CN102962533A - Internal thread processing clamp and processing method thereof - Google Patents
Internal thread processing clamp and processing method thereof Download PDFInfo
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- CN102962533A CN102962533A CN2012104488246A CN201210448824A CN102962533A CN 102962533 A CN102962533 A CN 102962533A CN 2012104488246 A CN2012104488246 A CN 2012104488246A CN 201210448824 A CN201210448824 A CN 201210448824A CN 102962533 A CN102962533 A CN 102962533A
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- internal thread
- drill
- knife bar
- anchor clamps
- thread machining
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Abstract
The invention discloses an internal thread processing clamp and a processing method thereof, and the internal thread processing clamp which comprises a cutter bar, wherein a cutter bar cavity is opened formed inside the cutter bar; a jacket is installed inside the cutter bar cavity; the jacket is composed of a jacket head and a jacket body; the jacket head is located outside the cutter bar; the cutter bar cavity is sleeved inside the jacket body; a spring is arranged between the jacket head and the end face of the cutter bar; a tension springs is are arranged between the jacket head and the cutter bar cavity; a sliding groove is opened onformed in the cutter bar; and a sliding pin is arranged inside the sliding groove. The purpose of the invention is to provide the internal thread processing clamp and the processing method thereof; the internal thread processing clamp is simple in structure; the whole process of internal thread processing can be realized on a common numerically controlled lathe; the internal thread processing clamp and the processing method thereof has have the advantages that the production cost is reduced, the product quality is improved, and the labour intensity of operators is largely reduced, thereby effectively improving the work efficiency.
Description
Technical field
The present invention relates to a kind of internal thread machining anchor clamps and processing method thereof.
Background technology
Bent axle is the core component of the internal combustion engines such as gasoline engine, diesel engine, is the power resources of automobile, diesel locomotive, generator etc.And the Crankshaft Machining operation is many, and required precision is high, and production line is badly in need of reform.Crankshaft output end tapping internal thread particularly, because the diameter of thread is little, quality requirement is high, is the bottleneck operation of the normal circulation of superzapping production line always.
Engine lathe is taken centre frame and is carried out manual operations, pass through centering, beat thread Pilot hole, tapping three road manufacturing procedures, and centering, beat thread Pilot hole, tapping is to rely on the manual seat of wagging the tail to finish.Shaking to and fro tailstock changes successively centre drill, drill bit, screw tap and makes the amount of labour very large, because accuracy of thread requires high, specification requirement to the operative employee is also very harsh, even experienced actuator also can because human factor causes that quality fluctuation is large, be difficult to control product quality.The manual processing of former U.S. axle is because screw thread pine, above, the not first-class quality problems of screw thread effective length of no-go gage two circles often can appear in human factor.
Centre numerically controlled lathe is not also taken the precedent of centre frame processing.And centre numerically controlled lathe does not possess again the function of rigid tapping.
Summary of the invention
The object of the present invention is to provide a kind of internal thread machining anchor clamps and processing method thereof, its internal thread machining clamp structure is simple, can realize at centre numerically controlled lathe the whole process of internal thread machining, its processing method of internal thread machining anchor clamps improves the quality of product when reducing production costs, greatly reduce operator's labour intensity, thus Effective Raise operating efficiency.
In order to reach above-mentioned purpose, technical scheme of the present invention is:
A kind of internal thread machining anchor clamps comprise knife bar, offer the knife bar cavity in knife bar; In the described knife bar cavity chuck is installed, chuck is comprised of chuck head and jacket body; Described chuck head is positioned at the knife bar outside, is socketed on the knife bar cavity in the jacket body; Between described chuck head and the knife bar end face spring is installed, between chuck head and the knife bar cavity extension spring is installed; Offer sliding tray on the described knife bar, sliding pin is installed in the sliding tray.
Two extension springs are installed between described chuck head and the knife bar cavity.
Described extension spring and chuck head are connected by the first screw; Described extension spring and knife bar cavity are connected by the second screw.
A kind of processing method of internal thread machining anchor clamps comprises the steps:
1) at first at numerically controlled lathe bent axle is installed, cutter hub, fluted drill drill bushing, internal thread machining anchor clamps then are installed respectively on Tool-rest of Numerical Control Lathe, then in cutter hub, distinguish mounting center drill bushing, lathe tool, then mounting center is bored in the drill bushing of center, then in the fluted drill drill bushing, fluted drill is installed, in the internal thread machining anchor clamps, screw tap is installed at last;
2) after described step 1 installs, at first rotate cutter hub and make lathe tool aim at machining crankshafts, then with the chamfering of lathe tool car 45 degree, then use the lathe tool face work;
3) behind the complete end face of described step 2 car, follow mobile cutter hub and make centre drill aim at machining crankshafts, then use the centre drill drill centers;
4) after described step 3 has been bored centre bore, at first rotating the fluted drill drill bushing and make fluted drill aim at machining crankshafts, is 26-32mm with the Twist Drill degree of depth then, and its speed of mainshaft is 400-650r/min, and the per minute feeding is 60-120mm/min;
5) after described step 4 has been bored degree of depth hole, at first rotating the internal thread machining anchor clamps and make screw tap aim at machining crankshafts, is 22-28mm with the tap tapping degree of depth then, and its speed of mainshaft is 100-300r/min, and the revolution feeding is 1.0-1.1mm/r.
The lathe tool that is installed in the described step 1 on the cutter hub is the 91o lathe tool.
The centre drill that is installed in the described step 1 in the drill bushing of center is the A4 centre drill.
The fluted drill that is installed in the described step 1 in the fluted drill drill bushing is the fluted drill of ￠ 8.4mm, and the Twist Drill degree of depth is 29mm, and its speed of mainshaft is 450-600r/min, and the per minute feeding is 80-100mm/min.
The screw tap that is installed in the described step 1 in the internal thread machining anchor clamps is 3/8 "-the 24UNF screw tap, the tap tapping degree of depth is 25mm, and its speed of mainshaft is 150-250r/min, and the revolution feeding is 1.058mm/r.
Beneficial effect of the present invention is: a kind of internal thread machining anchor clamps provided by the invention and processing method thereof, its internal thread machining clamp structure is simple, because knife bar is connected the whole process that makes screw tap can realize at centre numerically controlled lathe internal thread machining with the elasticity of chuck, its processing method of this internal thread machining anchor clamps improves the quality of product when reducing production costs, greatly reduce operator's labour intensity, thus Effective Raise operating efficiency.
Description of drawings
Fig. 1 is the structural representation of internal thread machining anchor clamps of the present invention;
Fig. 2 is the structural representation of the clamping lathe tool device behind centre drill and the lathe tool of packing in the embodiment of the invention;
Fig. 3 is the structural representation of the fluted drill clamping drill bushing behind the fluted drill of packing in the embodiment of the invention;
Fig. 4 is the structural representation of the internal thread machining anchor clamps behind the screw tap of packing in the embodiment of the invention.
Specific embodiment
Embodiment 1
As shown in Figure 1, a kind of internal thread machining anchor clamps of present embodiment comprise knife bar 1, offer knife bar cavity 2 in knife bar 1; In the described knife bar cavity 2 chuck 3 is installed, chuck 3 is comprised of chuck head 10 and jacket body 11; Described chuck head 10 is positioned at knife bar 1 outside, is socketed on knife bar cavity 2 in the jacket body 11; Between described chuck head 10 and knife bar 1 end face spring 4 is installed, two extension springs 6 are installed between chuck head 10 and the knife bar cavity 2; Offer sliding tray 5 on the described knife bar 1, sliding pin 7 is installed in the sliding tray 5.Described extension spring 6 is connected by the first screw 8 with chuck head 10.Described extension spring 6 is connected by the second screw 9 with knife bar cavity 2.
The screw taps of different model can be installed in the chuck head 10, be installed in the not only fixedly extension spring 6 of the first screw 8 in the chuck head 10, also fixing screw tap.Offer sliding tray 5 on the knife bar 1, sliding pin 7 is installed in the sliding tray 5.Sliding pin 7 can be by fixing with the position movement of two extension springs 6, thereby chuck 3 can be moved forward and backward.Between chuck head 10 and knife bar 1 end face spring 4 is installed.In process, the power that spring 4 can provide screw tap to advance; When screw tap ran into powerful resistance, spring 4 compressions can be regulated screw tap by the fixed position between sliding pin 7 and the extension spring 6, prevent that screw tap from collapsing tooth or mashed tooth.
Such as Fig. 2, Fig. 3, shown in Figure 4, the processing method of a kind of internal thread machining anchor clamps of present embodiment, comprise the steps: first, at first at numerically controlled lathe bent axle is installed, cutter hub 12, fluted drill drill bushing 16, internal thread machining anchor clamps 19 then are installed respectively on Tool-rest of Numerical Control Lathe, then at cutter hub 12 interior respectively mounting center drill bushing 13,91o lathe tools 15, then at center drill bushing 13 interior installation A4 centre drills 14, then at the fluted drills 17 of the interior installation of fluted drill drill bushing 16 ￠ 8.4mm, at last in the 19 interior installations 3/8 of internal thread machining anchor clamps "-screw tap 18 of 24UNF.The second, after described step 1 installs, at first to rotate cutter hub 12 and make 91o lathe tool 15 aim at machining crankshafts, then the chamfering of then spending with lathe tool 15 cars 45 of 91o uses 91o lathe tool 15 face work.The 3rd, behind the complete end face of described step 2 car, follow mobile cutter hub 12 and make A4 centre drill 14 aim at machining crankshafts, then with A4 centre drill 14 drill centers.The 4th, after described step 3 has been bored centre bore, at first rotate fluted drill drill bushing 16 and make the fluted drill 17 of ￠ 8.4mm aim at machining crankshafts, then fluted drill 17 drilling depths with ￠ 8.4mm are 26mm, and its speed of mainshaft is 400r/min, and the per minute feeding is 60mm/min.The 5th, after described step 4 has been bored degree of depth hole, at first rotate internal thread machining anchor clamps 19 and make 3/8 "-screw tap of 24UNF 18 aims at machining crankshafts; then with 3/8 "-screw tap 18 tapping depths of 24UNF are 22mm, its speed of mainshaft is 100r/min, the revolution feeding is 1.0mm/r, machines and retreats 3/8 "-screw tap 18 of 24UNF, finish whole internal thread machining process.
A kind of internal thread machining anchor clamps that present embodiment provides and the beneficial effect of processing method thereof are: internal thread machining anchor clamps simple in structure, because knife bar is connected the whole process that makes screw tap can realize at centre numerically controlled lathe internal thread machining with the elasticity of chuck, its processing method of this internal thread machining anchor clamps improves the quality of product when reducing production costs, greatly reduce operator's labour intensity, thus Effective Raise operating efficiency.
As shown in Figure 1, a kind of internal thread machining anchor clamps of present embodiment comprise knife bar 1, offer knife bar cavity 2 in knife bar 1; In the described knife bar cavity 2 chuck 3 is installed, chuck 3 is comprised of chuck head 10 and jacket body 11; Described chuck head 10 is positioned at knife bar 1 outside, is socketed on knife bar cavity 2 in the jacket body 11; Between described chuck head 10 and knife bar 1 end face spring 4 is installed, two extension springs 6 are installed between chuck head 10 and the knife bar cavity 2; Offer sliding tray 5 on the described knife bar 1, sliding pin 7 is installed in the sliding tray 5.Described extension spring 6 is connected by the first screw 8 with chuck head 10.Described extension spring 6 is connected by the second screw 9 with knife bar cavity 2.
The screw taps of different model can be installed in the chuck head 10, be installed in the not only fixedly extension spring 6 of the first screw 8 in the chuck head 10, also fixing screw tap.Offer sliding tray 5 on the knife bar 1, sliding pin 7 is installed in the sliding tray 5.Sliding pin 7 can be by fixing with the position movement of two extension springs 6, thereby chuck 3 can be moved forward and backward.Between chuck head 10 and knife bar 1 end face spring 4 is installed.In process, the power that spring 4 can provide screw tap to advance; When screw tap ran into powerful resistance, spring 4 compressions can be regulated screw tap by the fixed position between sliding pin 7 and the extension spring 6, prevent that screw tap from collapsing tooth or mashed tooth.
Such as Fig. 2, Fig. 3, shown in Figure 4, the processing method of a kind of internal thread machining anchor clamps of present embodiment, comprise the steps: first, at first at numerically controlled lathe bent axle is installed, cutter hub 12, fluted drill drill bushing 16, internal thread machining anchor clamps 19 then are installed respectively on Tool-rest of Numerical Control Lathe, then at cutter hub 12 interior respectively mounting center drill bushing 13,91o lathe tools 15, then at the center drill bushing 13 interior centre drills 14 that A4 are installed, then at the fluted drills 17 of the interior installation of fluted drill drill bushing 16 ￠ 8.4mm, at last in the 19 interior installations 3/8 of internal thread machining anchor clamps "-screw tap 18 of 24UNF.The second, after described step 1 installs, at first rotate cutter hub 12 and make 91o lathe tool 15 aim at machining crankshafts, then with the chamfering of 91o lathe tool 15 cars 45 degree, then use 91o lathe tool 15 face work.The 3rd, behind the complete end face of described step 2 car, follow mobile cutter hub 12 and make A4 centre drill 14 aim at machining crankshafts, then with A4 centre drill 14 drill centers.The 4th, after described step 3 has been bored centre bore, at first rotate fluted drill drill bushing 16 and make the fluted drill 17 of ￠ 8.4mm aim at machining crankshafts, then fluted drill 17 drilling depths with ￠ 8.4mm are 32mm, and its speed of mainshaft is 650r/min, and the per minute feeding is 120mm/min.The 5th, after described step 4 has been bored degree of depth hole, at first rotate internal thread machining anchor clamps 19 and make 3/8 "-screw tap of 24UNF 18 aims at machining crankshafts; then with 3/8 "-screw tap 18 tapping depths of 24UNF are 28mm, its speed of mainshaft is 300r/min, the revolution feeding is 1.1mm/r, machines and retreats 3/8 "-screw tap 18 of 24UNF, finish whole internal thread machining process.
A kind of internal thread machining anchor clamps that present embodiment provides and the beneficial effect of processing method thereof are: internal thread machining anchor clamps simple in structure, because knife bar is connected the whole process that makes screw tap can realize at centre numerically controlled lathe internal thread machining with the elasticity of chuck, its processing method of this internal thread machining anchor clamps improves the quality of product when reducing production costs, greatly reduce operator's labour intensity, thus Effective Raise operating efficiency.
As shown in Figure 1, a kind of internal thread machining anchor clamps of present embodiment comprise knife bar 1, offer knife bar cavity 2 in knife bar 1; In the described knife bar cavity 2 chuck 3 is installed, chuck 3 is comprised of chuck head 10 and jacket body 11; Described chuck head 10 is positioned at knife bar 1 outside, is socketed on knife bar cavity 2 in the jacket body 11; Between described chuck head 10 and knife bar 1 end face spring 4 is installed, two extension springs 6 are installed between chuck head 10 and the knife bar cavity 2; Offer sliding tray 5 on the described knife bar 1, sliding pin 7 is installed in the sliding tray 5.Described extension spring 6 is connected by the first screw 8 with chuck head 10.Described extension spring 6 is connected by the second screw 9 with knife bar cavity 2.
The screw taps of different model can be installed in the chuck head 10, be installed in the not only fixedly extension spring 6 of the first screw 8 in the chuck head 10, also fixing screw tap.Offer sliding tray 5 on the knife bar 1, sliding pin 7 is installed in the sliding tray 5.Sliding pin 7 can be by fixing with the position movement of two extension springs 6, thereby chuck 3 can be moved forward and backward.Between chuck head 10 and knife bar 1 end face spring 4 is installed.In process, the power that spring 4 can provide screw tap to advance; When screw tap ran into powerful resistance, spring 4 compressions can be regulated screw tap by the fixed position between sliding pin 7 and the extension spring 6, prevent that screw tap from collapsing tooth or mashed tooth.
Such as Fig. 2, Fig. 3, shown in Figure 4, the processing method of a kind of internal thread machining anchor clamps of present embodiment, comprise the steps: first, at first at numerically controlled lathe bent axle is installed, cutter hub 12, fluted drill drill bushing 16, internal thread machining anchor clamps 19 then are installed respectively on Tool-rest of Numerical Control Lathe, then at cutter hub 12 interior respectively mounting center drill bushing 13,91o lathe tools 15, then at center drill bushing 13 interior installation A4 centre drills 14, then at the fluted drills 17 of the interior installation of fluted drill drill bushing 16 ￠ 8.4mm, at last in the 19 interior installations 3/8 of internal thread machining anchor clamps "-screw tap 18 of 24UNF.The second, after described step 1 installs, at first rotate cutter hub 12 and make 91o lathe tool 15 aim at machining crankshafts, then with the chamfering of 91o lathe tool 15 cars 45 degree, then use 91o lathe tool 15 face work.The 3rd, behind the complete end face of described step 2 car, follow mobile cutter hub 12 and make A4 centre drill 14 aim at machining crankshafts, then with A4 centre drill drill centers.The 4th, after described step 3 has been bored centre bore, at first rotate fluted drill drill bushing 16 and make the fluted drill 17 of ￠ 8.4mm aim at machining crankshafts, then fluted drill 17 drilling depths with ￠ 8.4mm are 29mm, and its speed of mainshaft is 500r/min, and the per minute feeding is 90mm/min.The 5th, after described step 4 has been bored degree of depth hole, at first rotate internal thread machining anchor clamps 19 and make 3/8 "-screw tap of 24UNF 18 aims at machining crankshafts; then with 3/8 "-screw tap 18 tapping depths of 24UNF are 25mm, its speed of mainshaft is 180r/min, the revolution feeding is 1.058mm/r, machines and retreats 3/8 "-screw tap 18 of 24UNF, finish whole internal thread machining process.
A kind of internal thread machining anchor clamps that present embodiment provides and the beneficial effect of processing method thereof are: internal thread machining anchor clamps simple in structure, because knife bar is connected the whole process that makes screw tap can realize at centre numerically controlled lathe internal thread machining with the elasticity of chuck, its processing method of this internal thread machining anchor clamps improves the quality of product when reducing production costs, greatly reduce operator's labour intensity, thus Effective Raise operating efficiency.
Claims (8)
1. internal thread machining anchor clamps is characterized in that: comprise knife bar (1), offer knife bar cavity (2) in knife bar (1); Chuck (3) is installed in the described knife bar cavity (2), and chuck (3) is comprised of chuck head (10) and jacket body (11); Described chuck head (10) is positioned at knife bar (1) outside, is socketed on knife bar cavity (2) in the jacket body (11); Between described chuck head (10) and knife bar (1) end face spring (4) is installed, between chuck head (10) and the knife bar cavity (2) extension spring (6) is installed; Offer sliding tray (5) on the described knife bar (1), sliding pin (7) is installed in the sliding tray (5).
2. a kind of internal thread machining anchor clamps according to claim 1 is characterized in that: between described chuck head (10) and the knife bar cavity (2) two extension springs (6) are installed.
3. a kind of internal thread machining anchor clamps according to claim 1 is characterized in that: described extension spring (6) is connected by the first screw (8) with chuck head (10); Described extension spring (6) is connected by the second screw (9) with knife bar cavity (2).
4. the processing method of a kind of internal thread machining anchor clamps according to claim 1 is characterized in that comprising the steps:
At first at numerically controlled lathe bent axle is installed, cutter hub (12), fluted drill drill bushing (16), internal thread machining anchor clamps (19) then are installed respectively on Tool-rest of Numerical Control Lathe, then in cutter hub (12), distinguish mounting center drill bushing (13), lathe tool (15), then mounting center is bored (14) in center drill bushing (13), fluted drill (17) then is installed in fluted drill drill bushing (16), screw tap (18) is installed in internal thread machining anchor clamps (19) at last;
After described step 1 installs, at first rotate cutter hub (12) and make lathe tool (15) aim at machining crankshafts, then with the chamfering of lathe tool (15) car 45 degree, then use lathe tool (15) face work;
Behind the complete end face of described step 2 car, follow mobile cutter hub (12) and make centre drill (14) aim at machining crankshafts, then with centre drill (14) drill centers;
After described step 3 has been bored centre bore, at first rotating fluted drill drill bushing (16) makes fluted drill (17) aim at machining crankshafts, be 26-32mm with fluted drill (17) drilling depth then, its speed of mainshaft is 400-650r/min, and the per minute feeding is 60-120mm/min;
After described step 4 has been bored degree of depth hole, at first rotating internal thread machining anchor clamps (19) makes screw tap (18) aim at machining crankshafts, be 22-28mm with screw tap (18) tapping depth then, its speed of mainshaft is 100-300r/min, and the revolution feeding is 1.0-1.1mm/r.
5. the processing method of a kind of internal thread machining anchor clamps according to claim 4, it is characterized in that: the lathe tool (15) that is installed in the described step 1 on the cutter hub (12) is the 91o lathe tool.
6. the processing method of a kind of internal thread machining anchor clamps according to claim 4 is characterized in that: the centre drill (14) that is installed in the described step 1 in the center drill bushing (13) is the A4 centre drill.
7. the processing method of a kind of internal thread machining anchor clamps according to claim 4, it is characterized in that: the fluted drill (17) that is installed in the described step 1 in the fluted drill drill bushing (16) is the fluted drill of ￠ 8.4mm, fluted drill (17) drilling depth is 29mm, its speed of mainshaft is 450-600r/min, and the per minute feeding is 80-100mm/min.
8. the processing method of a kind of internal thread machining anchor clamps according to claim 4, it is characterized in that: the screw tap (18) that is installed in the described step 1 in the internal thread machining anchor clamps (19) is 3/8 "-the 24UNF screw tap; screw tap (18) tapping depth is 25mm; its speed of mainshaft is 150-250r/min, and the revolution feeding is 1.058mm/r.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210448824.6A CN102962533B (en) | 2012-11-09 | 2012-11-09 | Internal thread processing clamp and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210448824.6A CN102962533B (en) | 2012-11-09 | 2012-11-09 | Internal thread processing clamp and processing method thereof |
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| Publication Number | Publication Date |
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| CN102962533A true CN102962533A (en) | 2013-03-13 |
| CN102962533B CN102962533B (en) | 2015-03-18 |
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| CN201210448824.6A Expired - Fee Related CN102962533B (en) | 2012-11-09 | 2012-11-09 | Internal thread processing clamp and processing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104191048A (en) * | 2014-08-14 | 2014-12-10 | 梧州市旺捷机械制造有限公司 | Internally threaded pipe fitting machining method |
| CN104259595A (en) * | 2014-08-14 | 2015-01-07 | 梧州市旺捷机械制造有限公司 | Spline machining tool |
| CN104289863A (en) * | 2014-08-14 | 2015-01-21 | 梧州市旺捷机械制造有限公司 | Spline machining method |
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| CZ295167B6 (en) * | 2002-12-18 | 2005-06-15 | Západočeská Univerzita V Plzni | Device for clamping tools in machine-tool spindle |
| CN201768974U (en) * | 2010-08-17 | 2011-03-23 | 鞍山钢铁集团公司 | Quick-change tap clamping device |
| CN102423854A (en) * | 2011-09-30 | 2012-04-25 | 刘成义 | Threaded drilling and tapping cutter at end of novel crankshaft timing gear |
| CN202292147U (en) * | 2011-09-30 | 2012-07-04 | 刘成义 | Novel crankshaft timing gear end thread drilling tapping cutter head |
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| JPS5391488A (en) * | 1976-12-22 | 1978-08-11 | Moatti Henri | Drilling and thread cutting machine |
| CZ295167B6 (en) * | 2002-12-18 | 2005-06-15 | Západočeská Univerzita V Plzni | Device for clamping tools in machine-tool spindle |
| CN201768974U (en) * | 2010-08-17 | 2011-03-23 | 鞍山钢铁集团公司 | Quick-change tap clamping device |
| CN102423854A (en) * | 2011-09-30 | 2012-04-25 | 刘成义 | Threaded drilling and tapping cutter at end of novel crankshaft timing gear |
| CN202292147U (en) * | 2011-09-30 | 2012-07-04 | 刘成义 | Novel crankshaft timing gear end thread drilling tapping cutter head |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104191048A (en) * | 2014-08-14 | 2014-12-10 | 梧州市旺捷机械制造有限公司 | Internally threaded pipe fitting machining method |
| CN104259595A (en) * | 2014-08-14 | 2015-01-07 | 梧州市旺捷机械制造有限公司 | Spline machining tool |
| CN104289863A (en) * | 2014-08-14 | 2015-01-21 | 梧州市旺捷机械制造有限公司 | Spline machining method |
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| CN102962533B (en) | 2015-03-18 |
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Inventor after: Wang Xiaocui Inventor after: Zhu Zhenrong Inventor before: Zhu Zhenrong |
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