A fixture for processing special-shaped grooves of disc parts and a method of using the fixture

Abstract

The present invention discloses a fixture for processing special-shaped grooves of disc-like parts and a method for using the fixture, wherein the fixture comprises a base for radially fixing the disc-like parts, a plurality of frame plates for providing clamping planes for two adjacent disc-like parts, and a group of clamping components for axially clamping the disc-like parts. The fixture realizes radial positioning of the disc-like parts through annular grooves and positioning pins, and realizes axial positioning of the disc-like parts through the clamping components. At the same time, a frame plate is installed between two adjacent disc-like parts, and the frame plate provides a clamping plane for the two adjacent disc-like parts to ensure stable clamping of the disc-like parts. The fixture can be used to simultaneously fix multiple disc-like parts and simultaneously complete the special-shaped groove processing of multiple disc-like parts.

Description

Technical Field

[0001] The invention relates to the technical field of parts processing, and in particular to a fixture for processing special-shaped grooves of disc parts and a use method thereof. Background Art

[0002] For disc-like parts special-shaped groove processing, a special-shaped groove needs to be processed in the disc-like parts. Since the special-shaped groove is located inside the disc-like parts, and there are three unevenly distributed bosses on the upper end of the disc-like parts, it is impossible to perform wire cutting processing on multiple parts at the same time. During wire cutting processing, each disc-like part needs to be aligned, which greatly restricts the processing efficiency. Therefore, it is necessary to design a special fixture to ensure that multiple disc-like parts can be clamped on the wire cutting workbench at the same time, and to achieve the purpose of accurate positioning of disc-like parts and rapid multiple clamping, improve processing efficiency, and meet design requirements. Summary of the invention

[0003] The purpose of the present invention is to provide a fixture for processing special-shaped grooves of disc-type parts in order to address the technical defects in the prior art that multiple parts cannot be processed by wire cutting at the same time and the processing efficiency is low. The fixture can clamp multiple disc-type parts on the wire cutting workbench at the same time, thereby realizing precise positioning and rapid clamping of multiple disc-type parts.

[0004] Another object of the present invention is to provide a method for using the fixture for processing special-shaped grooves of disc-like parts.

[0005] The technical solution adopted to achieve the purpose of the present invention is:

[0006] A fixture for machining special-shaped grooves of disc-like parts, comprising a base for radially fixing the disc-like parts, a plurality of frame plates for providing clamping planes for two adjacent disc-like parts, and a group of clamping components for axially clamping the disc-like parts;

[0007] The base includes a base, an annular groove and a positioning pin fixed on the base; the relative positions of the annular groove and the positioning pin are consistent with the relative positions of the center hole and the part hole on the disc-like part, so that the annular groove is inserted into the center hole and the positioning pin is inserted into the part hole at the same time, so as to achieve radial fixation of the disc-like part and the base; the base and the annular groove are provided with a U-shaped groove for avoiding cutting by the wire cutting wire;

[0008] The frame plate is an annular sheet sleeved outside the annular groove, and the frame plate is provided with a notch for inserting the positioning pin and a special-shaped avoidance groove for avoiding cutting by the wire cutting wire;

[0009] The clamping assembly includes a clamping block and a screw, the two ends of the clamping block are pressed on the upper surface of the disc-like part located at the top; the lower end of the screw passes through the clamping block and is threadedly connected to the base to achieve axial clamping of the disc-like part and the base;

[0010] The height of the annular groove is equal to the sum of the heights of n disk-like parts and n-1 rack plates, the height of the positioning pin is greater than or equal to the height of the annular groove, and n is an integer greater than or equal to 2.

[0011] In the above technical solution, two countersunk holes are provided on the base to fix the base on the cutting workbench.

[0012] In the above technical solution, the wall thickness of the annular groove is 4 mm, and the outer diameter roundness of the annular groove is less than 0.02 mm.

[0013] In the above technical solution, the position accuracy error between the locating pin and the part hole and the position accuracy error between the locating pin and the notch are both less than 0.02 mm.

[0014] In the above technical solution, the position accuracy error between the special-shaped avoidance groove and the special-shaped groove to be processed on the disc-like part is less than 0.02mm, and the special-shaped avoidance groove is enlarged by 0.5mm in both the X and Y directions compared with the special-shaped groove to be processed on the disc-like part.

[0015] In the above technical solution, a threaded hole is provided on the base, and the lower end of the screw is threadedly connected to the base through the threaded hole.

[0016] In the above technical solution, both sides of the positioning pin are flat.

[0017] In the above technical solution, the notch is U-shaped.

[0018] In the above technical solution, a strip groove is provided in the middle of the pressing block to facilitate the adjustment of the position of the pressing block.

[0019] In the above technical solution, the clamping assembly further includes a gasket, and the gasket is located between the pressing block and the screw cap.

[0020] In another aspect of the present invention, a method for using the above-mentioned fixture for processing special-shaped grooves of disc-like parts comprises the following steps:

[0021] Step 1: Fix the base on the cutting table;

[0022] Step 2: Fit the center hole and part hole of the disc-like part onto the annular groove and the positioning pin respectively to complete the radial positioning of the disc-like part;

[0023] Step 3: Put the frame plate on the annular groove and insert the positioning pin into the notch to complete the assembly of one frame plate;

[0024] Step 4: Repeat steps 2 and 3 to complete the positioning and clamping of n disk parts and n-1 racks;

[0025] Step 5: Adjust the position of the pressing block so that the screw passes through the pressing block and the lower end is threadedly connected with the base, so that n disc parts and n-1 racks are axially pressed on the base, and the wire cutting of the special-shaped grooves of the n disc parts can be started at the same time;

[0026] After the wire cutting processing of n disc parts is completed, the screws and the pressing blocks are opened, the n disc parts and n-1 racks are removed from the base, and then steps 2-5 are repeated to process the next batch of disc parts.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The fixture for processing special-shaped grooves of disc-like parts provided by the present invention realizes radial positioning of disc-like parts through annular grooves and positioning pins, and realizes axial positioning of disc-like parts through clamping components. At the same time, a frame plate is installed between two adjacent disc-like parts, and the frame plate provides a clamping plane for the two adjacent disc-like parts to ensure stable clamping of the disc-like parts. The fixture can be used to fix multiple disc-like parts at the same time, and complete the special-shaped groove processing of multiple disc-like parts at the same time.

[0029] 2. The fixture for processing special-shaped grooves in disc-like parts provided by the present invention has a U-shaped groove for avoiding cutting by wire cutting wire on the base and the annular groove, and a special-shaped avoidance groove for avoiding cutting by wire cutting wire on the frame plate. The special-shaped avoidance groove is enlarged by 0.5 mm in both the X and Y directions compared to the special-shaped groove to be processed in the disc-like part to avoid interference with the fixture during wire cutting processing.

[0030] 3. The present invention provides a method for using a fixture for processing special-shaped grooves in disc-like parts. The base at the bottom of the base is fixedly installed on a cutting workbench. After the cutting of n disc-like parts clamped on the base is completed, there is no need to thread the wire again for alignment when cutting again, which greatly improves the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The figure shows the structure diagram of the fixture for processing special-shaped grooves of disc parts in the use state;

[0032] Figure 2 Shown is a schematic structural diagram of the substrate;

[0033] Figure 3 Shown is a top view of the substrate;

[0034] Figure 4 Shown is a schematic diagram of the structure of disc parts;

[0035] Figure 5 Shown is a schematic diagram of the structure of the rack plate.

[0036] In the figure: 1-base, 1-1-base, 1-2-annular groove, 1-3-locating pin, 1-4-U-shaped groove, 1-5-countersunk hole, 2-disc part, 2-1-center hole, 2-2-part hole, 3-rack plate, 4-pressing block, 5-screw, 6-gasket. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] Example 1

[0039] A fixture for machining special-shaped grooves of disc-like parts, comprising a base 1 for radially fixing a disc-like part 2, a plurality of frame plates 3 for providing clamping planes for two adjacent disc-like parts 2, and a group of clamping components for axially clamping the disc-like parts 2;

[0040] The base 1 includes a base 1-1 and an annular groove 1-2 and a positioning pin 1-3 fixed on the base 1-1; the relative positions of the annular groove 1-2 and the positioning pin 1-3 are consistent with the relative positions of the center hole 2-1 and the part hole 2-2 on the disc part 2, so that the annular groove 1-2 is inserted into the center hole 2-1 and the positioning pin 1-3 is inserted into the part hole 2-2, so that the disc part 2 and the base 1 are radially fixed; the base 1-1 and the annular groove 1-2 are provided with a U-shaped groove 1-4 for avoiding cutting by the wire cutting wire;

[0041] The frame plate 3 is an annular sheet mounted outside the annular groove 1-2, and the frame plate 3 is provided with a notch 3-1 for inserting the positioning pin 1-3 and a special-shaped avoidance groove 3-2 for avoiding cutting by the wire cutting wire;

[0042] The clamping assembly includes a clamping block 4 and a screw 5. The two ends of the clamping block 4 are pressed on the upper surface of the disc-like part 2 located at the top. The lower end of the screw 5 passes through the clamping block 4 and is threadedly connected to the base 1-1 to achieve axial clamping of the disc-like part 2 and the base 1.

[0043] The height of the annular groove 1-2 is equal to the sum of the heights of n disk parts 2 and n-1 rack plates 3, the height of the positioning pin 1-3 is greater than or equal to the height of the annular groove 1-2, and n is an integer greater than or equal to 2.

[0044] Example 2

[0045] This embodiment introduces the method of use based on the embodiment 1.

[0046] The method for using the fixture for processing the special-shaped groove of the disc-type parts includes the following steps:

[0047] Step 1: Fix the base 1 on the cutting table;

[0048] Step 2: The center hole and the part hole of the disc-like part 2 are respectively mounted on the annular groove and the positioning pin to complete the radial positioning of the disc-like part;

[0049] Step 3: Put the shelf plate on the annular groove and insert the positioning pin into the notch to complete the assembly of one shelf plate;

[0050] Step 4: Repeat steps 2 and 3 to complete the positioning and clamping of n disk parts and n-1 racks;

[0051] Step 5: Adjust the position of the pressing block so that the screw passes through the pressing block and the lower end is threadedly connected with the base, so that n disc parts and n-1 racks are axially pressed on the base, and the wire cutting of the special-shaped grooves of the n disc parts can be started at the same time;

[0052] After the wire cutting processing of n disc parts is completed, the screws and the pressing blocks are opened, the n disc parts and n-1 racks are removed from the base, and then steps 2-5 are repeated to process the next batch of disc parts.

[0053] Example 3

[0054] This embodiment introduces the preferred structure based on the embodiment 1.

[0055] Preferably, two countersunk holes 1-5 are provided on the base to fix the base 1 on the cutting workbench.

[0056] Preferably, the wall thickness of the annular groove is 4 mm, and the outer diameter roundness of the annular groove is less than 0.02 mm.

[0057] Preferably, the position accuracy error between the locating pin and the part hole and the position accuracy error between the locating pin and the notch are both less than 0.02 mm.

[0058] Preferably, the position accuracy error between the special-shaped avoidance groove and the special-shaped groove to be processed on the disc-like part is less than 0.02 mm, and the special-shaped avoidance groove is enlarged by 0.5 mm in both the X and Y directions compared with the special-shaped groove to be processed on the disc-like part.

[0059] Preferably, a threaded hole 1-6 is provided on the base, and the lower end of the screw is threadedly connected to the base 1-1 through the threaded hole 1-6.

[0060] Preferably, both sides of the positioning pin are flat.

[0061] Preferably, the notch is U-shaped.

[0062] Preferably, a strip groove 4 - 1 is provided in the middle of the pressing block 4 to facilitate adjustment of the position of the pressing block.

[0063] Preferably, the clamping assembly further includes a gasket 6 , and the gasket 6 is located between the pressing block 4 and the nail cap of the screw 5 .

[0064] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A fixture for processing special-shaped grooves of disc parts, characterized by: It includes a base for radially fixing the disc-like parts, a plurality of frame plates for providing clamping planes for two adjacent disc-like parts, and a group of clamping components for axially clamping the disc-like parts; The base includes a base, an annular groove and a positioning pin fixed on the base; the relative positions of the annular groove and the positioning pin are consistent with the relative positions of the center hole and the part hole on the disc-like part, so that the annular groove is inserted into the center hole and the positioning pin is inserted into the part hole at the same time, so as to achieve radial fixation of the disc-like part and the base; the base and the annular groove are provided with a U-shaped groove for avoiding cutting by the wire cutting wire; The frame plate is an annular sheet sleeved outside the annular groove, and the frame plate is provided with a notch for inserting the positioning pin and a special-shaped avoidance groove for avoiding cutting by the wire cutting wire; The clamping assembly includes a clamping block and a screw, the two ends of the clamping block are pressed on the upper surface of the disc-like part located at the top; the lower end of the screw passes through the clamping block and is threadedly connected to the base to achieve axial clamping of the disc-like part and the base; The height of the annular groove is equal to the sum of the heights of n disk parts and n-1 rack plates, the height of the positioning pin is greater than or equal to the height of the annular groove, and n is an integer greater than or equal to 2; The two sides of the positioning pin are flat; the notch is U-shaped; a strip groove is opened in the middle of the pressure block to facilitate the adjustment of the position of the pressure block; the clamping assembly also includes a gasket, which is located between the pressure block and the nail cap of the screw.

2. The fixture for processing special-shaped grooves of disc parts according to claim 1, characterized in that: The base is provided with two countersunk holes for fixing the base on the cutting workbench.

3. The fixture for processing special-shaped grooves of disc parts according to claim 1, characterized in that: The wall thickness of the annular groove is 4 mm, and the outer diameter roundness of the annular groove is less than 0.02 mm.

4. The fixture for processing special-shaped grooves of disc parts according to claim 1, characterized in that: The position accuracy error between the locating pin and the part hole and the position accuracy error between the locating pin and the notch are both less than 0.02 mm.

5. The fixture for machining special-shaped grooves of disc parts according to claim 1, characterized in that: The position accuracy error between the special-shaped avoidance groove and the special-shaped groove to be processed in the disc-like part is less than 0.02mm. Compared with the special-shaped groove to be processed in the disc-like part, the special-shaped avoidance groove is enlarged by 0.5mm in both the X and Y directions.

6. The fixture for machining special-shaped grooves of disc parts according to claim 1, characterized in that: The base is provided with a threaded hole, and the lower end of the screw is threadedly connected with the base through the threaded hole.

7. The method for using the fixture for processing special-shaped grooves of disc parts according to any one of claims 1 to 6, characterized in that: The following steps are involved: Step 1: Fix the base on the cutting table; Step 2: Fit the center hole and part hole of the disc-like part onto the annular groove and the positioning pin respectively to complete the radial positioning of the disc-like part; Step 3: Put the shelf plate on the annular groove and insert the positioning pin into the notch to complete the assembly of one shelf plate; Step 4: Repeat steps 2 and 3 to complete the positioning and clamping of n disk parts and n-1 racks; Step 5: Adjust the position of the pressing block so that the screw passes through the pressing block and the lower end is threadedly connected with the base, so that n disc parts and n-1 racks are axially pressed on the base, and the wire cutting of the special-shaped grooves of the n disc parts can be started at the same time; After the wire cutting processing of n disc parts is completed, the screws and the pressing blocks are opened, the n disc parts and n-1 racks are removed from the base, and then steps 2-5 are repeated to process the next batch of disc parts.

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