Drilling and grinding dual-purpose device for precision machine manufacturing

Abstract

The invention discloses a drilling and grinding dual-purpose device for precision machinery manufacturing, and relates to the technical field of drilling and grinding dual-purpose devices for precision machinery manufacturing, the drilling and grinding dual-purpose device for precision machinery manufacturing comprises a table body, a bench vice is slidably mounted on the upper surface of the table body, and a frame is fixedly mounted on the upper surface of the table body; a pressing rod is slidably mounted on the inner wall of the frame, a motor is fixedly mounted at the upper end of the pressing rod, a first rotating handle is rotatably mounted on the front surface of the frame, a second rotating handle is rotatably mounted on the front surface of the table body, and a retraction device is further arranged at the upper end of the table body. In the machining process, limiting between the inner cylinder and the outer cylinder can be relieved when a second pin is disengaged from a first round hole, the drill bit works under too large downward force, excessive abrasion can be caused, the service life of the drill bit is shortened, if the drill bit retracts excessively, the machining depth cannot meet the requirement, and the machining precision and consistency are affected.

Description

Technical Field

[0001] The invention relates to the technical field of drilling and grinding dual-purpose devices for precision machinery manufacturing, in particular to a drilling and grinding dual-purpose device for precision machinery manufacturing. Background Art

[0002] The invention discloses a drilling and grinding device for precision machinery manufacturing, which is a drilling and grinding auxiliary device for precision machinery manufacturing and is widely used in the field of mechanical processing.

[0003] The patent with patent announcement number CN211867105U discloses a dual-purpose drilling and grinding device for precision machinery manufacturing, which effectively purifies the dust generated during drilling and grinding and improves safety of use; it includes a workbench, a top frame, a hydraulic telescopic rod, a first connecting frame, a motor, a grinding wheel and a drill bit, a placement slot is provided on the workbench, a drill hole is provided at the bottom end of the placement slot, connecting columns are provided on the left front side, left rear side, right front side and right rear side of the bottom end of the workbench, connecting rods are provided on the left front side, left rear side, right front side and right rear side of the top end of the workbench, the top ends of the four groups of connecting rods are respectively connected to the left front side, left rear side, right front side and right rear side of the bottom end of the top frame, the top end of the hydraulic telescopic rod is connected to the bottom end of the top frame, and the top end of the first connecting frame is connected to the bottom end of the hydraulic telescopic rod; it also includes a purification box, bolts and an air pipe, the bottom end of the purification box is connected to the top end of the top frame, and a working chamber is provided inside the purification box.

[0004] The above patent sucks the dust generated during the drilling and grinding process into the working chamber of the purification box through the air intake hopper and the air pipe. The dust particles are then adsorbed by the dust removal bag, and the purified gas is discharged through the air outlet pipe, thereby effectively purifying the dust generated during the drilling and grinding process and improving the safety of use. However, when the downward force is too large, the drill bit may retract inward. If the drill bit retracts excessively, the processing depth may not meet the requirements, affecting the processing accuracy and consistency, and the drill bit material may not be able to withstand excessive force, increasing the risk of breakage or collapse, thus requiring frequent replacement. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a dual-purpose drilling and grinding device for precision machinery manufacturing, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a dual-purpose drilling and grinding device for precision machinery manufacturing, comprising a table body, a bench vise is slidably mounted on the upper surface of the table body, a frame is fixedly mounted on the upper surface of the table body, a pressing rod is slidably mounted on the inner wall of the frame, a motor is fixedly mounted on the upper end of the pressing rod, a No. 1 turning handle is rotatably mounted on the front surface of the frame, a No. 2 turning handle is rotatably mounted on the front surface of the table body, and a retraction device is also provided on the upper end of the table body; Wherein, the retraction device comprises an outer cylinder, an inner cylinder, a fixed head, a circular ring, a No. 1 column pin, a No. 2 column pin, a vertical rod, an extrusion rod, a long rod, an elastic telescopic block, a No. 1 push rod and a No. 2 push rod. The outer cylinder is fixedly mounted on the lower surface of the pressing rod, one end of the inner cylinder is slidably mounted on the inner wall of the outer cylinder, the fixed head is rotatably mounted on the lower end of the inner cylinder, the circular ring is slidably mounted on the circumferential surface of the inner cylinder, the vertical rod is slidably mounted on the top of the inner wall of the inner cylinder, the No. 1 column pin is fixedly mounted on the side of the vertical rod close to the inner wall of the inner cylinder, the No. 2 column pin is fixedly mounted on the side of the vertical rod close to the inner wall of the inner cylinder, the extrusion rod is slidably mounted on the bottom of the inner wall of the inner cylinder, the No. 1 push rod is fixedly mounted on the bottom of the circular ring, the No. 2 push rod is fixedly mounted on the top of the circular ring, and the long rod is slidably mounted on the bottom of the pressing rod One end of the long rod is in contact with the No. 2 push rod, and the elastic telescopic block is fixedly installed on the other end of the long rod. A square groove is provided on the side of the frame close to the elastic telescopic block, and the shape of the square groove matches the elastic telescopic block. The drill bit works under excessive downward force, which may cause excessive wear and shorten its service life. If the drill bit is excessively retracted, the processing depth may not meet the requirements, affecting the processing accuracy and consistency. After the drill bit drills a hole on the surface of the workpiece normally, if the No. 1 turning handle is not released in time and the No. 1 turning handle is continued to be turned, it will be elastically stretched and will be ejected, causing the elastic telescopic block to contact the inner wall of the square groove, so that the pressing rod cannot continue to move downward. The surface fixed head continues to move downward, causing wear on the surface of the workpiece, and at the same time protecting the workpiece from being pressed downward by the fixed head to cause deformation of the workpiece.

[0007] According to the above technical solution, a No. 1 spring is provided on the side of the vertical rod away from the inner wall of the inner cylinder, and the No. 1 spring is provided to push the vertical rod so that the No. 2 column pin contacts the No. 2 circular hole. A No. 2 spring is provided on the top of the inner cylinder and the top of the inner wall of the outer cylinder, and the No. 2 spring is provided to pull the inner cylinder toward the inside of the outer cylinder when the limit between the inner cylinder and the outer cylinder is contacted, and the side of the extrusion rod in contact with the vertical rod is set as an inclined surface.

[0008] According to the above technical solution, the No. 1 pin slides through the inner wall of the inner cylinder, a No. 1 circular hole is provided on the inner wall of the outer cylinder, the No. 2 pin slides through the inner wall of the inner cylinder, the No. 2 pin contacts the No. 2 circular hole, and the contact between the No. 2 pin and the No. 2 circular hole is to limit the outer cylinder and the inner cylinder.

[0009] According to the above technical scheme, in another embodiment of the present invention, a No. 2 turning handle is rotatably installed on the front surface of the platform body, and a retraction device, a protective device and a retreat device are also provided on the upper end of the platform body. The protective device includes a protective cover, an outer rod, an inner rod, a No. 3 column pin, an L-shaped rod, a fixed rod and a fixed block. The outer rod is fixedly installed on the lower surface of the pressing rod, one end of the inner rod is slidably installed on the inner wall of the outer rod, the protective cover is rotatably installed on the other end of the inner rod, the No. 3 column pin is slidably installed on the inner wall of the inner rod, a limiting hole is provided on the outer wall of the outer rod, the No. 3 column pin is in contact with the limiting hole, the L-shaped rod is fixedly installed on the circumferential surface of the inner cylinder, the fixed rod is fixedly installed on the bottom of the outer rod, and the fixed block The fixing pin is slidably installed on the circumferential surface of the protective cover, and a fixing pin is slidably installed on the side of the fixing rod close to the fixing block. A square groove is provided on the side of the fixing block close to the fixing rod, and the fixing pin contacts the inner wall of the square groove. The side of the fixing pin contacting the inner wall of the square groove is set as an inclined surface. The rotation of the protective cover will wrap the retracted drill bit to avoid loose clamping due to excessive downward force. In this way, when the speed is too fast, the drill bit will fly out due to the action of centrifugal force. Preventing the drill bit from flying out can effectively protect the safety of the staff and the device. The rotation of the protective cover will contact the fixed head to increase the friction of the fixed head and reduce the rotation speed of the fixed head. The reduced rotation speed of the fixed head can effectively reduce the possibility of the drill bit being detached from the fixed head.

[0010] According to the above technical solution, a No. 1 torsion spring is provided between the protective cover and the inner rod, and the No. 1 torsion spring is provided to drive the protective cover to rotate when the limit of the protective cover is released; a No. 3 spring is provided between the outer rod and the inner rod, and the No. 3 spring is provided to push the inner rod toward the outside of the outer rod when the limit between the outer rod and the inner rod is released; a No. 4 spring is provided between the No. 3 column pin and the inner rod, and the No. 4 spring is provided to push out the No. 3 column pin so that the No. 3 column pin contacts the limiting hole to limit the inner rod; a No. 5 spring is provided between the fixing pin and the fixing rod, and the No. 5 spring is provided to push the fixing pin out to contact the square groove so that the fixing pin limits the fixing block.

[0011] According to the above technical scheme, the retraction device includes a No. 1 hydraulic cylinder, a No. 1 hydraulic rod, a pull plate, a No. 2 hydraulic cylinder, a No. 2 hydraulic rod, an L-shaped plate, a limit plate, a No. 1 gear and a No. 2 gear. The No. 1 hydraulic cylinder is fixedly installed on the side of the outer rod away from the outer cylinder, one end of the No. 1 hydraulic rod is slidably installed on the inner wall of the No. 1 hydraulic cylinder, the pull plate is fixedly installed on the side of the inner rod close to the No. 1 hydraulic cylinder, the pull plate is fixedly installed on the other end of the No. 1 hydraulic rod, one end of the No. 2 hydraulic cylinder is fixedly installed on the side of the platform close to the No. 2 turning handle, the No. 2 hydraulic rod is slidably installed on the inner wall of the No. 2 hydraulic cylinder, the L-shaped plate is slidably installed on the side of the platform close to the No. 2 turning handle, and the limit plate is rotatably installed on the platform On the side close to the No. 2 handle, the No. 1 gear is rotatably installed on the side of the table body close to the No. 2 handle, and the No. 2 gear is fixedly installed on the circumferential surface of the shaft of the No. 2 handle. The rotation of the No. 2 gear will cause the bench vise to move to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents or cracks on the workpiece surface caused by the drill bit. Especially under high pressure conditions, the drill bit may have unnecessary physical impact on the workpiece. The movement of the cylinder will contact the inner wall of the No. 3 circular hole. The movement of the L-shaped plate will limit the limit plate in one direction. The one-way limitation of the limit plate will limit the No. 1 gear in one direction, thereby avoiding the bench vise being moved back to its original position without being fixed after being moved to the relative position, thereby affecting subsequent drilling.

[0012] According to the above technical solution, a No. 3 circular hole is opened on the circumferential surface of the No. 2 hydraulic rod close to the limit plate, and a cylinder is fixedly installed on the side of the L-shaped plate close to the No. 2 hydraulic rod, and the shape of the cylinder matches the No. 3 circular hole. The No. 3 circular hole is provided and the shape of the circular hole matches the cylinder in order to make the cylinder contact with the No. 3 circular hole, so that when the No. 2 hydraulic rod moves upward, the L-shaped plate is driven to move upward to release the limit on the limit plate.

[0013] According to the above technical solution, a No. 2 torsion spring is provided between the limit plate and the platform body, and the No. 2 torsion spring is provided to drive the limit plate back to its original position. A volute spring is provided between the No. 1 gear and the platform body, and the volute spring is provided to drive the No. 1 gear to rotate after the limit plate releases the limit on the No. 1 gear. The No. 1 hydraulic cylinder is connected to the No. 2 hydraulic cylinder through a hose, and the limit plate is in contact with the No. 1 gear.

[0014] The present invention provides a dual-purpose drilling and grinding device for precision machinery manufacturing. It has the following beneficial effects: (1) In the present invention, when the drill bit is retracted into the fixed head, it will contact the extrusion rod. When the No. 1 pin slides toward the inside of the inner tube, it will be out of contact with the inner tube. When the No. 2 pin slides toward the inside of the inner tube, it will be out of contact with the No. 1 circular hole. When the No. 2 pin is out of contact with the No. 1 circular hole, the limit between the inner tube and the outer tube will be released. The drill bit works under excessive downward force, which may cause excessive wear and shorten its service life. If the drill bit is excessively retracted, it may cause the processing depth to fail to meet the requirements, affecting the processing accuracy and consistency. After the drill bit drills a hole on the surface of the workpiece normally, if the No. 1 handle is not released in time and the No. 1 handle is continued to be rotated, the elastic telescopic block will be ejected, causing the elastic telescopic block to contact the inner wall of the square groove, so that the pressing rod cannot continue to move downward. The surface of the fixed head continues to move downward, causing wear on the surface of the workpiece, while protecting the workpiece from being pressed downward by the fixed head, causing the workpiece to deform.

[0015] (2) In this invention, when the inner tube moves toward the inner side of the outer tube, the L-shaped rod will be driven to move. The movement of the L-shaped rod will contact the No. 3 pin. The protective cover will be driven to rotate by the torsion force of the No. 1 torsion spring. The rotation of the protective cover will wrap the retracted drill bit to prevent the clamp from loosening due to excessive downward force. In this way, when the speed is too fast, the drill bit will fly out due to the centrifugal force. Preventing the drill bit from flying out can effectively protect the safety of workers and devices. The rotation of the protective cover will contact the fixed head, increase the friction of the fixed head and reduce the rotation speed of the fixed head. The reduction in the rotation speed of the fixed head can effectively reduce the possibility of the drill bit being detached from the fixed head.

[0016] (3) In the present invention, when the No. 2 hydraulic rod slides toward the inside of the No. 2 hydraulic cylinder, it will drive the L-shaped plate to move, so that the L-shaped plate will release the limit on the limit plate, and the limit plate will release the one-way limit on the No. 1 gear. At this time, the No. 1 gear will be driven by the accumulated force of the spiral spring to rotate. The rotation of the No. 1 gear will drive the No. 2 gear to rotate. The rotation of the No. 2 gear will move the bench vise to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents or cracks on the workpiece surface caused by the drill bit. Especially under high pressure, the drill bit may have unnecessary physical effects on the workpiece. The movement of the cylinder will contact the inner wall of the No. 3 circular hole. The movement of the L-shaped plate will limit the limit plate in one direction. The one-way limit of the limit plate will limit the No. 1 gear in one direction, avoiding the bench vise being moved back to its original position without being fixed after moving to the relative position, which will affect the subsequent drilling. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position structure of the ring and the first push rod of the present invention; Figure 3 This is a schematic diagram of the position structure of the extrusion rod and the vertical rod of the present invention; Figure 4This is a schematic diagram of the position structure of the outer rod and the inner rod of the present invention; Figure 5 This is a schematic diagram of the position structure of the fixing rod and the fixing block of the present invention; Figure 6 It is a schematic diagram of the position structure of a No. 1 hydraulic cylinder and a No. 1 hydraulic rod of the present invention; Figure 7 It is a schematic diagram of the position structure of the No. 2 hydraulic cylinder and the No. 2 hydraulic rod of the present invention.

[0018] In the figure: 1, table body; 2, bench vise; 3, pressing rod; 4, motor; 5, No. 1 turning handle; 6, No. 2 turning handle; 7, frame; 101, outer cylinder; 102, inner cylinder; 103, fixed head; 104, ring; 105, No. 1 column pin; 106, No. 2 column pin; 107, vertical rod; 108, extrusion rod; 109, long rod; 110, elastic telescopic block; 111, No. 1 push rod; 112, No. 2 Push rod; 201, protective cover; 202, outer rod; 203, inner rod; 204, No. 3 pin; 205, L-shaped rod; 206, fixed rod; 207, fixed block; 301, No. 1 hydraulic cylinder; 302, No. 1 hydraulic rod; 303, pull plate; 304, No. 2 hydraulic cylinder; 305, No. 2 hydraulic rod; 306, L-shaped plate; 307, limit plate; 308, No. 1 gear; 309, No. 2 gear. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 7 , one embodiment of the present invention is: a dual-purpose drilling and grinding device for precision machinery manufacturing, comprising a table body 1, a bench vise 2 is slidably mounted on the upper surface of the table body 1, a frame 7 is fixedly mounted on the upper surface of the table body 1, a pressing rod 3 is slidably mounted on the inner wall of the frame 7, a motor 4 is fixedly mounted on the upper end of the pressing rod 3, a No. 1 turning handle 5 is rotatably mounted on the front surface of the frame 7, a No. 2 turning handle 6 is rotatably mounted on the front surface of the table body 1, and a retraction device is also provided on the upper end of the table body 1; The retracting device includes an outer cylinder 101, an inner cylinder 102, a fixed head 103, a ring 104, a first pin 105, a second pin 106, a vertical rod 107, an extrusion rod 108, a long rod 109, an elastic telescopic block 110, a first push rod 111 and a second push rod 112. The outer cylinder 101 is fixedly mounted on the lower surface of the pressing rod 3, one end of the inner cylinder 102 is slidably mounted on the inner wall of the outer cylinder 101, and the fixed head 103 is rotatably mounted on the lower end of the inner cylinder 102. The ring 104 is slidably mounted on the circumferential surface of the inner cylinder 102, the vertical rod 107 is slidably mounted on the top of the inner wall of the inner cylinder 102, the first column pin 105 is fixedly mounted on the side of the vertical rod 107 close to the inner wall of the inner cylinder 102, the second column pin 106 is fixedly mounted on the side of the vertical rod 107 close to the inner wall of the inner cylinder 102, the extrusion rod 108 is slidably mounted on the bottom of the inner wall of the inner cylinder 102, the first push rod 111 is fixedly mounted on the bottom of the ring 104, and the second push rod 112 is fixedly mounted on the bottom of the ring 104. Mounted on the top of the ring 104, the long rod 109 is slidably installed at the bottom of the pressing rod 3, one end of the long rod 109 is in contact with the No. 2 push rod 112, and the elastic telescopic block 110 is fixedly installed on the other end of the long rod 109. A square groove is provided on the side of the frame 7 close to the elastic telescopic block 110, and the shape of the square groove matches the elastic telescopic block 110. The drill bit works under excessive downward force, which may cause excessive wear and shorten its service life. If the drill bit retracts excessively, it may cause the processing depth to not meet the requirements, affecting the processing accuracy and consistency. After the drill bit drills a hole on the surface of the workpiece normally, if the No. 1 turning handle 5 is not released in time and the No. 1 turning handle 5 is continued to be rotated, the elastic telescopic block 110 will be ejected. The elastic telescopic block 110 pops out and contacts the inner wall of the square groove, making it impossible for the pressing rod 3 to continue to move downward. The surface fixed head 103 continues to move downward, causing wear on the surface of the workpiece, and at the same time protecting the workpiece from being pressed downward by the fixed head 103 to cause the workpiece to deform.

[0021] A No. 1 spring is provided on the side of the vertical rod 107 away from the inner wall of the inner cylinder 102. The No. 1 spring is provided to push the vertical rod 107 so that the No. 2 column pin 106 contacts the No. 2 circular hole. A No. 2 spring is provided on the top of the inner cylinder 102 and the top of the inner wall of the outer cylinder 101. The No. 2 spring is provided to pull the inner cylinder 102 toward the inside of the outer cylinder 101 when the limit between the inner cylinder 102 and the outer cylinder 101 is contacted. The side of the extrusion rod 108 that contacts the vertical rod 107 is set as an inclined surface.

[0022] The No. 1 pin 105 slides through the inner wall of the inner cylinder 102. A No. 1 circular hole is provided in the inner wall of the outer cylinder 101. The No. 2 pin 106 slides through the inner wall of the inner cylinder 102. The No. 2 pin 106 contacts the No. 2 circular hole. The contact between the No. 2 pin 106 and the No. 2 circular hole is to limit the outer cylinder 101 and the inner cylinder 102.

[0023] When this embodiment is working: turn the bench vise 2 to fix the workpiece, turn the No. 2 handle 6 to move the bench vise 2 to the bottom of the fixed head 103, fix the grinding disc through the fixed head 103, turn the No. 1 handle 5 to lower the pressure rod 3, and the lowering of the No. 1 handle 5 will drive the fixed head 103 to lower, start the motor 4 to rotate the fixed head 103 to grind the surface of the workpiece to remove impurities from the workpiece surface, and replace the grinding disc with a drill bit after the impurities are removed, turn the No. 1 handle 5 to lower the pressure rod 3, and the lowering of the pressure rod 3 will drive the retraction device to lower, and the lowering of the retraction device will drive the drill bit to lower and open the surface of the workpiece. When the downward pressure of the pressure rod 3 is too large, the drill bit may not be able to drill a hole in the workpiece surface in time. At this time, the drill bit may retract into the fixed head 103, and the drill bit retracts When it reaches the inside of the fixed head 103, it will contact the extrusion rod 108. The contact between the drill bit and the extrusion rod 108 will push the extrusion rod 108 to move. The extrusion rod 108 moves and contacts the inclined surface of the vertical rod 107. The contact between the extrusion rod 108 and the inclined surface of the vertical rod 107 will push the vertical rod 107 to slide toward the side away from the inner wall of the inner cylinder 102. The sliding of the vertical rod 107 toward the side away from the inner wall of the inner cylinder 102 will drive the No. 1 column pin 105 and the No. 2 column pin 106 to move. The No. 1 column pin 105 slides toward the inside of the inner cylinder 102 and is out of contact with the inner cylinder 102. The No. 2 column pin 106 slides toward the inside of the inner cylinder 102 and is out of contact with the No. 1 circular hole. The No. 2 column pin 106 is out of contact with the No. 1 circular hole, which will release the limit between the inner cylinder 102 and the outer cylinder 101. , so that the inner cylinder 102 is pulled by the No. 1 spring to move toward the inside of the outer cylinder 101. The movement of the inner cylinder 102 toward the inside of the outer cylinder 101 will drive the fixed head 103 to move. The movement of the fixed head 103 will drive the drill bit to move, so as to prevent the drill bit from continuing to contact with the surface of the workpiece and causing damage to the surface of the workpiece. After the drill bit has drilled a hole on the surface of the workpiece normally, if the No. 1 turning handle 5 is not released in time and the No. 1 turning handle 5 is continued to be rotated, the No. 1 turning handle 5 will cause the pressing rod 3 to move downward, and the pressing rod 3 will move downward and contact with the No. 1 push rod 111, and the pressing rod 3 will push the No. 1 push rod 111 to slide upward, and the upward sliding of the No. 1 push rod 111 will push the ring 104 to slide upward, and the sliding of the ring 104 will contact with the No. 1 pin 105, and the contact between the ring 104 and the No. 1 pin 105 will push The first pin 105 slides toward the inner cylinder 102, and the sliding of the first pin 105 pushes the vertical rod 107 to slide, and the sliding of the vertical rod 107 drives the second pin 106 to move, and the movement of the second pin 106 will break away from the contact with the first round hole, and the separation of the second pin 106 from the first round hole will release the limit between the inner cylinder 102 and the outer cylinder 101, so that the inner cylinder 102 is pulled by the first spring to move toward the inner cylinder 101, and the upward movement of the ring 104 will push the second push rod 112 to move upward, and the upward movement of the second push rod 112 will contact the inclined surface of the long rod 109, pushing the long rod 109 to move toward the frame 7, and the movement of the long rod 109 will drive the elastic telescopic block 110 to move, and the movement of the elastic telescopic block 110 will contact the square groove.Then the elastic expansion block 110 will be ejected so that the elastic expansion block 110 contacts the inner wall of the square groove, and the pressing rod 3 cannot move downward further.

[0024] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a No. 2 turning handle 6 is rotatably installed on the front surface of the platform body 1, and a protective device and a retraction device are also provided on the upper end of the platform body 1. The protective device includes a protective cover 201, an outer rod 202, an inner rod 203, a No. 3 column pin 204, an L-shaped rod 205, a fixed rod 206 and a fixed block 207. The outer rod 202 is fixedly installed on the lower surface of the pressing rod 3, one end of the inner rod 203 is slidably installed on the inner wall of the outer rod 202, the protective cover 201 is rotatably installed on the other end of the inner rod 203, the No. 3 column pin 204 is slidably installed on the inner wall of the inner rod 203, a limiting hole is provided on the outer wall of the outer rod 202, the No. 3 column pin 204 is in contact with the limiting hole, the L-shaped rod 205 is fixedly installed on the circumferential surface of the inner cylinder 102, and the fixed rod 206 is fixedly installed on the bottom of the outer rod 202 The fixing block 207 is fixedly installed on the circumferential surface of the protective cover 201, and a fixing pin is slidably installed on the side of the fixing rod 206 close to the fixing block 207. A square groove is opened on the side of the fixing block 207 close to the fixing rod 206, and the fixing pin contacts the inner wall of the square groove. The side where the fixing pin contacts the inner wall of the square groove is set as an inclined surface. The rotation of the protective cover 201 will wrap the retracted drill bit to avoid loose clamping due to excessive downward force. In this way, when the speed is too fast, the drill bit will fly out due to the action of centrifugal force. Preventing the drill bit from flying out can effectively protect the safety of the staff and the device. The rotation of the protective cover 201 will contact with the fixed head 103, increase the friction of the fixed head 103 and reduce the rotation speed of the fixed head 103. The reduction in the rotation speed of the fixed head 103 can effectively reduce the possibility of the drill bit being detached from the fixed head 103.

[0025] A No. 1 torsion spring is provided between the protective cover 201 and the inner rod 203. The No. 1 torsion spring is provided to drive the protective cover 201 to rotate when the limit of the protective cover 201 is released. A No. 3 spring is provided between the outer rod 202 and the inner rod 203. The No. 3 spring is provided to push the inner rod 203 toward the outside of the outer rod 202 when the limit between the outer rod 202 and the inner rod 203 is released. A No. 4 spring is provided between the No. 3 column pin 204 and the inner rod 203. The No. 4 spring is provided to push out the No. 3 column pin 204 so that the No. 3 column pin 204 contacts the limiting hole to limit the inner rod 203. A No. 5 spring is provided between the fixing pin and the fixing rod 206. The No. 5 spring is provided to push the fixing pin out to contact the square groove so that the fixing pin limits the fixing block 207.

[0026] The retraction device includes a No. 1 hydraulic cylinder 301, a No. 1 hydraulic rod 302, a pull plate 303, a No. 2 hydraulic cylinder 304, a No. 2 hydraulic rod 305, an L-shaped plate 306, a limit plate 307, a No. 1 gear 308 and a No. 2 gear 309. The No. 1 hydraulic cylinder 301 is fixedly mounted on the side of the outer rod 202 away from the outer tube 101, one end of the No. 1 hydraulic rod 302 is slidably mounted on the inner wall of the No. 1 hydraulic cylinder 301, the pull plate 303 is fixedly mounted on the side of the inner rod 203 close to the No. 1 hydraulic cylinder 301, the pull plate 303 is fixedly mounted on the other end of the No. 1 hydraulic rod 302, one end of the No. 2 hydraulic cylinder 304 is fixedly mounted on the side of the platform 1 close to the No. 2 turning handle 6, the No. 2 hydraulic rod 305 is slidably mounted on the inner wall of the No. 2 hydraulic cylinder 304, the L-shaped plate 306 is slidably mounted on the side of the platform 1 close to the No. 2 turning handle 6, the limit plate 307 The positioning plate 307 is rotatably mounted on the side of the table body 1 close to the No. 2 turning handle 6, the No. 1 gear 308 is rotatably mounted on the side of the table body 1 close to the No. 2 turning handle 6, and the No. 2 gear 309 is fixedly mounted on the circumferential surface of the rotating shaft of the No. 2 turning handle 6. The rotation of the No. 2 gear 309 will move the bench vise 2 to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents or cracks on the workpiece surface caused by the drill bit. Especially under high pressure conditions, the drill bit may have unnecessary physical effects on the workpiece. The movement of the cylinder will contact the inner wall of the No. 3 circular hole. The movement of the L-shaped plate 306 will unidirectionally limit the limiting plate 307. The unidirectional limitation of the limiting plate 307 will unidirectionally limit the No. 1 gear 308, thereby avoiding the bench vise 2 being moved back to its original position without being fixed after being moved to the relative position, thereby affecting the subsequent drilling.

[0027] A No. 3 circular hole is provided on the circumferential surface of the No. 2 hydraulic rod 305 near the limit plate 307, and a cylinder is fixedly installed on the side of the L-shaped plate 306 near the No. 2 hydraulic rod 305. The shape of the cylinder matches the No. 3 circular hole. The No. 3 circular hole is provided, and the shape of the circular hole matches the cylinder so that the cylinder contacts the No. 3 circular hole. When the No. 2 hydraulic rod 305 moves upward, it drives the L-shaped plate 306 to move upward to release the limit on the limit plate 307.

[0028] A No. 2 torsion spring is provided between the limit plate 307 and the platform 1. The purpose of the No. 2 torsion spring is to drive the limit plate 307 back to its original position. A volute spring is provided between the No. 1 gear 308 and the platform 1. The purpose of the volute spring is to drive the No. 1 gear 308 to rotate after the limit plate 307 releases the limit on the No. 1 gear 308. The No. 1 hydraulic cylinder 301 is connected to the No. 2 hydraulic cylinder 304 through a hose, and the limit plate 307 is in contact with the No. 1 gear 308.

[0029] When the present embodiment is working, when the inner cylinder 102 moves toward the inside of the outer cylinder 101, the L-shaped rod 205 will be driven to move, and the L-shaped rod 205 will contact the No. 3 column pin 204 when it moves, and the No. 3 column pin 204 will slide toward the inside of the inner rod 203 when the No. 3 column pin 204 slides toward the inside of the inner rod 203 to release the contact with the limiting hole, and the No. 3 column pin 204 releases the contact with the limiting hole to release the limit between the outer rod 202 and the inner rod 203, so that the inner rod 203 is pushed out by the No. 3 spring, and the inner rod 203 is pushed out by the No. 3 spring. The movement of the protective cover 201 will drive the fixed block 207 to move. The movement of the fixed block 207 will contact the inclined surface of the fixed pin and push the fixed pin to move toward the inside of the fixed rod 206. The movement of the fixed pin toward the inside of the fixed rod 206 will release the limit on the protective cover 201, so that the protective cover 201 is driven by the torsion of the No. 1 torsion spring to rotate. The rotation of the protective cover 201 will wrap the retracted drill bit to prevent the drill bit from flying out. The rotation of the protective cover 201 will contact the fixed head 103, increase the friction of the fixed head 103 and reduce the rotation speed of the fixed head 103.

[0030] When the bench vise 2 moves to the corresponding position, it pushes the L-shaped plate 306 to move, and the movement of the L-shaped plate 306 will push the cylinder to move, and the movement of the cylinder will contact the inner wall of the No. 3 circular hole, and the movement of the L-shaped plate 306 will limit the limit plate 307 in one direction, and the limit plate 307 being limited in one direction will limit the No. 1 gear 308 in one direction, and when the No. 2 turning handle 6 is rotated, the No. 2 gear 309 will be driven to rotate, and the rotation of the No. 2 gear 309 will drive the No. 1 gear 308 to rotate, and the rotation of the No. 1 gear 308 will drive the volute spring to store force, and when the inner rod 203 is pushed out, it will drive the pull plate 303 to move, and the movement of the pull plate 303 will pull the No. 1 hydraulic rod 302 to move toward the outside of the No. 1 hydraulic cylinder 301, and the No. 1 hydraulic rod 302 moving toward the outside of the No. 1 hydraulic cylinder 301 will pull the liquid inside the No. 2 hydraulic cylinder 304 to pass When the liquid in the No. 2 hydraulic cylinder 304 decreases, the No. 2 hydraulic rod 305 will be pulled to slide toward the No. 2 hydraulic cylinder 304. When the No. 2 hydraulic rod 305 slides toward the No. 2 hydraulic cylinder 304, it will drive the L-shaped plate 306 to move, so that the L-shaped plate 306 releases the limit on the limit plate 307, and the limit plate 307 will release the one-way limit on the No. 1 gear 308. At this time, the No. 1 gear 308 will be driven by the accumulated force of the volute spring to rotate, and the rotation of the No. 1 gear 308 will drive the No. 2 gear 309 to rotate. The rotation of the No. 2 gear 309 will move the bench vise 2 to its original position to reduce the scratches on the workpiece surface caused by the drill bit.

[0031] 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 dual-purpose drilling and grinding device for precision machinery manufacturing, comprising a platform (1), characterized in that: A bench vise (2) is slidably mounted on the upper surface of the platform (1), a frame (7) is fixedly mounted on the upper surface of the platform (1), a pressing rod (3) is slidably mounted on the inner wall of the frame (7), a motor (4) is fixedly mounted on the upper end of the pressing rod (3), a first turning handle (5) is rotatably mounted on the front surface of the frame (7), a second turning handle (6) is rotatably mounted on the front surface of the platform (1), and a retracting device, a protective device and a retracting device are also provided on the upper end of the platform (1); The retracting device comprises an outer cylinder (101), an inner cylinder (102), a fixed head (103), a circular ring (104), a first column pin (105), a second column pin (106), a vertical rod (107), an extrusion rod (108), a long rod (109), an elastic telescopic block (110), a first push rod (111) and a second push rod (112); the outer cylinder (101) is fixedly mounted on the lower surface of the pressing rod (3); one end of the inner cylinder (102) is slidably mounted on the inner wall of the outer cylinder (101); the fixed head (103) is rotatably mounted on the lower end of the inner cylinder (102); the circular ring (104) is slidably mounted on the circumferential surface of the inner cylinder (102); the vertical rod (107) is slidably mounted on the top of the inner wall of the inner cylinder (102); the first column pin (105) is fixedly mounted on the inner wall of the inner cylinder (102); The vertical rod (107) is located on a side close to the inner wall of the inner cylinder (102); the second column pin (106) is fixedly mounted on a side close to the inner wall of the inner cylinder (102); the extrusion rod (108) is slidably mounted on the bottom of the inner wall of the inner cylinder (102); the first push rod (111) is fixedly mounted on the bottom of the circular ring (104); the second push rod (112) is fixedly mounted on the top of the circular ring (104); the long rod (109) is slidably mounted on the bottom of the pressing rod (3); one end of the long rod (109) is in contact with the second push rod (112); the elastic telescopic block (110) is fixedly mounted on the other end of the long rod (109); and a square groove is provided on a side of the frame (7) close to the elastic telescopic block (110); the shape of the square groove matches that of the elastic telescopic block (110).

2. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 1, characterized in that: A first spring is provided on the side of the vertical rod (107) away from the inner wall of the inner cylinder (102), a second spring is provided at the top of the inner cylinder (102) and the top of the inner wall of the outer cylinder (101), and a side of the extrusion rod (108) in contact with the vertical rod (107) is provided as an inclined surface.

3. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 2, characterized in that: The No. 1 pin (105) slides through the inner wall of the inner cylinder (102), a No. 1 circular hole is provided on the inner wall of the outer cylinder (101), the No. 2 pin (106) slides through the inner wall of the inner cylinder (102), and the No. 2 pin (106) contacts the No. 2 circular hole.

4. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 3, characterized in that: The protective device comprises a protective cover (201), an outer rod (202), an inner rod (203), a third column pin (204), an L-shaped rod (205), a fixing rod (206) and a fixing block (207); the outer rod (202) is fixedly mounted on the lower surface of the pressing rod (3); one end of the inner rod (203) is slidably mounted on the inner wall of the outer rod (202); the protective cover (201) is rotatably mounted on the other end of the inner rod (203); the third column pin (204) is slidably mounted on the inner wall of the inner rod (203); a limiting hole is provided on the outer wall of the outer rod (202); The third column pin (204) contacts the limiting hole, the L-shaped rod (205) is fixedly mounted on the circumferential surface of the inner cylinder (102), the fixed rod (206) is fixedly mounted on the bottom of the outer rod (202), the fixed block (207) is fixedly mounted on the circumferential surface of the protective cover (201), a fixed pin is slidably mounted on a side of the fixed rod (206) close to the fixed block (207), a square groove is provided on a side of the fixed block (207) close to the fixed rod (206), the fixed pin contacts the inner wall of the square groove, and a side of the fixed pin contacting the inner wall of the square groove is set as an inclined surface.

5. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 4, characterized in that: A No. 1 torsion spring is provided between the protective cover (201) and the inner rod (203), a No. 3 spring is provided between the outer rod (202) and the inner rod (203), a No. 4 spring is provided between the No. 3 column pin (204) and the inner rod (203), and a No. 5 spring is provided between the fixing pin and the fixing rod (206).

6. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 5, characterized in that: The retraction device comprises a No. 1 hydraulic cylinder (301), a No. 1 hydraulic rod (302), a pull plate (303), a No. 2 hydraulic cylinder (304), a No. 2 hydraulic rod (305), an L-shaped plate (306), a limit plate (307), a No. 1 gear (308) and a No. 2 gear (309), wherein the No. 1 hydraulic cylinder (301) is fixedly mounted on a side of the outer rod (202) away from the outer cylinder (101), one end of the No. 1 hydraulic rod (302) is slidably mounted on the inner wall of the No. 1 hydraulic cylinder (301), the pull plate (303) is fixedly mounted on a side of the inner rod (203) close to the No. 1 hydraulic cylinder (301), and the pull plate (303) is fixedly mounted on a side of the inner rod (203) close to the No. 1 hydraulic cylinder (301). The second hydraulic cylinder (304) is fixedly mounted on the other end of the first hydraulic rod (302), one end of the second hydraulic cylinder (304) is fixedly mounted on the side of the platform (1) close to the second turning handle (6), the second hydraulic rod (305) is slidably mounted on the inner wall of the second hydraulic cylinder (304), the L-shaped plate (306) is slidably mounted on the side of the platform (1) close to the second turning handle (6), the limit plate (307) is rotatably mounted on the side of the platform (1) close to the second turning handle (6), the first gear (308) is rotatably mounted on the side of the platform (1) close to the second turning handle (6), and the second gear (309) is fixedly mounted on the circumferential surface of the rotating shaft of the second turning handle (6).

7. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 6, characterized in that: A third circular hole is provided on the circumferential surface of the second hydraulic rod (305) on the side close to the limit plate (307), and a cylinder is fixedly mounted on the side of the L-shaped plate (306) close to the second hydraulic rod (305), the shape of the cylinder matching the third circular hole.

8. A dual-purpose drilling and grinding device for precision machinery manufacturing according to claim 7, characterized in that: A second torsion spring is provided between the limit plate (307) and the platform (1), a scroll spring is provided between the first gear (308) and the platform (1), the first hydraulic cylinder (301) and the second hydraulic cylinder (304) are connected via a hose, and the limit plate (307) is in contact with the first gear (308).

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