A spindle-shaped rotary body part machining clamp

Abstract

The utility model discloses a kind of spindle-shaped rotary body part machining's clamps, comprising: first clamping body, be connected with lathe spindle;Top cover, slidingly set in first clamping body, one end is connected with the hydraulic cylinder of lathe by pull rod;Support, slidingly set on lathe spindle, move by lathe driving support;Positioning sleeve, rotationally set in support. Top cover is provided with sliding slot, first clamping body is provided with lock pin block, lock pin block is set in sliding slot, with sliding slot sliding cooperation. Support and positioning sleeve between being provided with roller bearing and thrust ball bearing. One side of roller bearing is provided with cover plate, cover plate is with support screw thread cooperation. Support is provided with lubricating passage. Support and positioning sleeve between being provided with sealing felt. Positioning sleeve is provided with first taper ring, top cover edge is provided with second taper ring, and spindle-shaped rotary body part is supported between first taper ring and second taper ring. Utilize the taper face self-centering of top cover, positioning sleeve is to spindle-shaped rotary body clamping.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, specifically a fixture for machining spindle-shaped rotating parts. Background Technology

[0002] Spindle-shaped rotating parts are usually welded together from two semi-spindle 2mm thick shell parts. Due to welding deformation, it is impossible to machine the end face before welding. If the end face is machined after welding, it is not easy to clamp the part when machining the end face because both ends of the part are conical and the outer end face is relatively short. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for machining spindle-shaped rotating parts, in order to solve the problem of inconvenient clamping during the machining of the end face of spindle-shaped parts, in order to address the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a fixture for machining a spindle-shaped rotating part, comprising: The first fixture body is connected to the lathe spindle; The top sleeve is slidably disposed within the first clamping body, and one end is connected to the hydraulic cylinder of the lathe via a pull rod; The support is slidably mounted on the lathe spindle and is moved by the lathe. The positioning sleeve is rotatably mounted inside the support.

[0005] As a further improvement to the above technical solution: The top sleeve is provided with a sliding groove, and the first clamping body is provided with a locking pin. The locking pin is disposed in the sliding groove and slides with the sliding groove, so that the top sleeve and the first clamping body rotate synchronously.

[0006] Roller bearings and thrust ball bearings are provided between the support and the positioning sleeve.

[0007] A cover plate is provided on one side of the roller bearing, and the cover plate is threadedly engaged with the support.

[0008] The support is provided with a lubrication channel.

[0009] A sealing felt is provided between the support and the positioning sleeve.

[0010] A first conical ring is provided inside the positioning sleeve, and a second conical ring is provided on the edge of the top sleeve. The spindle-shaped rotating part is supported between the first and second conical rings. The conical rings here can also be arc-shaped rings. To improve adaptability, the conical rings are usually made of soft materials.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This utility model utilizes the self-centering principle of the conical surfaces of the top sleeve and positioning sleeve to clamp and position the spindle-shaped rotating body on a lathe. The entire tool has a simple structure, is easy and convenient to operate, and improves work efficiency and quality. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the first clamping device of this utility model; Figure 3 This is a schematic diagram of the top sleeve structure of this utility model.

[0013] Reference numerals in the attached drawings: 1. First clamping body; 2. Top sleeve; 3. Tie rod; 4. Support; 5. Positioning sleeve; 6. Locking pin block; 7. Roller bearing; 8. Thrust ball bearing; 9. Cover plate; 10. Lubrication channel; 11. Sealing felt; 21. Connecting nut; 41. Mounting bolt. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] like Figures 1 to 3 As shown, the fixture for machining the spindle-shaped rotating part in this embodiment includes: The first fixture body 1 is connected to the lathe spindle; The top sleeve 2 is slidably disposed within the first clamping body 1, and one end is connected to the hydraulic cylinder of the lathe via a pull rod 3; one end of the pull rod 3 is threaded and is connected to the top sleeve 2 via a connecting nut 21. Support 4 is slidably mounted on the lathe spindle, and the lathe drives support 4 to move; the power source of support 4 comes from the lathe.

[0019] Positioning sleeve 5 is rotatably mounted inside support 4.

[0020] The top sleeve 2 is provided with a sliding groove, and the first clamping body 1 is provided with a locking pin 6. The locking pin 6 is located in the sliding groove and slides with the sliding groove, so that the top sleeve 2 and the first clamping body 1 rotate synchronously.

[0021] A roller bearing 7 and a thrust ball bearing 8 are installed between the support 4 and the positioning sleeve 5. This arrangement can bear radial and axial loads and ensure machining accuracy.

[0022] A cover plate 9 is provided on one side of the roller bearing 7, and the cover plate 9 is threadedly engaged with the support 4. The cover plate 9 is used to provide axial clamping force to the bearing.

[0023] The support 4 is provided with a lubrication channel 10. The lubrication channel 10 is used to inject lubricant into the bearing.

[0024] A sealing felt 11 is provided between the support 4 and the positioning sleeve 5. The sealing felt 11 is used to prevent iron filings from entering the bearing and to prevent the bearing grease from leaking out.

[0025] The positioning sleeve 5 is provided with a first conical ring, the top sleeve 2 is provided with a second conical ring on its edge, and the spindle-shaped rotating part is supported between the first and second conical rings.

[0026] During assembly, the first fixture body 1 is threaded (the connection method depends on the spindle connection; either a threaded fit or a bolted connection can be used) to the lathe spindle; the tie rod 3 passes through the first fixture body 1 and is connected to the lathe spindle hydraulic cylinder or pneumatic cylinder. The spindle hydraulic cylinder or pneumatic cylinder drives the top sleeve 2 to extend and retract via the tie rod 3, thereby achieving the clamping action on the machined parts. The support 4 is fixed to the moving end on the lathe guide rail by a pressure plate and mounting bolts 10. When the machine tool controls the movement of the moving end, the support 4 moves.

[0027] The operation method for machining a spindle-shaped rotating part in this embodiment is based on a fixture for machining spindle-shaped rotating parts, and includes the following steps: Step 1: Operate the hydraulic cylinder of the lathe spindle to drive the tie rod 3 to retract the top sleeve 2 axially, reserving space for placing the spindle-shaped rotating part; Step 2: The operator places one end of the spindle-shaped rotating part to be processed against the positioning sleeve 5, while holding the part with his hand to keep it stable. Step 3: The operator controls the hydraulic cylinder by stepping on the cylinder switch, which drives the pull rod 3 to extend the top sleeve 2 axially until the top sleeve 2 clamps the part, completing the initial clamping of the part; Step 4: Use a dial indicator to check the runout of the spindle-shaped rotating part. If the runout exceeds the preset range, gently tap the part with a rubber hammer to correct it until the runout meets the processing requirements. The preset range of the runout is set according to the processing accuracy requirements of the part, and the runout is controlled within the range of 0.02-0.05mm.

[0028] Step 5: Use the trial cutting method to set the tool. After determining the machining datum, start the lathe and automatically machine the end face of the part according to the preset program. When setting the tool using the trial cutting method, first perform a small trial cut on the end face of the part, measure the dimensions after the trial cut, and adjust the tool position according to the measurement results to ensure that the machining dimensions meet the design requirements.

[0029] Step 6: After machining is completed, the operator holds the part to keep it stable, operates the hydraulic cylinder or air cylinder of the lathe spindle to slowly retract the top sleeve 2, release the clamping on the part, and then remove the machined part.

[0030] The above description is merely an embodiment of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A fixture for machining a spindle-shaped rotating part, characterized in that, include: The first fixture (1) is connected to the lathe spindle; The top sleeve (2) is slidably set inside the first clamping body (1), and one end is connected to the hydraulic cylinder of the lathe through the pull rod (3); Support (4) is slidably mounted on the lathe spindle and moved by the lathe. The positioning sleeve (5) is rotatably set inside the support (4).

2. The fixture for machining a spindle-shaped rotating part according to claim 1, characterized in that, The top sleeve (2) is provided with a sliding groove, and the first clamping body (1) is provided with a locking pin (6). The locking pin (6) is located in the sliding groove and slides with the sliding groove, so that the top sleeve (2) and the first clamping body (1) rotate synchronously.

3. The fixture for machining spindle-shaped rotating parts according to claim 1, characterized in that, A roller bearing (7) and a thrust ball bearing (8) are provided between the support (4) and the positioning sleeve (5).

4. The fixture for machining spindle-shaped rotating parts according to claim 3, characterized in that, A cover plate (9) is provided on one side of the roller bearing (7), and the cover plate (9) is threadedly engaged with the support (4).

5. The fixture for machining a spindle-shaped rotating part according to claim 3, characterized in that, The support (4) is provided with a lubrication channel (10).

6. The fixture for machining spindle-shaped rotating parts according to claim 3, characterized in that, A sealing felt (11) is provided between the support (4) and the positioning sleeve (5).

7. The fixture for machining spindle-shaped rotating parts according to claim 3, characterized in that, The positioning sleeve (5) is provided with a first conical ring, and the top sleeve (2) is provided with a second conical ring on its edge. The spindle-shaped rotating part is supported between the first and second conical rings.

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