Gear for punch press

Abstract

The utility model discloses a gear for punch, including gear body, gear body includes gear ring and two clamping blocks, is equipped with the locating post, the center boss and the positioning through -hole on the clamping block, the center boss is equipped with the key groove, is equipped with the mounting through -hole and the center through -hole on the gear ring, positioning through -hole, mounting through -hole correspond with the locating post respectively, and the center through -hole is passed through the center boss, and the stop pin is detachably connected on the locating post, and the stop pin is passed through mounting through -hole, positioning through -hole, and the stop pin blocks the free activity of locating post, to make the two clamping blocks of relative distribution gear ring clamping. The utility model discloses novel structure adopts the split type structure design, and the gear ring is replaceable, avoids the whole gear to discard, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gear technology, and in particular relates to a gear for punch presses. Background Technology

[0002] A punch press is a device for punching and cutting sheet metal. It is driven by a motor to a flywheel, which is connected to a gear shaft, which is connected to a gear, which is connected to a crankshaft. One end of the crankshaft is connected to a connecting rod, which is hinged to a slider to make reciprocating motion, thus punching and cutting the sheet metal.

[0003] Currently, most gears used in punch presses are integrally formed structures. Local tooth wear or keyway cracking can affect transmission, requiring the replacement of the entire gear, resulting in high maintenance costs.

[0004] Existing patent document (publication number: CN208010890U) discloses "a punch press gear", which also has the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a gear for punch presses. It adopts a split structure design, the gear ring is replaceable, and the intact parts can continue to be used, avoiding the disposal of the entire gear and reducing maintenance costs.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A gear for a punch press includes a gear body, characterized in that: the gear body includes a gear ring and two clamping blocks, each clamping block having a positioning post, a central boss, and a positioning through hole; the central boss has a keyway; the gear ring has a mounting through hole and a central through hole, the positioning through hole and the mounting through hole corresponding to the positioning post; the central through hole allows the central boss to pass through; a stop pin is detachably connected to the positioning post, passing through the mounting through hole and the positioning through hole, preventing the positioning post from moving freely, so that the two relatively distributed clamping blocks hold the gear ring. This gear adopts a split structure design, the gear ring is replaceable, and the intact parts can continue to be used, avoiding the need to discard the entire gear and reducing maintenance costs.

[0008] Furthermore, both surfaces of the gear ring are provided with fixing grooves for accommodating the clamping blocks. An annular oil reservoir is formed between the clamping blocks and the fixing grooves. The clamping blocks are provided with oil guiding grooves that communicate with the annular oil reservoir. The central boss is provided with an oil guiding channel that communicates with the keyway and the oil guiding groove. Lubricating oil is injected into the annular oil reservoir. The lubricating oil flows into the oil guiding channel through the oil guiding groove, and then flows out of the oil guiding channel and into the keyway. The lubricating oil forms an oil film on the contact surface between the keyway and the key, reducing the coefficient of friction and thus reducing wear on the keyway and the key. Adding lubricating oil is simple and easy to operate.

[0009] Furthermore, the bottom of the positioning post is provided with a threaded post, and the clamping block is provided with a threaded recess that is screwed into the threaded post. The positioning post is reliably fixed, easy to disassemble and assemble, and can be used immediately after installation, making it flexible and convenient.

[0010] Furthermore, the positioning pin is provided with a transverse threaded hole that mates with the stop pin, ensuring reliable connection, convenient assembly and disassembly, and immediate use.

[0011] Furthermore, the tooth sidewalls of the gear ring are provided with fixing recesses, which are filled with solid grease to form an oil film on the tooth surface, reducing the friction coefficient of metal-to-metal contact, thereby slowing down tooth wear. In addition, the solid grease is not easy to flow away naturally, extending the lubrication time, and the solid grease is also easy to fill.

[0012] Furthermore, the surface of the gear ring is provided with a wear-resistant layer, which improves the wear resistance of the gear ring, making it less prone to wear and rust, and extending its service life.

[0013] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0014] 1. The gear body adopts a split structure design, and the gear ring is replaceable, reducing maintenance costs. During assembly, the positioning pin of one clamping block is passed through the mounting through hole of the gear ring and the positioning through hole of the other clamping block, so that the transverse threaded hole is exposed, realizing the positioning docking of the two clamping blocks with the gear ring. Then, a stop pin is installed on the positioning pin to restrict the free movement of the positioning pin, so that the clamping block cannot be separated from the gear ring. The two relatively distributed clamping blocks clamp the gear ring. The operation is simple and replaces the bolt connection fixing method, saving effort and convenience.

[0015] 2. Lubricating oil is injected into the annular oil reservoir. The lubricating oil flows into the oil guide channel through the oil guide groove, and then flows out of the oil guide channel and into the keyway. The lubricating oil forms an oil film on the contact surface between the keyway and the key, which reduces the coefficient of friction and thus reduces the wear of the keyway and the key. Adding lubricating oil is easy and simple. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the gear body in Example 1;

[0019] Figure 3 This is a schematic diagram of the clamping block in Embodiment 1;

[0020] Figure 4 This is a schematic diagram of the gear ring structure in Example 1;

[0021] Figure 5This is a structural schematic diagram of Embodiment 2 of the present invention;

[0022] Figure 6 This is a schematic diagram of the tooth structure in Example 2.

[0023] In the diagram: 1-Gear body; 2-Gear ring; 3-Clamping block; 4-Positioning pin; 5-Central boss; 6-Positioning through hole; 7-Keyway; 8-Mounting through hole; 9-Central through hole; 10-Stop pin; 11-Transverse threaded hole; 12-Threaded pin; 13-Threaded recess; 14-Fixing groove; 15-Annular oil reservoir; 16-Oil guide groove; 17-Oil guide channel; 18-Fixing recess; 19-Solid grease. Detailed Implementation

[0024] like Figures 1 to 4 The image shown is an embodiment of this utility model.

[0025] A gear for a punch press includes a gear body 1, which includes a gear ring 2 and two clamping blocks 3. The clamping blocks 3 are provided with a positioning pin 4, a central boss 5, and a positioning through hole 6. The clamping blocks 3 and the central boss 5 are integrally formed. The central boss 5 is provided with a keyway 7. The gear ring 2 is provided with a mounting through hole 8 and a central through hole 9. The positioning through hole 6 and the mounting through hole 8 are respectively corresponding to the positioning pin 4. The central through hole 9 allows the central boss 5 to pass through. A stop pin 10 is detachably connected to the positioning pin 4. The distance between the stop pin 10 and the bottom surface of the clamping block 3 near the stop pin 10 is 0.1-0.5mm. The positioning pin 4 is provided with a transverse threaded hole 11 that is screwed into the stop pin 10. The internal thread of the transverse threaded hole 11 is screwed into the external thread of the stop pin 10, which is reliable, easy to disassemble and assemble, and ready to use immediately.

[0026] The gear body 1 adopts a split structure design, and the gear ring 2 is replaceable, reducing maintenance costs. During assembly, the positioning pin 4 of one clamping block 3 is passed through the mounting through hole 8 of the gear ring 2 and the positioning through hole 6 of the other clamping block 3, so that the transverse threaded hole 11 is exposed, realizing the positioning and docking of the two clamping blocks 3 with the gear ring 2. Then, a stop pin 10 is installed on the positioning pin 4 to restrict the free movement of the positioning pin 4, so that the clamping block 3 cannot be separated from the gear ring 2. The two relatively distributed clamping blocks 3 clamp the gear ring 2, which is simple to operate and replaces the bolt connection method, saving effort and convenience. The central bosses 5 of the two clamping blocks 3 abut against each other, and the two keyways 7 are connected, which facilitates key connection with the gear shaft.

[0027] The bottom of the positioning post 4 is provided with a threaded post 12, and the clamping block 3 is provided with a threaded recess 13 that is screwed into the threaded post 12. The external thread of the threaded post 12 is screwed into the internal thread of the threaded recess 13. The positioning post 4 is reliably fixed, easy to disassemble and assemble, and can be used immediately after installation, making it flexible and convenient.

[0028] Compared to connecting the nut to the positioning pin 4, when the nut becomes loose, it will cause displacement, and the distance between it and the clamping block 3 will increase, causing the gear ring 2 to wobble axially and affecting its use. However, even if the stop pin 10 becomes loose and causes displacement, the distance between the stop pin 10 and the clamping block 3 near the stop pin 10 remains unchanged, and the stop pin 10 can continue to effectively block the clamping block 3 near the stop pin 10.

[0029] Both surfaces of the gear ring 2 are provided with fixing grooves 14 for accommodating clamping blocks 3. An annular oil storage cavity 15 is formed between the clamping block 3 and the inner wall of the fixing groove 14. The clamping block 3 is provided with an oil guiding groove 16, which communicates with the annular oil storage cavity 15. The central boss 5 is provided with an oil guiding channel 17, which communicates with the keyway 7 and the oil guiding groove 16.

[0030] After the clamping block 3 is installed, it adheres to the bottom surface of the fixing groove 14 and injects lubricating oil into the annular oil storage cavity 15. The lubricating oil flows into the oil guiding channel 17 through the oil guiding groove 16, and then flows out from the oil guiding channel 17 and enters the keyway 7. The lubricating oil forms an oil film on the contact surface between the keyway 7 and the key, which reduces the coefficient of friction and thus reduces the wear of the keyway 7 and the key. Adding lubricating oil is easy and convenient.

[0031] The surface of the gear ring 2 is provided with a wear-resistant layer, which can be a tungsten carbide coating or an alumina ceramic layer. It has good wear resistance, and the gear ring 2 is not easy to wear and rust, thus extending its service life.

[0032] like Figure 5 and Figure 6 The image shown is a second embodiment of this utility model.

[0033] In the technical solution based on Embodiment 1, a fixing recess 18 is provided on the tooth sidewall of the gear ring 2. The fixing recess 18 is filled with solid grease 19, and the length of the solid grease 19 is greater than the depth of the fixing recess 18. During gear operation, the solid grease 19 forms an oil film on the tooth surface, reducing the friction coefficient of metal-to-metal contact, thereby slowing down tooth wear. Furthermore, the solid grease 19 is not easily lost naturally, extending the lubrication time, and filling the solid grease 19 is also convenient.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A gear for a punch press, comprising a gear body, characterized in that: The gear body includes a gear ring and two clamping blocks. Each clamping block has a positioning post, a central boss, and a positioning through hole. The central boss has a keyway. The gear ring has a mounting through hole and a central through hole. The positioning through hole and the mounting through hole correspond to the positioning post, respectively. The central through hole allows the central boss to pass through. A stop pin is detachably connected to the positioning post. The stop pin passes through the mounting through hole and the positioning through hole, and the stop pin prevents the positioning post from moving freely, so that the two relatively distributed clamping blocks clamp the gear ring.

2. A gear for a punch press according to claim 1, characterized in that: Both surfaces of the gear ring are provided with fixing grooves for accommodating the clamping block. An annular oil storage cavity is formed between the clamping block and the fixing groove. An oil guiding groove is provided on the clamping block, and the oil guiding groove communicates with the annular oil storage cavity. The central boss is provided with an oil guiding channel, and the oil guiding channel communicates with the keyway and the oil guiding groove.

3. A gear for a punch press according to claim 1, characterized in that: The bottom of the positioning post is provided with a threaded post, and the clamping block is provided with a threaded recess that is screwed into the threaded post.

4. A gear for a punch press according to claim 1, characterized in that: The positioning pin is provided with a transverse threaded hole that is screwed into the stop pin.

5. A gear for a punch press according to claim 1, characterized in that: The tooth sidewall of the gear ring is provided with a fixing recess, and the fixing recess is filled with solid lubricant.

6. A gear for a punch press according to claim 1, characterized in that: The surface of the gear ring is provided with a wear-resistant layer.

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