Drilling device for mechanical manufacturing and machining

Abstract

The invention belongs to the technical field of mechanical manufacturing and machining, and discloses a drilling device for mechanical manufacturing and machining, the drilling device comprises a workbench, a hydraulic cylinder and a drilling mechanism, a transverse plate is mounted on the outer side of the drilling mechanism, a base is mounted at the top of the lower end of the workbench, and a workpiece is placed at the top of the base; a plurality of supporting columns are fixedly connected to the left side and the right side of the base correspondingly, a sliding base is fixedly connected to one end of each supporting column, and clamping blocks are further installed on the outer surfaces of the supporting columns in a sliding mode. According to the device, a sealing plate abuts against transmission fluid and gradually moves towards the deep position in a containing groove, under the condition that a first spring is compressed, a communicating block and a clamping block are driven to continuously apply pressure to a workpiece, flexible clamping force is generated, the clamping force is enough to center the workpiece in the left-right direction, and therefore the synchronous positioning function is achieved while the workpiece is fixed; and the working efficiency of the device is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical manufacturing and processing, and specifically relates to a drilling device for mechanical manufacturing and processing. Background Art

[0002] In the process of mechanical manufacturing, it is often necessary to drill some metal parts to meet the subsequent processing, positioning or assembly requirements. In the prior art, the workpiece is generally first fixed with a clamp, and the processing origin is determined by positioning, and then the clamp is locked to fix the workpiece to the standard origin position, so as to facilitate the drilling mechanism to drill the workpiece. However, the use of a clamp for fixing requires repeated adjustment and returning to the zero position after each processing. This results in the need to repeatedly adjust the processing zero position of the device for drilling the workpiece, which greatly reduces the work efficiency of the device. In addition, the existing clamps are too single in clamping the workpiece, either clamping it horizontally or using a pressure plate to press the workpiece downward so that the workpiece obtains sufficient fixed friction to reduce the impact of vibration and other factors caused by processing. This single clamping method causes excessive pressure on the workpiece and uneven pressure. For some workpieces with lower strength, internal stress damage will occur, thereby affecting the final yield of the workpiece. Summary of the invention

[0003] The object of the present invention is to provide a drilling device for mechanical manufacturing processing to solve the problems raised in the above background technology.

[0004] The cam is connected with the workpiece by the hydraulic cylinder to move the hydraulic cylinder to move the hydraulic cylinder to move the workpiece, and the cam is connected with the hydraulic cylinder to move the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece, the hydraulic cylinder being connected with the hydraulic cylinder to move the workpiece The clamping block is provided with a first cavity and a second cavity respectively, the first cavity, the second cavity and the inner cavity of the connecting block are connected and filled with transmission fluid, and the inner sealing sleeve of the second cavity is provided with a second cavity and a clamping column; The sealing column is provided with a placement groove at one end of the inner cavity of the connecting block, and a spring and a sealing plate are provided inside the placement groove. The sealing plate is in sealing contact with the transmission fluid.

[0005] As a preferred solution of the present invention, the cross-sectional shape of the clamping block is "L"-shaped, the clamping column sealing sleeve is arranged at the upper bottom of the clamping block, the clamping column is elastically supported in the No. 2 cavity by spring 2, and the bottom end of the clamping column faces the top of the workpiece.

[0006] As a preferred solution of the present invention, the drilling mechanism is composed of a motor and a drill rod transmission connection, the cross plate is fixedly installed at the bottom of the motor, a coolant nozzle is also installed on the right side of the top of the cross plate, and guide columns are fixedly installed on both sides of the top of the cross plate, and the top of the guide column passes through the upper top of the workbench upward.

[0007] As a preferred solution of the present invention, an upper slide groove and a lower slide groove are respectively provided on the upper and lower sides of the inner wall of the slide seat, the upper rack is slidably installed in the upper slide groove, and the lower rack is slidably installed in the lower slide groove, and the displacement directions of the upper rack and the lower rack are completely opposite.

[0008] As a preferred solution of the present invention, the transmission fluid is made of kerosene or synthetic oil, and the transmission fluid is in sealing contact with the top end of the sealing plate and the clamping column respectively.

[0009] As a preferred solution of the present invention, the connecting rod, the upper rack, the supporting column, the sliding seat, the clamping block and the connecting block are all arranged in two groups and are symmetrically distributed on the left and right sides of the workpiece.

[0010] As a preferred solution of the present invention, when the drilling mechanism and the horizontal plate move to the lowest point, one end of the sealing column located in the inner cavity of the connecting block abuts against the side of the inner wall of the connecting block horizontally close to the workpiece, and at this time the spring is compressed to the limit.

[0011] As a preferred solution of the present invention, the stiffness coefficient of the second spring is greater than the stiffness coefficient of the first spring, and the inner diameter value of the second cavity is greater than the inner diameter value of the placement groove.

[0012] The beneficial effects of the present invention are as follows: 1. The device has been redesigned to achieve a faster positioning speed and significantly improve the working efficiency of the device. The workpiece is supported by a base, and two groups of clamping blocks, connecting blocks and slide seats are slidably installed on the support columns fixed at both ends of the base. The left and right sides of the workpiece are synchronously abutted and pressed under the drive of the cross plate and the connecting rod to realize the horizontal synchronous clamping function. The drilling mechanism, the cross plate and the connecting rod are driven downward by the hydraulic cylinder, and the upper rack is synchronously driven to move back to back through the left and right groups of symmetrically distributed connecting rods. Under the transmission of the gear, the lower rack, the connecting plate and the sealing column are driven to move in the approaching direction, thereby pushing the transmission fluid in the inner cavity of the connecting block, abutting against the transmission fluid through the sealing plate, and gradually moving toward the deep inside of the placement groove, so that when the spring is compressed, the connecting block and the clamping block are driven to continuously press the workpiece and generate a flexible clamping force. The clamping force is sufficient to center the workpiece left and right, so that the workpiece can be fixed while realizing the synchronous positioning function, which greatly improves the working efficiency of the device.

[0013] 2. The device also improves the inner cavity of the clamping block, connecting the inner cavities of cavity No. 1 and cavity No. 2, so that the transmission fluid gathers toward cavity No. 2 under the push of the sealing column, and pushes the clamping column to move downward, thereby realizing the pressing function of the workpiece. When the sealing column moves in the approaching direction, it will gradually compress the effective volume of the transmission fluid stored in the inner cavity of the connecting block and the clamping block. At this time, the sealing plate will retreat to the deep end of the placement groove under the action of the transmission fluid, and pressurize the clamping column by compressing spring one, so that the clamping column overcomes the elastic force of spring two and moves downward. This design makes the clamping block first abut against the workpiece and complete horizontal clamping, and then uses the vertical downward movement of the clamping column to complete the pressing and fixing of the workpiece, realizing secondary clamping and fixing, and the workpiece is more stable after being fixed.

[0014] 3. The device provides sliding support for the upper rack and the lower rack respectively through the upper slide groove and the lower slide groove opened inside the slide seat. The setting of the gear can transmit the horizontal movement of the upper rack to the lower rack in the opposite direction. That is, when the cross plate and the connecting rod move downward, the upper rack, the gear and the lower rack push the sealing column to move toward one side of the workpiece. The placement groove opened at the end of the sealing column has a built-in spring 1 and a sealing plate, so that when the sealing column continues to move, the hydraulic pressure of the transmission fluid is used to push the sealing plate to move toward the depth of the placement groove, and the spring 1 is compressed, so that the clamping column is pushed downward by the continuously increasing elastic force of the sealing plate. In the horizontal direction, the elastic force of the spring 1 is used to flexibly clamp the two sides of the workpiece. At the same time, the pressing force generated by the spring 2 on the upper surface of the workpiece after the downward movement of the workpiece is used to assist the horizontal clamping force to form a combined force inclined downward along the surface of the workpiece, so that the workpiece can avoid damage to the rigidity of the clamping part while improving the stability of the transmission fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front schematic diagram of the structure of the present invention; Figure 2 It is a three-dimensional schematic diagram of the structure of the present invention; Figure 3 For the present invention Figure 2 A magnified schematic diagram of the structure at position A; Figure 4 It is a front cutaway schematic diagram of the structure of the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at B; Figure 6 It is a schematic diagram of the separation of the drilling mechanism, the horizontal plate, the connecting rod, the upper rack, the base, the workpiece, the support column, the clamping block, the connecting block, the slide seat, the gear, the sealing column, the connecting plate, the lower rack and the nozzle of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at C; Figure 8 It is a schematic diagram of the separation of the clamping block, the connecting block, the sealing column, the spring 1, the sealing plate, the connecting plate, the clamping column and the spring 2 of the present invention.

[0016] In the figure: 1. workbench; 2. hydraulic cylinder; 3. drilling mechanism; 4. cross plate; 5. guide column; 6. connecting rod; 7. upper rack; 8. base; 9. workpiece; 10. support column; 11. clamping block; 12. connecting block; 13. slide seat; 131. upper slide groove; 132. lower slide groove; 14. gear; 15. sealing column; 151. placement groove; 152. spring one; 153. sealing plate; 16. connecting plate; 17. lower rack; 18. nozzle; 19. transmission fluid; 20. chamber one; 21. chamber two; 22. clamping column; 23. spring two. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 8As shown, the embodiment of the present invention provides a drilling device for mechanical manufacturing processing, including a workbench 1, a hydraulic cylinder 2 and a drilling mechanism 3, a horizontal plate 4 is installed on the outer side of the drilling mechanism 3, a base 8 is installed on the top of the lower end of the workbench 1, a workpiece 9 is placed on the top of the base 8, a plurality of support columns 10 are fixedly connected on the left and right sides of the base 8, one end of the support column 10 is fixedly connected to a slide seat 13, a clamping block 11 is also slidably installed on the outer surface of the support column 10, and a connecting rod 13 is fixedly installed on one side of the clamping block 11. Block 12, the other side of the clamping block 11 is in contact with the workpiece 9, the upper and lower sides of the inner wall of the slide 13 are slidably installed with an upper rack 7 and a lower rack 17, the left and right ends of the cross plate 4 are respectively hinged with connecting rods 6, the connecting rod 6 is hinged with the top of the upper rack 7, the middle part of the slide 13 is rotatably installed with a gear 14, the gear 14 is respectively meshed with the upper rack 7 and the lower rack 17, the lower rack 17 is fixedly connected to the side facing the workpiece 9 with a connecting plate 16 and a sealing column 15, and the sealing column 15 is adapted to be inserted in the connecting block 12; The clamping block 11 has a first cavity 20 and a second cavity 21 respectively formed inside. The first cavity 20, the second cavity 21 and the inner cavity of the connecting block 12 are connected and filled with transmission fluid 19. The inner sealing sleeve of the second cavity 21 is provided with the second cavity 21 and the clamping column 22. The sealing column 15 is located at one end of the inner cavity of the connecting block 12 and is provided with a placement groove 151. The inner sealing sleeve of the placement groove 151 is provided with a spring 152 and a sealing plate 153. The sealing plate 153 is in sealing contact with the transmission fluid 19. The device has been redesigned to achieve a faster positioning speed and significantly improve the working efficiency of the device. The base 8 is provided to support the workpiece 9, and the support columns 10 fixed at both ends of the base 8 are respectively slidably installed with two groups of clamping blocks 11, connecting blocks 12 and slide seats 13. Under the drive of the cross plate 4 and the connecting rod 6, the left and right sides of the workpiece 9 are synchronously abutted and pressed to achieve the horizontal synchronous clamping function. The hydraulic cylinder 2 is used to drive the drilling mechanism 3, the cross plate 4 and the connecting rod 6 to move downward, and the upper rack 7 is synchronously driven to move in opposite directions through the left and right groups of symmetrically distributed connecting rods 6. , and under the transmission of the gear 14, the lower rack 17, the connecting plate 16, and the sealing column 15 are driven to move in the approaching direction, thereby pushing the transmission fluid 19 located in the inner cavity of the connecting block 12, contacting the transmission fluid 19 through the sealing plate 153, and gradually moving toward the deep inside of the placement groove 151, so that the spring 152 is compressed, driving the connecting block 12 and the clamping block 11 to continuously apply pressure to the workpiece 9, and generate a flexible clamping force, which is sufficient to divide the workpiece 9 into left and right centers, so that the workpiece 9 can be fixed while realizing the synchronous positioning function, which greatly improves the working efficiency of the device.

[0019] The cross-sectional shape of the clamping block 11 is "L"-shaped, the clamping column 22 sealing sleeve is arranged at the upper bottom of the clamping block 11, the clamping column 22 is elastically supported in the second cavity 21 by the second spring 23, and the bottom end of the clamping column 22 faces the top of the workpiece 9; The device also improves the inner cavity of the clamping block 11, connecting the inner cavities of chamber No. 1 20 and chamber No. 2 21, so that the transmission fluid 19 is conveniently gathered toward chamber No. 2 21 under the push of the sealing column 15, and pushes the clamping column 22 to move downward, thereby realizing the pressing function of the workpiece 9. When the sealing column 15 moves in the approaching direction, it will gradually compress the effective volume of the transmission fluid 19 stored in the inner cavities of the connecting block 12 and the clamping block 11. At this time, the sealing plate 153 will retreat to the deep of the placement groove 151 under the action of the transmission fluid 19, and apply pressure to the clamping column 22 by compressing the spring 1 152, so that the clamping column 22 overcomes the elastic force of the spring 2 23 and moves downward. This design enables the clamping block 11 to first abut against the workpiece 9 and complete horizontal clamping, and then use the vertical downward movement of the clamping column 22 to complete the pressing and fixing of the workpiece 9, realizing secondary clamping and fixing, and the workpiece 9 is more stable after being fixed.

[0020] The drilling mechanism 3 is composed of a motor and a drill rod transmission connection, a horizontal plate 4 is fixedly installed at the bottom of the motor, a coolant nozzle 18 is also installed on the right side of the top of the horizontal plate 4, and guide columns 5 are fixedly installed on both sides of the top of the horizontal plate 4. The top of the guide column 5 passes through the upper top of the workbench 1 upwards; After starting, the horizontal plate 4 is driven by the motor and drives the drill rod to rotate, and moves vertically downward under the drive of the hydraulic cylinder 2 to perform a drilling operation on the surface of the workpiece 9. At this time, the nozzle 18 can simultaneously cool the cooling liquid for cooling.

[0021] An upper slide groove 131 and a lower slide groove 132 are respectively provided on the upper and lower sides of the inner wall of the slide seat 13, the upper rack 7 is slidably installed in the upper slide groove 131, and the lower rack 17 is slidably installed in the lower slide groove 132, and the displacement directions of the upper rack 7 and the lower rack 17 are completely opposite; The device provides sliding support for the upper rack 7 and the lower rack 17 respectively through the upper slide groove 131 and the lower slide groove 132 opened inside the slide seat 13. The setting of the gear 14 can transmit the horizontal movement of the upper rack 7 to the lower rack 17 in the opposite direction. That is, when the cross plate 4 and the connecting rod 6 move downward, the sealing column 15 is pushed to move toward one side of the workpiece 9 through the upper rack 7, the gear 14 and the lower rack 17. The placement groove 151 opened at the end of the sealing column 15 has a built-in spring 152 and a sealing plate 153, so that the sealing column 15 can move continuously when it moves. The hydraulic pressure of the transmission fluid 19 is used to push the sealing plate 153 toward the depth of the placement groove 151, and the spring 152 is compressed. The continuously increasing elastic force of the sealing plate 153 pushes the clamping column 22 to move downward. In the horizontal direction, the elastic force of the spring 152 is used to flexibly clamp the two sides of the workpiece 9. At the same time, the pressing force generated by the spring 23 on the upper surface of the workpiece 9 after the downward movement of the workpiece 9 is used to assist the horizontal clamping force to form a combined force inclined downward along the surface of the workpiece, so that the workpiece can avoid damage to the rigidity of the clamping part while improving the stability of the transmission fluid 19.

[0022] The transmission fluid 19 is made of kerosene or synthetic oil, and the transmission fluid 19 is in sealing contact with the sealing plate 153 and the top end of the clamping column 22 respectively; The transmission fluid 19 has fluidity and is incompressible, which enables it to have the function of lossless power transmission, thereby converting the horizontal power of the sealing column 15 into the power of the vertical movement of the spring 2 23.

[0023] Among them, the connecting rod 6, the upper rack 7, the support column 10, the slide seat 13, the clamping block 11 and the connecting block 12 are all arranged in two groups and symmetrically distributed on the left and right sides of the workpiece 9; The connecting rod 6 , the upper rack 7 , the support column 10 , the slide seat 13 , the clamping block 11 and the connecting block 12 are symmetrically designed to achieve synchronous clamping operation on the left and right sides of the workpiece 9 .

[0024] When the drilling mechanism 3 and the horizontal plate 4 move to the lowest point, one end of the sealing column 15 located in the inner cavity of the connecting block 12 abuts against the inner wall of the connecting block 12 horizontally close to the workpiece 9, and at this time, the spring 152 is compressed to the limit; When the drilling mechanism 3 and the cross plate 4 move to the lowest point, the sealing column 15 stops moving in the inner cavity of the connecting block 12 and abuts against the connecting block 12, forming a rigid clamping force on the workpiece 9, so that the workpiece 9 can achieve a stable fixing function after completing the transition clamping process.

[0025] Among them, the spring coefficient of the second spring 23 is greater than the spring coefficient of the first spring 152, and the inner diameter value of the second cavity 21 is greater than the inner diameter value of the placement groove 151; The spring 2 23 and the spring 1 152 are simultaneously subjected to the hydraulic power from the transmission fluid 19 . At this time, the spring 1 152 is compressed to a greater displacement, so that the clamping block 11 can clamp the workpiece 9 .

[0026] Working principle: When the device is working, the hydraulic cylinder 2 drives the drilling mechanism 3 and the horizontal plate 4 to move to the highest point, the workpiece 9 is placed on the base 8, the front and rear spacing is adjusted, and then the workpiece 9 is clamped: the direction of the end of the connecting rod 6 connected to the upper rack 7 and the side of the upper rack 7 away from the workpiece 9 is recorded as the away direction, and the direction of the side close to the workpiece 9 is recorded as the approach direction; Start the hydraulic cylinder 2, and drive the drilling mechanism 3, the cross plate 4 and the connecting rod 6 to move downward. One end of the connecting rod 6 hinged to the cross plate 4 does not move in the horizontal direction. Then, drive the other end to move in the direction away from the workpiece 9. At this time, the left and right sides are respectively driven by the connecting rods 6 corresponding to the left and right sides to move in the away direction. Then, the upper rack 7 will drive the gear 14 to rotate during the movement. Since the position of the gear 14 is fixed but rotates at the same time, the lower rack 17 will move in the approaching direction through the transmission of the gear 14. At this time, the lower rack 17 will drive the connecting plate 16 and the sealing column 15 to enter the inner cavity of the connecting block 12, and use the spring 152 and the sealing plate 153 to generate elastic force, and the spring 23 and the clamping column 22 to absorb the elastic force, so as to drive the connecting block 12 and the clamping block 11 to move in the approaching direction as a whole. The left and right groups of clamping blocks 11 are driven by the lower rack 17 The lower part simultaneously applies pressure to the left and right sides of the workpiece 9 to flexibly clamp the workpiece 9: as the sealing column 15 moves toward the inner cavity of the connecting block 12, under the action of the transmission fluid 19, the pressure is transmitted to the spring 1 152 and the spring 2 23 through the sealing plate 153 and the clamping column 22 respectively. As the movement displacement of the lower rack 17 becomes larger and larger, the spring 1 152 and the spring 2 23 are continuously compressed, and the sealing plate 153 begins to move toward the inner cavity direction of the placement groove 151, and the clamping column 22 moves toward and begins to abut against the top of the workpiece 9. At this stage, the sealing column 15 can move relatively in the inner cavity of the connecting block 12, and the horizontal clamping force applied to the workpiece 9 by the clamping block 11 is flexible. At this time, the workpiece 9 as a whole begins to be automatically centered and positioned under the action of the workpiece 9, and the clamping column 22 generates a gradually increasing downward pressure on the top of the workpiece 9 through the transmission of the transmission fluid 19; Then, when the drilling mechanism 3 moves downward to the height of the upper surface of the workpiece 9, the drill rod starts to drill holes on the surface of the workpiece 9, and the nozzle 18 sprays coolant until the drilling mechanism 3 moves to the lowest point. At this time, one end of the sealing column 15 located in the inner cavity of the connecting block 12 abuts against the inner wall of the inner cavity of the connecting block 12 close to the workpiece 9, and the pressure exerted by the clamping column 22 on the workpiece 9 reaches the maximum, the spring 152 is compressed to the limit, and the spring 152 moves into the deep of the inner cavity of the placement groove 151; Finally, after the processing is completed, the hydraulic cylinder 2 drives the drilling mechanism 3, the cross plate 4 and the connecting rod 6 to move upward, and the upper rack 7 and the lower rack 17 begin to move in opposite directions, thereby driving the sealing column 15 in the away direction. At this time, in the process of the drilling mechanism 3 moving upward, the overall clamping force of the clamping block 11 on the workpiece 9 begins to decrease, and the effective volume of the inner cavity of the clamping block 11 and the connecting block 12 is restored under the resetting action of the sealing column 15, resulting in the pressure on the spring 1 152 and the spring 2 23 becoming smaller, and begins to push the sealing plate 153 and the clamping column 22 to reset.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drilling device for mechanical manufacturing, comprising a workbench (1), a hydraulic cylinder (2) and a drilling mechanism (3), wherein a horizontal plate (4) is installed on the outer side of the drilling mechanism (3), a base (8) is installed on the top of the lower end of the workbench (1), and a workpiece (9) is placed on the top of the base (8), characterized in that: A plurality of support columns (10) are fixedly connected to both left and right sides of the base (8); one end of the support column (10) is fixedly connected to a slide seat (13); a clamping block (11) is slidably mounted on the outer surface of the support column (10); a connecting block (12) is fixedly mounted on one side of the clamping block (11); the other side of the clamping block (11) abuts against the workpiece (9); an upper rack (7) and a lower rack (13) are slidably mounted on the upper and lower sides of the inner wall of the slide seat (13). 7), the left and right ends of the horizontal plate (4) are respectively hinged with connecting rods (6), the connecting rods (6) are hinged with the top of the upper rack (7), the middle part of the slide seat (13) is rotatably mounted with a gear (14), the gear (14) is respectively meshed with the upper rack (7) and the lower rack (17), the side of the lower rack (17) facing the workpiece (9) is fixedly connected with a connecting plate (16) and a sealing column (15), the sealing column (15) is adapted to be inserted into the connecting block (12); The clamping block (11) is provided with a first cavity (20) and a second cavity (21) respectively. The first cavity (20), the second cavity (21) and the inner cavity of the connecting block (12) are connected and filled with transmission fluid (19). The inner sealing sleeve of the second cavity (21) is provided with the second cavity (21) and a clamping column (22). The sealing column (15) is provided with a placement groove (151) at one end of the inner cavity of the connecting block (12); a spring (152) and a sealing plate (153) are provided inside the placement groove (151); and the sealing plate (153) is in sealing contact with the transmission fluid (19).

2. A drilling device for mechanical manufacturing according to claim 1, characterized in that: The cross-section of the clamping block (11) is in an "L" shape. The clamping column (22) sealing sleeve is arranged at the bottom of the upper end of the clamping block (11). The clamping column (22) is elastically supported in the second cavity (21) by a second spring (23). The bottom end of the clamping column (22) faces the top of the workpiece (9).

3. A drilling device for mechanical manufacturing according to claim 2, characterized in that: The drilling mechanism (3) is composed of a motor and a drill rod connected in a transmission manner. The horizontal plate (4) is fixedly mounted on the bottom of the motor. A coolant nozzle (18) is also mounted on the right side of the top of the horizontal plate (4). Guide columns (5) are fixedly mounted on both the left and right sides of the top of the horizontal plate (4). The top of the guide column (5) passes through the top of the workbench (1) upward.

4. A drilling device for mechanical manufacturing according to claim 3, characterized in that: An upper slide groove (131) and a lower slide groove (132) are respectively provided on the upper and lower sides of the inner wall of the slide seat (13); the upper rack (7) is slidably installed in the upper slide groove (131); the lower rack (17) is slidably installed in the lower slide groove (132); and the displacement directions of the upper rack (7) and the lower rack (17) are completely opposite.

5. A drilling device for mechanical manufacturing according to claim 4, characterized in that: The transmission fluid (19) is made of kerosene or synthetic oil, and the transmission fluid (19) is in sealing contact with the top ends of the sealing plate (153) and the clamping column (22), respectively.

6. A drilling device for mechanical manufacturing according to claim 5, characterized in that: The connecting rod (6), the upper rack (7), the support column (10), the slide seat (13), the clamping block (11) and the connecting block (12) are all arranged in two groups and are symmetrically distributed on the left and right sides of the workpiece (9).

7. A drilling device for mechanical manufacturing according to claim 6, characterized in that: When the drilling mechanism (3) and the horizontal plate (4) move to the lowest point, one end of the sealing column (15) located in the inner cavity of the connecting block (12) abuts against a side of the inner wall of the connecting block (12) horizontally close to the workpiece (9), and at this time, the spring 1 (152) is compressed to the limit.

8. A drilling device for mechanical manufacturing according to claim 7, characterized in that: The spring coefficient of the second spring (23) is greater than the spring coefficient of the first spring (152), and the inner diameter value of the second cavity (21) is greater than the inner diameter value of the placement groove (151).

Images