CN117001380A - A positioning tool for disk parts and its use method - Google Patents

Abstract

The application belongs to the technical field of lathe machining, and particularly relates to a positioning tool for disc parts and a use method thereof, wherein the tool comprises a positioning disc, and a center positioning pin and an indexing positioning pin are arranged on the positioning disc; the disc-type part is provided with a central hole and a plurality of circumferentially distributed finish machining holes to be machined; the center hole can be sleeved on the center locating pin, and any one of the finish machining holes can be sleeved on the indexing locating pin. The disc parts can be processed on a common lathe through the positioning tool, so that the processing efficiency is greatly improved, and the cost is reduced.

Description

A positioning tool for disk parts and its use method

Technical field

The invention belongs to the technical field of lathe processing, and specifically relates to a positioning tool for disk parts and a method of using the same.

Background technique

There are multiple holes with dimensional tolerance requirements evenly distributed on the end face of disk parts, and each hole has strict position tolerance requirements relative to the datum of the part.

For single piece and small batch processing, a CNC horizontal machining center can be used to program each hole, and the accuracy is easy to ensure. For the processing of large quantities of workpieces, if a machining center is still used, the consumption, working hours cost and labor cost of the machining center will be too high and the efficiency will be low, which will greatly reduce the economic benefits. If ordinary boring machines are used for processing, due to the large number of holes to be processed, the coordinate calculation of each hole is relatively cumbersome, which requires high calculation and operation skills of the operator, and the processing is also very difficult.

Contents of the invention

In order to improve the processing efficiency of large quantities of porous disk parts, this application provides a positioning tooling for disk parts and a method of using it. Through the positioning tooling, disk parts can be processed on ordinary lathes, greatly improving processing efficiency and reducing costs. cost. The technical solutions adopted by the present invention are as follows:

A positioning tool for disk parts, including a positioning plate, which is provided with a center positioning pin and an indexing positioning pin; the disk part is provided with a center hole and several circumferentially distributed finishing holes to be processed;

The center hole can be sleeved on the center positioning pin, and any one of the finishing holes can be sleeved on the indexing positioning pin;

When any finishing hole is sleeved on the indexing positioning pin, the center of one of the finishing holes adjacent to the finishing hole coincides with the center of the positioning plate.

In the positioning tool for the above-mentioned disk parts, the positioning disk is also provided with studs, and the disk parts are provided with several circumferentially distributed mounting holes. The studs are matched with the mounting holes to allow the disk parts to be detachable. is installed on the positioning plate.

In the above-mentioned positioning tool for disk parts, the center positioning pin is slightly longer than the indexing positioning pin.

The invention also provides a method for using the positioning tool for the above-mentioned disk parts, which includes the following steps:

1) Pre-process disc parts to obtain the center hole and the finishing hole to be processed after roughing;

2) Install the positioning plate onto the lathe chuck and align it;

3) Set the center hole of the disc part on the center positioning pin, so that the center of the first finishing hole to be processed coincides with the center of the positioning plate, and fix the disc part to the positioning plate, and then turn the first finishing holes;

4) Disassemble and loosen the disk parts from the positioning plate, keep the center hole set on the center positioning pin, and rotate the disk parts so that the first finishing hole is set on the indexing positioning pin. At this time, the second The centers of the two finishing holes coincide with the center of the positioning plate, and the disk parts are fixed on the positioning plate. After that, the second finishing hole is turned; repeat this step so that the finishing holes are set on the indexing pins one by one. Until all the finishing holes on the disc part are turned.

5) Remove the plate parts from the positioning plate to complete the processing.

In the above steps 3) and 4), the method of fixing the disk parts to the positioning plate is: first use the center of the tailstock of the machine tool to tighten the finishing hole of the disk parts to be machined, and then use bolts to connect and fix the disk parts to the positioning plate. .

In the above steps 3) and 4), leave a 0.2mm margin when turning each finishing hole, and then use a reamer to ream the hole to the required size.

A counterweight for balancing plate-type parts is installed on the positioning plate.

Beneficial effects of the present invention: the positioning tool has a simple structure and is easy to install with disc parts. The circumferential hole processing on the disc parts can be completed on an ordinary lathe. It is suitable for mass production and has high efficiency. It reduces It eliminates the occupation of CNC machining center, shortens the production cycle, and has higher economic benefits.

Description of the drawings

Figure 1 is a schematic front view of the disc component of the present invention;

Figure 2 is a schematic cross-sectional view of A in Figure 1;

Figure 3 is a schematic front view of the positioning tool of the present invention;

Figure 4 is a schematic side view of the positioning tool of the present invention.

In the picture: 1 is the finishing hole, 2 is the center hole, 3 is the mounting hole, 4 is the positioning plate, 5 is the indexing pin, 6 is the center positioning pin, and 7 is the stud.

Detailed ways

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

This embodiment is a positioning tool for disk parts, which includes a positioning disk 4. The positioning disk 4 is provided with a center positioning pin 6 and an indexing positioning pin 5. The disk part is provided with a center hole 2 and a center hole 2 to be processed. Several circumferentially distributed finishing holes 1; the center hole 2 can be set on the center positioning pin 6, and any one of the finishing holes 1 can be set on the indexing pin 5; when any one of the finishing holes When 1 is set on the indexing positioning pin 5, the center of one of the finishing holes 1 adjacent to the finishing hole 1 coincides with the center of the positioning plate 4.

Furthermore, the positioning plate 4 is also provided with studs 7, and the plate parts are provided with several circumferentially distributed mounting holes 3. The studs 7 are cooperatively connected with the mounting holes 3 to detach the plate parts. is installed on the positioning plate 4.

The center positioning pin 6 is slightly longer than the indexing positioning pin 5. When installing disk parts, the center hole 2 first contacts the center positioning pin 6, and then fine-tunes to make the finishing hole 1 contact and match the indexing positioning pin 5, which is more convenient and Quick and easy to avoid jamming of disk parts during installation.

Referring to Figures 1 and 2, the disc part in this embodiment is φ190mm. The end face has a central hole 2, six annular and evenly distributed finishing holes 1, and six countersunk mounting holes 3. The specifications of the finishing holes 1 It is φ34H7, the specification of the center hole 2 is also φ34H7 and the surface roughness Ra is 1.6μm. The mounting hole diameter of the mounting hole 3 is φ19 mm, and the hole diameter of the countersunk head is φ28mm. The centers of the finishing holes 1 are distributed on the circumference of φ144, the angle between adjacent finishing holes 1 is 60 degrees, and the centers of the mounting holes 3 are distributed on the circumference of φ155.

Referring to Figures 3 and 4, the method of using the positioning tooling to process this disk part on a lathe includes the following steps:

1) Pre-process the disk parts, mark the processing line, and machine the center hole 2 as a reference and the six mounting holes 3 on the drilling machine. Then drill the finishing hole 1 to φ30mm and reserve the finishing holes. 1's 4mm finishing amount.

2) Use an ordinary horizontal lathe CW6163, install the positioning plate 4 on the lathe chuck, and align the right end face of the positioning plate 4 and its outer circle. The runout error is required to be <0.02mm.

3) As shown in Figure 3, set the center hole 2 of the plate part on the center positioning pin 6, so that the center of the first finishing hole 1 to be processed coincides with the center of the positioning plate 4. You can use the tailstock of the machine tool to The tapered tip presses against the finishing hole 1 to be processed, and the high coaxial accuracy of the machine tool tailstock and the machine tool chuck further ensures the position accuracy of the finishing hole 1 to be processed. At this time, the diameter of the finishing hole 1 is small, and the finishing hole 1 cannot be set on the indexing positioning pin 5 . The positioning plate 4 is provided with studs 7, and a mounting hole 3 of the plate component is passed through the stud 7 to be screwed to the positioning plate 4. A counterweight for balancing plate-type parts is installed on the positioning plate 4, and then the first finishing hole 1 is turned.

Considering the accuracy requirements, when the turning accuracy is limited, a 0.2mm margin should be reserved for each finishing hole 1, and then reamed to the required size with a reamer, the same as step 4) below.

It should be noted that in this embodiment, the mounting holes 3 and the studs 7 cooperate to fix the disk parts. In other embodiments, it is not necessary to process the mounting holes 3 on the disk parts, and the disk parts can be pressed directly with bolts. Tightly on the positioning plate 4.

4) Loosen the disc parts from the positioning plate 4, keep the center hole 2 set on the center positioning pin 6 and rotate the disc parts so that the first finishing hole 1 is set on the indexing pin 5 , at this time, the center of the second finishing hole 1 coincides with the center of the positioning plate 4, and the disk parts are fixed on the positioning plate 4, and then the second finishing hole 1 is turned; repeat this step until the turning of the plate is completed All finished holes on type parts1.

5) Remove the plate parts from the positioning plate 4 and complete the processing, which is very convenient, fast and highly efficient.

Claims (7)

1. A location frock of dish class part, its characterized in that: the positioning device comprises a positioning disc (4), wherein a central positioning pin (6) and an indexing positioning pin (5) are arranged on the positioning disc (4); the disc part is provided with a central hole (2) and a plurality of circumferentially distributed finish machining holes (1) to be machined;

the center hole (2) can be sleeved on the center positioning pin (6), and any one of the finish machining holes (1) can be sleeved on the indexing positioning pin (5);

when any one of the finish machining holes (1) is sleeved on the indexing positioning pin (5), the center of one of the finish machining holes (1) adjacent to the finish machining hole (1) coincides with the center of the positioning disc (4).

2. The positioning tool for disc parts according to claim 1, wherein: the positioning disc (4) is further provided with studs (7), the disc parts are provided with a plurality of circumferentially distributed mounting holes (3), and the studs (7) are connected with the mounting holes (3) in a matched mode to detachably mount the disc parts on the positioning disc (4).

3. The positioning tool for disc parts according to claim 1, wherein: the center locating pin (6) is slightly longer than the grading locating pin (5).

4. A method of using the positioning fixture for disc parts according to any one of claims 1 to 3, comprising the steps of:

1) Pre-machining a disc part to obtain a central hole (2) and a rough-treated finish machining hole (1) to be machined;

2) Mounting a positioning disc (4) on a lathe chuck and aligning;

3) Sleeving a central hole (2) of a disc part on a central positioning pin (6), enabling the center of a first finish machining hole (1) to be machined to coincide with the center of a positioning disc (4), fixing the disc part on the positioning disc (4), and turning the first finish machining hole (1);

4) Disassembling and loosening the disc parts from the positioning disc (4), keeping the central hole (2) sleeved on the central positioning pin (6) all the time, rotating the disc parts, enabling the first finish machining hole (1) to be sleeved on the indexing positioning pin (5), enabling the center of the second finish machining hole (1) to coincide with the center of the positioning disc (4), fixing the disc parts on the positioning disc (4), and turning the second finish machining hole (1); the step is repeated so that the finish machining holes (1) are sleeved on the indexing positioning pins (5) one by one until all the finish machining holes (1) on the disc parts are turned.

5) And (5) detaching the disc parts from the positioning disc (4) to finish machining.

5. The method for using the positioning tool for disc parts according to claim 4, wherein in the steps 3) and 4), the disc parts are fixed on the positioning disc (4) in the following manner: firstly, a to-be-processed finish machining hole (1) of a disc part is tightly propped up by the center of a machine tool tailstock, and then the disc part is fixedly connected with a positioning disc (4) by a bolt.

6. The method according to claim 4, wherein in the steps 3) and 4), a margin of 0.2mm is reserved for each finish hole (1) to be turned, and then reaming is performed to a desired size.

7. The method for using the positioning tool for the disc parts according to claim 4, wherein the positioning disc (4) is provided with a counterweight for balancing the disc parts.