Body tube machining tool clamp with error compensation function

Abstract

The barrel machining tool clamp with the error compensation function comprises a shell, a rotary disc, a transmission block and a clamping block, a cavity is formed in the shell, the rotary disc is rotatably connected to the interior of the cavity, a groove is formed in the left side of the rotary disc, the transmission block is connected to the interior of the groove in an engaged mode, and the clamping block is connected to the left side of the rotary disc. And the transmission block is rotationally connected to the interior of the top end of the shell, a clamping block is slidably connected to the side, away from the transmission block, of the rotating disc, a sleeve is fixed to the back of the shell, and a supporting plate is fixed to the inner wall of the sleeve. According to the anti-deformation design of the wall supporting structure, thread blocks are driven to move through threads, rotating in the opposite directions, on the two sides of a transmission rod, an ejector rod pushes an ejector plate to make contact with the inner wall of the barrel, a double-fixing mode of outer wall clamping and inner wall supporting is formed, and the design can effectively counteract the clamping pressure of clamping blocks on the outer wall of the barrel; and outer wall abrasion or structural damage caused by too large clamping force is prevented, and the device is particularly suitable for thin-wall or high-precision barrel machining.

Description

Technical Field

[0001] The present invention relates to the technical field of barrel processing, and in particular to a barrel processing fixture with an error compensation function. Background Art

[0002] In the field of barrel processing, the clamping stability and error compensation capabilities of the tooling fixture directly affect the product processing accuracy. At present, traditional barrel processing fixtures usually adopt a single outer wall clamping method, that is, fixation is achieved by applying pressure from the outside of the barrel through a clamping block. However, this clamping method has significant technical defects: when the clamping force is too large, the outer wall of the barrel will deform due to the concentrated pressure, especially for thin-walled or high-precision barrels, the deformation problem is more prominent; at the same time, due to the lack of a supporting structure for the inner wall of the barrel, the outer wall pressure cannot be offset by internal force balance during the clamping process, resulting in the barrel being prone to roundness deviation, axis offset and other precision problems after processing, seriously affecting the performance of the barrel;

[0003] In addition, the transmission systems of existing clamps mostly use ordinary tooth meshing or simple thread transmission, which is prone to transmission error accumulation during power transmission, resulting in asynchronous movement of the clamping blocks, further aggravating the uneven force on the barrel. At the same time, traditional clamps often lack effective limit and error compensation mechanisms, and are unable to make real-time adjustments to the tiny deformations caused by force during the clamping process, making processing errors difficult to control. Summary of the Invention

[0004] The object of the present invention is to provide a barrel processing fixture with an error compensation function to solve the problems raised in the above background technology.

[0005] The cam is secured to the upper edge of the housing, and the cam is secured to the lower edge of the housing with a secure coupling to the top of the housing, wherein the cam is secured to the lower edge of the housing with a secure coupling to the top of the housing.

[0006] Preferably, threads are processed on both sides of the outer wall of the transmission rod, and the threads on both sides are opposite to each other, so that the thread blocks will move inward or outward at the same time when rotating.

[0007] Preferably, a through groove is formed inside the transmission rod.

[0008] Preferably, the driving member includes a turntable, which is fixed at the center of the outer wall of the rotating rod, and a slot plate is fixed to the outer wall of the turntable.

[0009] Preferably, a plurality of hexagonal slots are equidistantly provided on the outer wall of the slot plate, thereby facilitating the worker to rotate it using tools.

[0010] Preferably, the fixing member includes a circular ring, which is sleeved on the outer wall of the fixing block, connecting rods are fixed on both sides of the outer wall of the circular ring, a slider is fixed on the side wall of the connecting rod, a push ring is sleeved on the outer wall of the slider, and the push ring is threadedly connected to the outer wall of the sleeve.

[0011] Preferably, the inner wall of the circular ring is processed with a plurality of clamping blocks, and the outer wall of the fixing block is provided with clamping grooves matching the clamping blocks.

[0012] Preferably, the limiting member includes a limiting rod, which is arranged inside the transmission rod, and limiting grooves are formed inside both sides of the limiting rod. The internal sliding connection of the limiting member is a limiting block, and the outer side of the limiting block is connected to the inner wall of the threaded block.

[0013] Preferably, a through slot is provided on the outer wall of the sleeve for the movement of the connecting rod and for facilitating the rotation of the slot plate by workers by inserting a tool into the sleeve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Transmission advantages of involute tooth profile design: The groove on the left side of the turntable adopts an involute tooth profile design and meshes with the transmission block with a special tooth profile, which can achieve stable and efficient power transmission, avoid power loss or vibration caused by tooth profile mismatch during transmission, and ensure the precise execution of the clamping action;

[0016] Synchronous clamping feature of the spiral groove structure: The spiral groove machined on the side wall of the turntable can drive the clamping block to move inward or outward synchronously as the turntable rotates, achieving uniform clamping of the barrel. This avoids the uneven force on the barrel caused by the asynchronous movement of the clamping block in traditional clamping methods, and improves clamping accuracy and reliability.

[0017] The anti-deformation design of the inner wall support structure: The threaded blocks are driven by the oppositely rotating threads on both sides of the transmission rod, and the push rod pushes the push plate into contact with the inner wall of the barrel, forming a dual fixing mode of "external wall clamping + internal wall support". This design can effectively offset the clamping pressure of the clamping blocks on the outer wall of the barrel, preventing outer wall wear or structural damage caused by excessive clamping force. It is particularly suitable for thin-walled or high-precision barrel processing.

[0018] The motion trajectory constraint of the limiter: The limiter rod inside the transmission rod cooperates with the limiter block to limit the motion trajectory of the threaded block, ensuring the linearity and positioning accuracy of the top plate during the pushing process, avoiding the support position offset caused by thread transmission error, compensating for processing errors, and improving the dimensional consistency of the barrel processing;

[0019] Tool-adaptive design of the drive components: The groove plate on the outer wall of the turntable is provided with equidistant hexagonal slots to facilitate the insertion of special tools to drive the rotating rod, reducing the difficulty of manual operation and improving the control efficiency of the transmission system. At the same time, the high-precision processing of the slots ensures transmission reliability after the tool is inserted;

[0020] The quick-limiting structure of the fixing part: the circular ring is matched with the fixing block slot through the trapezoidal tooth block, and the axial fixation is achieved with the threaded transmission of the push ring. The operator can quickly complete the limiting of the fixing block by rotating the push ring to avoid accidental rotation of the transmission system during processing. At the same time, the detachable connection method facilitates the installation and maintenance of the tooling fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 for Figure 1 Detailed diagram of the connection structure of the side section of the middle shell;

[0023] Figure 3 for Figure 2 Detailed diagram of the connection structure of the center turntable from the right side;

[0024] Figure 4 for Figure 1 Detailed view of the connection structure in the left section;

[0025] Figure 5 for Figure 4 A magnified detail view of the connection structure between the middle transmission rod and the threaded block;

[0026] Figure 6 for Figure 4 Detailed diagram of the connection structure between the middle push rod and the top plate in side section;

[0027] Figure 7 for Figure 4 Detailed diagram of the connection structure between the middle fixing block and the ring from the side view;

[0028] Figure 8 for Figure 4 Detailed diagram of the connection structure between the center turntable and the trough plate in side section;

[0029] Figure 9 for Figure 4 Detailed view of the connection structure of the middle transmission rod from the front cross section.

[0030] In the figure: 1, housing, 2, turntable, 3, transmission block, 4, clamping block, 5, sleeve, 6, support plate, 7, rotating rod, 8, turntable, 9, slot plate, 10, fixed block, 11, ring, 12, connecting rod, 13, slider, 14, push ring, 15, connecting plate, 16, transmission rod, 17, threaded block, 18, push rod, 19, top plate, 20, limit rod, 21, limit block. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-9 The present invention provides a technical solution for a barrel processing fixture with an error compensation function: a barrel processing fixture with an error compensation function, comprising a shell 1, a turntable 2, a transmission block 3 and a clamping block 4. A cavity is formed inside the shell 1, and the turntable 2 is rotatably connected inside the cavity. The groove on the left side of the turntable 2 adopts an involute tooth design, which meshes with the transmission block 3 to achieve stable and efficient power transmission. A spiral groove is machined on the side wall of the turntable 2. When the turntable 2 rotates, the clamping block 4 moves inward or outward at the same time. A groove is opened on the left side of the turntable 2, and the transmission block 3 is meshed inside the groove, and the transmission block 3 is rotatably connected to the top inside of the shell 1. The tooth shape of the transmission block 3 is specially designed to match the tooth shape in the groove of the turntable 2.

[0033] The turntable 2 is slidably connected to the clamping block 4 on the side away from the transmission block 3. A sleeve 5 is fixed to the back of the shell 1. The outer wall of the sleeve 5 is provided with an external thread for installing a push ring 14 to ensure that the push ring 14 can move axially smoothly during the rotation process. A connecting plate 15 is fixed to the back of the sleeve 5. The connecting plate 15 is used to connect the overall clamping work with the rotating equipment. A support plate 6 is fixed to the inner wall of the sleeve 5. The support plate 6 is used to provide stable support for the rotating rod 7. The center of the support plate 6 is rotatably connected to the rotating rod 7. When the rotating rod 7 rotates, the power can be transmitted The outer wall of the rotating rod 7 is provided with a driving part, and the end of the rotating rod 7 away from the support plate 6 is fixed with a fixed block 10. The outer wall of the fixed block 10 is provided with a fixing part, and the back of the rotating rod 7 is fixed with a transmission rod 16. The outer walls of the transmission rod 16 are processed with threads of opposite rotation directions on both sides, forming a precise thread pair with the internal thread of the thread block 17. When the transmission rod 16 rotates, due to the opposite rotation directions of the threads on both sides, the thread block 17 will move inward or outward at the same time, thereby realizing the driving of the push rod 18.

[0034] The outer wall of the transmission rod 16 is threadedly connected with threaded blocks 17 on both sides, and the outer walls of the threaded blocks 17 on both sides are rotatably connected with push rods 18. Driven by the threaded blocks 17, the push rods 18 can accurately transmit the force to the top plate 19, pushing the top plate 19 to support the inner wall of the barrel during processing, thereby preventing the outer wall of the barrel from being worn or damaged due to excessive fixing force on the barrel. The outer side of the push rod 18 is rotatably connected with the top plate 19, and a limit member is provided inside the transmission rod 16. Threads are processed on both sides of the outer wall of the transmission rod 16, and the threads on both sides are opposite. When rotating, the threaded blocks 17 will move inward or outward at the same time, and a through groove is formed inside the transmission rod 16.

[0035] The driving part includes a turntable 8, which is fixed at the center of the outer wall of the rotating rod 7. A slot plate 9 is fixed to the outer wall of the turntable 8, and the slot plate 9 is welded to the outer wall of the turntable 8. A plurality of hexagonal slots are equidistantly provided on the outer wall. The dimensional accuracy and shape accuracy of the slots are strictly controlled, which makes it convenient for the staff to use a special hexagonal tool to insert the slots, and drive the turntable 8 and the rotating rod 7 to rotate by rotating the tool, thereby realizing the drive of the entire transmission system. A plurality of hexagonal slots are equidistantly provided on the outer wall of the slot plate 9, which makes it convenient for the staff to rotate it by the tool.

[0036] The fixing part includes a circular ring 11, which is sleeved on the outer wall of the fixed block 10. The multiple blocks processed on the inner wall of the circular ring 11 adopt a trapezoidal tooth design, which matches the slots on the outer wall of the fixed block 10 and can provide reliable axial fixing force. Connecting rods 12 are fixed on both sides of the outer wall of the circular ring 11, and sliders 13 are fixed on the side walls of the connecting rod 12. The outer wall of the slider 13 is sleeved with a push ring 14, and the thread on the inner wall of the push ring 14 is an internal thread that matches the external thread on the outer wall of the sleeve 5. The operator rotates the push ring 14 and utilizes the principle of thread transmission to move the push ring 14 along the axial direction of the sleeve 5. The push ring 14 is threadedly connected to the outer wall of the sleeve 5. The inner wall of the circular ring 11 is processed with multiple blocks, and the outer wall of the fixed block 10 is provided with slots that match the blocks.

[0037] The limiting part includes a limiting rod 20, which is arranged inside the transmission rod 16, and the limiting rod 20 passes through the rotating rod 7 and is fixedly connected to the connecting plate 15. Limiting grooves are formed inside both sides of the limiting rod 20, and the internal sliding connection of the limit block 21 is connected to the limit block. The movement of the threaded block 17 is transmitted to the limiting block 21. At the same time, the limiting block 21 slides in the limiting groove to limit the movement trajectory of the threaded block 17. The outer side of the limiting block 21 is connected to the inner wall of the threaded block 17. A through groove is provided on the outer wall of the sleeve 5 for the movement of the connecting rod 12 and for the convenience of the staff to insert a tool into the sleeve 5 to rotate the slot plate 9.

[0038] Working principle: When a barrel processing fixture with error compensation function is put into use, when processing the barrel, the user places the barrel to be processed between the clamping blocks 4, and then the user rotates the transmission block 3 through the tool. When the transmission block 3 rotates, the transmission block 3 engages with the turntable 2 to drive the turntable 2 to rotate, and then the transmission block 3 is moved inward at the same time through the threaded groove on the outer wall of the turntable 2 to support and fix the barrel. After the barrel is fixed, the staff uses a hexagonal tool to extend and insert it into the interior of the slot plate 9 through the through groove on the outer wall of the sleeve 5. After insertion, the slot plate 9 is rotated. When the slot plate 9 rotates, the transmission rod 16 is driven to rotate at the same time through the rotating rod 7. When the transmission rod 16 rotates, it is driven by the threaded belt on the outer wall. The movable thread block 17 moves inward at the same time on the outer wall of the transmission rod 16, and pushes the top plate 19 outward through the push rod 18 during movement. After the top plate 19 contacts the inner wall of the barrel, the user stops rotating the slot plate 9, and then the user rotates the push ring 14 on the outer wall of the sleeve 5. The push ring 14 moves on the outer wall of the sleeve 5 during rotation. When moving, the circular ring 11 is driven to move at the same time by the connecting rod 12 and the circular ring 11 is sleeved on the outer wall of the fixed block 10 to limit it to prevent the fixed block 10 from rotating during the barrel processing. Supporting the inner wall of the barrel clamping position by the top plate 19 can effectively prevent the barrel from being damaged by the clamping block 4 on the outer wall of the barrel during processing.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A barrel processing fixture with an error compensation function, comprising a shell (1), a turntable (2), a transmission block (3) and a clamping block (4), wherein a cavity is formed inside the shell (1), and the turntable (2) is rotatably connected inside the cavity, a groove is provided on the left side of the turntable (2), and the transmission block (3) is meshedly connected inside the groove, and the transmission block (3) is rotatably connected to the top end of the shell (1), and the clamping block (4) is slidably connected to the side of the turntable (2) away from the transmission block (3), characterized in that A sleeve (5) is fixed to the back of the housing (1), a support plate (6) is fixed to the inner wall of the sleeve (5), a rotating rod (7) is rotatably connected to the center of the support plate (6), a driving member is provided on the outer wall of the rotating rod (7), a fixing block (10) is fixed to the end of the rotating rod (7) away from the support plate (6), a fixing member is provided on the outer wall of the fixing block (10), a transmission rod (16) is fixed to the back of the rotating rod (7), threaded blocks (17) are threadedly connected to the outer walls of the transmission rod (16), a push rod (18) is rotatably connected to the outer walls of the threaded blocks (17), the outer sides of the push rod (18) are rotatably connected to the top plate (19), and a limiting member is provided inside the transmission rod (16).

2. The barrel processing fixture with error compensation function according to claim 1, characterized in that: The outer wall of the transmission rod (16) is processed with threads on both sides, and the threads on both sides are opposite to each other. When the transmission rod (16) is rotated, the thread block (17) will move inward or outward at the same time.

3. The barrel processing fixture with error compensation function according to claim 1, characterized in that: A through groove is formed inside the transmission rod (16).

4. The barrel processing fixture with error compensation function according to claim 1, characterized in that: The driving member comprises a turntable (8), the turntable (8) is fixed at the center of the outer wall of the rotating rod (7), and a slot plate (9) is fixed to the outer wall of the turntable (8).

5. The barrel processing fixture with error compensation function according to claim 4, characterized in that: The outer wall of the slot plate (9) is provided with a plurality of hexagonal slots at equal intervals, thereby facilitating the rotation of the slot plate by a worker using a tool.

6. The barrel processing fixture with error compensation function according to claim 1, characterized in that: The fixing member comprises a circular ring (11), the circular ring (11) is sleeved on the outer wall of the fixing block (10), connecting rods (12) are fixed on both sides of the outer wall of the circular ring (11), a slider (13) is fixed to the side wall of the connecting rod (12), a push ring (14) is sleeved on the outer wall of the slider (13), and the push ring (14) is threadedly connected to the outer wall of the sleeve (5).

7. The barrel processing fixture with error compensation function according to claim 6, characterized in that: The inner wall of the circular ring (11) is processed with a plurality of clamping blocks, and the outer wall of the fixed block (10) is provided with clamping grooves matching the clamping blocks.

8. The barrel processing fixture with error compensation function according to claim 1, characterized in that: The limiting member comprises a limiting rod (20), the limiting rod (20) being arranged inside the transmission rod (16), limiting grooves being formed inside both sides of the limiting rod (20), and the limiting interior being slidably connected to a limiting block (21), the outer side of the limiting block (21) being connected to the inner wall of the threaded block (17).

9. The barrel processing fixture with error compensation function according to claim 1, characterized in that: The outer wall of the sleeve (5) is provided with a through slot for the movement of the connecting rod (12) and for facilitating the rotation of the slot plate (9) by a worker by inserting a tool into the sleeve (5).

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