Die machining allowance checking device

Abstract

The invention discloses a die machining allowance checking device which comprises a mounting rod used for being connected with a machine tool spindle and a measuring part arranged on the mounting rod, the measuring part comprises a connecting rod connected with the mounting rod and a fixing nut arranged on the connecting rod in a sleeving mode, and a coaxial spring is arranged on the connecting rod. A measuring rod is arranged at the end, away from the connecting rod, of the spring, the spring and the measuring rod are located in the fixing nut, the measuring rod penetrates through the end of the fixing nut and is slidably connected with the fixing nut, scales are arranged on the outer surface of the measuring rod in the length direction, and the initial value of the scales is flush with the end of the fixing nut. Through the arrangement of the mounting rod and the measuring part, the device is mounted on the machine tool spindle and performs programming according to a designed workpiece, when the measuring rod walks to a specified position, the measuring rod contact is in contact with the workpiece, and the machining allowance is determined by observing scales on the measuring rod; the problem that the machining allowance of the arc-shaped peripheral face of an existing blank is not easy to determine is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of mold processing, and in particular relates to a mold processing allowance inspection device. Background Art

[0002] When using CNC for mold processing, the quality and shape of the blank have a great impact on the processing results. Especially for welding, casting and other blanks, due to their uneven surface and internal defects, they are prone to uneven processing and local material shortages, resulting in scrap.

[0003] In addition, these blanks may have working surfaces all around them, which puts higher requirements on the determination of machining allowance. Therefore, an accurate and efficient machining allowance determination tool is needed. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a mold machining allowance inspection device to solve the problem that the machining allowance of the arc-shaped outer peripheral surface of the blank is difficult to determine.

[0005] In order to solve the above problems, the present invention adopts the following technical solutions:

[0006] A mold machining allowance inspection device comprises a mounting rod for connecting to a machine tool spindle and a measuring part arranged on the mounting rod, the measuring part comprises a connecting rod connected to the mounting rod and a fixing nut sleeved on the connecting rod, a coaxial spring is arranged on the connecting rod, a measuring rod is arranged at one end of the spring away from the connecting rod, the spring and the measuring rod are both located in the fixing nut, the measuring rod passes through the end of the fixing nut and is slidably connected to the fixing nut, a scale is arranged on the outer surface of the measuring rod along its length direction, and the initial value of the scale is flush with the end of the fixing nut.

[0007] Furthermore, a connecting hole is provided on the mounting rod, a socket matching the end of the mounting rod is provided on the connecting rod, a through hole penetrating the connecting rod is provided on the outer surface of the connecting rod, and a fixing bolt that can pass through the through hole and the connecting hole is provided on the connecting rod.

[0008] Furthermore, one end of the connecting rod adjacent to the spring is provided with a groove for accommodating the spring, and one end of the measuring rod adjacent to the spring is located in the groove.

[0009] Furthermore, a coaxial limiting ring is arranged at the outer end of the fixing nut, and a coaxial abutting ring is arranged on the measuring rod. The abutting ring is located inside the fixing nut and abuts against the inner side of the limiting ring.

[0010] Furthermore, the outer surface of the connecting rod is provided with threads, and the fixing nut is threadably connected to the connecting rod via the threads.

[0011] Furthermore, a concave platform connected to the insertion hole is provided on the connecting rod, and a positioning step matched with the concave platform is provided on the mounting rod.

[0012] Furthermore, a capacitive proximity sensor is arranged in the groove, the capacitive proximity sensor is coaxial with the spring and is located in the spring, and the detection end of the capacitive proximity sensor faces the end of the measuring rod.

[0013] The significant beneficial effects achieved by the present invention are:

[0014] 1. The present application installs a mounting rod and a measuring part, is installed on the spindle of a machine tool and is programmed according to the designed workpiece. When the measuring rod moves to a specified position, the measuring rod contact contacts the workpiece, and the machining allowance is determined by observing the scale on the measuring rod, thereby effectively solving the current problem that the machining allowance of the arc-shaped outer peripheral surface of the blank is difficult to determine.

[0015] 2. The setting of the groove can regulate the movement of the spring and the measuring rod to avoid the spring from tilting during compression or the measuring rod from tilting during movement, which may lead to inaccurate readings.

[0016] 3. The setting of the upper limit ring on the fixed nut and the abutment ring on the measuring rod can prevent the measuring rod from slipping out of the outer end of the fixed nut, and also facilitates the installation of the spring and the measuring rod.

[0017] 4. The threaded connection between the fixing nut and the connecting rod has the advantages of easy installation and simple structure.

[0018] 5. The arrangement of the concave platform on the connecting rod and the positioning step on the mounting rod can make the contact parts of the connecting rod and the mounting rod in a planar contact, thereby increasing the firmness of the two.

[0019] 6. The setting of the capacitive proximity sensor can be displayed on the screen in the form of a digital signal, and the displacement change caused by the measuring rod is more intuitive and convenient for staff to observe and record. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of embodiments 1 and 2 of the present invention;

[0021] Attached Figure 2 It is a schematic diagram of the explosion structure of Examples 1 and 2 of the present invention;

[0022] Attached Figure 3 Schematic diagram of the cross-sectional structure of the measuring part in Embodiments 1 and 2 of the present invention;

[0023] Attached Figure 4 It is a schematic diagram of the cross-sectional structure of the measuring part in Example 3 of the present invention.

[0024] In the attached drawings, 1. mounting rod; 2. connecting rod; 3. fixing nut; 4. spring; 5. measuring rod; 6. scale; 7. connecting hole; 8. plug hole; 9. through hole; 11. groove; 12. limit ring; 13. abutment ring; 14. recess; 15. positioning step; 16. capacitive proximity sensor. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] Example 1

[0027] like Figure 1-Figure 3 As shown, a mold machining allowance inspection device includes a mounting rod 1 for connecting to a machine tool spindle and a measuring part installed on the mounting rod 1, the measuring part includes a connecting rod 2 connected to the mounting rod 1 and a fixing nut 3 sleeved on the connecting rod 2, a coaxial spring 4 is installed on the connecting rod 2, a measuring rod 5 is installed at one end of the spring 4 away from the connecting rod 2, the spring 4 and the measuring rod 5 are coaxial and are both located in the fixing nut 3, the measuring rod 5 passes through the end of the fixing nut 3 and is slidably connected to the fixing nut 3, and a scale 6 is provided on the outer surface of the measuring rod 5 along its length direction, and the initial value of the scale 6 is flush with the end of the fixing nut 3.

[0028] Among them, a connecting hole 7 penetrating the mounting rod 1 is provided on the side of the mounting rod 1, and a plug hole 8 for inserting the end of the mounting rod 1 is provided on the connecting rod 2. The axes of the connecting rod 2 and the mounting rod 1 are perpendicular. A through hole 9 penetrating the connecting rod 2 is provided on the outer surface of the connecting rod 2. The through hole 9 is connected to the plug hole 8. A fixing bolt that can pass through the through hole 9 and the connecting hole 7 is installed on the connecting rod 2; after the end of the mounting rod 1 is inserted into the plug hole 8, the connecting rod 2 can be fixed to the mounting rod 1 by passing the fixing bolt through the through hole 9 and the connecting hole 7; (because the through hole 9 is to be shown in the figure, the fixing bolt is not shown in the figure. The fixing bolt is a combination of a bolt and a nut in this embodiment)

[0029] The end of the connecting rod 2 adjacent to the spring 4 is provided with a groove 11 for accommodating the spring 4, and the end of the measuring rod 5 adjacent to the spring 4 is located in the groove 11; the opening of the groove 11 can prevent the spring 4 from tilting when it is compressed and deformed; the setting of the groove 11 can also guide the movement of the measuring rod 5;

[0030] In order to facilitate the installation of the spring 4 and the measuring rod 5, the connecting rod 2, the spring 4 and the measuring rod 5 are not fixedly connected. However, in order to facilitate the installation, in order to prevent the spring 4 and the measuring rod 5 from slipping out of the outer end of the fixing nut 3, a coaxial limiting ring 12 is installed on the outer end of the fixing nut 3, and a coaxial abutting ring 13 is installed on the measuring rod 5. The abutting ring 13 is located in the fixing nut 3 and abuts against the inner side of the limiting ring 12; the spring 4 and the measuring rod 5 can be limited in the fixing nut 3 by the setting of the limiting ring 12 and the abutting ring 13;

[0031] In this embodiment, the outer surface of the connecting rod 2 is provided with threads, and the fixing nut 3 is threadedly connected to the connecting rod 2 via the threads.

[0032] The working principle is that when in use, first install the mounting rod 1 on the spindle, and then program according to the theoretical position. When the measuring rod 5 reaches the specified position, the contact of the measuring rod 5 contacts the workpiece. At this time, the scale 6 on the measuring rod 5 can be observed to determine the machining allowance. If the machining allowance does not meet the requirements, the workpiece position can be adjusted and re-measured.

[0033] In combination with the above, the present application installs the rod 1 and the measuring part, is installed on the spindle of the machine tool and is programmed according to the designed workpiece. When the measuring rod 5 moves to the specified position, the contact of the measuring rod 5 contacts the workpiece, and the machining allowance is determined by observing the scale 6 on the measuring rod 5, which effectively solves the current problem that the machining allowance of the arc-shaped outer peripheral surface of the blank is difficult to determine.

[0034] Example 2

[0035] like Figure 1-Figure 3 As shown, the structure of this embodiment is roughly the same as that of embodiment 1. This embodiment is further optimized on the basis of embodiment 1. In order to connect the mounting rod 1 and the connecting rod 2 tightly, in this embodiment, a recess 14 connected to the socket 8 is provided on the connecting rod 2, and a positioning step 15 matched with the recess 14 is installed on the mounting rod 1. Through the arrangement of the recess 14 and the positioning step 15, the combined positions of the mounting rod 1 and the connecting rod 2 can be contacted in a planar manner, and the positions of the two are relatively fixed.

[0036] Example 3

[0037] like Figure 4 As shown, the structure of this embodiment is roughly the same as that of embodiment 2. This embodiment is further optimized on the basis of embodiment 2. In this embodiment, in order to more accurately determine the machining allowance, a capacitive proximity sensor 16 is installed in the groove 11. The capacitive proximity sensor 16 is coaxial with the spring 4 and is located in the spring 4. The detection end of the capacitive proximity sensor 16 faces the end of the measuring rod 5. The position of the measuring rod 5 is monitored in real time by the capacitive proximity sensor 16, and the staff can obtain the machining allowance of the measured position of the workpiece by comparing it with the theoretical position.

[0038] It should be noted that an opening is provided on the connecting rod for connecting the cable to the capacitive proximity sensor.

Claims

1. A mold machining allowance inspection device, characterized in that: The invention comprises a mounting rod (1) for connecting to a main shaft of a machine tool and a measuring part arranged on the mounting rod (1), wherein the measuring part comprises a connecting rod (2) connected to the mounting rod (1) and a fixing nut (3) sleeved on the connecting rod (2), a coaxial spring (4) is arranged on the connecting rod (2), a measuring rod (5) is arranged at one end of the spring (4) away from the connecting rod (2), the spring (4) and the measuring rod (5) are both located in the fixing nut (3), the measuring rod (5) passes through the end of the fixing nut (3) and is slidably connected to the fixing nut (3), and a scale (6) is arranged on the outer surface of the measuring rod (5) along its length direction, and the initial value of the scale (6) is flush with the end of the fixing nut (3).

2. A mold machining allowance inspection device according to claim 1, characterized in that: The mounting rod (1) is provided with a connecting hole (7), the connecting rod (2) is provided with a socket (8) adapted to the end of the mounting rod (1), the outer surface of the connecting rod (2) is provided with a through hole (9) penetrating the connecting rod (2), and the connecting rod (2) is provided with a fixing bolt that can pass through the through hole (9) and the connecting hole (7).

3. A mold machining allowance inspection device according to claim 2, characterized in that: One end of the connecting rod (2) adjacent to the spring (4) is provided with a groove (11) for accommodating the spring (4), and one end of the measuring rod (5) adjacent to the spring (4) is located in the groove (11).

4. A mold machining allowance inspection device according to claim 3, characterized in that: A coaxial limiting ring (12) is provided at the outer end of the fixing nut (3), and a coaxial abutting ring (13) is provided on the measuring rod (5). The abutting ring (13) is located inside the fixing nut (3) and abuts against the inner side of the limiting ring (12).

5. A mold machining allowance inspection device according to claim 4, characterized in that: The outer surface of the connecting rod (2) is provided with threads, and the fixing nut (3) is threadedly connected to the connecting rod (2) via the threads.

6. A mold machining allowance inspection device according to claim 5, characterized in that: The connecting rod (2) is provided with a recessed platform (14) connected to the insertion hole (8), and the mounting rod (1) is provided with a positioning step (15) matched with the recessed platform (14).

7. A mold machining allowance inspection device according to claim 6, characterized in that: A capacitive proximity sensor (16) is arranged in the groove (11); the capacitive proximity sensor (16) is coaxial with the spring (4) and is located in the spring (4); and the detection end of the capacitive proximity sensor (16) faces the end of the measuring rod (5).

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