CN211889313U - Three-axis numerical control tapping mechanism - Google Patents
Three-axis numerical control tapping mechanism Download PDFInfo
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- CN211889313U CN211889313U CN202020581065.0U CN202020581065U CN211889313U CN 211889313 U CN211889313 U CN 211889313U CN 202020581065 U CN202020581065 U CN 202020581065U CN 211889313 U CN211889313 U CN 211889313U
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- 238000010079 rubber tapping Methods 0.000 title claims abstract description 45
- 230000007246 mechanism Effects 0.000 title claims abstract description 24
- 238000013016 damping Methods 0.000 claims abstract description 11
- 230000009467 reduction Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
The utility model discloses a three-axis numerical control tapping mechanism, which comprises a base, a damping component, a Y-axis linear module, an X-axis linear module, a screw rod clamping seat, a stand column, a Z-axis linear module and a screw tap power component; the lower part of the base is provided with the damping assembly, the upper part of the base is provided with the Y-axis linear module, the Y-axis linear module drives the X-axis linear module to move longitudinally, and the X-axis linear module drives the lead screw clamping seat to move transversely; the base is also provided with the upright post, and the side wall of the upright post is provided with a screw tap containing box for storing a screw tap; the Z-axis linear module is installed on the upright post and drives the screw tap power assembly to move up and down. The utility model discloses with the work piece clamping behind the lead screw holder, the tapping operation of a plurality of hole sites of work piece can be accomplished automatically to the external PLC industrial control system of cooperation, has the efficient advantage of tapping.
Description
Technical Field
The utility model belongs to the technical field of the numerical control equipment technique and specifically relates to a triaxial numerical control tapping mechanism.
Background
Tapping, namely screwing a screw tap into a bottom hole to be drilled by using certain torque to process an internal thread; with the development of automation technology, adopt numerical control tapping equipment to carry out tapping operation in the industrial production gradually, current tapping equipment is usually: firstly, arranging a workpiece clamp on a base; then, clamping the workpiece to a workpiece clamp; and finally, driving the tapping mechanism to do linear reciprocating motion by a linear module, and finishing tapping operation on the workpiece clamped on the workpiece clamp in the motion process of the tapping mechanism. The single-shaft tapping equipment has the characteristics of lightness and flexibility, and is suitable for tapping operation of simple workpieces; however, the tapping direction of the single-shaft drilling equipment is fixed, even some double-shaft tapping equipment cannot meet the multi-hole tapping requirements of part of special workpieces, an operator needs to repeatedly adjust the clamping position of the workpiece and even replace different workpiece clamps, and the single-shaft drilling equipment is time-consuming, labor-consuming and extremely inconvenient; meanwhile, due to the increase of human resource cost, a three-axis numerical control company mechanism is urgently needed in the market.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem provide a triaxial numerical control tapping mechanism to the problem among the above-mentioned prior art, this triaxial numerical control tapping mechanism can realize the triaxial linkage after the external PLC industry control system of cooperation, satisfies the porous position tapping demand of work piece, provides the hardware basis for efficient triaxial numerical control tapping equipment.
In order to solve the technical problem, the utility model adopts a technical scheme that the three-axis numerical control tapping mechanism comprises a base, a damping component, a Y-axis linear module, an X-axis linear module, a screw rod clamping seat, a stand column, a Z-axis linear module and a screw tap power component; the lower part of the base is provided with the damping assembly, the upper part of the base is provided with the Y-axis linear module, the Y-axis linear module drives the X-axis linear module to move longitudinally, and the X-axis linear module drives the lead screw clamping seat to move transversely; the base is also provided with the upright post, and the side wall of the upright post is provided with a screw tap containing box for storing a screw tap; the Z-axis linear module is mounted on the upright post and drives the screw tap power assembly to move up and down; the screw tap power assembly comprises a gear reduction motor, a bracket, a rotating shaft, a driven belt wheel, a driving belt wheel, a synchronous belt and a screw tap collet; the gear reduction motor is fixedly arranged on the support, the rotating shaft is rotatably arranged on the support, the upper end of the rotating shaft is sleeved with the driven belt wheel, the driven belt wheel and the driving belt wheel sleeved on the output shaft of the gear reduction motor are in transmission through the synchronous belt, and the diameter of the driven belt wheel is larger than that of the driving belt wheel; and a tap collet is arranged at the lower end of the rotating shaft.
As a further elaboration of the above technical solution:
in the technical scheme, the screw rod clamping seat comprises a fixed seat, a first clamping block, a second clamping block, a sliding block, a screw rod and a handle; the upper part of the fixed seat is provided with a strip-shaped sliding chute along the length direction; the first clamping block and the second clamping block are oppositely arranged on the upper side of the strip-shaped sliding groove; the first clamping block is connected with the side wall of the strip-shaped sliding groove; the second clamping block is fixedly connected with the sliding block which is slidably arranged in the strip-shaped sliding groove; the sliding block is provided with a threaded hole along the sliding direction; the screw rod is rotatably arranged on the side wall of the strip-shaped sliding groove in a penetrating mode, one end of the screw rod is in threaded fit with the threaded hole, and the other end of the screw rod is provided with the handle.
In the above technical solution, the fixing base includes a bottom plate, a side plate and an end plate; the upper part of the bottom plate is provided with two side plates in an arrayed manner, the bottom plate and the two side plates form the strip-shaped sliding chute in an enclosed manner, and two ends of the end plate are respectively connected with one end part of the two side plates on the same side; the screw rod is rotatably mounted on the end plate.
In the above technical scheme, the both sides wall of slider length direction outwards extends to have spacing arch, two the top end edge of curb plate all extend have with spacing protruding complex first spacing portion, two the curb plate with the relative one end of end plate all extend have with spacing protruding complex second spacing portion.
In the technical scheme, the workpiece positioning device further comprises a profiling positioning block matched with the bottom of the workpiece, wherein the profiling positioning block comprises a first positioning part and a second positioning part; the first positioning part is in a trapezoid shape and is arranged on the upper wall of the sliding block; the second positioning part is in a trapezoidal shape and is arranged at the upper part of one end of the first positioning part.
In the above technical scheme, the Y-axis linear module is a ball screw type linear module.
In the above technical solution, the X-axis linear module is a ball screw type linear module.
In the above technical scheme, the Z-axis linear module is a ball screw type linear module.
In the above technical solution, the damping assembly includes a support plate, a sleeve, a spring, a limiting plate and a support column; the sleeve is installed at the top of the supporting plate, the inner wall of the bottom of the sleeve is connected with the limiting plate through the spring, the limiting plate is connected with the sleeve in a sliding mode, the supporting column is fixed to the top of the limiting plate through a bolt, and the supporting column penetrates through the sleeve and is connected with the base.
The utility model has the advantages that one of the screw tap collet chuck is provided with a Z-axis linear module driving the screw tap power assembly to move up and down, the screw tap power assembly driving the screw tap to rotate forwards and reversely, and the X-axis linear module and the Y-axis linear module driving the workpiece to move in two axes, so that the relative three-axis linkage between the screw tap and the workpiece is formed, and finally, the requirement of multi-hole tapping on the workpiece can be completed by one-time clamping; secondly, a damping component is arranged at the lower part of the base, so that the phenomenon that the three-axis numerical control tapping mechanism shakes under the action of external force in the tapping process of the screw tap is prevented, the tapping precision of the screw tap is further influenced, and even the screw tap is broken; thirdly, the screw tap containing box is convenient for the batch storage of screw taps, effectively prevents that reserve screw tap from losing.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the screw rod clamping seat of the present invention;
fig. 3 is a schematic structural view of the shock-absorbing assembly of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
Fig. 1-3 exemplify the utility model discloses a triaxial numerical control tapping mechanism's embodiment, refer to fig. 1-3, a triaxial numerical control tapping mechanism, including base 1, damper assembly 2, Y axle straight line module 3, X axle straight line module 4, lead screw holder 5, stand 6, Z axle straight line module 7 and screw tap power component 8. The lower part of the base 1 is provided with the damping component 2, so that the base 1 has a good damping effect. The upper portion of base 1 is equipped with Y axle sharp module 3, Y axle sharp module 3 drive X axle sharp module 4 longitudinal movement, X axle sharp module 4 drive lead screw holder 5 lateral shifting. Still be equipped with on the base 1 stand 6, be equipped with the screw tap containing box 9 that is used for depositing the screw tap on the lateral wall of stand 6, it is here that need explain: the screw tap containing box 9 can be any screw tap containing box in the prior art, so that the screw taps can be stored in batches conveniently, and standby screw taps can be effectively prevented from being lost. The Z-axis linear module 7 is installed on the upright post 6, and the Z-axis linear module 7 drives the screw tap power assembly 8 to move up and down; the tap power assembly 8 comprises a gear reduction motor 10, a bracket 11, a rotating shaft 12, a driven pulley 13, a driving pulley 14, a timing belt 15 and a tap collet 16. The bracket 11 is slidably mounted on the upright post 6 through a guide rail pair; the gear reduction motor 10 is fixedly arranged on the bracket 11; the rotating shaft 12 is rotatably arranged on the bracket 11 in a penetrating manner, the upper end of the rotating shaft 12 is sleeved with the driven belt wheel 13, the driven belt wheel 13 is in transmission with the driving belt wheel 14 sleeved on the output shaft of the gear reduction motor 10 through the synchronous belt 15, and the diameter of the driven belt wheel 13 is larger than that of the driving belt wheel 14; the lower end of the rotating shaft 12 is provided with a tap collet 16. Here, it should be noted that: first, the tap collet 16 is a standard fitting in the prior art, and a tap is mounted on the tap collet 16 when performing a tapping operation; secondly, the gear reduction motor 10 is connected with an external power supply and then drives the tap collet 16 to rotate in a belt transmission mode so as to drive the tap to rotate, and meanwhile, the Z-axis linear module 7 drives the tap power assembly 8 and the tap to move up and down, so that the tap is rotated to move up or down, namely the tapping action of the tap is realized; thirdly, among the existing tapping equipment, generally last injection cooling oil cools off at the upper surface of work piece promptly the contact surface of screw tap and work piece, if the rotational speed of screw tap was too high, the temperature of work piece can sharply rise, and the lower surface of work piece and the corresponding department of screw tap owing to sheltering from unable injection cooling oil by the work piece tool and cooling, the too high rotational speed of screw tap causes the work piece lower surface to be burnt black easily, in order to avoid the emergence of this type of situation, the utility model discloses it is lower firstly to have adopted output shaft rotational speed gear motor 10 as the power supply, the rethread lets the diameter of driven pulley 13 is greater than drive pulley 14's diameter makes the rotational speed of rotation axis 12 is less than the rotational speed of gear motor 10 output shaft, and then avoids the screw tap rotational speed to cause the work piece lower surface to burn black.
Further, the screw rod clamping seat 5 comprises a fixed seat 17, a first clamping block 18, a second clamping block 19, a sliding block 20, a screw rod 21 and a handle 22; the upper part of the fixed seat 17 is provided with a strip-shaped sliding groove 23 along the length direction; the first clamping block 18 and the second clamping block 19 are oppositely arranged on the upper side of the strip-shaped sliding groove 23; the first clamping block 18 is in threaded connection with the side wall of the strip-shaped sliding groove 23; the second clamping block 19 is fixedly connected with the sliding block 20 which is slidably arranged in the strip-shaped sliding groove 23; the sliding block 20 is provided with a threaded hole along the sliding direction; the screw rod 21 is rotatably arranged on the side wall of the strip-shaped sliding groove 23 in a penetrating mode, one end of the screw rod is in threaded fit with the threaded hole, and the other end of the screw rod is hinged with the handle 22. In the using process, the first clamping block 18 is fixed, when an operator forwards dials the handle 22, the handle 22 drives the sliding block 20 and the second clamping block 19 to synchronously slide in the direction of the first clamping block 18 in a screw rod transmission mode, and therefore the first clamping block 18 and the second clamping block 19 clamp a workpiece; conversely, when the operator pulls the handle 22 in the reverse direction, the first clamping block 18 and the second clamping block 19 release the workpiece. Furthermore, because the handle 22 is hinged to the screw rod 21, when the handle 22 and the screw rod 21 are shifted by 180 ° around the X axis, the handle 22 interferes with the fixed seat 17 and cannot be shifted further, and at this time, the handle 22 is rotated by 180 ° around the Z axis and reset, so that the screw rod 21 can be shifted further around the X axis.
Further, the fixing seat 17 includes a bottom plate 24, a side plate 25 and an end plate 26. The upper part of the bottom plate 24 is provided with two side plates 25 in an arrayed manner, the bottom plate 24 and the two side plates 25 enclose the strip-shaped sliding groove 23, and the first clamping block 18 is screwed on the upper walls of the side plates 25. Two ends of the end plate 26 are respectively connected with one end part of the two side plates 25 at the same side; the lead screw 21 is rotatably mounted on the end plate 26.
Furthermore, two side walls in the direction of the sliding block 20 extend outwards to form limiting protrusions 27, the upper end edges of the two side plates 25 extend to form first limiting portions 28 matched with the limiting protrusions 27, and the opposite ends of the two side plates 25 and the end plate 26 extend to form second limiting portions 29 matched with the limiting protrusions 27. The sliding stroke of the sliding block 20 is limited in the strip-shaped sliding groove 23 by the cooperation of the limiting protrusion 27, the first limiting part 28 and the second limiting part 29.
Further, the positioning device also comprises a profiling positioning block matched with the bottom of the workpiece, wherein the profiling positioning block comprises a first positioning part 30 and a second positioning part 31; the first positioning portion 30 is a trapezoid and is disposed on the upper wall of the slider 20; the second positioning portion 31 is in a shape of a step, is arranged at the upper portion of one end of the first positioning portion 30, and is matched with the bottom of the workpiece by the profiling positioning block, so that a better clamping effect is achieved.
Further, the Y-axis linear module 3, the X-axis linear module 4, and the Z-axis linear module 7 are all ball screw type linear modules in the prior art.
The reference numbers in the figures are respectively: the screw tap comprises a base 1, a damping assembly 2, a 3Y-axis linear module, a 4X-axis linear module, a 5 screw rod clamping seat, a 6 upright post, a 7Z-axis linear module, a 8 screw tap power assembly, a 9 screw tap containing box, a 10 gear reduction motor, a 11 support, a 12 rotating shaft, a 13 driven pulley, a 14 driving pulley, a 15 synchronous belt, a 16 screw tap collet chuck, a 17 fixing seat, a 18 first clamping block, a 19 second clamping block, a 20 sliding block, a 21 screw rod, a 22 handle, a 23 strip-shaped sliding groove, a 24 bottom plate, a 25 side plate, a 26 end plate, a 27 limiting bulge, a 28 first limiting part, a 29 second limiting part, a 30 first positioning part, a 31 second positioning part, a 32 supporting plate, a 33 sleeve, a 34 spring, a 35 limiting plate.
Further, the shock absorption assembly 2 comprises a support plate 32, a sleeve 33, a spring 34, a limit plate 35 and a support column 36; install the top of backup pad 32 sleeve 33, the bottom inner wall of sleeve 33 pass through spring 34 with the limiting plate 35 is connected, limiting plate 35 with sleeve 33 sliding connection, the top of limiting plate 35 is fixed with through the bolt support column 36, support column 36 pass sleeve 33 with base 1 is connected.
The utility model relates to a triaxial numerical control tapping mechanism connects in outside PLC industry control system when using, and its theory of operation is as follows:
firstly, a screw tap is arranged on the screw tap collet 16, and a workpiece to be tapped is fixed on the screw rod collet 5; then, the Z-axis linear module 7 drives the screw tap power assembly 8 to move up and down, and meanwhile, the screw tap power assembly 8 drives the screw tap to rotate forwards and backwards; and then, after one hole position of the workpiece is tapped, the X-axis linear module 4 and the Y-axis linear module 3 drive the workpiece to move in two axes, so that the other hole position of the workpiece is positioned right below the screw tap, and the tapping operation is carried out. To sum up, the utility model relates to a function of porous position tapping on the work piece has been realized once the clamping to triaxial numerical control tapping mechanism, has advantages such as reasonable in design, production efficiency height.
The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (9)
1. A three-axis numerical control tapping mechanism is characterized by comprising a base, a damping assembly, a Y-axis linear module, an X-axis linear module, a screw rod clamping seat, an upright post, a Z-axis linear module and a screw tap power assembly; the lower part of the base is provided with the damping assembly, the upper part of the base is provided with the Y-axis linear module, the Y-axis linear module drives the X-axis linear module to move longitudinally, and the X-axis linear module drives the lead screw clamping seat to move transversely; the base is also provided with the upright post, and the side wall of the upright post is provided with a screw tap containing box for storing a screw tap; the Z-axis linear module is mounted on the upright post and drives the screw tap power assembly to move up and down; the screw tap power assembly comprises a gear reduction motor, a bracket, a rotating shaft, a driven belt wheel, a driving belt wheel, a synchronous belt and a screw tap collet; the gear reduction motor is fixedly arranged on the support, the rotating shaft is rotatably arranged on the support, the upper end of the rotating shaft is sleeved with the driven belt wheel, the driven belt wheel and the driving belt wheel sleeved on the output shaft of the gear reduction motor are in transmission through the synchronous belt, and the diameter of the driven belt wheel is larger than that of the driving belt wheel; and a tap collet is arranged at the lower end of the rotating shaft.
2. The three-axis numerical control tapping mechanism according to claim 1, wherein the screw rod clamping seat comprises a fixed seat, a first clamping block, a second clamping block, a sliding block, a screw rod and a handle; the upper part of the fixed seat is provided with a strip-shaped sliding chute along the length direction; the first clamping block and the second clamping block are oppositely arranged on the upper side of the strip-shaped sliding groove; the first clamping block is connected with the side wall of the strip-shaped sliding groove; the second clamping block is fixedly connected with the sliding block which is slidably arranged in the strip-shaped sliding groove; the sliding block is provided with a threaded hole along the sliding direction; the screw rod is rotatably arranged on the side wall of the strip-shaped sliding groove in a penetrating mode, one end of the screw rod is in threaded fit with the threaded hole, and the other end of the screw rod is provided with the handle.
3. The three-axis numerical control tapping mechanism according to claim 2, wherein the fixed seat comprises a bottom plate, a side plate and an end plate; the upper part of the bottom plate is provided with two side plates in an arrayed manner, the bottom plate and the two side plates form the strip-shaped sliding chute in an enclosed manner, and two ends of the end plate are respectively connected with one end part of the two side plates on the same side; the screw rod is rotatably mounted on the end plate.
4. The three-axis numerical control tapping mechanism according to claim 3, wherein two side walls of the sliding block in the length direction extend outwards to form limiting protrusions, the upper end edges of the two side plates extend to form first limiting parts matched with the limiting protrusions, and the ends of the two side plates opposite to the end plates extend to form second limiting parts matched with the limiting protrusions.
5. The three-axis numerical control tapping mechanism according to claim 4, further comprising a profiling locating block matched with the bottom of the workpiece, wherein the profiling locating block comprises a first locating part and a second locating part; the first positioning part is in a trapezoid shape and is arranged on the upper wall of the sliding block; the second positioning part is in a trapezoidal shape and is arranged at the upper part of one end of the first positioning part.
6. The three-axis numerically controlled tapping mechanism according to claim 1, wherein the Y-axis linear die set is a ball screw type linear die set.
7. The three-axis numerically controlled tapping mechanism according to claim 6, wherein the X-axis linear die set is a ball screw type linear die set.
8. The three-axis numerically controlled tapping mechanism according to claim 7, wherein the Z-axis linear module is a ball screw type linear module.
9. The three-axis numerical control tapping mechanism according to any one of claims 1 to 8, wherein the shock absorption assembly comprises a support plate, a sleeve, a spring, a limiting plate and a support column; the sleeve is installed at the top of the supporting plate, the inner wall of the bottom of the sleeve is connected with the limiting plate through the spring, the limiting plate is connected with the sleeve in a sliding mode, the supporting column is fixed to the top of the limiting plate through a bolt, and the supporting column penetrates through the sleeve and is connected with the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020581065.0U CN211889313U (en) | 2020-04-18 | 2020-04-18 | Three-axis numerical control tapping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020581065.0U CN211889313U (en) | 2020-04-18 | 2020-04-18 | Three-axis numerical control tapping mechanism |
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| Publication Number | Publication Date |
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| CN211889313U true CN211889313U (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020581065.0U Expired - Fee Related CN211889313U (en) | 2020-04-18 | 2020-04-18 | Three-axis numerical control tapping mechanism |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618167A (en) * | 2021-08-18 | 2021-11-09 | 陈欣瑶 | High-end supplementary chasing bar of metal circuit board for manufacturing |
| CN114571353A (en) * | 2022-04-11 | 2022-06-03 | 安徽德锐仕机床制造有限公司 | Combined type double-feed numerical control honing machine |
-
2020
- 2020-04-18 CN CN202020581065.0U patent/CN211889313U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113618167A (en) * | 2021-08-18 | 2021-11-09 | 陈欣瑶 | High-end supplementary chasing bar of metal circuit board for manufacturing |
| CN114571353A (en) * | 2022-04-11 | 2022-06-03 | 安徽德锐仕机床制造有限公司 | Combined type double-feed numerical control honing machine |
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