CN207746820U - A kind of ultrasonic wave added ELID cross grinding lathes - Google Patents

Abstract

The utility model discloses a kind of ultrasonic wave added ELID cross grinding lathes, including lathe bed, metallic bond ultrasound mill, slurry nozzle, carrying disk and ELID electrolysis electrodes.The ELID electrolysis electrodes include electrolysis electrode power supply, motor, guide rail and electrode plate, the electrode plate is arranged between two adjacent carrying disks, the electrode plate is mounted on motor-controlled guide rail, pass through the distance between the bottom of motor coordination electrode plate and the metallic bond ultrasound mill, the anode of the electrolysis electrode power supply is connected with metallic bond ultrasound mill and as anode, the cathode of the electrolysis electrode power supply is connected with electrode plate and as cathode；By adjusting the voltage and current of electrolysis electrode power supply, the electrolytic speed of the metallic bond ultrasound mill is controlled.It has the following advantages that：Supersonic vibration assistant grinding technology and ELID assistant grinding technologies are combined together, metallic bond ultrasound mill is made to remain kilter, the processing efficiency and machining accuracy of part can be greatly improved.

Description

An Ultrasonic Assisted ELID Face Grinding Machine Tool

technical field

The utility model relates to the field of processing hard and brittle materials, in particular to an ultrasonic-assisted ELID (on-line electrolytic dressing grinding wheel) end face grinding machine tool.

Background technique

Due to their excellent mechanical properties, dielectric properties and chemical stability, hard, brittle and difficult-to-machine materials such as optical glass, artificial crystals, and ceramics are widely used in aerospace, national defense, automotive, information, machining and other fields. However, these materials have high hardness, high brittleness, and difficult processing, so it is very challenging to realize efficient and precise processing of them. As a commonly used precision machining method, grinding is often used for precision machining of hard and brittle materials. In the grinding process, the processing efficiency and processing accuracy are contradictory. In order to improve the grinding efficiency, it is necessary to use coarser abrasive grains, and the coarser abrasive grains will result in poorer machining accuracy. In order to improve the surface processing accuracy, it is necessary to use Use smaller particle size abrasive grains, which will affect the grinding efficiency.

In order to improve the efficiency and precision of grinding hard and brittle materials, people have proposed ultrasonic-assisted grinding methods, such as the utility model patent "A Large-Sized Radial Ultrasonic-Assisted Face Grinding Disc" that was proposed by the applicant earlier and has been authorized. "(ZL201510492598.5) and "A Large-Size Axial Ultrasonic Assisted Face Grinding Disc" (ZL201510492638.6). Applying ultrasonic vibration on the basis of ordinary grinding, the introduction of ultrasonic vibration can not only improve the processing efficiency of hard and brittle materials, but also improve the grinding accuracy, especially in the process of fine-grained diamond grinding wheel grinding, the introduction of ultrasonic vibration can Effectively solve the clogging problem of fine-grained grinding wheels, so as to achieve the purpose of improving precision and efficiency. However, the fine-grained grinding wheel is also easy to wear during the processing process and requires frequent dressing, which will affect production efficiency.

Aiming at the problem that metal-bonded diamond grinding wheels are easy to be blocked and require frequent dressing, Omori, an expert in the field of grinding, has developed a new grinding technology for online electrolytic dressing of grinding wheels (ELID). Through online dressing of grinding wheels, fine-grained diamond The grinding wheel remains sharp all the time. So as to achieve the purpose of improving grinding efficiency and grinding precision.

Ultrasonic vibration assisted grinding technology and grinding wheel on-line dressing grinding technology use different principles to achieve the purpose of improving grinding accuracy and grinding efficiency. However, if these two technologies can be combined to form an ultrasonic-assisted ELID grinding technology, it is bound to have a better effect on improving grinding efficiency and grinding accuracy.

Utility model content

The utility model provides an ultrasonic-assisted ELID end face grinding machine tool, which overcomes the shortcomings of the ultrasonic-vibration-assisted grinding technology in the background technology.

The technical solution adopted by the utility model to solve its technical problems is:

An ultrasonic-assisted ELID end face grinding machine tool, including a bed, a metal bond ultrasonic grinding disc, a plurality of grinding liquid nozzles, a plurality of loading discs and a plurality of ELID electrolytic electrodes; the bed has a main shaft, the main shaft and metal The bonded ultrasonic grinding disc is connected and drives the metal bonded ultrasonic grinding disc to rotate around the axis of the main shaft through the main shaft; the workpiece that is pressed on the surface of the metal bonded ultrasonic grinding disc is mounted on the carrier disc, and the carrier disc is located on the metal bonded ultrasonic grinding disc. above and can rotate; the abrasive liquid nozzle controls the electrolytic abrasive liquid to be evenly sprayed between the workpiece and the metal bond ultrasonic grinding disc; the ELID electrolytic electrode includes an electrolytic electrode power supply, a motor, a guide rail and an electrode plate, and the electrode plate is arranged on the adjacent The electrode plate is installed on the guide rail controlled by the motor, and the distance between the bottom of the electrode plate and the metal bond ultrasonic grinding disc is controlled by the motor, and the positive pole of the electrolysis electrode power supply and the metal bond ultrasonic The grinding disc is connected and used as an anode, and the negative pole of the electrolytic electrode power supply is connected with the electrode plate and used as a cathode.

In one embodiment: the plurality of object-carrying disks are evenly spaced circumferentially on the metal-bonded ultrasonic grinding disk.

In one embodiment: the number of the object trays is equal to the number of ELID electrolysis electrodes, and the above-mentioned one ELID electrolysis electrode is arranged between every two adjacent object trays.

In one embodiment: the metal-bonded ultrasonic grinding disc is a conductive metal-bonding grinding disc, and the metal-bonding grinding disc is a copper-based metal-bonding grinding disc, a nickel-based metal-bonding grinding disc or a tungsten-based metal-bonding grinding disc.

In one embodiment: the rotation axis of the metal-bonded ultrasonic grinding disc and the rotation axis of the loading disc are arranged vertically, and the up and down movement of the electrode plate relative to the bed is controlled by a motor and a guide rail.

In one embodiment: distance measuring sensors are installed on both sides of the electrode plate, and the distance measuring sensor detects the distance between the bottom of the electrode plate and the metal bond ultrasonic grinding disc.

Compared with the background technology, this technical solution has the following advantages:

The utility model combines the ultrasonic vibration assisted grinding technology and the ELID assisted grinding technology together, so that the metal bond ultrasonic grinding disc is always kept in good condition, and solves the problems of complicated and difficult dressing of the grinding disc, and the grinding disc is easy to be blocked, and can produce the following Technical effect: First, it can be used for end face grinding, grinding and polishing, which can realize ultra-precision grinding of workpieces, and can realize large-scale end face grinding, grinding and polishing of parts, which can greatly improve the processing efficiency and processing efficiency of parts. precision. Second, when the grinding disc is in contact with the grinding surface of the workpiece, ultrasonic cavitation of the electrolyte will occur, which can effectively promote the actual effect of the grinding disc dressing.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic structural diagram of an ultrasonic-assisted ELID end face grinding machine tool.

Fig. 2 is a structural schematic diagram of an ELID electrolysis electrode.

Fig. 3 is a schematic diagram of the structure of the polishing liquid nozzle.

Detailed ways

As shown in Figure 1, an ultrasonic-assisted ELID end face grinding machine tool includes a vertical bed 1, a metal bond ultrasonic grinding disc 2, a plurality of grinding liquid nozzles 3, three ELID electrolytic electrodes 4 and three loads The disk 5 is provided with the above-mentioned ELID electrolysis electrode between every two adjacent object loading disks. The vertical bed 1 has an outer cover on the top and a vertically arranged main shaft protruding from the upper cover, the main shaft is connected to the metal bond ultrasonic grinding disc 2, and the metal bond ultrasonic grinding disc 2 is driven around the axis of the main shaft by the main shaft Rotation; the loading disc 5 is used to mount the workpiece, the three loading discs 5 are evenly distributed above the metal bond ultrasonic grinding disc 2 and can rotate, the rotation axis is vertically arranged, and the workpiece is pressed on the metal bond The surface of the ultrasonic abrasive disc 2; the plurality of abrasive liquid nozzles 3 are evenly distributed on the outer cover of the vertical bed 1 to control the electrolytic abrasive liquid to be evenly sprayed between the workpiece and the metal bond ultrasonic abrasive disc 2.

The ELID electrolysis electrode 4 includes an electrolysis electrode power supply 9, a motor 7, a guide rail 6 and an electrode plate 8, the electrode plate 8 is arranged between two adjacent loading discs 2, and the electrode plate 8 is installed on the guide rail controlled by the motor 7 6, the electrode plate 8 is controlled to move up and down by the motor 7 and the guide rail 8, and the distance between the bottom of the electrode plate 8 and the metal bond ultrasonic grinding disc 2 is controlled. The positive electrode of the electrolysis electrode power supply 9 is connected to the metal bond ultrasonic grinding disc 2 Connected and used as an anode, the negative pole of the electrolysis electrode power supply 9 is connected to the electrode plate 8 and used as a cathode; by adjusting the voltage and current of the electrolysis electrode power supply, the electrolysis speed of the metal bond ultrasonic grinding disc is controlled, so that the metal bond ultrasonic grinding disc Always keep in good condition to achieve ultra-precision grinding of workpieces. If the motor 7 is a stepping motor, the guide rail 6 is vertically arranged, and the transmission connection between the motor and the electrode plate is as follows: a fixed plate 10 fixed to the bed, the motor 7 is fixed on the fixed plate 10, The fixed plate 10 and the electrode plate are spaced up and down. If the guide rail includes a screw mandrel, a rotatable connection relationship is formed between the electrode plate 8 and the screw mandrel. The fixed plate is provided with a rotatable nut, and the nut is screwed to the screw mandrel. , the motor drives the connecting nut, the motor drives the nut to rotate, the nut rotates to drive the screw rod to move up and down, and the screw rod moves up and down to drive the electrode plate 8 to move up and down.

Further, distance measuring sensors are installed on the left and right sides of the electrode plate 8, and the distance measuring sensors detect the distance between the bottom of the electrode plate and the metal bond ultrasonic grinding disc.

The metal-bonded ultrasonic grinding disc 2 is a conductive metal-bonding grinding disc, such as a copper-based metal-bonding grinding disc, a nickel-based metal-bonding grinding disc or a tungsten-based metal-bonding grinding disc. The abrasive liquid nozzles are evenly distributed on the outer cover of the vertical bed, and the arrangement and quantity of the abrasive liquid nozzles can be adjusted according to actual processing requirements.

During use, the workpiece is placed on the surface of the grinding disc under a certain pressure, and the grinding disc rotates under the drive of the motor spindle, and the grinding block on the grinding disc vibrates ultrasonically under the action of the ultrasonic power supply. At the same time, under the action of the electrolytic power supply , The electrolytic reaction occurs between the electrode plate and the grinding disc through the electrolyte, and the online dressing of the grinding disc is realized.

The above is only a preferred embodiment of the utility model, so the scope of implementation of the utility model cannot be limited accordingly, that is, the equivalent changes and modifications made according to the patent scope of the utility model and the contents of the specification should still belong to this utility model. within the scope of utility models.

Claims (6)

1. a kind of ultrasonic wave added ELID cross grinding lathes, it is characterised in that：It is ground including a lathe bed, a metallic bond ultrasound Disk, multiple slurry nozzles, multiple carrying disks and multiple ELID electrolysis electrodes；The lathe bed has main shaft, the main shaft and metal knot Mixture ultrasound mill connects and drives metallic bond ultrasound mill to be rotated around main-shaft axis by main shaft；Attaching on the carrying disk Have a workpiece for being crushed on the metallic bond ultrasound disc surface, the carrying disk be located above the metallic bond ultrasound mill and It can rotation；Slurry nozzle control electrolytic polishing liquid is uniformly sprayed onto between workpiece and the metallic bond ultrasound mill；It should ELID electrolysis electrodes include electrolysis electrode power supply, motor, guide rail and electrode plate, the electrode plate be arranged in two adjacent carrying disks it Between, which is mounted on motor-controlled guide rail, super by the bottom and the metallic bond of motor coordination electrode plate The anode of the distance between sound mill, the electrolysis electrode power supply is connected with metallic bond ultrasound mill and as anode, the electricity The cathode of solution electrode supply is connected with electrode plate and as cathode.

2. a kind of ultrasonic wave added ELID cross grinding lathes according to claim 1, it is characterised in that：Multiple carrying disk Circumferential uniform intervals are located on metallic bond ultrasound mill.

3. a kind of ultrasonic wave added ELID cross grinding lathes according to claim 1, it is characterised in that：The carrying disk number It is equal with ELID electrolysis electrode numbers, and an above-mentioned ELID electrolysis electrode is equipped between each adjacent two carrying disk.

4. a kind of ultrasonic wave added ELID cross grinding lathes according to claim 1, it is characterised in that：The metallic bond Ultrasonic mill is metallic bond mill that can be conductive, which is copper base metal bonding agent mill, Ni-based gold Belong to bonding agent mill or tungsten Base Metal bonding agent mill.

5. a kind of ultrasonic wave added ELID cross grinding lathes according to claim 1, it is characterised in that：The metallic bond The pivot center of ultrasonic mill, the rotation axis of carrying disk are all arranged vertically, by motor and guide rail coordination electrode plate with respect to bed Body moves up and down.

6. a kind of ultrasonic wave added ELID cross grinding lathes according to claim 1, it is characterised in that：The electrode plate both sides It is fitted with distance measuring sensor, the distance between the bottom of distance measuring sensor detecting electrode plate and metallic bond ultrasound mill.