Press-fit pin device

Abstract

The utility model discloses a kind of press-fit dowel devices, including adjusting block and rack, rack is inserted into adjusting block, and with adjusting block gap cooperation;Rack upper end installs fixed block, and the outer diameter part of rack between fixed block and adjusting block is equipped with spring;Rack end installs needle press, needle press bottom end is equipped with needle press hole, for clamping into dowel;Adjusting block is provided with through hole along perpendicular to rack direction, for inserting rotating shaft;Rotating shaft is connected with driving gear, and driving gear is engaged with rack;Rotating shaft end installs operating handle.The device is rotated by operating handle driving rotating shaft, under the action of driving gear and rack, the lower movement of needle press is realized, and then dowel is pressed into the pin hole of bearing product.Using the utility model can be well realized the press-fit of dowel, simple and convenient, time-saving and labor-saving.

Description

Technical Field

[0001] This utility model relates to a press-fit pin device. Background Technology

[0002] During the manufacturing process of non-standard bearings, based on customer requirements, pins need to be installed on the end face of the non-standard bearing. The installed pins must protrude a certain height (H1) above the end face of the non-standard bearing; this height is set according to customer needs. Currently, the method for installing pins on the end face of non-standard bearings is as follows: workers first pre-place the pin in the pin hole on the end face of the non-standard bearing, then place a shim of height H1 on the pin, and finally hammer the pin to install it. This method is inefficient, and the height of the installed pin is prone to errors and deformation. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a press-fit pin device.

[0004] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0005] A press-fit pin device includes an adjusting block and a rack. The rack is inserted into the adjusting block and has a clearance fit with it. A fixing block is installed at the upper end of the rack, and a spring is sleeved on the outer diameter portion of the rack between the fixing block and the adjusting block. A pressure pin is installed at the end of the rack, and the bottom end of the pressure pin has a pressure pin hole for inserting a pin. The adjusting block has a through hole along a direction perpendicular to the rack for inserting a rotating shaft. A drive gear is connected to the rotating shaft, and the drive gear meshes with the rack. An operating handle is installed at the end of the rotating shaft.

[0006] In the above technical solution, the adjusting block is detachably connected to the support rod, the bottom of the support rod is fixed in the support rod base, and the support rod base is connected to the base plate.

[0007] In the above technical solution, the rack is fitted with a pressure needle via a ferrule. The top end of the ferrule is fixedly connected to the rack, and a groove is provided in the middle of the bottom end of the ferrule for installing the pressure needle.

[0008] In the above technical solution, the cross-section of the rotating shaft is a three-layer stepped shape.

[0009] In the above technical solution, after the first-layer stepped upper flat key is connected to the drive gear, an adjusting block extends out and is engaged with the adjusting block by a shim, and the end is fixed by a nut.

[0010] In the above technical solution, the second-layer stepped end is fitted with the adjustment block by a shim.

[0011] In the above technical solution, one end of the third-layer stepped connection is connected to the hand-operated lever, and the other end of the hand-operated lever is connected to the operating handle.

[0012] In the above technical solution, the drive gear is provided with a threaded hole in the radial direction, and a screw is inserted into the adjusting block corresponding to the threaded hole to control the operation of the drive gear.

[0013] In the above technical solution, the diameter of the pressure needle hole is larger than the diameter of the pin in the bearing product.

[0014] In the above technical solution, the depth of the pressure needle hole is equal to the height of the pin installed on the bearing product.

[0015] The beneficial effects of this invention are as follows: This device is designed with matching pressure pins based on the diameter and height of non-standard bearing pins. The pressing action of the pressure pins is achieved through gear and rack transmission. The pins pressed by this device can meet customer needs, replacing the existing manual hammering installation method, and significantly improving installation efficiency and quality. Using this device to press-fit non-standard bearing pins is simple, convenient, time-saving, labor-saving, and has a low manufacturing cost. Attached Figure Description

[0016] Figure 1 This is a front view of the press-fit pin device of this utility model;

[0017] Figure 2 This is a side view of the press-fit pin device of this utility model;

[0018] Figure 3 This is a schematic diagram of the card sleeve structure described in this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating shaft structure described in this utility model;

[0020] Figure 5 This is a schematic diagram of the active gear structure described in this utility model;

[0021] In the diagram: 1-base plate, 2-support rod base, 3-support rod, 4-hand lever, 5-fixing block, 6-adjusting block, 7-rotating shaft, 8-left side pad, 9-right side pad, 10-drive gear, 11-clamp, 12-rack, 13-spring, 14-operating handle, 15-pressing needle. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] like Figure 1 , 2 As shown, the present invention provides a press-fit pin device, comprising a base plate 1, a support rod base 2, a support rod 3, a hand press rod 4, a fixing block 5, an adjusting block 6, a rotating shaft 7, a left side washer 8, a right side washer 9, a drive gear 10, a ferrule 11, a rack 12, a spring 13, an operating handle 14, and a press pin 15.

[0026] The base plate 1 has multiple threaded holes evenly distributed on it for connecting to the bottom of the support rod base 2 with bolts; the support rod base 2 has a through hole in the middle for inserting the support rod 3; the support rod base 2 has screw holes on its side for inserting screws; the screws cooperate with the fixing holes provided at the bottom of the support rod 3 to fix the support rod 3.

[0027] The middle part of the support rod 3 is fitted with one end of the adjusting block 6 with a clearance fit and is secured with bolts; the other end of the adjusting block 6 is fitted with the rack 12 with a clearance fit and is secured with bolts; see Figure 3 The lower end of the rack 12 is connected to a retaining sleeve 11. A groove is formed in the center of the bottom end of the retaining sleeve 11, and a through hole for inserting a screw is formed on one side of the groove along the horizontal direction. The tip of the pressure pin 15 is inserted into the groove and fixed by a screw. The bottom end of the pressure pin 15 has a pressure pin hole for inserting a pin. A fixing block 5 is installed on the upper end of the rack 12, and a spring 13 is fitted around the outer ring of the rack 12 between the fixing block 5 and the adjusting block 6. The side of the rack 12 near the support rod 3 is the tooth surface. The adjusting block 6 can be adjusted vertically on the support rod 3, thereby adjusting the initial position of the pressure pin 15 according to the height of different bearing products to meet the pressing requirements of different products.

[0028] The adjusting block 6 on the side of the rack 12 near the support rod 3 has a through hole along the direction perpendicular to the rack 12 for inserting the rotating shaft 7; Figure 4 As shown, the cross-section of the rotating shaft 7 is a three-tiered stepped structure. The first tier is connected to the drive gear 10 via a key, extending out to the adjusting block 6. It engages with the adjusting block 6 via a left-side washer 8, and is secured at its end with a nut. The drive gear 10 meshes with the rack 12. The second tier engages with the adjusting block 6 via a right-side washer 9. The third tier is located outside the adjusting block 6. One end of the hand lever 4 is connected to the third tier via a screw, and the other end of the hand lever 4 is connected to the operating handle 14 via a screw.

[0029] like Figure 5 As shown, the drive gear 10 has a threaded hole along the radial direction, and a screw is inserted into the adjusting block 6 corresponding to the threaded hole to control the operation of the drive gear 10.

[0030] In this embodiment, based on the pin diameter D1 and the pin height H1 after installation of the non-standard bearing product, the pin hole diameter D2 and pin hole depth H2 for press-fitting are designed. The pin is installed by positioning and pressing down through the pin hole diameter D2. Therefore, D2 is slightly larger than D1, while the pin hole depth H2 is equal to H1.

[0031] In this embodiment, the left gasket 8 and the right gasket 9 are made of copper, while the remaining parts are made of steel.

[0032] The method of using the press-fit pin device of this utility model is as follows: According to the height of the bearing product to be press-fitted and the height H1 after the pin is installed, the initial position of the press pin 15 is adjusted by changing the vertical height of the adjusting block 6; the bearing product to be press-fitted is placed below the press pin 15, and the pin to be press-fitted is pre-inserted into the pin hole. The hand pressure rod 4 is rotated by the operating handle 14, which in turn drives the rotating shaft 7 to rotate. Under the action of the drive gear 10, the rack 12 moves downward, that is, the press pin 15 moves downward, pressing the pin into the pin hole of the bearing product. After the press-fitting is completed, the press pin 15 returns to the initial position under the action of the spring 13, ready to press-fit the next pin.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A press-fit pin device, characterized in that, The device includes an adjusting block (6) and a rack (12). The rack (12) is inserted into the adjusting block (6) and has a clearance fit with the adjusting block (6). A fixing block (5) is installed on the upper end of the rack (12), and a spring (13) is sleeved on the outer diameter of the rack (12) between the fixing block (5) and the adjusting block (6). A pressure pin (15) is installed at the end of the rack (12), and the bottom end of the pressure pin (15) has a pressure pin hole for inserting a pin. The adjusting block (6) has a through hole along the direction perpendicular to the rack (12) for inserting a rotating shaft (7). A drive gear (10) is connected to the rotating shaft (7), and the drive gear (10) meshes with the rack (12). An operating handle (14) is installed at the end of the rotating shaft (7).

2. The press-fit pin device according to claim 1, characterized in that, The adjusting block (6) is detachably connected to the support rod (3), the bottom of the support rod (3) is fixed in the support rod base (2), and the support rod base (2) is connected to the base plate (1).

3. The press-fit pin device according to claim 1, characterized in that, The rack (12) is fitted with a pressure needle (15) via a retainer (11). The top of the retainer (11) is fixedly connected to the rack (12), and a groove is provided in the middle of the bottom end of the retainer (11) for installing the pressure needle (15).

4. The press-fit pin device according to claim 1, characterized in that, The cross-section of the rotating shaft (7) is a three-layer stepped shape.

5. The press-fit pin device according to claim 4, characterized in that, After the first-layer stepped upper flat key connects to the drive gear (10), the adjusting block (6) extends out and is fitted with the adjusting block (6) by a shim, and the end is fixed by a nut.

6. The press-fit pin device according to claim 4, characterized in that, The second-layer stepped end is fitted with the adjusting block (6) by a shim.

7. The press-fit pin device according to claim 4, characterized in that, The third layer is connected to one end of the step-shaped hand lever (4), and the other end of the hand lever (4) is connected to the operating handle (14).

8. The press-fit pin device according to claim 1, characterized in that, The drive gear (10) has a threaded hole in the radial direction, and a screw is inserted into the adjusting block (6) corresponding to the threaded hole to control the operation of the drive gear (10).

9. The press-fit pin device according to claim 1, characterized in that, The diameter of the pressure needle hole is larger than the diameter of the pin in the bearing product.

10. The press-fit pin device according to claim 1, characterized in that, The depth of the pressure pin hole is equal to the height of the pin installed on the bearing product.

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