrical part is formed at the rear end of each containing hole, balls and rollers are contained in the round part and the cylindrical part respectively, a torsion assembly is sleeved around the inserting part in a rotatable mode and is positioned, a ball notch and a roller notch are respectively formed in the round part and the cylindrical part of each containing hole in a concave mode, three positioning grooves are formed in the peripheral surface of the rear end of the cutter corresponding to the containing holes, and circular positioning grooves and cylindrical positioning grooves are formed in the front end and the rear end of each positioning groove.

Description

Quick release device for drilling tools

technical field

The utility model relates to a cutting tool, in particular to a quick dismantling device for a circular cutting tool.

Background technique

The existing tool quick release device can provide the function of selectively inserting and removing the tool or combining it with the transmission rod, so as to achieve the effect of facilitating the user to select the transmission rod. The existing quick release device, as shown in the new patent case of Taiwan Patent Publication No. 280239 "Loading and Unloading Device for Ring Cutting Tools", uses a rotatable torsion assembly and a three-point positioning steel ball to position the tool.

Although the structure of the above-mentioned quick release device can achieve the function of positioning the tool, since the cooperation between the transmission rod and the tool depends on the positioning of the three steel balls, the front and rear ends of the tool will still shake after positioning. The stability of positioning is poor.

Since the loading and unloading device of the above-mentioned existing annular cutting tool is positioned by three-point steel balls, it cannot effectively and stably locate the cutter therein, so that the cutter still shakes when in use.

Utility model content

In view of the above-mentioned problems, the utility model aims to further improve the positioning effect of the loading and unloading device, achieve the detachable tool with a large area of contact structure design, and at the same time have the effect of stably combining and positioning the tool, thereby solving the existing problem The problem of unstable positioning of the loading and unloading device.

In order to achieve the above purpose, the utility model provides a quick release device for drilling tools, which includes a transmission rod and a tool matching the transmission rod, wherein:

The transmission rod is provided with a pipe body, an insertion portion with a small outer diameter is formed at the front end of the pipe body, and a plurality of holes are arranged at equal intervals on the peripheral surface of the insertion portion, and each hole faces toward one side of the body body. The hole is relatively narrow, and a circular part and a cylindrical part are respectively formed at the front and rear positions, a ball is embedded in each circular part, a roller is embedded in each cylindrical part, and the insertion part is rotatable A torsion assembly is set in the shape set, and the torsion assembly corresponds to the circular part and the cylindrical part of each hole in the front and rear positions of the inner surface, and a ball notch and a roller notch are respectively recessed, and each ball notch and The notches of each roller cooperate to accommodate the balls and the outer sides of the rollers;

The tool forms a connecting rod at the rear end to match the insertion part, and a plurality of positioning grooves are recessed in the corresponding hole on the peripheral surface of the connecting rod. A circular positioning groove for engaging the balls and a cylindrical positioning groove for engaging the rollers.

Further, in the utility model, a ring-shaped sliding groove is recessed at the cylindrical part formed at the rear end of the peripheral surface of the insertion part. The rotatable form is sleeved on the sliding groove, the roller notches are formed on the inner surface of the interlocking ring, and a plurality of lower positioning pin holes are pierced on the front end of the interlocking ring;

A swivel is provided, and the inner peripheral surface of the rear end of the swivel cooperates with the interlocking ring to recess a receiving portion, the swivel is set around the insertion portion and the interlocking ring, and the accommodating portion Place the interlocking ring, form a plurality of upper positioning pin holes in front of the receiving part facing the lower positioning pin holes, and respectively set a positioning pin between the upper positioning pin holes and the matching lower positioning pin holes, With the interlocking swivel and the interlocking ring, the ball notches are formed on the front side of the inner peripheral surface of the swivel.

Furthermore, in the utility model, an arc-shaped positioning chute is recessed along the surrounding surface of the insertion part, and a positioning screw hole is formed on the swivel to cooperate with the positioning chute, and a positioning screw is screwed into the positioning screw hole. A stud, the inner end of the positioning stud extends into the positioning chute.

Preferably, the interlocking ring includes two semicircular side rings with adjacent ends, three lower positioning pin holes are provided on the interlocking ring, and three positioning pin holes are matched on the swivel ring.

Preferably, three holes are arranged at equal intervals in the insertion part, and the number of the ball notches, the roller notches and the positioning grooves are matched with three holes, and each ball notch is located at the same left and right sides. A slope is formed on the side, and each roller notch is arc-shaped.

When the utility model is used, the assembly is to be twisted so that the positions of the ball notches and the roller notches are aligned with the holes, so that the balls and rollers can be retracted outward from the insertion part. At this time, the tool can be Align the positioning groove of the positioning hole and insert the connecting rod into the insertion part, then turn the twisting assembly so that the balls and rollers are pressed by the inner peripheral surface of the twisting assembly and protrude into the insertion part, thereby, the inner sides of the balls and rollers are Embedded in the positioning groove of the tool to achieve the effect of positioning combination.

When the tool is combined with the transmission rod, the positioning groove along the front and rear direction is engaged by the ball and the roller. The combined area is large and the position where the combination of each group of balls and rollers contacts the positioning groove is along the axial direction of the tool, so it can be reliably locked. The tool is made to achieve an excellent positioning effect that is not easy to shake, so that the tool is positioned on the transmission rod with better stability.

Description of drawings

Fig. 1 is a perspective view of a preferred embodiment of the utility model.

Fig. 2 is an exploded view of a preferred embodiment of the utility model.

Fig. 3 is a vertical sectional view of a preferred embodiment of the present invention.

Fig. 4 is a vertical sectional view of a preferred embodiment of the present invention.

Fig. 5 is a horizontal section view of a preferred embodiment of the present invention.

Fig. 6 is a horizontal section view of a preferred embodiment of the present invention.

Fig. 7 is a horizontal cross-sectional view of a release tool in a preferred embodiment of the present invention.

Fig. 8 is a horizontal sectional view of a release tool in a preferred embodiment of the present invention.

Explanation of main component symbols

10 transmission rod 11 pipe body

12 plug-in part 121 hole

1211 circular part 1212 cylindrical part

122 sliding groove 13 ball

14 Roller 15 Positioning chute

16 Torsion component 17 Linkage ring

171 side ring 172 lower positioning pin hole

173 roller notch 18 swivel

181 Accommodating part 182 Upper positioning pin hole

183 positioning pin 184 ball notch

185 inclined plane 186 positioning screw hole

19 positioning studs 20 tools

21 Connecting rod 22 Positioning slot

221 circular positioning slot 222 cylindrical positioning slot

Detailed ways

The utility model provides a quick-release device for drilling tools, please refer to the preferred embodiments of Figures 1 to 6, which includes a transmission rod 10 and a tool 20 matching the transmission rod 10, wherein:

The transmission rod 10 is provided with a tube body 11, an insertion portion 12 with a smaller outer diameter is formed at the front end of the tube body 11, and three receiving holes 121 are perforated at equal intervals on the peripheral surface of the insertion portion 12, and each receiving hole 121 is The elongated holes extending in the front-rear direction are narrower towards the inner side of the tube body 11. Each of the receiving holes 121 forms a circular circular portion 1211 and a cylindrical cylindrical portion 1212 at the front and rear positions respectively, for inserting Each cylindrical portion 1212 is recessed to form a ring-shaped sliding groove 122 at the rear end of the peripheral surface of the portion 12. A ball 13 is embedded in each circular portion 1211, and a cylindrical ball 13 is embedded in each cylindrical portion 1212. The roller 14 is provided with an arc-shaped positioning chute 15 on the peripheral surface of the front side of the insertion part 12 along the periphery;

A torsion assembly 16 is set and positioned in a rotatable manner around the insertion part 12. The torsion assembly 16 is provided with a link ring 17. The link ring 17 is a ring body and includes two semicircles with ends close to each other. The side ring 171 of the interlocking ring 17 is sleeved in the sliding groove 122 in a rotatable form, and three lower positioning pin holes 172 are arranged at equal intervals on the part of the front end of the interlocking ring 17 exposed to the sliding groove 122. The interlocking ring 17 And cooperate with the outer side of the roller 14 to form three arc-shaped roller notches 173 on the inner surface;

A swivel 18 is sleeved around the insertion portion 12 and the interlocking ring 17. The swivel 18 is a torus and a receiving portion 181 is recessed on the inner peripheral surface of the rear end to cooperate with the interlocking ring 17. The accommodating portion 181 The interlocking ring 17 is accommodated, and three upper positioning pin holes 182 are respectively formed on the front of the accommodating part 181 facing the lower positioning pin holes 172, and three upper positioning pin holes 182 are respectively formed between the upper positioning pin holes 182 and the matched lower positioning pin holes 172. A locating pin 183 is passed through, whereby the locating pin 183 is used to link the swivel 18 and the interlocking ring 17 at the same time, and the front side of the inner peripheral surface of the swivel 18 cooperates with the outer side of the ball 13 to form three ball notches 184 on the inner surface , the ball notch 184 forms a slope 185 on the same side of the left and right;

A positioning screw hole 186 is formed on the swivel 18 in conjunction with the positioning chute 15, and a positioning stud 19 is screwed into the positioning screw hole 186. The inner end of the positioning stud 19 extends into the positioning chute 15, thereby restricting the rotation of the swivel ring. 18 rotates and positions the interlocking ring 17 on the outer periphery of the insertion part 12 .

The tool 20 forms a connecting rod 21 at the rear end to be inserted into the insertion part 12, and three positioning grooves 22 are recessed on the peripheral surface of the connecting rod 21 corresponding to the receiving hole 121, and each positioning groove 22 extends along the front and rear directions. and a circular positioning groove 221 and a cylindrical positioning groove 222 are formed at the front and rear positions to match the shapes of the ball 13 and the roller 14 respectively.

In the above-mentioned preferred embodiment, the inserting portion 12 is provided with three receiving holes 121 for embedding the balls 13 and the rollers 14 , and cooperates with the equal number of ball notches 184 and roller notches 173 provided on the torsion assembly 16 . In addition to the above-mentioned structural design, the utility model can also be provided with two or more than four receiving holes 121 on the insertion part 12, so as to cooperate with an equal number of balls 13, rollers 14, ball notches 184, and roller notches. Structural actions such as mouth 173, the present utility model does not limit at this on the variation of these numbers.

And the interlocking ring 17 of the present invention can be formed by two side rings 171, also can be formed by three, set with user's demand, and the present invention is not limited here either.

The utility model uses the torsion assembly 16 to drive the ball 13 and the roller 14 to fit into the positioning groove 22 of the tool 20 , thereby providing the user with the function of disassembling or combining the tool 20 with the transmission rod 10 at will.

Taking the aforementioned preferred embodiment as an example, when you want to combine the tool 20 with the transmission rod 10, please refer to Fig. 2 and Fig. 7, 8, it is to twist the swivel ring 18 to drive the interlocking ring 17 to rotate at the same time, so that the ball notch 184 And the position of the roller notch 173 aligns with the receiving hole 121, so that the ball 13 and the roller 14 can be retracted outwards. At this time, the connecting rod 21 can be inserted in the form of the positioning groove 22 aligning with the receiving hole 121. Section 12.

After the tool 20 is inserted and positioned, then the swivel ring 18 is rotated, please refer to Figures 5 and 6, so that the ball 13 is pressed by the inner peripheral surface of the swivel ring 18 along the inclined surface 185 to protrude into the insertion part 12, and the interlocking ring 17 is interlocked so that the roller 14 is pressed by the inner peripheral surface of the interlocking ring 17 to protrude into the insertion part 12 along the roller notch 173, whereby the inside of the ball 13 and the roller 14 are both embedded in the positioning of the tool 20. In the groove 22, a large area and an excellent clamping and positioning effect in the axial direction are achieved, so that the cutter 20 is not easy to shake when positioned on the transmission rod 10, and the stability of the cutter 20 is greatly increased.

If it is desired to insert and remove the cutter 20 from the transmission rod 10, it is only necessary to reversely operate the above-mentioned combined operation process, and details are not repeated here.

Claims (6)

1. the device for quickly disassembling of a drilling tool is characterized in that: comprising:

One drive link, this drive link is provided with a body, form the less portion that plugs of an external diameter in this body leading section, plug portion's side face in this and uniformly-spaced wear a plurality of appearances hole, it is narrower that each holds hole hole of a side in the body, and form a rounded portions and a cylindrical portion respectively in front and back position, be embedded a ball in each rounded portions, be embedded a roller in each cylindrical portion, around this portion of plugging, reverse assembly with the sheathed location one of rotatable form, this reverses the assembly correspondence and respectively holds the rounded portions in hole and cylindrical portion and cooperate respectively in the front and back position of inner face and be arranged with a ball recess and a roller recess, cooperates the outside of ccontaining ball and roller with each ball recess and each roller recess; And

One cutter, this cutter forms one and cooperates this to plug the connecting rod of portion in the rear end, be concaved with a plurality of locating slots in the corresponding hole that holds of this connecting rod side face, each locating slot front and back position cooperates the shape of ball and roller to form a circular locating slot and the cylindricality locating slot for the roller engaging for the ball engaging respectively.

2. the device for quickly disassembling of drilling tool as claimed in claim 1, it is characterized in that: form the cylindrical portion place and be arranged with and form a circular slip ditch in the described portion week surface rear end of plugging, the described assembly that reverses is provided with an interlock ring, this interlock ring is that torus and inboard are sheathed on this slip ditch with rotatable form, described each roller recess is formed at the inner face of this interlock ring, wears a plurality of dowel holes down in this interlock ring front end face;

Be provided with a change, the inner peripheral surface of this change in the rear end cooperates the interlock ring to be arranged with a holding part, this change be sheathed on this plug portion and this interlock ring around, and with ccontaining this interlock ring of this holding part, the front of facing each time dowel hole in this holding part forms a plurality of dowel holes of going up respectively, wear an alignment pin respectively between last dowel hole and the following dowel hole that cooperates, interlock change and interlock ring by this, described each ball recess is formed at the front side of this change inner peripheral surface.

3. the device for quickly disassembling of drilling tool as claimed in claim 2, it is characterized in that: the positioning runner that is arranged with an arc in the described side face edge that plugs portion on every side, cooperate this positioning runner to wear a location screw in this change, screw togather a location double-screw bolt in this positioning screw hole, stretch in this positioning runner the inner of this positioning stud.

4. as the device for quickly disassembling of claim 2 or 3 described drilling tools, it is characterized in that: described interlock ring comprises two semicircles and end and the side ring that leans on, and is equipped with three following dowel holes in this interlock, and cooperates in this change and to be provided with three dowel holes.

5. as the device for quickly disassembling of claim 1,2 or 3 described drilling tools, it is characterized in that: uniformly-spaced wear three in the described portion of plugging and hold the hole, described ball recess, described roller recess and described locating slot cooperate the appearance hole number to be provided with three, each ball recess in about the same side form an inclined-plane, each roller recess is an arc.

6. the device for quickly disassembling of drilling tool as claimed in claim 4, it is characterized in that: uniformly-spaced wear three in the described portion of plugging and hold the hole, described ball recess, described roller recess and described locating slot cooperate the appearance hole number to be provided with three, each ball recess in about the same side form an inclined-plane, each roller recess is an arc.

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