CN219852170U - Adjustable internal thread machining cutter arbor - Google Patents

Abstract

The utility model discloses an adjustable internal thread machining cutter bar, which is characterized in that a clamping hole is formed in the center of the long axis direction of a cutter bar sleeve, an opening groove is formed between one side of the clamping hole and the outer side of the cutter bar sleeve, an adjustable rod is arranged in the clamping hole, radial adjustable holes are formed at two ends of the adjustable rod, cutter clamping cards are arranged in the adjustable holes, and two semicircular cutter clamping cards are oppositely arranged at the inner sides of the cutter clamping cards, and the cutter clamping grooves are combined to form a square cutter mounting hole matched with a turning tool rod. The utility model solves the long-standing problem that an operator needs two special tools for processing left-handed internal threads and right-handed internal threads, and the length of a nut is different or even more, and simultaneously realizes the adjustment of the length of a cutter bar, the front angle of the cutter and the helix angle, thereby greatly saving the sharpening time of the cutter and the preparation time of the cutter bar and improving the processing efficiency; and a plurality of cutter bars are saved, the cost is greatly reduced, the operation is simple, the use is convenient, and the popularization and application value is high.

Description

Adjustable internal thread machining cutter arbor

Technical Field

The utility model relates to a cutter bar device for machining turning tools, in particular to a cutter bar for machining internal threads, which can adjust the length and the angle.

Background

At present, a lathe is used for machining trapezoidal threads and a multi-head trapezoidal internal thread lathe tool cutter bar which is square and fixedly clamped on a cutter frame. The length of the tool bar varies due to the effect of the actual size of the work piece, and the tool bit portion is approximately: the traditional welding hard alloy cutter, high-speed steel and forged front steel internal thread cutter need to sharpen the cutter head part according to the actual size requirement, and have some problems in the actual processing process. For example: when a Tr30 multiplied by 10 (P5) trapezoidal nut is processed, the screwing length is 50mm, the cutter head with a proper angle needs to be sharpened under the influence of a screw lift angle, the cutter bar is matched with the length of the nut, the cutter can be pricked or vibrated when the rigidity is lost too long, and normal turning cannot be performed when the cutter bar is short. When a Tr30×10 (P5) LH left-handed trapezoidal nut is machined and the length is 100mm, a matched left-handed threading tool is prepared, and a tool bar capable of meeting the length (100 mm) of the nut is also prepared. Therefore, when the nuts are required to be processed in the same size but different screwing directions and different nut lengths, a plurality of different cutters and cutter bars are required to be prepared according to the different processing objects so as to meet the actual processing requirements. The cost of the processing cutter is increased, and the machining production efficiency is also affected.

Disclosure of Invention

According to the internal thread combined type internal thread machining cutter bar capable of adjusting the length and the angle, the rotation of the cutter head angle can be realized according to the requirements of different internal thread machining objects, the cutter bar length can be correspondingly adjusted according to the length of a nut, the cutter head can move in the three-dimensional direction, the adjustment of the center height and the front angle of the cutter head is realized, the cutter is saved, and the production cost is reduced.

The utility model adopts the following technical proposal to realize the aim. The utility model provides an adjustable internal thread machining cutter arbor, includes the cutter arbor cover, the cutter arbor cover is the cuboid, and its major axis direction center is provided with the clamp hole, is provided with the open slot between clamp hole one side and the cutter arbor cover outside limit, and clamp hole inboard relative with the open slot is provided with the shrink groove, installs adjustable pole in the clamp hole, adjustable pole is cylindrical, and its both ends department is provided with radial adjustable hole, and adjustable pole both ends are provided with and are threaded holes with adjustable hole, and threaded hole installs hexagon socket head cap screw, and the clamp is installed to the adjustable hole, clamp the sword card and be two relative semicircle, and the inboard is provided with the cross-section and be right angle "[" type clamp sword groove, and two semicircular clamp sword card inboard relative clamp sword grooves are involuted and are constituteed with internal thread car cutter arbor assorted square dress sword hole.

Further, the diameter of the clamping hole is matched with the diameter of the adjustable rod.

Further, the inner cambered surface of the adjustable hole is matched with the outer cambered surface of the knife clamping card.

The utility model solves the problem that an operator needs two special cutters for processing left-handed internal threads and right-handed internal threads for a long time, realizes the length adjustment of the cutter bar, greatly saves the cutter sharpening time and the cutter bar preparation time, and improves the processing efficiency; and a plurality of cutter bars are saved, the cost is greatly reduced, the operation is simple, the use is convenient, and the popularization and application value is high.

Drawings

FIG. 1 is a front view of the present utility model mounted to a tool holder;

FIG. 2 is a side view of the present utility model mounted to a tool holder;

FIG. 3 is a block diagram of an adjustable lever of the present utility model;

FIG. 4 is a schematic view in the direction A of FIG. 3;

FIG. 5 is a schematic end view of a tool holder sleeve according to the present utility model;

FIG. 6 is a perspective view of the knife holder of the present utility model;

fig. 7 is a perspective view of the structure of the present utility model.

In the figure: 1. the tool comprises a tool rod sleeve, a clamping hole, an open slot, an adjustable rod, an adjustable hole, a threaded hole, an internal hexagonal screw, a tool clamping clamp, a tool clamping slot, a tool rest seat, a shrinkage slot and an internal threaded turning tool.

Description of the embodiments

The utility model is further described below with reference to the drawings and examples. Referring to fig. 1 to 7, an adjustable internal thread machining cutter bar comprises a cutter bar sleeve 1, wherein the cutter bar sleeve 1 is a cuboid, a clamping hole 2 is formed in the center of the long axis direction of the cutter bar sleeve 1, an open slot 3 is formed between one side of the clamping hole 2 and the outer side of the cutter bar sleeve 1, a shrinkage slot 11 (shown in fig. 5) is formed in the inner side of the clamping hole 2 opposite to the open slot 3, an adjustable rod 4 is installed in the clamping hole 2, the adjustable rod 4 is cylindrical, radial adjustable holes 5 are formed in two ends of the adjustable rod 4, three threaded holes 6 transversely penetrating the adjustable hole 5 are formed in two outer ends of the adjustable rod 4, hexagon socket screws 7 (shown in fig. 3 and 4) are installed in the threaded holes 6, a cutter clamping clip 8 is installed in the adjustable hole 5, the cutter clamping clip 8 is in two opposite semicircular shapes, a square cutter clamping groove 9 with a right angle cross section (shown in fig. 6) is formed in the inner side of the two semicircular cutter clamping clips 8, and a square cutter assembling hole matched with the internal thread turning tool 12 rod is formed. The function of the shrinkage groove 11 is to reduce the resistance of the tool holder 10 to the compression of the tool bar sleeve 1 (as shown in fig. 1 and 2), so that the clamping hole 2 can compress the adjustable bar 4.

The utility model is used when in use:

1. if a trapezoidal nut with the length of Tr30 multiplied by 10 (P5) and 50 millimeters (double heads) needs to be processed, the rear angles at the two sides of the head of a normal internal thread turning tool 12 are sharpened to 3 degrees to 5 degrees, the internal thread turning tool 12 is arranged in the tool clamping card 8 of the device, and then is arranged in the adjustable hole 5 of the adjustable rod 4. At this time, the adjustable rod 4 is adjusted to a required length, the cutter clamping clamp 8 is fixed through the inner hexagon screw 7, the cutter clamping clamp 8 clamps the inner thread turning tool 12 to turn the cutter bar, the inner thread turning tool 12 turns to one side of an operator (as shown in fig. 7), and only a certain angle (slightly larger workpiece thread lead angle) is needed to turn left, so that the inner hexagon screw 7 at the end is screwed down to be fixed. Then, the fixing screw on the tool rest seat 10 is loosened, the cutter bar sleeve 1 is opened by the opening groove 3 under the action of automatic elastic force, the adjustable rod 4 is rotated upwards by a certain angle, the tool bit of the internal thread turning tool 12 is slightly tilted upwards to present a certain front angle, and then the screw on the tool rest seat 10 is screwed to fix the cutter bar sleeve 1, so that turning can be performed.

2. When a double-head left-handed trapezoidal nut with the length of Tr30x10 (p 5) LH being 100mm is required to be processed, the combined cutter bar is installed, a right-handed internal thread trapezoidal cutter processed by Tr30x10 (p 5) is clamped by a cutter clamping clamp 8 and is installed in an adjustable hole 5 of an adjustable rod 4, two opposite cutter clamping clamps 8 are screwed and joint-jointed by an internal hexagonal screw 7, the length of the adjustable rod 4 is firstly adjusted according to the length of the double-head left-handed trapezoidal nut, a rod sleeve 10 is fixed by the screw on a cutter frame seat 10, then the cutter head of an internal thread turning tool 12 is rotated rightward by a certain angle (slightly larger than a thread lifting angle), the internal hexagonal screw 7 at the end of the adjustable rod 4 is screwed and fixed, then the screw on the cutter frame seat 10 is loosened, the cutter bar sleeve 1 is automatically opened under automatic elasticity, the adjustable rod 4 is slightly rotated upwards, and the cutter head of the internal thread turning tool 12 is slightly tilted upwards, and a certain front angle is presented. Finally, the screw fixed rod sleeve 1 on the tool rest seat 10 is screwed down, so that turning can be performed.

The utility model has the characteristic of strong anti-flutter capability, realizes the rotation angle of the tool bit part, can adjust the length of the adjustable rod 4 according to the length of the nut, can realize the adjustment of the center height and the front angle of the tool, has the square groove design of the tool clamping clamp 8, can better fix and compress the tool bar of the internal thread turning tool 12, has tight fit, can realize the movement and rotation in different axial directions, has the inner hole of the tool bar sleeve 1 designed as an inner arc groove, has tight fit, good elasticity and firmer compression. The manufacturing cost of the cutter is greatly saved, and the workload of operators is reduced.

Claims (3)

1. The utility model provides an adjustable internal thread machining cutter arbor, includes tool arbor cover (1), its characterized in that, tool arbor cover (1) is cuboid, and its major axis direction center is provided with clamping hole (2), is provided with open slot (3) between clamping hole (2) one side and the cutter arbor cover (1) outside limit, and clamping hole (2) inboard relative with open slot (3) is provided with shrink groove (11), installs adjustable pole (4) in clamping hole (2), adjustable pole (4) are cylindrically, and its both ends department is provided with radial adjustable hole (5), and adjustable pole (4) both outer ends are provided with and link up screw hole (6) with adjustable hole (5), installs hexagon socket head cap screw (7) in screw hole (6), and clamp knife card (8) are installed to adjustable hole (5), clamp knife card (8) are two relative semi-circular, and the inboard is provided with clamp knife card (9) that the cross-section is right angle "[ -shaped" clamp knife card (8) inboard relative clamp knife card (9) and involutes and form and match with interior screw hole (12) square tool arbor.

2. An adjustable internally threaded machining tool holder according to claim 1, characterized in that the diameter of the clamping hole (2) matches the diameter of the adjustable rod (4).

3. The adjustable internal thread machining tool bar according to claim 1, characterized in that the intrados of the adjustable hole (5) matches the extrados of the clamping tool (8).