CN221247846U - Automatic drilling machine and universal fixture for same - Google Patents

Abstract

The utility model belongs to the technical field of clamps, and provides an automatic drilling machine and a universal clamp for the automatic drilling machine, wherein the universal clamp comprises a clamp body and a clamping assembly, the clamp body is provided with a placing groove, and the clamping assembly is used for clamping parts in the placing groove; the fixture body is provided with a first positioning component on the wall of the placing groove, and the first positioning component is used for adjusting the preset punching center of the part to be drilled to be aligned with the punching position of the drill bit of the drilling machine; the clamp body is provided with a second positioning assembly at one side far away from the clamping assembly, and the second positioning assembly is used for adjusting the preset punching center of the part to be drilled to be aligned with the punching position of the drill bit of the drilling machine; the first positioning component and the second positioning component are perpendicular to the adjusting direction of the part. Compared with the prior art, the utility model has the advantages that: the first positioning assembly and the second positioning assembly can be adjusted to meet the requirements of parts with different sizes rapidly, the universal line is strong, the switching efficiency is high, and the production efficiency is improved.

Description

Automatic drilling machine and universal fixture for same

Technical Field

The utility model belongs to the technical field of clamps, and particularly relates to an automatic drilling machine and a universal clamp for the automatic drilling machine.

Background

Drilling machines are a common part machining tool, in which the drill bit is usually rotated as a primary motion and the drill bit is axially moved as a feed motion. The drilling machine has simple structure and relatively low machining precision, can drill through holes and blind holes, replace special cutters, and can perform machining such as expanding, reaming or tapping. The workpiece is stationary during the machining process, the tool is moved, the center of the tool is aligned with the center of the hole, and the tool is rotated. The drilling machine is characterized in that the part to be machined is fixed, the drill bit moves, so that the drilling machine can be matched with a clamp in the machining and punching process, the clamp is used for clamping the part, and the part is ensured not to generate displacement in the machining process.

Parts of different sizes and models are processed on the same drilling machine and are fixed by changing different clamps, but the connecting mode of the clamps and the drilling machine is complex, the parts are generally fixed through a plurality of bolts, the replacing process of the clamps is complex, the effect of quick switching is not achieved, the replacing speed of the clamps is seriously affected, and the production efficiency is reduced.

Disclosure of utility model

The utility model aims to provide a universal fixture for an automatic drilling machine, which can quickly adapt to the requirements of parts with different sizes by adjusting a first positioning assembly and a second positioning assembly, has strong universality and high switching efficiency, and improves the production efficiency.

The technical scheme adopted for solving the technical problems is as follows: a universal fixture for an automatic drilling machine is proposed, comprising: the clamping device comprises a base, a clamp body and a clamping assembly, wherein the clamp body and the clamping assembly are installed on the base at intervals, a placing groove for placing a part to be drilled from top to bottom is formed in the top of the clamp body, and the clamping assembly is used for clamping the part in the placing groove; the fixture body is provided with a first positioning component on the groove wall of the placing groove, and the first positioning component is used for adjusting the preset punching center of the part to be drilled to be aligned with the punching position of the drill bit of the drilling machine; the clamp body is provided with a second positioning assembly at one side far away from the clamping assembly, and the second positioning assembly is used for adjusting a preset punching center of a part to be drilled to be aligned with a punching position opposite to a drill bit of the drilling machine; the first positioning component and the second positioning component are perpendicular to the adjusting direction of the part.

Through above-mentioned technical characteristics, place the part of taking drilling processing in the standing groove of anchor clamps body during the use, afterwards make part and the just right punching position of drill bit of drilling machine be located the punching center department of setting through adjusting first locating component and second locating component, utilize clamping component with the part press from both sides tightly can, when the part that needs to change different sizes to include different length, different width, loosen clamping component, place different part changes in the standing groove, through adjusting first locating component and second locating component for the just right punching position of drill bit of different parts and drilling machine all is located the punching center department of setting. Therefore, the universal fixture provided by the utility model can quickly adapt to the requirements of parts with different sizes by adjusting the first positioning assembly and the second positioning assembly, has strong universality and high switching efficiency, and improves the production efficiency.

The universal fixture for the automatic drilling machine comprises the fixture body, wherein the fixture body is provided with the first locating groove for installing the first insert on the groove wall on one side of the placing groove, the fixture body is provided with the second locating groove for embedding the wave bead screw assembly on the groove wall on the other side of the placing groove, and the first insert and the wave bead screw assembly are oppositely arranged to be abutted to two sides of a part to be drilled for locating.

Through above-mentioned technical characteristics, place the part in the standing groove during the use, later place first mold insert in first constant head tank, place ripples pearl screw subassembly in the second constant head tank, through the position of first mold insert and ripples pearl screw subassembly adjustment part in the standing groove, make the part just to the punching position of drill bit of drilling machine be located the center of punching of settlement. After parts with different width sizes are replaced, the first insert in the first positioning groove is replaced, and meanwhile, the wave bead screw assembly is adjusted, so that the position, right opposite to a drill bit of the drilling machine, of the part is located in a set drilling center.

In the above-mentioned universal fixture for automatic drilling machine, the first mold insert includes integrated first locating block and first insert, first locating block be equipped with the part one side butt of standing groove in first locating surface, first constant head tank follow the upper end of anchor clamps body is from top to bottom extended, first insert is pegged graft in the first constant head tank.

Through the technical characteristics, when the parts with different sizes are replaced in the placing groove, the first inserts with the first positioning blocks with different thicknesses are replaced, so that the thickness of the first inserts is matched with the size of the parts, and the first inserts are inserted in the first positioning grooves through the first insert blocks, so that the replacement of the first inserts is facilitated. And when the same part is required to be perforated at different positions in the same direction, the first inserts with the first positioning blocks with different thicknesses are replaced to position the part.

The universal fixture for the automatic drilling machine comprises a mounting block, wherein the mounting block is placed in the second positioning groove and is connected with the fixture body, at least one threaded through hole is formed in the mounting block, the threaded through hole is internally connected with a ball screw in a threaded mode, the ball screw comprises steel balls, and the steel balls are located in the positioning groove and are in butt joint with parts in the positioning groove.

Through the technical characteristics, the ball screw is enabled to move back and forth along the direction of the threaded through hole by rotating the ball screw, and the depth of the steel ball at one end of the ball screw inserted into the placing groove is changed, so that the ball screw is suitable for parts with different sizes in the placing groove.

The universal fixture for the automatic drilling machine comprises the second positioning assembly, wherein the fixture body is provided with the third positioning groove on the groove wall at one side far away from the clamping assembly, the second insert is detachably connected in the third positioning groove, one side, located in the placing groove, of the second insert is provided with the second positioning block, and the second positioning block is provided with a second positioning surface which is abutted to one side, away from the clamping assembly, of a part in the placing groove.

Through the technical characteristics, after the part is placed in the placing groove, the second insert is placed in the third positioning groove, and the second positioning surface of the second insert is abutted to one side of the part, so that the punching position of the part right opposite to the drill bit of the drilling machine is located at the set punching center. After the parts with different sizes are replaced, the second inserts in the third positioning grooves are replaced, so that the second inserts with the second positioning blocks with different thicknesses are matched with the parts with different length sizes, and the position, right opposite to the drill bit of the drilling machine, of the parts is ensured to be positioned in the set drilling center. And when the same part is required to be perforated at different positions in the same direction, the second inserts of the second positioning blocks with different thicknesses are replaced to position the part.

In the universal fixture for the automatic drilling machine, the second insert further comprises a second insert block, the third positioning groove extends from the upper end of the fixture body from top to bottom, and the second insert block is inserted into the third positioning groove.

Through the technical characteristics, the second inserts are inserted into the third positioning groove through the second insert blocks, so that the replacement of different second inserts is facilitated.

The universal fixture for the automatic drilling machine comprises the clamping cylinder and the cylinder cushion block, wherein the cylinder cushion block is connected to the base, the clamping cylinder comprises a cylinder main body, a telescopic rod and a clamping block, the cylinder main body is connected to the cylinder cushion block, the telescopic rod is arranged on the cylinder main body, the clamping block is connected to one end of the telescopic rod, and one side, close to the fixture body, of the clamping block is provided with a clamping surface which is abutted to one side of a part placed in the placing groove.

Through above-mentioned technical characteristics, the part is after the location is placed in the standing groove, drives the clamping piece through the telescopic link of clamping cylinder and supports tightly in one side of part, avoids the part to remove in drilling course of working.

In the universal fixture for the automatic drilling machine, the lower end of the placing groove is provided with the avoiding groove, and the avoiding groove is communicated with the placing groove.

Through above-mentioned technical characteristics, the part is placed in the standing groove after, dodges the below that the groove is located the part, when avoiding the part to need to get through the drilling from top to bottom, the drill bit touches the base after getting through, causes the damage to drill bit and base.

The universal fixture for the automatic drilling machine comprises the base, wherein the base comprises the connecting plate and the mounting plate, the connecting plate is connected with the lower ends of the fixture body and the clamping assembly, the mounting plate is used for being connected with the drilling machine, at least two first positioning holes are formed in the mounting plate, a guide sleeve is connected in the first positioning holes, at least two second positioning holes are formed in the connecting plate, a guide pillar is connected in the second positioning holes, and the lower ends of the guide pillars are inserted into the guide sleeve.

Through above-mentioned technical characteristics, when the anchor clamps body that needs different shape structure standing grooves is changed according to the shape of different parts to the needs, only need take off the anchor clamps body from the connecting plate can, need not take off anchor clamps from the drilling machine, convenient change. During installation, the mounting plate is connected to the drilling machine, the guide post of the connecting plate is inserted into the guide sleeve of the mounting plate, and then the connection between the mounting plate and the connecting plate and the connection between the clamp and the connecting plate are completed through the connecting piece. The guide sleeve and the guide post are arranged, so that the mounting plate and the connecting plate can be positioned accurately.

The utility model further provides an automatic drilling machine, which comprises the universal fixture, a rotary table, a driving piece, a drilling mechanism and a tapping mechanism, wherein the universal fixture is uniformly distributed on the rotary table along the circumferential direction at intervals, the driving piece is used for driving the rotary table to rotate, the drilling mechanism is used for drilling parts placed in the placing groove, and the tapping mechanism is used for tapping the parts drilled in the placing groove.

Through above-mentioned technical characteristics, connect universal fixturing along axial interval equipartition on the chassis through the base, later place the part in universal fixturing and press from both sides tightly, then the driving piece drives the carousel and rotate, when the part in the carousel drives universal fixturing is located drilling mechanism below, drilling mechanism carries out the operation of punching to the part, the part just right the position of punching with drilling mechanism just right this moment is right with the center of punching of setting, accomplish after punching, the driving piece drives the carousel and continuously rotates, when need tapping operation, tapping mechanism can beat the part and tap after the drilling, accomplish the operation.

In summary, the beneficial effects of the utility model are as follows:

(1) The first positioning component and the second positioning component can be adjusted to rapidly adapt to the requirements of parts with different sizes, so that the universality is strong, the switching efficiency is high, and the production efficiency is improved;

(2) The first insert and the second insert are inserted into the first positioning groove and the third positioning groove respectively through the first insert block and the second insert block, so that the replacement is convenient;

(3) The clamp body is connected with the mounting plate on the drilling machine through the connecting plate, so that the clamp bodies with different shapes and structures can be replaced conveniently, and the universality of the drilling machine is improved;

(4) The connecting plate and the mounting plate are positioned through the guide sleeve and the guide pillar, so that the connection between the connecting plate and the mounting plate is facilitated.

Drawings

FIG. 1 is a schematic view showing the overall structure of one embodiment of the present example 1;

Fig. 2 is a schematic structural view of a clamp body according to an embodiment of example 1;

FIG. 3 is a schematic view of a portion of a first positioning assembly according to an embodiment of example 1;

Fig. 4 is a schematic structural view of a first insert according to one embodiment of the present example 1;

fig. 5 is a schematic structural view of a mounting block according to an embodiment of the present example 1;

FIG. 6 is a schematic cross-sectional view of a ball screw assembly according to one embodiment of example 1;

fig. 7 is a schematic structural view of a second insert according to one embodiment of the present example 1;

FIG. 8 is a schematic view of the structure of the clamping assembly of one embodiment of this example 1;

Fig. 9 is a schematic diagram of a second structure of the clamp body according to an embodiment of the present example 1;

FIG. 10 is a schematic view of an exploded construction of the base assembly of one embodiment of the present example 1;

fig. 11 is a schematic overall structure of one embodiment of the present example 2.

In the figure, 1, a base; 11. a connecting plate; 111. a second positioning hole; 112. a guide post; 12. a mounting plate; 121. a first positioning hole; 122. guide sleeve; 2. a clamp body; 21. a placement groove; 22. a first positioning assembly; 221. a first insert; 2211. a first positioning block; 2212. a first plug; 22121. a first plug block; 22122. a second plug block; 22123. a groove; 2213. a first positioning surface; 222. a wave bead screw assembly; 2221. a mounting block; 2222. a threaded through hole; 2223. a wave bead screw; 22231. a screw body; 22232. a spring groove; 22233. a screw hole; 22234. a spring; 2224. steel balls; 223. a first positioning groove; 2231. a first slot; 2232. a second slot; 2233. a bump; 224. a second positioning groove; 23. a second positioning assembly; 231. a third positioning groove; 232. a second insert; 2321. a second positioning block; 2322. a second insert block; 2323. a second positioning surface; 24. an avoidance groove; 3. a clamping assembly; 31. a clamping cylinder; 311. a cylinder main body; 312. a telescopic rod; 313. a clamping block; 314. a clamping surface; 32. a cylinder cushion block; 4. a turntable; 5. a driving member; 6. a drilling mechanism; 7. and a tapping mechanism.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Example 1:

As shown in fig. 1, the present embodiment discloses a universal fixture for an automatic drilling machine, which comprises a base 1, a fixture body 2 and a clamping assembly 3, wherein the clamping assembly 3 is positioned in front of the fixture body 2, and the fixture body 2 and the clamping assembly 3 are installed on the base 1 at intervals.

As shown in fig. 1, a placing groove 21 for placing a part to be drilled from top to bottom is formed in the top of the fixture body 2, the placing groove 21 extends forward to penetrate through the fixture body 2, a first positioning component 22 is arranged on the fixture body 2 in the left-right direction of the placing groove 21, a second positioning component 23 is arranged on the rear side of the fixture body 2 in the placing groove 21, the first positioning component 22 is used for adjusting the position, right opposite to a drill bit, of a preset drilling center of the part to be drilled in the left-right direction, and the second positioning component 23 is used for adjusting the position, right opposite to the drill bit, of the preset drilling center of the part to be drilled in the length direction.

As shown in fig. 2 and 3, the first positioning component 22 includes a first insert 221 and a bead screw component 222, the groove walls of the left and right sides of the holding groove 21 are respectively provided with a second positioning groove 224 and a first positioning groove 223, the first positioning groove 223 extends from top to bottom from the upper end of the holding groove 2, the second positioning groove 224 extends in the left and right direction to penetrate through one side of the holding groove 2 away from the first positioning groove 223, the first insert 221 is detachably connected in the first positioning groove 223, the bead screw component 222 is connected in the second positioning groove 224, and the first insert 221 and the bead screw component 222 are respectively abutted against the left and right sides of the part in the holding groove 21.

As shown in fig. 4, the first insert 221 includes a first positioning block 2211 and a first insert block 2212 that are integrally connected, the first insert block 2212 is inserted into the first positioning groove 223, the first positioning block 2211 is located in the placing groove 21, a first positioning surface 2213 is disposed on a side, far from the first positioning groove 223, of the first positioning block 2211, and the first positioning surface 2213 abuts against the right side of a part in the placing groove 21.

As shown in fig. 2 and 4, the first positioning groove 223 includes a first slot 2231 and a second slot 2232 which are communicated, the second slot 2232 is communicated with the placing groove 21, a length of the first slot 2231 is smaller than that of the second slot 2232, a bump 2233 is formed between the first slot 2231 and the second slot 2232, the first insert 2212 includes an insert first 22121 and an insert second 22122, the insert first 22121 is connected with the insert second 22122, the insert second 22122 is connected with the first positioning block 2211, a groove 22123 is arranged between the insert first 22121 and the insert second 22122, the insert first 22121 is inserted into the first slot 2231, the insert second 22122 is inserted into the second slot 2232, and the groove 22123 is matched with the bump 2233, so that the first insert 221 can be stably inserted into the first positioning groove 223.

As shown in fig. 5 and 6, the wave bead screw assembly 222 includes a mounting block 2221, the mounting block 2221 is placed in the second positioning groove 224 and is connected with the fixture body 2, two threaded through holes 2222 penetrating in the left-right direction are formed in the mounting block 2221, the wave bead screw 2223 is connected with each threaded through hole 2222 in a threaded manner, one end of the wave bead screw 2223 is connected with a steel ball 2224, and the steel ball 2224 extends into the positioning groove 21 to be in butt joint with a part.

As shown in fig. 6, the bead screw 2223 includes a screw body 22231, the screw body 22231 is screwed in the threaded through hole 2222, a spring groove 22232 is provided on one side of the screw body 22231 close to the mounting groove, a screw hole 22233 is provided on one end of the screw body 22231 far away from the placement groove 21, a spring 22234 is provided in the spring groove 22232, and one end of the spring 22234 is connected with the steel ball 2224.

As shown in fig. 1 and 2, a third positioning groove 231 extending downwards from the upper end of the clamp body 2 is formed in the groove wall of the rear side of the placement groove 21 of the clamp body 2, and a second positioning assembly 23 is inserted into the third positioning groove 231.

As shown in fig. 7, the second positioning assembly 23 includes a second insert 232, the second insert 232 includes a second positioning block 2321 and a second insert 2322 that are integrally connected, the second insert 2322 is inserted into the third positioning slot 231, the second positioning block 2321 is located in the placement slot 21, and a second positioning surface 2323 that is abutted against the rear side of the part in the placement slot 21 is provided on the second positioning block 2321.

As shown in fig. 8, the clamping assembly 3 comprises a clamping cylinder 31 and a cylinder block 32, the cylinder block 32 is connected to the base 1, the clamping cylinder 31 comprises a cylinder body 311, a telescopic rod 312 and a clamping block 313, the cylinder body 311 is connected to the cylinder block 32, the telescopic rod 312 is arranged on the cylinder body 311, the clamping block 313 is connected to one end of the telescopic rod 312, and a clamping surface 314 which is abutted to the front end of a part placed in the placing groove 21 is arranged on one side, close to the clamp body 2, of the clamping block 313.

As shown in fig. 9, the lower end of the placement groove 21 is provided with a relief groove 24, and the relief groove 24 communicates with the placement groove 21.

As shown in fig. 10, the base 1 assembly comprises a connecting plate 11 and a mounting plate 12, wherein the connecting plate 11 is connected to the lower ends of the clamp body 2 and the clamp assembly 3, the mounting plate 12 is used for drilling machine connection, two first positioning holes 121 are formed in the mounting plate 12, two second positioning holes 111 are formed in the connecting plate 11, a guide sleeve 122 is arranged in the first positioning holes 121, a guide pillar 112 is arranged in the second positioning holes 111, and the lower ends of the guide pillars 112 are inserted into the guide sleeve 122.

Working principle: when the drilling fixture is used, a part to be drilled is placed in the placing groove 21 of the fixture body 2, then according to different parts, the first insert 221 with the first positioning block 2211 with a proper thickness and the second insert 232 with the second positioning block 2321 with a proper thickness are selected, the first insert 221 is inserted into the first positioning groove 223 through the first insert 2212, the first positioning surface 2213 of the first positioning block 2211 is abutted against the right side of the part, the second insert 232 is inserted into the third positioning groove 231 through the second insert 2322, the second positioning surface 2323 of the second positioning block 2321 is abutted against the rear side of the part, then the screw body 22231 is rotated through the screw hole 22233, the rigid bead is abutted against the left side of the part, at the moment, the position where the part is right opposite to a drill bit of the drilling machine is located exactly at the set drilling center, then the clamping surface 314 on the clamping block 313 is abutted against the rear end of the part through the clamping cylinder 31 of the clamping assembly 3, and shaking during drilling is avoided.

Example 2:

As shown in fig. 11, this embodiment 2 discloses an automatic drilling machine, including carousel 4, driving piece 5, drilling mechanism 6 and tapping mechanism 7, the universal fixturing of embodiment 1 has been equipartition along circumference interval on the carousel 4, and universal fixturing's mounting panel 12 is connected with carousel 4, and driving piece 5 is used for driving carousel 4 rotation, and drilling mechanism 6 is used for drilling the part of placing in standing groove 21, and tapping mechanism 7 is used for carrying out the tapping to the part after drilling in the standing groove 21.

The specific embodiments described herein are offered by way of example only. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the scope of the utility model as defined.

Claims (10)

1. The universal fixture for the automatic drilling machine is characterized by comprising a base (1), a fixture body (2) and a clamping assembly (3), wherein the fixture body (2) and the clamping assembly (3) are installed on the base (1) at intervals, a placing groove (21) for placing a part to be drilled from top to bottom is formed in the top of the fixture body (2), and the clamping assembly (3) is used for clamping the part in the placing groove (21); the fixture body (2) is provided with a first positioning component (22) on the groove wall of the placing groove (21), and the first positioning component (22) is used for adjusting the preset punching center of the part to be drilled to be aligned with the punching position of the drill bit of the drilling machine; the clamp comprises a clamp body (2), a clamping assembly (3) and a second positioning assembly (23) are arranged on one side, far away from the clamping assembly (3), of the clamp body, and the second positioning assembly (23) is used for adjusting a preset punching center of a part to be drilled to be aligned with a punching position, opposite to a drill bit of a drilling machine, of the part to be drilled; the first positioning component (22) is perpendicular to the adjusting direction of the second positioning component (23) on the part.

2. The universal fixture for an automatic drilling machine according to claim 1, wherein the first positioning assembly (22) comprises a first insert (221) and a ball screw assembly (222), a first positioning groove (223) for installing the first insert (221) is formed in a groove wall on one side of the placing groove (21) by the fixture body (2), a second positioning groove (224) for embedding the ball screw assembly (222) is formed in a groove wall on the other side of the placing groove (21) by the fixture body (2), and the first insert (221) and the ball screw assembly (222) are oppositely arranged to be abutted to two sides of a part to be drilled for positioning.

3. The universal fixture for an automatic drilling machine according to claim 2, wherein the first insert (221) comprises a first positioning block (2211) and a first insert block (2212) which are integrally connected, the first positioning block (2211) is provided with a first positioning surface (2213) which is abutted against one side of a part in the placing groove (21), a first positioning groove (223) extends from top to bottom from the upper end of the fixture body (2), and the first insert block (2212) is inserted into the first positioning groove (223).

4. The universal fixture for an automatic drilling machine according to claim 2, wherein the ball screw assembly (222) comprises a mounting block (2221), the mounting block (2221) is placed in the second positioning groove (224) and is connected with the fixture body (2), at least one threaded through hole (2222) is formed in the mounting block (2221), a ball screw (2223) is connected in the threaded through hole (2222) in a threaded manner, the ball screw (2223) comprises a steel ball (2224), and the steel ball (2224) is located in the placing groove (21) and is abutted against a part in the placing groove (21).

5. Universal fixture for automatic drilling machines according to claim 1, characterized in that the second positioning assembly (23) comprises a second insert (232), the fixture body (2) is provided with a third positioning groove (231) on the groove wall at the side far away from the clamping assembly (3), the second insert (232) is detachably connected in the third positioning groove (231), one side of the second insert (232) located in the placing groove (21) is provided with a second positioning block (2321), and the second positioning block (2321) is provided with a second positioning surface (2323) abutting against one side of the part in the placing groove (21) far away from the clamping assembly (3).

6. The universal fixture for automatic drilling machines according to claim 5, characterized in that the second insert (232) further comprises a second insert (2322), a third positioning groove (231) extending from the upper end of the fixture body (2) from top to bottom, the second insert (2322) being inserted into the third positioning groove (231).

7. Universal fixture for automatic drilling machines according to claim 1, characterized in that the clamping assembly (3) comprises a clamping cylinder (31) and a cylinder block (32), the cylinder block (32) is connected to the base (1), the clamping cylinder (31) comprises a cylinder body (311), a telescopic rod (312) and a clamping block (313), the cylinder body (311) is connected to the cylinder block (32), the telescopic rod (312) is arranged on the cylinder body (311), the clamping block (313) is connected to one end of the telescopic rod (312), and a clamping surface (314) which is abutted to one side of a part placed in the placing groove (21) is arranged on one side of the clamping block (313) close to the fixture body (2).

8. Universal fixture for automatic drilling machines according to claim 1, characterized in that the lower end of the placement groove (21) is provided with a relief groove (24), the relief groove (24) being in communication with the placement groove (21).

9. Universal fixture for automatic drilling machines according to claim 1, characterized in that the base (1) comprises a connecting plate (11) and a mounting plate (12), the connecting plate (11) is connected to the lower ends of the fixture body (2) and the clamping assembly (3), the mounting plate (12) is used for drilling machine connection, at least two first positioning holes (121) are arranged on the mounting plate (12), a guide sleeve (122) is connected in the first positioning holes (121), at least two second positioning holes (111) are arranged on the connecting plate (11), a guide pillar (112) is connected in the second positioning holes (111), and the lower ends of the guide pillars (112) are inserted in the guide sleeve (122).

10. The automatic drilling machine is characterized by comprising a plurality of universal clamps according to any one of claims 1-9, further comprising a rotary table (4), driving pieces (5), a drilling mechanism (6) and a tapping mechanism (7), wherein the universal clamps are uniformly distributed on the rotary table (4) along the circumferential direction at intervals, the driving pieces (5) are used for driving the rotary table (4) to rotate, the drilling mechanism (6) is used for drilling parts placed in the placing groove (21), and the tapping mechanism (7) is used for tapping the parts drilled in the placing groove (21).