Screw machining clamp

Abstract

The screw machining clamp comprises a base and a fixing plate, a plurality of limiting holes which are in transition fit with the outer diameter tolerance fit relation of screws are formed in the base in a rectangular array distribution mode, and a plurality of machining fixing holes which are matched with the limiting holes in number are formed in the fixing plate in a rectangular array distribution mode. The fixing plate is detachably connected with the base, when the base is covered with the fixing plate, any machining fixing hole and the corresponding limiting hole are concentrically formed, the hole diameter of the machining fixing hole is smaller than the diameter of the head of a screw, and the screw machining device has the effect of improving the screw production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of screw processing, in particular to a screw processing clamp. BACKGROUND

[0002] Precise screws, with their ultra-high manufacturing precision and excellent physical properties such as high strength and wear resistance, have become an indispensable component of many precision equipment. Its advantages are that it can provide stable and reliable connection, effectively resist vibration and looseness, and is widely used in the fields of electronic instruments, precision machinery, aerospace and medical equipment.

[0003] Precise screws (hereinafter referred to as screws) include a head and a threaded portion. After the screw processing equipment and machine tool cooperate to complete the preliminary processing of the screw, the head and threaded portion of the screw need to be finished using a machine tool. In the processing process, in order to facilitate clamping, the threaded portion is often processed first to ensure that the tolerance size of the threaded portion meets the design requirements, and then the head of the screw is processed using a jig to have a flat head, an inner / outer hexagonal shape, or other shapes (or shapes required by actual needs or design).

[0004] In actual processing, because the head and threaded portion of the screw need to be processed separately, the existing processing method is as follows: the threaded portion of the screw with threads after finishing is fixed on the processing jig one by one using threads. Because threads have the characteristics of not easy to loosen and easy to tighten, the screw fixed on the jig will not loosen when the machine tool processes the head of the screw, so as to facilitate the machine tool to smoothly complete the processing of the head of the screw.

[0005] However, because a single jig is provided with a plurality of threaded holes matched with the threads of the screw, when the processing of the head of the screw starts, the operator needs to use a wrench to tighten the bolt with the head to be processed on the jig one by one, and fix the jig on the workbench of the machine tool. Then start the machine tool to process the head of the screw on the jig one by one. After the head of the screw is processed, the operator needs to use the wrench to disassemble the processed screw on the jig along the jig one by one. The operation is complex, which is not conducive to improving the processing efficiency of the screw, and there is room for improvement. CONTENT OF THE INVENTION

[0006] In order to improve the production efficiency of the screw, the present application provides a screw processing clamp.

[0007] The screw processing clamp provided by the present application adopts the following technical scheme:

[0008] The utility model provides a screw processing fixture, including base and fixed plate, a plurality of limit holes are arranged on the base and are in transition fit with the outer diameter tolerance of screw, a plurality of processing fixed holes are arranged on the fixed plate and are matched with the number of limit hole, the fixed plate is detachably connected with the base, when the fixed plate covers the base, any processing fixed hole and the corresponding limit hole are arranged in the same center, and the hole diameter of processing fixed hole is smaller than the diameter of screw head.

[0009] By using the above technical scheme, the limit hole is in transition fit with the outer diameter tolerance of the screw, so that the screw can be smoothly taken out along the limit hole, or placed in the limit hole, which is beneficial to reduce the position deviation of the screw placed on the base, so that the head of any screw is in a relatively fixed state when the machine tool processes the head of the screw. When the head of the screw needs to be processed, the operator places the screw to be processed in the limit hole one by one, and then installs the fixed plate on the base. When the fixed plate covers the base, the processing fixed hole and the limit hole are arranged in the same center, which is beneficial to reduce the position deviation of the fixed plate along the base, reduce the probability of the machine tool failing to accurately process the head of the screw or damaging the processing tool due to the position deviation between the fixed plate and the base when the fixed plate covers the base, and positively guide the improvement of the production efficiency of the screw.

[0010] Preferably, the limit hole is tapered from the side abutting the fixed plate to the side away from the fixed plate.

[0011] By using the above technical scheme, the limit hole is tapered, which provides a guide for the screw when it is placed in the limit hole, so that the head of the bolt can be relatively accurately placed in the limit hole. When the fixed plate covers the base, the head of the bolt is between the limit hole and the fixed plate, which is beneficial to reduce (or avoid) the swing of the screw along the limit hole when the machine tool processes the head of the screw, and improve the stability of the machine tool when processing the head of the screw.

[0012] Preferably, the processing fixed hole on the fixed plate is provided with a tapered abutting portion along the thickness direction of the fixed plate at one end abutting the base.

[0013] By using the above technical scheme, the tapered abutting portion on the fixed plate cooperates with the tapered limit hole to correct the position of the screw along the base during the process of covering the base with the bolt, and finally abuts the head of the screw between the base and the fixed plate, so as to process the head of the screw by the machine tool.

[0014] Preferably, the end of the fixing plate abutting against the base is provided with a silica gel pad.

[0015] By adopting the above technical scheme, the silica gel material has the characteristics of soft quality and easy deformation, which is beneficial to reduce the gap between the fixing plate and the base when the fixing plate is covered on the base, so that the fixing plate can abut against the screw located in the limiting hole, thereby improving the stability of the machine tool during machining.

[0016] Preferably, the fixing plate is made of aluminum alloy material.

[0017] By adopting the above technical scheme, the aluminum alloy material has the characteristics of light weight and easy processing, so as to facilitate the processing and forming of the fixing plate. With the increase of the use frequency of the fixing plate, irreversible mechanical wear of the fixing plate will occur. When the fixing plate is deformed or damaged, the fixing plate can be replaced.

[0018] Preferably, the base is provided with a plurality of machining areas, and each machining area is detachably provided with a fixing plate.

[0019] By adopting the above technical scheme, the base is divided into a plurality of machining areas, and each machining area is provided with a fixing plate, so as to facilitate batch processing of the screw.

[0020] Preferably, the base is provided with a plurality of machining areas, and each machining area is detachably provided with a fixing plate.

[0021] By adopting the above technical scheme, when the screw is machined, the carrier seat is first fixed on the workbench of the machine tool, and the carrier seat is corrected (in the position relationship along the workbench of the machine tool). Since the tolerance fit relationship between the base and the limiting groove is transition fit, the base is limited by the limiting groove, so that the installation position of the base installed on the carrier seat is in a relatively fixed state, thereby reducing the adjustment time when the base is installed on the carrier seat, and indirectly improving the efficiency of the bolt machining.

[0022] Preferably, the carrier seat is provided with a magnetic lock, and the magnetic lock is used to attract the base and the workbench of the machine tool.

[0023] By adopting the above technical scheme, the base and the workbench of the machine tool are attracted by the magnetic lock, without the need of using additional tools to fix the base with the bolt along the carrier seat, so as to facilitate the disassembly and assembly of the base, and the operation is simple.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. When the head of the screw needs to be processed, the operator places the screw to be processed in a plurality of limiting holes in turn, then installs the fixed plate on the base, so that the screw to be processed is fastened between the fixed plate and the base, and when the fixed plate is covered on the base, the processing fixed hole and the limiting hole are arranged with the same center of circle, which is beneficial to reduce the position deviation of the fixed plate along the base, and reduce the position deviation between the fixed plate and the base when the fixed plate is covered on the base, so that the machine tool cannot accurately process the head of the screw. Compared with the screw fixing screw method, the screw disassembly is more convenient, which plays a positive guiding role in improving the production efficiency of the screw;

[0026] 2. Because the fixed plate is provided with a tapered abutting portion, the tapered abutting portion cooperates with the tapered limiting hole to correct the position of the screw along the base during the process of covering the fixed plate on the base placed with the screw, and finally abuts the head of the screw between the base and the fixed plate, so that the machine tool processes the head of the screw;

[0027] 3. The magnetic lock is attracted to the base and the workbench of the machine tool, so that the base placed with the screw is fixed along the bearing seat without using additional tools, which is convenient for disassembling the base and simple to operate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of a screw processing clamp in embodiment 1 of the application.

[0029] Figure 2 It is Figure 1 an exploded schematic diagram of a screw processing clamp in embodiment 1 along the axis direction.

[0030] Figure 3 It is Figure 1 a schematic diagram of the structure of the fixed plate of a screw processing clamp in embodiment 1.

[0031] Figure 4 It is a schematic diagram of the overall structure of a screw processing clamp in embodiment 2 and embodiment 3 of the application.

[0032] Figure 5 It is Figure 4 an exploded schematic diagram of a screw processing clamp in embodiment 2 along the axis direction.

[0033] BRIEF DESCRIPTION OF DRAWINGS: 1, base; 11, limiting hole; 12, processing area; 2, fixed plate; 21, processing fixed hole; 22, tapered abutting portion; 23, threaded fixing hole; 3, silica gel pad; 4, bearing seat; 41, limiting groove; 42, magnetic lock. DETAILED DESCRIPTION

[0034] The following will be combined with the Figures 1-5 The application is further described in detail.

[0035] Embodiment 1

[0036] The embodiment of the present application discloses a screw machining clamp. Figures 1-3 The screw machining clamp comprises a base 1 and a fixed plate 2, a plurality of limiting holes 11 with a transition fit relationship with the outer diameter tolerance of the screw are arranged in a rectangular array on the base 1 (the limiting holes 11 are not provided with threads), a plurality of machining fixing holes 21 matched with the number of the limiting holes 11 are arranged in a rectangular array on the fixed plate 2, the fixed plate 2 is detachably connected with the base 1, when the fixed plate 2 is covered on the base 1, any machining fixing hole 21 and the corresponding limiting hole 11 are concentrically arranged, and the diameter of the machining fixing hole 21 is smaller than the diameter of the head of the screw, the diameter of the machining fixing hole 21 is slightly smaller than the diameter of the head of the screw, so that the clamping force can be ensured, and the problem that the screw rotates in the machining process is effectively solved.

[0037] First of all, it should be pointed out that the "transition fit" means that the outer diameter of the screw is smaller than the diameter of the limiting hole 11, which is a description of the tolerance fit relationship in the mechanical field.

[0038] In addition, the number of the limiting holes 11 can be increased or decreased according to actual production needs and the size of the base 1, and is used for placing screws to be machined, and the specific number is not described here because the number is large but the function is the same.

[0039] Specifically, the limiting hole 11 has a transition fit relationship with the outer diameter tolerance of the screw, so that the screw can be smoothly taken out along the limiting hole 11, or the screw is placed in the limiting hole 11, which is also beneficial to reduce the position deviation of the screw placed on the base 1, so that the head of any screw is in a relatively fixed state when the machine tool processes the head of the screw.

[0040] Therefore, when the head of the screw needs to be machined, the operator places the screw to be machined in the plurality of limiting holes 11 in sequence, and then installs the fixed plate 2 on the base 1, when the fixed plate 2 is covered on the base 1, the machining fixing hole 21 and the limiting hole 11 are concentrically arranged, which is beneficial to reduce the position deviation of the fixed plate 2 along the base 1, reduce the probability that the machine tool cannot accurately machine the head of the screw or damage the machining tool due to the position deviation between the fixed plate 2 and the base 1 when the fixed plate 2 is covered on the base 1, and positively guide the improvement of the production efficiency of the screw.

[0041] Among them, "any machining fixing hole 21 and the corresponding limiting hole 11" means that any limiting hole 11 has only one machining fixing hole 21 corresponding thereto.

[0042] Further, the limiting hole 11 is tapered from the side abutting against the fixing plate 2 to the side away from the fixing plate 2 (can be processed by a milling machine or machining center). Since the limiting hole 11 is tapered, when the screw is placed in the limiting hole 11, the tapered limiting hole 11 provides a guiding effect for the screw, so that the head of the bolt can be relatively accurately placed in the limiting hole 11. When the fixing plate 2 is covered on the base 1, the head of the bolt is between the limiting hole 11 and the fixing plate 2, which is beneficial to reduce (or avoid) the deviation of the screw along the limiting hole 11 when the machine tool processes the head of the screw, and improve the stability of the machine tool when processing the head of the screw.

[0043] Correspondingly, the machining fixing hole 21 on the fixing plate 2 is provided with a tapered abutting portion 22 along the thickness direction of the fixing plate 2 at the end abutting against the base 1, and the tapered abutting portion 22 is arranged on any one of the machining fixing holes 21. Since the fixing plate 2 is provided with the tapered abutting portion 22, it cooperates with the tapered limiting hole 11 to better accommodate the head of the screw. When the fixing plate 2 is covered on the base 1 where the bolt is placed, the tapered abutting portion 22 corrects the position of the screw along the base 1, and finally abuts the head of the screw between the base 1 and the fixing plate 2, so as to facilitate the machine tool to process the head of the screw.

[0044] In addition, the end of the fixing plate 2 abutting against the base 1 is provided with a silica gel pad 3. The silica gel material has the characteristics of soft quality and easy deformation, which is beneficial to reduce the gap between the fixing plate 2 and the base 1 when the fixing plate 2 is covered on the base 1, and also beneficial to increase the buffering capacity, thereby reducing the vibration of the base 1 and / or the fixing plate 2 when the machine tool processes the bolt, so that the fixing plate 2 can abut against the screw in the limiting hole 11, and improve the stability of the machine tool during processing.

[0045] Correspondingly, the fixing plate 2 is made of aluminum alloy material, which has the characteristics of light quality and easy processing, so as to facilitate the processing of the fixing plate 2. As the number of uses of the fixing plate 2 increases, the fixing plate 2 will have irreversible mechanical wear. When the fixing plate 2 deforms or is damaged, the fixing plate 2 can be replaced.

[0046] In this embodiment, the fixing plate 2 is uniformly provided with a plurality of threaded fixing holes 23 along the length direction (the number can be increased or decreased according to the length of the fixing plate 2, and the specific number is not limited here). The plurality of threaded fixing holes 23 are threaded through the fixing plate 2 along the thickness direction of the fixing plate 2 and extend to the base 1. The fixing plate 2 can be stably fixed to the base 1 by the bolt, which is simple to operate.

[0047] It should be noted that, since the threaded fixing hole 23 is penetrated through the thickness direction of the fixing plate 2 and extends to the base 1, in order to avoid the misalignment of the thread engagement of the threaded fixing hole 23 on the fixing plate 2 and the threaded fixing hole 23 on the base 1, during the processing of the threaded fixing hole 23, the fixing plate 2 and the base 1 need to be punched simultaneously and the fixing plate 2 and the base 1 need to be tapped using a tool, so as to form the threaded fixing hole 23, so that the end of the threaded hole on the fixing plate 2 can be engaged with the end of the threaded fixing hole 23 on the base 1, so as to ensure the locking force of the screw head during the fixing of the fixing plate 2 and the base 1.

[0048] The implementation principle of embodiment 1 is that the tolerance fit relationship between the limiting hole 11 and the screw outer diameter is a transition fit, so that the screw can be smoothly taken out along the limiting hole 11, or the screw is placed in the limiting hole 11, which is also beneficial to reduce the position deviation of the screw placed on the base 1, so that the head of any screw is in a relatively fixed state during the machining of the screw head by the machine tool; when the head of the screw needs to be machined, the operator places the screw to be machined in the limiting hole 11, and then installs the fixing plate 2 on the base 1, and when the fixing plate 2 is closed on the base 1, the processing fixing hole 21 and the limiting hole 11 are arranged with the same center, which is beneficial to reduce the position deviation of the fixing plate 2 along the base 1, reduce the probability of the case that the machine tool cannot accurately machine the head of the screw or the machining tool is damaged due to the position deviation between the fixing plate 2 and the base 1 when the fixing plate 2 is closed on the base 1, and positively guide the improvement of the production efficiency of the screw.

[0049] Embodiment 2

[0050] The difference from embodiment 1 is that, referring to Figure 4 and Figure 5 , the base 1 is provided with a plurality of processing areas 12, and each processing area 12 is detachably provided with a fixing plate 2.

[0051] Compared with the way of arranging a plurality of limiting holes 11 with a transition fit tolerance relationship with the outer diameter of the screw in a rectangular array on the base 1 in embodiment 1, in this embodiment, the base 1 is divided into four processing areas 12 (the specific number and size of the processing areas 12 can be increased according to design requirements and the size of the base 1), and then a plurality of limiting holes 11 are evenly divided into the four processing areas 12, and the fixing plate 2 is fixed on the corresponding processing area 12 by using a bolt through a threaded fixing hole 23 on each processing area 12.

[0052] Therefore, the implementation principle of embodiment 2 is that: through the above scheme, the operator can sequentially put the screws to be processed into the limiting holes 11 on the corresponding processing areas 12, and then fix the fixed plate 2 on the base 1 by using the bolts, and repeat the above process to realize the requirement of fixing the screws to be processed on the four processing areas 12 respectively, so as to realize the purpose of processing the screws placed in the limiting holes 11 in batches.

[0053] Embodiment 3

[0054] The difference between embodiment 3 and embodiments 2 and 1 is that: Figure 4 and Figure 5 Further comprising a bearing seat 4, the bearing seat 4 is used to be fixed on the workbench of the machine tool, the bearing seat 4 is provided with a limiting groove 41 away from the end abutting against the machine tool, the profile of the limiting groove 41 is matched with the profile of the base 1, and the tolerance fit relationship between the limiting groove 41 and the base 1 is transition fit.

[0055] Meanwhile, the bearing seat 4 is provided with a magnetic lock 42, the magnetic lock 42 is used to attract the base 1 and the workbench of the machine tool.

[0056] The magnetic lock 42 mainly comprises a lock body, an electromagnet, a suction plate, a controller and the like. When the magnetic lock 42 is powered, only a small current is needed to realize the magnetic attraction between the base 1 and the workbench of the machine tool through the magnetic lock 42 by using the electromagnetic principle, without the need of using additional tools to fix the base 1 provided with the screws along the bearing seat 4, so as to facilitate the disassembly and assembly of the base 1, and the operation is simple and convenient.

[0057] The implementation principle of embodiment 3 is that: when the screws are processed, the bearing seat 4 is first fixed on the workbench of the machine tool, and the bearing seat 4 is corrected (the positional relationship along the workbench of the machine tool), because the tolerance fit relationship between the base 1 and the limiting groove 41 is transition fit, the base 1 is limited by the limiting groove 41, so that the installation position of the base 1 installed on the bearing seat 4 is in a relatively fixed state, the adjustment time when the base 1 is installed on the bearing seat 4 is reduced, and the efficiency of screw processing is indirectly improved.

[0058] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A screw machining jig characterised in that: It includes base (1) and fixed plate (2), the base (1) is opened with several limit holes (11) with screw outer diameter tolerance matching relationship as transition fit in rectangular array distribution, the fixed plate (2) is opened with several processing fixed holes (21) that are adapted to the number of limit hole (11) in rectangular array distribution, the fixed plate (2) and the base (1) are detachably connected, when the fixed plate (2) covers the base (1), any one processing fixed hole (21) and the limit hole (11) corresponding thereto are arranged with the same center, and the aperture of the processing fixed hole (21) is less than the diameter of the head of screw.

2. A screw machining jig according to claim 1, wherein: The limit hole (11) is conically arranged from the side abutting against the fixed plate (2) to the side away from the fixed plate (2).

3. A screw machining jig according to claim 1, wherein: The processing fixed hole (21) on the fixed plate (2) is provided with a tapered abutting portion (22) along the thickness direction of the fixed plate (2) at the end abutting against the base (1).

4. The screw machining clamp of claim 1, wherein: The end of the fixed plate (2) abutting against the base (1) is provided with a silica gel pad (3).

5. The screw machining clamp of claim 1, wherein: The fixed plate (2) is made of aluminum alloy material.

6. A screw machining jig according to claim 1, wherein: The base (1) is provided with several processing areas (12), and any one processing area (12) is detachably provided with a fixed plate (2).

7. The screw machining clamp of claim 1, wherein: It also includes a bearing seat (4), the bearing seat (4) is used for fixing on the workbench of machine tool, the bearing seat (4) is provided with a limit groove (41) away from the end abutting against the machine tool, the profile of the limit groove (41) is adapted to the profile of the base (1), and the tolerance matching relationship between the limit groove (41) and the base (1) is transition fit.

8. A screw machining jig according to claim 7, wherein: The bearing seat (4) is provided with a magnetic lock (42), and the magnetic lock (42) is used for attracting the base (1) and the workbench of machine tool.

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