CN206475054U - A kind of fast advance and retreat cutter mechanism - Google Patents

Abstract

The utility model relates to the technical field of mechanical processing, in particular to a rapid advance and retreat mechanism, comprising a slidable feed carriage, a buffer device and an air pressure transmission system; the feed carriage is equipped with a vertical shaft and a tool to be processed, and the feed carriage One end of the feed carriage is connected to the pneumatic transmission system, and the other end of the feed carriage is connected to the second buffer; the pneumatic transmission system includes a cylinder and a pneumatic transmission control system. The end is rigidly connected with the feed carriage. The pneumatic transmission control system includes an air compressor, a pressure reducing valve, a two-position five-way valve and a one-way throttle valve assembly connected in sequence. The two-position five-way valve passes through the first one-way The throttle valve is connected to one end of the cylinder body, and the two-position five-way valve is connected to the other end of the cylinder body through the second one-way throttle valve. The utility model drives the feed carriage by means of air pressure transmission, realizes the fast advance and retreat of the cutter, and ensures the repeated positioning accuracy of the rapid movement of the feed carriage.

Description

A rapid advance and retreat knife mechanism

technical field

The utility model relates to the technical field of mechanical engineering, in particular to a rapid advance and retreat knife mechanism.

Background technique

A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinding machines use high-speed rotating grinding wheels for grinding, and a few use other abrasive tools such as oil stones and abrasive belts and free abrasives for processing, such as honing machines, superfinishing machine tools, abrasive belt grinders, grinding machines and polishing machine etc. The traditional tool grinding machine adopts the mechanical structure of the feed hand wheel and the feed screw to complete the process of the workbench and the tool from the measurement, the tool change position to the sharpening position and the tool feeding. Usually the tool measurement, the tool change position to the grinding position The distance between the tool positions is long, and the feed amount (that is, the sum of the tool removal amount and the wear amount of the grinding wheel) is relatively small.

The feed screw with a large pitch can make the tool quickly move from the measuring and tool changing position to the sharpening position, but the micro-feed cannot be realized when the tool is fed; and the small-pitch screw feed can realize the micro-feed of the tool Grinding, but it is impossible to make the tool reach the sharpening position quickly from the measuring and tool changing position; moreover, no matter whether a small-pitch lead screw or a large-pitch lead screw is used, it cannot ensure that the tool goes from the sharpening position to the measuring and tool changing position multiple times repeat positioning accuracy. In addition, the handwheel feed is used when sharpening the knife, which is completely determined by the input torque of the operator. It is easy to force the feed, resulting in chipping of the machined tool and damage to the feed screw. It can be seen that the mechanism adopted by the current grinding machine cannot realize the fast advance and retreat of the knife, and cannot ensure the repeated positioning accuracy of the knife from the sharpening position to the measurement and tool change positions.

Utility model content

(1) Technical problems to be solved

The utility model provides a rapid advance and retreat mechanism, which is used to solve the problem that the existing cutter grinder cannot realize the rapid advance and retreat function with high repeat positioning accuracy.

(2) Technical solution

In order to solve the above technical problems, the utility model provides a rapid advance and retreat knife mechanism, including a slidable feed carriage, a buffer device and a pneumatic transmission system; the buffer device includes a first buffer and a second buffer; the The feed carriage is equipped with a vertical shaft and a tool to be processed, one end of the feed carriage is connected to the pneumatic transmission system, and the other end of the feed carriage is connected to the second buffer; the pneumatic transmission system includes a cylinder and A pneumatic transmission control system that controls the action of the cylinder, the cylinder includes a cylinder body and a telescopically movable piston rod, the head of the cylinder body is provided with the first buffer, the outer end of the piston rod is connected to the The feed carriage is rigidly connected; the pneumatic transmission control system includes an air compressor, a pressure reducing valve, a two-position five-way valve and a one-way throttle valve assembly connected in sequence, and the one-way throttle valve assembly includes a first A one-way throttle valve and a second one-way throttle valve, the two-position five-way valve is connected to one end of the cylinder body through the first one-way throttle valve, and the two-position five-way valve is connected to one end of the cylinder through the first one-way throttle valve. Two one-way throttle valves are connected to the other end of the cylinder.

Wherein, the pneumatic transmission control system further includes a filter, and the filter is arranged between the air compressor and the pressure reducing valve.

Wherein, the pneumatic transmission control system further includes a pressure gauge, and the pressure gauge is arranged between the pressure reducing valve and the two-position five-way valve.

Wherein, the pneumatic transmission control system further includes a lubricator, and the lubricator is arranged between the pressure gauge and the two-position five-way valve.

Wherein, the pneumatic transmission control system further includes an air storage tank connected to the air compressor for storing excess compressed air.

Wherein, the two-position five-way valve is connected with a muffler.

Wherein, the feed carriage is slidably connected to the bed, and the cylinder is fixed on the bed through a fixing assembly.

Wherein, the fixed assembly includes a cylinder mounting sleeve fixedly connected to the bed and a bottom plate arranged at one end of the cylinder mounting sleeve, the cylinder mounting sleeve is provided with the cylinder, and the cylinder tail of the cylinder is connected to the Describe the floor.

Wherein, a connecting seat is fixedly installed on the head of the cylinder, and the connecting seat is fixedly connected to the first buffer.

Wherein, a buffer sleeve is fixedly installed on the other end of the feeding carriage, and the second buffer is sleeved in the buffer sleeve.

(3) Beneficial effects

Compared with the prior art, the rapid advance and retreat knife mechanism provided by the utility model has the following characteristics:

1. The rapid advance and retreat mechanism of the utility model adopts the pneumatic transmission system to connect the feed carriage, so as to realize the rapid advance and retreat of the cutter while ensuring the repeated positioning accuracy;

2. The rapid advance and retreat mechanism of the utility model, by setting the first buffer, can buffer the impact of the feed carriage on the bed during rapid retraction; by setting the second buffer, it can buffer the feed drag during rapid feed. The impact of the plate on the bed; the combination of the first buffer and the second buffer can ensure that the repeat positioning accuracy of the tool is within 0.003mm;

3. The rapid advance and retreat mechanism of the utility model sets the system pressure through the pressure reducing valve of the pneumatic transmission control system to ensure constant pressure grinding during tool grinding; the compressed air entering the cylinder is adjusted through the one-way throttle valve assembly The flow rate, and then control the speed of the extension and retreat of the piston rod, thereby controlling the speed of the rapid advance and retreat of the feed carriage.

Description of drawings

Fig. 1 is the overall structural diagram of the fast advancing and retreating mechanism of the utility model and the constant pressure feeding part;

Fig. 2 is the structural diagram of the fast advancing and retreating mechanism of the utility model;

Fig. 3 is the schematic diagram of the pneumatic transmission system of the present utility model;

Fig. 4 is the main sectional view of the screw reducer of the present utility model;

Fig. 5 is a side sectional view of the screw reducer of the present invention;

Fig. 6 is the structural diagram of the handwheel feed mechanism of the present utility model;

Fig. 7 is the structure drawing that the handwheel feed mechanism of the present invention is connected with the screw reducer;

In the figure, 1: bed; 2: feed carriage; 3: screw reducer; 301: box; 302: worm; 303: worm wheel; 304: screw; 305: end sleeve; 306: guide flat key; 307 : Lubricating oil nozzle hole; 4: Cylinder; 401: Cylinder body; 402: Piston rod; 5: Pneumatic transmission control system; 501: Air compressor; 502: Pressure reducing valve; 503: Two-position five-way valve; 504: First One-way throttle valve; 505: second one-way throttle valve; 506: muffler; 507: air storage tank; 508: filter; 509: pressure gauge; 510: lubricator; 6: first buffer; 7 : Feed handwheel mechanism; 701: Handwheel; 702: Feed drive shaft; 703 Helical gear; 704: Internal worm; 705: Internal worm; 706: Scale sleeve; 707: Scale turntable; 708: O-ring ;709: handle; 8: second buffer; 9: contact seat; 10: cylinder mounting sleeve; 11; bottom plate; 12: connecting seat; 13: locking block; 14: buffer sleeve; 15: bearing seat; 16 : Elastic coupling.

detailed description

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure or equivalent process conversion made by using the description of the utility model and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are all included in the scope of patent protection of the utility model in the same way.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of this invention. The terminology used herein in the description of the utility model is only for the purpose of describing specific implementations, and is not intended to limit the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a rapid advance and retreat mechanism, which is used to solve the problem that the existing cutter grinder cannot realize the rapid advance and retreat function with high repeat positioning accuracy.

As shown in Fig. 1-3, the embodiment of the utility model provides a rapid advance and retreat knife mechanism, including a slidable feed carriage 2, a buffer device and a pneumatic transmission system, and a vertical shaft and a driven carriage are installed on the feed carriage 2. Processing tools; it can be understood that the mechanism is installed on the bed 1 during operation, and the feed carriage 2 is slidably connected to the bed 1 through a linear guide rail pair, that is, the feed carriage 2 can be about 1 relative to the bed 1 Movement; wherein, the buffer device includes a first buffer and a second buffer; the left end of the feed carriage 2 is connected to a pneumatic transmission system, and the feed carriage 2 is driven forward or backward on the bed 1 through the pneumatic transmission system , so as to realize the tool feeding process and tool retracting process; the pneumatic transmission system includes a cylinder 4 fixed on the bed 1 and a pneumatic transmission control system 5 that controls the action of the cylinder 4, and the cylinder 4 includes a cylinder 401 and a telescopic movable piston Rod 402, the left end of piston rod 402 is located in the cylinder body 401, the right end of piston rod 402 can stretch out, the head (right end) of cylinder body 401 is provided with the first buffer 6, adopts variable buffer, can buffer When the feed carriage 2 moves backward to realize rapid tool retraction, the kinetic energy of the feed carriage 2 will impact the bed 1 to prevent the bed from vibrating; Under the action of the control system 5, the piston rod 402 moves forward or backward in the cylinder body 401, thereby driving the feed carriage 2 to feed or retreat. Pressure valve 502 and two-position five-way valve 503, one port of two-position five-way valve 503 is connected to one end of cylinder 401 through the first one-way throttle valve 504, and the other port of two-position five-way valve 503 is connected through the second one-way throttle valve. The other end of the cylinder body 401 is connected to the throttle valve 505 , and the other end of the feed carriage 2 is connected with the second buffer 8 .

It can be understood that the rapid advance and retreat mechanism provided by the utility model corresponds to the screw reducer 3 provided on the bed 1, the input shaft of the screw reducer 3 is connected to the feed handwheel mechanism 7, and the screw of the screw reducer 3 is connected to the The feed carriage 2 and the cylinder 4 are on the same axis; the second buffer 8 presses the screw of the screw reducer 3 when the tool enters the processing position, specifically, the screw of the screw reducer 3 is connected to the contact seat 9, and the second buffer The device 8 presses the contact seat 9 at the front end of the screw rod when the tool enters the processing position.

Since the feed carriage 6 is connected with the bed 1 of the machine tool by a pair of linear guide rails, the feed carriage 2 can move forward and backward along the guide rail. The feed carriage 2 is equipped with a vertical shaft and a tool holder, and the processed tool is installed on the tool holder. Therefore, the tool to be processed moves forward and backward along the guide rail together with the feed carriage to realize the movement from tool measurement, tool change position to tool processing position, and tool grinding process. The other end of the feed carriage 2 is connected to the second buffer 8, which is shown in Fig. 2 as the head of the feed carriage 2 is provided with a second buffer 8, and the function of the second buffer 8 is to buffer the feed carriage 2. The kinetic energy from tool measurement, tool change position to tool processing position can prevent its impact on the bed 1 of the machine tool. At the same time, through the first buffer 6 and the second buffer 8, it can ensure that the feed carriage 2 The rapid movement and repeat positioning accuracy of the processed tool is within 0.003mm. After the second buffer 8 is in full contact with the contact seat 9, the tool enters the tool processing position. At this time, the second buffer 8 at the head of the feed carriage 2 is pressed against the contact seat 9 under the pressure of the cylinder 4, and The contact seat 9 is tightly connected with the screw of the screw reducer 3. When the screw moves a certain distance along the direction of the knife under the action of the feed handwheel mechanism 8, the feed carriage 2 will follow the contact under the action of the cylinder pressure. The seat 9 moves the same distance to the feed direction. When the feed handwheel mechanism drives the screw of the screw reducer to feed, the second buffer 8 always bears against the contact seat 9, thus realizing the constant pressure feed of the tool processing. And this pressure depends on the pressure set by the pressure reducing valve 502 of the pneumatic transmission system 5 . During the whole working process, if the pressure value of the pressure reducing valve 502 is not adjusted, the feeding pressure during the whole processing process will not change, so constant pressure feeding can be maintained. When the two-position five-way valve 503 is switched to another position, the piston rod 402 of the cylinder 4 is retracted under pressure, the feed carriage 2 moves accordingly, and the second buffer 8 is out of contact with the contact seat 9. At this time The tool is also out of contact with the grinding wheel on the main shaft, and returns to the measurement and tool change position. At this time, it is mainly to observe the quality of the cutting edge of the tool and measure the size of the tool. If it is qualified, replace the next knife and sharpen a new knife.

Wherein, as shown in Fig. 3, the fast advancing and retreating knife mechanism provided by the utility model adopts a pneumatic transmission system which belongs to a typical inlet and outlet throttling speed regulation system, and the pressure reducing valve 502 sets the system pressure, and the pressure in the cylinder 4 The moving speed of the piston rod 402 is regulated by the one-way throttle valves 504, 505 of the inlet and outlet, that is to say, the moving speed of the feed carriage 2 rigidly connected with the piston rod 402 is controlled by two one-way throttle valves 504, 505. 505 throttle valve to adjust. When the two-position five-way valve 503 is in the position shown in Figure 2, the compressed air discharged from the air compressor 501 enters the cylinder 4 through the pressure reducing valve 502, the left position of the two-position five-way valve 503, and the first one-way throttle valve 504. The left chamber of the cylinder pushes the piston and piston rod 402 to move to the right, the feed carriage 2 connected to the piston rod 402 moves to the right, and the compressed air in the right chamber of the cylinder 4 passes through the check valve of the second one-way throttle valve 505 Enter the two-position five-way valve 503. Specifically, the two-position five-way valve 503 is connected with a muffler 506 , and the air discharged through the two-position five-way valve 503 is discharged into the atmosphere through the muffler 506 . When the two-position five-way valve 503 is switched to another position, the compressed air from the air compressor 501 enters the cylinder 4 through the pressure reducing valve 502, the right position of the two-position five-way valve 503, and the second one-way throttle valve 505. The right cavity of the cylinder, the piston rod 402 is pushed to move to the left by the piston, the feed carriage 2 connected to the piston rod 402 moves to the left, and the compressed air in the left cavity of the cylinder 4 passes through the check valve of the first one-way throttle valve 404 Entering the two-position five-way valve 403, the compressed air discharged from the two-position five-way valve 403 is discharged into the atmosphere through the muffler 506.

In this embodiment, the pneumatic transmission control system 5 also includes an air storage tank 507, which is connected to the air compressor 501, wherein the main function of the air storage tank 507 is: when the air compressor 501 is working, the redundant The compressed air is stored in the air storage tank 507. When the air compressor 501 is not working, the compressed air in the air storage tank 507 is used to supply the compressed air to the system to maintain the amount and pressure of compressed air required by the system. That is to say, the air storage tank 507 is both The energy storage device is also a voltage stabilizing device.

In this embodiment, the pneumatic transmission control system 5 also includes a filter 508, a pressure gauge 509, and an oil mist device 510. The air compressor 501 is connected to the filter 508 and the pressure reducing valve 502 in sequence through the air pressure pipeline, and the air compressor 501 discharges The compressed air first passes through the filter 508, which is used to separate the condensed moisture and other impurities in the compressed air, so that the compressed air can be initially purified; the pressure reducing valve 502 is connected to the pressure gauge 509, the lubricator 510 and the two-position five through the air pressure pipeline in sequence. Through valve 503, wherein, filter 508, pressure reducing valve 502 and lubricator 510 form a pneumatic triple piece, the pressure value of the system pressure set by pressure reducing valve 502 can be read on pressure gauge 509, and lubricator 510 can The lubricating oil is atomized and injected into the compressed air flow to lubricate the system.

In this embodiment, the cylinder 4 is fixed on the bed 1 through a fixing assembly, wherein the fixing assembly includes a cylinder installation sleeve 10 fixedly connected to the bed 1 and a bottom plate 11 arranged at one end of the cylinder installation sleeve 10. The cylinder 4 is installed on the cylinder installation. In the sleeve 10, the tail of the cylinder block 401 of the cylinder 4 is connected to the bottom plate 11, and the cylinder installation sleeve 10 is fastened on the bed 1 by bolts and positioned by straight pins. Set of 10 bolted connections are secured.

In this embodiment, the head of the cylinder body 401 is fixedly installed with a connection seat 12, and the first buffer 6 is arranged on the connection seat 12. The head of the cylinder body 401 is fastened with a top screw to install the connection seat 12. The upper thread is connected with the first buffer 6, through the first buffer 6, variable buffering is adopted, which can buffer the backward movement of the feed carriage 2 to realize rapid tool retraction, and the kinetic energy of the feed carriage 2 will affect the bed 1 shock, prevents vibration. In addition, the piston rod 402 of the cylinder 4 is connected to the tail of the feed carriage 2 through the locking block 13, the piston rod 402 and the locking block 13 are connected by threads, and are fastened by nuts, and the locking block 13 is connected with the feed by bolts. The extension plate 2 is connected at the end.

In this embodiment, the head of the feed carriage 2 is threadedly connected with the buffer cover 14, and the buffer cover 14 is threaded with the second buffer 8 and locked with a nut. Through the second buffer 8, the Buffer the kinetic energy of the rapid movement of the feed carriage 2 from the tool measurement, tool change position to the tool processing position to prevent its impact on the bed 1 of the machine tool. At the same time, through the cooperative arrangement of the first buffer 6 and the second buffer 8 , it can ensure that the repeat positioning accuracy of movement is within 0.003 mm.

In this embodiment, as shown in Figures 4 and 5, the screw reducer 3 includes a box body 301, a worm 302, a worm wheel 303, and a screw 304. Connected in the box 301; the worm 302 is connected with the worm wheel 303, the screw 304 is arranged in the worm wheel 303, and the worm wheel 303 is threaded with the screw 304; in addition, the box 301 is provided with an end sleeve 305 along the axis of the screw 304, The end sleeve 305 is connected with the screw rod 304 through a guide flat key 306 and locked by the screw. The input shaft of the screw reducer 3 and the worm 302 are designed as an integrated shaft, the rotary motion of the screw reducer 3 through the integrated shaft is converted into the linear motion output by the screw 304, and the integrated shaft is driven by the feed hand wheel mechanism 7 Rotate down.

The main function of the screw reducer 3 is to convert the rotary motion of the input shaft (that is, the above-mentioned integrated shaft) into the linear motion output by the screw 304. Since the input shaft of the screw reducer 3 and the screw are arranged at 90 degrees, the transmission of power is realized. 90 degree orientation change.

The central hole of the worm wheel 303 is provided with a screw 304, and the worm wheel 303 is matched with the screw 304 by trapezoidal thread, the screw 304 is connected to the end sleeve 305 through the guide flat key 306, and is locked by the screw, so the worm 302 is When rotating under the action of the handwheel mechanism 8, the screw 304 cannot rotate together with the worm wheel 303, but can move forward and backward along the direction of the guide flat key 306, thereby realizing the transformation from circular motion to linear motion.

In this embodiment, the end sleeve 305 is provided with a lubricating oil nipple hole 307, and the lubricating oil nipple hole 307 is provided with a lubricating oil nipple, through which lubricating oil can be regularly added to the screw reducer 3 to slow down the wear of the worm gear 303, the worm 302 and the bearings.

In this embodiment, as shown in Figure 6, the feed handwheel mechanism 7 includes a handwheel 701 and a feed transmission shaft 702 connected to the input shaft of the screw reducer 3, the feed transmission shaft 702 passes through the handwheel 701, and the handwheel 701 It is connected with the feed transmission shaft 702 by a flat key. Specifically, a handle 709 may be provided on the hand wheel 701 to facilitate the staff to turn the hand wheel 701 through the handle 709 . The feed handwheel mechanism 7 provided by the utility model can rotate the handwheel 701 by the staff, and under the action of the handwheel 701, the feed transmission shaft 702 keyed with the handwheel 701 is driven to rotate, and the feed transmission shaft 702 Driven by the drive, the input shaft of the screw reducer 3 is given rotational movement.

In this embodiment, the feed hand wheel mechanism also includes a helical gear 703, an internally meshing worm 704, an internally engaging worm wheel 705, a scale sleeve 706 and a scale dial 707, and the feed transmission shaft 702 passes through the helical gear 703, the scale sleeve 706 and The handwheel 701, the inner end of the helical gear 703 is connected with the feed transmission shaft 702 through a flat key, and the center hole of the scale sleeve 706 is connected with the feed transmission shaft 702 through a flat key, and the outer end of the helical gear 703 is connected with the internal meshing worm 704 meshing, the internally engaging worm 704 cooperates with the internally engaging worm wheel 705, and the internally engaging worm wheel 705 is connected with a scale turntable 707. The feed hand wheel mechanism 7 provided by the utility model, the hand wheel 701 drives the feed transmission shaft 702 to rotate, because the feed transmission shaft 702 is keyed to the helical gear 703, the feed transmission shaft 702 drives the helical gear 703 to rotate, and the helical gear 703 passes through The internal meshing worm 704 and the internal meshing worm wheel 705 drive the scale turntable 707 to rotate, so that the rotation angle can be controlled by the scale turntable 707 . The mutual cooperation between the internal meshing worm wheel 705, the internal meshing worm 704 and the helical gear 703 is mainly to realize the micro-feed of the feed hand wheel mechanism 7, which can realize the feed of 0.001mm and the micro-feed of the cutting edge of the high-precision tool Processing to ensure the surface roughness, dimensional accuracy and shape position accuracy of the cutting edge of the tool. In addition, an O-ring 708 is provided between the internal meshing worm wheel 705 and the scale dial 707, and the O-ring 708 functions as a seal on the outer cylindrical surface.

Specifically, as shown in Figure 7, the feed handwheel mechanism 7 is arranged on the bed 1, one end of the feed transmission shaft 702 passes through the helical gear 703 and the handwheel 701 in turn, and the other end of the feed transmission shaft 702 passes through The bed 1 is connected to the input shaft of the screw reducer 3, and the inner wall of the bed 1 is fixed with a bearing seat 15 by bolts, and the bearing seat 15 is provided with a bearing, and the bearing provided on the bed 1 is used to support the feed drive shaft 702 , the other end of the feed transmission shaft 702 passes through the bearing to connect to the elastic coupling 16 , and the other end of the elastic coupling 16 is connected to the input shaft of the screw reducer 3 . The feed transmission shaft 702 is connected to the input shaft of the screw reducer 3 through the elastic coupling 16, and the rotational displacement of the handwheel 701 of the feed handwheel mechanism 7 is input to the screw through the feed transmission shaft 702 and the elastic coupling 16. In the reducer 3, after the conversion of the screw reducer 3, the linear displacement of the screw rod 304 is output.

Cylinder 4 drives the feed carriage 2 to move quickly back and forth along the guide rail, realizing the rapid advance and retraction of the tool; the end position of the rapid retraction of the tool is determined by the retracted end position of the piston rod 402 of the cylinder 4, and this position is basically It is fixed; while the fast feed position of the tool is determined by the extension of the front end of the screw 304 of the screw reducer 3. When the tool and the feed carriage 2 quickly reach the feed position, the tool and the grinding wheel surface have not yet contacted. At this time, rotate the handwheel 701 of the feed handwheel mechanism 7 to make the screw 304 move in the direction of the feed, and the cutter and the feed carriage 2 will also move synchronously in the direction of the feed under the pressure of the cylinder 4 until the cutter Just in contact with the grinding wheel surface, this process is the process of tool setting, and then move along the tool feed direction to start the tool grinding process. During the tool grinding process, the tool and the feed carriage 2 are in constant It moves under the action of high gas pressure, which realizes the constant pressure grinding of the tool.

The utility model adopts a combination of a mechanical feed structure and a pneumatic transmission system, and provides a rapid advance and retreat mechanism to realize the rapid advance and retreat of the speed-adjustable cutter, ensuring that the repeat positioning accuracy is within 0.003 mm; when the fast When the advance and retreat mechanism feeds to a certain position, it works together with the follow-up screw reducer 3, and at the same time realizes the constant pressure feed during tool processing, ensuring that each feed is under uniform pressure and the uniformity of feed As well as the processing consistency and reliability of the cutting edge, avoiding damage to the mechanism due to human factors.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. a kind of fast advance and retreat cutter mechanism, it is characterised in that including slidable feeding planker, buffer unit and air pressure power train System；The buffer unit includes the first buffer and the second buffer；The feeding planker is provided with vertical shaft and processed cutter, One end connection pneumatic actuator system of the feeding planker, the other end of the feeding planker connects second buffer；Institute Pneumatic actuator system is stated including cylinder and the air pressure transmission control system of cylinder action is controlled, the cylinder include cylinder body and The piston rod of Telescopic movable, the head of the cylinder body is provided with first buffer, the outer end of the piston rod with it is described enter It is rigidly connected to planker；The air pressure transmission control system include be sequentially connected air compressor machine, pressure-reducing valve, two-position five-way valve and One-way throttle valve module, the one-way throttle valve module includes the first one-way throttle valve and the second one-way throttle valve, described two Five-way valve connects one end of the cylinder body by first one-way throttle valve, and the two-position five-way valve is unidirectional by described second Choke valve connects the other end of the cylinder body.

2. fast advance and retreat cutter mechanism according to claim 1, it is characterised in that the air pressure transmission control system also includes Filter, the filter is arranged between the air compressor machine and the pressure-reducing valve.

3. fast advance and retreat cutter mechanism according to claim 2, it is characterised in that the air pressure transmission control system also includes Pressure gauge, the pressure gauge is arranged between the pressure-reducing valve and the two-position five-way valve.

4. fast advance and retreat cutter mechanism according to claim 3, it is characterised in that the air pressure transmission control system also includes Oil sprayer, the oil sprayer is arranged between the pressure gauge and the two-position five-way valve.

5. fast advance and retreat cutter mechanism according to claim 1, it is characterised in that the air pressure transmission control system also includes Air accumulator, the air accumulator connects the air compressor machine, the unnecessary compressed air for storing.

6. the fast advance and retreat cutter mechanism according to any one of claim 1-5, it is characterised in that the two-position five-way valve connects It is connected to silencer.

7. fast advance and retreat cutter mechanism according to claim 1, it is characterised in that the feeding planker is slidably connected to lathe bed On, the cylinder is fixed on the lathe bed by fixation kit.

8. fast advance and retreat cutter mechanism according to claim 7, it is characterised in that the fixation kit includes being fixedly connected with institute The cylinder installation set and the bottom plate located at one end of the cylinder installation set of lathe bed are stated, the cylinder installation set is arranged with the gas Cylinder, the cylinder body afterbody of the cylinder connects the bottom plate.

9. fast advance and retreat cutter mechanism according to claim 8, it is characterised in that the head of the cylinder body is installed with company Joint chair, the connecting seat is fixedly connected with first buffer.

10. fast advance and retreat cutter mechanism according to claim 9, it is characterised in that the other end of the feeding planker is fixed It is provided with buffer set, the buffer set and is arranged with second buffer.