An internal grinding machine for oil drilling tool processing

Abstract

This utility model relates to the field of internal grinding machine technology, specifically to an internal grinding machine for oil drilling tool processing. It includes a grinding machine body, with a protective assembly surrounding the internal grinding head and clamping parts. The protective assembly includes support plates symmetrically arranged on both sides of the grinding machine body. A guide block is provided at the upper end of the support plate, and an L-shaped plate is slidably fitted onto the guide block. The two L-shaped plates can be joined to form a protective shell that completely covers the area surrounding the internal grinding head and clamping parts. Magnetic suction components are provided on the inner sidewalls of the L-shaped plates. The two L-shaped plates are joined to form a complete closed protective shell, completely covering the processing area of ​​the internal grinding head and clamping parts. The magnetic suction components on the inner side of the L-shaped plates face the processing center, using magnetism to attract iron filings generated during processing, preventing iron filings from splashing with the coolant. The sliding design of the double L-shaped plates maximizes the operating space during opening and closing, eliminating the need for repeated adjustments to the workpiece position and reducing operational difficulty. The magnetic suction components actively attract iron filings, reducing subsequent cleaning workload.

Description

Technical Field

[0001] This utility model relates to the field of internal grinding machine technology, specifically to an internal grinding machine for oil drilling tool processing. Background Technology

[0002] Internal grinding machines are instruments used in the cutting process and equipment industry. These machines are mainly used to grind the inner surface and end face of cylindrical, conical, or other shaped generatrices. The internal cylindrical surface of oil drilling tools such as drill pipes and drill collars requires the use of special internal grinding machines. During the processing, a large amount of iron filings are generated, accompanied by coolant splashing. Therefore, protective mechanisms must be provided to ensure operational safety and improve the working environment.

[0003] Most existing internal grinding machine protective mechanisms adopt a single-sided manual push-pull or single-leaf hinge structure. When the single-leaf opening structure is opened, it can only provide operating space on one side. When clamping long-sized drills or large-sized workpieces, it is easy to interfere with the protective cover, requiring repeated adjustments to the workpiece position, which increases the difficulty of operation. Furthermore, it cannot actively collect metal chips, and the splashed metal chips will still scatter into the surrounding environment, resulting in a large amount of subsequent cleaning work. The disorderly scattering of metal chips can also cause safety hazards. Therefore, it is necessary to make improvements. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an internal grinding machine for oil drilling tool processing to solve the above problems.

[0005] The purpose of this utility model is achieved as follows: An internal grinding machine for oil drilling tool processing includes a grinding machine body. A protective assembly is provided around the internal grinding head and clamping parts of the grinding machine body. The protective assembly includes support plates symmetrically arranged on both sides of the grinding machine body. A guide block is provided at the upper end of the support plate. An L-shaped plate is slidably sleeved on the guide block. The two L-shaped plates can be spliced ​​to form a protective shell to completely cover the area around the internal grinding head and clamping parts. A magnetic suction element is provided on the inner side wall of the L-shaped plate.

[0006] Preferably, one of the L-shaped plates has a connecting pin on its opposite sidewall, and the other L-shaped plate has a socket on its opposite sidewall that matches the connecting pin.

[0007] Preferably, there are two connecting pins and two sockets, and they are used in combination.

[0008] Preferably, the magnetic suction component includes a magnetic strip arranged horizontally parallel to the inner sidewall of the L-shaped plate. The magnetic strip is bonded to the L-shaped plate by a waterproof adhesive layer, and the magnetic suction surface of the magnetic strip faces the inner grinding head.

[0009] Preferably, a support beam is inclinedly arranged between the lower end face of the support plate and the side face of the grinding machine body.

[0010] This utility model has the following beneficial effects: This internal grinding machine for oil drilling tools features L-shaped plates on both sides that can slide relative to each other along the guide block's track. When they slide into a closed state, the two L-shaped plates join together to form a complete enclosed protective shell, completely covering the processing area of ​​the internal grinding head and clamping parts. The magnetic suction components on the inner side of the L-shaped plates face the processing center, using magnetism to attract iron filings generated during processing, preventing iron filings from splashing with the coolant. The double L-shaped plate sliding design maximizes the operating space when opening and closing, ensuring no interference when clamping long-sized drilling tools or large-sized workpieces, eliminating the need for repeated adjustments to the workpiece position, reducing operational difficulty. The magnetic suction components actively attract iron filings, replacing the passive blocking mode, reducing disorderly scattering of iron filings and lowering the workload of subsequent cleaning.

[0011] 2. One L-shaped plate has a connecting pin on its opposite sidewall, and the other L-shaped plate has a matching insertion hole on its opposite sidewall. When the two L-shaped plates slide and join together along the guide block, the connecting pin will precisely insert into the corresponding insertion hole. Through mechanical engagement, the two L-shaped plates are positioned and locked, ensuring a stable overall protective shell after joining. This prevents the L-shaped plates from misaligning or separating due to grinding machine vibration during processing, ensuring the sealing of the protective shell and preventing coolant or iron filings from leaking out from the joint. There are two connecting pins and two insertion holes, and they are used in pairs. During joining, the two connecting pins are simultaneously inserted into the two corresponding insertion holes, forming a two-point positioning and locking structure. Compared with single-point positioning, the force is more evenly distributed and the positioning accuracy is higher, further improving the protective shell's ability to block splashes and iron filings. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the front view of the present invention; Figure 3 This is a schematic diagram of the fit between the slot and the bearing seat of this utility model; The labels in the attached diagram are: 1. Grinding machine body; 2. Protective components; 21. Support plate; 22. Guide block; 23. L-shaped plate; 3. Magnetic strip; 4. Connecting pin; 5. Insertion hole; 6. Support beam; 7. Internal grinding head; 8. Clamping parts. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0015] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0016] Example 1: An internal grinding machine for oil drilling tool processing includes a grinding machine body 1. A protective assembly 2 is provided around the internal grinding head 7 and the clamping component 8 of the grinding machine body 1. The protective assembly 2 includes support plates 21 symmetrically arranged on both sides of the grinding machine body 1. A guide block 22 is provided at the upper end of the support plate 21. An L-shaped plate 23 is slidably fitted on the guide block 22. The L-shaped plate 23 has a thickness of 10-15mm and is made of Q235 steel plate. Two L-shaped plates 23 can be spliced ​​to form a protective shell that completely covers the area around the internal grinding head 7 and the clamping component 8. Magnetic elements are provided on the inner sidewalls of the L-shaped plates 23. The L-shaped plates 23 on both sides can move along the guide block 21. The tracks of 2 slide relative to each other. When they slide to a close position, the two L-shaped plates 23 are spliced ​​together to form a complete closed protective shell, which completely covers the processing area of ​​the inner grinding head 7 and the clamping part 8. The magnetic suction part on the inner side of the L-shaped plate 23 faces the processing center and uses magnetism to attract iron chips generated during processing, preventing iron chips from splashing with the coolant. The sliding design of the double L-shaped plates 23 maximizes the operating space when opening and closing. There is no interference when clamping long-sized drills or large-sized workpieces. There is no need to repeatedly adjust the workpiece position, reducing the difficulty of operation. The magnetic suction part actively attracts iron chips, replacing the passive blocking mode, reducing the disorderly scattering of iron chips and reducing the amount of subsequent cleaning work.

[0017] It should be noted that when using this grinding machine, one end of the oil drilling tool, such as the drill rod or drill collar, is placed into the clamping device 8 (such as a three-jaw chuck). The jaws are adjusted to fit the outer diameter of the drill tool. The clamping mechanism (pneumatic or hydraulic) and the axial positioning block simultaneously press against the end face of the drill tool to complete the positioning and fixation. The grinding head motor is started, and the grinding wheel rotates at high speed. The feed mechanism controls the grinding head to first feed radially in a small amount to contact the inner surface of the drill tool, and then move axially at a uniform speed to complete a single grinding stroke. At the same time, the coolant is turned on to flush the grinding area to cool down and remove chips. The above is an existing technology for workpiece clamping and grinding, which will not be elaborated on here.

[0018] In this embodiment, one of the L-shaped plates 23 has a connecting pin 4 on its opposite sidewall, and the other L-shaped plate 23 has an insertion hole 5 that matches the connecting pin 4 on its opposite sidewall. The diameter of the insertion hole 5 is 0.02-0.05mm larger than that of the connecting pin 4. When the two L-shaped plates 23 slide and splice along the guide block 22, the connecting pin 4 will be precisely inserted into the corresponding insertion hole 5. The two L-shaped plates 23 are positioned and locked through mechanical interlocking, ensuring that a stable overall protective shell is formed after splicing. This avoids the L-shaped plates 23 from being misaligned or separated due to the vibration of the grinding machine during processing, ensuring the sealing of the protective shell and preventing coolant or iron filings from overflowing from the splicing gap.

[0019] In this embodiment, there are two connecting pins 4 and two insertion holes 5, which are used in combination. When splicing, the two connecting pins 4 are inserted into the corresponding two insertion holes 5 at the same time to form a two-point positioning and locking structure. Compared with single-point positioning, the force is more uniform and the positioning accuracy is higher, which further improves the blocking effect of the protective shell on splashes and iron filings.

[0020] In this embodiment, the magnetic suction component includes magnetic strips 3 arranged horizontally parallel to the inner wall of the L-shaped plate 23. The magnetic strips 3 are bonded to the L-shaped plate 23 by a waterproof adhesive layer. The magnetic surface of the magnetic strips 3 faces the inner grinding head 7. The magnetic strips 3 are made of neodymium iron boron permanent magnets with a magnetic field strength ≥1200Gs on the surface of the magnetic surface. Three strips are arranged horizontally in parallel with a spacing of 200-300mm. The waterproof adhesive layer is made of oil- and water-resistant silicone adhesive with a bonding thickness of 1-2mm. After pretreatment, the adhesion of the bonding surface is ≥1.5MPa. The magnetic strips 3 are inherently magnetic, and their magnetic surfaces face the processing area. After iron filings are generated, they are attracted to the surface of the magnetic strips 3 under the attraction of the magnetic field, achieving centralized collection. The horizontally parallel arrangement of the magnetic strips 3 expands the iron filings adsorption area. Compared with scattered magnetic points, it can capture splashed iron filings more comprehensively. The waterproof adhesive layer is compatible with the coolant in the processing environment, preventing the magnetic strips 3 from falling off due to moisture or corrosion, and ensuring the continuity of the iron filings collection function.

[0021] In this embodiment, a support beam 6 is inclinedly arranged between the lower end face of the support plate 21 and the side of the grinding machine body 1. Utilizing the geometric stability of the triangular structure, the support beam 6 distributes and transfers the vertical and horizontal loads on the support plate 21 to the grinding machine body 1, avoiding excessive stress on a single point of the support plate 21 and extending the overall service life of the protective component 2.

[0022] The working principle of this utility model is as follows: The internal grinding machine for oil drilling tool processing has two L-shaped plates 23 that can slide relative to each other along the track of the guide block 22. When they slide to the contact state, the two L-shaped plates 23 are spliced ​​together to form a complete closed protective shell, which completely covers the processing area of ​​the internal grinding head 7 and the clamping part 8. The magnetic suction part on the inner side of the L-shaped plate 23 faces the processing center and uses magnetism to adsorb the iron chips generated during the processing, preventing the iron chips from splashing with the coolant. The sliding design of the double L-shaped plates 23 maximizes the operating space when opening and closing. There is no interference when clamping long-sized drilling tools or large-sized workpieces, and there is no need to repeatedly adjust the workpiece position, reducing the difficulty of operation. The magnetic suction part actively adsorbs iron chips, replacing the passive blocking mode, reducing the disorderly scattering of iron chips, and reducing the amount of subsequent cleaning work.

[0023] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be divided into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An internal grinding machine for oil drilling tool processing, comprising a grinding machine body (1), characterized in that: The grinding machine body (1) is provided with a protective component (2) around the inner grinding head (7) and the clamping member (8). The protective component (2) includes a support plate (21) symmetrically arranged on both sides of the grinding machine body (1). The upper end of the support plate (21) is provided with a guide block (22). An L-shaped plate (23) is slidably sleeved on the guide block (22). The two L-shaped plates (23) can be spliced ​​together to form a protective shell to completely cover the area around the inner grinding head (7) and the clamping member (8). The inner side wall of the L-shaped plate (23) is provided with a magnetic suction element.

2. The internal grinding machine for oil drilling tool processing according to claim 1, characterized in that: One of the L-shaped plates (23) has a connecting pin (4) on its opposite sidewall, and the other L-shaped plate (23) has a socket (5) that matches the connecting pin (4) on its opposite sidewall.

3. The internal grinding machine for oil drilling tool processing according to claim 2, characterized in that: The number of connecting pins (4) and sockets (5) are both two, and they are used in combination.

4. The internal grinding machine for oil drilling tool processing according to claim 1, characterized in that: The magnetic attractor includes a magnetic strip (3) that is arranged parallel to the inner sidewall of the L-shaped plate (23) in the horizontal direction. The magnetic strip (3) is bonded to the L-shaped plate (23) by a waterproof adhesive layer, and the magnetic surface of the magnetic strip (3) faces the inner grinding head (7).

5. The internal grinding machine for oil drilling tool processing according to claim 1, characterized in that: A support beam (6) is inclinedly arranged between the lower end face of the support plate (21) and the side face of the grinding machine body (1).

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