Reaming clamp

Abstract

The invention relates to the field of machining, in particular to a reaming clamp which comprises a base, the base is provided with at least one mounting groove, the base is provided with an overhanging mechanism corresponding to the mounting groove, the overhanging mechanism comprises two limiting units, and the two limiting units are arranged on the two sides of the mounting groove respectively. The limiting unit comprises a supporting frame, the supporting frame is provided with a fixing seat, the fixing seat is provided with a mounting hole, and the mounting hole is detachably provided with a limiting shaft. According to the reaming clamp provided by the invention, the mounting groove is formed in the base, so that the frame body of the special-shaped component can be placed in the mounting groove, the limiting shaft is inserted into the fixing seat at the top of the supporting frame, the limiting shaft penetrates through the top lug piece at the top of the frame body to fix the frame body in an overhanging manner, and the tail beam at the side part of the frame body can be supported through the top surface of the base; matched reaming of the tail beam and other workpieces on the base is facilitated, and reaming precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of mechanical processing, in particular to a reaming fixture. Background Art

[0002] Traditional reaming is a method of using a reamer to remove a trace amount of metal layer from the hole wall of the workpiece to improve its dimensional accuracy and hole surface quality. For smaller holes, reaming is a more economical and practical processing method compared to internal cylindrical grinding and fine boring.

[0003] like Figure 1 As shown, it is a structural schematic diagram of a special-shaped component 1, the workpiece includes a frame 11, two top ears 111 are arranged on the top of the frame 11, and two bottom ears 112 are arranged on the bottom side of the frame 11, the top ears 111 and the bottom ears 112 are both provided with ear holes, the bottom of the frame 11 is without a reference and cannot be placed stably on the workbench, a tail beam 12 is arranged on one side of the frame, and the tail beam 12 is provided with an assembly hole, when in use, the frame 11 needs to be installed on the main frame through the top ears 111 and the bottom ears 112, and the tail beam 12 needs to be assembled and connected with other workpieces through the assembly holes, so in the manufacturing process, for the assembly holes on the tail beam 12, it is necessary to perform boring operations on the tail beam 12 and other workpieces under simulated assembly conditions to ensure the assembly accuracy of the tail beam 12 and other workpieces, but the special-shaped component has a special shape, and the tail beam 12 is in a suspended position, and it is difficult to stably clamp it with traditional tooling and fixtures, and the boring accuracy of the assembly holes on the tail beam 12 cannot be ensured.

[0004] Therefore, a technical solution is currently needed to solve the technical problem that for special-shaped components with no reference at the bottom of the frame and a suspended tail beam on one side, the tail beam needs to be assembled and reamed with other workpieces, and traditional tooling fixtures are difficult to stably clamp the special-shaped components and cannot ensure the accuracy of the reamed holes. Summary of the invention

[0005] The purpose of the present invention is to provide a reaming fixture to solve the technical problem that there is no reference at the bottom of the frame and a special-shaped component with a suspended tail beam on one side, the tail beam needs to be assembled and reamed with other workpieces, and traditional tooling fixtures are difficult to stably clamp the special-shaped component and cannot ensure the reaming accuracy.

[0006] The present invention provides a reaming fixture, comprising a base, wherein the base is provided with at least one mounting groove, a cantilever mechanism is provided on the base corresponding to the mounting groove, the cantilever mechanism comprises two limit units, the two limit units are respectively arranged on both sides of the mounting groove, the limit units comprise a support frame, the support frame is provided with a fixed seat, the fixed seat is provided with a mounting hole, and the mounting hole is detachably provided with a limit shaft.

[0007] The present invention provides a reaming fixture. When in use, a frame of a special-shaped component is placed in an installation groove, a tail beam at a side of the frame falls on the top surface of a base, the tail beam is supported by the base, a limiting shaft is inserted into a fixing seat at the top of a support frame, and the limiting shaft passes through an ear piece at the top of the frame to cantilever and fix the frame, thereby achieving stable support for the tail beam at the side of the frame under the premise of fixing the frame, facilitating reaming of holes in coordination with the tail beam and other workpieces on the base, and ensuring reaming accuracy.

[0008] Preferably, the base comprises a pedestal and a support platform, and a support assembly is arranged between the pedestal and the support platform.

[0009] The base is composed of a base, a supporting assembly and a supporting platform. Compared with directly using a whole solid base, the base has a lower weight, a simpler block manufacturing process, and reduces the production cost of the entire fixture.

[0010] Preferably, the support assembly includes a plurality of columns, which are arranged around the edge of the base, and also includes a crossbar, the top of each column is connected to the crossbar, and the support platform is arranged on the crossbar.

[0011] A number of columns arranged around the edge of the base provide stable support for the top crossbar and the support platform, while ensuring that the entire support assembly uses less material and is lighter.

[0012] Preferably, an oblique brace is connected between two adjacent columns.

[0013] By connecting a diagonal brace between two columns, the pressure bearing capacity of the columns is strengthened and the stability of the device support platform is improved.

[0014] Preferably, the limiting shaft is provided with a weight-reducing hole, and the weight-reducing hole passes through two ends of the limiting shaft along the axis direction of the limiting shaft.

[0015] The operation of the limit shaft is usually done manually. The setting of the weight-reducing hole can greatly reduce the weight of the limit shaft, making the installation and removal of the limit shaft more convenient.

[0016] Preferably, a rotating rod is provided at one end of the limiting shaft away from the mounting groove.

[0017] The rotating rod provides a position for the operator to hold the hand, and the operator can hold the rotating rod to perform operations such as horizontal pushing and rotating of the limit shaft.

[0018] Preferably, in the same cantilever mechanism, one of the limiting units is provided with a pressure plate, and the pressure plate is detachably connected to one end of the limiting shaft via bolts.

[0019] After the limiting shaft passes through the ear piece on the top of the frame, a pressure plate is connected to the end of the limiting shaft so that the pressure plate can press the ear piece against the side of the fixed seat, thereby achieving the limitation of the workpiece along the axial direction of the limiting shaft, making the workpiece fixed more firmly and avoiding displacement during the reaming process, which affects the reaming accuracy.

[0020] Preferably, an anti-rotation mechanism is provided at the bottom of the mounting groove, the anti-rotation mechanism comprises a connecting seat, a limit block is provided at the top of the connecting seat, the limit block is provided with a U-shaped groove, and the U-shaped groove is equipped with an anti-rotation pin.

[0021] When in use, the two bottom ear pieces of the special-shaped component are placed on both sides of the limit block, and the anti-rotation pin is passed through the first bottom ear piece, the limit block and the second bottom ear piece in sequence, thereby limiting the horizontal rotation of the bottom of the frame. The anti-rotation pin is installed in a U-shaped groove. While being able to achieve horizontal anti-rotation, it can to a certain extent avoid the problem that the anti-rotation pin cannot be connected to the bottom ear piece due to the height error of the limit block, making it easier to connect the anti-rotation pin and the two ear pieces.

[0022] Preferably, a height adjustment mechanism is provided on the top of the base, the height adjustment mechanism can be extended or shortened, and the height adjustment mechanism is used to support the tail beam of the special-shaped component.

[0023] When the distance between the height of the top surface of the base and the axis of the limit shaft deviates from the theoretical value, after the limit shaft fixes the top ear of the special-shaped component, the tail beam may not fall on the top surface of the base, or the height of the tail beam is lower than the height of the top surface of the base, resulting in installation interference. Therefore, when designing, the distance from the axis of the mounting hole to the top surface of the base is designed to be larger than the theoretical value. After the top ear of the special-shaped component is fixed, the tail beam will be located above the top surface of the base, and the bottom surface of the tail beam will be supported by the height adjustment mechanism to avoid the above problem.

[0024] Preferably, the number of the mounting grooves is two, and the two mounting grooves are symmetrically arranged on both sides of the base.

[0025] When two symmetrical special-shaped components need to be connected together through other workpieces, it is necessary to cooperate with the left special-shaped component and the other workpieces to drill holes, and it is also necessary to cooperate with the right special-shaped component and the other workpieces to drill holes. Therefore, in this solution, two installation grooves are symmetrically arranged on the base, and each installation groove is equipped with a cantilever mechanism, so that the tail beams of the two symmetrical special-shaped components can cooperate with other shared workpieces to drill holes at the same time, thereby reducing the number of clamping times and avoiding drilling errors caused by repeated clamping.

[0026] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a reaming fixture, which provides an installation groove on the base so that the frame of the special-shaped component can be placed in the installation groove, and a limiting shaft is inserted into the fixed seat on the top of the support frame. The limiting shaft passes through the top ear piece on the top of the frame to cantilever and fix the frame, and the tail beam on the side of the frame can be supported by the top surface of the base, so that the tail beam and other workpieces can be easily reamed on the base to ensure the reaming accuracy. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of a special-shaped component to be reamed; Figure 2 It is an axonometric view of a reaming fixture of the present invention; Figure 3 yes Figure 2 Enlarged view of area A in the middle; Figure 4 yes Figure 2 Enlarged view of area B in the middle; Figure 5 It is an axonometric diagram of a reaming fixture of the present invention in use; Figure 6 yes Figure 5 Enlarged view of area C in the middle; Figure 7 It is a top view of a reaming fixture of the present invention in use; Figure 8 yes Figure 7 Enlarged view of area D in the middle; Markings in the figure: 1-special-shaped component, 11-frame, 111-top ear, 112-bottom ear, 113-ear hole, 12-tail beam, 2-base, 201-installation slot, 21-base, 22-support platform, 23-support assembly, 231-column, 232-cross bar, 233-diagonal support rod, 3-cantilever mechanism, 31-limiting unit, 311-support frame, 312-fixed seat, 3121-installation hole, 313-limiting shaft, 3131-pressure plate, 3132-weight reduction hole, 3133-rotating rod, 4-anti-rotation mechanism, 41-connecting seat, 42-limiting block, 421-U-shaped slot, 43-anti-rotation pin, 5-other workpieces, 6-adjusting unit, 61-screw, 62-turntable, 63-tightening nut. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0028] Unless otherwise specified, in the description of the specific embodiments of the present invention, the terms indicating the orientation or position relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all expressions based on the orientation or position relationship shown in the drawings, or are the orientation or position relationship when the invented product / equipment / device is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the present invention or simplifying the description in the specific embodiments, so as to facilitate the technicians to quickly understand the scheme, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the scheme of the present invention.

[0030] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0031] In addition, in the description of the embodiments of the present invention, "several", "plurality" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0032] In addition, in the description of the technical solution of the present invention, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.

[0033] Example 1 like Figure 1 , Figure 2 and Figure 5 As shown, a reaming fixture includes a base, the base is provided with at least one mounting groove 201, a cantilever mechanism 3 is provided on the base 2 corresponding to the mounting groove 201, the cantilever mechanism 3 includes two limit units 31, the two limit units 31 are respectively arranged on both sides of the mounting groove 201, the limit unit 31 includes a support frame 311, the support frame 311 is provided with a fixed seat 312, the fixed seat 312 is provided with a mounting hole, the mounting hole is detachably provided with a limit shaft 313, wherein the limit shaft 313 can be connected to the mounting hole of the fixed seat 312 by a threaded connection, and can also be directly nested in the mounting hole.

[0034] When in use, the frame 11 of the special-shaped component 1 is placed in the installation groove 201, and the tail beam 12 on the side of the frame 11 falls on the top surface 2 of the base. The tail beam 12 is supported by the base 2, and the limiting shaft is inserted into the fixed seat 312 on the top of the support frame 311. The limiting shaft passes through 313 and passes through the top ear piece 111 of the frame 11 to cantilever and fix the frame 11, thereby achieving stable support for the tail beam 12 on the side of the frame 11 under the premise of fixing the frame 11, which facilitates the coordinated reaming of the tail beam 12 and other workpieces 5 on the base 2 to ensure the reaming accuracy.

[0035] Base 2: The base 2 includes a base 21 and a support platform 22. An avoidance groove is provided on the top surface of the support platform 22 corresponding to the installation groove 201. The avoidance groove is provided on one side of the installation groove 201 extending into the support platform 22. The support frame 311 located on this side is provided at the bottom of the avoidance groove and extends the avoidance groove upward. The provision of the avoidance groove not only facilitates the provision of the support frame 311 on this side, but also can greatly reduce the weight of the base 2, reduce the cost investment, and facilitate the movement of the entire base 2. A support assembly 23 is provided between the base 21 and the support platform 22. The support assembly 23 includes a plurality of columns 231. The plurality of columns 231 are provided around the edge of the base 21, and also include a cross bar 232. The top of each of the columns 231 is connected to the cross bar 232. The support platform 22 is provided on the cross bar 232, and a diagonal support rod 233 is connected between two adjacent columns 231.

[0036] Example 2 like Figure 2 and Figure 5 As shown, in this embodiment, the difference from Embodiment 1 is that in the same cantilever mechanism 3, one of the limiting units 31 is provided with a pressure plate, and the pressure plate 3131 is detachably connected to one end of the limiting shaft 313 by bolts.

[0037] In this embodiment, after the limiting shaft 313 passes through the top ear piece 111 of the frame body 11, a pressure plate 3131 is connected to the end of the limiting shaft 313, so that the pressure plate 3131 can press the top ear piece 111 against the side of the fixing seat 312, thereby achieving the limitation of the frame body 11 along the axial direction of the limiting shaft 313, so that the frame body 11 is fixed more firmly, avoiding displacement during the reaming process and affecting the reaming accuracy.

[0038] Example 3 like Figure 2 , Figure 5 and Figure 6 As shown, the present embodiment is different from the embodiment 1 in that the limiting shaft 313 is provided with a weight-reducing hole 3132 , and the weight-reducing hole 3132 passes through both ends of the limiting shaft 313 along the axial direction of the limiting shaft 313 .

[0039] The operation of the limiting shaft 313 usually needs to be done manually. In this embodiment, by setting a weight-reducing hole 3132 on the limiting shaft 313, the weight of the limiting shaft 313 can be greatly reduced, making the installation and removal of the limiting shaft 313 more convenient.

[0040] Furthermore, a rotating rod 3133 is provided at one end of the limiting shaft 313 away from the installation slot 201 . The rotating rod 3133 provides a position for the operator to hold the hand. The operator can hold the rotating rod 3133 to perform operations such as pushing and rotating the limiting shaft 313 .

[0041] Example 4 like Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, in this embodiment, the difference from Embodiment 1 is that an anti-rotation mechanism 4 is provided at the bottom of the mounting groove 201, and the anti-rotation mechanism 4 includes a connecting seat 41, a limit block 42 is provided at the top of the connecting seat 41, and the limit block 42 is provided with a U-shaped groove 421, and the U-shaped groove 421 is equipped with an anti-rotation pin 43.

[0042] In this embodiment, the two bottom ear pieces 112 of the frame 11 of the special-shaped component 1 are placed on both sides of the limit block 42, and the anti-rotation pin 43 is passed through the first bottom ear piece 112, the limit block 42 and the second bottom ear piece 112 in sequence, thereby limiting the horizontal rotation of the bottom of the frame 11. The anti-rotation pin 43 is installed in a U-shaped groove 421. On the basis of achieving horizontal anti-rotation, the problem that the anti-rotation pin 43 cannot be connected to the bottom ear piece 112 due to the height error of the limit block 42 can be avoided to a certain extent, making it easier to connect the anti-rotation pin and the two bottom ear pieces.

[0043] Example 5 like Figure 1 , Figure 2, Figure 4 and Figure 5 As shown, in this embodiment, the difference from Embodiment 1 is that a height adjustment mechanism is provided on the top of the base 2 , and the height adjustment mechanism can be extended or shortened, and the height adjustment mechanism is used to support the tail beam 12 of the special-shaped component 1 .

[0044] When the distance between the height of the top surface of the base 2 and the axis of the limiting shaft 313 deviates from the theoretical value, after the limiting shaft 313 fixes the top ear 111 of the special-shaped component 1, the tail beam 12 may not fall on the top surface of the base 2, or the height of the tail beam 12 is lower than the height of the top surface of the base 2, and there is installation interference. In this embodiment, the distance from the axis of the mounting hole 3121 to the top surface of the base 2 is designed to be larger than the theoretical value. After the top ear 111 of the special-shaped component 1 is fixed, the tail beam 12 will be located above the top surface of the base 2, and the bottom surface of the tail beam 12 is supported by the height adjustment mechanism to avoid the above problem.

[0045] Height adjustment mechanism: includes a plurality of height adjustment units 6, which are arranged on the top surface of the base 2 along the shape of the tail beam 12. The height adjustment unit 6 includes a screw rod 61, which is threadedly connected to the top surface of the base 2. A turntable 62 is arranged around the side of the screw rod 61 to facilitate the rotation of the screw rod 61. A clamping nut 63 is sleeved on the screw rod 61, and the clamping nut 63 abuts against the top surface of the base 2 to prevent the screw rod 61 from loosening.

[0046] Example 6 like Figure 2 and Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the number of the mounting grooves 201 is two, and the two mounting grooves 201 are symmetrically arranged on both sides of the base 2 .

[0047] In this embodiment, when it is necessary to connect two symmetrical special-shaped components 1 together through other workpieces 5, it is necessary to cooperate with the left special-shaped component 12 and the other workpiece 5 to drill holes, and it is also necessary to cooperate with the right special-shaped component 12 and the other workpiece 5 to drill holes. Therefore, in this scheme, two installation grooves 201 are symmetrically arranged on the base 2, and each installation groove 201 is equipped with a cantilever mechanism 3, so that the tail beams 12 of the two symmetrical special-shaped components 1 can cooperate with the other shared workpieces 5 to drill holes at the same time, thereby reducing the number of clamping times and avoiding drilling errors caused by repeated clamping.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reaming fixture, characterized in that: The invention comprises a base (2), the base (2) being provided with at least one mounting groove (201), the base (2) being provided with a cantilever mechanism (3) corresponding to the mounting groove (201), the cantilever mechanism (3) comprising two limit units (31), the two limit units (31) being respectively provided on two sides of the mounting groove (201), the limit units (31) comprising a support frame (311), the support frame (311) being provided with a fixing seat (312), the fixing seat (312) being provided with a mounting hole, the mounting hole being detachably provided with a limit shaft (313).

2. A reaming fixture according to claim 1, characterized in that: The base (2) comprises a pedestal (21) and a support platform (22), and a support assembly (23) is provided between the pedestal (21) and the support platform (22).

3. A reaming fixture according to claim 2, characterized in that: The support assembly (23) comprises a plurality of upright posts (231), the plurality of upright posts (231) being arranged around the edge of the base (21), and a crossbar (232), the top of each upright post (231) being connected to the crossbar (232), and the support platform (22) being arranged on the crossbar (232).

4. A reaming fixture according to claim 3, characterized in that: An oblique support rod (233) is connected between two adjacent upright columns (231).

5. A reaming fixture according to claim 1, characterized in that: The limiting shaft (313) is provided with a weight-reducing hole (3132), and the weight-reducing hole (3132) penetrates through two ends of the limiting shaft (313) along the axial direction of the limiting shaft (313).

6. A reaming fixture according to claim 5, characterized in that: A rotating rod (3133) is provided at one end of the limiting shaft (313) away from the mounting groove (201).

7. A reaming fixture according to any one of claims 1 to 6, characterized in that: In the same cantilever mechanism (3), one of the limiting units (31) is provided with a pressure plate (3131), and the pressure plate (3131) is detachably connected to one end of the limiting shaft (313) via bolts.

8. A reaming fixture according to any one of claims 1 to 6, characterized in that: An anti-rotation mechanism (4) is provided at the bottom of the installation groove (201), the anti-rotation mechanism (4) comprises a connecting seat (41), a limit block (42) is provided at the top of the connecting seat (41), the limit block (42) is provided with a U-shaped groove (421), and the U-shaped groove (421) is equipped with an anti-rotation pin (43).

9. A reaming fixture according to any one of claims 1 to 6, characterized in that: A height adjustment mechanism is provided on the top of the base (2), the height adjustment mechanism being capable of being extended or shortened, and the height adjustment mechanism being used to support the tail beam (12) of the special-shaped component (1).

10. A reaming fixture according to any one of claims 1 to 6, characterized in that: The number of the mounting grooves (201) is two, and the two mounting grooves (201) are symmetrically arranged on both sides of the base (2).

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