Servo hydraulic clamp and machining center equipment

Abstract

The utility model provides a servo hydraulic clamp and machining center equipment, the servo hydraulic clamp is applied to machining of mechanical workpieces, and the servo hydraulic clamp comprises a clamp box body, a transmission structure, a plurality of hydraulic clamping structures, a driving structure and a controller. A worm of the transmission structure is arranged in the clamp box in a penetrating mode, a plurality of worm wheels of the transmission structure are connected with the worm in a meshed mode, and the hydraulic clamping structures correspond to the worm wheels in a one-to-one mode. A servo motor in the driving structure is in driving connection with a speed reducer, and the speed reducer is in driving connection with a worm. According to the servo hydraulic clamp, a plurality of workpieces to be machined can be machined at the same time, the machining efficiency is greatly improved, the clamp does not need to be twisted manually, and the labor intensity is reduced. The servo motor and the speed reducer are controlled by the controller, so that the clamped workpiece to be machined can rotate forwards and backwards according to requirements, the rotation indexing is accurate, the machining precision is high, the controller uniformly controls the clamp to work, lean production is realized, and energy is saved.

Description

Technical Field

[0001] The present application relates to the field of mechanical processing, and in particular to a servo hydraulic clamp and machining center equipment. Background Art

[0002] In the field of mechanical processing, a fixture is usually used to clamp the workpiece to be processed so as to facilitate the machining by a processing tool set.

[0003] At present, two types of clamps are commonly used: the first type is a clamp composed of screws and pressure plates tightened by manual use of pneumatic wrenches to clamp the workpiece to be processed. This method is labor-intensive, requires many clamping times, is time-consuming and labor-intensive to install the clamp to clamp the workpiece to be processed, and the clamped workpiece to be processed can only rotate in one direction, which is not convenient for processing. The second type is to use a hydraulic clamp to clamp the workpiece to be processed, but the current hydraulic clamp usually has only one station, and it is impossible to process multiple workpieces to be processed at the same time, resulting in low processing efficiency. At the same time, the hydraulic pump needs to keep running continuously, which will cause energy waste. Utility Model Content

[0004] In order to solve the current problems of low clamp processing efficiency and high manual labor intensity, the present application provides a servo hydraulic clamp and machining center equipment.

[0005] In a first aspect of the present application, a servo hydraulic clamp is provided, comprising: a clamp housing, a transmission structure, a plurality of hydraulic clamping structures, a drive structure and a controller;

[0006] The transmission structure includes a worm and a plurality of worm wheels, wherein the worm is inserted into the fixture housing, and the plurality of worm wheels are arranged in the fixture housing at intervals, and each of the worm wheels is meshedly connected with the worm;

[0007] The plurality of hydraulic clamping structures are located outside the fixture box and are arranged one-to-one corresponding to the plurality of worm gears. The hydraulic clamping structures are drivingly connected to the corresponding worm gears, and the hydraulic clamping structures are configured to clamp the workpiece to be processed;

[0008] The driving structure comprises a servo motor and a reducer, wherein the servo motor is drivingly connected to the reducer, and the reducer is drivingly connected to the first end of the worm;

[0009] The controller is signal-connected with the hydraulic clamping structure and the driving structure respectively.

[0010] Wherein, the hydraulic clamping structure includes a hydraulic cylinder and a clamping mechanism, the hydraulic cylinder and the clamping mechanism are respectively located on both sides of the worm, and the hydraulic cylinder and the clamping mechanism are located on opposite sides outside the clamp box, and the hydraulic cylinder and the clamping mechanism are drivingly connected.

[0011] Wherein, the clamping mechanism comprises a positioning flange, a pull rod and an end cover;

[0012] A flange protrusion is provided on the first surface of the positioning flange, and the flange protrusion penetrates into the fixture box and is connected to the worm gear transmission. A positioning groove is provided on the second surface of the positioning flange, and the positioning groove matches one end of the workpiece to be processed;

[0013] The first end of the pull rod is inserted into the central hole of the positioning flange and is drivingly connected to the hydraulic cylinder; the second end of the pull rod is fixedly connected to the end cover;

[0014] The clamping mechanism is configured to drive the pull rod through the hydraulic cylinder so that the end cover and the positioning flange clamp the workpiece to be processed.

[0015] Wherein, a clamping groove is arranged at the end of the pull rod away from the hydraulic cylinder, and a buckle is arranged at the end cover, and the end cover is clamped in the clamping groove through the buckle.

[0016] Wherein, the servo hydraulic clamp includes five hydraulic clamping structures, and the transmission structure includes five worm gears.

[0017] The gear ratios of the five worm wheels meshing with the worm are the same.

[0018] Wherein, the reducer comprises a right-angle servo commutation planetary reducer, and the central axis of the right-angle servo commutation planetary reducer is connected to and perpendicular to the output shaft of the servo motor.

[0019] Wherein, the controller includes a PLC control system.

[0020] A second aspect of the present application provides a machining center device, comprising a machining platform, a machining tool set, and a servo hydraulic clamp as described in any one of the first aspects;

[0021] The servo hydraulic clamp is installed on the processing platform; the processing tool group is located above the servo hydraulic clamp and is configured to process the workpiece to be processed clamped by the servo hydraulic clamp.

[0022] Wherein, the machining center equipment also includes a chip liquid injection pipe;

[0023] The cutting fluid injection pipe is disposed adjacent to the processing tool group, and is used for spraying the cutting fluid when the processing tool group processes the workpiece to be processed.

[0024] Compared with the prior art, the present application has the following beneficial effects: the servo hydraulic clamp of the present application is provided with multiple hydraulic clamping structures, which can process multiple workpieces to be processed at the same time, greatly improving the processing efficiency, and no manual hand-tightening of the clamp is required, reducing the labor intensity. The controller controls the servo motor and the reducer, so that the clamped workpiece to be processed can rotate forward and reverse as required, the rotation indexing is accurate, the processing accuracy is high, and the controller uniformly controls the work of the clamp, realizing lean production and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a schematic diagram of a servo hydraulic clamp according to an exemplary embodiment.

[0027] Figure 2 Schematic diagram of the transmission structure and hydraulic clamping structure shown in the embodiment. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other arbitrarily.

[0029] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The present application provides a servo hydraulic clamp and machining center equipment, the servo hydraulic clamp includes a clamp box, a transmission structure, multiple hydraulic clamping structures, a drive structure and a controller. The transmission structure includes a worm and multiple worm wheels, the worm is inserted into the clamp box, and multiple worm wheels are arranged in the clamp box at intervals, and each worm wheel is meshed with the worm. Multiple hydraulic clamping structures are located outside the clamp box and are arranged one by one with multiple worm wheels. The hydraulic clamping structure is connected to the corresponding worm wheels, and the hydraulic clamping structure is configured to clamp the workpiece to be processed. The drive structure includes a servo motor and a reducer, the servo motor is connected to the reducer by driving, and the reducer is connected to the first end of the worm by driving. The controller is signal-connected to the hydraulic clamping structure and the drive structure respectively. The servo hydraulic clamp of the present application is provided with multiple hydraulic clamping structures, which can process multiple workpieces to be processed at the same time, greatly improving the processing efficiency, and there is no need to manually tighten the clamp, reducing the labor intensity. The controller controls the servo motor and reducer, so that the clamped workpiece to be processed can rotate forward and reverse as required, with accurate rotation indexing and high processing accuracy. The controller uniformly controls the work of the fixture, realizing lean production and saving energy.

[0031] According to an exemplary embodiment, Figure 1 As shown, in the first aspect of the present application, a servo hydraulic clamp is provided, including a clamp box 100, a transmission structure 200, a plurality of hydraulic clamping structures 300, a driving structure 400 and a controller.

[0032] like Figure 1 and Figure 2 As shown, the transmission structure 200 includes a worm 210 and a plurality of worm wheels 220. The fixture box 100 adopts a rectangular box structure. The worm 210 is arranged through the fixture box 100, and the plurality of worm wheels 220 are arranged at intervals in the fixture box 100. Inside the fixture box 100, each worm wheel 220 is meshed and connected with the worm 210.

[0033] like Figure 1As shown, the hydraulic clamping structure 300 is used to clamp the workpiece 900 to be processed. In this embodiment, the workpiece 900 to be processed is a steering gear housing structure with a mounting hole. The present application does not limit the specific structure of the workpiece to be processed, and the actual production shall prevail. The servo hydraulic clamp of the present application has a wide range of applicability for mechanical processing workpieces. Multiple hydraulic clamping structures 300 are located outside the clamp box 100, and are arranged one-to-one with multiple worm gears 220. The hydraulic clamping structures 300 are connected to the corresponding worm gears 220 in transmission. In this embodiment, the servo hydraulic clamp includes five hydraulic clamping structures 300, and the corresponding transmission structure 200 includes five worm gears 220, so that the servo hydraulic clamp of the present application can clamp five workpieces 900 to be processed at the same time, realizing the simultaneous processing of multiple workpieces to be processed at multiple stations, greatly improving the processing efficiency. The selection of five hydraulic clamping structures 300 is only an example. The present application does not limit the number of hydraulic clamping structures, and the actual production needs shall prevail.

[0034] In this embodiment, the five worm wheels 220 meshing with the worm 210 have the same gear ratio, so that the servo hydraulic clamp can simultaneously clamp five identical workpieces 900 to be processed, and realize simultaneous processing of multiple identical workpieces to be processed, thereby improving processing efficiency. In some other embodiments, the gear ratios of each worm wheel 220 meshing with the worm 210 in the multiple worm wheels 220 can be different, so that the multiple workpieces to be processed clamped by the servo hydraulic clamp rotate at different angles when rotating, which is convenient for simultaneously processing workpieces to be processed of different sizes and shapes, and can realize simultaneous processing of multiple different workpieces to be processed.

[0035] like Figure 2 As shown, the hydraulic clamping structure 300 includes a hydraulic cylinder 310 and a clamping mechanism 320, which are respectively located on both sides of the worm 210, and the hydraulic cylinder 310 and the clamping mechanism 320 are also located on opposite sides of the outside of the clamp box 100, and the hydraulic cylinder 310 and the clamping mechanism 320 are drivingly connected. The hydraulic cylinder 310 uses an oil plate type thin hydraulic cylinder, which does not require oil pipe connection, and the oil circuit is built in the hydraulic cylinder 310, which has a simple structure and less pipeline interference.

[0036] like Figure 2As shown, the clamping mechanism 320 includes a positioning flange 321, a pull rod 322 and an end cover 323. A flange protrusion 3211 is provided on the first surface of the positioning flange 321, and the flange protrusion 3211 penetrates into the fixture box 100 and is connected to the worm gear 220 in a driving manner. A positioning groove 3212 is provided on the second surface of the positioning flange 321, and the positioning groove 3212 matches one end of the workpiece 900 to be processed, so that one end of the workpiece 900 to be processed can be accommodated in the positioning groove 3212. The pull rod 322 is a long rod structure, and the first end of the pull rod 322 is inserted into the central hole of the positioning flange 321, and is connected to the hydraulic cylinder 310 in a driving manner. The second end of the pull rod 322 is fixedly connected to the end cover 323. In this embodiment, a clamping groove 3221 is provided on the second end of the pull rod 322, and a buckle (not shown in the figure) is provided on the end cover 323. The end cover 323 is clamped with the second end of the pull rod 322 through the clamping groove 3221 and the buckle. The end cap 323 can be configured to match the workpiece 900 of different shapes and sizes to be processed, so as to adapt to different types of workpieces 900 to be processed. The clamping mechanism 320 drives the pull rod 322 through the hydraulic cylinder 310, so that the end cap 323 and the positioning flange 321 clamp the workpiece 900 to be processed together, thereby completing the clamping of the workpiece 900 to be processed.

[0037] like Figure 1 As shown, the drive structure 400 includes a servo motor 410 and a reducer 420, the servo motor 410 is connected to the reducer 420 by driving, and the reducer 420 is connected to the drive of the worm 210. In this embodiment, the servo motor 410 uses a programmable servo motor, and the reducer 420 uses a right-angle servo reversing planetary reducer. The central axis of the right-angle servo reversing planetary reducer is connected to the output shaft of the programmable servo motor, and the two are arranged vertically. Through the above arrangement, the servo hydraulic clamp of the present application has a compact structure, a small volume, and a small space occupation. In the present application, the servo motor 410 drives the reducer 420 to drive the worm 210 to rotate to drive each worm wheel 220 to rotate, so that under the drive of the servo motor 410, the clamped workpiece 900 to be processed can be rotated forward and backward as required and without restriction, and the rotation indexing is accurate, and the processing accuracy is high. The servo hydraulic clamp of the present application can be used to process polygonal and irregular workpieces to be processed. Only one clamping is performed to complete the processing of each hole and each surface around the workpiece to be processed, thereby improving the degree of automation of production and reducing labor intensity.

[0038] The controller (not shown in the figure) is connected to the hydraulic clamping structure 300 and the driving structure 400 by signals, respectively, for signal control of the servo motor 410 and the hydraulic cylinder 310. The controller may be a PLC control system (Programmable Logic Controller), which has the advantages of high reliability, easy programming, flexible configuration and fast operation speed. By setting the controller signal to control the servo motor 410 and the hydraulic cylinder 310, the hydraulic clamping structure 300 can be controlled to clamp the workpiece 900 to be processed, and then the servo motor 410 can be controlled to drive the worm 210 to rotate, so that the workpiece 900 to be processed can be rotated so as to facilitate processing of all sides thereof.

[0039] The second aspect of this application is as follows Figure 1 As shown, a machining center device is provided, including a machining platform 800, a machining tool group, and the servo hydraulic clamp as described in the first aspect. The servo hydraulic clamp is installed on the machining platform 800, the machining tool group (not shown in the figure) is located above the servo hydraulic clamp, and the machining tool group is used to process the workpiece 900 to be processed clamped by the servo hydraulic clamp.

[0040] In some embodiments, the machining center equipment also includes a chip fluid injection pipe (not shown in the figure), which is arranged adjacent to the machining tool group and is used to spray chip fluid when the machining tool group processes the workpiece 900 to be processed, so as to cool and lubricate the machining tool group during the machining process.

[0041] In summary, the servo hydraulic clamp of the present application uses a servo motor to drive a right-angle servo reversing planetary reducer, which is connected to a worm to rotate five worm gears. After the angle rotation is completed, the hydraulic cylinder drives the clamping mechanism to clamp the workpiece to be processed for precision production and processing. It can realize equipment programming and automatic hydraulic clamping and releasing. It has the advantages of high precision, good stability, simple and compact structure, etc., and can greatly improve processing efficiency and processing accuracy.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A servo hydraulic clamp, characterized in that: include: A fixture box, a transmission structure, multiple hydraulic clamping structures, a drive structure and a controller; The transmission structure includes a worm and a plurality of worm wheels, wherein the worm is inserted into the fixture housing, and the plurality of worm wheels are arranged in the fixture housing at intervals, and each of the worm wheels is meshedly connected with the worm; The plurality of hydraulic clamping structures are located outside the fixture box and are arranged one-to-one corresponding to the plurality of worm gears. The hydraulic clamping structures are drivingly connected to the corresponding worm gears, and the hydraulic clamping structures are configured to clamp the workpiece to be processed; The driving structure comprises a servo motor and a reducer, wherein the servo motor is drivingly connected to the reducer, and the reducer is drivingly connected to the first end of the worm; The controller is signal-connected with the hydraulic clamping structure and the driving structure respectively.

2. The servo hydraulic clamp according to claim 1, characterized in that: The hydraulic clamping structure comprises a hydraulic cylinder and a clamping mechanism, wherein the hydraulic cylinder and the clamping mechanism are respectively located on two sides of the worm, and the hydraulic cylinder and the clamping mechanism are located on two opposite sides outside the clamp box, and the hydraulic cylinder and the clamping mechanism are drivingly connected.

3. The servo hydraulic clamp according to claim 2, characterized in that: The clamping mechanism includes a positioning flange, a pull rod and an end cover; A flange protrusion is provided on the first surface of the positioning flange, and the flange protrusion penetrates into the fixture box and is connected to the worm gear transmission. A positioning groove is provided on the second surface of the positioning flange, and the positioning groove matches one end of the workpiece to be processed; The first end of the pull rod is inserted into the central hole of the positioning flange and is drivingly connected to the hydraulic cylinder; the second end of the pull rod is fixedly connected to the end cover; The clamping mechanism is configured to drive the pull rod through the hydraulic cylinder so that the end cover and the positioning flange clamp the workpiece to be processed.

4. The servo hydraulic clamp according to claim 3, characterized in that: The end of the pull rod away from the hydraulic cylinder is provided with a clamping groove, and the end cover is provided with a buckle, and the end cover is clamped in the clamping groove through the buckle.

5. The servo hydraulic clamp according to claim 1, characterized in that: The servo hydraulic clamp includes five hydraulic clamping structures, and the transmission structure includes five worm gears.

6. The servo hydraulic clamp according to claim 5, characterized in that: The five worm wheels mesh with the worm at the same gear ratio.

7. The servo hydraulic clamp according to claim 1, characterized in that: The reducer comprises a right-angle servo-commutated planetary reducer, wherein a central axis of the right-angle servo-commutated planetary reducer is connected to and perpendicular to an output axis of the servo motor.

8. The servo hydraulic clamp according to claim 1, characterized in that: The controller includes a PLC control system.

9. A machining center equipment, characterized in that: It comprises a processing platform, a processing tool set, and a servo hydraulic clamp as described in any one of claims 1 to 8; The servo hydraulic clamp is installed on the processing platform; the processing tool group is located above the servo hydraulic clamp and is configured to process the workpiece to be processed clamped by the servo hydraulic clamp.

10. The machining center equipment according to claim 9, characterized in that: The machining center equipment also includes a chip liquid injection pipe; The cutting fluid injection pipe is disposed adjacent to the processing tool group, and is used for spraying the cutting fluid when the processing tool group processes the workpiece to be processed.

Images