Induced tooth machining, clamping and positioning tool

Abstract

The utility model provides an induced tooth machining, clamping and positioning tool which is characterized in that when induced tooth machining is carried out, a four-jaw chuck of a lathe is used for firmly clamping and aligning a flange plate, the bottom surface of an induced tooth product subjected to a cutting process is flatly placed on a base plate, and two circular arc parts of the induced tooth product abut against two positioning pins; a compression nut at the upper end of the pressing plate is screwed down, and the induced tooth product is limited to move in the radial direction of the tool; the adjusting tip is adjusted to be capable of abutting against the tail end of the induced tooth product, and the induced tooth product is limited to move in the axial direction of the tool; during machining, a hard alloy down-the-hole drill is selected, a threaded bottom hole and a chamfer are machined on an induced tooth product, an internal thread turning tool is used for machining internal threads, and cooling liquid is used for cooling and lubricating the tool and the induced tooth product in the whole machining process. The three-time clamping mode of a drill jig is replaced by one-time clamping, and three working procedures of thread bottom hole machining, chamfering and thread machining are completed through one-time clamping turning.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical manufacturing technology, and specifically relates to a clamping and positioning tool for inducing tooth processing. Background Technology

[0002] Guide teeth are crucial components of tracks in special vehicle mobility systems. During vehicle movement, the guide teeth engage with the guide grooves of the road wheels, guiding the road wheels to remain centered on the track and preventing track slippage and misalignment. Guide teeth products are characterized by large production volumes, short delivery times, and irregular shapes. For example... Figure 1 As shown, the blank for the guide tooth is a die forging, with an uneven appearance and poor consistency. One blank can be used to process two guide tooth products. The machining process consists of six steps: 1. Milling two planes, 2. Drilling and boring, 3. Cutting off, 4. Drilling threaded pilot holes, 5. Chamfering, and 6. Tapping. Among them, steps 4, 5, and 6 are processed using a Z5140 vertical drilling machine with a special drilling jig. These three steps require loading and unloading the workpiece three times, resulting in low clamping efficiency, low processing efficiency, high operator labor intensity, high tap procurement costs, and unstable product processing quality, which cannot meet current production needs. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] This utility model proposes an induction gear machining clamping and positioning fixture to solve the technical problems of low clamping efficiency, low machining efficiency, high operator labor intensity, high tap procurement cost, and unstable product processing quality.

[0005] (II) Technical Solution

[0006] To solve the above-mentioned technical problems, this utility model proposes a guide tooth machining clamping and positioning fixture, which includes a flange, a screw, a counterweight, a counterweight locking nut, a clamping nut, a pressure plate, a pressure spring, a spacer, a double-ended stud, a stud locking nut, a base, an adjusting center, a positioning plate, a pad, and a positioning pin; wherein...

[0007] A pad is fixedly connected to a positioning plate. Two positioning pins are pressed from the pad into two positioning holes on the positioning plate to position the guide tooth product. The positioning plate is fixedly connected to the front end face of the flange. The auxiliary seat is fixedly connected to the center of the end face of the flange. The adjusting center is installed in the center threaded hole of the auxiliary seat through the tail thread to tighten the tail end of the guide tooth product. Multiple screws pass through the counterweight and are inserted into the threaded holes on the end face of the flange. Multiple counterweight locking nuts are screwed into the front threads of the corresponding screws to fix the counterweights to the flange. After the stud locking nut is installed at the lower thread of the double-ended stud, it is tightened and fixed on the horizontal plate of the positioning plate. The spacer, pressure spring and pressure plate are sequentially fitted onto the double-ended stud. The pressure nut is installed at the upper thread of the double-ended stud, and the guide tooth product is pressed by the pressure plate.

[0008] Furthermore, the mounting bolts are internal hexagonal socket mounting bolts.

[0009] Furthermore, the positioning plate mounting bolts are internal hexagon positioning plate mounting bolts.

[0010] Furthermore, the positioning plate has an L-shaped structure consisting of a horizontal plate and a side plate. The pad is fixedly connected to the horizontal plate by positioning plate fixing screws. Two positioning pins are pressed from the pad into two positioning holes on the horizontal plate for positioning the guide tooth product. The side plate of the positioning plate is fixedly connected to the front end face of the flange by positioning plate mounting bolts and straight pins.

[0011] Furthermore, the pad is fixedly connected to the cross plate by positioning plate fixing screws.

[0012] Furthermore, the side plate is fixedly connected to the front end face of the flange via positioning plate mounting bolts and pins.

[0013] Furthermore, the attachment is fixedly connected to the center of the end face of the flange by attachment mounting bolts.

[0014] Furthermore, the counterweight has an arc-shaped structure.

[0015] Furthermore, the pad, straight pin, locating pin, and adjusting center are quenched to a hardness of HRC40-45; other parts are tempered to a hardness of HRC28-32.

[0016] (III) Beneficial Effects

[0017] This utility model proposes a clamping and positioning fixture for machining guide teeth. The fixture includes a flange, a screw, a counterweight, a counterweight locking nut, a clamping nut, a pressure plate, a pressure spring, a spacer, a double-ended stud, a stud locking nut, a base, an adjusting center, a positioning plate, a pad, and positioning pins. During guide tooth machining, the flange is securely clamped and aligned using a lathe's four-jaw chuck. The bottom surface of the guide tooth product, after the cutting process, is placed flat on the pad, and the two arcs of the guide tooth product are pressed against the two positioning pins. The clamping nut at the top of the pressure plate is tightened to restrict the radial movement of the guide tooth product along the fixture. The adjusting center is adjusted to hold the tail end of the guide tooth product, restricting its axial movement along the fixture. During machining, a carbide down-the-hole drill is used to machine the threaded bottom hole and chamfer on the guide tooth product. An internal thread cutting tool is used to machine the internal thread. Coolant is used throughout the machining process to cool and lubricate the cutting tool and the guide tooth product. The inductive gear machining clamping and positioning fixture of this utility model is easy to operate and has a reasonable and compact design. By replacing the three clamping methods of drilling jig with one clamping, it realizes the three processes of thread bottom hole, chamfering and thread machining in one clamping and turning. It replaces drilling machine machining, which can improve product processing efficiency and repeatability accuracy, significantly reduce manufacturing costs and reduce the labor intensity of operators. Attached Figure Description

[0018] Figure 1 A three-dimensional view of the die-forged blank for the guide tooth workpiece;

[0019] Figure 2 This is a three-dimensional view of the induction gear machining clamping and positioning fixture structure of this utility model;

[0020] Figure 3 This is an exploded view of the fixture structure for guiding tooth machining and positioning according to this utility model. Detailed Implementation

[0021] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0022] This embodiment proposes an induced gear machining clamping and positioning fixture, the structure of which is as follows: Figure 2 and 3 As shown, it mainly includes flange 1, screw 2, counterweight 3, counterweight locking nut 4, clamping nut 5, pressure plate 6, pressure spring 7, spacer 8, double-ended stud 9, stud locking nut 10, bracket 12, internal hexagon bracket mounting bolt 13, adjusting center 14, positioning plate 15, internal hexagon positioning plate mounting bolt 16, straight pin 17, pad 18, positioning plate fixing screw 19, and positioning pin 20.

[0023] The positioning plate 15 has an L-shaped structure consisting of a horizontal plate and a side plate. The pad 18 is fixedly connected to the horizontal plate by multiple positioning plate fixing screws 19. Two positioning pins 20 are pressed from the pad 18 into two positioning holes on the horizontal plate to position the guide tooth product 11. The side plate of the positioning plate 15 is fixedly connected to the front end face of the flange 1 by two sets of internal hexagonal positioning plate mounting bolts 16 and straight pins 17. The attachment 12 is fixedly connected to the center position of the end face of the flange 1 by multiple internal hexagonal attachment mounting bolts 13. The adjusting tip 14 is installed at the center threaded hole of the attachment 12 through the tail thread to tighten the tail end of the guide tooth product 11. Multiple screws 2 pass through the counterweight 3 and are inserted into the threaded hole on the end face of the flange 1. Multiple counterweight locking nuts 4 are screwed into the front thread of the screws 2 to fix the counterweight 3 to the flange 1. After the stud lock nut 10 is installed at the lower thread of the double-ended stud 9, it is tightened and fixed on the horizontal plate of the positioning plate 15. The spacer 8, pressure spring 7 and pressure plate 6 are sequentially fitted onto the double-ended stud 9. The clamping nut 5 is installed at the upper thread of the double-ended stud 9, and the guide tooth product 11 is clamped by the pressure plate 6.

[0024] In this embodiment, the counterweight 3 has an arc-shaped structure. The pad 18, straight pin 17, positioning pin 20 and adjusting center 14 need to be quenched with a hardness of HRC40-45. Other parts need to be tempered with a hardness of HRC28-32 to ensure the rigidity and stability of the tooling.

[0025] When using the aforementioned guide tooth machining clamping and positioning fixture for guide tooth machining, the flange 1 of the fixture is securely clamped and aligned using the four-jaw chuck of the CNC lathe, ensuring that the perpendicularity and circular runout are adjusted to within 0.01. The positioning surface of the fixture is cleaned, and the bottom surface of the guide tooth product 11, which has undergone the cutting process, is placed flat on the pad 18. The two arcs of the guide tooth product 11 are tightly pressed against the two positioning pins 20, without any gaps. The clamping nut 5 at the upper end of the pressure plate 6 is tightened using a hexagonal socket wrench to ensure that the guide tooth product 11 is fixed on the fixture, restricting the radial movement of the guide tooth product 11 along the fixture. The adjusting center 14 is adjusted to be able to hold the tail end of the guide tooth product 11, restricting the axial movement of the guide tooth product 11 along the fixture, thereby ensuring that the guide tooth product 11 will not shift or swing when a large thrust is generated during drilling. After clamping, machining can be started. During machining, a carbide down-the-hole drill is used to machine the threaded bottom hole and chamfer on the guide tooth product 11. An internal thread cutting tool is used to machine the internal thread. Throughout the machining process, coolant is fully utilized to cool and lubricate the cutting tool and guide tooth product 11. By programming a CNC machining program, the effects of high-speed drilling and chamfering, stable thread machining, and concentrated processes are achieved.

[0026] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tooth machining clamping positioning tool for inducing, characterized by, The guide tooth machining clamping positioning tool comprises a flange, a screw rod, a counterweight, a counterweight locking nut, a pressing nut, a pressing plate, a pressure spring, a spacer sleeve, a stud bolt, a stud bolt locking nut, an auxiliary seat, an adjusting center, a positioning plate, a backing plate and a positioning pin, wherein The backing plate is fixedly connected to the positioning plate, two positioning pins are pressed into two positioning holes in the positioning plate from the backing plate, and the two positioning pins are used for positioning the guide tooth product; the positioning plate is fixedly connected to the front end face of the flange; the auxiliary seat is fixedly connected to the center position of the end face of the flange, the adjusting center is installed at the center threaded hole of the auxiliary seat through a tail thread, and the adjusting center is used for tightly pressing the tail end of the guide tooth product; a plurality of screw rods are inserted into the end face threaded holes of the flange after passing through the counterweights, a plurality of counterweight locking nuts are screwed into the front end threads of the corresponding screw rods, the counterweights are fixedly connected to the flange, the stud bolt locking nut is installed at the lower end thread of the stud bolt, and the stud bolt locking nut is tightly fixed on the horizontal plate of the positioning plate; the spacer sleeve, the pressure spring and the pressing plate are sequentially sleeved on the stud bolt, the pressing nut is installed at the upper end thread of the stud bolt, and the guide tooth product is pressed by the pressing plate.

2. The induction tooth machining clamping and positioning fixture according to claim 1, characterized in that, The positioning plate has an L-shaped structure composed of a horizontal plate and a side plate, the backing plate is fixedly connected to the horizontal plate through a positioning plate fixing screw, two positioning pins are pressed into two positioning holes in the horizontal plate from the backing plate, and the two positioning pins are used for positioning the guide tooth product; the side plate of the positioning plate is fixedly connected to the front end face of the flange through a positioning plate mounting bolt and a straight pin.

3. The induction tooth machining clamping and positioning fixture according to claim 2, characterized in that, The positioning plate mounting bolt is an inner hexagonal positioning plate mounting bolt.

4. The induction tooth machining clamping and positioning fixture according to claim 1, characterized in that, The backing plate is fixedly connected to the horizontal plate through a positioning plate fixing screw.

5. The induction tooth machining clamping and positioning fixture according to claim 2, characterized in that, The side plate is fixedly connected to the front end face of the flange through a positioning plate mounting bolt and a straight pin.

6. The induction tooth machining clamping and positioning fixture according to claim 1, characterized in that, The auxiliary seat is fixedly connected to the center position of the end face of the flange through an auxiliary seat mounting bolt.

7. The induction tooth machining clamping and positioning fixture of claim 1, wherein, The counterweight has an arc-shaped structure.

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