CN2261906Y - Multifunctional automatic thread machine for cutting steel bar - Google Patents

Abstract

The utility model relates to a multifunctional thread machine for automatically cutting a steel bar, which is provided with a cutter device used for regulating and cutting threads and is used for processing threads at the end of a steel bar, and the multifunctional thread machine is composed of a workpiece holder, a thread cutting mechanism, a feeding mechanism, etc. which are assembled on a machine base. When a cutting head is rotated to cut, the opening and the closing of a cutter base are controlled by an explorator pin, wherein one end of the explorator pin is fixedly arranged on a cutter base body, the other end of the explorator pin is held in a longitudinal tooth-shaped die impression of a tooth-shaped module, and the operation of the automatic or the manual advance-retreat of the feeding mechanism can be realized by a couple of worm gear pairs. When a clutch engages, the worm gear pairs are equal to a couple of screw rod nuts, and the feeding mechanism can be automatically advanced or retreated. When the clutch disengages, the worm gear pairs become into a couple of gear and rack mechanisms, and the feeding mechanism can be manually advanced or retreated by rotating a handle.

Description

Multi-functional automatic cutting screw thread steel machine

The utility model relates to a kind of special-shaped screw thread of adjusting chasing cutter arrangement processing steel bar end or multi-functional automatic cutting screw thread steel machine of straight shape screw thread of having.

Existing screw thread steel connects the process equipment of termination, comprise that we once were called with name, " the dual-purpose die head threading machine of reinforcing bar awl straight thread " accurate patented product of (patent No. is CN90205388.4) newspaper, generally all only has manual feed function, this not only makes labor intensity of operating personnel excessive, and production efficiency is low, but also needs to rely on people's feel and the quality that experience is controlled workpiece, therefore be difficult to make the end product quality conformance to standard, percent defective is higher.

It is simple that the purpose of this utility model provides a kind of complete machine structure, flexible operation mode, both can make thread-cutting tool regulate feeding automatically, but the novel cutting screw thread steel machine of joint screw of steel bar end processing is finished in hand feed again.

For achieving the above object, our technical measures are transformed on the basis in former declaring " the dual-purpose die head threading machine of reinforcing bar awl straight thread " patented technology (patent No. CN90205388.3): the utility model also is by work holder screw thread cutting mechanism (comprising positioning regulating mechanism), feed mechanism is fitted on the support and constitutes, its screw thread cutting mechanism is fitted in the core hole of locating rack by the rotary cutting head to constitute, different is, thread form module in the rotary cutting head is in the axial slide that is fitted on the outer cylinder body sidewall, slide before and after can only doing axially therein, outer cylinder body is to be slidingly matched device in the core hole of locating rack, both rotatable, slippage before and after can carrying out axially again, the die body that the thread form module is given prominence to outside the axial slide of outer cylinder body partly is fitted in the cannelure of offering on the core hole wall of locating rack by card, installing the front end position of Cutter apron device in outer cylinder body core hole of compound thread cutting edge, the frame mode of Cutter apron still edge with the dual-purpose die head threading machine of reinforcing bar awl straight thread, just the utility model is the opening and closing campaign of controlling the Cutter apron of assembling in the outer cylinder body with the pattern pin, one termination portion of pattern pin is packed on the cutting knife pedestal, other end head then is snap-fit in vertical thread form die cavity of thread form module, when the rotary cutting head is cut into, the thread form that the pattern pin is promptly set by the thread form die cavity is pining down Cutter apron or is opening or close, and cutting goes out required steel bar end screw thread.Feed mechanism of the present utility model is that automatic, the hand feed conversion equipment that main body constitutes formed by speed-changing driving device with a pair of worm gear, the rotary cutting head connect with the reducer output shaft of speed-changing driving device and by driving, the bearing block of cylindrical worm is to parallel with the slide rail of speed-changing driving device on support with its shaft core line, be packed on the casing of speed-changing driving device, cylindrical worm is moved by speed-changing driving device; The supporting base of the mandrel of the worm gear that is meshed with cylindrical worm then is to be packed on the support, worm gear and its mandrel are installing, the stator pawl that is sleeved on the clutch on the worm gear mandrel can be packed on the end face of supporting base of worm gear mandrel, the moving plate pawl that is packed in the clutch on the handle core hole end surface is to be fitted in by being slidingly matched on the axle rank that install straight key on the worm gear mandrel with keyway, be the moving plate pawl of handle and clutch on the mandrel of worm gear can only before and after straight line slippage and can not rotating, the handle of control feed mechanism automatic or manual feed function conversion and the moving plate pawl of clutch can design make as a whole, when allowing the moving plate pawl of clutch and the interlock of stator pawl, worm gear just can not rotate, at this moment, this just is the equal of a pair of feed screw nut's transmission mechanism to worm gear, according to turning to of cylindrical worm, the limitation travel switch of adapting device on support can be realized the advance and retreat of feed mechanism; The moving plate pawl and the stator pawl of clutch are thrown off, promptly allow worm gear and mandrel thereof rotate voluntarily, though cylindrical worm is still rotating, but whole feed mechanism (exactly, should be the reduction case of speed-changing driving device) just stopped auto-feed or return, this moment, this can be used as a pair of pinion and rack use again to worm gear, worm gear promptly is the equal of a driving gear, the cylindrical worm that is being meshed with it just is the equal of a tooth bar, rotary handle rotates worm gear, just can make the feed mechanism hand feed or returns.

This novel cutting screw thread steel machine is controlled the opening and closing of Cutter apron with the slippage of pattern pin in the thread form die cavity of thread form module, can guarantee the steel bar end thread size conformance to standard that cutting goes out effectively; Realize handling the automatic or manual advance and retreat of feed mechanism with a pair of worm gear, entire mechanism is very simple and practical.Be used as feed screw nut's transmission mechanism and pinion and rack is used for same equipment with a pair of worm gear, this is that traditional concept is elusive.

Below, will describe in detail preferred embodiment of the utility model in conjunction with the accompanying drawings:

Fig. 1 is a complete machine structure schematic diagram of the present utility model;

Fig. 2 is the structural representation of rotary cutting head;

Fig. 3 be of the present utility model automatically, a kind of version schematic diagram of manual switching device.

In complete machine, work holder (1) needs to design according to the shape facility of workpiece to be processed and the requirement of processing technology, does not belong to the content of introducing of the present utility model, also just omits here and does not talk.And the locating rack (2) in the screw thread cutting mechanism and be fitted in the outer cylinder body (3) of rotary cutting head, installing the structure and the assembly relation situation of the Cutter apron (15) of compound thread section (4), basic is that former " the dual-purpose die head threading machine of reinforcing bar awl straight thread " is identical, in former patent specification, describe in detail, here also no longer repeat.Speed-changing driving device in the feed mechanism is still by decelerator (5) and motor (6) assembling and constitutes.For transmission and equipped cylindrical worm (9), can be at a gearbox of output head fixing device (4) of decelerator (5), the bearing block of cylindrical worm (9) one ends is arranged on the housing of gearbox (4), the bearing block of the other end (7) is packed on the casing of decelerator (5), the concrete setting position of cylindrical worm (9) can determine according to complete machine structure situation design, if can guarantee its shaft core line can with feed mechanism support (8) go up the guide rail of slippage parallel and be convenient to worm gear (10) that device is meshed with it be suitable.Structure as for the gear transmission chain of the transmission cylindrical worm of being adorned in the gearbox (4) (9) can design according to the feed speed of feed mechanism.The mutually equipped chute of thread form module (12) on outer cylinder body (3) sidewall can be T word groove, it also can be dovetail groove, pattern pin (13) is packed on Cutter apron (15) body that compound thread cutting edge (14) are housed with the baseplane of shaft core line perpendicular to the chute of thread form module (12) on outer cylinder body (3) sidewall.Because feed velocity limits, the sliding speed of pattern pin (13) in the thread form die cavity of thread form module (12) is not very fast naturally, so be installed on the sliding sleeve that a end in the thread form die cavity needn't the making of suit wear-resistant material at pattern pin (13).The simplest rotating manner of rotary cutting head is to connect transmission with flange (16) with the speed-changing driving device of feed mechanism.After what waiting slow down by decelerator (5) and gearbox (4), the rotating speed of cylindrical worm (9) is very slow, gets final product so cylindrical worm (9) is only made single start worm.The supporting base (17) at mandrel (18) two ends of the worm gear (10) that is meshed with cylindrical worm (9) and the installation site and the mode of (19); Can unifiedly when complete machine master-plan and support (8) design consider, perhaps be set directly on the support (8).Be sleeved on the simplest frame mode of clutch on the mandrel (18) of worm gear (10) and be exactly the groove pawl buckle mutually of moving plate pawl and stator pawl of slippaging, rotate with restriction mandrel (18).Device has the supporting base (17) of stator pawl to cast to make integral body, and this can guarantee its mechanism structure intensity, and the moving plate pawl of clutch is preferably made one with handle (11) too, both has been convenient to operation, and is not fragile again.

Claims (1)

1. multi-functional automatic cutting screw thread steel machine, it is by work holder (1) and screw thread cutting mechanism, feed mechanism is fitted in support (8) and goes up formation, the rotary cutting head of screw thread cutting mechanism is fitted in the core hole of locating rack (2), it is characterized in that: the thread form module (12) in the rotary cutting head is fitted in the axial slide on outer cylinder body (3) sidewall, the die body that thread form module (12) is given prominence to outside the axial slide of outer cylinder body (3) partly limits card to be fitted in the cannelure of offering on locating rack (2) the core hole wall, installing the leading portion position of Cutter apron (15) device in outer cylinder body (3) core hole of compound thread cutting edge (14), one termination portion of pattern pin (13) is packed on Cutter apron (15) body, and other end head is installed in vertical thread form die cavity of thread form module (12); Described feed mechanism, by speed-changing driving device and with a pair of worm gear be main body form automatically, the hand feed conversion equipment constitutes, the rotary cutting head connects with decelerator (5) output shaft of speed-changing driving device, the bearing block of cylindrical worm (9) parallels on the casing that is packed in speed-changing driving device with the slide rail of speed-changing driving device on support (8) with its shaft core line, the supporting base (17) of the mandrel (18) of the worm gear (10) that is meshed with cylindrical worm (9), (19) be packed on the support (8), worm gear (10) is packed on the mandrel (18), the stator pawl of clutch is packed on the end face of supporting base (17) of mandrel (18), and the moving plate pawl that is packed in the clutch on handle (11) the core hole end surface is fitted in by being slidingly matched on the axle rank that install straight key on worm gear (10) mandrel (18) with keyway.

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