CN111113161A - Device and method for precisely machining inner circle of lead-containing MCP glass leather material tube - Google Patents
Device and method for precisely machining inner circle of lead-containing MCP glass leather material tube Download PDFInfo
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- CN111113161A CN111113161A CN201911318645.9A CN201911318645A CN111113161A CN 111113161 A CN111113161 A CN 111113161A CN 201911318645 A CN201911318645 A CN 201911318645A CN 111113161 A CN111113161 A CN 111113161A
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- grinding head
- rotating rod
- lead
- inner circle
- glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
- B24B29/06—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction
- B24B29/08—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces for elongated workpieces having uniform cross-section in one main direction the cross-section being circular, e.g. tubes, wires, needles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/35—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
- B24B5/40—Single-purpose machines or devices for grinding tubes internally
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/50—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground, e.g. strings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention provides a device and a method for precisely processing the inner circle of a lead MCP glass leather material tube, wherein the device comprises a lathe bed, a working table, a first motor, a synchronous rotating shaft box, a rotating rod frame, a rotating rod clamp, a rotating rod and a grinding head; wherein, the rotating rod, the grinding head and the lead-containing MCP glass leather material tube share the same central axis and are parallel to the working table surface; the torque force output to the rotating rod frame through the second motor drives the rotating rod frame to reciprocate along the direction of a track arranged on the working table surface, and the track is positioned below the rotating rod and is parallel to the central axis. The invention can finely adjust the levelness of the rotating rod, so that the rotating rod and the grinding head keep coaxial lines with the leather pipe to be processed with the same height, the stability of the rotating rod of the grinding head in the feeding motion process is improved, and the accuracy of the precision processing of the inner circle is improved; and adopt double-deck collet chuck, both guaranteed the stability of outside clamping, can effectively avoid simultaneously containing lead the mar that the outer surface of glass brought because of frock clamp, reduce glass surface microcrack and prevent to explode and split.
Description
Technical Field
The invention relates to the field of Micro Channel Plates (MCP), in particular to a device and a method for precisely processing an inner circle of a lead-containing MCP glass leather material tube.
Background
Microchannel plates (MCPs) are a two-dimensional vacuum electron multiplier in the form of a thin sheet structure with millions of microporous electron multiplier devices grouped together in parallel arrays, are sensitive to electrons, ions, accelerated neutral particles, ultraviolet photons, and X-rays, and are widely used in the fields of image intensifiers, displays, space science, and analytical instruments.
In the conventional preparation process of the microchannel plate, an alkali lead silicate coated glass tube and a core rod matched with the alkali lead silicate coated glass tube are prepared and drawn into a monofilament at high temperature by depending on a glass multi-fiber drawing technology (GMD), and the multichannel array type sheet is manufactured by a series of processes such as screen arrangement, slicing, polishing, corrosion and the like.
At present, the precision machining of the inner circle of a high-precision glass tube (a lead-containing MCP glass leather material tube) mainly comprises a high-temperature precision drawing technology and a precision mechanical shaping technology, wherein the former belongs to a hot machining process, and the latter belongs to a cold machining process. The precision of the prefabricated rod of the high-temperature precision drawing process is high, and the precision requirement of the precision mechanical shaping process on the prefabricated rod is low. The former has the disadvantages of high technical difficulty, complex process and high equipment requirement. As for the geometric accuracy of the product, the two indexes of inner diameter, outer diameter and out-of-roundness are almost the same. However, at present, for a slender (especially ultra-long, length exceeding 500mm) lead MCP glass leather material tube, when a traditional numerical control machine tool is used for processing, the tube is easy to break and difficult to reach the standard in controlling the surface roughness of the inner wall of the tube, and the tube which can reach the micron level is less, so that the large-scale production of cutting and forming the inner circular tube of the lead MCP glass leather material tube is difficult to realize.
Disclosure of Invention
The invention aims to provide an in-tube round precision machining device of a lead-containing MCP glass leather material tube, which is suitable for the precision machining of an ultra-long lead-containing MCP glass leather material tube (more than 500mm), and comprises the following components:
a bed body;
a table surface located on and supported by the bed;
the first motor is arranged at one end above the working table top;
the synchronous rotating shaft box is arranged at the other end above the working platform, and the synchronous rotating shaft box clamps a lead-containing MCP glass leather material pipe to be processed and can drive the lead-containing MCP glass leather material pipe to rotate at a set rotating speed;
a rotating rod frame arranged between the first motor and the synchronous rotating axle box;
a rotating rod clamp positioned between the rotating rod frame and the synchronous rotating axle box;
the rotating rod is supported on the rotating rod frame and the rotating rod clamp and faces the synchronous rotating shaft box, the torsion of the first motor is output to one end of the rotating rod to drive the rotating rod to rotate around the central axis, and the other end of the rotating rod is provided with a quick clamping mechanism;
the grinding head is detachably clamped in the quick clamping mechanism;
wherein, the rotating rod, the grinding head and the lead-containing MCP glass leather material tube share the same central axis and are parallel to the working table surface;
the second motor is further arranged below the working table, the torque force of the second motor is output to the rotating rod frame to drive the rotating rod frame to reciprocate along the track direction arranged on the working table, and the track is located below the rotating rod and parallel to the central axis.
Preferably, the synchronous rotation axle box is provided with a box body, a third motor, a driving mechanism and chucks, two chucks are supported on the side wall inside the box body through a pivot mechanism and can be driven to rotate by the third motor, the chucks are arranged on the chucks and driven by the driving mechanism to realize clamping or loosening, a pair of collet mechanisms for clamping the lead MCP glass leather material pipe are further arranged in the synchronous rotation axle box, and clamping is realized by the jaws, so that the collet mechanisms and the clamped lead MCP glass leather material pipe synchronously rotate under the driving of the third motor.
Preferably, the collet mechanism comprises a stainless steel collet and a nylon collet which forms a nested fit with the stainless steel collet, the nylon collet is positioned in the stainless steel collet, and the lead MCP-containing glass leather tube is clamped by the nylon collet.
Preferably, the stainless steel collet chuck and the stainless steel collet chuck are circular in cross section, and at least one annular groove is further arranged on the surface of one end of the stainless steel collet chuck along the circumferential direction for clamping the jaws.
Preferably, the rotating rod clamp is provided with a base and a roller carrier arranged on the base, the roller carrier comprises an annular sleeve and a plurality of rollers arranged inside the annular sleeve, the rollers are uniformly arranged in the circumferential direction, and each roller is matched with an adjusting knob which can be adjusted from the outside and penetrates through the annular sleeve.
Preferably, when the rotating rod is supported between the rotating rod frame and the rotating rod clamp, the rotating rod, the grinding head and the lead-containing MCP glass leather material tube are coaxial and parallel to the working table surface through fine adjustment of an adjusting knob.
Preferably, the grinding head is one of a metal grinding head, a resin grinding head and a wool felt grinding head, and the different grinding heads are adopted in different working procedures in the pipe inner circle machining process of the same lead-containing MCP glass leather material pipe.
Preferably, the wool felt grinding head is provided with a groove on the outer circumference in the direction from the top to the tail of the grinding head.
Preferably, the grooves arranged on the wool felt grinding head are spiral grooves or inclined grooves along the processing direction.
The invention also provides a method for precisely machining the inner circle of the lead-containing MCP glass leather material tube, which comprises the following steps:
3, processing the inner circle, specifically, performing multiple cutting by using a resin grinding head, wherein the multiple cutting is performed by using different resin grinding heads, the mesh number of the resin grinding head is increased from 3000 meshes to 5000 meshes, cracks with different depths are eliminated by performing multiple cutting processing on the resin grinding heads with different mesh numbers, and the processing time is controlled to be 2.5-3.5H;
and 4, fine polishing, namely polishing by using a wool felt grinding head to ensure that the roughness of the inner circle surface of the lead-containing MCP glass leather material tube reaches 0.2um, wherein the polishing solution and the glass fine powder in the cutting process are led out through a groove arranged on the outer circumference of the wool felt grinding head in the direction from the top to the tail of the grinding head in the polishing process.
Thus, the invention has significant advantages over the prior art:
1) the rotating rod clamp matched with the rotating rod can finely adjust the levelness of the rotating rod, so that the rotating rod and the grinding head keep coaxial lines with the workpiece to be machined (a leather material pipe) in the same height, the use stability of the grinding head rotating rod in the feeding motion process is improved, and the accuracy of the inner circle precision machining numerical control device is improved;
2) the lead-containing glass leather material tube to be processed is very easy to crack, so that the tool clamp adopts double layers, the stability of external clamping is ensured, and meanwhile, the glass leather material tube is directly clamped by the nylon collet chuck in the tool clamp, so that scratches on the outer surface of the lead-containing glass caused by the tool clamp can be effectively avoided, and the generation of microcracks on the surface of the glass is reduced;
3) the grinding head is connected with the grinding head rotating rod through the quick clamp, so that the efficiency of quickly changing the head in the machining process is improved, the stability of the grinding head in the grinding process is improved, and the grinding head is suitable for precisely machining the inner circle of the slender electronic glass tube;
4) the head of the grinding head is in a round-head cone shape, so that the contact area with the inner circle of the glass is larger, and the working efficiency is higher;
5) because the processed lead-containing glass leather material pipe is longer and the depth of the inner circle is large, the peripheral surface of the wool felt grinding head used by the invention is provided with the grooves, so that the polishing solution and the glass fine powder are led out timely, and the influence on the polishing process is reduced.
It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.
The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.
Drawings
The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of an in-tube round precision machining device for a lead MCP-containing glass leather material tube.
Fig. 2a-2b are schematic views of the collet of the present invention, fig. 2a is a schematic cross-sectional view, and fig. 2b is a side view.
Fig. 3 is a schematic view of a rotating rod clamp of the present invention.
Figure 4 is a schematic view of a wool felt sanding head of the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
Referring to fig. 1 to 4, the in-tube inner circle precision machining device for the lead-containing MCP glass skin material tube according to the exemplary embodiment of the present invention is suitable for the precision machining of an ultra-long lead-containing MCP glass skin material tube (over 500mm), is beneficial to the control of the inner circle precision size of a long and thin glass skin material tube, has a precision controllable within ± 0.01mm, and is suitable for the batch machining production of precision glass tubes.
With reference to the figures, the device for precisely machining the inner circle of the lead-containing MCP glass leather material tube comprises: the grinding machine comprises a machine body 1, a working table surface 2, a first motor 3, a synchronous rotation axle box 4, a rotating rod frame 5, a rotating rod clamp 6, a rotating rod 7, a grinding head 8, a second motor 9 and a track 10.
The bed 1 is supported on a horizontal floor as a base support of the entire processing apparatus.
The upper part of the bed is provided with a working table surface 2 supported by the bed.
And the first motor 3 is arranged at one end above the working table surface and is used for driving the rotating rod and the grinding head to synchronously rotate through rotary output. Preferably, the first motor 3 is connected to the rotation rod 7 through a speed reducer, driving it in rotation. The first electric machine 3 is preferably an adjustable speed ac machine.
And the synchronous rotating axle box 4 is arranged at the other end above the working platform, the inside of the synchronous rotating axle box 4 clamps the lead-containing MCP glass leather material pipe to be processed, and the synchronous rotating axle box can drive the lead-containing MCP glass leather material pipe to rotate at a set rotating speed. Therefore, the lead-containing MCP glass leather material pipe is driven by the third motor to rotate automatically in the machining process.
Referring to fig. 1, a rotating shaft bracket 5 is disposed between the first motor and the synchronous rotation shaft housing; a turret clamp 6 between the turret 5 and the synchronous rotation axlebox 4. In this way, the turret and grinding head are supported between the first motor and the synchronous rotary axle box by means of the turret frame 5 and the turret clamp 6.
A swivel lever 7 is supported on the swivel bracket and swivel clamp and extends towards the synchronous rotating axlebox. The torsion of the first motor is output to one end of the rotating rod 7 through the speed reducer to drive the rotating rod to rotate around the central axis, and the other end of the rotating rod is provided with a quick clamping mechanism. The quick clamp mechanism can be selected from a sleeve type quick-change chuck or a three-jaw chuck, and particularly preferably adopts a quick clamp with a single-hand quick-change mode.
And the grinding head 8 is detachably clamped into the quick clamping mechanism. For example, we have in this embodiment a hex shank for each grater with a quick clamp to allow for quick assembly to the spindle.
Wherein, the rotating rod 7, the grinding head 8 and the lead-containing MCP glass leather material tube share the same central axis and are parallel to the working table surface.
A second motor 9 is further arranged below the working table surface 2, the torque force of the second motor 9 is output to the rotating rod frame 5, the rotating rod frame is driven to reciprocate along the direction of a track 10 arranged on the working table surface, and the track 10 is located below the rotating rod and is parallel to the central axis.
Preferably, the synchronous rotation axle box has a box body, a third motor, a driving mechanism and a chuck, the box body is a square box body, the box body is composed of a bottom plate, a side plate and a top plate, and the side plate facing the direction of the grinding head is provided with an opening to allow the grinding head to extend into. The top plate of the upper part is designed into a structure which can be turned and opened, and the two chucks are supported on the side wall of the inner part of the box body through a pivot mechanism (a shaft and a bearing) and can be driven to rotate by a third motor.
The chuck is provided with a plurality of clamping jaws, the clamping jaws are driven by a driving mechanism to clamp or release, and the driving mechanism can select an air cylinder or a hydraulic cylinder to realize accurate clamping and releasing control.
And a pair of collet mechanisms for clamping the lead MCP glass leather material pipe are further arranged in the synchronous rotation axle box, as shown in fig. 2a and 2b, the clamping is realized by the jaws, so that the collet mechanisms and the clamped lead MCP glass leather material pipe synchronously rotate under the driving of a third motor.
The third motor 13 is provided outside the synchronous rotation axle box, and transmits torque to the chuck through a torque conversion device such as a speed reducer to drive rotation.
A drive mechanism 14, such as a pneumatic or hydraulic cylinder, is also provided outside the housing to reduce the space occupied by the interior and to prevent blocking of moving workpieces.
With reference to fig. 2a and 2b, the collet mechanism of the present invention preferably comprises a stainless steel collet and a nylon collet that forms a nested fit with the stainless steel collet, the stainless steel collet and the nylon collet are identical in structure but different in size from the stainless steel collet, the nylon collet is embedded inside the stainless steel collet, and the lead MCP glass frit tube is clamped by the nylon collet.
As shown in the drawing, the stainless steel collet and the stainless steel collet have circular cross sections, and each of them has an outer wall surface 15a, an inner wall surface 15b, and a circular clamping space 15c formed by the inner wall surfaces, as shown in fig. 2a and 2b, and clamps a workpiece. At least one annular groove 15d is also provided in the circumferential direction on the surface of one end thereof for the jaws to grip.
Preferably, with reference to fig. 3, the turret clamp has a base 61 and a roller frame 62 arranged on the base, said roller frame comprising an annular sleeve 63 and a plurality of rollers 64 arranged inside the annular sleeve, uniformly arranged in the circumferential direction, each roller being provided with an externally adjustable adjusting knob 65 passing through the annular sleeve.
Therefore, when the rotating rod is supported between the rotating rod frame and the rotating rod clamp, the rotating rod, the grinding head and the lead-containing MCP glass leather material pipe share the same central axis and are parallel to the working table surface through fine adjustment of the adjusting knob, so that the rotating rod and the grinding head are guaranteed to keep the same coaxial line and concentricity with the height of a workpiece to be machined (the leather material pipe), and the machining quality is guaranteed.
In the machining process, the grinding head used by the precision machining device is one of a metal grinding head, a resin grinding head and a wool felt grinding head, and the different grinding heads are adopted in different working procedures in the machining process of the inner circle of the same lead-containing MCP glass leather material pipe. Particularly, the metal grinding head is a metal copper-based grinding head, and preferably a grinding head prepared by mixing, pressing and sintering a metal copper-based grinding material and a bonding agent at high temperature.
Preferably, in conjunction with fig. 4, the wool felt grater is provided with a slot on its outer circumference in the direction from the top to the tail of the grater.
Preferably, the grooves arranged on the wool felt grinding head are spiral grooves or inclined grooves along the processing direction. In fig. 4, the inclined groove 81 is taken as an example, so that the peripheral surface of the wool felt grinding head used in the invention is provided with the grooves for timely guiding out the polishing solution and the glass fine powder to reduce the influence on the polishing process because the processed lead-containing glass leather tube is longer and the depth of the inner circle is large.
The invention also provides a method for precisely machining the inner circle of the lead-containing MCP glass leather material tube, which comprises the following steps:
3, processing the inner circle, specifically, performing multiple cutting by using a resin grinding head, wherein the multiple cutting is performed by using different resin grinding heads, the mesh number of the resin grinding head is increased from 3000 meshes to 5000 meshes, cracks with different depths are eliminated by performing multiple cutting processing on the resin grinding heads with different mesh numbers, and the processing time is controlled to be 2.5-3.5H;
and 4, fine polishing, namely polishing by using a wool felt grinding head to ensure that the roughness of the inner circle surface of the lead-containing MCP glass leather material tube reaches 0.2um, wherein the polishing solution and the glass fine powder in the cutting process are led out through a groove arranged on the outer circumference of the wool felt grinding head in the direction from the top to the tail of the grinding head in the polishing process.
Preferably, the head of the grinding head is conical, and the rod body of the grinding rod corresponding to the grinding head is hexagonal and cylindrical. The contact area of the inner circle of the glass is larger, and the working efficiency is higher.
Preferably, two polishing treatments are adopted, the first polishing treatment adopts hard felt to carry out primary polishing, the time is controlled to be 0.5-1H, the second polishing treatment adopts soft wool felt (namely, soft felt) to carry out polishing, and the polishing time is 0.5-1H, so that the surface roughness of the inner circle of the glass tube can reach 0.2um under the observation of microscopic magnification of 100 times.
Preferably, the weight per unit volume of the first soft felt is larger than that of the second soft felt.
Therefore, in the inner circle reaming process, at least 2 metal grinding heads with different meshes are used for cutting, so that the problem that the crack depth of a lead-containing thin glass tube is too high due to one-step cutting is avoided, the follow-up fine machining and polishing are not facilitated, and the cracking of the thin glass skin tube is prevented by gradually increasing the meshes of the grinding heads for a long time and matching with the short feed control; meanwhile, the fine processing of the resin grinding head is combined, the cutting cracks of different depths are smoothed through continuous processing of 3000 plus 5000 meshes, and the time and difficulty of subsequent polishing are reduced. And finally, polishing the wool felt grinding head by hard and soft 2-wool felt grinding head, and combining with the flow guide treatment of the polishing solution to realize that the surface roughness of the inner circle of the glass tube reaches 0.2 um.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (10)
1. The utility model provides a pipe inner circle precision finishing device who contains lead MCP glass leather material pipe which characterized in that includes:
a bed body;
a table surface located on and supported by the bed;
the first motor is arranged at one end above the working table top;
the synchronous rotating shaft box is arranged at the other end above the working platform, and the synchronous rotating shaft box clamps a lead-containing MCP glass leather material pipe to be processed and can drive the lead-containing MCP glass leather material pipe to rotate at a set rotating speed;
a rotating rod frame arranged between the first motor and the synchronous rotating axle box;
a rotating rod clamp positioned between the rotating rod frame and the synchronous rotating axle box;
the rotating rod is supported on the rotating rod frame and the rotating rod clamp and faces the synchronous rotating shaft box, the torsion of the first motor is output to one end of the rotating rod to drive the rotating rod to rotate around the central axis, and the other end of the rotating rod is provided with a quick clamping mechanism;
the grinding head is detachably clamped in the quick clamping mechanism;
wherein, the rotating rod, the grinding head and the lead-containing MCP glass leather material tube share the same central axis and are parallel to the working table surface;
the second motor is further arranged below the working table, the torque force of the second motor is output to the rotating rod frame to drive the rotating rod frame to reciprocate along the track direction arranged on the working table, and the track is located below the rotating rod and parallel to the central axis.
2. The apparatus as claimed in claim 1, wherein the synchronous rotation axle box has a housing, a third motor, a driving mechanism, and two chucks supported by a pivot mechanism on a side wall of the housing and driven to rotate by the third motor, the chucks are provided with jaws driven by the driving mechanism to be clamped or unclamped, and a pair of collet mechanisms for clamping the lead MCP glass leather pipe are provided in the synchronous rotation axle box, and the collet mechanisms and the clamped lead MCP glass leather pipe are synchronously rotated by the jaws driven by the third motor.
3. The apparatus of claim 2, wherein the collet mechanism comprises a stainless steel collet and a nylon collet that forms a nested fit with the stainless steel collet, the nylon collet being located inside the stainless steel collet and clamping the lead MCP glass frit tube by the nylon collet.
4. The device for precisely machining the inner circle of the lead MCP glass leather tube according to claim 3, wherein the stainless steel collet and the stainless steel collet are circular in cross section, and at least one annular groove is further formed in the surface of one end of the stainless steel collet along the circumferential direction for clamping jaws.
5. The apparatus of claim 1, wherein the spindle fixture comprises a base and a roller frame mounted on the base, the roller frame comprises an annular sleeve and a plurality of rollers disposed inside the annular sleeve, the plurality of rollers are circumferentially disposed in a uniform manner, and each roller is provided with an adjusting knob passing through the annular sleeve and being adjustable from outside.
6. The apparatus of claim 5, wherein the spindle, the grinding head and the glass frit tube with MCP are coaxial and parallel to the table surface by fine adjustment of the adjusting knob while the spindle is supported between the spindle holder and the spindle fixture.
7. The apparatus of any one of claims 1 to 6, wherein the grinding head is one of a metal grinding head, a resin grinding head and a felt grinding head, and the different grinding heads are used in different steps during the machining of the inner circle of the same MCP glass tube.
8. The device for precisely machining the inner circle of the lead-containing MCP glass tube according to claim 7, wherein a groove is formed in the outer circumference of the wool felt grinding head in the direction from the top to the tail of the grinding head.
9. The device for precisely machining the inner circle of the lead MCP glass leather tube according to claim 8, wherein the grooves formed on the wool felt grinding head are spiral grooves or inclined grooves along the machining direction.
10. A method for precisely machining the inner circle of a lead MCP glass frit tube of a numerical control device according to any one of claims 1 to 9, comprising:
step 1, clamping a lead-containing MCP glass leather material pipe to a synchronous rotating axle box, and driving the glass leather material pipe to rotate at a set rotating speed;
step 2, inner circle reaming and cutting, specifically, carrying out secondary cutting processing by using a copper-based metal grinding head, wherein the first reaming processing adopts a copper-based metal grinding head with 80-100 meshes, the second reaming processing adopts a copper-based metal grinding head with 100-300 meshes, the mesh number of the copper-based metal grinding head adopted by the second reaming processing is larger, and the two reaming processing are both 1-1.5H;
3, processing the inner circle, specifically, performing multiple cutting by using a resin grinding head, wherein the multiple cutting is performed by using different resin grinding heads, the mesh number of the resin grinding head is increased from 3000 meshes to 5000 meshes, cracks with different depths are eliminated by performing multiple cutting processing on the resin grinding heads with different mesh numbers, and the processing time is controlled to be 2.5-3.5H;
and 4, fine polishing, namely polishing by using a wool felt grinding head to ensure that the roughness of the inner circle surface of the lead-containing MCP glass leather material tube reaches 0.2um, wherein the polishing solution and the glass fine powder in the cutting process are led out through a groove arranged on the outer circumference of the wool felt grinding head in the direction from the top to the tail of the grinding head in the polishing process.
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| CN113696084A (en) * | 2021-09-08 | 2021-11-26 | 瑞兴金属科技(连云港)有限公司 | Corrosion-resistant polishing treatment process and processing equipment for medical stainless steel pipe |
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