Drilling and grinding dual-purpose device for precision machinery manufacturing

Abstract

The application discloses a precision mechanical manufacturing drilling and grinding dual-purpose device, and relates to the technical field of precision mechanical manufacturing drilling and grinding dual-purpose devices.The precision mechanical manufacturing drilling and grinding dual-purpose device comprises a table body, a bench vice is slidably arranged on the upper surface of the table body, a frame is fixedly arranged on the upper surface of the table body, a pressing rod is slidably arranged on the inner wall of the frame, a motor is fixedly arranged on the upper end of the pressing rod, a first handle is rotatably arranged on the front surface of the frame, a second handle is rotatably arranged on the front surface of the table body, and a retraction device is further arranged on the upper end of the table body.The second cylindrical pin is separated from the contact with the first circular hole, so that the limiting between the inner cylinder and the outer cylinder is released.The drill bit may be excessively abraded and its service life is shortened under excessive downward force, and the machining depth may not meet the requirements and the machining precision and consistency are affected if the drill bit is excessively retracted.

Description

Technical Field

[0001] This invention relates to the technical field of drilling and grinding dual-purpose devices for precision machinery manufacturing, specifically a drilling and grinding dual-purpose device for precision machinery manufacturing. Background Technology

[0002] The drilling and grinding dual-purpose device for precision machinery manufacturing is a drilling and grinding auxiliary device used in precision machinery manufacturing, and it has been widely used in the field of machining.

[0003] Patent publication number CN211867105U discloses a dual-purpose drilling and grinding device for precision machinery manufacturing, which effectively purifies the dust generated during drilling and grinding, improving safety during use. It includes a worktable, a top frame, a hydraulic telescopic rod, a first connecting frame, a motor, a grinding wheel, and a drill bit. The worktable has a placement groove with a drilling hole at its bottom. Connecting columns are located on the left front, left rear, right front, and right rear sides of the bottom of the worktable. Connecting rods are located on the left front, left rear, right front, and right rear sides of the top of the worktable. The tops of the four sets of connecting rods are connected to the left front, left rear, right front, and right rear sides of the bottom of the top frame, respectively. The top of the hydraulic telescopic rod is connected to the bottom of the top frame, and the top of the first connecting frame is connected to the bottom of the hydraulic telescopic rod. The device also includes a purification box, bolts, and an air supply pipe. The bottom of the purification box is connected to the top of the top frame, and the purification box contains a working chamber.

[0004] The aforementioned patent draws dust generated during drilling and grinding into the working chamber of the purification box through an air inlet hopper and an air delivery pipe. The dust particles are then adsorbed by the dust collection bag, and the purified gas is discharged through the air outlet pipe, thereby effectively purifying the dust generated during drilling and grinding and improving safety. However, if too much downward force is applied, the drill bit may retract inward. If the drill bit retracts excessively, the processing depth may not meet the requirements, affecting the accuracy and consistency of the processing. Furthermore, the drill bit material may not be able to withstand excessive force, increasing the risk of breakage or chipping, thus requiring frequent replacement. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drilling and grinding dual-purpose device for precision machinery manufacturing, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a drilling and grinding dual-purpose device for precision machinery manufacturing, comprising a table body, a bench vise slidably mounted on the upper surface of the table body, a frame fixedly mounted on the upper surface of the table body, a pressing rod slidably mounted on the inner wall of the frame, a motor fixedly mounted on the upper end of the pressing rod, a first throttle handle rotatably mounted on the front surface of the frame, a second throttle handle rotatably mounted on the front surface of the table body, and a retraction device at the upper end of the table body;

[0007] The retraction device includes an outer cylinder, an inner cylinder, a fixed head, a ring, a first pin, a second pin, a vertical rod, a pressing rod, a long rod, an elastic telescopic block, a first push rod, and a second 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 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 first pin is fixedly mounted on the side of the vertical rod near the inner wall of the inner cylinder. The second pin is fixedly mounted on the side of the vertical rod near the inner wall of the inner cylinder. The pressing rod is slidably mounted on the bottom of the inner wall of the inner cylinder. The first push rod is fixedly mounted on the bottom of the ring. The second push rod is fixedly mounted on the top of the ring. The long rod is slidably mounted on the bottom of the pressing rod. One end of the long rod contacts the second push rod, and the elastic telescopic block is fixedly installed at the other end of the long rod. The frame has a square groove on the side near the elastic telescopic block. The shape of the square groove matches the elastic telescopic block. If the drill bit works under excessive downward force, it 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. When the drill bit drills a hole in the workpiece surface normally, if the first throttle handle is not released in time and the first throttle 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, preventing the pressing rod from continuing to move downward. The surface fixing head continues to move downward, causing wear on the workpiece surface. At the same time, the workpiece is protected by being pressed downward by the fixing head, causing the workpiece to deform.

[0008] 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. The No. 1 spring is provided to push the vertical rod so that the No. 2 pin contacts the No. 2 round 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. The No. 2 spring is provided to pull the inner cylinder towards the inside of the outer cylinder when the limit between the inner cylinder and the outer cylinder is contacted. The side of the extrusion rod that contacts the vertical rod is set as an inclined surface.

[0009] According to the above technical solution, the first pin slides through the inner wall of the inner cylinder, the inner wall of the outer cylinder has a first circular hole, the second pin slides through the inner wall of the inner cylinder, and the second pin contacts the second circular hole. The contact between the second pin and the second circular hole is to limit the movement of the outer cylinder and the inner cylinder.

[0010] According to the above technical solution, in another embodiment of the present invention, a second throttle is rotatably mounted on the front surface of the platform. The upper end of the platform is also provided with a retraction device, a protective device, and a backing device. The protective device includes a protective cover, an outer rod, an inner rod, a third pin, an L-shaped rod, a fixing rod, and a fixing block. The outer rod is fixedly mounted on the lower surface of the pressing rod. One end of the inner rod is slidably mounted on the inner wall of the outer rod. The protective cover is rotatably mounted on the other end of the inner rod. The third pin is slidably mounted on the inner wall of the inner rod. A limit hole is formed on the outer wall of the outer rod, and the third pin contacts the limit hole. The L-shaped rod is fixedly mounted on the circumferential surface of the inner cylinder. The fixing rod is fixedly mounted on the bottom of the outer rod. The fixing block... The fixing rod is fixedly installed on the circumferential surface of the protective cover. A fixing pin is slidably installed on the side of the fixing rod near the fixing block. A square groove is opened on the side of the fixing block near the fixing rod. The fixing pin contacts the inner wall of the square groove. The side of the fixing pin that contacts the inner wall of the square groove is set as an inclined surface. When the protective cover rotates, it will wrap around the retracted drill bit to prevent the clamping from loosening due to excessive downward force. In this way, when the rotation speed is too fast, the drill bit will fly out due to centrifugal force. Preventing the drill bit from flying out can effectively protect the safety of workers and equipment. When the protective cover rotates, it will contact the fixing head, increasing the friction of the fixing head and reducing the rotation speed of the fixing head. The reduction in the rotation speed of the fixing head can effectively reduce the possibility of the drill bit disengaging from the fixing head.

[0011] According to the above technical solution, a torsion spring is provided between the protective cover and the inner rod. The torsion spring is provided to drive the protective cover to rotate when the limiting position of the protective cover is released. A spring is provided between the outer rod and the inner rod. The spring is provided to push the inner rod to move outward of the outer rod when the limiting position between the outer rod and the inner rod is released. A spring is provided between the third pin and the inner rod. The spring is provided to push out the third pin so that the third pin contacts the limiting hole to limit the inner rod. A spring is provided between the fixing pin and the fixing rod. The spring is provided to push out the fixing pin to contact the square groove so that the fixing pin limits the fixing block.

[0012] According to the above technical solution, the retraction device includes a first hydraulic cylinder, a first hydraulic rod, a pull plate, a second hydraulic cylinder, a second hydraulic rod, an L-shaped plate, a limiting plate, a first gear, and a second gear. The first hydraulic cylinder is fixedly installed on the side of the outer rod away from the outer cylinder. One end of the first hydraulic rod is slidably installed on the inner wall of the first hydraulic cylinder. The pull plate is fixedly installed on the side of the inner rod near the first hydraulic cylinder and on the other end of the first hydraulic rod. One end of the second hydraulic cylinder is fixedly installed on the side of the platform near the second throttle. The second hydraulic rod is slidably installed on the inner wall of the second hydraulic cylinder. The L-shaped plate is slidably installed on the side of the platform near the second throttle. The limiting plate is rotatably installed on the platform. On the side near the No. 2 throttle, the No. 1 gear is rotatably mounted on the side of the bench body near the No. 2 throttle. The No. 2 gear is fixedly mounted on the circumferential surface of the No. 2 throttle shaft. The rotation of the No. 2 gear will move the bench vise back to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents, or cracks caused by the drill bit on the workpiece surface, especially under high pressure, where 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 unidirectionally limit the limiting plate. The unidirectional limitation of the limiting plate will unidirectionally limit the No. 1 gear, preventing the bench vise from being moved back to its original position after being moved to the relative position without being fixed, which would affect subsequent drilling.

[0013] According to the above technical solution, a third circular hole is provided on the circumferential surface of the second hydraulic rod near the limiting plate. A cylinder is fixedly installed on the side of the L-shaped plate near the second hydraulic rod. The shape of the cylinder matches the third circular hole. The purpose of providing a third circular hole and matching the shape of the hole with the cylinder is to make the cylinder contact the third circular hole. When the second hydraulic rod moves upward, it drives the L-shaped plate to move upward and release the limiting plate.

[0014] According to the above technical solution, a second torsion spring is provided between the limiting plate and the platform. The second torsion spring is provided to drive the limiting plate back to its original position. A spiral spring is provided between the first gear and the platform. The spiral spring is provided to drive the first gear to rotate after the limiting plate releases its restriction on the first gear. The first hydraulic cylinder and the second hydraulic cylinder are connected by a hose. The limiting plate is in contact with the first gear.

[0015] This invention provides a dual-purpose drilling and grinding device for precision machinery manufacturing. It has the following advantages:

[0016] (1) In this invention, when the drill bit retracts into the fixed head, it will contact the extrusion rod. When the No. 1 pin slides into the inner cylinder, it will disengage from the inner cylinder. When the No. 2 pin slides into the inner cylinder, it will disengage from the No. 1 round hole. When the No. 2 pin disengages from the No. 1 round hole, it will release the limit between the inner cylinder and the outer cylinder. When the drill bit works under excessive downward force, it 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. When the drill bit drills a hole on the surface of the workpiece normally, if the No. 1 throttle is not released in time and the No. 1 throttle is continued to rotate, the elastic telescopic block will be ejected and make the elastic telescopic block contact the inner wall of the square groove, so that the pressure rod cannot continue to move downward. The surface fixed head continues to move downward, causing wear on the surface of the workpiece. At the same time, the workpiece is protected by being pressed downward by the fixed head, causing the workpiece to deform.

[0017] (2) In this invention, when the inner cylinder moves into the outer cylinder, it will drive the L-shaped rod to move. The L-shaped rod will contact the No. 3 pin. The protective cover will be pushed to rotate by the torque of the No. 1 torsion spring. The rotation of the protective cover will wrap the retracted drill bit to prevent the clamping from loosening due to excessive downward force. In this way, when the rotation 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 the staff and the equipment. 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 of the rotation speed of the fixed head can effectively reduce the possibility of the drill bit separating from the fixed head.

[0018] (3) In this invention, when the No. 2 hydraulic rod slides into the No. 2 hydraulic cylinder, it will drive the L-shaped plate to move, so that the L-shaped plate releases the limit plate. Then the limit plate will release the one-way limit on the No. 1 gear. At this time, the No. 1 gear will be pushed to rotate by the force accumulated by the spiral spring. 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 vise to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents or cracks caused by the drill bit to the workpiece surface. Especially under high pressure, the drill bit may have unnecessary physical impact on the workpiece. 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 limit plate being limited in one direction will limit the No. 1 gear in one direction. This avoids the vise being moved back to its original position after being moved to the relative position, which will affect the subsequent drilling. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the position structure of the ring and the first push rod of the present invention;

[0021] Figure 3 This is a schematic diagram showing the position and structure of the extrusion rod and the vertical rod of the present invention;

[0022] Figure 4 This is a schematic diagram of the positional structure of the outer and inner rods of the present invention;

[0023] Figure 5 This is a schematic diagram showing the position and structure of the fixing rod and fixing block of the present invention;

[0024] Figure 6 This is a schematic diagram showing the position and structure of the first hydraulic cylinder and the first hydraulic rod of the present invention;

[0025] Figure 7 This is a schematic diagram showing the position and structure of the second hydraulic cylinder and the second hydraulic rod of the present invention.

[0026] In the diagram: 1. Platform; 2. Bench vise; 3. Pressing rod; 4. Motor; 5. No. 1 throttle; 6. No. 2 throttle; 7. Frame; 101. Outer cylinder; 102. Inner cylinder; 103. Fixed head; 104. Ring; 105. No. 1 pin; 106. No. 2 pin; 107. Vertical rod; 108. Pressing rod; 109. Long rod; 110. Elastic telescopic block; 111. No. 1 push rod; 112. No. 2 push rod. Push rod; 201, Protective cover; 202, Outer rod; 203, Inner rod; 204, No. 3 pin; 205, L-shaped rod; 206, Fixing rod; 207, Fixing 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, Limiting plate; 308, No. 1 gear; 309, No. 2 gear. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figures 1-7 One embodiment of the present invention is: a drilling and grinding dual-purpose device for precision machinery manufacturing, including a platform 1, a bench vise 2 slidably mounted on the upper surface of the platform 1, a frame 7 fixedly mounted on the upper surface of the platform 1, a pressing rod 3 slidably mounted on the inner wall of the frame 7, a motor 4 fixedly mounted on the upper end of the pressing rod 3, a first throttle 5 rotatably mounted on the front surface of the frame 7, a second throttle 6 rotatably mounted on the front surface of the platform 1, and a retraction device at the upper end of the platform 1;

[0029] The retraction 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, a pressing 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 installed on the lower surface of the pressing rod 3. One end of the inner cylinder 102 is slidably installed on the inner wall of the outer cylinder 101. The fixed head 103 is rotatably installed 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 pin 105 is fixedly mounted on the side of the vertical rod 107 near the inner wall of the inner cylinder 102. The second pin 106 is fixedly mounted on the side of the vertical rod 107 near the inner wall of the inner cylinder 102. The pressing 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 bottom of the circular ring 104. Mounted on top of the ring 104, the long rod 109 is slidably mounted on the bottom of the pressure rod 3. One end of the long rod 109 contacts the second push rod 112, and the elastic telescopic block 110 is fixedly mounted on the other end of the long rod 109. The frame 7 has a square groove on the side near the elastic telescopic block 110. The shape of the square groove matches the elastic telescopic block 110. If the drill bit works under excessive downward force, it 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. When the drill bit drills a hole on the surface of the workpiece normally, if the first throttle 5 is not released in time and the first throttle 5 is continued to be rotated, the elastic telescopic block 110 will be popped out. The elastic telescopic block 110 pops out and contacts the inner wall of the square groove, so that the pressure rod 3 cannot continue to move downward. The surface fixing head 103 continues to move downward, causing wear on the surface of the workpiece. At the same time, the workpiece is protected by being pressed down by the fixing head 103, causing the workpiece to deform.

[0030] A first spring is provided on the side of the vertical rod 107 away from the inner wall of the inner cylinder 102. The first spring is provided to push the vertical rod 107 to make the second pin 106 contact the second round hole. A second spring is provided on the top of the inner cylinder 102 and the top of the inner wall of the outer cylinder 101. The second 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.

[0031] The first pin 105 slides through the inner wall of the inner cylinder 102, and the inner wall of the outer cylinder 101 has a first round hole. The second pin 106 slides through the inner wall of the inner cylinder 102 and contacts the second round hole. The contact between the second pin 106 and the second round hole is to limit the movement of the outer cylinder 101 and the inner cylinder 102.

[0032] In this embodiment, during operation: the vise 2 is rotated to fix the workpiece. The second throttle handle 6 is rotated to move the vise 2 below the fixed head 103, which then fixes the grinding disc. The first throttle handle 5 is rotated to lower the pressure rod 3, which in turn lowers the fixed head 103. The motor 4 is started to rotate the fixed head 103 to grind the workpiece surface and remove impurities. After removing the impurities, the grinding disc is replaced with a drill bit. The first throttle handle 5 is rotated again to lower the pressure rod 3, which in turn lowers the retraction device, which in turn lowers the drill bit to open the workpiece surface. If the pressure of the pressure rod 3 is too great, the drill bit may not be able to drill a hole in the workpiece surface in time. In this case, the drill bit may retract back into the fixed head 103. The drill bit will contact the extrusion rod 108 inside the fixed head 103. This contact will push the extrusion rod 108 to move. The extrusion rod 108 will then contact the inclined surface of the vertical rod 107. This contact will push the vertical rod 107 to slide away from the inner wall of the inner cylinder 102. This sliding will cause the first pin 105 and the second pin 106 to move. The first pin 105 will slide into the inner cylinder 102 and disengage from it. The second pin 106 will slide into the inner cylinder 102 and disengage from the first circular hole. This disengagement of the second pin 106 from the first circular hole will release the restriction between the inner cylinder 102 and the outer cylinder 101. The inner cylinder 102 is pulled by the first spring to move inward toward the outer cylinder 101. This movement of the inner cylinder 102 towards the outer cylinder 101 causes the fixed head 103 to move, which in turn moves the drill bit. This prevents the drill bit from continuing to contact the workpiece surface and causing damage. After the drill bit has drilled a hole in the workpiece surface, if the first throttle handle 5 is not released in time and continues to be rotated, the first throttle handle 5 will cause the pressure rod 3 to move downward. The downward movement of the pressure rod 3 will contact the first push rod 111, which will push the first push rod 111 upward. The upward movement of the first push rod 111 will push the ring 104 upward, which will then contact the first pin 105. The contact between the ring 104 and the first pin 105 will push... The first pin 105 slides into the inner cylinder 102. This sliding of pin 105 pushes the vertical rod 107 to slide, which in turn moves the second pin 106. The second pin 106 then disengages from the first circular hole, releasing the restriction between the inner cylinder 102 and the outer cylinder 101. This causes the inner cylinder 102 to be pulled by the first spring towards the inner cylinder 101. The upward movement of the ring 104 pushes the second push rod 112 upward. The upward movement of the second push rod 112 brings it into contact with the inclined surface of the long rod 109, pushing it towards the frame 7. The movement of the long rod 109 then moves the elastic telescopic block 110, which in turn contacts the square groove.The elastic telescopic block 110 will then pop out, causing it to contact the inner wall of the square groove, thus preventing the pressing rod 3 from moving further downward.

[0033] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, a second throttle 6 is rotatably mounted on the front surface of the platform 1. A protective device and a retraction device are also provided at the upper end of the platform 1. The protective device includes a protective cover 201, an outer rod 202, an inner rod 203, a third 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 pin 204 is slidably mounted on the inner wall of the inner rod 203. A limit hole is formed on the outer wall of the outer rod 202, and the third pin 204 contacts the limit hole. The L-shaped rod 205 is fixedly mounted on the circumferential surface of the inner cylinder 102, and the fixing rod 206 is fixedly mounted on the bottom of the outer rod 202. The fixing block 207 is fixedly installed on the circumferential surface of the protective cover 201. The fixing rod 206 has a fixing pin slidably installed on the side near the fixing block 207. The fixing block 207 has a square groove on the side near the fixing rod 206. The fixing pin contacts the inner wall of the square groove. The side of the fixing pin that contacts the inner wall of the square groove is set as an inclined surface. When the protective cover 201 rotates, it will wrap around the retracted drill bit to prevent the clamping from loosening due to excessive downward force. In this way, when the rotation speed is too fast, the drill bit will fly out due to centrifugal force. Preventing the drill bit from flying out can effectively protect the safety of the workers and equipment. When the protective cover 201 rotates, it will contact the fixing head 103, increasing the friction of the fixing head 103 and reducing the rotation speed of the fixing head 103. The reduced rotation speed of the fixing head 103 can effectively reduce the possibility of the drill bit disengaging from the fixing head 103.

[0034] A torsion spring is provided between the protective cover 201 and the inner rod 203. The torsion spring is provided to rotate the protective cover 201 when the limit of the protective cover 201 is released. A spring is provided between the outer rod 202 and the inner rod 203. The spring is provided to push the inner rod 203 to move outward of the outer rod 202 when the limit between the outer rod 202 and the inner rod 203 is released. A spring is provided between the third pin 204 and the inner rod 203. The spring is provided to push out the third pin 204 so that the third pin 204 contacts the limit hole to limit the inner rod 203. A spring is provided between the fixing pin and the fixing rod 206. The spring is provided to push out the fixing pin to contact the square groove so that the fixing pin limits the fixing block 207.

[0035] The retraction device includes a first hydraulic cylinder 301, a first hydraulic rod 302, a pull plate 303, a second hydraulic cylinder 304, a second hydraulic rod 305, an L-shaped plate 306, a limit plate 307, a first gear 308, and a second gear 309. The first hydraulic cylinder 301 is fixedly installed on the side of the outer rod 202 away from the outer cylinder 101. One end of the first hydraulic rod 302 is slidably installed on the inner wall of the first hydraulic cylinder 301. The pull plate 303 is fixedly installed on the side of the inner rod 203 near the first hydraulic cylinder 301, and the other end of the pull plate 303 is fixedly installed on the other end of the first hydraulic rod 302. One end of the second hydraulic cylinder 304 is fixedly installed on the side of the platform 1 near the second throttle 6. The second hydraulic rod 305 is slidably installed on the inner wall of the second hydraulic cylinder 304. The L-shaped plate 307 is slidably installed on the side of the platform 1 near the second throttle 6. Position plate 307 is rotatably mounted on the side of table body 1 near the second throttle 6. Gear 1 308 is rotatably mounted on the side of table body 1 near the second throttle 6. Gear 2 309 is fixedly mounted on the circumferential surface of the shaft of the second throttle 6. Rotation of gear 2 309 will cause vise 2 to move back to its original position. Quickly removing the workpiece can reduce the risk of scratches, dents or cracks caused by the drill bit to the workpiece surface, especially under high pressure, where the drill bit may have unnecessary physical impact on the workpiece. The cylinder will contact the inner wall of the third circular hole. The movement of L-shaped plate 306 will unidirectionally limit the limit plate 307. The unidirectional limitation of limit plate 307 will unidirectionally limit gear 1 308, preventing the vise 2 from being moved back to its original position without being fixed after being moved to the relative position, which would affect subsequent drilling.

[0036] A third circular hole is provided on the circumferential surface of the second hydraulic rod 305 near the limiting plate 307. A cylinder is fixedly installed on the side of the L-shaped plate 306 near the second hydraulic rod 305. The shape of the cylinder matches the third circular hole. The purpose of providing the third circular hole and matching the shape of the hole with the cylinder is to make the cylinder contact the third circular hole. When the second hydraulic rod 305 moves upward, it drives the L-shaped plate 306 to move upward and release the limiting plate 307.

[0037] A second torsion spring is provided between the limiting plate 307 and the platform 1. The second torsion spring is provided to drive the limiting plate 307 back to its original position. A spiral spring is provided between the first gear 308 and the platform 1. The spiral spring is provided to drive the first gear 308 to rotate after the limiting plate 307 releases its limit on the first gear 308. The first hydraulic cylinder 301 and the second hydraulic cylinder 304 are connected by a hose. The limiting plate 307 is in contact with the first gear 308.

[0038] In this embodiment, when the inner cylinder 102 moves into the outer cylinder 101, it drives the L-shaped rod 205 to move. The L-shaped rod 205 then contacts the third pin 204. This contact pushes the third pin 204 towards the inner rod 203, releasing it from contact with the limiting hole. This release releases the limiting relationship between the outer rod 202 and the inner rod 203, causing the inner rod 203 to be pushed out by the third spring. The protective cover 201 will be moved, and 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, pushing the fixed pin to move inward toward the fixed rod 206. The movement of the fixed pin inward toward the fixed rod 206 will release the limit on the protective cover 201, so that the protective cover 201 will be pushed to rotate by the torque of the first torsion spring. The rotation of the protective cover 201 will wrap around 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, increasing the friction of the fixed head 103 and reducing the rotation speed of the fixed head 103.

[0039] When the vise 2 moves to the corresponding position, it pushes the L-shaped plate 306 to move. The movement of the L-shaped plate 306 pushes the cylinder to move, and the cylinder will contact the inner wall of the third circular hole. The movement of the L-shaped plate 306 will unidirectionally limit the limit plate 307. The unidirectional limitation of the limit plate 307 will unidirectionally limit the first gear 308. When the second throttle 6 is turned, it will drive the second gear 309 to rotate. The rotation of the second gear 309 will drive the first gear 308 to rotate. The rotation of the first gear 308 will drive the spiral spring to store force. When the inner rod 203 is pushed out, it will drive the pull plate 303 to move. The movement of the pull plate 303 will pull the first hydraulic rod 302 to move outward of the first hydraulic cylinder 301. The movement of the first hydraulic rod 302 to move outward of the first hydraulic cylinder 301 will pull the fluid inside the second hydraulic cylinder 304. The fluid enters the first hydraulic cylinder 301 through the hose. When the fluid in the second hydraulic cylinder 304 enters the first hydraulic cylinder 301, the fluid decreases. As the fluid in the second hydraulic cylinder 304 decreases, it pulls the second hydraulic rod 305 to slide into the second hydraulic cylinder 304. When the second hydraulic rod 305 slides into the second hydraulic cylinder 304, it drives the L-shaped plate 306 to move, causing the L-shaped plate 306 to release its restriction on the limiting plate 307. Then, the limiting plate 307 releases its one-way restriction on the first gear 308. At this time, the first gear 308 will be pushed to rotate by the force accumulated by the spiral spring. The rotation of the first gear 308 will drive the second gear 309 to rotate. The rotation of the second gear 309 will move the vise 2 back to its original position, which can reduce the scratches caused by the drill bit on the workpiece surface.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling and grinding dual-purpose 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 throttle (5) is rotatably mounted on the front surface of the frame (7). A second throttle (6) is rotatably mounted on the front surface of the platform (1). The upper end of the platform (1) is also provided with a retraction device, a protection device, and a backing device. The retraction 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), a pressing 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 installed on the lower surface of the pressing rod (3). One end of the inner cylinder (102) is slidably installed on the inner wall of the outer cylinder (101). The fixed head (103) is rotatably installed on the lower end of the inner cylinder (102). The ring (104) is slidably installed on the circumferential surface of the inner cylinder (102). The vertical rod (107) is slidably installed on the top of the inner wall of the inner cylinder (102). The first pin (105) is fixedly installed on the outer cylinder (102). The vertical rod (107) is located on the side of the inner wall of the inner cylinder (102). The second pin (106) is fixedly installed on the side of the vertical rod (107) near the inner wall of the inner cylinder (102). The extrusion rod (108) is slidably installed on the bottom of the inner wall of the inner cylinder (102). The first push rod (111) is fixedly installed on the bottom of the ring (104). The second push rod (112) is fixedly installed on the top of the ring (104). The long rod (109) is slidably installed 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 installed on the other end of the long rod (109). The frame (7) is provided with a square groove on the side near the elastic telescopic block (110). The shape of the square groove matches the elastic telescopic block (110). 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 on the top of the inner cylinder (102) and the top of the inner wall of the outer cylinder (101). The side of the extrusion rod (108) that contacts the vertical rod (107) is set as an inclined surface. The first pin (105) slides through the inner wall of the inner cylinder (102). A first round hole is opened on the inner wall of the outer cylinder (101). The second pin (106) slides through the inner wall of the inner cylinder (102). The second pin (106) contacts the first round hole.

2. The drilling and grinding dual-purpose device for precision machinery manufacturing according to claim 1, characterized in that: The protective device includes a protective cover (201), an outer rod (202), an inner rod (203), a third pin (204), an L-shaped rod (205), a fixing rod (206), and a fixing 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 third pin (204) is slidably installed on the inner wall of the inner rod (203). A limit hole is provided on the outer wall of the outer rod (202). The third pin (204) contacts the limiting hole. The L-shaped rod (205) is fixedly installed on the circumferential surface of the inner cylinder (102). The fixing 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). A fixing pin is slidably installed on the side of the fixing rod (206) near the fixing block (207). A square groove is opened on the side of the fixing block (207) near the fixing rod (206). The fixing pin contacts the inner wall of the square groove. The side of the fixing pin that contacts the inner wall of the square groove is set as an inclined surface.

3. The drill-grind dual purpose apparatus for precision mechanical manufacturing according to claim 2, characterized in that: A torsion spring is provided between the protective cover (201) and the inner rod (203), a spring is provided between the outer rod (202) and the inner rod (203), a spring is provided between the third pin (204) and the inner rod (203), and a spring is provided between the fixing pin and the fixing rod (206).

4. The drilling and grinding dual-purpose device for precision machinery manufacturing according to claim 3, characterized in that: The retraction device includes a first hydraulic cylinder (301), a first hydraulic rod (302), a pull plate (303), a second hydraulic cylinder (304), a second hydraulic rod (305), an L-shaped plate (306), a limiting plate (307), a first gear (308), and a second gear (309). The first hydraulic cylinder (301) is fixedly installed on the side of the outer rod (202) away from the outer cylinder (101). One end of the first hydraulic rod (302) is slidably installed on the inner wall of the first hydraulic cylinder (301). The pull plate (303) is fixedly installed on the side of the inner rod (203) close to the first hydraulic cylinder (301). The pull plate (303) is fixed... The first hydraulic rod (302) is installed at the other end. The second hydraulic cylinder (304) is fixedly installed at one end on the side of the platform (1) near the second throttle (6). The second hydraulic rod (305) is slidably installed on the inner wall of the second hydraulic cylinder (304). The L-shaped plate (306) is slidably installed on the side of the platform (1) near the second throttle (6). The limiting plate (307) is rotatably installed on the side of the platform (1) near the second throttle (6). The first gear (308) is rotatably installed on the side of the platform (1) near the second throttle (6). The second gear (309) is fixedly installed on the circumferential surface of the shaft of the second throttle (6).

5. The drill-grind dual purpose apparatus for precision mechanical manufacturing according to claim 4, characterized in that: The second hydraulic rod (305) has a third circular hole on its circumferential surface near the limiting plate (307). A cylinder is fixedly installed on the side of the L-shaped plate (306) near the second hydraulic rod (305), and the shape of the cylinder matches the third circular hole.

6. The drilling and grinding dual-purpose device for precision machinery manufacturing according to claim 5, characterized in that: A second torsion spring is provided between the limiting plate (307) and the platform (1), a spiral 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 by a hose, and the limiting plate (307) is in contact with the first gear (308).

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