Clamp for lathe machining of eccentric deep hole

Abstract

The utility model discloses a lathe processing eccentric deep hole clamp, which belongs to the technical field of machining, and comprises a clamp main body, one side of the clamp main body is provided with a fixing groove, and the top end of an arc sheet is rotatably connected with a positioning mechanism; a telescopic mechanism is slidably connected to the bottom end of the arc piece, linkage mechanisms are rotatably connected to the front end and the rear end of the arc piece, and limiting mechanisms are fixedly connected to the front end and the rear end of the clamp body. A workpiece is quickly and stably fixed through the positioning mechanism, so that the machining efficiency is improved; due to the design of a blocking piece in the telescopic mechanism, the fixing groove is effectively shielded, the workpiece is prevented from deviating, gaskets are allowed to be flexibly added to adjust the eccentricity of the workpiece, and the adaptability and stability of the clamp are enhanced; the linkage mechanism automatically drives the blocking piece to stretch out through the downward moving action of the arc piece, automatic shielding is achieved, meanwhile, the blocking piece can be folded and reset conveniently, and the operation convenience and the space utilization rate are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, especially a lathe processing eccentric deep hole clamp. BACKGROUND

[0002] The lathe processing eccentric deep hole clamp is a tooling specially designed for a lathe, which is used for accurately clamping a workpiece to realize the processing of an eccentric deep hole.

[0003] When processing an eccentric deep hole, the lathe needs to stably fix the workpiece, at which time the lathe processing eccentric deep hole clamp needs to be used. Since the workpiece to be processed is mostly cylindrical, its gravity center is unstable, and the positioning process is quite tricky. The traditional clamp is full of various positioning structures, which need to be fixed at the upper and lower parts of the workpiece respectively. This not only makes the positioning structures numerous, but also makes the operation process complicated. Not only is the process of fixing the workpiece lengthy, but also the process of disassembling the workpiece after processing is also inconvenient.

[0004] Therefore, it is urgent to provide a lathe processing eccentric deep hole clamp to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model wants to overcome the above-mentioned prior art's shortcomings, and provides a lathe processing eccentric deep hole clamp.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a lathe processing eccentric deep hole clamp, which comprises a clamp main body, a fixing groove is formed on one side of the clamp main body, a workpiece to be processed is placed at the bottom of the fixing groove, an arc piece is slidably connected to the top of the inner wall of the fixing groove, and a positioning mechanism is rotatably connected to the top of the arc piece.

[0007] The bottom of the arc piece is slidably connected to an extension mechanism, the front and rear ends of the arc piece are rotatably connected to a linkage mechanism, and the front and rear ends of the clamp main body are fixedly connected to a limiting mechanism.

[0008] The utility model is further provided as follows: the bottom of the clamp main body is fixedly connected to a T-shaped block one, and a plurality of fixing holes are formed on the two sides of the T-shaped block one.

[0009] Through the precise cooperation of the T-shaped block one and the fixing hole, the clamp main body can be stably installed on the lathe. Meanwhile, this design also facilitates the quick disassembly of the clamp main body, realizes the efficient and convenient disassembly process, and is simple and practical.

[0010] The utility model further sets up: the positioning mechanism includes two axle one with the top end rotation connection of arc piece, the top end of two axle one is fixedly connected with bolt respectively, two bolts all are with clamp main part through screw thread rotation connection.

[0011] Through the above technical scheme, the main function of the positioning mechanism is to quickly fix the workpiece placed in the fixed groove of the clamp main body, when operating, only need to place the workpiece in the fixed groove, then rotate two bolts synchronously, the two bolts will drive two axle one to descend synchronously, descend while rotating, further drive the arc piece to move downwards, until the arc piece is in close contact with the workpiece and abuts against the workpiece, at this time, tighten two bolts, can quickly and stably complete the fixation of the workpiece, the whole process is efficient and convenient.

[0012] The utility model further sets up: the telescopic mechanism includes the groove one that sets up in the bottom of arc piece and is T type, two T type block two are connected in the groove one and slide, the bottom of two T type block two is fixedly connected with the baffle, the baffle is also arc shape.

[0013] Through the above technical scheme, the design of telescopic mechanism aims at adding a baffle below the arc piece, to shield the fixed groove, when the arc piece is in close contact with the workpiece, the baffle is just located at the opening position of the fixed groove, effectively blocks external interference, prevents the workpiece from deviating due to instability, through T type block two, the baffle can deflect and slide along the groove one at the bottom of the arc piece, in addition, this design also allows flexible addition of gaskets between the arc piece and the workpiece, which brings two benefits: first, by increasing the friction between the arc piece and the workpiece, further stabilize the workpiece, avoid its deviation, ensure that the workpiece is fixed more firmly;Second, the use of gaskets can adjust the eccentricity of the workpiece according to actual demand, providing additional flexibility and adaptability.

[0014] The utility model further sets up: the linkage mechanism includes two ratchets one that fixed connection is in the top of arc piece front and rear two ends respectively, the top of clamp main body front and rear two ends is rotatably connected with toothed disc one, two toothed disc one is meshed with two ratchets one respectively, the top of clamp main body front and rear two ends still rotatably connected with toothed disc two, two toothed disc two is meshed with two toothed disc one respectively, and the radius of toothed disc two is less than the radius of toothed disc one, the side of baffle front and rear two ends is rotatably connected with ratchet two respectively, two ratchets two is meshed with toothed disc two respectively.

[0015] Through the technical scheme, the function of the linkage mechanism is to drive the extension of the baffle through the downward movement of the arc piece, specifically, when the arc piece descends, it first drives the rack I to move downward synchronously, this movement further promotes the rotation of the gear plate I, the rotation of the gear plate I is transmitted to the gear plate II, so that the gear plate II rotates, and finally drives the rack II to move downward, during the downward movement of the rack II, it will deflect, the deflection causes one side of the baffle to deflect, and promotes the deflection sliding of the baffle along the groove I at the bottom of the arc piece, the radius of the gear plate II is smaller than that of the gear plate I, which makes the sliding range of the rack II larger than that of the rack I, and facilitates the deflection of the rack II, therefore, when the arc piece moves downward to the predetermined position, the baffle can automatically rotate to the opening of the fixed groove, and plays a shielding role, and when the arc piece rises, the baffle is automatically reset to the initial state, this design not only enables the baffle to be retracted when not in use, saves space, and facilitates maintenance, but also allows the inside of the fixed groove to be easily cleaned, in addition, for workpieces with small diameters, the workpieces can be conveniently taken out through the opening end of the fixed groove, and the operation convenience is improved.

[0016] The utility model further sets up: the limiting mechanism includes L type piece fixed connection respectively in the clamp main part front and back both ends top, two L type piece is connected with two rack I sliding respectively, two rack I, two rack II far from gear plate I's one side all sliding connection has L type board, a plurality of L type board is connected with two gear plate I, two gear plate II rotation respectively.

[0017] Through the technical scheme, the main function of the limiting mechanism is to ensure that the rack I and the rack II can stably slide along the predetermined path, and provide a guiding effect, specifically, the L type piece is designed to limit the movement track of the rack I, and ensure that it can only slide in the specified direction, at the same time, the L type board plays a key role, which ensures that the gear plate I and the rack I, and the gear plate II and the rack II always maintain the correct meshing state, such design not only improves the convenience of use, but also enhances the accuracy of control, so that the operation of the whole mechanism is more smooth and efficient.

[0018] The utility model has the advantages that:

[0019] 1. The utility model discloses a positioning mechanism is fixed to workpiece quickly and stably, improves processing efficiency, the baffle design in telescopic mechanism not only effectively shields the fixed groove and prevents workpiece deviation, but also allows flexible addition of shims to adjust workpiece eccentricity, enhances the adaptability and stability of the clamp, the linkage mechanism utilizes the downward movement of the arc piece to automatically drive the baffle to extend, realizes automatic shielding, and the baffle is convenient to retract and reset, improves the convenience of operation and space utilization rate.

[0020] 2. The utility model discloses a limiting mechanism ensures the correct meshing of rack and pinion, guarantees the stability of sliding and the accuracy of guiding, T block no. 1 of fixture main part bottom cooperates with fixed hole, realizes the stable installation and quick disassembly of fixture on lathe, improves the convenience of dismounting, and the fixture main part structure is compact, the function is comprehensive, guarantees the precision and efficiency of workpiece processing, provides convenient dismounting and maintenance, and the overall performance of lathe processing eccentric deep hole is improved significantly. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the first view structure diagram of the utility model;

[0022] Figure 2 It is the second view sectional view of the utility model;

[0023] Figure 3 It is another orientation sectional view of Figure 2

[0024] Figure 4 It is the local enlarged view of A in Figure 3

[0025] Figure 5 It is another orientation sectional view of Figure 3

[0026] Figure 6 It is the local enlarged view of B in Figure 5

[0027] In the drawing: 1, fixture main part;2, fixed groove;3, workpiece;4, circular arc piece;5, positioning mechanism;501, shaft one;502, bolt;6, telescopic mechanism;601, groove one;602, T block two;603, baffle;7, linkage mechanism;701, rack one;702, pinion one;703, pinion two;704, rack two;8, limiting mechanism;801, L type block;802, L type board;9, T block one;10, fixed hole. DETAILED DESCRIPTION

[0028] The preferred embodiments of the utility model are described in detail below in combination with the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model is more clearly and explicitly defined.

[0029] Please refer to Figures 1-6 ​​​​This embodiment provides a lathe machining fixture for eccentric deep holes, comprising a fixture body 1. A fixing groove 2 is formed on one side of the fixture body 1. A workpiece 3 to be machined is placed at the bottom of the fixing groove 2. An arc-shaped piece 4 is slidably connected to the top of the inner wall of the fixing groove 2. A positioning mechanism 5 is rotatably connected to the top of the arc-shaped piece 4. The positioning mechanism 5 includes two shafts 501 rotatably connected to the top of the arc-shaped piece 4. Bolts 502 are fixedly connected to the tops of the two shafts 501 respectively. Both bolts 502 are rotatably connected to the fixture body 1 via threads. Its main function is to quickly fix the workpiece 3 to be processed in the fixing groove 2 of the fixture body 1. During operation, simply place the workpiece 3 in the fixing groove 2, and then rotate the two bolts 502 simultaneously. The two bolts 502 will work together to drive the two shafts 501 to descend synchronously. As the shafts 501 rotate, they descend, thereby driving the arc plate 4 to move downward until the arc plate 4 is in close contact with the workpiece 3 and presses against the workpiece 3. At this time, tighten the two bolts 502 to quickly and firmly fix the workpiece 3. The whole process is both efficient and convenient.

[0030] like Figures 3-4 As shown, a telescopic mechanism 6 is slidably connected to the bottom end of the arc-shaped piece 4. The telescopic mechanism 6 includes a T-shaped groove 601 at the bottom end of the arc-shaped piece 4. Two T-shaped blocks 602 are slidably connected in the groove 601. A baffle 603 is fixedly connected to the bottom end of each of the two T-shaped blocks 602. The baffle 603 is also arc-shaped. The telescopic mechanism 6 is designed to add a baffle 603 below the arc-shaped piece 4 to cover the fixed groove 2. When the arc-shaped piece 4 is tightly attached to the workpiece 3, the baffle 603 is exactly located at the opening of the fixed groove 2, effectively blocking external interference. To prevent workpiece 3 from shifting due to instability, the T-block 602 allows the baffle 603 to slide along the groove 601 at the bottom of the arc plate 4. Furthermore, this design allows for the flexible addition of shims between the arc plate 4 and workpiece 3, offering two main benefits: first, by increasing the friction between the arc plate 4 and workpiece 3, workpiece 3 is further stabilized, preventing shifting and ensuring a more secure fixation; second, the use of shims allows for adjustment of the eccentricity of workpiece 3 according to actual needs, providing additional flexibility and adaptability.

[0031] like Figures 5-6As shown, the front and rear ends of the arc piece 4 are rotationally connected with a linkage mechanism 7, the linkage mechanism 7 includes two racks one 701 fixedly connected at the top of the front and rear ends of the arc piece 4 respectively, the top of the front and rear ends of the jig body 1 is rotationally connected with a gear disc one 702 respectively, the two gear discs one 702 are mutually engaged with the two racks one 701 respectively, the top of the front and rear ends of the jig body 1 is further rotationally connected with a gear disc two 703 respectively, the two gear disc twos 703 are mutually engaged with the two gear discs one 702 respectively, and the radius of the gear disc two 703 is smaller than that of the gear disc one 702, one side of the front and rear ends of the baffle 603 is rotationally connected with a rack two 704 respectively, the two rack twos 704 are mutually engaged with the gear disc two 703 respectively, the function of the linkage mechanism 7 is to drive the baffle 603 to extend through the downward movement of the arc piece 4, specifically, when the arc piece 4 descends, it first drives the rack one 701 to move downward synchronously, this movement further promotes the rotation of the gear disc one 702, the rotation of the gear disc one 702 is further transmitted to the gear disc two 703, so that the gear disc two 703 rotates, and finally drives the rack two 704 to move downward, in the downward movement of the rack two 704, it will deflect, this deflection causes one side of the baffle 603 to deflect, and promotes the baffle 603 to deflect and slide along the groove one 601 at the bottom of the arc piece 4, the advantage of the radius of the gear disc two 703 being smaller than that of the gear disc one 702 is that the sliding amplitude of the rack two 704 is greater than that of the rack one 701, which facilitates the deflection of the rack two 704, therefore, when the arc piece 4 moves downward to the predetermined position, the baffle 603 can automatically rotate to the opening of the fixed groove 2, and plays a shielding role, when the arc piece 4 rises, the baffle 603 will automatically reset to the initial state, this design not only enables the baffle 603 to be stowed when not in use, saves space, and facilitates maintenance, but also allows the inside of the fixed groove 2 to be easily cleaned, in addition, for the workpiece 3 with a smaller diameter, it can be conveniently taken out through the opening end of the fixed groove 2, improving the convenience of operation.

[0032] As Figures 5-6As shown, the front and rear ends of the clamp body 1 are fixedly connected with a limiting mechanism 8, the limiting mechanism 8 comprises L-shaped blocks 801 fixedly connected to the top of the front and rear ends of the clamp body 1 respectively, the two L-shaped blocks 801 are slidably connected with two rack one 701 respectively, the two rack one 701 and two rack two 704 are slidably connected with L-shaped plates 802 away from one side of the tooth disc one 702, the plurality of L-shaped plates 802 are rotatably connected with the two tooth disc one 702 and the two tooth disc two 703 respectively, the main function of the limiting mechanism 8 is to ensure that the rack one 701 and the rack two 704 can stably slide along the predetermined path and provide a guiding effect, specifically, the L-shaped block 801 is designed to limit the movement track of the rack one 701, so that it can only slide in the specified direction, at the same time, the L-shaped plate 802 plays a key role, which ensures that the tooth disc one 702 and the rack one 701, and the tooth disc two 703 and the rack two 704 always maintain the correct meshing state, such design not only improves the convenience of use, but also enhances the accuracy of control, so that the operation of the whole mechanism is more smooth and efficient.

[0033] As shown in the figure, Figures 1-6 As shown, the bottom end of the clamp body 1 is fixedly connected with a T-shaped block one 9, a plurality of fixing holes 10 are formed in the two sides of the T-shaped block one 9, through the precise cooperation of the T-shaped block one 9 and the fixing hole 10, the clamp body 1 can be stably installed on the lathe, and at the same time, this design also facilitates the quick disassembly of the clamp body 1, realizes the efficient and convenient disassembly process, which is simple and practical.

[0034] In use, the clamp body 1 is provided with a fixing groove 2 for placing a workpiece 3, the rotating bolt 502 drives the arc piece 4 to abut against the workpiece 3, and the workpiece 3 is quickly and stably fixed, and at the same time, a metal drill bit or tool for machining is installed on the main shaft of the lathe, when the main shaft of the lathe rotates, the machining cutter rotates around the workpiece 3 to perform machining, when the arc piece 4 slides downward, the rack one 701 slides, and then the tooth disc one 702 rotates, thereby driving the small radius tooth disc two 703 to rotate, and then driving the rack two 704 to deflect and slide downward, so that the baffle 603 deflects to the opening end of the fixing groove 2 to shield, so as to prevent the workpiece 3 from deviating, the L-shaped block 801 limits the track of the rack one 701, and the L-shaped plate 802 ensures that the tooth disc and the rack are correctly meshed, so as to ensure stable sliding and accurate guiding, the T-shaped block one 9 at the bottom of the clamp body 1 cooperates with the fixing hole 10, and is stably installed on the lathe and easy to disassemble, in the whole process, the arc piece 4, the baffle 603, the rack one 701 and the tooth disc one 702 cooperate to realize stable workpiece 3, shielding workpiece 3, guiding and convenient disassembly, and improve the machining efficiency and precision.

[0035] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made according to the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A lathe fixture for machining eccentric deep holes, comprising a fixture body (1), characterized in that: The fixture body (1) has a fixed groove (2) on one side. The workpiece (3) to be processed is placed at the bottom of the fixed groove (2). The top of the inner wall of the fixed groove (2) is slidably connected to an arc plate (4). The top of the arc plate (4) is rotatably connected to a positioning mechanism (5). The bottom end of the arc plate (4) is slidably connected to a telescopic mechanism (6), the front and rear ends of the arc plate (4) are rotatably connected to a linkage mechanism (7), and the front and rear ends of the clamp body (1) are fixedly connected to a limit mechanism (8).

2. A lathe fixture for machining eccentric deep holes according to claim 1, characterized in that: The bottom end of the fixture body (1) is fixedly connected to a T-shaped block (9), and multiple fixing holes (10) are provided on both sides of the T-shaped block (9).

3. A lathe fixture for machining eccentric deep holes according to claim 1, characterized in that: The positioning mechanism (5) includes two shafts (501) rotatably connected to the top of the arc plate (4). The top of the two shafts (501) are respectively fixedly connected to bolts (502), and both bolts (502) are rotatably connected to the fixture body (1) by threads.

4. A lathe fixture for machining eccentric deep holes according to claim 1, characterized in that: The telescopic mechanism (6) includes a T-shaped groove (601) at the bottom of the arc plate (4). Two T-shaped blocks (602) are slidably connected in the groove (601). A baffle (603) is fixedly connected to the bottom of each of the two T-shaped blocks (602). The baffle (603) is also arc-shaped.

5. A lathe fixture for machining eccentric deep holes according to claim 4, characterized in that: The linkage mechanism (7) includes two racks (701) fixedly connected to the top of the front and rear ends of the arc plate (4). The top of the front and rear ends of the clamp body (1) is rotatably connected to a gear disk (702). The two gear disks (702) mesh with the two racks (701). The top of the front and rear ends of the clamp body (1) is also rotatably connected to a gear disk (703). The two gear disks (703) mesh with the two gear disks (702). The radius of the gear disks (703) is smaller than the radius of the gear disks (702). The side of the front and rear ends of the baffle (603) is rotatably connected to a rack (704). The two racks (704) mesh with the gear disks (703).

6. A lathe fixture for machining eccentric deep holes according to claim 5, characterized in that: The limiting mechanism (8) includes L-shaped blocks (801) fixedly connected to the top of the front and rear ends of the clamp body (1). The two L-shaped blocks (801) are slidably connected to the two racks (701). The two racks (701) and the two racks (704) are slidably connected to the side away from the gear disk (702). The multiple L-shaped plates (802) are rotatably connected to the two gear disks (702) and the two gear disks (703).

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