Mechanism capable of being used for axis automatic micro-feeding

Abstract

The utility model discloses a mechanism capable of being used for automatic trace feeding of an axis, which relates to the field of machining equipment and comprises a support, a hydraulic linear oil cylinder, a profiling device, a lever device, a signaling device and an electrical control system, and the hydraulic linear oil cylinder, the profiling device, the lever device, the signaling device and the electrical control system are positioned on the support. The cylinder body can move left and right on the bracket; the profiling device is mounted above the cylinder body and comprises a profiling sample plate, one end of the profiling sample plate is rotationally connected to the left cylinder cover, and the other end of the profiling sample plate is supported above the right cylinder cover; the lever device comprises a sliding lead screw, a lever body and a mandrel, the sliding lead screw is arranged in the direction of the feeding axis in a sliding mode, one end of the lever body is connected with a radial ball bearing close to the profiling sample plate through the mandrel, the other end of the lever body makes contact with the sliding lead screw, and the portion, close to the end, of the lever body is connected with the spring plate and the swing support. The micro-feeding device has the advantages that micro-feeding in the axial direction can be achieved, automatic control is achieved, feeding precision is high, and labor cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining equipment, more specifically, it relates to a mechanism capable of automatic micro-feeding of axis. BACKGROUND

[0002] In the field of ultra-precision machine tools, micro-feeding mechanism is a key device for realizing high-precision feeding, which is widely used and crucial. The mechanism is usually matched with grinding tools, cutters and the like, aiming to meet the demand for high-precision machining in production. However, the current micro-feeding mechanism still has some limitations in technology: at present, the micro-feeding mechanism mostly adopts pneumatic or hydraulic transmission mode. These modes usually directly connect the piston rod of pneumatic cylinder or hydraulic cylinder with the executing mechanism to realize feeding. Due to the inherent characteristics of pneumatic or hydraulic mode, the feeding amount is often large, and it is difficult to realize accurate micro-feeding. This results in limited precision of traditional transmission mode, which cannot meet the requirement of high precision of micro-feeding in ultra-precision machining. In addition, most of the current micro-feeding mechanisms need to be operated manually, which not only causes further inaccuracy of precision due to human errors, but also has high labor cost.

[0003] Therefore, there is an urgent need for an improved micro-feeding mechanism. SUMMARY

[0004] In view of this problem in actual application, the utility model aims to provide a mechanism capable of automatic micro-feeding of axis, solving the problems of large feeding amount, low precision, large manual operation error and high cost in the prior art, so as to better meet the demand for ultra-precision machining. The specific scheme is as follows:

[0005] A mechanism capable of automatic micro-feeding of axis, comprising a support and a hydraulic linear cylinder, a profiling device, a lever device, a signaling device and an electrical control system located on the support, wherein:

[0006] The hydraulic linear cylinder comprises a cylinder body, a left cylinder cover and a right cylinder cover, and the cylinder body is movable left and right on the support;

[0007] The profiling device is installed above the cylinder body and comprises a profiling template, one end of which is rotatably connected to the left cylinder cover, and the other end is supported above the right cylinder cover;

[0008] The lever device comprises a sliding lead screw, a lever body and a mandrel, the sliding lead screw is slidably arranged along the feeding axis direction, one end of the lever body is connected to a radial spherical bearing close to the profiling template through the mandrel, the other end of the lever body contacts the sliding lead screw, and the end close to the end portion is connected with a spring plate and a swing support;

[0009] The signaling device is used to send signaling.

[0010] Further, the hydraulic linear cylinder further comprises a piston rod, the piston rod is a double-outlet-rod piston rod, the double-outlet-rod piston rod divides the inside of the cylinder body into left and right two chambers, and the left and right chambers are switched to make the cylinder body move left or right by switching hydraulic oil.

[0011] Further, the profile gauge device further comprises a rotating shaft and an adjusting screw, the left end of the profile gauge template is rotatably connected to the left cylinder cover through the rotating shaft, and the right end is supported above the right cylinder cover through the adjusting screw with a ball head end.

[0012] Further, the profile gauge device further comprises a spring knob and a cylindrical spiral tension spring, one end of the cylindrical spiral tension spring is fixed on the cylinder body, and the other end holds the profile gauge template through the spring knob.

[0013] Further, the profile surface on the profile gauge template is provided with one or two inclined surfaces.

[0014] Further, the swing support is fixed on the machine tool bed.

[0015] Further, the end of the sliding screw near the profile gauge template has a spherical surface, the lever body is located at the middle position of the sliding screw and the mandrel, one end of the lever body abuts against the spherical surface, and the other end abuts against the mandrel.

[0016] Further, two cylindrical spiral tension springs for tension are arranged on the sliding screw, so that the spherical surface at the end of the sliding screw is in close contact with the mandrel end on the lever body through the lever body.

[0017] Further, the signaling device comprises a micro switch LX and a travel switch base, the micro switch is installed on the travel switch base, and the micro switch is used for sending a signal to the micro switch LX when the hydraulic linear cylinder returns to the right position.

[0018] Further, the electrical control system controls the reversing, reciprocating movement and reciprocating speed of the hydraulic linear cylinder through a hydraulic pump, an electromagnetic valve and a pipeline system, and controls the periodic reciprocating movement of the hydraulic linear cylinder through electrical connection of the signaling device and the micro switch LX.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0020] The utility model discloses a mechanism that can be used for automatic micro-feeding of an axis, can realize micro-feeding in the direction of the axis, has high feeding precision, and is automatically controlled, reduces manual error, further improves precision and saves manual cost. DRAWINGS

[0021] Figure 1 It is the whole schematic view of the embodiment of the utility model;

[0022] Figure 2 For the utility model Figure 1 A-A cross-sectional view;

[0023] Figure 3 For the utility model embodiment of the top view.

[0024] Reference: 1, support;

[0025] 21, cylinder; 22, left cylinder cover; 23, right cylinder cover; 24, piston rod;

[0026] 31, template; 32, rotating shaft; 33, adjusting screw; 34, spring knob; 35, cylindrical helical tension spring;

[0027] 41, sliding screw; 42, lever body; 43, mandrel; 44, angular contact ball bearing; 45, spring plate; 46, swing support;

[0028] 51, travel switch base; 52, micro switch LX;

[0029] 100, machine tool bed. DETAILED DESCRIPTION

[0030] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0031] As Figure 1 shown, a mechanism for automatic micro-feeding of axis, including support 1, support 1 is fixed on machine tool bed 100, still include the hydraulic linear cylinder, template device, lever device, signaling device and electrical control system on support 1.

[0032] Hydraulic linear cylinder is mainly composed of cylinder 21, left cylinder cover 22, right cylinder cover 23 and piston rod 24. Among them, the cylinder 21 is preferably rectangular structure, the piston rod 24 is double-outlet rod piston rod, that is, the both ends of the cylinder 21 extend a piston rod 24, the double-outlet rod piston rod 24 is fixed on the support 1, the cylinder 21 has a cavity (not shown in the figure) inside, the piston part of the piston rod 24 is located in the cavity and divides the cavity into left and right two chambers, the piston rod 24 is hollow rod structure, hydraulic oil enters the left and right two chambers of the hydraulic cylinder from the hollow piston rod 24 of both ends. The cylinder 21 is also provided with electromagnetic reversing valve (not shown in the figure), the control of the electromagnetic reversing valve can control the switching of hydraulic oil into the left and right two chambers of the cylinder 21, so that the cylinder 21 moves left and right on the support 1.

[0033] A profile device is installed above the cylinder block 21. The profile device comprises a profile template 31, a rotating shaft 32, and an adjusting screw 33. The left end of the profile template 31 is rotatably connected to the left cylinder head 22 through the rotating shaft 32, and the right end is supported above the right cylinder head 23 through the adjusting screw 33 with a ball head. More specifically, the profile template 31 is arranged along the direction parallel to the axis of the cylinder block 21, the rotating shaft 32 is arranged along the direction perpendicular to the axis of the cylinder block 21, and the profile template 31 can rotate around the rotating shaft 32. The adjusting screw 33 penetrates the profile template 31 and extends the ball head out of the profile template 31 so that the ball head contacts the right cylinder head 23. By rotating the adjusting screw 33, the adjusting screw 33 can be screwed in or out towards the profile template 31, so that the right end of the profile template 31 rotates upwards or downwards, thereby rotating the profile template 31 around the rotating shaft 32, so as to adjust the slope of the profile surface on the profile template 31.

[0034] The profile device further comprises a spring knob 34 and a cylindrical helical tension spring 35. The spring knob 34 and the cylindrical helical tension spring 35 are both located to the left of the adjusting screw 33. A long slot (not shown in the figure) is formed on the profile template 31 to the left of the adjusting screw 33. The spring knob 34 is located in the long slot. One end of the cylindrical helical tension spring 35 is fixed on the cylinder block 21, and the other end holds the profile template 31 through the spring knob 34, so that the ball head of the adjusting screw 33 can be tightly supported on the right cylinder head 23. In addition, by manually rotating the spring knob 34 by 90°, the spring knob 34 and the cylindrical helical tension spring 35 can be easily removed from the long slot of the profile template 31, so that the profile template 31 can be easily removed.

[0035] In combination Figure 2As shown, the lever device comprises a sliding screw 41, a lever body 42, a mandrel 43, a radial ball bearing 44, a spring plate 45, and a swing bracket 46, and the sliding screw 41 is arranged along the feed axis direction and can slide along the feed axis direction, specifically, the sliding screw 41 is connected to the machine tool bed 100, and the sliding screw 41 has a spherical surface at one end close to the die plate 31; the lever body 42 is located at the side of the sliding screw 41 close to the die plate 31, and the mandrel 43 is installed on the lever body 42, and the lever body 42 is located at the middle position of the sliding screw 41 and the mandrel 43; one end of the mandrel 43 is connected to the lever body 42 and abuts against the lever body 42, and the other end of the mandrel 43 is provided with the radial ball bearing 44 close to the die plate 31; the end of the lever body 42 close to the sliding screw 41 is connected to the swing bracket 46 fixedly installed on the machine tool bed 100 through the spring plate 45, and the end of the lever body 42 is in contact with the spherical surface of the sliding screw 41. Two cylindrical helical tension springs (not shown in the figure) are arranged on the sliding screw 41, and the sliding screw 41 (including a screw nut and a sliding seat, wherein the sliding screw 41 is connected to the sliding seat through the screw nut) is pulled by the two cylindrical helical tension springs, so that the spherical surface at the end of the sliding screw 41 is in close contact with the mandrel 43 on the lever body 42 through the lever body 42, and then the radial ball bearing 44 on the mandrel 43 is in close contact with the die plate surface of the die plate 31.

[0036] In combination Figure 3 As shown, the signaling device comprises a travel switch base 51 and a micro switch LX52 installed on the bracket 1, and the micro switch LX52 is used to send a signal to the right position when the hydraulic linear cylinder returns to the right position.

[0037] The electrical control system controls the reversing, reciprocating movement, and reciprocating speed of the hydraulic linear cylinder through the hydraulic pump, the electromagnetic valve, and the pipeline system, and controls the periodic reciprocating movement of the hydraulic linear cylinder through the electrical connection of the signaling device and the micro switch LX. It should be noted that the electrical control system, the hydraulic pump, the electromagnetic valve, and the pipeline system are not shown in the figure, and the electrical control system, the hydraulic pump, the electromagnetic valve, and the pipeline system are prior art, for example, the electrical control system can adopt the electrical control system commonly used on the machine tool: numerical control system (NC system), and the present application does not involve improvement of the electrical control system itself.

[0038] In addition, the profile surface on the profile template 31 can be provided with one or two inclined surfaces (not shown in the figure), cooperating with the electrical control system, to realize the periodic automatic micro-feeding, fine-feeding and stop-feeding modes of the sliding screw 41. Specifically, when the profile surface on the profile template 31 has a slightly larger slope, the automatic micro-feeding mode can be realized; when the profile surface on the profile template 31 has a slightly smaller slope, the automatic micro-fine-feeding mode can be realized; and when the profile surface on the profile template 31 has a slope of zero, the stop-feeding mode can be realized.

[0039] The specific implementation principle of the utility model is as follows: when the cylinder body 21 of the hydraulic linear oil cylinder moves from left to right at a certain speed, the profile template 31 is driven to move. When the profile surface on the profile template 31 has a certain slope, the centripetal ball bearing 44 pressed on the profile surface produces a slight up-and-down movement, thereby driving the lever body 42 to produce a slight forward-and-backward movement around the spring plate 45, and then the sliding screw 41 can be pushed to realize micro-feeding through the central shaft 43 on the lever body 42. When the hydraulic linear oil cylinder returns to the right position, the left cylinder cover 22 touches the micro-switch LX52 to send a signal to the control system.

[0040] Moreover, by combining the micro-feeding mechanism with the electrical control system, the micro-feeding mechanism is automatically controlled to work, and the automatic micro-feeding of the axis can be realized, which not only avoids the problem of low accuracy caused by manual errors, but also saves labor and reduces production cost.

[0041] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments. Any technical solution falling within the concept of the utility model belongs to the protection scope of the utility model. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the utility model are also considered as the protection scope of the utility model.

Claims

1. A mechanism for automatic micro-feeding of an axis, characterized in that, Includes a support frame and hydraulic linear cylinders, template devices, lever devices, signaling devices, and electrical control systems located on the support frame, wherein: The hydraulic linear cylinder includes a cylinder body, a left cylinder head, and a right cylinder head. The cylinder body can move left and right on the bracket. The template device is installed above the cylinder body and includes a template plate. One end of the template plate is rotatably connected to the left cylinder head, and the other end is supported above the right cylinder head. The lever device includes a sliding screw, a lever body, and a spindle. The sliding screw is slidably arranged along the feed axis. One end of the lever body is connected to a radial ball bearing near the template via the spindle. The other end of the lever body contacts the sliding screw, and the end near the end portion is connected to a spring plate and a swing bracket. The transmitting device is used to send a signal.

2. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The hydraulic linear cylinder also includes a piston rod, which is a double-outlet piston rod. The double-outlet piston rod divides the inside of the cylinder into two chambers, left and right. By switching the hydraulic oil into the left and right chambers, the cylinder can move to the left or right.

3. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The template device also includes a rotating shaft and an adjusting screw. The left end of the template is rotatably connected to the left cylinder head via the rotating shaft, and the right end is supported above the right cylinder head via the adjusting screw with a ball head.

4. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The template device also includes a spring button and a cylindrical spiral tension spring. One end of the cylindrical spiral tension spring is fixed to the cylinder body, and the other end pulls the template through the spring button.

5. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The template plate has one or two inclined surfaces on its template surface.

6. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The swing bracket is fixed to the machine tool bed.

7. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The end of the sliding screw near the template has a spherical surface, and the lever body is located in the middle of the sliding screw and the mandrel. One end of the lever body is pressed against the spherical surface, and the other end is pressed against the mandrel.

8. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The sliding screw is equipped with two cylindrical helical tension springs for tensioning, so that the spherical surface at the end of the sliding screw is in close contact with the end of the spindle on the lever body.

9. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The signaling device includes a micro switch LX and a limit switch base. The micro switch is mounted on the limit switch base and is used to send a signal to the micro switch LX when the hydraulic linear cylinder returns to the right position.

10. The mechanism for automatic micro-feeding of an axis according to claim 1, characterized in that, The electrical control system controls the reversing, reciprocating motion, and reciprocating speed of the hydraulic linear cylinder through a hydraulic pump, solenoid valve, and pipeline system; and controls the periodic reciprocating motion of the hydraulic linear cylinder through an electrical connection signaling device and a micro switch LX.

Images