A processing machine tool for grinding the inclined plane of a caliper

Abstract

The present invention discloses a processing machine tool for grinding the inclined surface of a caliper, which includes a base. A bracket is installed at the top of the middle part of the base. The placing seat is vertically and elastically slidably installed in the cavity at the top of the base through a first elastic telescopic rod. Limiting rods are fixed at the front and rear positions on both sides and the front and rear positions on the left end of the middle part of the placing seat. A support mechanism for fixing the position of the positioning rod is arranged in the adjusting rod; the push plate is fixed at the inner ends of the positioning rods on the front and rear sides at the left end of the placing seat. The mounting seat is horizontally and limit slidably on the base at the corresponding cavity through a slide rod fixed at the bottom. Both the screw rod and the grinding head are driven by motors. One end of the positioning rod at the rear side of the left end of the placing seat is connected with an inner positioning column through a rod member. This processing machine tool for grinding the inclined surface of a caliper can perform one-time positioning on calipers of different specifications, and at the same time automatically position and grind the inclined surface of the caliper, improving the operation convenience and processing accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of caliper processing, and specifically relates to a processing machine tool for grinding the inclined surface of a caliper. Background Technique

[0002] The caliper is one of the most commonly used measuring instruments in the mechanical industry. To ensure the measurement accuracy, it is usually necessary to grind the inclined surface of the caliper, including the outer measuring surface and the inner measuring surface of the caliper. When grinding the caliper, in order to improve the efficiency, in the prior art, most of them use a caliper processing machine tool for grinding. However, the existing caliper processing machine tools have the following problems when in use:

[0003] Most calipers are made of metal materials. When grinding, the friction force is relatively large. To ensure the accuracy, it is usually necessary to clamp it, and at the same time, it is necessary to keep the positioning of the caliper. The existing caliper processing machine tools are not convenient for conveniently clamping and positioning calipers of different specifications. Most of them use multiple driving parts for multi-surface clamping. On the one hand, the cooperation requirements between the driving parts are relatively high. On the other hand, when installing calipers of different specifications, it is necessary to adjust the stroke of the driving parts, and at the same time, the grinding stroke after positioning also needs to be adjusted adaptively. To ensure the accuracy, the operation is cumbersome and the cost is relatively high. When positioning the caliper, it is necessary to manually or automatically position and adjust the initial position, which requires a relatively high level of the staff and increases the labor training cost.

[0004] In view of the above problems, it is urgent to innovate and design on the basis of the original caliper processing machine tool. Summary of the Invention

[0005] The purpose of the present invention is to provide a processing machine tool for grinding the inclined surface of a caliper, so as to solve the problem that the existing caliper processing machine tool in the above background technology is not convenient for conveniently clamping and positioning calipers of different specifications. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem that the prior art solution is too single.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A processing machine tool for grinding the inclined surface of a caliper, including a base, a bracket is installed on the top of the middle of the base, a hydraulic cylinder is fixed on the bracket, and the output end of the hydraulic cylinder is connected with a pressure head, and the pressure head is located between the base and the bracket;

[0007] It further includes a placement seat which is vertically elastically slidably installed in the top cavity of the base through a first elastic telescopic rod, and the placement seat is located below the pressing head. Limit rods are fixed at the front and rear sides of the middle part of the placement seat and the front and rear sides of the left end. A positioning rod is slidably sleeved on the protruding side of the limit rod. The two sides of the positioning rod are connected to the limit rod through a second elastic telescopic rod. Clamping strips are fixed at the inner ends of the two positioning rods in the middle position. A regulating rod is connected to the outer end cavity of the positioning rod through a first spring, and the outer end of the regulating rod is located in an adjustment groove. The adjustment groove is opened on the inner side of the vertical plate, and the vertical plate is fixed at the corresponding position on the top of the base. A support mechanism for fixing the position of the positioning rod is arranged in the regulating rod;

[0008] A push plate is fixed at the inner ends of the positioning rods on the front and rear sides of the left end of the placement seat. A connecting rod is vertically and slidably installed in an embedded manner on the end face of the push plate. One end of the connecting rod is fixed with a mounting seat. The mounting seat is horizontally and limit slidably installed on the corresponding cavity of the base through a sliding rod fixed at the bottom. A screw rod is embedded and installed in the top cavity of the mounting seat. A grinding seat is threadedly sleeved on the screw rod. The output end of the grinding seat is connected with a grinding head. Both the screw rod and the grinding head are driven by a motor. One end of the positioning rod at the rear side of the left end of the placement seat is connected with an inner positioning column through a rod, and one end of the positioning rod at the front side of the left end of the placement seat is connected with an outer positioning column through a rod.

[0009] Preferably, the positioning rod elastically slides horizontally on the limit rod through the second elastic telescopic rod, and the positioning rods in the middle position and the left end position are perpendicular to each other.

[0010] Preferably, the regulating rod elastically fits and slides in the end cavity of the positioning rod through the first spring, and the elastic force of the first spring is greater than that of the second elastic telescopic rod.

[0011] Preferably, the support mechanism in the regulating rod includes a second spring, a locking rod, a locking groove, a third spring, a release rod, a release groove and a pull rope. The locking rod is connected to the side cavity of the regulating rod through the second spring. One end of the locking rod is located in the locking groove, and the locking groove is opened on the inner side wall of the end cavity of the positioning rod. The end of the regulating rod is elastically slidably connected with the release rod through the third spring. A pull rope is connected between the release rod and the locking rod. One end of the release rod is located in the release groove, and the release groove is opened on the inner wall of the adjustment groove.

[0012] Preferably, the end of the locking rod is designed as a right trapezoidal structure, and the end of the locking rod is in concave-convex fit with the locking groove. The locking grooves are equally spaced in the end cavity of the positioning rod, and the inclined surface of the end of the locking rod faces the direction of the clamping strip. There are two locking rods oppositely distributed in the regulating rod, and the two locking rods are staggeredly distributed.

[0013] Preferably, the release rod elastically slides within the adjustment rod through a third spring, and the elastic force of the third spring is greater than that of the second spring. The end of the release rod is beveled and is in parallel contact with the inner wall of the release groove.

[0014] Preferably, the end of the adjustment rod is beveled and is in parallel contact with the inner wall of the adjustment groove, and the bevel angle of the adjustment groove is smaller than that of the release groove.

[0015] Preferably, balls are embedded on both sides of the sliding rod, and the sliding rod is limited to slide within the top cavity of the base through the balls.

[0016] Preferably, the inner positioning post and the outer positioning post slide relative to each other. The inner positioning post is located outside the inner measuring surface of the caliper, and the outer positioning post is located inside the outer measuring surface of the caliper. Moreover, the inner positioning post and the outer positioning post correspond to the position of the grinding head.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, a flexible clamping function is provided. The caliper is placed on the placement seat, and the hydraulic cylinder drives the pressing head to move downward, pressing the caliper and driving the placement seat to move downward. As a result, the positioning rod drives the adjustment rod to move downward. The sliding of the adjustment rod within the adjustment groove, in cooperation with the bevel of the adjustment groove, enables the adjustment rod to first drive the positioning rod to move towards the caliper. The clamping strips on the positioning rod at the middle front and rear positions clamp the caliper in the center. At the same time, as the placement seat continues to move downward to the final position, the adjustment rod can only move within the positioning rod. In cooperation with the release rod relaxing the pull rope, the elastically sliding locking rod can enter the corresponding locking groove. To prevent the caliper from loosening during grinding and affecting the accuracy, two staggered locking rods are provided. When a single locking rod is inserted into the locking groove, in cooperation with the rubber pads provided on the side of the clamping strip, the gap between adjacent two locking grooves can be compensated, improving the clamping force. The clamping of the caliper can be completed only by the downward movement of the hydraulic cylinder. On the one hand, it can be applicable to calipers of different sizes. On the other hand, there is no need to use multiple driving devices to clamp the caliper in multiple directions, and the problem of adjusting the travel distance of the driving device for different specifications is solved. The placement of the caliper does not require precise setting in advance, the requirements for the staff are not high, and there is no need to waste time on training;

[0019] 2. The present invention provides a positioning and grinding mechanism. Similarly, as the hydraulic cylinder drives the placement seat to move downward, the positioning rod located at the front and rear positions of the base end can drive the inner positioning column and the outer positioning column to move relative to each other, and as the placement seat continues to move downward to the final position, the inner positioning column and the outer positioning column can always contact the caliper end, so that the outer measuring surface and the inner measuring surface of the caliper can be positioned and clamped. Furthermore, when the positioning rod drives the inner positioning column and the outer positioning column to move, it can also drive the mounting seat to move synchronously, so that the grinding head and the positions of the inner positioning column and the outer positioning column always correspond to each other. While positioning the caliper end, the grinding position can be positioned, without first positioning the position of the caliper and then moving the caliper to the grinding area. The power of the hydraulic cylinder can be used as a whole to realize the positioning of the caliper grinding surface, which is convenient for subsequent double-sided synchronous grinding of the caliper and further improves the accuracy. At the same time, components such as a locking rod and a release rod are arranged in the adjusting rod, so that calipers of different specifications can be clamped and positioned, and continuous batch grinding operations can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a top-view cross-sectional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the side section structure of the present invention;

[0022] Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0024] Figure 5 It is a schematic diagram of the side section structure of the mounting seat of the present invention.

[0025] In the figure: 1. base; 2. bracket; 3. hydraulic cylinder; 4. pressure head; 5. placement seat; 6. first elastic telescopic rod; 7. limit rod; 8. positioning rod; 9. second elastic telescopic rod; 10. clamping strip; 11. first spring; 12. adjustment rod; 121. second spring; 122. locking rod; 123. locking groove; 124. third spring; 125. release rod; 126. release groove; 127. pull rope; 13. adjustment groove; 14. vertical plate; 15. push plate; 16. connecting rod; 17. mounting seat; 18. sliding rod; 19. screw; 20. grinding seat; 21. grinding head; 22. inner positioning column; 23. outer positioning column. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-5 , the present invention provides a technical solution: a processing machine tool for grinding the inclined surface of a caliper, including a base 1, a bracket 2, a hydraulic cylinder 3, a pressing head 4, a placing seat 5, a first elastic telescopic rod 6, a limiting rod 7, a positioning rod 8, a second elastic telescopic rod 9, a clamping strip 10, a first spring 11, an adjusting rod 12, a second spring 121, a locking rod 122, a locking groove 123, a third spring 124, a release rod 125, a release groove 126, a pulling rope 127, an adjusting groove 13, a vertical plate 14, a pushing plate 15, a connecting rod 16, a mounting seat 17, a sliding rod 18, a screw rod 19, a grinding seat 20, a grinding head 21, an inner positioning column 22 and an outer positioning column 23.

[0028] Embodiment 1

[0029] Please refer to Figures 1-4, including a base 1, a bracket 2 is installed at the top of the middle of the base 1, a hydraulic cylinder 3 is fixed on the bracket 2, the output end of the hydraulic cylinder 3 is connected with a pressure head 4, and the pressure head 4 is located between the base 1 and the bracket 2; it also includes a placing seat 5, the placing seat 5 is vertically elastically slidably installed in the top cavity of the base 1 through a first elastic telescopic rod 6, and the placing seat 5 is located below the pressure head 4. Limit rods 7 are fixed at the front and rear sides and the left front and rear sides of the middle part of the placing seat 5. A positioning rod 8 is slidably sleeved on the protruding side of the limit rod 7. The two sides of the positioning rod 8 are connected with the limit rod 7 through a second elastic telescopic rod 9. Clamping strips 10 are fixed at the inner ends of the two positioning rods 8 in the middle position. A first spring 11 is connected to an adjusting rod 12 in the outer cavity of the positioning rod 8, and the outer end of the adjusting rod 12 is located in an adjusting groove 13, and the adjusting groove 13 is opened on the inner side of a vertical plate 14, and the vertical plate 14 is fixed at the corresponding position on the top of the base 1. A supporting mechanism for fixing the position of the positioning rod 8 is arranged in the adjusting rod 12; the positioning rod 8 elastically slides horizontally on the limit rod 7 through the second elastic telescopic rod 9, and the positioning rod 8 in the middle position and the positioning rod 8 in the left end position are perpendicular to each other; the adjusting rod 12 elastically fits and slides in the end cavity of the positioning rod 8 through the first spring 11, and the elastic force of the first spring 11 is greater than the elastic force of the second elastic telescopic rod 9; the supporting mechanism in the adjusting rod 12 includes a second spring 121, a locking rod 122, a locking groove 123, a third spring 124, a release rod 125, a release groove 126 and a pull rope 127. A locking rod 122 is connected to the side cavity of the adjusting rod 12 through a second spring 121, and one end of the locking rod 122 is located in the locking groove 123, and the locking groove 123 is opened on the inner side wall of the end cavity of the positioning rod 8. The end of the adjusting rod 12 is elastically slidably connected with a release rod 125 through a third spring 124, and a pull rope 127 is connected between the release rod 125 and the locking rod 122. One end of the release rod 125 is located in the release groove 126, and the release groove 126 is opened on the inner wall of the adjusting groove 13; the end of the locking rod 122 is designed as a right trapezoid structure, and the end of the locking rod 122 is in concave-convex fit with the locking groove 123, and the locking grooves 123 are equally spaced in the end cavity of the positioning rod 8, and the inclined surface at the end of the locking rod 122 is in the direction of the clamping strip 10. There are two locking rods 122 oppositely distributed in the adjusting rod 12, and the two locking rods 122 are staggered; the release rod 125 elastically slides in the adjusting rod 12 through the third spring 124, and the elastic force of the third spring 124 is greater than the elastic force of the second spring 121. The end of the release rod 125 is in an inclined surface parallel to the inner wall of the release groove 126; the end of the adjusting rod 12 is in an inclined surface structure parallel to the inner wall of the adjusting groove 13, and the inclined surface angle of the adjusting groove 13 is smaller than the inclined surface angle of the release groove 126; place the caliper on the placing seat 5, the hydraulic cylinder 3 drives the pressure head 4 to press down on the caliper and the placing seat 5, and the two positioning rods 8 and the clamping strips 10 in the middle front and back clamp the two sides of the caliper;

[0030] Embodiment 2

[0031] Please refer to Figures 1-5 , the push plate 15 is fixed at the inner ends of the positioning rods 8 on the front and rear sides of the left end of the placement seat 5. And a connecting rod 16 is vertically and slidably installed in an embedded manner on the end face of the push plate 15. One end of the connecting rod 16 is fixed with a mounting seat 17. The mounting seat 17 is horizontally and limit-slid on the corresponding cavity on the base 1 through the slide rod 18 fixed at the bottom. And a screw rod 19 is embedded and installed in the top cavity of the mounting seat 17. And a grinding seat 20 is sleeved on the screw rod 19 in a threaded manner. Moreover, the output end of the grinding seat 20 is connected with a grinding head 21. Both the screw rod 19 and the grinding head 21 are driven by motors. One end of the positioning rod 8 at the rear side of the left end of the placement seat 5 is connected with an inner positioning column 22 through a rod. And one end of the positioning rod 8 at the front side of the left end of the placement seat 5 is connected with an outer positioning column 23 through a rod; Ball bearings are embedded on both sides of the slide rod 18. And the slide rod 18 is limit-slid in the top cavity of the base 1 through the ball bearings; The inner positioning column 22 and the outer positioning column 23 slide relative to each other. And the inner positioning column 22 is located outside the inner measuring surface of the caliper. And the outer positioning column 23 is located inside the outer measuring surface of the caliper. Moreover, the positions of the inner positioning column 22 and the outer positioning column 23 correspond to the position of the grinding head 21; As the hydraulic cylinder 3 drives the pressing head 4 to press down on the caliper and the placement seat 5, the inner positioning column 22 and the outer positioning column 23 move relatively, clamp and position the end of the caliper, and keep the corresponding adjustment of the position of the grinding head 21, improving the grinding accuracy.

[0032] Working principle: When using this machining tool for bevel grinding of calipers, such as Figures 1-5, first place the caliper on the placement seat 5, then start the hydraulic cylinder 3 on the support 2. The hydraulic cylinder 3 drives the pressure head 4 to move downward and contact the caliper, causing the placement seat 5 to move downward under force and compress the first elastic telescopic rod 6. As the placement seat 5 moves downward, at the front and rear positions in the middle of the whole, the positioning rod 8 is driven to move downward by the limiting rod 7, and the positioning rod 8 drives the adjusting rod 12 to move downward, so that the end of the adjusting rod 12 moves downward at the adjusting groove 13 in the vertical plate 14. Through the inclined surface of the adjusting groove 13, the adjusting rod 12 can move toward the caliper direction during the downward movement. Since the elastic force of the first spring 11 is greater than the elastic force of the second elastic telescopic rod 9, at this time, the movement of the adjusting rod 12 will first drive the positioning rod 8 to move on the limiting rod 7, causing the second elastic telescopic rod 9 to be compressed under force. The two positioning rods 8 at the front and rear positions drive the clamping strip 10 to move toward the caliper direction to perform centering and clamping on the caliper. As the placement seat 5 continues to move downward, the clamping strip 10 at the end of the positioning rod 8 touches the caliper, making the positioning rod 8 unable to move anymore. At this time, when the adjusting rod 12 continues to move downward in the adjusting groove 13, the adjusting rod 12 can move in the cavity at the end of the positioning rod 8. At the same time, the release rod 125 in the adjusting rod 12 moves downward in the release groove 126. The inclination of the release groove 126 is relatively large, causing the release rod 125 to move further, thereby making the pull rope 127 loose. At this time, as the adjusting rod 12 moves in the positioning rod 8, the inclined surface of the locking rod 122 is compressed under force, and under the elastic force of the third spring 124, the locking rod 122 will pop out and snap into the corresponding locking groove 123, and through the right-angle side of the locking rod 122, the position of the adjusting rod 12 is restricted to prevent the adjusting rod 12 from moving in the reverse direction, thereby maintaining the clamping effect of the clamping strip 10 on the caliper. Further, the two locking rods 122 are arranged staggeredly, which can cooperate with the rubber pads conventionally arranged on the side of the clamping strip 10 to improve the clamping effect on the caliper and avoid the appearance of a relatively long locking space when a single locking rod 122 is located between two adjacent locking grooves 123, completing the positioning and clamping operation on the side and top of the caliper;

[0033] Similarly, the positioning rod 8 located at the front and rear positions of the left end of the base 1 can drive the relative movement of the inner positioning column 22 and the outer positioning column 23. Furthermore, the outer measuring surface and the inner measuring surface of the caliper can be relatively positioned through the inner positioning column 22 and the outer positioning column 23. When the positioning rod 8 at the front and rear positions of the left end of the base 1 moves and drives the relative movement of the inner positioning column 22 and the outer positioning column 23, it can drive the connecting rod 16 to move through the push plate 15. The vertical sliding of the connecting rod 16 on the push plate 15 will not affect the downward movement of the positioning rod 8. The connecting rod 16 drives the mounting seat 17 to move. The mounting seat 17 is limited and slides on the base 1 through the sliding rod 18 to adjust the positions of the grinding seat 20 and the grinding head 21 on the mounting seat 17, so that the grinding seat 20 and the grinding head 21 move synchronously with the inner positioning column 22 and the outer positioning column 23. While positioning and clamping the measuring end of the caliper, the grinding position can be positioned to improve the grinding accuracy. Then, the motor drives the screw 19 and the grinding head 21 to rotate, and further drives the grinding seat 20 to move. The inner and outer measuring surfaces of the caliper are ground by the rotating grinding head 21. When the grinding is completed, the grinding seat 20 resets, and the hydraulic cylinder 3 drives the pressing head 4 to reset. At this time, under the elastic force of the first elastic telescopic rod 6, the placing seat 5 resets. At this time, the release rod 125 moves upward in the release groove 126. Under the action of the third spring 124, the release rod 125 gradually resets, making the pull rope 127 straighten, pulling the locking rod 122 out of the locking groove 123. At this time, the adjusting rod 12 is no longer restricted. Under the action of the first spring 11, the adjusting rod 12 resets at the end of the positioning rod 8. Then, under the action of the second elastic telescopic rod 9, the positioning rod 8 resets on the limiting rod 7, making the clamping strip 10 leave the caliper. At the same time, the inner positioning column 22 and the outer positioning column 23 reset, releasing the clamping of the caliper, which is convenient for the removal of the caliper and the positioning, installation and grinding of the next caliper. Further, a ball is embedded at the bottom of the pressing head 4 to facilitate the caliper to have a moving space when the caliper is clamped.

[0034] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A processing machine tool for grinding the inclined plane of a caliper, comprising a base (1). At the top of the middle part of the base (1), a bracket (2) is installed. A hydraulic cylinder (3) is fixed on the bracket (2), and the output end of the hydraulic cylinder (3) is connected with a pressure head (4), and the pressure head (4) is located between the base (1) and the bracket (2); Characterized in that: It further includes a placing seat (5). The placing seat (5) is vertically elastically slidably installed in the top cavity of the base (1) through a first elastic telescopic rod (6), and the placing seat (5) is located below the pressure head (4). At the front and rear sides of the middle part of the placing seat (5) and at the front and rear sides of the left end, limiting rods (7) are fixed. A positioning rod (8) is slidably sleeved on the protruding side of the limiting rod (7). The two sides of the positioning rod (8) are connected with the limiting rod (7) through a second elastic telescopic rod (9). The inner ends of the two positioning rods (8) at the middle position are both fixed with clamping strips (10). In the outer end cavity of the positioning rod (8), an adjusting rod (12) is connected through a first spring (11), and the outer end of the adjusting rod (12) is located in an adjusting groove (13). The adjusting groove (13) is opened on the inner side of a vertical plate (14), and the vertical plate (14) is fixed at the corresponding position on the top of the base (1). A support mechanism for fixing the position of the positioning rod (8) is arranged in the adjusting rod (12); A push plate (15). The push plate (15) is fixed at the inner ends of the positioning rods (8) at the front and rear sides of the left end of the placing seat (5). A connecting rod (16) is vertically slidably embedded on the end face of the push plate (15). One end of the connecting rod (16) is fixed with a mounting seat (17). The mounting seat (17) is horizontally and limit slidably on the corresponding cavity of the base (1) through a sliding rod (18) fixed at the bottom. A screw rod (19) is embedded in the top cavity of the mounting seat (17). A grinding seat (20) is threadedly sleeved on the screw rod (19). The output end of the grinding seat (20) is connected with a grinding head (21). Both the screw rod (19) and the grinding head (21) are driven by a motor. One end of the positioning rod (8) at the rear side of the left end of the placing seat (5) is connected with an inner positioning column (22) through a rod, and one end of the positioning rod (8) at the front side of the left end of the placing seat (5) is connected with an outer positioning column (23) through a rod.

2. The processing machine tool for grinding the inclined plane of a caliper according to claim 1, Characterized in that: The positioning rod (8) elastically slides horizontally on the limiting rod (7) through the second elastic telescopic rod (9), and the positioning rod (8) at the middle position and the positioning rod (8) at the left end are perpendicular to each other.

3. The processing machine tool for grinding the inclined plane of a caliper according to claim 1, Characterized in that: The adjusting rod (12) elastically fits and slides in the end cavity of the positioning rod (8) through the first spring (11), and the elastic force of the first spring (11) is greater than the elastic force of the second elastic telescopic rod (9).

4. The processing machine tool for grinding the inclined plane of a caliper according to claim 1, Characterized in that: The support mechanism in the adjusting rod (12) includes a second spring (121), a locking rod (122), a locking groove (123), a third spring (124), a release rod (125), a release groove (126) and a pulling rope (127). In the side cavity of the adjusting rod (12), the locking rod (122) is connected by the second spring (121). One end of the locking rod (122) is located in the locking groove (123), and the locking groove (123) is opened on the inner side wall of the end cavity of the positioning rod (8). The end of the adjusting rod (12) is elastically slidably connected with the release rod (125) through the third spring (124), and a pulling rope (127) is connected between the release rod (125) and the locking rod (122). One end of the release rod (125) is located in the release groove (126), and the release groove (126) is opened on the inner wall of the adjusting groove (13).

5. A machining tool for bevel grinding of a caliper according to claim 4, wherein: The end of the locking rod (122) is designed as a right trapezoid structure, and the end of the locking rod (122) is in concave-convex fit with the locking groove (123). The locking grooves (123) are equally spaced in the end cavity of the positioning rod (8). The inclined surface of the end of the locking rod (122) faces the direction of the clamping strip (10). There are two locking rods (122) oppositely distributed in the adjusting rod (12), and the two locking rods (122) are staggeredly distributed.

6. A machining tool for bevel grinding of a caliper according to claim 4, wherein: The release rod (125) elastically slides in the adjusting rod (12) through the third spring (124), and the elastic force of the third spring (124) is greater than the elastic force of the second spring (121). The end of the release rod (125) is inclined and is parallel and in contact with the inner wall of the release groove (126).

7. A machining tool for bevel grinding of a caliper according to claim 1, wherein: The end of the adjusting rod (12) is inclined and is parallel and in contact with the inner wall of the adjusting groove (13), and the inclined angle of the adjusting groove (13) is smaller than the inclined angle of the release groove (126).

8. A machining tool for bevel grinding of a caliper according to claim 1, wherein: Both sides of the sliding rod (18) are embedded with balls, and the sliding rod (18) is limited and slides in the top cavity of the base (1) through the balls.

9. A machining tool for bevel grinding of a caliper according to claim 1, wherein: The inner positioning column (22) and the outer positioning column (23) slide relative to each other. The inner positioning column (22) is located outside the inner measuring surface of the caliper, and the outer positioning column (23) is located inside the outer measuring surface of the caliper. The inner positioning column (22) and the outer positioning column (23) correspond to the position of the grinding head (21).

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