TWI541090B - Hourglass screw forming machine - Google Patents

Description

Hourglass type screw forming machine

The invention relates to an hourglass type screw forming machine, which can form a key groove of a workpiece in addition to a threaded portion of an hourglass type screw and a sharp edge of the threaded portion. Groove and hex work, and a single tool can be used for workpieces with different R angles.

The conventional screw forming machine has a processing technology for manufacturing an hourglass type screw. However, since the forming tool of the conventional screw forming machine can only be displaced in the left and right direction to process an hourglass type screw, A single tool can only produce a single-size hourglass type screw. If you want to process the hourglass type screw with different R angles, you must replace the tool to meet the manufacturing requirements.

Therefore, in the existing processing and molding machine for manufacturing an hourglass type screw, an hourglass type screw having different R angles can be manufactured by means of a tool change, but the price of the thread forming tool is expensive, and the manufacturing cost is relatively increased, and the tool change operation is performed. The trouble and inconvenience will also reduce production.

In addition, the keyway, groove or outer polygon on the hourglass type screw, even the processing of removing the acute angle of the thread, must be removed from the workpiece and then taken to other machines for fixing. After adjustment and correction, it must be processed. Spend a lot of time, Very troublesome, low efficiency, and high labor costs.

In order to solve the problem that the single screw cutter of the prior screw processing machine can only manufacture a single R angle hourglass type screw; the invention provides an hourglass type screw forming machine, which can be used for swinging in the left and right direction, It can be processed in the front-rear direction to meet the R angle change of the workpiece. Therefore, a single tool can process a variety of R-angle hourglass-type screws. It is also fast in manufacturing and processing without changing the tool, which can increase the output.

In order to solve the cost problem that the existing screw processing machine has to prepare various types of cutters for the manufacture of various R angle hourglass type screws, the hourglass type screw forming machine of the invention can process a plurality of R angles by a single cutter. Hourglass type screw, so the cost is low.

The hourglass type screw forming machine of the invention uses the double processing tool to remove the acute angle on the thread, and can also process the workpiece in the left and right direction or the front and rear direction on the same machine, and machine the key groove and the groove. Other processing applications such as grooves or outer polygons.

An hourglass type screw forming machine according to the present invention comprises: a base unit for receiving the following components; a lateral displacement unit disposed on the base unit and having a working And a swinging mechanism for positioning the workpiece; a swinging unit comprising a swinging seat, a worm, a worm wheel, and a motor for driving the worm, the swinging seat having a rotating shaft and a seat disposed on the rotating shaft The worm wheel is disposed on an outer peripheral side of the rotating shaft of the swinging seat, and the worm wheel meshes with the worm The motor is reversed to drive the worm to rotate forward and backward, so that the swinging seat generates a reciprocating swing; a spindle unit that provides a forming process of the screw, comprising a motor, a blade seat driven by the motor, and a a thread forming tool on the tool holder, the spindle unit is oscillated in a left-right direction by the swing unit to cause the thread forming tool to perform an hourglass-type screw forming process; and an R-angle adjusting mechanism is disposed on the swing unit And a spindle unit disposed on the top of the swing unit, a sliding portion disposed at the bottom of the spindle unit, and a power unit, the sliding portion is slidably disposed on the slider Driven by the power pack, the spindle unit can be displaced back and forth along the slider to adjust the position of the thread forming tool in the front-rear direction and change the processing R angle of the thread forming tool.

In the above-described hourglass type screw forming machine, the swing unit further includes two bearings which are sleeved on the rotating shaft for the rotating shaft to support and rotate.

The hourglass type screw forming machine described above, wherein the spindle unit has a distal end of the holder away from the workpiece such that the holder of the spindle unit and the workpiece are disposed in non-parallel.

The hourglass type screw forming machine, wherein the power group of the R angle adjusting mechanism has a motor, a motor driven screw, two bearing sleeves disposed at two ends of the screw, and a set of slips disposed on the screw a seat, the bottom of the spindle unit is fixed to the slider, and when the motor drives the screw to rotate, the slider is driven to move along the screw synchronously with the spindle unit, so that the spindle unit can be made on the swing unit Front and rear displacement.

The above-mentioned hourglass type screw forming machine, which further comprises a The supporting member is disposed at the bottom of the seat body of the swinging unit, and the supporting member is inclined, and has a wear plate contacting the seat body, an adjusting screw for adjusting the supporting member for front and rear displacement, and a locking a adjusting screw is screwed to the supporting member, the locking plate is fixed on the base unit, and the adjusting screw is rotatably sleeved on the locking plate, and when the adjusting screw is rotated, the supporting member can be operated and controlled Its wear plate moves backwards before.

The above-mentioned hourglass type screw forming machine further includes a lifting unit provided on the spindle unit, a front and rear displacement unit disposed between the spindle unit and the lifting unit, and a complex provided on the lifting unit a secondary processing unit, the front and rear displacement unit includes a sliding portion disposed at a top of the spindle unit, a sliding rail disposed at a bottom of the lifting unit, and a first power group, the sliding rail is coupled to the sliding portion By the driving of the first power group, the lifting unit can be displaced back and forth along the sliding portion; the multiple processing unit includes a second power group disposed on the lifting unit and a second power unit The second power group drives the multiple processing tool, the double processing unit can be moved up and down by the lifting unit, and can be moved back and forth by the front and rear displacement unit to approach the workpiece or away from the workpiece.

The above-mentioned hourglass type screw forming machine, wherein the lifting unit comprises: a fixing seat, the fixing seat is disposed above the spindle unit; a screw is disposed in the fixing seat; a sliding seat is capable of being up and down The sliding member is movably disposed on the front side of the fixing base, and the sliding seat has a screwing member screwed to the screw, the double processing unit is disposed on the sliding seat; and a third power group is used The screw is driven to rotate to drive the slider up and down.

The hourglass type screw forming machine, wherein the sliding portion of the front and rear displacement unit has a groove, the first power group is disposed in the groove of the sliding portion, and has a motor and a motor spindle a driving screw, two sleeves disposed at two ends of the screw, and a movable sliding seat disposed on the screw, wherein a bottom of the lifting unit is fixed to the movable sliding seat, and when the motor drives the screw to rotate, the driving The movable carriage is displaced along the screw in synchronization with the lifting unit so that the lifting unit can be displaced back and forth on the spindle unit.

The hourglass type screw forming machine, further comprising a direct displacement unit, the straight displacement unit comprises a sliding seat, a set of rail bodies, a screw, a power mechanism and a sliding sleeve; the rail system is forward and backward The sliding seat is disposed on the rail body, and is slidably disposed on the rail body, and is movable forward and backward. The swinging unit is disposed on the sliding seat; the screw is disposed on the base in the front and rear direction. In the unit, the sliding seat is screwed on the screw by the sliding sleeve, and the power mechanism provides a power source for the rotation of the screw, thereby driving the sliding seat to move forward and backward, and driving the swinging unit and the front and rear of the spindle unit mobile.

The hourglass type screw forming machine, wherein the lateral displacement unit further comprises: a transverse rail mechanism disposed laterally on the base unit, wherein the table slides left and right by the lateral rail mechanism Provided on the base unit; a screw is disposed in the base unit in a left-right direction, the table is screwed to the screw by a sliding sleeve; a power mechanism provides a power source for the screw rotation, In order to drive the table for linear displacement in the left and right direction.

The hourglass type screw forming machine described above, wherein the spindle unit Furthermore, an indexing disk and a servo motor are driven, and the servo motor drives the indexing disk and the spindle unit generates rotation.

In the above-described hourglass type screw forming machine, the front and rear displacement unit further has a pressure plate fixed to the sliding portion for adjusting the tightness between the sliding portion and the sliding rail.

In the above-described hourglass type screw forming machine, the wear plate is made of copper or copper alloy.

As described above, the hourglass type screw forming machine of the present invention can perform the functions of threading and sharpening the burrs in the order of computer automation, and the thread forming tool utilizes the swinging of the swinging unit to achieve the processing of the hourglass type screw, and The R-angle adjustment mechanism performs the operation of moving the front-rear direction of the spindle unit, so that the thread-forming tool can be adjusted in the front-rear direction, and the R angle is selected relative to the workpiece to meet the R angle change of different workpieces. In addition, the present invention can process a variety of R-angle hourglass type screws by using a single tool, and the manufacturing process is also faster, and the production can be increased, and the multiple sizes are not required. For the sake of the tool, the cost is relatively low.

In addition, by repeating the processing unit, the removal of the acute angle of the thread and the forming process of the keyway, the groove and the screw hex can be simultaneously performed on the processing machine, and the workpiece can be removed in one go without being removed and then loaded into other processing machines. The upper processing reduces the time of the upper and lower workpieces and the correction, and the production efficiency is much higher.

10‧‧‧Direct displacement unit

11‧‧‧Slide

12‧‧‧ screw

13‧‧‧Power Agency

14‧‧‧Sleeve

20‧‧‧ lateral displacement unit

21‧‧‧Workbench

22‧‧‧Clamping mechanism

221‧‧‧ chuck

222‧‧‧ thimble seat

223‧‧‧Powerplant

23‧‧‧Horizontal slide mechanism

24‧‧‧ screw

25‧‧‧Sleeve

26‧‧‧Power Agency

30‧‧‧ spindle unit

31‧‧‧Motor

32‧‧‧Tool holder

33‧‧‧Thread forming tools

34‧‧‧ Gear mechanism

35‧‧‧Pulley wheel mechanism

36‧‧‧Bevel gear

37‧‧‧Division

38‧‧‧Servo motor

40‧‧‧Swing unit

41‧‧‧Swing seat

42‧‧‧ worm

43‧‧‧ worm gear

44‧‧‧Motor

45‧‧‧ Bearing

46‧‧‧ shaft

47‧‧‧

50‧‧‧R angle adjustment mechanism

51‧‧‧Sliding Department

52‧‧‧Slide rails

53‧‧‧Power Group

531‧‧‧Motor

532‧‧‧ screw

533‧‧‧ bearing housing

534‧‧‧Slide

60‧‧‧Support members

61‧‧‧ Wear plates

62‧‧‧Adjusting screw

63‧‧‧Lock plate

70‧‧‧ Lifting unit

71‧‧‧ fixed seat

711‧‧‧ accommodating space

712‧‧‧Long opening

72‧‧‧ screw

73‧‧‧Slide

74‧‧‧ Screw joints

75‧‧‧ Third Power Group

80‧‧‧Multiple processing unit

81‧‧‧Second Power Group

82‧‧‧Multiple machining tools

811‧‧‧ mandrel

90‧‧‧ front and rear displacement unit

91‧‧‧Sliding Department

911‧‧‧ Groove

92‧‧‧rails

93‧‧‧First Power Group

931‧‧‧Motor

932‧‧‧ screw

933‧‧‧ bearing housing

934‧‧‧ bearing housing

935‧‧‧ movable slide

936‧‧‧Locks

100‧‧‧ base unit

200‧‧‧Workpiece

210‧‧‧Threaded Department

220‧‧‧ lead corner

230‧‧‧ keyway

240‧‧‧ trench

250‧‧‧ hex

15‧‧‧ Track body

94‧‧‧ pressure plate

Fig. 1 is a perspective view showing the appearance of an hourglass type screw forming machine of the present invention.

Figure 2 is a side view of the screw forming machine.

Fig. 3 is a side elevational view of the screw forming machine, showing the removal of the base unit of Fig. 1 to show a combined perspective view of the straight displacement unit, the swing unit and the R angle adjusting mechanism.

Figure 4 is a partial cross-sectional front view of an embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the combination of the direct displacement unit, the swing unit, the R angle adjusting mechanism, and the spindle unit.

Figure 6 is a cross-sectional view showing the combination of the spindle unit, the lifting unit, the double processing unit, and the front and rear displacement units.

Fig. 7 is a schematic view showing the thread forming tool forming a threaded portion of the workpiece.

Fig. 8 is a schematic view showing the guide portion formed by the double processing tool on the workpiece.

Fig. 9 is a cross-sectional view showing the hexagonal key groove formed in the workpiece.

Figure 10 is a cross-sectional view showing the groove formed by the workpiece.

Figure 11 is a cross-sectional view showing the workpiece forming a lateral keyway.

Fig. 12 is a perspective view showing the appearance of the front and rear displacement unit combined with the spindle unit.

Figure 13 is a longitudinal cross-sectional view of the front and rear displacement unit combined between the lifting unit of the spindle unit.

Figure 14 is a transverse cross-sectional view of the front and rear displacement unit combined between the lifting unit of the spindle unit.

Figure 15 is a cross-sectional view of the support member.

The hourglass type screw forming machine of the invention can perform the function of forming the thread and the sharp burr in sequence according to the computer automation, and the thread forming tool not only utilizes the swinging of the swinging unit to realize the forming process of the hourglass type screw, but also borrows The R angle adjustment mechanism performs the operation of moving the front and rear direction of the spindle unit, so that the thread forming tool can be adjusted in the front and rear direction, and the R angle is selected relative to the workpiece to meet the R angle change of different workpieces. In addition, the present invention can process a variety of R-angle hourglass type screws by using a single tool, and the manufacturing process is faster and can increase the output without replacing the tool, without the need to spare multiple sizes of tools, the cost It is also relatively inexpensive.

Referring to Figures 1 to 3, an embodiment of the hourglass type screw forming machine of the present invention includes a base unit 100 for carrying the following units, a lateral displacement unit 20, a spindle unit 30, and a swing unit. 40 and an R angle adjustment mechanism 50.

The hourglass type screw forming machine of the present invention is used to machine the threaded portion 210 and the lead angle portion 220 for a workpiece 200, and the seventh drawing shows the processing of the threaded portion 210 for the workpiece 200, and FIG. 8 shows the completed threaded portion 210. Thereafter, the processing of the lead portion 220 is performed.

As shown in FIGS. 1 and 4, the lateral displacement unit 20 is disposed on the base unit 100 and has a table 21 and a clamping mechanism 22 for positioning the workpiece 200. The lateral displacement unit 20 further includes a lateral slide mechanism 23 disposed laterally on the base unit 100. The table 21 is slidably disposed on the base unit 100 by the lateral slide mechanism 23. a screw 24 is disposed in the base unit 100 in a left-right direction. The table 21 is screwed to the screw 24 by a sliding sleeve 25; a power mechanism 26 provides a power source for the rotation of the screw 24, thereby driving the The table 21 is displaced linearly from left to right. The clamping mechanism 22 is disposed on the table 21 and includes a chuck 221, a thimble base 222 and a power unit 223. The workpiece 200 is sandwiched between the chuck 221 and the ejector pin 222. The power unit 223 drives the workpiece 200 to rotate.

As shown in FIGS. 3 and 5, the swing unit 40 includes a swinging seat 41, a worm 42, a worm wheel 43, a motor 44 for driving the worm 42 and two bearings 45. The swinging seat 41 has a rotating shaft 46. And a seat body 47 disposed on the rotating shaft 46. The two bearings 45 are disposed above and below the rotating shaft 46 for supporting and rotating the rotating shaft 46. The worm wheel 43 is disposed on the outer peripheral side of the rotating shaft 46 of the swinging seat 41, and the worm wheel 43 is The worm 42 is meshed and rotated forward and backward by the motor 44 to drive the worm 42 to rotate forward and backward, so that the swinging seat 41 pivots with the rotating shaft 46 as a fulcrum.

As shown in the first to third and fifth embodiments, the spindle unit 30 is disposed on the base 47 of the swing unit 40. The spindle unit 30 provides a forming process of the screw, and includes a motor 31 and a motor. a holder 32 of a 31 and a thread forming tool 33 disposed on the holder 32. The spindle unit 30 is driven by the swing unit 40, and swings back and forth in the left and right direction on the base unit 100 to make the thread The forming tool 33 performs molding of an hourglass type screw. In addition, a gear mechanism 34 and a belt turbine are disposed between the motor 31 and the seat 32. The structure 35 transmits the power of the motor 31 to the blade holder 32, thereby driving the thread forming tool 33 to rotate. After the motor 31 is started, it is transmitted to a gear mechanism 34 via the pulley mechanism 35, and the power is transmitted to the blade holder 32 via a bevel gear 36 to drive the thread forming tool 33 to machine the thread portion 210 to the workpiece 200 (as shown in FIG. 7). ). In addition, the spindle unit 30 further includes an indexing disk 37 and a servo motor 38 (as shown in FIG. 1). The servo motor 38 drives the indexing disk 37 and the spindle unit 30 generates rotation, and the spindle unit 30 rotates. The angle is displayed by the indexing plate 37 for adjusting the machining angle and position reference. In this embodiment, the spindle unit 30 has its end of the holder 32 obliquely away from the workpiece 200 such that the holder 32 of the spindle unit 30 and the workpiece 200 are non-parallel (refer to FIG. 1). ), the blade holder 32 is prevented from colliding with the workpiece 200 when the spindle unit 30 is swung left and right.

As shown in FIGS. 3 and 5, the R-angle adjustment mechanism 50 is disposed between the swing unit 40 and the spindle unit 30, and includes a slide rail 52 disposed on the top of the swing unit 40, and a spindle 52 disposed on the spindle. a sliding portion 51 at the bottom of the unit 30 and a power group 53. The sliding portion 51 is slidably disposed on the sliding rail 52. The spindle unit 30 can be driven along the sliding rail 52 by the driving of the power group 53. The displacement is used to adjust the position of the thread forming tool 33 in the front-rear direction, and the selection of the different R angles with respect to the workpiece 200 allows the spindle unit 30 to be processed at different R angles. The R angle adjusting mechanism 50 of the present invention can be applied to the workpiece 200 with different R angles, and the R angle adjusting mechanism 50 can be adjusted so that the spindle unit 30 can perform the operation of the hourglass type screw without changing the size. Thread forming The cutter 33 can change the R angle of the hourglass type thread on the workpiece 200. As shown in Figs. 5 and 7, when the thread forming cutter 33 is displaced forward, the R angle becomes small; otherwise, the thread forming cutter 33 is backward. When the displacement is performed, the R angle becomes large; therefore, in the machining operation, the processing of the hourglass type screw of a plurality of R angles can be achieved without changing the knife, which is convenient in processing, large in production efficiency, and can save processing and manufacturing costs.

In addition, the power unit 53 has a motor 531, a screw 532 driven by the motor 531, two bearing housings 533 disposed at two ends of the screw 532, and a set of sliding blocks 534 disposed on the screw 532. The spindle unit 30 The bottom of the bottom is fixed to the sliding block 534. When the motor 531 drives the screw 532 to rotate, the sliding block 534 is displaced along the screw 532 in synchronization with the spindle unit 30, so that the spindle unit 30 can be in the swinging unit 40. The upper and lower displacements are used to facilitate the processing of different R angles.

As shown in the first to fifth embodiments, an embodiment of the present invention further includes a direct displacement unit 10 including a slider 11, a set of rails 15, a screw 12, and a power mechanism. 13 and a sliding sleeve 14. The rail body 15 is disposed on the base unit 100 in a forward and backward direction. The slide base 11 is slidably disposed on the rail body 15 and can be moved forward and backward. The swing unit 40 is disposed on the slide seat 11 . The screw 12 is disposed in the base unit 100 in a forward and backward direction. The sliding block 11 is screwed on the screw 12 by the sliding sleeve 14 , and the power mechanism 13 provides a power source for the rotation of the screw 12 . Therefore, the slider 11 is driven to move forward and backward, and the swing unit 40 and the spindle unit 30 are driven to move backward. When the diameter of the workpiece 200 is different, for example, too large, it can be adjusted The straight displacement unit 10 retracts the spindle unit 30 to adjust the position of the thread forming tool 33 relative to the workpiece 200.

Referring to Figures 1 to 3, 5 and 15, an embodiment of the present invention further includes a support member 60 disposed obliquely on the base unit 100 and at the bottom of the base 47 of the swing unit 40, and The support member 60 is inclined, and has a wear plate 61 contacting the seat body 47, an adjusting screw 62 for adjusting the support member 60 for front and rear displacement, and a locking plate 63; the adjusting screw 62 is screwed The support member 60 is fixed to the base unit 100, and the adjusting screw 62 is rotatably sleeved on the locking plate 63. When the adjusting screw 62 is rotated, the supporting member 60 can be operated and controlled. The grinding plate 61 is moved backward in the backward direction, whereby when the wear plate 61 is worn, the adjusting member 62 can be operated by rotating the adjusting screw 62 to move the supporting member 60 and the wear plate 61 forward for contacting and supporting the seat body 47, In order to prevent the seat body 47 from falling due to excessive weight. The wear plate 61 is made of copper or a copper alloy, such as bronze. In addition to providing a supporting effect, the surface is smooth and wear resistant, and is suitable for contact when the seat body 47 is swung.

As shown in the first and second embodiments, an embodiment of the present invention further includes a lifting unit 70, a double processing unit 80, and a front and rear displacement unit 90.

As shown in FIG. 6, the lifting unit 70 includes a fixing base 71, a screw 72, a sliding seat 73, a screwing member 74 and a third power unit 75. The fixing base 71 is disposed above the main shaft unit 30. The screw 72 is disposed in the fixing base 71. The sliding seat 73 is slidably disposed on the front side of the fixing base 71, and the sliding seat 73 is screwed by the screw. The connector 74 is screwed to the screw 72, The multiple processing unit 80 is disposed on the slider 73. The third power group 75 is used to drive the screw 72 to rotate to drive the slider 73 to move up and down. The third power unit 75 in this embodiment employs a motor, such as a servo motor. An accommodating space 711 is defined in the fixing base 71 of the hoisting unit 70. The accommodating space 711 has a long opening 712 in the up-and-down direction, and the screw 72 is disposed in the accommodating space 711. Then, the long opening 712 extends into the accommodating space 711 to be screwed to the screw 72.

The double processing unit 80 includes a second power group 81 and a double processing tool 82 that are vertically disposed on the lifting unit 70. The power unit 81 is disposed on the front side of the lifting unit 70. The second power unit 81 has a spindle 811. The longitudinal machining shaft 82 is disposed directly below the spindle 811 of the second power unit 81. The secondary processing unit 80 can be moved up and down by the lifting unit 70 to access the workpiece 200 or away from the workpiece 200. The multiple processing tool 82 in this embodiment is a milling cutter that is held by the mandrel 811 and suspended above the front side of the spindle unit 30.

Similarly, since the multiple processing unit 80 is located above the lateral displacement unit 20, and the workpiece 200 is subjected to the displacement of the lateral displacement unit 20 in the left and right orientation, the workpiece 200 is caused to be opposite to the multiple processing tool 82. Displacement, a processing operation for forming a groove 240 by performing linear processing on the workpiece 200, as shown in Fig. 10, or forming a left and right orientation keyway 230 on the workpiece 200, as shown in Fig. 11. Show, or as shown in Figure 9, a hexagonal (or multi-angle) 250 machining.

As shown in the figures 12, 13, and 14, in the present embodiment, the front and rear displacement unit 90 is disposed between the spindle unit 30 and the lifting unit 70, and includes a sliding portion disposed on the top of the spindle unit 30. 91. A slide rail 92 disposed at the bottom of the lifting unit 70, and a first power unit 93. The sliding portion 91 has a groove 911 , and the first power group 93 is disposed in the groove 911 of the sliding portion 91 . The sliding rail 92 is slidably coupled to the sliding portion 91. The driving of the first power unit 93 enables the lifting unit 70 to be displaced back and forth along the sliding portion 91. The front and rear displacement unit 90 further has a pressure plate 94 fixed to the sliding portion 92, and the pressure plate 94 is disposed to adjust the tightness between the sliding portion 91 and the sliding rail 92.

The first power unit 93 has a motor 931, a screw 932 driven by a motor shaft 931, two bearing sleeves 933 and 934 disposed at two ends of the screw 932, and a movable sliding seat 935 disposed on the screw 932. And a locking member 936. In this embodiment, the movable sliding seat 935 has an internal thread and is screwed to the screw 932. The motor 931 is a servo motor and has an electromagnetic brake function. The bottom of the lifting unit 70 is fixed to the top of the movable sliding seat 935. When the motor 931 drives the screw 932 to rotate, the movable sliding seat 935 is driven to be displaced along the screw 932 in synchronization with the lifting unit 70, so that the lifting unit 70 The front and rear displacements can be made on the spindle unit 30. In this way, when the R angle of the workpiece 200 is increased, the synchronous displacement of the lifting unit 70 and the multiple processing unit 80 is driven by the first power group 93, and the secondary processing unit 80 can be The secondary machining tool 82 can be aligned to the workpiece 200 by fine adjustment correction The center point is advantageous for the processing operation of the double processing tool 82, and at the same time, the secondary processing unit 80 can be displaced and positioned by the mechanism. Therefore, in addition to the machining of the center point, eccentric machining can be performed.

Referring to FIGS. 1 and 7, after the thread forming tool 33 of the spindle unit 30 is driven via the swing unit 40 to complete the processing of the hourglass type thread portion 210 of the workpiece 200, the double processing unit 80 is then moved by the lifting unit 70. The lower displacement is such that the secondary machining tool 82 approaches the workpiece 200, and the lead portion 220 is machined to the threaded portion 210 of the workpiece 200, as shown in FIG. 8, to remove the sharp corners of the threaded portion 210 of the workpiece 200, And the workpiece 200 is made of the hexagonal (or polygonal) 250, the groove 240 and the keyway 230, and it is not necessary to remove the workpiece to work on another processing machine, and it can be done in one go.

Therefore, the hourglass type screw forming machine of the present invention not only retains the computer automation to sequentially form the thread by the thread forming tool 33, but also sharpens the burr by the double processing tool 82, and processes the functions of the keyway, the groove and the outer hexagon type. In addition, the thread forming tool 33 is further oscillated by the swinging unit 40 to achieve the processing of the hourglass type screw, and the front and rear direction is operated on the spindle unit 30 by the R angle adjusting mechanism 50, thereby allowing the thread forming tool 33. The front and rear displacements are made to meet the R angle change of the workpiece 200. Moreover, the single thread forming tool 33 can process a variety of R angle hourglass type screws, and the manufacturing process is faster and can be performed without changing the tool. The production is increased without the need to spare multiple sizes of thread forming tools 33, and the cost is relatively low.

As described above, it is only an embodiment of the present invention, when it cannot The scope of the present invention is defined by the scope of the invention, and the equivalent equivalents and modifications of the invention are intended to be within the scope of the invention.

10‧‧‧Direct displacement unit

20‧‧‧ lateral displacement unit

21‧‧‧Workbench

22‧‧‧Clamping mechanism

221‧‧‧ chuck

222‧‧‧ thimble seat

223‧‧‧Powerplant

30‧‧‧ spindle unit

32‧‧‧Tool holder

33‧‧‧Thread forming tools

35‧‧‧Pulley wheel mechanism

37‧‧‧Division

38‧‧‧Servo motor

40‧‧‧Swing unit

50‧‧‧R angle adjustment mechanism

60‧‧‧Support members

70‧‧‧ Lifting unit

80‧‧‧Multiple processing unit

81‧‧‧Power Group

82‧‧‧Multiple machining tools

811‧‧‧ mandrel

90‧‧‧ front and rear displacement unit

100‧‧‧ base unit

200‧‧‧Workpiece

Claims (13)

An hourglass type screw forming machine comprises: a base unit for supporting the following components; a lateral displacement unit disposed on the base unit and having a table and a workpiece for positioning a swinging unit, comprising: a swinging seat, a worm, a worm wheel, and a motor for driving the worm; the swinging seat has a rotating shaft and a seat body disposed on the rotating shaft, wherein the worm wheel is disposed on the rotating shaft The outer peripheral side of the rotating shaft of the swinging seat, the worm wheel meshes with the worm, and the motor rotates forward and reverse to drive the worm to rotate forward and backward, so that the swinging seat generates a reciprocating swing; and a spindle unit that provides a forming process of the screw, which includes a motor a tool holder that is driven by the motor and a thread forming tool disposed on the tool holder, the spindle unit is driven by the swing unit to swing in the left and right direction, so that the thread forming tool performs the molding process of the hourglass type screw And an R-angle adjustment mechanism disposed between the swing unit and the spindle unit, comprising a slider disposed at a top of the swing unit, and a bottom portion disposed at the bottom of the spindle unit a sliding portion and a power group, the sliding portion is slidably disposed on the slider, and the driving of the power group enables the spindle unit to be displaced back and forth along the slider to adjust the thread forming tool The position of the front and rear direction changes the processing R angle of the thread forming tool. The hourglass type screw forming machine according to claim 1, wherein the swing unit further comprises two bearings disposed on the rotating shaft for supporting and rotating the rotating shaft. An hourglass type screw forming machine according to claim 1, wherein the spindle unit has a distal end of the holder away from the workpiece such that the holder of the spindle unit and the workpiece are non-parallel. The hourglass type screw forming machine according to claim 1, wherein the power group of the R angle adjusting mechanism has a motor, a motor driven screw, two bearing sleeves disposed at two ends of the screw, and a bearing sleeve a sliding sleeve disposed on the screw, the bottom of the spindle unit is fixed to the sliding seat, and the motor drives the screw to rotate to drive the sliding seat to be displaced along the screw synchronously with the spindle unit, so that the spindle The unit can be displaced back and forth on the swing unit. The hourglass type screw forming machine according to claim 1, further comprising a supporting member disposed at a bottom of the seat body of the swinging unit, wherein the supporting member is inclined, and has a contact with the seat a wear plate of the body, an adjusting screw for adjusting the front and rear displacement of the support member, and a locking plate, the adjusting screw is screwed to the supporting member, the locking plate is fixed on the base unit, and the screw system is adjusted The locking plate is rotatably sleeved, and when the adjusting screw is rotated, the supporting member and the wear plate thereof can be operated and controlled to move backward. An hourglass type screw forming machine according to claim 1, further comprising a lifting unit disposed on the spindle unit, a front and rear displacement unit disposed between the spindle unit and the lifting unit, and a a double processing unit disposed on the lifting unit, the front and rear displacement unit includes a sliding portion disposed at a top of the spindle unit, a sliding rail disposed at a bottom of the lifting unit, and a first power group, the sliding rail And being coupled to the sliding portion to enable the lifting unit to be displaced forward and backward along the sliding portion by driving the first power group; the multiple processing unit includes a first portion disposed on the lifting unit Second power And a plurality of processing tools driven by the second power group, the double processing unit can be moved up and down by the lifting unit, and can be moved back and forth by the front and rear displacement unit to be close to the workpiece or away from the workpiece . The hourglass type screw forming machine of claim 6, wherein the lifting unit comprises: a fixing base disposed above the spindle unit; and a screw disposed in the fixing seat a sliding seat is slidably disposed on the front side of the fixing seat, and the sliding seat has a screwing member screwed to the screw, and the double processing unit is disposed on the sliding seat; And a third power group for driving the screw to rotate the slider to move up and down. The hourglass type screw forming machine according to claim 6, wherein the sliding portion of the front and rear displacement unit has a groove, and the first power group is disposed in the groove of the sliding portion and has a motor, a screw driven by the motor spindle, two bearing sleeves disposed at two ends of the screw, and a movable sliding seat disposed on the screw, the bottom of the lifting unit is fixed to the movable sliding seat, when the motor The screw is driven to rotate to drive the movable carriage to be displaced along the screw in synchronization with the lifting unit, so that the lifting unit can be displaced forward and backward on the spindle unit. The hourglass type screw forming machine of claim 1, further comprising a direct displacement unit, the straight displacement unit comprising a sliding seat, a set of rail bodies, a screw, a power mechanism and a sliding The rail system is disposed on the base unit in a forward and backward direction, and the sliding seat is slidably disposed on the rail body, and can be moved forward and backward, and the swinging unit is disposed on the sliding seat; the screw system is Aligned in the machine base unit, the slide seat is screwed on the screw by the sliding sleeve, and the power mechanism provides a power source for the rotation of the screw, thereby driving the sliding seat to move forward and backward, thereby driving Swing unit and spindle unit before backward shift move. The hourglass type screw forming machine of claim 1, wherein the lateral displacement unit further comprises: a transverse rail mechanism disposed laterally on the base unit, wherein the table is The horizontal slide rail mechanism is slidably disposed on the base unit in a lateral direction; a screw is disposed in the base unit in a left-right direction, and the worktable is screwed to the screw by a sliding sleeve; A source of power for the rotation of the screw is provided to drive the table for linear displacement in the left and right direction. The hourglass type screw forming machine according to claim 1, wherein the spindle unit further comprises an indexing disk and a servo motor, the servo motor driving the indexing plate and the spindle unit to rotate. The hourglass type screw forming machine according to claim 6, wherein the front and rear displacement unit further has a pressure plate fixed to the sliding portion for adjusting the tightness between the sliding portion and the sliding rail. The hourglass type screw forming machine according to claim 5, wherein the wear plate is made of copper or copper alloy.