Centrifugal machine testing tool for wedge block type end face pressing product

Abstract

The utility model provides a centrifugal machine testing tool for a wedge block type end face pressing product, and belongs to the technical field of centrifugal testing. The device comprises a base body which is arranged on a centrifugal testing machine platform; a base hole is formed in the vertical plate of the base body; a blind hole is formed in the axis of the clamp body, and a hole is formed in the left end and used for containing a product. The outer circle of the clamp is in a special shape, the left end of the clamp is provided with an outer shaft and an outer thread, the outer shaft penetrates through the base hole in the base body, the inner thread of the straining ring is matched with the outer thread at the left end of the clamp body, and the clamp body is fixed to the base body through threaded connection of the straining ring. A limiting boss is arranged on the clamp body and adjacent to the outer shaft, a square groove with an angle is formed in the boss in the radial direction, the two faces of the square groove and the two faces of the wedge block are designed to be the same, one face of the square groove is perpendicular to a plane, and the other face of the square groove is an inclined face. And the test efficiency is improved while the product is prevented from being damaged during the test.

Description

Technical Field

[0001] This utility model relates to a centrifuge testing fixture that uses wedges to quickly press the end face of a product, specifically a wedge-type centrifuge testing fixture for pressing the end face of a product, belonging to the field of centrifuge testing technology. Background Technology

[0002] During centrifuge testing, the product needs to be clamped onto the centrifuge test bench. Traditional centrifuge fixtures have internal threads at the opening of the inner hole. After the product is inserted into the fixture's inner hole, a threaded clamping ring is used to tighten it via a threaded connection. The number of threads required to screw the clamping ring into the fixture's internal threads is relatively large, resulting in lengthy installation and removal times. Furthermore, since a special socket tool is needed to screw in the clamping ring, it cannot be done directly on the centrifuge platform; the fixture body must be removed from the base, leading to excessive auxiliary time, impacting the testing cycle, and resulting in low efficiency. Therefore, this invention proposes a wedge-type end-face clamping centrifuge testing fixture. Summary of the Invention

[0003] The purpose of this invention is to provide a centrifuge test fixture with low manufacturing cost, high positioning accuracy, and quick product clamping and replacement, solving the problem of difficult and time-consuming clamping of general fixtures, and further proposing a centrifuge test fixture with wedge-type end face clamping of products.

[0004] The purpose of this utility model is achieved through the following technical solution.

[0005] This utility model proposes a centrifuge testing fixture for wedge-type end-face clamping products, including a base body, which is L-shaped and installed on a centrifuge testing platform; the base body has a base hole on its vertical plate.

[0006] The fixture body is used to clamp and test products. The fixture body is designed and manufactured according to the product dimensions and testing requirements. A blind hole is designed at the center of the fixture body's axis, and an opening is located at the left end for placing the product. The outer circumference of the fixture is irregularly shaped, with an outer shaft and external thread at the left end. The outer shaft passes through a base hole on the base body. The internal thread of the tightening ring matches the external thread at the left end of the fixture body, and the fixture body is fixed to the base body using the tightening ring threaded connection. Adjacent to the outer shaft on the fixture body is a limiting boss, which is a beveled stepped shaft. An angled square groove is radially formed on the boss. The two sides of the square groove are designed identically to the two sides of the wedge: one side is a perpendicular plane, and the other side is a 3° bevel. The 3° bevel of the wedge engages with the bevel in the square groove on the fixture body to achieve rapid clamping of the product's end face.

[0007] The fixture body has a process boss in the middle section, which is mainly used to install solenoid valves.

[0008] An observation window is also provided in the middle section of the fixture body near the boss for observing the product status.

[0009] The outer circle of the tightening ring has a knurled design, which increases friction when tightening by hand.

[0010] The two sides of the wedge are mating surfaces: one side is a vertical plane that mates with the vertical plane of the square groove in the fixture body, and the other side is a 3° inclined plane that mates with the inclined plane of the square groove in the fixture body.

[0011] The test product has a circuit interface in the middle of the clamping end face. When clamping, a wedge block is needed to avoid it. The wedge block has an irregularly shaped opening in its vertical plane to avoid the product's wiring port when clamping the product.

[0012] The wedge has a cylindrical handle at the end for easy removal after testing.

[0013] The wedge's 3° angle design is based on the relevant technical requirements of centrifugation testing. During centrifugation testing, the product should withstand a maximum load of 50G. The centrifugal force generated during the centrifuge's rotation causes the wedge to continuously apply pressure to the product's end face. Through simulation calculations, it was found that when the angle between the wedge's inclined surface and the vertical plane is 3°, the product will not be deformed due to excessive centrifugal force. Therefore, the wedge's inclined surface angle was determined to be 3°.

[0014] Working principle

[0015] After the product is placed into the hole from the left end of the fixture body and positioned at the bottom of the hole, the end face of the product that needs to be pressed is located at a position slightly higher than the vertical surface of the square groove of the fixture body. The wedge is inserted into the square groove, with the inclined surface of the wedge corresponding to the angled inclined surface of the square groove of the fixture body, and the vertical surface of the wedge corresponding to the vertical surface of the square groove of the fixture body. The relative movement makes the vertical surface of the wedge press against the end face of the product.

[0016] By manually applying pre-tightening force, the wedge blocks apply pressure to the end face of the product to lock it in place. The centrifugal force generated during the rotation of the centrifuge causes the taper of the wedge blocks to generate inward centrifugal force, continuously applying pressure to the product and achieving continuous clamping and positioning of the product. After the test is completed, the wedge blocks are removed by holding the handle, and then the product is removed from the left end hole of the fixture body.

[0017] Beneficial effects

[0018] This invention utilizes a wedge clamping device to allow for product replacement and rapid product clamping without disassembling the fixture body, reducing auxiliary clamping time. It enables rapid clamping of the tested product during centrifuge testing, achieving quick positioning, clamping, and product qualification testing. This fixture has a short manufacturing cycle, simple structure, and fast and efficient component positioning and clamping, ensuring product protection during testing while improving testing efficiency and further extending product delivery time. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the test fixture.

[0020] Figure 2 This is a schematic diagram of the matrix structure;

[0021] Figure 3 This is a schematic diagram of the wedge block structure;

[0022] Figure 4 This is a schematic diagram of the fixture body.

[0023] Figure 5 This is a schematic diagram showing the fit between the wedge and the square groove of the fixture body;

[0024] Figure 6 This is a schematic diagram of the tight loop structure.

[0025] The numbers in the diagram are: 1-base, 2-tightening ring, 3-wedge block, 4-clamp body, 5-base hole, 6-outer shaft, 7-limiting boss, 8-square groove, 9-process boss, 10-observation window, 11-irregular opening, 14-handle. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0027] Example

[0028] Combination Figures 1-6 The present invention proposes a centrifuge testing fixture for wedge-type end-face clamping products, including a base 1, which is L-shaped and installed on a centrifuge testing platform; the vertical plate of the base 1 has a base hole 5.

[0029] The fixture body 4 is used to clamp and test products. The fixture body 4 is designed and manufactured according to the product dimensions and testing requirements. A blind hole is designed in the center of the fixture body 4, and an opening is made at the left end for placing the product. The outer circle of the fixture is irregularly shaped, with an outer shaft 6 and an external thread at the left end. The outer shaft 6 passes through the base hole 5 on the base body 1. The internal thread of the tightening ring 2 matches the external thread at the left end of the fixture body 4. The fixture body 4 is fixed to the base body 1 by the threaded connection of the tightening ring 2. Adjacent to the outer shaft 6 on the fixture body 4 is a limiting boss 7, which is a chamfered stepped shaft. An angled square groove 8 is radially opened on the boss. The two sides of the square groove 8 are designed the same as the two sides of the wedge block 3: one side is a vertical plane, and the other side is a 3° inclined plane. By utilizing the 3° inclined plane of the wedge block 3 and the inclined plane in the square groove 8 on the fixture body 4, the end face of the product is quickly pressed.

[0030] The fixture body has a process boss 9 in the middle section, which is mainly used to install solenoid valves.

[0031] An observation window 10 is also provided in the middle section of the fixture body near the boss 9, for observing the product status.

[0032] The outer circle of the tightening ring 2 has a knurled design, which increases friction when tightening by hand.

[0033] The two sides of the wedge block 3 are mating surfaces: one side is a vertical plane that mates with the vertical plane of the square groove 8 in the fixture body, and the other side is a 3° inclined plane that mates with the inclined plane of the square groove 8 in the fixture body.

[0034] The test product has a circuit interface in the middle of the clamping end face. When clamping, a wedge block is needed to avoid it. An irregularly shaped opening 11 is opened in the vertical plane of the wedge block to avoid the product's wiring port when clamping the product.

[0035] The wedge 3 has a cylindrical handle 14 at the end for easy removal after testing.

[0036] The wedge's 3° angle design is based on the relevant technical requirements of centrifugation testing. During centrifugation testing, the product should withstand a maximum load of 50G. The centrifugal force generated during the centrifuge's rotation causes the wedge to continuously apply pressure to the product's end face. Through simulation calculations, it was found that when the angle between the wedge's inclined surface and the vertical plane is 3°, the product will not be deformed due to excessive centrifugal force. Therefore, the wedge's inclined surface angle was determined to be 3°.

[0037] Working principle

[0038] After the product is placed into the hole from the left end of the fixture body and positioned at the bottom of the hole, the end face of the product that needs to be pressed is located at a position slightly higher than the vertical surface of the square groove of the fixture body. The wedge 3 is inserted into the square groove 8, the inclined surface of the wedge 3 corresponds to the angled inclined surface of the square groove 8 of the fixture body, and the vertical surface of the wedge 3 corresponds to the vertical surface of the square groove 8 of the fixture body. The relative movement makes the vertical surface of the wedge press against the end face of the product.

[0039] By manually applying pre-tightening force, the wedge 3 applies pressure to the end face of the product to lock it in place. The centrifugal force generated during the rotation of the centrifuge causes the taper of the wedge to generate an inward centrifugal force that continuously applies pressure to the product, thereby achieving continuous clamping and positioning of the product. After the test is completed, the wedge 3 is removed by holding the handle 14, and then the product is removed from the left end hole of the fixture body 4.

Claims

1. A centrifuge testing fixture for wedge-type end-face clamping products, characterized in that, Includes a substrate, which is L-shaped and mounted on a centrifuge testing platform. The substrate has a base hole on its vertical plate. The fixture body is used to clamp and test products. The design of the fixture body is based on the product size and testing requirements. A blind hole is designed in the center of the fixture body shaft, and an opening is made at the left end for placing the product. The outer circle of the fixture is irregularly shaped, with an outer shaft and an external thread at the left end. The outer shaft passes through the base hole on the base body. The internal thread of the tightening ring matches the external thread at the left end of the fixture body. The fixture body is fixed to the base body by the tightening ring thread connection. Adjacent to the outer shaft on the fixture body is a limiting boss. The limiting boss is a beveled stepped shaft. An angled square groove is opened radially on the boss. The two sides of the square groove are designed the same as the two sides of the wedge. One side is a vertical plane, and the other side is a 3° inclined plane. The 3° inclined plane of the wedge cooperates with the inclined plane in the square groove on the fixture body to achieve rapid clamping of the product end face. The two sides of the wedge are mating surfaces: one side is a vertical plane that mates with the vertical plane of the square groove in the fixture body, and the other side is a 3° inclined plane that mates with the inclined plane of the square groove in the fixture body. The wedge's 3° angle design is based on the relevant technical requirements of centrifugation testing. During centrifugation testing, the product should withstand a maximum load of 50G. The centrifugal force generated during the centrifuge's rotation causes the wedge to continuously apply pressure to the product's end face. Through simulation calculations, it was found that when the angle between the wedge's inclined surface and the vertical plane is 3°, the product will not be deformed due to excessive centrifugal force. Therefore, the wedge's inclined surface angle was determined to be 3°.

2. The centrifuge testing fixture for wedge-type end-face clamping products as described in claim 1, characterized in that, The fixture body has a process boss in the middle section, which is mainly used to install solenoid valves.

3. The centrifuge testing fixture for a wedge-type end-face clamping product as described in claim 1, characterized in that, The fixture body also has an observation window near the boss in the middle section for observing the product status.

4. The centrifuge testing fixture for wedge-type end-face clamping products as described in claim 1, characterized in that, The outer circle of the tightening ring has a knurled design, which increases friction when tightened by hand.

5. The centrifuge testing fixture for a wedge-type end-face clamping product as described in claim 1, characterized in that, The test product has a circuit interface in the middle of the clamping end face. When clamping, a wedge block is needed to avoid it. The wedge block has an irregularly shaped opening in its vertical plane to avoid the product's wiring port when clamping the product.

6. A centrifuge testing fixture for a wedge-type end-face clamping product as described in any one of claims 1 to 5, characterized in that, The wedge has a cylindrical handle at the end for easy removal after testing.

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