Auxiliary measuring tool for external thread workpiece

Abstract

The invention discloses an auxiliary measuring tool for an external thread workpiece, and the tool comprises a pedestal, one side of the pedestal is provided with an avoiding groove which cooperates with the installation and fixation of a thread measuring instrument, and the pedestal is horizontally provided with a guide rail; the fixed base is fixedly connected to the top face of one end of the base, and a first clamping top head is fixed to the top of one side of the fixed base; the movable base is connected to the guide rail in a sliding mode, a second clamping ejection head is installed on the top of the side, close to the fixed base, of the movable base, and the first clamping ejection head and the second clamping ejection head are coaxially arranged and matched to clamp a to-be-detected threaded workpiece; the external thread parameter measuring device is simple in structure, is used in cooperation with a thread measuring instrument, rapidly and efficiently achieves measurement of external thread parameters, and reduces limitation of a measuring table of the thread measuring instrument on a thread workpiece.

Description

Technical Field

[0001] The invention belongs to the technical field of geometric measurement equipment, and in particular relates to an auxiliary measuring tool for an external threaded workpiece. Background Art

[0002] Thread is a special structure used for connection and transmission. It is easy to assemble and can decompose complex mechanical parts into several relatively simple geometric components, thus greatly improving the processability and quality of mechanical equipment manufacturing. Thread is also detachable, so that people can easily repair equipment and replace parts. Therefore, thread is widely used in the field of mechanical manufacturing. Thread connection is one of the most commonly used, simplest and most effective connection forms in mechanical connection.

[0003] To ensure the reliability of threaded connections and the sealing and anti-loosening properties of threaded parts, it is necessary to measure their geometric parameters, which are directly related to the connection, assembly and maintenance effects of threaded parts. The geometric parameters of threads include major diameter, minor diameter, middle diameter, pitch, tooth angle, etc. Among them, the middle diameter, pitch and tooth angle are generally referred to as the three elements of threads in the industry.

[0004] There are many methods for measuring external thread parameters, including three-needle method, projection method, thread micrometer method, special equipment or special instrument method, etc. Among them, the thread comprehensive measuring instrument dedicated to the full parameter detection of thread is the most powerful method. However, since the thread measuring instrument is a laboratory measuring equipment, its measuring table is relatively small, which makes it impossible to clamp and measure some special-shaped threaded parts.

[0005] Therefore, how to provide an auxiliary measuring tool for externally threaded parts that can realize the clamping of externally threaded parts on a thread measuring instrument is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] In view of this, the present invention provides an auxiliary measuring tool for external threaded workpieces, which is used in conjunction with a thread measuring instrument to quickly and efficiently measure external thread parameters.

[0007] In order to achieve the above object, the present invention adopts the following technical solution: an auxiliary measuring tool for external threaded parts, comprising:

[0008] A base, one side of the base is provided with a avoidance groove for mounting and fixing the thread measuring instrument, and a guide rail is horizontally provided on the base;

[0009] A fixed base, the fixed base is fixedly connected to the top surface of one end of the base, and a first clamping head is fixed to the top of one side of the fixed base;

[0010] A movable base is slidably connected to the guide rail, a second clamping head is installed on the top of one side of the movable base close to the fixed base, the first clamping head and the second clamping head are coaxially arranged and cooperate to clamp the threaded workpiece to be tested, and a locking mechanism is installed on the movable base to limit the sliding of the movable base on the guide rail.

[0011] The beneficial effects of the present invention are: the entire tooling is fixed to the thread measuring instrument by utilizing the base, and an additional clamping platform is provided, which can reduce the clamping restrictions of the smaller measuring table of the original thread measuring instrument on special-shaped threaded parts, and the position of the second clamping head is adjustable by utilizing the movable base, and in combination with the fixed first clamping head, threaded parts of different sizes can be clamped and fixed, and the locking mechanism is used to adjust the position of the movable base on the base, which is convenient for adjustment and control, thereby improving the versatility of the thread measuring instrument and quickly realizing parameter measurement of external threaded parts.

[0012] Preferably, the fixed base is a rectangular base, and the fixed base is connected to one end of the base through a plurality of bolts.

[0013] The technical effect produced thereby is that the first clamping head is fixed by utilizing the fixed base, and the fixed base is convenient to assemble and disassemble and flexible to use.

[0014] Preferably, the base is an L-shaped structural plate, and an L-shaped recessed groove is provided on one side of the base close to the long side for facilitating the installation of a thread measuring instrument, and the guide rail is arranged on the other side of the base corresponding to the long side.

[0015] The resulting technical effect is that the L-shaped recessed groove on the base can ensure that after the measuring tool is placed on the thread measuring instrument platform, the measuring head of the measuring instrument can move forward and backward smoothly.

[0016] Preferably, the first clamping head and the second clamping head are both conical heads, and both ends of the threaded workpiece to be tested have embedded holes, and the first clamping head and the second clamping head are inserted and connected with the embedded holes at the corresponding ends; the coaxiality error between the first clamping head and the second clamping head is less than 0.005mm.

[0017] The resulting technical effect is that the coaxiality error between the first clamping plug and the second clamping plug is less than 0.005 mm to ensure the linear characteristics of the threaded workpiece to be measured after being installed on the measuring device, thereby improving the measurement accuracy of the thread parameters.

[0018] Preferably, a sliding block cooperating with the guide rail is provided on the movable base, and the sliding block is a convex block.

[0019] The resulting technical effect is that the movable base will not fall off the guide rail due to the cooperation between the slider and the guide rail.

[0020] Preferably, the locking mechanism includes a movable handle and a tensioning screw, a side wall of the movable base is horizontally provided with a long strip of avoidance mounting groove, the top and bottom of the avoidance mounting groove are provided with screw holes, the screw holes at the bottom corresponding to the avoidance mounting groove extend to the bottom surface of the movable base, the tensioning screw is vertically connected in the screw hole, one end of the movable handle is fixedly connected to the tensioning screw and drives the tensioning screw to rotate, the bottom end of the tensioning screw contacts the base and limits the sliding position of the movable base on the guide rail.

[0021] The resulting technical effect is: the movable base is adjustable on the guide rail to facilitate the clamping of the threaded workpiece to be tested, and the restriction state of the tensioning screw and the base can be achieved by moving the movable handle forward or backward. After the movable base is slid to the required position, the tensioning screw can be controlled by the movable handle to tighten and limit the movable base. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a main schematic diagram of an auxiliary measuring tool for an external threaded workpiece of the present invention;

[0023] Figure 2 This is a schematic diagram of an application of an auxiliary measuring tool for an externally threaded workpiece according to the present invention;

[0024] Figure 3 The figure is a schematic diagram of a locking mechanism of an auxiliary measuring tool for an externally threaded workpiece according to the present invention.

[0025] 1 base, 2 avoidance groove, 3 guide rail, 4 fixed base, 5 first clamping head, 6 movable base, 61 avoidance installation groove, 7 second clamping head, 8 threaded workpiece to be measured, 9 locking mechanism, 91 movable handle, 92 loosening screw, 10 bolt. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0027] See the attached Figures 1 to 3 According to an embodiment of the present invention, an auxiliary measuring tool for an external threaded workpiece includes:

[0028] A base 1, one side of the base 1 is provided with a avoidance groove 2 for installing a thread measuring instrument, a guide rail 3 is horizontally provided on the base 1, one end of the guide rail starts from one end of the base and ends at the edge of the other end;

[0029] A fixed base 4, which is fixedly connected to the top surface of one end of the base 1, a first clamping head 5 is fixed to the top of one side of the fixed base 4, and the fixed base corresponds to the other end position of the guide rail;

[0030] A movable base 6 is slidably connected to the guide rail 3. A second clamping head 7 is installed on the top of the movable base 6 on one side close to the fixed base 4. The first clamping head 5 and the second clamping head 7 are coaxially arranged and cooperate to clamp the threaded workpiece 8 to be tested. A locking mechanism 9 is installed on the movable base 6 to limit the sliding of the movable base on the guide rail.

[0031] In other embodiments, the fixed base 4 is a rectangular base, and the fixed base 4 is connected to one end of the base 1 through a plurality of bolts 10 .

[0032] In other specific embodiments, the base 1 is an L-shaped structural plate, and an L-shaped avoidance groove is provided on one side of the base 1 close to the long side for facilitating the installation of the thread measuring instrument, and the guide rail 3 is provided on the other side of the corresponding long side of the base 1. The base can ensure that after the tooling is placed on the thread measuring instrument platform, the measuring head of the measuring instrument can move forward and backward smoothly to complete the measurement process.

[0033] In some other embodiments, the first clamping plug 5 and the second clamping plug 7 are both conical heads, and both ends of the threaded workpiece 8 to be measured have embedded holes, and the first clamping plug 5 and the second clamping plug 7 are plugged and connected with the embedded holes at the corresponding ends; the coaxiality error of the first clamping plug 5 and the second clamping plug 7 is less than 0.005mm. The linear state of the threaded workpiece to be measured after being clamped to the measuring fixture is ensured, and the measurement accuracy of the thread is further ensured.

[0034] In some other specific embodiments, a sliding block matching the guide rail 3 is provided on the movable base 6, and the sliding block is a convex block to ensure the sliding assembly relationship between the movable base and the base so as not to be separated.

[0035] In other specific embodiments, the locking mechanism 9 includes a movable handle 91 and a tension screw 92. A long strip-shaped avoidance installation groove 61 is horizontally provided on one side wall of the movable base 6. The top and bottom of the avoidance installation groove 61 are provided with screw holes. The screw holes at the bottom of the avoidance installation groove 61 extend to the bottom surface of the movable base 6. The tension screw 92 is vertically connected in the screw hole. One end of the movable handle 91 is fixedly connected to the tension screw 92 and drives the tension screw 92 to rotate. The bottom end of the tension screw 92 contacts the base 1 and limits the sliding position of the movable base 6 on the guide rail 3). In specific implementation, the avoidance installation groove needs to leave space for the movable handle to float up and down to ensure that the movable handle can normally drive the tension screw to loosen or tighten.

[0036] In another embodiment, the movable handle can be connected to the tension screw by a nut. Through the matching relationship between the nut and the tension screw, when the nut is rotated, the tension screw is displaced relative to the nut to complete the limiting of the movable base.

[0037] During the specific measurement: the external threaded workpiece is mounted on the measuring fixture (the threaded workpiece to be measured is fixed with the first clamping head and the second clamping head), and after being tightened, it is placed on the measuring table of the thread measuring instrument, and the thread parameters of the workpiece are directly contact-scanned and measured using the probe of the thread measuring instrument.

[0038] As for the device and the method of use disclosed in the embodiment, since they correspond to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary measuring tool for external threaded parts, characterized in that: include: A base (1), one side of the base (1) is provided with a relief groove (2) for installing a thread measuring instrument, and a guide rail (3) is horizontally provided on the base (1); A fixed base (4), the fixed base (4) being fixedly connected to a top surface of one end of the base (1), and a first clamping head (5) being fixed to a top of one side of the fixed base (4); A movable base (6) is slidably connected to the guide rail (3); a second clamping head (7) is installed on the top of one side of the movable base (6) close to the fixed base (4); the first clamping head (5) and the second clamping head (7) are coaxially arranged and cooperate to clamp the threaded workpiece (8) to be tested; and a locking mechanism (9) is installed on the movable base (6) to limit the sliding of the movable base on the guide rail.

2. The auxiliary measuring tool for external threaded parts according to claim 1, characterized in that: The fixed base (4) is a rectangular base, and the fixed base (4) is connected to one end of the base (1) via a plurality of bolts (10).

3. The auxiliary measuring tool for external threaded parts according to claim 1, characterized in that: The base (1) is an L-shaped structural plate. The side of the base (1) close to the long side is provided with an L-shaped avoidance groove for facilitating the installation of a thread measuring instrument. The guide rail (3) is arranged on the other side of the base (1) corresponding to the long side.

4. The auxiliary measuring tool for external threaded parts according to claim 1, characterized in that: The first clamping head (5) and the second clamping head (7) are both conical heads, and both ends of the threaded workpiece (8) to be tested have embedded holes. The first clamping head (5) and the second clamping head (7) are plug-connected with the embedded holes at the corresponding ends; the coaxiality error between the first clamping head (5) and the second clamping head (7) is less than 0.005 mm.

5. The auxiliary measuring tool for external threaded parts according to claim 1, characterized in that: The movable base (6) is provided with a sliding block that matches the guide rail (3), and the sliding block is a convex block.

6. The auxiliary measuring tool for external threaded parts according to claim 1, characterized in that: The locking mechanism (9) comprises a movable handle (91) and a tensioning screw (92); a long strip-shaped avoidance installation groove (61) is horizontally provided on one side wall of the movable base (6); screw holes are provided at the top and bottom of the avoidance installation groove (61); the screw holes at the bottom corresponding to the avoidance installation groove (61) extend to the bottom surface of the movable base (6); the tensioning screw (92) is vertically connected to the screw hole; one end of the movable handle (91) is fixedly connected to the tensioning screw (92) and drives the tensioning screw (92) to rotate; the bottom end of the tensioning screw (92) contacts the base (1) and limits the sliding position of the movable base (6) on the guide rail (3).

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