Lathe fixture for turning pin sleeve

Abstract

The utility model relates to a lathe fixture for turning a pin sleeve, which comprises a fixed handle and is technically characterized in that the fixed handle consists of a handle shaft and a fixed disc, a square fixed sleeve is arranged on the top surface of the fixed disc, an X-direction slot parallel to the axis of the handle shaft is arranged at the right part of the top surface of the square fixed sleeve, and a fixed chuck is embedded in the X-direction slot; a Y-direction sliding groove communicated with the X-direction inserting groove is formed in the left portion of the top face of the square fixing sleeve, a sliding chuck is embedded in the Y-direction sliding groove, the sliding chuck and the fixed chuck are provided with semi-cylindrical concave faces corresponding to each other, a Y-direction through hole is formed in the sliding chuck, and a reset spring is fixed in the Y-direction through hole. One end of the reset spring abuts against the left side wall of the square fixing sleeve on the fixed chuck, a Y-direction threaded hole communicated with the Y-direction sliding groove is formed in the left side wall of the square fixing sleeve, the rod portion of the movable handle is in threaded connection with the Y-direction threaded hole, and the tail end of the rod portion of the movable handle abuts against the sliding chuck. The clamp improves product machining precision, avoids uneven wall thickness of parts, guarantees form and location tolerance, and accordingly improves the qualified rate of products.

Description

Technical Field

[0001] The utility model relates to the field of aviation parts manufacturing, in particular to a lathe clamp used for turning pin sleeves, which is suitable for thin-walled rotating bodies. Background Art

[0002] Pin bushings are parts used in conjunction with pin shafts and are widely used in construction machinery, automobiles, trains, ships and other places with movable arms. Their main function is to reduce the wear between the pin shaft and the hole, and to reduce the wear of parts by reasonably dispersing and bearing the load. However, in special fields, pin bushings require thin wall thickness and strict form and position tolerances, which also brings difficulties to product processing, and usually there are problems such as difficult clamping and irregular products. Utility Model Content

[0003] The purpose of the utility model is to provide a lathe fixture for turning pin sleeves with a reasonable structure and reliable use to solve the above-mentioned problems, improve product processing accuracy, avoid uneven wall thickness of parts, ensure form and position tolerances, and thus improve the qualified rate of products.

[0004] The technical solution of the utility model is:

[0005] A lathe clamp for turning a pin sleeve, comprising a fixed handle for connecting to a lathe chuck, the technical key points of which are: the fixed handle is composed of a handle shaft and a fixed disk arranged at one end of the handle shaft, the top surface of the fixed disk is provided with a square fixed sleeve, the right part of the top surface of the square fixed sleeve is provided with an X-direction slot parallel to the axis of the handle shaft, a fixed chuck is embedded in the X-direction slot, the left part of the top surface of the square fixed sleeve is provided with a Y-direction slide groove connected to the X-direction slot, a sliding chuck is embedded in the Y-direction slide groove, and the sliding chuck is provided in the Y-direction slide groove. The opposing surfaces of the head and the fixed chuck are provided with corresponding semi-cylindrical concave surfaces, and the two semi-cylindrical concave surfaces can be buckled into a pin sleeve clamping space, a Y-direction through hole is provided in the sliding chuck and a reset spring is fixed in the Y-direction through hole, one end of the reset spring is against the fixed chuck, a Y-direction threaded hole connected to the Y-direction slide groove is provided on the left side wall of the square fixed sleeve, the rod of the movable handle is threadedly connected to the Y-direction threaded hole, and the end of the rod of the movable handle enters the Y-direction slide groove through the Y-direction threaded hole and presses the sliding chuck.

[0006] The above-mentioned lathe clamp for turning pin sleeves has fixing holes at the four corners of the square fixing sleeve, and the tip of the fixing screw passes through the fixing hole to be connected and fixed to the fixing plate.

[0007] The lathe fixture for turning pin sleeves is provided with a pair of Y-direction limiting edges on the outer peripheral surface of the fixed chuck, and the inner wall of the X-direction slot is provided with a Y-direction limiting groove that cooperates with the Y-direction limiting edges.

[0008] In the above-mentioned lathe clamp for turning pin sleeves, an X-direction limit screw is provided between the side of the fixing chuck facing away from the semi-cylindrical concave surface and the square fixing sleeve.

[0009] The above-mentioned lathe clamp for turning pin sleeves, the cross-section of the sliding chuck is an inverted T-shape, the top surface of the square fixed sleeve is provided with reducing grooves on both sides of the Y-direction slide groove, the reducing groove is embedded with a guide slide plate, the guide slide plate is pressed on the lower side wing of the sliding chuck, the two guide slide plates jointly clamp the sliding chuck, and the guide slide plate is connected and fixed to the square fixed sleeve by a locking screw.

[0010] The beneficial effects of the utility model are:

[0011] When in use, rotate the movable handle, and the end of the rod of the movable handle pushes the sliding chuck to overcome the force of the reset spring and move along the Y-axis slide groove toward the fixed slide. The semi-cylindrical concave surfaces of the sliding chuck and the fixed slide are buckled and clamped together to clamp the pin sleeve to be turned. After clamping in place, the position is locked. By limiting the freedom of the pin sleeve, the processing of parts is convenient and easy, which solves the problems of difficult clamping and irregular products, improves the processing accuracy of products, avoids uneven wall thickness of parts, ensures shape and position tolerances, and thus improves the qualified rate of products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 yes Figure 1 Middle BB section;

[0014] Figure 3 yes Figure 1 Mid-CC section;

[0015] Figure 4 It is a three-dimensional diagram of the utility model;

[0016] Figure 5 yes Figure 1 A schematic diagram of the structure of the middle fixed handle;

[0017] Figure 6 yes Figure 1 A schematic diagram of the structure of the middle square fixing sleeve;

[0018] Figure 7 yes Figure 1 A schematic diagram of the structure of the fixed chuck;

[0019] Figure 8 yes Figure 1 A schematic diagram of the structure of the sliding chuck;

[0020] Fig. 9 yes Figure 1 Schematic diagram of the structure of the center guide slide.

[0021] In the figure: 1. fixed handle, 101. handle shaft, 102. fixed plate, 2. movable handle, 3. square fixed sleeve, 301. X-direction slot, 302. Y-direction slide groove, 303. reduction groove, 304. Y-direction threaded hole, 4. fixing screw, 5. guide plate, 501. countersunk hole, 6. locking screw, 7. fixed chuck, 701. Y-direction limiting edge, 702. semi-cylindrical concave surface, 703. X-direction limiting reducing groove, 8. X-direction limiting screw, 9. sliding chuck, 901. Y-direction through hole, 902. semi-cylindrical concave surface, 10. pin, 11. threaded hole. DETAILED DESCRIPTION

[0022] The utility model is described in detail according to the accompanying drawings of the specification.

[0023] like Figures 1 to 9 As shown, the lathe fixture for turning pin sleeves includes a fixed handle 1 for connecting to a lathe chuck, wherein the fixed handle 1 is composed of a handle shaft 101 and a fixed plate 102 arranged at one end of the handle shaft 101 .

[0024] Among them, a square fixing sleeve 3 is provided on the top surface of the fixing plate 102. An X-direction slot 301 parallel to the axis of the handle shaft 101 is provided on the right part of the top surface of the square fixing sleeve 3, and a fixing chuck 7 is embedded in the X-direction slot 301. A Y-direction slide groove 302 connected to the X-direction slot 301 is provided on the left part of the top surface of the square fixing sleeve 3, and a sliding chuck 9 is embedded in the Y-direction slide groove 302. The opposite surfaces of the sliding chuck 9 and the fixing chuck 7 are provided with semi-cylindrical concave surfaces 902 and 702 corresponding to each other, and the two semi-cylindrical concave surfaces 902 and 702 can be buckled into a pin sleeve clamping space, and the center line of the pin sleeve clamping space coincides with the axis of the handle shaft 101. The sliding chuck 9 is provided with a Y-direction through hole 901 and a return spring (omitted due to obstruction in the figure) is fixed in the Y-direction through hole 901, one end of the return spring is pressed against the fixed chuck 7, and the left side wall of the square fixed sleeve 3 is provided with a Y-direction threaded hole 304 connected to the Y-direction slide groove 302, the rod of the movable handle 2 is threadedly connected with the Y-direction threaded hole 304, and the end of the rod of the movable handle 2 enters into the Y-direction slide groove 304 through the Y-direction threaded hole 304 and presses the sliding chuck 9.

[0025] In this embodiment, the four corners of the square fixing sleeve 3 are provided with fixing holes, and the tip of the fixing screw 4 passes through the fixing hole to be connected and fixed to the fixing plate 102. The fixing hole is a countersunk hole, and the nut of the fixing screw 4 is located in the countersunk hole. A pair of Y-direction limiting ribs 701 are provided on the outer peripheral surface of the fixing chuck 7, and a Y-direction limiting groove matching the Y-direction limiting ribs 701 is provided on the inner wall of the X-direction slot 301. An X-direction limiting screw 8 is provided between the side of the fixing chuck 7 facing away from the semi-cylindrical concave surface 702 and the square fixing sleeve 3, and a half-counter-hole corresponding to the X-direction limiting screw 8 is provided on the top surface of the square fixing sleeve 3, and an X-direction limiting reducing groove 703 matching the upper part of the half-counter-hole is provided on the top surface of the fixing chuck 7. The cross section of the sliding chuck 9 is an inverted T-shape, and the top surface of the square fixing sleeve 3 is provided with reduction grooves 303 on both sides of the Y-direction slide groove 302, and the guide slide 5 is embedded in the reduction groove 303, and the guide slide 5 is pressed on the lower side wing of the sliding chuck 9. The two guide slides 5 clamp the sliding chuck 9 together, and the guide slide 5 is connected and fixed to the square fixing sleeve 3 by a locking screw 6. The top surface of the guide slide 5 is provided with a countersunk hole 501 corresponding to the locking screw 6. The fixing screw 4, the X-direction limit screw 8, the locking screw 6 and the movable handle 2 are all hexagon socket screws.

[0026] The square fixing sleeve 3 is provided with two positioning pin holes, and the pin 10 passes through the positioning pin holes and is fixed to the fixing plate 102 of the fixing handle for easy installation. The fixing screw 4 is connected after positioning by the pin 10. The outer surfaces of the fixing chuck 7 and the sliding chuck 9 are provided with threaded holes 11 for easy replacement of new chucks.

[0027] Working principle:

[0028] When in use, the head of the movable handle 2 is rotated, and the end of the rod of the movable handle 2 pushes the sliding chuck 9 to overcome the force of the reset spring and move along the Y-direction slide groove 302 toward the fixed slide 7. The semi-cylindrical concave surfaces of the sliding chuck 9 and the fixed slide 7 are buckled and clamped together to clamp the pin sleeve to be turned, thereby realizing the positioning of the pin sleeve, avoiding unstable positioning of the pin sleeve during the turning process, and ensuring the product processing quality.

[0029] The above is a detailed description of the embodiments of the utility model, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of the invention of the utility model should still fall within the scope of this patent.

Claims

1. A lathe fixture for turning a pin sleeve, comprising a fixed handle for connecting to a lathe chuck, characterized in that: The fixing handle is composed of a handle shaft and a fixing plate arranged at one end of the handle shaft, the top surface of the fixing plate is provided with a square fixing sleeve, the right part of the top surface of the square fixing sleeve is provided with an X-direction slot parallel to the axial center line of the handle shaft, a fixing chuck is embedded in the X-direction slot, the left part of the top surface of the square fixing sleeve is provided with a Y-direction slide groove connected with the X-direction slot, and a sliding chuck is embedded in the Y-direction slide groove, and the opposing surfaces of the sliding chuck and the fixing chuck are provided with semi-cylindrical concave surfaces corresponding to each other, and the two semi-cylindrical concave surfaces can be buckled into a pin sleeve clamping space, the sliding chuck is provided with a Y-direction through hole and a reset spring is fixed in the Y-direction through hole, one end of the reset spring presses against the fixing chuck, and the left side wall of the square fixing sleeve is provided with a Y-direction threaded hole connected with the Y-direction slide groove, the rod portion of the movable handle is threadedly connected with the Y-direction threaded hole, and the end of the rod portion of the movable handle enters the Y-direction slide groove through the Y-direction threaded hole and presses the sliding chuck.

2. The lathe fixture for turning pin sleeves according to claim 1, characterized in that: The four corners of the square fixing sleeve are provided with fixing holes, and the tips of the fixing screws pass through the fixing holes and are connected and fixed to the fixing plate.

3. The lathe fixture for turning pin sleeves according to claim 1, characterized in that: A pair of Y-direction limiting edges are arranged on the outer peripheral surface of the fixing clamp, and a Y-direction limiting groove cooperating with the Y-direction limiting edges is arranged on the inner wall of the X-direction slot.

4. The lathe fixture for turning pin sleeves according to claim 1, characterized in that: An X-direction limiting screw is arranged between the side of the fixing chuck facing away from the semi-cylindrical concave surface and the square fixing sleeve.

5. The lathe fixture for turning pin sleeves according to claim 1, characterized in that: The cross-section of the sliding chuck is an inverted T-shape, and the top surface of the square fixing sleeve is provided with reducing grooves on both sides of the Y-direction sliding groove. A guide slide is embedded in the reducing groove, and the guide slide is pressed on the lower side wing of the sliding chuck. The two guide slides jointly clamp the sliding chuck, and the guide slide is connected and fixed to the square fixing sleeve by a locking screw.

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