CN112743299A

CN112743299A - Multi-station machining method and equipment for intensive holes of rectangular rack

Info

Publication number: CN112743299A
Application number: CN202011603298.7A
Authority: CN
Inventors: 聂俊; 聂荣辉
Original assignee: Miluo Xingtian Machinery Co ltd
Current assignee: Miluo Xingtian Machinery Co ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-04
Anticipated expiration: 2040-12-30
Also published as: CN112743299B

Abstract

The invention discloses a multi-station machining method for dense holes of a rectangular rack, which comprises the following steps of: s1, spot hole: point drilling all base holes with small diameters; s2, first reaming: expanding and drilling base holes on non-adjacent hole sites to form bottom holes; s3, second reaming: expanding and drilling other bottom holes on the unprocessed residual hole positions in the S2; s4, chamfering the hole: chamfering the orifices of all the bottom holes; s5, tapping the first group of holes: tapping the bottom holes on the non-adjacent hole sites; s6, tapping the threaded hole by a second group: the pilot holes on the remaining hole sites left untreated in S5 were tapped. The invention also discloses a processing device for the processing method, and aims to quickly position and clamp the rectangular frame type frame, and then carry out step-by-step drilling processing on the vertical faces at the corners of the rectangular frame, so that the working strength is reduced, and the processing efficiency is improved.

Description

Multi-station machining method and equipment for intensive holes of rectangular rack

Technical Field

The invention relates to the technical field of milling clamps, in particular to a multi-station machining method and equipment for dense holes of a rectangular rack.

Background

The existing machine frame for a certain machine needs to be processed, the outline of the existing machine frame is a rectangular frame type structure, double-row threaded hole processing needs to be carried out on one side plate, the existing drilling equipment in the related technology can only carry out single-hole-position processing, and on one hand, due to the fact that the existing drilling equipment is heavy, the existing drilling equipment is not easy to adjust during operation; on the other hand, the efficiency is low, so that a special drilling method or equipment is needed to be designed for drilling of the product for easy operation, reduced working strength, improved production efficiency, mass flow line production and processing and the like.

Disclosure of Invention

In view of the above, the present invention provides a method and an apparatus for multi-station machining of dense holes of a rectangular frame, so that a rectangular frame type frame can be quickly positioned and clamped, and then stepped drilling machining is performed on vertical faces of corners of the rectangular frame, thereby reducing working strength and improving machining efficiency.

In order to achieve the aim, the invention provides a multi-station machining method for dense holes of a rectangular rack, which comprises the following steps of:

s1, spot hole: point drilling all base holes with small diameters;

s2, first reaming: expanding and drilling base holes on non-adjacent hole sites to form bottom holes;

s3, second reaming: expanding and drilling other bottom holes on the unprocessed residual hole positions in the S2;

s4, chamfering the hole: chamfering the orifices of all the bottom holes;

s5, tapping the first group of holes: tapping the bottom holes on the non-adjacent hole sites;

s6, tapping the threaded hole by a second group: the pilot holes on the remaining hole sites left untreated in S5 were tapped.

Further, in the tapping process in steps S5 and S6, the tapping is performed alternately until the completion of the threading process, with each normal rotation of the tapping exceeding 120 ° and each reverse rotation of 60 ° to 75 °.

The invention also provides a processing device for the multi-station processing method of the intensive holes of the rectangular rack, which comprises the following steps:

the workbench is horizontally provided with the rectangular rack and transversely reciprocates;

a positioning mechanism comprising at least: the positioning device comprises a first positioning block, a second positioning block, a third positioning block and a fourth positioning block, wherein the first positioning block is fixedly arranged on the workbench and abuts against the inner side of a first short edge of the rectangular rack; the third positioning block and the fourth positioning block are driven by an ejection mechanism;

clamping mechanism sets up in the rectangle frame and is close to each limit intersection inboard, includes: the device comprises a pressure plate and a telescopic cylinder, wherein one end of the telescopic cylinder is connected to a workbench, and the other end of the telescopic cylinder is connected to the pressure plate; one end of the pressing plate is hinged to the workbench in a rotating mode around the horizontal shaft, and the other end of the pressing plate is pressed to the upper end of the rectangular rack when retracting through the telescopic cylinder; and arranged in series along the direction of movement of the table

The point hole machining station comprises a first body which is movably arranged along the drilling feeding direction, and a plurality of point hole drill bits which are aligned with the holes are arranged on the first body;

the first hole expanding machining station comprises a second body which is movably arranged along the drilling feeding direction, and a first group of hole expanding drill bits which are aligned with the non-adjacent holes are arranged on the second body;

the second hole expanding machining station comprises a third body which is movably arranged along the drilling feeding direction, and a second group of hole expanding drill bits which are aligned with the residual holes are arranged on the third body;

the orifice chamfering machining station comprises a fourth body which is movably arranged along the drilling feeding direction, and a plurality of orifice chamfering drill bits which are aligned with the holes are arranged on the fourth body;

the first tapping machining station comprises a fifth body which is movably arranged along the drilling feeding direction, and a first group of tapping drill bits aligned with the non-adjacent holes are arranged on the fifth body;

and the second tapping machining position comprises a sixth body which is movably arranged along the drilling feeding direction, and a second group of tapping drill bits aligned with the residual holes are arranged on the sixth body.

Further, the ejection mechanism includes: the telescopic rod is hinged to one end of the third connecting rod and one end of the fourth connecting rod, the other end of the third connecting rod is hinged to the third positioning block, and correspondingly, the other end of the fourth connecting rod is hinged to the fourth positioning block.

Furthermore, a guide inclined plane which is close to the rectangular edge from top to bottom is arranged on one side, close to the rectangular edge, of each positioning block.

Further, the first positioning block is arranged at the middle point on the inner side of the first short side close to the rectangular rack, the second positioning block A and the second positioning block B are respectively arranged at the two ends on the inner side of the second long side close to the rectangular rack, the third positioning block is arranged at the middle point on the inner side of the third short side close to the rectangular rack, and the fourth positioning block is arranged at the middle point on the inner side of the fourth long side close to the rectangular rack.

Further, the body transversely slides and is arranged on a first guide rail of the machine tool, and reciprocating movement is achieved through the first screw rod transmission assembly.

Furthermore, the workbench is transversely arranged on a second guide rail of the machine tool in a sliding mode and can realize reciprocating movement through a second lead screw transmission assembly, and the second guide rail is perpendicular to the length extending direction of the first guide rail.

Furthermore, the drill bits are installed at the end parts of the transmission rods, the transmission rods are transmitted through gears, and the rotation directions of the drill bits on the stations are the same.

Compared with the prior art, the invention has the beneficial effects that: the rectangular frame type frame can be quickly positioned and clamped, and then stepped drilling processing is carried out on the vertical faces at the corners of the rectangular frame, so that the working strength is reduced, and the processing efficiency is improved.

1. When the telescopic rod is pushed outwards, the third connecting rod and the fourth connecting rod are pushed to further push the third positioning block and the fourth positioning block to expand outwards to move to tightly push the rectangular rack, so that the pushing is realized, and the pushing force and the position are better in self-adaptive adjustment when the telescopic rod is pushed relative to a single cylinder.

2. According to the invention, the tapping processing is alternately carried out through positive and negative rotation, so that the drill cuttings can be squeezed off, the formation of longer continuous drill cuttings is avoided, and the chip removal is facilitated.

Drawings

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

FIG. 1 is a schematic front view of an embodiment of the present invention;

FIG. 2 is a schematic top view of the structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic front view of the positioning and clamping device of FIG. 1;

FIG. 4 is a front view of the drilling apparatus of FIG. 1;

FIG. 5 is a schematic top view of the structure of FIG. 4 according to the present invention.

In the figure: 11. a positioning mechanism; 111. a first positioning block; 112a and a second positioning block A; 112B and a second positioning block B; 113. a third positioning block; 114. a fourth positioning block; 115. a guide slope; 12. a clamping mechanism; 121. pressing a plate; 122. a telescopic cylinder; 13. a third link; 14. a fourth link; 15. a telescopic rod; 21. a hole punching machining station; 211. a point hole drill bit; 22. a first reaming processing station; 221. a first set of reamer bits; 23. a second reaming processing station; 231. a second set of reamer bits; 24. an orifice chamfering machining station; 241. an orifice chamfering bit; 25. a first tapping machining station; 251. a first set of tap bits; 26. a second tapping machining station; 261. a second set of tap bits; 27. a first guide rail; 28. a first lead screw transmission assembly; 29. a second guide rail; 30. and the second screw rod transmission assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The secondary processing threaded holes are two transverse rows of holes, the hole spacing is 60-90 mm, 5 holes are arranged in the first row, and 4 holes are arranged in the second row; and the upper and lower hole sites are aligned and the right is aligned.

Referring to fig. 1 to 5, an embodiment of the present invention provides a multi-station processing method and apparatus for dense holes of a rectangular frame, including the following steps:

s1, spot hole: drilling all base holes with small diameters of 5-10 mm through one-time machining points; the base hole plays a role in guiding and positioning for the follow-up;

s2, first reaming: expanding and drilling base holes on non-adjacent hole sites to form bottom holes; one, three and five holes in the first row and one, three holes in the second row can be punched out first

S3, second reaming: expanding and drilling other bottom holes on the unprocessed residual hole positions in the S2; the aperture of the bottom hole punched twice is about 27 mm;

s4, chamfering the hole: chamfering the orifices of all the bottom holes by one-time processing;

s5, tapping the first group of holes: tapping the bottom holes on the non-adjacent hole sites; namely, one, three and five holes in the first row and one and three holes in the second row can be punched firstly;

The drilling force is relatively small, all holes can be machined at one time, when the hole is expanded and a threaded hole is tapped, the drilling force is relatively large, drilling is conducted step by step, namely, a large distance is reserved between hole positions in the machining process, on one hand, when intensive hole positions are machined, extrusion deformation of workpieces on the machining positions is reduced, machining precision of products is guaranteed, on the other hand, due to the fact that two adjacent drill bit transmission rods are connected through gear set transmission, requirements for the gear sets or deformation can be reduced due to the fact that the distance is increased.

Further, in the tapping process in steps S5 and S6, the tapping is performed alternately until the completion of the threading process, with each normal rotation of the tapping exceeding 120 ° and each reverse rotation of 60 ° to 75 °. The tapping processing is carried out through the positive and negative rotation in turn, so that the drill cuttings (threads) can be squeezed off, the formation of longer continuous drill cuttings is avoided, and the chip removal is facilitated.

the workbench is used for horizontally placing the rectangular rack and is arranged in a transverse reciprocating manner; the rectangular frame comprises a first short-side frame, a third short-side frame, a second long-side frame and a fourth long-side frame, wherein as shown by a dotted line part in the figure, threaded holes in vertical surfaces of four corners need to be machined for machining, the threaded holes comprise two groups of holes in a transverse row and two groups of holes in a vertical row, the two groups of holes in the transverse row are 5 in the first row, and the two groups of holes in the second row are 4 in the second row; the two groups of vertical holes are 5 first vertical holes and 4 second vertical holes;

the positioning mechanism 11 includes at least: a first positioning block 111 which is fixedly arranged on the workbench and tightly abuts against the inner side of the first short side of the rectangular rack, a second positioning block A112a and a second positioning block B112B which are fixedly arranged on the workbench and tightly abut against the inner side of the second long side of the rectangular rack at intervals, a third positioning block 113 which is arranged on the workbench and moves from inside to outside along the direction of the long side of the rectangle and is used for tightly abutting against the inner side of the third short side of the rectangular rack, and a fourth positioning block 114 which is arranged on the workbench and moves from inside to outside along the direction of the short side of the rectangle and is used for tightly abutting against the inner side; the third positioning block 113 and the fourth positioning block 114 are driven by an ejection mechanism; the positioning block is provided with a long slotted hole along the direction vertical to the vertical surface of each side of the rectangle, so that the positioning block can be conveniently adjusted correspondingly when being installed through a bolt;

clamping mechanism 12, set up in the rectangle frame and be close to each limit intersection inboard, include: the device comprises a pressure plate 121 and a telescopic cylinder 122, wherein one end of the telescopic cylinder 122 is connected to a workbench, and the other end of the telescopic cylinder is connected to the pressure plate 121; one end of the pressure plate 121 is hinged to the workbench in a rotating mode around a horizontal shaft, and the other end of the pressure plate is pressed to the upper end of the rectangular rack when retracting through the telescopic cylinder 122;

and arranged at both sides in sequence along the moving direction of the workbench

The spot hole machining station 21 comprises a first body which is movably arranged along the drilling feeding direction, and a plurality of spot hole drill bits 211 aligned with the holes are arranged on the first body;

the first hole expanding processing station 22 comprises a second body which is movably arranged along the drilling feeding direction, and a first group of hole expanding drill bits 221 which are aligned with non-adjacent holes are arranged on the second body;

the second hole expanding processing station 23 comprises a third body which is movably arranged along the drilling feeding direction, and a second group of hole expanding drill bits 231 which are aligned with the residual holes are arranged on the third body;

the orifice chamfering machining station 24 comprises a fourth body which is movably arranged along the drilling feeding direction, and a plurality of orifice chamfering drill bits 241 aligned with the holes are arranged on the fourth body;

a first tapping machining station 25 comprising a fifth body arranged to move in the drilling feed direction, the fifth body having a first set of tapping bits 251 aligned with non-adjacent holes;

the second tapping machining station 26 includes a sixth body movably disposed along the drilling feeding direction, and a second tapping drill 261 aligned with the remaining hole is disposed on the sixth body.

Specifically, the rectangular frame is lifted above the workbench through a lifting device, is placed downwards to a processing station, moves leftwards in the figure through a fourth positioning block 114, realizes positioning of five degrees of freedom under the combined action of the fourth positioning block, a second positioning block A112a, a second positioning block B112B and the workbench, and moves and is tightly jacked through a third positioning block 113 to realize positioning of a sixth degree of freedom; secondly, when the telescopic cylinder 122 retracts, the upper end of the rectangular frame is pressed tightly through the pressing plate 121, the rectangular frame type frame can be quickly positioned and clamped by the positioning and clamping device, then the workbench moves in sequence to pass through the point hole machining position 21, the first reaming machining position 22, the second reaming machining position 23, the orifice chamfering machining position 24, the first tapping machining position 25 and the second tapping machining position 26, corresponding multi-station machining is carried out, step-by-step drilling machining can be carried out on opposite surfaces understandably, the working strength is reduced, the production and the machining of a production line are facilitated, and the machining efficiency is improved. As shown in fig. 1, the combination drill at the plurality of hole machining positions may be provided in two sets, one set for machining the horizontal rows of holes and the other set for machining the vertical rows of holes.

In this embodiment, preferably, the ejection mechanism includes: the third connecting rod 13, the fourth connecting rod 14 and the telescopic rod 15, which may be hydraulic cylinders, one end of the telescopic rod 15 is connected to the workbench, the other end of the telescopic rod is hinged to one end of the third connecting rod 13 and one end of the fourth connecting rod 14, the other end of the third connecting rod 13 is hinged to the third positioning block 113, and correspondingly, the other end of the fourth connecting rod 14 is hinged to the fourth positioning block 114. When the telescopic rod 15 is pushed outwards, the third connecting rod 13 and the fourth connecting rod 14 are pushed to further push the third positioning block 113 and the fourth positioning block 114 to expand outwards to move and tightly push the rectangular rack, so that the pushing is realized, and the pushing force and the position are better in self-adaptive adjustment when the telescopic rod is pushed relative to a single cylinder.

In this embodiment, preferably, a guide inclined plane 115 is disposed on one side of each positioning block, which is close to the rectangular edge, from top to bottom. The guide slope 115 serves as a guide when the rectangular frame is placed downward.

In this embodiment, preferably, the first positioning block 111 is disposed near the middle point of the inner side of the first short side of the rectangular frame, the second positioning block a112a and the second positioning block B112B are disposed near the two ends of the inner side of the second long side of the rectangular frame, respectively, the third positioning block 113 is disposed near the middle point of the inner side of the third short side of the rectangular frame, and the fourth positioning block 114 is disposed near the middle point of the inner side of the fourth long side of the rectangular frame. The stress is more balanced.

In this embodiment, preferably, the bodies are transversely slidably disposed on a first guide rail 27 of the machine tool, and are reciprocated by a first lead screw transmission assembly 28, that is, the bottom of each body is provided with the first guide rail 27 and the first lead screw transmission assembly 28 along a direction perpendicular to the forward movement direction of the worktable, wherein the lead screw transmission assembly may include a lead screw and a lead screw nut which are matched with each other, the lead screw is disposed on each body, the lead screw is rotatably mounted on the machine tool around a horizontal shaft, and the end of the lead screw is driven by a stepping motor, so as to implement the feeding and drilling of each body.

In this embodiment, the worktable is preferably arranged on a second guide rail 29 of the machine tool in a transverse sliding manner and is reciprocated through a second lead screw transmission assembly 30, and the second guide rail 29 is perpendicular to the length extension direction of the first guide rail 27. The screw rod transmission assembly can comprise a screw rod and a screw rod nut which are matched, the screw rod nut is arranged on the workbench, the screw rod is rotatably erected on the machine tool around a horizontal shaft and is consistent with the feeding direction, and the end part of the screw rod is driven by a stepping motor, so that the workbench can feed materials to each drilling machining position.

In this embodiment, preferably, the drill bits are installed at the ends of the transmission rods, the transmission rods are driven by gears, and the rotation directions of the drill bits at the stations are the same. The transmission rods are rotatably arranged on the bodies, the end part of at least one transmission rod is in transmission connection with a rotary drive, the transmission rods can be motors and are arranged conventionally, the transmission rods are not shown in the figure, the rod parts of the transmission rods can be coaxially provided with gears, an intermediate gear can be arranged between every two adjacent transmission rods, namely, the two adjacent transmission rods can be ensured to be transmitted through the intermediate gear, and the transmission rods enable the rotation direction and the rotation speed of each drill bit to be consistent, so that the structure is compact, the transmission efficiency is high, and the drill bit is.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

Claims

1. A multi-station machining method for dense holes of a rectangular rack is characterized by comprising the following steps:

s1, spot hole: point drilling all base holes with small diameters;

s4, chamfering the hole: chamfering the orifices of all the bottom holes;

2. The multi-station machining method for the dense holes of the rectangular rack as claimed in claim 1, wherein during the tapping process in steps S5 and S6, each time the tapping is performed by rotating the tapping forward more than 120 ° and then rotating the tapping backward 60 ° to 75 ° alternately until the threading process is completed.

3. The machining equipment of the multi-station machining method for the dense holes of the rectangular rack as claimed in claim 1 or 2, wherein the machining equipment comprises:

positioning mechanism (11) comprising at least: the positioning device comprises a first positioning block (111) which is fixedly arranged on the workbench and tightly abuts against the inner side of a first short side of the rectangular rack, a second positioning block A (112a) and a second positioning block B (112B) which are fixedly arranged on the workbench at intervals and tightly abut against the inner side of a second long side of the rectangular rack, a third positioning block (113) which is arranged on the workbench and moved from inside to outside along the direction of the long side of the rectangle and used for tightly abutting against the inner side of a third short side of the rectangular rack, and a fourth positioning block (114) which is arranged on the workbench and moved from inside to outside along the direction of the short side of the rectangle and used; the third positioning block (113) and the fourth positioning block (114) are driven by an ejection mechanism;

clamping mechanism (12), set up in that the rectangle frame is close to each limit intersection inboard, include: the device comprises a pressure plate (121) and a telescopic cylinder (122), wherein one end of the telescopic cylinder (122) is connected to a workbench, and the other end of the telescopic cylinder is connected to the pressure plate (121); one end of the pressure plate (121) is hinged on the workbench in a rotating mode around a horizontal shaft, and the other end of the pressure plate is pressed on the upper end of the rectangular rack when retracting through the telescopic cylinder (122); and arranged in series along the direction of movement of the table

The spot hole machining station (21) comprises a first body which is movably arranged along the drilling feeding direction, and a plurality of spot hole drill bits (211) which are aligned with the holes are arranged on the first body;

the first hole expanding machining station (22) comprises a second body which is movably arranged along the drilling feeding direction, and a first group of hole expanding drill bits (221) which are aligned with non-adjacent holes are arranged on the second body;

the second hole expanding machining station (23) comprises a third body which is movably arranged along the drilling feeding direction, and a second group of hole expanding drill bits (231) which are aligned with the residual holes are arranged on the third body;

the orifice chamfering machining station (24) comprises a fourth body which is movably arranged along the drilling feeding direction, and a plurality of orifice chamfering drill bits (241) which are aligned with the holes are arranged on the fourth body;

a first tapping machining station (25) comprising a fifth body arranged to move in a drilling feed direction, the fifth body having a first set of tapping bits (251) aligned with non-adjacent holes;

and the second tapping machining position (26) comprises a sixth body movably arranged along the drilling feeding direction, and a second group of tapping drill bits (261) aligned with the residual holes are arranged on the sixth body.

4. The processing apparatus of claim 3, wherein the ejection mechanism comprises: the device comprises a third connecting rod (13), a fourth connecting rod (14) and a telescopic rod (15), wherein one end of the telescopic rod (15) is connected onto the workbench, the other end of the telescopic rod is hinged to one end of the third connecting rod (13) and one end of the fourth connecting rod (14), the other end of the third connecting rod (13) is hinged to a third positioning block (113), and correspondingly, the other end of the fourth connecting rod (14) is hinged to a fourth positioning block (114).

5. The processing apparatus according to claim 3, wherein a side of each positioning block adjacent to the rectangular edge is provided with a guide slope (115) approaching the rectangular edge from top to bottom.

6. The processing apparatus according to claim 3, wherein the first positioning block (111) is disposed near a midpoint of an inner side of a first short side of the rectangular frame, the second positioning blocks A (112a) and B (112B) are respectively disposed near two ends of an inner side of a second long side of the rectangular frame, the third positioning block (113) is disposed near a midpoint of an inner side of a third short side of the rectangular frame, and the fourth positioning block (114) is disposed near a midpoint of an inner side of a fourth long side of the rectangular frame.

7. The machining apparatus according to claim 3, characterized in that the body is arranged to slide laterally on a first guide rail (27) of the machine tool and is moved to and fro by a first screw drive assembly (28).

8. The machine according to claim 7, wherein the worktable is arranged on a second guide rail (29) of the machine tool in a transverse sliding manner and can realize reciprocating movement through a second screw transmission assembly (30), and the second guide rail (29) is perpendicular to the length extension direction of the first guide rail (27).

9. The processing equipment according to claim 3, wherein the drill bit is arranged at the end part of the transmission rod, the transmission rods are driven by gears, and the rotation directions of the drill bits on the stations are the same.