Chamfering tool for crucible shaft

Abstract

The utility model relates to a chamfering tool for a crucible shaft. Comprising a table frame, a table plate transversely fixed to the top of the table frame, a machining motor fixed in the table frame, a speed reducer fixed to the machining motor, an electric sliding table fixed in the table frame, and a machining shaft which is vertically and rotatably connected to the moving end of the electric sliding table so as to have the vertical moving function through the electric sliding table. The chuck is concentrically fixed at the upper end of the machining shaft, and the chamfering drill bit is concentrically and detachably fixed at the end part of the chuck; the coarse positioning assembly and the fine positioning assembly are arranged at the top of the table plate and matched with each other, a through hole concentric with the chamfering drill bit is formed in the table plate, and the coarse positioning assembly comprises two positioning strips transversely arranged and symmetrically located on the left side and the right side of the through hole and two studs vertically fixed to the lower sides of the rear ends of the two positioning strips respectively; according to the utility model, the input cost is reduced, the operation steps are simplified, and the time-saving and labor-saving effects are achieved.

Description

Technical Field

[0001] The utility model relates to a chamfering tool for a crucible shaft. Background Art

[0002] A single crystal furnace is a device that uses a graphite heater to melt polycrystalline materials such as polysilicon in an inert gas (mainly nitrogen and helium) environment and grows non-dislocated single crystals using the Czochralski method. The crucible shaft is an important component in a single crystal furnace, and most crucible shafts have a small aspect ratio. The production of the crucible shaft requires multiple processing steps, including drilling a countersink at the end and chamfering the countersink opening. The current chamfering method is to first place the crucible shaft horizontally and fix it in a fixture, then chamfer the countersink with the help of a chamfering tool, and finally remove the crucible shaft from the fixture and return it to the longitudinal direction. However, due to the large diameter of the crucible shaft, it is heavy, so the horizontal placement and movement of the crucible shaft must rely on pneumatic fingers with a large clamping force to complete, and the greater the clamping force of the pneumatic fingers, the higher the cost, so the investment cost is high, and the operation steps are relatively cumbersome, which is both time-consuming and labor-intensive, because the crucible shaft must be placed horizontally during processing, and then placed vertically again after the chamfering is completed, which needs further improvement. Utility Model Content

[0003] In view of the current status of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a chamfering tool for the crucible shaft which reduces the investment cost and simplifies the operation steps to achieve the effect of saving time and labor.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: a chamfering tool for a crucible shaft, comprising a table frame, a table plate fixed horizontally on the top of the table frame, a processing motor fixed in the table frame, a reducer fixed on the processing motor, an electric slide fixed in the table frame, a processing shaft vertically and rotatably connected to the moving end of the electric slide so as to have the function of vertical movement up and down with the help of the electric slide, a chuck concentrically fixed on the upper end of the processing shaft, and a chamfering drill bit concentrically and detachably fixed on the end of the chuck, the rotating shaft of the processing motor is connected to the input shaft of the reducer, and the reducer is fixed on the processing motor. The output shaft of the reducer is arranged vertically upward, and the lower end of the processing shaft is concentrically and movably connected to the output shaft of the reducer so that it has the function of moving up and down along the axial direction of the output shaft of the reducer and will not rotate relative to the output shaft of the reducer, characterized in that it also includes a coarse positioning component and a fine positioning component arranged on the top of the table board and cooperating with each other, the table board is provided with a through hole located above the chamfering drill bit, the coarse positioning component includes two positioning strips arranged horizontally and symmetrically located on the left and right sides of the through hole, and two studs respectively fixed vertically on the lower sides of the rear ends of the two positioning strips, and the two The front end of the positioning strip can be rotatably connected to the top of the table board, and two arc grooves symmetrically distributed on the left and right are provided in the table board, and the ends of the two studs pass through the two arc grooves respectively and extend to the bottom of the table board, and the ends of the two studs are also sleeved with a nut threaded, and the two nuts are pressed tightly on the bottom outer wall of the table board; the precision positioning component includes a front beam and a rear beam which are arranged horizontally and distributed front and back respectively, a first driving block and a second driving block which are movably connected to the rear beam and have the function of left and right translation and are distributed up and down respectively, a first movable beam and a second movable beam which are respectively fixed horizontally on the first driving block and the second driving block and are respectively distributed left and right, and two positioning column combinations which are respectively fixed on the first movable beam and the second movable beam and are symmetrically arranged on the left and right, the ends of the first movable beam and the second movable beam are both movably connected to the front beam, and the positioning column combination includes two positioning columns which are vertically arranged and distributed front and back respectively; the center position between the four positioning columns is concentrically arranged with the chamfering drill bit; a support frame is also fixed between the two ends of the front beam and the table board and between the two ends of the rear beam and the table board.

[0005] Preferably, a laterally distributed adjustment strip is provided on the inner side of each of the two positioning strips, each of the adjustment strips is parallel to a positioning strip on the same side, and each of the positioning strips is also threaded with two laterally arranged knob screws that are respectively distributed front and back, and the threaded ends of the two knob screws can be rotatably connected to the outer side of the adjustment strip.

[0006] Preferably, the precision positioning assembly also includes a positioning cylinder fixed on the rear beam, a gear rotatably connected to the rear beam and between the first drive block and the second drive block, and two racks laterally fixed on the first drive block and the second drive block and respectively meshed on the upper and lower sides of the gear. The telescopic end of the positioning cylinder is laterally arranged and fixed on the first drive block or the second drive block.

[0007] Preferably, a groove which is distributed transversely and cooperates with the adjustment strip is formed on the inner wall of the two positioning strips, and the knob screw is transversely inserted and threaded between the bottom surface of the groove and the outer wall of the positioning strip.

[0008] Preferably, it also includes two pushing cylinders respectively arranged in front of and behind the table top, the telescopic ends of the two pushing cylinders are arranged horizontally and opposite to each other, and an arc-shaped push plate is fixed on the telescopic ends of the two pushing cylinders, and the arc-shaped push plate and the telescopic ends of the pushing cylinders are higher than the top of the table top.

[0009] Preferably, a transversely distributed conveyor belt is also provided at the rear of the table frame, and the conveyor belt is arranged between the table top and a pushing cylinder at the rear. The top of the conveyor belt cooperates with the top of the table top and is lower than the telescopic end of a pushing cylinder at the rear and a curved push plate at the rear.

[0010] Compared with the prior art, the utility model has the advantages that: the utility model can automatically chamfer the countersink of the crucible shaft while keeping it always in a vertical position, and automatically and accurately position it with the help of a coarse positioning component and a fine positioning component to ensure processing accuracy, so there is no need to use pneumatic fingers with large clamping force or repeatedly turn the direction of the crucible shaft, so it not only reduces the investment cost but also simplifies the operation steps to achieve the effect of saving time and effort; in addition, since the length-to-diameter ratio of the crucible shaft is relatively small and the weight is heavy, the crucible shaft is not easy to tip over when pushed by the telescopic end of the pushing cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the exploded structural diagram of the left front side of the utility model;

[0012] Figure 2 It is a left front structural diagram of the precision positioning assembly of the utility model. DETAILED DESCRIPTION

[0013] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0014] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0015] like Figures 1-2As shown, a chamfering tool for a crucible shaft comprises a table frame 1, a table plate 2 transversely fixed on the top of the table frame 1, a processing motor 3 fixed in the table frame 1, a reducer 4 fixed on the processing motor 3, an electric slide 12 fixed in the table frame 1, a processing shaft 13 vertically and rotatably connected to the moving end of the electric slide 12 so as to have an up and down vertical movement function with the help of the electric slide 12, a chuck 5 concentrically fixed to the upper end of the processing shaft 13, and a chamfering drill bit 6 concentrically and detachably fixed to the end of the chuck 5, the rotating shaft of the processing motor 3 is connected to the input shaft of the reducer 4, and the output shaft of the reducer 4 is vertically arranged upward. The lower end of the processing shaft 13 is concentrically and movably connected to the output shaft of the reducer 4 so that it has the function of moving up and down along the axial direction of the output shaft of the reducer 4 and will not rotate relative to the output shaft of the reducer 4; it also includes a coarse positioning component and a fine positioning component 11 arranged on the top of the table board 2 and cooperating with each other. A through hole 21 located above the chamfering drill bit 6 is opened in the table board 2. The coarse positioning component includes two positioning strips 7 arranged horizontally and symmetrically located on the left and right sides of the through hole 21, and two studs 8 vertically fixed to the lower sides of the rear ends of the two positioning strips 7. The front ends of the two positioning strips 7 can be rotatably connected to the top of the table board 2. The table top 2 is provided with two arc grooves 22 symmetrically distributed on the left and right, the ends of the two studs 8 respectively pass through the two arc grooves 22 and extend to the bottom of the table top 2, and the ends of the two studs 8 are also sleeved with a nut 9 threaded, and the two nuts 9 are pressed tightly on the bottom outer wall of the table top 2; the precision positioning component 11 includes a front beam 111 and a rear beam 112 which are transversely arranged and respectively distributed front and back, a first driving block 113 and a second driving block 114 which are movably connected to the rear beam 112 and both have the function of left and right translation and are respectively distributed up and down, and a first driving block 113 and a second driving block 114 which are respectively transversely fixed on the first driving block 113 and the second driving block 114 and are respectively A first movable beam 1111 and a second movable beam 115 are respectively distributed on the left and right, and two positioning column combinations are respectively fixed on the first movable beam 1111 and the second movable beam 115 and symmetrically arranged on the left and right. The ends of the first movable beam 1111 and the second movable beam 115 are movably connected to the front beam 111. The positioning column combination includes two vertically arranged positioning columns 118 respectively distributed front and back; the center position between the four positioning columns 118 is concentrically arranged with the chamfering drill bit 6; a support frame 1110 is also fixed between the two ends of the front beam 111 and the table board 2 and between the two ends of the rear beam 112 and the table board 2.

[0016] A laterally distributed adjustment strip 14 is also provided on the inner side of the two positioning strips 7. Each adjustment strip 14 is parallel to a positioning strip 7 on the same side. Two laterally arranged knob screws 15 are also threadedly inserted in each positioning strip 7 and are respectively distributed front and back. The threaded ends of the two knob screws 15 can be rotatably connected to the outer side of the adjustment strip 14.

[0017] The precision positioning assembly 11 also includes a positioning cylinder 119 fixed on the rear beam 112, a gear 117 rotatably connected to the rear beam 112 and between the first driving block 113 and the second driving block 114, and two racks 116 respectively fixed laterally on the first driving block 113 and the second driving block 114 and respectively meshed on the upper and lower sides of the gear 117. The telescopic end of the positioning cylinder 119 is laterally arranged and fixed on the first driving block 113 or the second driving block 114.

[0018] The inner walls of the two positioning strips 7 are each provided with a groove 71 which is distributed transversely and cooperates with the adjustment strip 14 , and the knob screw 15 is transversely inserted and screwed between the bottom surface of the groove 71 and the outer wall of the positioning strip 7 .

[0019] A chamfering tool for a crucible shaft also includes two pushing cylinders 17 respectively arranged in front of and behind a table top 2. The telescopic ends of the two pushing cylinders 17 are both arranged horizontally and opposite to each other. An arc-shaped pushing plate 10 is fixed to the telescopic ends of the two pushing cylinders 17. The arc-shaped pushing plate 10 and the telescopic ends of the pushing cylinders 17 are both higher than the top of the table top 2.

[0020] A transversely distributed conveyor belt 16 is also provided at the rear of the table frame 1. The conveyor belt 16 is provided between the table board 2 and a pushing cylinder 17 at the rear. The top of the conveyor belt 16 cooperates with the top of the table board 2 and is lower than the telescopic end of the pushing cylinder 17 at the rear and a curved push plate 10 at the rear.

[0021] Working principle:

[0022] Place the crucible shaft vertically on the conveyor belt 16 and start the conveyor belt 16, the crucible shaft will be driven by the conveyor belt 16 to the rear of the table 2, and then drive the telescopic end of a pushing cylinder 17 at the rear to extend outward to use an arc-shaped pushing plate 10 at the rear to push the crucible shaft forward and translate to the top of the table 2, and then continue to move to between the rear ends of the two positioning bars 7 under the push of the telescopic end of the pushing cylinder 17.

[0023] Prior to this, it is necessary to adjust the angle between the two positioning bars 7 according to the outer diameter of the crucible shaft and with the help of the rotatable connection between the front end of each positioning bar 7 and the table top 2. Before adjustment, the two nuts 9 need to be loosened. During adjustment, the two studs 8 fixed at the rear end of the positioning bar 7 will slide along the two arc grooves 22 respectively. After the adjustment is completed, the two nuts 9 can be tightened. The result of the above adjustment is that after the crucible shaft moves forward from the bottom of the rear beam 112 and is finally blocked by the two positioning bars 7, the countersunk hole at its lower end is located above the chamfering drill bit 6, but it still needs to be adjusted.

[0024] Next, the telescopic end of the positioning cylinder 119 is driven to extend outward or retract inward to drive the corresponding rack 116 to move horizontally with the help of the first driving block 113 or the second driving block 114, and then the second driving block 114 is driven to move synchronously in the opposite direction with the help of the gear 117 and the other rack 116, thereby driving the first moving beam 1111 and the second moving beam 115 to move relative to each other in the direction of the crucible axis, and then the crucible axis is pushed to move slightly with the help of four positioning columns 118 until the four positioning columns 118 are all attached to the outer wall of the crucible axis. At this time, the countersunk hole at the lower end of the crucible axis is further accurately positioned and is located directly above the chamfering drill bit 6.

[0025] Thereafter, the processing motor 3 is started to drive the processing shaft 13 to rotate with the help of the reducer 4, and then the chamfering drill bit 6 is driven to rotate with the help of the chuck 5, and then the moving end of the electric slide 12 is driven to move slowly upward so that the processing shaft 13 drives the chuck 5 and the chamfering drill bit 6 to move upward, and then the end of the chamfering drill bit 6 passes through the through hole 21 upward and moves concentrically toward the direction of the countersunk hole located at the lower end of the crucible shaft, and then the above-mentioned countersunk hole is chamfered. The above principle is the prior art.

[0026] After the processing is completed, the telescopic end of a push cylinder 17 at the rear is driven to retract inward and the telescopic end of a push cylinder 17 at the front is driven to extend outward, and then the chamfered crucible axis is pushed backward with the help of an arc-shaped push plate 10 in the front until it returns to the conveyor belt 16, so that the crucible axis automatically returns to the conveyor belt 16 and is driven downstream by the conveyor belt 16, and then the next crucible axis is pushed again between the two positioning bars 7 according to the same method.

[0027] If the outer diameter of the crucible shaft is reduced, the original two positioning bars 7 cannot block the crucible shaft. At this time, it is necessary to screw the two knob screws 15 on each positioning bar 7, and then according to the principle of spiral connection, drive the adjustment bar 14 to slowly come out of the groove 71 and move toward the direction of the crucible shaft. However, it is necessary to ensure that the adjustment bar 14 after displacement is parallel to the positioning bar 7. In this way, the crucible shaft will be blocked by the two adjustment bars 14 and play the function of preliminary positioning.

[0028] The utility model can automatically chamfer the countersink of the crucible shaft while keeping it always in a vertical position, and automatically and accurately position it with the help of a rough positioning component and a fine positioning component 11 to ensure the processing accuracy, so there is no need to use pneumatic fingers with large clamping force or repeatedly turn the direction of the crucible shaft, so it not only reduces the investment cost but also simplifies the operation steps to achieve the effect of saving time and labor; in addition, since the length-diameter ratio of the crucible shaft is relatively small and the weight is heavy, the crucible shaft is not easy to tip over when pushed by the telescopic end of the pushing cylinder 17.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A chamfering tool for a crucible shaft, comprising a table frame, a table plate fixed transversely to the top of the table frame, a processing motor fixed in the table frame, a reducer fixed to the processing motor, an electric slide fixed in the table frame, a processing shaft vertically and rotatably connected to the moving end of the electric slide so as to have the function of vertical movement up and down with the help of the electric slide, a chuck concentrically fixed to the upper end of the processing shaft, and a chamfering drill bit concentrically and detachably fixed to the end of the chuck, the rotating shaft of the processing motor is connected to the input shaft of the reducer, the output shaft of the reducer is vertically arranged upward, the lower end of the processing shaft is concentrically and movably connected to the output shaft of the reducer so as to have the function of moving up and down along the axial direction of the output shaft of the reducer and will not rotate relative to the output shaft of the reducer, characterized in that The invention also includes a coarse positioning component and a fine positioning component which are arranged on the top of the table top and cooperate with each other, the table top is provided with a through hole located above the chamfer drill bit, the coarse positioning component includes two positioning strips which are arranged horizontally and symmetrically located on the left and right sides of the through hole, and two studs which are respectively vertically fixed on the lower sides of the rear ends of the two positioning strips, the front ends of the two positioning strips are rotatably connected to the top of the table top, the table top is provided with two arc grooves which are symmetrically distributed on the left and right, the ends of the two studs respectively pass through the two arc grooves and extend to the bottom of the table top, the ends of the two studs are also sleeved with a nut which is screwed, and the two nuts are pressed tightly on the bottom outer wall of the table top; the fine positioning component includes two positioning strips which are arranged horizontally and distributed front and back respectively The front beam and the rear beam, the first driving block and the second driving block which are movably connected to the rear beam and have the function of left and right translation and are respectively distributed up and down, the first movable beam and the second movable beam which are respectively transversely fixed to the first driving block and the second driving block and are respectively distributed left and right, and two positioning column combinations which are respectively fixed to the first movable beam and the second movable beam and are symmetrically arranged left and right, the ends of the first movable beam and the second movable beam are both movably connected to the front beam, and the positioning column combination includes two vertically arranged positioning columns which are respectively distributed front and back; the center position between the four positioning columns is concentrically arranged with the chamfering drill bit; a support frame is also fixed between the two ends of the front beam and the table board and between the two ends of the rear beam and the table board.

2. A chamfering tool for a crucible shaft according to claim 1, characterized in that: A laterally distributed adjustment strip is also provided on the inner side of the two positioning strips, each of the adjustment strips is parallel to a positioning strip on the same side, and each of the positioning strips is also threaded with two laterally arranged knob screws that are respectively distributed front and back, and the threaded ends of the two knob screws can be rotatably connected to the outer side of the adjustment strip.

3. A chamfering tool for a crucible shaft according to claim 2, characterized in that: The precision positioning assembly also includes a positioning cylinder fixed on the rear beam, a gear rotatably connected to the rear beam and between the first drive block and the second drive block, and two racks respectively fixed laterally on the first drive block and the second drive block and meshing on the upper and lower sides of the gear. The telescopic end of the positioning cylinder is laterally arranged and fixed on the first drive block or the second drive block.

4. A chamfering tool for a crucible shaft according to claim 2, characterized in that: The inner walls of the two positioning strips are each provided with a groove which is distributed transversely and cooperates with the adjustment strip, and the knob screw is transversely inserted and screwed between the bottom surface of the groove and the outer wall of the positioning strip.

5. The chamfering tool for a crucible shaft according to claim 1, characterized in that: It also includes two pushing cylinders which are respectively arranged in front of and behind the table top. The telescopic ends of the two pushing cylinders are arranged horizontally and opposite to each other. An arc-shaped pushing plate is fixed on the telescopic ends of the two pushing cylinders. The arc-shaped pushing plate and the telescopic ends of the pushing cylinders are higher than the top of the table top.

6. A chamfering tool for a crucible shaft according to claim 5, characterized in that: A transversely distributed conveyor belt is also provided at the rear of the table frame. The conveyor belt is arranged between the table top and a pushing cylinder at the rear. The top of the conveyor belt cooperates with the top of the table top and is lower than the telescopic end of a pushing cylinder at the rear and a curved pushing plate at the rear.

Images